Using Multiple Antennas At A Station Patents (Class 370/334)
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Patent number: 8873364Abstract: An Ordered Reduced Set Successive Detector (RSSD) for the V-BLAST spatial multiplexing scheme that uses a general two-dimensional non-uniform set partitioning for different symbols. The detector provides improved diversity and SNR gains at reduced complexity compared to a uniform set partitioning based detector. The detector can be used to reduce the complexity, with a small tradeoff in performance. Further, it is possible to obtain a quasi-ML performance using the disclosed detector at a reduced, yet fixed, complexity.Type: GrantFiled: January 18, 2013Date of Patent: October 28, 2014Assignees: Centre of Excellence in Wireless Technology, IIT-Hyderabad, IIT-MadrasInventors: Kiran Kumar Kuchi, Bhaskar Ramamurthi, Karthik Kuntikana Shrikrishna
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Patent number: 8873585Abstract: The invention is directed to a method and system for supporting MIMO technologies which can require the transport of multiple spatial streams on a traditional Distributed Antenna System (DAS). According to the invention, at one end of the DAS, each spatial stream is shifted in frequency to a pre-assigned band (such as a band at a frequency lower than the native frequency) that does not overlap the band assigned to other spatial streams (or the band of any other services being carried by the DAS). Each of the spatial streams can be combined and transmitted as a combined signal over a common coaxial cable. At the other “end” of the DAS, the different streams are shifted back to their original (overlapping) frequencies but retain their individual “identities” by being radiated through physically separate antenna elements.Type: GrantFiled: December 17, 2007Date of Patent: October 28, 2014Assignee: Corning Optical Communications Wireless LtdInventors: Yair Oren, Igor Berlin, Ofer Saban, Isaac Shapira, Rami Reuven
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Patent number: 8873662Abstract: Multiple-input multiple-output (MIMO) with multiple power amplifiers and antennas in a mobile transmitter, such as a user equipment for a cellular telephone communication system, has such great impacts on the transmitter's battery life, form factor, and complexity that it should not be used unless its benefits clearly outweigh its costs. Methods and apparatus enable the benefits of MIMO by beam-forming and antenna-switching to be obtained without incurring the drawbacks of increased current consumption due to multiple power amplifiers.Type: GrantFiled: April 5, 2012Date of Patent: October 28, 2014Assignee: Ericsson Modems SAInventors: Stefania Sesia, Fabrizio Tomatis
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Patent number: 8873515Abstract: Dynamically control of receive diversity switching in a user equipment (UE) is disclosed. By dynamically controlling the switching between enabling and disabling the receive diversity, power consumption in UEs, such as smart phones and other mobile devices may be reduced. Control is based, at least in part, on measurements for data activity performed by the UE. When the UE finds measurements that would suggest data activity, the UE will switch to enable a receive diversity state when conditions are available for the switch. Similarly, when the UE finds measurements that would suggest data inactivity, the UE will switch to disable the receive diversity state when conditions are available for the switch.Type: GrantFiled: April 4, 2012Date of Patent: October 28, 2014Assignee: QUALCOMM IncorporatedInventors: Nitin Kasturi, Vidyut M. Naware, Ketan N. Patel
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Patent number: 8868082Abstract: A mobile communication device includes a processor and a communication subsystem coupled to the processor. The communication subsystem is configured to provide the mobile device with wireless communications via an access point of a wireless network. The mobile device communicates with the access point via the communication subsystem for adjusting boundaries of an RF coverage region of the access point. The mobile device subsequently communicates with the access point via the communication subsystem in the adjusted RF coverage region for handoff to another wireless network, while the access point serves as part of a handoff indication mechanism in the wireless network.Type: GrantFiled: January 17, 2012Date of Patent: October 21, 2014Assignee: BlackBerry LimitedInventor: Vytautas Robertas Kezys
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Patent number: 8867469Abstract: The present invention provides a method and apparatus for transmitting uplink control information (UCI) by user equipment in a wireless communication. The user equipment performs channel coding on information bits of the UCI to generate encoding information bits; performs modulation on the thus generated encoding information bits to generate complex modulation symbols; spreads the complex modulation symbols block-wise to a plurality of single carrier-frequency division multiple access (SC-FDMA) symbols based on an orthogonal sequence; and transmits the spread complex modulation symbols to a base station.Type: GrantFiled: January 12, 2011Date of Patent: October 21, 2014Assignee: LG Electronics Inc.Inventors: Seung Hee Han, Jae Hoon Chung, Sung Ho Moon, Moon Il Lee
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Patent number: 8867493Abstract: Certain aspects of the present disclosure support techniques for cooperative beamforming based on inter-cell coordination. Signaling design allows coordinated downlink transmissions with reduced inter-cell interference.Type: GrantFiled: February 1, 2010Date of Patent: October 21, 2014Assignee: QUALCOMM IncorporatedInventors: Alexei Y. Gorokhov, Jaber M. Borran
