公开(公告)号：MX9708514A

公开(公告)日：1998-02-28

申请号：MX9708514

申请日：1996-05-02

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 ,  H04B07/26 ,  H04B01/707

Abstract: Un procesador de busqueda integrado (128) utilizado en un modem (110) para un sistema de comunicacion de espectro difundido, separa en una memoria intermedia (172) muestras de señales recibidas y utiliza un procesador transformador de intervalo de tiempo (120) que opera en desplazamientos sucesivos a partir de la memoria intermedia (173). El procesador de busqueda (128) se acciona por etapas de manera autonoma a través de una busqueda segun se configuro por un conjunto de parámetros de busqueda específicos del microprocesador (136), el cual puede incluir el grupo de antenas para terminar la busqueda, el desplazamiento de inicio y la amplitud de la ventana de busqueda para terminar la busqueda y el numero de símbolos Walsh para acumular los resultados de cada desplazamiento. El procesador de busqueda (128) se calcula la energía de correlacion en cada desplazamiento y presenta un reporte sumario de la mejor trayectoria encontrada en la busqueda para utilizar la reinstalacion del elemento de demodulacion (122). La busqueda se hace de manera lineal independiente de la probabilidad de que una señal buscada haya sido transmitida en cualquier momento dado.

公开(公告)号：AU3137797A

公开(公告)日：1997-12-09

申请号：AU3137797

申请日：1997-05-22

Applicant: QUALCOMM INC

Inventor： WEAVER LINDSAY A JR ,  HOLCMAN TONI L ,  MUNSINGER DAVID B ,  ZIV NOAM A ,  BAKER KENNETH R

IPC: H04W24/02 ,  H04W36/12 ,  H04W36/14 ,  H04Q7/22 ,  H04Q7/38

Abstract: In a communications network, a network user communicates using a remote unit with another user via at least one base station. The network is comprised of first and second mobile switching control stations respectively controlling communications through a first set of base stations including a first base station and through a second set of base stations including a second base station. To direct communications between the remote unit and the first and second base stations the first base station measures a round trip delay of an active communication signal between the first base station and the remote unit. The remote unit measures a first phase offset of a pilot signal received from a first candidate base station and reports it to the first mobile switching center via the first base station. The first mobile switching center calculates a candidate round trip delay between the remote unit and the first candidate base station based on the first phase offset and the round trip delay of the active communication signal. A active communication control unit accesses a measurement directed hard handoff table to determine a location of the remote unit based on the round trip delay corresponding to the first active communication signal and the candidate round trip delay.

公开(公告)号：ZA9608111B

公开(公告)日：1997-04-21

申请号：ZA9608111

申请日：1996-09-26

Applicant: QUALCOMM INC

Inventor： ZIV NOAM A ,  ROBBINS BARRY

IPC: H04L12/56 ,  H04M3/428 ,  H04M3/56 ,  H04W28/06 ,  H04W40/02 ,  H04W76/02 ,  H04W88/18 ,  H04B ,  H04L ,  H04M

CPC classification number: H04M3/56 ,  H04M3/428 ,  H04M2207/18 ,  H04M2207/206 ,  H04W28/06 ,  H04W40/02 ,  H04W76/10 ,  H04W88/181

Abstract: A method and system for processing telephone calls within a digital wireless telephone system is described. During the initiation of a telephone call from a wireless subscriber unit, it is determined whether the receiving subscriber unit is also part of a digital wireless telephone system that has compatible vocoding capability. If so, vocoded data from the digital wireless telephone system is converted into tones that are introduced into a wire based telephone system for routing to the appropriate receiving digital wireless telephone system. When these tones are received by the receiving digital wireless telephone system, the vocoded data is regenerated based on the tones and then transmitted to the receiving subscriber unit. If the originating and receiving wireless subscriber units are part of the same digital wireless telephone system, the steps of conversion to tones and introduction into the wire based telephone system are omitted, and the call is routed completely within that digital wireless telephone system. In another embodiment of the invention, the step of conversion to tones is entirely omitted and the vocoded data is passed between the two digital wireless telephone systems via an all digital connection such as an ATM packet network or a wire based telephone connection where the integrity of digital information is assured.

公开(公告)号：AU7009596A

公开(公告)日：1997-03-19

申请号：AU7009596

申请日：1996-08-23

Applicant: QUALCOMM INC

Inventor： PADOVANI ROBERTO ,  MEAGHER BRUCE R ,  ZIV NOAM A

IPC: H03M13/05 ,  H03M13/23 ,  H04L1/00 ,  H04L1/08 ,  H04B7/26

Abstract: A system and method for assembling a single data stream from multiple instances of that data stream is described. Data transmitted from a cellular telephone subscriber unit is received by a set of base transceiver stations. Each base transceiver station performs various error detection procedures on segments of the data referred to as frames. These error detection procedures may include CRC check sum verification, Yamamoto metric calculation, re-encoded signal error rate calculation, or a combination thereof. The results of these error detection procedures are placed into a frame quality metric. The frame, frame quality metric, a time stamp and an address are placed into a packet that is transmitted from each base transceiver station to a base station controller which matches packets attempting to transmit the same information using the time stamp and selects one frame from the packets for further processing based on the associated frame quality metric.

公开(公告)号：ZA967082B

公开(公告)日：1997-02-24

申请号：ZA967082

申请日：1996-08-20

Applicant: QUALCOMM INC

Inventor： PADOVANI ROBERTO ,  MEAGHER BRUCE R ,  ZIV NOAM A

IPC: H03M13/05 ,  H03M13/23 ,  H04L1/00 ,  H04L1/08 ,  H04B ,  H04L ,  H04Q

Abstract: A system and method for assembling a single data stream from multiple instances of that data stream is described. Data transmitted from a cellular telephone subscriber unit is received by a set of base transceiver stations. Each base transceiver station performs various error detection procedures on segments of the data referred to as frames. These error detection procedures may include CRC check sum verification, Yamamoto metric calculation, re-encoded signal error rate calculation, or a combination thereof. The results of these error detection procedures are placed into a frame quality metric. The frame, frame quality metric, a time stamp and an address are placed into a packet that is transmitted from each base transceiver station to a base station controller which matches packets attempting to transmit the same information using the time stamp and selects one frame from the packets for further processing based on the associated frame quality metric.

公开(公告)号：ZA9406674B

公开(公告)日：1995-05-02

申请号：ZA9406674

申请日：1994-08-31

Applicant: QUALCOMM INC

Inventor： GARDNER WILLIAM R ,  PADOVANI ROBERTO ,  LAM S KATHERINE ,  JACOBS PAUL E ,  ZIV NOAM A ,  DEJACO ANDREW P

IPC: H04B7/26 ,  H04L1/00 ,  H04L12/00 ,  H04L12/56 ,  H04Q11/04 ,  H04W24/00 ,  H04W28/22 ,  H04B ,  H04L ,  H04Q

CPC classification number: H04W28/22 ,  G10L19/22 ,  G10L19/24 ,  H04B7/2659 ,  H04L1/0014 ,  H04L1/0022 ,  H04L1/0025 ,  H04L47/10 ,  H04L47/14 ,  H04L47/263 ,  H04L47/33 ,  H04L47/38 ,  H04W24/00