Combining Or Distributing Information Via Code Word Channels Using Multiple Access Techniques (e.g., Cdma) Patents (Class 370/441)
  • Patent number: 8265054
    Abstract: A wireless communication apparatus of a base station uses antennas for multiple systems, forms a multi-beam, transmits data to a mobile station, and includes a code book configured to store therein beamforming information; a pre-coder that reads the code book and executes a process of forming a given beam for the data; a control unit that, based on feedback information to correct variations in phase occurring at transmitting circuits respectively corresponding to each of the systems, performs control such that the beamforming information to correct the variations in phase is read from the code book; and a phase correcting unit that corrects a phase of the multi-beam formed by the pre-coder, based on the feedback information and such that relations among the phases of the multi-beam become substantially linear.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: September 11, 2012
    Assignee: Fujitsu Limited
    Inventor: Masafumi Tsutsui
  • Patent number: 8265118
    Abstract: Described herein are code-modulated multi-signal systems. In one embodiment, a multi-signal system receives multiple input signals and code-modulates each input signal with a unique code to distinguish the input signal from the other input signals. The input signals may come from multiple antennas, multiple sensors, multiple channels, etc. The code-modulated signals are then combined into a combined signal that is sent through shared blocks and/or transmitted across a shared medium in a shared path. After shared processing and/or shared transmission, the individual signals are recovered using matched filters. Each matched filter contains a code corresponding to one of the unique codes for recovering the corresponding signal from the combined signal. The recovered signals may then be inputted to additional processors for further processing.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: September 11, 2012
    Assignee: The Regents of the University of California
    Inventors: Fred Tzeng, Amin Jahanian, Payam Heydari
  • Patent number: 8259744
    Abstract: An apparatus for use with a shared access communication channel is disclosed. The chipping rate of a first group of terminals is determined. Transmissions on the shared access communication channel are encoded using first pseudorandom noise (PN) code and a phase shift at the first chipping rate and an orthogonal spreading code having a chipping rate less than the first chipping rate. The apparatus may receive a feedback channel assignment and may receive an indication of a change in timing on the assigned feedback channel.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: September 4, 2012
    Assignee: IPR Licensing, Inc.
    Inventors: James A. Proctor, Pertti O. Alapuranen
  • Patent number: 8260288
    Abstract: A base station receives a first identifier (e.g., pseudo ESN) from the wireless device and assigns an index to the wireless device. The base station generates a second identifier (e.g., a dynamic ESN) for the wireless device based on the first identifier and the index. The second identifier is unique among all wireless devices communicating with the base station and may also be unique among other wireless devices communicating with other base stations. The base station generates a code (e.g., a PLCM) for the wireless device based on the second identifier. The wireless device generates the second identifier and the code in similar manner. The second identifier and code may be used for communication between the base station and the wireless device.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: September 4, 2012
    Inventor: Henti Tung
  • Patent number: 8260259
    Abstract: Methods and devices for instructing a subscriber identity module in a cellular communications network to process non-standard authentication information in a standard manner are disclosed. One embodiment of a method comprises receiving a first message authentication code (MAC) and an authentication management field (AMF) at a subscriber identity module as part of an authentication protocol, calculating a second MAC and determining whether the second MAC is equivalent to the first MAC. If the first and second MAC are not equivalent, the SIM calculates a third MAC and determines whether the first MAC is equivalent to the third MAC, and if so, the subscriber identity module processes the AMF in a predefined or standard manner.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: September 4, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: James Semple, Gregory G. Rose, Michael Paddon, Philip Michael Hawkes
  • Patent number: 8254246
    Abstract: A method and apparatus are provided for reducing the number of pilot symbols within a MIMO-OFDM communication system, and for improving channel estimation within such a system. For each transmitting antenna in an OFDM transmitter, pilot symbols are encoded so as to be unique to the transmitting antenna. The encoded pilot symbols are then inserted into an OFDM frame to form a diamond lattice, the diamond lattices for the different transmitting antennae using the same frequencies but being offset from each other by a single symbol in the time domain. At the OFDM receiver, a channel response is estimated for a symbol central to each diamond of the diamond lattice using a two-dimensional interpolation. The estimated channel responses are smoothed in the frequency domain. The channel responses of remaining symbols are then estimated by interpolation in the frequency domain.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: August 28, 2012
    Assignee: Research in Motion Limited
    Inventors: Jianglei Ma, Ming Jia, Peiying Zhu, Wen Tong
  • Patent number: 8249498
    Abstract: A method to selectively restrict certain wireless communication devices (WCDs) from attempting to access a radio access network is disclosed. In example operation, a wireless carrier will provision a proper subset of its subscriber WCDs with a special access-toggle flag or associated logic, while other subscriber WCDs of the wireless carrier will not be so provisioned. When and where the wireless carrier wishes to prevent the subset of WCDs from attempting to access the wireless carrier's system, the wireless carrier will then broadcast an access-off command that will be interpreted by the devices with the access-toggle flag/logic as meaning that they should not seek to access the wireless carrier's system, but that will be disregarded (or at least not so interpreted) by the subscriber WCDs without the access-toggle flag/logic.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: August 21, 2012
    Assignee: Sprint Spectrum L.P.
