Patent ID: 7933612
Filing Date: 2011-04-26
Classification: G01S,H04W

Abstract:
1. A system for determining a location of a mobile device, comprising: a receiver component for the mobile device that receives signals from a plurality of base stations; a ranking component that generates a ranking of base stations based upon signal strengths of signals received at a specific mobile device location; a rank region data store that maintains a plurality of rank regions, each of the plurality of rank regions being associated with a physical region and being defined by a base station ranking of signal strengths of a plurality of base stations, the signal strengths measured at one or more particular locations located within the physical region and each of the plurality of rank regions having location information including a location estimate for the rank region, the location estimate being based at least in part on the one or more particular locations; and a search component that obtains location information from the rank region data store by matching the generated ranking of base stations to one of the base station rankings defining one of the rank regions and retrieving the location information associated with that rank region.