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Patent number: 8868132Abstract: Wireless communication techniques for cellular deployment of wireless communication systems with transmitters in each cell to have partially overlapped transmission patterns between two adjacent transmitters. Implementations of the described techniques can provide transmit diversity with intentional partial beam pattern overlays to improve cell sectorization or frequency re-use factor, at the same time, reduce intra-cell and inter-cell interference. Various modulations may be used in the described systems, including FDMA, TDMA, and OFDMA modulation schemes.Type: GrantFiled: May 21, 2012Date of Patent: October 21, 2014Assignee: ZTE (USA) Inc.Inventors: Jason Hou, Dazi Feng, Sean Cai, Mary Chion, Jing Wang
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Patent number: 8867590Abstract: Disclosed are a control method and a control device for implementing two-way communication in a wireless network. A repeater can measure a channel matrix, which indicates channel information of each of a plurality of nodes based on signals received simultaneously from the plurality of the nodes, and calculate a first basic lattice size, which initializes the lattice sizes of the received signals according to predefined rules. Then, the repeater uses the channel matrix of each of the nodes and the initialized first lattice size to calculate for each of the nodes a first normalization factor, which normalizes the sizes of the signals simultaneously received from each of the nodes, and a minimum normalized factor, which is equivalent to the minimum value of the first normalization factor.Type: GrantFiled: March 10, 2011Date of Patent: October 21, 2014Assignees: LG Electronics Inc., Inha Industry Partnership InstituteInventors: Han Byul Seo, Daeyoung Park, Byoung Hoon Kim
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Patent number: 8867647Abstract: A system is provided for transmitting a low code rate spatially multiplexed channel on multiple antennas. The system includes a transmitter and a processor. The processor is configured such that the processor encodes a block of information bits to form channel coded bits, wherein the ratio of the number of channel coded bits to the number of information bits is greater than one; and the processor maps the channel coded bits to modulation symbols, and each channel coded bit is mapped once to a modulation symbol. The transmitter is configured to transmit a first portion of the modulation symbols using a spreading sequence on a first antenna of the multiple antennas and to transmit a second portion of the modulation symbols using the spreading sequence on a second antenna of the multiple antennas.Type: GrantFiled: December 10, 2012Date of Patent: October 21, 2014Assignee: BlackBerry LimitedInventors: Robert Mark Harrison, Hua Xu, Andrew Mark Earnshaw, Zhijun Cai
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Patent number: 8867446Abstract: The present invention relates to a terminal which receives signals from a base station, and to a method in which the terminal receives signals from the base station in a distributed antenna system (DAS). The terminal receives, from the base station having a plurality of antennas, control information on one or more active transmission antennas allocated to the terminal, from among the plurality of antennas, and receives signals from the base station via said one or more active transmission antennas.Type: GrantFiled: January 21, 2011Date of Patent: October 21, 2014Assignee: LG Electronics Inc.Inventors: Ji Won Kang, Bin Chul Ihm, Jin Young Chun
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Patent number: 8868009Abstract: A method for multi-beam forming based on joint receiving and transmitting end information is provided. The method includes: a transmitting end decomposing a channel matrix H using a geometric mean decomposition (GMD) way to obtain a unitary matrix P; the transmitting end using the unitary matrix P as a weight matrix of GMD beam forming and executing multi-beam forming processing on an original transmission signal x. The present invention also provides a system for multi-beam forming based on joint receiving and transmitting end information, and a transmitting device and receiving device for supporting multi-beam forming based on joint receiving and transmitting end information. By using geometric mean decomposition way to decompose the channel matrix H, the sub channels corresponding to various beams obtain the equal gain. When the channel is ill-conditioned, the channel equalization will not interfere with searching the perturbation vector, thereby avoiding the performance degradation.Type: GrantFiled: June 30, 2010Date of Patent: October 21, 2014Assignee: ZTE CorporationInventors: Yanwen Wang, Wenhao Liu, Yan Li
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Patent number: 8867495Abstract: A method for generating feedback data is described. A downlink message is received from a base station. It is determined whether full channel reciprocity or partial channel reciprocity is enabled at a transmitter. A mode for feedback data generation is determined. Feedback data is generated using the determined mode. The feedback data includes beamforming information. The feedback data is transmitted to the base station. The feedback data may include a channel quality indicator (CQI) and a rank.Type: GrantFiled: March 16, 2010Date of Patent: October 21, 2014Assignee: QUALCOMM IncorporatedInventors: Amir Farajidana, Alexei Gorokhov, Kapil Bhattad, Ravi Palanki, Juan Montojo
