Method for accurate time setting of communication device...

Details Method for accurate time setting of communication device... Method for accurate time setting of communication device...

2011-08-16

2011-08-16

Mehrpour, Melody (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S550100

Reexamination Certificate

active

08000696

ABSTRACT:
A method for accurate time setting of a communication device (2, 3) in which said communication device (2, 3) sends (A0) a request for time synchronization to a central communications unit (1) through communication data packets via a cellular telephone network (5); said central communications unit (1) sends current time in a response to said communication device (2, 3) through communication data packets via the cellular telephone network (5); said communication device (2, 3) measures (A2) an elapsed time (T) from sending said request to receiving the response and compares said measured elapsed time (T) with a predetermined first configuration parameter (“Trip”); and, When said measured elapsed time (T) is less than said first configuration parameter (“Trip”), said communication device (2, 3) uses (A3) received current time for updating its own time reference.

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