Patent ID: 9578619
Date: 2017-02-21
CPC Classifications: H04W

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