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Patent number: 8867656Abstract: When a determination is made that communication by an SM scheme is suitable, a setting unit performs switching from a communication level by an STC scheme to the communication level by the SM scheme, between the communication level at a first level of MCS by the space-time coding scheme and the communication level at a second level of MCS by the SM scheme. When a determination is made that communication by the SM scheme is unsuitable, the setting unit performs switching from the communication level by the STC scheme to the communication level by the spatial multiplexing scheme, between the communication level at a third level of MCS, which is higher than the first level, by the space-time coding scheme and a fourth level of the modulation scheme and the coding rate, which is higher than the second level, by the SM scheme.Type: GrantFiled: December 14, 2011Date of Patent: October 21, 2014Assignee: KYOCERA CorporationInventor: Takeo Miyata
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Patent number: 8862178Abstract: Systems and methods of managing concurrent access using different network identities using a shared baseband hardware implementation are described. A wireless apparatus comprises a computing device, a baseband device, the baseband device including at least a modem processor, and computer readable storage medium that stores one or more instructions. The instructions, when executed by the computing device, are configured to associate a first identity of the wireless apparatus with a first wireless network, associate a second identity of the wireless apparatus with a second wireless network, enable the first identity to communicate over the first wireless network using the baseband device, and enable the second identity to communicate over the second wireless network using the baseband device. Data obtained by concurrently utilizing the baseband device utilizing different network identities and different networks can be aggregated on the wireless apparatus.Type: GrantFiled: February 23, 2011Date of Patent: October 14, 2014Assignee: QUALCOMM IncorporatedInventors: Dilip Krishnaswamy, Hoang V. Nguyen
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Patent number: 8861480Abstract: Methods provided may generally include sending a BS of a first RAT a request message indicating a set of MIMO resources to reallocate; during a scan duration, communicating with the BS of the first RAT using non-reallocated MIMO resources and communicating with a BS of a second RAT using reallocated MIMO resources; and during a normal duration, communicating with the BS of the first RAT using the reallocated and non-reallocated MIMO resources. Apparatus provided may generally include logic for receiving a request message indicating a set of MIMO resources of the MS to reallocate; logic for, during a scan duration, communicating with the MS in a first transmission mode assuming the use of only non-reallocated MIMO resources by the MS; and logic for, during a normal duration, communicating with the MS in a second transmission mode assuming the use of the reallocated and non-reallocated MIMO resources by the MS.Type: GrantFiled: October 31, 2009Date of Patent: October 14, 2014Assignee: QUALCOMM IncorporatedInventors: Tom Chin, Guangming Carl Shi, Kuo-Chun Lee, Serguei A. Glazko, Matthias Brehler
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Patent number: 8861430Abstract: Procedures for point association as well as measurement and feedback required to enable point association for CoMP deployment scenario 4 are proposed. In a first novel aspect, a serving eNB configures a first higher-layer configuration for RSRP measurement to be used by a UE for serving point selection. The higher-layer configuration contains multiple CSI-RS configurations, and each CSI-RS configuration indicates a set of resource elements (REs) or subcarriers in both frequency domain and time domain as one CSI-RS resource with non-zero transmission power. The UE then performs RSRP measurements based on the multiple CSI-RS configurations and reports RSRP measurement results to the serving eNB. In a second novel aspect, the serving eNB configures a second higher-layer configuration for CSI reporting based on the reported RSRP measurement results. In a third novel aspect, the serving eNB sends CSI-RS information to the UE for uplink power control.Type: GrantFiled: August 9, 2012Date of Patent: October 14, 2014Assignee: Mediatek Inc.Inventors: Pei-Kai Liao, Chih-Yuan Lin
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Patent number: 8855552Abstract: A method is presented for transmitting data in a satellite system having multiple spot beams comprising (1) sending a broadband signal in a forward direction from a gateway terminal to a communications satellite for relay to at least one subscriber terminal, (2) receiving the broadband signal at the communications satellite, wherein the communications satellite comprises a bent pipe repeater having a plurality of satellite-based transmission amplifiers, (3) using one of the plurality of satellite-based transmission amplifiers to amplify the broadband signal and no other broadband signal from the gateway terminal, to produce an amplified broadband signal, (4) sending the amplified broadband signal as one of a plurality of service spot beams to the at least one subscriber terminal, and (5) receiving and retrieving data from the amplified broadband signal at the at least one subscriber terminal.Type: GrantFiled: August 6, 2008Date of Patent: October 7, 2014Assignee: ViaSat, Inc.Inventors: Mark D. Dankberg, Mark J. Miller, Steven R. Hart, Kristi Jaska, Robert Wilson
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Patent number: 8855097Abstract: It is described a communication end device comprising (a) a radio transceiver comprising a receiver for receiving radio signals from a transmitting network entity of a cellular telecommunication network and a transmitter (110, 120, 130) for transmitting radio signals to a receiving network entity of the cellular telecommunication network, (b) a further receiver (140) for receiving a further radio signal, and (c) a control circuit (150, 162, 164), which is coupled to the radio transceiver and to the further receiver (140). The control circuit (150, 162, 164) is configured for generating a control signal for controlling the operation of the further receiver (140). Thereby, the control signal is based on a synchronization signal being related to a time dependent transmission scheme of the transmitter (110, 120, 130) and on an information about the current operational state of the radio transceiver.Type: GrantFiled: June 30, 2010Date of Patent: October 7, 2014Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventor: Markus Neumann
