The embodiment of the invention discloses a coding
rate control method. The method comprises the steps that UE receives uplink rate
estimation information which is sent by a
base station and corresponds to the UE; the UE determines a target coding rate according to the uplink rate
estimation information obtained by the
base station for the UE; and when the rate deviation of the target coding rate and a current coding rate exceeds a preset range, the UE adjusts a to-be-sent
signal according to the target coding rate, so the coding rate of the to-be-sent
signal approaches to the target coding rate, wherein the current coding rate is the coding rate of sending the
signal to the
base station currently by the UE. The embodiment of the invention also provides the UE, the base
station and a coding
rate control system. According to the method, the
system, the UE and the base
station, the UE actively adjusts the coding rate according to the uplink rate
estimation information fed back by the base
station, so the coding rate of the signal is adjusted in real time, the coding rate can adapt to the channel quality change rapidly, the
service quality is improved, and the
delay is reduced.