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Reducing location search space

  • US 9,560,489 B2
  • Filed: 09/29/2015
  • Issued: 01/31/2017
  • Est. Priority Date: 01/31/2013
  • Status: Active Grant
First Claim
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1. A method comprising:

  • obtaining, by a server from a sampling device, sets of measurements captured at sampling locations along a route traveled by the sampling device at a venue;

    determining, by the server, location fingerprint data of the venue, the location fingerprint data comprising expected measurements of signals from the one or more signal sources at locations including the sampling locations;

    receiving, by the server from a requesting device that is different from the sampling device, a first request for first location data;

    providing, by the server to the requesting device as a response to the first request, the estimated locations of the one or more signal sources;

    receiving, by the server from the requesting device, a second request for second location data, the second request including an estimated first location of the requesting device at the venue; and

    providing, by the server to the requesting device as a response to the second request, a portion of the fingerprint data that corresponds to the estimated first location,wherein the server comprises one or more computers.

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