A method for driving a retransmission timer in a mobile telecommunications
system using a radio link protocol. A mobile telecommunications system
receives a frame transmitted from a transmitter and, if the received
frame is determined to be erroneous, requests the transmitter to
retransmit the frame and drives a retransmission timer. In this case,
there is a probability that the retransmission timer will be held. For
this reason, the method for driving the retransmission timer minimizes
that probability. Accordingly, the retransmission timer expires earlier
by a period of time for which it is not held, thereby allowing subsequent
operations in the mobile telecommunications system to be performed
quickly and at an improved data rate.