Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2011-04-05
2011-04-05
Ly, Nghi H (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S456300
Reexamination Certificate
active
07920875
ABSTRACT:
Techniques for locating wireless devices involve a wireless device making measurements of signals transmitted by geographically distributed base stations within a wireless network. If some key site information is known about these transmitters, such as the transmitter location, transmit signal power, signal propagation, and transmit signal timing, measurements of these transmit signals by a device to be located can be used to determine the position of the device. In this example, all information exchange between the device and the location node is facilitated by a data link that is not provided by the wireless network providing signals used in the location estimation process. Accordingly, devices may be located based on downlink signal measurements made by the devices, where the devices are not part of the wireless network, are not provided wireless service by the network, and do not possess the ability to transmit signals to the wireless network, and where communication resources of the wireless network are not consumed to facilitate location.
REFERENCES:
patent: 5045861 (1991-09-01), Duffett-Smith
patent: 5293645 (1994-03-01), Sood
patent: 5646632 (1997-07-01), Khan et al.
patent: 6094168 (2000-07-01), Duffett-Smith et al.
patent: 6529165 (2003-03-01), Duffett-Smith et al.
patent: 6812824 (2004-11-01), Goldinger et al.
patent: 6937866 (2005-08-01), Duffett-Smith et al.
patent: 6952158 (2005-10-01), Kennedy, Jr.
patent: 7110774 (2006-09-01), Davis et al.
patent: 7116988 (2006-10-01), Dietrich et al.
patent: 7123928 (2006-10-01), Moeglein et al.
patent: 7167713 (2007-01-01), Anderson
patent: 7383049 (2008-06-01), Deloach
patent: 2001/0034223 (2001-10-01), Rieser et al.
patent: 2002/0094820 (2002-07-01), Keranen et al.
patent: 2002/0094821 (2002-07-01), Kennedy, Jr.
patent: 2002/0160788 (2002-10-01), Duffett-Smith et al.
patent: 2004/0046693 (2004-03-01), Ogino et al.
patent: 2004/0259565 (2004-12-01), Lucidarme
patent: 2005/0003832 (2005-01-01), Osafune et al.
patent: 2005/0181805 (2005-08-01), Gallagher
patent: 2005/0233746 (2005-10-01), Laroia et al.
patent: 2006/0019679 (2006-01-01), Rappaport et al.
patent: 2006/0025154 (2006-02-01), Alapuranen et al.
patent: 2006/0025158 (2006-02-01), Leblanc et al.
patent: 2006/0293066 (2006-12-01), Edge et al.
patent: 2007/0060172 (2007-03-01), Bahl
patent: 2008/0095131 (2008-04-01), Aljadeff et al.
patent: 2008/0132244 (2008-06-01), Anderson
patent: 2008/0132247 (2008-06-01), Anderson
patent: 2119259 (2009-11-01), None
patent: WO 2008/085439 (2008-07-01), None
patent: WO 2008/070494 (2008-08-01), None
Patent Cooperation Treaty, “International Search Report / Written Opinion,” International Searching Authority, May 20, 2008, 11 pages.
U.S. Appl. No. 11/533,310, filed Sep. 19, 2006, Ward et al.
Patent Cooperation Treaty: International Search Report, International Searching Authority, May 16, 2008, PCT/US07/85729.
United States Patent and Trademark Office: Non-Final Office Action dated Mar. 24, 2009, U.S. Appl. No. 11/607,420.
United States Patent and Trademark Office: Final Office Action dated Jul. 22, 2009, U.S. Appl. No. 11/607,420.
PCT Written Opinion of the International Searching Authority mailed May 16, 2008, in corresponding International Application PCT/US07/85729.
PCT International Preliminary Report on Patentability issued Jun. 30, 2009, in corresponding International Application PCT/US2007/026255.
Dean, Jr. Joseph
Ly Nghi H
TruePosition, Inc.
Woodcock & Washburn LLP
LandOfFree
Subscriptionless location of wireless devices does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Subscriptionless location of wireless devices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Subscriptionless location of wireless devices will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2663979