Patent application number | Description | Published |
20080235314 | METHOD OF GENERATING RANDOM ACCESS PREAMBLES IN WIRELESS COMMUNICATION SYSTEM - A method of generating random access preambles includes receiving information on a source logical index and generating random access preambles in the order of increasing cyclic shift from root ZC sequences with the consecutive logical indexes from the beginning of the source logical index until a predetermined number of the random access preambles are found, wherein the consecutive logical indexes are mapped to root indexes of the root ZC sequences. | 09-25-2008 |
20090010312 | METHOD OF PERFORMING CELL SEARCH IN WIRELESS COMMUNICATION SYSTEM - A method of performing cell search includes receiving a primary synchronization signal (PSS) comprising a primary synchronization code (PSC), acquiring an unique identity from the PSS, receiving a secondary synchronization signal (SSS) which is associated with a cell identity group, the SSS comprising two secondary synchronization codes (SSCs) and acquiring a cell identity which is defined by the unique identity within the cell identity group, wherein the two SSCs are respectively scrambled by using two different scrambling codes. Detection performance on synchronization signals can be improved, and cell search can be performed more reliably. | 01-08-2009 |
20090168716 | METHOD FOR RESOURCE PARTITIONING WITH PREDEFINED PATTERN AND ADAPTIVE RESOURCE PARTITIONING METHOD - An adaptive resource partitioning method includes: selecting a predefined pattern-based partitioning method or an informed map-based partitioning method according to the number of channels used for resource allocation, data characteristics, and a channel environment variation, if the predefined pattern scheme is selected, selecting any of predefined patterns, partitioning distributed and localized resource allocation areas according to the selected pattern, and transmitting a pattern index of the selected pattern to a terminal, and if the informed map scheme is selected, partitioning distributed and localized resource allocation areas according to an arbitrary pattern, and transmitting bitmap control information indicating information of the partitioned areas to the terminal. So, it effectively obtains a diversity and a scheduling gain when distributed and localized resource allocations are simultaneously used, such that it increases flexibility of resource allocation, increases an available data transfer rate, and reduces an amount of necessary control information. | 07-02-2009 |
20090175243 | METHOD FOR TRANSMITTING AND RECEIVING SIGNALS USING MULTI-BAND RADIO FREQUENCIES - A method for transmitting and receiving signals using multi-band Radio Frequencies (RFs) is provided. The method performs channel coding on an information unit of a specific layer above a physical layer to produce a specific number of codewords and maps the generated specific number of codewords to a plurality of frequency allocation bands managed by one specific layer, and then transmits the mapped signal through each of the plurality of frequency allocation bands. Each of the plurality of frequency allocation bands managed by the one specific layer has a band size for allocation for a specific service according to a predetermined frequency policy. When the generated specific number of codewords is mapped to the plurality of frequency allocation bands, each of the specific number of codewords is mapped to at least one of the plurality of frequency allocation bands. A frequency allocation band used for transmission of each codeword when the codeword is retransmitted may be set to be different from that when it is initially transmitted. | 07-09-2009 |
20090201877 | RANGING 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 |
20090213723 | METHOD FOR UPLINK TRANSMISSION IN OFDM(A) SYSTEM - A method for uplink transmission in an OFDMA system is provided. The subcarrier transmission method includes arranging 4 pilot REs at different positions of a frequency axis in a basic unit when the basic unit includes 4 subcarriers on the frequency axis and 6 OFDM(A) symbols in a time axis, arranging data REs at remaining positions of the basic unit, and transmitting the basic unit to a receiving end. | 08-27-2009 |
20090215499 | METHOD OF COMMUNICATION USING FRAME - A device and method for communicating by a mobile communication terminal in communication with a base station. The method according to an embodiment includes exchanging a frame of data with the base station. The frame of data includes a) a plurality of first subframes each having a first number of orthogonal frequency division multiple access (OFDMA) symbols, and b) a plurality of second subframes each having a second number of orthogonal frequency division multiple access (OFDMA) symbols different from the first number. | 08-27-2009 |
20090219842 | METHOD OF COMMUNICATION USING FRAME - A device and method for communicating by a mobile communication terminal in communication with a base station. The method according to an embodiment includes exchanging a frame of data with the base station. The frame of data includes a) a plurality of first subframes each having a first number of orthogonal frequency division multiple access (OFDMA) symbols, and b) a plurality of second subframes each having a second number of orthogonal frequency division multiple access (OFDMA) symbols different from the first number. A first and a last subframe each includes one of the plurality of first subframes. | 09-03-2009 |
20090219875 | FRAME FOR FLEXIBLY SUPPORTING HETEROGENEOUS MODES AND TDD/FDD MODES, AND METHOD FOR TRANSMITTING SIGNALS USING THE SAME - A frame structure for flexibly supporting heterogeneous modes and TDD/FDD modes and a method for transmitting signals using the same are disclosed. A method for transmitting a signal using a preset frame structure in a communication system which supports a TDD mode and an FDD mode and supports two or more different communication schemes includes constructing a signal in units of the frames and transmitting the signal, wherein at least one of determination of a ratio of a DL region and a UL region within the frame when the communication system communicates according to the TDD mode allocation of a time region according to the modes of the communication schemes when the communication system communicates according to a heterogeneous mode supporting the two or more communication schemes and setting of a construction scheme of sub-frames within the frame in units of a prescribed number of the frames or super-frames, is performed on the basis of a specific unit comprised of n OFDM symbols corresponding to a multiple of a UL subchannelization unit. | 09-03-2009 |
20090219910 | METHOD FOR TRANSMITTING AND RECEIVING SIGNALS USING MULTI-BAND RADIO FREQUENCIES - A method for transmitting and receiving signals using multi-band Radio Frequencies (RFs) is provided. The method transmits an information unit of a specific layer above a physical layer through a plurality of frequency allocation bands managed by the specific layer and transmits control information identifying each of the plurality of frequency allocation bands. The control information identifying each of the plurality of frequency allocation bands includes a second ID into which a first ID has been converted, the first ID identifying each of the plurality of frequency allocation bands in the physical layer, the second ID identifying each of the plurality of frequency allocation bands managed by the specific layer in the specific layer. To accomplish this, a timing offset is applied to the entirety of a frame or to a preamble (synchronous channel) so that the timing offset is used as the ID. Applying a timing offset to the entirety of a frame or to a preamble (synchronous channel) can achieve an advantage of PAPR reduction. | 09-03-2009 |
20090232163 | METHOD FOR GENERATING SUBFRAME INCLUDING RESOURCE DISTRIBUTION INFORMATION - A method for generating a subframe including resource distribution information is disclosed. The method for generating a subframe includes arranging resource allocation information in a subframe by sequentially allocating a localized permutation and a distributed permutation, and arranging a subframe control header including a resource unit index in a predetermined location by a system parameter, wherein the resource unit index indicates a frequency resource location of the resource allocation information. When both the localized permutation and the distributed permutation are used, a resource distribution method is transmitted to a user equipment. Therefore, an effect of the distributed permutation can be maximized without a great influence on the performance of the localized permutation, and a problem of decoding failure or latency can be prevented. | 09-17-2009 |
20090252260 | METHOD FOR GENERATING A REFERENCE SIGNAL SEQUENCE USING GROUPING - Method for generating reference signal sequence using grouping is explained. In this method, base sequences are grouped such that each group contains at least one base sequence of each length, so UE(s) can use various length sequences as a reference signal. And in this method, inter cell interference caused by using various length sequence as a reference signal sequence can be minimized by grouping sequences having the high cross correlation relation. | 10-08-2009 |
20090285168 | METHOD FOR DESIGNING MINI RESOURCE UNIT AND TRANSMISSION FOR A DISTRIBUTED RESOURCE UNIT IN CONSIDERATION OF SPACE FREQUENCY BLOCK CODE - A method and device for wirelessly communicating between a mobile communication terminal and a base station, including exchanging a physical resource unit (PRU) between the base station and the mobile communication terminal, the PRU having a plurality of OFDMA symbols. Each 1 | 11-19-2009 |
20100020890 | WIRELESS COMMUNICATION SYSTEM WITH MULTIPLE TRANSMISSION ANTENNAS USING PILOT SUBCARRIER ALLOCATION - A method of allocating pilot subcarriers in a resource block for a wideband wireless mobile communication system with multiple transmission antennas using orthogonal frequency division multiplexing (OFDM) modulation is disclosed. In this method, pilot subcarriers are allocated to the resource block comprised of five (5) or seven (7) OFDM symbols so that only four (4) OFDM symbols of the resource block are allocated for pilot subcarriers. | 01-28-2010 |
20100034165 | SEQUENCE 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 |
20100046460 | METHOD OF TRANSMITTING UPLINK CONTROL SIGNALS IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting uplink control signals in a wireless communication system includes preparing a ACK/NACK resource for transmitting the ACK/NACK signal for HARQ of downlink data on an uplink control channel, preparing a scheduling request resource for transmitting a scheduling request and the ACK/NACK signal on the uplink control channel in one subframe, and transmitting the ACK/NACK signal on the uplink control channel configured by the scheduling request resource for the positive transmission of the scheduling request and transmitting the ACK/NACK signal on the uplink control channel configured by the ACK/NACK resource for negative transmission of the scheduling request. | 02-25-2010 |
20100099408 | Method of performing cell search in wireless communication system - A method of performing cell search includes receiving a primary synchronization signal (PSS) comprising a primary synchronization code (PSC), and receiving a secondary synchronization signal (SSS) comprising a first secondary synchronization code (SSC) and a second SSC. The first SSC and the second SSC are respectively scrambled by using a first scrambling code and a second scrambling code, and the first scrambling code and the second scrambling code are associated with the PSC. Detection performance on synchronization signals can be improved, and cell search can be performed more reliably. | 04-22-2010 |
