Method and apparatus for locating a wireless device

Telecommunications – Radiotelephone system – Emergency or alarm communication

Reexamination Certificate

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Details

C455S404100, C455S456100, C455S456300, C455S521000

Reexamination Certificate

active

07050786

ABSTRACT:
Disclosed is a method and apparatus for locating a wireless device especially useful for locating a cellular telephone making a call from an unknown location. The call may be a request for emergency assistance, or for location-based commercial services, for example. Various embodiments may optionally include a mobile location component, a cellular telephone enabled to chirp-on-demand, and/or an interferometer link. A mobile location component may include a directional antenna. The directional antenna may be mounted on an antenna boom on top of an emergency vehicle, for example. The mobile location component may alternately or additionally comprise a hand-held unit. System elements may cooperate to generate a situation awareness map or other display. The mobile location component may be moved in the general direction of a first location calculation associated with a first circular error of probability. After being moved in the general direction, the mobile location component may cooperate with other elements to determine a second location calculation associated with a second circular error of probability. Second and subsequent location calculations are of increasing precision, enabling an emergency vehicle or attendant to zero in on a cellular telephone.

REFERENCES:
patent: 4873520 (1989-10-01), Fisch et al.
patent: 4888595 (1989-12-01), Friedman
patent: 5432841 (1995-07-01), Rimer
patent: 5535278 (1996-07-01), Cahn et al.
patent: 5631642 (1997-05-01), Brockelsby et al.
patent: 5701328 (1997-12-01), Schuchman et al.
patent: 5758288 (1998-05-01), Dunn et al.
patent: 5767788 (1998-06-01), Ness
patent: 5815814 (1998-09-01), Dennison et al.
patent: 5873040 (1999-02-01), Dunn et al.
patent: 5917449 (1999-06-01), Sanderford et al.
patent: 5945919 (1999-08-01), Trask
patent: 6026304 (2000-02-01), Hilsenrath et al.
patent: 6031490 (2000-02-01), Forssen et al.
patent: 6083248 (2000-07-01), Thompson
patent: 6084547 (2000-07-01), Sanderford et al.
patent: 6112095 (2000-08-01), Wax et al.
patent: 6141558 (2000-10-01), Chen
patent: 6236365 (2001-05-01), LeBlanc et al.
patent: 6240365 (2001-05-01), Bunn
patent: 6249252 (2001-06-01), Dupray
patent: 6288676 (2001-09-01), Maloney
patent: 6314281 (2001-11-01), Chao et al.
patent: 6329904 (2001-12-01), Lamb
patent: 6421009 (2002-07-01), Suprunov
patent: 6741863 (2004-05-01), Chiang et al.
patent: 6792262 (2004-09-01), Yamanaka et al.
patent: 2001/0018639 (2001-08-01), Bunn
patent: 2001/0036833 (2001-11-01), Koshima et al.
patent: 2002/0005804 (2002-01-01), Sunprunov
patent: 2002/0027512 (2002-03-01), Horita et al.
patent: 2002/0122003 (2002-09-01), Patwari et al.
patent: 2003/0222820 (2003-12-01), Karr et al.
patent: 2004/0029558 (2004-02-01), Liu
Ian Lacy et al., “Will Location-based Services Be the Next Golden Child?”, Location, Location, Location, Kellogg Tech Venture 2001—Location Based Services, Apr. 15, 2001.
“EMS Communications Policy Manual”, Montgomery County, Pennsylvania, Department of Public Safety, Division of Emergency Medical Services, Montgomery County EMS Communications Manual, Sep. 2002.
“Aircraft Rescue and Firefighting Communications”, Advisory Circular, U.S. Department of Transportation, Federal Aviation Administration, Jul. 1, 1999.
Tomi Sarvanko, “Positioning Standards E911, E112 and UMTS”.
“Wireless Evolution”.

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