Position estimating system

Details Position estimating system Position estimating system

2011-04-05

2011-04-05

Afshar, Kamran (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S456200, C455S456300, C455S456500, C455S456600, C455S457000, C342S450000

Reexamination Certificate

active

07920874

ABSTRACT:
A position estimating system capable of accurately estimating the position assumed by a target terminal user based upon measurement of wireless reception signal levels of signals from a target terminal is provided. The position estimating system includes a target terminal that wirelessly transmits a position estimation request, a plurality of reference terminals disposed at specific positions which, measure the signal strength of wireless signals from the target terminal and a position estimating server that estimates the position of the target terminal based upon the reception signal levels measured in correspondence to each of the reference terminals. The reference terminals each include a reception signal level utilization OK/NG judgment unit that makes a judgment as to whether or not the reception signal level value having been measured is to be used in position estimation based upon an index indicating the level of reliability of the reception signal.

REFERENCES:
patent: 6362783 (2002-03-01), Sugiura et al.
patent: 2002/0183071 (2002-12-01), Shioda et al.
patent: 2003/0008669 (2003-01-01), Stein et al.
patent: 2003/0222819 (2003-12-01), Karr et al.
patent: 2005/0227703 (2005-10-01), Cheng
patent: 2007/0037518 (2007-02-01), Ninomiya et al.
patent: 05-011039 (1993-01-01), None
patent: 05-264710 (1993-10-01), None
patent: 09-159746 (1997-06-01), None
patent: 2000-075012 (2000-03-01), None
patent: 2005-507070 (2005-03-01), None
“A Maximum Likelihood Estimation Method of Localization using RSSI in wireless Sensor Networks” by Dapeng Zhao and seven others, Electronic Information Communication Society, technical report, IN 2004-327, pp. 409-4014.

Affiliated with

Also associated with

Rating

Position estimating system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Position estimating system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Position estimating system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2680686