Geo-fencing in a wireless location system
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United States of America Patent
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Nov 27, 2012
Grant Date -
Feb 9, 2006
app pub date -
Aug 8, 2005
filing date -
Jan 8, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
Method and systems are employed by a wireless location system (WLS) for locating a wireless device operating in a geographic area served by a wireless communications system. An exemplary method includes defining a geo-fenced area. The method then includes monitoring a set of predefined signaling links of the wireless communications system, and detecting that a mobile device has performed any of the following acts with respect to the geo-fenced area: (1) entered the geo-fenced area, (2) exited the geo-fenced area, and (3) come within a predefined degree of proximity near the geo-fenced area. A high-accuracy location function may then be triggered in order to determine the geographic location of the mobile device.
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