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Combining or distributing information via code word channels using multiple access techniques (e.g., CDMA)

Subclass of:

370 - Multiplex communications

370310000 - COMMUNICATION OVER FREE SPACE

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DocumentTitleDate
20130044744CDMA COMMUNICATIONS DEVICE AND RELATED METHODS - A code division multiple access (CDMA) communications device includes a CDMA receiver to isolate a CDMA signal, and a processor to generate a quantized sample representation of the CDMA signal. The processor performs a hard correlation between the quantized sample representation of the CDMA signal and a quantized representation of a reference to generate a coarse time alignment. Based upon the coarse time alignment, the processor performs a soft correlation between actual values of the CDMA signal and the reference.02-21-2013
20100142506SYNCHRONIZER FOR COMMUNICATION DEVICE AND ACCESS POINT - The present invention discloses a synchronizer for a communication device and an access point, which is installed inside the communication device and comprises a coefficient generator generating a set of coefficient code; a parallel-to-serial converter receiving a set of input code from an access point, performing a parallel-to-serial conversion on the set of input code and outputting a result; and a coefficient element array including a plurality of coefficient elements interconnecting with each other, wherein each of the coefficient elements receives the set of input code from the parallel-to-serial converter and receives the set of coefficient code, and then performs a passive or active correlation operation on the set of input code and the set of coefficient code to output a correlation value to the access point for synchronizing signals of the communication device and the access point. The present invention has the synchronization functions of two communication systems—WCDMA and CDMA 2000, and thus can reduce the fabrication cost and increase convenience of communication.06-10-2010
20100142507DYNAMIC MULTI-PATH DETECTING METHOD AND DEVICE IN CDMA COMMUNICATION SYSTEM - A dynamic multi-path detecting method in CDMA communication system is disclosed, the method includes: A, perform dynamic multi-path difference detection for the multi-path positions gotten from the multi-path detection, judge whether the multi-path position information in the conjoint frames is changed, if it is changed, output all of the multi-path positions that have been done by the multi-path difference detection, and perform the step B, otherwise, treat the multi-path position gotten from the current frame multi-path detection as the final multi-path detection result, and perform the step C; B, perform multi-path validation with every multi-path position that is output, and perform conjoint multi-path process for the multi-path positions that have been validated, treat the multi-path position processed by the conjoint multi-path process as the final multi-path detection result; C, output the final multi-path detection result. The present invention simultaneously discloses a multi-path searcher, it can guarantee the multi-path searching performance and reduce the occurrence of the false alarm in the dynamic channel efficiently through performing the present invention.06-10-2010
20090252140WIRELESS COMMUNICATION SYSTEM, TERMINAL STATION, AND WIRELESS COMMUNICATION METHOD - The invention includes a wireless communication system including a control station which transmits a wireless signal by one of a plurality of schemes, and a terminal station which receives the transmitted wireless signal using a plurality of directional antennas by one of a plurality of schemes. The control station repeatedly transmits a wireless signal while sequentially switching the plurality of schemes. The terminal station switches the plurality of schemes at a cycle different from the switching cycle of the control station, changes the directivity direction of the directional antenna every time the terminal station receives all wireless signals transmitted by the plurality of schemes, and detects the reception state of each of the wireless signals which have been transmitted by the plurality of schemes and received in the directivity directions of the directional antenna.10-08-2009
20080259892Method for Determining User Channel Impulse Response in Td-Scdma System - The present invention discloses a method for determining user channel impulse response in the TD-SCDMA system, including: setting one or more than one synchronous ID code and establishing corresponding relations between channel estimation parameters of each user and the synchronous ID code and a sub-frame number of a sub-frame transmitting the synchronous ID code; transmitting, by each user, a corresponding synchronous ID code in a sub-frame identified by a sub-frame number corresponding to channel estimation parameters according to the relations established in step A, wherein timing advance of transmitting the synchronous ID code is the same with that of transmitting uplink service data of the user; at Node B, continuing to detect whether there is the synchronous ID code in received signals, if there is one or more than one synchronous ID code, determining the channel estimation parameters of the user transmitting the synchronous ID code according to the detected synchronous ID code, sub-frame number of the current sub-frame and the corresponding relations established in step A; and at Node B, computing the channel impulse response of the user according to the determined channel estimation parameters and arriving time of the detected synchronous ID code.10-23-2008
20110194551METHOD AND APPARATUS FOR TRANSMITTING DOWNLINK REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTIPLE ANTENNAS - A method and apparatus for transmitting a downlink reference signal in a wireless communication system supporting multiple antennas is disclosed. A method for transmitting Channel State Information-Reference Signals (CSI-RSs) for eight or less antenna ports includes selecting one of a plurality of CSI-RS Resource Element (RE) groups defined on a data region of a downlink subframe and mapping CSI-RSs for the eight or less antenna ports to the selected CSI-RS RE group, and transmitting the downlink subframe in which the CSI-RSs for the eight or less antenna ports are mapped. The plurality of CSI-RS RE groups is defined such that a transmission diversity RE pair for data transmitted on the downlink subframe is not broken.08-11-2011
20090122776SYSTEM AND METHOD OF VERIFICATION OF HSDPA LAYER 1 CODING IN A NODE - A system and method of verifying layer 1 coding in a node. The method begins by conducting downlink processing of user data by a node. The node then outputs coded data. Next, downlink processing of the user data is conducted by an independent reference model. The independent reference model utilizes scheduler decisions from the node to conduct the downlink processing. The reference model then outputs coded data. The coded data from the node is compared with the coded data from the reference model. If the coded data from the node is substantially similar to the coded data from the reference mode, the coded data from the node is correct.05-14-2009
20100074242SIMPLE BLOCK SPACE TIME TRANSMIT DIVERSITY USING MULTIPLE SPREADING CODES - A base station and user equipment (UE) for use in a CDMA communication system are disclosed. The base station includes a first and second antenna for transmitting first and second communication bursts. The first channelization device spreads data using a first channelization code and the second channelization device spreads the data using a second channelization code. The UE has a data detection device for receiving a signal including the first and second communication bursts.03-25-2010
20100074241Apparatus and method for receiving imperfectly phase compensated electromagnetic signals - A signal receiver is configured for receiving signals from multiple antennas, wherein the signal from one of the antennas is phase compensated relative to the signal from another of the antennas. The receiver comprises (i) an equalizer configured to equalize signals received from the antennas in accordance with a determined equalization vector and (ii) a processor for determining the equalization vector. The processor is configured to determine the equalization vector in dependence on (i) a first channel estimate for a first channel from one of the antennas to the receiver and (ii) a phase-adjusted version of a second channel estimate for a second channel from another of the antennas to the receiver.03-25-2010
20100046492METHOD AND APPARATUS TO PERFORM RANGING OPERATIONS FOR WIRELESS STATIONS - Certain embodiments provide methods and apparatus for adjusting timing in an SDMA system. One method for adjusting the timing of packet transmissions in a wireless communications system, that may be performed by an access point, includes receiving ranging signals from a plurality of wireless network nodes, determining timing adjustment information for adjusting starting timing of packet transmissions from the wireless network nodes based on the ranging signals, and communicating the timing adjustment information to the wireless network nodes.02-25-2010
20100046491METHOD FOR RANGING DEVICES USING CODE SEQUENCES IN WLANs - Methods and apparatus for using code-division multiple access (CDMA) to transmit information via orthogonal frequency-division multiplexing (OFDM) to convey information from user terminals to an access point (AP) in a wireless local area network (WLAN) are provided. By using CDMA to convey information, a propagation delay between an access point (AP) and a user terminal may be determined by the AP, and timing adjustment information based on the delay may be sent to the user terminal. In this manner, subsequent uplink (UL) transmissions from multiple user terminals may be received simultaneously by the AP, despite the multiple user terminals having potentially different propagation delays.02-25-2010
20130077615INTERLEAVING FOR WIDEBAND CODE DIVISION MULTIPLE ACCESS - Described embodiments provide a wideband code division multiple access (W-CDMA) system, that employs an interleaving rule having a modified pruning algorithm. Interleaving, by pruning a sequence of bits in the W-CDMA system, includes determining a non-pruned interleaved vector having a length N. The determination of the non-pruned interleaved vector is based on a received length of an input vector from the sequence of bits. The input vector is padded. An interleaver generates a pre-pruned interleaved vector having a length equal to the length N, wherein the pre-pruned interleaved vector is a function of the padded input vector and the non-pruned interleaving vector. The interleaver prunes one or more elements from the pre-pruned interleaved vector based on a corresponding pruning indication in a pruning indication table, thereby providing a pruned interleaved vector as a portion of the interleaved sequence of bits.03-28-2013
20080267158TRANSMIT DIVERSITY FOR ACKNOWLEDGEMENT AND CATEGORY 0 BITS IN A WIRELESS COMMUNICATION SYSTEM - A method of transmitting acknowledgement/nonacknowledgement (ACK/NACK) signals including multiplexing ACK/NACK signals; and repeatedly transmitting for predetermined times the multiplexed signal with each of repetitions of transmitting the multiplexed signal being spread in a frequency domain and being mapped to a plurality of discrete resource units each having a pair of neighboring subcarriers and a predetermined number of Orthogonal Frequency Division Multiplexing (OFDM) control symbols.10-30-2008
20120207145METHOD AND APPARATUS FOR DOWNLINK TRANSMISSION BASED ON MIMO PRECODING IN WIRELESS COMMUNICATION SYSTEM EMPLOYING DISTRIBUTED ANTENNA SYSTEMS - A transmission method and apparatus utilizing Multiple-Input and Multiple-Output (MIMO) precoding based on Distributed Antenna Systems (DASs) are provided. The transmission method includes determining active antenna ports, for a User Equipment (UE) having multiple receive antennas, from among a plurality of Distributed Antenna Ports (DAPs) evenly placed in a service area; assigning a Multiple-Input and Multiple-Output (MIMO) mode to the UE and notifying the UE of the MIMO mode assignment; determining a signal precoding vector on a basis of feedback information for the MIMO mode received from the UE; and precoding a signal using the signal precoding vector and transmitting the precoded signal through the active antenna ports.08-16-2012
20100040035Interference canceling CDMA mobile station receiver - A receiver that provides interference cancellation in conjunction with RAKE processing. Signal parameters corresponding to each of a plurality of fingers corresponding to RAKE processing are maintained. Synthesized pilot signals are estimated using the signal parameters by interpolating waveforms for respective ones of the plurality of synthesized pilot signals to a common sampling lattice of the received set of data, and are then cancelled out. According to another aspect, a receiver ensures completion of a time-critical process such as signal demodulation and adaptively applies a non-time-critical process such as interference cancellation to the extent that computational resources become available subject to ensuring the completion of the time-critical process.02-18-2010
20100040034JOINT SIGNAL DEMODULATION IN A LOW AND HIGH DATA RATE CHANNEL ENVIRONMENT - A receiver is capable of demodulating both high data rate and low data rate transmissions. An antenna receives the high and low data rate transmissions, as a received signal. An interference canceling device cancels a contribution of at least one shared/common channel from the received signal, producing a first interference canceled signal. A first data detector for detecting data of one of the high or low data rate transmissions by processing the first interference canceled signal. An interference canceling device for canceling the detected data of the one transmissions from the first interference canceled signal, producing a second interference canceled signal. A second data detector for detecting data of an other of the high or low data rate transmissions from the second interference canceled signal.02-18-2010
20100091753Method And Arrangement For Noise Floor Estimation - A method of enabling improved soft noise power floor estimation in a code division multiple access wireless communication system, measuring (SO) samples of a received total wideband power, estimating (S04-15-2010
20100067514WIRELESS COMMUNICATION SYSTEMS WITH FEMTO NODES - Systems and methods for performing a handoff of an access terminal from a macro node to a femto node are disclosed. In one embodiment, the femto node is configured to transmit a predetermined signal for determining signal quality and an identifier that uniquely identifies the femto node to the access terminal. The access terminal is configured to transmit the identifier to the macro node. The femto node is identified as a hand in target based on the transmitted identifier and the macro node is configured to hand in the access terminal to the femto node.03-18-2010
20090303976INCREASING CAPACITY IN WIRELESS COMMUNICATION - Techniques to increase capacity in a wireless communications system. In an aspect, systematic non-transmission, or “blanking,” of minimal-rate frames transmitted in a communications system is provided. In an exemplary embodiment, eighth rate frames in a cdma2000 voice communications system are systematically substituted with null-rate frames carrying zero traffic bits. Provisions are nevertheless made for the transmission of certain designated as “critical” by, e.g., a vocoder. The receiver detects the presence of null rate or non-null rate transmissions and processes the received frames accordingly, including updating an outer loop power control only in response to non-null rate frames. Further techniques for changing the pilot transmission gating pattern to assist the receiver in detecting null rate frames are provided. In another aspect, early termination of a signal transmission over a wireless communications link is provided. In an exemplary embodiment, a base station (BS) transmits power control groups (PCG's) for a frame over a forward link (FL) to a mobile station (MS) until accurate reception of the frame is acknowledged by the MS over a reverse link (RL), possibly before all PCG's of the frame are received over the FL. Possible ACK signaling methods are defined for channels associated with a cdma2000 wireless communications system. In another exemplary embodiment, techniques for reverse link early termination are also provided.12-10-2009
20130070749DEVICE FOR SEPARATING SIGNAL TRANSMISSION AND RECEPTION AND COMMUNICATION SYSTEM INCLUDING SAME - A device for separating signal transmission and reception has first, second, and third device ports, a circulator including a first circulator port, a second circulator port and a third circulator port, a transmission filter coupled between the first circulator port and the first device port, and a reception filter coupled between the third circulator port and the third device port. The second circulator port is coupled to the second device port An input to the first port is output from the second port and an input to the second port is output from the third port. The circuit provides isolation between transmission and reception to improve communication efficiency and can reduce the size of a communication system.03-21-2013
20120307818CYCLIC PREFIX FOR NON-CONTIGUOUS SIGNAL TRANSMISSION - Transmitted signals are modified to facilitate the emulation of circular convolution in non-contiguous transmission environments. These modified signals may be derived from well-known signature sequences. In an exemplary method, a tail portion of a final segment of a base signal is prefixed to an initial segment of the base signal, to form a first transmit segment. One or more additional transmit segments are formed by prefixing, to each of the one or more segments of the base signal other than the initial segment, a tail portion of the immediately preceding segment of the base signal. The transmit segments so formed are transmitted in respective ones of the plurality of non-contiguous transmit-time intervals. Corresponding methods for receiving the transmitted segments and reconstructing the base signal are also described, as are corresponding transmitting and receiving apparatuses.12-06-2012
20090296680Wireless Communication Method in Traffic System, Wireless Base Station, and Wireless Terminal - An on-vehicle device sends an allocation request for a wireless resource to a roadside device. The roadside device, in response to receiving this allocation request, allocates a roadside-vehicle resource that is a wireless resource for roadside-vehicle communication with the on-vehicle device, and an inter-vehicle resource that is a wireless resource for inter-vehicle communication between on-vehicle devices; and sends the allocation information to the on-vehicle device. The on-vehicle device carries out roadside-vehicle communication with the roadside device using the roadside-vehicle resource identified with the allocation information received from the roadside device, and carries out inter-vehicle communication with other on-vehicle devices using the inter-vehicle resource identified with the allocation information. Thereby, roadside-vehicle communication and inter-vehicle communication can be achieved with higher utilization of wireless resources while avoiding the hidden terminal problem.12-03-2009
20090059883RADIO BASE STATION AND METHOD OF RECEIVING PHYSICAL CONTROL CHANNEL - Provided are a radio base station and a method of receiving a physical control channel which are capable of achieving enhanced data-transmission efficiency of an uplink physical channel when a code division multiple access scheme is used. The radio base station includes: a correlation unit configured to determine a degree of correlation between a code word transmitted from the mobile device through a physical control channel and each replica of the code word, and to then select the replica having a higher degree of correlation than a predetermined degree; an identification unit configured to identify a control information piece contained in the selected replica; and a code-word replica generator configured to reduce the number of the replicas when the control information piece is identified.03-05-2009
20090268704MOBILE COMMUNICATIONS SYSTEM FOR DYNAMICALLY CONTROLLING DATA RATE CONTROL LENGTH - A mobile communications system includes a base station that performs packet data communications with a terminal. The base station includes a communication unit that receives a data rate control (DRC) value and a message from the terminal, the message including pilot channel information detected from a pilot channel signal sent to the terminal from the base station; a packet data generating unit that generates packet data according to the DRC value; and a control unit determines a number of active sets based on the pilot channel information, and dynamically controls a DRC length based on the determined number of active sets. Also, the control unit controls the communication unit to transmit the dynamically controlled DRC length information to the terminal. Accordingly, the DRC length is dynamically controlled to be more compatible with a wireless environment.10-29-2009
20090268703RADIO COMMUNICATION TERMINAL AND RADIO COMMUNICATION METHOD - A radio communication terminal that performs data communication by selecting either one of a first data communication protocol and a second data communication protocol that has a lower level of priority than that of the first data communication protocol, comprising: a communication protocol determining part (10-29-2009
20130064238COMMUNICATION APPARATUS, COMMUNICATION SYSTEM, COMMUNICATION METHOD AND COMPUTER-READABLE STORAGE MEDIUM - In a communication system adapted to MIMO transmission, a receiver may include a filter to filter signals received from a transmitter through the receiver antennas and having a weight matrix thereof updated by an adaptive algorithm with respect to each substream message symbol from the transmitter, and a code generator to feed back a part of the weight matrix updated by the filter, as an updated STF code, to the transmitter. The transmitter may make the transmission using the updated STF code which is optimized for a current channel state.03-14-2013
20090232120SORTING FREQUENCY ARRAYS TO ACCOUNT FOR MULTI-PROTOCOL FREQUENCIES - A system comprises transceiver logic that receives signals on each of an array of frequencies. The transceiver logic is adapted to communicate using a first communication protocol. Processing logic couples to the transceiver logic. The processing logic identifies from among the array of frequencies a subset of shared frequencies that carry data transmitted using a second communication protocol. The processing logic adjusts frequency selection parameters in accordance with the identification. The processing logic uses the adjusted frequency selection parameters to select a target frequency from the array of frequencies to carry data.09-17-2009
20090046692METHOD FOR RECEIVING COMMUNICATION SIGNALS HAVING DIFFERING SPREADING FACTORS - A method for the simultaneous reception of data from multiple sources having different spreading factors. A plurality of transmission response matrices are generated and grouped together for equal spreading factors. A plurality of spreading factor group matrices are assembled. A base matrix is formed based upon the spreading factor group matrix having a lowest spreading factor. An additional spreading factor group matrix is selected for consideration. Column placement reference index for the base matrix is derived. A reference location for the base matrix is derived. A column set from the selected spreading factor group matrix is derived. The column set is inserted into the base matrix. A total transmission response matrix is assembled.02-19-2009
20090046691Robust scheduling request mechanism in a cellular environment - A sequence restriction method is shown applicable for an uplink (UL) scheduling request in order to increase resistance against frequency error. A cyclic shift restriction is applied to the orthogonal cover codes used in a scheduling request structure. For an uplink scheduling request, the transmitter selects sequences which tolerate high Dopplers and/or frequency errors. Performance of scheduling requests is improved for UEs having high Doppler/frequency error (reduces false alarm rate). In addition, the improvement is obtained without changing the scheduling request structure. As a result, the multiplexing capacity of scheduling requests is not reduced in environments where there are no high speed UEs.02-19-2009
20090046690HIGH-SPEED DIGITAL INTERFACE TRANSCEIVER AND METHOD OF SUPPLYING BI-DIRECTIONAL COMMUNICATION PROCESS ON HIGH-SPEED DIGITAL INTERFACE DEVICE - A high-speed digital interface (HSDI) transceiver with bi-directional HSDI function includes a transmitter, a receiver, a first multiplexer, and a controller. The first multiplexer is selectively coupled to the transmitter or the receiver in order to let the HSDI transceiver act as a source device or a sink device respectively. The controller is coupled to the first multiplexer for controlling a switching operation of the first multiplexer. When the HSDI transceiver is connected to an HSDI source device, the controller controls the first multiplexer to couple to the receiver to let the HSDI transceiver act as the sink device, and when the HSDI transceiver is connected to an HSDI sink device, the controller controls the first multiplexer to couple to the transmitter to let the HSDI transceiver act as the source device.02-19-2009
20100002670REDUCED PEAK-TO-RMS RATIO MULTICODE SIGNAL - A transmitter and a method are described herein that generate a reduced peak-to-rms ratio multicode radio signal which helps to conserve battery life and increase the communication range and average data throughput rate.01-07-2010
