Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2008-06-03
2008-06-03
Trost, William (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S404200, C455S456600, C455S229000, C455S421000, C455S422100, C340S989000, C340S991000
Reexamination Certificate
active
07383051
ABSTRACT:
A method for determining the location of a mobile unit (mobile unit) in a wireless communication system is disclosed. The illustrative embodiment provides a computationally-efficient technique for reducing the number of possible positions that have to be analyzed. In particular, the illustrative embodiment eliminates possible positions for the mobile unit from consideration by considering which signals the mobile unit can—and cannot—receive and the knowledge of where those signals can and cannot be received.
REFERENCES:
patent: 3706969 (1972-12-01), Paredes
patent: 4792796 (1988-12-01), Bradshaw et al.
patent: 6091716 (2000-07-01), Gorday et al.
patent: 6108553 (2000-08-01), Silventoinen et al.
patent: 6243568 (2001-06-01), Detlef et al.
patent: 6308072 (2001-10-01), Labedz et al.
patent: 6327471 (2001-12-01), Song
patent: 6426709 (2002-07-01), Becker et al.
patent: 6556822 (2003-04-01), Matsumoto
patent: 7035632 (2006-04-01), Gutowski
patent: 2001/0022558 (2001-09-01), Karr, Jr. et al.
patent: 2003/0129992 (2003-07-01), Koorapaty et al.
patent: 2006/0025158 (2006-02-01), Leblanc et al.
patent: 02044929 (1990-02-01), None
Gaspard, Ingo et al., “Position Assignment in Digital Cellular Mobile Radio Networks (e.g., GSM) Derived from Measurements at the Protocol Interface,” IEEE (O-7803-3659-3/79) (1997), pp. 592-596.
Hellebrandt, Martin et al., “Estimating Position and Velocity of Mobiles in a Cellular Network,” IEEE Trans. on Vehicular Technology, 46 (1) Feb. 1997, pp. 65-71.
Jimenez, J. et al., “Mobile Location Using Coverage Information: Theoretical Analysis and Results,” European Cooperation in the Field of Scientific and Technical Reasearch (Euro-Cost) 043 (Apr. 1999) pp. 1-9.
Koshima, Hiroaki et al., “Personal Locator Services Emerge,” IEEE Spectrum Feb. 2000, pp. 41-48.
Dr. Heiko Schmitz, et al., A New Method for Positioning of Mobile Users by Comparing a Time Series of Measured Reception Power Levels with Predictions, IEEE, 0-7803-7757-5/03, pp. 1993-1997, 2003.
Martin Robert Lewis
Perez-Breva Luis
Spain, Jr. David Stevenson
DeMont & Breyer LLC
Phan Huy Q
Polaris Wireless, Inc.
Trost William
LandOfFree
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