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Patent number: 8848668Abstract: The invention relates to a method for configuring a context for a connection delivering a packet data service to a mobile terminal via a target wireless access network. The mobile terminal is initially connected to an originating wireless access network and the packet data service may be provided to the mobile terminal via the originating wireless network. Moreover, the invention provides an authentication server, a packet data gateway and a packet data service support node which participate in the context configuration method. To provide a method that allows establishing connection for packet service delivery to a mobile terminal from a wireless access network, as for example a UMTS, as fast as possible the invention suggests to preconfigure service provision of the packet data service via the target wireless access network by establishing a context prior to the mobile terminal connecting to the target wireless access network.Type: GrantFiled: June 28, 2012Date of Patent: September 30, 2014Assignee: Panasonic Intellectual Property Corporation of AmericaInventors: Jens Bachmann, Rolf Hakenberg
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Patent number: 8848773Abstract: Devices and methods for determining transmission rates based on a virtual diversity receiver (VDR) scheme are disclosed. Performance is improved through determination of appropriate transmission rates, which are determined based on one or more signal to interference plus noise ratios (SINRs). The SINRs are calculated using virtual noise and channel coefficient values obtained as part of the VDR scheme. Utilizing an underlying pilot structure a user device may receive several sets of symbols. These symbols are then used to obtain both real and virtual channel noise power values and channel coefficients. These values and coefficients are then used to determine first and second SINR values indicative of one or more channels in the communication network. These SINR values may correlate to transmission rates (modulation order and/or coding rate). The SINRs may be sent to a base station, or the user device itself may determine one or more transmission rates.Type: GrantFiled: October 2, 2012Date of Patent: September 30, 2014Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Ali S. Khayrallah, Yi-Pin Eric Wang
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Patent number: 8848605Abstract: The disclosure relates to a ground-based wireless cellular communication system providing in-flight broadband mobile communication services. The system includes at least one ground-based base station adapted for generating at least one cell defining a solid angle of space surrounding the base station. The ground-based base station includes an antenna array using two-dimensional-beamforming for generating at least one beam for serving at least one airplane in the space covered by the at least one cell using spatial-division multiple access (SDMA). The disclosure also relates to an airplane equipment for providing in-flight broadband mobile communication services.Type: GrantFiled: July 23, 2009Date of Patent: September 30, 2014Assignee: Alcatel LucentInventors: Michael Ohm, Thorsten Wild, Michael Schmidt
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Patent number: 8848815Abstract: A method and apparatus for providing channel feedback is provided herein. During operation a covariance matrix at time t (R) is calculated as a function of a received downlink signal. Matrix Ct is also calculated and is based on a previous quantized covariance matrix (Rqt?1), the covariance matrix (R) at time t, and a forgetting factor (?) that is applied to Rqt?1. The Ct is then used to create a DERC feedback message (signal or waveform) and may be transmitted with pilots on a proper feedback channel to a base unit. The base unit receives the feedback (Ct) as a DERC waveform on a proper feedback channel. The base unit uses non-coherent or coherent detection to detect the DERC values send by the remote unit and uses the DERC values with a previous quantized covariance matrix estimate, a forgetting factor, and a weighting value to compute a covariance matrix estimate to use for beamforming.Type: GrantFiled: June 24, 2013Date of Patent: September 30, 2014Assignee: Motorola Mobility LLCInventors: Timothy A. Thomas, Bishwarup Mondal, Eugene Visotsky, Frederick W. Vook
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Patent number: 8843150Abstract: A data transmission method for a base station to acquire transmission beam diversity in a wireless communication system is provided. The data transmission method includes selecting at least two transmission beams to be used for data transmission from among multiple transmission beams corresponding to transmission beam information, if receiving the transmission beam information regarding the multiple transmission beams from a terminal, and transmitting data encoded with a predetermined orthogonalization code to the terminal via the selected at least two transmission beams.Type: GrantFiled: December 28, 2012Date of Patent: September 23, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Hyun-Kyu Yu, Tae-Young Kim, Ji-Yun Seol, Su-Ryong Jeong, Jeong-Ho Park