    Inventor: Srikanth Pulugurta
  • Patent number: 8248988
    Abstract: 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.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: August 21, 2012
    Assignee: InterDigital Technology Corporation
    Inventors: D. Ridgely Bolgiano, Gilbert E. LaVean
  • Patent number: 8249629
    Abstract: Methods and systems for sending, receiving, storing, and reading CDMA type SMS messages on wireless non-CDMA or multimode mobile devices include embedding a CDMA SMS message in a non-CDMA SMS host message. Such a host message may be created, transmitted, received, or otherwise processed by a mobile device, such as one operating in a GSM or UMTS mode. Similarly a CDMA SMS message may be stored in a SIM/USIM module using similar techniques. An embodiment provides a software application programming interface (API) which transparently processes SMS messages regardless of whether they are CDMA or non-CDMA and regardless of the operating mode of the mobile device.
    Type: Grant
    Filed: December 24, 2007
    Date of Patent: August 21, 2012
    Assignee: QUALCOMM Incorporated
    Inventor: Hai Qu
  • Patent number: 8243749
    Abstract: A wireless communication device, and a wireless communication system and a method of beamforming is presented. The wireless communication system and/or device includes a beamformee unit, a beamformer unit and two or more antennas to transmit the data unit and the protocol data unit according to the beamformee and the beamformer units, respectively. The beamformee conveys feedback information by a data unit in one of the feedback positions that include an immediate feedback position, an aggregated feedback position and a delayed feedback position. The beamformer unit generates a protocol data unit including a control field that includes one of the feedback request information types which is selected from a Channel State Information or uncompressed Steering Matrix or compressed Steering Matrix to request feedback from a remote communication device.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: August 14, 2012
    Assignee: Intel Corporation
    Inventors: Gal Basson, Solomon B. Trainin
  • Patent number: 8244265
    Abstract: A technique for reducing a time delay between an application output at a subscriber station and uplink resource allocation for the subscriber station includes scheduling, between periodic uplink resource allocations, one or more probe uplink resource allocations for the subscriber station. Next, respective information in at least one of the one or more probe uplink resource allocations is received at an access point. Finally, subsequent periodic uplink resource allocations are scheduled based on at least one of the one or more probe uplink resource allocations.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: August 14, 2012
    Assignee: Motorola Mobility LLC
    Inventors: Ivan N. Vukovic, Rangsan Leelahakriengkrai
  • Patent number: 8233868
    Abstract: A radio receiver device includes a radio signal processing section and a digital processing section. The radio signal processing section converts a received radio signal into a digital signal, demodulates the digital signal and detects a S/N ratio of the radio signal. The digital processing section digitally processes digital signals and switches over its operation mode based on the detected S/N ratio, thereby controlling a digital noise generated in the digital processing. The radio processing section checks whether the S/N ratio is lowered by a digital noise of the digital processing section or a shielding body external to the radio receiver device. The digital processing section switches over its operation mode to reduce the digital noise only when the cause of the fall of the S/N ratio is caused by the digital noise.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: July 31, 2012
    Assignee: DENSO CORPORATION
    Inventors: Kenichi Takagi, Katsuhiko Mutoh
  • Patent number: 8228785
