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    Synchronization of satellite and terrestrial broadcast ODFM signals
    1.
    发明授权
    Synchronization of satellite and terrestrial broadcast ODFM signals 有权
    卫星和地面广播ODFM信号的同步

    公开(公告)号：US08284826B2

    公开(公告)日：2012-10-09

    申请号：US11934684

    申请日：2007-11-02

    申请人： Leonard N. Schiff ,  William G. Ames

    发明人： Leonard N. Schiff ,  William G. Ames

    IPC分类号： H04B3/46

    CPC分类号： H04H20/18 ,  H04H20/67

    摘要： Synchronization of satellite and terrestrial broadcasts in a shared frequency arrangement is use in order to facilitate simultaneous reception of the broadcasts. A delay value is adjusted based on a synchronization between a first terrestrial broadcast and a satellite broadcast, and a delay value for a second terrestrial broadcast is adjusted based on a synchronization between the second terrestrial broadcast, the first terrestrial broadcast and the satellite broadcast. The adjustment of the relative delay values provides an improved reception pattern based on receipt of a shared frequency communication from multiple sources by improving a signal quality factor within at least selected regions of the coverage areas in which the relative delay values permit synchronization. This allows for synchronization lock between multiple substantially simultaneous broadcasts as determined by a cyclic prefix window of the broadcasts in overlapping coverage areas, useful for simultaneous satellite and terrestrial broadcasts using an OFDM format.

    摘要翻译： 使用共享频率安排中的卫星和地面广播的同步，以便于同时接收广播。 基于第一地面广播和卫星广播之间的同步来调整延迟值，并且基于第二地面广播，第一地面广播和卫星广播之间的同步来调整用于第二地面广播的延迟值。 相对延迟值的调整通过改善相对延迟值允许同步的覆盖区域的至少所选区域内的信号质量因子，基于从多个源接收到共享频率通信来提供改进的接收模式。 这允许在重叠覆盖区域中的广播的循环前缀窗口确定的多个基本上同时的广播之间的同步锁定，对于使用OFDM格式的同时卫星和地面广播是有用的。

    GROUND STATION ANTENNA ARRAY FOR AIR TO GROUND COMMUNICATION SYSTEM
    4.
    发明申请
    GROUND STATION ANTENNA ARRAY FOR AIR TO GROUND COMMUNICATION SYSTEM 审中-公开
    地面站天线阵列，用于空中接地通信系统

    公开(公告)号：US20120200458A1

    公开(公告)日：2012-08-09

    申请号：US13168623

    申请日：2011-06-24

    申请人： Ahmad Jalali ,  Mohammad A. Tassoudji ,  Ernest T. Ozaki ,  William G. Ames ,  Leonard N. Schiff

    发明人： Ahmad Jalali ,  Mohammad A. Tassoudji ,  Ernest T. Ozaki ,  William G. Ames ,  Leonard N. Schiff

    IPC分类号： H01Q3/00

    CPC分类号： H04W52/241 ,  H01Q1/2291 ,  H01Q1/246 ,  H01Q1/28 ,  H01Q3/24 ,  H01Q3/26 ,  H01Q13/02 ,  H01Q21/062 ,  H01Q21/205 ,  H01Q25/00 ,  H04B7/18506 ,  H04W84/005

    摘要： A ground station antenna array includes a first array of antenna elements. A second array of antenna elements are vertically aligned with the first array of antenna elements. The first array of antenna elements and the second array of antenna elements are coupled to the digital beam forming circuitry and each cover a same sector of azimuth; the first array of antenna elements only covering a first elevation; the second array of antenna elements only covering a second lower elevation. The digital beam forming circuitry directs a radiation pattern of the first array of antenna elements in a first range of elevation angles, and directs a radiation pattern of the second array of antenna elements in a second range of elevation angles. The second array of antenna elements has higher gain than the first array. A respective transceiver is coupled to respective antenna elements of the first and second arrays.

    摘要翻译： 地面站天线阵列包括天线元件的第一阵列。 天线元件的第二阵列与天线元件的第一阵列垂直对准。 天线元件的第一阵列和第二天线元件阵列耦合到数字波束形成电路，并且每个覆盖相同的方位角; 天线元件的第一阵列仅覆盖第一高度; 天线元件的第二阵列仅覆盖第二较低高度。 数字波束形成电路在第一仰角范围内引导天线元件的第一阵列的辐射图案，并且在第二仰角范围内引导天线元件的第二阵列的辐射图。 天线元件的第二阵列具有比第一阵列更高的增益。 相应的收发器耦合到第一和第二阵列的相应天线元件。

    System and method for reducing call dropping rates in a multi-beam communication system
    5.
    发明授权
    System and method for reducing call dropping rates in a multi-beam communication system 失效
    用于降低多光束通信系统中的呼叫丢弃率的系统和方法

