公开(公告)号：BR0313837A

公开(公告)日：2005-06-21

申请号：BR0313837

申请日：2003-08-29

Applicant: QUALCOMM INC

Inventor： SENDONARIS ANDREW ,  SHIU DA-SHAN ,  PATTERSON DAVID M ,  SUBRAHMANYA PARVATHANATHAN ,  TERASAWA DAISUKE

IPC: H04J13/00 ,  H04Q7/38 ,  H04B1/707

Abstract: A method and apparatus for using information about a mobile terminal's location relative to a base station can improve performance of a communication system. In addition, information about the mobile terminal's velocity relative to the base station may be used to improve performance of the communication system. The location information may be used to estimate a nominal PN offset, and a set of PN offset to use, for processing communication signals. The velocity information may be used to estimate a nominal frequency of the communication signals.

公开(公告)号：AU2003263018A1

公开(公告)日：2004-03-19

申请号：AU2003263018

申请日：2003-08-29

Applicant: QUALCOMM INC

Inventor： SENDONARIS ANDREW ,  SHIU DA-SHAN ,  PATTERSON DAVID M ,  SUBRAHMANYA PARVATHANATHAN ,  TERASAWA DAISUKE

IPC: H04J13/00 ,  H04Q7/38 ,  H04B1/00

Abstract: A method and apparatus for using information about a mobile terminal's location relative to a base station can improve performance of a communication system. In addition, information about the mobile terminal's velocity relative to the base station may be used to improve performance of the communication system. The location information may be used to estimate a nominal PN offset, and a set of PN offset to use, for processing communication signals. The velocity information may be used to estimate a nominal frequency of the communication signals.

公开(公告)号：HK1040014A1

公开(公告)日：2002-05-17

申请号：HK02101229

申请日：2002-02-20

Applicant: QUALCOMM INC

Inventor： HOLTZMAN JACK ,  TERASAWA DAISUKE ,  RAZOUMOV LEONID

IPC: H04B1/707 ,  H04B1/7103 ,  H04B7/005 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04J13/12 ,  H04L25/03 ,  H04L27/26 ,  H04W52/04 ,  H04B ,  H04J

Abstract: The invention provides a method and apparatus for reducing transmission signal power or interference of transmitted communication signals suitable for use in a communication system having a base station and a plurality of user stations that exchange communication signals with the base station. An input node receives channel data for transmission on a plurality of channels to the plurality of user stations, wherein the channel data includes pilot symbol data. A processor determines symbol positions in which each of the plurality of user stations expect to find pilot symbols. A transmitter transmits to the plurality of user stations pilot symbols only in symbol positions that the plurality of user stations expect to find pilot symbols, and failing to transmit pilot symbols in other symbol positions.

公开(公告)号：AU8850701A

公开(公告)日：2002-03-22

申请号：AU8850701

申请日：2001-08-28

Applicant: QUALCOMM INC

Inventor： SHIU DA-SHAN ,  AGRAWAL AVNEESH ,  TERASAWA DAISUKE

IPC: H03M13/27 ,  H04B1/707

Abstract: A receiver unit for use in a CDMA system and including a channel processor, a buffer, and a data processor. The channel processor processes samples for one or more physical channels for each time interval to provide symbols. The buffer is operated as a number of memory banks. Each memory bank is associated with a respective time interval and stores symbols associated with that time interval. The data processor retrieves symbols for a particular "traffic" from one or more memory banks and processes the retrieved symbols. For the W-CDMA system, each traffic includes one or more radio frames for a particular transmission time interval. The receiver unit typically further includes a controller that directs the storage and retrieval of symbols to and from the memory banks and a decoder that decodes symbols processed by the data processor. For each time interval, radio frames for physical channels received starting within that time interval can be stored to permutated locations of designated sections of the memory bank. Radio frames associated with a particular CCTrCH can be stored to contiguous sections of the memory bank. Symbols for a particular traffic can be retrieved from one or more memory banks in permutated order.

公开(公告)号：AU8710701A

公开(公告)日：2002-03-22

申请号：AU8710701

申请日：2001-09-05

Applicant: QUALCOMM INC

Inventor： AGRAWAL AVNEESH ,  TERASAWA DAISUKE

IPC: H04J13/20 ,  H04B1/7117 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04Q7/38

Abstract: Techniques for recovering data transmitted on a physical channel in which the channelization code is not known at the time of the data recovery. A modulated signal is received an processed to provide received samples. A hypothesized channelization code (e.g., an OVSF code in the W-CDMA system) is selected and used to process the received samples to generate partially processed symbols. The hypothesized channelization code is a "base" code that can be used to generate all possible channelization codes that may have been used for the physical channel. Intermediate results representative of the partially processed symbols are stored and, upon determination of the actual channelization code, further processed in accordance with the actual and hypothesized channelization codes to provide the final results.

公开(公告)号：AU4016800A

公开(公告)日：2000-10-04

申请号：AU4016800

申请日：2000-03-20

Applicant: QUALCOMM INC

Inventor： TERASAWA DAISUKE

IPC: H04M1/19 ,  H04N7/14 ,  H04M1/60

公开(公告)号：AU3383400A

公开(公告)日：2000-09-14

申请号：AU3383400

申请日：2000-02-25

Applicant: QUALCOMM INC

Inventor： TIEDEMANN EDWARD G JR ,  TERASAWA DAISUKE ,  SARKAR SANDIP ,  JOU YU-CHEUN ,  ODENWALDER JOSEPH P ,  SHANBHAG ABIHIJT ,  WILLENEGGER SERGE

IPC: H04B1/7073 ,  H04J3/06 ,  H04J13/00 ,  H04W36/08 ,  H04W56/00 ,  H04Q7/38

Abstract: A method and system that enables faster acquisition of the forward link signal of a target base station in a mixed network of synchronous and asynchronous base stations is disclosed. The serving base station transmits in a neighbor list an estimated timing error 417 between the serving base station and a target base station. By utilizing the timing information, a mobile station estimates the relative time offset 408 between forward link signals received from the serving base station and signals received from the target base station. Timing information acquired during handoff enables accurate updating of the estimated timing error 417 subsequently transmitted in the neighbor lists by the base stations.

