Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2002-04-24
2009-11-24
Eng, George (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C342S358000, C342S357490, C701S213000, C455S404200
Reexamination Certificate
active
07623871
ABSTRACT:
Techniques to determine a position estimate for a wireless terminal. An accurate position estimate for the initially obtained (e.g., based on a first (accurate) position determination sub-system). For each of one or more transmitters (e.g., base stations) in a second (less accurate) position determination sub-system, an “expected” pseudo-range is computed based on the accurate position estimate for the terminal and the base station location, a “measured” pseudo-range is also obtained, and a pseudo-range residual is then determined based on the expected pseudo-range and the measured pseudo-range. Therefore, to determine an updated position estimate for the terminal, measured pseudo-ranges are obtained for a sufficient number of transmitters. The measured pseudo-range for each base station may be corrected based on the associated residual. The updated position estimate is then determined based on the corrected pseudo-ranges for these transmitters.
REFERENCES:
patent: 5526357 (1996-06-01), Jandrell
patent: 5563607 (1996-10-01), Loomis et al.
patent: 5717406 (1998-02-01), Sanderford et al.
patent: 5774829 (1998-06-01), Cisneros et al.
patent: 5786773 (1998-07-01), Murphy
patent: 5899957 (1999-05-01), Loomis
patent: 5913170 (1999-06-01), Wortham
patent: 5923286 (1999-07-01), Divakaruni
patent: 5995043 (1999-11-01), Murphy
patent: 5999124 (1999-12-01), Sheynblat
patent: 6075987 (2000-06-01), Camp et al.
patent: 6166685 (2000-12-01), Soliman
patent: 6195046 (2001-02-01), Gilhousen
patent: 6212391 (2001-04-01), Saleh et al.
patent: 6285316 (2001-09-01), Nir et al.
patent: 6298229 (2001-10-01), Tomlinson et al.
patent: 6393291 (2002-05-01), Hwang
patent: 6408178 (2002-06-01), Wickstrom et al.
patent: 6411811 (2002-06-01), Kingdon et al.
patent: 6420999 (2002-07-01), Vayanos
patent: 6430416 (2002-08-01), Loomis
patent: 6445927 (2002-09-01), King et al.
patent: 6449485 (2002-09-01), Anzil
patent: 6538601 (2003-03-01), Bruno et al.
patent: 6618671 (2003-09-01), Dooley et al.
patent: 6636744 (2003-10-01), Da
patent: 6671620 (2003-12-01), Garin et al.
patent: 6853916 (2005-02-01), Fuchs et al.
patent: 2002/0067712 (2002-06-01), Bergkvist
patent: 2002/0135510 (2002-09-01), Bruno et al.
patent: 2003/0119496 (2003-06-01), Gaal et al.
patent: 1148344 (2001-10-01), None
patent: 1148344 (2001-10-01), None
patent: 2000244957 (2000-09-01), None
Yamamoto, R. et al: “Position Location Technologies Using Signal Strength In Cellular Systems”, IEEE VTS 53rd, Vehicular Technology Conference, New York, NY. vol. 4 of 4, May 6, 2001, pp. 2570-2574.
International Search Report-PCT/US03/012195, international Search Authority, European Patent Office, Sep. 4, 2003.
Eng George
Greenhaus Bruce
Gunderson Linda G.
Miller Brandon J
QUALCOMM Incorporated
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