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Patent number: 8842640Abstract: The present invention relates to a pre-coding method for spatial multiplexing, comprising the steps of: performing a beam search for beam forming with a receiver device equipped with multiple antennas to perform pre-coding for spatial multiplexing in a transmitter device equipped with multiple antennas; transmitting a first packet including at least one or more training sequences to the receiver device after completion of said beam search; receiving, from the receiver device, a second packet including feedback information for pre-coding, determined in the receiver device by using the training sequences; and performing pre-coding for spatial multiplexing, onto the data stream to be transmitted to the receiver device, by using the pre-coding matrix calculated on the basis of the feedback information.Type: GrantFiled: November 2, 2009Date of Patent: September 23, 2014Assignee: LG Electronics Inc.Inventors: Beom Jin Jeon, Joong Heon Kim, Alexey Rubtsov, Alexander Flaksman, Sergey Tiraspolsky
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Patent number: 8842606Abstract: A transmitting and a receiving apparatus, a system and a method of performing multi-user transmission to other transmission ends include broadcasting a request for transmission to the other transmission ends. A request is provided with a Medium Access Control MAC frame which includes a list of at least two identifications of receiving ends which are requested to reply to the request.Type: GrantFiled: August 26, 2008Date of Patent: September 23, 2014Assignee: Koninklijke Philips N.V.Inventors: Theodorus Jacobus Johannes Denteneer, Hans Juergen Reumerman, Jelena Mirkovic, Bernard Walke, Michael Einhaus, Semih Serbetli, Sri Andari Husen
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Patent number: 8842554Abstract: The embodiments of the invention describe a method for antenna selection in a wireless communication network. The network includes a transceiver having a set of antennas. The transceiver is configured to transmit a frequency-hopped sounding reference signal (SRS) over a subband from a subset of antennas at a time. The transceiver transmits the frequency-hopped SRS from subsets of antennas in the set of antennas substantially alternately. In response to the transmitting, the transceiver receives information indicative of an optimal subset of antennas and transmits data from the optimal subset of antennas.Type: GrantFiled: March 31, 2009Date of Patent: September 23, 2014Assignee: Mitsubishi Electric Research Laboratories, Inc.Inventors: Neelesh B. Mehta, Koon Hoo Teo, Jinyun Zhang
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Patent number: 8842639Abstract: A method for transmitting a pilot signal in a downlink MIMO (Multi Input Multi Output) supporting multiple transmission antenna is disclosed. The method includes transmitting a subframe to which cell-specific pilot symbols and User Equipment-specific (UE-specific) pilot symbols are mapped, in which the cell-specific pilot symbols are mapped to a first region of the subframe and the UE-specific pilot symbols are mapped to a second region of the subframe.Type: GrantFiled: October 1, 2009Date of Patent: September 23, 2014Assignee: LG Electronics Inc.Inventors: Moon Il Lee, Seung Hee Han, Ja Ho Koo, Hyun Soo Ko, Jae Hoon Chung, Bin Chul Ihm
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Patent number: 8842622Abstract: A method and apparatus may be used to enable reception of a downlink (DL) shared channel in a cooperative multipoint transmission (CoMP). The method and apparatus may determine whether CoMP is applied to a transmission. The method and apparatus may acquire other CoMP related information. The method and apparatus may apply to non-transparent CoMP scenarios.Type: GrantFiled: January 6, 2012Date of Patent: September 23, 2014Assignee: Interdigital Patent Holdings, Inc.Inventors: Guodong Zhang, Ghyslain Pelletier, Afshin Haghighat, Paul Marinier, Christopher Cave, Pascal M. Adjakple, Allan Y. Tsai
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Patent number: 8842542Abstract: Apparatus and methods of scheduling one or multiple streams for a user equipment (UE) include receiving a single happy bit for the one or multiple streams, determining a set of scheduling grants for a UE configured to transmit over the one or multiple streams, and transmitting the scheduling grant to the UE.Type: GrantFiled: February 6, 2013Date of Patent: September 23, 2014Assignee: QUALCOMM IncorporatedInventors: Danlu Zhang, Sharad Deepak Sambhwani, Arjun Bharadwaj, Ravi Agarwal, Sony J. Akkarakaran
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Patent number: 8837350Abstract: A communication method is provided for use in a network in which users are allocated respective symbol positions within timeslots for communication to the respective users from a base station. A signal periodically transmitted from at least two antennas of the base station to a user terminal represents coded information. The signal is transmitted within each of a plurality of periodic timeslots. Within each timeslot, each antenna transmits the same coded information only during an assigned symbol position. The symbol positions assigned to the respective antennas are separated in time according to a specified sequential spacing of symbol positions within the timeslot.Type: GrantFiled: June 30, 2010Date of Patent: September 16, 2014Assignee: Alcatel LucentInventors: John W. Niemasz, Jr., Walid Elias Nabhane
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Patent number: 8837336Abstract: An antenna arrangement has a first signal path connected to a first antenna. A second signal path is connected to a second antenna. A third signal path includes a device that measures the signal strength. Directional couplers couple the first and second signal paths to the third signal path. Filters filter out signal components that are coupled by one antenna into the other antenna.Type: GrantFiled: October 14, 2011Date of Patent: September 16, 2014
