公开(公告)号：AU2003287291C1

公开(公告)日：2010-06-03

申请号：AU2003287291

申请日：2003-10-24

Applicant: QUALCOMM INC

Inventor： WALLACE MARK S ,  KETCHUM JOHN W ,  WALTON J RODNEY ,  HOWARD STEVEN J

IPC: H04L12/28 ,  H04B7/005 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04J99/00 ,  H04L1/00 ,  H04L1/06 ,  H04L1/08 ,  H04L1/16 ,  H04L1/18 ,  H04L12/56 ,  H04L25/02 ,  H04L25/03 ,  H04L27/00 ,  H04L27/26 ,  H04W28/06 ,  H04W28/20 ,  H04W28/22 ,  H04W52/00 ,  H04W52/42 ,  H04W52/50 ,  H04W72/04 ,  H04W72/12 ,  H04W74/00 ,  H04W74/08 ,  H04W84/12

Abstract: A multiple-access MIMO WLAN system that employs MIMO, OFDM, and TDD. The system (1) uses a channel structure with a number of configurable transport channels, (2) supports multiple rates and transmission modes, which are configurable based on channel conditions and user terminal capabilities, (3) employs a pilot structure with several types of pilot (e.g., beacon, MIMO, steered reference, and carrier pilots) for different functions, (4) implements rate, timing, and power control loops for proper system operation, and (5) employs random access for system access by the user terminals, fast acknowledgement, and quick resource assignments. Calibration may be performed to account for differences in the frequency responses of transmit/receive chains at the access point and user terminals. The spatial processing may then be simplified by taking advantage of the reciprocal nature of the downlink and uplink and the calibration.

公开(公告)号：ES2339242T3

公开(公告)日：2010-05-18

申请号：ES03781524

申请日：2003-10-24

Applicant: QUALCOMM INC

Inventor： WALTON J RODNEY ,  WALLACE MARK S ,  KETCHUM JOHN W ,  HOWARD STEVEN J

IPC: H04W16/28 ,  H04B7/005 ,  H04B7/06 ,  H04B7/08 ,  H04J99/00 ,  H04L1/00 ,  H04L1/06 ,  H04L1/08 ,  H04L1/16 ,  H04L1/18 ,  H04L12/28 ,  H04L12/56 ,  H04L25/02 ,  H04L25/03 ,  H04L27/00 ,  H04L27/26 ,  H04W28/06 ,  H04W28/20 ,  H04W28/22 ,  H04W52/00 ,  H04W52/42 ,  H04W52/50 ,  H04W72/04 ,  H04W72/12 ,  H04W74/00 ,  H04W74/08 ,  H04W84/12

Abstract: Un procedimiento de transmitir pilotos en un sistema de comunicación inalámbrica de múltiples entradas y múltiples salidas (MIMO), caracterizado por: transmitir un piloto de MIMO desde una pluralidad de antenas (724, 752) de una primera entidad (110, 120) de comunicación y por un primer enlace de comunicación, en donde el piloto de MIMO comprende una pluralidad de transmisiones piloto enviadas desde la pluralidad de antenas (724, 752), y donde la transmisión piloto desde cada antena (724, 752) es identificable por una segunda entidad (110, 120) de comunicación que recibe el piloto de MIMO; y recibir en la primera entidad (110, 120) de comunicación un piloto guiado mediante al menos una automodalidad de un segundo enlace de comunicación, desde la segunda entidad (110, 120) de comunicación, en donde el piloto guiado se genera sobre la base del piloto de MIMO.

