US Patent No: 6,473,467

Number of patents in Portfolio can not be more than 2000

Method and apparatus for measuring reporting channel state information in a high efficiency, high performance communications system

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Abstract

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Channel state information (CSI) can be used by a communications system to precondition transmissions between transmitter units and receiver units. In one aspect of the invention, disjoint sub-channel sets are assigned to transmit antennas located at a transmitter unit. Pilot symbols are generated and transmitted on a subset of the disjoint sub-channels. Upon receipt of the transmitted pilot symbols, the receiver units determine the CSI for the disjoint sub-channels that carried pilot symbols. These CSI values are reported to the transmitter unit, which will use these CSI values to generate CSI estimates for the disjoint sub-channels that did not carry pilot symbols. The amount of information necessary to report CSI on the reverse link can be further minimized through compression techniques and resource allocation techniques.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
QUALCOMM INCORPORATEDSAN DIEGO, CA12512

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jalali, Ahmad San Diego, CA 147 2679
Wallace, Mark Bedford, MA 94 3682
Walton, Jay R Westford, MA 67 3260

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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WI-FI ONE, LLC (1)
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Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
QUALCOMM INCORPORATED (122)
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6,940,917 Beam-steering and beam-forming for wideband MIMO/MISO systems 76 2002
7,720,093 Modulation multiplexing 0 2002
7,095,790 Transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation 3 2003
8,218,609 Closed-loop rate control for a multi-channel communication system 6 2003
7,986,742 Pilots for MIMO communication system 13 2003
7,388,845 Multiple access wireless communications system using a multisector configuration 21 2003
7,133,354 Synchronization techniques for a wireless system 12 2003
6,985,498 Beacon signaling in a wireless system 37 2003
7,366,200 Beacon signaling in a wireless system 22 2003
7,305,055 Search-efficient MIMO trellis decoder 3 2003
7,418,042 Repetition coding for a wireless system 6 2003
8,320,301 MIMO WLAN system 3 2003
8,208,364 MIMO system with multiple spatial multiplexing modes 10 2003
8,169,944 Random access for wireless multiple-access communication systems 6 2003
8,170,513 Data detection and demodulation for wireless communication systems 9 2003
8,134,976 Channel calibration for a time division duplexed communication system 7 2003
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8,446,892 Channel structures for a quasi-orthogonal multiple-access communication system 8 2005
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7,194,040 Beam-steering and beam-forming for wideband MIMO/MISO systems 2 2005
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7,715,845 Tone hopping methods and apparatus 5 2005
8,582,548 Frequency division multiple access schemes for wireless communication 2 2006
7,636,573 Multiple-access multiple-input multiple-output (MIMO) communication system 51 2006
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8,724,555 Uplink pilot and signaling transmission in wireless communication systems 0 2006
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8,059,609 Resource allocation to support single-user and multi-user MIMO transmission 3 2007
8,290,089 Derivation and feedback of transmit steering matrix 5 2007
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7,907,689 Broadcast transmission with spatial spreading in a multi-antenna communication system 5 2007
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8,483,188 MIMO system with multiple spatial multiplexing modes 5 2008
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8,462,643 MIMO WLAN system 5 2008
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8,098,569 Signaling method in an OFDM multiple access system 15 2009
8,457,232 Detecting the number of transmit antennas in wireless communication systems 1 2009
8,767,701 Unified MIMO transmission and reception 0 2009
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7,949,060 Method and apparatus for utilizing channel state information in a wireless communication system 15 2009
8,073,072 Multiple-input multiple-output system and method 2 2009
8,194,776 Multiplexing of real time services and non-real time services for OFDM systems 1 2010
7,990,843 Signaling method in an OFDM multiple access system 21 2010
7,990,844 Signaling method in an OFDM multiple access system 20 2010
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8,542,765 Hierarchical coding with multiple antennas in a wireless communication system 1 2010
8,547,951 Channel structures for a quasi-orthogonal multiple-access communication system 0 2010
8,325,844 Data transmission with spatial spreading in a MIMO communication system 17 2010
8,644,214 Timing synchronization and channel estimation at a transition between local and wide area waveforms using a designated TDM pilot 0 2010
8,817,897 MC-CDMA multiplexing in an orthogonal uplink 0 2010
8,681,764 Frequency division multiple access schemes for wireless communication 0 2010
8,489,107 Method and apparatus for allocating downlink resources in a multiple-input multiple-output (MIMO) communication system 0 2011
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8,649,451 MC-CDMA multiplexing in an orthogonal uplink 0 2011
8,295,154 Signaling method in an OFDM multiple access system 10 2011
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8,199,634 Signaling method in an OFDM multiple access system 8 2011
8,842,619 Scalable frequency band operation in wireless communication systems 0 2011
8,599,953 Multiple-input multiple-output system and method 0 2011
8,638,870 MC-CDMA multiplexing in an orthogonal uplink 0 2011
8,711,763 Random access for wireless multiple-access communication systems 0 2012
8,320,354 Robust transmission scheme for wireless networks 2 2012
8,750,151 Channel calibration for a time division duplexed communication system 0 2012
8,520,498 Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system 1 2012
8,774,098 Method, apparatus, and system for multiplexing protocol data units 0 2012
8,824,583 Reduced complexity beam-steered MIMO OFDM system 0 2013
 
