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Having both time and frequency assignment

Subclass of:

370 - Multiplex communications

370310000 - COMMUNICATION OVER FREE SPACE

370328000 - Having a plurality of contiguous regions served by respective fixed stations

370329000 - Channel assignment

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DocumentTitleDate
20130044729METHOD FOR SIGNAL TRANSMISSION IN WIRELESS SYSTEMS - A method is provided for forming a signal in a wireless communication system in which a plurality of terminals commonly use time and frequency resources for efficient code hopping. The method includes allocating the same frequency-axis sequence and different time-axis sequences to a plurality of terminals by using a resource index according to a first slot in the first slot; and allocating different frequency-axis sequences and different time-axis sequences to the plurality of terminals by using a resource index according to a second slot in the second slot.02-21-2013
20130044728METHOD AND DEVICE FOR GENERATING AND MAPPING CHANNEL STATE INFORMATION REFERENCE SIGNAL SEQUENCE - The present invention provides a method and device for generating and mapping a Channel State Information Reference Signal (CSI-RS) sequence, and the method includes: generating a pseudo-random sequence according to a pseudo-random sequence initial value, performing a Quadrature Phase-Shift Keying (QPSK) modulation on the pseudo-random sequence, and obtaining a first CSI-RS sequence according to maximum bandwidth of system; and cutting the first CSI-RS sequence according to the actual bandwidth of the system, obtaining a second CSI-RS sequence, and mapping the second CSI-RS sequence to a time frequency location of a CSI-RS antenna port. The CSI-RS reference signal sequence can be generated or obtained respectively at the UE terminal and eNB terminal in accordance with the stated methods for generating and mapping the reference sequence according to known parameters by the present invention, so that the calculated CSI-RS sequence can be utilized to measure the channel at the UE terminal.02-21-2013
20130044727METHOD AND APPARATUS FOR CONTROL CHANNEL TRANSMISSION AND RECEPTION - A user equipment (UE) receives a signal comprising multiple resource blocks and configured for receiving a subframe comprising multiple time-frequency resources, the time-frequency resources comprising at least two control channel candidates. The UE determines a first control channel candidate of the at least two control channel candidates in the subframe, determines a first antenna port (AP) associated with the first control channel candidate, decodes the first control channel candidate based on the first AP, determines a second control channel candidate of the at least two control channel candidates in the subframe, determines a second AP associated with the second control channel candidate, and decodes the second control channel candidate based on the second AP, wherein the AP used for decoding the first control channel candidate is distinct from the AP used for decoding the second control channel candidate.02-21-2013
20130028233Allocating Resources in a Frequency-Time Space to Mobile Station Data - To allocate resources in an orthogonal frequency domain multiple access (OFDMA) system, two-dimensional rectangular regions are assigned in a frequency-time space to data bursts associated with mobile stations. At least one data burst does not fit in an available space in the frequency-time space is determined. In response to the determining, the assigned two-dimensional rectangular regions are reshaped.01-31-2013
20120170545BASE STATION APPARATUS - Basic units (resource blocks) of resource allocation that can be used in a communication area of a base station apparatus are determined without obtaining resource allocation information. To do so, a base station apparatus includes an RF unit 07-05-2012
20080259867METHOD AND SYSTEM FOR SCHEDULING PACKETS FROM DIFFERENT FLOWS TO PROVIDE FAIR BANDWIDTH SHARING - A method and system for scheduling packets to provide fair bandwidth sharing is provided. A packet scheduling system is composed of a communication link and flows from different network applications. These flows share the same communication link and have different bandwidth reservation according to different application requirements. In this invention, the bandwidth of the communication link is expressed into its binary form, and the binary coefficients are used to form a Square Weight Matrix. Moreover, each non-zero binary coefficient is expressed by a Weighted Binary Tree. The Square Weight Matrix is further spread by a Weight Spread Sequence and each Weighted Binary Tree is spread into a Time-Slot Array by using a Binary Reversal operation. When a flow is accepted by the scheduling system, the system first expresses the requested bandwidth of the flow into binary form, and then for each non-zero coefficients, the system allocates a node with the same weight from the Weighted Binary Trees to the flow. Accordingly, when a flow leaves the system, the Weighted Binary Trees nodes that have been allocated to the flow are de-allocated, and the corresponding terms of the TArrays are reset. The scheduling system schedules packets by sequentially scanning the Weight Spread Sequence. For a specific value of the scanned Weight Spread Sequence term, a corresponding TArray is then selected, and the flow that occupies the current term of the TArray is then chosen and served.10-23-2008
20110194528METHOD FOR ALLOCATING TIME AND FREQUENCY RESOURCE FOR RESOURCE REQUEST INDICATOR, METHOD FOR TRANSMITTING RESOURCE REQUEST INDICATOR AND DEVICE THEREOF - A method for allocating a time and frequency resource of a resource request indicator (RRI), a method for transmitting an RRI, and a device thereof are provided, which relate to a wireless communication technique and reduce the overhead of the time and frequency resource. The method for allocating a time and frequency resource of an RRI includes: allocating codes for an RRI and other uplink control signaling; and multiplexing the RRI and other uplink control signaling in the same time and frequency resource in a code division manner.08-11-2011
20110194527FREQUENCY AND TIME DOMAIN RANGE EXPANSION - For range expansion, a determination to enter range expansion may be made based on a signal strength differential for user equipment (UE) communications between a first class of base stations and a second class of base stations. If the signal strength differential is beyond a certain threshold, range expansion may be implemented. In range expansion, a signal is transmitted, on a resource coordinated with at least one of the first class of base stations, from one of the second class of base stations to the UE which could experience dominant interference from one of the first class of base stations if coordination were not performed. Transmission power may be reduced from one of the first class of base stations on that resource. The second signal may be transmitted within the region of the Physical Downlink Shared Channel.08-11-2011
20090147749COMBINED FREQUENCY-TIME DOMAIN POWER ADAPTATION FOR CDMA COMMUNICATION SYSTEMS - Practical transmission power adaptation in multicarrier code division multiple access (MC-CDMA) communications is using either a frequency domain technique or a time domain technique or a combined frequency and time domain technique in response to channel variations. With frequency domain power adaptation, the transmission power is allocated over the N′ (1≦N′≦N) strongest subcarriers rather than over all possible N subcarriers, where the strongest subcarriers are understood to exhibit the highest channel gains. A substantially optimal N′ can be chosen so that the average bit error rate (BER) is minimized. In the time domain power adaptation technique, transmission power is adapted so that the desired signal strength at the receiver output is maintained at a fixed level. In the combined time and frequency domain adaptation technique, the transmission power is first allocated over the N′ (1≦N′≦N) strongest subcarriers rather than over all possible N subcarriers and then it is adapted so that the desired signal strength at the receiver output is maintained at a fixed level.06-11-2009
20090122758Method and Apparatus for Transmitting HARQ Sub-Packets in a Wireless Communication System - In one embodiment of the present invention, a method and apparatus for the base station to transmit a series of HARQ sub-packets to a mobile station is disclosed. In another embodiment of the present invention, a method and apparatus for the base station to assign radio resources for the mobile station to transmit a series of HARQ sub-packets to a base station is disclosed.05-14-2009
20100118826Evolving-type user resource structure/channelization with enhanced diversity for OFDMA based time-varying channels - An evolving-type resource structure supports high data rate services at high mobile speeds. The evolving-type resource structure is an efficient diversity-exploiting user resource structure for fast time-varying frequency-selective fading channel environments. In one example, an evolving-type resource structure takes advantages of both band-type and interleaved-type structures which exploit both multiuser diversity and frequency diversity in fast time-varying channels. The evolving-type resource structure is applicable to centralized, semi-distributed and distributed access schemes and may be used in both downlink (DL) and uplink (UL) transmissions in a cellular system.05-13-2010
20100074217Method and Apparatus for Managing Sector of Base Station in Mobile Telecommunication Systems - Disclosed is a method for operating sectors of a base station in a mobile telecommunication system. For this, the method includes the steps of: outputting, at a prescribed time period equal to T1, data, including alpha sector data, beta sector data, and gamma sector data, which is to be transmitted to a mobile station, in sequence and by sectors; dividing a frequency in a scheme of time division at a time period which equals either tα, tβ or tγ and which corresponds to the data length by the sector of data which is output in the outputting data, and carrying out a frequency assignment in sequence and by the sector. Accordingly, only relevant data is transmitted to a sector assigned the frequency, and a traffic variation of each sector can be met.03-25-2010
20130077598METHOD AND APPARATUS FOR ALLOCATING AND TRANSMITTING TIME AND FREQUENCY RESOURCE FOR RESOURCE REQUEST INDICATOR - Method and apparatus are provided to allocate a time and frequency resource of a resource request indicator (RRI) and to transmit an RRI. Codes are allocated for an RRI and other (such as non-RRI) uplink control signaling. The RRI and other uplink control signaling can be multiplexed in the same time and frequency resource, such as through multiplexing in a code division manner.03-28-2013
20130077597WIRELESS RADIO ACCESS NETWORK CONTROL CHANNEL CAPACITY MANAGEMENT - Transmission capacity for a control channel sent to multiple mobile wireless devices in a wireless network is increased by transmitting the control channel using multi user multiple input multiple output transmissions (MU MIMO). Received signal quality measured at mobile wireless devices in a radio sector are communicated to a radio node and used to determine one or more sets of mobile wireless devices to share transmission of control channel elements on the same time and frequency resource element. The radio node indicates the use of MU MIMO and the selection of precoding matrices to each of the mobile wireless devices in the each set of mobile wireless devices.03-28-2013
20130039332METHOD AND APPARATUS FOR MULTIPLE-INPUT MULTIPLE-OUTPUT OPERATION - A wireless transmit/receive unit (WTRU) receives a downlink transmission from an eNodeB including a plurality of spatial layers transmitted to a plurality of WTRUs paired for multi-user MIMO. The WTRU decodes the downlink transmission based on a corresponding WTRU-specific reference signal. WTRU-specific reference signals are multiplexed using a frequency and code division multiplexing. WTRU-specific reference signals for different sub-group of antenna ports are multiplexed onto different subcarriers in a frequency domain and the WTRU-specific reference signals of the same sub-group of antennas ports are multiplied by an orthogonal cover code. The resource elements used for the WTRU-specific reference signals on antenna ports in one sub-group may be muted on antenna ports in another sub-group. A WTRU may transmit the uplink demodulation reference signal without precoding. The number of resource blocks allocated for the demodulation reference signal may be greater than the number of resource blocks allocated for the payload.02-14-2013
20130039335METHODS AND SYSTEMS FOR ALLOCATION OF MACRO CELL RESOURCES IN A DISTRIBUTED FEMTO CELL NETWORK AND A DISTRIBUTED RELAY STATION NETWORK - Methods and systems for reusing macro cell resources in femto cell base stations or relay stations in a non-collaborative manner are disclosed. In addition, orthogonal resource allocation between a macro cell base station and femto cell base stations/relay stations may be dynamically adjusted by considering user-population variance. Moreover, an additional level of spatial reuse by femto cell base stations or relay stations can be provided by employing macro cell user location information.02-14-2013
20130039333METHOD AND SYSTEM FOR MULTI-CARRIER PACKET COMMUNICATION WITH REDUCED OVERHEAD - A method and system for minimizing the control overhead in a multi-carrier wireless communication network that utilizes a time-frequency resource is disclosed. In some embodiments, one or more zones in the time-frequency resource are designated for particular applications, such as a zone dedicated for voice-over-IP (VoIP) applications. By grouping applications of a similar type together within a zone, a reduction in the number of bits necessary for mapping a packet stream to a portion of the time-frequency resource can be achieved. In some embodiments, modular coding schemes associated with the packet streams may be selected that further reduce the amount of necessary control information. In some embodiments, packets may be classified for transmission in accordance with application type, QoS parameters, and other properties. In some embodiments, improved control messages may be constructed to facilitate the control process and minimize associated overhead.02-14-2013
20130039334METHOD AND DEVICE FOR CONTROL INFORMATION TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting control information through a PUCCH in a wireless system and to a device therefore.02-14-2013
20130039331AGGREGATED CARRIER SYNCHRONIZATION AND REFERENCE SIGNAL TRANSMITTING AND RECEIVING METHODS, DEVICES AND SYSTEMS - A node of a wireless network transmits information to a user equipment over an aggregated carrier that includes a primary carrier having a first set of primary carrier time/frequency resources and a secondary carrier having a second set of secondary carrier time/frequency resources. Synchronization signals and/or reference symbols are transmitted to the user equipment on the secondary carrier less often than on the primary carrier. An indication of when and/or how often the synchronization signals and/or reference symbols will be transmitted to the user equipment on the secondary carrier may also be transmitted to the user equipment over the primary carrier. By transmitting synchronization signals and/or reference symbols to the user equipment on the secondary carrier less often than on the primary carrier, resources of the secondary carrier may be conserved, energy efficiency of the secondary carrier may be increased, and/or interference with other cells may be reduced or prevented.02-14-2013
20130083769Wireless Communication Control Channel Systems and Methods - Radio resources can be allocated in a manner avoiding a zero power problem by selecting one of two reference signals for control channel estimation, and transmitting the selected reference signal in a resource block (RB) or RB pair carrying the control channel. The two reference signals span common resource elements (REs) in the RB or RB pair. Alternatively, a zero power problem can be avoided by assigning modified WALSH codes to the two reference signals, and transmitting the two reference signals in the RB or RB pair carrying the control channel in accordance with their modified WALSH codes. The modified WALSH codes include complex constants having a non-zero phase difference with one another. A control channel can be evenly partitioned in accordance with a checkerboard partitioning technique.04-04-2013
20130083770CONTROL CHANNEL ARCHITECTURE WITH CONTROL INFORMATION DISTRIBUTED OVER MULTIPLE SUBFRAMES - Control information (04-04-2013
20130083768UPLINK BASEBAND SIGNAL COMPRESSION METHOD, DECOMPRESSION METHOD, DEVICE AND SYSTEM - Embodiments of the present invention disclose an RRU, which performs IDFT on a PUSCH signal that is obtained after resource block demapping, where due to a characteristic of an extremely low peak to average power ratio of SC-FDMA modulation, a signal after IDFT has an extremely low peak to average power ratio at this time, and an amplitude range of the signal changes slightly; amplitude/phase conversion is performed on the signal after the IDFT, where the signal after the IDFT is represented by using amplitude and phase, and then amplitude quantization and phase quantization are performed respectively to obtain a quantized amplitude signal and a quantized phase signal respectively.04-04-2013
20130034079WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD - Provided is a wireless communication device including, in a resource block assigned from among a plurality of resource blocks arranged in a grid pattern on a time axis and a frequency axis, a wireless communication unit for not performing transmission in a non-transmission region and for performing transmission in another region in the source block, the non-transmission region being set at a boundary with an adjacent resource block in a time direction or a frequency direction.02-07-2013
20100046465METHOD FOR ALLOCATING TIME AND FREQUENCY RESOURCE FOR RESOURCE REQUEST INDICATOR, METHOD FOR TRANSMITTING RESOURCE REQUEST INDICATOR AND DEVICE THEREOF - A method for allocating a time and frequency resource of a resource request indicator (RRI), a method for transmitting an RRI, and a device thereof are provided, which relate to a wireless communication technique and reduce the overhead of the time and frequency resource. The method for allocating a time and frequency resource of an RRI includes: allocating codes for an RRI and other uplink control signaling; and multiplexing the RRI and other uplink control signaling in the same time and frequency resource in a code division manner.02-25-2010
20100046463Spectrum sharing between OFDM and non-OFDM radios - A signal is generated in the time domain (e.g., GSM, CDMA waveform), digitally sampled at a rate N per symbol interval T over an observation window of length JT to achieve a vector of JN samples. The JN samples are transformed via a DFT of size JN to the frequency domain, where they are mapped using the DFT coefficients to subcarriers of an OFDM or SC-FDMA waveform. Then an IDFT is executed to convert the samples back to the time domain, which are then transmitted on the mapped subcarriers. For the case of a portable device cognitive radio, subcarriers other than the JN subcarriers may be used for pilots or zero weights may be applied to them. For the case of a network node, pilots or samples for other users may be mapped to the other subcarriers, in which case the IDFT is size M>JN for transforming all the user signals.02-25-2010
20100046464METHOD OF SUPPORTING HETEROGENEOUS MODE IN A WIRELESS COMMUNICATION SYSTEM - A data communication method is disclosed, which can simultaneously support heterogeneous systems in a wireless communication system based on multiple carrier multiple access. For a dual mode between heterogeneous systems, the data communication method includes transmitting control information for a first system mode and a second system mode to a mobile station through a channel resource zone used in the first system mode, and performing data transmission and reception between the system and the mobile station through channel resource zones allocated from the first system mode or the second system mode.02-25-2010
20100103901BASE STATION, COMMUNICATION TERMINAL, TRANSMISSION METHOD, AND RECEPTION METHOD - A base station includes a scheduler configured to perform frequency scheduling for each subframe; a control channel generating unit configured to generate a control channel including common control information to be mapped to radio resources distributed across a system frequency band and specific control information to be mapped to one or more resource blocks allocated to each selected user device; and a transmission signal generating unit configured to generate a transmission signal by time-division-multiplexing the common control information and the specific control information according to scheduling information from the scheduler. The common control information includes a format indicator representing one of preset options that indicates the number of symbols occupied by the common control information in one subframe. The common control information includes information units with a predetermined data size. The number of the information units is less than or equal to a specified multiplicity included in broadcast information.04-29-2010
20120182964PILOT AND CHANNEL ESTIMATION METHOD FOR SDMA MIMO TRANSMISSION DOWNLINK - A pilot and channel estimation method for SDMA MIMO transmission downlink is provided in the present invention, and the method provides possibility for saving the orthogonal pilot resources; the pilot signals of different users in the transmitting antenna domain can occupy the same time-frequency resources, and thereby the pilot overhead of system resources can be reduced greatly; the method includes: for the MIMO transmission downlink that employs pre-coding for SDMA, taking the quantity of orthogonal pilot resources occupied by the users in the pre-coding domain as the number of data streams that can be transmitted or the number of spatial dimensions occupied first, at the transmitting end of the base station; then, performing SDMA transmission pre-coding for the orthogonal pilots in the pre-coding domain in the same way as the data signals, to obtain the pilot signals of the users in the transmitting antenna domain; wherein, the pilots of the users in the pre-coding domain can be orthogonal in the frequency domain or code domain, and the pilots of different users in the pre-coding domain can be identical or not identical to each other; the pilot signals of different users in the transmitting antenna domain can occupy the same time-frequency resources.07-19-2012
20120182963RESERVING TRANSMISSION RESOURCES - A method, apparatus, and computer program for acquiring transmission resources during a transmission period is provided. A first communication apparatus is arranged to utilize at least a second communication apparatus to reserve at least one additional transmission band for the first communication apparatus during the transmission period of the first communication apparatus. The first communication apparatus is configured to increase its transmission band during the transmission period upon successful exchange of transmission request and transmission permission messages, wherein the transmission request and transmission permission messages are used to identify available additional transmission bands.07-19-2012
20120182962METHODS AND APPARATUS FOR SCHEDULING PEER TO PEER TRAFFIC IN CELLULAR NETWORKS - A wireless terminal receives peer to peer resource control information from a base station. The peer to peer resource control information is used by the wireless terminal in a peer to peer network to control transmission scheduling and/or resource utilization. The base station sends the control signals at a first rate which is slower than the rate at which wireless terminals make transmission decisions for traffic slots. During the intervals between receipt of the base station control signals, wireless terminals make transmission decisions with regard to multiple traffic segments. The decisions are also influenced based on peer to peer signaling occurring between the wireless terminals in the network for each traffic slot. Resource utilization feedback information is provided from the wireless terminal to the base station. Based on the feedback information the base station updates the resource utilization control information and sends updated resource utilization control signals to the wireless terminals.07-19-2012
20090154419SCHEDULING METHOD FOR MULTI-USER MIMO - A priority computation process computes a priority of each user for each RB (Resource Brock) using a reception SINR. A maximum priority user selection/RB allocation process selects a user with the maximum priority for an unallocated RB and allocates the RB to the user. A frequency axis/space axis unallocated RB presence determination process proceeds to scheduling for a next user if there is an unallocated RB on the frequency or space axis. A projected channel vector update process updates a projected channel vector of an unselected user by GS orthogonalization. An orthogonal coefficient computation process computes an orthogonal coefficient. A corrected SINR computation process computes a corrected SINR. A next MIMO layer priority computation process computes priorities of unselected users for a corresponding RB in the next multiple MIMO layer. The priorities of the unselected users are used in the next user scheduling processing.06-18-2009
20100040015USING A SYNCHRONIZATION CHANNEL TO SEND QUICK PAGING SIGNALS - In an orthogonal frequency division multiple access communication system, a base station transmits a quick paging signal simultaneously with a synchronization signal during the same transmission symbol time period. Even though these different signals are transmitted during the same transmission symbol time period, a periodicity of the synchronization signal is maintained to facilitate rapid and cost-effective synchronization by subscriber stations with the base station. The quick paging signal alerts subscriber stations about whether to stay awake for a subsequent page or to go into a power saving sleep mode.02-18-2010
20100067478Method of selecting suitable frequency bands for data transmission between a network node and a user equipment within a mobile communications network - A method of selecting suitable frequency bands for data transmission between a network node and a user equipment within a mobile communications network. A method selects suitable frequency bands for data transmission between a network node and user equipment within a mobile communications network. A scheduler on the network node side selects data transmission mode depending on the user equipment capability of receiving data from at least two frequency bands simultaneously. The scheduler preferably selects the data transmission mode in the following way: simultaneous data transmission over at least two frequency with or without splitting traffic data or data transmission over only one available frequency band. For data transmission, a radio frame structure (Big MAC element) is dynamically established in the so-called medium access control layer, shortened so-called MAC-layer, by using concurrent radio resources from other frequency bands or other radio access technologies.03-18-2010
20100067480SYSTEMS AND METHODS EMPLOYING MULTIPLE INPUT MULTIPLE OUTPUT (MIMO) TECHNIQUES - A system has multiple antennas, a Time Division Multiplexing (TDM) module creating TDM slots, and demultiplexing circuitry inserting within the TDM slots Orthogonal Frequency Division Multiplexing (OFDM) symbols and associating the TDM slots with data sub-streams. The system also includes precoding circuitry associating the data sub-streams with multiple tones. Each of the respective tones corresponds to a respective one of the antennas. The antennas transmit the data sub-streams using the multiple tones.03-18-2010
20130051360SATELLITE COMMUNICATION SYSTEM EMPLOYING A COMBINATION OF TIME SLOTS AND ORTHOGONAL CODES - A satellite communication system for communicating between a plurality of user terminals is disclosed having at least one satellite which provides multiple beams, a plurality of user terminals that communicate with each other via satellites of said constellation, at least one gateway connected to a public switched telephone network and communicating with at least one user terminal over the satellite communication system wherein each of said user terminals within a given frequency band is distinguished from another of the user terminals employing a combination of time slots and orthogonal codes implemented in a forward and return link. Each of the user terminals is equipped to initiate or receive or terminate packet data messages. Each of said user terminals is handed off from one beam of a satellite to another beam of said satellite. The hand off is predicated on signal strength determined at said plurality of user terminals.02-28-2013
20130051359Method and Arrangement for Transmission of Data Packets - The invention relates to a method and arrangement for improving predictability of inter-cell interference in wireless communication systems. A first network radio entity (02-28-2013
20130051358Channel Sensing in Uplink Transmission - A solution for uplink transmission in a cellular communication system is disclosed. The same uplink time-frequency resource are scheduled to at least two terminal devices, and sensing periods of unequal lengths are allocated to the at least two terminal devices. The sensing period defines a duration a terminal device senses the uplink time-frequency resource for a conflicting transmission before transmitting in the uplink time-frequency resource.02-28-2013
20130089066WIRELESS COMMUNICATION SYSTEM AND COMMUNICATION METHOD FOR WIRELESS COMMUNICATION SYSTEM - A mobile device includes a transmitting unit that, each time an ON operation of a switch in a first mode is performed, transmits a wireless signal corresponding to the first mode ON operation by changing a frequency band among three or more frequency bands and that, when an ON operation of the switch in a second mode is performed, transmits a wireless signal, corresponding to the second mode ON operation, in the frequency band selected at that time. The transmitting unit includes a frequency band computing unit that selects one of the three or more frequency bands through a computation for changing a communication environment when the second mode ON operation of the switch is repeatedly performed. A receiver of the in-vehicle device receives a wireless signal transmitted from the transmitting unit and recognizes command information allocated in advance in correspondence with each ON operation mode of the switch.04-11-2013
20130089068CONTROL CHANNEL ARCHITECTURE WITH CONTROL INFORMATION DISTRIBUTED OVER MULTIPLE SUBFRAMES ON DIFFERENT CARRIERS - Control information (04-11-2013
20130089065Time and Frequency Synchronization - The scheduling flexibility of CSI reference signals enables time and frequency synchronization using multiple non-zero CSI-RSs transmitted in the same subframe, or using CSI-RSs transmitted in the same subframe with other synchronization signals. Also, multiple synchronization signals may be scheduled in the same subframe to enable fine time and frequency synchronization without cell-specific reference signals.04-11-2013
20090323628METHOD FOR TRANSMITTING AND RECEIVING MAP IN WIRELESS MOBILE COMMUNICATION SYSTEM AND SYSTEM THEREFOR - An apparatus and method for transmitting MAP by a base station in a wireless mobile communication system using a frame that includes a plurality of mini frames occupying a specific time period, each of the mini frames including a plurality of Resource Blocks (RBs) occupying a specific frequency band are provided. A number of RBs to be occupied by a data burst to be transmitted is determined. A first variable indicative of a number of mini frames to be occupied by the data burst is determined based on a resource amount corresponding to the number of RBs and an available resource amount of the mini frame. A second variable is determined based on the number of RBs and the first variable. MAP is transmitted that includes the first variable, the second variable, and information indicating RBs where a resource is allocated in a mini frame first located in a time domain among the mini frames to be occupied by the data burst. Each of the RBs where the resource is allocated represents an RB where one of packets segmented from the data burst is allocated.12-31-2009
20100118827METHODS AND SYSTEMS FOR ALLOCATION OF MACRO CELL RESOURCES IN A DISTRIBUTED FEMTO CELL NETWORK AND A DISTRIBUTED RELAY STATION NETWORK - Methods and systems for reusing macro cell resources in femto cell base stations or relay stations in a non-collaborative manner are disclosed. In addition, orthogonal resource allocation between a macro cell base station and femto cell base stations/relay stations may be dynamically adjusted by considering user-population variance. Moreover, an additional level of spatial reuse by femto cell base stations or relay stations can be provided by employing macro cell user location information.05-13-2010
20130089067METHOD AND APPARATUS FOR OPERATING MULTI-BAND AND MULTI-CELL - Disclosed are a method and an apparatus for operating multi-band and multi-cell. An Enhanced Node B (eNB) transmits a synchronization channel and a broadcasting channel for narrow-band user equipments (UEs) through a first band narrower than a system band, the first band being located in a center band of the system band, and transmits a control channel for scheduling a data channel for a first narrow-band UE which is one of the narrow-band UEs through a second band equal to or wider than the first band, the second band not overlapping the first band within the system band. The first band is designed to be matched to a band where the synchronization channel and the broadcasting channel of a host cell using an entire system band are transmitted.04-11-2013
20090303961METHOD, TRANSCEIVER AND TELECOMMUNICATION SYSTEM FOR GENERATING REFERENCE SEQUENCE MATRICES AND FOR MAPPING ELEMENTS THEREOF - An method for, in a cellular telecommunication system, generating reference sequence matrices and for mapping elements of said reference sequence matrices to reference signal positions having predetermined locations in two-dimensional multi-carrier time-frequency symbol spaces is provided. According to the method, a matrix S12-10-2009
20090303960METHOD AND APPARATUS FOR ALLOCATING AND PROCESSING SEQUENCES IN COMMUNICATION SYSTEM - A method and apparatus for allocating and processing sequences in a communication system is disclosed. The method includes: dividing sequences in a sequence group into multiple sub-groups, each sub-group corresponding to its own mode of occupying time frequency resources; selecting sequences from a candidate sequence collection corresponding to each sub-group to form the sequences in the sub-group by: the sequences in a sub-group i in a sequence group k being composed of n sequences in the candidate sequence collection, the n sequences making a |r12-10-2009
20090303959Base Station And Frequency Changing Method In Mobile Communication System - A frequency changing method that can avoid a collision between uplink frequencies by using a simple algorithm. According to this method, a list of the frequencies of mobile stations whose receive status was OK and a list of the frequencies of mobile stations whose receive status was NG, requiring each mobile station to retransmit by changing its frequency, are constructed at a base station; then, for each of the frequencies in the receive status NG list, the amount of shift, Δf, predetermined in the system, is added and, if the result coincides with any one of the frequencies in the receive status OK list, Δf is added once again.12-10-2009
20090303958System and Method for Burst Separation and Extended Interleaving Length - A method includes allocating frame capacity between physical layer pipes dividing a frame and physical layer pipes into a plurality of subframes, wherein each subframe carries one burst from each physical layer pipe; selectively time shifting the plurality of bursts such that a defined time shift exists between corresponding bursts in each subframe within the frame; and appending the subframes after each other in a sequence. Each frame may include two or more radio frequency channels, each radio frequency channel including subframes. The method may further include selectively time shifting one or more of the radio frequency channels such that a defined time shift exists between corresponding radio frequency channels in each frame; and for any subframes of a radio frequency channel which have been selectively shifted beyond the end of the frame, cyclically shifting such subframes to the beginning of the frame.12-10-2009
20090303957METHOD FOR DYNAMICALLY ALLOCATING RESOURCES IN A NETWORK OF STATION CLUSTERS - A distributed method for dynamically assigning time-frequency resources in a network comprising several stations is disclosed. The stations are organized in groups (or interfaces) of several stations with each group comprising an allocation table Tsi. Each group exchanges this allocation table by means of a signaling protocol with groups that are defined as being in conflict with it by a constraints graph. The method uses an arbitration function to settle the conflicts and the assignments of allocations between the groups in conflict according to the constraints graph. In performing the method, each interface Ji transmits the allocation table TJi associated with it to the interfaces K indicated as being in conflict in the constraints graph. An interface Ji looks, for each allocation AJi that it has entered in its table TJi, whether the allocation AJi is used in the table received from an interface K that is in conflict. The interface Ji uses the arbitration function to modify the allocation AJi in the table TJi.12-10-2009
20130070724FREQUENCY SELECTIVE AND FREQUENCY DIVERSITY TRANSMISSIONS IN A WIRELESS COMMUNICATION SYSTEM - Techniques for efficiently supporting frequency selective scheduling (FSS) and frequency diversity scheduling (FDS) are described. In one design, a first transmission for an FSS user may be mapped to a subband selected for this user from among at least one subband in a first frequency region of the system bandwidth. The first transmission may be mapped to a fixed portion or different portions of the selected subband in different time intervals. A second transmission for an FDS user may be mapped across multiple subbands in a second frequency region of the system bandwidth. The second transmission may be mapped to different subbands or different resource blocks in the second frequency region in different time intervals. Each time interval may correspond to a symbol period, a slot, a subframe, etc. The frequency hopping may be performed based on a fixed hopping pattern or a pseudo-random hopping pattern.03-21-2013
20130070725Method and Apparatus for Sounding Reference Signal Resource Allocation in Long Term Evolution System - The present invention provides a method for Sounding Reference Signal (SRS) resource allocation in a Long Term Evolution (LTE) system, including: a system side setting different SRS transmission periods to correspond to different cycle shifts, and during the process of allocating SRS resources for user equipment (UE), setting a cycle shift adopted by the UE according to the SRS transmission period adopted by the UE. The method and apparatus of the present invention realize simple and effective SRS resource multiplexing with high utilization ratio among UEs with different periods.03-21-2013
20110058528SYMBOL TIMING SYNCHRONIZATION OBTAINING METHOD AND APPARATUS ROBUST TO FREQUENCY OFFSET IN CELL SEARCH OF WIRELESS COMMUNICATION SYSTEM - Disclosed is a symbol synchronization obtaining apparatus robust to a frequency offset in a cell search of a wireless communication system. The symbol synchronization obtaining apparatus robust to a frequency offset in a cell search of a wireless communication system may include a sequence generator to generate a base sequence for obtaining the symbol synchronization, a synchronization pattern generator to generate a modified sequence based on the base sequence, and to generate a synchronization pattern by combining the modified sequence and the base sequence, a frequency mapping unit to perform mapping of transmission information to a time area and a frequency area, based on the synchronization pattern, for generating a transmission frame, and a transmitting unit to transmit the transmission frame.03-10-2011
20110038346WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION DEVICE, AND WIRELESS COMMUNICATION METHOD - A wireless communication system includes a first communication device which arranges a frequency signal into which a single carrier signal is converted by time-to-frequency conversion in subcarriers and wirelessly transmits a resultant signal and a second communication device which receives the signal wirelessly transmitted by the first communication device. The wireless communication system includes a selection unit which calculates, for each determined selection candidate as a combination of a predetermined segment size and information indicating predetermined average transmission power, a value indicating reception quality in the second communication device upon transmission by the first communication device by using an arrangement using the predetermined segment size, and the predetermined average transmission power, and which selects a selection candidate to be used upon transmission by the first communication device from among the selection candidates based on the calculated value indicating the reception quality. Therefore, an excellent transmission efficiency is obtained.02-17-2011
20110038345METHOD AND DEVICE FOR REQUESTING AND ALLOCATING BANDWIDTHS IN WIRELESS COMMUNICATION SYSTEMS - To address the drawbacks of the current bandwidth requesting and allocation in the wireless broadband access network, the present invention proposes a technical solution of fast bandwidth requesting and allocation, wherein the MS sends a bandwidth allocation request message to the BS for only once, and the interactions between the BS and the MS are decreased so as to increase the efficiency of bandwidth requesting and allocation, effectively shorten the transmission waiting time of traffic data, and especially improve the support for latency-sensitive data traffic. Due to the fact that the interactions between the BS and the MS are decreased, various processing resources in the BS and the MS are spared. Additionally, the BS can also adjust the size of the time/frequency resource block on which each mobile station sends the bandwidth allocation request message according to the number of the mobile stations covered by the base station, and/or according to the traffic types in each mobile station, so as to make the whole wireless communication system (comprising one BS and one or more MS covered by the BS) operate efficiently.02-17-2011