20100099409 | Method of performing cell search in wireless communucation system - A method of performing cell search includes receiving a primary synchronization signal (PSS) comprising a primary synchronization code (PSC) and receiving a secondary synchronization signal (SSS) comprising a first secondary synchronization code (SSC) and a second SSC, wherein the SSS includes a first SSS and a second SSS, the first SSC and the second SSC are arranged in that order in the first SSS, and the second SSC and the first SSC are arranged in that order in the second SSS. Detection performance on synchronization signals can be improved, and cell search can be performed more reliably. | 04-22-2010 |
20100103894 | METHOD AND APPARATUS FOR MAPPING RESOURCE UNIT IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for mapping a resource unit in a wireless communication system is provided. The method includes obtaining a frequency partition (FP) count (FPCT), an size of FPi (FPS) for i>0, and subband (SB) count of FPi (FPSC) for i>0 (where FPi is an i | 04-29-2010 |
20100103895 | METHOD AND APPARATUS FOR MAPPING RESOURCE UNIT IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for mapping a resource unit in a wireless communication system is provided. The method includes obtaining L | 04-29-2010 |
20100103896 | METHOD AND APPARATUS OF SUBCHANNELIZATION IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus of subchannelization is provided. The method includes receiving information indicating the number of physical resource unit (PRU) sets allocated to a subband from a base station, and mapping PRUs of a physical region to a subband PRU or a miniband PRU in a granularity of the PRU set according to the received information, wherein the subband PRU is allocated with at least one subband comprising a first number of contiguous PRUs, the miniband PRU is allocated with at least one miniband comprising a second number of PRUs, and the PRU set comprises PRUs whose number is equal to the number of PRUs included in one subband. Subchannelization can be effectively achieved while maintaining a frequency selective scheduling gain and a frequency diversity gain to the maximum extent possible. | 04-29-2010 |
20100110874 | METHOD AND APPARATUS FOR TRANSMITTING SIGNAL IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting a signal in a wireless communication system are disclosed. The signal transmission method includes grouping a plurality of subcarriers included in a first Orthogonal Frequency Division Multiple Access (OFDMA) symbol within distributed resources into a plurality of subcarrier groups, each subcarrier group having a predetermined number of subcarriers, distributing the plurality of subcarrier groups of the first OFDMA symbol according to a first permutation pattern, transmitting data in the distributed subcarrier groups of the first OFDMA symbol, grouping a plurality of subcarriers included in a second OFDMA symbol within the distributed resources into a plurality of subcarrier groups, each subcarrier group having a predetermined number of subcarriers, distributing the plurality of subcarrier groups of the second OFDMA symbol according to a second permutation pattern, and transmitting data in the distributed subcarrier groups of the second OFDMA symbol. | 05-06-2010 |
20100111014 | METHOD AND APPARATUS FOR TRANSMITTING SIGNAL IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting a signal in a wireless communication system are disclosed. The signal transmission method includes generating encoded packet data for transmission on an uplink, setting distributed resources in a plurality of contiguous subframes, and transmitting at least part of the encoded packet data through the distributed resources to a base station. The distributed resources are interleaved on a subframe basis according to a permutation pattern and the permutation pattern is different for each subframe. | 05-06-2010 |
20100118799 | METHOD FOR SELECTING RACH FREAMBLE SEQUENCE FOR HIGH-SPEED MODE AND LOW-SPEED MODE - A method for selecting a RACH preamble sequence for a high-speed mode and a low-speed mode is disclosed. In the case of acquiring sequence-type information to be used by a specific UE contained in a high-mobility region, a signaling reanalysis method under a general circular shift condition is disclosed, and a method for acquiring sequence-type information via the signaling using the sequence set configured by a restricted circular shift condition is also disclosed. Finally, a method for constructing a sequence set is disclosed. | 05-13-2010 |
20100118828 | Method 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 |
20100135360 | METHOD OF TRANSMITTING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting a reference signal in a wireless communication system includes generating a frequency-do-main reference signal by performing discrete Fourier transform (DFT) on a time-domain reference signal, generating a transmit signal by performing inverse fast Fourier transform (IFFT) on the frequency-domain reference signal and transmitting the transmit signal. | 06-03-2010 |
20100136931 | METHOD FOR TRANSMITTING AND RECEIVING ADDITIONAL CONTROL SIGNALS - A method for transmitting/receiving an additional control signal without any loss of bandwidth and power in an original Tx signal is disclosed. If the additional control signal is transmitted via the Tx signal composed of at least one of data and control signals, at least one of the amplitude and phase of the Tx signal of the time- and frequency-resource domain is modulated according to the additional control signal to be transmitted. The modulated Tx signal is transmitted to the receiver, so that the additional control signal can be transmitted irrespective of the original Tx signal. According to a modulation status of at least one of an amplitude and a phase of the Rx signal contained in the time- and frequency-resource domain, the additional control signal can be acquired. | 06-03-2010 |
20100165935 | METHOD OF MAPPING RESOURCE UNIT IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus of mapping a resource unit is provided. Physical resource units (PRUs) are divided into a plurality of PRU sets. The PRUs are mapped to a subband PRU or a miniband PRU in a granularity of the PRU set. The mapping is based on the greatest common divisor of the maximum number of PRU sets. The resource unit can be effectively mapped while maximizing a frequency diversity gain of a subband PRU and a miniband PRU. | 07-01-2010 |
20100177727 | METHOD OF TRANSMITTING RECEIVING A DATA IN A WIRELESS COMMUNICATION SYSTEM - A method of transmitting and receiving data in a wireless communication system is disclosed. According to an embodiment of the present invention, a base station (BS) transmits downlink data to a first mobile station supporting a first system via a first zone of a frame and transmitting downlink data to a second mobile station supporting a second system via a second zone located behind the first zone by a frame offset on a time axis, wherein the first zone includes the odd number of OFDM symbols and wherein the frame offset is an offset between a start point of a frame for the first system and a start point of a frame for the second system. | 07-15-2010 |
20100177804 | METHOD OF TRANSMITTING CONTROL SIGNAL IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting a control signal in a wireless communication system includes allocating a first sequence to spread a first control signal in a radio resource, allocating a second sequence to spread a second control signal in the radio resource, selecting one of the first control signal and the second control signal, generating a spread control signal by spreading the selected control signal, and transmitting the spread control signal in the radio resource, wherein the first sequence and the second sequence use different cyclic shifts of a base sequence. | 07-15-2010 |
20100208594 | METHOD FOR INSERTING PARITY TO FRAME CONTROL HEADER - A method for inserting parity into an FCH is disclosed. A method for inserting parity into a frame control header includes channel-encoding, by an additional channel encoder, a frame control header bit applied to a legacy encoder, and generating an additional codeword, and mapping the codeword generated by the legacy encoder and the additional channel encoder subcarrier mapping codeword to subcarriers. This method inserts parity into the FCH, and defines a new FCH, such that it extends an FCH coverage simultaneously while maintaining a compatibility with a legacy system. Also, it may add additional energy to a legacy FCH or may give a coding gain to the same legacy FCH, such that it can extend information transferable using reserved bits of the FCH. | 08-19-2010 |
20100208685 | METHOD OF CONTROLLING UPLINK POWER IN WIRELESS COMMUNICATION SYSTEM - A method of controlling uplink power in a wireless communication system includes receiving a power control offset with respect to a data burst including user data from a base station, receiving a power control offset with respect to a control burst including control information from the base station, and controlling transmission power of the data burst and transmission power of the control burst according to the power control offset with respect to the data burst and the power control offset with respect to the control burst. | 08-19-2010 |
20100226290 | METHOD FOR COMMUNICATING DATA BETWEEN MOBILE STATION AND BASE STATION, AND MOBILE COMMUNICATION TERMINAL THEREOF - A method for transmitting and receiving data by a mobile station (MS), a method for transmitting and receiving data by a base station (BS), and a mobile communication terminal are provided. The method for transmitting and receiving data by an MS includes generating an uplink subframe by placing an uplink control channel so as to have a margin with a time allocated to a MAP of a downlink subframe and transmitting the uplink subframe to a BS. A new frame structure compatible with a full duplex FDD MS is applied in a mobile communication system. | 09-09-2010 |
20100254343 | METHOD 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 |
20100260164 | METHOD FOR TRANSMITTING DATA IN WIRELESS COMMUNICATION SYSTEM - A method for transmitting data in a wireless communication system is provided. The method includes: transmitting first data through a radio resource allocated in a unit of a default transmission time interval (TTI) including at least one sub-frame in a frame including a plurality of sub-frames consisting of a plurality of orthogonal frequency division multiplexing (OFDM) symbols; and transmitting second data through a radio resource allocated in a unit of a modified TTI obtained by changing the number of sub-frames included in the default TTI in the frame. | 10-14-2010 |
20100278168 | METHOD FOR TRANSMITTING CONTROL SIGNAL - There is provided a method of enabling a user equipment to transmit a control signal to a base station. The method includes allocating a control signal to a control region on a subframe comprising the control region for the control signal and a data region for user data, wherein different frequency bands within the control region are allocated to different user equipments, and transmitting the subframe in uplink direction. A control signal can be robustly transmitted under variance of channel condition. | 11-04-2010 |
20100284477 | METHOD FOR TRANSMITTING SIGNAL IN MULTIPLE ANTENNA SYSTEM - A signal transmission method in a multiple antenna system is described. The signal transmission method includes, upon receiving channel state information from a receiving end, estimating a channel according to the channel state information, determining a precoding matrix according to the estimated channel and modifying the signal of the transmitting end using the precoding matrix in a process of mapping a symbol of the signal to a subcarrier, and transmitting the signal to the receiving end. According to the present invention, pre-equalization of a transmission signal can cause a receiving end to perform coherent combination, reduce pilot density by decreasing unnecessary pilots, and reduce interference within a cell or between cells. | 11-11-2010 |
