Method and system for aiding GPS receivers via a cellular or PCS network
    1.
    发明授权
    Method and system for aiding GPS receivers via a cellular or PCS network 有权
    通过蜂窝或PCS网络帮助GPS接收机的方法和系统

    公开(公告)号:US06204808B1

    公开(公告)日:2001-03-20

    申请号:US09264120

    申请日:1999-03-08

    IPC分类号: H04B7185

    摘要: In accordance with the invention, there is disclosed a system for determining location of a mobile station. The mobile station includes a transceiver operating in a wireless network and a GPS receiver. The system includes a wireless network control system including GPS receivers for obtaining ephemeris data. The control system develops assistance information from the ephemeris data and transmits the assistance information to the mobile station via the wireless network. The assistance information represents range at a fixed location in the wireless network in proximity to the mobile station at a select time, and derivatives of the range, relative to plural select satellites in the GPS. The mobile station utilizes received assistance information for searching the composite received signals from the plural select satellites in the GPS to measure a code phase for plural ones of the select satellites in the GPS and returning the measured code phases to the wireless network control system via the wireless network. The wireless network control system computes location of the mobile station in the wireless network utilizing a fixed location and the measured code phases.

    摘要翻译: 根据本发明,公开了一种用于确定移动台的位置的系统。 移动台包括在无线网络中工作的收发机和GPS接收机。 该系统包括一个包括用于获取星历数据的GPS接收机的无线网络控制系统。 控制系统从星历数据开发辅助信息,并通过无线网络向移动台发送辅助信息。 辅助信息表示在选择时间附近的移动台附近的无线网络中的固定位置处的范围,以及相对于GPS中的多个选择卫星的范围的导数。 移动台利用接收到的辅助信息来搜索来自GPS中的多个选择卫星的复合接收信号,以测量GPS中的多个选择卫星的码相位,并经测量码相位返回无线网络控制系统 无线网络。 无线网络控制系统使用固定位置和测量的码相位来计算移动站在无线网络中的位置。

    Accurate GPS time estimate based on information from a wireless communications system
    2.
    发明授权
    Accurate GPS time estimate based on information from a wireless communications system 有权
    基于来自无线通信系统的信息的GPS时间估计精确度

    公开(公告)号:US06603978B1

    公开(公告)日:2003-08-05

    申请号:US09534787

    申请日:2000-03-24

    IPC分类号: H04B1500

    摘要: A method and apparatus for acquiring timing signals for use in a positioning receiver using timing assistance provided by a wireless communications system, such as cellular telephone system. A mobile terminal equipped with a positioning receiver operates in a wireless communications system having control channels and at least one traffic channel unsynchronized to the control channels. The mobile terminal camps on a first control channel in a first cell having a first time base associated therewith. While camped on the control channel, the mobile terminal establishes a local clock reference, internal to the mobile terminal, capable of tracking the first time base. The mobile terminal then operates on a first traffic channel that is unsynchronized to the first control channel and notes the difference in time bases between the control channel and the traffic channel. Either while camped on the control channel or while operating on the traffic channel, the mobile terminal receives TDMA-to-GPS relationship data, which is a measure of the offset between system time for the wireless communications system as expressed on particular control channel (“TDMA time”) and the system time for the GPS system (“GPS time”). Thereafter, an accurate estimate of the GPS time is calculated in the mobile terminal based on the local clock reference and the TDMA-to-GPS relationship data. In some aspects, the local clock reference is updated based on the first traffic channel so as to minimize errors arising from timing drift.

    摘要翻译: 一种用于获取定时信号的方法和装置,所述定时信号使用由无线通信系统(诸如蜂窝电话系统)提供的定时辅助。 配备有定位接收机的移动终端在具有控制信道和与控制信道不同步的至少一个业务信道的无线通信系统中操作。 移动终端驻留在具有与其相关联的第一时基的第一小区中的第一控制信道上。 当在控制信道上驻留时,移动终端在移动终端的内部建立能够跟踪第一时间基准的本地时钟参考。 然后,移动终端在与第一控制信道不同步的第一业务信道上操作,并记录控制信道与业务信道之间的时基差异。 无论是在控制信道上驻留还是在业务信道上操作时,移动终端接收TDMA到GPS关系数据,这是在特定控制信道(“特定控制信道”上表示的无线通信系统的系统时间之间的偏移的量度) TDMA时间“)和GPS系统的系统时间(”GPS时间“)。 此后,基于本地时钟参考和TDMA到GPS关系数据,在移动终端中计算GPS时间的精确估计。 在一些方面,基于第一业务信道更新本地时钟参考,以便最小化由定时漂移引起的错误。

    Method and Apparatus for Routing Emergency Calls in a VoIP System
    5.
    发明申请
    Method and Apparatus for Routing Emergency Calls in a VoIP System 审中-公开
    用于在VoIP系统中路由紧急呼叫的方法和装置

    公开(公告)号:US20070153983A1

    公开(公告)日:2007-07-05

    申请号:US11608554

    申请日:2006-12-08

    IPC分类号: H04M3/08

    摘要: Methods and apparatuses for routing emergency calls originated from mobile wireless devices in a Voice-over-IP (VoIP) system are described herein. In one or more embodiments, emergency calls are routed in a VoIP system by receiving incoming emergency calls originated from dual-mode mobile devices connected to the VoIP system through wireless access points (WAPs), determining locations associated with the incoming emergency calls, and redirecting callers to a cellular network. In other embodiments, emergency calls are routed in a VoIP system by mapping WAP identifiers to emergency answering points (EAPs), receiving an incoming emergency call from an originating WAP, identifying an EAP relating to the originating WAP, and directing the emergency call to the identified EAP.

