Random access for wireless multiple-access communication systems

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO

8711763

APP PUB NO

20120140664A1

SERIAL NO

13353924

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Techniques for facilitating random access in wireless multiple-access communication systems are described. A random access channel (RACH) is defined to comprise a “fast” RACH (F-RACH) and a “slow” RACH (S-RACH). The F-RACH and S-RACH can efficiently support user terminals in different operating states and employ different designs. The F-RACH can be used to quickly access the system, and the S-RACH is more robust and can support user terminals in various operating states and conditions. The F-RACH may be used by user terminals that have registered with the system and can compensate for their round trip delays (RTDs) by properly advancing their transmit timing. The S-RACH may be used by user terminals that may or may not have registered with the system, and may or may not be able to compensate for their RTDs. Other aspects, embodiments, and features are also claimed and described.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
QUALCOMM INCORPORATEDSAN DIEGO, CA19041

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Howard, Steven J Ashland, US 122 7524
Ketchum, John W Harvard, US 142 9372
Wallace, Mark S Bedford, US 124 5549
Walton, Jay Rodney Carlisle, US 102 3771

Cited Art Landscape

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2003/0153,320 System and method for providing contention channel organization for broadband satellite access in a communications network 9 2002
 
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7042858 Soft handoff for OFDM 110 2002
 
