Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-01-24
2006-01-24
Appiah, Charles N. (Department: 2686)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S456300, C455S456600, C342S357490, C701S214000
Reexamination Certificate
active
06990351
ABSTRACT:
Even in areas where signals from only two or less base stations are available for position calculation, the mobile handset position can be calculated, expanding the position information service area and improving the usefulness. When the number of base stations available for position calculation is three or more, the position calculation is performed based on trilateration. When the number of available base stations is two or one, the position calculation is performed by using a two-station-based position calculation method or a one-station-based position calculation method according to the number of available base stations.
REFERENCES:
patent: 6097958 (2000-08-01), Bergen
patent: 6385458 (2002-05-01), Papadimitriou et al.
patent: 6484034 (2002-11-01), Tsunehara et al.
patent: 6697629 (2004-02-01), Grilli et al.
patent: 2004/0172190 (2004-09-01), Tsunehara et al.
patent: 1 452 887 (2004-09-01), None
patent: 2 215 932 (1989-09-01), None
patent: 07-181242 (1993-12-01), None
patent: 410271554 (1998-10-01), None
patent: 2000-356672 (1999-06-01), None
patent: 2002-243827 (2002-08-01), None
patent: 2004-101254 (2004-04-01), None
patent: 1999-0073743 (1998-03-01), None
patent: 2000-0007448 (1998-07-01), None
patent: WO 99/59373 (1999-11-01), None
Kuwahara Mikio
Tsunehara Katsuhiko
A. Marquez, Esq. Juan Carlos
Appiah Charles N.
Fisher Esq. Stanley P.
Hitachi , Ltd.
Reed Smith LLP
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