Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2008-04-15
2008-04-15
Rampuria, Sharad (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S456100, C455S526000, C455S423000, C455S067110, C342S387000, C342S465000
Reexamination Certificate
active
09830447
ABSTRACT:
The invention described relates to a radio positioning system primarily for a mobile telephone network, in which a list of offsets in time, phase, frequency, or derivatives thereof, or their equivalents expressed as offsets in distance or derivatives thereof, of a plurality of transmission source signals, received at a given location, relative to a common reference are generated. Data is acquired from one or more receivers, the positions of which may be known or determined. Such data are offsets in time, phase, frequency, or derivatives thereof, respectively of signals received from the transmission sources relative to a reference source in each receiver or to each other. The acquired data is combined for calculating the list of offsets relative to the common reference.
REFERENCES:
patent: 5045861 (1991-09-01), Duffett-Smith
patent: 5293645 (1994-03-01), Sood
patent: 5600706 (1997-02-01), Dunn et al.
patent: 5689270 (1997-11-01), Kelley et al.
patent: 5859612 (1999-01-01), Gilhousen
patent: 5883598 (1999-03-01), Parl et al.
patent: 6035202 (2000-03-01), Camp, Jr.
patent: 6094168 (2000-07-01), Duffett-Smith et al.
patent: 6108315 (2000-08-01), Freeburg et al.
patent: 6166691 (2000-12-01), Lindqvist
patent: 6275705 (2001-08-01), Drane et al.
patent: 6310576 (2001-10-01), Johnson
patent: 6347228 (2002-02-01), Ludden et al.
patent: 6445928 (2002-09-01), Ruutu et al.
patent: 2003/0146871 (2003-08-01), Karr et al.
patent: WO 9711384 (1997-03-01), None
Brice James Paul
Duffett-Smith Peter James
Hansen Paul
Cambridge Positioning Systems Limited
Rampuria Sharad
Roylance Abrams Berdo & Goodman L.L.P.
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