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    • 9. 发明申请
    • GEO-LOCATING END-USER DEVICES ON A COMMUNICATION NETWORK
    • GEO定位通信网络上的最终用户设备
    • WO2008006079A2
    • 2008-01-10
    • PCT/US2007072979
    • 2007-07-06
    • QUALCOMM INCCHEN LIRENSTEENSTRA JACKTAYLOR KIRK SNOERENBERG JOHN W II
    • CHEN LIRENSTEENSTRA JACKTAYLOR KIRK SNOERENBERG JOHN W II
    • G01S19/13G01S5/00G01S5/02G01S19/35G01S19/49H04L12/28
    • H04W64/00G01S5/0289H04W80/04
    • A scheme is provided for determining the geographical location of an active IP device coupled to an IP network. A network path to the user device is obtained to identify a last hop device having a known first geographical location. A last leg distance between the last hop device and the user device is calculated. The last leg bandwidth, propagation time, and propagation speed are also characterized to more accurately determine the last leg distance. By combining the known first geographical location and the distance of the last hop device and user device, a geographical location for the user device is obtained. To improve the accuracy of the geographical location of the user device, multiple last hop devices with known geographical locations are employed to obtain multiple geographical areas for the user device. The intersection or overlap of these geographical areas indicates a refined geographical location of the user device.
    • 提供了一种用于确定耦合到IP网络的活动IP设备的地理位置的方案。 获得到用户设备的网络路径以识别具有已知的第一地理位置的最后一跳设备。 计算最后一跳设备与用户设备之间的最后一段距离。 最后一条腿带宽,传播时间和传播速度也被表征为更准确地确定最后一条腿距离。 通过组合已知的第一地理位置和最后一跳设备和用户设备的距离,获得用户设备的地理位置。 为了提高用户设备的地理位置的准确性,采用具有已知地理位置的多个最后一跳设备来获得用户设备的多个地理区域。 这些地理区域的交叉或重叠表示用户设备的精细地理位置。