Communications localization system
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United States of America Patent
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Sep 28, 1999
Grant Date -
N/A
app pub date -
Nov 3, 1994
filing date -
Nov 3, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method and apparatus for locating a mobile radio communications transceiver in a cellular-telephone or cell-like communications system uses a simplified system for passive monitoring of the signals emitted by the transceiver. A single base station can determine a line of bearing to the remote transceiver. This line of bearing 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 (9-1-1) services and roadside assistance in response to calls for assistance, and it permits the passive monitoring of traffic flow.
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