×

Snap-to-road using wireless access point data

  • US 8,825,375 B2
  • Filed: 09/29/2009
  • Issued: 09/02/2014
  • Est. Priority Date: 09/29/2009
  • Status: Active Grant
First Claim
Patent Images

1. A computer-implemented method, comprising:

  • receiving location data and device access point data for a device, the location data indicating an estimate of a current location of the device at a time and the device access point data identifying one or more wireless access points visible to the device at the time;

    based on the estimated current location of the device, identifying a plurality of candidate map locations, each candidate map location being on a road and associated with road access point data identifying one or more wireless access points visible at the candidate map location;

    determining a corrected map location from the plurality of candidate map locations as being a most likely location of the device based at least in part on a respective correspondence between the device access point data and the road access point data for each candidate map location; and

    correcting the estimated current location of the device at the time by using the corrected map location as the current location of the device.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×