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Method and system for selecting optimal satellites for A-GPS location of handsets in wireless networks

  • US 7,928,903 B2
  • Filed: 03/02/2009
  • Issued: 04/19/2011
  • Est. Priority Date: 12/07/2007
  • Status: Active Grant
First Claim
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1. A method for determining a set of satellites for which assistance data may be provided to a wireless device, using a computer processor, comprising the steps of:

  • (a) determining a boundary for an approximate area in which the wireless device is located;

    (b) determining one or more sets of satellites as a function of said boundary; and

    (c) determining an optimum set of satellites from said one or more sets of satellites as a function of the dilution of precision (“

    DOP”

    ) of each of said one or more sets of satellites at predetermined points substantially on said boundary.

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