20090010239CONTROL OF CDMA SIGNAL INTEGRATION - A method for controlling integration for a CDMA signal and a receiver implementing the same. In accordance with the present invention, non-coherent and even coherent integration periods for a received signal are dynamically and adaptively controlled depending upon the condition of the received signal. The integration period can be very short when signal strength is strong and no blocking exists; while it can be extended to be longer when the signal strength is weak or there is a blocking. Therefore, it is possible to keep locking even under bad circumstances. In addition, the fix time can be shortened when the signal strength is very strong.01-08-2009
20090010238METHOD FOR CHANNEL ESTIMATION IN A POINT-TO-POINT COMMUNICATION NETWORK. - A method of using pilot signals in a wireless communication network including encoding pilot signals, and transmitting the encoded pilot signals over an in-band backhaul link between two nodes in the network. Preferably, the pilot signals are encoded with a CDMA codeword associated with a link. The pilot signals can be decoded to permit estimation of a channel and interference attributable to each link.01-08-2009
20090003301HS-PDSCH BLIND DECODING - The number of blind decoding operations in a wireless communication receiver is reduced. In one embodiment, a candidate set of transport formats is formed by eliminating one or more allowed transport formats, thus reducing the number of decode operations to be performed. In another embodiment, a received data transmission is partially decoded according to each of a plurality of transport formats, and decode quality metrics associated with each transport format are inspected. Only the transport formats yielding sufficiently high quality metrics are utilized to fully decode the transmission. In other embodiments, upon failure to successfully decode a received transmission, it is assumed to be a retransmission with a missed control transmission, and one or more transport formats specifying the position of a previous transmission in a buffer are added to the candidate set of transport formats. The received retransmission and previously received transmission are then HARQ combined and decoded.01-01-2009
20130163577POWER AMPLIFYING CIRCUIT AND WIRELESS COMMUNICATION DEVICE - A power amplifier circuit includes a first receiving switch, a first sending switch, and a power amplifier. The first receiving switch includes a first receiving switch terminal, a second receiving switch terminal, and a first receiving common terminal selectively connected to the first receiving switch terminal and the second receiving switch terminal The first sending switch includes a first sending switch terminal, a second sending switch terminal, and a first sending common terminal selectively connected to the first sending switch terminal and the second sending switch terminal. The power amplifier includes a first frequency band signal receiving terminal electrically connected to the first receiving common terminal, and a first frequency band signal sending terminal electrically connected to the first sending common terminal.06-27-2013
20090196272MOBILE STATION, BASE STATION AND RADIO COMMUNICATION METHOD - A mobile station that receives multibeam data in preceding Multiple Input Multiple Output (MIMO) from a base station, using a plurality of antennas, includes: a code book that includes contents identical to contents of a code book installed in the base station and that includes information of beam selection for preceding; and a control unit that determines a weight for carrying out optimum beam selection for preceding at time of searching information in the code book, based on a state of a beam in each resource block of received data that is divided into a plurality of resource blocks in a radio communication band, to transmit the weight as feedback information to the base station.08-06-2009
20100014501Data transmission method - A data transmission system includes a transmitter configured to transmit a data signal in the form of a data stream of data bursts in at least two transmission modes to a receiver, in the first mode a reference signal being transmitted by the transmitter in each data burst and being evaluated in the receiver, and in the second mode no reference signal being transmitted by the transmitter in each data burst. In the second mode, in place of the reference signal, additional redundancy data of the data signal are transmitted in each data burst.01-21-2010
20110280237Method and System for Single Weight (SW) Antenna System for Single Channel (SC) MIMO - Methods and systems for processing signals in a receiver are disclosed herein and may comprise receiving WCDMA signals via M receive antennas, tracking a plurality of received clusters within the received WCDMA signals, and estimating a complex phase and amplitude of a portion of each of the received clusters. A single cluster may comprise an aggregate of received WCDMA signal paths and (M−1) phase shifters may be utilized for the estimating of the complex phase. Complex waveforms, comprising in-phase (I) and quadrature (Q) components for the received clusters within the received WCDMA signals, may be processed. The processed complex waveforms comprising the in-phase and quadrature components may be filtered to a WCDMA baseband bandwidth. A phase and/or amplitude for at least one of the received WCDMA signals may be adjusted utilizing the estimated complex phase and amplitude. The phase and/or amplitude may be adjusted continuously and/or at discrete intervals.11-17-2011
20090129359Hand Over Method From Asynchronous Mobile Communication Network to Synchronous Mobile Communication Network - The present invention relates to a method of performing handover from an asynchronous mobile communication network to a synchronous mobile communication network. If the access network of the asynchronous mobile communication network (05-21-2009
20090103508AUTOMATIC POWER CONTROL SYSTEM FOR A CODE DIVISION MULTIPLE ACCESS (CDMA) COMMUNICATIONS SYSTEM - A receiver receives signals and noise over a frequency spectrum of a desired received signal. The desired received signal is spread using code division multiple access. The received signals and noise are demodulated to produce a demodulated signal. The demodulated signal is despread using a code uncorrelated with a code associated with the desired received signal. A power level of the despread demodulated signal is measured as an estimate of the noise level of the frequency spectrum.04-23-2009
20100226356METHOD FOR ITERATIVE INTERFERENCE CANCELLATION FOR CO-CHANNEL MULTI-CARRIER AND NARROWBAND SYSTEMS - In a co-channel deployment of narrowband and multi-carrier technologies (e.g., a femtocell and a macrocell), a method provides cancelling of interference which treats the co-channel signals as desired signals and enhances each of them iteratively. At each iteration, each signal is demodulated and regenerated based on symbol decisions already made and a predetermined channel impulse response. To estimate the other (interfering) co-channel signal, the regenerated signal is subtracted from the aggregate signal. Simulations have shown that a method of the present invention can provide fundamental improvement in the performances of both interfering systems in as few as two iterations. The fundamental performance gain that can be obtained outweigh the required computational burden.09-09-2010
20090092117METHOD AND DEVICE FOR TRANSFERRING MULTI-STANDARD RADIO SERVICE DATA - The embodiments of the present invention relate to a method and a device for transferring radio service data. The method includes: designing a radio service frame timing mechanism and/or a rule of filling IQ data for a plurality of standards; configuring frame timing mechanisms corresponding to various services according to the designed radio service frame timing mechanism and/or the rule of filling IQ data for a plurality of standards; and transmitting multi-standard radio service data according to the configured frame timing information and/or methods of mapping IQ containers. The device includes a determination unit, a configuring unit and a transfer unit. Thus, uniform transmission of radio IQ data and frame synchronization for different standards may be enabled via a common radio interface between a Radio Equipment Controller (REC) and a Radio Equipment (RE).04-09-2009
20120008616Apparatus and Method for Pilot Detection - Apparatus and method for communication are provided. The solution comprises obtaining as an input a signal; sampling the signal; feeding the sampled signal to a given number of parallel correlators having a given correlation length, controlling the correlation the sampled signal in each correlator with a unique time shift section of the pilot sequence of the communication system, determining the strongest correlation peaks, and determining on the basis of the correlation peaks and corresponding time shifts the strongest pilots in the signal.01-12-2012
20110299518METHOD, SYSTEM AND APPARATUS FOR ACCESSING NETWORK - A method, a system and an apparatus for accessing a network are provided. The method includes: identifying, through the network interface, the type of a network module connected with a network interface, where each type of the network module corresponds to one type of 3G network; according to the type of the network module, establishing a connection between the network module and the 3G network corresponding to the network module; and accessing the corresponding 3G network through the network module. In the embodiments of the present invention, the 3G networks with different modes c an be accessed by identifying the types of different network modules, and therefore multi-mode upstream access can be satisfied, the application range of a router for accessing the 3G network is widened, and upstream access cost is reduced when different 3G networks with different modes need to be accessed.12-08-2011
20110286441 SCALABLE SYSTEM TO ADAPTIVELY TRANSMIT AND RECEIVE INCLUDING ADAPTIVE ANTENNA SIGNAL AND BACK-END PROCESSORS - An adaptive baseband processing system having a scalable architecture to allow scaling to support adaptive transmission and receive, at different granularity, channel vs. subchannel, for different number of antennas and/or users, including their components, are described herein. In various embodiments, the components include an adaptive antenna signal (AAS) coupled to a front-end processor, a back-end processor, or combinations thereof.11-24-2011
20090034502FIRMWARE PROCESSING FOR DOWNLINK F-DPCH - A downlink channel receiver operable to implement fractional dedicated physical channel (F-DPCH) processing within a Rake receiver structure is provided. The downlink channel receiver includes a receiver, a baseband processing block, a WCDMA processing block, wherein F-DPCH processing is divided between a plurality of hardware processing blocks and a plurality of firmware (FW) processing blocks. The receiver is operable to convert a radio frequency (RF) signal to a baseband signal. The baseband processing block operable to processes and provides the baseband signal to the WCDMA processing block. F-DPCH processing is divided between the plurality of hardware processing blocks and plurality of firmware (FW) processing blocks.02-05-2009
20110292926MULTIPLE INPUT MULTIPLE OUTPUT COMMUNICATION SYSTEM AND COMMUNICATION METHOD OF CONFIGURING CODEBOOK - A multiple input multiple output (MIMO) communication system and communication method of configuring a codebook are provided. A channel may be formed between a transmitter and a receiver, and a cross-polarization discrimination value (XPD) may be detected. The XPD may vary based on a location of the transmitter and the receiver, a mobility thereof, or a peripheral environment, among other factors. The codebook may be configured based on the XPD.12-01-2011
20080273514Method of Receiving System Information for a Wireless Communications System and Related Apparatus - A method of receiving system information for a user equipment, hereinafter called UE, of a wireless communications system is provided to prevent a connection loss between the UE and a network terminal. The UE uses a dedicated HS-DSCH radio network transaction identifier, abbreviated to H-RNTI, for a high speed downlink operation in a CELL_PCH state. The method includes receiving a radio resource control message used for providing modification indication of the system information via a broadcast control channel.11-06-2008
20110019656Advanced signal processors for Interference Cancellation in baseband receivers - An interference canceller comprises a composite interference vector (CIV) generator configured to produce a CIV by combining soft and/or hard estimates of interference, an interference-cancelling operator configured for generating a soft projection operator, and a soft-projection canceller configured for performing a soft projection of the received baseband signal to output an interference-cancelled signal. Weights used in the soft-projection operator are selected to maximize a post-processing SINR.01-27-2011
20090086699Method and system for unequal error protection with block codes for wireless transmission - A method and system for wireless data communication is provided, which involves constructing a data payload containing data, partitioning the data payload into fragments, performing block code encoding on each fragment, wherein at least one fragment is encoded at a different coding gain than another fragment, and transmitting the data payload including encoded fragments over a wireless channel.04-02-2009
20110007730METHOD OF GENERATING DATA AND TRANSMITTING SYNCHRONIZATION CHANNEL IN MOBILE COMMUNICATION SYSTEM - A method for a transmitting side to transmit a sync channel in a wireless communication system using a multicarrier is disclosed. The present invention includes the steps of generating one synchronization channel including a plurality of sub-synchronization channels and the generated multicarrier symbol to a receiving side via the synchronization channel. Accordingly, the present invention enables the transmitting side to efficiently use a radio resource, thereby raising data transmission efficiency of synchronization channel.01-13-2011
20090196271PILOT SIGNALS FOR SYNCHRONIZATION AND/OR CHANNEL ESTIMATION - The frame words of the embodiments are suitable for frame synchronization and/or channel estimation. By adding the autocorrelation and/or cross-correlation functions of frame words, double maximum values equal in magnitude and opposite polarity at zero and middle shifts are obtained. This property can be used to slot-by-slot, double-check frame synchronization timing, single frame synchronization and/or channel estimation and allows reduction of the synchronization search time. Further, the present invention allows a simpler construction of a correlator circuit for a receiver. A frame synchronization apparatus and method using an optimal pilot pattern is used in a wide band code division multiple Access (W-CDMA) next generation mobile communication system.08-06-2009
20090196270RADIO TRANSMISSION DEVICE AND RADIO TRANSMISSION METHOD - It is possible to provide a radio transmission device and a radio transmission method capable of improving resource use efficiency without increasing or decreasing the number of Signatures. The device and the method use a Signature table having Access types, DL CQI, and Signatures uniquely correlated to one another. In this Signature table, the DL CQI level is set for each Access type in accordance with the data amount transmitted/received before a data communication start after a transmission of RACH. When the Access type is IDLE, the data amount is greater as compared to other Access types and the DL CQI is set to level 08-06-2009
20100034185Radio quality based channel resource management - The present invention provides a quality based resource management fin a radio communications system. In this resource management, channel resources are dynamically allocated to a multi-resource capable mobile unit based on a radio quality of a radio link between the mobile unit and an associated base station. Thus, the amount of these resources to be allocated to the mobile unit is determined based on this radio quality and can be dynamically updated based on new quality reports. A high experienced quality means that more resources are allocated. The quality based resource allocation can also be combined with a quality based transmission scheduling. In such a case, mobile units experiencing a high quality are allowed to transmit more often in a period of time than mobile units with low quality.02-11-2010
20110261805UNIVERSAL ACQUISITION AND TRACKING APPARATUS FOR GLOBAL NAVIGATION SATELLITE SYSTEM (GNSS) - An acquisition and tracking apparatus is provided for tracking digitized spread spectrum navigation signals modulated with a spreading code according to any of a set of modulation types including Binary Phase Shift Keying (BPSK) with and without Frequency Domain Multiplexing Access (FDMA), time multiplexed BPSK, Quadrature Phase Shift Keying (QPSK), sine and cosine Binary Offset Carrier (BOC), modified, complex, and time multiplexed BOC (TMBOC), the apparatus comprising a plurality of universal tracking channels, each coupled to an interrupt module. The universal tracking channel includes a carrier demodulation module, a code generation module, a correlator module, a code frequencies generation module, and a subcarrier combining module for efficiently using the correlator resources in the correlation of the data and the pilot components of the signal within a single universal tracking channel. A corresponding method of operation is also provided.10-27-2011
20090161649TD-SCDMA UPLINK PROCESSING - A wireless system includes a TTI memory architecture in which encoded data are stored in a memory at a rate of one block of encoded data per transmission time interval (TTI), TTI being selected from a set of predetermined values, the memory including memory lines each having a predetermined number of bits that is determined according to the set of predetermined TTI values. For every block of data in which the end of the block of data does not align with an end of a last memory line occupied by the block of data, one or more padded bits are stored after the end of the block of data to the end of the last memory line occupied by the block of data so the last memory line is filled with a portion of the block of data and the one or more padded bits. The block of data and the padded bits are read in one or more equal sized segments.06-25-2009
20110206030RADIO COMMUNICATION DEVICE AND RADIO COMMUNICATION METHOD - The present invention makes it possible to obtain the transmission diversity effect by applying a CDD while reducing the inter-code interference when performing a code multiplexing. When an Ack/Nack signal is transmitted from a user terminal to a base station in an upstream control channel by using an Ack/Nack resource, the signal is code-multiplexed by using a code sequence containing an orthogonal sequence and a cyclic-shifted sequence and transmitted from a plurality of user terminals to the base station. Upon using an aggregation size indicating the number of control signals of the downstream control channel, if the aggregation size is greater than one, it is determined that no resource located at the right of the axis of the cyclic-shifted amount of the cyclic-shifted sequence in the same orthogonal code of the orthogonal sequence is used, and the Ack/Nack signal to which CDD is applied from a plurality of antennas is transmitted by using a resource ACK #08-25-2011
20100091754TFC SELECTION APPARATUS IN MOBILE COMMUNICATION SYSTEM, TFC SELECTION METHOD AND PROGRAM THEREFOR - A TFC selection apparatus includes: a SIR calculation unit calculating SIR by using a CPICH symbol of receive data; a conversion unit obtaining STFC(m) which contains m pieces of TFC corresponding to the calculated SIR; a total transmit power calculation unit selecting TFC corresponding to the obtained STFC(m) from a TFCS which is a set of TFCs sequenced in proportion to a magnitude of total transmit power, and calculating total transmit power of TFC included in the TFCS in order indicated by a search direction signal, beginning with the selected TFC as a starting point; and a TFC selection unit generating the search direction signal based on the calculated total transmit power of the TFC as the starting point, and selecting an optimum TFC to be applied to transmit data from the TFCS, wherein the TFC selection unit selects TFC as the optimum TFC corresponding to total transmit power which indicates less than or equal to as well as approximate to a maximum value allowed for the transmit data.04-15-2010
20090154441Optimizing Code Utilization Regarding A Secondary Scrambling Code - The present invention relates to a method, arrangement and computer-readable medium for optimizing code utilization in a code division multiple access (CDMA) communication network comprising a first communication network entity (06-18-2009
20110261806SOUNDING CHANNEL APPARATUS AND METHOD - According to an example embodiment, a method may include allocating, within a single physical resource unit (PRU), a plurality of channel sounding groups. Wherein each channel sounding group includes a frequency-time domain code division multiplexing (CDM) allocation. The method may also include broadcasting, in a downlink direction to one or more mobile stations in a wireless network, a signal that causes the receiving mobile stations to transmit a channel sounding signal. The method may further include receiving at least one channel sounding signal from at least one of the one or more mobile stations, the channel sounding signal being received in an uplink direction via one or more channel sounding groups. And, the method may include estimating the channel quality, of the channel used by the physical resource unit, based upon the received at least one channel sounding signal.10-27-2011
20090147762TRANSMITTER AND DATA TRANSMISSION METHOD - A method and apparatus for data transmission are provided. Data values of a plurality of channels are transformed into a transmission signal. An enhanced shaping filter is provided to shape a binary stream of only single digits and generate a shaped signal. A weighting unit is coupled to the output of the shaping filter, weighting the shaped signal to effectively generate a quality baseband signal. The binary stream is converted from the data values through spreading and scrambling. A scrambling unit, scrambles the binary stream with scrambling codes. A spreading unit spreads the binary stream at a chip rate before sending the binary to the scrambling unit.06-11-2009
20120140758SIGNALING FORMAT FOR WIRELESS COMMUNICATIONS - Methods, devices and systems for wireless communication generate signals by determining whether legacy devices are within a proximal region of the wireless communication. When at least one legacy device is within the proximal region, a frame is formatted to include a preamble field, a signal field, and a data field. Further, the uncoded bits are encoded according to a coding format. The coding format is determined according to bits in the preamble and applicable sub-field lengths.06-07-2012
20080273511Multi-Cell Joint-Detection Method in Time-Slotted CDMA System - A multi-cell joint-detection method in a time-slotted CDMA system includes: performing a multiple code set channel estimation on received signal data and obtaining channel estimation results of a home cell and of neighboring cells; adjusting the channel estimation results of the home cell and/or neighboring cells or the estimation result of a combined channel response according to a comparative delay difference between signals of users in different cells; and performing a joint-detection according to the estimation result of the combined channel response obtained by adjusting the channel estimation results of the users in different cells or according to the estimation result of the combined channel response. The MAI between neighboring universal-frequency cells having comparative delays and especially large comparative delays is greatly suppressed and the performance of the time-slotted CDMA system when working in neighboring universal-frequency cells is improved.11-06-2008
20100118855METHOD AND APPARATUS FOR HYBRID FDM-CDM STRUCTURE FOR SINGLE CARRIER BASED CONTROL CHANNELS - A system and method for hybrid FDM (frequency division multiplexing)-CDM (code division multiplexing) structure for single carrier control channels is provided. The hybrid FDM-CDM structure maximizes frequency diversity over the entire available bandwidth such that orthogonality between signals from users in a given cell is maintained. Thus, users in the given cell can transmit over a non-contiguous set of tones. Furthermore, the hybrid FDM-CDM structure maintains orthogonality of a pilot of users in different cells based on a despreading operation in the time domain.05-13-2010
20110149940Method for Terminals to Switch the Reverse Traffic Channels in CDMA Group Call Service - The present invention discloses a method for terminals to switch among the reverse traffic channels in CDMA group call service. During the establishing procedure of the standard group call service, the originating call terminal sets the long code mask for the reverse dedicated traffic channel, establishes the reverse dedicated traffic channel and obtains the talk right to become the speaking terminal; the called terminal sets the long code mask for the reverse shared traffic channel, establishes the reverse shared traffic channel and becomes the listening terminal. After the speaking terminal successfully releases the talk right, it resets the long code mask of the reverse traffic channel as the long code mask of the reverse shared traffic channel and switches to the reverse shared traffic channel to become the listening terminal. After the listening terminal applies for and gets the talk right, it resets the long code mask of the reverse traffic channel as the long code mask of the reverse dedicated traffic channel and switches to the reverse dedicated traffic channel to become the speaking terminal. According to the present invention, in the standard group call service, the terminal of one group can rapidly switch to the corresponding reverse traffic channel when the status is changed.06-23-2011
