LOCATION ESTIMATION OF WIRELESS TERMINALS THROUGH PATTERN MATCHING OF DEDUCED AND EMPIRICAL SIGNAL-STRENGTH MEASUREMENTS - Patent 1647160

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EP 1 647 160 A1

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(43)	Date of publication:
	19.04.2006 Bulletin 2006/16

(21)	Application number: 04778274.3

(22)	Date of filing: 14.07.2004

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International Patent Classification (IPC):

H04Q 7/38^(1995.01)

G01S 5/02^(1968.09)

(86)	International application number:
	PCT/US2004/022676

(87)	International publication number:
	WO 2005/011321 (03.02.2005 Gazette 2005/05)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

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Priority:

19.07.2003 US 488866 P
23.09.2003 US 668634
12.03.2004 US 798988

(71)	Applicant: Polaris Wireless, Inc.
	Santa Clara, CA 95054 (US)

(72)	Inventors:
	SPAIN, David, Stevenson, Jr. Portola Valley, CA 94028 (US) MARTIN, Robert, Lewis Antioch, CA 94509 (US) BHATTACHARYA, Tarun, Kumar San Jose, CA 95129 (US)

(74)	Representative: McCallum, Graeme David et al
	Lloyd Wise, McNeight & Lawrence c/o Commonwealth House 1-19 New Oxford Street GB-London WC1A 1LW GB-London WC1A 1LW (GB)

(54)	LOCATION ESTIMATION OF WIRELESS TERMINALS THROUGH PATTERN MATCHING OF DEDUCED AND EMPIRICAL SIGNAL-STRENGTH MEASUREMENTS