Method and system for locating a mobile subscriber in a cdma...

Details Method and system for locating a mobile subscriber in a cdma... Method and system for locating a mobile subscriber in a cdma...

H - Electricity

04

W

H04W 88/08 (2009.01) G01S 5/02 (2010.01) H04B 7/216 (2006.01)

Patent

CA 2489816

The invention determines the geographic location of a subscriber unit within a CDMA communication system. At least one base station transmits a spread spectrum signal with a chip code sequence unique to that base station. A subscriber unit receives the base station signal and transmits a spread spectrum signal with a unique chip code sequence time synchronized with the chip code sequence of the received base station signal. The base station receives the subscriber unit signal and compares the chip code sequence of the received subscriber unit signal with the chip code sequence signal transmitted by the base station to determine the location of the subscriber unit.

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