20090310588METHOD AND APPARATUS FOR HIGH RATE PACKET DATA TRANSMISSION - Methods and apparatus used in a wireless communication system. A data request message may be periodically transmitting by a mobile station to a base station. The data request message may provide information about orthogonal codes to be used by the base station to communicate with the mobile station. The mobile station may receive data transmitted by the base station, the data being transmitted by the base station based on the information about the orthogonal codes provided in the data request message. The information about the orthogonal codes may be based on a quality measure made by the mobile station on a forward link pilot channel from the base station to the mobile station.12-17-2009
20090262719Apparatuses and methods for beamforming in a multiple input multiple output (MIMO) wireless communication system based on hybrid division duplex - Beamforming in a Multiple Input Multiple Output (MIMO) wireless communication system is provided. An apparatus includes an estimator for estimating a channel matrix of at least one terminal compliant with a Time Division Duplex (TDD) scheme; a processor for confirming information indicative of a channel matrix fed back from at least one terminal compliant with a Frequency Division Duplex (FDD) scheme; and a controller for determining precoding vectors or terminals to be connected in a spatial multiple access manner, using the channel matrix of the at least one terminal compliant with the TDD scheme and a principal vector of the at least one terminal compliant with the FDD scheme.10-22-2009
20100118856Radio Link Performance Prediction in Wireless Communication Terminal - A wireless communication terminal including a controller coupled to a transceiver wherein the controller is configured to determine a synchronization based on a mapping of channel state information to decoder error rate corresponding to a hypothetical control code word, to attempt to decode a control codeword in a received signal, and to conclude that an out of synchronization event has not occurred if the control codeword is decoded successfully regardless of an indication of the mapping.05-13-2010
20090086700SYSTEMS AND METHODS FOR COMMUNICATING CONTROL DATA USING MULTIPLE SLOT FORMATS - Systems and methods for communicating control information in slots that use at least two different slot formats. In one embodiment, a method implemented in a wireless communication system includes providing at least two different slot formats, formatting control data in the slots of a control frame according to the at least two different slot formats, transmitting the control frame from a mobile station to a base station via a control channel, receiving the control frame, extracting data rate information from the control frame according to the at least two different slot formats, decoding the extracted control data, parsing the extracted data into separate data rate information and decoding data received via one or more data channels using the decoded control data. In one embodiment, the method is used to enable additional TFCI data corresponding to two different data channels to be transmitted on a single control channel.04-02-2009
20090252141Method and Apparatus for Transmitting and Receiving High Speed Data Using Code Division Multiple Access Channels - The present invention describes a spread spectrum communication system wherein the frequency of carriers and the code channels of the carriers or both for transmission to a given remote station user vary in time. This provides for a direct sequence spectrum communications system which changes frequency or code channel according to a predetermined pattern. The code channels and frequencies can be determined in accordance with a deterministic function or based upon a subset of the data to be transmitted. A receiver structure is also described for receiving the same.10-08-2009
20110026511METHOD OF PROCESSING DATA IN A MEDIUM ACCESS CONTROL (MAC) LAYER - A method of processing data in a Medium Access Control (MAC) layer through which at least one first channel is mapped to a second channel in a transmitting end of a wireless communication system is disclosed. More specifically, a MAC layer data block is configured by including at least one higher layer data block received through the at least one first channel and adding a header thereto which includes at least one field which indicates at least two types of information. Furthermore, the MAC layer data block is transferred to a lower layer through the second channel.02-03-2011
20120106533UNIVERSAL INTEGRATED CIRCUIT CARD UPDATES IN A HYBRID NETWORK - A universal integrated circuit card (UICC) may include a universal subscriber identity module (USIM); a code division multiple access (CDMA) subscriber identity module (CSIM); a memory to store instructions; and a processor. The processor may execute instructions to determine a type of wireless access network available to a user equipment (UE) associated with the UICC; perform updates of the UICC using the USIM, in response to detecting a CDMA enhanced High Rate Packet Data (eHRPD) network, a Global System for Mobile Communication (GSM) access network, or a Long Term Evolution (LTE) access network; and perform updates of the UICC using the CSIM, in response to detecting an available CDMA access network other than a CDMA eHRPD access network.05-03-2012
20090262720METHOD AND APPARATUS FOR CONTROLLING A REVERSE TRAFFIC RATE IN A MOBILE COMMUNICATION SYSTEM - A method and apparatus for controlling an uplink data rate in a mobile station of a mobile communication system. The apparatus includes a receiver for receiving control information based on uplink data transmitted in a first transmission interval, a controller for determining an adjusted data rate for uplink data to be transmitted in a second transmission interval, the adjusted data rate being determined based on the received control information and a data rate of the uplink data in the first transmission interval, and a transmitter for transmitting the uplink data in the second transmission interval according to the adjusted data rate. The first transmission interval and the second transmission interval are separated by at least one transmission interval.10-22-2009
20090296679SYMBOL-LEVEL ADAPTATION METHOD, MEMORY, EQUALIZER AND RECEIVER FOR IMPLEMENTING THIS METHOD - A symbol-level adaptation method to adapt at least one coefficient of an equalizer, wherein the method includes a) determining if there exists a shortened pilot channelization code which has a spreading factor shorter than the spreading factor of a full pilot channelization code and which is, at the same time, still orthogonal to any other simultaneously active channelization codes, and, b) if there exists a shortened pilot channelization code, despreading the pilot channel using the shortened pilot channelization code to obtain a pilot symbol estimation, and c) adapting the value of the equalizer coefficient according to the error between the pilot symbol estimation obtained from step b) and a corresponding expected pilot symbol.12-03-2009
20090279528METHOD AND SYSTEM FOR SINGLE ANTENNA RECEIVER SYSTEM FOR HSDPA - Aspects of a method and system for a single antenna receiver system for HSDPA are provided. Aspects of a method for processing RF signals, the method may comprise computing channel estimates based on a plurality of received individual distinct path signals, generating timing reference signals indicating a location of at least one of the plurality of received individual distinct path signals, combining at least a portion of the plurality of received individual distinct path signals as a signal cluster based on at least one of the computed channel estimates and said generated timing reference signals, and selecting at least one of combining and equalization processing based on at least one of the computed channel estimates and the generated timing reference signals. Aspects of a system for processing RF signals may comprise circuitry that selects at least one of combining and equalization processing based the computed channel estimates and/or generated timing reference signals.11-12-2009
20090279527WIRELESS COMMUNICATION APPARATUS AND DATA MULTIPLEXING METHOD - A wireless transmitting apparatus capable of improving the reception characteristic at a data stream receiving end. In this apparatus, I/Q separating parts (11-12-2009
20080273513METHOD AND APPARATUS FOR UL ACK ALLOCATION - Systems and methodologies are described that facilitate allocation of uplink acknowledgement (ACK) resources for a wireless communication system. Various aspects described herein facilitate explicit creation and transmission of a bundled assignment of downlink communication resources and uplink resources for ACK transmission, thereby facilitating overhead-efficient ACK allocation for users that can communicate pursuant to a persistent resource assignment without requiring scheduling information from an associated control channel. Additionally, indexing schemes for uplink ACK resources are provided herein to facilitate ACK allocation for systems in which both scheduled and persistent users can communicate at a common transmission time interval (TTI).11-06-2008
20090285193METHOD FOR MULTIPLEXING DATA AND CONTROL INFORMATION - A method for multiplexing a data information stream, including a systematic symbol and a non-systematic symbol, and a control information stream of at least three types in a wireless mobile communication system is disclosed. The method includes mapping the data information stream to a resource area so that the systematic symbol is not mapped to a specific resource area to which the control information stream is mapped, and mapping the control information stream to the specific resource area.11-19-2009
20090290568RADIO COMMUNICATION APPARATUS AND RADIO TRANSMISSION METHOD - In order to improve reception performance, while reducing the arithmetic amount of a receiver apparatus in a multi-carrier CDMA system, different weightings are performed for the respective spread codes (chips) included in subcarriers in addition to performing weightings for the respective subcarriers.11-26-2009
20090103507Method, Apparatus and Computer Program Product to Provide Enhanced Reverse Link Medium Access Control in a Multi-Carrier Wireless Communications System - A method determines whether information corresponding to one of a number of carriers indicates the one carrier is loaded or unloaded, wherein the carriers are used for transmission of a MAC flow by the access terminal over a reverse link. Responsively, the transmission resource allocation corresponding to the MAC flow for the one carrier is adjusted based on information corresponding to carrier loading for each of the carriers and on information corresponding to reverse link pilot power for each of the carriers. An access terminal includes a function that determines whether the one is loaded or unloaded. Responsively, the function adjusts transmission resource allocation for the MAC flow for the one carrier based on information of carrier loading for each of the carriers and on information of reverse link pilot power for each of the carriers.04-23-2009
20090168739METHOD AND APPARATUS EMPLOYED IN A USER EQUIPMENT FOR INTERFERENCE SIGNAL CODE POWER AND NOISE VARIANCE ESTIMATION - Method and apparatus employed by a UE for interference signal code power noise variance estimation employing a reduced number of samples utilizing the equation07-02-2009
20100111065METHOD FOR TRANSMITTING DOWNLINK REFERENCE SIGNALS IN A MULTI-ANTENNA WIRELESS COMMUNICATION SYSTEM - A method for transmitting downlink reference signal in a multi-antenna wireless communication system is disclosed. The method includes allocating RSs for a first antenna group to a subframe having a predetermined area with different access levels for user equipments having different access capabilities, pairing RSs for a second antenna group with RSs for the first antenna group, allocating the paired RSs to the predetermined area of the subframe in code division multiplexing, and transmitting the subframe on the downlink.05-06-2010
20080212549Apparatus and method for receiving signal in a communication system - A signal reception method and apparatus for a communication system. One input unit and d09-04-2008
20100061360DEDICATED REFERENCE SIGNAL STRUCTURES FOR SPATIAL MULTIPLEXING BEAMFORMING - A transmitter is for use with a cellular communication network and includes a beamforming generation unit configured to generate a downlink beamforming transmission corresponding to multiple-layer spatial multiplexing and based on a dedicated reference signal pattern. Additionally, the transmitter also includes a transmit unit configured to transmit the downlink beamforming transmission. A receiver is for use with a cellular communication network and includes a receive unit configured to receive a downlink beamforming transmission, and a beamforming processing unit configured to process the downlink beamforming transmission corresponding to multiple-layer spatial multiplexing and based on a dedicated reference signal pattern.03-11-2010
20110268100METHOD AND APPARATUS FOR HIERARCHICAL CODEBOOK DESIGN IN WIRELESS COMMUNICATION - A method for use in a multi-user, multi-input multi-output (MU-MIMO) system includes generating a family of codebooks comprising at least one codebook set, the codebook set comprising a plurality of codebooks organized base on a transmission rank and providing the family of codebooks for use in a multiple description coding (MDC) channel feedback scheme.11-03-2011
20080240065DIGITAL BROADCASTING SYSTEM AND METHOD OF PROCESSING DATA - A service multiplexer of a digital broadcasting system includes a null data generator, a mobile service multiplexer, a main service multiplexer, and a multiplexer. The null data generator may generate null data. The mobile service multiplexer may multiplex and output compression encoded mobile service data, additional data for a mobile service, and null data at a pre-determined first data rate. The main service multiplexer may multiplex and output compression encoded main service data and additional data for a main service at a pre-determined second data rate. The multiplexer may multiplex the output data of the main service multiplexer and the output data of the mobile service multiplexer at a pre-determined third data rate and transmitting the multiplexed data to at least one transmitter located at a remote position.10-02-2008
20090168738CHANNEL WIDTH SWITCHING IN MULTIPLE OBSS SYSTEMS - Briefly, in accordance with one or more embodiments, a device is capable of operating at a first bandwidth or a second bandwidth, and further capable of operating using a communication method intolerant to operation at the first bandwidth. If operation using a communication method intolerant to operation at the first bandwidth is desired, the device transmits an assertion of intolerance of operation at the first bandwidth to one or more devices on the network to cause the one or more devices on the network to switch operation at the second bandwidth.07-02-2009
20080273512SUPERPOSITION CODING IN A WIRELESS COMMUNICATION SYSTEM - A system to communicate a superposition coded packet from a base station to a plurality of remote stations. At the base station, from a list of user candidates for superposition coding a most deserving user may be determined. Those user candidates with a requested data rate less than that of the most deserving user may be eliminated. A superposition coded packet may be compiled from the remaining user candidates. On receipt, the most deserving user may process the superposition coded packet by assuming a predetermined power allocation. Further, if a user successfully in decodes early, power may be re-allocated to another user.11-06-2008
20130010780FAST TIMING ACQUISITION IN CELL SEARCH - Timing acquisition may be performed without typical correlation computations by determining a power of a received signal at certain points in time and using the determined power to identify gaps in the received signal. By determining gaps in the received signal, frame timing may be estimated, particularly in time-division networks where the location of guard periods within a frame is known. Gap detection may thus be used for timing acquisition.01-10-2013
20080279168SYSTEM AND METHOD FOR BROADCASTING OVERHEAD PARAMETERS IN POOR COVERAGE REGIONS - To improve WWAN coverage, an access node broadcasts overhead messages on a first channel covering a first channel environment and a second channel covering a second channel environment within a coverage region. The overhead messages carry network overhead parameters for allowing wireless mobile devices to acquire and maintain traffic channels within the cellular system. The overhead message channels are configured so that a user perceives uninterrupted wireless services while moving through different channel environments in the coverage region. In one embodiment, the overhead message channels are separate physical channels configured with different broadcast parameters to provide coverage in different environments. In another embodiment, the overhead parameter information is segregated into base and extended components that are encoded and layer modulated onto separate logical channels. Using layered modulation, wireless mobile devices can receive base components in poor coverage regions. The base components include overhead parameters for acquiring a WWAN channel.11-13-2008
20080279167RESOURCE MANAGEMENT FOR AD HOC WIRELESS NETWORKS WITH CLUSTER ORGANIZATIONS - An initiator node in a local cluster included in a wireless network receives an admission request to execute an application comprising a set of tasks. If the initiator node is unable to map the set of tasks to nodes included in the local cluster, the local cluster head node forwards the admission request to the cluster head node of successive clusters in the wireless network in order to have at least one node in each of the successive clusters send resource availability information to the initiator node. The initiator node attempts to map the set of tasks to a subset of the nodes from which resource availability information has been received. This is repeated until the initiator node is able to map the set of tasks to a subset of the nodes in the wireless network or until there are no additional clusters to forward the admission request to.11-13-2008
20080291888Method and Device for Carrying Out Flexible Demodulation in an Ofdm-Cdma System - This method for carrying out the flexible demodulation of data modulated following an amplitude modulation in quadrature is used in a communications system employing a code division multiple access technique (CDMA) and an optical frequency division multiplexing (OFDM) using non-binary spread codes. The invention includes steps for determining a simplified expression specific to the logarithm of the likelihood ratio.11-27-2008
20080291887MMSE Channel Estimation in a Communications Receiver - Methods and apparatus are disclosed for calculating a channel response for use in received signal processing. In an exemplary embodiment, a method comprises calculating a channel response correlation matrix based on measured channel responses derived from pilot symbols in a received signal and forming a traffic data correlation matrix based on measurements of traffic symbols in the received signal. The traffic data correlation matrix, the channel response correlation matrix, and the measured channel responses are used in an minimum mean-squared error (MMSE) estimation process to calculate the channel response estimates. In one or more embodiments, the calculated channel response estimates comprise estimates of net channel response corresponding to signal processing delays in a G-RAKE receiver. An exemplary receiver circuit comprises a baseband processor configured to calculate channel response estimates according to one or more of the disclosed methods.11-27-2008
20080304463Reduced search space technique for codeword selection - A method of determining indicators for matrix codewords in a matrix codeword codebook, where the matrix codewords are adapted for communicating information between a transmitter and a receiver. The method includes providing a lookup table that is associated with multiple codewords that are associated with a codebook. The lookup table has m rows, and each row in the lookup table has a one-to-one correspondence with a codeword in the multiple codewords. Each row has p entries and each of the p entries holds a codeword indicator that identifies a codeword in the multiple codewords. The (i,j)12-11-2008
20080304465WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD - A wireless transceiver device employing the code select code division multiple access method includes an encoder configured to execute error correction coding on data having a predetermined number of bits among data inputted from outside, and a code selector configured to select a code corresponding to the data subjected to correction coding. The wireless transceiver device performs wireless communication by use of the data inputted from the outside excluding the data having the predetermined number of bits and by use of the code.12-11-2008
20080212548Terminal Power Control Method - A terminal power control method includes following steps according to the quality of received signal, the terminal obtains quality parameter of received signal, received power of terminal occupying channel, and all the channel power in present cell which have the same carrier frequency and time slot with terminal occupying channel respectively; according to all the channel power in present cell which have the same carrier frequency and time slot with terminal occupying channel, determines the allowable received power minimum of terminal occupying channel; according to the allowable received power minimum of terminal occupying channel, received power of said terminal occupying channel and said received signal quality parameters, generates power control command. Present invention could control powers of signals in different channels, increase the demodulation performance of terminal and the stability of wireless link, and assure the quality of system communication.09-04-2008
20110007729RECEPTION DEVICE, TRANSMISSION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - A reception device which communicates with a transmission device, the reception device including: a reception unit which receives a signal in which a plurality of data signals are multiplexed, from the transmission device; and a data signal detection unit which determines whether detection of transmission data for each data signal from the reception signal received by the reception unit is successful. The reception unit further receives, from the transmission device, a retransmission data signal corresponding to at least one of data signals for which transmission data detection has failed among the plurality of multiplexed data signals. The data signal detection unit determines whether re-detection of the transmission data included in the data signal corresponding to the retransmission data signal among the plurality of multiplexed data signals and a data signal not corresponding to the at least one retransmission data signal, from the reception signal and the retransmission data signal, is successful.01-13-2011
20110007728Broadcast Channel Timing Detection - A broadcast control channel (BCH) transport block is communicated in a cellular communications system having a physical layer in which information is communicated in one or more frames, wherein the BCH transport block represents BCH information. This involves coding (01-13-2011
20080267157Method and apparatus for packet wireless telecommunications - In a wireless telecommunications network, a Code Division Multiple Access (CDMA) scheme is applied to data to encode it. The encoded data transmitted in the uplink using an Orthogonal Frequency Division Multiplexing (OFDM) frame structure including a cyclic prefix (CP). The CDMA encoded data may be time multiplexed with Single Carrier-Frequency Division Multiple Access (SC-FDMA) transmissions. The CDMA transmissions may be used for relatively small payloads, such as those associated with voice traffic and control signals, and the SC-FDMA transmissions used for higher date rate transmissions. This enables autonomous transmission, without scheduling, for smaller payloads. A transmitter includes a selector 10-30-2008
20090129360METHOD FOR CODE CHANNEL ALLOCATION AND METHOD FOR MULTIUSER DETECTION IN A WIRELESS COMMUNICATION SYSTEM - The present invention discloses a method for code channel allocation and related multiuser detection in a wireless communication system. The method for code channel allocation includes: establishing a relation between at least one channel estimation window and a channelization code, wherein the at least one channel estimation window corresponding to the channelization code includes the channel estimation windows corresponding to all the spread spectrum code branches of a node in which the channelization code exists; and performing code channel allocation according to the relation established. In the method for code channel allocation of the invention, there exists a one-to-many relation between the channelization code/channelization code number established and the at least one channel estimation window. Therefore, during the multiuser detection, the channelization code/channelization code number determined via the at least one channel estimation window activated is unique. Thereby, the efficiency of the multiuser detection process may be increased.05-21-2009
20090161650RADIO COMMUNICATION MOBILE STATION APPARATUS AND RADIO COMMUNICATION METHOD - Provided is a mobile station capable of effectively reporting control information in RACH. In the mobile station, a signature selection unit (06-25-2009
