发明名称 Method and system for tracking mobile telemetry devices
摘要 <p>An approach is provided for tracking a telemetry device over a wireless network. A determination is made whether the telemetry device is operating in a first mode requiring assisted Global Positioning System (A-GPS) data from the wireless network to determine location of the telemetry device. The A-GPS data is transmitted to the telemetry device if the telemetry device is operating in the first mode, wherein the telemetry device operates in a second mode to obtain GPS data autonomously for determining the location when the telemetry device is outside of the coverage area of the wireless network. </p>
申请公布号 EP1555543(A3) 申请公布日期 2006.06.21
申请号 EP20050000854 申请日期 2005.01.17
申请人 MCI, INC. 发明人 HUMPHRIES, LAYMON SCOTT;NGO, HUEY-JIUN;PURANIK, GAGAN
分类号 G01S19/11;G01S1/00;G01S5/14;G01S19/48 主分类号 G01S19/11
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