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    METHOD AND APPARATUS FOR MITIGATING INTERFERENCE IN A COMMUNICATION SYSTEM
    1.
    发明申请
    METHOD AND APPARATUS FOR MITIGATING INTERFERENCE IN A COMMUNICATION SYSTEM 审中-公开
    用于减轻通信系统干扰的方法和装置

    公开(公告)号：WO1996019873A1

    公开(公告)日：1996-06-27

    申请号：PCT/US1995014511

    申请日：1995-11-13

    Applicant: MOTOROLA INC.

    Inventor： MOTOROLA INC. ,  BAUM, Kevin ,  MUELLER, Bruce ,  CUDAK, Mark

    IPC: H04B01/00

    CPC classification number: H04W72/085 ,  H04W16/14 ,  H04W24/00 ,  H04W36/06 ,  H04W36/30 ,  H04W72/082

    Abstract: A communication system (100) that includes a base unit (101) and a subscriber unit (e.g., 103) employs a method (400) and apparatus (101) for mitigating interference (135) therein. The base unit (101) receives an uplink communication signal from the subscriber unit (103) at an uplink frequency and conveys a downlink communication signal to the subscriber unit (103) at a downlink frequency. Upon receiving (403) an uplink communication signal from the subscriber unit (103), the base unit (101) determines (405) a quality metric for the uplink frequency. When the quality metric is below a quality threshold (407), the base unit (101) and the subscriber unit (103) transfer (415) the communication signal to an alternate uplink frequency, while the downlink frequency remains unchanged.

    Abstract translation: 包括基站单元（101）和用户单元（例如，103）的通信系统（100）采用减轻其中的干扰（135）的方法（400）和装置（101）。 基站装置（101）以上行频率从用户单元（103）接收上行通信信号，并以下行链路频率向用户单元（103）传送下行通信信号。 在从用户单元（103）接收（403）上行链路通信信号时，基本单元（101）确定（405）上行链路频率的质量度量。 当质量度量低于质量阈值（407）时，基站单元（101）和用户单元（103）将通信信号传送（415）到备用上行链路频率，而下行链路频率保持不变。

    MULTIPLE USER COMMUNICATION SYSTEM, DEVICE AND METHOD WITH OVERLAPPING UPLINK CARRIER SPECTRA
    3.
    发明申请
    MULTIPLE USER COMMUNICATION SYSTEM, DEVICE AND METHOD WITH OVERLAPPING UPLINK CARRIER SPECTRA 审中-公开
    多用户通信系统，具有重叠上行载波频谱的设备和方法

    公开(公告)号：WO1997041645A1

    公开(公告)日：1997-11-06

    申请号：PCT/US1997006081

    申请日：1997-04-11

    Applicant: MOTOROLA INC.

    Inventor： MOTOROLA INC. ,  BAUM, Kevin ,  NADGAUDA, Nikhil, S. ,  PETERSON, Roger, Laurin ,  KELTON, James, Robert

    IPC: H04B01/40

    CPC classification number: H04W52/146 ,  H04B1/1027 ,  H04L5/023 ,  H04L5/143

    Abstract: The present invention provides a system for a method, system (300), subscriber unit (320, 330), and base/headend unit (310) for a bandwidth efficient multiple user digital communication system (300) that facilitates multiple user reverse link communication using overlapped transmit signal spectra of at least two overlap bandwidth subscriber units (320, 330). Overlap bandwidth subscriber units (320, 330) receive a forward link signal, each deriving a frequency reference from the forward link signal and a symbol timing reference from the forward link signal, and transmitting a reverse link signal to the base/headend unit (310) that receives a composite reverse link signal of the reverse link signals. Each reverse link signal includes at least one modulated data carrier with distinct carrier frequencies. Each transmitted reverse link signal has a symbol timing responsive to the symbol timing reference, and the frequency spectra of the reverse link signals overlap using overlapped transmit signal spectra of at least two overlap bandwidth subscriber units (320, 330).

    Abstract translation: 本发明提供一种用于方法，系统（300），用户单元（320,330）和用于带宽有效的多用户数字通信系统（300）的基站/前端单元（310）的系统，其有助于多用户反向链路通信 使用至少两个重叠带宽用户单元（320,330）的重叠发送信号频谱。 重叠带宽用户单元（320,330）接收前向链路信号，每个前向链路信号从正向链路信号和来自前向链路信号的符号定时参考中导出频率参考，并将反向链路信号发送到基站/前端单元（310 ），其接收反向链路信号的复合反向链路信号。 每个反向链路信号包括具有不同载波频率的至少一个调制数据载波。 每个发送的反向链路信号具有响应于符号定时参考的符号定时，并且反向链路信号的频谱使用至少两个重叠带宽用户单元（320,330）的重叠发射信号频谱重叠。

    MULTICARRIER REVERSE LINK TIMING SYNCHRONIZATION SYSTEM, DEVICE AND METHOD
    4.
    发明申请
    MULTICARRIER REVERSE LINK TIMING SYNCHRONIZATION SYSTEM, DEVICE AND METHOD 审中-公开
    多媒体逆向链路同步同步系统，设备和方法

    公开(公告)号：WO1997041658A1

    公开(公告)日：1997-11-06

    申请号：PCT/US1997006079

    申请日：1997-04-11

    Applicant: MOTOROLA INC.

