Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2004-06-24
2009-11-24
Gesesse, Tilahun (Department: 2618)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S404200, C342S357490, C340S539110
Reexamination Certificate
active
07623872
ABSTRACT:
A method for use in a wireless communication system with a network overlay geolocation system having a sparse deployment network in which base stations of the wireless communication system may or may not have a co-located wireless location sensors (WLS). The method enables detection and measurement of a target mobile's signal independently from a primary WLS located at the base station serving the target mobile, which enable location estimated in previous “no location” areas. The method selects based on predetermined criteria from one or more of several techniques that aid in the detection and determining a location for the target mobile. The method selects from timing advance, power levels, pattern matching, EOTD, speed, and pseudo range measurements to estimate the location of the mobile. The method also uses ambiguity function processing to detect the signal and measure an attribute of the signal.
REFERENCES:
patent: 4783744 (1988-11-01), Yueh
patent: 5317323 (1994-05-01), Kennedy, Jr. et al.
patent: 5327144 (1994-07-01), Stilp et al.
patent: 5465289 (1995-11-01), Kennedy, Jr.
patent: 5506863 (1996-04-01), Meidan
patent: 5600706 (1997-02-01), Dunn et al.
patent: 5675344 (1997-10-01), Tong et al.
patent: 5870029 (1999-02-01), Otto et al.
patent: 5970413 (1999-10-01), Gilhousen
patent: 5973643 (1999-10-01), Hawkes et al.
patent: 6144711 (2000-11-01), Raleigh et al.
patent: 6188351 (2001-02-01), Bloebaum
patent: 6212319 (2001-04-01), Saleh et al.
patent: 6288676 (2001-09-01), Maloney
patent: 6295455 (2001-09-01), Fischer et al.
patent: 6311043 (2001-10-01), Haardt et al.
patent: 6334059 (2001-12-01), Stilp et al.
patent: 6470195 (2002-10-01), Meyer
patent: 6477161 (2002-11-01), Hudson et al.
patent: 6501955 (2002-12-01), Durrant et al.
patent: 6529165 (2003-03-01), Duffett-Smith et al.
patent: 6553322 (2003-04-01), Ignagni
patent: 6782264 (2004-08-01), Anderson et al.
patent: 6834234 (2004-12-01), Scherzinger et al.
patent: 6839539 (2005-01-01), Durrant et al.
patent: 6845240 (2005-01-01), Carlson et al.
patent: 6922170 (2005-07-01), Alexander, Jr.
patent: 7162252 (2007-01-01), Kennedy, Jr.
patent: 7200392 (2007-04-01), Kennedy et al.
patent: 7379757 (2008-05-01), Kennedy et al.
patent: 7429951 (2008-09-01), Kennedy et al.
patent: 2002/0039904 (2002-04-01), Anderson
patent: 2002/0094821 (2002-07-01), Kennedy, Jr.
patent: 2002/0128020 (2002-09-01), Carlson et al.
patent: 2003/0083008 (2003-05-01), Baker et al.
patent: 2003/0162550 (2003-08-01), Kuwahara et al.
patent: 2003/0190919 (2003-10-01), Niemenmaa
patent: 2003/0220075 (2003-11-01), Baker et al.
patent: 2004/0043775 (2004-03-01), Kennedy, Jr. et al.
patent: 2004/0147221 (2004-07-01), Sheynblat et al.
patent: 60-347529 (1994-12-01), None
Leshem, et al., “Array Calibration in the Presence of Multipath,” IEEE Transactions of Signal Processing, vol. 48, No. 1, pp. 53-59, Jan. 1, 2000.
Ziskind, I., Wax, M., “Maxmium likelihood localization of multiple sources by alternating projection”, IEEE Trans. Acoust., Speech, Signal Process. vol. 36, No. 2 (Oct. 1988), 1553-1560.
Van Der Veen, M, Papadias, C.B., Paulraj, A.J., “Joint angle and delay estimation” IEEE Communications Letters vol. 1-1 (Jan. 1997), 12-14.
Schmidt, R.O. “Multiple emitter location and signal parameter estimation” Proc. RADC Spectrum Estimation Workshop, (Mar. 1999), 243-258.
Young-Fang Chen, Michael D. Zoltowski “Joint Angle and Delay estimation of DS-CDMA communication systems with Application to Reduced Dimension Space-time 2D Rake Receivers”, IEEE Transactions on Signal Processing.
Paulraj, A.J., Papadias, C.B., “Space-Time Signal Processing for Wireless Communications”, IEEE Signal Processing Magazine, vol. 11 (Nov. 1997), 49-83.
Paulraj, A.J., Papadias, C.B., “Space-Time Signal Processing for Wireless Communications: A Survey” Information System Laboratory, Stanford University.
Haardt, Brunner and Nossek Joint Estimation of 2-D Arrival Angles, Propagation Delays, and Doppler Frequencies in Wireless Communications, Proc. IEEE Digital Signal Processing Workshop, vol. 1, pp. 1-4, Bryce Canyon National Park, Utah, Aug. 1998.
M.Wax, “Position location from sensors with position uncertainty”, IEEE Trans. Aero., Elect. Syst. AES-19, No. 2 (Sep. 1983), 658-662.
D.J. Torrieri. “Statistical Theory of Passive Location Systems”, IEEE Trans. Aerosp. Electron. Syst. AES-20, No. 2 (Mar. 1984), 183-198.
Y.T. Chan and K.C. Ho, “A simple and efficient estimator for hyperbolic location”, IEEE Trans. Signal Proc. 42, No. 8 (Aug. 1994), 1905-1915.
W.H. Foy. “Position location solutions by Taylor series estimation”, IEEE trans. Aerosp. Electron. System AES-12, No. 2 (Mar. 1976), 187-194.
R.G. Stansfield, “Statistical theory of DF fixing”, Journ. IEE 94, part IIIa (Oct. 1947), 762-770.
M.P. Wylie and J. Houtzman, “The non-line of sight problem in mobile location estimation”. Proc. IEEE 5thIinternational Conf. on Universal Personal Communications, vol. 2 (Oct. 1996), 827-831.
L.Cong and W.Xuang, “Non-Line-of-Sight Error Mitigation in TDOA mobile location” Proc. IEEE Global Telecommunications conference vol. 1 (2001), 680-684.
P.C. Chen, “A non-line-of-sight error mitigation algorithm in location estimating” Proc. IEEE Conf. on wireless Communications Networking, vol. 1 (1999), 316-320.
N.J. Thomas, D.G.M. Cruickshank and D.I.Laurenson, “Performance of a TDOA-AOA hybrid mobile location system” 3G Mobile Communication Technologies Conf. Proc. 1 (Mar. 2001), 216-220.
Caffery, J., Jr., et al., “Subscriber Location in CDMA Cellular Networks,” IEEE Transactions on Vehicular Technology, vol. 47, No. 2, May 1998.
Caffery, J., Jr., “A New Approach to the Geometry of TOA Location,” IEEE, VTC 2000, pp. 1943-1949.
Alles Martin
Carlson Peter
Kennedy, Jr. Joseph P.
Andrew Corporation
Gesesse Tilahun
Morris LLP Duane
LandOfFree
Method for sparse network deployment accuracy enhancements does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for sparse network deployment accuracy enhancements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for sparse network deployment accuracy enhancements will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4060253