Position calculating method, signal receiver, and position...

Details Position calculating method, signal receiver, and position... Position calculating method, signal receiver, and position...

2005-12-06

2005-12-06

Phan, Dao (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Beacon or receiver

C342S457000

Reexamination Certificate

active

06972718

ABSTRACT:
A method of measuring reception timings of signals transmitted and received between base stations and a mobile station and calculating the position of the mobile station by using the reception timings and the reception positions of the signals comprises the steps of obtaining the address information items necessary to specify incoming signals used for the position calculation, analyzing address information items included in the incoming signals, and selecting incoming signals used for position calculation according to a result of comparing the obtained address information items with address information items analyzed in accordance with the incoming signals. A signal incoming from a desired radio station is thus selected and used for position calculation.

REFERENCES:
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patent: 6807427 (2004-10-01), Sakamoto et al.
patent: 2002/0132626 (2002-09-01), Tsunehara et al.
patent: 2004/0254980 (2004-12-01), Motegi et al.
patent: 2000-156882 (1998-11-01), None
A. Ogino et al., “Integrated Wireless LAN Access System—Study on Location System”, Hitachi, Ltd., Central Research Laboratory, 2003, with English translation, pp. 662, and 1-5.

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