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.
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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 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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