20090161646Recursive reduction of channel state feedback - Feedback bandwidth may be reduced in a closed loop MIMO system by Householder transformations and vector quantization using codebooks.06-25-2009
20090185544METHOD FOR PROCESSING CDMA SIGNALS AND A DEVICE HAVING CDMA SIGNAL CAPABILITIES - A device and a method for processing CDMA compliant signals. The method includes receiving input signals; selecting, for each time interval out of multiple evenly length successive time intervals, multiple selected channel processing tasks that are scheduled to be at least partially executed during the time interval; storing input data at a first input buffer and providing data associated with at least one selected processing task from a second input buffer during even time intervals; and storing input data at the second input buffer and providing data associated with at least one selected processing task from the first input buffer during odd time intervals.07-23-2009
20090129357Measuring Received Signal Quality - A method of determining a signal quality parameter in a radio communications device includes: measuring a signal error parameter of a received signal (05-21-2009
20090003302METHOD FOR ADAPTING DATA RATES - Data rates of simultaneous radio transmissions of data are matched for services over a connection between a base station and a subscriber station by determining a service-specific rate matching factor for one of the services based on a steady-state rate matching factor and a dynamic rate matching factor. The dynamic connection-oriented rate matching factor is based on the steady-state matching factor. The dynamic-connection oriented rate matching factor matches a sum of a volume of data for the services over the connection to a volume of data available in a next frame of data. In addition, the data is compressed or expanded for the one of the services based on the corresponding service-specific rate matching factor.01-01-2009
20080316993Method and Apparatus For Implementing Matched Filters in a Wireless Communication System - The present invention discloses a method and apparatus for implementing matched filter in a system using QPSK modulation. In the present invention, a multiplier is changed as a multiplexer by using the characteristic of the pilot sequence (or training sequence) so as to implement the matched filter.12-25-2008
20090219907USER EQUIPMENT IDENTIFICATION SPECIFIC SCRAMBLING - A base station for use in a code division multiple access communication system comprises circuitry configured to process a user equipment identification (UE ID) by ½ rate convolutionally encoding the UE ID to produce a code. The code is used by the base station for scrambling a high speed shared control channel (HS-SCCH). The base station is configured to transmit a wireless signal. The wireless signal provides the user equipment with payload data carried on a high speed physical downlink shared channel (HS-PDSCH). The HS-PDSCH is associated with the HS-SCCH.09-03-2009
20090219906CHANNEL TRANSMISSION APPARATUS AND CHANNEL TRANSMISSION METHOD - A radio physical channel is available to multiple logical channels commonly, and multiple radio physical control channels are provided concomitantly with the radio physical channel and include a commonly usable common control channel. A channel transmission apparatus includes a logical channel type determination unit determining a type of a logical channel, and a channel transmission unit transmitting an identifier of the UE in the radio physical control channel depending on the type of the logical channel. A scheme of identifying the UE in the radio physical control channel is modified depending on the type of the logical channel.09-03-2009
20120127984WIRED AND WIRELESS 4G AND 3G CELLULAR, MOBILE AND RFID SYSTEMS - A method for receiving and processing in a wireless mobile unit a cable connected signal and Adaptive Coding and Modulation (ACM) in a 4G or a 3G wireless system. Transmitting in a mobile cellular unit a wire connected received and processed signal in a wireless transmitter and transmitting in a cable connection of a mobile unit a wireless received signal. Receiving and processing a RFID signal and a data signal into a ultra narrowband (UNB) and a processed ultra wideband (UWB) signal. A Multiple Input Multiple Output (MIMO) antenna system. Processing a signal into a TDMA and a CDMA, Time Constrained Signal (TCS) waveform shaped and Long Response (LR) filtered signal. Receiving and processing a Fiber Optic Communication (FOC) network provided signal and processing a UNB processed signal into a processed spread spectrum signal in a mobile unit.05-24-2012
20100002669SYSTEMS AND METHODS FOR ADAPTIVELY SELECTING A DECODING SCHEME TO DECODE EMBEDDED INFORMATION - A method for selecting a decoding scheme to decode information is described. A codeword that represents at least a first message of a first information type and a second message of a second information type is received. A distribution pattern of symbols associated with the codeword is determined. The distribution pattern is compared to a threshold. A decoding scheme is selected based on the comparison.01-07-2010
20100002671RADIO TRANSMITTING APPARATUS AND RADIO TRANSMITTING METHOD - A radio transmitting apparatus and a radio transmitting method wherein the interference between codes can be reduced and the degradation of preamble detection capability can be prevented. According to these apparatus and method, a signature table storing part (103) that stores a table including a plurality of signatures obtained by classifying the magnitudes of propagation loss levels into levels in accordance with the distances from a base station, associating preamble detection window widths with those levels as classified, and by circularly shifting the pattern of a detection window signature #n corresponding to a signature #n to generate a signature #n+1. A signature selecting part (01-07-2010
20110142026HYBRID PHONE AND METHOD OF ACQUIRING CHANNEL IN THE HYBRID PHONE - A hybrid phone to acquire channels has a first communication mode supporting voice/low-rate data communications and a second communication mode supporting high-rate data communication, and includes a phone control unit having a communication processor controlling voice/data communications according to programs stored in a memory. The communication processor includes a channel acquisition processor attempting to acquire channels for the first and second communication modes. If the channel acquisition processor cannot acquire a channel for the second communication mode within a predetermined time, the channel acquisition processor stops attempting to acquire the channel for the second communication mode and reattempts to acquire the channel for the first communication mode. If the channel acquisition processor acquires the channel for the first communication mode, the channel acquisition processor reattempts to acquire the channel for the second communication mode.06-16-2011
20090201905METHOD AND APPARATUS FOR ESTIMATING CHANNELIZATION CODES IN A WIRELESS TRANSMIT/RECEIVE UNIT - A method and apparatus for estimating channelization codes in a wireless transmit/receive unit (WTRU) using blind code detection (BCD). A WTRU receives communication bursts and detects a midamble in the received burst. A candidate code list is generated in accordance with the detected midamble. The candidate code list includes channelization codes intended for both the intended WTRU and other WTRUs. Active channelization codes among the codes in the candidate list are identified, and the identified codes are forwarded to a multi-user detector (MUD). Since the orthogonal variable spreading factor code maintains the orthogonality between codes of different SF, SFs of other WTRUs follow the SF of the intended WTRU. Moreover, since the data for other WTRUs is not used in symbol processing after MUD, the performance of MUD for the intended WTRU is preserved with the SF ambiguity of other WTRUs.08-13-2009
20090201903SYSTEMS AND METHODS FOR DISTRIBUTED BEAMFORMING BASED ON CARRIER-TO-CAUSED INTERFERENCE - In accordance with a method for distributed beamforming based on carrier to caused interference, a base station may receive channel state information from users. The base station may select a codeword from a codebook. The codeword may be selected so as to maximize a utility function that is based on a signal-to-caused-interference-plus-noise ratio. The base station may use the codeword for beamforming.08-13-2009
20090097465PILOT SIGNAL TRANSMISSION METHOD AND RADIO COMMUNICATION APPARATUS - In a radio communication system, transmission of CAZAC sequences as the pilot signal sequences by using code division multiplexing as at least one of user multiplexing schemes, is done by dividing a system band as a frequency band usable in the system into frequency blocks B04-16-2009
20090245219Active spread code detection - A System, method and computer readable medium for determining an active code set comprises determining code detection statistics for corresponding spread code indices, sorting the determined code detection statistics and the corresponding spread code indices according to amplitudes of the code detection statistics, and determining an active code set based on the sorted code detection statistics and the corresponding sorted spread code indices.10-01-2009
20090201904METHOD FOR ALLOCATING PHYSICAL HYBRID AUTOMATIC REPEAT REQUEST INDICATOR CHANNEL - A method for allocating a physical hybrid ARQ indicator channel (PHICH) is disclosed. The method includes allocating a CDM group according to a cyclic prefix type in consideration of a ratio of the numbers of necessary CDM groups according to spreading factors, and allocating a PHICH to the allocated CDM group. The PHICH includes an ACK/NACK signal multiplexed by code division multiplexing (CDM). Therefore, resources for PHICH transmission are efficiently allocated and a transmission structure can be maintained irrespective of a spreading factor.08-13-2009
20090245220RANDOM ACCESS CHANNEL PREAMBLE - One out of sixteen preamble signatures is selected. A code is produced based on the selected preamble signature. The produced code is phase rotated to produce a processed preamble signature signal. The processed preamble signature signal is used in processing the CDMA RACH signal and the CDMA RACH signal is used to access a CDMA system.10-01-2009
20100014500METHOD FOR PERFORMING AN ADAPTIVE MODULATION AND CODING SCHEME IN MOBILE COMMUNICATION SYSTEM - An efficient link adaptive scheme according to a channel status in a broadband wireless communication system is disclosed. In applying an adaptive modulation and coding (AMC) scheme, modulation and coding selection (MCS) subsets are determined from all or part of MCS set in accordance with a service type or channel status, whereby feedback overhead is reduced and efficient link adaptation is performed in conjunction with a downlink power control scheme.01-21-2010
20080259893Mobile terminal based on W-CDMA system having receive diversity function and system thereof - A mobile terminal having a receive diversity function using a plurality of receive antennas, having a calculation section which combines respective level measurement results of the receive antennas and calculates a level measurement value after being combined as the level measurement result of the mobile terminal.10-23-2008
20080259891MULTIPLE PACKET SOURCE ACKNOWLEDGEMENT - A multi-bit acknowledgement word (10-23-2008
20100054225CHAOTIC SPREADING CODES AND THEIR GENERATION - Generation of a set of spreading codes starts with determining first and second chaotic pseudo-random noise codes having delta-peak-like autocorrelation functions and a low cross-correlation function. Further codes are obtained by the steps: (a) generating a further pseudo-random noise code by computing D03-04-2010
20100150126METHOD FOR ADJUSTING TRANSMITTER OUTPUT POWER - A description is given for a method for operating a wireless multichannel CDMA transmitter, wherein a power metric based on a particular signal configuration is determined, the power metric being determined as a function of power weighting factors used in the channels of the particular signal configuration, and wherein the transmitter output power is adjusted based on the power metric.06-17-2010
20100150127MULTI-CARRIER CODE DIVISION MULTIPLE ACCESS BEAMFORMING - Techniques are provided to performing beamforming on a wireless communication link that employs multi-carrier code division multiple access (MC-CDMA) signal formatting techniques. At a first wireless communication device, a waveform is received at each of a plurality of antennas, where the waveform comprises a multi-carrier code division multiple access ranging transmission from each of one or more of a plurality of second wireless communication devices such that MC-CDMA ranging transmissions from two or more second wireless communication devices overlap in time and frequency. All codes in a set of possible codes that may be used by the second wireless communication devices are searched to determine whether which codes in the set are present in the one or more MC-CDMA ranging transmissions contained in the received waveform. For each of the one or more codes that are determined to be present in the received waveform, estimated channel path responses are computed at each of the plurality of antennas of the first wireless communication device. A downlink beamforming weight vector is computed from the estimated channel path responses computed for a corresponding code.06-17-2010
20090109947Techniques for Frequency-Domain Joint Detection in Wireless Communication Systems - A technique of operating a wireless communication device includes receiving, at a first wireless communication device, respective signals transmitted from multiple second wireless communication devices. Respective channel matrix blocks for each block of the received respective signals are then generated. Finally, respective channel equalizer matrix blocks for each of the respective channel matrix blocks are generated. At least one of the respective channel equalizer matrix blocks is generated without performing a matrix inversion operation on an associated one of the respective channel matrix blocks.04-30-2009
20090316674METHOD AND APPARATUS FOR DEMODULATION OF QAM SIGNAL USING SYMBOL-SPECIFIC AMPLITUDE REFERENCE ESTIMATION - According to the teachings presented herein, “spreading code” knowledge is used in forming amplitude references for QAM demodulation in a DS-CDMA receiver. Here, “spreading code” broadly refers to spreading/channelization codes, scrambling codes, or the product of such codes. Further, these teachings apply to any linear DS-CDMA demodulator, such as Rake, Generalized Rake (G-Rake), or chip equalizer, and to nonlinear demodulators that employ linear filtering, such as decision feedback equalizers (DFEs). Advantageously, the determination of symbol-specific amplitude references relies on shared correlation estimates and/or shared combining weights that are common to two or more symbols of interest, thereby significantly reducing processing requirements as compared to the use of symbol-specific impairment correlation estimates.12-24-2009
20090116470INFORMATION CARRYING SYNCHRONIZATION CODE AND METHOD FOR FRAME TIMING SYNCHRONIZATION - An improved method for conveying data and synchronization information in a telecommunication system is disclosed. The method uses a cyclically permutable code, to which a repetitive structure has been imposed, for carrying the data and synchronization information. The decoding procedure at the receiver then uses this repetitive structure of the code to reduce complexity by first evaluating, by use of hypotheses H05-07-2009
20100182988SIGNAL TRANSMISSION METHOD USING CDM AGAINST THE EFFECT OF CHANNEL ESTIMATION ERROR IN TRANSMIT DIVERSITY SYSTEM - A method of transmitting a signal using code division multiplexing (CDM) in order to reduce the influence of channel estimation error in a multi-input multi-output antenna (MIMO) system using transmit diversity is disclosed. That is, the method of transmitting a signal by a transmitter using a plurality of antennas includes code division multiplexing input symbols using codes according to a predetermined spreading matrix, and transmitting the code division multiplexed symbols via the plurality of antennas according to an Alamouti scheme. At this time, the predetermined spreading matrix is set such that a first component and a second component configuring interference due to channel estimation error have orthogonal phases.07-22-2010
20090116469Reverse link pilot integrated with block codes - A technique for encoding digital communication signals. Data symbols are augmented in pilot symbols inserted at predetermined positions. The pilot augmented sequence is then fed to a deterministic error correction block encoder, such as a turbo product coder, to output a coded sequence. The symbols in the error correction encoded sequence are then rearranged to ensure that the output symbols derived from input pilot symbols are located at regular, predetermined positions. As a result, channel encoding schemes can more easily be used which benefits from power of two length block sizes.05-07-2009
20090213829Expanded signaling capability for network element, user equipment and system - Several mobile station identifiers are allocated to one mobile station, one for each of a plurality of possible signalling channel structures, parameters, or both. When receiving the signalling channels, the mobile station searches for all identifiers allocated for it in the received signalling channels. When it finds one that matches, it may for instance check a mapping table (agreed at the connection setup between mobile station and the network by RRC signalling) to determine what this identifier means. The signalling channel structure, parameters, or both, used in the transmission may be implicitly or explicitly indicated by the identifier. The mobile station (User Equipment) should monitor the signalling channels in the normal way. Instead of looking for only one identifier, however, the mobile station should monitor several identifiers belonging to it.08-27-2009
20080212551WIRELESS DATA TRANSMISSION METHOD, TRANSMITTING SYSTEM, AND RECEIVING SYSTEM - A wireless data transmission method is disclosed, in which a transmitter buffers current RLC layer data. The method includes the following steps: the transmitter transmits the current RLC layer data to a receiver; receives a data-receiving packet indicating that the data is incorrectly received, the physical layer of the receiver generated and fed back by the physical layer of the receiver if a physical layer of the receiver determines that the data is incorrectly received; and transmits the buffered current RLC layer data to the receiver. A transmitting system and a receiving system are further disclosed. The method of the present disclosure may enhance the data transmission speed over the RLC layer.09-04-2008
20100177758Automatic Handling Of Neighbour Cells - A method for a cellular system with cells which can accommodate user terminals, UEs and respective base stations, and also an RNC for the control of the base stations, comprising maintaining a Neighbour Cell list and an Active Set list in the RNC, and letting a UE in a cell measure and report transmissions from Neighbour Cells to its RNC. The method comprises letting the UE make Detected Set measurements and report them to its RNC. The method also comprises letting the RNC maintain a third list of parameters for other cells, and letting the RNC use received Detected Set measurement reports from a UE and said third list to determine the identity of cells of a Detected Set, and using the identified cells in the Detected Set report to update the first UE's Active Set.07-15-2010
20100220706Apparatus, Module, And Method For Implementing Communications Functions - A system acquisition module and corresponding method for facilitating PN code searching which has a PN sequence generator configurable to generate a plurality of PN sequences. The module and method also includes computational units configurable to correlate each received signal sample of a plurality of received signal samples with a corresponding PN sequence of the plurality of PN sequences, and further configurable to provide other hardware resources. A number of computational units from the plurality of computational units are selectively configured to correlate the received signal samples with the PN sequences—the number depending upon availability of the plurality of computational units from providing the other hardware resources. In another embodiment, a communication device having a system acquisition function is provided which includes the system acquisition module and a receiver configured to receive signals, where a plurality of configurable computational units are selectively configurable to implement the PN sequence generator.09-02-2010
20100296502I-Q MISMATCH COMPENSATION - Techniques for compensating for I-Q mismatch in a communications receiver. In an exemplary embodiment, incoming I and Q samples are adjusted by multiplying with certain compensation coefficients to generate mismatch-compensated I and Q samples. The compensation coefficients may themselves be calculated and iteratively refined from the mismatch-compensated I and Q samples. Further techniques for partitioning the adjustment and estimation functions among computational hardware are disclosed. In an exemplary embodiment, estimation may be restricted to only those segments of the incoming I and Q samples that fulfill certain conditions, e.g., segments of the incoming I and Q samples known to be statistically uncorrelated and/or to have equal average energy.11-25-2010
20120127983ELECTRONIC DEVICE AND METHOD FOR TRANSMITTING WARNING INFORMATION, AND SECURITY MONITORING SYSTEM - An electronic device for transmitting warning information to a monitoring device is provided. The monitoring device includes a radio frequency transmitting unit transmitting a wireless signal. The electronic device includes a radio frequency receiving unit, a detector, a wireless transmitting unit, and a processor. The radio frequency receiving unit receives the wireless signal transmitted by the radio frequency transmitting unit when the distance between the radio frequency transmitting unit and the radio frequency receiving unit is less than a preset value. The detector detects the movement or the oscillation of the electronic device. The radio frequency receiving unit generates an anomalous potential to signal the processor to enable the detector when not receiving the wireless signal transmitted through the radio frequency transmitting unit. The processor transmits the warning information to the monitoring device through the wireless transmitting unit when the detector detects that the electronic device moves or oscillates.05-24-2012
20100238914Adaptive Coding and Modulation with MIMO Wireless and Wired Communication - A system and method for processing Adaptive Coding and Modulation (ACM) in Multiple Input Multiple Output (MIMO) Wireless and Wired Communication. The ACM and MIMO system is connected with Infrared and with Radio Frequency Identification systems and sensors as well as with wired Fiber Optic Communication (FOC) and wireless cellular land based or satellite systems. A received Global Positioning System (GPS) signal is also used for processing and transmission in single or in cascaded communication systems. A modulator and transmitter which comprise cascaded hybrid systems, including a cascaded GSM or EDGE, of cascaded infrared (IR) or GSM or CDMA or TDMA or UMTS systems and contain Radio Frequency identification (RFID) signals or sensor or infrared signals.09-23-2010
20100238913Adaptive Precoding Codebooks for Wireless Communications - Adaptive precoding codebooks are described. In one embodiment, the method of wireless communication includes reading at least a rank-2 baseline codebook having codewords representing precoding matrices. An adaptive codebook is generated by multiplying a first column of the codeword with a first transform matrix calculated from a channel correlation matrix, and multiplying a second column of the codeword with a second transform matrix calculated from the channel correlation matrix. The first and the second transform matrices are orthogonal.09-23-2010
20100208717Apparatus and method for supporting frequency rearrangement in wireless communication system - A base station includes a center frequency setting unit, a local oscillator, a baseband processor, and an RF processor. In the event of a frequency band change, the center frequency setting unit sets a center frequency of a use frequency channel to have a predetermined offset value with respect to a center frequency before the frequency band change. The local oscillator generates an LO frequency signal according to the center frequency set by the center frequency setting unit. The baseband processor generates a downlink baseband signal. The RF processor uses the LO frequency signal to convert the downlink baseband signal into an RF signal prior to transmission.08-19-2010
20100020782ARQ WITH ADAPTIVE MODULATION FOR COMMUNICATION SYSTEMS - A method and apparatus for improving performance in communication systems is provided. In order to maintain the real time constraints of the communication systems, time intervals and indication signals are used in various implementations to indicate and/or force subsequent transmissions of encoded data. An indication signal can include, for example, modulation modification information for subsequent transmissions. In various other implementations, a quality metric is computed for the communication channel and is used to provide modified modulation scheme information to be subsequently used on the communication channel.01-28-2010