20100296472 | METHOD FOR TRANSMITTING UE-TRIGGERED CHANNEL STATUS INFORMATION - A method for transmitting a user equipment (UE)-triggered channel status information (CSI) is disclosed. A UE transmits a preamble to an eNode B (eNB) through a random access channel (RACH) or a CSI RACH. The UE receives a response allocating a CSI feedback resource or allocating a resource for negotiation from the eNB. The UE transmits the CSI and a UE ID, or only the CSI to the eNB through a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH). | 11-25-2010 |
20100298031 | METHOD FOR TRANSMITTING AND RECEIVING SIGNALS USING MULTI-BAND RADIO FREQUENCIES - A method for transmitting an information unit of a specific layer above a physical layer through a plurality of frequency allocation bands managed by the specific layer and transmitting control information identifying each of the plurality of frequency allocation bands. The control information includes a second ID into which a first ID has been converted, the first ID identifying each of the plurality of frequency allocation bands in the physical layer, the second ID identifying each of the plurality of frequency allocation bands managed by the specific layer in the specific layer. To accomplish this, a timing offset is applied to the entirety of a frame or to a preamble (synchronous channel) so that the timing offset is used as the ID. Applying a timing offset to the entirety of a frame or to a preamble (synchronous channel) can achieve an advantage of PAPR reduction. | 11-25-2010 |
20100329384 | METHOD OF TRANSMITTING A WIDEBAND FRAME - A method of transmitting a wideband frame for a wideband system having backward compatibility with a narrowband system includes configuring a wideband carrier by using a set of base carriers, wherein a bandwidth of the base carriers corresponds to a bandwidth of the narrowband system and any one of center frequencies of the base carriers is the same as a center frequency of the narrowband system, and allocating all or some of guard subcarriers between the two adjacent base carriers to a traffic channel when a center frequency spacing between two adjacent base carriers is an integer multiple of a subcarrier spacing. Accordingly, the method can be used to support backward compatibility with the narrowband system. Further, the method can be equally used when the narrowband system co-exists with the wideband system in a guard band defined in a narrowband of a new system. | 12-30-2010 |
20100331006 | DOWNLINK LOCALIZED AND DISTRIBUTED MULTIPLEXING IN A FREQUENCY DIVISION MULTIPLEXING MANNER - A method of signaling system configuration information in a wireless mobile cellular communication system is disclosed. The method comprises transmitting the system configuration information at every predetermined period. In this case, each downlink subframe is divided into a plurality of frequency partitions, and subcarriers from at least two of the plurality of frequency partitions are allocated to a first mobile station using distributed resource allocation. | 12-30-2010 |
20110007699 | METHOD AND APPARATUS OF ALLOCATING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A method of allocating control information in a wireless communication system is provided. The method includes: allocating essential control information of a first system to a first sub-frame in a frame including a plurality of sub-frames each of which comprises a plurality of orthogonal frequency-division multiplexing (OFDM) symbols; and allocating essential control information of a second system to an n | 01-13-2011 |
20110007831 | FRAME TRANSMISSION METHOD IN A WIRELESS COMMUNICATION SYSTEM - A frame transmission method in a wireless communication system comprises setting a primary frame including a multiplicity of primary sub-frames, setting a secondary frame including a multiplicity of secondary sub-frames, and transmitting the secondary frame, wherein each of the primary sub-frames and each of the secondary sub-frames consists of multiple OFDM symbols, the OFDM symbols included in the primary sub-frame and the OFDM symbols included in the secondary sub-frame have different CP (Cyclic Prefix) lengths from one another, and the primary sub-frames and the secondary sub-frames are all equal in length. It is an advantage of the invention that frames consisting of OFDM symbols with different CP lengths can coexist together. Moreover, when each of the sub-frames within one frame consists of multiple OFDM symbols with different CP lengths, even the sub-frames can coexist together. | 01-13-2011 |
20110013715 | METHOD FOR SETTING CYCLIC SHIFT CONSIDERING FREQUENCY OFFSET - A method for establishing a cyclic shift sequence to provide against the frequency offset is disclosed. The method calculates a distance between a channel response position of the sequence and an alias channel response position caused by a frequency offset, calculates the number of cyclic shifts per group according to the calculated distance, and establishes the cyclic shift (CS)-applying interval. This method easily establishes a cyclic shift (CS) interval at a specific location having no overlapping by considering a channel response of a reception (Rx) sequence and an alias location of this reception (Rx) sequence, although a reception (Rx) signal is shifted by a channel delay spreading or a propagation delay irrespective of categories of a domain generating a sequence, so that it can greatly reduce the number of the detection errors and the false alarm rate. And, if a sequence of the cyclic shift (CS) is allocated to a cell having a frequency offset of more than a predetermined level, the present invention can minimize the influence of a frequency offset on a high-mobility cell. | 01-20-2011 |
20110019597 | METHOD FOR ALLOCATING RADIO RESOURCES IN FDD FRAME - A method of allocating a radio resource in a frequency division duplex (FDD) frame in which a downlink frame and an uplink frame are divided in a frequency domain in a wireless communication system includes allocating a downlink resource region for a first system in the downlink frame, and allocating an uplink resource region for the first system to the uplink frame such that the uplink resource region does not temporally overlap with the downlink resource region for the first system, wherein a resource region except for the downlink resource region for the first system is allocated to a downlink resource region for a second system in the downlink frame, and a resource region except for the uplink resource region for the first system is allocated to an uplink resource region for the second system in the uplink frame. When a half-duplex FDD (H-FDD)-type user equipment is supported in a frequency division duplex (FDD) frame supporting heterogeneous systems, radio resources can be effectively utilized by minimizing waste of unnecessary radio resources. | 01-27-2011 |
20110032853 | METHOD AND APPARATUS FOR COMMUNICATION IN A TDD-BASED WIRELESS COMMUNICATION SYSTEM - Disclosed is a method and an apparatus for communication in a TDD (Time Division Duplex) based wireless communication system. The present invention involves setting a first frame comprising a plurality of consecutive downlink subframes and a plurality of consecutive uplink subframes. The start point for the first uplink subframe in the plurality of consecutive uplink subframes, is located at a switching point in a second frame used by another system. | 02-10-2011 |
20110044268 | METHOD FOR DETERMINING CELL IDENTITY IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR - A method of determining a cell identity in a wireless communication system is disclosed. The present invention includes the steps of obtaining a segment ID and a sequence index from an SA-preamble (secondary advanced preamble) sequence received from a base station and determining the cell identity using the segment ID and the sequence index. In this case, the cell identity corresponds to one SA-preamble sequence and a cell identity adjacent to the cell identity corresponds to an SA-preamble sequence having a complex conjugate relation of the one SA-preamble sequence. | 02-24-2011 |
20110051621 | METHOD OF TRANSMITTING CONTROL SIGNAL IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting a control signal in a wireless communication system includes allocating a first sequence to spread a first control signal in a radio resource, allocating a second sequence to spread a second control signal in the radio resource, selecting one of the first control signal and the second control signal, generating a spread control signal by spreading the selected control signal, and transmitting the spread control signal in the radio resource, wherein the first sequence and the second sequence use different cyclic shifts of a base sequence. | 03-03-2011 |
20110051680 | METHOD OF TRANSMITTING UPLINK CONTROL SIGNALS IN WIRELESS COMMUNICATION SYSTEM - A method and device for transmitting uplink control signals in a wireless communication system, the method including: reserving a preassigned scheduling request (SR) physical uplink control channel (PUCCH) resource used for transmission of a SR; determining a frequency domain sequence and an orthogonal sequence based on the preassigned SR PUCCH resource; spreading an ACK/NACK for Hybrid Automatic Repeat Request (HARQ) with the frequency domain sequence and the orthogonal sequence to generate a mapped sequence; and transmitting the mapped sequence | 03-03-2011 |
20110058527 | METHOD AND DEVICE FOR ALLOCATING A BROADCAST CHANNEL IN A WIRELESS MOBILE COMMUNICATION SYSTEM - A method for receiving a superframe header at a mobile station in a wireless mobile communication system is disclosed. The method comprises receiving a sub-frame including the superframe header and a first data channel and decoding the received superframe header. Herein, the superframe header is located within a predetermined physical frequency band and the predetermined physical frequency band includes a synchronization channel. | 03-10-2011 |
20110070821 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING SIGNAL IN RELAY STATION - A method of a Relay Station (RS) transmitting and receiving a signal in a wireless communication system including the RS, comprising receiving frame configuration information about an RS frame from a Base Station (BS), configuring a downlink (DL) access zone in which a signal is transmitted to a relay Mobile Station (MS) connected to the RS and a DL relay zone in which a signal is received from the BS in the RS frame on the basis of the frame configuration information, comparing a time necessary to switch an operation from the DL access zone to the DL relay zone and a propagation delay time taken to receive the signal from the BS, configuring some symbols of the DL access zone or the DL relay zone as a transition time according to a result of the comparison, transmitting the signal to the relay MS in the DL access zone, and receiving the signal from the BS in the DL relay zone. | 03-24-2011 |
20110086645 | METHOD FOR ALLOCATING PREAMBLE SEQUENCE SUBBLOCK FOR SUPPORTING IRREGULAR SYSTEM BANDWIDTH IN WIRELESS COMMUNICATION SYSTEM AND AN APPARATUS THEREFOR - A method for transmitting a secondary advanced-preamble (SA-preamble) from a base station in a wireless communication system is disclosed, wherein the SA-preamble supporting an irregular system bandwidth. The method comprises allocating a plurality of sequence subblocks corresponding to a regular system bandwidth; configuring the SA-preamble by dropping one or more sequence subblock pairs among the plurality of sequence subblocks symmetrically in base of a DC component; and transmitting the SA-preamble to a mobile station, wherein a bandwidth of the SA-preamble is same as or narrower than the irregular system bandwidth. | 04-14-2011 |
