Train location and control using spread spectrum radio communications
    1.
    发明授权
    Train location and control using spread spectrum radio communications 失效
    列车位置和控制使用扩频无线电通信

    公开(公告)号:US5420883A

    公开(公告)日:1995-05-30

    申请号:US63097

    申请日:1993-05-17

    摘要: Communication devices and communication network techniques are employed to meet safety-critical, operational requirements for train location and control in railroad and public transit applications. On-board and trackside communication radios participate in a synchronous, time-slotted communication network, providing contentionless and highly responsive access to all participants. Encrypted, validated, and error protected communication links provide reliable and redundant transfer of information among the train, trackside, and control station radios. Spread spectrum communication techniques enable range measurements between all participants. These wireless communication links relay train range measurements to control or processing stations and relay control information (principally speed commands) from the processing stations to the trains. High resolution position location is determined along elevated, at-grade, and in-tunnel tracks using wireless methods and sparse device placement.

    摘要翻译: 采用通信设备和通信网络技术,以满足铁路和公共交通应用中火车定位和控制的安全关键,操作要求。 车载通信无线电和轨道通信无线电参与同步的时隙通信网络,为所有参与者提供无竞争力和高度响应的访问。 加密,验证和错误保护的通信链路在列车,轨道旁路和控制站无线电之间提供可靠和冗余的信息传输。 扩频通信技术可以在所有参与者之间进行范围测量。 这些无线通信链路中继列车范围测量以控制或处理站,并且将处理站到列车的控制信息(主要是速度命令)中继。 高分辨率位置位置是通过使用无线方法和稀疏设备放置在高架,等级和隧道轨道上确定的。

    Aircraft based cellular system
    2.
    发明授权
    Aircraft based cellular system 有权
    基于飞机的蜂窝系统

    公开(公告)号:US07715838B2

    公开(公告)日:2010-05-11

    申请号:US10405280

    申请日:2003-04-02

    IPC分类号: H04W40/00

    摘要: An apparatus and method for providing an aircraft-based wireless communications service is disclosed. An exemplary system includes a plurality of aircraft each including on-board equipment for supporting wireless communications with one or more dual mode handsets and for exchanging wireless communication traffic and control information. One or more ground stations communicate with the plurality of commercial aircraft using feeder communications links exchanging the wireless communication traffic and control information and providing interfaces with a terrestrial telecommunications infrastructure. A control center manages the one or more ground stations and the on-board equipment of the commercial aircraft and dynamically assigns resources to the on-board equipment of the plurality of aircraft using an overlapped set of coverage patterns.

    摘要翻译: 公开了一种用于提供基于飞机的无线通信服务的装置和方法。 一个示例性系统包括多个飞机,每个飞机包括用于支持与一个或多个双模式手机的无线通信并用于交换无线通信业务和控制信息的车载设备。 一个或多个地面站使用馈送通信链路与多个商用飞机通信,交换无线通信业务和控制信息并提供与地面电信基础设施的接口。 控制中心管理一个或多个地面站和商用飞机的车载设备,并使用重叠的覆盖模式动态地将资源分配给多个飞行器的车载设备。

    Platform-associated visitor location registers (VLR) for cellular communications
    3.
    发明授权
    Platform-associated visitor location registers (VLR) for cellular communications 有权
    用于蜂窝通信的平台相关访客位置寄存器(VLR)

    公开(公告)号:US07359700B2

    公开(公告)日:2008-04-15

    申请号:US10888217

    申请日:2004-07-09

    IPC分类号: H04Q7/20

    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. A mobile switching center manages the ground stations and the on-board system equipment of the aircraft, wherein the mobile switching center includes at least one platform visitor location register (VLR) associated with each aircraft to ensure proper registration and tracking of the user equipment used on board the aircraft.

    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。 移动交换中心管理飞机的地面站和车载系统设备,其中移动交换中心包括与每个飞机相关联的至少一个平台访问者位置寄存器(VLR),以确保所使用的用户设备的正确注册和跟踪 在飞机上。

    Induced cellular communications handover
    4.
    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

    IPC分类号: H04W40/00

    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。

    GPS global coverage augmentation system
    5.
    发明申请
    GPS global coverage augmentation system 审中-公开
    GPS全球覆盖增强系统