公开(公告)号：UA89611C2

公开(公告)日：2010-02-25

申请号：UA2005004858

申请日：2003-10-24

Applicant: QUALCOMM INC

Inventor： WALTON J RODNEY ,  WALLACE MARK S ,  KETCHUM JOHN W ,  HOWARD STEPHAN J

IPC: H04L12/28 ,  H04L1/00 ,  H04L1/06

公开(公告)号：AT449470T

公开(公告)日：2009-12-15

申请号：AT05019630

申请日：2003-10-24

Applicant: QUALCOMM INC

Inventor： WALTON RODNEY J ,  WALLACE MARK S ,  KETCHUM JOHN W ,  HOWARD STEVEN J

IPC: H04B7/02 ,  H04B7/005 ,  H04B7/06 ,  H04B7/08 ,  H04J99/00 ,  H04L1/00 ,  H04L1/06 ,  H04L1/08 ,  H04L1/16 ,  H04L1/18 ,  H04L12/28 ,  H04L12/56 ,  H04L25/02 ,  H04L25/03 ,  H04L27/00 ,  H04L27/26 ,  H04W28/06 ,  H04W28/20 ,  H04W28/22 ,  H04W52/00 ,  H04W52/42 ,  H04W52/50 ,  H04W72/04 ,  H04W72/12 ,  H04W74/00 ,  H04W74/08 ,  H04W84/12

Abstract: A multiple-access MIMO WLAN system that employs MIMO, OFDM, and TDD. The system (1) uses a channel structure with a number of configurable transport channels, (2) supports multiple rates and transmission modes, which are configurable based on channel conditions and user terminal capabilities, (3) employs a pilot structure with several types of pilot (e.g., beacon, MIMO, steered reference, and carrier pilots) for different functions, (4) implements rate, timing, and power control loops for proper system operation, and (5) employs random access for system access by the user terminals, fast acknowledgement, and quick resource assignments. Calibration may be performed to account for differences in the frequency responses of transmit/receive chains at the access point and user terminals. The spatial processing may then be simplified by taking advantage of the reciprocal nature of the downlink and uplink and the calibration.

公开(公告)号：AU2009227852A1

公开(公告)日：2009-11-05

申请号：AU2009227852

申请日：2009-10-19

Applicant: QUALCOMM INC

Inventor： WALLACE MARK S ,  HOWARD STEVEN J ,  KETCHUM JOHN W ,  WALTON JAY RODNEY

IPC: H04L12/28 ,  H04B7/005 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04J99/00 ,  H04L1/00 ,  H04L1/06 ,  H04L1/08 ,  H04L1/16 ,  H04L1/18 ,  H04L12/56 ,  H04L25/02 ,  H04L25/03 ,  H04L27/00 ,  H04L27/26 ,  H04W28/06 ,  H04W28/20 ,  H04W28/22 ,  H04W52/00 ,  H04W52/42 ,  H04W52/50 ,  H04W72/04 ,  H04W72/12 ,  H04W74/00 ,  H04W74/08 ,  H04W84/12

Abstract: A multiple-access MIMO WLAN system that employs MIMO, OFDM, and TDD. The system (1) uses a channel structure with a number of configurable transport channels, (2) supports multiple rates and transmission modes, which are configurable based on channel conditions and user terminal capabilities, (3) employs a pilot structure with several types of pilot (e.g., beacon, MIMO, steered reference, and carrier pilots) for different functions, (4) implements rate, timing, and power control loops for proper system operation, and (5) employs random access for system access by the user terminals, fast acknowledgement, and quick resource assignments. Calibration may be performed to account for differences in the frequency responses of transmit/receive chains at the access point and user terminals. The spatial processing may then be simplified by taking advantage of the reciprocal nature of the downlink and uplink and the calibration.