    公开(公告)号：US06208858B1

    公开(公告)日：2001-03-27

    申请号：US09120857

    申请日：1998-07-21

    申请人： Franklin P. Antonio ,  Gene W. Marsh ,  Richard A. Stewart ,  Marie M. Bjerede ,  Ananthanarayanan Chockalingam ,  Arthur S. Kerns ,  Brian Butler ,  Matthew S. Grob ,  James T. Determan ,  Douglas Grover ,  Leonard N. Schiff ,  William G. Ames

    发明人： Franklin P. Antonio ,  Gene W. Marsh ,  Richard A. Stewart ,  Marie M. Bjerede ,  Ananthanarayanan Chockalingam ,  Arthur S. Kerns ,  Brian Butler ,  Matthew S. Grob ,  James T. Determan ,  Douglas Grover ,  Leonard N. Schiff ,  William G. Ames

    IPC分类号： H04Q720

    CPC分类号： H04B7/18534

    摘要： A method for reducing call dropping rates in a multi-beam communication system. The multi-beam communication system includes a user terminal, a gateway, and a plurality of beam sources, where each beam source projects a plurality of beams, and where a communication link between the user terminal and the gateway is established on one or more beams. The method according to the present invention relies on a messaging protocol between the gateway and the user terminal. Based on messages sent from the user terminal to the gateway, preferably on a preselected periodic basis, the gateway can determine the more desirable beam(s) for transmitting data or information to the user terminal. The messages sent from the user terminal to the gateway contain values representing beam strengths as measured at the user terminal. The gateway uses the user terminal measured beam strengths to select the beams that should be used for transmitting data or information to the user terminal. The beams that should be used are the beams that if used will decrease the call dropping rates and provide a desired level of beam source diversity.

    摘要翻译： 一种用于在多光束通信系统中降低呼叫丢弃率的方法。 多波束通信系统包括用户终端，网关和多个波束源，其中每个波束源投射多个波束，并且在一个或多个波束上建立用户终端和网关之间的通信链路 。 根据本发明的方法依赖于网关与用户终端之间的消息协议。 基于从用户终端发送到网关的消息，优选地以预选的周期性基础，网关可以确定用于向用户终端发送数据或信息的更理想的波束。 从用户终端发送到网关的消息包含表示在用户终端测量的波束强度的值。 网关使用用户终端测量的光束强度来选择应用于向用户终端发送数据或信息的光束。 应该使用的波束是如果使用的波束将降低呼叫丢弃率并提供期望的波束源分集水平。

    High data rate aircraft to ground communication antenna system
    7.
    发明授权
    High data rate aircraft to ground communication antenna system 有权
    高数据速率飞机到地面通信天线系统

    公开(公告)号：US08676192B2

    公开(公告)日：2014-03-18

    申请号：US13168538

    申请日：2011-06-24

    申请人： Ahmad Jalali ,  Mohammad A. Tassoudji ,  Ernest T. Ozaki ,  William G. Ames ,  Leonard N. Schiff

    发明人： Ahmad Jalali ,  Mohammad A. Tassoudji ,  Ernest T. Ozaki ,  William G. Ames ,  Leonard N. Schiff

    IPC分类号： H04W4/00

    CPC分类号： H04W52/241 ,  H01Q1/2291 ,  H01Q1/246 ,  H01Q1/28 ,  H01Q3/24 ,  H01Q3/26 ,  H01Q13/02 ,  H01Q21/062 ,  H01Q21/205 ,  H01Q25/00 ,  H04B7/18506 ,  H04W84/005

    摘要： A method for ground to air communication includes receiving a first pilot signal on a first wide beam from a first ground base station by a first antenna element covering a first range of azimuth angles from an aircraft. Data is received on a directed data beam from the first ground base station by the first antenna element. A second pilot signal is received on a second wide beam from a second ground base station by a second antenna element covering a second range of azimuth angles different than the first range of azimuth angles. A signal strength of the second pilot signal is compared with a signal strength of the first pilot signal. Data reception is switched from the first antenna element to the second antenna element if the signal strength of the second pilot signal is greater than the signal strength of the first pilot signal.

    摘要翻译： 一种用于地对空通信的方法包括：通过第一天线元件从第一地面基站接收来自飞机的第一方位角范围的第一宽波束上的第一导频信号。 通过第一天线元件在来自第一地面基站的有向数据波束上接收数据。 第二导频信号通过第二天线元件在第二地面基站的第二宽波束上被接收，该第二天线元件覆盖与第一方位角范围不同的第二方位角范围。 将第二导频信号的信号强度与第一导频信号的信号强度进行比较。 如果第二导频信号的信号强度大于第一导频信号的信号强度，则数据接收从第一天线元件切换到第二天线元件。

    HIGH DATA RATE AIRCRAFT TO GROUND COMMUNICATION ANTENNA SYSTEM
    8.
    发明申请
    HIGH DATA RATE AIRCRAFT TO GROUND COMMUNICATION ANTENNA SYSTEM 有权
    高数据速率飞机到地面通信天线系统