20110038344APPARATUS AND METHOD FOR INITIALIZATION AND MAPPING OF REFERENCE SIGNALS IN A COMMUNICATION SYSTEM - An apparatus and method for initialization and mapping of reference signals in a communication system. In one embodiment, the apparatus includes a processor and memory including computer program code. The memory and the computer program code are configured to, with the processor, cause the apparatus to generate a reference signal employable with a plurality of physical resource blocks corresponding to a bandwidth of a communication system, and allocate resource elements of an assigned physical resource block from the plurality of physical resource blocks to a user equipment. The memory and the computer program code are further configured to, with the processor, cause the apparatus to generate a dedicated reference signal for the user equipment by allocating elements of the reference signal in accordance with allocated resource elements of the assigned physical resource block.02-17-2011
20110038343Distributed Beacon Enabled Wireless Networks - In a wireless network that includes multiple nodes, each periodic announcement cycle of a communication schedule is partitioned into a set of time slots, including a set of management time slots, a set of beacon time slots, and a set of superframe time slots. Management frames are broadcast during the management slot to specify beacons. Beacons are transmitted during the beacon slots to specify when to transmit the superframes during the superframe time slots.02-17-2011
20110013585PILOT SIGNAL TRANSMISSION METHOD AND MOBILE COMMUNICATION SYSTEM - A method of transmitting pilot signals for channel compensation in a mobile communication system is disclosed. In the disclosed method, a first pilot signal and a second pilot signal are time-division multiplexed together with a data signal of a user into a time-division multiplexed signal which data signal is assigned a certain bandwidth; the time-division multiplexed signal is frequency-division multiplexed together with time division multiplexed signals of other users when wirelessly transmitted; and the first pilot signal is assigned a bandwidth larger than the bandwidth of the data signal and the second pilot signal is assigned a bandwidth smaller than the bandwidth of the data signal.01-20-2011
20110013584METHOD TO ALLOCATE TRANSMISSION RESOURCES IN A CELL NETWORK OF COOPERATIVE TYPE - The invention concerns a method to allocate transmission resources in a cell network of cooperative type. Each cell comprises a source, a receiver and optionally a half-duplex relay to relay data transmitted by the source to the receiver. The invention draws advantage from the half-duplex mode of a relay belonging to a cell, by allocating to the source of a neighbouring cell a resource used by this relay during one same transmission timeslot.01-20-2011
20110013583CONSTRUCTING VERY HIGH THROUGHPUT SHORT TRAINING FIELD SEQUENCES - Certain aspects of the present disclosure relate to a technique for constructing a short training field (STF) sequence in a preamble to reduce a peak-to-average power ratio (PAPR) at a transmitter, while having a defined repetition period.01-20-2011
20120188977METHOD AND APPARATUS FOR TRANSMITTING SYNCHRONIZATION SIGNALS IN AN OFDM BASED CELLULAR COMMUNICATIONS SYSTEM - Provided is a method and apparatus for transmitting a synchronization signal for cell search in an Orthogonal Frequency Division Multiplexing (OFDM) communications system. The method includes acquiring Primary Synchronization CHannel (P-SCH) sequence and Secondary Synchronization CHannel (S-SCH) sequence; mapping the P-SCH sequence and the S-SCH sequence onto subcarriers; generating OFDM symbols including the P-SCH sequence and the S-SCH sequence mapped onto subcarriers; and transmitting the OFDM symbols, wherein a frame comprising a plurality of OFDM symbols, a part of the plurality of OFDM symbols in the frame is used for transmitting Synchronization CHannel (SCH) comprising P-SCH and S-SCH, and wherein the P-SCH and the S-SCH are mapped to adjacent OFDM symbols and the S-SCH is mapped to subcarriers with a predetermined interval in a frequency domain within an OFDM symbol.07-26-2012
20090268686WIRELESS TRANSMITTER AND WIRELESS TRANSMISSION METHOD - A wireless transmitter of the present invention includes n (n being an integer of 2 or more) transmission antennas, a transmission circuit controller that, based on reception qualities reported from terminals, assigns a chunk to each terminal, and sends a phase-control report signal that determines whether to perform phase-control, to that chunk, and a transmission circuit unit that, to each of the n transmission antennas, performs phase-control based on the phase-control report signal, and applies a delay that obtains an optimum transmission diversity effect among a plurality of transmission diversity effects.10-29-2009
20090067384METHOD AND SYSTEM TO ENABLE SIMULTANEOUS RECEPTION OF PLURALITY OF SERVICES IN DVB SYSTEMS - A method comprises dividing a time frequency frame into a plurality of slots, the frame having one or more radio-frequency (RF) channels, determining a maximum slot length, and scheduling service data in symbols such that all service data symbols are within the maximum slot length of symbols corresponding to at least one common service part.03-12-2009
20120224560MOBILE COMMUNICATION METHOD AND RADIO BASE STATION - A mobile communication method according to the present invention includes a step of assigning one or a plurality of Zadoff-Chu sequences to each of cells #A to #G, a step of generating a plurality of RACH preambles by performing a cyclic shift with respect to the assigned Zadoff-Chu sequences by a predetermined period Ncs in each of the cells #A to #G, and a step of acquiring the reception timing distribution of the RACH preambles in the predetermined period Ncs in each of the cells #A to #G.09-06-2012
20120224559METHOD AND APPARATUS FOR NOTIFICATION OF EMITTED ENERGY - The present invention discloses a method and an apparatus for notification of emitted energy. The method includes: performing an emitted energy decrease on resource elements in a current cell that have a same time-frequency location as part or all of resource elements where a reference signal of a neighboring cell is located; obtaining an emitted energy parameter of an energy non-decreased resource element (NRE) in the current cell according to a decreased amount of emitted energy of an emitted energy decreased resource element (DRE); and notifying the emitted energy parameter of the NRE to a user equipment (UE). According to embodiments of the present invention, the waste of emitted energy may be avoided, the emitted energy of part of REs is increased, and further, the signal to interference plus noise ratio (SINR) and throughput of service data may be increased.09-06-2012
20120224558PROPORTIONAL-FAIR RADIO RESOURCE MANAGEMENT - In one embodiment, the unit share data rates for a plurality of mobile stations are determined with regard to two resource groups. A differentiation factor for each mobile station is formed from a ratio of its unit share data rates. The resulting differentiation factors are sorted and classified into two groups according to a proportional fair border determining function. A first one of the resource groups is allocated to the mobile stations corresponding to a first one of the differentiation factor groups. Similarly, a second one of the resource groups is allocated to the mobile stations corresponding to a remaining second one of the differentiation factor groups.09-06-2012
20130064217EFFICIENT UPLINK FEEDBACK IN A WIRELESS COMMUNICATION SYSTEM - A method for transmitting control information by transmitting a reference signal from a first transceiver to a second transceiver, in response to the reception of the reference signal, determining at the second transceiver a plurality of control channel elements based upon the received reference signal, jointly encoding the plurality of control channel elements at the second transceiver to generate a control signal, and transmitting the control signal from the second transceiver to the first transceiver.03-14-2013
20130064218METHODS AND SYSTEMS FOR ALLOCATION OF MACRO CELL RESOURCES IN A DISTRIBUTED FEMTO CELL NETWORK AND A DISTRIBUTED RELAY STATION NETWORK - A method implemented in a wireless network including a first base station and a second base station is disclosed. The method includes, upon a change in a load condition, transmitting from the second base station to the first base station load information through backhaul in order to coordinate the first base station and the second base station, allocating, to the second base station, one or more tiles corresponding to one or more time-frequency resource blocks of orthogonal frequency division multiple access (OFDMA), and allocating remaining tiles to the first base station. Other methods and apparatuses are also disclosed.03-14-2013
20130064216DMRS Association and Signaling for Enhanced PDCCH in LTE Systems - A method is provided for operating a UE in a wireless communication network. The method comprises sending, by the UE, an ACK/NACK message after receiving data on a PDSCH scheduled by an E-PDCCH, wherein the sending is from at least one antenna port and uses at least one physical resource, and wherein the at least one physical resource is determined based at least partially on a resource over which the E-PDCCH is received, and wherein the resource over which the E-PDCCH is received consists of at least one eCCE.03-14-2013
20130064214METHODS AND APPARATUS FOR INTERFERENCE BASED JOINT SCHEDULING OF PEER TO PEER LINKS WITH WWAN - A method of operating a first wireless device includes receiving a grant from a base station for peer-to-peer communication with a second wireless device using time-frequency resources utilized by a third wireless device for WWAN communication with the base station. In addition, the method includes receiving a transmit power for the peer-to-peer communication with the grant. The transmit power is determined based on an interference that can be caused to transmissions received by the base station from the third wireless device. Furthermore, the method includes communicating with the second wireless device at a power less than or equal to the received transmit power using peer-to-peer communication on the time-frequency resources.03-14-2013
20130064215Enhanced PDCCH with Transmit Diversity in LTE Systems - A method is provided for communication in a wireless telecommunications network. The method comprises transmitting an extended physical downlink control channel to a user equipment using transmit diversity from at least one demodulation reference signal port.03-14-2013
20130163556METHOD AND APPARATUS OF RESOURCE ALLOCATION FOR MACHINE TYPE COMMUNICATION DEVICE, METHOD AND APPARATUS FOR RECEIVING DATA FOR MACHINE TYPE COMMUNICATION - Disclosed herein relates to a resource allocation method for a machine type communication (MTC) device. The resource allocation method for the MTC device includes allocating a control channel with respect to a user terminal to a first time domain of a sub frame, and mixing at least one of a control channel with respect to the at least one MTC device, a data channel with respect to the user terminal, and a data channel with respect to the MTC device in a second time domain of the sub frame, and allocating the mixed channel to the second time domain of the sub frame. Accordingly, in a wireless communication system, control information and data may be transmitted and received to and from the MTC device while maintaining compatibility with the user terminal.06-27-2013
20090238137BASE STATION AND METHOD OF GENERATING A SYNCHRONIZATION CHANNEL - A synchronization channel is generated by generating, as a P-SCH basic waveform, a signal sequence in which codes with constant amplitude in a frequency domain are placed at intervals of a predetermined number of subcarriers; transforming the signal sequence into a time domain; multiplying the signal sequence transformed into the time domain with a predetermined code sequence; retransforming the signal sequence multiplied with the predetermined code sequence into the frequency domain; generating an S-SCH signal sequence; and multiplexing the signal sequence retransformed into the frequency domain and the S-SCH signal sequence.09-24-2009
20090232087User Equipment Multiplexing In Downlink Multiuser, Multiple Input Multiple Output Orthogonal Frequency Division Multiple Access - This invention is a method of downlink, multiuser, multiple input, multiple output communication between a single base station and plural user equipment. Resource buffers are distributed into sub-bands. Each user equipment is assigned to a sub-band with at least one sub-band assigned plural user equipment. The base station transmits user equipment according to assigned sub-bands. A single user equipment may be assigned one sub-band while plural user equipment are assigned to another sub-band. In one embodiment the base station has N transmit antennas. N user equipment is assigned to a first sub-band and less than N user equipment is assigned to a second sub-band. In another embodiment a first second user equipment is assigned a first sub-band and the first and a third user equipment are assigned to a second sub-band.09-17-2009
20090232086METHODS AND APPARATUS FOR ACQUIRING AND USING MULTIPLE CONNECTION IDENTIFIERS - Methods and apparatus related to a peer to peer wireless communications system supporting the association of multiple connection identifiers with a single connection between a pair of wireless terminals are described. A differentiated quality of service is supported by assigning different numbers of connection identifiers to different connections. The number of connection identifiers assigned to a wireless terminal pair for a connection is a function of one of: data rate, priority information, and quality of service information. Being allocated a higher number of connection identifiers results in being allocated a higher number of traffic transmission request resources, thus increasing the likelihood that the connection is permitted to use a traffic transmission segment. The allocation of connection identifiers is performed in a distributed manner in which handshake signaling occurs between a wireless terminal pair seeking to establish a connection, e.g., as part of a multi-step paging scheme.09-17-2009
20090232085COMMUNICATIONS SYSTEM USING FRAME STRUCTURE FOR DIFFERENT WIRELESS COMMUNICATIONS PROTOCOLS AND RELATED METHODS - A communications system may include a first wireless communications device communicating based upon a first wireless communications protocol, a second wireless communications device communicating based upon a second wireless communications protocol different from the first wireless communications protocol, and a wireless base station. The wireless base station may communicate with the first wireless communications device and the second wireless communications device based upon a frame structure. The frame structure may be defined by sub-carriers at respective different frequencies and symbols at respective different times. The frame structure may include a frame control header, a first frame portion for communicating with the first wireless communications device based upon the first wireless communications protocol, and a second frame portion for communicating with the second wireless communications device based upon the second wireless communications protocol.09-17-2009
20090232084METHOD AND SYSTEM FOR MULTI-CARRIER PACKET COMMUNICATION WITH REDUCED OVERHEAD - A method and system for minimizing the control overhead in a multi-carrier wireless communication network that utilizes a time-frequency resource is disclosed. In some embodiments, one or more zones in the time-frequency resource are designated for particular applications, such as a zone dedicated for voice-over-IP (VoIP) applications. By grouping applications of a similar type together within a zone, a reduction in the number of bits necessary for mapping a packet stream to a portion of the time-frequency resource can be achieved. In some embodiments, modular coding schemes associated with the packet streams may be selected that further reduce the amount of necessary control information. In some embodiments, packets may be classified for transmission in accordance with application type, QoS parameters, and other properties. In some embodiments, improved control messages may be constructed to facilitate the control process and minimize associated overhead.09-17-2009
20090046653SYSTEM AND METHOD FOR PEER-TO-PEER BEAM DISCOVERY AND COMMUNICATION IN INFRASTRUCTURE BASED WIRELESS NETWORKS USING DIRECTIONAL ANTENNAS - A system and method for performing a beam discovery between peer stations is disclosed. A channel time message indicating an allocation of a first time period for a peer-to-peer beam discovery (PBD) is received, where the PBD is configured to discover a beam direction to be used for data transfer to a peer station. The PBD is executed between two peer stations during the first time period. Data is transferred to the peer station via the discovered beam direction if the PBD is successful.02-19-2009
20090046652COMMUNICATION TERMINAL APPARATUS, COMMUNICATION CONTROL APPARATUS, WIRELESS COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - To provide a communication terminal apparatus that efficiently transmits feedback on information regarding the reception quality and transmission form to a communication control apparatus. A communication terminal apparatus (02-19-2009
20120113955METHOD FOR TRANSMITTING A RANGING SIGNAL IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method in which a terminal transmits a ranging signal in a wireless communication system. The method comprises a step of acquiring cell identification information using the preamble received from a base station, a step of determining frequency resource allocation information using the cell identification information and information on the number of allocated subbands, and a step of transmitting a ranging signal using the sub-band indicated by the frequency resource allocation information.05-10-2012
20120113954METHOD AND APPARATUS FOR EFFICIENT BANDWIDTH UTILIZATION FOR SUBSCRIBER UNIT INITIALIZATION AND SYNCHRONIZATION IN A TIME-SYNCHRONIZED COMMUNICATION SYSTEM - A bandwidth efficient subscriber unit initialization and synchronization method and apparatus is described. The inventive subscriber unit initialization and synchronization method and apparatus uses a combination of an access burst format and a data transportation technique to efficiently use bandwidth when initializing and synchronizing subscriber units in a time-synchronized communication system. Advantageously, the present invention provides a mechanism for a base station to receive multiple access bursts from multiple subscriber units in a single contiguous time period. In the preferred embodiment of the present invention, bandwidth is efficiently utilized by searching for multiple initial access bursts from multiple mobile stations during a single time period known as a new access opportunity. The preferred embodiment of the present invention initializes and synchronizes subscriber units in a “contention-based” manner.05-10-2012
20100085934METHOD AND APPARATUS FOR TRANSMITTING SIGNAL AND A COMMUNICATION SYSTEM - A method, apparatus and system for transmitting signal, the method includes: using the weighting factor sequence, processing weighting repeating modulation for the basic cell block mapped by the data symbol block at the sending end, and obtaining a plurality of the repeating cell blocks corresponding to the said basic cell block; the sending end maps each repeating cell block to the appointed time-frequency position respectively, then sends the signals in the said time-frequency position; and the receiving end demodulates the plurality of data symbol blocks from the blocks, and incorporates the plurality of data symbol blocks; the said receiving end demodulates the incorporated data symbol blocks, and generates the received data. This scheme can be called for short as the block repeating spread diversity transmission technology, it is based on the information symbol in the time-frequency domain two-dimensional grid point. This scheme doesn't restrict the modulating signal generation manner at bottom, it can form a new multiple address/multiple path transmission scheme, and can be incorporated with the other key technologies in the existing mobile communication.04-08-2010
20120236819Method for Transmitting an Information Sequence - Methods and apparatus are disclosed for applying successive multi-rank beamforming strategies (e.g., successive precoding strategies) for the design of precoders over a set of parallel channels. Successive beamforming is applied to a narrow band channel model and is also applied for finer quantization of a single beamforming vector (e.g., recursive beamforming). A first embodiment provides the optimal approach with high complexity. An alternative embodiment provides successive beamforming for near optimal precoding selection with medium complexity. A low complexity method for precoder selection is also provided wherein a channel representative matrix for the set of parallel channels is determined and successive beamforming on the calculated channel representative is applied.09-20-2012
20130182679METHOD AND APPARATUS FOR INDICATING DEACTIVATION OF SEMI-PERSISTENT SCHEDULING - A method and apparatus for performing semi-persistent scheduling (SPS) deactivation in a wireless mobile communication system are disclosed. A base station (BS) transmits a downlink control channel to a user equipment (UE), and deactivates the SPS when a binary field indicating resource allocation information contained in the downlink control channel is entirely filled with ‘1’.07-18-2013
20130163557METHOD FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEMS - When a plurality of terminals share the same resources in a wireless communication system, and when control information such as acknowledgement/negative acknowledgement (ACK/NAK) information or scheduling information is transmitted, a method of efficiently performing code division multiplexing (CDM) is required to distinguish the plurality of terminals. In particular, it is necessary to develop a method by which a code sequence of CDM can be selected and used according to each cell condition. Provided is a method of forming a signal in a wireless communication system in which a plurality of terminals commonly share frequency and time resources. The method includes the operations of receiving condition information in a cell; selecting one of a plurality of time domain orthogonal sequences having different lengths, according to the condition information; and allocating the selected time domain orthogonal sequence to a control signal symbol block.06-27-2013
20100165945METHOD AND SYSTEM FOR IN-BAND WIRELESS BACKSTRETCH - Disclosed are a method and system for transmitting and receiving traffic, by a plurality of backhaul collector sites, to and from transceivers associated with sectors of a backhaul frequency reuse plan using a backhaul portion thereof. The method and system further transmit and receive traffic, at a backstretch super collector site of a backstretch cell, to and from alternate or a subset of backhaul collector sites of the plurality of backhaul collector sites surrounding the backstretch collector site.07-01-2010
20100142476Method for mapping downlink dedicated pilots to resource elements in extended cyclic prefix frame structure - A method for mapping downlink dedicated pilot frequencies of an extend cyclic prefix frame structure to physical resource blocks, applied in a long term evolution system, includes the following steps: the first downlink dedicated pilot frequency of each channel is mapped to the specific position of a physical resource block; other downlink dedicated pilot frequencies of the channel are mapping-processed according to the time domain interval, frequency domain interval and the preset regulation; the time domain interval is two or three OFDM symbols, the frequency domain interval is two sub-carriers of the same time domain. By defining the positions of pilot frequencies in the physical resource block, the public pilot frequency can obtain the information of all channels when a base station uses a beam pattern of more than four antennas. Making the channel information obtained by dedicated pilot frequencies contain the real channel information and the process-weight-value of a beam pattern, a UE does not need to obtain the transmission-weight-value of a beam pattern, such as to avoid the feedback cost of weight-values of a beam pattern.06-10-2010
20120320872Method and apparatus for transmitting uplink control signaling and bearing uplink demodulation reference signal - The disclosure provides a method for transmitting uplink control signaling, which includes: respectively performing, on the uplink control signaling, channel coding, scrambling, modulation, time-domain spreading and precoding transform; or respectively performing, on the uplink control signaling, channel coding, scrambling, modulation, precoding transform and time-domain spreading; and mapping the uplink control signaling to an Orthogonal Frequency Division Multiplexing (OFDM) symbol used for bearing the uplink control signaling; and transmitting the uplink control signaling that is borne in the OFDM symbol. The disclosure also provides a method for bearing a demodulation reference signal during transmission of uplink control signaling, which includes: bearing the uplink demodulation reference signal in k OFDM symbols in a sub-frame. The disclosure also discloses apparatuses for respectively implementing the methods above. The technical solutions of the disclosure effectively solve the problem that the uplink control signaling is transmitted using a structure of Discrete Fourier Transform-spread-OFDM (DFT-s-OFDM).12-20-2012
20130163555Apparatuses and Methods in Relation to Flexible Spectrum Usage for Proximity Communication - The present invention proposes an apparatus, including a communication module, configured to communicate with another apparatus in a first mode, which involves at least one network device in order to establish end-to-end communication between the apparatus and a communication counterpart, or in a second mode, which establishes direct end-to-end communication between the apparatus and a communication counterpart not involving a network device, wherein communication is based on physical resources that are allocated in time and frequency domain based on a resource grid, and a control module, configured to control the communication module to communicate in the first mode based on a first resource grid pattern or to communicate in the second mode based on a second resource grid pattern. Likewise, the present invention addresses a correspondingly adapted network entity, as well as respective methods and computer program products.06-27-2013
20110085515Method and apparatus for sequence distributing and sequence processing in communication system - A sequence distributing and sequence processing method and apparatus in a communication system are provided. The sequence distributing method includes the following steps of: generating sequence groups including a number of sequences, the sequences in the sequence groups are determined according to the sequence time frequency resource occupation manner which is supported by the system; distributing the sequence groups to cells. The method avoids the phenomenon that signaling transmission is needed to distribute the sequences to the cells for different time frequency resource occupation manner, and saves in so far as possible the wireless network transmission resource occupied during the process of distributing the sequences through distributing the sequence groups comprising a number of sequences to the cells.04-14-2011
20110299500MULTIPLEXING CONTROL AND DATA INFORMATION FROM A USER EQUIPMENT IN MIMO TRANSMISSION MODE - A method and apparatus for multiplexing Uplink Control Information (UCI) with data information in a Physical Uplink Shared CHannel (PUSCH) transmitted over multiple spatial layers where aspects of the UCI multiplexing include the determination of the number of coded UCI symbols in each spatial layer when the data information is conveyed using multiple Transport Blocks (TBs), the determination of the number of coded UCI symbols in each spatial layer when the PUSCH conveys a single TB retransmission for a Hybrid Automatic Repeat reQuest (HARQ) process while the initial TB transmission for the same HARQ process was in a PUSCH conveying multiple TBs, and the determination of the modulation scheme for the coded UCI symbols.12-08-2011
20110085513UPLINK RESOURCE ALLOCATION FOR LTE ADVANCED - Methods, systems, apparatus and computer program products are provided to receive downlink control information (DCI) in a downlink control channel, where the downlink control information configured to indicate an allocation of uplink resources with a clustered uplink resource allocation protocol or a contiguous uplink resource allocation protocol, to detect which of the clustered uplink resource allocation protocol and the contiguous uplink resource allocation protocol is indicated and to allocate the uplink resources based on the indicated uplink resource allocation protocol.04-14-2011
20100150100Unified synchronous ranging channel design and allocation in wireless OFDMA systems - A unified synchronous ranging channel is provided. The unified synchronous ranging channel has a ranging cyclic prefix length that is the same as a cyclic prefix length of a data channel. The unified synchronous ranging channel is used for one of initial ranging, handover ranging, and periodic ranging between a mobile station and a femto base station. In one embodiment, the synchronous ranging channel spans over a two-dimensional radio resource region having a first number of subcarriers along frequency domain, a second number of OFDM symbols along time domain, and a third number of time-domain repetition. At the transmit side, a ranging code sequence is generated by applying a fixed time-domain cyclic shift per OFDM symbol to a root sequence. At the receive side, the ranging code sequence is decoded by using a summation module, a likelihood-combining module, and a modified peak test module that normalizes a peak value.06-17-2010
20110286426CONTROL DATA TRANSMISSION OVER A DATA CHANNEL BY A CONTROLLING BASE STATION - A controlling base station sends, to a wireless communication device, control data related to communication between a communication base station and the wireless communication device. The control data is transmitted in accordance with a communication specification and is transmitted to allow reception by the wireless communication device of the control data within a data channel having a frequency and time allocated by the communication specification for the wireless communication device to receive data transmissions from the communication base station.11-24-2011
20090168718CONFIGURATION FOR CQI REPORTING IN LTE - A method and apparatus for receiving and processing channel quality index (CQI) reporting. A wireless transmit receive unit is configured to receive CQI configuration information and transmit a CQI report based on the CQI configuration information.07-02-2009
20120099559MASTER STATION IN COMMUNICATIONS SYSTEM AND ACCESS CONTROL METHOD - A communication band is divided into: a beacon period in which every master station transmits a beacon packet in competition with one another; a guaranteed-band period (e.g., a TDMA period or an FDMA period) in which only a specific permitted station is allowed access; and a CSMA period in which every station is allowed access in competition with one another. Plural master stations exchange information of a communication band used in the guaranteed-band period with each other, and based on the respective information, a communication band available to the master station's own communications system in the guaranteed-band period is calculated.04-26-2012
20090201877RANGING METHOD USING NEW RANGING STRUCTURE - A method for performing ranging in a broadband wireless access system including a user equipment and a base station and using multi-carrier is described. A method using a structure in which a length of a part occupied by a ranging sequence is extended in the time domain includes a method using a structure in which a preamble occupied by the ranging sequence is repeated three times or more, a method using a structure in which a length of a preamble occupied by the ranging sequence is extended in the time domain, and a method using a structure in which lengths of a cyclic prefix and/or a guard time in the time domain are designed in consideration of a delay spread of a channel and a trip delay. Even in a cell structure having an extended radius, the trip delay can accurately be estimated.08-13-2009
20090201876CONTROLLER, MOBILE STATION, MOBILE COMMUNICATIONS SYSTEM AND CONTROL METHOD - A disclosed control apparatus performs packet communications with a mobile station and divides a coverage area into plural sectors so as to control the communications. The control apparatus comprises a transmission allocation portion that selects at least two transmission sectors to perform transmission to the mobile station in accordance with reception quality imparted from the mobile station so as to perform a transmission allocation for the mobile station; and a transmission portion that uses an identical scramble code for sector identification so as to perform transmission to the mobile station.08-13-2009
20090279499Wireless resource allocating apparatus, on-vehicle apparatus, and wireless resource allocating system - A wireless resource allocating apparatus includes a ranging signal receiving unit that receives a signal indicating that an on-vehicle apparatus loaded on a vehicle is present within a predetermined area, an on-vehicle apparatus quantity calculating unit that calculates the number of on-vehicle apparatuses present within the area from the signal received by the ranging signal receiving unit, a wireless resource allocating unit that allocates wireless resources to be used for inter-vehicle communication among a plurality of on-vehicle apparatuses present within the area and non-inter-vehicle communication between the on-vehicle apparatuses and a communicating apparatus other than the on-vehicle apparatuses based on the number of on-vehicle apparatuses calculated by the on-vehicle apparatus quantity calculating unit, and an allocation instruction transmitting unit that instructs an on-vehicle apparatus present within the area to use the wireless resources allocated by the wireless resource allocating unit.11-12-2009
20100195614Method and Apparatus for Transport Block Signaling in a Wireless Communication System - A method and apparatus for generating a single statically defined downlink reference MCS table consisting of transport block sizes (TBSs) computed for 29 MCSs for each of j PRBs where j=1, . . . , N08-05-2010
20090245198Channelization procedure for implementing persistent ACK/NACK and scheduling request - In one exemplary embodiment, a method includes: configuring a common resource space having a plurality of time-frequency resources and code resources, where the common resource space includes a first portion for a first type of signaling and a second portion for a second type of signaling, where the first type of signaling includes at least one of persistent acknowledgement signaling and scheduling request signaling, where the second type of signaling includes dynamic acknowledgement signaling; and allocating, based on the configured common resource space, resources of the common resource space for the at least one of persistent acknowledgement signaling and scheduling request signaling.10-01-2009
20090296650COORDINATED LINEAR BEAMFORMING IN DOWNLINK MULTI-CELL WIRELESS NETWORKS - System and methods are disclosed for optimizing wireless communication for a plurality of mobile wireless devices. The system uses beamforming vectors or precoders having a structure optimal with respect to the weighted sum rate in a multi-cell orthogonal frequency division multiple access (OFDMA) downlink. A plurality of base stations communicate with the mobile devices and all base stations perform a distributed non-convex optimization exploiting the determined structure.12-03-2009
20100111030Frequency Hopping Scheme for OFDMA System - Available bandwidth is divided into multiple sub-channels, and respective sub-bands containing one or more of these sub-channels are allocated to one or more users. A first frequency allocation is determined, and mathematical operators are used to determine at least one further frequency allocation from the first frequency allocation. A frequency hopping sequence is then determined, including the first frequency allocation, and the or each further frequency allocation. A network node may perform the allocation method, and a user equipment may operate using the allocated bandwidth.05-06-2010
20090034468Time-Sharing of Sounding Resources - This invention is a method for time-sharing sounding resources. A first embodiment defines one common sounding period for all user equipment and all sounding resources. A second embodiment allows for different sounding periods so long as each individual sounding resource uses only one sounding period. A third embodiment offers the most flexibility in sharing of the sounding resources by permitting changes in time. The first option is a special case of the second option. The second option is a special case of the third option.02-05-2009
20090034467Allocation of periodically distributed frames of wireless communication - Methods of allocating a plurality of periodically distributed frames of communication between a first wireless transceiver and a second wireless transceiver are disclosed. One method includes detecting periodic data for transmission between the wireless base station and the wireless mobile unit. A transmission map that maps frequency and time slots is generated for transmission of the data packets. Allocation information is included within less than all of a plurality of transmission maps of the plurality of periodically distributed frames. The allocation information designates frequency and time slots in which data packets identified as a periodic data type are transmitted to the second wireless transceiver for the plurality of periodically distributed frames.02-05-2009
20090190548Data transmission in a mobile communication system apparatus, system and method - An apparatus, system, and method may include providing a plurality of data streams in respective subchannels and modulating a first data stream of the plurality of data streams at least partially with a different modulation constellation than a second data stream of the plurality of data streams. The method may also include transmitting the first and second data streams using a same radio resource to user terminals using different subchannels of the radio resource.07-30-2009
20080310363Method and Apparatus for Sharing a Group Resource in a Wireless SDMA System - A method and apparatus of signaling radio resource allocation in a wireless communication system includes establishing groups of mobile stations which monitor a shared group scheduling bitmap; transmitting a group scheduling bitmap to the mobile stations, wherein the group scheduling bitmap contains a mobile station presence bitmap and an SDMA bitmap, wherein the SDMA bitmap is used to divide the group members into two or more subgroups; and transmitting packets to the mobile stations or receiving packets from the mobile stations using the radio resource which is derived from the value indicated in the group scheduling bitmap.12-18-2008
20080310362Method and Apparatus for Assigning Resources in a Wireless System - A method and apparatus of signaling radio resource allocation in a wireless communication system includes the time-frequency resources into multiple regions; defining a channel tree within at least one region, wherein the channel tree has base nodes which are determined using the area of the region and the area of a base node; determining a channel identifier assignment for a mobile station, wherein the channel identifier corresponds to a collection of base nodes from a channel tree; transmitting an indication of the determined channel identifier to the mobile station; and transmitting a packet to a mobile station or receiving a packet from the mobile station using the physical time-frequency resources, which correspond to the channel identifier.12-18-2008
20100034165SEQUENCE GENERATION AND TRANSMISSION METHOD BASED ON TIME AND FREQUENCY DOMAIN TRANSMISSION UNIT - A method for generating/transmitting a transmission-unit symbol sequence is disclosed. In the case of transmission information, the information is modulated in time and frequency domains on the basis of a predetermined transmission unit (e.g., a transmission time interval TTI or slot), simultaneous transmission of the information is made, and then a transmission unit symbol is generated/transmitted. A transmission sequence is masked in each symbol contained in one transmission unit. Symbol-unit circular shift (cyclic shift) is applied to the masked result, so that transmission efficiency increases. A control signal transmission method for supporting a variety of formats and a signal transmission method based on a prime-length sequence are also provided.02-11-2010
20090196250METHOD AND SYSTEM FOR ALLOCATING CHANNEL MEASUREMENT RESOURCES IN WIRELESS BROADBAND ACCESS - A method for allocating resource of channel measurement in wireless broadband access includes the following steps. A subscriber station receives a channel measurement request which includes a channel to be measured and a measurement time from a base station, and performs a measurement on the channel to be measured within the measurement time. A system, a base station, and a subscriber station in wireless broadband access are also provided in the embodiments of the invention. The embodiments of the invention enable the subscriber station to acquire the available measurement resource while maintaining normal service and communication with the serving base station.08-06-2009
