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Power saving during sensor-assisted navigation

  • US 9,618,351 B1
  • Filed: 03/26/2015
  • Issued: 04/11/2017
  • Est. Priority Date: 03/26/2015
  • Status: Active Grant
First Claim
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1. A method of operating a mobile device, the method comprising:

  • receiving location improvement data for a geographic location, the location improvement data including a value corresponding to improvement in accuracy for location data for the geographic location, wherein the value is determined by;

    computing a first error range of first location data for the geographic location generated using a Global Positioning System (GPS) receiver in combination with sensor data;

    computing a second error range of second location data for the geographic location generated using only the GPS receiver; and

    computing a margin of improvement between the first error range and the second error range;

    determining that the value is equal to or greater than a sensor enablement threshold criterion for the geographic location; and

    enabling one or more sensors for use in location determination when at or near the geographic location.

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