20090252139Radio-Access Method for Mobile-Radio Networks, Related Networks and Computer Program Product - A mobile-radio network includes radio base stations providing radio coverage to the users of the network via antenna elements, wherein the antenna elements are equipped with at least one first communication channel and at least one second communication channel. The first communication channel provides a first layer of individual microcell radio coverage for the antenna elements. The second communication channel is made common to groups of the antenna elements and provides a second layer of virtual macrocell radio coverage, wherein the coverage of each virtual macrocell aggregates the microcell radio coverages of the antenna elements included in the respective group.10-08-2009
20090073951System and Method for Using CDMA PN Offset to Maintain Instrument Timing Reference - A system and method is provided enabling identification of different PN offsets values for CDMA signals without access to a GPS signal, such as when making measurements within indoor environments. When a timing reference, such as that provided by a GPS signal, is lost, the frame boundary timestamp of the CDMA signal itself is used. The parameters of the strongest available PN offset are used. The timing error is determined and the new timing reference timestamp is estimated. The strongest PN is used as the time reference and tau is corrected for. In further embodiments, a user may be able to provide identifying information allowing the estimated timing reference timestamp to be determined even when a GPS signal was never established for providing an initial timing reference.03-19-2009
20110032922Highly Linear and Very Low-Noise Down-Conversion Mixer for Extracting Weak Signals in the Presence of Very Strong Unwanted Signals - A method and system for wireless communication is provided and may include mitigating blocker signals in transmitted RF signals in a wireless device including a transmitter front end. The mitigation may include up-converting a baseband signal, mixing the up-converted baseband signal with a feedback signal, and amplifying the mixed up-converted baseband signal and the feedback signal to generate an output signal. The feedback signal may be generated by down-converting the output signal, low-pass filtering the down-converted output signal, and up-converting the filtered down-converted signal for the summing. The blocker signals may correspond to receive frequencies for the wireless device and may be converted to DC via the down-converting. The wireless devices may operate in accordance with at least a CDMA standard. The mixed up-converted baseband signal and the feedback signal may be amplified utilizing a source follower amplifier, where the gain and/or linearity may be configured by varying coupling capacitors.02-10-2011
20110032919METHOD OF OPTIMISING THE RANK OF A MMSE CHANNEL EQUALISER - An estimator of the throughput of a channel equalizer in a wireless receiver, wherein the estimator is dependent on a number of NACK messages transmitted by the receiver.02-10-2011
20110032920Apparatus and Method for Estimating a Frequency Shift and a Time Shift - An apparatus for estimating a frequency shift and a time shift in a CDMA signal based on a CDMA code associated with a CDMA signal, having a modulation removal stage for removing a data modulation from the CDMA signal to obtain a modified CDMA signal. The apparatus further has a frequency domain transformer for transforming the modified CDMA signal to the frequency domain to obtain a modified CDMA spectrum and a frequency shift detector for detecting a group of candidate frequency shifts based on the modified CDMA spectrum. The apparatus further has a processing stage for processing the CDMA signal and a candidate frequency shift to obtain the time shift, when a combination of the CDMA signal, the CDMA code and the candidate frequency shift fulfills an optimization criterion and for selecting the candidate frequency shift as the frequency shift.02-10-2011
20090168740METHOD FOR CODING AND TRANSMITTING TRANSPORT FORMAT COMBINATION INDICATOR - A method and matrixes for transmitting an transport format combination indicator is disclosed. The matrixes according to the invention comprising five column vectors of 32 elements of binary code derived from OVSF codes which are to be multiplied to the lower bits of a TFCI and one column vector of 32 elements of 1 when (32,6) codes are used.07-02-2009
20080310384Ranging apparatus and method in a wireless mobile communication system - A ranging apparatus and method of a mobile station in a wireless mobile communication system are provided, in which the mobile station completes a code-based ranging with a base station, transmits a ranging request message to the base station, increases a first count by 1 if the mobile station fails to receive a response message to the ranging request message from the base station, requests a code-based ranging with the base station if the increased first count is less than or equal to a predetermined first threshold, increases the first count by 1 if the mobile station fails to receive a response message to the code-based ranging request from the base station, and repeats the code-based ranging request and increases the first count by 1 for each of the code-based ranging requests that the mobile station fails to receive a response message from the base station until the first count exceeds the first threshold.12-18-2008
20080267156Wireless Communication Unit and Method for Processing a Code Division Multiple Access Signal - A method of processing a code division multiple access signal comprises receiving a CDMA signal; processing the received CDMA signal with a CDMA detector; and extracting control channel information from the processed signal. The extracted control channel information is used to equalize a subsequent received CDMA signal, to make estimation of equalizer coefficients more reliable and increasing average data throughput.10-30-2008
20100322224SERVER, TERMINAL AND METHOD FOR END TO END CHANNEL CAPACITY ESTIMATION IN HIGH SPEED DOWNLINK PACKET ACCESS NETWORK - A server and a terminal enabling channel capacity estimation in a High-Speed Downlink Packet Access (HSDPA) network and a method of controlling the server and the terminal are provided. More particularly, when transmitting data between both terminals in an HSDPA network, a server end may transmit a packet pair of the same size and a client end may measure a time difference between the packet pair and thereby proceed filtering. Through this, it is possible to estimate the channel capacity. Therefore, it is possible to prevent data transmission from exceeding the channel capacity in the HSDPA to thereby prevent a packet loss and to effectively use a channel.12-23-2010
20100322223BEAM FORMING METHOD AND APPARATUS - The present invention relates to a method of forming a random beam, and a beam forming apparatus. A quantization preprocessor and a random unitary matrix having a predetermined pattern are used to form a beam on a mobile terminal. A base station forms a beam using a codeword index of a quantization codebook received from a mobile terminal and channel quality information corresponding to the codeword index, and the mobile terminal generates the codeword index and the channel quality information using pilot signals generated by the base station. The number of pilot signals is equal to the number of transmitting antennas. Therefore, a codebook that has been known to both the mobile terminal and the base station is used, and the mobile terminal can select the codeword index for quantization, which makes it possible to selectively give diversity and thus improve the system efficiency.12-23-2010
20110002321RADIO TRANSMISSION DEVICE, AND RADIO TRANSMISSION METHOD - Provided are a radio transmission device and a radio transmission method, which prevent the deterioration of a preamble detecting performance while reducing the collision probability of a RACH. In this radio transmission device, a Signature table storage unit (01-06-2011
20110243119Method and Apparatus of Fast System Selection in the TD-SCDMA and GSM Multimode Terminal - Certain aspects of the present disclosure propose techniques and apparatus of fast system selection for a multimode terminal that can support both Time Division Synchronous Code Division Multiple Access (TD-SCDMA) technology and Global System for Mobile communications (GSM) technology.10-06-2011
20110019657Method and Arrangement for Adjusting Time Alignment of a Sampled Data Stream - A method of adjusting time alignment of a sampled data stream is disclosed. The method comprises transferring the sampled data stream from a baseband subsystem to a digital interface, transferring the sampled data stream from the digital interface to a digital radio comprising a pulse shaping filter modulator, modulating the sampled data stream by using the pulse shaping filter modulator, and transmitting the modulated sampled data stream. The method further comprises transferring a time adjustment control signal from the baseband subsystem to the digital radio, and the modulating step comprises a step of adjusting, based on the time adjustment control signal, the time alignment of the sampled data stream using a sample resolution. Corresponding computer program product, arrangement, and electronic device are also disclosed.01-27-2011
20090067401METHOD AND DEVICE FOR RECOGNIZING A SYNCHRONIZATION MESSAGE FROM A WIRELESS TELECOMMUNICATION DEVICE - A method of recognizing a synchronization message from a wireless telecommunications device comprising the steps of: dividing a series of known identification codes into a plurality of sections; processing and storing the sections of the known identification codes; dividing a signal received from the wireless telecommunications device into a plurality of sections; processing the sections of the received signal; and comparing the sections of the received signal with the sections of the known identification codes.03-12-2009
20110019655METHOD FOR FAST TRANSMISSION TYPE SELECTION IN WCDMA UMTS - In accordance with the exemplary embodiments of the invention there is disclosed a method, apparatus, and executable computer program for receiving information including preamble scrambling codes associated with transmission types in a random access procedure, selecting an appropriate preamble scrambling code based on the received information, and placing the selected preamble scrambling code in a preamble for a random access procedure. Further in accordance with the exemplary embodiments of the invention there is disclosed a method, apparatus, and executable computer programs for decoding a preamble scrambling code of a random access channel transmission received from a user equipment, and determining a transmission type with which the scrambling code is associated.01-27-2011
20110032923MOBILE SWITCHING CENTER PLATFORM HAVING INTERFACES WITH FUNCTIONALITIES DEFINED BY AN ARCHITECTURE THAT PROVIDES PACKET-SWITCHED MULTIMEDIA SUBSCRIBER SERVICES - A mobile switching center platform includes a circuit-switched switch to establish circuit-switched communications sessions on behalf of at least one wireless terminal. The mobile switching platform further includes interfaces having functionalities defined by an architecture that provides packet-switched multimedia subscriber services, wherein at least one of the interfaces is to enable the mobile switching center platform to communicate with a packet-switched subscriber access network through which the mobile switching center platform establishes packet-switched communications sessions with at least one terminal device.02-10-2011
20110032921COMMUNICATION SYSTEM USING OFDM FOR ONE DIRECTION AND DSSS FOR ANOTHER DIRECTION - A method and apparatus for wireless communication are described. In one embodiment, a method for communicating with a subscriber comprises transmitting orthogonal frequency domain multiplexing (OFDM) signals to the subscriber, and receiving direct-sequence spread spectrum (DSSS) signals from the subscriber.02-10-2011
20090034501Multiple Antenna Servicing by Multibranch PSYNC detection module - A wireless terminal is operable to receive a Wideband Code Division Multiple Access (WCDMA) signal from a base station and includes clock circuitry, a wireless interface, and a Primary Synchronization (PSYNC) module. The clock circuitry generates a wireless terminal clock using a wireless terminal oscillator. The wireless interface receives the WCDMA signal, which is produced by the base station using a base station clock that is produced using a base station oscillator that is more accurate than the wireless terminal oscillator. The PSYNC module includes a plurality of PSYNC correlation branches. Each PSYNC correlation branch phase rotates the WCDMA signal based upon a respective frequency offset, correlates the phase rotated WCDMA signal with a Primary Synchronization Channel (PSCH) code over a plurality of sampling positions, and produces PSYNC correlation energies based upon the correlations for each of the plurality of sampling positions.02-05-2009
20110128951METHOD AND APPARATUS FOR ENHANCED UPLINK MULTIPLEXING - A method and apparatus for multiplexing are disclosed. Data is received over a plurality of logical channels. Data from the plurality of logical channels is multiplexed into a medium access control (MAC) protocol data unit (PDU) based on a priority associated with each of the plurality of the logical channels. The MAC PDU is transmitted over an uplink transport channel.06-02-2011
20100226357Differential codebook for a wireless network, MIMO beamforming system using same, and method of reducing a quantization error in a MIMO beamforming system for a wireless network using same - A differential codebook for a wireless network includes a plurality of codewords and [e09-09-2010
20110085537EFFICIENT SIGNALING FOR CLOSED-LOOP TRANSMIT DIVERSITY - Techniques for encoding a phase adjustment for a feedback signal in a closed-loop transmit diversity system. In an aspect, codewords for the phase adjustments are chosen according to a variable-length prefix code. The prefix code aspect allows the codewords to be transmitted in sequence on the feedback channel without being separated by “commas” or demarcation symbols. The variable-length aspect provides a variety of coarse and fine phase adjustment quantization step sizes to accommodate multiple different channel scenarios. In an aspect, the length of the codewords may be further optimized according to the Huffman encoding algorithm.04-14-2011
20090310587GENERIC PARALLEL SPREADING - Method for transmitting a wideband code division multiplex output signal at a given chip-rate corresponding to a plurality of combined physical radio links for respective user entities, comprising the steps of performing parallel symbol and code generation, parallel modulation, parallel spreading, each enhanced multiplex rate cycle providing a first number of parallel spread chip values, thus forming a first number of spread chip value streams. The enhanced multiplex rate being a second number greater than the chip rate of the output signal, combining the physical radio links over a number of segments corresponding to the second number at the enhanced multiplex rate in multiplex fashion, extending the combination of the physical radio links during a time corresponding to a third number of chips, causing a combined plurality of physical radio links, buffering the results so as to establish a complex signal at chip rate to the air transmission antenna.12-17-2009
20090129358Communication Apparatus, Communication Method and Program - A communication apparatus, which has a means for allowing communication to be performed via one or more lines, decides a timing at which to perform a reconnection, taking the statuses of the lines into account. When the timing at which to perform the reconnection has been decided, a line is disconnected once, and then the line is reconnected. This allows the communication apparatus to attempt to switch to a higher-rate communication mode, maintain the connectivity of the communication apparatus and to secure a higher-rate communication mode line, whereby the communication apparatus can use an increased number of bands as a whole.05-21-2009
20110176532 METHOD OF TRANSMITTING DIGITAL SIGNALS, CORRESPONDING TRANSMISSION SYSTEM, SIGNAL AND COMPUTER PROGRAM PRODUCT THEREFOR - Digital signals are transmitted over a communication channel having a given bandwidth, by simultaneously transmitting: one or more Spread Spectrum signals, such as, Code Division Multiple Access signals, wherein the spectrum of the Spread Spectrum signals exhibits roll-off transition bands at the boundaries of the spectrum, and one or more multi-carrier transmission signals, such as, Orthogonal Frequency Division Multiplexing signals, which are transmitted over the transition bands of the Spread Spectrum signals07-21-2011
20090028125METHOD FOR OPERATING ENHANCED RLC ENTITY AND RNC ENTITY FOR WCDMA AND SYSTEM THEREOF - A method for operating an RLC entity and a MAC entity in a Universal Mobile Telecommunications System (UMTS), the European IMT-2000 system. A format of a MAC-has PDU is optimized in a MAC-hs entity, so that a large number of users can be supported with using less resources when a VoIP service is provided in one cell.01-29-2009
20090028124Symbol-Level Adaptation Method for Equalizer Coefficients, Memory, Equalizer and Receiver for Implementing the Method - A symbol-level adaptation method to adapt at least one coefficient of an equalizer, wherein the method comprises the steps of: 01-29-2009
20110096766CURRENT CONSUMPTION REDUCTION WITH LOW POWER AMPLIFIER - A transceiver circuit and a method in a wireless communication network are provided, where a signal power level for a signal received at the transceiver circuit is measured and compared to a predefined threshold power level. At least two groups of power amplifiers may be used, where one group is optimized for high efficiency above the predefined threshold power level, and one group is optimized for high efficiency below the predefined threshold power level. The amplifiers may be used to amplify the received signal depending on the signal power level in relation to the predefined power threshold level. The signal may then be filtered by duplex filters and forwarded to a diversity antenna or a main antenna where it is transmitted over an air interface.04-28-2011
20120120941METHOD AND APPARATUS FOR PARAMETER UPDATE IN AN UPLINK BASEBAND CHIP AT NODEB SIDE OF A WCDMA SYSTEM - Disclosed in the present invention is a method for parameter update in an uplink baseband chip at NodeB side of a WCDMA system, comprising: a software module sending an update parameter required by RAKE demodulation and a corresponding task request thereof to a main control module, with the task request including effective time of the update parameter; the main control module instructing a task execution module to use the update parameter at the effective time; and the task execution module using the update parameter in real time once receiving the instruction. The present invention further provides an apparatus for parameter update in an uplink baseband chip at NodeB side of a WCDMA system. The technical solution of the present invention has the following advantages: flexible parameter configuration, accurate update time, high integrity, and good flexibility.05-17-2012
20110075648METHOD AND SYSTEM FOR WCDMA/HSDOA TIMING ADJUSTMENT - Aspects of a method and system for WCDMA/HSDPA timing adjustment may include adjusting an uplink transmission timing of a signal for transmission by a large adjustment step, utilizing a plurality of smaller adjustment steps, to generate an adjusted transmission signal. The transmission signal may be upsampled to a rate corresponding to the smaller adjustment step, which may generate an upsampled transmission signal. An adjusted upsampled transmission signal may be generated by inserting one or more of the smaller adjustment steps via one or more extra samples into the upsampled transmission signal to generate a delay, or removing one or more samples from the upsampled transmission signal to generate an advance. The adjusted upsampled transmission signal may be filtered and downsampled to generate the adjusted transmission signal.03-31-2011
20110069692DEVICE AND METHOD FOR PARALLELIZING MULTICARRIER DEMODULATION - A device for demodulating a stream of data symbols being part of a multicarrier data stream is disclosed. In one aspect, the device includes a platform capable of running processes in parallel. On the platform a parallel code is mapped for demodulating the data symbols. The parallel code is arranged for determining, from at least one previously processed symbol, information for demodulating a currently processed data symbol of the multicarrier data stream. The device may further includes a parallelization module for parallelizing symbols or groups of symbols of the stream of data symbols code according to a modulo-N symbol splitting of the stream of data symbols, wherein N denotes the number of processes that can run in parallel on the platform. The parallelization module is arranged for applying the parallelized stream to the parallel code.03-24-2011
20100303052APPARATUS, METHOD AND COMPUTER PROGRAM PRODUCT FOR SIGNALING MODULATION AND CODING SCHEME - A first parameter such as an indicator of modulation and coding scheme MCS for a first shared channel SCH codeword and a second parameter for a second SCH codeword are determined. From a locally stored mapping rule a bit sequence that explicitly indicates the first parameter and that implicitly indicates the second parameter is chosen, and a first control channel CCH codeword is transmitted with the explicit bit sequence that explicitly indicates the first parameter for the first SCH codeword and a second CCH codeword is sent companion to the first CCH codeword, wherein the second parameter for the second SCH codeword is implicitly indicated by the explicit bit sequence of the first CCH codeword. The receiving party determines the second parameter by its own locally stored mapping rule, and an indicator in each CCH codeword may be used to inform the receiver that the two (or more) CCH codewords are associated with one another and to use its mapping rule to determine the second parameter.12-02-2010
20100254366DCS/WCDMA Dual Frequency Synthesizer And A General Dual Frequency Synthesizer - The invention discloses a DCS/WCDMA dual frequency multiplexer. On one hand, the multiplexer utilizes distributed parameter type capacitors in place of conventionally used capacitors. On the other hand, within the multiplexer, a direct circuit and a RF circuit are isolated from each other physically. All components including capacitors co-exist together physically. Similarly, the invention further discloses a dual frequency multiplexer with large application range. It also utilizes the distributed parameter type capacitors like the DCS/WCDMA dual frequency multiplexer. Because the invention has redesigned the entire construction of the multiplexer, it results good effects such as small size, less differential loss, large power capacity, as well as high isolation degree between circuits.10-07-2010
20100260161APPARATUS AND METHODS FOR INTERLEAVING IN A FORWARD LINK ONLY SYSTEM - Methods and devices for encoding and interleaving data packets for broadcast and for de-interleaving and decoding data packets in a communication system eliminate detrimental biasing effects by using pseudo-random M-sequence bit encoding as part of the turbo encoding and decoding. The use of pseudo-random M-sequence bit encoding mitigates biasing effects that may otherwise be introduced if conventional r-c interleaving is applied to long turbo encoded data which would degrade reception in the presence of broadcast interference.10-14-2010
20100098046RADIO TRANSMISSION APPARATUS AND RADIO RECEPTION APPARATUS IN A CDMA COMMUNICATION SYSTEM - A reception section receives a signal on which signals of channels are multiplexed in a same frequency band through an antenna. A separation section separates a part used for correlation value calculation in the reception signal. Correlation sections create delay profiles by calculating a correlation value using a first basic code and a second basic code for the signals after the separation, respectively. A comparison/channel estimation section cycles each delay profile so that the delay profiles match in a section in which the path of the channel to be detected appears when there is no propagation delay and detects a quasi-matching path in each delay profile after the cycling.04-22-2010
20100098043CONTENTION-BASED RANDOM ACCESS METHOD WITH AUTONOMOUS CARRIER SELECTION - The method and apparatus described herein controls transmission from a plurality of user terminals to an access point on a random access channel in a wireless communication system. An access point determines an allowed information rate for each user terminal and transmits a rate control parameter indicative of the allowed information rates to the user terminals. The access point also computes a packet transmission probability and transmits the packet transmission probability to the use terminals on a common control channel. The packet transmission probability controls the number of user terminals that transmit in a given time slot to reduce collisions and increase the departure rate. The user terminals selectively transmit one or more packets to the access point in a time slot on the random access channel based on the allowed information rate and the packet transmission probability.04-22-2010
20100098044METHODS FOR POLARIZATION-BASED INTERFERENCE MITIGATION - A method for mitigating interference for a received wireless signal comprises at least three steps. The method comprises receiving a wireless signal with a receiver device. The wireless signal includes at least an interference signal and a desired signal. The method further comprises breaking the received wireless signal into sub-bands; and filtering the received wireless signal with a polarization filter, in order to separate the interference signal from the desired signal.04-22-2010
