Method for assigning variable-length walsh codes for code division multiple access communications systems

    公开(公告)号:AU2002363940A8

    公开(公告)日:2003-06-17

    申请号:AU2002363940

    申请日:2002-11-21

    Applicant: MOTOROLA INC

    Abstract: Modulation codes for code division multiple access (CDMA) cellular communications systems that are mutually orthogonal may be generated as a sequence of Walsh codes. A method of assigning Walsh codes includes the steps of ( 404 ) receiving as input a status vector ( 200 ) for a Walsh code system of length 2 n and a selected Walsh code length j=2 n-k ; ( 406 )-( 418 ) creating a new status vector for a selected Walsh code length of j from the status vector; ( 416 ) creating a search mask for the selected Walsh code length j; ( 418 ) creating a search sequence for the selected Walsh code length j; and ( 434 )-( 442 ) searching the search sequence for the next available Walsh code. The status vector is updated ( 500 ) to track the assignment and release of each Walsh code of each Walsh code length in the Walsh code system.

    METHOD FOR ASSIGNING VARIABLE-LENGTH WALSH CODES FOR CODE DIVISION MULTIPLE ACCESS COMMUNICATIONS SYSTEMS

    公开(公告)号:AU2002363940A1

    公开(公告)日:2003-06-17

    申请号:AU2002363940

    申请日:2002-11-21

    Applicant: MOTOROLA INC

    Abstract: Modulation codes for code division multiple access (CDMA) cellular communications systems that are mutually orthogonal may be generated as a sequence of Walsh codes. A method of assigning Walsh codes includes the steps of ( 404 ) receiving as input a status vector ( 200 ) for a Walsh code system of length 2 n and a selected Walsh code length j=2 n-k ; ( 406 )-( 418 ) creating a new status vector for a selected Walsh code length of j from the status vector; ( 416 ) creating a search mask for the selected Walsh code length j; ( 418 ) creating a search sequence for the selected Walsh code length j; and ( 434 )-( 442 ) searching the search sequence for the next available Walsh code. The status vector is updated ( 500 ) to track the assignment and release of each Walsh code of each Walsh code length in the Walsh code system.

    METHOD FOR ASSIGNING VARIABLE-LENGTH WALSH CODES FOR CODE DIVISION MULTIPLE ACCESS COMMUNICATIONS SYSTEMS
    4.
    发明申请
    METHOD FOR ASSIGNING VARIABLE-LENGTH WALSH CODES FOR CODE DIVISION MULTIPLE ACCESS COMMUNICATIONS SYSTEMS 审中-公开
    用于分配代码分配多址接入通信系统的可变长度沃尔什码的方法

    公开(公告)号:WO03049226A9

    公开(公告)日:2003-10-30

    申请号:PCT/US0237285

    申请日:2002-11-21

    Applicant: MOTOROLA INC

    CPC classification number: H04J13/0048 H04J13/18

    Abstract: Modulation codes for code division multiple access (CDMA) cellular communications systems that are mutually orthogonal may be generated as a sequence of Walsh codes. A method of assigning Walsh codes includes the steps of (404) receiving as input a status vector (200) for a Walsh code system of length 2n and a selected Walsh code length j = 2n-k; (406) - (418) creating a new status vector for a selected Walsh code length of j from the status vector; (416) creating a search mask for the selected Walsh code length j; (418) creating a search sequence for the selected Walsh code length j; and (434) - (442) searching the search sequence for the next available Walsh code. The status vector is updated (500) to track the assignment and release of each Walsh code of each Walsh code length in the Walsh code system.

    Abstract translation: 用于码分多址(CDMA)蜂窝通信系统的相互正交的调制码可以作为沃尔什码的序列来生成。 分配沃尔什码的方法包括以下步骤:(404)接收长度为2n并且选择的沃尔什码长度为j = 2n-k的沃尔什码系统的状态向量(200)作为输入; (406) - (418)从所述状态向量为所选择的沃尔什码长度j创建新的状态向量; (416)为所选沃尔什码长j创建搜索掩码; (418)为所选沃尔什码长j创建搜索序列; 和(434) - (442)在搜索序列中搜索下一个可用沃尔什码。 状态向量被更新(500)以跟踪沃尔什码系统中每个沃尔什码长的每个沃尔什码的分配和释放。

    METHOD FOR PERFORMING CALL ORIGINATION WITHIN A COMMUNICATION SYSTEM
    8.
    发明申请
    METHOD FOR PERFORMING CALL ORIGINATION WITHIN A COMMUNICATION SYSTEM 审中-公开
    在通信系统中执行呼叫初始化的方法

    公开(公告)号:WO0230142A2

    公开(公告)日:2002-04-11

    申请号:PCT/US0129272

    申请日:2001-09-18

    Applicant: MOTOROLA INC

    CPC classification number: H04W48/14 H04W36/08 H04W76/02

    Abstract: After a base station (101) receives a call origination message from a remote unit (113), the base station determines (101) those base stations (101-103) that are capable of supporting communication with the remote unit (113). The eligible base stations (eligible set) are instructed to "listen" for communication from the remote unit (113), and the remote unit (113) is provided the eligible set. Once the remote unit (113) receives the eligible set of base stations, the remote unit then determines the base station (103) having the best radio environment characteristics, and begins communication with the base station (103).