    Inventor： MOTOROLA INC. ,  BAUM, Kevin ,  KELTON, James, Robert ,  RASKY, Phillip, David

    IPC: H04J03/06

    CPC classification number: H04W56/0005 ,  H04J3/0682

    Abstract: The present invention provides a communication system (100), device (200), and method of reverse link symbol timing synchronization of transmitted signals to facilitate reverse link timing synchronization. A base unit (204) transmits a forward link signal (160) and determines a timing offset for signals received on a reverse link synchronization channel (150). A plurality of multicarrier subscriber units (202) receive a forward link signal (160) and transmits a reverse link symbol timing synchronization burst on a reverse link channel (160).

    Abstract translation: 本发明提供一种通信系统（100），装置（200）以及发送信号的反向链路符号定时同步的方法，以便于反向链路定时同步。 基站单元（204）发送前向链路信号（160），并确定在反向链路同步信道（150）上接收的信号的定时偏移。 多个多载波用户单元（202）接收前向链路信号（160），并在反向链路信道（160）上发送反向链路符号定时同步突发。

    METHOD AND APPARATUS FOR MITIGATING INTERFERENCE IN A COMMUNICATION SYSTEM
    6.
    发明公开
    METHOD AND APPARATUS FOR MITIGATING INTERFERENCE IN A COMMUNICATION SYSTEM 失效
    方法降低干扰联合国设备的通信系统

    公开(公告)号：EP0761042A1

    公开(公告)日：1997-03-12

    申请号：EP95939823.0

    申请日：1995-11-13

    Applicant: MOTOROLA INC.

    Inventor： BAUM, Kevin ,  MUELLER, Bruce ,  CUDAK, Mark

    IPC: H04J1 ,  H04B1 ,  H04B3 ,  H04B15 ,  H04J3 ,  H04W16 ,  H04W72 ,  H04W24 ,  H04W36

    CPC classification number: H04W72/085 ,  H04W16/14 ,  H04W24/00 ,  H04W36/06 ,  H04W36/30 ,  H04W72/082

    Abstract: A communication system (100) that includes a base unit (101) and a subscriber unit (e.g., 103) employs a method (400) and apparatus (101) for mitigating interference (135) therein. The base unit (101) receives an uplink communication signal from the subscriber unit (103) at an uplink frequency and conveys a downlink communication signal to the subscriber unit (103) at a downlink frequency. Upon receiving (403) an uplink communication signal from the subscriber unit (103), the base unit (101) determines (405) a quality metric for the uplink frequency. When the quality metric is below a quality threshold (407), the base unit (101) and the subscriber unit (103) transfer (415) the communication signal to an alternate uplink frequency, while the downlink frequency remains unchanged.

    MULTICARRIER REVERSE LINK TIMING SYNCHRONIZATION SYSTEM, DEVICE AND METHOD
    8.
    发明公开
    MULTICARRIER REVERSE LINK TIMING SYNCHRONIZATION SYSTEM, DEVICE AND METHOD 失效
    设备，方法和系统对于多载波RUCK通道时间同步

    公开(公告)号：EP0840964A1

    公开(公告)日：1998-05-13

    申请号：EP97920360.0

    申请日：1997-04-11

    Applicant: MOTOROLA, INC.

    Inventor： BAUM, Kevin ,  KELTON, James, Robert ,  RASKY, Phillip, David

    IPC: H04J3

    CPC classification number: H04W56/0005 ,  H04J3/0682

    Abstract: The present invention provides a communication system (100), device (200), and method of reverse link symbol timing synchronization of transmitted signals to facilitate reverse link timing synchronization. A base unit (204) transmits a forward link signal (160) and determines a timing offset for signals received on a reverse link synchronization channel (150). A plurality of multicarrier subscriber units (202) receive a forward link signal (160) and transmits a reverse link symbol timing synchronization burst on a reverse link channel (160).

    MULTIPLE USER COMMUNICATION SYSTEM, DEVICE AND METHOD WITH OVERLAPPING UPLINK CARRIER SPECTRA
    9.
    发明公开
    MULTIPLE USER COMMUNICATION SYSTEM, DEVICE AND METHOD WITH OVERLAPPING UPLINK CARRIER SPECTRA 失效
    多用户通信系统和方法与装置重叠AUFWÄRTSTRÄGERSPEKTRA

    公开(公告)号：EP0861529A1

    公开(公告)日：1998-09-02

    申请号：EP97921159.0

    申请日：1997-04-11

    Applicant: MOTOROLA, INC.

    Inventor： BAUM, Kevin ,  NADGAUDA, Nikhil, S. ,  PETERSON, Roger, Laurin ,  KELTON, James, Robert

    IPC: H04B7 ,  H04L5 ,  H04B1

    CPC classification number: H04W52/146 ,  H04B1/1027 ,  H04L5/023 ,  H04L5/143

    Abstract: The present invention provides a system for a method, system (300), subscriber unit (320, 330), and base/headend unit (310) for a bandwidth efficient multiple user digital communication system (300) that facilitates multiple user reverse link communication using overlapped transmit signal spectra of at least two overlap bandwidth subscriber units (320, 330). Overlap bandwidth subscriber units (320, 330) receive a forward link signal, each deriving a frequency reference from the forward link signal and a symbol timing reference from the forward link signal, and transmitting a reverse link signal to the base/headend unit (310) that receives a composite reverse link signal of the reverse link signals. Each reverse link signal includes at least one modulated data carrier with distinct carrier frequencies. Each transmitted reverse link signal has a symbol timing responsive to the symbol timing reference, and the frequency spectra of the reverse link signals overlap using overlapped transmit signal spectra of at least two overlap bandwidth subscriber units (320, 330).

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