06108555 is referenced by 213 patents and cites 30 patents.

A method and apparatus for locating a mobile radio communications transceiver in a cellular-telephone or cellular-like communications system use a simplified system for passive monitoring of the signals emitted by the transceiver. Two receiving base stations can determine the timing of signal arrivals from the remote transceiver. This timing information is then combined with collateral, position-sensitive information to determine the likely location of the transceiver. The present invention has particular applicability to roadway transportation in that it facilitates enhanced emergency services and roadside assistance in response to calls for assistance, and it permits the passive monitoring of traffic flow.

Title
Enchanced time difference localization system
Application Number
8/772871
Publication Number
6108555
Application Date
December 26, 1996
Publication Date
August 22, 2000
Inventor
James O Stevenson
Fairfax
VA, US
Charles J Hinkle Jr
Vienna
VA, US
John E Maloney
Springfield
VA, US
Agent
Sterne Kessler Goldstein & Fox P L L C
Assignee
KSI
VA, US
IPC
H04B 7/00
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