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6574211 Method and apparatus for high rate packet data transmission 508 1997
6631121 Method and apparatus for managing overhead channel in mobile communication system 33 1998
6385264 Method and apparatus for mitigating interference between base stations in a wideband CDMA system 105 1999
6426971 System and method for accurately predicting signal to interference and noise ratio to improve communications system performance 67 1999
6330462 Method and apparatus for pre-transmission power control using lower rate for high rate communication 82 1999
2002/0154,705 High efficiency high performance communications system employing multi-carrier modulation 255 2000
6473467 Method and apparatus for measuring reporting channel state information in a high efficiency, high performance communications system 589 2000
6760313 Method and apparatus for adaptive rate selection in a communication system 55 2000
6952454 Multiplexing of real time services and non-real time services for OFDM systems 166 2000
6731668 Method and system for increased bandwidth efficiency in multiple input--multiple output channels 55 2001
2002/0098,872 Method and system for forward link beam forming in wireless communications 22 2001
6771706 Method and apparatus for utilizing channel state information in a wireless communication system 205 2001
6785341 Method and apparatus for processing data in a multiple-input multiple-output (MIMO) communication system utilizing channel state information 265 2001
2003/0048,856 Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion 72 2001
2002/0193,146 Method and apparatus for antenna diversity in a wireless communication system 239 2001
7072413 Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion 154 2001
2003/0112,880 Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion 48 2001
2003/0002,450 Method and apparatus for transmitting data in a time division duplexed (TDD) communication system 40 2001
6751187 Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel transmission 191 2001
2003/0043,732 Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel transmission 96 2001
7006848 Method and apparatus for utilizing channel state information in a wireless communication system 130 2001
2003/0003,880 Method and apparatus for utilizing channel state information in a wireless communication system 54 2001
7190749 Method and apparatus for canceling pilot interference in a wireless communication system 44 2001
7164649 Adaptive rate control for OFDM communication system 130 2001
2003/0125,040 Multiple-access multiple-input multiple-output (MIMO) communication system 418 2001
2003/0103,584 Iterative detection and decoding for a MIMO-OFDM system 49 2001
6760388 Time-domain transmit and receive processing with channel eigen-mode decomposition for MIMO systems 152 2001
2003/0108,117 Time-domain transmit and receive processing with channel eigen-mode decompositon for MIMO systems 35 2001
7020110 Resource allocation for MIMO-OFDM communication systems 225 2002
2003/0128,658 Resource allocation for MIMO-OFDM communication systems 115 2002
7020482 Reallocation of excess power for full channel-state information (CSI) multiple-input, multiple-output (MIMO) systems 44 2002
2003/0139,196 Reallocation of excess power for full channel-state information (CSI) multiple-input, multiple-output (MIMO) systems 25 2002
2003/0153,360 Method and apparatus for transmit pre-correction in wireless communications 53 2002
2003/0157,954 Power control for partial channel-state information (CSI) multiple-input, multiple-output (MIMO) systems 36 2002
6862271 Multiple-input, multiple-output (MIMO) systems with multiple transmission modes 164 2002
2003/0161,282 Multiple-input, multiple-output (MIMO) systems with multiple transmission modes 60 2002
6636568 Data transmission with non-uniform distribution of data rates for a multiple-input multiple-output (MIMO) system 151 2002
2003/0165,189 DATA TRANSMISSION WITH NON-UNIFORM DISTRIBUTION OF DATA RATES FOR A MULTIPLE-INPUT MULTIPLE-OUTPUT (MIMO) SYSTEM 51 2002
7197084 Precoding for a multipath channel in a MIMO system 75 2002
2003/0185,310 Precoding for a multipath channel in a MIMO system 68 2002
7623871 Position determination for a wireless terminal in a hybrid position determination system 57 2002
2004/0203,853 Position determination for a wireless terminal in a hybrid position determination system 63 2002
7184713 Rate control for multi-channel communication systems 96 2002
2003/0236,080 Rate control for multi-channel communication systems 47 2002
7095709 Diversity transmission modes for MIMO OFDM communication systems 131 2002
2003/0235,147 Diversity transmission modes for MIMO OFDM communication systems 77 2002
2003/0235,255 Signal processing with channel eigenmode decomposition and channel inversion for MIMO systems 127 2002
6940917 Beam-steering and beam-forming for wideband MIMO/MISO systems 103 2002
2004/0042,439 Beam-steering and beam-forming for wideband MIMO/MISO systems 26 2002
2004/0042,556 Coded MIMO systems with selective channel inversion applied per eigenmode 69 2002
7280467 Pilot transmission schemes for wireless multi-carrier communication systems 145 2003
2004/0081,131 OFDM communication system with multiple OFDM symbol sizes 163 2003
