Patent ID: 6411811
Filing Date: 2002-06-25
Classification: G01S,H04W

Abstract:
A telecommunications system for providing correct Global Positioning System assistance data to a mobile terminal within a cellular network, said mobile terminal having a Global Positioning System receiver connected thereto, said telecommunications system comprising:a plurality of reference Global Positioning System receivers, each of said reference Global Positioning System receivers being adapted to receive respective Global Positioning System assistance data; and a mobile location center connected to said reference Global Positioning System receivers and in wireless communication with said mobile terminal, said mobile location center being adapted to determine a correct one of reference Global Positioning System receivers for said mobile terminal, receive only said correct Global Positioning System assistance data from only said correct reference Global Positioning System receiver and transmit said correct Global Positioning System assistance data to said Global Positioning System receiver connected to said mobile terminal for use by said Global Positioning System receiver connected to said mobile terminal in the calculation of the location of said mobile terminal.