20090196249BASE STATION, USER DEVICE, AND METHOD USED IN MOBILE COMMUNICATION SYSTEM - A base station used in a mobile communication system employing a single carrier scheme for uplink transmission is disclosed. The base station includes a scheduler configured to allocate one or more uplink resource blocks to a user device according to uplink channel conditions of the user device; and a reporting unit configured to report scheduling information indicating the allocation result to the user device. An uplink control channel of the user device is mapped to a resource block in a transmission frame including multiple resource blocks according to a hopping pattern based on the scheduling information; and the uplink control channel is mapped to a resource block according to the same hopping pattern regardless of whether the uplink control channel is associated with a user data channel.08-06-2009
20100027502Sub-band dependent resource management - A system and method for facilitating resource management in OFDM systems is provided. The system permits different and flexible resource cell metric operations levels (e.g. uplink load management, admission control, congestion control, signal handoff control) for different sub-bands. For the uplink load management, there are multiple distinct load operation points (e.g. IoT, RoT) per sub-band group instead of the same operation level across the entire available band. The sub-band groups encompass the entire band. The facilitation system also comprises a variety of transmitting protocols, command increment variable stepsize methods and robust command response methods. The system thus provides more flexible reverse link resource management and more efficient utilization of the bandwidth.02-04-2010
20100027501RADIO COMMUNICATION DEVICE AND PILOT ARRANGEMENT METHOD - Provided is a radio communication device capable of reducing the number of pilots while maintaining a channel estimation accuracy. The radio communication device includes: a unicast pilot generation unit (02-04-2010
20100111031METHOD FOR TRANSMITTING CONTROL SIGNAL USING EFFICIENT MULTIPLEXING - A method of transmitting a control signal using efficient multiplexing is disclosed. The present invention includes the steps of multiplexing a plurality of 1-bit control signals within a prescribed time-frequency domain by code division multiple access (CDMA) and transmitting the multiplexed control signals, wherein a plurality of the 1-hit control signals include a plurality of the 1-bit control signals for a specific transmitting side. Accordingly, reliability on 1-bit control signal transmission can be enhanced.05-06-2010
20090147748TRANSMISSION APPARATUS, RECEPTION APPARATUS, MOBILE COMMUNICATIONS SYSTEM AND TRANSMISSION CONTROL METHOD - A disclosed transmission apparatus comprises a switching portion that switches radio access methods; a frequency domain signal generation portion that allocates a radio resource to a spread chip sequence on which one of a fast Fourier transformation and a series/parallel conversion is performed in accordance with the switched radio accessed method, so as to generate a signal in a frequency domain; and a transmission signal generation portion that performs a fast inverse Fourier transformation on the signal in the frequency domain so as to generate a transmission signal.06-11-2009
20090180436RANDOM ACCESS CHANNEL FREQUENCY DIVERSITY - The present invention provides a method of transmitting on a random access channel in a radio communication system. In a single time slot there are enabled at least two different radio frequencies for transmission on the random access channel. Only one frequency is selected for transmission in the same time slot. A random access preamble is then transmitted on the selected random access channel in the time slot.07-16-2009
20110170515RESOURCE ALLOCATION APPARATUS IN IP UPLINK - Provided is a method that may allocate uplink radio resources to a terminal, and may receive data from the terminal using the radio resources. The uplink radio resources may be allocated as contention-based radio resources in a radio network, such as a cellular system, a radio local access network (LAN), and the like, and thus, a plurality of terminals may effectively transmit data using minimum radio resources.07-14-2011
20090310558Wireless Communication System, Terminal Apparatus, And Communication Method - A wireless communication system includes a first base station apparatus that includes a wireless unit, which performs transmission or reception using a first frequency at a first time slot and performs the transmission or the reception using both the first frequency and a second frequency at a second time slot; and a second base station apparatus that includes a wireless unit, which performs the transmission or the reception using the second frequency at the first time slot and performs the transmission or the reception using both the first frequency and the second frequency at the second time slot.12-17-2009
20100118829METHOD, DATA STRUCTURE AND COMPUTER SYSTEM FOR PACKING A WORLWIDE INTEROPERABILITY FOR MICROWAVE ACCESS (WIMAX) FRAME - A method of packing a Worldwide Interoperability for Microwave Access (WiMAX) frame, characterised in that the method comprises the steps of: creating a matrix of substantially the same number of rows and columns as the WiMAX frame; mapping a first control message to a position in a first corner of the matrix; mapping a first data message to a position in a second corner of the matrix, wherein the second corner is opposite in a predetermined direction to the first corner; mapping a plurality of further control messages to the matrix in a first direction moving from the first corner towards the centre of the matrix; and mapping a plurality of further data messages to the matrix in a second direction that is different from the first direction, from the second corner of the matrix towards the centre of the matrix; until one or more of the further data messages meets one or more of the further control messages; copying the control messages from the matrix to a first area of the WiMAX frame; arranging the control messages in the WiMAX frame so that the first control message is located at the start of the frame; and copying the data messages from the matrix to a second area of the WiMAX frame, so that the first data message is located directly after the control messages.05-13-2010
20100118828Method of transmitting scheduling request in a wireless communication system - A method of transmitting a scheduling request which is used to request a radio resource for uplink transmission includes configuring an uplink control channel for transmission of a scheduling request in a subframe, the subframe comprising two consecutive slots, a slot comprising a plurality of single carrier-frequency division multiple access (SC-FDMA) symbols, the scheduling request being carried by presence or absence of transmission of the uplink control channel, and transmitting the scheduling request on the uplink control channel.05-13-2010
20100118825RADIO BASE STATION USED IN MOBILE COMMUNICATION SYSTEM - A disclosed radio base station is used in a mobile communication system employing a single carrier scheme for uplink and includes a scheduler configured to allocate radio resources such that a first control channel accompanying an uplink data channel is transmitted using the same frequency band allocated to the uplink data channel and a second control channel, which is to be transmitted regardless of presence or absence of the uplink data channel, is transmitted using a dedicated frequency band reserved for the second control channel if no frequency band is allocated to the uplink data channel; and a reporting unit configured to report scheduling information indicating the allocation results to a user device. The scheduler is configured not to allocate the radio resources to the uplink data channel of the user device in a unit transmission period reserved for transmission of the second control channel of the user device.05-13-2010
20100080189METHOD AND APPARATUS FOR PLUG-AND-PLAY VENUE-CAST CO-CHANNEL WITH WIDE-AREA NETWORK - A system, method, and apparatus for providing venue-cast service in a wireless access network are disclosed. A local transmitter can request reservation of air link resources on the wireless access network for a venue-cast transmission. The local transmitter can receive a forward link signal with a timing reference for data transmitted on the wireless access network such as, for example, the forward link signal in an EV-DO network or a FLO-based media distribution system. Based on the timing reference, the local transmitter can transmit venue-cast information in a same frequency band as the forward link signal utilizing the reserved air link resources. Optionally, the venue-cast system can include a collocated network repeater and the local transmitter can synchronize its timing and transmit power to the forward link signal from the repeater.04-01-2010
20120033637Method and Apparatus for Associating a Packet with an H-ARQ Channel Identifier - Method and apparatus are provided for transmitting control information to a mobile station. A persistent assignment is transmitted to a mobile station, wherein the persistent assignment includes a plurality of hybrid automatic repeat request (H-ARQ) channel identifiers (ACIDs). A subsequent assignment including an ACID derived from the plurality of ACIDs is transmitted to the mobile station. In another aspect of the invention, a mobile station receives from a base station a persistent assignment including a plurality of ACIDs, and a subsequent assignment including an ACID derived from the plurality of ACIDs.02-09-2012
20090207803BASE STATION AND METHOD IN MOBILE COMMUNICATIONS SYSTEM - A disclosed base station in a mobile communications system which uses a single-carrier technique for uplink includes a classifying unit which classifies, for each of multiple user apparatuses according to a path loss between the respective user apparatus and the base station, the multiple user apparatuses into two or more groups; and a scheduler which plans allocating of uplink resources to the user apparatuses. Uplink signals of each user apparatus that have multiple frequency components lined up in equal frequency intervals are multiplexed using a distributed frequency division multiplexing technique such that they are made mutually orthogonal on a frequency axis, the scheduler plans the resource allocating such that the user apparatuses belonging to different groups utilize different group bands or different time slots, and the group bands are specified by dividing a system band into groups.08-20-2009
20110268081PRE-ALLOCATED RANDOM ACCESS IDENTIFIERS - Systems and methods of pre-allocating identifiers to wireless devices for use in requesting resources over a random access channel are described. A wireless communication system includes a random access channel over which wireless devices can anonymously send requests for resources. The base stations receiving and processing the anonymous requests reduces the probability of random access channel collisions and conserves the resources needed to support the anonymous requests by pre-allocating one or more codes to select wireless devices. The wireless devices having the pre-allocated codes can transmit a particular code over the random access channel as a request for resources that uniquely identifies the requester.11-03-2011
20110026483PERMUTATION ZONE FOR COORDINATED MULTI-POINT SYSTEMS - The present subject matter provides a method for implementation in a wireless communication system that includes a plurality of base stations for providing wireless connectivity to at least a first mobile unit. A first signal processed using a first permutation mapping is communicated between the first mobile unit and a first base station. A second signal processed using the first permutation mapping is communicated between the first mobile unit and a second base station different than the first base station. The first and second signals are processed based on the first permutation mapping to extract data therefrom.02-03-2011
20110268080METHOD AND APPARATUS FOR CONTROL AND DATA MULTIPLEXING IN WIRELESS COMMUNICATION - A method of wireless communication includes determining a number of symbols for uplink control information (UCI) on each of a plurality of layers, multiplexing symbols for the UCI with data on multiple layers such that the symbols are time aligned across the layers, and sending the multiplexed symbols on the multiple layers on uplink. In some designs, the number of symbols for the UCI may be determined based on a spectral resource parameter.11-03-2011
20120106503RADIO COMMUNICATION DEVICE AND RESPONSE SIGNAL DIFFUSION METHOD - Provided is a radio communication device which can suppress inter-code interference between an ACK/NACK signal and a CQI signal which are code-multiplexed. A diffusion unit (05-03-2012
20120106501RADIO BASE STATION APPARATUS, MOBILE STATION APPARATUS AND RADIO COMMUNICATION METHOD - To provide a radio base station apparatus and radio communication method capable of performing radio communications using downlink reference signal structures suitable for antenna virtualization, a radio base station apparatus (05-03-2012
20090262700FREQUENCY DOMAIN DIRECT SEQUENCE SPREAD SPECTRUM WITH FLEXIBLE TIME FREQUENCY CODE - A spread spectrum radio frequency communication system includes a Forward Error Correction (FEC) algorithm to encode digital data to provide a plurality of symbol groups, the FEC algorithm using a Reed Solomon FEC code, an interleaving algorithm to map each one of the plurality of symbol groups into a corresponding one of a plurality of coherent sub-bands, and a Walsh encoder to encode each one of the plurality of symbol groups.10-22-2009
20090262699RESOURCE RESERVATION FOR USERS IN A MOBILE COMMUNICATION SYSTEM - The invention relates to a method and scheduling apparatus for reserving radio resources in radio resource block units in a mobile communication system for a plurality of users. Further, another aspect of the invention is the indication of a radio resource reservation in radio resource block units in a mobile communication system to one of a plurality of mobile terminals. To provide a new mechanism allowing an efficient utilization of radio resources the invention proposes a resource reservation mechanism that reserves radio resources for a plurality of users in resource block units. Thereby, individual resource blocks are reserved for the individual users for a reservation period that comprises a plurality of time slots (or sub-frames). Further, the resource block reservations for the users overlap at least partially among the users, i.e. individual ones of the resource blocks are reserved for plural users.10-22-2009
20090274112Initial Access Channel for Scalable Wireless Mobile Communication Networks - Physical layer structures and access schemes for use in such networks are described and in particular initial access channel (IACH) structures are proposed. A spectrum efficient downlink (DL) IACH design supports different types of User Equipment (UE) capabilities and different system bandwidths. An IACH includes the synchronization channel (SCH) and broadcast-control channel (BCH). A non-uniform SCH for all system bandwidths is provided, as well as scalable bandwidth BCH depending on system bandwidth. An initial access procedure is provided, as well as an access procedure.11-05-2009
20090274113Channel Allocation for Burst Transmission to a Diversity of Satellites - A method for allocating transmission channels to devices configured to communicate short data packets to a diversity of non geostationary satellites is disclosed hereby. The method suggests a dynamic cellular partitioning of the earth surface, based on the smallest intersections of overlapping satellite service areas (“footprints”), defined as mega-cells, and reusing channels in different mega-cells. In addition, a transmission cycle is defined and divided to time slots, synchronized at each device by GPS timing signals, and mega-cells served by more satellites are allocated with fewer time slots, in order to increase the chance of transmitters placed in mega-cells served by fewer satellites to be detected. Further, each mega-cell is divided to cells, and different channels and time slots are allocated to each cell, from those allocated to the corresponding mega-cell. Consequently, collision of transmissions from different mega-cells is reduced, and collision of transmissions from different cells in a mega-cell is avoided.11-05-2009
20090279500METHODS OF SENDING CONTROL INFORMATION FOR USERS SHARING THE SAME RESOURCE - Certain aspects of the present disclosure relate to a method for sending control information to multiple user terminals that share the same resources in a Spatial Division Multiple Access (SDMA) wireless system. The control information can be transmitted from an access point over a physical downlink control channel (PDCCH) that is common for a plurality of user terminals. The overall PDCCH overhead can thus be reduced due to a smaller number of required PDCCH in the SDMA wireless system.11-12-2009
20090296649BASE STATION AND WIRELESS COMMUNICATION METHOD - A base station is provided. The base station conducts wireless communication with one or more terminal devices using an OFDMA system, and has: a channel assigning unit that assigns PRU an extra channel used for data communication and an anchor channel including a map indicating the position of PRU to which the extra channel is assigned, wherein the channel assigning unit assigns the anchor channel to PRU of a predetermined frequency domain and assigns the extra channel to PRU of a domain other than the predetermined frequency domain.12-03-2009
20090296648OPTIMAL USER PAIRING FOR MULTIUSER MIMO - A method includes operating a receiver connected with n12-03-2009
20120294274PRE-ALLOCATED RANDOM ACCESS IDENTIFIERS - Systems and methods of pre-allocating identifiers to wireless devices for use in requesting resources over a random access channel are described. A wireless communication system includes a random access channel over which wireless devices can anonymously send requests for resources. The base stations receiving and processing the anonymous requests reduces the probability of random access channel collisions and conserves the resources needed to support the anonymous requests by pre-allocating one or more codes to select wireless devices. The wireless devices having the pre-allocated codes can transmit a particular code over the random access channel as a request for resources that uniquely identifies the requester.11-22-2012
20110200003METHODS AND APPARATUS FOR MAPPING MODULATION SYMBOLS TO RESOURCES IN OFDM SYSTEMS - A method for transmission, by dividing a transmission resource in a time domain subframe into a plurality of equal duration resource elements in a time and frequency domain, segregating the plurality of resource elements into a plurality of resource regions, modulating information to be transmitted to generate a sequence of modulation symbols at a transmitter, mapping the sequence of modulation symbols into the plurality of resource elements in the plurality of resource regions, and transmitting the modulation symbols via a plurality of antennas using the respective corresponding resource elements to a receiver. The mapping of the modulation symbols in at least one resource region is independent of a certain control channel information that is carried in said time domain subframe, and the mapping of the modulation symbols in at least another resource region is dependent upon said certain control channel information that is carried in said subframe. The information to be transmitted may be encoded to generate a plurality of code blocks, with roughly equal number of resource elements assigned to each of the plurality of code blocks in at least one resource region. Alternatively, the time domain subframe may contain only one resource region.08-18-2011
20100103902METHOD OF TRANSMITTING SOUNDING REFERENCE SIGNAL - A method of transmitting a sounding reference signal (SRS) includes receiving SRS operation information including a sounding indicator, the sounding indicator indicating whether SRS transmission takes place at a subframe; generating the SRS according to the SRS operation information, and if the sounding indicator indicates occurrence of SRS transmission, transmitting the SRS at the subframe. Multiplexing can be achieved without collision between data and a sounding reference signal and single carrier characteristics required in uplink transmission can be preserved.04-29-2010
20100103900BEAMFORMING METHOD AND DEVICE - The present invention relates to a beamforming device in an orthogonal frequency division multiplexing access system, and a method thereof. In the method, a switched beamforming algorithm is applied to perform downlink beamforming, and an adaptive beamforming algorithm is applied to perform uplink receiving beamforming. In addition, a half wavelength array antenna is used to simultaneously allocate the same resource to two terminals separately positioned in two different spaces, so as to support spatial division multiple access (SDMA). In this case, since a base station uses channel status information at transmitter (CSIT) for transmitting beamforming and receiving beamforming, the SDMA may be supported without obtaining additional channel status information at receiver (CSIR) when realizing the uplink receiving beamforming.04-29-2010
20100220683METHODS AND SYSTEMS FOR RESOURCE ALLOCATION - Various methods and systems are provided for allocating time-frequency resources for downlink (DL) and uplink (UL) communications between base stations and mobile stations. Different forms of resource allocation messages including combinations of bitmaps and bitfields provide additional information about the resources and/or how they are assigned. In some implementations the resource allocation messages enable reduced overhead, which may ultimately improve transmission rates and/or the quality of transmissions.09-02-2010
20100220682Method for Optimizing Performance in Multi-Cell OFDMA Networks - A method optimizes a performance of a multi-cell orthogonal frequency-division multiple access (OFDMA) network that includes a set of base stations (BSs) located in a cell, and each BS transmits data on downlink channels to a set of mobile stations (MSs) in the cell. Each BS acquires channel state information (CSI) and inter-cell interference information (ICI) for each downlink channel to each MS in the cell. Each BS selects a power level and a modulation coding scheme level (MCS) for transmitting the data to each MS on the downlink channels based on the CSI and ICI, such that a bit rate is maximized and the ICI is minimized. Then, time and frequency resource are allocated for transmitting the data on the downlink channels to the set of MSs, such that the allocated resources are minimized to optimize the performance of the network.09-02-2010
20100220686METHOD AND APPARATUS FOR COGNITIVE RADIO POLICY CHANGE - A method of operation of a cognitive radio in a hierarchical group of cognitive radios, the hierarchy of cognitive radios including at least one master cognitive radio that has a higher position in the hierarchy than another of the cognitive radios in the group, consistent with the present invention, involves establishing a first operational policy for the group of cognitive radios; determining that the operational policy is unsuitable for use by at least one member of the group; and the master cognitive radio dictating a change in the operational policy used by the group to a second operational policy for use by the group.09-02-2010
20110206000METHOD FOR RANDOM ACCESS TO UPLINK IN MULTI-CARRIER AGGREGATION ENVIRONMENT - The present invention relates to an access method for solving ambiguity between an initial access mobile station and a base station, wherein the ambiguity occurs in a carrier aggregation environment. When a base station transmits a downlink message including different downlink ID information through plural downlink carriers, a base station obtains the corresponding downlink ID information through a downlink carrier used by the mobile station. The mobile station transmits an uplink message using the obtained downlink ID information, and the base station extracts the downlink ID information from the uplink message in order to confirm which downlink carrier the mobile station uses.08-25-2011
20110205998Scheduling of Isochronous Traffic in Time and Frequency To Reduce Contention - Techniques are provided to reduce contention (interference) between bursts associated with multiple isochronous traffic flows. Generally, the techniques involve, at a plurality of wireless access point devices and/or a plurality of wireless client devices in a wireless network, initiating bursts of wireless transmissions carrying isochronous traffic from wireless access point devices to their associated client devices and/or from wireless client devices to their respective wireless access point devices at start times that are scheduled so as to reduce a likelihood of interference between multiple bursts of wireless transmissions for different isochronous traffic flows.08-25-2011
20100061334WIRELESS LOCAL AREA NETWORK - A wireless local area network comprising an access point and a plurality of remote stations arranged to communicate using Orthogonal Frequency Division Multiplex (OFDM). The system can operate in a first access mode wherein access to the access point is in accordance with a Carrier Sense Multiple Access (CSMA) scheme and in a temporary second access mode wherein access to the access point is in accordance with a Time Division Multiple Access (TDMA) scheme. A resource allocation of resource blocks when in the TDMA mode is furthermore such that resource blocks may be allocated to a plurality of remote stations which have overlapping time intervals and disjoint sets of OFDM subcarriers thereby allowing simultaneous communication for the plurality of remote stations within the overlapping time interval. The access operation is controlled by a single message transmitted from the access point. The invention may in particular be suitable for IEEE 802.11 systems.03-11-2010
20100061333EFFICIENT AND CONSISTENT WIRELESS DOWNLINK CHANNEL CONFIGURATION - A configuration for downlink signals in a wireless communication system, methods of configuring the downlink signals, apparatus for generating the downlink signals, and apparatus for receiving and processing the downlink signals are described herein. Downlink signals in a wireless communication system are reconfigured in series of frames, with each frame carrying a preamble that provides fast cell search and system acquisition. In particular, the preamble includes a primary preamble and a secondary preamble, where the primary preamble is common to all sectors in a base station and all base stations in a system and the secondary preamble is effectively unique to each base station, and may be further distinguished based on a sector basis. In addition, pilot signals are aligned with base stations to occur at the same time within a frame and the PN sequence values of the pilot signals are based on a cell identification an antenna identification, thereby enabling prediction of pilots transmitted by interferers or neighboring base stations from acquisition of secondary preambles. Also, the pilot bits are selectively assigned from a center of an operating band outward. Due to the pilot placement and pilot modulation, the scheme enables interference mitigation and channel estimation without knowing the frequency bandwidth, which is especially advantageous in broadcast channel systems.03-11-2010
20100128693METHOD OF RESOLVING OVERLAPS IN DATA TRANSMISSION AND USER EQUIPMENT THEREFOR - A user equipment and corresponding method of transmitting symbol by the user equipment in a wireless communication. The user equipment transmits a plurality of symbols to a base station, each symbol including a cyclic prefix and a data part. The method includes: receiving a timing adjustment command from the base station, the timing adjustment command advancing a transmission timing of symbol after a predetermined time; and transmitting a timing adjusted symbol to the base station. A length of the timing adjusted symbol is varied so that the timing adjusted symbol does not include an overlapping part with a previous symbol.05-27-2010
20090279501WIRELESS STATION AND FRAME CONSTRUCTING METHOD AND FRAME READING METHOD THEREOF - Wireless stations and methods thereof are provided. Allocations in a frame are considered to have a predetermined transmission sequence. MAP in the frame arranges zone allocation IEs of the allocations by following the predetermined transmission sequence so that a station receive the frame can know the predetermined transmission sequence. By having the predetermined transmission sequence, zone allocation IE of each of the allocations in the frame can be described by only two parameters: number of time units and number of frequency bands.11-12-2009
20110200004WIRELESS COMMUNICATION SYSTEM, MOBILE STATION DEVICE, AND BASE STATION DEVICE - A base station device includes: a control information generating section which generates control information specific to mobile station devices; a control information count indicator generating section which generates a control information count indicator indicating the number of pieces of generated control information of each mobile station device; and a transmitting section which transmits the control information count indicator and the control information. The mobile station device includes: a receiving section which receives a control information count indicator and control information transmitted from the base station device within a mobile station-specific search space selected based on a mobile station ID of the mobile station device; a control information count indicator detecting section which detects the control information indicator; and a control channel decoding section which decodes the control channel in response to the number of pieces of detected control information.08-18-2011
20110222507METHOD AND APPARATUS OF RESERVING RESOURCE IN WIRELESS COMMUNICATION SYSTEM - A method for resource reservation in a wireless communication system is provided. A plurality of physical resource units (PRUs) is provided and a reserved region is reserved. The reserved region is greater than or equal to a frequency band size of a subband which is a unit of contiguous PRUs in a frequency domain among the plurality of PRUs.09-15-2011
20110222505METHOD AND SYSTEM FOR MULTI-CARRIER PACKET COMMUNICATION WITH REDUCED OVERHEAD - A method and system for minimizing the control overhead in a multi-carrier wireless communication network that utilizes a time-frequency resource is disclosed. In some embodiments, one or more zones in the time-frequency resource are designated for particular applications, such as a zone dedicated for voice-over-IP (VoIP) applications. By grouping applications of a similar type together within a zone, a reduction in the number of bits necessary for mapping a packet stream to a portion of the time-frequency resource can be achieved. In some embodiments, modular coding schemes associated with the packet streams may be selected that further reduce the amount of necessary control information. In some embodiments, packets may be classified for transmission in accordance with application type, QoS parameters, and other properties. In some embodiments, improved control messages may be constructed to facilitate the control process and minimize associated overhead.09-15-2011
20090067382METHODS AND APPARATUS FOR IMPROVED UTILIZATION OF AIR LINK RESOURCES IN A WIRELESS COMMUNICATIONS SYSTEM INCLUDING A MULTI-ANTENNA ELEMENT BASE STATION - Methods and apparatus are described for improved utilization of air link resources. A base station includes at least one of a plurality of receive antenna elements and a plurality of transmit antenna elements for communicating with a wireless terminal. The base station generates channel estimation vectors corresponding to wireless terminals using the base station, where a generated channel estimation vector includes different elements corresponding to different base station antenna elements. The base station determines a level of orthogonality between pairs of channel estimation vectors corresponding to different wireless terminals. At least some of the segments to be assigned by the base station are substantially overlapping, e.g., the segments overlap fully or to a high degree. Wireless terminal pairs which have substantially orthogonal channel estimation vectors are matched and assigned to substantially overlapping segments, and the power level associated with the segments is controlled to be substantially the same.03-12-2009
20080273494METHOD AND APPARATUS FOR CLOSED LOOP TRANSMISSION - In a wireless communication system, a method and apparatus for closed loop transmission is disclosed. In accordance with the preferred embodiment of the present invention, a time frequency portion of an uplink frame is dynamically reserved as a sounding zone for uplink channel sounding. A first message is transmitted to a first subscriber station in a downlink frame assigning a time-frequency resource within the sounding zone, and a sounding waveform. Furthermore, a signal is received from the subscriber station within the assigned time-frequency resource, a partial channel response is determined from the received sounding signal, and the subsequent transmission to the subscriber station is tailored based on the at least partial channel response.11-06-2008
20080273493Load Balancing for an Air Interface Protocol Architecture with a Plurality of Heterogenous Physical Layer Modes - A system and method for dynamic traffic load balancing with a multiple physical layer modes of an air interface protocol architecture, the protocol architecture residing in a base station and/or an access network that includes a base station and access gateway that include distributed and centralized components of the air interface protocol architecture. The traffic load balancing supports various multiplexing scenarios for scheduling communication data under time division multiple access and frequency division multiple access techniques for use in the multi-carrier wireless network.11-06-2008
20080279147Spectrum auction and sharing on wireless clients - Methods and apparatus to enable spectrum auctioning, allowing a user to gain access to otherwise unavailable spectrum is disclosed. Spectrum providers may have the exclusive rights to the spectrum, but these providers can allow other users to access the spectrum in certain situations, for example, limited time use without restrictions, or use based on interference constraints. Software Defined Radio (SDR) may be employed to allow a wireless user to bid for spectrum usage when a wireless network is otherwise unavailable to them.11-13-2008
20110007704METHOD AND SYSTEM FOR USING SIGN BASED SYNCHRONIZATION SEQUENCES IN A CORRELATION PROCESS TO REDUCE CORRELATION COMPLEXITY IN AN OFDM SYSTEM - A mobile device receives a signal, from a base station, comprising a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). The received PSS and SSS are used to acquire cell-specific parameters so as to ensure communicates between the mobile device and the base station. The mobile device correlates the received signal in time domain using signs of each of a plurality of correlation reference sequences (reference PSSs). The mobile device generates sign based correlation reference PSSs using signs of the corresponding reference PSSs, which are generated based on a variety of Zadoff-Chu sequences. The received PSS is detected based on the correlation. No multiplication operations are used in the correlation process. Symbol timing is identified according to the detected PSS. The mobile device uses the identified symbol timing to baseband process the received signal. The received signal is an OFDM signal received over a 3GPP LTE/E-UTRA air interface.01-13-2011
20080267126Random Access Channel Hopping for Frequency Division Multiplexing Access Systems - A method of coordinating resources for repetition of random access bursts performed by a mobile terminal, the method comprising: determining groups of access slots based on parameters from a network, wherein each access slot is defined by any combination of frequency, time and code, and the access slots are organized according to a frequency pattern; transmitting an access burst on an access slot from a chosen group of access slots; and re-transmitting the access burst on the next access slot from the chosen group of access slots.10-30-2008
20080240034Methods for frequency-selective persistent scheduling - Methods for allocating wireless resources are provided. In one method, time domain resources are persistently allocated to a user for a data transmission during a transmission time interval, and frequency domain resources are dynamically allocated to the user for the data transmission during the transmission time interval. Methods provide flexibility for overbooking resources for any TTI to obtain statistical multiplexing gains.10-02-2008
20090129332METHODS AND APPARATUS FOR PROVIDING AN EFFICIENT FRAME STRUCTURE FOR WIRELESS COMMUNICATION SYSTEMS - Providing for an efficient frame structure for wireless communication is disclosed, which may include frequency division multiplexing (FDM) first and second air interfaces in a downlink subframe of a frame, and may also include time division multiplexing (TDM) the first and second air interfaces in an uplink subframe of the frame.05-21-2009
20110205999METHOD AND APPARATUS FOR MULTIPLEXING FREQUENCY HOPPING IN A COMMUNICATION SYSTEM - A method and apparatus for multiplexing frequency hopping in a wireless communication system using Orthogonal Frequency Division Multiple Access (OFDMA) is provided. The frequency hopping multiplexing method and apparatus efficiently indicates time division multiplexing for global hopping and local hopping by indicating and using the number and positions of slots for global hopping and local hopping to time-division-multiplex global hopping and local hopping in a reverse link, depending on information the number of Distributed Resource CHannels (DRCHs), provided from a transmitting side over a Forward link Secondary Broadcast Control CHannel (F-SBCCH), which is one of the forward common channels.08-25-2011
20090180435TDD OPERATION IN WIRELESS COMMUNICATION SYSTEMS - A method provides a wireless frame protocol. The method includes communicating a transmission interval that facilitates switching between a downlink portion and an uplink portion of a wireless communications channel. The method employs one or more guard periods during the transmission interval to mitigate overlap of transmitting frequencies between the downlink and uplink portions of the wireless communications channel.07-16-2009
20090129333PREAMBLE DESIGN FOR A WIRELESS SIGNAL - Providing for management of wireless communications in a heterogeneous wireless access point (AP) environment is described herein. By way of example, system data of an over-the-air message can be configured to include information identifying a distinct type of transmitting base station. In some aspects, the information can include an access type of the base station and/or a sector ID for distinguishing the base station among large numbers of other base stations. According to other aspects, system data transmitted on the wireless signal can include wireless channel resources designated for a particular type of base station, or blanked by the transmitting base station, to facilitate interference reduction on such resources. By employing aspects of wireless communication management disclosed herein, efficient and reliable communication can be affected in large heterogeneous AP networks.05-21-2009
20090129331OPPORTUNISTIC UPLINK SCHEDULING - Systems and methodologies are described that facilitate scheduling uplink transmissions. For instance, a time sharing scheme can be utilized such that differing mobile devices can be scheduled to transmit during differing time slots; however, it is also contemplated that a static scheme can be employed. Pursuant to an illustration, an interference budget can be combined with a time varying weighting factor associated with a base station; the weighting factor can be predefined and/or adaptively adjusted (e.g., based upon a load balancing mechanism). Moreover, the weighted interference budget can be leveraged for selecting mobile devices for uplink transmission (e.g., based at least in part upon path loss ratios of the mobile devices). Further, disparate interference budgets can be utilized by differing channels of a sector at a particular time. Also, for example, a base station can assign a loading factor to be utilized by wireless terminal(s) for generating channel quality report(s).05-21-2009
20100260138Signaling For Multi-Dimension Wireless Resource Allocation - The present disclosure includes systems and techniques relating to wireless local area network devices. Systems and techniques include determining wireless resource allocations in a time domain, a spatial wireless channel domain, and a frequency domain to coordinate communications with wireless communication devices, generating a control frame that directs wireless communications based on at least a portion of the wireless resource allocations, and transmitting the control frame to the wireless communication devices. Determining wireless resource allocations can include determining frequency allocations in the time domain.10-14-2010
20090185534Method and Apparatus for Transmitting a Packet Header - A system and method for transmitting a reduced header is presented. A preferred embodiment comprises a base station defining a normal header and a reduced header, wherein the reduced header has a smaller number of bytes than the normal header. The base station then concatenates the reduced header with smaller sized payloads and concatenates the normal header with larger sized payloads.07-23-2009
20090010221METHOD OF MULTIPLE-INPUT-MULTIPLE-OUTPUT WIRELESS COMMUNICATION - Embodiments of the present invention provide a method for selectively modulating a data frame of a signal using either a frequency-multiplexing modulation method or a spatial-multiplexing modulation method based on a predetermined criterion.01-08-2009
20110222504PREAMBLES IN OFDMA SYSTEM - The present invention provides a preamble that is inserted into an OFDMA frame and has a common sequence for all the base stations participating in a transmission. The subscriber station performs fine synchronization using the common sequence on the common preamble, and the resulting peaks will provide the locations of candidate base stations. The base station specific search is then performed in the vicinities of those peaks by using base station specific pseudo-noise sequences. With this two stage cell search, the searching window is drastically reduced. The preamble is matched to known values by a respective receiver to decode the signals and permit multiple signals to be transferred from the transmitter to the receiver. The preamble may comprise two parts, Preamble-I and Preamble-2, which may be used in different systems, including multioutput, multi-input (MIMO) systems.09-15-2011
