Wireless position location system and method using...

Details Wireless position location system and method using... Wireless position location system and method using...

H - Electricity

04

Q

H04Q 7/36 (2006.01) G01S 5/00 (2006.01) G01S 5/14 (2006.01)

Patent

CA 2327719

A wireless position location system and method is disclosed for determining location of a mobile transceiver, such as a mobile station or wireless telephone. The system employs differential global positioning system (DGPS) information to accurately determine the location of the mobile transceiver. A cellular base transceiver station (BTS) may be used as a local reference station (LRS) which transmits the DGPS information to the mobile transceiver via general packet radio services (GPRS). The mobile transceiver is equipped to receive global positioning system (GPS) signals from GPS satellites. The mobile transceiver uses the DGPS information and the GPS signals to determine its location. The BTS may comprise an automatic position location (APL) system for periodically interrogating the mobile transceiver to respond and for automatically contacting assistance with the location of the mobile transceiver, if the mobile transceiver doesn't properly respond within a set time period.

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