    摘要翻译: 在本文中描述了用于路由来自IP语音(VoIP)系统中的移动无线设备的紧急呼叫的方法和装置。 在一个或多个实施例中,紧急呼叫通过从无线接入点(WAP)连接到VoIP系统的双模式移动设备接收来自紧急呼叫的来话紧急呼叫,确定与进入的紧急呼叫相关联的位置以及重定向 呼叫者到蜂窝网络。 在其他实施例中,紧急呼叫通过将WAP标识符映射到紧急应答点(EAP),从始发WAP接收进入的紧急呼叫,识别与起始WAP相关的EAP,并将紧急呼叫指向 确定EAP。

    System and method for sharing common location-related information between communication devices
    7.
    发明授权
    System and method for sharing common location-related information between communication devices 有权
    用于在通信设备之间共享公共位置相关信息的系统和方法

    公开(公告)号:US08400946B2

    公开(公告)日:2013-03-19

    申请号:US11669526

    申请日:2007-01-31

    摘要: Methods and systems for supplying data objects to users of a communication system are disclosed. In an exemplary method a session is established between a first and second communication device, and a primary data object providing first information pertaining to a user of the first communication device is transferred to the second communication device upon the occurrence of a triggering event at the first communication device. A request for a secondary data object is transferred from the second communication device to a data server, the request including the first information and further including information pertaining to the user of the second communication device. A secondary data object intended for rendering at the first and second communication devices is created and transferred to the first and second communication devices.

    摘要翻译: 公开了用于向通信系统的用户提供数据对象的方法和系统。 在示例性方法中,在第一和第二通信设备之间建立会话,并且在第一通信设备发生触发事件时,提供与第一通信设备的用户有关的第一信息的主数据对象被传送到第二通信设备 通讯装置 对第二数据对象的请求从第二通信设备传送到数据服务器,该请求包括第一信息,并且还包括与第二通信设备的用户有关的信息。 旨在用于在第一和第二通信设备处呈现的辅助数据对象被创建并被传送到第一和第二通信设备。

    Event Triggered Pairing of Wireless Communication Devices Based on Time Measurements
    9.
    发明申请
    Event Triggered Pairing of Wireless Communication Devices Based on Time Measurements 审中-公开
    基于时间测量的无线通信设备事件触发配对

    公开(公告)号:US20110126014A1

    公开(公告)日:2011-05-26

    申请号:US12789534

    申请日:2010-05-28

    IPC分类号: H04L9/32 H04B7/00

    摘要: An event-triggered pairing mechanism allows pairing wireless devices having short range interfaces (e.g., Bluetooth devices) by bumping the wireless devices together. A wireless device being paired with a connecting device detects a bump event, determines time information about the bump event, and then generates a private session key based on the time information. Once the devices are paired and the private session key is generated, user content can be securely exchanged between the devices.

    摘要翻译: 事件触发配对机制允许通过将无线设备相互碰撞来配对具有短距离接口的无线设备(例如,蓝牙设备)。 与连接装置配对的无线装置检测碰撞事件,确定关于碰撞事件的时间信息,然后基于时间信息生成专用会话密钥。 一旦设备配对并且生成了专用会话密钥,就可以在设备之间安全地交换用户内容。

    Adaptively Selecting Channel Filters for Multi-Carrier Edge
    10.
    发明申请
    Adaptively Selecting Channel Filters for Multi-Carrier Edge 审中-公开
    自适应选择多载波边缘的信道滤波器

    公开(公告)号:US20100069009A1

    公开(公告)日:2010-03-18

    申请号:US12210477

    申请日:2008-09-15

    IPC分类号: H03D1/04

    CPC分类号: H04L25/03834

    摘要: The dual-mode processor and corresponding method described herein selectively switches between a single-frequency mode, such as appropriate for an EDGE network, and a multiple-frequency mode, such as appropriate for a multi-carrier EDGE network. The pulse-shaping filters used during the multiple-frequency mode have a different filter response than the single-channel filter used during the single-frequency mode. The filter response of the pulse-shaping filters used during the multiple-frequency mode reduces cross-channel interference caused by the data symbols of two or more adjacent frequency channels that have the same or similar modulation and power level.

    摘要翻译: 本文描述的双模式处理器和相应方法选择性地在诸如适合于EDGE网络的单频模式与适合于多载波EDGE网络的多频模式之间切换。 在多频模式下使用的脉冲整形滤波器具有与在单频模式下使用的单通道滤波器不同的滤波器响应。 在多频模式下使用的脉冲整形滤波器的滤波器响应降低了由具有相同或相似调制和功率电平的两个或多个相邻频道的数据符号引起的交叉信道干扰。