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公开(公告)号：AT227481T
公开(公告)日：2002-11-15
申请号：AT96919001
申请日：1996-05-02
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：PT846379E
公开(公告)日：2002-07-31
申请号：PT96931407
申请日：1996-08-23
Applicant: QUALCOMM INC
Inventor： MEAGHER BRUCE R , PADOVANI ROBERTO , ZIV NOAM A
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.
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公开(公告)号：IN187561B
公开(公告)日：2002-05-18
申请号：IN964MA1994
申请日：1994-10-05
Applicant: QUALCOMM INC
Inventor： BLAKENEY ROBERT D , WEAVER LINDSAY A , ZIV NOAM A , WILLIAMSON PAUL T , PADOVANI ROBERTO
IPC: H04B1/00
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公开(公告)号：NZ502909A
公开(公告)日：2001-04-27
申请号：NZ50290997
申请日：1997-05-22
Applicant: QUALCOMM INC
Inventor： BAKER KENNETH R , HOLCMAN TONI L , MUNSINGER DAVID B , WEAVER LINDSAY A , ZIV NOAM A
Abstract: Communications between a mobile and first and second base stations in a cellular system are directed by measuring the round trip delay of an active communication signal between the first base station and the mobile and entering a measurement directed hard handoff state by an active communication control unit located in a first mobile switching center of the system. The active communication control unit accesses a measurement directed hard handoff table to determine, on the basis of the measured round trip delay corresponding to the first active communication signal, whether the location of the mobile corresponds to an area where handoff is desirable, that is handoff will most likely not drop the communication in progress.
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公开(公告)号：IN184799B
公开(公告)日：2000-09-30
申请号：IN831MA1994
申请日：1994-08-30
Applicant: QUALCOMM INC
Inventor： GARDNER WILLIAM R , JACOBS PAUL E , PADOVANI ROBERTO , ZIV NOAM A , LAM KATHERINE S , DEJACO ANDREW P
IPC: H04B17/00
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Patent Agency Ranking
公开(公告)号：HK1021103A1
公开(公告)日：2000-05-26
申请号：HK99103530
申请日：1999-08-13
Applicant: QUALCOMM INC
Inventor： LEE KUO-CHUN , KARMI GADI , MOHANTY BIBHU , SUTTON TODD R , ZIV NOAM A
Abstract: A method and apparatus for performing an inter-system soft handoff is described. In accordance with the present invention, when a subscriber unit crosses from a first cellular system to a second cellular system, a base station controller determines if sufficient network resources are available to conduct a inter-system soft handoff. If so, the base station controller generates a set of signaling messages that cause call processing resource to be allocated and for the call to be processed at the second cellular system. The base station controller then perform data-selection and data-broadcast for the call by transmitting data to the subscriber unit by way of the second cellular system as well as via one or more base stations to which the base station controller is directly coupled. The determination as to whether sufficient network resources are available to conduct the inter-system soft handoff is based on the type of connection that exists between the first cellular system and the second cellular system, the number of inter-system calls being conducted, and the frame offset of the call currently being processed.
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公开(公告)号：HK1017523A1
公开(公告)日：1999-11-19
申请号：HK99102321
申请日：1999-05-25
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：BR9608287A
公开(公告)日：1999-06-15
申请号：BR9608287
申请日：1996-05-02
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：AU8779798A
公开(公告)日：1999-03-01
申请号：AU8779798
申请日：1998-08-11
Applicant: QUALCOMM INC
Inventor： BENDER PAUL E , ZIV NOAM A
Abstract: The present invention provides a method and apparatus for allowing a base station or base station controller to adjust transmissions to fixed location subscribers in closed-loop communication systems. In a closed-loop communication system, a base station exchanges signals with both fixed location and mobile user stations. When a user or subscriber initially registers with the base station, the base station determines a status of this subscriber based on, for example, an electronic serial number transmitted to the base station. The base station compares the electronic serial number to a database (Home Location Register) which determines whether the user corresponds to a fixed station or a mobile station. If the user is a fixed station, then the base station lowers nominal and minimum power level thresholds. Based on the lowered thresholds, the base station thereafter transmits forward link signals to the fixed station at a lower power level. As a result, the base station can increase its capacity due to the lower overall power rate.
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公开(公告)号：FI982520A
公开(公告)日：1999-01-22
申请号：FI982520
申请日：1998-11-20
Applicant: QUALCOMM INC
Inventor： WEAWER JR LINSAY A , MUNSINGER DAVID B , PADOVANI ROBERTO , ZIV NOAM A , KARMI GADI , GILHOUSEN KLEIN S
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.
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