    Abstract: Methods and apparatus for a next-in-line protecting device to periodically broadcasting its existence in a communication system. A next-in-line protecting device periodically transmits the next-in-line codeword to inform a primary protecting device and a plurality of secondary devices that the next-in-line device still exists in a communication system. The NPD transmits the NPD codeword intelligently in order to reduce the probability of collision with the RTS codewords transmitted by the other SPDs.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: July 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Baowei Ji
  • Patent number: 8228936
    Abstract: A reference signal multiplexing method for multiple mobile stations includes: grouping together control signals for the multiple mobile stations; and multiplexing reference signals corresponding to the control signals by CDM over the same bandwidth as that of grouped control signals.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: July 24, 2012
    Assignee: NEC Corporation
    Inventors: Takamichi Inoue, Yoshikazu Kakura
  • Patent number: 8223820
    Abstract: A technique for receiving a data stream including a spreading sequence packet of information containing a data payload and, in addition to the data payload, packet overhead including at least periodic information and at least one unique section of known coded information that defines a unique position within the packet, includes performing a plurality of processing steps to detect the position of the unique section within the packet of information. The steps include detecting the periodicity of the periodic information in a first processing step; in a second processing step after periodicity in the received data stream has been determined, estimating the position of the unique section within the packet of information; and in a third processing step, correlating the information in the packet of information about the estimated position with the known coded information.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: July 17, 2012
    Assignee: Silicon Laboratories Inc.
    Inventor: Alexandre Rouxel
  • Patent number: 8223734
    Abstract: A method is provided for transmitting a downlink shared control channel including a control signal necessary for restoring a transmission data signal in a mobile communication system that transmits a data signal using multiple antennas. It is determined whether the transmission data signal is coded with two or more codewords before being transmitted. One of a first element index of a sub-codebook configured only with a one codeword-dedicated precoding in a precoding codebook and a second element index of a sub-codebook configured only with a more-than-two codeword-dedicated precoding is selected, according to the determination result. A control channel is generated by including the selected element index in the precoding information. The generated control channel is mapped to a particular resource block and the mapped control channel is transmitted to a particular reception apparatus.
    Type: Grant
    Filed: February 14, 2008
    Date of Patent: July 17, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-Kyu Han, Yong-Jun Kwak, Hwan-Joon Kwon, Ju-Ho Lee
  • Patent number: 8223735
    Abstract: 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.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: July 17, 2012
    Assignee: Cisco Technology, Inc.
    Inventors: Genyuan Wang, Hang Jin
  • Patent number: 8219124
    Abstract: A method for planning cellular mobile telecommunications network including at least one network cell and intended to provide network services to user equipment located in the network cell, wherein the network services include at least one network service deliverable at a plurality of provisioning rates, including evaluating an uplink coverage of the network in a predetermined service area. The evaluation of the uplink coverage includes: a) forecasting a number of user equipment located in the service area; b) setting a current provisioning rate to the highest of provisioning rates; c) estimating a power required for each user equipment for accessing the at least one network service in the service area at the current provisioning rate; and d) comparing the estimated required power to a maximum power deliverable by each user equipment.
    Type: Grant
    Filed: November 21, 2005
    Date of Patent: July 10, 2012
    Assignee: Telecom Italia S.p.A.