20110090856 | METHOD OF EFFICIENT RANGING PROCEDURE CONSIDERING RANGING PURPOSE IN BROADBAND WIRELESS ACCESS SYSTEM - A broadband wireless access system and, more particularly, a method for a mobile station and a base station to perform an efficient ranging procedure considering a ranging purpose and a device for performing the same are disclosed herein. A method of a mobile station for performing ranging in a broadband wireless access system, the method includes the steps of transmitting a first ranging preamble code for requesting ranging to a base station through a first ranging opportunity of a first frame, and, when a first message is received from the base station before a timer indicating a limited time point is expired, wherein the first message including a response to the first ranging preamble code is transmitted during the limited time point, determining whether or not the ranging request is successfully made by using the first message. | 04-21-2011 |
20110090997 | METHOD FOR TRANSMITTING SYNCHRONIZATION CHANNEL USING MULTI-ANTENNA - A method for transmitting a synchronization channel using multi-antenna is disclosed. In a method for transmitting a synchronization channel for using a synchronization channel as a phase reference when decoding a broadcast channel, the method includes using a pre-decided shift value for each antenna, wherein the shift value is pre-decided with a user equipment, so as to apply circular shifts to sequences of the synchronization channel, and transmitting the sequences having the circular shifts applied thereto from a base station to the user equipment. Herein, space frequency/time block codes (SFBC/STBC) may be applied to the broadcast channel. In performing time/frequency domain synchronization in the synchronization channel, regardless of the number of transmission antennae used by the base station when transmitting signals, the synchronization process may be performed. Also, multi-antenna gain may be obtained when transmitting the synchronization channel. Furthermore, channel estimation may be performed for each antenna, and by applying transmission diversity methods to the BCH/control channel/data channel and so on, the performance of the present invention may also be enhanced. | 04-21-2011 |
20110096715 | METHOD FOR TRANSMITTING A SIGNAL USING A RELAY STATION IN A WIRELESS COMMUNICATION SYSTEM - A method of transmitting a signal using a relay station is disclosed. In a wireless communication system, the present invention includes the steps of enabling the relay station to receive the signal via a relay interval in a downlink interval using a first wireless communication scheme and a second wireless communication scheme in common from a base station and enabling the relay station to transmit the received signal to a first terminal using the first wireless communications scheme via a first downlink interval in the downlink interval or to a second terminal using the second wireless communication scheme via a second downlink interval. | 04-28-2011 |
20110103325 | METHOD FOR MAPPING RANGING CHANNELS AND OPPORTUNITIES IN A BROADBAND WIRELESS ACCESS SYSTEM - A method for efficiently updating system information of a base station at a relay station of a broadband wireless access system and an apparatus for performing the method are disclosed. The method for updating system information of an advanced base station (ABS) at an advanced relay station (ARS) of a broadband wireless access system comprises receiving a first message, which includes changed information of the system information of the base station, from the base station; transmitting a second message for acknowledgment of the first message to the base station; and performing application for the changed information. | 05-05-2011 |
20110103506 | APPARATUS FOR TRANSMITTING A SYNCHRONOUS SIGNAL IN A MULTI-ANTENNA SYSTEM - An apparatus for transmitting a synchronization signal using a plurality of transmit (Tx) antennas is provided. The apparatus includes a synchronization signal generator for generating a synchronization signal used for tracking timing or frequency synchronization, a transmission processor for allocating different subcarriers to a plurality of Tx antennas without overlapping, mapping the synchronization signal to the subcarriers, and generating an orthogonal frequency division multiplexing (OFDM) symbol by performing inverse fast Fourier transformation (IFFT), a control signal coupler for controlling codes as a resource not to overlap among the plurality of Tx antennas, and the plurality of Tx antennas for transmitting the OFDM symbol. | 05-05-2011 |
20110105056 | METHOD AND APPARATUS FOR TRANSMITTING SEQUENCE IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting a sequence in a wireless communication system is provided. A transmitter generates a block sequence comprising a first sub-block sequence and a second sub-block sequence, generates a phase modulated block sequence by performing phase modulation on the block sequence, maps the phase modulated block sequence to a plurality of sub-blocks, and transmits the phase modulated block sequence mapped to the plurality of sub-blocks. | 05-05-2011 |
20110110257 | UPLINK TRANSMISSION POWER CONTROL METHOD IN A WIRELESS COMMUNICATION SYSTEM - Provided is an uplink transmission power control method in a wireless communication system. Said method includes preferentially determining the transmission power of an uplink control channel, and determining the transmission power of an uplink data channel within the difference between the maximum transmittable power of a terminal and the transmission power of the uplink control channel, wherein the transmission of the uplink control signal through the uplink control channel and the transmission of the uplink data through the uplink data channel are performed at the same time using wireless resources different from one another. The present invention preferentially allocates the transmission power required for the transmission of an uplink control channel, and allocates residual power to an uplink data channel, thereby improving the effectiveness of power allocation when an uplink control signal and an uplink data signal are transmitted at the same time using physical resources different from one another. | 05-12-2011 |
20110116408 | SUBSTRATE CONVEYING DEVICE - A method for controlling uplink transmission power of a mobile station (MS) in a wireless communication system is provided. The method includes: obtaining a plurality of interference indicators indicating uplink interference from a base station (BS), wherein a full bandwidth is divided into a plurality of frequency partitions, and the plurality of interference indicators respectively correspond to the plurality of frequency partitions; determining an uplink transmission power level of a frequency partition corresponding to an interference indicator selected from the plurality of interference indicators on the basis of the selected interference indicator; and controlling the uplink transmission power on the basis of the uplink transmission power level. Accordingly, inter-cell interference can be reduced, and reliability of an MS located in a cell edge can be improved. | 05-19-2011 |
20110134759 | METHOD AND APPARATUS FOR CONTROLLING UPLINK POWER IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for uplink power control performed by a mobile station (MS) in a wireless communication system is provided. The method includes dividing a frequency band for uplink transmission into a plurality of frequency partitions, obtaining a path loss weight for each of the plurality of frequency partitions, and determining transmit power for each of the frequency partitions on the basis of the path loss weight. Overall system performance can be improved. | 06-09-2011 |
20110134968 | METHOD AND APPARATUS FOR INFORMATION TRANSMISSION IN A RADIO COMMUNICATION SYSTEM - The present invention relates to a method and an apparatus for information transmission in a radio communication system. The method includes the steps of creating a first symbol and a second symbol relevant to information, creating a first transmission vector and a second transmission vector on the basis of Alamouti code from the first symbol and the second symbol, and transmitting the first transmission vector via a first antenna and transmitting the second transmission vector via a second antenna. | 06-09-2011 |
20110151870 | METHOD FOR PARTITIONING CELL IDENTITIES ACCORDING TO CELL TYPE IN WIRELESS COMMUNICATION SYSTEM AND AN APPARATUS THEREFOR - A method of transmitting a cell type information, which is transmitted by a base station in a wireless communication system, is disclosed. The present invention includes broadcasting a boundary point information (Z) between a cell identity of a public ABS (advanced base station) and a cell identity of a private ABS via an S-SFH SP3 (secondary-super frame header subpacket3). In this case, the boundary point information (Z) is a range information of cell identity partitions partitioned by granularity of 10 sequences or 20 sequences per segment and a total number of the cell identity partitions is 16. Further, the range information of cell identity partitions includes information that all cell identities are cell identities of the private ABS or information that all cell identities are cell identities of the public ABS except for cell identities of a macro ABS. | 06-23-2011 |
20110164547 | METHOD AND APPARATUS FOR TRANSMITTING MBS DATA IN WIRELESS COMMUNICATION SYSTEM USING FRACTIONAL FREQUENCY REUSE - Provided are a method and an apparatus for transmitting multicast broadcast service (MBS) data in a wireless communication system using fractional frequency reuse (FFR). The method comprises: allocating, to a common network zone, part or whole of a frequency partition where FRF (frequency reuse factor) is 1, from among a plurality of frequency partitions; and transmitting MBS data in the common network zone. | 07-07-2011 |
20110164548 | METHOD AND APPARATUS FOR TRANSMITTING DATA IN A WIRELESS COMMUNICATION SYSTEM - A data transmission method and apparatus in a wireless communication system is provided. The data transmission method include dividing a multicast broadcast single frequency network (MBSFN) zone including a plurality of cells into at least one sub-zone including at least one cell, enabling a plurality of cells belonging to the MBSFN zone to transmit first multicast broadcast service (MBS) data, and enabling the cell belonging to the at least one sub-zone to transmit sub-zone data superposed with the first MBS data, wherein the sub-zone data is second MBS data. | 07-07-2011 |
20110194529 | RANGING BY MOBILE STATION IN LEGACY SUPPORT MODE - Ranging by a mobile station in a legacy support mode is disclosed. According to embodiments of the present invention, S-SFH information transmitted by a base station in a system operating in FDM based uplink mixed mode is configured in a manner different from that of the FDM based uplink mixed mode. And, a mobile station performs a ranging by interpreting S-SFH differently according to a presence or non-presence of the mixed mode. Therefore, the present invention efficiently manages the ranging of the mobile station and reduces unnecessary signaling overhead. | 08-11-2011 |
20110200030 | METHOD FOR UPLINK TRANSMISSION IN OFDM(A) SYSTEM - A method for uplink transmission in an OFDMA system is provided. The subcarrier transmission method includes arranging 4 pilot REs at different positions of a frequency axis in a basic unit when the basic unit includes 4 subcarriers on the frequency axis and | 08-18-2011 |
