POWER CONTROL METHOD AND DEVICE FOR DEVICE TO DEVICE (D2D)TRANSMISSION

摘要

Disclosed are a power control method and device for D2D transmission. The method comprises: a base station device determining an upper limit value of interference power corresponding to a terminal device, wherein the upper limit value of the interference power is the maximum interference value which is allowed by the base station device and generated by D2D transmission to cellular transmission; and the base station device sending the upper limit value of the interference power to the terminal device, so that the terminal device determines the upper limit value of D2D transmission power by using the upper limit value of the interference power. In the embodiments of the present invention, the terminal device determines the upper limit value of the D2D transmission power by means of the upper limit value of the interference power, and determines the D2D transmission power by using the upper limit value of the D2D transmission power, so that the D2D transmission power of the terminal device can be controlled, that is, transmitting power of the D2D transmission is controlled so as to make the interference generated by same to the cellular transmission to a controlled range, and then the interference of a D2D signal to a cellular signal is controlled.