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SYSTEM AND METHOD FOR PREVENTING A-GPS DEVICES FROM SEARCHING FOR SPECIFIC SATELLITES

  • US 20090146877A1
  • Filed: 04/09/2008
  • Published: 06/11/2009
  • Est. Priority Date: 12/07/2007
  • Status: Active Grant
First Claim
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1. A method for estimating the location of a wireless device comprising the steps of:

  • (a) determining a set of satellites as a function of an approximate area in which the wireless device is located;

    (b) transmitting assistance data to said device, said assistance data including information from said set of satellites; and

    (c) estimating a location of the device from said information,wherein said assistance data prevents the wireless device from searching for signals from one or more satellites in said set of satellites.

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