20110205994 | METHOD AND APPARATUS FOR DATA TRANSMISSION USING A PLURALITY OF RESOURCES IN A MULTIPLE ANTENNA SYSTEM - A method and apparatus are provided for data transmission using a plurality of resources in a multiple antenna system. An m (m>1) number of bits from each encoded bit are mapped onto a resource to form a plurality of modulation symbols. With respect to said plurality of modulation symbols, spatial processing is performed according to a plurality of resources and a plurality of antennae to generate a plurality of transmission symbols. Each of said plurality of transmission symbols is transmitted via each of the corresponding multiple antennae. | 08-25-2011 |
20110222393 | METHOD OF TRANSMITTING CONTROL SIGNALS IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting control signals in a wireless communication system includes multiplexing a first control signal with a second control signal in a slot, the slot comprising a plurality of orthogonal frequency division multiplexing (OFDM) symbols in time domain, the plurality of OFDM symbols being divided into a plurality of data OFDM symbols and a plurality of reference signal (RS) OFDM symbols, wherein the first control signal is mapped to the plurality of data OFDM symbols after the first control signal is spread by a base sequence in the frequency domain, the RS is mapped to the plurality of RS OFDM symbols, the second control signal is mapped to at least one of the plurality of RS OFDM symbols, and transmitting the first control signal and the second control signal in the slot. | 09-15-2011 |
20110222507 | METHOD 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 |
20110261730 | APPARATUS AND METHOD FOR DATA TRANSMISSION IN WIRELESS COMMUNICATION SYSTEM - A data transmitter for a wireless communication system is provided. Said apparatus comprises an OFDM (Orthogonal Frequency Division Multiplexing) symbol generating part that generates a plurality of OFDM symbols, a frame configuration part that configures a frame comprising includes said plurality of OFDM symbols, and a transmission part that transmits said plurality of OFDM symbols based on said frame that has been configured. Said frame is divided into a plurality of sub-frames, the number of OFDM symbols that are included in an optional sub-frame is any one of 5, 6, and 7, and the bandwidth of said wireless communication system is 8.75 MHz. Based on a new frame configuration, new parameter requirements may be satisfied taking backward compatibility into account. | 10-27-2011 |
20120026920 | METHOD OF COMMUNICATION USING FRAME - A device and method for communicating by a mobile communication terminal in communication with a base station. The method according to an embodiment includes exchanging a frame of data with the base station. The frame of data includes a) a plurality of first subframes each having a first number of orthogonal frequency division multiple access (OFDMA) symbols, and b) a plurality of second subframes each having a second number of orthogonal frequency division multiple access (OFDMA) symbols different from the first number. A first and a last subframe each includes one of the plurality of first subframes. | 02-02-2012 |
20120039221 | METHOD FOR TRANSMITTING SIGNAL USING A FRAME OF A PREDETERMINED CYCLIC PREFIX LENGTH IN A WIRELESS COMMUNICATION SYSTEM - A method for transmitting a signal using a frame having a predetermined cyclic prefix (CP) in a wireless communication system is disclosed. The method for transmitting a signal using a frame having a predetermined cyclic prefix (CP) length in a wireless communication system that supports a plurality of cells comprises receiving the signal using a first frame from a base station; and transmitting the signal to the base station using the first frame, wherein the first frame is supported by a first cell of the plurality of cells and is different from a second frame supported by a second cell of the plurality of cells, the first frame has a structure where a overlap region between an uplink region of the first frame and a downlink region of the second frame or an overlap region between a downlink region of the first frame and an uplink region of the second frame is punctured, and a CP length of the first frame is different from that of the second frame. | 02-16-2012 |
20120044895 | METHOD OF TRANSMITTING AND RECEIVING AN ACKNOWLEDGEMENT IN A WIRELESS SYSTEM - A method for transmitting and receiving an ACKnowledgment (ACK) in a wireless communication system is disclosed. The method includes transmitting a bandwidth request indicator to a Base Station (BS); and receiving an ACK for the transmitted bandwidth request indicator from the BS, the ACK including an extended A-MAP Type field, wherein the extended A-MAP Type field indicates a format of the ACK. | 02-23-2012 |
20120045011 | METHOD FOR SETTING CYCLIC SHIFT CONSIDERING FREQUENCY OFFSET - A method for establishing a cyclic shift sequence to provide against the frequency offset is disclosed. The method calculates a distance between a channel response position of the sequence and an alias channel response position caused by a frequency offset, calculates the number of cyclic shifts per group according to the calculated distance, and establishes the cyclic shift (CS)-applying interval. This method easily establishes a cyclic shift (CS) interval at a specific location having no overlapping by considering a channel response of a reception (Rx) sequence and an alias location of this reception (Rx) sequence, although a reception (Rx) signal is shifted by a channel delay spreading or a propagation delay irrespective of categories of a domain generating a sequence, so that it can greatly reduce the number of the detection errors and the false alarm rate. And, if a sequence of the cyclic shift (CS) is allocated to a cell having a frequency offset of more than a predetermined level, the present invention can minimize the influence of a frequency offset on a high-mobility cell. | 02-23-2012 |
20120093080 | METHOD FOR TRANSMITTING AND RECEIVING DATA IN A WIRELESS COMMUNICATION SYSTEM - A method of transmitting and receiving data in a wireless communication system is disclosed. In the method of transmitting the data in the wireless communication system, a base station transmits downlink data to a first terminal supporting a first system through a first zone of a frame, and transmits downlink data to a second terminal supporting a second system through a second zone located at a location separated from the first zone backwardly by a frame offset on a time axis. The wireless communication system may support a bandwidth of 8.75 MHz, the frame offset is an offset between a start point of a frame for the first system and a start point of a frame for the second system, and the first zone includes 3+6*(frame offset−1) Orthogonal Frequency Division Multiplexing (OFDM) symbols. | 04-19-2012 |
20120106455 | METHOD FOR GENERATING A REFERENCE SIGNAL SEQUENCE USING GROUPING - A method for a base station to receive a reference signal sequence from one or more devices within a cell of the base station in a multiple cell environment includes providing the one or more devices with information about the reference signal sequence, wherein the reference signal sequence is defined by a cyclic shift of a base sequence, wherein the base sequence is one of a plurality of base sequences divided into groups, wherein each of the groups comprises at least one base sequence for each length (N), wherein each length (N) corresponds to (12*n), (n) being a positive integer, and receiving the reference signal sequence from one or more of the one or more devices. | 05-03-2012 |
20120106487 | WIRELESS COMMUNICATION SYSTEM WITH MULTIPLE TRANSMISSION ANTENNAS USING PILOT SUBCARRIER ALLOCATION - A method of allocating pilot subcarriers in a resource block for a wideband wireless mobile communication system with multiple transmission antennas using orthogonal frequency division multiplexing (OFDM) modulation is disclosed. In this method, pilot subcarriers are allocated to the resource block comprised of five (5) or seven (7) OFDM symbols so that only four (4) OFDM symbols of the resource block are allocated for pilot subcarriers. | 05-03-2012 |
20120108279 | METHOD FOR GENERATING A REFERENCE SIGNAL SEQUENCE USING GROUPING - A method for a base station to receive a reference signal sequence from one or more devices within a cell of the base station in a multiple cell environment includes providing the one or more devices with information about the reference signal sequence, wherein the reference signal sequence is defined by a cyclic shift of a sequence within a sequence group identified by a group index (u), wherein the group index (u) is defined according to the cell in the multiple cell environment, wherein the sequence is given by a cyclic extension of a Zadoff Chu (ZC) sequence having an index (q) and a length (N | 05-03-2012 |
20120127897 | METHOD FOR RETRANSMITTING DATA IN WIRELESS COMMUNICATION SYSTEM - A method for retransmitting data in wireless communication system is disclosed. MS can receive a NACK (Not-Acknowledge) signal from a base station (BS) through a specific downlink subframe of a specific frame in a first superframe, and the MS can retransmits the data using a second uplink subframe in a first frame in a second superframe subsequent to a first superframe. In this case, a index of the second uplink subframe may be 1. The wireless communication system can support the Half-Frequency Division Duplex (H-FDD) scheme. A first uplink subframe in the first frame of the second superframe can be punctured. | 05-24-2012 |
20120140844 | METHOD FOR SETTING CYCLIC SHIFT CONSIDERING FREQUENCY OFFSET - A method for transmitting a random access preamble to a base station at a user equipment (UE) includes generating the random access preamble from a Zadoff-Chu sequence having a length ‘N’ and a root index ‘M’, wherein the random access preamble is defined by a cyclic shift of the Zadoff-Chu sequence and transmitting the generated random access preamble to the base station via a random access channel, wherein the cyclic shift is given by using a variable corresponding to a Doppler shift of one subcarrier spacing, the variable given by using the root index ‘M’, and wherein the cyclic shift is differently given based on whether the variable is smaller than ⅓ of the length ‘N’. | 06-07-2012 |
20120157117 | METHOD AND APPARATUS FOR TRANSMITTING A SIGNAL FOR A LOCATION BASED-SERVICE IN A WIRELESS COMMUNICATION SYSTEM, AND METHOD AND APPARATUS FOR LOCATING A TERMINAL THAT USES THE SIGNAL - The present invention relates to a wireless communication system. In particular, for the transmission of a locating zone configured across one or more superframes for transmitting a locating synchronizing signal for determining the location of a terminal in a wireless communication system, the wireless communication system of the present invention transmits, to a terminal, a superframe header including information indicating whether or not to transmit the locating zone. Thus, the terminal can discern a terminal belonging to the location zone form among superframes received by the terminal. | 06-21-2012 |
20120170506 | METHOD AND APPARATUS FOR TRANSMITTING FRAME IN WIRELESS COMMUNICATION SYSTEM INCLUDING RELAY STATION - Provided are a method and an apparatus for transmitting a frame in a wireless communication system including a relay station. A base station sets a frame including a downlink (DL) access zone for transmitting a signal to the relay station and a DL relay zone for transmitting the signal to the relay station or a terminal, and transmits the frame. The DL access zone comprises a multiple-input multiple-output (MIMO) midamble for the terminal and the DL relay zone comprises an R-amble as an additional MIMO midamble. | 07-05-2012 |
