公开(公告)号：DK0676107T3

公开(公告)日：2004-02-16

申请号：DK94932118

申请日：1994-10-28

Applicant: QUALCOMM INC

Inventor： PADOVANI ROBERTO ,  BLAKENEY ROBERT D II ,  WEAVER LINDSAY A JR ,  ZIV NOAM A ,  WILLIAMSON PAUL T

IPC: H04B1/7087 ,  H04B1/7117 ,  H04B7/08 ,  H04B7/26 ,  H04J13/00

Abstract: In a receiver having a plurality of demodulation elements, a method of assigning the plurality of demodulation element so a set of available signals. A first method emphasizes diversity of transmitting devices so that power control is optimal. A second method emphasizes the maximum signal strength available to produce aggregate maximum signal strength. Both methods control the number of reassignments so that excessive data is not lost during the reassignment process. The apparatus comprises the plurality of demodulation elements, at least one searcher element, and a controller.

公开(公告)号：ES2184871T3

公开(公告)日：2003-04-16

申请号：ES96919001

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

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.

公开(公告)号：ES2171716T3

公开(公告)日：2002-09-16

申请号：ES96931407

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：DK0846379T3

公开(公告)日：2002-05-06

申请号：DK96931407

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：BR9712089A

公开(公告)日：1999-08-31

申请号：BR9712089

申请日：1997-05-23

Applicant: QUALCOMM INC

Inventor： WEAVER LINDSAY A JR ,  MUNSINGER DAVID B ,  PADOVANI ROBERTO ,  ZIV NOAM A ,  KARMI GADI ,  GILHOUSEN KLEIN S

IPC: H04W24/02 ,  H04W36/14 ,  H04Q7/38 ,  H04B7/26

Abstract: The cellular communication system includes a number of base stations through which a mobile unit communicates. The mobile unit maintains a list of active base stations with which it can communicate. One of the active stations is in communication with the mobile and uses this communication to measure the round-trip-delay between mobile and station. This delay is compared with a threshold and if this is exceeded, and the base station is a boundary station, then a hard hand-off is executed. The mobile can also monitor candidate base stations and if a triggering pilot signal is detected a hand-off can be triggered. Preferably the handoff can be between base stations controlled by different mobile switching centres.

公开(公告)号：BR9708430A

公开(公告)日：1999-08-03

申请号：BR9708430

申请日：1997-03-11

Applicant: QUALCOMM INC

Inventor： ZIV NOAM A ,  TIEDEMANN EDWARD G JR

IPC: H04B7/005 ,  H04B7/26 ,  H04W36/18 ,  H04W52/14 ,  H04W52/16 ,  H04W52/34 ,  H04W52/40 ,  H04Q7/38 ,  H04Q7/32

Abstract: In a communications system including a set of base stations (14, 16, 18, 20) in communication with a remote unit (10), a technique is provided for centrally controlling transmission power. In accordance with this technique, a reverse link frame of data is first received from the remote unit (10) at each of the set of base stations (14, 16, 18, 20). The base stations (14, 16, 18, 20) determine a frame quality indication corresponding to the received reverse link frame of data and transmit the frame quality indication to a system controller (22, 24). The system controller (22, 24) then calculates, based on the frame quality indication from each of the set of base stations (14, 16, 18, 20), an aggregated frame quality indication corresponding to the received reverse link frame of data, and based on the aggregated frame quality indication calculates an absolute reverse threshold value. The absolute reverse threshold value is then provided to each of the set of base stations (14, 16, 18, 20), and each of the set of base stations (14, 16, 18, 20) provides a power control command for the remote unit (10) based on a comparison between the frame quality indication determined at the base station and the absolute reverse threshold value.

公开(公告)号：HK1010951A1

公开(公告)日：1999-07-02

申请号：HK98110011

申请日：1998-08-19

Applicant: QUALCOMM INC

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

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

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：AU703779B2

公开(公告)日：1999-04-01

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：AU7258298A

公开(公告)日：1998-11-24

申请号：AU7258298

申请日：1998-04-29

Applicant: QUALCOMM INC

Inventor： BENDER PAUL E ,  ZIV TONI L ,  KARMI GADI ,  LEE KUO-CHUN ,  LUEDER SUZANNE M ,  MOHANTY BIBHU P ,  OTTINGER ROBERT C ,  QUICK ROY F ,  STACHWICK STEVEN P ,  SUTTON TODD ,  TANGIRALA VENKAT ,  ZIV NOAM A

IPC: H04W36/14 ,  H04W36/18 ,  H04Q7/38

Abstract: A method and apparatus for operating a cellular telephone system that supports performing an inter-system soft handoff is described. A subscriber unit generates a pilot strength measurement report when the pilot channel from a base station is detected. When a base station controller receiving the pilot strength measurement report determines that the base station is part of a second cellular telephone system, a inter-system soft handoff request is generated. An admission control subsystem receives the inter-system soft handoff and either grants or denies the request base on the traffic level with the second cellular telephone system. In a preferred embodiment of the invention, the traffic level is determined based on link load messages received periodically by the admission control subsystem that are generated by an interface port coupled to an interconnect between the first cellular telephone system and the second cellular telephone system. The link load message include peak queue length and average frame rate information.

公开(公告)号：CA2248833A1

公开(公告)日：1997-09-18

申请号：CA2248833

申请日：1997-03-11

Applicant: QUALCOMM INC

Inventor： TIEDEMANN EDWARD G JR ,  ZIV NOAM A

IPC: H04B7/005 ,  H04B7/26 ,  H04W36/18 ,  H04W52/14 ,  H04W52/16 ,  H04W52/34 ,  H04W52/40 ,  H04Q7/38

Abstract: Method and apparatus for providing centralized power control in a communication system, in which each base station (14, 16, 18, 20) in the system operates to control both the forward link and the reverse link power. A radio link manager (22) provides a common threshold for determining the proper power level of the reverse link signal at each base station (14, 16, 18, 20). The radio link manager (22) also provides a ratio of the forward link signal strength to a pilot signal strength to control forward link power control. The radio link manager (22) provides the threshold and ratio uniformly to all base stations (14, 16, 18, 20) to provide a uniform operating point for all base stations (14, 16, 18, 20) in the system, thus, increasing capacity. The same centralized power control is easily expanded to provide a mechanism for intersystem soft handoff.