Estimation of position using WLAN access point radio...

Multiplex communications – Diagnostic testing – Determination of communication parameters

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C370S338000

Reexamination Certificate

active

07916661

ABSTRACT:
A method for estimating position using WLAN access point radio propagation characteristics in a WLAN location based service is provided. A location-based services system has a plurality of Wi-Fi access points in a target area. The Wi-Fi access points are positioned at geographic locations and have signal coverage areas. A method of characterizing at least one of the Wi-Fi access points comprises determining the geographic location of the Wi-Fi access point, dividing the signal coverage area of the Wi-Fi access point into at least one section, and determining radio propagation characteristics for each section. The radio propagation characteristics of each section characterize a radio channel of the Wi-Fi access point, and the characterization can be used in a location algorithm.

REFERENCES:
patent: 7123928 (2006-10-01), Moeglein et al.
patent: 7305245 (2007-12-01), Alizadeh-Shabdiz et al.
patent: 7397424 (2008-07-01), Houri
patent: 7403762 (2008-07-01), Morgan et al.
patent: 7414988 (2008-08-01), Jones et al.
patent: 7433694 (2008-10-01), Morgan et al.
patent: 7433696 (2008-10-01), Dietrich et al.
patent: 7471954 (2008-12-01), Brachet et al.
patent: 7474646 (2009-01-01), Tamaki
patent: 7474897 (2009-01-01), Morgan et al.
patent: 7493127 (2009-02-01), Morgan et al.
patent: 7502620 (2009-03-01), Morgan et al.
patent: 7515578 (2009-04-01), Alizadeh-Shabdiz et al.
patent: 7551579 (2009-06-01), Alizadeh-Shabdiz et al.
patent: 7551929 (2009-06-01), Alizadeh-Shabdiz et al.
patent: 2002/0108371 (2002-08-01), Rouse et al.
patent: 2003/0118015 (2003-06-01), Gunnarsson et al.
patent: 2004/0057408 (2004-03-01), Gray
patent: 2004/0203880 (2004-10-01), Riley
patent: 2004/0203904 (2004-10-01), Gwon et al.
patent: 2005/0003827 (2005-01-01), Whelan
patent: 2005/0037775 (2005-02-01), Moeglein et al.
patent: 2005/0073980 (2005-04-01), Thomson et al.
patent: 2005/0192024 (2005-09-01), Sheynblat
patent: 2005/0208919 (2005-09-01), Walker et al.
patent: 2006/0009235 (2006-01-01), Sheynblat et al.
patent: 2006/0072502 (2006-04-01), Crandall et al.
patent: 2006/0095348 (2006-05-01), Jones et al.
patent: 2006/0095349 (2006-05-01), Morgan et al.
patent: 2006/0197704 (2006-09-01), Luzzatto et al.
patent: 2006/0217131 (2006-09-01), Alizadeh-Shabdiz et al.
patent: 2006/0229088 (2006-10-01), Walter
patent: 2007/0004428 (2007-01-01), Morgan et al.
patent: 2007/0018891 (2007-01-01), Golden et al.
patent: 2007/0121560 (2007-05-01), Edge
patent: 2007/0126635 (2007-06-01), Houri
patent: 2007/0150516 (2007-06-01), Morgan et al.
patent: 2007/0258408 (2007-11-01), Alizadeh-Shabdiz et al.
patent: 2007/0258420 (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: 2008/0108319 (2008-05-01), Gallagher
patent: 2008/0108371 (2008-05-01), Alizadeh-Shabdiz et al.
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.
patent: 2008/0248741 (2008-10-01), Alizadeh-Shabdiz
patent: 2008/0248808 (2008-10-01), Alizadeh-Shabdiz
patent: 2009/0075672 (2009-03-01), Jones et al.
patent: 2009/0149197 (2009-06-01), Morgan et al.
patent: 2009/0154371 (2009-06-01), Alizadeh-Shabdiz et al.
patent: 2009/0175189 (2009-07-01), Alizadeh-Shabdiz et al.
patent: 2009/0252138 (2009-10-01), Alizadeh-Shabdiz et al.
patent: 2009/0303112 (2009-12-01), Alizadeh-Shabdiz
patent: 2009/0303113 (2009-12-01), Alizadeh-Shabdiz
patent: 2009/0303114 (2009-12-01), Alizadeh-Shabdiz
patent: 2009/0303115 (2009-12-01), Alizadeh-Shabdiz
