Patent ID: 8923192

Claim:
A method for service data transmission, comprising: receiving, by a receiver of a mobile terminal, a control signal sent from a base station, wherein the control signal is used for indicating more than one subcarriers allocated to the mobile terminal and the more than one subcarriers are used for transmitting service data; judging whether the difference between the highest frequency FRE high and the lowest frequency FRE Low in the more than one subcarriers exceeds a threshold value TH b ; and if the difference does not exceed the threshold value TH B , then receiving, by the receiver, the service data using a narrowband mode, otherwise receiving, by the receiver, the service data using a broadband mode; wherein the step of receiving, by the receiver, the service data using a narrowband mode comprises: configuring working parameters of a radio frequency module, a low pass filter module, an analog digital converter module and a Fourier transform module of the receiver respectively, with the working parameters corresponding to the narrowband mode; and receiving the service data using the radio frequency module, low pass filter module, analog digital converter module and Fourier transform module the working parameters of which have been configured.