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Detecting incorrectly placed access points

  • US 9,310,463 B2
  • Filed: 11/06/2013
  • Issued: 04/12/2016
  • Est. Priority Date: 11/06/2013
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • generating, by operation of one or more computer processors, a set of signal strength and distance data, comprising, for each access point in a plurality of access points;

    identifying a subset of the plurality of access points that neighbor the access point;

    collecting indications of signal strength for each of the access points in the subset, relative to the access point;

    calculate a distance between the access point and each of the access points in the subset, based on a position map;

    generating a line of best fit to the set of signal strength and distance data for each of the plurality of access points;

    determining a likelihood value for each of the plurality of access points,by determining a respective average negative log likelihood value based on the line of best fit, the indications of signal strength and the calculated distance for the access point; and

    determining the position within the position map for a first one of the plurality of access points is likely to be incorrect, by selecting an access point having the greatest average negative log likelihood value based on the determined likelihood values for each of the plurality of access points.

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