Patent ID: 9635510
Date: 2017-04-25
CPC Classifications: H04W

Claim:
1. A method for building a Wi-Fi beacon database comprising: (a) storing surveyed-location estimates and surveyed-location-error estimates for surveyed Wi-Fi beacons in the database; (b) computing GPS-based-location estimates and GPS-based-location-error estimates for Wi-Fi beacons detected by a wireless device contemporaneously with GPS position estimates for the wireless device, and storing the GPS-based-location estimates and GPS-based-location-error estimates in the database; (c) computing inferred-position-estimates and inferred-position-error estimates for the wireless device when Wi-Fi beacons are detected without contemporaneous GPS position estimates for the wireless device; and, (d) computing inferred-location estimates and inferred-location-error estimates for Wi-Fi beacons detected by the wireless device without contemporaneous GPS position estimates for the wireless device, and storing the inferred-location estimates and inferred-location-error estimates in the database.