Patent ID: 8154454

Claim:
A method of using a Wireless Local Area Network (WLAN) and satellite enabled device to infer that a reference location associated with a detected WLAN access point (AP) is not the present location of the AP, the method comprising: identifying WLAN APs detected by the WLAN and satellite enabled device; accessing a reference database to obtain a reference location associated with at least one of the WLAN APs; grouping the WLAN APs into clusters of at least one WLAN AP based on the reference locations associated with the identified WLAN APs; determining an aggregate reference location for at least one cluster of WLAN APs based on the reference locations associated with the WLAN APs grouped into said cluster; receiving at least one possible Satellite Positioning System (SPS) location solution of the device based on satellite measurements from at least two satellites; estimating a distance between the aggregate reference location associated with the at least one cluster and the at least one possible SPS location solution; and inferring that the reference location associated with the at least one WLAN AP of the at least one cluster is not the present location of the WLAN AP if the distance between the aggregate reference location of said cluster and the at least one SPS location solution is above a predetermined threshold.