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SONY CORPORATION (6)
8,098,754 Midamble allocations for MIMO transmissions 0 2005
8,090,053 Midamble allocations for MIMO transmissions 2 2010
8,085,864 Midamble allocations for MIMO transmissions 3 2010
8,737,530 Midamble allocations for MIMO transmissions 0 2011
8,867,664 Midamble allocations for MIMO transmissions 0 2013
8,831,137 Midamble allocations for MIMO transmissions 0 2013
 
MOTOROLA MOBILITY LLC (5)
6,912,195 Frequency-domain MIMO processing method and system 19 2001
6,754,169 Method and system of operation for a variable transmission mode multi-carrier communication system 21 2001
8,249,607 Scheduling in wireless communication systems 1 2006
8,559,295 Method and apparatus for pilot signal transmission 0 2006
8,045,519 Scheduling in wireless communication systems 4 2009
 
SONY DEUTSCHLAND GMBH (5)
7,221,645 Pilot pattern design for a STTD scheme in an OFDM system 23 2001
7,664,009 Pilot pattern design for a STTD scheme in an OFDM system 3 2006
7,948,863 Pilot pattern design for a STTD scheme in an OFDM system 2 2008
8,582,417 Pilot pattern design for a STTD scheme in an OFDM system 0 2011
8,483,039 Pilot pattern design for a STTD scheme in an OFDM system 0 2011
 
AGERE SYSTEMS INC. (4)
7,099,269 Methods and apparatus for generating and utilizing training codes in a space division multiplexing communication system 2 2001
7,277,493 Equalization in orthogonal frequency domain multiplexing 7 2003
7,809,343 Multi-channel receiver with improved AGC 4 2007
7,769,357 Multi-channel receiver with improved AGC 1 2007
 
NOKIA CORPORATION (4)
7,773,685 Transmitting and receiving methods 34 2003
7,424,061 Data transfer method and system 2 2003
7,936,760 Method, communications network arrangement, communications network server, terminal, and software means for selecting and changing operating modes for packet-switched voice connection 0 2003
7,542,734 Data transmission scheme in wireless communication system 2 2005
 
TAFFCO THREE FUND, L.L.C. (4)
7,310,304 Estimating channel parameters in multi-input, multi-output (MIMO) systems 35 2002
7,088,782 Time and frequency synchronization in multi-input, multi-output (MIMO) systems 43 2002
7,889,819 Methods and systems for sampling frequency offset detection, correction and control for MIMO OFDM systems 0 2003
7,706,458 Time and frequency synchronization in Multi-Input, Multi-Output (MIMO) systems 9 2006
 
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) (4)
7,224,942 Communications system employing non-polluting pilot codes 7 2001
7,120,199 Link adaptation for MIMO transmission schemes 62 2002
8,515,435 Adaptive MIMO architecture 5 2005
8,670,497 Method and apparatus for impairment correlation estimation in a wireless communication receiver 1 2011
 
TEXAS INSTRUMENTS INCORPORATED (4)
7,929,631 Multiple space time transmit diversity communication system with selected complex conjugate inputs 0 2002
6,917,311 Orthogonal preamble encoder, method of encoding orthogonal preambles and multiple-input, multiple-output communication system employing the same 21 2003
8,811,273 Turbo HSDPA system 0 2006
7,660,229 Pilot design and channel estimation 13 2006
 
ALCATEL LUCENT (3)
8,165,246 Training sequence for low latency LMS implementation 0 2000
8,634,481 Feedback technique for wireless systems with multiple transmit and receive antennas 0 2000
8,750,266 Dual transmission for communication networks 0 2009
 
FUJITSU LIMITED (3)
7,386,058 Transceiver apparatus and transceiving method 18 2005
8,116,241 Wireless communication system and transmission device 1 2005
8,345,641 Radio communication system using multi-antenna transmission technique, and multi-user scheduler therefor 0 2008
 
LUCENT TECHNOLOGIES INC. (3)
7,230,910 Optimal channel sounding system 2 2001
7,421,039 Method and system employing antenna arrays 24 2002
7,154,960 Method of determining the capacity of each transmitter antenna in a multiple input/multiple output (MIMO) wireless system 18 2002
 
NTT DOCOMO, INC. (3)
7,646,747 Channel constructing method and base station using the method 9 2001
7,899,029 Mobile communication system, user equipment in mobile communication system, control program thereof, and synchronization establishment determination method in mobile communication system 0 2007
8,630,244 Channel structuring method and base station therewith 0 2009
 
PEGASYSTEMS INC. (3)
8,335,704 Methods and apparatus for work management and routing 3 2005
8,250,525 Proactive performance management for multi-user enterprise software systems 3 2007
8,479,157 Methods and apparatus for integration of declarative rule-based processing with procedural programming in a digital data-processing evironment 0 2009
 
RESEARCH IN MOTION LIMITED (3)
7,529,305 Combination of space-time coding and spatial multiplexing, and the use of orthogonal transformation in space-time coding 2 2000
6,980,600 Receiver system for Multiple-Transmit, Multiple-Receive (MTMR) wireless communications systems 10 2000
7,508,798 Virtual mimo communication system 8 2002
 
SHARP KABUSHIKI KAISHA (3)
7,948,960 Radio transmission device 5 2005
8,422,478 Radio transmission device 0 2010
8,416,757 Radio transmission device 0 2011
 
VIA TELECOM CO., LTD. (3)
7,180,956 Method and apparatus for applying overlaid perturbation vectors for gradient feedback transmit antenna array adaptation 13 2002
7,433,416 Method and apparatus for generating transmit adaptive antenna weights with nulling using binary gradient feedback 18 2002
7,236,538 Method and apparatus for improving transmit antenna weight tracking using channel correlations in a wireless communication system 14 2002
 
AGERE SYSTEMS LLC (2)
7,978,773 Multi-channel receiver with improved AGC 2 2006
8,391,384 Multi-channel receiver with improved AGC 0 2011
 
AT&T CORP. (2)
7,369,487 Clustered OFDM with channel estimation 2 2004
7,792,500 Rate-adaptive multiple input/multiple output (MIMO) systems 4 2008
 
CISCO TECHNOLOGY, INC. (2)
7,352,688 High data rate wireless bridging 29 2002
8,374,105 High data rate wireless bridging 1 2008
 
COMCAST CABLE COMMUNICATIONS, LLC (2)
8,451,928 Apparatus for calculating weights associated with a first signal and applying the weights to a second signal 2 2011
8,451,929 Apparatus for calculating weights associated with a received signal and applying the weights to transmit data 2 2011
 
HUGHES ELECTRONICS CORPORATION (2)
6,678,263 Method and constructions for space-time codes for PSK constellations for spatial diversity in multiple-element antenna systems 57 1999
6,898,248 System employing threaded space-time architecture for transporting symbols and receivers for multi-user detection and decoding of symbols 36 2000
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (2)
7,035,354 CDMA multi-user detection with a real symbol constellation 17 2001
7,161,975 Enhancing CDMA multiuser detection by constraining soft decisions 0 2002
 
LG ELECTRONICS INC. (2)
7,116,702 Signal processing method and apparatus in CDMA radio communication system 3 2002
7,751,352 Control signal transmitting method in multi-antenna system 4 2004
 
MITSUBISHI DENKI KABUSHIKI KAISHA (2)
7,366,249 Method for transmitting optimally interleaved data in a MIMO telecommunication system 5 2004
7,376,203 Method for transmitting uniformly distributed data in a MIMO telecommunication system 2 2005
 
NUTTER MCCLENNEN & FISH LLP (2)
8,412,720 Methods and apparatus for querying a relational data store using schema-less queries 0 2007
7,831,604 Methods and apparatus for enterprise application integration 3 2007
 
THE DIRECTV GROUP, INC. (2)
7,342,875 Space-time coded OFDM system for MMDS applications 10 2001
8,374,272 Space-time coded OFDM system for MMDS applications 0 2008
 
TQ DELTA, LLC (2)
8,634,449 Systems and methods for establishing a diagnostic transmission mode and communicating over the same 0 2011
8,743,931 Systems and methods for a transceiver to transmit or receive test information over a communication channel using multicarrier modulation 0 2013
 
UNWIRED PLANET, LLC (2)
7,209,511 Interference cancellation in a CDMA receiving system 10 2001
7,197,282 Mobile station loop-back signal processing 39 2002
 
AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH (1)
7,970,064 Transmitter, method for generating a plurality of long preambles and communication device 1 2005
 
ALCATEL-LUCENT USA INC. (1)
7,116,722 Wireless communication system using multi-element antenna having a space-time architecture 8 2001
 
AMOSMET INVESTMENTS LLC (1)
7,310,537 Communication on multiple beams between stations 2 2003
 
CIENA CORPORATION (1)
7,124,369 Multi-layer path explorer 4 2002
 
DSP GROUP INC. (1)
7,173,990 Joint equalization, soft-demapping and phase error correction in wireless system with receive diversity 14 2002
 
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE (1)
7,627,050 Adaptive transmitting and receiving device and method in wireless communication system using frequency division duplexing 3 2004
 
ERICSSON INC. (1)
6,996,380 Communication system employing transmit macro-diversity 27 2001
 
FLARLON TECHNOLOGIES, INC. (1)
7,379,446 Enhanced beacon signaling method and apparatus 5 2004
 
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V. (1)
8,031,796 Device, method and computer program for transmitting an information signal comprising several transmit signals 0 2006
 
GEORGIA TECH RESEARCH CORPORATION (1)
7,668,266 Crest factor reduction in OFDM using blind selected pilot tone modulation 1 2006
 
GIGASET COMMUNICATIONS GMBH (1)
7,688,797 Method and transmission device for transmission of data in a multi-carrier system 7 2003
 
Hollywood Engineering, Inc. (1)
7,751,368 Providing CQI feedback to a transmitter station in a closed-loop MIMO system 15 2006
 
III HOLDINGS 1, LLC (1)
7,385,617 Methods for multi-user broadband wireless channel estimation 21 2003
 
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE (1)
8,184,726 Method and apparatus for multi-rate control in a multi-channel communication system 3 2008
 
INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY (1)
7,848,296 Apparatus and method for generating channel information and apparatus and method for adaptive transmission employing the same 0 2006
 
INTELLECTUAL VENTURES HOLDING 73 LLC (1)
8,744,389 High data rate transmitter and receiver 0 2011
 
INVENTERGY, INC. (1)
8,238,226 OFDM communication apparatus 1 2009
 
KABUSHIKI KAISHA TOSHIBA (1)
8,054,899 Terminal apparatus, base station and communication method 1 2008
 
MARVELL INTERNATIONAL LTD. (1)
7,606,316 MIMO-OFDM preamble for channel estimation 4 2003
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
7,158,494 Multi-mode communications transmitter 29 2001
 
METATOMIX, INC. (1)
7,640,239 Methods and apparatus for real-time business visibility using persistent schema-less data storage 0 2005
 
MOTOROLA, INC. (1)
7,656,969 Dual payload and adaptive modulation 4 2006
 
NEC CORPORATION (1)
8,265,675 MIMO wireless communication system and method by a plurality of base stations and mobile station 2 2008
 
NOKIA MOBILE PHONES LTD. (1)
6,778,839 Method and device for transmission power selection and bit rate selection for channels with open loop power control 13 2001
 
OPTIS WIRELESS TECHNOLOGY, LLC (1)
6,754,253 Receiver architecture for transmit diversity in CDMA system 18 2000
 
PACE PLC (1)
6,968,154 Avoidance of interference between items of electrical apparatus 0 2002
 
PANTECH CO., LTD. (1)
8,787,216 Apparatus and method for allocating channel state information-reference signal in wireless communication system 0 2011
 
PULSE-LING, INC. (1)
8,045,935 High data rate transmitter and receiver 5 2005
 
RAMOT AT TEL-AVIV UNIVERSITY LTD. (1)
7,630,349 Antenna division multiple access 3 2005
 
REGENTS OF THE UNIVERSITY OF MINNESOTA (1)
7,224,744 Space-time multipath coding schemes for wireless communication systems 10 2003
 
RIM SEMICONDUCTOR COMPANY (1)
7,280,469 Efficient implementation of large size FFT 0 2001
 
SONY MOBILE COMMUNICATIONS AB (1)
6,996,375 Transmit diversity and separating multiple loopback signals 19 2003
 
UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC. (1)
7,110,350 Wireless LAN compatible multi-input multi-output system 26 2004
 
VOCALCOMM GROUP, LLC (1)
7,782,981 Signal processing apparatus and method 1 2004
 
Other [Check patent profile for assignment information] (2)
8,873,365 Transmit diversity processing for a multi-antenna communication system 0 2009
RE45203 Apparatus and method for transmitting/receiving data in a mobile communication system using multiple antennas 0 2013