Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-02-14
2006-02-14
Kincaid, Lester G. (Department: 2687)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S456100, C455S404200, C701S213000, C342S457000
Reexamination Certificate
active
06999780
ABSTRACT:
A method and system for determining the three-dimensional location of a mobile wireless device. In one implementation, the device is a cellular telephone making a 911 call from one floor of a multi-story building. An embodiment of the method of the invention includes establishing a database that associates transmission metrics with altitudes of x-y coordinate locations having more than one altitude at which the mobile wireless device could be located, receiving a communication from the mobile wireless device, determining an x-y coordinate location of the mobile wireless device, measuring a transmission metric of the mobile wireless device, and consulting the database to determine the altitude from the x-y coordinate location and the measured transmission metric. The transmission metric could be, for example, the transmission time or angle of arrival of a wireless signal received from the mobile wireless device.
REFERENCES:
patent: 6061018 (2000-05-01), Sheynblat
patent: 2003/0109988 (2003-06-01), Geissler et al.
patent: 2003/0222819 (2003-12-01), Karr et al.
patent: 2004/0002344 (2004-01-01), Moeglein et al.
patent: 2004/0266457 (2004-12-01), Dupray
patent: 2005/0001720 (2005-01-01), Mason et al.
Associated Press and Atlanta Journal Constitution, “Wireless Firms Lag on Location Technology”, (Apr. 14, 2001).
Khokhar, S., “Choose Wisely!: Which Location-Estimation Technologies Meet Market Needs?” (2001) at www.geoplace.com/bg/2001/0401/0401tt.asp.
Vitaliano, F., “TDMA vs. CDMA: How the Feds Blew It, Once Again”, (1996) at www.vxm.com/21R.62.html.
Federal Communications Commission Public Notice “Information Sought on Methods for Verifying Compliance with E911 Accuracy Standards” Oct. 8, www.fcc.gov/Bureaus/Engineering—Technology/Public—Notices/199/da99.
Bonsor, K. “How Location Tracking Will Work,” (1998-2002) at www.hotstuffworks.com/location-tracking.htm/printable.
Krasner, N. “Homing in On Wireless Location,” (2002) at www.commsdesign.com/main/1999/06/9906feat1.htm.
BellSouth Intellectual Property Corporation
Doan Phuoc
Kincaid Lester G.
Merchant & Gould
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