20130121304ACKNOWLEDGEMENT SIGNALING IN WIRELESS COMMUNICATION NETWORK - A wireless communication device is disclosed. The device includes a transceiver coupled to a processor configured to determine an antenna port associated with a received control message scheduling a transport block, to determine an acknowledgement resource based on the antenna port, and to cause the transceiver to transmit an acknowledgement on the acknowledgement resource, wherein the acknowledgement indicates receipt or non-receipt of the transport block.05-16-2013
20130121305REFERENCE SIGNAL MULTIPLEXING AND RESOURCE ALLOCATION - A reference signal of a user equipment to which a resource (LB#05-16-2013
20090097447METHOD AND APPARATUS FOR ALLOCATING RESOURCES OF A CONTROL CHANNEL IN A MOBILE COMMUNICATION SYSTEM USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING - A method is provided for allocating resources of a control channel in a mobile communication system using Orthogonal Frequency Division Multiplexing (OFDM). The method includes, when a time index and a frequency index of available Resource Elements (REs) are defined as l and k, respectively, dividing the available REs in a two-dimensional structure of (k, l); and time-first-allocating each RE to a plurality of RE groups while increasing the time index l for each frequency index k from an initial value up to a predetermined range.04-16-2009
20110142003Precoding for Multiple Transmission Streams in Multiple Antenna Systems - Precoding for multiple transmission streams in multiple antenna systems. Embodiments herein disclose a general method that transmits signal from multiple antennas using a one/two dimensional precoder followed by STBC/SFBC or SM encoder. This precoder is fixed in a given resource block (RB) or slot, which is composed of P subcarriers and Q OFDM symbols (where the values for P and Q are greater than or 5 equal to 1). The precoder in each resource block may take same or different values, which span the two dimensional time-frequency grid. The precoder is chosen as a function of either logical frequency index or physical frequency index of the RB.06-16-2011
20110142002METHOD OF RESOURCE ALLOCATION IN A COMMUNICATION SYSTEM - Resources are allocated in a communication system by setting specific time and frequency chunks within a band to provide localized and distributed resources for each of localised and distributed users. The signalling of resource allocation for each user is in the chunk at the same frequency range as the frequency range of the allocated resource, or a subset of the frequency range of the allocated resource.06-16-2011
20130215867SYSTEM AND METHOD FOR MANAGING TRAFFIC IN A MOBILE COMMUNICATION NETWORK - The invention relates to a system and method for managing traffic in a mobile communication network. The system of the invention comprises at least two base stations comprising their respective time slots synchronised and being configured to provide the same radio frequency channel, said radio frequency channel comprising: at least a first time slot for transmitting a first logical Broadcast Control Channel being associated to the first base station, at least a second time slot for transmitting a second logical Broadcast Control Channel being associated to the second base station and a plurality of shared time slots configured for allocating traffic information, wherein the first base station is operative to allocate a terminal at least one available time slot of the shared time slots.08-22-2013
20090097446METHOD AND SYSTEM TO GUARANTEE SERVICE RECEPTION WITHIN BROADCAST SYSTEM - A system and method is provided for ensuring that time for tuning to another RF channel between two TF frames in TF slicing exists while reception with a single hopping-tuner is enabled, and reception for terminals can be guaranteed when transmitting and receiving common services. An additional time for tuning is introduced for TF-sliced services, where the time for tuning can be inserted either before of after the P04-16-2009
20110228742Sub Channel Generation for a Wireless Mesh Network - In accordance with an example embodiment of the present invention, there is at least a method, apparatus, and computer program for dividing an available bandwidth into a plurality of frequency bands or channels, dividing each of the plurality of frequency bands or channels into a plurality of orthogonal sub-carriers, organizing the sub-carriers into a plurality of sub-channels, and assigning at least some of the generated sub-channels to at least one corresponding radio link between parent and child nodes of a mesh network.09-22-2011
20090225721HIERARCHICAL PILOT STRUCTURE IN WIRELESS COMMUNICATION SYSTEMS - A method for communicating control channel information in a wireless communication system, including transmitting a super-frame having a time-frequency resource region containing an allocation control channel and multiple pilot elements, at least some of which are associated with the allocation control channel, and indicating, in a configuration information control channel of the super-frame, a characteristic of the pilots elements associated with the allocation control channel.09-10-2009
20090252110METHOD AND APPARTUS FOR EXTENDED REVERSE DIRECTION GRANT IN A WIRELESS LOCAL AREA NETWORK (WLAN) - Methods and apparatus for extended reverse direction grant in a WLAN. In an aspect, a method includes transmitting data within a transmit interval to a plurality of the nodes, wherein the data comprises a first indicator. The method also includes receiving, in response to the first indicator, a data transmission from at least one of the nodes, wherein the data transmission was transmitted using a selected transmission resource and is received within the transmit interval. In an aspect, an apparatus includes a receiver to receive, within a time interval, first data over a common channel, the first data being decodable by other nodes. The apparatus also includes a controller to determine whether the first data comprises a first indicator, and a transmitter to transmit second data within the time interval using selected transmission resources, if the first data comprises the first indicator.10-08-2009
20090219885Adaptive Piconet Protocol - A method for adaptive piconet protocol begins by determining, by a master device, a number of slave devices that are currently affiliated with the master device in a piconet. The method continues by determining, by the master device, data requirements and/or voice requirements of each of the slave devices currently affiliated with the master device in the piconet. The method continues by establishing, by the master device, an information exchange format based on the number of slave devices and the data requirements and/or voice requirements of each of the slave devices. The information exchange format includes a single master data/voice request packet within a first time slot and multiple frequency locked partial packets for slave data responses and/or multiple frequency locked packets for slave voice responses within other time slots.09-03-2009
20090219884METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting/receiving control information in a wireless communication system are provided, in which physical layer signaling information to be transmitted in a frame is determined, a coded block is generated from signaling information having a fixed number of bits included in the physical layer signaling information, and a frame including the coded block is transmitted. The signaling information having the fixed number of bits includes information required for receiving other signaling information having a variable number of bits.09-03-2009
20090219883METHOD AND APPARATUS FOR TRANSMITTING SYNCHRONIZATION SIGNALS IN AN OFDM BASED CELLULAR COMMUNICATION SYSTEM - Disclosed is an apparatus and method for transmitting the synchronization signal in an Orthogonal Frequency Division Multiplexing (OFDM) based cellular system. The cell search process widely used in the OFDM based cellular system is divided into two steps for obtaining the frame timing synchronization and obtaining the cell-specific scrambling code. When designing the channel for obtaining the frame timing synchronization and the channel for obtaining the cell-specific scrambling code, different frequency reuse factors are applied to the synchronization channels of different steps according to the characteristics of each synchronization obtainment step in order to improve the performance of each step.09-03-2009
20090245197Methods and systems to mitigate inter-cell interference - The present invention provides methods and devices for mitigating inter-cell interference in communication environments having a plurality of cells. In some embodiments, a time-frequency transmission resource that includes multiple sub-carriers over multiple OFDM symbol intervals is partitioned into a first zone and a second zone. In the first zone, transmissions are transmitted on at least one frequency sub-band which is common to all of the plurality of cells. In the second zone, transmissions are transmitted on at least one frequency sub-band which is used by less than all of the plurality of cells, so as to mitigate inter-cell interference. In some embodiments, in the first zone transmissions are transmitted using a transmission power which is common to all of the plurality of cells and in the second zone transmissions are transmitted using a transmission power which is used by less than all of the plurality of cells so as to mitigate inter-cell interference.10-01-2009
20100265911A METHOD FOR DIVIDING A SUBCARRIER PERMUTATION ZONE AND AN INFORMATION CONFIGURATION SYSTEM - A method for dividing a subcarrier permutation zone in an Orthogonal Frequency Division Multiple Access system and an information configuration system for dividing a subcarrier permutation zone in the Orthogonal Frequency Division Multiple Access system are disclosed in the present invention. Wherein, the method for dividing the subcarrier permutation zone includes the following steps: a configuration unit performing configuration to a subcarrier permutation zone division information, and sending the subcarrier permutation zone division information to a configuration synchronization unit; the configuration synchronization unit calculating a configuration effective frame number, and sending the subcarrier permutation zone division information and the configuration effective frame number to a base station; the base station dividing the subcarrier permutation zone according to the subcarrier permutation zone division information and the configuration effective frame number. With the present invention, it can uniformly configure, in the whole network, the frame in which the subcarrier permutation zone appears and the position in the frame, so as to avoid the co-frequency interference between each of the adjacent zones.10-21-2010
20090252112RADIO COMMUNICATION METHOD AND A BASE STATION AND USER TERMINAL THEREOF - In a radio communication system, each of user terminals together with transmitting a data signal to a base station using different data transmission band frequencies that are assigned by a base station, performs time-division multiplexing of a pilot signal with the data signal and transmit the resulting signal to the base station. A resource management unit of the base station decides pilot transmission bands for each user terminal so that the pilot transmission band covers the data transmission band for each user terminal by frequency offset, and instructs the user terminal to transmit pilot signals using the decided pilot transmission band frequencies. Thereby the base station can estimate channel for each frequency of the data transmission band using the pilot signal.10-08-2009
20090252111APPARATUS AND METHOD FOR CHANNEL RESOURCE DESCRIPTION - An apparatus and method for describing channel resources comprising allocating channel resources for a plurality of tiles; and determining a description of the channel resources allocated for a tile of the plurality of tiles by performing one or more of the following steps: a) comparing the size of the tile to a tile size threshold (TH10-08-2009
20100002649Method and System for Generating Antenna Selection Signals in Wireless Networks - Embodiments of the invention describe a method for antenna selection (AS) in a wireless communication network, the network comprising user equipment (UE), wherein the UE comprises a plurality of subsets of antennas including a first subset of antennas and a second subset of antennas, and wherein the UE is configured to transmit a sounding reference signal (SRS) from a subset of antennas at a time. The method transmits a first SRS from the first subset of antennas, transmits a second SRS from the second subset of antennas, receives, in response to the transmitting the first SRS and the second SRS, information identifying an optimal subset of antennas from the first subset of antennas and the second subset of antennas, and transmits user data from the optimal subset of antennas.01-07-2010
20100150101DOWNLINK MULTIPLEXING - A communications system is provided in which persistently allocated resources used by a node to communicate data with another node of the communications system can be reallocated or new dynamic resources can be allocated to allow the node to communicate using both the persistently allocated resources and the dynamically allocated resources. The system does this without changing the structure of a control channel used to communicate resource allocations.06-17-2010
20120243503COMMUNICATION APPARATUS AND BASE STATION APPARATUS - There is provided a communication apparatus capable of effectively removing interference waves from a received signal while reducing the computation load. The communication apparatus includes a weight calculating unit. The weight calculating unit includes a calculating unit and a selecting unit. The calculating unit calculates a first weight and a second weight. The first weight is obtained, for a target known signal being an update target, by updating, using the target known signal, a weight of a first another known signal updated immediately before performing an update using the target known signal. The second weight is obtained, for a target known signal being an update target, by updating, using the target known signal, a weight of a second another known signal. The selecting unit selects one of the first weight and the second weight that has a lower estimation error.09-27-2012
20120243501Method and Apparatus for Closed Loop Transmission - In a wireless communication system, a method and apparatus for closed loop transmission is disclosed. In accordance with the preferred embodiment of the present invention, a time frequency portion of an uplink frame is dynamically reserved as a sounding zone for uplink channel sounding. A first message is transmitted to a first subscriber station in a downlink frame assigning a time-frequency resource within the sounding zone, and a sounding waveform. Furthermore, a signal is received from the subscriber station within the assigned time-frequency resource, a partial channel response is determined from the received sounding signal, and the subsequent transmission to the subscriber station is tailored based on the at least partial channel response.09-27-2012
20080316967Error control method, medium access control (MAC) frame designing method, and terminal registration method in wireless communication system, and recording medium - The MAC frame in a wireless communication system includes a terminal ID allocated to each of multiple terminals. At least one connection ID is allocated to each terminal having the terminal ID, and sub-carrier allocation information is allocated to each connection having the connection ID. The sub-carrier allocation information includes a sub-carrier allocation status for each sub-carrier, and the number of allocated information bits for each sub-carrier. The sub-carrier allocation status and the number of allocated information bits for each sub-carrier can be allocated, by sub-carriers, to the sub-carrier allocation information using a same number of bits; or the information on the sub-carrier allocation status is first allocated to the sub-carrier allocation information and the number of allocated information bits for each sub-carrier is allocated.12-25-2008
20120195286APPARATUS AND METHOD FOR TRANSCEIVING SIGNALS IN A WIRELESS COMMUNICATION SYSTEM - The present specification relates to an apparatus and method for transceiving signals between a terminal and a base station in a wireless communication system. The present specification relates to a signal-transceiving method in which location reference signals discriminated by frequency units for each base station, such that base stations which transmit location reference signals with the same location reference signal pattern can be further discriminated.08-02-2012
20120195285TRANSMISSION METHOD AND DEVICE FOR A DOWNLINK REFERENCE SIGNAL - The present invention relates a method in which a base station transmits a downlink signal by using a plurality of layers comprises the steps of: multiplexing and transmitting dedicated reference signals for the plurality of layers on the basis of a reference signal pattern, wherein 24 resource element positions comprised in the reference signal pattern are set as 6 groups, the 6 groups are set as 2 high-level groups, the reference signal for the plurality of layer is split and placed in the 2 high-level groups, and the reference signal for 2 or more layers placed in the same group is subjected to code-division multiplexing.08-02-2012
20100157937Uplink Reference Signal for Time and Frequency Scheduling of Transmissions - A method for multiplexing reference signal (RS) transmissions from user equipments (UEs), with the RS having a bandwidth larger than the data signal bandwidth (distributed RS) is provided. A transmission time interval (TTI) comprises of one or more sub-frames and each sub-frame comprises of at least two RS transmission periods and a plurality of data signal transmission periods. A distributed RS is transmitted during at least one of the at least two RS transmission periods in at least one of the sub-frames comprising the TTI. During the remaining RS transmission periods, for a UE having a data signal transmission, the RS bandwidth is substantially the same as the data signal bandwidth (localized RS). The total system bandwidth is divided into contiguous, non-overlapping sub-bandwidths, called reference signal multiplexing blocks (RSMBs). Transmission of distributed RS occurs within an RSMB and does not cross over different RSMBs. The size and number of RSMBs can be re-configurable in time and a re-configuration period is much larger than the TTI duration.06-24-2010
20100157935WIRELESS TRANSMISSION DEVICE AND WIRELESS TRANSMISSION METHOD - A wireless transmission device of the present invention includes n (where n is an integer of two or more) transmission antennas and a delay imparting section for delaying transmission signals supplied to the n transmission antennas by a maximum delay time (n−1)T or less based on a delay time T dependent upon a communication signal, which indicates whether to transmit the transmission signals by way of frequency diversity or multiuser diversity.06-24-2010
20100182976METHOD FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEMS - When a plurality of terminals share the same resources in a wireless communication system, and when control information such as acknowledgement/negative acknowledgement (ACK/NAK) information or scheduling information is transmitted, a method of efficiently performing code division multiplexing (CDM) is required to distinguish the plurality of terminals. In particular, it is necessary to develop a method by which a code sequence of CDM can be selected and used according to each cell condition. Provided is a method of forming a signal in a wireless communication system in which a plurality of terminals commonly share frequency and time resources. The method includes the operations of receiving condition information in a cell; selecting one of a plurality of time domain orthogonal sequences having different lengths, according to the condition information; and allocating the selected time domain orthogonal sequence to a control signal symbol block.07-22-2010
20100189069Joint Carrier Allocation and Time Sharing for OFDMA/TDMA Networks - A method and system provide multiple-access control and frequency band allocation, and transmission time sharing among multiple users in orthogonal frequency-division multiple-access (OFDMA) and time-division multiple-access (TDMA) networks. The method can be applied to uplinks and downlinks of multi-user, multi-carrier communication networks. Under a total transmission-power minimization constraint, the method can allocate carriers and transmission time to users optimally, and at the same time, can guarantee a data rate or equivalently a latency requirement of each user.07-29-2010
20100260137METHODS AND SYSTEMS FOR CHANNELIZATION - Methods and systems are described that are suitable for channelization, m particular, but not limited to, the IEEE 80216.m telecommunications standard. For a time-frequency resource, physical sub-carriers for each of one or more zones in the time-frequency resource are assigned to one or more zones having a respective type of transmission. At least one zone is allocated for a type of transmission using localized sub-carriers. The physical sub-carriers assigned to each zone are permuted to map to logical sub-carriers—Groups of resource blocks are formed, in which each resource block includes at least one logical sub-carrier for each of the one or more zones. The information defining the groups of resource blocks for each of the one or more zones can then be transmitted to a user. The information may be in the form of a zone configuration index.10-14-2010
20100182975UPLINK ACK TRANSMISSION FOR SDMA IN A WIRELESS COMMUNICATION SYSTEM - Techniques for transmitting acknowledgement (ACK) information in a wireless communication system are described. The system supports data transmission to multiple user equipments (UEs) on the same downlink resources with spatial division multiple access (SDMA). A base station sends a data transmission with multiple (M) layers to M UEs. The downlink resources used for the data transmission are associated with ACK resources used to send ACK information for the data transmission. The ACK resources may be partitioned into M portions, e.g., based on frequency division multiplexing (FDM). Each of the M layers is associated with a respective portion of the ACK resources. A recipient UE for each layer sends ACK for that layer on the associated portion of the ACK resources. For each ACK resource portion, one or more pilot symbols may be sent on one or more resource elements, and ACK symbols may be sent on remaining resource elements.07-22-2010
20090296651Data Allocation Method In Wireless Communication System And Wireless Communication System - A data allocation method in a wireless communication system in which data is allocated in both a time axis direction and frequency axis direction, and data is transmitted between a mobile station and base station according to an allocated schedule, the allocation method including: measuring propagation path information between the mobile station and the base station; and modifying an allocation width of a burst in the time axis direction or in the frequency axis direction based on the propagation path information.12-03-2009
20090109920WIRELESS COMMUNICATION SYSTEM, BASE STATION AND TRANSMITTING METHOD - A wireless communication system in which a terminal selects a signal from a plurality of known signals and transmits the signal to the base station by any region in a region specified by the base station. The wireless communication system includes a setting unit that sets a region by a frequency range and a time interval as the region to be specified, wherein the region set by the setting unit and a region set by another neighboring base station have a same frequency range and a same time interval.04-30-2009
20090109919Random Access Cyclic Prefix Dimensioning in Wireless Networks - User equipment (UE)-initiated accesses within a cellular network include non-synchronized random access requests when the UE is not synchronized with a base station that is serving a cell occupied by the UE. The random access request is formed by generating a set of samples at a selected sample rate, such that the set of samples spans a specified duration period, wherein the sample rate is one of a plurality of different sample rates enabling different implementations of the random access transmission. The specified duration period is integrally divisible by each of the plurality of different sample periods.04-30-2009
20090109918SYSTEM AND METHOD FOR IMPROVED SCHEDULING FOR TIME-FREQUENCY SLICING - A system and method for improved scheduling for time-frequency slicing. According to various embodiments, slot allocations are made so as to guarantee time for tuning between slots. When scheduling services for multiplexes covering multiple radio frequency (RF) channels, time is provided for the receiver to tune to another radio-frequency channel between at least two of the time frequency frames. This is accomplished by arranging slots so that a service carried in a slot within the tuning time before the end of a time frequency frame k is not transmitted in a slot within the tuning time after the beginning of the next time frequency frame k+1.04-30-2009
20100177732RADIO BASE STATION AND RADIO RESOURCE ALLOCATION METHOD AND RADIO COMMUNICATION SYSTEM - A base station, for allocating to a mobile station a radio resource in a time direction and a frequency direction of a frame to perform radio communications with the mobile station, includes a zone forming unit configured to apply to zones, into which the frame is partitioned in the time direction, one of pilot transmission methods different in terms of a pilot allocation or a pilot directivity and in an allocation of transmission data to a plurality of mobile stations in a first zone adjacent to a second zone with a pilot transmission method different from the pilot transmission method of the first zone applied to the second zone, a scheduler configured to schedule a first mobile station moving at a low speed to a vicinity of a boundary with the second zone at a higher priority than a second mobile station moving at a high speed.07-15-2010
20090316647CONTROL AND DATA INFORMATION COMMUNICATION IN A WIRELESS SYSTEM - A method of transmitting data information and control information is provided. The method includes encoding the control information and encoding the data information. The method further includes modulating the control information and modulating the data information. The method further includes spreading the modulated control information using a spreading code to generate spread control information. The method further includes superimposing the spread control information with the modulated data information. The method further includes transmitting the modulated data information with the superimposed spread control information.12-24-2009
20130215868METHOD AND DEVICE FOR TRANSMITTING MIDAMBLE SIGNALS IN WIRELESS COMMUNICATION SYSTEM - Discloses are a method and a device for transmitting midamble signals in a wireless communication system. The method for transmitting the midamble signals comprises the steps of: generating each of midamble signals for eight transmission antennas; and transmitting said midamble signals to a terminal through said eight transmission antennas. Among the midamble signals for said eight transmission antennas, a first midamble group which includes midamble signals for certain four transmission antennas and a second midamble group which includes midamble signals for the rest of four transmission antennas are transmitted through different resources.08-22-2013
20100254343METHOD FOR TRANSMITTING UPLINK PILOT SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR - A method for transmitting an uplink pilot signal in a wireless communication system is disclosed. The method for transmitting an uplink pilot signal in a wireless communication system includes forming a basic unit including a plurality of pilot Resource Elements (REs) and data REs and having a size of 4 subcarriers×9 Orthogonal Frequency Division Multiple Access (OFDMA) symbols, setting the plurality of pilot REs in the basic unit, and transmitting the basic unit to a base station. Each of the REs is time-frequency resource defined by one symbol index and one subcarrier index.10-07-2010
20100157933METHOD FOR PERFORMING RANGING PROCEDURE - A method for performing a ranging procedure includes transmitting a ranging request message through a randomly selected ranging slot to a base station, the ranging request message comprising a randomly selected ranging code, and receiving a ranging response message including collision information which informs that collision occurs when at least two user equipments transmit the same ranging code to the base station through the same ranging slot. Delay in the ranging can be reduced.06-24-2010
20100157936Uplink Reference Signal for Time and Frequency Scheduling of Transmissions - A method for multiplexing reference signal (RS) transmissions from user equipments (UEs), with the RS having a bandwidth larger than the data signal bandwidth (distributed RS) is provided. A transmission time interval (TTI) comprises of one or more sub-frames and each sub-frame comprises of at least two RS transmission periods and a plurality of data signal transmission periods. A distributed RS is transmitted during at least one of the at least two RS transmission periods in at least one of the sub-frames comprising the TTI. During the remaining RS transmission periods, for a UE having a data signal transmission, the RS bandwidth is substantially the same as the data signal bandwidth (localized RS). The total system bandwidth is divided into contiguous, non-overlapping sub-bandwidths, called reference signal multiplexing blocks (RSMBs). Transmission of distributed RS occurs within an RSMB and does not cross over different RSMBs. The size and number of RSMBs can be re-configurable in time and a re-configuration period is much larger than the TTI duration.06-24-2010
20100254342METHOD OF ALLOCATING RESOURCES IN WIRELESS COMMUNICATION SYSTEMS - A method of allocating resources in a wireless communication system includes dividing an available frequency band on a logical plane into a distributed zone and a localized zone, dividing the distributed zone into a plurality of subparts in time domain, and dividing the distributed zone and the localized zone into a distributed zone and a localized zone on a physical plane. The plurality of subparts included in one distributed zone on the logical plane is mapped to a different distributed zone on the physical plane.10-07-2010
20100254341SIGNAL TRANSMISSION METHOD AND DEVICE - A signal transmission method, which includes: each data symbol needing to be transmitted is weighted and repeatedly extended to obtain the extended data symbol of each data symbol; the extended data symbol of each data symbol and the pilot frequency symbol are modulated and mapped to the specified time-frequency locations of each corresponding block repeat resource block to obtain each corresponding repeat data unit block; each repeat data unit block is transmitted. A signal transmission device is also disclosed in the present invention.10-07-2010
20100254344Mechanism of dynamic resource transaction for wireless OFDMA systems - A method of dynamic resource transaction in wireless OFDMA systems is proposed. In macro-femto overlay network architecture, network and traffic condition varies dynamically. Dynamic resource transaction is a powerful mechanism to achieve effective interference mitigation and flexible radio resource management to enhance resource utilization as well as to improve link performance. Dynamic resource transaction can be performed by signaling or message exchange through backhaul network or air-interface connections. The signal or message through backhaul network can be directly exchanged among multiple base stations or be routed through a centralized self-organizing network (SON) server. In one embodiment, dynamic resource transaction is used to achieve adaptive reservation region configuration, a solution to avoid interference and frequent handover for high-speed mobile stations.10-07-2010
20100014481METHOD AND APPARATUS FOR TRANSMITTING REFERENCE SIGNAL, SETTING REFERENCE SIGNAL TRANSMISSION PATTERN, AND SETTING AND ALLOCATING RESOURCE BLOCK - A method for transmitting a reference signal, a method for establishing a reference-signal transmission pattern, and a method for establishing a block are disclosed. The reference-signal density is adjusted according to the request degree of the channel estimation performance, and then the reference signal is transmitted to a destination. As a result, the apparatus prevents prevent resources from being unnecessarily wasted, and acquires a high channel estimation performance as necessary, resulting in an increased production yield of a system.01-21-2010
20090073932Method and Apparatus for Associating a Packet with an H-ARQ Channel Identifier - A method in a base station of transmitting control information to a mobile station includes transmitting a persistent assignment to a mobile station, wherein the persistent assignment includes a plurality of ACID indications; and transmitting a subsequent assignment to the mobile station including an ACID derived from the plurality of ACID indications. In another method, a mobile station receives control information from a base station, including receiving a persistent assignment from the base station, wherein the persistent assignment includes a plurality of ACID indications; and receiving a subsequent assignment from the base station including an ACID derived from the plurality of ACID indications.03-19-2009
20100220685PILOT ARRANGEMENT METHOD IN MOBILE RADIO COMMUNICATION SYSTEM AND TRANSMITTER/RECEIVER ADOPTING SAME - A pilot arrangement method in a mobile communication system in which a working frequency band is divided into a plurality of predetermined bands, and time division multiplexing is performed, the method comprising, inserting a known pilot symbol into the plurality of predetermined frequency bands at a predetermined reference interval; and inserting to arrange the known pilot symbol into at least one of the plurality of predetermined frequency bands at a smaller interval than the predetermined reference interval, wherein a pattern inserting the known pilot symbol into a at least the one of the plurality of predetermined frequency bands at the smaller interval is changed according to a predetermined pattern.09-02-2010
20090190547NETWORKING METHOD OF SINGLE FREQUENCY NETWORK IN TD-SCDMA SYSTEM - Networking methods of a Single Frequency Network (SFN) in communication systems are disclosed.07-30-2009
20130128861METHOD AND APPARATUS FOR IMPLEMENTING BASEBAND RESOURCE POOL IN LTE BASE STATION - In a method for implementing a baseband resource pool in an LTE base station provided in the present invention, the LTE base station includes a main control module, a master board, and a slave board, and the master board and the slave board include baseband processing modules. In the method for implementing a baseband resource pool in an LTE base station provided in the present invention, the RACH processing capability of the LTE base station is improved by adding a slave baseband board including a baseband processing module.05-23-2013
20100278136Cooperative OFDMA and distributed MIMO relaying over dense wireless networks - A method for wireless communication combines OFDMA resource allocation and power control policies with cooperative relaying techniques. The techniques are preferably implemented in a dense wireless network of power-limited mobile devices assisted by mobile relay devices having superior power supplies. Preferably, MIMO beamforming techniques are used to further increase energy efficiency and spectral efficiency beyond the increases provided by ODFMA cooperative relaying.11-04-2010
20100296480WIRELESS COMMUNICATION SYSTEM, MOBILE STATION, BASE STATION, AND WIRELESS COMMUNICATION METHOD - In a wireless communication system in which a base station, a mobile station, and a correspondent station are connected via a network, the base station includes a sounding-reference-signal arrangement control unit that causes sounding reference signals 11-25-2010
20100278139RESOURCE SCHEDULING METHOD AND DEVICE - A resource scheduling method and device. The resource scheduling method includes: scheduling jointly at least two uplink or downlink time slots as a scheduling unit; and indicating resource allocation information of the jointly scheduled time slots in one resource allocation indicating process. With the invention, plural time slots can be scheduled jointly, and resource allocation information of the jointly scheduled time slots can be indicated in one resource allocation indicating process when performing the resource allocation indication to thereby reduce the number of resource allocation indications and further save an overhead of the system to perform the resource allocation indication.11-04-2010
20100278138Synchronization in OFDM Using Polynomial Cancellation Coding - In a method of enabling synchronization for a channel in an OFDM based telecommunication system initially providing a symbol for transmission and selecting at least two carrier frequencies, subsequently determining a respective weighting parameter for the selected frequencies and finally transmitting the symbol on all selected frequencies based on the weighting parameters.11-04-2010
20110128933METHOD AND APPARATUS THAT FACILITATES OPERATING A RELAY VIA A MULTIMEDIA BROADCAST SINGLE FREQUENCY NETWORK BASED BACKHAUL LINK - Aspects are disclosed for operating a relay via an MBSFN-based backhaul link. Control resources are allocated, which include a first set of control resources and a second set of control resources. For some embodiments, a portion of the first set of control resources is concatenated with a portion of the second set of control resources to form a concatenation of resources whereas, in other embodiments, an indication scheme is implemented to provide an indication of a first or second allocation size respectively associated with the first and second set of control resources. At least one control signal is then transmitted which includes at least one of the concatenation or the indication. Other disclosed embodiments are directed towards configuring a user equipment to decode a control signal generated according to the aspects disclosed herein.06-02-2011
20100296478DYNAMIC FUNCTION SLOT ASSIGNMENT IN INTRA-VEHICULAR WIRELESS NETWORKS - A wireless transmission method includes providing a commanding node and a plurality of sub-networks. Each of the sub-networks includes at least one responding node. Corresponding ones of a plurality of time slots are assigned to individual ones of the sub-networks based on at least one operational characteristic of the sub-networks. The time slots are disposed within a plurality of frequency channels. Communication is conducted between the commanding node and the sub-networks within the assigned time slots of the sub-networks.11-25-2010
20100296479 METHOD FOR SIGNALING UPLINK SYSTEM CONFIGURATION INFORMATION - A method for transmitting system configuration information about uplink multiplexing of a 16m mobile station (MS) and a 16e MS is disclosed. The method comprises transmitting the system configuration information every super frame comprised of a plurality of radio frames. The system configuration information comprises an uplink configuration of time division multiplexing (TDM) and frequency division multiplexing (FDM) of the 16m MS and the 16m MS for each of the plurality of radio frames.11-25-2010
20100296477METHOD AND APPARATUS FOR USE IN WIRELESS COMMUNICATIONS11-25-2010
20120230292BASE STATION APPARATUS, WIRELESS COMMUNICATION SYSTEM, AND WIRELESS TRANSMISSION METHOD - Allocation of transmission power is carried out adaptively without affecting adjacent cells. Included are a reception part that receives information from a mobile station apparatus, a transmission power determination part that determines transmission power when transmitting a wireless signal to a mobile station apparatus based on the received information, an acquisition part that acquires information about communication environment in each time channel or each frequency channel from the received information, a scheduling part that identified a time channel or frequency channel the relationship of which between transmission power and communication environment satisfies the condition for allocation and allocates transmission data and transmission power for transmission to a mobile station apparatus to a communication slot in the time channel or frequency channel, and a transmission part that transmits a wireless signal using the communication slot to which the transmission data and the determined transmission power have been allocated.09-13-2012
20090067383METHOD AND APPARATUS FOR A FREQUENCY DIVISION DUPLEX COMMUNICATION USING A TIME DIVISION DUPLEX MODEM - The present invention is directed to an communication unit an antenna and at least two modem cards. The first modem card is coupled to the antenna so that the first modem card transmits a first transmit signal at a first frequency during a first period and receives a first received signal at a second frequency during a second time period. The second modem card couple to the antenna so that the second modem card transmits a second transmit signal at the first frequency during the second time period and receives a second receive signal at the second frequency during the first time period. The communication unit can also include a synchronizer that is coupled to the first and second modem cards to generate a signal to synchronize the transmit and receive signals transmitted and received by the antenna.03-12-2009
20100157934BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD - The object is achieved by providing a base station apparatus for performing time and frequency scheduling in uplink packet access with: an interference amount measurement part configured to measure an uplink interference amount for each interference amount measurement unit which comprises a predetermined period and a predetermined number of frequency blocks; an interference amount determination part configured to determine whether the uplink interference amount satisfies a predetermined condition; and an overload indicator reporting part configured to report an overload indicator to a neighboring cell when the predetermined condition is satisfied.06-24-2010