    Inventors: Massimiliano Panico, Indro Francalanci
  • Patent number: 8218508
    Abstract: 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.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: July 10, 2012
    Assignee: InterDigital Technology Corporation
    Inventors: Stephen G. Dick, Charles A. Dennean, Eldad M. Zeira, Kyle Jung-Lin Pan, Sung-Hyuk Shin, Ariela Zeira
  • Patent number: 8213390
    Abstract: Upon successful decoding of a first set of slots of a first data packet, an Access Network (AN) can send an acknowledge message (ACK) to an Access Terminal (AT) to indicate that the AN has successfully decoded the data received in the first set of slots of the first data packet. Upon unsuccessful decoding of the first set of slots of the first data packet, the AN can send a negative acknowledge message (NAK) to the AT to indicate that the AN has not successfully decoded the data received in the first set of slots of a first data packet. Based upon receipt of the NAK, the AT can resend the data by sending a second set of slots of the first data packet containing redundant data. Based upon receipt of the ACK, the AT can send a first set of slots of another packet.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: July 3, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Peter J. Black, Jun Ma, Eduardo Esteves, Christopher Gerard Lott
  • Patent number: 8208458
    Abstract: A system and method is provided for employing six-bit rank 1 and 2 codebooks for multiple transmit antennas. A channel estimate is generated for a communications channel that can be established between a communications device and a controller serving the communications device. The channel estimate can be quantized using a codebook to produce a selected codeword. An index corresponding to the selected codeword can be transmitted to the controller. The codebook can include a plurality of first level codewords, with each first level codeword having a plurality of subsidiary codewords. The quantizing can be in the form of a search of the first level codewords followed by a search of a subset of a plurality of subsidiary codewords, and the codebook can be derived at least in part from a rank of communications between the communications device and the controller.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: June 26, 2012
    Assignee: Futurewei Technologies, Inc.
    Inventors: Yang Tang, Yajun Kou, Young Hoon Kwon, Zhigang Rong
  • Patent number: 8204007
    Abstract: A method and apparatus for controlling enhanced dedicated channel (E-DCH) transmissions are disclosed. An enhanced uplink medium access control (MAC-e/es) entity processes a received scheduling grant to calculate a serving grant. The MAC-e/es entity determines whether both a hybrid automatic repeat request (H-ARQ) process for scheduled data and scheduled data are available. If an H-ARQ process for scheduled data and scheduled data are available, the MAC-e/es entity determines whether a serving grant exists. The MAC-e/es entity calculates a remaining power based on maximum allowed power and restricts an E-DCH transport format combination (E-TFC) based on the remaining power. The MAC-e/es entity selects an E-TFC using the serving grant and generates a MAC-e protocol data unit. The MAC-e/es entity may process the received scheduled grant is at each transmission time interval or may store the received scheduled grant in a grant list until there is E-DCH data to transmit.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: June 19, 2012
    Assignee: InterDigital Technology Corporation
    Inventors: Stephen E. Terry, Guodong Zhang, Jung-Lin Pan, Peter S. Wang
  • Patent number: 8194618
    Abstract: In addition to dedicated channel signal formation units 101-1 to 101-N, control information channel signal formation unit 110 is provided and this control information channel signal formation unit 110 forms control information for carrying out uplink packet transmission. The control information channel signal formation unit 110 multiplexes control information (RG information, ACK/NACK, etc.) directed to a plurality of communication terminals through a channel encoding section 111 according to a multiplexing rule preset between the base station apparatus and each communication terminal and spreads the control information using a spreading code common to the communication terminals through a spreading section 113 and thereby forms a control information channel signal for uplink packet transmission.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: June 5, 2012
    Assignee: Panasonic Corporation
    Inventors: Hitoshi Iochi, Hidetoshi Suzuki
  • Patent number: 8189540
    Abstract: 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.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: May 29, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Roberto Padovani, Paul E Bender, Peter J. Black, Matthew S. Grob, Jurg K. Hinderling, Nagabhushana T. Sindhushayana, Charles E. Wheatley, III
  • Patent number: 8190161
    Abstract: A system and method for utilizing multiple communication pathways for communication hand-off (e.g., in a MIMO system). Various aspects of the present invention may comprise an access point communicating with a communication system utilizing a first number of transceivers. After determining to perform a hand-off of the communication system to a second access point, simultaneously, a second number of communication system transceivers may be utilized to communicate with the first access point and a third number of communication system transceivers may be utilized to communicate with the second access point. Various aspects of the present invention may also comprise an access point initially communicating with a communication system utilizing a first number of transceivers. After determining to hand-off the communication system, the access point may communicate with the communication system utilizing a second number of transceivers that is different from the first number of transceivers.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: May 29, 2012
    Assignee: Broadcom Corporation
    Inventors: Jeyhan Karaoguz, Nambirajan Seshadri, James D. Bennett
  • Patent number: 8184607
    Abstract: Rather than attaching a preamble to a data traffic subpacket, a preamble channel is transmitted along with a traffic channel. In a system wherein the data traffic subpackets are variably sized, preambles can also be variably sized if a target station can decode variably sized preambles. A method and apparatus for decoding variably sized preamble subpackets are presented herein.
