Title:
【発明の名称】通信ローカライゼーションシステム
Document Type and Number:
Japanese Patent JP2002533822
Kind Code:
A
Abstract:
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.
Inventors:
Maloney John Yi.
Hinkle Charles J. Jr.
Stevenson James O.
Hinkle Charles J. Jr.
Stevenson James O.
Application Number:
JP2000590453A
Publication Date:
October 08, 2002
Filing Date:
December 23, 1997
Export Citation:
Assignee:
KSI Inc.
International Classes:
G08G1/13; G01S5/12; G01S5/14; G08G1/01; (IPC1-7): G08G1/13; G08G1/01; H04Q7/34
Attorney, Agent or Firm:
Yoshikazu Tani (2 outside)