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Patent number: 8830965Abstract: This radio communication method is used to perform spatial multiplexing communication between cells in the overlap cell environment. In the MU-MIMO overlap cell environment, when a null is formed between a radio base station and a radio terminal station belonging to different cells, a first set of a “call signal” and a “response signal” is used to perform mutual detection with the radio base station and the radio terminal station belonging to different cells, and then a null is formed so as not to cause interference of radio waves between the radio base station and the radio terminal station belonging to different cells. At this time, the addresses of the radio base station and the radio terminal station are used to discriminate whether the radio base station and the radio terminal station belong to the same cell or different cells.Type: GrantFiled: July 8, 2010Date of Patent: September 9, 2014Assignee: Nippon Telegraph and Telephone CorporationInventors: Tomoki Murakami, Takeo Ichikawa, Riichi Kudo, Yasushi Takatori, Masato Mizoguchi, Takefumi Hiraguri, Kentaro Nishimori
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Patent number: 8830063Abstract: A system for recognizing animals in a detection zone (4) wherein the animals are provided with a label (6.i) that responds by transmitting a return signal with information when the label is (6.i) introduced into an electromagnetic interrogation field, provided with at least a transmitting and receiving system (2) for transmitting the electromagnetic interrogation field in the detection zone (4) and for receiving a return signal from a label (6.i) located in the detection zone (4), whereby the transmitting and receiving system (2) is provided with a plurality of antennas (8.i) for receiving a return signal from at least one label (6.i) present in the detection zone (4) wherein the antennas (8.i) are designed and arranged to discretely receive electromagnetic signals which come from mutually different subzones (4.i) wherein the subzones (4.i) in combination from the detection (4) zone.Type: GrantFiled: June 13, 2008Date of Patent: September 9, 2014Assignee: Nedap Agri B.V.Inventor: Derk Jan Roosenboom
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Patent number: 8830813Abstract: Systems, devices, and techniques for MIMO (Multiple-In-Multiple-Out) based space-frequency coding can include, in at least some implementations, techniques that include selecting a spatial multiplexing rate M for a transmission of data via two or more antennas, the data comprising N data streams, applying a first mapping to map the N data streams to a first portion of the antennas for a first data tone; and applying a different second mapping to map the N data streams to a different second portion of the antennas for a second data tone.Type: GrantFiled: April 16, 2012Date of Patent: September 9, 2014Assignee: Marvell International Ltd.Inventors: Hemanth Sampath, Ravi Narasimhan
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Patent number: 8825049Abstract: Certain embodiments of the present disclosure provide a unified scheme for selecting an operator and a radio access technology (RAT) by a multi-mode wireless device during a power-up or a handover process. By utilizing the proposed scheme, the mobile station may switch between RATs that are associated with the Worldwide Interoperability for Microwave Access (WiMAX), 3rd Generation Partnership Project (3GPP) or 3GPP2 standards.Type: GrantFiled: February 3, 2010Date of Patent: September 2, 2014Assignee: QUALCOMM IncorporatedInventors: Steven D. Cheng, Guangming Carl Shi, Kuo-Chun Lee, Tom Chin
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Patent number: 8824398Abstract: A transmitting station having plural antennas includes: a control information calculation unit that calculates control information for use by plural receiving stations according to a multi-user MIMO data transmission scheme; a control information transmission parameter calculation unit that calculates a control information transmission parameter based on spatial channel related information; and a control information transmission signal creation unit that creates a control information transmission signal, using the control information transmission parameter and a pilot signal. A resource element mapping unit maps control information transmission signals onto corresponding resource elements for transmission. On the other hand, the receiving stations each include a control information acquisition unit that acquires plural pieces of control information signaled on the corresponding resource elements, acquire control information destined for each receiving station, and demodulate received signals.Type: GrantFiled: August 12, 2009Date of Patent: September 2, 2014Assignee: Hitachi, Ltd.Inventors: Yunjian Jia, Takashi Yano, Shigenori Hayase
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Patent number: 8824420Abstract: A method and system generating signal to select a subset of antennas from a set of antennas to transmit user data in a wireless communication system. User data are transmitted during a first transmission time intervals (TTI) using a first subset of antennas. Pilot tones are transmitted during a second TTI using a second subset of antennas. Corresponding channels are estimated for the first subset of antennas and the second subset of antennas from the user data and the pilot tones. Then, based on the estimating, an optimal subset of antenna is selected from the first subset of antennas and the second subset of antennas to transmit the user data during a sequent TTI, and in which the selecting is performed adaptively.Type: GrantFiled: December 10, 2007Date of Patent: September 2, 2014Assignee: Mitsubishi Electric Research Laboratories, Inc.Inventors: Neelesh B. Mehta, Erdem Bala, Jinyun Zhang