    Type: Grant
    Filed: June 1, 2007
    Date of Patent: May 22, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Joseph P. Odenwalder, Sandip Sarkar, Yongbin Wei
  • Patent number: 8179865
    Abstract: A method and apparatus for reducing other cell interference in a wireless communication system are provided, in which a symbol generator for generating at least one modulation symbols to be transmitted, a resource mapper for mapping and assigning the modulation symbols into a resource block common to a Base Station (BS) and at least one neighboring Base Station (BS), and a spreader for spreading the mapped modulation symbol with an BS-specific code allocated to the BS, the BS-specific codes of the BS being one of orthogonal and quasi-orthogonal to an BS-specific code allocated to the neighbor BS.
    Type: Grant
    Filed: February 5, 2007
    Date of Patent: May 15, 2012
    Assignee: Qualcomm Incorporated
    Inventors: Seong-Wook Song, Hun-Kee Kim, Sung-Soo Kim
  • Patent number: 8180000
    Abstract: A GNSS receiver including a processing unit adapted to process radio signals transmitted from an active set of signal sources and based thereon produce position/time related data. The signals of the active set are processed in parallel with respect to a real-time signal data rate of the signals by a respective tracking channel resource allocated for each signal source. The processing unit also has a monitoring channel resource adapted to process radio signals transmitted from each of at least two signal sources in an additional set of signal sources different from the signal sources in the active set. The processing unit is adapted to process the radio signals of the additional set according to a cyclic processing sequence such that the signals from any of the signal sources in the additional set can be included into a navigation solution without delay.
    Type: Grant
    Filed: June 12, 2007
    Date of Patent: May 15, 2012
    Assignee: NordNav Technologies AB
    Inventors: Per-Ludvig Normark, Alexander Mitelman
  • Patent number: 8170126
    Abstract: A method for transmitting a plurality of sequences across a plurality of bands of a wireless spectrum is described in which a first sequence is produced using a set of reference signal sequences, wherein the set of reference signal sequences comprises at least CAZAC sequences and near-CAZAC sequences. A second sequence is also produced. The first sequence is transmitted in a first band of the wireless spectrum, and the second sequence is transmitted in a second band of the wireless spectrum. The first and the second sequences are transmitted concurrently by a same user equipment.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: May 1, 2012
    Assignee: Texas Instruments Incorporated
    Inventors: Tarik Muharemovic, Zukang Shen
  • Patent number: 8169979
    Abstract: A wireless hybrid time division multiple access/code division multiple access (TDMA/CDMA) user equipment (UE) includes a signaling receiver and a data detection device in communication with the signaling receiver. The signaling receiver is configured to receive and recover signaled information of code and timeslot assignments of the UE to support an RF communication. The data detection device is configured to recover from the signaling information an identifier of a plurality of assigned timeslots and an indication of a first and last code of a set of consecutive codes. The last code is identified by an identifier associated with the last code, and the same set of consecutive codes are assigned to each of the plurality of assigned timeslots.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: May 1, 2012
    Assignee: InterDigital Technology Corporation
    Inventors: Stephen E. Terry, Stephen G. Dick, James M. Miller, Eldad M. Zeira, Ariela Zeira
  • Patent number: 8165149
    Abstract: A medium-reservation mechanism improves transmission efficiency in a multiple-channel network that includes stations with limited-selectivity receivers. The mechanism employs a medium-request signal that conveys channel information. In this network, stations check the channel information in the medium-request signal to decide whether or not to comply with the medium-request signal. If the channel information identifies the channel that is close to the channel that the station is presently operating on, the station then complies with the medium-request signal. If the channel information identifies a channel other than the channel that the station is presently operating on, the station ignores the medium-request signal.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: April 24, 2012
    Assignee: Agere Systems Inc.
