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公开(公告)号:AU4054097A
公开(公告)日:1998-02-25
申请号:AU4054097
申请日:1997-08-06
Applicant: QUALCOMM INC
Inventor: PADOVANI ROBERTO
Abstract: In a communications network, a network user communicates through a remote unit via at least one base station. The communications network includes a first mobile switching center for controlling communications through a first set of base stations and a second mobile switching center for controlling communications through a second set of base stations. The network also includes a service providing base station controlled by the first mobile switching center and providing service to a first transition coverage area using a first pseudorandom noise code. The first transition coverage area defines a boundary between a first system controlled by the first mobile switching center and a second system controlled by the second mobile switching center. The network further includes a passage providing base station controlled by the second mobile switching center for providing service to the first transition area using a second pseudorandom noise code offset in time by a first amount from the first pseudorandom noise code. The passage providing base station provides service to a remote unit only if the remote unit is entering the first transition coverage area while exiting the second system or is about to exit the first transition coverage area while entering the second system.
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公开(公告)号:FI974471A
公开(公告)日:1998-02-16
申请号:FI974471
申请日:1997-12-09
Applicant: QUALCOMM INC
Inventor: ZIV NOAM ABRAHAM , PADOVANI ROBERTO
Abstract: A method and apparatus of determining signal strength, regardless of the signal data rate, in a receiver receiving signals from a variable rate transmitter. The incoming signal is comprised of a series of frames. Each frame is comprised of a number of power control groups containing data. The number of the power control groups containing data within each frame is dependent on the unknown data rate. The position of the power control groups within the frame is a pseudorandom. The signal strength of an incoming signal of unknown data rate is determined based upon an active set of power control groups within a frame. The active set of power control groups contain data independent of the unknown data rate. This signal strength information may be used to indicate that the signal strength is sufficient to perform further signal processing.
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公开(公告)号:ES2110248T3
公开(公告)日:1998-02-01
申请号:ES94920280
申请日:1994-06-20
Applicant: QUALCOMM INC
Inventor: BUTLER BRIAN K , PADOVANI ROBERTO , ZEHAVI EPHRAIM
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174.
公开(公告)号:CZ283123B6
公开(公告)日:1998-01-14
申请号:CS387192
申请日:1991-06-21
Applicant: QUALCOMM INC
Inventor: GILHOUSEN KLEIN S , JACOBS IRWIN M , PADOVANI ROBERTO , WEAVER LINDSAY A JR , WHEATLEY CHARLES E III , VITERBI ANDREW J
IPC: H04B1/707 , H04B1/7075 , H04B1/709 , H04B1/7115 , H04B7/005 , H04B7/26 , H04J3/02 , H04J3/16 , H04J3/22 , H04J11/00 , H04J13/00 , H04J13/10 , H04J13/18 , H04L20060101 , H04L1/00 , H04L1/06 , H04L1/08 , H04L5/02 , H04L5/12 , H04L23/02 , H04L27/30 , H04W52/26 , H04B7/216 , H04B7/204 , H04B1/66
Abstract: A cell site, comprising: means for modulating configured to format digital data for transmission on a communications channel and to insert at least one timing command into the digital data, the digital data comprising a plurality of bits; means for transmitting coupled to the means for modulating and configured to receive the digital data from the means for modulating, convert the digital data to analog data, and transmit the analog data on the communications channel; and means for receiving configured to receive a signal from at least one remote unit and to determine a timing error of the received signal to be used to generate the timing command in accordance with the timing error, the means for receiving being coupled to the means for modulating and configured to provide the timing command to the means for modulating.
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公开(公告)号:FI974132A
公开(公告)日:1998-01-05
申请号:FI974132
申请日:1997-11-04
Applicant: QUALCOMM INC
Inventor: ZIV NOAM A , PADOVANI ROBERTO , LEVIN JEFFREY A , EASTON KENNETH D
Abstract: An integrated search processor used in a modem for a spread spectrum communications system buffers receive samples and utilizes a time sliced transform processor operating on successive offsets from the buffer. The search processor autonomously steps through a search as configured by a microprocessor specified search parameter set, which can include the group of antennas to search over, the starting offset and width of the search window to search over, and the number of Walsh symbols to accumulate results at each offset. The search processor calculates the correlation energy at each offset, and presents a summary report of the best paths found in the search to use for demodulation element reassignment. The search is done in a linear fashion independent of the probability that a signal being searched for was transmitted at any given time.
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176.
公开(公告)号:MX9707424A
公开(公告)日:1997-12-31
申请号:MX9707424
申请日:1996-03-29
Applicant: QUALCOMM INC
IPC: H04B1/06 , H04B7/00 , H04B7/005 , H04B7/26 , H04B17/00 , H04W52/08 , H04W52/22 , H04W52/24 , H04W52/28 , H04W52/36 , H04W52/60 , H05K11/02 , H04B07/005 , H04B07/26 , H04Q07/04
Abstract: Se expone un método y aparato para controlar la energía de transmision en un sistema de comunicacion movil. El método expuesto proporciona un método de control de energía de ciclo cerrado. Una estacion movil (30) proporciona informacion sobre la calidad de la señal recibida a partir de la estacion base (50), y la estacion base (50) responde al ajustar la energía asignada a ese usuario en una señal de estacion base compartida. La energía de transmision se ajusta inicialmente mediante un gran incremento y después salta hacia abajo a una velocidad creciente decendente. La estacion movil (30) también proporciona informacion a la estacion base (50) en cuanto a su velocidad relativa y la estacion base (50) ajusta su energía de transmision de acuerdo con esta informacion de velocidad.
