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Navigation system acquisition and use of cellular coverage map data

  • US 9,043,135 B2
  • Filed: 08/31/2012
  • Issued: 05/26/2015
  • Est. Priority Date: 08/31/2012
  • Status: Active Grant
First Claim
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1. A method comprising:

  • detecting, at a mobile device, on a first date at a first time of day, a first wireless network signal strength that is current while the mobile device is at a first geographical location;

    storing, in the mobile device, a first mapping between the first geographical location, the first wireless network signal strength, the first date, and the first time of day;

    detecting, at the mobile device, on a second date at a second time of day, a second wireless network signal strength that is current while the mobile device is at a second geographical location;

    storing, in the mobile device, a second mapping between the second geographical location, the second wireless network signal strength, the second date, and the second time of day;

    determining, at the mobile device, for each particular area of a plurality of areas within a region, a quality of mobile communication that is possible within that particular area based at least in part on historical signal strength data that the mobile device alone has measured relative to signals that the mobile device has detected during previous trips that the mobile device has taken through that particular area;

    based at least in part on the quality of mobile communication that is possible within each particular area of the plurality of areas, a selection device selecting a particular route from a plurality of routes each ending at a same destination; and

    providing the particular route to a display device and presenting the particular route on the display device;

    wherein the historical strength data includes the first wireless network signal strength and the second wireless network signal strength; and

    wherein the plurality of areas includes the first geographical location and the second geographical location.

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