    Abstract translation: 在基站(101)从远程单元(113)接收到呼叫发起消息之后,基站确定(101)能够支持与远程单元(113)通信的那些基站(1011-103)。 指示符合条件的基站(合格集合)从远程单元(113)“收听”通信,并且向远程单元(113)提供符合条件的集合。 一旦远程单元(113)接收到合格的基站集合,则远程单元然后确定具有最佳无线电环境特性的基站(103),并开始与基站(103)的通信。

    WIRELESS COMMUNICATION MANAGEMENT SYSTEM AND SUPPORTING METHOD AND APPARATUS
    9.
    发明申请
    WIRELESS COMMUNICATION MANAGEMENT SYSTEM AND SUPPORTING METHOD AND APPARATUS 审中-公开
    无线通信管理系统和支持方法和设备

    公开(公告)号:WO2006065423A3

    公开(公告)日:2007-01-18

    申请号:PCT/US2005041404

    申请日:2005-11-14

    CPC classification number: H04W36/30 H04B17/318 H04W36/18

    Abstract: Wireless communication system (10) management has been provided with a filtering threshold (34) to trigger events to control handovers of mobile stations (12, 14). In a non-active set base station process, it is determined (106) whether a base station signal strength measurement in a non-active set of a mobile station is less than the filtering threshold (34). If not, the predefined event is executed (108). Otherwise, the signal strength measurement is ignored (112). For an active set base station process, it is determined (206) whether a signal strength measurement of a base station in the active set of the mobile station is less than the filtering threshold (34). If not, the signal strength measurement is compared (212) to an event threshold. The signal strength measurement of the base station is ignored (214) when the signal strength measurement is not less than the event threshold.

    Abstract translation: 无线通信系统(10)管理已经被提供有过滤阈值(34)以触发事件来控制移动站(12,14)的切换。 在非活动集基站处理中,确定(106)移动台的非活动组中的基站信号强度测量是否小于过滤阈值(34)。 如果不是,则执行预定义事件(108)。 否则,信号强度测量被忽略(112)。 对于有源集合基站处理,确定(206)移动站的活动集中的基站的信号强度测量是否小于过滤阈值(34)。 如果不是,将信号强度测量与事件阈值进行比较(212)。 当信号强度测量不小于事件阈值时,基站的信号强度测量被忽略(214)。

    METHOD AND APPARATUS FOR PERFORMING A SOFT-HANDOFF
    10.
    发明申请
    METHOD AND APPARATUS FOR PERFORMING A SOFT-HANDOFF 审中-公开
    用于执行软交换的方法和装置

    公开(公告)号:WO2004105288A3

    公开(公告)日:2005-03-24

    申请号:PCT/US2004014666

    申请日:2004-05-11

    CPC classification number: H04W36/18 H04W36/30

    Abstract: A mobile station typically determines whether to drop a communication link and/or a base transceiver station (BTS) based on a performance of an associated forward link. In order to avoid dropping a communication link (220) that has a weak forward link (222) but a strong reverse link (224), a communication system is provided that determines whether the reverse link is still good before determining to drop the communication link (220). In one embodiment, the communication system determines whether reverse link (224) is still good based on a quality metric associated with the reverse link and quality metric(s) associated with one or more other reverse links (234) that are in a soft-hand-off mode with reverse link. In another embodiment, the communication system determines whether reverse link (224) is still good by comparing a quality metric associated with the reverse link to a threshold.

    Abstract translation: 移动台通常基于相关联的前向链路的性能来确定是否丢弃通信链路和/或基站收发器(BTS)。 为了避免丢弃具有弱向前链路(222)但是强反向链路(224)的通信链路(220),提供通信系统,其在确定丢弃通信链路之前确定反向链路是否仍然良好 (220)。 在一个实施例中,通信系统基于与反向链路相关联的质量度量和与一个或多个其他反向链路(234)相关联的质量度量来确定反向链路(224)是否仍然良好, 切换模式与反向链路。 在另一个实施例中,通信系统通过将与反向链路相关联的质量度量与阈值进行比较来确定反向链路(224)是否仍然良好。

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