公开(公告)号：AU2009213093A1

公开(公告)日：2009-10-08

申请号：AU2009213093

申请日：2009-09-11

Applicant: QUALCOMM INC

Inventor： KETCHUM JOHN W ,  WALTON JAY RODNEY

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

公开(公告)号：UA87969C2

公开(公告)日：2009-09-10

申请号：UA2005002757

申请日：2003-08-19

Applicant: QUALCOMM INC

Inventor： MENON MURALI PARAVAT ,  KETCHUM JOHN W ,  WALLACE MARK ,  WALTON JAY ROD ,  HOWARD STEPHAN J

IPC: H04B7/06 ,  H04J99/00 ,  H01Q3/26 ,  H04B7/005 ,  H04B7/04 ,  H04J11/00 ,  H04L27/26

公开(公告)号：HK1125758A1

公开(公告)日：2009-08-14

申请号：HK09100970

申请日：2009-02-03

Applicant: QUALCOMM INC

Inventor： WALTON J RODNEY ,  WALLACE MARK S ,  KETCHUM JOHN W ,  HOWARD STEVEN J

IPC: H04B7/005 ,  H04B7/06 ,  H04B7/08 ,  H04J99/00 ,  H04L20060101 ,  H04L1/00 ,  H04L1/06 ,  H04L1/08 ,  H04L1/16 ,  H04L1/18 ,  H04L12/28 ,  H04L12/56 ,  H04L25/02 ,  H04L25/03 ,  H04L27/00 ,  H04L27/26 ,  H04W28/06 ,  H04W28/20 ,  H04W28/22 ,  H04W52/00 ,  H04W52/42 ,  H04W52/50 ,  H04W72/04 ,  H04W72/12 ,  H04W74/00 ,  H04W74/08 ,  H04W84/12

Abstract: A multiple-access MIMO WLAN system that employs MIMO, OFDM, and TDD. The system (1) uses a channel structure with a number of configurable transport channels, (2) supports multiple rates and transmission modes, which are configurable based on channel conditions and user terminal capabilities, (3) employs a pilot structure with several types of pilot (e.g., beacon, MIMO, steered reference, and carrier pilots) for different functions, (4) implements rate, timing, and power control loops for proper system operation, and (5) employs random access for system access by the user terminals, fast acknowledgement, and quick resource assignments. Calibration may be performed to account for differences in the frequency responses of transmit/receive chains at the access point and user terminals. The spatial processing may then be simplified by taking advantage of the reciprocal nature of the downlink and uplink and the calibration.

公开(公告)号：DE602004013462T2

公开(公告)日：2009-07-16

申请号：DE602004013462

申请日：2004-12-13

Applicant: QUALCOMM INC

Inventor： WALTON JAY RODNEY ,  KETCHUM JOHN W ,  WALLACE MARK S ,  HOWARD STEVEN J

IPC: H04J99/00 ,  H04L25/03 ,  H04B7/005 ,  H04B7/02 ,  H04B7/04 ,  H04B7/06 ,  H04B7/12 ,  H04L1/02

Abstract: An access point in a multi-antenna system broadcasts data using spatial spreading to randomize an 'effective' channel observed by each user terminal for each block of data symbols broadcast by the access point. At the access point, data is coded, interleaved, and modulated to obtain N D data symbol blocks to be broadcast in N M transmission spans, where N D ‰¥1 and N M >1. The N D data symbol blocks are partitioned into N M data symbol subblocks, one subblock for each transmission span. A steering matrix is selected (e.g., in a deterministic or pseudo-random manner from among a set of L steering matrices) for each subblock. Each data symbol subblock is spatially processed with the steering matrix selected for that subblock to obtain transmit symbols, which are further processed and broadcast via N T transmit antennas and in one transmission span to user terminals within a broadcast coverage area.

公开(公告)号：UA86927C2

公开(公告)日：2009-06-10

申请号：UA2005000569

申请日：2003-06-20

Applicant: QUALCOMM INC

Inventor： WALTON JAY R ,  KETCHUM JOHN W

IPC: H04B7/04 ,  H04J11/00 ,  H04B1/00 ,  H04B7/02 ,  H04B7/06 ,  H04B7/12 ,  H04B7/26 ,  H04J99/00 ,  H04L1/00 ,  H04L1/02 ,  H04L1/06 ,  H04L27/26

Abstract: Визобретениираскрытыспособыпередачиданныхс использованиемрежимовпередачис разнесением, дляповышениянадежности. Впередатчикедлякаждогоодногоилиболеепотоковданныхвыбираютконкретныйрежимпередачис разнесениемдляиспользованияизнесколькихвозможныхрежимовпередачи. Этирежимыпередачимогутвключатьв себярежимпередачис разнесениемпочастоте, режимпередачис разнесениемУолшаи режимпередачис пространственновременнымразнесениемпередачи (ПЧРП). Каждыйрежимпередачис разнесениемпередаетданныес избыточностьювовремени, почастоте, впространствеилиихкомбинации. Каждыйпотокданныхкодируюти модулируют, чтобыпредоставитьсимволымод