2004/0184,398 Transmission mode selection for data transmission in a multi-channel communication system 80 2003
6804191 Phase sequences for timing and access signals 49 2003
2004/0120,411 Closed-loop rate control for a multi-channel communication system 193 2003
7986742 Pilots for MIMO communication system 42 2003
2004/0179,627 Pilots for MIMO communication systems 141 2003
2005/0047,515 Frequency-independent spatial processing for wideband MISO and MIMO systems 46 2003
7002900 Transmit diversity processing for a multi-antenna communication system 143 2003
7151809 Channel estimation and spatial processing for TDD MIMO systems 65 2003
7324429 Multi-mode terminal in a wireless MIMO system 70 2003
8170513 Data detection and demodulation for wireless communication systems 18 2003
2004/0082,356 MIMO WLAN system 465 2003
2004/0085,939 Channel calibration for a time division duplexed communication system 68 2003
2004/0087,324 Channel estimation and spatial processing for TDD MIMO systems 20 2003
2004/0136,349 MIMO system with multiple spatial multiplexing modes 176 2003
2004/0156,328 Random access for wireless multiple-access communication systems 105 2003
7298805 Multi-antenna transmission for spatial division multiple access 69 2003
2005/0111,599 Multi-antenna transmission for spatial division multiple access 46 2003
2005/0120,097 Method and apparatus for providing an efficient control channel structure in a wireless communication system 103 2003
7280625 Derivation of eigenvectors for spatial processing in MIMO communication systems 48 2003
2004/0165,684 Derivation of eigenvectors for spatial processing in MIMO communication systems 16 2003
7508748 Rate selection for a multi-carrier MIMO system 78 2004
2005/0088,959 Rate selection for a multi-carrier MIMO system 55 2004
7206354 Calibration of downlink and uplink channel responses in a wireless MIMO communication system 49 2004
7486740 Calibration of transmit and receive chains in a MIMO communication system 26 2004
2005/0227,628 Calibration of transmit and receive chains in a MIMO communication system 37 2004
7110463 Efficient computation of spatial filter matrices for steering transmit diversity in a MIMO communication system 62 2004
2006/0002,496 Efficient computation of spatial filter matrices for steering transmit diversity in a MIMO communication system 3 2004
2005/0208,959 Dynamic shared forward link channel for a wireless communication system 44 2004
7054378 Method and apparatus for processing data in a multiple-input multiple-output (MIMO) communication system utilizing channel state information 42 2004
2005/0135,284 High speed media access control 176 2004
2005/0135,295 High speed media access control and direct link protocol 151 2004
2005/0135,318 High speed media access control with legacy system interoperability 225 2004
8570988 Channel calibration for a time division duplexed communication system 16 2005
7221956 Power control for partial channel-state information (CSI) multiple-input, multiple-output (MIMO) systems 30 2005
7466749 Rate selection with margin sharing 21 2005
7603141 Multi-antenna station with distributed antennas 46 2005
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2006/0104,340 Open-loop rate control for a TDD communication system 38 2005
8358714 Coding and modulation for multiple data streams in a communication system 14 2005
2006/0039,275 Transmit diversity processing for a multi-antenna communication system 35 2005
2006/0114,858 Closed-loop rate control for a MIMO communication system 100 2005
7636573 Multiple-access multiple-input multiple-output (MIMO) communication system 84 2006
7653142 Channel estimation and spatial processing for TDD MIMO systems 39 2006
2007/0086,536 CHANNEL ESTIMATION AND SPATIAL PROCESSING FOR TDD MIMO SYSTEMS 19 2006
8145179 Data detection and demodulation for wireless communication systems 18 2007
2008/0069,015 MULTI-MODE TERMINAL IN A WIRELESS MIMO SYSTEM 34 2007
2008/0285,488 MIMO WLAN SYSTEM 57 2008
2008/0285,669 MIMO WLAN SYSTEM 50 2008
2008/0267,098 MIMO SYSTEM WITH MULTIPLE SPATIAL MULTIPLEXING MODES 28 2008
2008/0267,138 MIMO SYSTEM WITH MULTIPLE SPATIAL MULTIPLEXING MODES 40 2008
2008/0285,670 MIMO WLAN SYSTEM 101 2008
2010/0067,401 METHODS AND SYSTEMS FOR TRANSMISSION MODE SELECTION IN A MULTI CHANNEL COMMUNICATION SYSTEM 46 2008
2009/0129,454 RATE SELECTION WITH MARGIN SHARING 15 2008
2010/0183,088 CALIBRATION OF TRANSMIT AND RECEIVE CHAINS IN A MIMO COMMUNICATION SYSTEM 31 2008
2010/0208,841 TRANSMIT DIVERSITY PROCESSING FOR A MULTI-ANTENNA COMMUNICATION SYSTEM 18 2009
2010/0119,001 MIMO SYSTEM WITH MULTIPLE SPATIAL MULTIPLEXING MODES 38 2009
2010/0260,060 INTEGRATED CALIBRATION PROTOCOL FOR WIRELESS LANS 37 2010
2011/0235,744 PILOTS FOR MIMO COMMUNICATION SYSTEMS 25 2011
2012/0176,928 CHANNEL CALIBRATION FOR A TIME DIVISION DUPLEXED COMMUNICATION SYSTEM 16 2012
2013/0235,825 MIMO SYSTEM WITH MULTIPLE SPATIAL MULTIPLEXING MODES 14 2013
2013/0279,614 OFDM COMMUNICATION SYSTEM WITH MULTIPLE OFDM SYMBOL SIZES 16 2013
 
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* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
QUALCOMM INCORPORATED (2)
9240871 MIMO WLAN system 1 2008
9013974 MIMO WLAN system 4 2014
* Cited By Examiner

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