GAIN CONTROL METHOD AND APPARATUS

The present application relates to a gain control method and an apparatus, comprising an automatic gain controller. An input power of a PSS in an input signal is detected in real time, a rated power of a downlink PSS that acts as a gain control threshold of the automatic gain controller is acquired, and the automatic gain controller is controlled to adjust a value of gain attenuation according to magnitudes of the input power of the PSS and the rated power of the downlink PSS, which is used to adjust an uplink gain and a downlink gain. In the present disclosure, the rated power of the downlink PSS is used as the gain control threshold of the automatic gain controller, a magnitude relationship between the input power of the PSS and the rated power of the downlink PSS is detected to control levels of the input signal of the uplink and downlink and the uplink gain and the downlink gain are further controlled so as to prevent frequent switching of signal levels, and at the same time, linkage control of the downlink gain and uplink gain is performed to prevent interference with a base station due to excessively high uplink noise floor.