    Inventors: Wilhelmus Diepstraten, Richard M. van Leeuwen, Leo Monteban
  • Patent number: 8165148
    Abstract: A system and method for a time-scalable priority-based scheduler. A flexible scheduling algorithm utilizing variable scheduling durations enables better system capacity utilization. A rate request is transmitted if data arrives in a buffer, data in the buffer exceeds a buffer depth, and sufficient power exists to transmit at the rate requested. A rate assignment responsive to the rate request indicates a scheduled duration and a scheduled rate applicable for the scheduled duration. The scheduled duration is less than or equal to a scheduling period. The scheduling period is an interval of time and after which a scheduler makes a scheduling decision. The scheduling period is variable and the scheduled duration is variable.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: April 24, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Avinash Jain, Jelena Damnjanovic, Tao Chen
  • Patent number: 8160167
    Abstract: By assigning a plurality of subcarriers 31 to a data channel 33 and assigning fewer subcarriers 32 than the plurality of subcarriers 31 to a control channel 34 and, in addition, locating the control channel 34 at the center frequency fc of a frequency band used to transmit the data channel 33, on the radio receiving apparatus side, the frequencies of a local signal by which the received signal is multiplied share the same value, thereby speeding up the switching between the control channel and the data channel.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: April 17, 2012
    Assignee: Panasonic Corporation
    Inventor: Kenichi Miyoshi
  • Patent number: 8155070
    Abstract: A method for transmitting information of resources for use in transmission of ACK/NACK signals in a mobile communication system is disclosed. An example method for receiving ACK/NACK signals in a mobile communication system is also disclosed. When resources for transmission of data and resources for transmission of control information of the data are scheduled through virtual unit resources, the method identifies information of resources for receiving an ACK/NACK signal for transmission data mapped to information of at least one of a virtual unit resource allocated to the transmission data and a virtual unit resource allocated to control information of the transmission data, and receives the ACK/NACK signal for the transmission data through the information of resources for receiving the ACK/NACK signal.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: April 10, 2012
    Assignee: LG Electronics Inc.
    Inventors: Dae Won Lee, Bong Hoe Kim, Young Woo Yun, Ki Jun Kim, Dong Wook Roh, Suk Hyon Yoon, Joon Kui Ahn, Dong Youn Seo, Hak Seong Kim, Jung Hoon Lee, Eun Sun Kim, Sung Duk Choi
  • Patent number: 8155140
    Abstract: Determining if a packetized wireless signal is present on a wireless communication medium. A first signal may be received from the wireless communication medium. A correlation of the first signal may be performed using a delayed version of the first signal to produce a correlation result. The delayed version may be delayed by a time period corresponding to a packet structure of a wireless communication protocol used by signals transmitted on the wireless communication medium. It may be determined if the correlation result indicates presence of a packetized wireless signal in the first signal. The packetized wireless signal may have the packet structure of the wireless communication protocol. If the correlation result does not indicate presence of the packetized wireless signal in the first signal, wireless communication may be performed over the wireless communication medium.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: April 10, 2012
    Assignee: Qualcomm Atheros, Inc.
    Inventor: Paul J. Husted
  • Patent number: 8155224
    Abstract: A transmission method for transmitting modulation signals of a plurality of channels to the same frequency band from a plurality of antennas. At the time when a symbol used for demodulation is inserted in a channel, in another channel symbol, the same phase and quadrature signals in the in-phase-quadrature plane are made to be zero signals. Thus, a plurality of modulation signals are multiplexed and transmitted and the transmitted multiplexed modulation signals are demultiplexed and demodulated at a reception apparatus, thereby improving the data transmission rate.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: April 10, 2012
    Assignee: Panasonic Corporation
    Inventors: Yutaka Murakami, Masayuki Orihashi, Akihiko Matsuoka
  • Patent number: 8149879
    Abstract: A method of data transmission according to one embodiment of the invention includes encoding a set of data values to produce a corresponding series of ordered n-tuples. The method also includes transmitting, according to the series of ordered n-tuples, a plurality of bursts over a plurality n of frequency bands. Specifically, for each of the plurality of bursts, a frequency band occupied by the burst is indicated by the order within its n-tuple of an element corresponding to the burst. A bandwidth of at least one of the plurality of bursts is at least two percent of the center frequency of the burst. Information is encoded into a polarity of at least one of the plurality of bursts.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: April 3, 2012
    Assignee: General Atomics
    Inventors: Gerald D. Rogerson, David S. Furuno, Stephan W. Gehring, Michael L. Walker, Roberto Aiello
  • Patent number: 8149952
    Abstract: A multi-mode receiver system for processing signals based on a plurality of systems is disclosed. Embodiments of the invention provide for a shared architecture for processing baseband signals corresponding to a plurality of systems.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: April 3, 2012
    Assignee: Skyworks Solutions, Inc.