    公开(公告)号:US20080316093A1

    公开(公告)日:2008-12-25

    申请号:US11819115

    申请日:2007-06-25

    IPC分类号: H04B7/185

    CPC分类号: G01S19/08 G01S19/07

    摘要: A method and apparatus for efficiently obtaining improved coverage in augmenting GPS position location with differential GPS integrity and correction messages using existing satellite systems, planned satellite systems, or a combination of both to broadcast these integrity and correction messages without requiring dedicated satellite resources. At least one existing satellite system offers full global coverage whereas the conventional approach of disseminating these integrity and correction messages using geostationary satellites necessarily omits Polar Regions. This existing satellite system also provides redundant coverage globally whereas the conventional approach using geostationary satellites must increase the number of geostationary satellites in direct proportion to the level of redundancy desired. At least one other existing satellite-based system offers higher availability (i.e., more geographically complete) coverage with these integrity and correction message by also employing ground-based transmitters to gain three way redundant coverage. Using existing or planned satellite systems to broadcast differential GPS integrity and correction messages also eliminates the expense and delays associated with building and launching either dedicated geostationary satellites or dedicated satellite payloads on host satellites. Using available satellite resources also enables cost efficient customization of disseminated integrity and correction messages. The apparatus comprises a set of ground reference stations with individual assigned geographic spaces, a master station that gathers integrity and correction messages from these ground reference stations and transmits them to a satellite-based system or systems that broadcast integrity and correction messages, possibly customized, and users with equipment capable of receiving signals from the satellite system.

    摘要翻译: 一种用于利用现有卫星系统,计划卫星系统或两者的组合在差分GPS完整性和校正消息中增强GPS位置定位的方法和装置,以便在不需要专用卫星资源的情况下广播这些完整性和校正消息。 至少有一个现有的卫星系统提供全面的全球覆盖,而使用地球静止卫星传播这些完整性和校正信息的传统方法必然会省略极地地区。 这种现有的卫星系统也在全球范围内提供了冗余覆盖,而使用对地静止卫星的传统方法必须与所需冗余度成正比地增加对地静止卫星的数量。 至少一个其他现有的基于卫星的系统通过还使用基于地面的发射机来获得三路冗余覆盖来提供具有这些完整性和校正消息的更高的可用性(即,更地理上完整的)覆盖。 使用现有或计划中的卫星系统广播差分GPS完整性和纠正信息,也消除了在主机卫星上建立和发射专用对地静止卫星或专用卫星有效载荷的费用和延误。 使用可用的卫星资源还可以实现成本效益的传播完整性和纠正信息的定制。 该设备包括一组具有单独分配的地理空间的地面参考站,主站,其收集来自这些地面参考站的完整性和校正消息,并将其发送到基于卫星的系统或可能定制的广播完整性和校正消息的系统, 以及能够从卫星系统接收信号的设备的用户。

    Platform position location and control
    6.
    发明授权
    Platform position location and control 有权
    平台位置和控制

    公开(公告)号:US07136016B1

    公开(公告)日:2006-11-14

    申请号:US11130007

    申请日:2005-05-16

    IPC分类号: G01S3/02

    摘要: A method and apparatus for determining and tracking the geodetic position of a mobile platform (i.e., aircraft). The apparatus comprises a ground controller assigned to a geographic space (i.e., an airspace) and at least one mobile platform (i.e., aircraft) communicating with the ground controller on a bi-directional communications link, wherein each mobile platform (i.e., aircraft) transmits a mobile platform (i.e., an aircraft) signal comprising at least a time of transmission of the mobile platform (i.e., aircraft) signal; the ground controller transmits a ground signal comprising at least a time of transmission of the ground signal and a location of the ground controller; each mobile platform (i.e., aircraft) performs time-of-arrival (TOA) measurements on the mobile platform (i.e., aircraft) signals received by that mobile platform (i.e., aircraft) and also performs TOA measurements on the ground signal received by that mobile platform (i.e., aircraft); the ground controller performs TOA measurements on each of the mobile platform (i.e., aircraft) signals received by the ground controller; each mobile platform (i.e., aircraft) determines a range (i.e., an air range) between that mobile platform (i.e., aircraft) and other mobile platforms (i.e., aircraft) and a ground range between that mobile platform (i.e., aircraft) and the ground controller; each mobile platform (i.e., aircraft) determines its geodetic position based on at least the ranges (i.e., air ranges) and ground range for that mobile platform (i.e., aircraft) and the position of the ground controller.

    摘要翻译: 一种用于确定和跟踪移动平台(即飞行器)的大地测位置的方法和装置。 该装置包括分配给地理空间(即,空域)的地面控制器和在双向通信链路上与地面控制器通信的至少一个移动平台(即,飞机),其中每个移动平台(即,飞行器) 发送包括移动平台(即,飞行器)信号的至少传输时间的移动平台(即,飞行器)信号; 接地控制器发送包括地面信号的发送时间和地面控制器的位置的至少一个时间的接地信号; 每个移动平台(即,飞机)在该移动平台(即飞机)接收的移动平台(即,飞机)信号上执行到达时间(TOA)测量,并且还对由该移动平台(即,飞机)接收到的地面信号执行TOA测量 移动平台(即飞机); 地面控制器对由接地控制器接收的每个移动平台(即飞行器)信号进行TOA测量; 每个移动平台(即,飞机)确定该移动平台(即,飞行器)与其他移动平台(即,飞机)之间的范围(即空中范围)以及该移动平台(即,飞机)与 地面控制器 每个移动平台(即,飞机)至少基于该移动平台(即,飞行器)的范围(即,空气范围)和地面范围以及地面控制器的位置来确定其大地测量位置。