Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-12-26
2006-12-26
Trost, William (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S456500, C455S456600, C342S450000
Reexamination Certificate
active
07155237
ABSTRACT:
The present invention provides for a method of, and related system for, determining the position of a mobile radio terminal (10,M) arranged for communication with a plurality of base stations (BS1, BS2) and including the steps of employing a Time Of Arrival calculation in combination with a Time Difference Of Arrival calculation, characterized by performing the combined Time of Arrival and Time Difference Of Arrival calculations on signals transmitted in the downlink channel from the base stations (BS1, BS2) to the mobile radio terminal (10,M).
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Belk Michael E.
Ewart James D.
Koninklijke Philips Electronics , N.V.
Trost William
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