20100098045Apparatus, System, And Method For Communication - A communication apparatus communicates with a receiving apparatus which receives, combines and decodes first and second data sections as part of a coded data block. The communication apparatus includes a controller that controls the ratio of how much part of the second data section overlaps with the first data section according to a difference of communication quality between a first resource used to transmit the first data section and a second resource used to transmit the second data section.04-22-2010
20100098042USING THE SAME MULTIPLEXED RADIO RESOURCE FOR PILOT AND INFORMATION SIGNALS - A method and apparatus for using the same multiplexed radio resource to simultaneously transmit a pilot sequence and an information signal is described herein. After traveling through a multi-path propagation channel, a receiver receives the transmitted pilot and information signals, correlates the received signal with the known pilot sequence to determine one or more correlation values, and estimates the multi-path propagation channel based on the correlation values. The receiver uses the channel estimates to process the received signal to remove the pilot sequence from the information signal. By using the same multiplexed radio resource to transmit both the pilot sequence and the user information signal, the present invention enables more radio resources to be allocated to the information signal without compromising pilot-based channel estimation, and provides more regular access to the transmitted pilot sequence at the receiver.04-22-2010
20100002673METHOD OF CONTROLLING REVERSE TRANSMISSION IN A MOBILE COMMUNICATION SYSTEM - An apparatus and method for controlling a reverse data rate in a mobile station. The method includes determining whether the mobile station has sufficient power to transmit at an increased data rate compared to a current data rate, and transmitting a determination result to a base station.01-07-2010
20100002672SIGNALING FORMAT FOR WIRELESS COMMUNICATIONS - Methods, devices and systems for wireless communication generate signals by determining whether legacy devices are within a proximal region of the wireless communication. When at least one legacy device is within the proximal region, a frame is formatted to include a preamble field, a signal field, and a data field. Further, the uncoded bits are encoded according to a coding format. The coding format is determined according to bits in the preamble and applicable sub-field lengths.01-07-2010
20080247374RECEIVING STATION FOR CDMA WIRELESS SYSTEM AND METHOD - A communication station, such as a UE or Node B of a 3GPP system, configured to receive channelization coded signals on physical channels of at least one composite channel within timeslots of a system time frame. The actual number of channelization codes received for the composite channel within a system time frame is determined. The transmitted channelization codes are then identified by performing a channelization code identification algorithm based on the determined number.10-09-2008
20080304464Low complexity precoding matrix selection - A method of determining indices for matrix codewords in a matrix codeword codebook. The matrix codewords are adapted for communicating information between a transmitter and a receiver. The method includes retrieving from temporary storage, an eigenmode representation for a communications channel, where the eigenmode representation is based upon on a received signal precoded by a first matrix codeword. The method also includes performing a test on multiple vector codewords to identify a first vector codeword among the multiple vector codewords, where the test includes determining a relationship between the first vector codeword and the representation of an eigenmode. The first vector codeword is associated with a first vector codeword index that identifies the first vector codeword. The method also includes generating a matrix codeword index associated with a second matrix codeword in the matrix codeword codebook. The matrix codeword index is based upon the first vector codeword index, and the order of the first vector codeword is different from the order of the second matrix codeword.12-11-2008
20090022134METHOD FOR OPERATING ENHANCED RLC ENTITY AND RNC ENTITY FOR WCDMA AND SYSTEM THEREOF - A method for operating an RLC entity and a MAC entity in a Universal Mobile Telecommunications System (UMTS), the European IMT-2000 system. A format of a MAC-hs PDU is optimized in a MAC-hs entity, so that a large number of users can be supported with using less resources when a VoIP service is provided in one cell.01-22-2009
20090022133EFFICIENT ENCODING OF CONTROL SIGNALING FOR COMMUNICATION SYSTEMS WITH SCHEDULING AND LINK - The invention relates to a method of sending control information from a first node to a second node in a communications system providing a plurality of resource units for the transmission of data. The control information is sent by use of a code book comprising at least one code word identifying control information relating to data transmission over a resource unit. The code book is dynamically updated by means of repeatedly transmitting an updated version of code book information from the first node to the second node. The invention also relates to a first communications node comprising means for transmitting control information to a second node. The means for transmitting control information is adapted to transmitting the control information by use of a code book; and to repeatedly transmitting an updated version of code book information in order to achieve that the code book is dynamic.01-22-2009
20090201902UPLINK CHANNEL RECEIVING AND TRANSMITTING APPARATUSES AND METHODS - A receiving apparatus receives control, pilot and data channels in an uplink. The apparatus includes a data-channel receiving unit for receiving the pilot channel in an antenna gain pattern of a multi-beam having multiple fixed directional beams with respectively different fixed directional directions or of a variable directional beam having a directional direction varying in accordance with the position of a mobile terminal; and a data-channel receiving unit for receiving the data channel in an antenna gain pattern of a multi-beam or a variable directional beam.08-13-2009
20080253346MAC ARCHITECTURE IN WIRELESS COMMUNICATION SYSTEMS SUPPORTING H-ARQ - A medium access control-high speed (MAC-hs) comprises a hybrid automatic repeat request (H-ARQ) device configured to receive data blocks over a wideband-code division multiple access (W-CDMA) high speed-downlink shared channel (HS-DSCH). The H-ARQ device generates an acknowledgement (ACK) or negative acknowledgement (NYACK) for each said data block received. Each received data block having a transmission sequence number. The H-ARQ device receives a new transmission instead of a pending retransmission at any time. At least one reordering device has an input configured to receive an output of the H-ARQ device and the at least one reordering device configured to reorder the received data blocks based on each received data block's transmission sequence number (TSN). Received data blocks are immediately forwarded for processing for higher layers when the received data blocks are received in sequence.10-16-2008
20080205367Reception Apparatus, Path Detection Apparatus, Method Thereof, and Computer Product used in CDMA System Base Station - A reception apparatus used by a Code Division Multiple Access (CDMA) system base station includes a path detection unit performing path detection on a selected user equipment. Also included is a deriving unit using the detected path timing to despread incoming signals from said selected user equipment and deriving one or more multipath components. Also included is a providing unit Rake combining said one or more multipath components to provide a demodulation signal. Also included is a scheduling unit selecting one or more user equipments at predetermined intervals according to one or more judgment criteria and reporting to the path detection unit. The one or more judgment criteria includes criteria for selecting the user equipment with the demodulation signal which has a higher fading frequency.08-28-2008
20080205368Base Station and Mobile Unit and Method for Controlling Them - A base station and a mobile unit and method for controlling them can retransmit a request for transition without any useless transmission. The base station receives from the mobile unit a request for transition of the mobile unit to a semi connected state in which the mobile unit comes into a power saving state, while holding a mobile unit identifier assigned for identifying the mobile unit by the base station, and the base station determines the state of the base station in response to the request. The base station transmits to the mobile unit a response to the request together with a reason for disallowance attached to the response when the request for transition is not allowable as a result of the determination of the state of the base station. The mobile unit controls the transmission of the request for transition according to the reason for disallowance.08-28-2008
20090116468METHOD FOR IMPLEMENTING HSDPA FOR TD-SCDMA - The present invention discloses a method for implementing multi-carrier HSDPA for TD-SCDMA system, comprises: establishing a multi-carrier cell at the network side, wherein multiple carrier resources in the multi-carrier cell being managed and allocated as a whole at the network side; configuring HS-PDSCH resources on at least one of the carriers of the multi-carrier cell, and at least one pair of HS-SCCH and HS-SICH physical channel resources on at least one of the carriers, at the same time, creating a MAC-hs to manage the channel resources on the carriers and the configuration of the MAC-hs entity itself; the network side allocating HSDPA resources to a user terminal, and sending the HSDPA resources to the user terminal; and the network side dynamically allocating the HSDPA resources on at least one carrier for the user terminal to transmit service data.05-07-2009
20110164603METHOD AND A DEVICE FOR GAINING AND MAINTAINING CONTROL OF THE TRAFFIC FROM A RADIO BASE STATION IN A CELLULAR TELEPHONY SYSTEM - A method for letting a temporary radio base station (RBS, 07-07-2011
20090161648TD-SCDMA UPLINK PROCESSING - A wireless device has a BRP-CRP interface that includes a dual-port frame memory having a first access port and a second access port in which data can be written to the dual-port frame memory through the first access port at the same time that data is read from the dual-port frame memory through the second access port. A bit rate processor performs bit rate processing on input data and writes data resulting from the bit rate processing to the dual-port frame memory through the first access port. A chip rate processor reads data from the dual-port frame memory through the second access port and performs chip rate processing on the data read from the dual-port frame memory. A data processor executes a software application that writes data to the dual-port frame memory through the first access port and reads data from the dual-port frame memory through the second access port.06-25-2009
20100284392VECTOR QUANTIZER, VECTOR INVERSE QUANTIZER, AND METHODS THEREFOR - Disclosed is a vector quantizer capable of improving the quantization accuracy of vector quantization to switch over the codebook of the vector quantization of a first stage depending on the type of feature having a correlation with a vector to be quantized. In the quantizer, a classifier (11-11-2010
20080219234METHOD AND APPARATUS FOR RECEIVING CODE TRANSMISSIONS OVER TIMESLOTS AND ANTENNAS - A plurality of antennas transmit a first spread spectrum signal having an associated code. The first spread spectrum signal is received at the wireless user. For each received first spread spectrum signal, a second spread spectrum signal is transmitted having an associated code having a same phase as that received first spread spectrum signal. The second spread spectrum signals are received at the plurality of antennas. A distance measurement is determined between each antenna and the wireless user based on in part a received timing of the second signals. The wireless user's location is determined based on in part the distance determinations.09-11-2008
20080219233METHOD AND APPARATUS FOR LOCATING A WIRELESS USER - A plurality of antennas transmit a first spread spectrum signal having an associated code. The first spread spectrum signal is received at the wireless user. For each received first spread spectrum signal, a second spread spectrum signal is transmitted having an associated code having a same phase as that received first spread spectrum signal. The second spread spectrum signals are received at the plurality of antennas. A distance measurement is determined between each antenna and the wireless user based on in part a received timing of the second signals. The wireless user's location is determined based on in part the distance determinations.09-11-2008
20110096767Systems and Methods for Parallel Signal Cancellation - A multi-mode receiver includes a channel decomposition module (e.g., a Rake receiver) for separating a received signal into multipath components, an interference selector for selecting interfering paths and subchannels, a synthesizer for synthesizing interference signals from selected sub channel symbol estimates, and an interference canceller for cancelling selected interference in the received signal. At least one of the channel decomposition module, the synthesizer, and the interference canceller are configurable for processing multi-mode signals.04-28-2011
20100195636RADIO COMMUNICATION SYSTEM, BASE STATION DEVICE, MOBILE STATION DEVICE, AND RANDOM ACCESS METHOD - A radio communication system includes a base station device and a plurality of mobile station devices which radio-communicate with the base station device. The base station device allocates random access signal identifiers for identifying random access signals to the mobile station devices and decides an allocation period for each of the random access signal identifiers used by the mobile base stations. During the allocation period, each of the mobile station devices transmits a random access signal corresponding to the allocated random access signal identifier. Thus, it is possible to suppress a delay until the random access procedure using a dedicated preamble is complete.08-05-2010
20100067513COMMUNICATION TERMINAL DEVICE, TFC SELECTION METHOD, AND PROGRAM - A communication terminal device is operable to multiplex a plurality of channel signals based on TFC (Transport Format Combination) selected by performing a TFC selection and transmit it. The communication terminal device includes a storage unit operable to store a plurality of combination of classifications to which the gain factors belong, as a combination of gain factors for weighting each of the plurality of channel signals, and to store a quantity of reduction of a maximum transmission power when the plurality of channel signals in association with each combination of the plurality of classifications are multiplexed and transmitted, and a TFC selection unit operable to select the TFC by reading out the quantity of reduction in association with the combination of the classification corresponding to the combination of the gain factors in each TFC from the storage unit when the TFC selection is performed.03-18-2010
20100067512Uplink transmit diversity schemes with 4 antenna ports - A system and method for uplink transmit diversity. The system and method include a pairing device configured to pair a number of symbol sets to form paired sets. The paired sets are mapped onto a number of layers. The layers are precoded into at least two pairs of two precoded streams and the precoded streams are mapped onto at least two antenna ports. Further, a number demodulation reference signals are transmitted via a portion of the resource elements for at least two antenna ports such that, a first number of demodulation reference signals are transmitted via a portion of the resource elements of a first pair of antenna ports and a second number of demodulation reference signals are transmitted via a portion of the resource elements of the second pair of antenna ports.03-18-2010
20120207144ACQUISITION METHOD WITH IMPROVED MULTI-FREQUENCY CORRELATION - The invention relates to a method for acquisition of a signal (08-16-2012
20100054226METHOD AND APPARATUS FOR CODE DIVISION SWITCHING - Time division multiplexed input signals (i.e., separated into time slots) are spread in each time slot with a destination code. This spreading is applied for destination identification as opposed to signal information modulation. Each spreading signal is associated with a particular destination for a particular time slot. These spread signals are then combined on a code division bus. Output signals for retransmission to the destinations are recovered from the bus by application of despreading codes. Each despread signal has a destination code which appears in its individual time slot. In a variant code division multiplexed signals are directed to a destination by use of time slot interchanger to achieve time division switching to route the CDMA multiplexed channels.03-04-2010
20090175256RADIO COMMUNICATION SYSTEM AND BASE STATION EMPLOYING CDMA - A base station controller selects codes corresponding to rate information included in a new starting call message from a mobile station, and further selects codes assignable to the mobile station from the selected codes as candidate codes. Then, the base station controller detects codes which meet both the characteristics of being at a higher level of the candidate codes in the tree structure and being assignable to other mobile stations, and further detects levels of the detected codes. Detected levels for all the candidate codes are compared to find a candidate code whose level is the lowest and to assign the candidate code to the mobile station sending the new staffing call message.07-09-2009
20100020781METHOD AND APPARATUS FOR DYNAMICALLY CHANGING A MAXIMUM ACCESS CHANNEL RATE - A method, device and computer-readable storage element for dynamically changing a maximum access channel rate at a site in a communication system. The method includes setting a maximum access channel rate for an access channel at a site, which comprises a coverage area for a base station. The method further includes determining a first access probe success rate that measures a rate at which first attempt access probes sent from the terminals on the access channel are received, and changing the maximum access channel rate based on the first access probe success rate.01-28-2010
20110216754TIME DELAY TRANSMIT DIVERSITY RADIOFREQUENCY DEVICE - A Time-Delay Transmit Diversity (TDTD) RF device is described for use to enhance the transmit performance of wireless communications systems. Time delayed signals are added to diversity antennas to increase coverage and capacity of wireless base stations. Performance is improved by reducing the effects of multipath fading while taking advantage of the additive effects of Rake receivers used in mobiles.09-08-2011
20080285534Different Orthogonal Code Sets with Members in Common - A first orthogonal codeset, obtainable in various manners, is used in a first cell to provide orthogonal spreading codes for traffic signals originating within the first cell. A second orthogonal code set for use in a second cell is obtained that has at least a first code in common with the first orthogonal code set by selecting any code in the first codeset to be the first common code. The plural orthogonal codesets can be utilized in various ways and in various environments. For example, the plural orthogonal codesets can be used for operation of a user equipment unit in a code division multiple access (CDMA) network.11-20-2008
20100165970APPARATUS AND METHOD FOR FAST SYNCHRONIZATION IN A DUAL MODE SYSTEM - A method and apparatus is provided for reducing network synchronization time in a dual-mode access terminal. The dual-mode access terminal supports a first and a second network. The method includes determining if CDMA system time is available within the dual-mode access terminal. In response to determining that CDMA system time is available, the method includes forgoing acquiring the CDMA system time through a pilot acquisition procedure, reading the CDMA system time from a memory, and programming the CDMA system time into a system time unit. In response to determining that CDMA system time is not available, the method includes acquiring the CDMA system time through the pilot acquisition procedure and programming the CDMA system time into the system time unit.07-01-2010
20120099580METHOD AND SYSTEM FOR REDUCTION OF PEAK-TO-AVERAGE POWER RATIO OF TRANSMISSION SIGNALS COMPRISING OVERLAPPING WAVEFORMS - The present invention provides a method and system for reducing the peak to average power ratio (PAP) of a signal with low computational complexity. According to one embodiment, the present invention is applied to reduce the PAP of an OFDM signal. According to an alternative embodiment, the present invention, is applied to reduce the PAP of a CDMA signal. Rather than seeking the optimum solution, which involves significant computational complexity, the present invention provides for a number of sub-optimal techniques for reducing the PAP of an OFDM signal but with much lower computational complexity.04-26-2012
20100061359RADIO COMMUNICATION BASE STATION DEVICE AND RADIO COMMUNICATION METHOD - Provided is a radio communication base station device capable of suppressing degradation of a signal error ratio characteristic for a mobile station in the vicinity of the cell center when a plurality of signals whose transmission power is to be controlled are frequency-multiplexed or code-multiplexed. In the device (03-11-2010
20110142025Apparatus for generating at least one signal based on at least one aspect of at least two received signals - An apparatus for generating at least one signal based on at least one aspect of at least two received signals is provided. The apparatus comprises: an antennae array of M antennae, where M is greater than or equal to two; at least one multiple-input and multiple-output capable transceiver in communication with each antenna in the antennae array of M antennae; and processing circuitry, the processing circuitry in communication with the multiple-input and multiple-output capable transceiver. In operation, the processing circuitry is capable of causing the apparatus to: receive at least two first signals, combine at least two of the at least two first signals, generate at least two second signals based on at least one aspect of the at least two first signals, and simultaneously transmit the at least two second signals; wherein the apparatus is configured such that at least one of the at least two second signals is capable of being received by a multiple-input capable node.06-16-2011
20080310383SYSTEMS AND METHODS FOR DESIGNING A SEQUENCE FOR CODE MODULATION OF DATA AND CHANNEL ESTIMATION - A method for using a numerical method to design a sequence for code modulating data is described. An input multiple input multiple output signal is determined. A nearest tight frame to one or more given structured vectors is obtained. One or more structured vectors is obtained from the nearest tight frame. The one or more structured vectors is projected onto the space of circulant matrices. One or more classes of matrices that indicates the design of the sequence is outputted. Data is code modulated using the designed sequence.12-18-2008
20080232339Adapting TXOP requests for multi-radio platforms - A first radio in a wireless network may request a transmit opportunity (TXOP) of a certain duration, with the duration being based a likelihood that a TXOP of that duration would cause interference with a co-located second radio. The duration may be dynamically adjusted based on the likelihood of such interference.09-25-2008
20080205366Baseband Chip and Method to Implement Multi-Mode Switching for Mobile Terminal Based on Baseband Chip - The present invention discloses a baseband chip and a method to implement multi-mode switching for a mobile terminal based on the baseband chip, the baseband chip of the mobile terminal in the present invention includes three subsystems of a source encoding/decoding subsystem 08-28-2008
20090161647TD-SCDMA UPLINK PROCESSING - A wireless system has an uplink chip rate processing architecture in which at least two groups of registers are provided, each group of register storing a set of time slot configuration parameters. A storage stores a sequence of time slot configuration set identifiers each identifying one of the groups of registers, each identifier corresponding to a time slot. A chip rate processing unit processes a stream of data over a plurality of time slots in which at each of the time slots, and the chip rate processing unit is configured according to the set of time slot configuration parameters stored in the group of register associated with the time slot configuration set identifier corresponding to the time slot.06-25-2009
20100002674Method for configuring gain factors for uplink service in radio telecommunication system - A method for configuring gain factors in a WCDMA telecommunication system is provided in which the gain factor for defining power required for normal reception of uplink data in an environment supporting an uplink service over an E-DCH can be configured using minimal signaling information. First gain factors for first TFs corresponding to a part of a TF set including a plurality of TFs available for an uplink service are received. One of the first TFs is determined as a reference TF for a second TF other than the first TFs in the TF set. Then, a second gain factor for the second TF is calculated using the first gain factor for the determined reference TF. The second gain factor is used for transmitting or receiving uplink data.01-07-2010
