Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-06-06
2006-06-06
D'Agosta, Steve M. (Department: 2683)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S404200, C455S414200, C455S432100, C455S456200, C455S456300, C455S456400, C455S456500, C455S456600, C455S457000, C340S989000, C342S457000, C180S169000, C701S217000
Reexamination Certificate
active
07058411
ABSTRACT:
A wireless communication positioning method for determining the position of a mobile station when connecting to a base station. The coordinates of the mobile station are estimated according to the geomagnetic field strength measured by the mobile station, and the distance between the base station and the mobile station. The present invention further provides a method for solving the problem of acquiring two or more possible coordinates using the positioning method. The correct coordinates of the mobile station are determined by relocating the mobile station using the same method when the mobile station moves to another position aided by a direction of movement detected by the mobile station.
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patent: 6114995 (2000-09-01), Ketchum
patent: 6546336 (2003-04-01), Matsuoka et al.
Chen Wei-Jou
Chiang Che-Chih
Benq Corporation
D'Agosta Steve M.
Thomas Kayden Horstemeyer & Risley
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