Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1998-02-27
2000-12-12
Tsang, Fan
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455 111, 455404, 455427, 455456, 455521, 342464, 342457, 342458, 701300, H04Q 736
Patent
active
061610186
ABSTRACT:
At a receiver location in a wireless communication system service area, a set of characteristics that describe a received ray of a subscriber signal is measured. In a model of the wireless communication system service area, a propagation path of a model ray launched from a location in the model of the wireless communication system service area that corresponds to the receiver location in the wireless communication system service area is determined, wherein the ray has model signal characteristics based upon the set of characteristics that describe the received ray of the subscriber signal. Thereafter, a subscriber location in the wireless communication system service area is estimated in response to the propagation path of the model ray.
REFERENCES:
patent: 4799062 (1989-01-01), Sanderford, Jr. et al.
patent: 5802492 (1998-09-01), DeLorme et al.
patent: 5999131 (1999-12-01), Sullivan
patent: 6026304 (2000-02-01), Hilsenrath et al.
Internet web page describing RadioCamera.TM. made by U.S. Wireless Corporation, "Labyrinth Communications Group, Inc.".
Reed John Douglas
Wang Shu-Shaw (Peter)
Ferguson Keith
Motorola Inc.
Terry L. Bruce
Tsang Fan
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