This application discloses a node and a communication method, to resolve a problem of relatively high implementation complexity and costs of an RN. The communication method includes: sending, by a first node at a first protocol layer, a first message to a peer first protocol layer on an interface between the first node and a second node; and receiving, by the second node at the first protocol layer, the first message from the peer first protocol layer on the interface between the second node and the first node. This application relates to the field of communications technologies.