Patent ID: 8243730
Filing Date: 2012-08-14
Classification: G01S,H04M,H04W

Abstract:
1. A computer-implemented method for determining an estimated location of a mobile device comprising: obtaining an Internet Protocol (IP) address of a mobile device; accessing, by one or more computers, a first quasi-static look-up table that includes associations between mobile devices and last hop routers serving the mobile devices to determine an IP address of a router that serves the mobile device, based on the IP address of the mobile device; accessing, by the one or more computers, a second quasi-static look-up table that includes associations between IP addresses of routers and geographic locations associated with the routers to determine a geographic region corresponding to the router based on the IP address of the router, the second quasi-static look-up table being different than the first quasi-static look-up table; and outputting the estimated location of the mobile device based on the geographic region corresponding to the router.