    Inventors: Bala Ramachandran, Aravind Loke
  • Patent number: 8144752
    Abstract: Disclosed is a receiver and a method for receiving a radio-electric navigation signal modulated by a carrier at a frequency fp, a sub-carrier at a frequency fsp and a pseudo-random code at a frequency fc, in which the radio-electric signal is converted into a two-way base band I, Q, characterized in that K modified pseudo-random codes, where K=?·fsp/fc, a being a predetermined integer, are generated locally by a modified code generator, each modified code having, during a time duration Tk where Tk=1/?·fsp, the shape of the pseudo-random code without the sub-carrier, and being offset in time by a duration Tk of the preceding modified pseudo-random code; in both ways, the signal is multiplied by the K modified codes and is phase- and quadrature-correlated by two phase and quadrature sub-carriers generated locally.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: March 27, 2012
    Assignee: Centre National d'Etudes Spatiales
    Inventor: Antoine Richard de Latour
  • Patent number: 8139473
    Abstract: Provided is a mobile station capable of effectively reporting control information in RACH. In the mobile station, a signature selection unit (111) selects one of different code sequences as a signature according to inputted control information and a modulation unit (112) modulates a signature (code sequence). In a table provided in the signature selection unit (111), for control information ‘000’, CAZAC sequence #1 as a basic code sequence and a derived code sequence of shifts 0 to 7 derived from the CAZAC sequence #1 are set while being correlated to each other. The derived code sequence of shifts 0 to 7 of the CAZAC sequence #1 respectively correspond to signatures #1 to #8. Moreover, for control information ‘001’, CAZAC sequence #2 as a basic code sequence and a derived code sequence of shifts 0 to 7 derived from CAZAC sequence #2 are set while being correlated to each other. The derived code sequence of shifts 0 to 7 of the CAZAC sequence #2 respectively correspond to the signatures #9 to #16.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: March 20, 2012
    Assignee: Panasonic Corporation
    Inventors: Daichi Imamura, Sadaki Futagi, Atsushi Matsumoto, Takashi Iwai, Tomofumi Takata
  • Patent number: 8139536
    Abstract: Techniques for explicit feedback delay measurement are described. An apparatus may comprise a processor to generate a steering matrix for transmit spatial processing over a channel, determine a delay time associated with explicit feedback information for the channel, and determine whether to modify the steering matrix with the explicit feedback information based on the delay time. Other embodiments are described and claimed.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: March 20, 2012
    Assignee: Intel Corporation
    Inventors: Trainin B Solomon, Kasher Assaf, Kaidar Oren, Myszne Jorge, Basson Gal
  • Patent number: 8135017
    Abstract: The invention relates to a method and an arrangement for obtaining efficient radio resource allocation in a mobile communication network comprising a communication network entity (15) and at least one user equipment (18) transmitting data to said mobile communication network entity (15) over a radio interface. A first data transmission from said at least one user equipment (18) is received, whereby said first transmission is decoded and a message (ACK/NACK) based on a result of the decoding is sent on a downlink channel (13) comprising information of said first received data transmission. A second data transmission from said at least one user equipment (18) is received, whereby the power on said downlink channel (13) is adjusted depending on the result of said decoding and the content in said received second data transmission.