20090103488PRACTICAL METHOD FOR RESOURCE ALLOCATION FOR QOS IN OFDMA-BASED WIRELESS SYSTEMS - A data communication resource allocation for OFDMA based wireless systems supporting heterogeneous traffic is provided by allocating the rates to users subject to power/bandwidth constraints, according to a user selection metric and rate allocation based on traffic requirements and channel conditions. Thus, a proportionally fair rate allocation with minimum rate constraint to data sessions and short term rate guarantees to real-time sessions can be provided.04-23-2009
20100150099Unified synchronous ranging channel structure and ranging code generation and detection in wireless OFDMA systems - A unified synchronous ranging channel is provided. The unified synchronous ranging channel has a ranging cyclic prefix length that is the same as a cyclic prefix length of a data channel. The unified synchronous ranging channel is used for one of initial ranging, handover ranging, and periodic ranging between a mobile station and a femto base station. In one embodiment, the synchronous ranging channel spans over a two-dimensional radio resource region having a first number of subcarriers along frequency domain, a second number of OFDM symbols along time domain, and a third number of time-domain repetition. At the transmit side, a ranging code sequence is generated by applying a fixed time-domain cyclic shift per OFDM symbol to a root sequence. At the receive side, the ranging code sequence is decoded by using a summation module, a likelihood-combining module, and a modified peak test module that normalizes a peak value.06-17-2010
20090323629Secondary Synchronization Sequences for Cell Group Detection in a Cellular Communications System - Timing parameters and an identity of a particular one of a number of cell groups are indicated in a signal transmitted in a cellular communication system having a radio frame in a physical layer, the radio frame comprising a number of time slots. In a known one of the time slots, a synchronization signal, S12-31-2009
20090219882CELL SEARCH METHOD, FORWARD LINK FRAME TRANSMISSION METHOD, APPARATUS USING THE SAME AND FORWARD LINK FRAME STRUCTURE - Provided are a cell search method, a forward link frame transmission method, an apparatus using the methods, and a forward link frame structure. The cell search apparatus includes a sync acquirer acquiring synchronization of sync channel symbols using a sync channel of a forward link, and a group detector detecting at least one hopping codeword element belonging to a hopping codeword of a target cell from a forward link signal containing sync channel symbols sequence-hopped using a hopping codeword corresponding to a code group to which a scrambling code of each cell belongs based on the acquired synchronization, and detecting a code group of the target cell based on the detected hopping codeword element, wherein the hopping codewords are orthogonal to a cyclic shift operation. Accordingly, a cell search time and the complexity of the cell search can be reduced.09-03-2009
20100220684HYBRID ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS WTRU AND METHOD - A hybrid orthogonal frequency division multiple access (OFDMA) wireless transmit/receive unit (WTRU) and method. A WTRU includes a transmitter and a receiver. The receiver processes received data to recover data mapped to the subcarriers using OFDMA. The receiver recovers first input data by separating user data from multi-user spread data and recovers second input data from non-spread data.09-02-2010
20110211551Method and Arrangement in a Radio-Access Network - The invention relates to a method and arrangement for transmitting and receiving control information in a radio-access network. A network node transmits first control information in a first part and second control information in a second part of a time-frequency region that is transmitted after a control region in a subframe. The second part is located later in the subframe than the first part. The second control information may be less time-critical than the first control information. An intermediate node receives and decodes the first control information at the end of the first part. When the first control information indicates that the subframe comprises data payload to the intermediate node, the intermediate node receives and decodes the data payload. The intermediate node receives second control information at the end of the second part.09-01-2011
20110085514BASE STATION, MOBILE STATION, AND COMMUNICATIONS METHOD - A base station carrying out communications with a mobile station with an Orthogonal Frequency Division Multiplexing (OFDM) method by using a predetermined frequency band out of a transmission band is disclosed. The base station includes an allocation portion that allocates, for a mobile station performing peripheral cell search, a band that includes a center frequency on a raster of a first band and has a bandwidth equal to or greater than a bandwidth of a second band with which a synchronization channel is transmitted.04-14-2011
20110085516Local Area Optimized Uplink Control Channel - A method for performing uplink signaling and data transmission between a terminal device and a network element is described. The method includes applying, during a transmission, at least one of TDM and FDM between a SRS, a control channel, a DRS and a data channel. Clustered sub carrier mapping is applied for the SRS and the control channel. The SRS is transmitted so as to function as a DRS for the control channel. The control channel and the data channel are transmitted during a same sub-frame. The method also includes receiving the SRS and receiving the control channel and the data channel during a same sub-frame. Control information and data are extracted from the control channel and the data channel. The SRS is used as a DRS for the control channel is included in the method. Apparatus and computer readable media are also described.04-14-2011
20100135242METHOD AND SYSTEM FOR REFERENCE SIGNAL PATTERN DESIGN - A base station comprising an allocator configured to allocate a plurality of dedicated reference (DR) signals to selected resource elements. In the even-numbered time slot in a first resource block, a first group of DR signals are: i) allocated to a first group of adjacent resource elements; and ii) allocated to a second group of adjacent resource elements. In the contiguous odd-numbered time slot in the first resource block, the first group of DR signals are allocated to a third group of adjacent resource elements. In the even-numbered time slot in a second resource block, the first group of adjacent DR signals are allocated to a fourth group of resource elements. In the contiguous odd-numbered time slot in the second resource block, the first group of DR signals are: i) allocated to a fifth group of adjacent resource elements; and ii) allocated to a sixth group of adjacent resource elements.06-03-2010
20100238896ON-HAND REVERSE-LINK PILOT TRANSMISSION - Pilots are transmitted on demand on a reverse link and used for channel estimation and data transmission on a forward link. A base station selects at least one terminal for on-demand pilot transmission on the reverse link. Each selected terminal is a candidate for receiving data transmission on the forward link. The base station assigns each selected terminal with a time-frequency allocation, which may be for a wideband pilot, a narrowband pilot, or some other type of pilot. The base station receives and processes on-demand pilot transmission from each selected terminal and derives a channel estimate for the terminal based on the received pilot transmission. The base station may schedule terminals for data transmission on the forward link based on the channel estimates for all selected terminals. The base station may also process data (e.g., perform beamforming or eigensteering) for transmission to each scheduled terminal based on its channel estimate.09-23-2010
20110249648Method of Handling Sounding Reference Signal Transmission Enhancement and Related Communication Device - A method of handling a sounding reference signal (SRS) transmission for a mobile device in a wireless communication system is disclosed. The method comprises enabling operation of at least one of an uplink (UL) multiple-input multiple-output (MIMO), an coordinated multi-point (CoMP) and a carrier aggregation (CA), and performing the SRS transmission using at least one of the UL MIMO, the CoMP and the CA on at least one operating component carrier to a network of the wireless communication system according to at least one of a mobile device-specific SRS configuration, a component carrier-specific SRS configuration and a cell-specific SRS configuration.10-13-2011
20110249647SYSTEMS, APPARATUS AND METHODS TO FACILITATE TRANSMISSION OF ACKNOWLEDGEMENT SIGNALS IN WIRELESS COMMUNICATION SYSTEMS - In accordance with aspects of the disclosure, a method, apparatus, and computer program product are provided for wireless communication. The method, apparatus, and computer program product may be provided for mapping a first signal to one or more resource elements being utilized by a second signal and transmitting the first signal utilizing the resource elements. The method, apparatus, and computer program product may be provided for pre-defining one or more resource blocks in a data region of a frame structure and transmitting an acknowledgement signal in at least one of the pre-defined resource blocks. The method, apparatus, and computer program product may be provided for identifying at least one downlink control channel and transmitting acknowledgment signals in the at least one downlink control channel for a plurality of user equipment.10-13-2011
20090213807Apparatus and method for allocating downlink burst in broadband wireless communication system - A method of allocating bursts in a broadband wireless communication system is provided. The method includes dividing a downlink period into a plurality of regions according to a burst property, calculating a residual symbol axis size and a residual subchannel axis size of a first region conforming to two-dimensional allocation among the plurality of regions, allocating bursts to be allocated to the first region in a descending order, wherein the bursts are respectively allocated in a rectangular shape having a length corresponding to the number of residual symbols along a time axis or in a rectangular shape having a length corresponding to the number of residual subchannels along a frequency axis, and allocating bursts to be allocated to at least one region conforming to one-dimensional allocation among the plurality of regions to the at least one region conforming to one-dimensional allocation according to a scheduling priority.08-27-2009
20110069672METHOD FOR UPLINK TRANSMISSION OF CONTROL INFORMATION IN MOBILE COMMUNICATION SYSTEM - A method for uplink transmitting control information in a mobile communication system is disclosed. A method for uplink transmitting control information in a mobile communication system includes receiving control channel configuration information for indicating a first period about a time interval in which a control channel is repeatedly allocated and a second period about a time interval in which the control channel is repeatedly allocated in accordance with the first period, generating a control channel at a predetermined position in a time-frequency resource region for uplink transmission in consideration of the first period and the second period, and transmitting control information through the generated control channel.03-24-2011
20120147847INTEGRATED CIRCUIT FOR CONTROLLING RADIO COMMUNICATION - Provided is a radio communication device which can prevent interference between SRS and PUCCH when the PUCCH transmission bandwidth fluctuates and suppress degradation of CQI estimation accuracy by the band where no SRS is transmitted. The device includes: an SRS code generation unit (06-14-2012
20110149901METHOD FOR TRANSMITTING CONTROL SIGNAL USING EFFICIENT MULTIPLEXING - A method of transmitting a control signal using efficient multiplexing is disclosed. The present invention includes the steps of multiplexing a plurality of 1-bit control signals within a prescribed time-frequency domain by code division multiple access (CDMA) and transmitting the multiplexed control signals, wherein a plurality of the 1-bit control signals include a plurality of the 1-bit control signals for a specific transmitting side. Accordingly, reliability on 1-bit control signal transmission can be enhanced.06-23-2011
20110149903APPARATUS AND METHOD FOR COMMUNICATING AND PROCESSING A REFERENCE SIGNAL BASED ON AN IDENTIFIER ASSOCIATED WITH A BASE STATION - A base station, which includes a processor and a transmitter, communicates a reference signal to wireless communication devices in a wireless communication system. The processor encodes the reference signal into a first set of transmission resources, encodes other information into a second set of transmission resources, and multiplexes the two sets of transmission resources into a subframe, such that the first set of transmission resources is multiplexed into at least a portion of a first set of orthogonal frequency division multiplexed (OFDM) symbols based on an identifier associated with the base station and the second set of transmission resources is multiplexed into a second set of OFDM symbols. The transmitter transmits the subframe to the wireless devices. According to one embodiment, transmission resources for carrying the reference signal may be allocated according to a predetermined allocation, a semi-static allocation, a dynamic allocation, and/or an allocation based on higher layer signaling.06-23-2011
20110149902APPARATUS AND METHOD FOR RECEIVING SIGNALS IN MULTI-CARRIER MULTIPLE ACCESS SYSTEMS - A method for receiving signals in a multi-carrier multiple access system is provided. The method includes receiving signals from at least one base station wherein each signal has a base station identifier, processing the signals to identify each base station by using the base station identifier, performing a channel estimation using the processed signals, combining the processed signals using information obtained from the channel estimation and decoding the combined signals. Also, an apparatus for receiving signals in a multi-carrier multiple access system includes a serial-to-parallel converter for converting a serial signal including a base station identifier from at least one base station to parallel signals, a Fast Fourier transformer for transforming the parallel signals, a parallel-to-serial converter for converting the parallel signals to a serial signal, a despreading processor for despreading frequency domain signals using the base station identifier from at least one base station, a channel estimator for compensating a channel variation between the at least one base station and a mobile station, a signal combiner for combining signals from base stations and a decoder for decoding the combined signal.06-23-2011
20100322183WIRELESS COMMUNICATION SYSTEM, TERMINAL DEVICE, AND WIRELESS COMMUNICATION METHOD IN WIRELESS COMMUNICATION SYSTEM - A wireless communication system including: a first terminal device; and a second terminal device, wherein wireless communication is performed between the first and second terminal devices, the first and second terminal devices each include a processing unit performs wireless communication with the second and first terminal device respectively, using a wireless resource allocated within a first or second zone in accordance with a distance between the first and second terminal devices, and a wireless frame including a frequency domain and a time domain is divided into at least the first and second zones in the frequency domain or the time domain.12-23-2010
20080253328Hybrid Multiple Access Method and System in Wireless Networks - A method and system access a channel in a wireless network of nodes. A coordinator transmits periodically a beacon, in which time between two consecutive beacons constitute a beacon interval. The coordinator and other nodes transceive a superframe during the beacon interval, in which the superframe begins with an active interval, which is immediately followed by an inactive interval, and in which the active interval begins with a contention free period, which is immediately followed by a contention access period, which is immediately followed by the inactive interval.10-16-2008
20100303038Method for optimizing network structures in radio networks - In WirelessHART networks, mechanisms are already known that ensure a practical composition of a radio network with regard to its structure, whereby for this purpose, so-called health reports are also utilized, which are transmitted by the individual nodes to a central master. It is the task of the invention to improve the efficiency of such networks. Since no conclusions concerning the connection quality in the network can be drawn on the basis of data collected up to now that relate to the status of the node as such, additional parameters of the network that characterize the connection quality are collected within the scope of the invention. These are evaluated by the central master, which derives measures for optimizing the efficiency of the network from them and automatically implements them.12-02-2010
20100260136Random access channel response handling with aggregated component carriers - Disclosed herein are methods, computer program instructions and apparatus for performing random access procedures in a wireless communication system. A method includes receiving at a network access node, in different time and frequency resources that are allocated for preamble transmission, and in different ones of a plurality of component carriers, a plurality of random access requests from individual ones of a plurality of user equipments; and transmitting a corresponding plurality of random access responses in a time and frequency resource of a single component carrier.10-14-2010
20110211552COMPUTED-AIDED MAPPING OF SYSTEM INFORMATION MEDIUM ACCESS CONTROL PROTOCOL MESSAGES - A method for computer-aided mapping of system information medium access control protocol messages onto a plurality of transport channels for transmission using an orthogonal frequency division multiple access method, wherein a scheduling of system information data packets information in the context of the mapping on a transport channel of the plurality of transport channels is carried out dependent on the type of the system information.09-01-2011
20100098020METHOD FOR TRANSMITTING DOWNLINK CONTROL SIGNAL - A method of transmitting a downlink control signal is disclosed, by which localized allocation and distributed allocation are efficiently used in transmitting a downlink control signal. The present invention includes multiplexing the downlink control signal in a manner of if there exists downlink data transmission to a prescribed UE, applying localized allocation to a transmission of the downlink control signal including the scheduling information on the uplink data transmission of the UE and applying distributed allocation to another transmission of the downlink control signal and transmitting the multiplexed downlink control signal.04-22-2010
20100098019METHOD FOR TRANSMITTING CONTROL SIGNAL USING EFFICIENT MULTIPLEXING - Methods of transmitting a control signal using efficient multiplexing are disclosed. One of the method includes the steps of multiplexing a plurality of 1-hit control signals within a prescribed time-frequency domain by code division multiple access (CDMA) and transmitting the multiplexed control signals, wherein a plurality of the 1-bit control signals include a plurality of the 1-bit control signals for a specific transmitting side. Accordingly, reliability on 1-bit control signal transmission can be enhanced.04-22-2010
20090252109METHOD FOR DEMODULATING BROADCAST CHANNEL BY USING SYNCHRONIZATION CHANNEL AT OFDM SYSTEM WITH TRANSMIT DIVERSITY AND TRANSMITTING/RECEIVING DEVICE THEREFOR - The present invention relates to a method for demodulating a BCH by using an SCH in an OFDM system with transmit diversity, and a transmitting apparatus and a receiving apparatus using the same. For this purpose, the present invention provides a transmit diversity transmission method for a transmitting apparatus of a base station that generates an SCH symbol and a BCH symbol, maps the SCH symbol and the BCH symbol to an OFDM signal, converts the OFDM signal into a time domain signal, and transmits the OFDM signal trough a selected antenna among a plurality of antennas. In addition, the present invention provides a method for demodulating a BCH by using an SCH to a mobile station that receives an OFDM signal from the base station, filters an SCH and a BCH from the OFDM signal, converts the OFDM signal to a frequency domain signal, calculates a channel estimation value by using the SCH and the BCH, and coherently demodulates the BCH. According to the present invention, coherent demodulation of a BCH can reduce a frame error generation probability, minimize a channel estimation error due to fading, reduce time for checking the number of antennas of the base station and time for demodulating the BCH, and reduce power consumption.10-08-2009
20090028109METHODS AND APPARATUS FOR POWER EFFICIENT BROADCASTING AND COMMUNICATION SYSTEMS - Methods and apparatus are disclosed for resource configuration in a cellular broadcasting and communication network, where a video stream can be transmitted from a base station to a mobile station as bursts of video and data frames in a particular sequential manner. Special scheduling signals announce video burst information to the subscribing mobile stations, allowing the mobile stations to turn on their transceiver circuitry only when video bursts arrive. In a video burst, the available data resources, in addition to video resources, transmit data application packets and/or special control information to the subscribing mobile stations. Methods and processes are also disclosed for a mobile station to use a single RF tuner within a system with multiple frequency bands.01-29-2009
20080212532APPARATUS AND METHOD FOR ALLOCATING RESOURCES IN A SINGLE CARRIER-FREQUENCY DIVISION MULTIPLE ACCESS SYSTEM - An apparatus and method for allocating resources in an Single Carrier-Frequency Division Multiple Access (SC-FDMA) communication system are provided, in which a Node B determines on a cell basis whether to turn or off inter-subband hopping and whether to turn on or off mirroring for a resource unit for the UE on a frequency axis along which at least two subbands are defined, at set hopping times, selects a resource unit by selectively performing inter-subband hopping and mirroring on the resource unit for the UE according to the determination, and allocates the selected resource unit to the UE.09-04-2008
20100309876PARTITIONING OF CONTROL RESOURCES FOR COMMUNICATION IN A DOMINANT INTERFERENCE SCENARIO - Techniques for supporting communication in dominant interference scenarios are described. In an aspect, communication in a dominant interference scenario may be supported with time division multiplex (TDM) partitioning of downlink control resources. For TDM partitioning, different base stations may be allocated different time resources. Each base station may send its control information in its allocated time resources and may avoid sending control information (or may send control information at a lower transmit power level) in time resources allocated to other base stations. In another aspect, communication in a dominant interference scenario may be supported with frequency division multiplex (FDM) partitioning of uplink control resources. For FDM partitioning, different base stations may be allocated different frequency resources. In one design, TDM partitioning may be used for downlink control resources, and FDM partitioning may be used for uplink control resources.12-09-2010
20100284363FREQUENCY HOPPING PATTERN AND METHOD FOR TRANSMITTING UPLINK SIGNALS USING THE SAME - A frequency hopping pattern and a method for transmitting uplink signals using the same are disclosed. A frequency hopping pattern is defined by combination of subband hopping, which is performed over one or more subbands divided from a system band for transmission of the uplink signals, and mirroring where resource blocks within one subband are arranged reversely based on the center of the subband. Sequences as to whether to apply minoring and subband hopping amount are cell-specific random numbers, and are generated independently or in combination.11-11-2010
20110134879WIRELESS COMMUNICATION DEVICE AND POWER DENSITY SETTING METHOD - Disclosed is a wireless communication device that, when both localized transmission and distributed transmission are used, can obtain channel estimation accuracy equivalent to that of localized transmission with distributed transmission. With this device, a setting unit (06-09-2011
20110134878 Media Access Control Scheme for a Multi-Frequency TDMA Network - A system for managing element management in an ad-hoc network is disclosed. The system employs a TDD/FDD communication protocol to allocate assignment of time/frequency slots to individual system elements. Time/frequency assignment is based on desired communication standards in conjunction with geographic mapping of adjacent stations to prevent interference between stations.06-09-2011
20110261783RESOURCE ASSIGNMENT METHOD AND MOBILE STATION - A resource assignment method and a Mobile Station (MS) are provided. The method includes: obtaining, by the MS, combined indication information carried in a resource assignment message after the MS receives the resource assignment message; judging whether a resource block indicated by resource assignment information in the resource assignment message is a segment of a Physical-layer (PHY) Protocol Data Unit (PDU) according to the combined indication information, and reading the segment of the corresponding PHY PDU according to the resource assignment information if the resource block is a segment of the PHY PDU; combining segments belonging to the same PHY PDU into a complete PHY PDU, wherein the segments are read according to multiple received resource assignment messages; and decoding the PHY PDU. The MS includes an obtaining module, a judging module, a reading module, a combining module, and a decoding module. The resource assignment method and the MS facilitate the design of resource assignment messages of one or several uniform formats, and therefore, the resource assignment messages have a fixed size which does not change dynamically with the number of segments, and the complexity and the cost of the MS are reduced.10-27-2011
20110261782RADIO COMMUNICATION SYSTEM, RADIO BASE STATION, AND THRESHOLD SETTING METHOD - A radio communication system including a threshold setting unit, which sets a channel assignment threshold for each respective communication channel thereupon, and a threshold setting unit, which sets a channel assignment threshold for each respective communication channel thereupon, for carrier sensing. The threshold setting unit employs a first random number, which is generated, based on an unique value of a radio base station, on a per communication channel basis, to set a first channel assignment threshold on the per communication channel basis. The threshold setting unit employs a second random number, which is generated, based on an unique value of a radio base station, on a per communication channel basis, to set a second channel assignment threshold on the per communication channel basis.10-27-2011
20110261781METHOD AND SYSTEM FOR PROVIDING AN UPLINK STRUCTURE AND MINIMIZING PILOT SIGNAL OVERHEAD IN A WIRELESS COMMUNICATION NETWORK - A method and system are provided having an uplink control structure and a pilot signal having minimal signal overhead for providing channel estimation and data demodulation in a wireless communication network. The uplink control structures enable mobile terminals to communicate with corresponding base stations to perform various functions including obtaining initial system access, submitting a bandwidth request, triggering a continuation of negotiated service, or providing a proposed allocation re-configuration header. A dedicated random access channel is provided to communicatively couple the base station and the mobile terminal so that the mobile terminal can select a random access signaling identification. A resource request is received at the base station to uplink resource information from the mobile terminal and an initial access information request is received from the mobile terminal to configure the base station connection. Pilot signals with varying density configurations are provided to include low density symbol patterns for multiple contiguous resource blocks and high density symbol patterns for single resource blocks.10-27-2011
20120147846BASE STATION AND METHOD FOR RESOURCE ALLOCATION USING LOCALIZED AND DISTRIBUTED RESOURCE BLOCKS - Embodiments of a base station and method for resource allocation using localized and distributed resource blocks are generally described herein. The base station comprises processing circuitry to allocate localized resources to user stations based on receipt of channel quality information received from the user stations and to allocate distributed resource to user stations based on non-receipt of channel quality information. The base station also comprises physical layer circuitry to transmit control information on a physical channel to indicate the resources that are allocated to each scheduled user station.06-14-2012
20080219211Frequency Domain Direct Sequence Spread Spectrum with Flexible Time Frequency Code - A spread spectrum radio frequency communication system includes a Forward Error Correction (FEC) algorithm to encode digital data to provide a plurality of symbol groups, the FEC algorithm using a Reed Solomon FEC code, an interleaving algorithm to map each one of the plurality of symbol groups into a corresponding one of a plurality of coherent subbands, and a Walsh encoder to encode each one of the plurality of symbol groups.09-11-2008
20110075629METHOD FOR USER EQUIPMENT TO PERFORM RANDOM ACCESS TO BASE STATION IN WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS MULTIPLE UPLINK AND DOWNLINK CARRIERS - A method for a user equipment to perform random access to a base station in a wireless communication system that supports multiple uplink and downlink carriers is provided. In the method, system information including cell identifier information of each of the downlink component carriers and PRACH TF slot and preamble sequence information which is common to all downlink component carriers, the system information being broadcast through each downlink component carrier corresponding to the cell identifier information, is received. A PRACH preamble is transmitted through one uplink component carrier linked to the downlink component carriers using the received PRACH TF slot and preamble sequence information. An RACH response is received through each of the downlink component carriers. The cell identifier information is used to transmit a Radio Resource Control (RRC) connection request signal and cell identifier information of a downlink component carrier, which the user equipment desires to access among the downlink component carriers.03-31-2011
20110051681METHOD OF SIGNALING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM WITH MULTIPLE FREQUENCY BLOCKS - A method for performing communication in a user equipment of a wireless communication system comprises receiving a control region through a specific frequency block of a plurality of frequency blocks, the control region including a plurality of control channels; identifying a first control channel for the user equipment in the control region; and performing an operation in accordance with information included in the first control channel, wherein the specific frequency block through which the first control channel is transmitted is changed according to a certain pattern with the lapse of time.03-03-2011
20110188467USER DEVICE, BASE STATION, AND COMMUNICATION METHOD FOR MOBILE COMMUNICATION SYSTEM - A user device for a mobile communication system employing a multicarrier scheme includes a control signal generating unit (08-04-2011
20110188466FACILITATING NOISE ESTIMATION IN WIRELESS COMMUNICATION - Providing for noise estimation in wireless communication, and particularly for access request signals transmitted by a user equipment (UE), is described herein. By way of example, a wireless signal receiver can employ unused signal dimensions of a wireless network for noise estimation. In addition, the unused signal dimensions can be selected for time-frequency resources that are associated with a particular wireless channel, in order to obtain a noise estimate for that channel. By employing unused signal dimensions, a noise measurement is likely to include no other signal transmissions, and provide an accurate estimate of noise on that channel. According to various aspects of the subject disclosure, one or more Chu sequences employed for signal transmissions, root sequences thereof, or one or more cyclic shifts of a root sequence can be employed for the unused signal dimension.08-04-2011
20100027499METHOD AND SYSTEM FOR A REFERENCE SIGNAL (RS) TIMING LOOP FOR OFDM SYMBOL SYNCHRONIZATION AND TRACKING - Aspects of a method and system for a reference signal (RS) timing loop for OFDM symbol synchronization and tracking may include tracking symbol timing in an Orthogonal Frequency Division Multiplexing (OFDM) signal based on at least a reference symbol set. A receiver timing may be adjusted based on at least the symbol timing. The symbol timing may be tracked by generating an output signal as a function of a guard time Δt02-04-2010
20100020760ORTHOGONAL FREQUENCY DOMAIN MULTIPLEXING (OFDM) COMMUNICATION SYSTEM - An OFDM communication system employs a cell time division time frame for a plurality of overlapping cells wherein the time frame comprises time slots with each time slot allocated to one of the overlapping cells and each time slot being either an information exchange time slot or a data time slot. Remote nodes (01-28-2010
20110216734SYNCHRONIZATION IN AN UPLINK SPATIAL DIVISION MULTIPLE ACCESS MODE OF A WiMAX WIRELESS COMMUNICATION SYSTEM - An apparatus and method for synchronization in an uplink spatial division multiple access (UL SDMA) mode of a WiMAX wireless communication system includes a first step (09-08-2011
20080316966OPTIMIZING POSITIONS OF TIME SLOTS IN A HYBRID TIME DIVISION MULTIPLE ACCESS (TDMA)-CARRIER SENSE MULTIPLE ACCESS (CSMA) MEDIUM ACCESS CONTROL (MAC) FOR MULTI-HOP AD HOC NETWORKS - A hybrid TDMA-CSMA MAC protocol is provided for allocating time slots within a frame having a structure in which transmission time is divided into a first number of actual TDMA time slots and a second number of “virtual” CSMA time slots. Each time a given node receives a Hello message, it can calculate variables based on an HSN field. A ratio of the first number to the second number can be dynamically adjusted depending upon the traffic conditions. When TDMA time slots within the frame are freed (e.g., no longer being used), slot position optimization techniques are provided for moving these freed TDMA time slots back into the CSMA portion of the frame and reallocating or moving other TDMA time slots into the portion of the frame that was previously occupied by the freed TDMA time slots to thereby maximize resource utilization.12-25-2008
20100265910METHOD, SYSTEM AND APPARATUS FOR ASSIGNING PILOT RESOURCES - Embodiments of the present invention provide a method, system and apparatus for assigning pilot resources. By assigning all or part of time and frequency resources of at least one configured SC-FDMA symbol in an UpPTS to an uplink SRS symbol and sending an assigning result to a mobile terminal, time and frequency resources in the UpPTS can be assigned to the uplink SRS symbol, so that after receiving the assigning result, the mobile terminal can send the uplink SRS symbol by using the time and frequency resources assigned to the uplink SRS symbol according to the assigning result.10-21-2010
20120147844METHOD AND SYSTEM FOR ALLOCATING RESOURCES FOR COMPONENT CARRIERS IN A WIRELESS COMMUNICATION SYSTEM - The present disclosure relates to a wireless communication system which has a plurality of component carriers and a method and system for allocating resources for each component carrier. The present disclosure relates to a scheme in which cell coverage is set for each component carrier in consideration of the wireless environment of the component carriers, and a scheme in which a random access process of a user equipment is controlled in accordance with said set cell coverage and resources are allocated in accordance with a priority configuration.06-14-2012
20120147843ALLOTMENT OF RADIO RESOURCES IN A BASE STATION OF A BROADBAND NETWORK - In order for professional mobile terminals for a critical mission of public security to make use of the radio infrastructure of a broadband network, for instance of the LTE type, the downward and upward frames are configured in a base station each in a first area dedicated to mobile terminals of lower priority and a second area dedicated to mobile terminals of critical mission of high priority. In the second area, sub-channels dedicated to a group of terminals of critical mission are allotted by order of priority to this group, to another group of mobile terminals of critical mission and to mobile terminals of lower priority.06-14-2012
20100067479METHOD FOR ALLOCATING RESOURCE, AND METHOD FOR TRANSMITTING RESOURCE ALLOCATION INFORMATION - A resource allocation method and a resource allocation information transmission method are provided. Smallest units of resource allocation are set as basic resource blocks and groups of a specific number of basic resource blocks are set as group resource blocks. Resources can be allocated in units of basic resource blocks or in units of group resource blocks depending on the amount of resources required for data transmission of each UE. Resource allocation information for allocation in units of basic resource blocks is set to be different from resource allocation information for allocation in units of group resource blocks, thereby achieving efficient allocation of communication resources.03-18-2010
20110110325CONTROL CHANNEL MANAGEMENT - A controlling base station sends, to a wireless communication device, control data related to communication between a communication base station and the wireless communication device. The control data is transmitted in accordance with a communication specification and is transmitted to allow reception by the wireless communication device of the control data within a control channel having a frequency and time allocated by the communication specification for the wireless communication device to receive control data transmissions from the communication base station.05-12-2011
20120039298APPARATUS AND METHOD FOR TRANSMITTING A REFERENCE SIGNAL IN A WIRELESS COMMUNICATION SYSTEM - A method of transmitting a reference signal by a base station in a wireless communication system is provided. The method includes: generating a plurality of reference signals for channel measurement, wherein the plurality of reference signals for channel measurement are different types; and transmitting the plurality of reference signals for channel measurement, wherein the plurality of reference signals for channel measurement are transmitted using one or more subframes as a duty cycle.02-16-2012
20120147848GENERATING AND ALLOCATING TIME-FREQUENCY MAPPING PATTERN IN A COMMUNICATION SYSTEM - A method is provided for generating and allocating time-frequency mapping pattern (TFP) in a communication system. A set of orthogonal TFPs is generated from a TFP. And a TFP from the set of orthogonal TFPs is allocated to a user equipment in a transmission time interval, TTI, within a cell of the communication system. Also provided are a transmitter, a base station, and a user equipment.06-14-2012
20120147845METHOD AND APPARATUS FOR TRANSMITTING DOWNLINK CHANNEL INFORMATION USING AN UPLINK BROADBAND MEASUREMENT SIGNAL IN A WIRELESS COMMUNICATION SYSTEM, AND METHOD AND APPARATUS FOR ACQUIRING DOWNLINK CHANNEL INFORMATION USING SAME - The present disclosure relates to a method and apparatus for transmitting downlink channel information using an uplink broadband measurement signal in a wireless communication system, as well as to a method and apparatus for acquiring downlink channel information using same.06-14-2012
20090257396System and method of adaptive frequency hopping with look ahead interference prediction - A novel and useful adaptive frequency hopping scheme for wireless devices and networks operating in a congested environment of similar devices, where capacity maximization is desired. The hopping sequence of each wireless link is dynamically adapted such that the impact of the surrounding interference is minimized and the interference induced onto the coexisting systems is also minimized. The scheme detects the repetitive presence of interference on a particular channel and comprises a replacement mechanism for swapping the interfered frequency-channel with one that would be clear for that particular time-slot. The mechanism detects interference during a redundant portion of the transmission (i.e. header or trailer) without having to experience packet failures (i.e. data loss). If the interference impact (e.g. corrupted header bits) exceeds a predefined threshold, that frequency channel is declared temporarily unusable for that time slot and is replaced with another in accordance with a frequency replacement policy. Periodic interference at a particular frequency, originating from a coexisting system of similar operating parameters, may also be detected at instances that are distant from the timeslots for which that particular frequency is to be used, such that frequency replacement in the hopping sequence can be scheduled ahead of time and collisions would be avoided altogether.10-15-2009
20110064045Allocation of Periodically Distributed Frames of Wireless Communication - Methods of allocating a plurality of periodically distributed frames of communication between a first wireless transceiver and a second wireless transceiver are disclosed. One method includes detecting periodic data for transmission between the wireless base station and the wireless mobile unit. A transmission map that maps frequency and time slots is generated for transmission of the data packets. Allocation information is included within less than all of a plurality of transmission maps of the plurality of periodically distributed frames. The allocation information designates frequency and time slots in which data packets identified as a periodic data type are transmitted to the second wireless transceiver for the plurality of periodically distributed frames.03-17-2011