20120039328VARIABLE RATE CODING FOR ENABLING HIGH PERFORMANCE COMMUNICATION - A protocol for optimizing the use of coded transmissions such as over wireless links. In this technique, interframes are split into segments selected to be an optimum size according to transmission characteristics of the radio channel. The inverse process is applied at the receiver. Using this scheme, segments containing erroneous data may be resent.02-16-2012
20120039326Network System and Method For Providing an Ad-Hoc Access Environment - Network system and method for providing an ad-hoc access environment. A network system capable of providing an ad-hoc access environment comprises a controller unit connected to the network for receiving access requests from a device; and an authority unit for providing an authorization assertion to the controller unit; wherein the controller unit carries out an authorization process based on an access control policy including at least one rule based on which the controller unit contacts the authority unit and the authority unit provides an authorization assertion.02-16-2012
20120147877WIRELESS COMMUNICATIONS SYSTEM WITH SECONDARY SYNCHRONIZATION CODE BASED ON VALUES IN PRIMARY SYNCHRONIZATION CODE - A wireless communication system. The system comprises transmitter circuitry (BST06-14-2012
20120039327POWER CONTROL METHOD AND DEVICE - A power control method and device are used for achieving transmit power control of a User Equipment (UE) in a multi-carrier mode. The power control method includes: calculating a transmit power of a UE when the UE sends data through a plurality of carriers; and performing power compression on each carrier either step by step according to property parameters of each carrier or synchronously according to a compression ratio, when the transmit power of the UE exceeds a preset maximum transmit power. A power control device is further provided.02-16-2012
20110090893MOBILE COMMUNICATION SYSTEM, RECEIVER AND METHOD - A transmitter in a mobile communication system code-multiplexes transmission symbols together with spreading codes, performs inverse Fourier transform and transmits the result from multiple transmit antennas. A receiver in the mobile communication system performs Fourier transform on signals received at multiple receive antennas, extracts signal components of individual subcarriers and estimates symbols in accordance with a QR decomposition algorithm. A unitary matrix is derived such that a product of a spreading matrix including spreading elements as its elements and a channel matrix representing radio channel states is equal to a product of the unitary matrix and a triangular matrix. A reception vector, a unitary matrix and a triangular matrix are used to estimate symbol candidates transmitted from individual transmit antennas.04-21-2011
20110064068 method and system for configuring base station parameters - A system for configuring base station parameters comprises a base station, a mobile station and a code generating system. Additionally, a method for configuring base station parameters comprises steps of: after a code generating system generates an operation code, the operation code is sent to a base station via a mobile station, wherein the operation code includes information required for performing a configuration operation; the base station, if determining the operation code as received to be valid, then performs the corresponding configuration operation according to the information required for performing the configuration operation. According to the present invention, without depending on the base station controller and other network elements such as a network management system, the base station can implement message interaction over air link, i.e., parameter configuration may be implemented without requiring the base station to access to the network management system; by using a key and a check code, a parameter configuration process which is triggered inadvertently or maliciously is avoided.03-17-2011
20110064067COMMA FREE CODES FOR FAST CELL SEARCH USING TERTIARY SYNCHRONIZATION CHANNEL - A method of processing data comprises the receiving a frame of data having a predetermined number of time slots (03-17-2011
20110064066Methods for Estimation and Interference Cancellation for signal processing - A receiver in a CDMA system comprises a front end processor that generates a combined signal per source. A symbol estimator processes the combined signal to produce symbol estimates. An S-Matrix Generation module refines these symbol estimates based on the sub channel symbol estimates. An interference canceller is configured for cancelling interference from at least one of the plurality of received signals for producing at least one interference-cancelled signal.03-17-2011
20110158218Techniques utilizing step size adaptation for differential beamforming in wireless networks - An embodiment of the present invention provides a method used in transmit beam forming, comprising, providing differential feedback by using variable differential codebooks across a plurality of feedbacks wherein the differential codebooks may have different shapes, and/or spans, and/or the numbers of codewords across feedbacks.06-30-2011
20100067511METHOD AND ARRANGEMENT FOR PREAMBLE DETECTION - In a hardware accelerator for preamble detection of a Physical Random Access Channel (PRACH) in a CDMA based communication system, buffering means stores input samples received at an antenna at a first rate, addressing means read a predetermined consecutive number of the input samples in parallel at a second different rate. The hardware accelerator is further partitioned into a reusable unit providing code correlation, and a preamble detection dedicated unit providing signature code despreading. The reusable unit comprises means for correlating at least a subset of the previously read input samples with a predetermined code to provide a correlation output for a number of time lags. The preamble detection dedicated unit comprises means for preamble detection configured for providing Hadamard Transformation of the correlation output to enable preamble detection, and all means are arranged on a single hardware chip to enable high-speed data transmissions between the respective means.03-18-2010
20120044926COMMUNICATION SYSTEM, COMMUNICATION UNITS, AND METHOD FOR EMPLOYING A PILOT TRANSMISSION SCHEME - A method of pilot-assisted data communication comprises transmitting a composite signal. The composite signal comprises data, a first pilot sequence with non-cyclic properties; and a second pilot sequence, such that the composite signal within a designated or pre-defined time region of one or more time slots exhibits a cyclic prefixed time domain structure. Both the first pilot sequence and second pilot sequence are transmitted in substantially this same designated or pre-defined time region in one or more time slots.02-23-2012
20090285194Efficient Peak Cancellation Method for Reducing the Peak-To-Average Power Ratio in Wideband Communication Systems - An efficient peak cancellation method for reducing the peak-to-average power ratio in wideband communication systems uses repeated clipping and frequency domain filtering to achieve a desired peak-to-average power ratio for wideband code division multiple access and orthogonal frequency division multiplexing signals. The maximum magnitude of the filtered pulse is determined by a scaling factor which permits eliminating several iterations while still achieving convergence to the targeted peak-to-average power ratio, thereby reducing computational load and saving hardware resources. This results in improved performance in terms of error vector magnitude, adjacent channel leakage ratio and peak-to-average power ratio.11-19-2009
20110096765BRUTE FORCE CHANNEL DECODING - An embodiment of the present invention provides that pre-calculated code words corresponding to possible input bit sequences are stored in a UE, and then a similarity matching operation performed between a received coded bit sequence and the stored code words can be performed to identify that code word which most closely matches to the received sequence. Because the stored code words are associated with the original input bit sequences which produced those code words, by identifying the most closely correlating code word to a received coded sequence, then the input sequence which generated the matching code word can also be identified, and output as the decoder output. In this way, a more efficient decoding operation is obtained as decoding is no longer dependent upon a Viterbi decoding operation and moreover it is no longer necessary to implement a Viterbi decoder, instead merely requiring storage for the pre-calculated code words. In the specific case of the HS-SCCH Part 04-28-2011
20100260160Method for determining a paging slot by a base station for CDMA trunking service - The present invention discloses a method for determining a paging slot by a base station for CDMA trunking service, wherein the method includes: the base station determine a slot cycle index according to PTT version number of a mobile station, and determine a slot cycle used for the mobile station according to the slot cycle index. The present invention can solve the problem of slow access when the mobile station is called after power-on, which exists in the related art, thus can improve the speed of power-on access, and can determine the paging slot for a base station and a terminal which can not support a minus slot paging.10-14-2010
20120113973METHOD AND APPARATUS FOR PIC CHANNEL ESTIMATOR CONSIDERING WEIGHT - A method and an apparatus apply an adaptive weight in a wireless communication system. In the method, channel estimation is performed. A weighting factor that reduces a Mean Square Error (MSE) is determined with respect to a channel in a specific section. A channel estimate value is multiplied by the weighting factor.05-10-2012
20080304462SESSION INITIATION PROTOCOL/INTERNET PROTOCOL MULTIMEDIA SUBSYSTEM BASED ARCHITECTURE FOR SUPPORTING 3G1x VOICE/DATA - A core network architecture for supporting an internet protocol based network is disclosed. The system includes a base station which is configured to convert a signal from a first network to an internet protocol network signal and send the converted signal through the internet protocol base network. The network also includes a gateway which is configured to receive the converted signal and deploy the converted signal through the internet protocol base network. In this sense, the internet protocol base network manages the call mobility and delivery of the signal. The base station in this disclosure may be a femto base station and the first network may be a code division multi-access (CDMA) network.12-11-2008
20120027003Method and Apparatus for Power Efficient Idle Operation in a Dual SIM CDMA EVDO Mobile Station - Methods and apparatus for configuring and scheduling paging intervals for a mobile station (MS) having multiple subscriber identity modules (SIMs) to be aligned are provided. The MS having multiple SIMs may operate in a network via a particular radio access technology (RAT), such as Code Division Multiple Access (CDMA) EVDO (Evolution-Data Optimized). By having aligned paging intervals, the MS may wake up only once during the paging cycles for the various SIMs rather than waking up multiple times, thereby reducing power consumption of the MS during idle mode compared to a conventional MS with multiple SIMs.02-02-2012
20090135799WIRELESS COMMUNICATIONS DEVICE INCLUDING PATH SEARCHER WITH COMMON COHERENT CORRELATOR AND RELATED METHODS - A wireless communications device may include a path searcher for detecting signal peak locations in a received signal. The path searcher may include a common coherent correlator for performing a common coherent correlation operation on the received signal, and a plurality of peak detection frequency bin correlators may be arranged in parallel downstream from the common coherent correlator. The wireless communications device may further include a RAKE finger stage for determining symbol values from the received signal based upon the detected signal peak locations.05-28-2009
20090135800WIRELESS COMMUNICATIONS DEVICE INCLUDING RAKE FINGER STAGE PROVIDING FREQUENCY CORRECTION AND RELATED METHODS - A wireless communications device may include a path searcher for detecting signal peak locations in a received spread-spectrum signal, and a RAKE finger stage. The RAKE finger stage may include a plurality of RAKE fingers for determining symbol values from the received spread-spectrum signal based upon the detected peak locations. Each RAKE finger may include at least one de-spreader for de-spreading time-staggered versions of the received spread-spectrum signal and operating at a signal rate of the received spread-spectrum signal, and a frequency corrector downstream from the at least one de-spreader comprising a phase lock loop (PLL) operating at a rate that is less than the signal rate.05-28-2009
20110103364CODE DIVISION MULTIPLE ADDRESS CODING METHOD - The present invention provides a code division multiple address coding method which uses related random variables or some constants such as time, space and frequency as the coding element. The encoding procedure includes following steps: selecting the basic orthogonal perfect complementary dual code; selecting the basic time, space and frequency coding expansion matrix; constituting a perfect orthogonal complementary code pairs mate; expanding the length and the number of the code group in accordance with the law of spanning tree; completing the coding by transforming the spanning tree. The Code Division Multiple Access (CDMA) system or other wireless communication systems using the present address coding can achieve not only high spectral efficiency, high capacity, but also a strong anti-fading ability, namely, the systems can obtain high hidden diversity numbers, high transmission reliability and low receiver threshold SNR (signal to noise ratio), which meet the project implementation requirements of high reliability and high transmission speed with only a very small portion of transmitting power.05-05-2011
20120120940Apparatus and an Associated Method for Facilitating Communications in a Radio Communication System that Provides for Data Communications at Multiple Data Rates - Apparatus, and an associated method, for facilitating operation of a radio communication system that provides for multi rate data communications, such as a CDMA 2000 system that provides for 1xEV-DV communication services. A supplemental pilot, or control, signal generator embodied at a mobile station generates a supplemental pilot, or control, signal that is sent on a newly defined supplemental pilot, or control, channel. As the data rates of data communicated upon a reverse supplemental channel changes, corresponding changes are made to the power level of the reverse supplemental pilot, or control, signal.05-17-2012
20100246553WIRELESS TRANSMISSION DEVICE, WIRELESS COMMUNICATION SYSTEM AND WIRELESS TRANSMISSION METHOD - A wireless transmission device which communicates with a wireless reception device, includes: a reception quality setting unit which sets the reception quality of at least one code channel among a plurality of code channels to be multiplexed to be different from the reception quality of the other code channels; and a transmitting unit which transmits a signal which has the reception quality set by the reception quality setting unit and is generated by multiplexing the plurality of code channels, to the wireless reception device.09-30-2010
20120163364ANTENNA SYSTEM AND WIRELESS COMMUNICATION DEVICE EMPLOYING THE SAME - An antenna system in a wireless communication device includes a first antenna, a second antenna, a baseband microchip, a signal sensing unit, a logical circuit, and a switch unit. The first antenna receives and transmits wireless signals; the second antenna transmits wireless signals. The baseband microchip processes the wireless signals and provides a voltage logic signal. The logical circuit logically processes the voltage logic signal and the command signal to generate different switch signals, and the switch unit is controlled by the switch signals from the logical circuit to connect to the first antenna or to the second antenna to transmit the wireless signals.06-28-2012
20100208716METHOD FOR SELECTING CONSTELLATION ROTATION ANGLES FOR QUASI-ORTHOGONAL SPACE-TIME AND SPACE-FREQUENCY BLOCK CODING - In one embodiment, the present invention generates a single rotation angle that may be used to maximize diversity of a quasi-orthogonal space-time block code that encodes groups of four data symbols. Two rotation angles corresponding the first two data symbols in a group are set to zero, and two rotation angles corresponding to the second two data symbols in a group are set to a single initial value. A codeword distance matrix is determined for each possible combination of codewords and erroneously decoded codewords that may be generated using the initial rotation angle, and the minimum of the determinants of these matrices is selected. This process is repeated to generate a plurality of minimum determinants, and, for each iteration, a different single rotation angle corresponding to the second two data symbols is used. Then, a single rotation angle is selected that corresponds to the maximum of the minimum determinants.08-19-2010
20090059882Multi-carrier spread spectrum device using cyclic shift orthogonal keying, transmitter, receiver, and communication system thereof - A multi-carrier spread spectrum device using cyclic shift orthogonal keying includes: a modulation unit for receiving a first part of data bits and transforming the first part of data bits to a modulation symbol d03-05-2009
20090059884Transmission methods for downlink ACK/NACK channels - A method from transmitting data via multiple antennas. In this method, four information bits to be transmitted are multiplexed by using either one of a code division multiplexing scheme or a second code division multiplexing scheme combined with a real and imaginary multiplexing scheme, to generate a code division multiplexed symbol including four vectors. Then, the code division multiplexed symbol is repeatedly transmitted by alternatively applying two transmit diversity schemes via four transmission antennas.03-05-2009
20080212550METHOD AND APPARATUS FOR MANAGING CONTROL CHANNEL IN A MOBILE COMMUNICATION SYSTEM USING MULTIPLE ANTENNAS - A method for transmitting and receiving a control channel message in a mobile communication system using multiple antennas is provided. A base station determines whether a common pilot is used or a dedicated pilot is used. It also determines whether a corresponding Multiple Input Multiple Output (MIMO) mode is a Multi-CodeWord (MCW) MIMO mode or a Single CodeWord (SCW) MIMO mode, and determines whether knockdown precoding is used or ready-made precoding is used. The base station generates a control channel message field including a pilot pattern and a precoding type according to the determination results, and transmits the generated control channel message to the terminal. The terminal receives a control channel message transmitted from a base station. The terminal determines whether a common pilot is used or a dedicated pilot is used, whether a corresponding MIMO mode is an MCW MIMO mode or an SCW MIMO mode, and whether knockdown precoding is used or ready-made precoding is used. The terminal analyzes the control channel message field according to the determination results, and determines a data reception method according to the analysis result.09-04-2008
20120177025Multiple Granularity Location Determination - A mobile device can store a set of first CDMA identifiers including, for example, system identifiers, network identifiers, or zone identifiers. Each first CDMA identifier can be associated with a first geographic location. The mobile device can determine a current location by matching a current first CDMA identifier with a stored first CDMA identifier. If a user desires a current location that has finer granularity, the mobile device can retrieve a set of second CDMA identifiers including, for example, base station identifiers. Each second CDMA identifiers can be associated with a second geographic location that has a finer granularity than that of the first geographic location. The mobile device can match a current second CDMA identifier from the retrieved second CDMA identifiers and designate the second geographic location associated with the matching second CDMA identifier as the current location that has the finer granularity.07-12-2012
20120263162HIGH RATE CDMA WIRELESS COMMUNICATION SYSTEM USING VARIABLE SIZED CHANNEL CODES - Method and apparatus for high rate code-division multiple access wireless communication is described. Each of a channel encoded data is modulated by an associated code having a small number of pseudo-noise spreading chips per orthogonal waveform period, thus producing a set of streams of modulated symbols. Each of the set of streams of modulated symbols is then gain adjusted, and combined to yield two streams of combined symbols. The combination is the set of streams is carried out to reduce a peak-to-average ratio of the transmission. The resulting two combined symbol streams are modulated by a complex multiplyer using a user long code and a pseudorandom spreading code (PN code) and upconverted for transmission.10-18-2012
20120082151RECONFIGURABLE LOCAL OSCILLATOR FOR OPTIMAL NOISE PERFORMANCE IN A MULTI-STANDARD TRANSCEIVER - A transceiver for multi-standard operation (usable, for example, to communicate signals both of a first wireless communication standard and of a second wireless communication standard) has a mixer that receives a local oscillator signal generated by a local oscillator. A PLL of the local oscillator involves a VCO, a digitally programmable analog loop filter, a digitally programmable VCO supply voltage circuit, and a digitally programmable VCO varactor bias control circuit. In one aspect, the bandwidth of the analog loop filter is adjusted depending on the communication standard of the signal being communicated. In other aspects, the VCO supply voltage circuit and/or the varactor bias control circuit are configured in different ways to optimize PLL performance depending on the communication standard of the signal being communicated.04-05-2012
20120257614METHOD AND APPARATUS FOR DERIVING FINE TIMING TO ASSIST POSITION ACQUISITION IN A COMMUNICATION NETWORK - In wireless communication systems network timing may assist position location operations. A user equipment may obtain a rough network time from a server to tag when a downlink frame is received. That time may be based on a network frame boundary, particularly for synchronous networks. An estimate of the one way delay, which may be half of a timing advance value, may be added to arrive at a fine timing estimate. The fine timing estimate may assist with position location when there is a delay by a position location receiver in determining the user equipment's location.10-11-2012
20090016311METHODS AND APPARATUS FOR SUPPORTING GROUP COMMUNICATIONS WITH DATA RE-TRANSMISSION SUPPORT - Methods and apparatus related to group communications in a wireless communications system, e.g., a peer to peer wireless communications system, are described. Methods and apparatus directed to closed groups, e.g., where the number of group members are fixed at a given time and known to one or more members of the group, are described. Various embodiments are well suited to decentralized peer to peer wireless networks including a plurality of individual traffic resources, e.g., traffic slots and/or traffic segments, which may be independently scheduled in a decentralized manner. Some features and/or aspects are directed to the use of individual group member acknowledgement signaling in response to a transmitted group traffic data signal. By monitoring for anticipated individual group member acknowledgment signals and identifying members which have not signaled a positive acknowledgment, re-transmission can be directed and/or tailored to a subset of the group.01-15-2009
20090016310OPTIMIZED USAGE OF ACCESS TECHNOLOGY IN A MULTI-MODE ARCHITECTURE - Embodiments of the present invention are directed to optimized usage of access technology in a multi-mode architecture. By optimizing usage of access technology in a multi-mode architecture, the handset can utilize the most effective access technology for the application or it can utilize multiple access technologies for multiple applications.01-15-2009
20090016309APPARATUS AND METHOD FOR ULTRA WIDE BAND COMMUNICATION BASED ON MULTI-CODED BI-ORTHOGONAL PULSE POSITION MODULATION - Provided is a communication system for ultra wide band impulse communication, and more particularly, to a communication apparatus and method that can be used in a sensor network or a low-rate wireless personal area network. To be more specific, the present research suggests a transmitter employing multi-coded bi-orthogonal pulse position modulation/demodulation and a method thereof. The transmitter of the present research provides: a serial-to-parallel converter for convening L-bit serial data to be transmitted into parallel data by performing grouping on the L-bit serial data; a multi-coder for generating a multi-coded symbol by multiplying the parallel data by total L orthogonal codes of length N01-15-2009
20080298335Multi-Carrier Cdma Transmitting Device and Method Using Block-Based Multi-Carrier Spreading - A multi-carrier CDMA transfer device using block-based partial-carrier spreading uses block-based partial-carrier spreading in the multi-cell environment to be applied to MC-CDMA models (FH-MC/CDMA TDD) that are strong against multi-path fading. A transmitter of the transfer device spreads carriers per block in the frequency domain by using the block-based partial-carrier spreading, and a receiver despreads received signals by using the block-based partial-carrier and restore original data. Optionally, an array antenna having a plurality of antenna elements is applied to the transmitter and the receiver, and weights are adaptively applied depending on the channel quality when transmitting and receiving signals through the antenna elements. Therefore, frequency diversity is obtainable and inter-cell interference and inter-code interference is optimized in the MC-CDMA method. Also, changes of frequency hopping reduce temporal variations of channels and prevent a high SN ratio.12-04-2008