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Patent number: 8824446Abstract: A wireless communication system includes a transmission device including plural transmission antennas and a receiving device including plural reception antennas. The transmission device includes a branching unit that branches a signal into plural transmission signals respectively passing plural signal lines each corresponding to each of the transmission antennas and delay units provided on at least one of the signal lines to apply a delay to the transmission signal. When a transmission signal branched by the branching unit is applied with a delay by the delay units, the transmission device sets the transmission signal on which the delay is applied as the transmission signal, and transmits the transmission signals to the receiving device via the transmission antennas.Type: GrantFiled: March 2, 2010Date of Patent: September 2, 2014Assignee: Mitsubishi Electric CorporationInventors: Hiroshi Nishimoto, Tomoya Yamaoka, Hiroshi Kubo
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Patent number: 8824434Abstract: A communication system, comprising a wireless communication device including a plurality of antennas communicatively coupled with a communication component, the communication component including a processor, a transmitter, and a receiver, the communication component configured to transmit a first data stream by simultaneously transmitting a first plurality of signal streams using the plurality of antennas, the first plurality of signal streams collectively representing the first data stream, the communication component configured to receive a second data stream by simultaneously receiving a second plurality of signal streams using the plurality of antennas and generating the second data stream from the second plurality of signal streams.Type: GrantFiled: October 26, 2010Date of Patent: September 2, 2014Assignee: IP Holdings, Inc.Inventors: Raman K. Rao, Sunil K. Rao, Sanjay K. Rao
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Patent number: 8817767Abstract: A storage unit stores a preamble signal defined in a legacy system and a preamble signal defined in a MIMO system. A monitoring unit in a transmitting apparatus monitors the existence of any communication apparatus which is not compatible with the MIMO system but accepts the legacy system. A channel characteristics acquiring unit derives the characteristics of a radio channel between the transmitting apparatus and a receiving apparatus. A selector selects a packet format based on a monitoring result obtained by the monitoring unit. The selector also selects where to place LTS, based on the characteristics of wireless channel derived by the channel characteristics acquiring unit.Type: GrantFiled: August 3, 2012Date of Patent: August 26, 2014Assignee: Hera Wireless S.A.Inventors: Seigo Nakao, Yasuhiro Tanaka, Nobuo Higashida
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Patent number: 8817590Abstract: In general, according to an embodiment, a wireless transmitter includes a plurality of coding and modulation modules to apply corresponding coding and modulation algorithms to input information blocks. A discrete Fourier transform (DFT) precoder applies DFT processing to outputs of the coding and modulation modules, and an inverse fast Fourier transform (IFFT) module receives a DFT output of the DFT precoder, which is mapped to different subcarriers according to the resource allocation indicated by the base station, and applies IFFT processing to the DFT output. An output processing stage produces output signals based on the output of the IFFT module to transmit wirelessly to a wireless receiver. In a different implementation, the outputs of the coding and modulation modules can be provided to an IFFT module to produce IFFT-processed output information.Type: GrantFiled: November 4, 2009Date of Patent: August 26, 2014Assignee: Apple Inc.Inventors: Lai-King Tee, Yi Song, Neng Wang, Chuandong Li
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Patent number: 8817898Abstract: A method and apparatus for filtering a received Orthogonal Frequency Division Multiplexed (ODFM) signal to reduce noise. The ODFM signal includes a plurality of symbols n in the time direction, each symbol including a plurality of sub-carriers k in the frequency direction, each a-th sub-carrier of each symbol being transmitted as a pilot sub-carrier with known amplitude and phase, and each symbol having its pilot sub-carriers spaced by b sub-carriers relative to the adjacent symbol. An m-tap filter is utilized for producing a filtered version of a selected pilot sub-carrier to be used in subsequent interpolation, by inputting into respective taps of the m-tap filter, m pilot sub-carriers surrounding the selected pilot sub-carrier. The m pilot sub-carriers each satisfy a relationship between n and k, wherein the relationship defines a diagonal line in the n-k plane.Type: GrantFiled: September 6, 2011Date of Patent: August 26, 2014Assignee: Imagination Technologies, LimitedInventors: Adrian John Anderson, Paul Damon Murrin
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Patent number: 8818291Abstract: A method for antenna calibration is provided, which includes the following steps: obtaining an updated calibration period T_i after the last time of antenna calibration (S301), calculating a calibration sequence of each antenna channel in the calibration period T_i (S302); according to the calibration sequence of each antenna channel, calibrating each antenna based on the calibration period T_i, and calculating a calibration error parameter (S303); and according to the obtained calibration error parameter, updating the calibration period T_i, and using the updated calibration period T_i for the next time of antenna calibration (S304). The technical solutions provided in the present invention, can monitor difference variety of radio channels in real time by the calibration error parameter, and reflect the calibration precision in real time by the reported calibration error parameter.Type: GrantFiled: January 31, 2011Date of Patent: August 26, 2014Assignee: China Academy of Telecommunications TechnologyInventors: Chuanjun Li, Changguo Sun