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: March 13, 2012
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Eva Englund, Stefan Parkvall, Gunnar Bark, Ke Wang Helmersson, Mats Sågfors, Rong Hu
  • Patent number: 8134990
    Abstract: A wireless device (24) receives a reference signal over a radio channel (21). The reference signal may be Positioning Reference Signals (PRS) and/or Common Referencing Signals (CRS), and may be transmitted from a transmitter (22). The wireless device (24) comprises a correlator (100); a reference signal detector (102); a threshold selector (106); and a reference signal analyzer (108). The correlator (100) use a signal received from the radio channel (21) and a replica of the reference signal to provide a correlator output value. The reference signal detector (102) compares the correlator output value with a threshold value to detect presence of a reference signal, and to estimate an arrival time of the reference signal. The threshold selector (106) adapts the threshold value to at least an estimate of a relative amount of noise and interference power in the received signal.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: March 13, 2012
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ari Kangas, Iana Siomina
  • Patent number: 8130727
    Abstract: Systems and methodologies are described that facilitate increasing throughput in a time-division duplexed CDMA wireless communication environment. A set of orthogonal Walsh code sequences can be assigned to a first group of users in a network sector, and a duplicate set of orthogonal Walsh code sequences can be assigned to at least a second group of users in the sector. A number of receive antennas equal or greater than to the number of duplicate code sets being assigned can be deployed to linearly scale sector capacity to meet user demand. Additionally, user devices employing duplicate Walsh code sequence assignments at a base station serving the sector can be distinguished from each other, and timing offsets between such users can be enforced to mitigate any jamming effect at the base station receiver.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: March 6, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Sharad Deepak Sambhwani, Kee-Bong Song, Juan Montojo
  • Patent number: 8131306
    Abstract: Embodiments of a wireless access network and method for allocation time and frequency resources are generally described herein. Other embodiments may be described and claimed. In some embodiments, a base station allocates contiguous groups of data subcarriers of a downlink subframe to closed-loop user stations, and allocates the remaining data subcarriers of the downlink subframe to open-loop user stations to increase frequency diversity.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: March 6, 2012
    Assignee: Intel Corporation
    Inventors: Minnie Ho, Qinghua Li, Xintian E Lin, Vallabhajosyula S. Somayazulu, Shilpa Talwar
  • Patent number: 8130781
    Abstract: An approach is provided for communicating in a multi-carrier system. A carrier selector selects one or more carriers among a plurality of carriers for transport of data over the multi-carrier system, wherein the data is transmitted using the selected carriers.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: March 6, 2012
    Assignee: Intellectual Ventures I LLC
    Inventors: Haihong Zheng, Rene Purnadi, Naveen Kakani, Adrian Boariu, Prabodh Varshney
  • Patent number: 8130719
    Abstract: An access node anchoring a connection to, e.g., a PDSN in a core network establishes a session with a mobile station and assigns the mobile station an identifier such as a UATI. The anchor node sends the UATI to the PDSN, such as in a GRE key where the data link is a GRE tunnel. If the anchor node fails and data addressed to the mobile station comes to the PDSN, it may initiate a page for the mobile using the UATI. The anchor node may additionally send the PDSN the session seed and optionally the mobile station's network location. A registration zone may be defined to include access nodes within a predetermined distance of the anchor node, and the mobile station forced to re-register when moving outside of the registration zone. In this case, the PDSN may initiate a page for the mobile station only within the registration zone.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: March 6, 2012
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Sven Anders Borje Svensson, Vincent Baglin, Hai Le, Prashanth Sharma
  • Patent number: 8125884
    Abstract: A communication system includes a transmitter. The transmitter transmits information by using a plurality of pre-coding codebooks.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: February 28, 2012
    Assignee: Marvell International Ltd.
    Inventors: Yu-Ngok Li, Raphael Cendrillon
  • Patent number: 8125971
    Abstract: 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.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: February 28, 2012
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventor: Fredrik Hammar
  • Patent number: 8121152
    Abstract: A method for encoding a broadcast channel protocol data unit (BCH PDU) based on a broadcast control channel (BCCH) scheduling error in a universal mobile telecommunications system (UMTS) having a Node B and a radio network controller includes setting up a call between the radio network controller and the Node B to receive system information and scheduling information for a system information update from the radio network controller; initializing broadcast channel protocol data units and control information for every system frame number (SFN) at the Node B; and detecting the broadcast control channel scheduling error on the scheduling information for the system information update based on segment types of the system information when combining the system information for every system frame number. In case the broadcast control channel scheduling error is not detected, the broadcast channel protocol data units are encoded to be incorporated therein the system information.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: February 21, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Yunhee Cho, Ji Yeon Kim, Gweon Do Jo, Jin Up Kim