20110064043SYSTEM, METHOD, AND APPARATUS FOR IMPROVED SPACE-TIME CODING AND DYNAMIC SWITCHING WITH ADVANCED RECEIVERS - Methods and apparatus for allocating time-frequency resources to mobile terminals in a wireless communications system in which time-frequency resources may be selectively used according to a first multiple-input multiple-output (MIMO) transmission scheme or a second MIMO transmission scheme that differs from the first MIMO transmission scheme. An exemplary method comprises, for at least a first scheduling instance, identifying a first group of mobile terminals corresponding to the first MIMO transmission scheme and a second group of mobile terminals corresponding to the second MIMO transmission scheme, allocating time-frequency resources in a first pre-determined time-frequency zone exclusively to mobile terminals belonging to the first group, and allocating time-frequency resources in one or more additional pre-determined time-frequency zones to one or more mobile terminals belonging to the second group. This method may be implemented in a base station of a WiMAX system, for example.03-17-2011
20110064044TRANSMISSION APPARATUS, RECEPTION APPARATUS, MOBILE COMMUNICATIONS SYSTEM AND TRANSMISSION CONTROL METHOD - A disclosed transmission apparatus comprises a switching portion that switches radio access methods; a frequency domain signal generation portion that allocates a radio resource to a spread chip sequence on which one of a fast Fourier transformation and a series/parallel conversion is performed in accordance with the switched radio accessed method, so as to generate a signal in a frequency domain; and a transmission signal generation portion that performs a fast inverse Fourier transformation on the signal in the frequency domain so as to generate a transmission signal.03-17-2011
20120155422MOBILITY-BASED RADIO RESOURCE ASSIGNMENT METHODS, SYSTEMS AND DEVICES - Mobility-based radio resource assignment methods, systems and devices can assign user equipment to different nonoverlapping groups of radio resources depending on mobility of the user equipment. The groups of radio resources are nonoverlapping in time, frequency and/or code. For example, the groups of radio resources can include different pilot symbol densities, link adaptation and/or scheduling algorithms. The radio resources may be Long Term Evolution (LTE) radio resources.06-21-2012
20110317656CLUSTER-SPECIFIC REFERENCE SIGNALS FOR COMMUNICATION SYSTEMS WITH MULTIPLE TRANSMISSION POINTS - Aspects of the present disclosure provide methods and apparatuses for transmitting—from all cells belonging to a cluster (e.g., for Joint Processing/Transmission (JP/T) Coordinated Multipoint (CoMP), also referred to as network MIMO (Multiple Input/Multiple Output))—reference signals (RSs) for channel state information (CSI) feedback to user equipment (UE) at the same time and frequency resources. In this manner, data is precluded from interfering with the CSI feedback scheme. Consequently, data need not be determined to reliably estimate the channel(s).12-29-2011
20120057563RADIO BASE STATION AND MOBILE COMMUNICATION METHOD - A radio base station including a resource assignment unit configured to determine a time direction resource, a frequency direction resource, and a code direction resource which are to be assigned as a reception quality notification resource that should be used for notifying each mobile station of a reception quality in a downlink, the resource assignment unit is configured to determine the time direction resources and the frequency direction resources, which are to be assigned as the reception quality notification resource, and then determine the code direction resources to be assigned as the reception quality notification resource the resource assignment unit is configured to assign, as the reception quality notification resource, in order from a frequency direction resource with a lower usage rate of the code direction resource, within each time direction resource.03-08-2012
20120207125BASE STATION AND COMMUNICATION METHOD THEREOF - Provided is a base station for communicating with a mobile station by assigning at least a part of a communication frame including a plurality of wireless communication channels in a frequency direction. The communication frame includes at least one special subframe having a data transmission region available for transmission to the mobile station and a data reception region available for reception from the mobile station, separated from the data transmission region in a time direction. The base station includes an assignment unit 08-16-2012
20120207126Control Channel Transmission and Reception Method and System - A first central controller of a wireless system selects a common reference signal (“CRS”) pattern for muting on a first type of control channel by the first central controller, the first type of control channel formed with resource elements (“REs”), identifies, for a first set of user equipments (“UEs”) in a serving area of the first central controller, a set of subframes including the first type of control channel, the set of subframes having REs that overlap the CRS pattern for muting, mutes the overlapping REs in the first type of control channel, frequency-division multiplexes the first type of control channel with data channels, and transmits, to the first set of UEs, the first type of control channel with the muted REs on the identified set of subframes.08-16-2012
20120008591RADIO COMMUNICATION CONTROL METHOD, RADIO BASE STATION APPARATUS AND USER APPARATUS - When a first traffic type to which a predetermined pattern of radio resources are allocated periodically and a second traffic type to which available radio resources are sequentially allocated are mixed and multiplexed, the present invention improves communication quality of the first and second traffic types. In a radio communication system in which a first traffic type to which a predetermined pattern of radio resources are periodically allocated and a second traffic type to which available radio resources are sequentially allocated are mixed and multiplexed, the first traffic type to which the predetermined pattern of frequency resources are allocated at fixed intervals is user-multiplexed using CDM and the second traffic type to which resource blocks are sequentially allocated starting from those in good states is multiplexed using FDM and TDM as defined in LTE.01-12-2012
20120008590RANGING CHANNEL STRUCTURES AND METHODS - To facilitate ranging between mobile terminals and a base station in a wireless communication network employing orthogonal frequency division multiplexing (OFDM) for uplink data communications, a periodic ranging channel for use by a mobile terminal is defined. The channel specifies a plurality N of blocks of sub-carrier frequencies of an OFDM frequency band which are non-contiguous within the OFDM frequency band. The channel also specifies a time slot within an OFDM subframe which spans one or more OFDM symbol periods. A ranging transmission is periodically sent as a spread signal across the specified N blocks of sub-carrier frequencies within the specified time slot. The duration of the ranging transmission may be less than a duration of the OFDM subframe. A notional grid of tiles representing time and frequency resources associated with the subframe may facilitate channel definition. A similar approach may be used to define an initial access channel for initial access transmissions.01-12-2012
20100322184Method and Apparatus for Generating Time-Frequency Patterns for Reference Signal in an OFDM Wireless Communication System - In one embodiment, a method for a wireless communication includes generating a first time-frequency reference signal pattern at a first base station. The first time-frequency reference signal pattern includes a modified version of a mother pattern of time-frequency of a fixed size. The method further includes transmitting a first reference signal using the first time-frequency reference signal pattern.12-23-2010
20120113953METHOD AND APPARATUS FOR THE JOINT DESIGN AND OPERATION OF SCHEDULING AND TRANSMISSION FOR DOWNLINK MULTI-USER MIMO WITH RECIPROCITY-BASED TRAINING - A method and apparatus is disclosed herein for scheduling and transmission for downlink multi-user MIMO (MU-MIMO). In one embodiment, the method comprises allocating a subset of time-frequency resources in the time-frequency plane to each distinct bin class, where each bin class comprises one or more bins of user terminals across the topology, and wherein user terminals in the one or more bins of each bin class are served across the topology by the subset of time-frequency resources. The method also comprises performing joint downlink MU-MIMO transmission using a plurality of bin class-dependent wireless transmission architectures at the plurality of base stations, where one or more bin classes is associated with one of the plurality of bin class-dependent architectures, and where each of the plurality of bin class-dependent architectures use different combinations of scheduling training and MU-MIMO transmission across the topology.05-10-2012
20120113952Transmission Resource Reservation Scheme - A method, apparatus, and computer program for acquiring transmission resources during a transmission period is provided. A first communication apparatus is arranged to utilize at least one other communication apparatus to reserve at least one additional transmission band for the first communication apparatus during the transmission period of the first communication apparatus. Upon reception of a message indicating availability of additional transmission band(s) from the at least one other communication apparatus, the first communication apparatus is configured to increase its transmission band during the transmission period.05-10-2012
20120020323METHOD AND APPARATUS FOR TRANSMITTING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus of transmitting a reference signal in a wireless communication system is provided. Demodulation Reference Signals (DMRSs) for a plurality of respective antennas is generated. The DMRSs are mapped to a resource region, and transmitted through the respective corresponding antennas. The DMRSs are multiplexed using at least one of frequency division multiplexing (FDM), code division multiplexing (CDM), and time division multiplexing (TDM) methods and mapped in the resource region. Also, a position of an orthogonal frequency division multiplexing (OFDM) symbol to which the DMRSs are mapped in the resource region is an OFDM symbol to which a physical downlink control channel (PDCCH) and a legacy cell-specific reference signal (CRS) are not mapped.01-26-2012
20120020322Random Access Channel Response Handling With Aggregated Component Carriers - Disclosed herein are methods, computer program instructions and apparatus for performing random access procedures in a wireless communication system. A method includes receiving at a network access node, in different time and frequency resources that are allocated for preamble transmission, and in different ones of a plurality of component carriers, a plurality of random access requests from individual ones of a plurality of user equipments; and transmitting a corresponding plurality of random access responses in a time and frequency resource of a single component carrier.01-26-2012
20120020321BASE STATION, COMMUNICATION TERMINAL, TRANSMISSION METHOD AND RECEPTION METHOD - A base station includes: means configured to manage frequency blocks; means configured to determine, for each frequency block, scheduling information for assigning one or more resource blocks to a communication terminal being in a good channel state; means configured to generate a control channel including the scheduling information for each frequency block; and means configured to frequency multiplexing control channels within the system frequency band and to transmit it. In addition, the base station transmits the control channel by separating a non-specific control channel to be decoded by a non-specific communication terminal and a specific control channel to be decoded by a communication terminal to which one or more resource blocks are assigned.01-26-2012
20090285173PILOT DESIGN USING COSTAS ARRAYS - A multi-pilot frame handler (11-19-2009
20120026970SYSTEM AND METHOD FOR SELECTING A TRANSMISSION CHANNEL IN A WIRELESS COMMUNICATION SYSTEM THAT INCLUDES AN ADAPTIVE ARRAY - A method for establishing wireless communication between a transmitter and a receiver in a wireless communication system is disclosed. The receiver includes an adaptive array that has at least two antennas. Each antenna receives a signal and produces a received signal. The transmitter includes at least two transmission channels for communicating the signal from the transmitter to the receiver. The wireless communication system suppresses interference at the receiver by applying an interference suppression technique when combining the received signals. The selection of a channel at the transmitter is based on the channel performance at the receiver for each transmission channel. The channel performance is based on a combining technique different from the interference suppression technique.02-02-2012
20120063413Communication Resource Allocation Strategy - A scheduling processor allocates a time slot of a communication protocol to a user equipment for data transmission based on received control data of the same or another user equipment in a current time slot and received user data of the same or another user equipment in a preceding time slot, while ignoring user data of the same or any other user equipment received in the current time slot. The scheduling processor also allocates a frequency resource to the user equipment. A control channel managing processor allocates signaling resources on a control channel for the submission of control information to the user equipment, which informs of the time slot allocated by the time domain scheduling processor as well as of the frequency resource allocated by the frequency domain scheduling processor.03-15-2012
20120063412RADIO BASE STATION AND MOBILE COMMUNICATION METHOD - A radio base station including a resource assignment unit configured to assign a time direction resource, a frequency direction resource, and a code direction resource, as a physical signal transmission resource for transmitting a predetermined physical signal, to each mobile station is disclosed. The frequency direction resource is specified by a frequency position within a frequency region when frequency bandwidths used in a plurality of physical signals transmitted by each mobile station are the same. The resource assignment unit is configured to assign the code direction resource after assigning the time direction resource and the frequency direction resource, as the physical signal transmission resource, to each mobile station, when frequency bandwidths used in physical signals transmitted by each mobile station are the same, and assign the code direction resource after assigning the time direction resource and the frequency direction resource, as the physical signal transmission resource, to each mobile station.03-15-2012
20120063410METHOD FOR SELECTING COMMUNICATION CHANNEL IN COMMUNICATION DEVICE OF WIDEBAND WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREOF - Provided is a method and apparatus for setting up a channel for communication between distributed devices in a wireless communication system. A method of selecting a communication channel in a communication device of a wireless communication system may include requesting scanning of channels between the communication device and a discovery device, receiving a channel scanning response message including a Distributed Reservation Protocol (DRP) Availability Information Element (IE) assigned for each scanned channel, and selecting a channel based on the DRP Availability IE.03-15-2012
20090135781METHOD AND ARRANGEMENT FOR TRANSMITTING AND RECEIVING RF SIGNALS THROUGH VARIOUS RADIO INTERFACES OF COMMUNICATION SYSTEMS - A method and arrangement for transmitting and receiving RF signals, associated with different radio interfaces of communication systems, employ a direct conversion based transceiver which substantially comprises one receive signal branch and one transmit signal branch. Mixing frequencies of the different systems are generated by a single common by use of an output frequency divider in combination with the synthesizer, and by use of filtering corresponding to a system channel bandwith by means of a controllable low-pass filter operating at baseband frequency.05-28-2009
20120106504METHOD, SYSTEM AND BASE STATION FOR SHARING OR JOINTLY USING A GERAN (GSM EDGE RADIO ACCESS NETWORK) MOBILE RADIO ACCESS NETWORK - A method for sharing or jointly using a GERAN (GSM EDGE Radio Access Network) mobile radio access network by at least a first mobile radio network operator and a second mobile radio network operator includes providing a radio access network for joint use by the at least first and second mobile radio network operators, wherein the radio access network provides at least a first radio frequency channel and a second radio frequency channel, the at least first and second radio frequency channels having each a TDMA frame (Time Division Multiple Access, frame) with eight time slots (TS05-03-2012
20120155425PILOT DESIGN FOR IMPROVED CHANNEL AND INTERFERENCE ESTIMATION - Techniques for transmitting pilot and for processing received pilot to obtain channel and interference estimates are described. A terminal may generate pilot symbols for a first cluster in a time frequency block based on a first sequence and may generate pilot symbols for a second cluster in the time frequency block based on a second sequence. The first and second sequences may include common elements arranged in different orders and may be considered as different versions of a single sequence. The terminal may transmit the pilot symbols in their respective clusters. A base station may obtain received pilot symbols from multiple clusters in the time frequency block. The base station may form each of multiple basis vectors with multiple versions of the sequence assigned to the terminal and may process the received pilot symbols with the multiple basis vectors to obtain a channel estimate for the terminal.06-21-2012
20120155423RADIO BASE STATION DEVICE, MOBILE STATION DEVICE AND RADIO COMMUNICATION METHOD - Provided is a downlink reference signal structure suitable for increase in number of transmission layers. A radio base station device (06-21-2012
20120155424COMMUNICATIONS DEVICE AND METHOD IN A HIGH-CAPACITY WIRELESS COMMUNICATION SYSTEM - The present invention relate to a wireless communication system; and, more particularly, to a communicating apparatus and method in a high rate wireless communication system.06-21-2012
20100278137METHOD AND APPARATUS FOR TRANSMITTING SIGNALS ACCORDING TO THE SEGMENTED ACCESS - A method and apparatus of transmitting signals for segmented access in a communication system is disclosed. The method for transmitting signals from a user equipment in a communication system includes the steps of selecting a predetermined channel structure depending on location of the user equipment among available channels defined differently depending on the location of the user equipment within a cell, and transmitting signals using the selected channel structure. Also, a method for transmitting signals using sequences allocated differently depending on location of a user equipment within a cell is disclosed.11-04-2010
20120106502Direct Communications in Wireless Networks - A method is provided for direct communications between members of at least one communication group of wireless entities, in which two communication groups are provided. A first group that has at least two wireless entities of an identical type, and a second group that has at least one wireless entity. A time slot is allocated in a frame belonging to a frame-based protocol for use by members of the first group to exchange direct communications between each other. The same time slot is used by at least one wireless entity of the second group to exchange non-direct communications in accordance with the frame-based protocol, or direct communication with one or more wireless entities of second group. Within the time slot, frequency resources within the same frequency channel are allocated to each of the two communication groups.05-03-2012
20110090863Method for Mapping Physical Random Access Channels - The present invention discloses a method for mapping physical random access channels, which comprises the following steps: the PRACHs in the same time domain location are mapped from low frequency to high frequency, or from high frequency to low frequency in usable frequency resource, wherein one PRACH occupies 6 resource blocks, and the frequency bands occupied by two adjacent PRACHs in the frequency domain do not overlap; or the PRACHs in the same time domain location are mapped from two sides to the middle in usable frequency resource, wherein one PRACH occupies 6 resource blocks, and the frequency bands occupied by two adjacent PRACHs in the frequency domain do not overlap. The present invention enables uniformly distributing the PRACHs which require to be processed by the same base station in the time domain, and decreasing the inter-cell interference of the second type PRACH to the utmost extent at the same time.04-21-2011
20110103343METHOD OF ARRANGING REFERENCE SIGNALS AND WIRELESS COMMUNICATION BASE STATION APPARATUS - Disclosed is a wireless communication base station apparatus whereby it is possible to prevent degradation of throughput of LTE terminals, even when LTE terminals and LTE+ terminals are present together. In this apparatus, a setting section (05-05-2011
20130010750WIRELESS RECEPTION DEVICE, WIRELESS TRANSMISSION DEVICE, AND WIRELESS COMMUNICATION METHOD - A wireless reception device includes a resource information acquisition section that is configured to acquire silent resource setting information showing that a silent resource which indicates that no signals are allocated in a predetermined resource among distributed resources in which a resource unit defined in a frequency-time domain is divided along a time direction and distributed at a predetermined frequency interval, a receiver that is configured to receive a signal including the distributed resources in which the silent resource is allocated; and an inter-cell interference measurement section that is configured to measure an inter-cell interference pertaining to an amount of interference affected by another cell based on the silent resource setting information and by use of the silent resource allocated in the distributed resources.01-10-2013
20120250655METHOD AND APPARATUS FOR TRANSMITTING A REFERENCE SIGNAL IN A MULTI-ANTENNA SYSTEM - Provided are a method and apparatus for transmitting a reference signal in a multi-antenna system. A terminal generates a plurality of reference signal sequences in which cyclic shift values different from each other are allocated to the respective plurality of layers, and generates a single carrier-frequency division multiple access (SC-FDMA) symbol to which the plurality of reference signal sequences are mapped. The SC-FDMA symbol is transmitted to a base station via a plurality of antennas. The cyclic shift values allocated to the respective layers are determined on the basis of a first cyclic shift value, which is a cyclic shift value allocated to a first layer from among the plurality of layers, and cyclic shift offsets which are allocated to the respective layers and which are different from each other.10-04-2012
20120250654DEVICE, SYSTEM AND METHOD OF WIRELESS COMMUNICATION - Briefly, according to embodiments of the invention, there is provided a wireless communication system and a method to receive by a base station from a first mobile station a first chain of data symbols transmitted by at least two antennas and having a first transmit diversity, to receive from a second mobile station a second chain of data symbols transmitted by at least two antennas and having a second transmit diversity. Both first and second chains of data symbols are transmitted from the first and second mobile stations at the same time, modulated according to an Orthogonal Frequency Division Multiplexing (OFDM) scheme and encoded by a space time block codes scheme.10-04-2012
20120314687METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING TRAINING SEQUENCE CODE IN COMMUNICATION SYSTEM - A method and apparatus for transmitting a training sequence code of a transmitting apparatus with a plurality of transmitting antennas in a communication system are provided. A transmitting apparatus allocates a plurality of time slots for the plurality of transmitting antennas to be divided into at least one frame, and sends a training sequence code with reference power for any one of the transmitting antennas, and sends remaining training sequence codes for remainders of the transmitting antennas with transmission power from zero to the reference power, in any one of the time slots. A receiving apparatus receives a plurality of training sequence codes for a plurality of transmitting antennas through any one of the plurality of receiving antennas from a transmitting apparatus, and selects one of the training sequence codes having the greatest reception power to estimate a channel. This may improve a channel estimation performance in a communication system.12-13-2012
20120314686METHOD FOR IMPROVING THE SUCCESS RATE OF RECEPTION OF CONTROL CHANNELS IN AN LTE SYSTEM - In some examples, a method for allocating a Cell Identity (CELL-ID) to a particular cell in a radio communication network is described. The method may include assigning a first Cell Identity (CELL-ID)12-13-2012
20120120912Method and Apparatus for Assigning Resources in a Wireless System with Multiple Regions - A method and apparatus of signaling radio resource allocation in a wireless communication system includes transmitting at least one region boundary to a mobile station indicating a division of the time-frequency resources into at least two regions, determining a time-frequency resource assignment for the mobile station, transmitting an indication of the determined time-frequency resource to the mobile station in the same region as the determined time-frequency resource, and transmitting a packet to the mobile station using the physical time-frequency resources corresponding to the determined time-frequency resource.05-17-2012
20120120911RADIO COMMUNICATION BASE STATION APPARATUS AND RADIO COMMUNICATION METHOD - A base station apparatus is provided, which includes a generator configured to generate a synchronization signal and a transmitter configured to transmit the generated synchronization signal. The generator is configured to generate a synchronization signal to be mapped on a subcarrier included in one of a plurality of frequency resource candidates that are separated by an interval, which is a common multiple of a determined frequency spacing and a subcarrier spacing between contiguous subcarriers, wherein the subcarrier spacing does not have a value that is a divisor of the determined frequency spacing.05-17-2012
20120120910System and method for measuring channel state information in a communications system - A method for operating a communications controller includes partitioning a full band signal selected from a set of orthogonal full band signals into a plurality of subband signals according to special signal frequency resource information of a special signal being transmitted by the communications controller in a manner that reduces or avoids a collision between the full band signal and the special signal, where the plurality of subband signals carries information for estimating a channel between the communications controller and a communications device. The method also includes assigning a subband associated with each subband signal in the plurality of subband signals to a respective subband time resource according to special signal time resource information of the special signal in a manner that reduces or avoids a collision between the subband and the special signal, where the assigned subband is part of a plurality of subbands.05-17-2012
20100290426REFERENCE SYMBOL DISTRIBUTION METHOD AND APPARATUS - At least some reference symbols dedicated to a particular communication device are transmitted in resource blocks allocated to other devices. This way, reference symbol assignments are not unduly restricted by other constraints placed on the boundary elements of a resource block. According to an embodiment, data and reference signals are transmitted by transmitting a resource block allocated to a first communication device. The resource block includes a plurality of resource elements, each resource element corresponding to a modulation symbol. At least one reference symbol associated with the resource block and dedicated to the first communication device is transmitted in a resource block allocated to a second communication device. On the receive side, the communication device can perform channel estimation based on reference symbols dedicated to the device that are transmitted in resource blocks allocated to the device and in resource block(s) allocated to other communication device(s).11-18-2010
20100290425OFDM COMMUNICATION CHANNEL - An OFDM communication channel using both frequency and time diversity (FIG. 11-18-2010
20100246527METHODS AND APPARATUS FOR GENERATION AND USE OF REFERENCE SIGNALS IN A COMMUNICATIONS SYSTEM - Apparatus and methods for generation and use of reference signals in a wireless communications system are described. A group-specific reference signal pattern may be generated for provision to a group of UEs or terminals in communication with an eNodeB or base station. The reference signal may be generated based on system parameters. Reference signals may be generated to span multiple contiguous physical resource blocks.09-30-2010
20100246528Method and Apparatus for Frequency Offset Compensation - Frequency offset compensating methods and apparatus are provided. A frequency offset of a terminal according to the pilots is estimated, and terminals are grouped according to the frequency offset of the terminals. The terminals in different frequency offset groups are dispatched and are scheduled to occupy the time frequency resources in different time slices. Frequency offset compensation is carried on for each group of terminals by using a corresponding frequency offset compensation value.09-30-2010
20120127951METHOD AND APPARATUS FOR ASSIGNING WIRELESS NETWORK PACKET RESOURCES TO WIRELESS TERMINALS - A method in which a network apparatus 05-24-2012
20120127954FEMTO BASE STATION AND METHOD FOR ALLOCATING RADIO RESOURCE THEREOF - A method for allocating radio resource to one or more first UEs by a femto BS, includes: acquiring information about one or more second UEs which are located within a cell coverage of the femto BS but served by the macro BS; receiving a control channel from the macro BS; acquiring radio resource information allocated to the second UEs by the macro BS from the control channel; and allocating radio resource to the first UEs such that the allocated radio resource does not overlap with radio resource information allocated to the second UEs.05-24-2012
20120127953MOBILE TERMINAL APPARATUS, RADIO BASE STATION APPARATUS, AND RADIO COMMUNICATION METHOD - To provide a radio communication method for enabling a control signal to be received with high quality and high efficiency, in the case of using spatial multiplexing transmission in data signals to transmit, and also transmitting the control signal in the same sub-frame, in the radio communication method of the invention, a mobile terminal apparatus receives a downlink signal including precoding information, separates a data signal and a control signal to assign to different radio resources, and performs MIMO-transmission on a signal of each transmission layer based on the precoding information, and a radio base station apparatus receives an uplink signal including the data signal and the control signal subjected to MIMO transmission, divides the uplink signal into data signals for each transmission layer, and reproduces the control signal from the uplink signal.05-24-2012
20120127952METHOD AND DEVICE FOR SUPERIMPOSING REFERENCE SIGNAL AND DATA BASED ON SPACE DIVISION MULTIPLE ACCESS - The present invention provides a method of superimposing data signals and reference signals in a space division multiple access communication system, a base station of the communication system transmitting the first layer resource block and another layer resource block to a terminal using the same time/frequency resources, reference signals in the first layer resource block and reference signals in the other layer resource block being orthogonal to each other, the method including superimposing data signals transmitted in the first layer resource block at positions of reference signals in the first layer resource block, making a spreading sequence of the superimposed data signals orthogonal to a spreading sequence of the reference signals in the first layer resource block. The present invention can effectively use resources consumed under a multiuser MIMO system and drastically improve the system performance.05-24-2012
20120163334RADIO COMMUNICATION CONTROL METHOD, RADIO BASE STATION APPARATUS AND MOBILE TERMINAL APPARATUS - To provide a radio communication control method suitable for transmitting a downlink shared channel and a downlink control channel for the shared channel with different base frequency blocks in a communication system in which a plurality of base frequency blocks is combined and the system band is thereby broadened, in the radio communication control method, when different component carriers are assigned to a PDCCH and a PDCCH, to actualize a DCI configuration with a CFI value included in DCI notified on the PDCCH, the DCI is provided with an additional field on which CFI value bits are set. Further, to actualize another DCI configuration with a CFI value included in DCI notified on the PDCCH, part of the DCI field is masked with the CFI value.06-28-2012
20100226337METHOD AND APPARATUS FOR CELL/SECTOR COVERAGE OF A PUBLIC CHANNEL THROUGH MULTIPLE ANTENNAS - A method for cell/sector coverage of a public channel through multiple antennas includes: dividing the physical resource for transmitting public channel signals in a frame into N physical resource blocks; generating N weighting vectors, where: each weighting vector comprises M weighting coefficients, M is equal to the number of antennas, and the difference of average antenna gain for N weighting vectors in different directions of a whole cell/sector is less than a preset value; selecting one of the N weighting vectors for each of the N physical resource blocks respectively, where the weighting vector varies with different physical resource blocks; and using the M weighting coefficients in the selected weighting vectors to weight the public channel signals in M antennas respectively, and transmitting the weighted public channel signals through the M antennas. In addition, an apparatus for cell/sector coverage of a public channel through multiple antennas is disclosed.09-09-2010
20120213196METHOD AND APPARATUS FOR EFFICIENT CONTENTION-BASED TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system, and more particularly to a method and apparatus for efficient contention-based transmission in a wireless communication system. The method for performing contention-based transmission in a wireless communication system according to one embodiment of the present invention comprises: setting a radio resource control (RRC) connection with a receiver end where the contention-based transmission is received; setting a resource area for the contention-based transmission to allow a collision with other transmission; and transmitting at least one of the data and control information on the resource area, wherein the resource area for the contention-based transmission can be hopped on a physical resource.08-23-2012
20080279148TDS-OFDMA COMMUNICATION SYSTEM USER IDENTIFICATION - In a TDS-OFDM communications system for uplink wireless communication multiple accesses through sub-channelization, the system comprising: a plurality of users with each user using a portion of available time-frequency radio resources to achieve orthogonal multiple access; a plurality of available bandwidth, wherein the available bandwidth is divided into multiple sub-bands; at least one the sub-carrier in each sub-band. Inside the sub-band for each user, at least one guard sequence, being used as the guard interval between transmitted symbols.11-13-2008
20120134338METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING A SIGNAL IN A WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS MULTI-USER MIMO TRANSMISSION - The present invention relates to a wireless communication system, and discloses a method and apparatus for transmitting/receiving a signal in a wireless communication system that supports multi-user MIMO transmission. According to one embodiment of the present invention, a method in which a mobile station receives a signal in a wireless communication system that supports multi-user MIMO transmission, comprises: a step of receiving information on the entirety of the transmission rank of the multi-user MIMO transmission; a step of receiving a reference signal and data for demodulation for the mobile station on the basis of the information on the entirety of the transmission rank; a step of acquiring channel information on the mobile station from the reference signal for demodulation; and a step of demodulating said data on the basis of the acquired channel information.05-31-2012
20120134337MOBILE COMMUNICATION SYSTEM, BASE STATION APPARATUS, AND MOBILE STATION APPARATUS - The amount of control information is reduced for specifying the transmission method for simultaneously transmitting uplink data and reception quality information, and uplink data and ACK/NACK. Delay in changing the transmission method is reduced, and the mapping of uplink data and reception quality information and of uplink data and ACK/NACK is realized, in compliance with modulation scheme and coding rate of the uplink data specified by the base station apparatus. In a mobile communication system the base station apparatus allocates, to the mobile station apparatus, resources wherein the base station apparatus transmits, to the mobile station apparatus, control information for specifying a transmission format for the mobile station apparatus to transmit information using the uplink, while the mobile station apparatus simultaneously transmits, to the base station apparatus, uplink data and reception quality information based on the specified transmission format when the control information from the base station apparatus is received.05-31-2012
20120134336MOBILE STATION COMMUNICATION DEVICE, INTER-MOBILE STATION COMMUNICATION SYSTEM, AND INTER-MOBILE STATION COMMUNICATION METHOD - A communication device is used by a mobile station to perform wireless communication with another mobile station. The communication device includes a processor configured to set a transmission resource according to a present position of the mobile station, the transmission resource being set based on transmission resource association information including different transmission resources assigned to plural assignment areas provided at different positions along a road through which the mobile station passes; and a transmitter configured to transmit data with the use of the transmission resource that has been set.05-31-2012
20120163335METHOD AND APPARATUS FOR TRANSMITTING MULTI-USER MIMO REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM FOR SUPPORTING RELAY - A method for transmitting a demodulation reference signal (DMRS) for down-link multi-user MIMO transmission according to an embodiment of the present invention comprises the steps of: mapping a DMRS for a first layer on a down-link physical resource block according to a first DMRS pattern; mapping a DMRS for a second layer on the down-link physical resource block according to a second DMRS pattern; and transmitting the down-link physical resource block. In the down-link physical resource block, a resource element corresponding to the second DMRS pattern can be punctured on the first layer and a resource element corresponding to the first DMRS pattern can be punctured on the first layer and a resource element corresponding to the first DMRS pattern can be punctured on the second layer.06-28-2012
20090059860SCHEDULER AND METHOD FOR ALLOCATING TIME AND FREQUENCY DIMENSIONS OF DOWNLINK BURSTS IN BROADBAND WIRELESS ACCESS NETWORKS - Embodiments of a scheduler and a method for assigning frequency and time dimensions of downlink bursts in broadband wireless access networks are generally described herein. Other embodiments may be described and claimed. In some embodiments, the frequency and time dimensions of downlink bursts are assigned to each of a plurality of subscriber stations based on one or more individual channel characteristics and one or more individual data requirements associated with the subscriber stations.03-05-2009
20120213193METHOD OF TRANSMITTING SCHEDULING REQUEST IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for requesting uplink resources in a wireless communication system is provided. A user equipment determines whether a scheduling request for requesting uplink resources is triggered. If the scheduling request is triggered, the user equipment transmits a first set of frequency domain sequences and a second set of frequency domain sequences in a subframe.08-23-2012
20120213192RADIO BASE STATION AND MOBILE COMMUNICATION METHOD - A radio base station eNB according to the present invention includes: a transmission format determination unit 08-23-2012
20120213195Simultaneous Transmission of Control Information - The invention relates to a configurer configured to configure a periodic transmission and an aperiodic transmission; combiner configured to combine the periodic transmission and the aperiodic transmission by using time division multiplexing, the time division multiplexing being carried out in a non-puncturing manner; and a transmitting unit configured to transmit the combined transmission as a clustered transmission by using frequency domain resources corresponding to periodic and aperiodic physical uplink shared channel resources.08-23-2012
20120213194SYSTEM AND METHOD FOR MOBILE COMMUNICATIONS - Systems and methods for mobile communications are disclosed herein. An example method for a mobile station includes receiving first data from a carrier on a first frequency using a first receiver of the mobile station in a first timeslot, tuning a second frequency of the carrier using the second receiver while the first receiver is receiving the first data during the first timeslot, and receiving second data from the carrier on the second frequency using the second receiver during a second timeslot that immediately follows the first timeslot, wherein the mobile station receives data on all timeslots without each of two time division multiple access frames.08-23-2012
