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    1.
    发明专利
    未知

    公开(公告)号：DE60124293T2

    公开(公告)日：2007-02-15

    申请号：DE60124293

    申请日：2001-10-09

    Applicant: MOTOROLA INC

    Inventor： GHOSH AMITAVA ,  JALLOUL LOUAY

    IPC: H04L1/18 ,  H04W28/04 ,  H04W36/18

    Abstract: A method of combining soft-handoff with a hybrid ARQ scheme to maximize throughput and gain in a communications system. After receiving a frame from the MS (110), the BTSs (104 and 106) will process the frame and communicate to the MS over a forward control channel whether the frame contained any errors. If all BTSs communicate that the frame contains errors, the MS will retransmit the same frame to all BTSs with a flush bit set to instruct the BTSs 104 and 106 to combine the retransmitted frame with the original frame. If only some BTSs communicate that the frame contains errors, the MS will transmit the next frame to all BTSs that successfully decoded the frame with the flush bit set to instruct the BTSs to erase the previous frame from memory and not to combine the previous frame with the current frame. The MS will retransmit the frame to the BTSs that did not successfully decode the frame with the flush bit set to instruct the BTSs to combine the previous frame with the retransmitted frame.

    METHOD AND APPARATUS FOR SOFT HANDOFF COMMUNICATIONS IN A COMMUNICATION SYSTEM OPERATING ACCORDING TO MULTIPLE COMMUNICATION STANDARDS
    4.
    发明申请
    METHOD AND APPARATUS FOR SOFT HANDOFF COMMUNICATIONS IN A COMMUNICATION SYSTEM OPERATING ACCORDING TO MULTIPLE COMMUNICATION STANDARDS 审中-公开
    根据多种通信标准进行通信系统软交换通信的方法和装置

    公开(公告)号：WO0178240A3

    公开(公告)日：2002-07-04

    申请号：PCT/US0110210

    申请日：2001-03-30

    Applicant: MOTOROLA INC

    Inventor： JALLOUL LOUAY ,  TENBROOK KEITH A ,  CHEN JIANGNAN ,  ROTSTEIN RON ,  LUZ YUDA YEHUDA

    IPC: H04W36/14 ,  H04W36/18 ,  H04Q7/20

    CPC classification number: H04W36/18 ,  H04W36/0055 ,  H04W36/14 ,  H04W36/30

    Abstract: A soft handoff operation is provided for a first signal transmitted according to a first communication standard (IS-95B) and a second signal transmitted according to a second communication standard (IS-95C). A mobile station (MS) (204) receives the first signal, detects a pilot signal, measures pilot signal strength, and transmits a pilot strength measurement message. When the MS fails to receive a handoff direction message after transmitting the pilot strength message, the MS searches for a detecting presence of a broadcast control channel (BCCH) associated with a type IS-95C cell site (202) and measures a carrier-to-interference ratio of the BCCH. The MS compares the carrier-to-interference ratio to a threshold, and when the ratio is above the threshold, initiates a second communication according to the IS-95C standard, thus initiating a soft handoff operation and allowing cell sites (202, 203) to transmit information according to the IS-95C and IS-95B standards, respectively.

    Abstract translation: 提供根据第一通信标准（IS-95B）发送的第一信号和根据第二通信标准（IS-95C）发送的第二信号的软越区切换操作。 移动站（MS）（204）接收第一信号，检测导频信号，测量导频信号强度，并发送导频强度测量消息。 当MS在发送导频强度消息后未能接收到切换方向消息时，MS搜索与类型IS-95C小区站点（202）相关联的广播控制信道（BCCH）的检测存在，并测量载波到 - BCCH的干扰比。 MS将载波干扰比与阈值进行比较，当比率高于阈值时，根据IS-95C标准启动第二次通信，从而启动软切换操作，并允许小区站点（202,203） 分别根据IS-95C和IS-95B标准传输信息。

    MULTI CHANNEL STOP AND WAIT ARQ COMMUNICATION METHOD AND APPARATUS
    5.
    发明专利
    MULTI CHANNEL STOP AND WAIT ARQ COMMUNICATION METHOD AND APPARATUS 未知

    公开(公告)号：CA2391634C

    公开(公告)日：2007-09-11

    申请号：CA2391634

    申请日：2000-11-02

    Applicant: MOTOROLA INC

    Inventor： JALLOUL LOUAY ,  CLASSON BRIAN K ,  CUDAK MARK C ,  GHOSH AMITAVA

    IPC: H04L1/18 ,  H04L1/00 ,  H04L1/08 ,  H04Q7/38

    Abstract: A method in a communication system (100) includes transmitting from a source user (101) a first data packet (111) over a first time frame (121) having a finite time period (131), transmittin g from source user (101) a second data packet (112) over a second time frame (122) immediately subsequent to first time frame (121), detecting an acknowledgement of acceptable reception of data packet associated with either first or said second data packets (111 and 112), repeating transmission of first and second data packets (111 and 112) in a sequence of first and second time frames (121 and 122) in a time frame sequence (190) until the detection.

    7.
    发明专利
    未知

    公开(公告)号：DE69911642D1

    公开(公告)日：2003-10-30

    申请号：DE69911642

    申请日：1999-11-10

    Applicant: MOTOROLA INC

    Inventor： JALLOUL LOUAY ,  YOUSEF NABIL

    IPC: H04B1/7113 ,  H04L27/30 ,  H04B1/707

    Abstract: A method for determining an optimum number (Nopt) of complex samples for coherent averaging of a complex signal S(n) in a code division multiple access communication system includes estimating an initial number (Nint) of complex samples, obtaining fading channel autocorrelation sequence (R(n)) for a plurality (n) of complex samples, the plurality (n) number of complex samples corresponding to the initial number (Nint) of complex samples, computing a constant (K) based on the autocorrelation sequence (R(n)) and the plurality (n) of complex samples, substituting the initial number (Nint) of complex samples for the optimum number (Nopt) of complex samples if the constant (K) is equal or substantially equal to zero.

    8.
    发明专利
    未知

    公开(公告)号：BR0008223A

    公开(公告)日：2002-01-15

    申请号：BR0008223

    申请日：2000-02-15

    Applicant: MOTOROLA INC

    Inventor： CHEN JIANGNAN ,  JALLOUL LOUAY

    IPC: H04L1/00 ,  H04L5/02 ,  H04L25/49 ,  H04J13/00

    Abstract: A communication system provides a method and apparatus for interleaving data symbols of a block of data symbols (301) having data symbols from B(1) to B(n). The method and the accompanying apparatus include dividing block of data symbols (301) into a plurality of groups of data symbols (303 and 304). Each of the plurality of groups of data symbols (303, 304) includes data symbols equal in number to a fraction of data symbols B(1) through B(n), such as ½ and ⅓, such that the total number of data symbols in plurality of groups of data symbols (303, 304) substantially equals "n" data symbols. An interleaved block of data symbols (106) is formed by an alternating selection of data symbols from plurality groups of data symbols (303, 304). The alternating selection from each of plurality of groups of data symbols (303, 304) is according to either a forward addressing or a backward addressing mapping. A plurality of coded data symbols in a block of coded data symbols (104) is received for interleaving according to a single bit reversal interleaving function to form block of data symbols (301).

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