Patent ID: 9279877
Filing Date: 2016-03-08
CPC Classification: G01S,H04B,H04W

Claim Text:
1. A method for estimating a position of a wireless local area network (WLAN) enabled mobile device, comprising: receiving, by the mobile device, one or more WLAN packets transmitted within a range of the mobile device; extracting WLAN information from the one or more WLAN packets to identify one or more WLAN access points (APs); based on the extracted WLAN information, caching information, at the mobile device, indicating an identity of the one or more WLAN APs and a time of detection of the one or more WLAN APs; subsequent to the caching, receiving a request for a position estimate of the mobile device; and in response to the subsequently-received request for the position estimate, providing the cached information to a WLAN positioning system (WPS) to obtain an estimate of the position of the mobile device that is based, at least in part, on one or more past positions of the mobile device indicated by the cached information.