20120076106MUTING SCHEMES FOR CHANNEL STATE INFORMATION REFERENCE SIGNAL AND SIGNALING THEREOF - A method of wireless communication is provided which includes establishing a time-frequency muting pattern including at least one data resource element (RE) and transmitting information indicating the time-frequency muting pattern to a user equipment. In some designs, the muting pattern is established by grouping a plurality of resource elements into muting groups such that the time-frequency muting pattern includes the muting groups.03-29-2012
20100195615TECHNIQUE FOR TRANSMITTING AND RECEIVING DOWNLINK REFERENCE SIGNALS - A technique for receiving and transmitting downlink reference signals is disclosed. When transmitting downlink data demodulation reference signals (DMRS) (or reference signals for downlink data demodulation) by using two or more layers, the DMRS of each layer may be multiplexed by using a code division multiplexing method and then transmitted. The DMRS for each of the two or more layers may be used for one user equipment or for two or more user equipments. And, downlink control signals for transmitting and receiving such DMRS may be configured to have the same format regardless of a single-user mode (or SU-MIMO mode) or a multi-user mode (or MU-MIMO mode), thereby being used.08-05-2010
20120177001SPACE DIVISION MULTIPLE ACCESS TRANSMISSION METHOD OF STATISTICAL CHARACTERISTIC MODE - A space division multiple access transmission method of a statistical characteristic mode is provided by the present invention. The method includes that: multiple receiving and transmitting antennae of a base station side are configured to one or more antenna arrays, and multiple space resource divisions are executed by each antenna array by using multiple unitary matrixes; by using a relevant matrix with long time statistics for each user channel on the base station side, the space resource division matching with the characteristic mode of each user and the space direction occupied by each user in the condition of the division are determined; a characteristic mode clustering is performed to the users by using the space resource division to which each user belongs; the users of the same characteristic mode are grouped into a space division user group by using the space direction occupied by each user; the space division multiple access transmission is executed by the users of the same space division user group by using the space resource divisions to which the users belong, and the characteristic mode transmission with long time statistics is executed by each user by using one or more column vectors of the corresponding unitary matrix; in the course of movement of each user, all of the user characteristic mode clustering, the space division user grouping, and the space division multiple access transmission in a characteristic mode, are dynamically executed with the variety of channel long time statistics characteristic.07-12-2012
20100272059MOBILE RADIO COMMUNICATION DEVICES AND MOBILE RADIO BASE STATION DEVICES - In various embodiments, a mobile radio communication device is provided. The mobile radio communication device may include a mobile radio communication protocol circuit configured to provide a home base station function for a mobile radio communication with a mobile radio communication terminal device, and a mobile radio resources allocation and reservation circuit configured to allocate and reserve mobile radio resources to a home base station for mobile radio user data transmission between the mobile radio communication device and the mobile radio communication terminal device.10-28-2010
20100027500Transmission pattern for the transmission of data in a radio communications system - A method for the transmission of data between base stations and terminal devices uses at least one first time-frequency-spectrum which contains a plurality of transmission resources. A transmission resource is defined by a section of the time-frequency-spectrum, which is formed by at least one subcarrier subdivided into time slots and by at least one time slot. As part of the method, data are transmitted between a base station and a terminal device in a frame on one transmission resource. The method is characterized in that the base station transmits the data in such a way that a combination of subcarriers and/or time slots of the transmission resource used for the transmission of the frame forms a transmission pattern characterizing the nature of the data. The base station selects the transmission pattern from a number of previously defined transmission patterns, depending on the nature of the data to be transmitted.02-04-2010
20100008321Base-Station Apparatus, Mobile Machine, Communication System, And Channel Allocation Method - A base-station apparatus measures a frequency variation and time variation based on a signal transmitted from a mobile machine. Then, based on the measured frequency variation and time variation, the base-station apparatus allocates either an adjacent sub-channel or a distributed sub-channel to the mobile machine. With this, the base-station apparatus allocates a sub-channel according to the wireless propagation environment where the mobile machine is located.01-14-2010
20100284364SEMI-PERSISTENT SCHEDULING METHOD AND APPARATUS BASED ON STATISTICALLY MULTIPLEXING IN TIME AND FREQUENCY RESOURCES - A semi-persistent scheduling method and apparatus based on statistically multiplexing in time and frequency resources, the method comprises steps of: allocating each initial transmission to use fixed time and frequency resources reserved for initial transmission by using a persistent grant, and allocating each retransmission to use time resource reserved for retransmission by using a persistent grant and dynamically allocating each retransmission to use frequency resource reserved for retransmission by using a dynamic grant or a default grant, wherein the initial transmission and the retransmission share the frequency resources within the same time slot.11-11-2010
20120257596METHOD AND APPARATUS OF SYSTEM SCHEDULER - Briefly, according to embodiments of the invention, there is provided a wireless communication system and a method to receive by a base station from a first mobile station a first chain of data symbols transmitted by at least two antennas and having a first transmit diversity, to receive from a second mobile station a second chain of data symbols transmitted by at least two antennas and having a second transmit diversity. Both first and second chains of data symbols are transmitted from the first and second mobile stations at the same time, modulated according to an Orthogonal Frequency Division Multiplexing (OFDM) scheme and encoded by a space time block codes scheme.10-11-2012
20120320870Time-Sharing of Sounding Resources - This invention is a method for time-sharing sounding resources. A first embodiment defines one common sounding period for all user equipment and all sounding resources. A second embodiment allows for different sounding periods so long as each individual sounding resource uses only one sounding period. A third embodiment offers the most flexibility in sharing of the sounding resources by permitting changes in time. The first option is a special case of the second option. The second option is a special case of the third option.12-20-2012
20120263143METHOD AND APPARATUS FOR ALLOCATING RESOURCES OF A CONTROL CHANNEL IN A MOBILE COMMUNICATION SYSTEM USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING - A method is provided for allocating resources of a control channel in a mobile communication system using Orthogonal Frequency Division Multiplexing (OFDM). The method includes, when a time index and a frequency index of available Resource Elements (REs) are defined as 10-18-2012
20120263142FREQUENCY HOPPING PATTERN AND METHOD FOR TRANSMITTING UPLINK SIGNALS USING THE SAME - A method for performing uplink transmission in a time domain transmission unit includes receiving, from a base station, hopping-mode information indicating whether a frequency hopping is an inter-slot hopping or an inter-subframe hopping and performing the uplink transmission using a resource block in the time domain transmission unit.10-18-2012
20120188978METHOD FOR SENDING AND RECEIVING CONTROL INFORMATION, APPARATUS AND COMMUNICATION SYSTEM - The present invention provides a method for sending and receiving control information, an apparatus and a communication system. The method for sending control information includes: setting respective control bits in a downlink control information (DCI) format to generate control information applied by a network side to a terminal, where the control bits include validity indication bits and transmission control bits, indication information indicating whether transmission control exercised by the network side on a transmission block is valid relative to the terminal is written into the validity indication bits, and the validity indication bits are located outside the transmission control bits; and sending the generated control information to the terminal. In the embodiments of the present invention improve efficiency of using an overhead required for transmitting the control information.07-26-2012
20120082130METHOD AND APPARATUS FOR MAPPING AND DETECTING CONTROL CHANNEL - A method and apparatus for mapping and detecting control channel are provided. The method for mapping a control channel includes: for the same aggregation level, according to a signaling length of a control channel corresponding to a component carrier, determining a corresponding search space for at least two control channels that have the same signaling length, so as to enable the at least two control channels that have the same signaling length to use the same search space, and mapping the at least two control channels that have the same signaling length to the determined corresponding search space. Therefore, conflicts between the control channels are reduced, and the number of times of blind detection of the control channels is also reduced.04-05-2012
20120082129METHOD FOR OPTIMIZED REFERENCE SIGNAL DOWNLINK TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM - A method and system optimizes the transmission of a downlink reference signal (DLRS) in a wireless communication system that uses orthogonal division multiple access (OFDMA) for the downlink. Each Node-B (base station) is capable of transmitting the DLRS reference symbols in different subframes of the OFDM radio frame and changing both the number and location of the subframes in response to changing network conditions. The network conditions include the number of terminals being served by the Node-B and multiple access interference (MAI) from adjacent Node-Bs.04-05-2012
20120082128METHOD AND SYSTEM FOR ADAPTIVE ALLOCATION OF FEEDBACK RESOURCES FOR CQI AND TRANSMIT PRE-CODING - In transmit pre-coding, a bandwidth and a feedback period to one or more CQI reporting units and a bandwidth and a feedback period to one or more PMI reporting units are assigned, respectively. Sub-divisions in time and/or frequency corresponding to the assigned bandwidths and the assigned feedback periods are dynamically adjusted based at least on uplink channel state information corresponding to the bandwidth and the feedback period assigned to the CQI reporting units, and the bandwidth and the feedback period assigned to the PMI reporting units. One or more feedback messages are generated based at least on the channel state information over the adjusted sub-divisions in time and/or frequency corresponding to the CQI reporting units and to the PMI reporting units, respectively. The bandwidth and/or the feedback period may be assigned based on the channel state information or as a function of a feedback rate.04-05-2012
20120082127METHOD TO ENHANCE DISCOVERY OF IDENTIFIERS MULTIPLEXED IN A PEER-TO-PEER CHANNEL - A method, an apparatus, and a computer program product for wireless communication are provided in which an identifier is sent in a peer discovery signal. In addition, a value is sent with the identifier in the peer discovery signal indicating at least one of a next time, a next frequency, or a next resource that the identifier will be sent. A method, an apparatus, and a computer program product for wireless communication are provided in which an identifier is received in a peer discovery signal. In addition, a value is received with the identifier in the peer discovery signal indicating at least one of a next time, a next frequency, or a next resource that the identifier should be expected to be received.04-05-2012
20090016295CONTROL CHANNEL DESIGN TO SUPPORT ONE-TO-ONE, MANY-TO-ONE, AND ONE-TO-MANY PEER-TO-PEER COMMUNICATIONS - A protocol is provided that facilitates downlink concurrent peer-to-peer communications (within a time slot or traffic slot) between one device and many terminals as well as uplink concurrent peer-to-peer communications (within a time slot or traffic slot) between a plurality of terminals and one device. The concurrent peer-to-peer communications may take place within an ad hoc network of devices. To facilitate such operation, a time-frequency structure is provided within a control channel that allows the device and terminals to identify the peer-to-peer connections. This time-frequency structure also allows terminals to identify other sibling terminals that have a connection with the same device, thereby allowing to more efficiently performing interference mitigation. That is, sibling peer-to-peer connections with the same device may be treated different from other non-related peer-to-peer connects for purposes of interference mitigation in a wireless network.01-15-2009
20110122838Configurable Pilots in a Wireless Communication System - Techniques for transmitting configurable pilots in a wireless communication system are described. The placement of pilots is determined based on an assignment of resources for transmission. Different placements of pilots are used for different assignments of resources. The assignment may be for one or more frames and/or one or more H-ARQ interlaces. The placement of pilot(s) in each frame or H-ARQ interlace may be determined based on the placement of pilot(s) in prior frame(s) or H-ARQ interlace(s). Pilots are sent at time and frequency locations determined by the placement of the pilots. Each pilot may be sent on one or more subcarriers in one or more symbol periods. The pilots may be TDM pilots and/or some other type of pilot. The pilots may be sent using IFDMA, LFDMA, EFDMA, OFDMA, or some other multiplexing scheme.05-26-2011
20130170470Method and Apparatus for Device Discovery through Beaconing - In accordance with an example embodiment of the present invention, a method comprises identifying at least one beacon opportunity at a wireless network device; selecting a beacon channel from a beacon slot that is a flexibly allocated frequency resource; and transmitting at least one beacon signal in the selected beacon channel multiplexed in a beacon frame during the identified beacon opportunity.07-04-2013
20130170468METHOD AND APPARATUS FOR SCHEDULING PEER-TO-PEER COMMUNICATION LINKS - An evolved Node B creates or updates peer sets from measured performance information received from one or more stations. The measured performance information includes at least one quality metric associated with a downlink signal sent from the evolved Node B to the one or more stations. The evolved Node B determines excluded timeslots and preferred timeslots based on current resource assignments in each timeslot and based on the peer sets, marks potential resources in an uplink portion of a resource allocation map, and allocates one of the potential resources for peer-to-peer communication between a transmitter station and one or more receiver stations.07-04-2013
20080298319Data Receiving Method For Mobile Communication Terminal - A method of receiving control information by a terminal in a mobile communications system having a single control channel and a plurality of common channels and having a network that periodically transmits the control information via the control channel, the method comprising: periodically receiving the control channel; detecting, at a particular time, an identifier from the received control channel; and receiving data via a particular common channel that is indicated by control information that includes the detected identifier.12-04-2008
20120327894Cellular Communication System Support for Limited Bandwidth Communication Devices - A network node that serves a host cell in a cellular communication system transmits, at (a) first time interval(s), first control channel information on a control channel that extends over a first bandwidth of a radiofrequency spectrum. The first control channel communicates information necessary to enable a first type of communication device to receive data from the host cell. The first type of communication device can receive first bandwidth-wide signals. At (a) second time interval(s), second control channel information is transmitted on a second control channel of a first M-cell. The second control channel occupies a second bandwidth that is smaller than the first bandwidth. The second time interval(s) do(es) not coincide with any of the first time interval(s). A second type of communication device having reduced receive bandwidth capabilities compared to those of the first type of communication device is thereby made capable of being served by the node.12-27-2012
20120263141SYSTEMS AND METHODS FOR RANGE EXTENSION OF WIRELESS COMMUNICATION IN SUB GIGAHERTZ BANDS - Systems, methods, and devices to enable range extension for wireless communication in sub-gigahertz bands are described herein. In some aspects, portions of packets are repeated in time and/or space when transmitting the packet in order to increase the chance that the packet can be decoded. The repetition of portions of the packet may be based, in part, on the channel characteristics of the channel over which the packet is sent. In some aspects, portions of packets are transmitted over a smaller bandwidth with increased power per frequency range.10-18-2012
20120327897METHODS AND APPARATUS FOR CELLULAR BROADCASTING AND COMMUNICATION SYSTEM - In a cellular wireless network, methods and apparatus are disclosed for a signal broadcasting scheme that can be individually augmented for users with poor reception. The network employs a first downlink channel for broadcasting data to all mobile stations, a second downlink channel for sending signals to a specific mobile station in a cell, and an uplink channel for feeding back information to the base station. To achieve a certain user reception quality, the system adjusts its broadcasting parameters based on the statistical analysis of the feedback data. If some users still require better reception, the system individually augments their broadcast signals via the second downlink channels. Methods and apparatus are also disclosed for synchronization of data distribution by base stations, which, in part, allows the receivers to combine the receiving signals and improve their reception quality.12-27-2012
20120327896METHOD AND APPARATUS FOR COMMUNICATION WITH A NETWORK IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method and apparatus for performing communications by adjusting a resource unit. Efficient allocation of resource units can minimize power consumption. The minimization of power consumption brings about great advantages to M2M (machine-to-machine) communication. A terminal can transmit or receive data via different resource units. In this case, the resource units can be determined by MS. That is, some MS may use a particular resource unit, while the others may use a different resource unit. When different resource units are given, corresponding radio resource regions are also determined differently from one another. However, the total number of tones corresponding to the resource units may be the same.12-27-2012
20120269161Method and Apparatus for Relaxing Uplink and Downlink RF Switching - A method and apparatus are disclosed to enable user equipment in a TD-SCDMA network to reduce or eliminate RF signal leakage from a transmitter to a receiver. In an aspect of the disclosure, a method includes receiving an assignment of an uplink time slot of a sub-frame and receiving an assignment of a downlink time slot of the sub-frame, wherein the uplink time slot is prevented from being sequential to the downlink time slot. In another aspect of the disclosure, a method includes receiving an assignment of an uplink time slot of a sub-frame associated with a first carrier frequency and receiving an assignment of a down-link time slot of a sub-frame associated with a second carrier frequency, wherein the first carrier frequency is prevented from being the same frequency as the second carrier frequency when the uplink time slot is sequential to the downlink time slot.10-25-2012
20120320871Methods, Mobile Station and Base Station, for Extended Sharing of Uplink Packet Data Channels in a GSM Network - A method in a mobile station (12-20-2012
20120093124METHOD AND DEVICE FOR SETTING DEMODULATION REFERENCE SIGNALS IN WIRELESS COMMUNICATION SYSTEM - The present invention provides a method of arranging demodulation reference signals in a radio communication system that communicates according to a coordinated scheme. Demodulation reference signals and data are transmitted to a receiving terminal through time/frequency resources of the radio communication system using a resource block as a base unit. The method includes arranging at least two orthogonal DM-RSs in two edge OFDM symbols for resource blocks of respective cells, a frequency offset existing between cells at positions of the orthogonal DM-RSs in the edge OFDM symbols, performing puncturing at positions corresponding to the orthogonal DM-RSs of the other cells in the edge OFDM symbols of the respective cells, arranging superimposing DM-RSs in the two edge OFDM symbols in a resource block of one cell and arranging the superimposing DM-RSs at positions corresponding to the resource blocks of the other cells, wherein positions of the superimposing DM-RSs are set between the positions of the orthogonal DM-RSs in the respective edge OFDM symbols.04-19-2012
20120093123RADIO BASE STATION AND MOBILE COMMUNICATION METHOD - A radio base station includes a resource assignment unit configured to determine a time direction resource, a frequency direction resource, and a code direction resource which are to be assigned as a scheduling request transmission resource for transmitting a scheduling request that requests scheduling for uplink data communication to each mobile station. The resource assignment unit is configured to determine the time direction resource and the frequency direction resource, which are to be assigned as the scheduling request transmission resource, and then determine the code direction resource to be assigned as the scheduling request transmission resource. The resource assignment unit is configured to assign, as the scheduling request transmission resource, in order from a frequency direction resource having a lower usage rate of the code direction resource in each time direction resource.04-19-2012
20120093122Method and system for transmitting position reference signal - The present disclosure discloses a method and system for transmitting a position reference signal. Wherein the method includes: frequency domain positions for transmitting a position reference signal are n physical resource blocks, and the value of n is obtained according to signaling; time domain positions for transmitting the position reference signal are the remaining orthogonal frequency division multiplexing symbols in a subframe, except for orthogonal frequency division multiplexing symbols for transmitting a physical downlink control channel and orthogonal frequency division multiplexing symbols for transmitting a cell-specific reference signal; and the position reference signal is transmitted according to the frequency domain position and the time domain position. By adopting the method and the system of the present disclosure, the transmitting of the position reference signal is realized, and the positioning precision of a UE is ensured.04-19-2012
20120087335Multi-site mimo cooperation in cellular network - In a cellular communications network comprising a plurality of transmitting sites wherein each transmitting site comprises at least one antenna, a method of serving a given data stream to a target mobile terminal, comprising: designating at least two of the plurality of transmitting sites as cooperating sites; assigning tones to each transmitting site from a sub-band associated with the cooperating sites; dividing the data stream into at least two sub-data streams, each of the sub-data streams for transmission over selected tones; and interlacing tones of the cooperating sites in accordance with a selected one of a time switching and a frequency switching transmit diversity technique.04-12-2012
20120327895Cellular Communication System Support for Limited Bandwidth Communication Devices - A communication system node transmits first control channel information on a control channel that extends over a first bandwidth of a radiofrequency resource. The first control channel information is necessary to enable a first type of communication device, capable of receiving a signal having the first bandwidth, to establish a connection with a host cell. A MIB, occupying a second bandwidth-size part of the first bandwidth, is transmitted. The second bandwidth is smaller than the first bandwidth and is receivable by a second type of communication device having reduced receive bandwidth capabilities. The MIB has a first part comprising first part information necessary to enable the first type of communication device to establish the connection with the host cell, and a second part comprising second part information directly or indirectly enabling the second type of communication device to obtain parameters that enable connection establishment with the host cell.12-27-2012
20100215017METHOD FOR SOLVING NON-CONTROLLABILITY OF TERMINAL'S POWER SPECTRUM DENSITY IN OFDMA SYSTEM - The present invention discloses a method for solving non-controllability of terminal's power spectrum density in OFDMA system. It considers the problem of non-controllability of terminal's carrier transmit power resulting from the indeterminacy of carrier number allocation to the terminal in the OFDMA system which is solved by introducing the maximum carrier number that can be allocated to the terminal by combing AMC, the power control and the dispatching. By applying the present invention, the carrier power of the terminal can be best controlled by the system, it is most possible for the terminal to transmit power on carrier completely according to a set value, while it is greatly reduced the possibility that the terminal's power spectrum density is suddenly decreased out of control, which is caused by the summation of carrier powers in the set value exceeding the maximum total transmit power. Moreover, it is avoided occurrence of a large amount of error codes in that condition and the waste of power resources resulting from the excessive restriction on the carrier power.08-26-2010
20120287901METHOD FOR ACQUIRING RESOURCE REGION INFORMATION FOR PHICH AND METHOD OF RECEIVING PDCCH - A method for a user equipment (UE) to receive a PDCCH (physical downlink control channel) transmitted from a base station via a specific resource region includes receiving a PBCH (physical broadcast channel) including first system information and PHICH (physical hybrid ARQ indicator channel) related information from the base station and receiving the PDCCH transmitted from the base station via the specific resource region for downlink control information.11-15-2012
20100202401METHOD AND APPARATUS OF HYBRID BURST MAPPING IN OFDMA SYSTEMS - Provided are a method of adaptively allocating appropriate hybrid bursts according to terminal attributes including terminal position, channel state, and service type in an orthogonal frequency-division multi-access (OFDMA) system, and an upstream-MAP information element (US-MAP IE) structure supporting the method. The method includes dividing an upstream subframe into a plurality of zones depending on the number of OFDMA symbols and allocating bursts of a zone to a terminal according to the terminal attributes. Bursts are formed by allocating slots along a time axis in the upstream subframe, and are formed by allocating slots along a frequency axis in a downstream subframe.08-12-2010
20100202400TRANSMISSION WITH COLLISION DETECTION AND MITIGATION FOR WIRELESS COMMUNICATION - Techniques for transmitting signals on shared resources in a manner to detect and/or combat collision are described. In an aspect, a terminal may transmit a signal on a subset of resource elements in a resource block, and at least one null resource element with no signal may be used to detect for collision of the signal. In another aspect, different terminals may simultaneously transmit their signals on different subsets of resource elements in a resource block. These different subsets of resource elements may be pseudo-randomly selected to randomize interference. In one design, a terminal may determine a resource block to use for transmission of a signal, select a subset of the resource elements in the resource block, and transmit the signal on the selected resource elements, e.g., to at least one other terminal for peer-to-peer communication. The signal may be a peer discovery signal, a paging signal, etc.08-12-2010
20120140730ADVANCED TECHNOLOGY FRAME STRUCTURE WITH BACKWARD COMPATABILITY - An advanced technology frame structure is described herein. The advanced technology frame structure can enhance a first technology frame structure in dimensions of time, frequency, or a combination of time and frequency. A second technology frame structure time division multiplexes second technology subframes with the first technology downlink and uplink subframes. The first technology downlink subframe can be divided into a first technology downlink subframe and one or more second technology downlink subframes. Similarly, the first technology uplink subframe can be divided into a first uplink subframe and one or more second technology uplink subframes. These principles can be expanded upon and can be applied in many communication systems.06-07-2012
20130010749SUB-CHANNELIZATION WITH POWER BOOST - A method and system are provided for boosting power for a communications link between a base station and a user device, or user equipment, in a cellular communications network. In one embodiment, the communications link is a downlink between the base station and the user device established via a downlink channel having a full channel bandwidth including a number of sub-carrier frequencies. The base station determines whether a power boost is needed for a downlink to the user device. If so, the base station uses a subset of the sub-carrier frequencies from the full channel bandwidth as a reduced bandwidth channel, or sub-channel, for the downlink to the user device such that signal power is concentrated on the sub-carrier frequencies of the reduced channel bandwidth rather than spread across the sub-carrier frequencies of the full channel bandwidth. As a result, a power boost for the downlink is provided.01-10-2013
20130010746DYNAMIC ALLOCATION OF COMMUNICATION RESOURCES IN A WIRELESS SYSTEM - A method of receiving information by a wireless communication device is provided. The method includes receiving a plurality of wireless subframes at a periodic interval, wherein an interval duration of the periodic interval is greater than a duration of each of the plurality of wireless subframes. The method further includes determining for each wireless subframe of the plurality whether the wireless subframe includes a grant resource that indicates that a resource unit pattern of a plurality of selectively assignable resource unit patterns of resource units of the subframe includes information for the communication device. A method of transmitting information by the wireless communication device is also provided.01-10-2013
20130010747METHOD AND SYSTEM FOR COEXISTENCE BETWEEN WIRELESS COMMUNICATION NETWORKS - One wireless communication network 01-10-2013
20130010748SYSTEMS AND METHODS FOR UPLINK SIGNALLING - Methods, base stations and access terminals for uplink signalling are provided. Resource request channel characteristics such as location in time-frequency, sequence, time slot, are assigned to each access terminal to distinguish their resource requests from the resource requests of other access terminals. Access terminals make requests using a resource request on a resource request channel having the assigned characteristics. The base station can then determine which access terminal transmitted 0 the resource request based on the resource request channel characteristics of the resource request channel upon which the resource>request was received. The base station then transmits a response to the request which may for example be a new resource allocation, a default allocation or a renewal of a previous allocation.01-10-2013
20130016694Method and Apparatus for Transport Block Signaling in a Wireless Communication System - A method and apparatus for generating a single statically defined downlink reference MCS table consisting of transport block sizes (TBSs) computed for 29 MCSs for each of j PRBs where j=1, . . . , N01-17-2013
20130016692DOWNLINK CONTROL WITH CONTROL-LESS SUBFRAMES - In a wireless communications system wherein control-less subframes share a common carrier with subframes that include control signaling, a method performed by a base station may include receiving a first indication from a network entity to maintain a designated set of subframes on a common carrier devoid of designated downlink control signals. The method may further include providing a second indication in a wireless transmission to a mobile entity, the second indication enabling identification of subframes in the designated set (i.e., the control-less subframes) by the mobile entity. In turn, identification of control-less subframes by the mobile entity prior to decoding the subframes may enable a more efficient control of blind decoding operations at the mobile entity and reduce blind decoding operations required for the mobile entity to decode downlink control information.01-17-2013
20130016693SCATTERED PILOT PATTERN AND CHANNEL ESTIMATION METHOD FOR MIMO-OFDM SYSTEMS - Methods and apparatus are provided for inserting data symbols and pilot symbols in an OFDM (orthogonal frequency division multiplexing) transmission resource utilizing frequency hopping patterns for the data symbols and/or the pilot symbols. Data symbols and pilot symbols are allocated for down link (base station to mobile station) and up link (mobile station to bases station) transmission resources in a two-dimensional time-frequency pattern. For each antenna of a MIMO-OFDM (multiple input multiple output OFDM) communication system, pilot symbols are inserted in a scattered pattern in time-frequency and data symbols are inserted in an identical frequency-hopping pattern in time-frequency as that of other antennas.01-17-2013
20100172318Handling Hybrid Automatic Repeat Requests in Wireless Systems - A mobile station may implement an uplink hybrid automatic repeat request acknowledgement channel. The mobile station may use frequency hopping to randomize inter cell interference. The mobile unit may use time division multiplexing, frequency division multiplexing, and/or code division multiplexing.07-08-2010
20100172317METHOD AND APPARATUS FOR ENERGY-EFFICIENT PAGING AND RECONNECTING DEVICES - An apparatus and method for paging and reconnecting comprising selecting a time frequency code (TFC) channel from a plurality of TFC channels; starting a beacon period (BP) on the selected TFC channel; and transmitting a plurality of page packets on the selected TFC channel. In one aspect, the apparatus and method further comprising receiving at least one page packet from a plurality of page packets; identifying a selected TFC channel from a plurality of TFC channels; obtaining at least one time reference; and performing one of joining a beacon period (BP) at a next beacon period start time (BPST) (07-08-2010
20100172316RESOURCE ALLOCATION METHOD FOR ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING ACCESS SYSTEM - A resource allocation method for an orthogonal frequency division multiplexing access (OFDMA) system is provided. The resource allocation method includes dividing a frequency band occupied by a predetermined number of OFDM symbols into a plurality of subbands and determining the number of diversity subchannels, each of which comprises at least two time-frequency resources respectively included in different subbands, and the number of subband selective subchannels, which comprise time-frequency resources that are not included in the diversity subchannels; and generating the diversity subchannels and the subband selective subchannels according to the determined numbers and allocating a physical channel comprised of a generated subchannel to a user in a cell. Accordingly, diversity is enhanced without reducing the freedom of selection of a subband.07-08-2010
20110158200POSITIONING REFERENCE SIGNALS IN A TELECOMMUNICATION SYSTEM - Systems and methods are described to supply positioning reference signal (PRS) in a telecommunication system. A base station supplies a PRS sequence according at least to a time-frequency pattern of modulation symbols, wherein the time-frequency pattern assigns a modulation symbol to each frequency tone in a block of time-frequency resources allocated to transmit PRS. The base station associates a modulation symbol in the time-frequency pattern with a reference symbol in the PRS sequence through a mapping that represents the time-frequency pattern. The PRS sequence is conveyed to user equipment through delivery of a set of modulation symbols established through the mapping. Different time-frequency patterns can be exploited based on time-structure of a radio sub-frame. The user equipment receives the PRS sequence according to at least the time-frequency pattern of modulation symbols and utilizes at least the PRS sequence as part of a process to produce a location estimate.06-30-2011
20130022021FEEDBACK FOR MULTI-USER MIMO SYSTEMS - A base station (BS) for a SDMA-capable cell (C) of a radio communications system (01-24-2013
20130022020MULTIPLEXING SCHEMES FOR OFDMA - Methods and systems are provided for allocating resources including VoIP (voice over Internet Protocol) and Non-VoIP resources. In some embodiments, multiplexing schemes are provided for use with OFDMA (orthogonal frequency division multiplexing access) systems, for example for use in transmitting VoIP traffic. In some embodiments, various HARQ (Hybrid Automatic request) techniques are provided for use with OFDMA systems. In various embodiments, there are provided methods and systems for dealing with issues such as Handling non-full rate vocoder frames, VoIP packet jitter handling, VoIP capacity increasing schemes, persistent and non-persistent assignment of resources in OFDMA systems.01-24-2013
20130136101METHOD AND APPARATUS FOR CONFIGURING COMMUNICATION RESOURCE SETS AND METHOD AND SYSTEM OF RESOURCE MANAGEMENT - A method for configuring a wireless communication resource set, a resource set configuration apparatus, a method and system of wireless communication resource management, and a base station with the system of wireless communication resource management are provided, wherein the method for configuring wireless communication resource sets includes: ordering the resource sets according to the preset mode; dividing the ordered resource sets into segments, wherein the segments include segments with different types and different functions; and further dividing the segments into sections, wherein every section is used for a corresponding type of service.05-30-2013
20130136100APPARATUS AND METHOD FOR TRANSMITTING MUTING INFORMATION, AND APPARATUS AND METHOD FOR ACQUIRING CHANNEL STATE USING SAME - The present disclosure relates to an apparatus and a method for transmitting muting information in a wireless communication system, and to an apparatus and a method for acquiring channel state using same. In an exemplary embodiment, muting information includes: a first data field, having a serving cell for receiving from peripheral cells in a multi-cell environment, at least one of a CSI-RS pattern, the number of CSI-RS antenna ports, a CSI-RS duty cycle, and CSI-RS transmission subframe offset information, and using same for expressing the cycle and the offset of muting subframes, which pertain to information on a resource block that can generate interference between the peripheral cells and CSI-RS; and a second data field for expressing a specific muting pattern, which must be muted within the muting subframes, having either 12 bits or 28 bits that display muting application in a bitmap format.05-30-2013
20130136099SYMBOL MAPPING METHOD FOR REPETITION CHANNEL CODING - A symbol mapping method for repetition coding is disclosed. The symbol mapping method comprises performing repetition coding on codeword to output repeated codeword symbols, and mapping the repeated codeword symbols with subcarriers located in different localized resource blocks. According to the embodiments of the present invention, it is possible to obtain maximum reliability in a receiving side by mapping codeword bits with subcarriers to reduce the number of bits having low reliability when a transmitting side uses repetition coding. Also, it is possible to improve decoding throughput and obtain channel diversity.05-30-2013
20130136098APPARATUS AND METHOD FOR MACHINE-TYPE COMMUNICATIONS - A network and user equipment are configured to support machine type communications is provided. The UE includes processing circuitry to process a physical broadcast channel (PBCH) to acquire at least one system information block (SIB). The processing circuitry also processes the at least one SIB to determine a location of a lite SIB (SIB-L). The processing circuitry determines a location of a lite physical downlink control channel (L-PBCCH) from the SIB-L.05-30-2013
20130136097APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING DATA IN COMMUNICATION SYSTEM - A data transmission apparatus in a communication system includes a reception unit configured to receive adjacent terminal information from a plurality of terminals through a new frequency band for transmission and reception of data between the terminals and one AP (access point); a verification unit configured to identify positions of the terminals within a service coverage of the AP through the adjacent terminal information, group the terminals into terminal groups through position-based grouping, and verify transmission possible times to the AP, in terminals included in the terminal groups; and a transmission unit configured to transmit the transmission possible times to the terminals included in the terminal groups through beacon frames in the AP, wherein, as the transmission possible times for the terminal groups, different time intervals are allocated in a beacon interval of the beacon frames.05-30-2013
