Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2007-02-23
2008-12-30
Le, Danh C (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S457000, C342S450000, C707S793000
Reexamination Certificate
active
07471954
ABSTRACT:
A method of estimating a location of a WLAN-enabled user-device in a WLAN-based positioning system is provided. The WLAN-enabled device receives signals transmitted by WLAN-enabled access points in range of the WLAN-enabled user-device so that observed WLAN-enabled access points identify themselves. The method includes accessing a master database that associates WLAN-enabled access points with corresponding audited locations as determined by an audit of a relatively large geographic area and obtaining location information for any identified WLAN-enabled access point. The method includes accessing a supplemental database to obtain inferred location information corresponding to any identified WLAN-enabled access point. The supplemental database has a relatively small set of WLAN-enabled access points and corresponding inferred locations. The inferred locations are inferred based on input by a user of the WLAN-based positioning system. The method includes estimating a location of the WLAN-enabled user-device based on the audited location information and the inferred location information.
REFERENCES:
patent: 6272405 (2001-08-01), Kubota et al.
patent: 6678611 (2004-01-01), Khavakh et al.
patent: 6888811 (2005-05-01), Eaton et al.
patent: 6978023 (2005-12-01), Dacosta
patent: 7123928 (2006-10-01), Moeglein et al.
patent: 7167715 (2007-01-01), Stanforth
patent: 7167716 (2007-01-01), Kim et al.
patent: 7271765 (2007-09-01), Stilp et al.
patent: 7305245 (2007-12-01), Alizadeh-Shabdiz et al.
patent: 7403762 (2008-07-01), Morgan et al.
patent: 2002/0184331 (2002-12-01), Blight et al.
patent: 2003/0114206 (2003-06-01), Timothy et al.
patent: 2003/0125045 (2003-07-01), Riley et al.
patent: 2003/0225893 (2003-12-01), Roese et al.
patent: 2004/0019679 (2004-01-01), E et al.
patent: 2004/0039520 (2004-02-01), Khavakh et al.
patent: 2004/0087317 (2004-05-01), Caci
patent: 2004/0205234 (2004-10-01), Barrack et al.
patent: 2005/0020266 (2005-01-01), Backes et al.
patent: 2005/0037775 (2005-02-01), Moeglein et al.
patent: 2005/0055374 (2005-03-01), Sato
patent: 2005/0192024 (2005-09-01), Sheynblat
patent: 2006/0009235 (2006-01-01), Sheynblat et al.
patent: 2006/0078122 (2006-04-01), Dacosta
patent: 2006/0095348 (2006-05-01), Jones et al.
patent: 2006/0095349 (2006-05-01), Morgan et al.
patent: 2006/0106850 (2006-05-01), Morgan et al.
patent: 2006/0197704 (2006-09-01), Luzzatto et al.
patent: 2006/0200843 (2006-09-01), Morgan et al.
patent: 2006/0217131 (2006-09-01), Alizadeh-Shabdiz et al.
patent: 2006/0240840 (2006-10-01), Morgan et al.
patent: 2006/0270421 (2006-11-01), Phillips et al.
patent: 2007/0004427 (2007-01-01), Morgan et al.
patent: 2007/0004428 (2007-01-01), Morgan et al.
patent: 2007/0126635 (2007-06-01), Houri
patent: 2007/0150516 (2007-06-01), Morgan et al.
patent: 2007/0178911 (2007-08-01), Baumeister et al.
patent: 2007/0184846 (2007-08-01), Horton et al.
patent: 2007/0202888 (2007-08-01), Brachet et al.
patent: 2007/0210961 (2007-09-01), Romijn
patent: 2007/0232892 (2007-10-01), Hirota
patent: 2007/0258408 (2007-11-01), Alizadeh-Shabdiz et al.
patent: 2007/0258409 (2007-11-01), Alizadeh-Shabdiz et al.
patent: 2007/0258420 (2007-11-01), Alizadeh-Shabdiz et al.
patent: 2007/0258421 (2007-11-01), Alizadeh-Shabdiz et al.
patent: 2007/0259624 (2007-11-01), Alizadeh-Shabdiz et al.
patent: 2008/0008117 (2008-01-01), Alizadeh-Shabdiz
patent: 2008/0008118 (2008-01-01), Alizadeh-Shabdiz
patent: 2008/0008119 (2008-01-01), Alizadeh-Shabdiz
patent: 2008/0008120 (2008-01-01), Alizadeh-Shabdiz
patent: 2008/0008121 (2008-01-01), Alizadeh-Shabdiz
patent: 2008/0033646 (2008-02-01), Morgan et al.
patent: 2008/0045234 (2008-02-01), Reed
patent: 2008/0132170 (2008-06-01), Alizadeh-Shabdiz et al.
patent: 2008/0139217 (2008-06-01), Alizadeh-Shabdiz et al.
patent: 2008/0176583 (2008-07-01), Brachet et al.
U.S. Appl. No. 11/625,450, filed TBD, Alizadeh-Shabdiz.
International Search Report, International Application No. PCT/US07/62721, mailed Nov. 9, 2007. (3 pages).
U.S. Appl. No. 11/625,450, Alizadeh-Shabdiz.
Griswold et al., “ActiveCampus—Sustaining Educational Communities through Mobile Technology.” UCSD CSE Technical Report #CS200-0714, 2002.
Hazas, M., et al., “Location-Aware Computing Comes of Age,” IEEE, vol. 37, Feb. 2004.
Hellebrandt, M., et al., “Estimating Position and Velocity of Mobile in a Cellular Radio Network,” IEEE Transactions on Vehicular Technology, vol. 46, No. 1, Feb. 1997.
International Search Report, International Application No. PCT/US05/39208, mailed Jan. 29, 2008. (3 pages).
Kim, M., et al., “Risks of using AP locations discovered through war driving,” IEEE Transactions on Vehicular Technology, vol. 26, No. 1, Feb. 1997.
Kirsner, S., “One more way to find yourself,” The Boston Globe, May 23, 2005, Retrieved from www.boston.com.
Krumm, J., et al., “LOCADIO: Inferring Motion and Location from WLAN Signal Strengths,” Proc. of Mobiquitous, Aug. 22-26, 2004.
LaMarca, A., et al., “Place Lab: Device Positioning Using Radio Beacons in the Wild,” Intel Corporation, 2004.
Muthukrishnan, K., et al., “Towards Smart Surroundings: Enabling Techniques and Technologies for Localization,” Lecture Notes in Computer Science, vol. 3479, May 2005.
LaMarca, A., et al., “Self-Mapping in 802.11 Location Systems,” Intel Corporation, 2005.
Alizadeh-Shabdiz Farshid
Brachet Nicolas
Le Danh C
Skyhook Wireless, Inc.
Wilmer Cutler Pickering Hale & Dorr LLP
LandOfFree
Methods and systems for estimating a user position in a WLAN... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods and systems for estimating a user position in a WLAN..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and systems for estimating a user position in a WLAN... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4027428