20120170520 | METHOD OF PERFORMING CELL SEARCH IN WIRELESS COMMUNICATION SYSTEM - A method of performing cell search includes receiving a primary synchronization signal (PSS) comprising a primary synchronization code (PSC) and receiving a secondary synchronization signal (SSS) comprising a first secondary synchronization code (SSC) and a second SSC, wherein the SSS includes a first SSS and a second SSS, the first SSC and the second SSC are arranged in that order in the first SSS, and the second SSC and the first SSC are arranged in that order in the second SSS. Detection performance on synchronization signals can be improved, and cell search can be performed more reliably. | 07-05-2012 |
20120190381 | METHOD AND AN APPARATUS FOR TRANSMITTING SIGNALS FOR LOCATION BASED SERVICE, AND A METHOD AND AN APPARATUS FOR MEASURING LOCATION RELATED INFORMATION BASED ON THE SIGNALS - A wireless communication system is disclosed. The wireless communication system transmits a location measure signal for determining a location of a user equipment to the user equipment by allocating the location measure signal to at least one of symbols to which a synchronization signal is transmitted conventionally. In this case, a location related parameter of the user equipment can be measured with higher accuracy. | 07-26-2012 |
20120204075 | DATA PROCESSING METHOD AND APPARATUS FOR A HARQ OPERATION - A data processing method for a hybrid automatic repeat request (HARQ) is provided. Specifically, modulation can be performed according to a constellation rearrangement version (CRV) to generate a sub-packet for an incremental redundancy HARQ (IR-HARQ). When a constellation symbol modulated according to the CRV is segmented into an even symbol and an odd symbol for a plurality of transmit antennas, an identical CRV is determined for a pair of the even symbol and the odd symbol subsequent to the even symbol. When the constellation symbol modulated according to the CRV is transmitted to a receiving side, a newly generated sub-packet is retransmitted upon receiving a non-acknowledgement (NACK) signal. | 08-09-2012 |
20120207081 | METHOD AND APPARATUS FOR ALLOCATING WIRELESS RESOURCE IN WIRELESS COMMUNICATION SYSTEM INCLUDING RELAY STATION - Provided are a method and an apparatus for allocating a wireless resource in a wireless communication system including a relay station. A sub-channelization parameter for a relay zone is transmitted and a wireless resource is allocated to a relay station on the basis of the sub-channelization parameter. The relay zone is the zone for transmitting a signal from a base station to the relay station or receiving the signal from the relay station within a frame and the wireless resource allocated in the relay station is the remaining physical resource units (PRUs) except the PRUs allocated in a distributed resource unit (DRU). | 08-16-2012 |
20120207237 | WIRELESS COMMUNICATION SYSTEM USING PILOT SUBCARRIER ALLOCATION - A method of transmitting pilot signals by a transmitter in a multiple-input multiple-output (MIMO) antenna system using an orthogonal frequency division multiplexing (OFDM) scheme includes allocating pilot subcarrier locations within a resource block including OFDM symbols in a time domain and subcarriers in a frequency domain based on variables of ‘18k’, ‘9mi’ and ‘floor (ns/2)’, wherein ‘k’ indicates a subchannel index, ‘ns’ indicates a symbol index, ‘mi’ corresponds to ‘(ns+i)mod 2’, ‘i’ indicates an antenna index, wherein ‘floor (n)’ denotes a greatest integer that is not greater than ‘n’; and transmitting the pilot signals to a receiver based on the allocated pilot subcarrier locations. | 08-16-2012 |
20120213176 | METHOD OF TRANSMITTING CONTROL SIGNALS IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting control signals in a wireless communication system includes multiplexing a first control signal with a second control signal in a slot, the slot comprising a plurality of orthogonal frequency division multiplexing (OFDM) symbols in time domain, the plurality of OFDM symbols being divided into a plurality of data OFDM symbols and a plurality of reference signal (RS) OFDM symbols, wherein the first control signal is mapped to the plurality of data OFDM symbols after the first control signal is spread by a base sequence in the frequency domain, the RS is mapped to the plurality of RS OFDM symbols, the second control signal is mapped to at least one of the plurality of RS OFDM symbols, and transmitting the first control signal and the second control signal in the slot. | 08-23-2012 |
20120213193 | METHOD 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 |
20120218923 | APPARATUS FOR TRANSMITTING AND RECEIVING DOWNLINK HARQ FEEDBACK AND ITS METHOD - A terminal unit for receiving a hybrid automatic retransmission request (HARQ) feedback using a frequency division duplex (FDD) frame comprises: a receiver, which receives an uplink assignment information element (A-MAP IE) for allocating each uplink through each downlink subframe of a first frame from a base station; a processor, which performs a process for transmitting uplink data that corresponds to the received A-MAP IE for allocating each uplink for a predetermined processing time: a transmitter, which transmits the processed uplink data to the base station from the respective downlink subframes having received the A-MAP IE for allocating each uplink, through each corresponding uplink subframe, after the predetermined processing time has lapsed; and a receiver, which receives, from the base station, the downlink HARQ feedback for each uplink data through each uplink subframe that has, in a third frame, the same index as the index of each downlink subframe where the A-MAP IE for allocating each uplink has been transmitted, wherein the frame is composed of 5, 6 or 7 subframes. | 08-30-2012 |
20120230231 | METHOD IN WHICH A MOBILE TERMINAL TRANSMITS/RECEIVES A SIGNAL USING A PREDETERMINED TDD FRAME STRUCTURE IN A WIRELESS COMMUNICATION SYSTEM - The mobile station for transceiving signals using a predetermined time division duplex (TDD) frame structure in a wireless communication system includes a receiver for receiving a midamble from a base station (BS), and a relay station (RS). The receiver receives, from the BS, a first midamble through a second subframe of a downlink access zone of the BS and/or through a first subframe of a downlink relay zone that follows the downlink access zone. Alternatively, the receiver receives, from the RS, a second midamble through a second subframe of a downlink access zone of the RS. A transition gap in a downlink region is located in the last subframe of the downlink access zone of the RS, which follows the downlink access zone of the RS, and a transition gap in an uplink region is located in a first subframe of an uplink relay zone of the RS. | 09-13-2012 |
20120250592 | COMMUNICATION METHOD AND APPARATUS BETWEEN A TERMINAL AND A BASE STATION VIA A FRAME IN A COMMUNICATION SYSTEM INCLUDING A RELAY STATION - The present invention provides an embodiment of a method and system for applying a hybrid automatic repeat request (HARQ) scheme to a system employing a relay station. According to one embodiment of the present invention, a frame including an access zone and a relay zone can be configured based on the HARQ timing which can be calculated based on the structure of the access zone and relay zone. Also, according to one embodiment of the present invention, the structure of the access zone and relay zone can be determined by multiplexing communication systems that support two kinds of systems different from each other. According to one embodiment of the present invention, the HARQ scheme can be applied even to a frame including an access zone and a relay zone, by calculating the HARQ timing. | 10-04-2012 |
20120263214 | METHOD OF GENERATING RANDOM ACCESS PREAMBLES IN WIRELESS COMMUNICATION SYSTEM - A method of generating random access preambles includes receiving information on a source logical index and generating random access preambles in the order of increasing cyclic shift from root ZC sequences with the consecutive logical indexes from the beginning of the source logical index until a predetermined number of the random access preambles are found, wherein the consecutive logical indexes are mapped to root indexes of the root ZC sequences. | 10-18-2012 |
20120294247 | METHOD AND A USER EQUIPMENT FOR TRANSMITTING A SIGNAL, AND A METHOD AND A BASE STATION FOR RECEIVING A SIGNAL - A method for transmitting or receiving an uplink signal is disclosed. If a user equipment is connected to a base station in accordance with a legacy system support mode, it performs permutation for an uplink signal on a frequency axis in accordance with a first rule. If the user equipment is connected to the base station in accordance with a legacy system non-support mode, it performs permutation for the uplink signal on the frequency axis in accordance with a second rule. Cell ID corresponding to a secondary advanced preamble (SA-preamble) received from the base station is used for permutation based on the first rule and/or the second rule. | 11-22-2012 |
20120300719 | METHOD FOR CONFIGURING SUBCHANNELS IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR - A method for configuring subchannels for an uplink data transmission at a base station in a wireless communication system is disclosed herein. More specifically, the method includes the steps of dividing an uplink transmission resource to PUSC (Partial Usage of SubChannel) tiles of 4 subcarriers×3 symbols, configuring subchannels to 6 PUSC tiles based on a predetermined rule; allocating a predetermined number of contiguous subchannels among the configured subchannels as subchannels for a legacy system, and allocating the remaining subchannels as subchannels for the wireless communication system, wherein a subchannel rotation per slot consisting of 3 symbols is applied to the subchannels for the legacy system, and wherein the subchannel rotation per slot is based on a number of subchannels for the legacy system. | 11-29-2012 |
20120320845 | METHOD FOR TRANSMITTING UPLINK SIGNAL FOR LOCATION-BASED SERVICE AND USER DEVICE, AND METHOD FOR MEASURING LOCATION OF USER DEVICE USING UPLINK SIGNAL AND BASE STATION - In the present invention, an uplink synchronization signal for measuring a location of a user device is assigned to a predetermined uplink sub-frame and a predetermined sub-band and is transmitted to one or adjacent cells as well as a serving cell in a predetermined period. Since the synchronization signal for measuring the location is transmitted to a plurality of cells through the same wireless resource, other date are not transmitted to the same wireless resource and a near-far effect can be reduced in each cell. | 12-20-2012 |
20130003675 | SEQUENCE 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. | 01-03-2013 |
20130010691 | METHOD FOR UPDATING CARRIER INFORMATION IN A BROADBAND WIRELESS ACCESS SYSTEM - The present invention relates to a broadband wireless access system, and more particularly, to a method in which a terminal acquires and updates global carrier configuration information of base stations in a network, and to an apparatus for performing the method. According to one embodiment of the present invention, a method in which a terminal acquires carrier configuration information in a broadband wireless access system that supports multiple carriers comprises the following steps; transmitting a first message containing a change count value of the carrier configuration information acquired by the terminal: receiving, from the base station and in response to the first message, a second message containing the current change count value of the carrier configuration information; and, if the change count value of the first message and the change count value of the second message are different from each other, receiving a third message containing current carrier configuration information and the current change count value from the base station. | 01-10-2013 |