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公开(公告)号:AR001852A1
公开(公告)日:1997-12-10
申请号:AR33640296
申请日:1996-05-03
Applicant: QUALCOMM INC
Inventor: ZIV NOAM A , PADOVANI ROBERTO , LEVIN JEFFREY A , EASTON KENNETH D
IPC: H04L1/02 , H04B1/707 , H04B7/26 , H04J11/00 , H04J13/00 , H04L27/30 , H04Q7/20 , H04Q7/22 , H04J13/02
Abstract: La invención se refiere a un método para buscar una senal de múltiples trayectorias, transmitida a velocidad variable desconocida y que comparte unabanda de frecuencia común en sistemas de comunicaciones de telefonía celular. El método esimpl ementado por una procesadora de exploración integrada,utilizada en un modem para un sistema de comunicaciones de espectro distinguido, memoriza temporalmente muestras de recepción y utiliza unaprocesadora de transformadas, en tiemporeban ado, que opera en sucesivos desplazamientos de la memoria intermedia. La procesadora de exploraciónprogresa de manera autónoma, mediante pasos, a través de una exploración configurada por un conjunto de parámetros de exploraciónespecif icada pormicro-procesadora, el cual conjunto puede incluir el grupo de antenas a ser explorado, el desplazamiento de partida y el ancho de la ventana de exploracióna ser explorada, y la cantidad de símbolos de Walsh, a efectos deacumular los re sultados en cada uno de los desplazamientos. La procesadora de exploracióncalcula la energía de correlación en cada uno de los desplazamientos, y presenta un informe resumido de las mejoras trayectorias halladas enlaexploración para ser util izadas en las reasignaciones de los elementos de demodulación. La exploración es efectuada en una modalidad lineal,independientemente de la probabilidad de que una senal que se está buscando, hubiera sidotransmitida en cualquier tiempo dado
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公开(公告)号:AU683479B2
公开(公告)日:1997-11-13
申请号:AU7113694
申请日:1994-06-20
Applicant: QUALCOMM INC
Inventor: BUTLER BRIAN K , PADOVANI ROBERTO , ZEHAVI EPHRAIM
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公开(公告)号:FI974132A0
公开(公告)日:1997-11-04
申请号:FI974132
申请日:1997-11-04
Applicant: QUALCOMM INC
Inventor: ZIV NOAM A , PADOVANI ROBERTO , LEVIN JEFFREY A , EASTON KENNETH D
Abstract: An integrated search processor used in a modem for a spread spectrum communications system buffers receive samples and utilizes a time sliced transform processor operating on successive offsets from the buffer. The search processor autonomously steps through a search as configured by a microprocessor specified search parameter set, which can include the group of antennas to search over, the starting offset and width of the search window to search over, and the number of Walsh symbols to accumulate results at each offset. The search processor calculates the correlation energy at each offset, and presents a summary report of the best paths found in the search to use for demodulation element reassignment. The search is done in a linear fashion independent of the probability that a signal being searched for was transmitted at any given time.
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公开(公告)号:MX9705396A
公开(公告)日:1997-10-31
申请号:MX9705396
申请日:1996-01-17
Applicant: QUALCOMM INC
Inventor: PADOVANI ROBERTO , TIEDEMANN EDWARD G JR , ODENWALDER JOSEPH P , ZEHAVI EPHRAIM , WHEATLEY CHARLES E III
IPC: H03M13/23 , H04B1/707 , H04B1/7075 , H04B1/7115 , H04B7/005 , H04B7/26 , H04J3/00 , H04J3/16 , H04J3/22 , H04J11/00 , H04J13/00 , H04J13/10 , H04J13/18 , H04L1/00 , H04L1/08 , H04L5/02 , H04W52/26 , H04J03/16 , H04B07/26
Abstract: Un método y aparato para instalar diversos tipos de datos, y a diversas velocidades, en un formato estructurado de manera unica para su transmision. Los datos para el formateo de transmision pueden ser datos de voz proporcionados por el vocodificador (14) o diferentes tipos de tráfico secundario. Los datos se organizan en estructuras de una duracion de tiempo predeterminada para su transmision por un microprocesador (18). Las estructuras de datos se organizan, dependiendo de que los datos, se encuentren a una de diversas velocidades de transmision de datos. Los datos del vocodificador se proporcionan por el vocodificador (14) a una de varias velocidades de transmision de datos y se organizan en la estructura de acuerdo a un formato predeterminado. Las estructuras pueden formatearse con una asignacion multiple de datos del vocodificador con datos no-vocodificados que se encuentran a una mayor velocidad de transmision de datos de estructura. Los diferentes tipos de datos no-vocodificados pueden organizarse a fin de encontrarse también a la mayor velocidad de transmision de datos de estructura. Pueden proporcionarse datos de control adicionales dentro de las estructuras de datos para soportar diversos aspectos de la transmision y recuperacion después de la recepcion.
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