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29 条记录 (耗时 0.036 秒)

    Induced cellular communications handover
    1.
    发明授权
    Induced cellular communications handover 有权
    诱导的蜂窝通信切换

    公开(公告)号：US07558569B2

    公开(公告)日：2009-07-07

    申请号：US10887798

    申请日：2004-07-09

    申请人： Ming U. Chang ,  John G. Himes ,  Marvin D. Swensen

    发明人： Ming U. Chang ,  John G. Himes ,  Marvin D. Swensen

    IPC分类号： H04W40/00

    CPC分类号： H04B7/18506 ,  H04W48/02 ,  H04W84/005 ,  H04W84/02 ,  H04W84/06

    摘要： A wireless communications system and method provides wireless communications service for user equipment on board an aircraft. The aircraft includes on-board system equipment for supporting the wireless communications service with on-board user equipment. One or more ground stations are used for communicating with the aircraft using a plurality of feeder links for exchanging the wireless communications service's traffic and control information with the on-board system equipment, and for providing interfaces with a terrestrial telecommunications infrastructure. The on-board system equipment transitions connections by the on-board user equipment between the feeder links.

    摘要翻译： 无线通信系统和方法为飞机上的用户设备提供无线通信服务。 飞机包括车载系统设备，用于支持无线通信服务与车载用户设备。 一个或多个地面站用于使用多个馈线链路与飞机通信，用于与车载系统设备交换无线通信服务的业务和控制信息，并且用于提供与地面电信基础设施的接口。 车载系统设备通过车载用户设备在馈线链路之间转换连接。

    Application of complex codes to maximize user link utilization
    3.
    发明授权
    Application of complex codes to maximize user link utilization 有权
    应用复杂的代码来最大限度地提高用户链接利用率

    公开(公告)号：US07245599B2

    公开(公告)日：2007-07-17

    申请号：US09945483

    申请日：2001-08-31

    申请人： Ying J. Feria ,  Donald C. D. Chang ,  Ming U. Chang

    发明人： Ying J. Feria ,  Donald C. D. Chang ,  Ming U. Chang

    IPC分类号： H04B7/216

    CPC分类号： H04J13/0048 ,  H04B7/216 ,  H04J13/12 ,  H04J2013/0037

    摘要： A method of increasing utilization of user link bandwidth for a code division multiple access communications system is disclosed that includes the steps of selecting a set of orthogonal complex codes each having a code length that is greater than a code length of an optimum real code and less than or equal to a spreading code length; and transferring symbols across at least one of a plurality of user links to or from at least one of a corresponding plurality of user terminals wherein the symbols are represented by a corresponding one of the set of orthogonal complex codes.

    摘要翻译： 公开了一种增加用于码分多址通信系统的用户链路带宽利用率的方法，该方法包括以下步骤：选择一组正交复数码，每一组码的码长大于最佳实码的码长， 大于或等于扩展码长度; 以及将多个用户链路中的至少一个用户链路中的符号传送到或从对应的多个用户终端中的至少一个传送符号，其中，所述符号由所述一组正交复合码表示。

    Multi-node wireless communication system with multiple transponding platforms
    5.
    发明授权
    Multi-node wireless communication system with multiple transponding platforms 有权
    具有多个反应平台的多节点无线通信系统

    公开(公告)号：US07089000B1

    公开(公告)日：2006-08-08

    申请号：US09584012

    申请日：2000-05-30

    申请人： Ming U. Chang ,  Kar W. Yung ,  Frank A. Hagen ,  Donald C. D. Chang

    发明人： Ming U. Chang ,  Kar W. Yung ,  Frank A. Hagen ,  Donald C. D. Chang

    IPC分类号： H04Q7/20

    CPC分类号： H04B7/18534

    摘要： A mobile wireless communications system including a plurality of individual transponding platforms all in communication with a central processing hub. A signal processed by the central processing hub is radiated simultaneously through multiple paths to a plurality of the individual transponding platforms. The signal transmitted to each transponding platform by the hub is appropriately delayed by the hub so as to equalize the differential delay of all such signals from a given receiver location. The radiated signal is then re-radiated by each of the plurality of individual transponding platforms to a mobile satellite terminal that receives the re-radiated signal from the plurality of individual transponding platforms. The signals from the plurality of transponding platforms are all received coherently by the intended user, and incoherently by all other users.