20120320900TRANSMITTING OR RECEIVING DATA VIA CODE DIVISION MULTIPLE ACCESS USING HIGHLY CORRELATED SPREADING CODES ASSIGNED TO A USER - Examples are disclosed for transmitting or receiving data via code division multiple access using highly correlated spreading codes assigned to a user.12-20-2012
20100215029MULTICASTING OR BROADCASTING VIA A PLURALITY OF FEMTOCELLS - Aspects of a method and system for servicing a plurality of users via a plurality of femtocells are provided. In this regard, a cellular enabled communication device may receive portions of a datastream from a plurality of femtocells, reconstruct the datastream from the received portions of the datastream, and process the reconstructed datastream for presentation to a user of the cellular enabled communication device. The received portions may be buffered in the cellular enabled communication device. The portions of the datastream may be associated with a plurality of CDMA channel access codes. The portions of the datastream may be received via a plurality of cellular frequencies. The portions of the datastream may be received during a plurality of TDMA timeslots. Portions of the datastream may be received from a cellular base station. Portions of the datastream may be received from a WiMAX base station.08-26-2010
20110261804Method for home agent location - A mobile node stores information identifying a number of possible mobility registration servers so that it can select a server based on its geographical location rather than simply using its default server. Selection will depend on the type of ID data stored. If partially completed FQDNs are stored, a country code is added to see if this corresponds to a local server. Alternatively IP addresses can be stored and chosen by prefix matching with a Care-of-Address.10-27-2011
20120087364REVERSE LINK PILOT INTEGRATED WITH BLOCK CODES - A technique for encoding digital communication signals. Data symbols are augmented in pilot symbols inserted at predetermined positions. The pilot augmented sequence is then fed to a deterministic error correction block encoder, such as a turbo product coder, to output a coded sequence. The symbols in the error correction encoded sequence are then rearranged to ensure that the output symbols derived from input pilot symbols are located at regular, predetermined positions. As a result, channel encoding schemes can more easily be used which benefits from power of two length block sizes.04-12-2012
20120087363Methods and Systems for Codeword to Layer Mapping - In a transmitter or transceiver, codewords from HARQ processes can be mapped or assigned to various layers for transmission and/or retransmission of information on a radio channel. Exemplary embodiments provide for various mappings which facilitate, for example, HARQ processes. For example, a codeword can be mapped onto a plurality of layers which are equal in number to a channel rank of a radio channel to be used for the transmission.04-12-2012
20100202432Method, Apparatus and System for Controlling Working Mode of HSDPA System - A method for controlling a working mode of a high speed downlink packet access (HSDPA) system includes steps as follows. When an activation state of a high speed shared control channel (HS-SCCH) less operation mode needs to be changed, a base station transmits a physical layer signaling for activating or deactivating the HS-SCCH less operation mode to a user equipment (UE), so as to instruct the UE to activate or deactivate the HS-SCCH less operation mode. The UE activates or deactivates the HS-SCCH less operation mode according to the physical layer signaling for activating or deactivating the HS-SCCH less operation mode from the base station.08-12-2010
20100202431Setting Maximum Power at a Mobile Communication System Base Station having Multiple Antennas - A MIMO-capable base station allocates a maximum transmission power budget to each of its antennas. For serving each of one or more MIMO and non-MIMO users, one or more carriers are allocated. For each carrier, information about an amount of allocated MIMO and non-MIMO user resources associated with the carrier is used to derive coefficients. Each coefficient corresponds to a unique one of the antennas, and represents a proportion of a maximum power budget for the carrier. For each carrier, the coefficients and the maximum transmission power budget for the carrier are used to derive a maximum transmission power budget for each of the antennas. For each antenna, a total maximum transmission power budget for the antenna is derived by combining the derived maximum transmission power budgets of the carriers transmitted on the antenna. The total maximum power budget of the antenna should not exceed a limit for the antenna.08-12-2010
20100202430METHODS AND SYSTEMS FOR IDLE MODE OPERATION IN MULTI-MODE MOBILE STATIONS - Certain embodiments of the present disclosure provide techniques for a multi-mode mobile station to establish paging intervals in different radio access technology (RAT) networks in an effort to avoid consecutive collisions between paging intervals of a first and a second network.08-12-2010
20100202429METHODS AND SYSTEMS FOR IDLE OPERATION IN MULTI-MODE MOBILE STATIONS - Certain embodiments of the present disclosure provide techniques for a multi-mode mobile station to establish paging intervals in different radio access technology (RAT) networks that do not collide.08-12-2010
20120140757MOBILE TELEVISION (TV), INTERNET, CELLULAR SYSTEMS AND WI-FI NETWORKS - Mobile device for receiving, demodulating and processing a Global Positioning System (GPS) signal and a photo camera generated processed signal into a combined GPS and camera signal and providing combined processed signal to a cross-correlator and filter for cross-correlation, filtering and Code Division Multiple Access (CDMA) and of Time Division Multiple Access (TDMA) quadrature modulation of combined signal. The CDMA and TDMA modulated signal is transmitted in a cellular system. The mobile device is connected to the wired or wireless internet network and to a cellular system and contains a receiver and a processor for receiving, demodulating and processing a first Orthogonal Frequency Division Multiplexed (OFDM) modulated video signal. The mobile device processes the first OFDM signal and provides it to a television (TV) set. The mobile device contains a touch screen signal generator and processor for processing the touch screen generated signal into a control signal for control of transmission of CDMA modulated signal and of OFDM modulated video signal. The mobile device contains a smoke detector and a motion detector and corresponding processors for processing motion and smoke detector generated signal.06-07-2012
20090268705DYNAMIC BANDWIDTH ALLOCATION TO TRANSMIT A WIRELESS PROTOCOL ACROSS A CODE DIVISION MULTIPLE ACCESS (CDMA) RADIO LINK - A technique for transmission of wireless signals across CDMA radio links. Bandwidth is allocated dynamically within a session to specific CDMA subscriber unit based upon data rate determinations. Specifically, a dynamic bandwidth allocation algorithm operates from limits calculated based upon available ports per subscriber, expected user bandwidth, and parallel user bandwidth versus throughput. Provisions for priority service, unbalanced forward and reverse spectrum utilization, voice prioritization, and band switching are also made.10-29-2009
20080225820MOBILE STATION CAPABLE OF AND A METHOD FOR GENERATING CHIP PATTERNS FOR TRANSMISSION - A mobile station for wirelessly transmitting to a base station by DS-CDMA a signal which is spread by multiplying a spreading code includes a high-precision transmission timing control unit configured to control transmitting timings of transmitting signals so that a time difference at the base station among timings of receiving from a plurality of mobile stations approaches zero.09-18-2008
20080225819SYSTEM AND METHOD FOR PROCESSING WIRELESS HIGH DEFINITION VIDEO DATA USING A SHORTENED LAST CODEWORD - A method and system for processing high definition video data to be transmitted over a wireless medium is disclosed. In one embodiment, the method includes receiving an information packet having the length of L bytes, wherein L=(M×n×K)+A, and where: M is the depth of an interleaver, n is the number of interleavers, K is an encoding code length and A is the number of remainder bytes with respect to M×n×K bytes, wherein the remainder bytes are located at the end of the information packet. M×n×K bytes represent M×n codewords, wherein the remainder bytes sequentially form a plurality of remainder codewords, and wherein the plurality of remainder codewords comprise a last codeword which is located at the end of the remainder codewords. The method further includes i) shortening the last codeword such that the resultant shortened codeword is shorter in length than each of the remaining codewords of the information packet and ii) adding dummy bits to the outer encoded data so as to meet a predefined size requirement for an outer interleaver.09-18-2008
20080225818SYSTEM AND METHOD FOR PROCESSING WIRELESS HIGH DEFINITION VIDEO DATA USING REMAINDER BYTES - A method and system for processing high definition video data using remainder bytes is disclosed. In one embodiment, the method includes receiving an information packet having the length of L bytes, wherein L=(M×n×K)+A, and where: M is the depth of an interleaver, n is the number of interleavers, K is an encoding code length and A is the number of remainder bytes with respect to M×n×K bytes, wherein the remainder bytes are located at the end of the information packet, and wherein M×n×K bytes represent M×n codewords. The method further includes converting the A remainder bytes into a plurality of shortened codewords, wherein each of the shortened codewords is shorter in length than each of the M×n codewords. At least one embodiment of the invention provides much lower padding efficiency while improving the decoding performance.09-18-2008
20080225817Receiving Apparatus, Transmitting Apparatus, Communication System and Communication Method - An acquiring unit (09-18-2008
20080225816Interface, Apparatus, and Method for Communication Between a Radio Equipment Control Node and a Remote Equipment Node in a Radio Base Station - An interface, apparatus, and method are described for communication between a radio equipment control (REC) node and a radio equipment (RE) node in a radio base station that tranceives information over radio interface using multiple antenna carriers. The REC node is separate from and coupled to the RE node by a transmission link. Both control information and user information are generated for transmission over the transmission link from one of the REC node and the RE node to the other. Many advantageous interface features are described.09-18-2008
20130142190Synchronization Channel Interference Cancellation - Disclosed are various embodiments for cancellation of a PSCH signal and/or SSCH signal from an RX input signal. A PSCH sequence and SSCH sequence are extracted a PSCH and SSCH signal. A relative gain associated with the PSCH signal and SSCH signal are determined relative to a CPICH signal. A reconstructed PSCH and SSCH signal are generated and cancelled from the RX input signal.06-06-2013
20130170485METHOD OF GENERATING CODE SEQUENCE AND METHOD OF TRANSMITTING SIGNAL USING THE SAME - A method of generating a code sequence and method of adding additional information using the same are disclosed, by which a code sequence usable for a channel for synchronization is generated and by which a synchronization channel is established using the generated sequence. The present invention, in which the additional information is added to a cell common sequence for time synchronization and frequency synchronization, includes the steps of generating the sequence repeated in time domain as many as a specific count, masking the sequence using a code corresponding to the additional information to be added, and transmitting a signal including the masked sequence to a receiving end.07-04-2013
20130170486Network searching method and device for CDMA single-mode chip multi-standby terminal - The present invention discloses a network searching method and device for a CDMA single-mode chip multi-standby terminal. The method comprises: a CDMA single-mode chip multi-standby terminal extracting Preferred Roaming Lists (PRLs) of multiple users who possess the terminal (S07-04-2013
20100278167METHOD AND SYSTEM FOR DATA-AIDED CHANNEL ESTIMATION - Systems and methods for data-aided channel estimation are provided. In one aspect of the disclosure, a channel estimation apparatus is provided. The apparatus comprises a first processing unit configured to process received chips into received symbols and a detection unit configured to detect user symbols from the received symbols. The apparatus further comprises a second processing unit configured to process the detected user symbols into estimated transmit chips and a channel computation unit configured to estimate a channel based on the estimated transmit chips and the received chips.11-04-2010
20130177008Method for Configuring Gain Factors for Uplink Service in Radio Telecommunication System - A method for configuring gain factors in a WCDMA telecommunication system is provided in which the gain factor for defining power required for normal reception of uplink data in an environment supporting an uplink service over an E-DCH can be configured using minimal signaling information. First gain factors for first TFs corresponding to a part of a TF set including a plurality of TFs available for an uplink service are received. One of the first TFs is determined as a reference TF for a second TF other than the first TFs in the TF set. Then, a second gain factor for the second TF is calculated using the first gain factor for the determined reference TF. The second gain factor is used for transmitting or receiving uplink data.07-11-2013
20080198831METHOD, SYSTEM AND DEVICE FOR DISTRIBUTING RESOURCE OF BASE STATION NODE - A method, system and device for distributing resources of a base station node (Node B) are disclosed to enable F-DPCH resources of a local cell to be sufficiently used. In this invention, Node B reports to the RNC the F-DPCH capability of the local cell so as to provide a decision-making basis about using or not using the F-DPCH to the RNC. If the local cell supports F-DPCH, when the UE initiates an RRC connection establishment request, the RNC instructs the Node B to distribute the F-DPCH and HSDPA resources to the UE, otherwise the RNC instructs the Node B to distribute DPDCH and DPDCCH resources to the UE. The F-DPCH capability of the local cell can be reported in a newly added IE or extended existing IE of the Audit Response message and Resource Status Indication message.08-21-2008
20080198830SYSTEMS AND METHODS FOR ARRANGING MAC LAYER PDUS IN A DOWNLINK BURST - Embodiments of systems and methods for arranging data units in a downlink burst transmission are generally described herein. Other embodiments may be described and claimed. In some embodiments a group of data units are arranged by associated identifiers. These identifiers may also be associated with certain subscriber stations. Once arranged, the data units may be transmitted in a downlink burst and received by a subscriber station. The subscriber station may determine the arrangement of the data units to decode until a cutoff value is determined and passed.08-21-2008
20080198829Mechanism for Automatic Network Formation and Medium Access Coordination - The invention provides a set of mechanisms by which a wireless mobile mesh node equipped with a directional antenna may self form and self adapt its steady-state communications schedule. A link establishment handshake is carried out over an ongoing subtemplate-based discovery scan. During time not reserved for steady-state communications with previously discovered neighbors, nodes continue to search for an establish links with new neighbors. Initial and subsequent bandwidth allocation protocols may be utilized to allow peer nodes to coordinate communication opportunities between the peer nodes without impacting or having knowledge about reservations for communications with other peers. The link establishment and initial bandwidth allocation protocols may be piggy-backed for readily establishing an initial steady-state schedule with a peer upon link establishment without impact on previous steady state reservations by other nodes or on ongoing link establishment attempts elsewhere.08-21-2008
20080198828Multiuser detector for variable spreading factors - A multiuser detector method and receiver that detects and decodes synchronous or asynchronous CDMA subchannels having different spreading factors with reduced computational complexity. The multiuser receiver is compatible with ZF-BLE, MMSE, decorrelating detectors and the like using Cholesky decomposition to minimize numeric operations. The receiver and method arranges the columns of system transmission response matrices representing the response characteristics of individual users into a total system transmission response matrix which represents a plurality of matched-filter responses for a given block of received data. The invention when used in conjunction with Cholesky decomposition reduces the number of required mathematic operations prior to parallel matched filtering.08-21-2008
20090161645METHOD OF REALIZING SMART ANTENNA BASED ON SOFTWARE RADIO AND SYSTEM THEREFOR - A method of realizing smart antenna based on software radio and system therefore in IMT-2000 CDMA system. Channel conditions are classified according to the features of wireless communication channel conditions, covariance matrix of array receiving signals is step-by-step dimension-reduced and decorrelated using special smoothing differential processing method, obtaining the structure related to the receiving signals by gradually converting correlated signal into independent signal sources and realizing conditions recognition, and respectively calculating receiving weights and transmitting weights using corresponding receiving adaptive beam forming algorithm and transmitting adaptive beam forming algorithm selected according to the result of channel condition classifying. By using adaptive beam forming method of smart antenna based on software radio, the present invention has the following advantages comparing with existing adaptive beam forming method: good adaptability, avoidance of the limitation of single adaptive beam forming method, easiness of upgrading and maintaining based station system, and effective suppression of disturbing effect.06-25-2009
20120275448Methods and Apparatus to Resolve Paging Monitoring Conflicts in TD-SCDMA Multimode Terminal With MIMO - Certain aspects of the present disclosure propose techniques for resolving paging interval conflicts between two different radio access technology (RAT) paging intervals and for avoiding missing paging messages for a multimode terminal (MMT). Certain aspects provide a method for detecting messages associated with paging, by an MMT supporting multiple-input multiple-output (MIMO), from first and second networks using first and second RATs, such as Time Division Synchronous Code Division Multiple Access (TD-SCDMA) and Code Division Multiple Access (CDMA) 1xRTT (Radio Transmission Technology), Evolution-Data Optimized (EVDO), or Wideband CDMA (WCDMA). The method generally includes using a first MIMO receive chain of the MMT to detect a first message associated with paging from the first network and simultaneously using a second MIMO receive chain of the MMT, different from the first receive chain, to detect a second message associated with paging from the second network.11-01-2012
20100309900SEARCHER FOR MULTIPLE ORTHOGONAL CHANNELS WITH KNOWN DATA- WCDMA STEP2 SEARCH - A circuit and algorithm are disclosed for a step2 search of a three step search of synchronization channels in a W-CDMA system. A mobile terminal of the CDMA system includes an RF downconverter for receiving I and Q signals. A searcher, responsive to the I and Q signals, includes a first correlator for correlating the I and Q signals with a primary synchronization code on a primary synchronization channel, and a second correlator for correlating I and Q signals with a secondary synchronization code on a secondary synchronization channel. The correlated I and Q signals are added for each of the secondary synchronization codes. An energy calculator and a maximum energy detector use the correlated I and Q signals of both the primary and secondary synchronization channels to detect the most likely scrambling code group of secondary synchronization codes.12-09-2010
20100316039APPARATUS AND METHOD FOR GENERATING RANGING CODE - An apparatus for generating a ranging code extracts a ranging code in each ranging mode, using a ranging code table storing one period data in bytes of the PN code according to a reference UL PermBase number, and an offset table that stores byte offsets for the start positions of the PN codes of the reference UL PermBase number and the other plurality of UL PermBase numbers and bit offsets in the byte including the start positions, on the basis of the PN code according to the reference UL PermBase number.12-16-2010
20100316038CODE SYNCHRONIZATION CIRCUIT, DELAY TIME MEASUREMENT DEVICE, CONTROL METHOD, CONTROL PROGRAM, AND COMPUTER-READABLE STORAGE MEDIUM - A code synchronization circuit for a delay time measurement device used in a low C/N environment is provided. The code synchronization circuit is capable of high precision timing phase measurement and stable operation against variations in the reception level. For these purposes, the code synchronization circuit includes: a numeric control frequency variable oscillation section (12-16-2010
20130182698PN Selection for RF Repeaters, Bi-Directional Amplifiers or Distributed Antenna Systems - Presented herein are methods and systems for providing network access at a slave node based on a signal transmitted by a master BTS. In one example, a pseudorandom code (PN code) selection is described, in which each slave node has a known associated time offset and data is transmitted with a PN code advanced by the known time offset and the propagation delay. Using an example slave base station transceiver architecture (or just slave node for short), the “traditional” BSC can be removed from at least one base station (e.g., “slave nodes”) and a master base station may be configured to control the signal being transmitted from each slave node. Each slave node then may transmit and receive RF signals. The master BTS head end may receive signal portions from the slave nodes and mobile devices, and combine them for relay back into the network.07-18-2013
20110286440METHOD FOR TRANSMITTING REFERENCE SIGNAL FOR TERMINAL DEMODULATION IN RADIO MOBILE COMMUNICATION SYSTEM, AND APPARATUS FOR IMPLEMENTING THE SAME - The present invention relates to a method for transmitting a data demodulation reference signal in a radio mobile communication system. The method comprises: a step for generating a sub-frame including the data demodulation reference signal, and a step for transmitting the generated sub-frame. The 1st and 2nd demodulation reference signal pattern groups include plural demodulation signal patterns orthogonal to each other, and are differentiated from each other with regard to time-frequency resources. In the data demodulation reference signal, demodulation reference signal patterns which are respectively orthogonal to each other M (M≦N) and N−M times are respectively included in the 1st and 2nd demodulation reference signal pattern groups if the rank is N.11-24-2011
20130195097METHOD AND APPARATUS FOR ENABLING ENHANCED CQI UPDATE FREQUENCY - A method and apparatus for facilitating downlink data transmission in a TD-SCDMA system is provided. The method may comprise receiving, from a Node B, a channel quality indicator (CQI) request, wherein the CQI request is not associated with a payload transmission.08-01-2013
20120069833CHANNEL STATE INFORMATION REPORTING FOR A SUCCESSIVELY DECODED, PRECODED MULTI-ANTENNA TRANSMISSION - Teachings herein provide reduced complexity channel state information (CSI) reporting for a successively decoded, precoded multi-antenna transmission. A wireless communication device reports CSI by forming, for each candidate transmission rank of the transmission, a sequence of codewords by iteratively adding codewords allowed for that rank to the sequence. At any given point in the sequence, the device adds the codeword expected to yield the highest individual information rate if decoded at that point in the sequence, considering the different rates possible under different precodings of the transmission. The device then computes, for each rank, a sum information rate across the codewords in the sequence formed for that rank, selects the rank having the highest sum information rate, and reports the selected rank along with the sequence formed for that rank. CSI reporting complexity is reduced because the device constrains its evaluation to only some of the possible decoding sequences.03-22-2012
20120300765CELLULAR COMMUNICATIONS SYSTEM - A method, receiver and program for processing a signal received using a wireless communication channel by a receiver in a wireless cellular network. The method comprises: receiving signal samples of a signal to be processed from a serving cell; identifying a set of dominant interfering cells generating an interfering signal above a level; using the number of cells in the set to select an interference scenario; and using the selected interference scenario and at least one parameter related to the serving cell and the interfering cells to select a processing function for processing the signal.11-29-2012

Patent applications in class Combining or distributing information via code word channels using multiple access techniques (e.g., CDMA)