A method and apparatus for locating a wireless mobile unit

Details A method and apparatus for locating a wireless mobile unit A method and apparatus for locating a wireless mobile unit

H - Electricity

04

Q

H04Q 7/36 (2006.01) G01S 5/06 (2006.01) G01S 5/14 (2006.01) H04M 11/04 (2006.01) G01S 5/00 (2006.01)

Patent

CA 2289049

A position locator enables the detection of an originating location of a 911 caller under various RF propagation positions. Through the use of a transceiver and global positioning unit in a portable position locator, even if only one base station receiving the 911 call can be detected, the origin of the 911 call can still be located. Utilizing information from the position locator and at least one base station, an estimated distance between the position locator and the 911 caller, as well as an estimated distance between the at least one base station and the 911 caller, can be determined utilizing TOA or TDOA techniques to enable the location of the caller. An emergency vehicle carrying the position locator can constantly monitor and move toward the location of the 911 caller calling from a wireless mobile unit.

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