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Patent number: 8818419Abstract: A mobile device receives RF signals from base stations in a location scanning region. Each base station includes a plurality of distributed transceivers and each distributed transceiver includes an independently configurable antenna array. The mobile device generates and communicates channel measurements for the received radio frequency signals to a remote location server (RLS). The RLS configures, utilizing one or more channel transmit settings, the antenna array for the distributed transceivers to transmit the RF signals. The remote location server selects a subset of the communicated channel measurements for determining a position estimate for the mobile device having a desired resolution. The mobile device may receive the determined position estimate from the remote location server. The location scanning region may be determined based on GPS and/or WLAN positioning.Type: GrantFiled: October 17, 2013Date of Patent: August 26, 2014Assignee: Golba LLCInventor: Mehran Moshfeghi
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Patent number: 8818377Abstract: A radio terminal (10) includes an MIH user (14) configured to manage mobility from the first network to the second network; and an MIH function unit (13) configured to control a handover from the first network to the second network. The MIH user (14) notifies a link controller (12) via the MIH function unit (13) of a condition setting request including a first judgment logical formula being a condition to start an establishment of a radio link with the second network and a second judgment logical formula being a condition to execute a handover from the first network to the second network. The first judgment logical formula and the second judgment logical formula each indicate a combination of thresholds to be satisfied by a plurality of respective link is parameters in the radio link established with the first network.Type: GrantFiled: August 27, 2008Date of Patent: August 26, 2014Assignee: Kyocera CorporationInventor: Tomoyoshi Yokota
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Patent number: 8818418Abstract: A mobile device receives RF signals from base stations in a location scanning region. Each of the base stations includes a plurality of distributed transceivers and each distributed transceiver includes an independently configurable antenna array. The mobile device generates and communicates channel measurements for the received radio frequency signals to a remote location server (RLS). The RLS configures, utilizing one or more channel transmit settings, the independently configurable antenna array for the distributed transceivers in the location scanning region, to transmit the RF signals. The RLS determines a coarse position estimate for the mobile device for the sub-regions within the location scanning region and applies different signature functions to the determined coarse position estimate for the sub-regions to generate corresponding sub-regions position estimates.Type: GrantFiled: October 17, 2013Date of Patent: August 26, 2014Assignee: Golba LLCInventor: Mehran Moshfeghi
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Patent number: 8811267Abstract: A communication system for supporting a primary user and a secondary user is provided. A base station of a communication system, includes a scheduler to group at least one primary user and at least one secondary user corresponding to each of the at least one primary user according to characteristics of services desired by users, a superposition coding unit to perform superposition coding for primary data associated with the at least one primary user and secondary data associated with the at least one secondary user to generate a transmission data stream, and a beamformer to perform beamforming for the transmission data stream.Type: GrantFiled: August 13, 2008Date of Patent: August 19, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Jun Mo Kim, Chang Soon Park, Duck Dong Hwang, Sung Jin Kim, Pramod Viswanath
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Patent number: 8811352Abstract: A method of channel estimation for a signal having a first portion transmitted using a transmit delay diversity scheme and a second portion transmitted using another multi-antenna transmission scheme includes determining a composite channel estimate from the transmit delay diversity portion of the signal. The method continues with segregating the composite channel estimate into delay groups corresponding to time offsets of the transmit delay diversity scheme for determination of first channel estimates for each subset of transmit antennas. Second channel estimates are determined for each subset of transmit antennas as a function of pilot symbols received in the second portion of the signal and corresponding ones of the first channel estimates. Thus, the first channel estimates are used to improve estimation of the second channel estimates. The method and variations of it may be implemented by configuring one or more processing circuits within a receiver circuit.Type: GrantFiled: June 4, 2007Date of Patent: August 19, 2014Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Rajaram Ramesh, Havish Koorapaty, Kumar Balachandran
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Patent number: 8811353Abstract: A method of operating a user equipment device includes extracting at least one rank indicator (RI) from an uplink grant, and adapting a transmission rank in response to said RI. At least two transmit antennas are configured to transmit according to said transmission rank.Type: GrantFiled: April 15, 2009Date of Patent: August 19, 2014Assignee: Texas Instruments IncorporatedInventors: Runhua Chen, Eko N. Onggosanusi