A communications method is applied to a communications system including a backhaul node and a first wireless access device. The first wireless access device receives a first backhaul signal by using a first radio resource, and receives a first service signal by using a second radio resource. Herein, the first backhaul signal includes backhaul data sent by the backhaul node to the first wireless access device, the first service signal includes service data sent by a terminal to the first wireless access device, and the first radio resource is partially or completely the same as the second radio resource. Therefore, the first wireless access device may transmit the backhaul data and the service data on a radio resource.