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公开(公告)号:ES2357849T3
公开(公告)日:2011-05-03
申请号:ES05824377
申请日:2005-11-15
Applicant: QUALCOMM INC
Inventor: WALTON J RODNEY , SURINENI SHRAVAN K , MEYLAN ARNAUD , NANDA SANJIV
IPC: H04B17/309 , H04L1/00
Abstract: Un procedimiento para realizar una selección de velocidad, que comprende: estimar (114) la calidad de canal de un primer enlace de comunicaciones en función de una transmisión recibida a través del primer enlace de comunicaciones; estimar (116) la calidad de canal de un segundo enlace de comunicaciones en función de la calidad de canal estimada del primer enlace de comunicaciones y de un parámetro asimétrico indicativo de una diferencia en las calidades de canal del primer y del segundo enlace de comunicaciones, donde la diferencia en las calidades de canal es la diferencia entre una SNR para el primer enlace de comunicaciones y una SNR para el segundo enlace de comunicaciones; y seleccionar (118) al menos una velocidad para una transmisión de datos a través del segundo enlace de comunicaciones en función de la calidad de canal estimada del segundo enlace de comunicaciones.
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公开(公告)号:AU2005295215B2
公开(公告)日:2010-06-03
申请号:AU2005295215
申请日:2005-10-20
Applicant: QUALCOMM INC
Inventor: WALTON J RODNEY , NANDA SANJIV , SURINENI SHRAVAN K
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93.
公开(公告)号:NZ565722A
公开(公告)日:2009-07-31
申请号:NZ56572204
申请日:2004-11-15
Applicant: QUALCOMM INC
Inventor: WALTON J RODNEY , KETCHUM JOHN W
IPC: H04B7/06 , H04B7/26 , H04L1/00 , H04L1/06 , H04L1/16 , H04L12/28 , H04L12/56 , H04L25/02 , H04L27/26 , H04W28/18 , H04W36/00 , H04W72/14 , H04B7/08 , H04L1/22 , H04Q7/38
Abstract: A method for processing information in a communication system is provided. The method includes partitioning a control channel used for transmitting control information into a number of subchannels operated according to different coding schemes; selecting one of the control subchannels to be used for transmitting control information from a base station to a respective mobile station; and transmitting control information from the base station to a particular mobile station on a particular subchannel selected for the respective mobile station.
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公开(公告)号:HK1121899A1
公开(公告)日:2009-04-30
申请号:HK09100872
申请日:2006-04-10
Applicant: QUALCOMM INC
Inventor: WALTON J RODNEY , KETCHUM JOHN W , WALLACE MARK , HOWARD STEVEN J
IPC: H04W20090101 , H04B7/005 , H04B7/04 , H04B7/06 , H04B7/08 , H04J99/00 , H04L1/00 , H04L1/06 , H04L1/08 , H04L1/16 , H04L12/28 , H04L12/56 , H04L25/02 , H04L25/03 , H04L27/26 , H04W28/20 , H04W52/50 , H04W74/08
Abstract: Techniques for facilitating random access in wireless multiple-access communication systems. 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. The user terminals may use the F-RACH or S-RACH, or both, to gain access to the system.
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公开(公告)号:SG150537A1
公开(公告)日:2009-03-30
申请号:SG2009012121
申请日:2004-11-12
Applicant: QUALCOMM INC
Inventor: WALTON J RODNEY , KETCHUM JOHN W , SMEE JOHN EDWARD , WALLACE MARK S , HOWARD STEVEN J
Abstract: MULTI-ANTENNA TRANSMISSION FOR SPATIAL DIVISION MULTIPLE ACCESS An uplink channel response matrix is obtained for each terminal and decomposed to obtain a steering vector used by the terminal to transmit on the uplink. An 'effective' uplink channel response vector is formed for each terminal based on its steering vector and its channel response matrix. Multiple sets of terminals are evaluated based on their effective channel response vectors to determine the best set (e.g., with highest overall throughput) for uplink transmission. Each selected terminal performs spatial processing on its data symbol stream with its steering vector and transmits its spatially processed data symbol stream to an access point. The multiple selected terminals simultaneously transmit their data symbol streams via their respective MIMO channels to the access point. The access point performs receiver spatial processing on its received symbol streams in accordance with a receiver spatial processing technique to recover the data symbol streams transmitted by the selected terminals.