    摘要翻译： 一种移动无线通信系统，包括与中央处理集线器通信的多个单独的转发平台。 由中央处理集线器处理的信号同时通过多个路径被辐射到多个单独的转发平台。 由集线器传输到每个转发平台的信号由集线器适当地延迟，以便均衡来自给定接收机位置的所有这些信号的差分延迟。 然后，辐射信号被多个单独的转发平台中的每一个重新辐射到从多个单独的转发平台接收再发射信号的移动卫星终端。 来自多个转发平台的信号都被预期用户相干接收，并且被所有其他用户不连贯地接收。

    Techniques for utilization of bandwidth space assets
    6.
    发明授权
    Techniques for utilization of bandwidth space assets 有权
    利用带宽空间资产的技术

    公开(公告)号：US06606307B1

    公开(公告)日：2003-08-12

    申请号：US09432439

    申请日：1999-11-02

    申请人： Donald C. D. Chang ,  Kar W. Yung ,  David C. Cheng ,  Urban A. Von Der Embse ,  John I. Novak, III ,  Frank A. Taormina ,  Ming U. Chang

    发明人： Donald C. D. Chang ,  Kar W. Yung ,  David C. Cheng ,  Urban A. Von Der Embse ,  John I. Novak, III ,  Frank A. Taormina ,  Ming U. Chang

    IPC分类号： H04B7185

    CPC分类号： H04B7/18521

    摘要： Methods for operating a satellite constellation are disclosed that utilize spatial diversity and directional gain antennas at ground terminal locations to provide multiple data rate services on a single frequency channel. One method comprises receiving a signal at a first and second satellite in the satellite constellation from a first communications device. A communications channel at a first frequency from the first satellite is used to communicate with the first communications device. A signal from a second communications device is received only at the second satellite at the first frequency, and the second satellite is used to communicate with the second communications device at the first frequency without substantially interfering with the communications with the first communications device.

    摘要翻译： 公开了用于操作卫星星座的方法，其利用地面终端位置处的空间分集和方向增益天线在单个频率信道上提供多个数据速率业务。 一种方法包括从第一通信设备在卫星星座中的第一和第二卫星处接收信号。 来自第一卫星的第一频率的通信信道被用于与第一通信设备进行通信。 来自第二通信设备的信号仅在第一频率处在第二卫星处被接收，并且第二卫星被用于以第一频率与第二通信设备通信，而基本上不干扰与第一通信设备的通信。

    Multiple basestation communication system having adaptive antennas
    9.
    发明授权
    Multiple basestation communication system having adaptive antennas 有权
    具有自适应天线的多个基站通信系统

    公开(公告)号：US07187949B2

    公开(公告)日：2007-03-06

    申请号：US09858956

    申请日：2001-05-15

    申请人： Donald C. D. Chang ,  Wah L. Lim ,  Ming U. Chang

    发明人： Donald C. D. Chang ,  Wah L. Lim ,  Ming U. Chang

    IPC分类号： H04M1/00

    CPC分类号： H04W16/28 ,  H01Q1/246 ,  H01Q3/2605 ,  H01Q25/00 ,  H04B7/0408 ,  H04W16/26 ,  H04W84/14 ,  H04W88/085

    摘要： A communication system has a first plurality of wireless basestations having adaptive antennas with a plurality of main array antenna elements for generating a plurality of communication beams. The system further includes a gateway station coupled to the first plurality of wireless basestations. The gateway station forms a plurality of beam commands by communicating a plurality of control signals to the first plurality of wireless basestations to form the communication beams. A second plurality of wireless base stations having a second plurality of adaptive antennas with a second plurality of main array antenna elements for generating a plurality of communication beams to communicate with said mobile user and a fixed user. The beams include a first link and a second link from the first plurality of basestations that communicate with the fixed user terminal and a third link and fourth link from the second plurality of wireless basestations to communicate with the mobile user terminal.

    摘要翻译： 通信系统具有第一多个无线基站，其具有多个主阵列天线元件的自适应天线，用于产生多个通信波束。 系统还包括耦合到第一多个无线基站的网关站。 网关站通过将多个控制信号传送到第一多个无线基站来形成多个波束命令，以形成通信波束。 具有第二多个自适应天线的第二多个无线基站，具有第二多个主阵列天线元件，用于产生与所述移动用户和固定用户通信的多个通信波束。 波束包括来自与固定用户终端通信的第一多个基站的第一链路和第二链路，以及来自第二多个无线基站的第三链路和第四链路以与移动用户终端通信。