SYSTEM AND METHOD FOR PROVISIONING ASSISTANCE GLOBAL POSITIONING SYSTEM INFORMATION TO A MOBILE STATION
First Claim
1. A telecommunications system for determining the location of a mobile terminal within a cellular network by provisioning a correct one of a plurality of assistance data to a Global Positioning System receiver connected to said mobile terminal, said telecommunications system comprising:
- a plurality of reference Global Positioning System receivers within said telecommunications system, each said reference Global Positioning System receiver having a respective one of said assistance data therein; 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 determining a correct one of said reference Global Positioning System receivers, said correct Global Positioning System receiver sending said correct assistance data to said mobile location center, said mobile location center sending said correct assistance data to said Global Positioning System receiver connected to said mobile terminal for calculation of the location of said mobile terminal.
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Accused Products
Abstract
A telecommunications system and method is disclosed for provisioning assistance Global Position System (GPS) data to a GPS receiver within a mobile terminal. This can be accomplished by having multiple reference GPS receivers located throughout a cellular network, each reference GPS receiver being capable of providing locally valid lists of visible satellites and the associated ephemeris and clock correction information. The location of the Base Transceiver Station (BTS) within the cell that the mobile terminal with a built-in or attached GPS receiver is currently located in can be used as the local position estimate for that mobile terminal. From this local position estimate, the nearest reference GPS receiver can be ascertained and the relevant assistance data can then be sent to the GPS receiver within the mobile terminal through the cellular network to enable the built-in GPS receiver to calculate its position relatively quickly.
49 Citations
20 Claims
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1. A telecommunications system for determining the location of a mobile terminal within a cellular network by provisioning a correct one of a plurality of assistance data to a Global Positioning System receiver connected to said mobile terminal, said telecommunications system comprising:
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a plurality of reference Global Positioning System receivers within said telecommunications system, each said reference Global Positioning System receiver having a respective one of said assistance data therein; 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 determining a correct one of said reference Global Positioning System receivers, said correct Global Positioning System receiver sending said correct assistance data to said mobile location center, said mobile location center sending said correct assistance data to said Global Positioning System receiver connected to said mobile terminal for calculation of the location of said mobile terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for determining the location of a mobile terminal within a cellular network by provisioning a correct one of a plurality of assistance data to a Global Positioning System receiver connected to said mobile terminal, said method comprising the steps of:
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determining, by a mobile location center connected to a plurality of reference Global Positioning System receivers, a correct one of said reference Global Positioning System receivers within said cellular network, each said reference Global Positioning System receiver having a respective one of said assistance data therein;
sending, by said correct reference Global Positioning System receiver, said correct assistance data to said mobile location center;
sending, by said mobile location center, said correct assistance data to said Global Positioning System receiver connected to said mobile terminal; and
calculating, by said Global Positioning System receiver connected to said mobile terminal, the location of said mobile terminal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification