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Methods and apparatus for providing location data with variable validity and quality

  • US 8,396,484 B2
  • Filed: 08/15/2008
  • Issued: 03/12/2013
  • Est. Priority Date: 08/16/2007
  • Status: Active Grant
First Claim
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1. A method comprisingreceiving a request for location services, the request generated by a requesting device and received by a system separate from the requesting device;

  • determining a locale associated with the requesting device;

    determining a set of visible triangulation sources based on the locale;

    selecting, by the system, an accuracy level based on the requesting device;

    determining, from the set, a subset of the visible triangulation sources that will provide a location fix at the selected accuracy level;

    determining a time period associated with the location fix, wherein the location fix is accurate during the time period;

    constructing a message that includes information required by the requesting device to locate the requesting device, the message constructed in a format that the requesting device uses to provide the location fix for the time period; and

    broadcasting the message at least to the requesting device.

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