Positioning system, positioning server, base station and...

Details Positioning system, positioning server, base station and... Positioning system, positioning server, base station and...

2006-03-14

2006-03-14

D'Agosta, Stephen M. (Department: 2683)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S456200, C455S456300, C455S456500, C455S457000, C455S414200, C455S456600, C701S207000, C701S214000, C340S988000, C342S450000

Reexamination Certificate

active

07013150

ABSTRACT:
To provide a terminal location estimation method capable of accurately estimating a location of a mobile terminal when providing information services according to the location of the terminal in a radio communication system. A positioning server sends a location measurement probe message to the mobile terminal in order to measure the location of the terminal. Each of base stations receives a response message broadcasted from the terminal, measures the reception level and delay spread and sends the measurement results to the positioning server. The positioning server has a radio wave propagation estimating portion and a database for storing estimation results thereof. The server estimates the location of the terminal by checking the measurement results of the base stations against the estimation results on radio wave propagation stored in the database.

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J.W. McKown et al., “Ray Tracing as a Design Tool for Radio Networks,”IEEE Network MagazineNov. 1991, 5(6):27-30.

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