Method and apparatus for positioning a mobile station

Details Method and apparatus for positioning a mobile station Method and apparatus for positioning a mobile station

2005-02-08

2005-02-08

Trost, William (Department: 2683)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S456500, C455S561000, C342S450000, C342S457000, C342S463000, C342S126000, C342S146000, C342S148000

Reexamination Certificate

active

06853847

ABSTRACT:
A positioning apparatus and method for accurately determining a current position of a mobile station. The current position of the mobile station is determined utilizing radio waves arriving from a plurality of base stations installed in a communication area. For calculating a propagation range of a radio wave arriving from each base station, error correction processing is performed using a predetermined error correction coefficient previously calculated by measuring a radio wave propagation situation around each base station to estimate a propagation range of a direct wave within incoming radio waves. The current position of the mobile station is determined using the estimated propagation range and the positions of the respective base station.

REFERENCES:
patent: 6026304 (2000-02-01), Hilsenrath et al.
patent: 6070079 (2000-05-01), Kuwahara
patent: 6466565 (2002-10-01), Wax et al.
patent: 6492944 (2002-12-01), Stilp
patent: 6707422 (2004-03-01), Sheynblat et al.
patent: 20020151314 (2002-10-01), Nohara
patent: 20030114170 (2003-06-01), Rick et al.
patent: 20040157621 (2004-08-01), Yamasaki et al.

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