20120243502Method and Arrangement for Improved Interference Rejection Combining - In a method of interference rejection combining (IRC) for mitigating interference in received signals in the frequency domain for a telecommunication system, selecting (S 09-27-2012
20120243500Multi-Cell Channel State Information-Reference Symbol Patterns for Long Term Evolution Extended Cyclic Prefix and Code Division Multiplexing-Time Multiplexing - This invention is a method of wireless communication using candidate multi-cell CSI-RS time-frequency patterns in the invention. This invention avoids collision with antenna ports 0, 1, 2 and 3 used for transmitting cell-specific reference signals and port 5 used for transmitting demodulation reference signals. This invention satisfies the nested property requirement. This invention avoids collision with DM-RS signal for extended cyclic prefix transmission as long as DMRS Rank is less than or equal to 2. For ranks greater than 2, this invention produces patterns that may collide with Rel. 10 DM-RS for extended CP. The invention includes alternative patterns obtained by relabeling and/or reshuffling the CSI-RS antenna port numbers while preserving identical time-frequency resources assigned to CSI-RS in the time-frequency grid.09-27-2012
20080253327Energy Efficient Wireless Sensor Network, Node Devices for the Same and a Method for Arranging Communications in a Wireless Sensor Network - A wireless sensor network, a node device thereof and a method for arranging communications therein are presented. A first frequency is used in wireless communication of information between a headnode and subnodes of a first cluster (10-16-2008
20080310364Method and Apparatus for Assigning Resources in a Wireless System with Multiple Regions - A method and apparatus of signaling radio resource allocation in a wireless communication system includes transmitting at least one region boundary to a mobile station indicating a division of the time-frequency resources into at least two regions, determining a time-frequency resource assignment for the mobile station, transmitting an indication of the determined time-frequency resource to the mobile station in the same region as the determined time-frequency resource, and transmitting a packet to the mobile station using the physical time-frequency resources corresponding to the determined time-frequency resource.12-18-2008
20080232322METHOD AND APPARATUS FOR RECEIVING A CONTROL CHANNEL IN A MOBILE COMMUNICATION SYSTEM - A method and apparatus for receiving control information in a mobile communication system. A controller acquires information indicating variable Control Channel Elements (CCEs) allocated for first User Equipments (UEs) among CCEs constituting control channels, acquires information indicating fixed CCEs allocated for second UEs, selects the variable CCEs when a UE receiving the control information is included in the first UEs, and selects the fixed CCEs when the UE is included in the second UEs. A control information receiver receives the control information through the selected CCEs.09-25-2008
20080225792MULTIPLEXING OF FEEDBACK CHANNELS IN A WIRELESS COMMUNICATION SYSTEM - Techniques for sending signaling in a wireless communication system are described. Multiple feedback channels may be multiplexed such that they can share time frequency resources. Each feedback channel may be allocated a different subset of subcarriers in each of at least one tile. In one design, a subscriber station may determine time frequency resources including first and second portions of time frequency resources for first and second feedback channels, respectively. The subscriber station may send vectors of modulation symbols of a first length on the first feedback channel and/or vectors of modulation symbols of a second length on the second feedback channel. A base station may receive the first and second feedback channels and may perform detection on vectors of received symbols for each feedback channel to recover the signaling sent on that feedback channel.09-18-2008
20080225791METHODS FOR TRANSMITTING MULTIPLE ACKNOWLEDGMENTS IN SINGLE CARRIER FDMA SYSTEMS - A mapping scheme between a plurality of control channel element sets and a plurality of acknowledgement channel resource sets is established. Each of the control channel element sets includes at least one control channel element, and each of the acknowledgement channel resource sets includes at least one acknowledgement channel resource. In accordance with a scheduling grant transmitted using a control channel element set selected from the plurality of control channel element sets, a data packet is transmitted via a second node to a first node. Then, an acknowledgement channel message is transmitted via the first node to the second node by using at least one acknowledgement channel resource selected from the acknowledgement channel resource set that correspond to the control channel element set used for transmitting the scheduling grant in accordance with the mapping scheme. The acknowledgement channel message may be one of a positive acknowledgement message and a negative acknowledgement message.09-18-2008
20080225790Method and System for Operating Ultra Wideband Network in the Presence of Another Network - A method for ultra wideband transmission and an ultra wideband device. The ultra wideband device includes a receiver that is connected to a controller; wherein the receiver is adapted to receive a transmission from a component of the non-ultra wideband network; wherein the controller is adapted to: (i) allocate a first frequency band for a transmission of at least a portion of an ultra wideband network super-frame that comprises at least one short silence period; (ii) allocate a second frequency band for a transmission of at least another portion of an ultra wideband network super frame; wherein the length of the silence period is longer than a link establishment period required for establishing a link between components of a non-ultra wideband network that utilize multiple frequencies within the first frequency band; and (iii) alter an allocation of frequency bands in response to the reception of the transmission from the component of the non-ultra wideband network.09-18-2008
20130170469Methods and Apparatus for Link Adaptation for Single User and Multi-User Mimo - Methods of performing link adaptation in a wireless communication system for simultaneous transmission of codewords include selecting initial modulation and coding scheme (MCS) levels for the codewords, estimating a size ratio of the codewords, determining a number of scheduling blocks (SB) for the codewords with the initial MCS levels, and determining revised MCS levels for the codewords in response to the determined number of SBs. Transport block sizes are computed for the codewords, and it is determined if there is a need to increase the number of scheduling blocks in at least one of the codewords. If there is a need to increase the number of scheduling blocks in a codeword, scheduling blocks are added to the codeword, and the transport block size for the codeword is recomputed. The codewords are then simultaneously transmitted over different multiple input-multiple output (MIMO) communication channels using the same time and frequency resources.07-04-2013
20130142165METHOD AND SYSTEM FOR ITERATIVE MULTIPLE FREQUENCY HYPOTHESIS TESTING WITH CELL-ID DETECTION IN AN E-UTRA/LTE UE RECEIVER - A mobile device receives a signal comprising a PSS and a SSS. The mobile device performs iterative MFHT utilizing a reduced number of MFH branches. At each iteration, frequency offset estimation and Cell-ID detection are concurrently performed. An iteration starts with selecting initial frequency offsets spanning a frequency offset estimation range. The selected initial frequency offsets are placed in the MFH branches. A particular MFH branch with a maximum PSS correlation peak magnitude is selected at the iteration. A frequency offset estimate in the selected MFH branch is utilized for frequency control. The frequency offset estimation range utilized for the current iteration is reduced for the next iteration. A Cell-ID is declared if the Cell-ID is consistently detected not only within a particular iteration on the basis of having detected consistent cell ID information for the first and second halves of a radio frame, but also from iteration to iteration.06-06-2013
20110274081METHOD FOR TRANSMITTING A CONTROL SIGNAL IN A RADIO COMMUNICATION SYSTEM - According to the invention, the method for transmitting a control signal in a radio communication system comprises the steps of generating a control signal in accordance with the type of subframe for transmitting the control signal, wherein said subframe is a first type of subframe including a basic number of OFDM symbols, a second type of subframe including a larger number of OFDM symbols than the first type subframe, or a third type of subframe including a smaller number of OFDM symbols than the first type of subframe; and transmitting the control signal via a control channel having a structure determined in accordance with the type of the subframe.11-10-2011
20120250656METHOD AND APPARATUS FOR TRANSMITTING A REFERENCE SIGNAL IN A MULTI-ANTENNA SYSTEM - Provided are a method and apparatus for transmitting a reference signal in a multi-antenna system. A terminal generates a plurality of reference signal sequences in which cyclic shift values that are different from each other are allocated to the respective plurality of layers, and generates an orthogonal frequency division multiplexing (SC-FDMA) symbol to which the plurality of reference signal sequences are mapped. The SC-FDMA symbol is transmitted to a base station via a plurality of antennas. Each of the reference signal sequences is multiplied by either +1 or −1 in accordance with an orthogonal covering code (OCC) index corresponding to the cyclic shift field in a DCI format transmitted via a physical downlink control channel (PDCCH) for each layer.10-04-2012
20120250653METHOD AND SYSTEM FOR SCHEDULING FREQUENCY PHYSICAL RESOURCES BASED ON FREQUENCY HOPPING - The disclosure discloses a method and a system for scheduling frequency physical resources based on frequency hopping. The method comprises: in two time slots of frequency hopping transmission, reserving frequency physical resources for an activated semi-persistent scheduling new transmission user with a transmission period reached and a retransmission user; obtaining a scheduling type of a user required for scheduling, and according to an occupancy situation of the frequency physical resources, obtaining corresponding available frequency physical resources when employing a frequency-selective scheduling type and a non-frequency-selective scheduling type; and according to the scheduling type of the user required for scheduling, searching for corresponding available frequency physical resources, and allocating the frequency physical resources to a frequency-selective scheduling user and a non-frequency-selective scheduling user simultaneously during one scheduling period. The disclosure comprehensively utilizes advantages of the frequency-selective scheduling and non-frequency-selective scheduling, so that the users with good channel quality can utilize the frequency-selective scheduling to obtain the optimal frequency resources, the users without channel quality information can obtain frequency diversity gain through frequency hopping, and the system capacity can be improved without increasing equipment costs.10-04-2012
20130114564TRANSMITTER APPARATUS, RECEIVER APPARATUS, TRANSMISSION METHOD, AND NOTIFICATION METHOD - This invention relates to a transmitter apparatus, a receiver apparatus, a transmission method and a notification method that, when a switching between MIMO communication and non-MIMO communication is performed, can suppress the increase of an SRS (Sounding Reference Signal) resource, while suppressing the degradation of trackability of temporal variation of a channel. In a terminal (05-09-2013
20130094469APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING INFORMATION THROUGH FAST FEEDBACK CHANNEL IN BROADBAND WIRELESS COMMUNICATION SYSTEM - An apparatus and method for transmitting information through a fast feedback channel in a wireless communications system are provided. The apparatus includes a plurality of mappers for mapping a sequence, corresponding to an index to be fed back, to a first set of resource blocks in a fast feedback channel by using a first mapping pattern and to a second set of resource blocks in the fast feedback channel by using a second mapping pattern, and a transmitter for transmitting the sequence mapped to a plurality of sets of resource blocks, wherein the sequence is mapped to each of the plurality of sets of resource blocks, and wherein each element of the sequence is mapped to each resource block.04-18-2013
20130100926METHODS AND DVEICES FOR HANDLING REFERENCE SIGNALS IN A COMMUNICATIONS NETWORK - Methods in a first user equipment are provided for handling reference signals in a communications network. The user equipment is configured to receive a signal from a base station. The signal comprises a first slot and a second slot. The first slot comprises a first reference signal and the second slot comprises a second reference signal. The user equipment receives, from the base station, information that the first reference signal should be assigned to the second slot and that the second reference signal should be assigned to the first slot. The user equipment assigns the first reference signal to the second slot and the second reference signal to the first slot. The first user equipment processes the first reference signal assigned to the second slot and the second reference signal assigned to the first slot.04-25-2013
20130100927RADIO BASE STATION AND COMMUNICATION CONTROL METHOD - A radio base station (eNB04-25-2013
20110268082CHANNEL ARRANGEMENT METHOD AND RADIO COMMUNICATION BASE STATION DEVICE - Provided is a radio communication base station device which can prevent lowering of use efficiency of a channel communication resource for performing a frequency diversity transmission when simultaneously performing a frequency scheduling transmission and the frequency diversity transmission in a multicarrier communication. In the device, a modulation unit (11-03-2011
20130121307METHOD OF SIGNAL GENERATION AND SIGNAL GENERATING DEVICE - A transmission method simultaneously transmitting a first modulated signal and a second modulated signal at a common frequency performs precoding on both signals using a fixed precoding matrix and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.05-16-2013
20130121306SIGNAL GENERATION METHOD AND SIGNAL GENERATION DEVICE - A transmission method simultaneously transmitting a first modulated signal and a second modulated signal at a common frequency performs precoding on both signals using a fixed precoding matrix and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.05-16-2013
20130128860Methods and Systems for CSI-RS Resource Allocation in LTE-Advance Systems - A method of allocating resource elements in an orthogonal frequency division multiplexed (OFDM) system for transmission of a channel state information reference signal (CSI-RS) without overlapping with resource elements allocated to a port-5 user equipment-specific reference signal (URS) signal is disclosed. The method can include shifting in a frequency domain at least a portion of resource elements allocated to the CSI-RS in a normal-CP subframe. According to certain embodiments, the allocation of resource elements can be defined per an 8-port CSI-RS, or per a group of eight CSI-RS resource elements, within a single physical resource block (PRB) whose time-domain dimension is one subframe and whose frequency-domain dimension is 12 subcarriers.05-23-2013
20130176987TRANSMITTER, RECEIVER AND RADIO COMMUNICATION METHOD - The present invention aims to provide a transmitter, a receiver and a radio communication method capable of preventing any increase in overhead due to insertion of reference signals without deteriorating the channel estimation accuracy. The radio communication method is provided for mapping reference signals to radio resources of a plurality of layers and transmitting the reference signals, having the steps of: generating the reference signals; oversampling the reference signals; and mapping the oversampled reference signals to resource elements of the layers respectively. Reference signals to be mapped to different layers are subjected to frequency division multiplexing in resource elements of same time and frequency domains.07-11-2013
20130176986APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING DATA IN COMMUNICATION SYSTEM - A data transmission apparatus in a communication system includes a reception unit configured to receive terminal information from a plurality of terminals through a new frequency band for transmission and reception of data between the plurality of terminals and an AP (access point); a determination unit configured to determine access timing of the terminals to the AP by using the terminal information, and generate terminal access information including information on the access timing; and a transmission unit configured to transmit the terminal access information and beacon frames to the terminals, wherein the terminals access the AP and transmit data frames to the AP, at the access timing based on the beacon frames.07-11-2013
20110222506DELAY AND JITTER WIRELESS MESH NETWORK SCHEDULING - Schedule and channel assignment (SCA) in a wireless mesh network (WMN) is disclosed. A method includes: forming a representation of a sequence of permutation matrices from a n×n rate matrix. The entries of the rate matrix define the bandwidth of links between the n nodes of the WMN. Each of the permutation matrices represents active radio links between the n nodes. The sequence of permutation matrices defines a sequence of radio links to provide the desired bandwidth of links between said n nodes. Further, a representation of a sequence of partial permutation matrices corresponding to the sequence of permutation matrices is formed in such a way that each of the permutation matrices can be decomposed into a group of partial permutation matrices. Each of the partial permutation matrices in a group represents non-interfering radio links between the n nodes. In each timeslot, the n nodes are configured for radio transmission and reception in accordance with at least one of the partial permutation matrices in each group to transmit traffic between the n nodes. Example SCA can be used to provision longer-term guaranteed-rate backhaul traffic flows supporting multimedia services such as VOIP or IPTV between base-stations in a WMN, with near-minimal delay and jitter and near-perfect Quality-of-Service for every provisioned traffic flow.09-15-2011
20110255505SYSTEMS AND METHODS FOR BUNDLING RESOURCE BLOCKS IN A WIRELESS COMMUNICATION SYSTEM - A base station for use in a wireless network operable to communicate with a plurality of mobile stations. The base station transmits a downlink frame to a first mobile station. The downlink frame comprises time-frequency resource elements allocated in a plurality of physical resource blocks. The base station transmits the plurality of physical resource blocks in bundles having a bundle size that is a function of the system bandwidth configuration and the base station uses the same precoder for all physical resource blocks in the same bundle. The bundle size is from one physical resource block to three physical resource blocks.10-20-2011
20130114565STRUCTURE OF ENHANCED PHYSICAL DOWNLINK CONTROL CHANNEL (e-PDCCH) IN LONG TERM EVOLUTION (LTE) - Aspects of the present disclosure relate generally to wireless communication systems, and more particularly, to defining a structure of and enhanced physical downlink control channel (e-PDCCH). Certain aspects provide methods and apparatus for determining a search space in which a base station (eNodeB) may transmit an enhanced physical downlink control channel (e-PDCCH), wherein the search space comprises one or more fractional portions of frequency-time resources of a physical resource block (PRB) pair, and attempting to decode the e-PDCCH based on the determined search space.05-09-2013
20130148626SPECIFICATION OF A FREQUENCY AGILE DYNAMIC SPECTRUM ACCESS TDMA METHOD - Dynamic spectral assignment in an ad hoc network of wireless network nodes (06-13-2013
20120275428RESOURCE ALLOCATION METHOD AND APPARATUS - Embodiments of the present invention relate to the communication field, and disclose a resource allocation method, apparatus, and system, which solve a problem that the size of resource allocation indication information increases with the increase of the transmission bandwidth, and redundancy of physical layer signaling increases with the increase of the transmission bandwidth. The method includes: allocating time-frequency resources in specific bandwidth to a terminal, where the specific bandwidth is a band less than or equal to system bandwidth; determining the size of resource allocation information according to the specific bandwidth; and sending the resource allocation information to the terminal to indicate the allocated time-frequency resources. The embodiments of the present invention are mainly applied to the process in which the base station allocates time-frequency resources to the terminal.11-01-2012
20120275427DEVICE BEACON FOR HANDOFF MANAGEMENT OF HANDOFFS TO ACCESS NODES - An access node receives a device beacon transmitted from a wireless communication device in accordance with a system timing of a wireless wide area network (WWAN). When transmitted within a WWAN uplink channel, the device beacon is mapped to designated beacon channels within the time-frequency space of the uplink WWAN channel assignment. In response to the reception of the device beacon, communications between the wireless communication device and the access node are established. In one example, the access node is a femtocell base station. In another example, the access node is a wireless local area network (WLAN) access point.11-01-2012
20120275426FIXED MULTIPLE ACCESS WIRELESS COMMUNICATION - Disclosed is a user terminal for wireless communication with a remote access point, the user terminal comprising: a mapping module adapted to map one or more input data bits to an uplink symbol; a delay module adapted to apply a delay to the uplink symbol; a transmit module adapted to modulate the delayed symbol into a frequency channel; and a directional antenna oriented along a dominant path to the access point, the antenna being adapted to transmit the modulated symbol to the access point, wherein the delay is chosen such that the transmitted symbol arrives at the access point simultaneously with a further symbol modulated into the frequency channel and transmitted by a further user terminal.11-01-2012
20100316017ASSIGNMENT METHOD AND BASE STATION APPARATUS USING THE ASSIGNMENT METHOD - A control unit assigns time slots to terminal apparatuses, at regular intervals, over predetermined sub-channels among a plurality of sub-channels where the time slot is formed by frequency-multiplexing a plurality of sub-channels and frames each of which is formed by a plurality of time slots are contiguous. The control unit also arbitrarily assigns a plurality of time slots to terminal apparatuses, respectively, over the remaining sub-channels. An RF unit through an IF unit communicate with the terminal apparatuses assigned by the control unit.12-16-2010
20130156000METHOD AND APPARATUS FOR ASSIGNING CONNECTION IDENTIFIERS OF DEVICE-TO-DEVICE COMMUNICATIONS - A method and a device for assigning connection identifiers for a device-to-device communication are provided. The method includes checking unused connection identifiers among all entire connection identifiers that can be used for the device-to-device communication, determining a certain number of candidate connection identifiers to be used for the device-to-device communication with the peer user equipment among the unused connection identifiers, transmitting first information relating to data characteristics of a connection to be generated with the peer user equipment to the peer user equipment, and receiving second information relating to at least one connection identifier selected in consideration of the data characteristics based on the first information from the peer user equipment. The second information indicates that at least one connection identifier mapped to respectively different time resource regions is assigned to the connection.06-20-2013
20130156001REFERENCE SIGNAL DESIGN FOR COORDINATED MULTIPOINT TRANSMISSION - A method includes controlling a set of transmission points, which are configured to operate in accordance with a Coordinated Multipoint (CoMP) transmission scheme, to simultaneously transmit a composite Reference Signal (RS) to a mobile communication terminal. Feedback, which is indicative of a response of a composite communication channel between the transmission points and the terminal, is received from the terminal. The feedback is estimated in the terminal based on the composite RS received in the terminal from the transmission points. Subsequent transmission from the transmission points is configured based on the received feedback.06-20-2013
20130156002DOWNLINK CONTROL CHANNEL SIGNALING IN WIRLESS COMMUNICATION SYSTEMS - A method in a wireless communication device may include receiving a plurality of sub-frames, each sub-frame having time-frequency resource elements, at least one of the sub-frames having a control channel. In some implementations, the plurality of sub-frames forms a continuum of concatenated sub-frames. Each of the plurality of resource allocation fields of the control channel may indicate a resource assignment to the wireless communication device based on a channel quality report, as well as resource assignments in sub-frames of the continuum of concatenated sub-frames. At least one sub-frame of the continuum of concatenated sub-frames may include information indicating that at least some of the resource assignments are frequency diverse.06-20-2013
20130156003Method and System for Determining Physical Uplink Control Channel Resources - A method and system for determining physical uplink control channel resources are disclosed in the present document, a terminal determines a frequency domain resource, namely a location of a physical uplink control channel format 3 in total physical uplink control channel areas, used when the physical uplink control channel format 3 is sent according to parameters configured by a base station, and the location is determined according to a set location relationship. One location relationship is: from a bandwidth edge to a bandwidth center, the total physical uplink control channel areas including in turn a physical uplink control channel format 3 area, a physical uplink control channel format 2/2a/2b area, a hybrid resource block and a physical uplink control channel format 1/1a/1b area. In the present document, a feasible scheme is provided for determining resources of the physical uplink control channel format 3, which improves the system performance.06-20-2013
20120281671METHOD AND APPARATUS FOR ALLOCATING AND PROCESSING SEQUENCES IN COMMUNICATION SYSTEM - A method and apparatus for allocating and processing sequences in a communication system is disclosed. The method includes: dividing sequences in a sequence group into multiple sub-groups, each sub-group corresponding to its own mode of occupying time frequency resources; selecting sequences from a candidate sequence collection corresponding to each sub-group to form the sequences in the sub-group by: the sequences in a sub-group i in a sequence group k being composed of n sequences in the candidate sequence collection, the n sequences making a |r11-08-2012
20120281670Method and Apparatus for Interference-Resistant Wireless Communications - In accordance with an example embodiment of the present invention, an apparatus is disclosed that includes a resource module configured to allocate a first resource and a second resource that are at least partially synchronized in at least one of a time domain and a frequency domain in such a way that the first resource and the second resource share at least one of an overlapping frequency band and a same time slot. The apparatus also includes a transceiver configured to transmit a first signal on the first resource and receive a second signal on the second resource, wherein at least one of the first signal and the second signal is at least partially orthogonalized with respect to a third signal that is transmitted on one of the first resource and the second resource from a neighbor network device.11-08-2012
20110310838Method for Reference Signal Pattern Allocation and Related Communication Device - A method for reference signal pattern allocation for a eNodeB in a wireless communication system is disclosed. The method comprises allocating a plurality of physical resource blocks (PRBs) to at least one mobile device; and mapping a plurality of reference signal patterns to the PRBs according to a mapping rule.12-22-2011
20130188596BASE STATION - A base station communicates with a user device transmitting an uplink signal based on a single-carrier transmission scheme. The base station includes a frequency hopping determining unit configured to determine whether to apply frequency hopping to the user device based on radio-wave propagation information from the user device and a traffic type of data to be transmitted by the user device; a scheduler configured to allocate frequencies to the user device based on uplink channel reception conditions of the user device; and a reporting unit configured to report allocation information indicating resource units allocated by the scheduler to the user device. When the frequency hopping determining unit determines to apply the frequency hopping to the user device, the scheduler allocates, to the user device, resource units with different frequency bands in different slots.07-25-2013
20130188595RADIO DEVICE, RADIO COMMUNICATION SYSTEM, AND RADIO CONTROL METHOD - A radio device including: a processor configured to execute a procedure including a difference calculating process which calculates, when a plurality of transmission symbols are one symbol with different assignment positions of one of a frequency area and a time area, a difference between an assignment position of one reference symbol and an assignment position of another symbol among the plurality of transmission symbols, and a shift process which generates a symbol by shift processing of one of the frequency area and the time area with respect to the reference symbol, which is assigned to the an assignment position and subjected to an orthogonal transform processing, according to the difference; and a transmitter configured to performs transmitting processing based on the reference symbol which is subjected to the orthogonal transform processing and the generated symbol by the shift processing.07-25-2013
20120020324Method for allocating time and frequency resource for resource request indicator, method for transmitting resource request indicator and device thereof - A method for allocating a time and frequency resource of a resource request indicator (RRI), a method for transmitting an RRI, and a device thereof are provided, which relate to a wireless communication technique and reduce the overhead of the time and frequency resource. The method for allocating a time and frequency resource of an RRI includes: allocating codes for an RRI and other uplink control signaling; and multiplexing the RRI and other uplink control signaling in the same time and frequency resource in a code division manner01-26-2012
20120020320Network-Based Location of Mobile Transmitters - In an overlay, network-based, wireless location system, LMUs typically co-located with BTSs are used to collect radio signaling both in the forward and reverse channels for use in TDOA and/or AOA positioning methods. Information broadcast from the radio network and by global satellite navigation system constellations can be received by the LMU and used to reduce the difficulty of initial system configuration and reconfiguration due to radio network changes.01-26-2012
20120020319COOPERATIVE MIMO AMONG BASE STATIONS WITH LOW INFORMATION INTERACTION, A METHOD AND APPARATUS FOR SCHEDULING THE SAME - The proposal for eliminating inter-cell interference based on cooperation with the prior base station has problems such as resources occupation and Backhaul load increment. The invention provides a multi-base station cooperative multiple-input multiple-output (MIMO) with low information interaction in a wireless network and a scheduling method and a device thereof. The scheduling method comprises: a base station acquires information relevant to signal quality between the base station and each mobile terminal and reports to a scheduling apparatus, wherein the reported signal quality relevant information is preferably a relative signal strength indicator (RSSI) or a channel quality indicator (CQI) with small data size; the scheduling apparatus selects a service base station for each mobile terminal and determines a specific base station to eliminate the interference from a specific mobile terminal; and the scheduling apparatus further controls to correspondingly transmit service data of the mobile terminal to the service base station; the base station determines the serviced terminal and the terminal of which the interference is eliminated. When servicing the mobile terminal on a time-frequency resource and eliminating the interference from other base stations, the base station only needs to acquire channel state information of the mobile terminal associated with the base station to the base station on the corresponding time-frequency resource and calculate a pre-coded matrix, so as to pre-code mobile terminal service data from the service base station and generate downlink signals to be transmitted; and the process is independently carried out in various base stations.01-26-2012
20130195072Enhanced Control Signals Multiplexed With Data Signals - According to one embodiment, a method includes scheduling at least one time and at least one set of subcarrier frequencies to be used to transmit each of a plurality of data signals. Control signals may be addressed to at least one endpoint and may indicate at least one time and at least one set of subcarrier frequencies to be used to transmit one or more of the data signals to the at least one endpoint. For each control signal, at least one time and at least one set of frequencies selected from the frequency range to be used to transmit the control signal may be scheduled. At least one of the plurality of control signals and at least one of the plurality of data signals are scheduled to be transmitted simultaneously by the transceiver. The data signals and the control signals are transmitted to the plurality of endpoints.08-01-2013
20130195067DEVICES FOR SIGNALING AN ENHANCED PHYSICAL CONTROL FORMAT INDICATOR CHANNEL - An evolved Node B (eNB) for indicating a control format is described. The eNB includes a processor and instructions stored in memory that is in electronic communication with the processor. The eNB generates a first enhanced Control Format Indicator (eCFI) corresponding to a first enhanced Physical Control Format Indicator Channel (ePCFICH). The first eCFI at least partially indicates a first enhanced Physical Downlink Control Channel (ePDCCH) region. The eNB also loads the first eCFI into a first set of resource elements in a first slot. The eNB additionally sends the first eCFI in the first slot in a first subframe.08-01-2013
20130195068METHODS FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION - In a method for receiving control information, a transceiver decodes at least one set of decoding candidates, and then detects whether control information is present on the control channel based on the decoded at least one set of decoding candidates. In a method for transmitting control information, a transceiver selects a decoding candidate from a set of decoding candidates for transmitting control information on a control channel; and transmits to another transceiver, control information using at least one time-frequency control channel resource element corresponding to the selected decoding candidate.08-01-2013
20130195069SIGNALING MECHANISM FOR SUPPORTING FLEXIBLE PHYSICAL BROADCAST CHANNEL AND COMMON REFERENCE SIGNAL CONFIGURATIONS - A method, apparatus, system, and non-transitory computer readable medium are provided that can provide a signaling mechanism on a physical broadcast channel. The signaling mechanism generates system configuration information, and uses one or more bits within the physical broadcast channel to store system configuration information. The signaling mechanism further signals the system configuration information to devices within a cell of a communication system.08-01-2013
20130195070TIME AND FREQUENCY SYNCHRONIZATION FOR LTE-ADVANCED NEW CARRIER TYPE - A particular kind of component carrier that may be used as a secondary cell in an LTE system is a new type carrier that has reduced or eliminated legacy control signaling such as the omission of CRSs. Alternative techniques are described for performing timing and frequency synchronization in the downlink between an eNB and a UE when CRSs are not present in a component carrier. These techniques involve using either channel state information reference signals or UE-specific reference signals.08-01-2013
20130195071RADIO COMMUNICATION APPARATUS, RADIO COMMUNICATION SYSTEM, AND RADIO COMMUNICATION METHOD - Radio communication apparatus perform communication by using a plurality of frequency bands. The radio communication apparatus transmits to the radio communication apparatus by using a first frequency band a control message including identification information indicating a second frequency band different from the first frequency band during a random access procedure. The radio communication apparatus receives the control message from the radio communication apparatus by using the first frequency band and performs data communication by using the second frequency band indicated by the identification information included in the control message.08-01-2013
20120063411METHOD FOR ALLOCATING RADIO RESOURCES OF A PUCCH AND RADIO RESOURCE MANAGER - The present invention discloses method for allocating radio resources of a physical uplink control channel (PUCCH) and a radio resource manager, wherein the method includes: a radio resource manager generating a resource pool; the radio resource manager sorting PUCCH resources in the resource pool according to a generating sequence thereof, and making a pointer point to a first PUCCH resource; and the radio resource manager allocating a PUCCH resource pointed by the pointer currently to a terminal and then making the pointer point to a next PUCCH resource. The present invention has the advantage that it is unnessesary to perform a resource search at each allocation of resource, the time for searching resources is saved, the resource search is simplified, and the complexity of a system is reduced greatly.03-15-2012
20120063409SYSTEMS AND METHODS FOR UPLINK SIGNALLING - Methods, base stations and access terminals for uplink signalling are provided. Resource request channel characteristics such as location in time-frequency, sequence, time slot, are assigned to each access terminal to distinguish their resource requests from the resource requests of other access terminals. Access terminals make requests using a resource request on a resource request channel having the assigned characteristics. The base station can then determine which access terminal transmitted the resource request based on the resource request channel characteristics of the resource request channel upon which the resource request was received. The base station then transmits a response to the request which may for example be a new resource allocation, a default allocation or a renewal of a previous allocation.03-15-2012
20120300745APPARATUS AND METHOD FOR RECEIVING SIGNALS IN MULTI-CARRIER MULTIPLE ACCESS SYSTEMS - A method and apparatus for receiving signals in a multi-carrier multiple access system is provided. The method includes receiving signals from at least one base station each signal having a base station identifier, processing the signals to identify each base station by using the base station identifier, performing channel estimation using the processed signals, combining the processed signals using information obtained from the channel estimation and decoding the combined signals. The apparatus includes a serial-to-parallel converter, a Fast Fourier transformer, a parallel-to-serial converter, a despreading processor, a channel estimator, a signal combiner and a decoder.11-29-2012
20120087336MC-CDMA MULTIPLEXING IN AN ORTHOGONAL UPLINK - Techniques are provided to support multi-carrier code division multiple access (MC-CDMA) in an orthogonal uplink of a wireless communication system. A method of wireless multi-carrier communications comprises dividing sub-carriers on an uplink into non-overlapping groups, allocating a time-frequency block including a hopping duration and a non-overlapped group, respectively, assigning a different set of orthogonal codes to each user, spreading data (or pilot) symbols of each user over the allocated time-frequency block, wherein the data (or pilot) symbols of each user are spread using the different set of orthogonal codes assigned to each user, mapping each data (or pilot) symbol to a modulation symbol in the time-frequency block, generating an orthogonal waveform based on the mapped symbols, and transmitting the orthogonal waveform.04-12-2012
20130208695METHOD FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM, AND DEVICE THEREFOR - The present invention discloses a method for a terminal to transmit control information in a wireless communication system. The method includes encoding a plurality of pieces of control information and transmitting the plurality of encoded control information and data information through a data channel. During the encoding of the plurality of control information, a channel quality indicator (CQI) and a precoding matrix index (PMI) for an entire frequency band are encoded jointly or separately, and each piece of the plurality of pieces of encoded control information and the data information is mapped into a resource block of the data channel, and is then transmitted.08-15-2013

Patent applications in class Having both time and frequency assignment