Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2008-07-08
2008-07-08
Addy, Thjuan K (Department: 2614)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S404200, C455S414200, C455S440000
Reexamination Certificate
active
07398092
ABSTRACT:
A system and method for tracing a location of a mobile terminal involves having the mobile terminal transmit a predetermined signal including discrimination information with a predetermined interval. A plurality of base stations calculate distances from the mobile terminal based on a reception time for the predetermined signal transmitted from the terminal and then transmit the distance values to a cell controller. The cell controller traces a location of the mobile terminal using the distance values transmitted from the base stations. Accordingly, the system and method does not need a GPS receiver to calculate the terminal location, thereby reducing costs and location error range for the mobile telecommunication system.
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CN Office Action and English language translation (Dec. 10, 2004).
Addy Thjuan K
KED & Associates LLP
LG Electronics Inc.
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