Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2003-05-28
2010-06-22
Rampuria, Sharad (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S456100, C455S423000, C455S067110, C455S456500, C342S357490
Reexamination Certificate
active
07742776
ABSTRACT:
To locate a mobile terminal (MS1, MS2, . . . ) within a mobile communication network comprising at least a radio base station (BTS1, BTS2, . . . , BTSn), a set of physical dimensions are measured, which identify, according to respective functions, the location coordinates (x, y, z) of the mobile terminal. The method comprises the steps of: generating, starting from said set of physical dimensions and respective functions, a global locating error function (φ) which has a minimum for values of said locating co-ordinates (x, y, z) corresponding with the position occupied by said mobile terminal, seeking the minimum of said error function (φ) by varying at least one of said locating co-ordinates (x, y, z), and locating said mobile terminal in correspondence with the value of said at least one locating co-ordinate corresponding to said minimum.
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Kim, H-Y, et al “Mobile positioning using improved least squares algorithm in cellular systems,” IEICE Transactions on Communications, Institute of Electronics Information and Comm. Eng., Tokyo, Japan, vol. E84-B, No. 1, Jan. 2001.
Annunziato Armando
Rosenga Giorgio
Salio Stefano
Banner & Witcoff , Ltd.
Rampuria Sharad
Telecom Italia S.p.A.
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