Location determination using RF fingerprints

Details Location determination using RF fingerprints Location determination using RF fingerprints

2007-01-23

2007-01-23

Trost, William (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S404200, C455S456500, C455S456600

Reexamination Certificate

active

10910511

ABSTRACT:
A method for determining the location of a mobile unit (MU) in a wireless communication system and presenting it to a remote party. The location of a remote MU is determined by comparing a snapshot of a predefined portion of the radio-frequency (RF) spectrum taken by the MU to a reference database containing multiple snapshots taken at various locations. The result of the comparison is used to determine if the MU is at a specific location. The comparison may be made in the MU, or at some other location situated remotely from the MU. In the latter case, sufficient information regarding the captured fingerprint is transmitted from the MU to the remote location. The database may be pre-compiled or generated on-line.

REFERENCES:
patent: 5293642 (1994-03-01), Lo
patent: 5404376 (1995-04-01), Dent
patent: 5481588 (1996-01-01), Rickli et al.
patent: 5490288 (1996-02-01), Wiatrowski
patent: 5508707 (1996-04-01), LeBlanc et al.
patent: 5561839 (1996-10-01), Osterberg et al.
patent: 5564079 (1996-10-01), Olsson
patent: 5657487 (1997-08-01), Doner
patent: 5717406 (1998-02-01), Sanderford et al.
patent: 5987306 (1999-11-01), Nilsen et al.
patent: 6006089 (1999-12-01), Sasaki et al.
patent: 6026304 (2000-02-01), Hilsenrath et al.
patent: 6064339 (2000-05-01), Wax et al.
patent: 6108557 (2000-08-01), Wax et al.
patent: 6134448 (2000-10-01), Shoji et al.
patent: 6236365 (2001-05-01), LeBlanc et al.
patent: 6236849 (2001-05-01), Reudink et al.
patent: 6249252 (2001-06-01), Dupray
patent: 6263208 (2001-07-01), Chang et al.
patent: 6275190 (2001-08-01), Sugiura et al.
patent: 6308071 (2001-10-01), Kalev
patent: 6362783 (2002-03-01), Sugiura et al.
patent: 6393294 (2002-05-01), Perex-Breva et al.
patent: 6496701 (2002-12-01), Chen et al.
patent: 6564065 (2003-05-01), Chang et al.
patent: 6782262 (2004-08-01), Lundborg
patent: 6799046 (2004-09-01), Tang
patent: 2003/0043073 (2003-03-01), Gray
patent: 0982964 (1998-08-01), None
patent: 0982964 (2000-01-01), None
patent: 0982964 (2000-01-01), None
patent: 2329801 (1999-03-01), None
patent: 2-44929 (1990-02-01), None
patent: WO 97/28456 (1997-08-01), None
patent: WO 98/10538 (1998-03-01), None
patent: WO 98/15149 (1998-04-01), None
patent: WO 00/50918 (2000-08-01), None
I. Gaspard et al., “Position Assignment in Digital Cellular Mobile Radio Networks (e.g., GSM) Derived from Measurements at the Protocol Interface,” IEEE 1997, pp. 592-596.
M. Hellebrandt et al. “Estimating Position and Velocity of Mobiles in a Cellular Radio Network,” IEEE Trans. Vehicular Tech. 1997, pp. 65-71.
J. Jimenez et al., “Mobile Location Using Coverage Information: Theoretical Analysis and Results,” EURO-COST, Apr. 1999, pp. 1-9.
H. Koshima et al., “Personal Locator Services Emerge,” IEEE Spectrum, 2000, pp. 41-48.
L. Cong et al., “Hybrid TDOA/AOA Mobile User Location for Wideband CDMA Cellular Systems,” IEEE Trans. Wireless Comm, 2000, pp. 439-447.

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