20130022138 | METHOD FOR TRANSMITTING AND RECEIVING ADDITIONAL CONTROL SIGNALS - A method for transmitting/receiving an additional control signal without any loss of bandwidth and power in an original Tx signal is disclosed. If the additional control signal is transmitted via the Tx signal composed of at least one of data and control signals, at least one of the amplitude and phase of the Tx signal of the time- and frequency-resource domain is modulated according to the additional control signal to be transmitted. The modulated Tx signal is transmitted to the receiver, so that the additional control signal can be transmitted irrespective of the original Tx signal. According to a modulation status of at least one of an amplitude and a phase of the Rx signal contained in the time- and frequency-resource domain, the additional control signal can be acquired. | 01-24-2013 |
20130034030 | METHOD AND APPARATUS FOR CONFIGURING FRAME IN WIRELESS COMMUNICATION SYSTEM INCLUDING RELAY STATION - A method and apparatus of communicating by a relay station a wireless communication system including a relay station is provided. The method include communicating with at least one of a base station and a user equipment through a frequency division duplex (FDD) uplink (UL) frame configured by the base station, the FDD UL frame including a UL relay zone including a plurality of UL subframes and a UL access zone including a plurality of UL subframes. The UL relay zone is a sector used for the relay station to transmit a signal to the base station, and the UL access zone is a sector used for the relay station to receive a signal from the user equipment. The UL relay zone is located before the UL access zone within the FDD UL frame. | 02-07-2013 |
20130044725 | METHOD AND APPARATUS FOR ALLOCATING RESOURCES FOR UPLINK CONTROL CHANNEL IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for allocating a resource for an uplink control channel in a wireless communication system is provided. The method includes allocating a first resource for an uplink control channel and a second resource for a dynamic ranging channel. The second resource is located right after the first resource. | 02-21-2013 |
20130058289 | METHOD AND DEVICE FOR PERFORMING RANGING - A method and device for performing a dedicated ranging for Machine To Machine (M2M) communication is provided. A M2M device receives a paging message indicating a dedicated ranging channel allocation from a base station. The dedicated ranging channel allocation is valid within a dedicated channel allocation timer. | 03-07-2013 |
20130128767 | METHOD AND APPARATUS FOR TRANSMITTING FEEDBACK INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for transmitting feedback of a mobile station (MS) in a wireless communication system supporting a multi-carrier operation are provided. The method includes transmitting feedback information to a base station, and in this case, the feedback information is transmitted through a MAC control message and the feedback information includes carrier information of an activation carrier related to the MAC control message. | 05-23-2013 |
20130129013 | METHOD AND APPARATUS FOR INFORMATION TRANSMISSION IN A RADIO COMMUNICATION SYSTEM - A method of transmitting, by a transmitter, information in a wireless communication system, the method includes generating first and second symbols; generating first and second transmit vectors on the basis of an Alamouti code from the first and second symbols; and transmitting the first transmit vector through a first antenna and transmitting the second transmit vector through a second antenna. The first transmit vector consists of a first transmit symbol and a second transmit symbol. The second transmit vector consists of a third transmit symbol and a fourth transmit symbol. The first, second, third, and fourth transmit symbols are transmitted based on first and second resource indexes. The first symbol is a first modulation symbol for first information, and the second symbol is a second modulation symbol for second information. | 05-23-2013 |
20130130702 | METHOD AND APPARATUS FOR DETECTING A SEGMENT IDENTIFIER IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a segment identifier detection method performed by a terminal if a segment being administrated by a base station in a wireless communication system has the frequency reuse factor of 3 and 2 at the same time. In particular, the method comprises: acquiring a cell identifier and a segment identifier corresponding to the cell identifier from a secondary advanced preamble (SA-preamble) that has been received from the base station; determining a frequency reuse factor of the base station; and if the frequency reuse factor is 2 and the obtained segment identifier is a third segment identifier, transforming the segment identifier corresponding to the cell identifier into a first segment identifier or a second segment identifier. | 05-23-2013 |
20130136099 | SYMBOL 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 |
20130148612 | METHOD OF TRANSMITTING CONTROL SIGNAL IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting a control signal in a wireless communication system includes allocating a first sequence to spread a first control signal in a radio resource, allocating a second sequence to spread a second control signal in the radio resource, selecting one of the first control signal and the second control signal, generating a spread control signal by spreading the selected control signal, and transmitting the spread control signal in the radio resource, wherein the first sequence and the second sequence use different cyclic shifts of a base sequence. | 06-13-2013 |
20130188561 | METHOD FOR SETTING CYCLIC SHIFT CONSIDERING FREQUENCY OFFSET - A method for transmitting a random access preamble to a base station includes generating the random access preamble from a Zadoff-Chu (ZC) sequence, wherein the random access preamble is defined by cyclic shift (C | 07-25-2013 |
20130188587 | METHOD OF TRANSMITTING UPLINK CONTROL SIGNALS IN WIRELESS COMMUNICATION SYSTEM - A method and device for transmitting uplink control signals in a wireless communication system, the method including: reserving a preassigned scheduling request (SR) physical uplink control channel (PUCCH) resource used for transmission of a SR; determining a frequency domain sequence and an orthogonal sequence based on the preassigned SR PUCCH resource; spreading an ACK/NACK for Hybrid Automatic Repeat Request (HARQ) with the frequency domain sequence and the orthogonal sequence to generate a mapped sequence; and transmitting the mapped sequence. | 07-25-2013 |
20130215868 | METHOD 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 |
20130215997 | METHOD FOR SETTING CYCLIC SHIFT CONSIDERING FREQUENCY OFFSET - A method for transmitting a random access preamble to a base station includes generating the random access preamble from a Zadoff-Chu (ZC) sequence having a length N, wherein the random access preamble is generated by considering a cyclic shift of the ZC sequence; and transmitting the random access preamble to the base station, wherein the cyclic shift is given by using a variable M corresponding to a Doppler shift of one subcarrier spacing, and wherein parameters associated with defining the cyclic shift are differently defined based on whether the variable M is less than ⅓ of the length N. | 08-22-2013 |
20130235827 | METHOD FOR ALLOCATING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A method of allocating control information in a wireless communication system is provided. The method includes: allocating essential control information of a first system to a first sub-frame in a frame including a plurality of sub-frames each of which comprises a plurality of orthogonal frequency-division multiplexing (OFDM) symbols; and allocating essential control information of a second system to an n | 09-12-2013 |
20130244651 | METHOD FOR PARTITIONING CELL IDENTITIES ACCORDING TO CELL TYPE IN WIRELESS COMMUNICATION SYSTEM AND AN APPARATUS THEREFOR - A method of transmitting a cell type information, which is transmitted by a base station in a wireless communication system, is disclosed. The present invention includes broadcasting a boundary point information (Z) between a cell identity of a public ABS (advanced base station) and a cell identity of a private ABS via an S-SFH SP3 (secondary-super frame header subpacket3). In this case, the boundary point information (Z) is a range information of cell identity partitions partitioned by granularity of 10 sequences or 20 sequences per segment and a total number of the cell identity partitions is 16. Further, the range information of cell identity partitions includes information that all cell identities are cell identities of the private ABS or information that all cell identities are cell identities of the public ABS except for cell identities of a macro ABS. | 09-19-2013 |
20130272174 | METHOD AND DEVICE FOR CONFIGURING FRAMES FOR DEVICE COOPERATION IN WIRELESS COMMUNICATION SYSTEM - Disclosed are a method and a device for transmitting uplink (UL) data in a wireless communication system. A cooperative device receives said UL data from a source device through a listening interval which is set within a TDD frame of said cooperative device, and transmits said UL data received from said source device to a base station through a UL subframe within the TDD frame of said cooperative device. At this time, said listening interval is overlapped with the UL subframe within the TDD frame of said source device. | 10-17-2013 |
20130286977 | METHOD 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. | 10-31-2013 |
20130286979 | METHOD FOR GENERATING A REFERENCE SIGNAL SEQUENCE USING GROUPING - Method for generating reference signal sequence using grouping is explained. In this method, base sequences are grouped such that each group contains at least one base sequence of each length, so UE(s) can use various length sequences as a reference signal. And in this method, inter cell interference caused by using various length sequence as a reference signal sequence can be minimized by grouping sequences having the high cross correlation relation. | 10-31-2013 |
20130287015 | METHOD OF PERFORMING CELL SEARCH IN WIRELESS COMMUNICATION SYSTEM - A method of performing cell search includes receiving a primary synchronization signal (PSS) comprising a primary synchronization code (PSC) and receiving a secondary synchronization signal (SSS) comprising a first secondary synchronization code (SSC) and a second SSC, wherein the SSS includes a first SSS and a second SSS, the first SSC and the second SSC are arranged in that order in the first SSS, and the second SSC and the first SSC are arranged in that order in the second SSS. Detection performance on synchronization signals can be improved, and cell search can be performed more reliably. | 10-31-2013 |
20140016605 | METHOD AND DEVICE FOR ALLOCATING A BROADCAST CHANNEL IN A WIRELESS MOBILE COMMUNICATION SYSTEM - A method for receiving a superframe header at a mobile station in a wireless mobile communication system is disclosed. The method comprises receiving a sub-frame including the superframe header and a first data channel and decoding the received superframe header. Herein, the superframe header is located within a predetermined physical frequency band and the pre-determined physical frequency band includes a synchronization channel. | 01-16-2014 |
20140023057 | METHOD OF TRANSMITTING CONTROL SIGNALS IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting control signals in a wireless communication system includes multiplexing a first control signal with a second control signal in a slot, the slot comprising a plurality of orthogonal frequency division multiplexing (OFDM) symbols in time domain, the plurality of OFDM symbols being divided into a plurality of data OFDM symbols and a plurality of reference signal (RS) OFDM symbols, wherein the first control signal is mapped to the plurality of data OFDM symbols after the first control signal is spread by a base sequence in the frequency domain, the RS is mapped to the plurality of RS OFDM symbols, the second control signal is mapped to at least one of the plurality of RS OFDM symbols, and transmitting the first control signal and the second control signal in the slot. | 01-23-2014 |
