Method and system for providing assistance data for A-GPS location of handsets in wireless networks
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United States of America Patent
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Jan 28, 2014
Grant Date -
Dec 30, 2010
app pub date -
Sep 1, 2010
filing date -
Dec 7, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A system and method for determining the location of a wireless device. A boundary for an approximate area in which the wireless device is located is determined and a plurality of satellites may be determined as a function of the boundary. Assistance data is transmitted to the device which includes information from the plurality of satellites, and the location of the wireless device may be determined from the information. In one embodiment, if the number of the plurality of satellites is greater than a predetermined threshold then the number of satellites may be reduced as a function of one or more of the elevation of each satellite above the horizon, a distance between each satellite to one or more other satellites, and an altitude of each satellite.
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