Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2007-04-10
2007-04-10
Zewdu, Meless N. (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S456100, C455S456600, C455S422100, C455S404200
Reexamination Certificate
active
09815337
ABSTRACT:
A method and system for locating mobile stations within a mobile communication network including at least two mobile stations and at least three base stations. Signal measurements are performed at the mobile stations and/or the base stations. Two or more mobile stations are located simultaneously by minimizing a cost-function, which is achieved by means of a sufficient number of equations, wherein the equations comprises the location of the mobile stations as a function of the location of one of the base stations in the network and the performed signal measurements.
REFERENCES:
patent: 5327144 (1994-07-01), Stilp et al.
patent: 5515378 (1996-05-01), Roy, III et al.
patent: 5835857 (1998-11-01), Otten
patent: 5890068 (1999-03-01), Fattouche et al.
patent: 5973643 (1999-10-01), Hawkes et al.
Communication pursuant to Article 96(2) EPC issued on Mar. 24, 2006 by the European Patent Office in Application No. 01 850 054.6. (References listed in this communication were previously cited in an Information Disclosure Statement filed on Jun. 11, 2001.)
Cedervall Mats
Jobėr Johan
Kangas Ari
Nixon & Vanderhye P.C.
Telefonaktiebolaget LM Ericsson (publ)
Zewdu Meless N.
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