Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1996-12-26
2000-08-22
Le, Thanh Cong
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455422, 342457, H04B 700
Patent
active
061085553
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.
REFERENCES:
patent: 4728959 (1988-03-01), Maloney et al.
patent: 4742357 (1988-05-01), Rackley
patent: 4799062 (1989-01-01), Sanderford, Jr. et al.
patent: 5003317 (1991-03-01), Gray et al.
patent: 5045860 (1991-09-01), Hodson
patent: 5056106 (1991-10-01), Wang et al.
patent: 5095500 (1992-03-01), Taylor et al.
patent: 5119104 (1992-06-01), Heller
patent: 5163004 (1992-11-01), Rentz
patent: 5166694 (1992-11-01), Russell et al.
patent: 5218367 (1993-06-01), Sheffer et al.
patent: 5225809 (1993-07-01), Bunn
patent: 5264857 (1993-11-01), Baghdady
patent: 5293642 (1994-03-01), Lo
patent: 5299132 (1994-03-01), Wortham
patent: 5311195 (1994-05-01), Mathis et al.
patent: 5317323 (1994-05-01), Kennedy et al.
patent: 5319374 (1994-06-01), Desai et al.
patent: 5428546 (1995-06-01), Shah et al.
patent: 5465289 (1995-11-01), Kennedy, Jr.
patent: 5719584 (1998-02-01), Otto
patent: 5724660 (1998-03-01), Kauser et al.
patent: 5859612 (1999-01-01), Gilhousen
Siuru, Bill "On-Board Navigation Systems for Your Car" pp. 39-42, 92, Popular Electronics, Jan., 1993.
Bethel, R.E. and Paras, G.J., "A PDF Multitarget Tracker," IEEE Transactions on Aerospace and Electronic Systems, vol. 30, No. 2, Apr. 1994,. pp. 386-403.
Hinkle, Jr. Charles J.
Maloney John E.
Stevenson James O.
Cong Le Thanh
KSI Inc.
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