公开(公告)号：CA2365007A1

公开(公告)日：2000-08-31

申请号：CA2365007

申请日：2000-02-25

Applicant: QUALCOMM INC

Inventor： TERASAWA DAISUKE ,  WILLENEGGER SERGE ,  SARKAR SANDIP ,  TIEDEMANN EDWARD G JR ,  JOU YU-CHEUN ,  ODENWALDER JOSEPH P ,  SHANBHAG ABHIJIT

IPC: H04B1/7073 ,  H04J3/06 ,  H04J13/00 ,  H04W36/08 ,  H04W56/00 ,  H04Q7/38

Abstract: A method and system that enables faster acquisition of the forward link sign al of a target base station in a mixed network of synchonous and asynchronous base stations is disclosed. The serving base station transmits in a neighbor list an estimated timing error (417) between the serving base station and a target base station. By utilizing the timing information, a mobile station estimates the relative time offset (408) between forward link signals receiv ed from the serving base station and signals received from the target base station. Timing information acquired during handoff enables accurate updatin g of the estimated timing error (417) subsquently transmitted in the neighbor lists by the base stations.

公开(公告)号：ES2306343T3

公开(公告)日：2008-11-01

申请号：ES06022087

申请日：2001-05-18

Applicant: QUALCOMM INC

Inventor： TERASAWA DAISUKE ,  GRILLI FRANCESCO ,  WILLENEGGER SERGE

IPC: H04B7/26 ,  H04J3/06 ,  H04W24/08 ,  H04W36/18 ,  H04W56/00

Abstract: Un procedimiento para una operación de transferencia progresiva en un sistema (100) de comunicaciones WCD-MA, que comprende: transmitir tramas de datos desde una primera estación (102) base a una estación (101) móvil de acuerdo con un primer desfase (122) temporal de las tramas de datos del enlace descendente, estando ajustado dicho primer desfase (122) temporal de las tramas de datos del enlace descendente a partir de una temporización de las tramas de canal de la primera estación (102) base; medir un desfase temporal del enlace descendente de recepción experimentado en dicha estación (101) móvil entre una primera transmisión de enlace descendente (111) recibida desde dicha primera estación base (102) y una segunda transmisión de enlace descendente (112) desde una segunda estación base; comunicar el mencionado desfase temporal de enlace descendente de recepción medido desde dicha estación móvil (101) a al menos un controlador (190) de estación base en comunicación con dichas primera y segunda estaciones (102, 103) base; determinar un segundo desfase (124) temporal de las tramas de datos del enlace descendente basándose en dicho desfase temporal de enlace descendente de recepción medido, estando fijado el mencionado segundo desfase (124) temporal de tramas de datos del enlace descendente a partir de una temporización de tramas de canal de la segunda estación (103) base, estando dichos primer y segundo desfases (122, 124) temporales de tramas de datos de enlace descendentes en incrementos de un número predeterminado de segmentos de tiempo; comunicar el mencionado segundo desfase (124) temporal de tramas de datos del enlace descendente a dicha estación móvil (101) para dicha operación de transferencia progresiva; transmitir las tramas de datos desde la mencionada segunda estación base (103) a la mencionada estación móvil (101) de acuerdo con el mencionado segundo desfase (124) temporal de las tramas de datos del enlace descendente, en el que las tramas de datos transmitidas desde las mencionadas primera y segunda estaciones base (102, 103) llevan los mismos símbolos (S1X, S2X) de datos para dicha operación de transferencia progresiva; ajustar la temporización de un elemento de ajuste (201) de desfase temporal en dicha estación móvil (101) para ajustar la temporización de los símbolos de datos según los mencionados primer y segundo desfases temporales (122, 124) de las tramas de datos de enlace descendente comunicados para identificar los símbolos de datos correspondientes en tramas de datos transmitidos desde dichas primera y segunda estaciones base (102, 103) para dicha operación de transferencia progresiva.

公开(公告)号：DE60134184D1

公开(公告)日：2008-07-03

申请号：DE60134184

申请日：2001-05-18

Applicant: QUALCOMM INC

Inventor： TERASAWA DAISUKE ,  GRILLI FRANCESCO ,  WILLENEGGER SERGE

IPC: H04B7/26 ,  H04J3/06 ,  H04W24/08 ,  H04W36/18 ,  H04W56/00

Abstract: A novel and improved method and apparatus, in a WCDMA communication system, for informing a mobile station of a downlink data frame time offset by determining the downlink data frame time offset, and transmitting the downlink data frame time offset via an Active Set Update message transmitted from a cell to mobile station. Once an Active Set Update message is received, the data frame time offset information is provided to a timing block which may determine data frame boundary of each downlink signal. Timing block may then adjust the PN sequence timing corresponding to the downlink signal associated with the data frame time offset such that corresponding data symbols in each data frame are correctly soft combined in a combiner.