发明名称 Method and system for tracking mobile telemetry devices
摘要 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.
申请公布号 US7460871(B2) 申请公布日期 2008.12.02
申请号 US20040758770 申请日期 2004.01.16
申请人 SKYGUARD, LLC 发明人 HUMPHRIES LAYMON SCOTT;NGO HUEY-JIUN;PURANIK GAGAN
分类号 G01S19/11;H04Q7/20;G01S1/00;G01S5/14;G01S19/48 主分类号 G01S19/11
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