20140066054 | METHOD AND APPARATUS FOR DETECTING AN ACCESS POINT IN A RADIO ACCESS SYSTEM - The present disclosure relates to a method for performing communication between a terminal and a base station in a radio access system supporting multi-radio access technology (RAT), the method being characterized in that it comprises the steps of performing an access procedure between a first base station supporting a cellular radio access technology and a second base station supporting a short-range radio access technology; the second base station receiving, from the first base station and through a first radio scanner, control information relating to the transmission of an identification signal (IDS) for detecting the second base station of the terminal; and the second base station transmitting the IDS through the first radio channel to the terminal based on the received control information, wherein the first radio channel is the radio channel corresponding to the first base station. | 03-06-2014 |
20140071863 | APPARATUS AND METHOD FOR DATA TRANSMISSION IN WIRELESS COMMUNICATION SYSTEM - A data transmitter for a wireless communication system is provided. Said apparatus comprises an OFDM (Orthogonal Frequency Division Multiplexing) symbol generating part that generates a plurality of OFDM symbols, a frame configuration part that configures a frame comprising includes said plurality of OFDM symbols, and a transmission part that transmits said plurality of OFDM symbols based on said frame that has been configured. Said frame is divided into a plurality of sub-frames, the number of OFDM symbols that are included in an optional sub-frame is any one of 5, 6, and 7, and the bandwidth of said wireless communication system is 8.75 MHz. Based on a new frame configuration, new parameter requirements may be satisfied taking backward compatibility into account. | 03-13-2014 |
20140086358 | METHOD AND APPARATUS FOR INFORMATION TRANSMISSION IN A RADIO COMMUNICATION SYSTEM - A method of transmitting, by a transmitter, information in a wireless communication system, the method includes generating first and second symbols; generating first and second transmit vectors on the basis of an Alamouti code from the first and second symbols; and transmitting the first transmit vector through a first antenna and transmitting the second transmit vector through a second antenna. The first transmit vector consists of a first transmit symbol and a second transmit symbol. The second transmit vector consists of a third transmit symbol and a fourth transmit symbol. The first, second, third, and fourth transmit symbols are transmitted based on first and second resource indexes. The first symbol is a first modulation symbol for first information, and the second symbol is a second modulation symbol for second information. | 03-27-2014 |
20140093082 | TRAFFIC ENCRYPTION KEY MANAGEMENT FOR MACHINE TO MACHINE MULTICAST GROUP - A method for updating a group traffic key used for encrypting and decrypting multicast data in a wireless communication system is described. The method includes receiving, from the base station, a first message comprising a new group security seed; and updating the group traffic key based on the new group security seed. | 04-03-2014 |
20140105146 | METHOD OF TRANSMITTING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting a reference signal in a wireless communication system includes generating a frequency-domain reference signal by performing discrete Fourier transform (DFT) on a time-domain reference signal, generating a transmit signal by performing inverse fast Fourier transform (IFFT) on the frequency-domain reference signal and transmitting the transmit signal. | 04-17-2014 |
20140112274 | METHOD OF COMMUNICATION USING FRAME - A device and method for communicating by a mobile communication terminal in communication with a base station. The method according to an embodiment includes exchanging a frame of data with the base station. The frame of data includes a) a plurality of first subframes each having a first number of orthogonal frequency division multiple access (OFDMA) symbols, and b) a plurality of second subframes each having a second number of orthogonal frequency division multiple access (OFDMA) symbols different from the first number. A first and a last subframe each includes one of the plurality of first subframes. | 04-24-2014 |
20140146772 | WIRELESS COMMUNICATION SYSTEM USING PILOT SUBCARRIER ALLOCATION - A wireless communication system using pilot subcarrier allocation and a method of allocating the pilot subcarriers for use in downlink and uplink communication in a multiple-input multiple-output (MIMO) antenna system using orthogonal frequency division multiplexing (OFDM) modulation are disclosed. The method includes providing a frame structure comprising OFDM symbols in time domain and subcarriers in frequency domain and alternately allocating first pilot subcarriers for a first antenna and second pilot subcarriers for a second antenna in the time and frequency domains, wherein each of the alternating first pilot subcarriers and the second pilot subcarriers is separated by a multiple of 9 subcarriers in the frequency domain and further allocated in two contiguous OFDM symbols. | 05-29-2014 |
20140177554 | METHOD OF MAPPING PHYSICAL RESOURCE TO LOGICAL RESOURCE IN WIRELESS COMMUNICATION SYSTEM - A method of mapping a physical resource to a logical resource in a wireless communication system is described. The method includes dividing a physical frequency band into at least one frequency partition. Each frequency partition is divided into a localized region and a distributed region in a frequency domain. The method further includes mapping the at least one frequency partition into at least one logical resource unit. The localized region is directly mapped into the logical resource unit and the distributed region is mapped into the logical resource unit after rearranging subcarriers within the distributed region. | 06-26-2014 |
20140204855 | METHOD OF TRANSMITTING FEEDBACK MESSAGE IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting a feedback message in wireless communication system is provided. The method includes selecting N best subbands of M subbands according to CQI, where both M and N are a natural number and M is larger than N, generating multiple input multiple output (MIMO) information comprising N codebook indexes and N differential CQIs and transmitting the feedback message comprising the MIMO information. | 07-24-2014 |
20140213252 | DATA TRANSMISSION METHOD IN M2M DEVICE GROUP - The present disclosure relates to a method for M2M devices in an idle mode to perform a network reentry procedure in a wireless access network supporting machine-to-machine communication (M2M), and the method may include receiving information related to selection of a group delegate (GD) from a base station; receiving a response to a ranging request from the base station, wherein the ranging request is transmitted by an M2M device which is selected as the GD among a plurality of M2M devices in an M2M device group based on the information related to selection of the GD; and performing a network reentry procedure on the basis of the received response. | 07-31-2014 |
20140286455 | METHOD AND APPARATUS OF GENERATING PILOT SEQUENCE - A method of transmitting pilots id disclosed. The method of transmitting pilots includes transmitting pilots over N orthogonal frequency division multiplexing (OFDM) symbols, wherein a pilot at subcarrier k for OFDM symbol n is determined to have time varying characteristic, thereby to prevent the cause of spectral lines. | 09-25-2014 |
20140293956 | SYMBOL 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. | 10-02-2014 |
20140362804 | METHOD AND APPARATUS FOR THE TRANSMISSION OF A CONTROL SIGNAL IN A RADIO COMMUNICATION SYSTEM - The present invention provides a method and an apparatus for the transmission of control signal in a radio communication system. The method includes the steps of processing first control information on the basis of a first resource index to create a first control signal, processing second control information on the basis of a second resource index to create a second control signal, and transmitting the first control signal and the second control signal. | 12-11-2014 |
20140376524 | METHOD OF TRANSMITTING CONTROL SIGNALS IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting control signals in a wireless communication system includes multiplexing a first control signal with a second control signal in a slot, the slot comprising a plurality of orthogonal frequency division multiplexing (OFDM) symbols in time domain, the plurality of OFDM symbols being divided into a plurality of data OFDM symbols and a plurality of reference signal (RS) OFDM symbols, wherein the first control signal is mapped to the plurality of data OFDM symbols after the first control signal is spread by a base sequence in the frequency domain, the RS is mapped to the plurality of RS OFDM symbols, the second control signal is mapped to at least one of the plurality of RS OFDM symbols, and transmitting the first control signal and the second control signal in the slot. | 12-25-2014 |
20150023312 | METHOD OF TRANSMITTING CONTROL SIGNAL IN WIRELESS COMMUNICATION SYSTEM - A method and a base station for receiving uplink control signals in a wireless communication system are described. The base station receives a first uplink control channel in a mixed resource block from a first user equipment. The mixed resource block includes a plurality of subcarriers. The base station receives a second uplink control channel in the mixed resource block from a second user equipment. The first uplink control channel is identified by a first cyclic shift value. The second uplink control channel is identified by a second cyclic shift value that is different from the first cyclic shift value. The first uplink control channel carries a Hybrid Automatic Repeat Request (HARQ) acknowledgement/negative acknowledgement (ACK/NACK) of the first user equipment. The second uplink control channel carries a channel quality indicator (CQI) for the second user equipment and a HARQ ACK/NACK of the second user equipment. | 01-22-2015 |
20150036639 | METHOD OF TRANSMITTING UPLINK CONTROL SIGNALS IN WIRELESS COMMUNICATION SYSTEM - A method and device are disclosed for transmitting uplink control signals in a wireless communication system using at least one subframe comprising two slots, each slot including a plurality of symbols, the wireless communication system configured to transmit a first uplink control signal via an assigned first physical uplink control channel resource and to transmit a second uplink control signal via an assigned second physical uplink control channel resource. The method can include generating a modulation symbol by modulating the second uplink control signal, and transmitting the modulation symbol in a subframe via a physical uplink control channel resource which is assigned for the first uplink control signal if it is determined that the first uplink control signal and the second uplink control signal are to be transmitted in the subframe. | 02-05-2015 |
20150063198 | METHOD FOR ALLOCATING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A method of allocating control information in a wireless communication system is provided. The method includes: allocating essential control information of a first system to a first sub-frame in a frame including a plurality of sub-frames each of which comprises a plurality of orthogonal frequency-division multiplexing (OFDM) symbols; and allocating essential control information of a second system to an n | 03-05-2015 |