Method of receiving and searching a signal transmitting in bursts

    公开(公告)号:AU699159B2

    公开(公告)日:1998-11-26

    申请号:AU6145896

    申请日:1996-05-02

    Applicant: QUALCOMM INC

    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.

    82.
    发明专利
    未知

    公开(公告)号:FI982520A0

    公开(公告)日:1998-11-20

    申请号:FI982520

    申请日:1998-11-20

    Applicant: QUALCOMM INC

    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.

    Method of receiving and searching a signal transmitting in b ursts

    公开(公告)号:AU6145896A

    公开(公告)日:1996-11-21

    申请号:AU6145896

    申请日:1996-05-02

    Applicant: QUALCOMM INC

    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.

    PACKET-BASED PROCESSING SYSTEM
    89.
    发明申请
    PACKET-BASED PROCESSING SYSTEM 审中-公开
    基于分组的处理系统

    公开(公告)号:WO2009026554A3

    公开(公告)日:2009-09-03

    申请号:PCT/US2008074091

    申请日:2008-08-22

    CPC classification number: H04W24/02 H04L49/90 H04L69/22 H04W88/02 H04W88/08

    Abstract: A packet-based processing system suitable for various applications, such as for a base station or a terminal in a wireless communication system, is described. The packet-based processing system may include multiple processing modules and at least one transport module. The processing modules may send packets to one another via a common packet interface and may operate asynchronously. The transport module(s) may forward the packets sent by the processing modules and may operate asynchronously with respect to the processing modules. Each processing module may include a network interface, at least one buffer, a packet parser, a packet builder, and at least one processing unit. Each processing module may support at least one service. Each packet may include a header and a payload. The header may include a source service address for a source service sending the packet and a destination service address for a recipient service receiving the packet.

    Abstract translation: 描述适用于各种应用的基于分组的处理系统,诸如用于无线通信系统中的基站或终端。 基于分组的处理系统可以包括多个处理模块和至少一个传输模块。 处理模块可以通过公共分组接口彼此发送分组,并且可以异步地操作。 传输模块可以转发由处理模块发送的分组,并且可以相对于处理模块异步地操作。 每个处理模块可以包括网络接口,至少一个缓冲器,分组解析器,分组构建器和至少一个处理单元。 每个处理模块可以支持至少一个服务。 每个分组可以包括报头和有效载荷。 报头可以包括用于发送分组的源服务的源服务地址和接收分组的接收方服务的目的地服务地址。

    METHOD AND APPARATUS FOR HARD HANDOFF IN A CDMA SYSTEM
    90.
    发明申请
    METHOD AND APPARATUS FOR HARD HANDOFF IN A CDMA SYSTEM 审中-公开
    CDMA系统中硬切换的方法和装置

    公开(公告)号:WO9744984A3

    公开(公告)日:1997-12-31

    申请号:PCT/US9709305

    申请日:1997-05-23

    Applicant: QUALCOMM INC

    CPC classification number: H04W36/30 H04W36/0083

    Abstract: In a communications network, a network user communicates through a remote unit (30) with another user via at least one base station (100). The communications network includes a first mobile switching center (MSC-I) which controls communications through a first set of base stations including a first base station (100). The remote unit (30) stores a list of active base stations which has an entry corresponding to each base station with which active communication is established. The first base station (100) has an entry on the list of active base stations. The first base station (100) measures a round trip delay of an active communication signal between the first base station (100) and the remote unit (30). A handoff of the active communication signal is initiated if the round trip delay of the active communication exceeds a threshold if the first base station (100) is designated as a reference base station. Alternatively, the remote unit (30) also stores a list of candidate base stations comprising an entry corresponding to each base station through which active communication may be possible but is not established. A handoff of the active communication signal is initiated if the list of candidate base stations comprises an entry corresponding to a triggering pilot signal.

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