Method and system for estimating a subscriber's location in a cl

Details Method and system for estimating a subscriber's location in a cl Method and system for estimating a subscriber's location in a cl

1997-09-05

2000-11-14

Maung, Nay

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

455422, 455457, 342357, H04Q 720

Patent

active

061482110

ABSTRACT:
In a model of a wireless communication system service area (160), a set of characteristics associated with the reception of a model signal (210) are calculated (308), preferably using ray-tracing techniques, wherein the model signal (172) is transmitted from a selected location (162) to a receiver location (166). Next, a set of characteristics that describe a received signal at a receiver location in the wireless communication system service area are measured (316), wherein the receiver location corresponds to the receiver location in the model (160). Thereafter, a relationship between the calculated set of characteristics and the measured set of characteristics is determined (318), and the location of the subscriber unit that transmitted the received signal is estimated (320) in response to the relationship between the calculated set of characteristics and the measured set of characteristics.

REFERENCES:
patent: 5218367 (1993-06-01), Sheffer et al.
patent: 5299132 (1994-03-01), Wortham
patent: 5600706 (1997-02-01), Dunn et al.
patent: 5602903 (1997-02-01), LeBlanc et al.
patent: 5623429 (1997-04-01), Fortune et al.
patent: 5673305 (1997-09-01), Ross
patent: 5732354 (1998-03-01), MacDonald
patent: 5742666 (1998-04-01), Alpert
Internet web page describing RadioCamera.TM. made by U.S. Wireless Corporation, "Labyrinth Communications Group, Inc.".

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