    公开(公告)号：US20120202430A1

    公开(公告)日：2012-08-09

    申请号：US13168538

    申请日：2011-06-24

    申请人： Ahmad Jalali ,  Mohammad A. Tassoudji ,  Ernest T. Ozaki ,  William G. Ames ,  Leonard N. Schiff

    发明人： Ahmad Jalali ,  Mohammad A. Tassoudji ,  Ernest T. Ozaki ,  William G. Ames ,  Leonard N. Schiff

    IPC分类号： H04B15/00 ,  H04B7/00 ,  H04W52/04 ,  H01Q3/00

    CPC分类号： H04W52/241 ,  H01Q1/2291 ,  H01Q1/246 ,  H01Q1/28 ,  H01Q3/24 ,  H01Q3/26 ,  H01Q13/02 ,  H01Q21/062 ,  H01Q21/205 ,  H01Q25/00 ,  H04B7/18506 ,  H04W84/005

    摘要： A method for ground to air communication includes receiving a first pilot signal on a first wide beam from a first ground base station by a first antenna element covering a first range of azimuth angles from an aircraft. Data is received on a directed data beam from the first ground base station by the first antenna element. A second pilot signal is received on a second wide beam from a second ground base station by a second antenna element covering a second range of azimuth angles different than the first range of azimuth angles. A signal strength of the second pilot signal is compared with a signal strength of the first pilot signal. Data reception is switched from the first antenna element to the second antenna element if the signal strength of the second pilot signal is greater than the signal strength of the first pilot signal.

    摘要翻译： 一种用于地对空通信的方法包括：通过第一天线元件从第一地面基站接收来自飞机的第一方位角范围的第一宽波束上的第一导频信号。 通过第一天线元件在来自第一地面基站的有向数据波束上接收数据。 第二导频信号通过第二天线元件在第二地面基站的第二宽波束上被接收，该第二天线元件覆盖与第一方位角范围不同的第二方位角范围。 将第二导频信号的信号强度与第一导频信号的信号强度进行比较。 如果第二导频信号的信号强度大于第一导频信号的信号强度，则数据接收从第一天线元件切换到第二天线元件。

    System and method for reducing call dropping rates in a multi-beam communication system
    10.
    发明授权
    System and method for reducing call dropping rates in a multi-beam communication system 有权
    用于降低多光束通信系统中的呼叫丢弃率的系统和方法

    公开(公告)号：US06714780B1

    公开(公告)日：2004-03-30

    申请号：US09722001

    申请日：2001-06-12

    申请人： Franklin P. Antonio ,  Gene W. Marsh ,  Richard A. Stewart ,  Marie M. Bjerede ,  Ananthanarayanan Chockalingam ,  Arthur S. Kerns ,  Brian Butler ,  Matthew S. Grob ,  James T. Determan ,  Douglas Grover ,  Leonard N. Schiff ,  William G. Ames

    发明人： Franklin P. Antonio ,  Gene W. Marsh ,  Richard A. Stewart ,  Marie M. Bjerede ,  Ananthanarayanan Chockalingam ,  Arthur S. Kerns ,  Brian Butler ,  Matthew S. Grob ,  James T. Determan ,  Douglas Grover ,  Leonard N. Schiff ,  William G. Ames

    IPC分类号： H04Q720

    CPC分类号： H04B7/18534

    摘要： A method for reducing call dropping rates in a multi-beam communication system. The multi-beam communication system includes a user terminal, a gateway, and a plurality of beam sources, where each beam source projects a plurality of beams, and where a communication link between the user terminal and the gateway is established on one or more beams. The method according to the present invention relies on a messaging protocol between the gateway and the user terminal. Based on messages sent from the user terminal to the gateway, preferably on a preselected periodic basis, the gateway can determine the more desirable beam(s) for transmitting data or information to the user terminal. The messages sent from the user terminal to the gateway contain values representing beam strengths as measured at the user terminal. The gateway uses the user terminal measured beam strengths to select the beams that should be used for transmitting data or information to the user terminal. The beams that should be used are the beams that if used will decrease the call dropping rates and provide a desired level of beam source diversity.

    摘要翻译： 一种用于在多光束通信系统中降低呼叫丢弃率的方法。 多波束通信系统包括用户终端，网关和多个波束源，其中每个波束源投射多个波束，并且在一个或多个波束上建立用户终端和网关之间的通信链路 。 根据本发明的方法依赖于网关与用户终端之间的消息协议。 基于从用户终端发送到网关的消息，优选地以预选的周期性基础，网关可以确定用于向用户终端发送数据或信息的更理想的波束。 从用户终端发送到网关的消息包含表示在用户终端测量的波束强度的值。 网关使用用户终端测量的光束强度来选择应用于向用户终端发送数据或信息的光束。 应该使用的波束是如果使用的波束将降低呼叫丢弃率并提供期望的波束源分集水平。