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公开(公告)号:UA85830C2
公开(公告)日:2009-03-10
申请号:UAA200504942
申请日:2003-10-24
Applicant: QUALCOMM INC
Inventor: KETCHUM JOHN W , WALLACE MARK , WALTON J RODNEY , HOWARD STEPHAN J
IPC: H04B7/005 , H04B7/04 , H04B7/06 , H04B7/08 , H04J99/00 , H04L1/00 , H04L1/06 , H04L1/08 , H04L1/16 , H04L12/28 , H04L12/56 , H04L25/02 , H04L25/03 , H04L27/26 , H04W16/28 , H04W52/50
Abstract: Оцінкаканалутапростороваобробкадля TDD МІМОсистеми. Калібруванняможебутивиконанез метоюскладаннявідмінностіу відповідяхланцюгівприйому/передачів точцідоступуі терміналікористувача (512). Протягомнормальноїопераціїпілот-сигналМІМОпередаєтьсянапершулінію (522) зв'язкуі використовуєтьсяз метоюодержанняоцінкивідповідіканалупершоїлініїзв'язку (524), якарозкладенадляодержаннядіагональноїматрицісингулярнихзначеньі першоїунітарноїматриці, якаміститьі лівівласнівекторипершоїлініїзв'язку, іправівласнівекторидругоїлініїзв'язку (526). Регульованийопорнийсигнал (посилання) передаєтьсяподругійлініїзв'язку, використовуючивласнівекторив першійунітарнійматриці (530), іобробляєтьсядляодержаннядіагональноїматриціі другоїунітарноїматриці, якаміститьі лівівласнівекторидругоїлініїзв'язку, іправівласнівекторипершоїлініїзв'язку (532). Кожнаунітарнаматрицяможебутивикористанадлявиконанняпросторовоїобробкидляприйому/передачіданихнаобохлініяхзв'язку (540, 542, 550, 552).
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公开(公告)号:DE05815502T1
公开(公告)日:2008-05-21
申请号:DE05815502
申请日:2005-10-20
Applicant: QUALCOMM INC
Inventor: NANDA SANJIV , SURINENI SHRAVAN K , WALTON J RODNEY
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98.
公开(公告)号:NZ547514A
公开(公告)日:2008-03-28
申请号:NZ54751404
申请日:2004-11-15
Applicant: QUALCOMM INC
Inventor: WALTON J RODNEY , KETCHUM JOHN W
IPC: H04B7/06 , H04B7/26 , H04L1/00 , H04L1/06 , H04L1/16 , H04L12/28 , H04L12/56 , H04L25/02 , H04L27/26 , H04W28/18 , H04W36/00 , H04W72/14 , H04B7/08 , H04L1/22 , H04Q7/38
Abstract: A method for processing information in a communication system is disclosed. The method includes the steps of (a) partitioning a control channel used for transmitting control information into a plurality of subchannels where each subchannel is operated at a specific date rate, (b) selecting, for each one or more user terminals, one of the subchannels to be used for transmitting control information from an access point to the respective user terminal, based on one or more selection criteria, and (c) transmitting control information from the access point to a particular user terminal on a particular subchannel selected for the respective user channel.
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公开(公告)号:HK1096219A1
公开(公告)日:2007-05-25
申请号:HK07103044
申请日:2007-03-21
Applicant: QUALCOMM INC
Inventor: KETCHUM JOHN W , WALTON J RODNEY , NANDA SANJIV
IPC: H04L20060101 , H04L12/28 , H04L12/56 , H04L29/06
Abstract: Embodiments addressing MAC processing for efficient use of high throughput systems are disclosed. In one aspect, a protocol stack is disclosed comprising one or more of the following: an adaptation layer, a data link control layer, a physical layer, and a layer manager. In another aspect, physical layer feedback is used for adaptation layer processing. In one embodiment, physical layer feedback is used for segmentation. In another embodiment, physical layer feedback is used for multicast mapping onto one or more unicast channels. In another aspect, a data unit for transmission from a first station to a second station comprises zero or more complete sub-data units, zero or one partial sub-data units from a prior transmission, and zero or one partial sub-data units to fill the data unit. In one embodiment, a pointer may be used to indicate the location of any complete sub-data units.
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公开(公告)号:BRPI0416781A
公开(公告)日:2007-03-06
申请号:BRPI0416781
申请日:2004-11-12
Applicant: QUALCOMM INC
Inventor: WALTON J RODNEY , KETCHUM JOHN W , SMEE JOHN EDWARD , WALLACE MARK S , HOWARD STEVEN J
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