patent: 2009/0303119 (2009-12-01), Alizadeh-Shabdiz
patent: 2009/0303120 (2009-12-01), Alizadeh-Shabdiz
patent: 2009/0303121 (2009-12-01), Alizadeh-Shabdiz
patent: 2009/0310585 (2009-12-01), Alizadeh-Shabdiz
patent: 2009/0312035 (2009-12-01), Alizadeh-Shabdiz
patent: 2009/0312036 (2009-12-01), Alizadeh-Shabdiz
patent: 2010/0052983 (2010-03-01), Alizadeh-Shabdiz
patent: 1612999 (2006-01-01), None
patent: WO-03102620 (2003-12-01), None
patent: WO-2005/121829 (2005-12-01), None
patent: WO-2006/070211 (2006-07-01), None
patent: WO-2006/117587 (2006-11-01), None
patent: WO-2007/0133967 (2007-11-01), None
patent: WO-2007/133968 (2007-11-01), None
patent: WO-2008/057737 (2008-05-01), None
“Delta Encoding”, Wikipedia, retrieved from <http://en.wikipedia.org/wiki/Delta—encoding>, on Mar. 1, 2006. (1 page).
“Terminal Equipment and Protocols for Telematic Services: Information Technology-Digital Compression and Coding of Continuous-Tome Still Images—Requirements and Guidelines,” International Telecommunication Union, Sep. 1992.
Griswold et al., “ActiveCampus—Sustaining Educational Communities through Mobile Technology.” UCSD CSE Technical Report #CS200-0714, 2002. (19 pages).
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.
http://mathworld.wolfram.com/ChinesePostmanProblem.html.
International Search Report and Written Opinion, International Patent Application No. PCT/US07/68248, mailed Aug. 6, 2008 (6 pages).
Kawabata, K. et al., “Estimating Velocity Using Diversity Reception,” IEEE, 1994. (371-374).
Kim, M., et al., “Risks of using AP locations discovered through war driving,”; Pervasive Computing; May 19, 2006; p. 67-81 (15 pages).
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 Wi-Fi Signal Strengths,” First Annual International Conference on Mobile and Ubiquitous Systems: Networking and Services, Aug. 2004.
Kwan, M., “Graphic Programming Using Odd or Even Points,” Chinese Math. 1, 1960. (273-277).
LaMarca, A., et al., “Place Lab: Device Positioning Using Radio Beacons in the Wild,” Pervasive Computing; May 3, 2005; p. 116-133; (18 pages).
Muthukrishnan, K., et al., “Towards Smart Surroundings: Enabling Techniques and Technologies for Localization,” Lecture Notes in Computer Science, vol. 3479, May 2005, 11 pages.
Wikipedia entry for “Huffman coding,” http://en.wikipedia.org, 2006.
Supplemental European Search Report and Written Opinion for EP07783288 dated Jun. 3, 2010, 7 pages.
European Search Report for European Application No. 07868513, dated Jun. 7, 2010, 5 pages.
International Search Report and Written Opinion of the International Searching Authority, the United States Patent and Trademark Office, for International Application No. PCT/US2007/068251, mailing date of Aug. 25, 2008, 6 pages.
International Search Report and Written Opinion of the International Searching Authority, the United States Patent and Trademark Office, for International Application No. PCT/US2010/041279, mailing date of Sep. 1, 2010, 7 pages.
International Search Report, International Patent Application No. PCT/US07/81929, mailed Apr. 16, 2008 (2 pages).
Supplementary European Search Report and Written Opinion for EP07761894, dated Jun. 3, 2010, 8 pages.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Estimation of position using WLAN access point radio... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Estimation of position using WLAN access point radio..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Estimation of position using WLAN access point radio... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2716053

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.