Patent ID: 9131459
Filing Date: 2015-09-08
Classification: H04W

Abstract:
1. A method comprising, in a first server in a cellular network: sending a request for location information to a mobile station; receiving, from said mobile station, a request for assistance data, said request for assistance data indicating a coarse position of said mobile station; sending a request for an address of a third server to a second server, said request for said address of said third server indicating said coarse position of said mobile station; receiving, from said second server, said address of said third server; sending, based on said address of said third server, a request for local mapping data to said third server; receiving, from said third server, said local mapping data; sending said assistance data to said mobile station, said assistance data being based, at least in part, on said local mapping data and wherein said assistance data identifies at least one wireless signal transmitter; and receiving said location information from said mobile station, said location information being based, at least in part, on said assistance data and an indoor-positioning operation based, at least in part, on at least one wireless signal transmitted by said at least one wireless signal transmitter.