Relay network and entity for continuous transmission based on superposition coding

A relay network and entity capable of successive continuous transmission by using overlapped coding in order to reduce a transmission delay according to the relay use are provided to reduce transmission delay according to the relay use by transmitting data without time division between a base station-relay link and relay-terminal link. A base station(410) reuses a resource allocated to a direct transmission link in the transmission of the base station through an overlapped coding mode. A relay(420) is allocated the resources allocated in the base station and the other separate resources in the transmission of the relay-terminal link. A channel characteristics is maintained in the transmission of the relay-terminal link. The base station-relay link transmits the relay without allocating the resource.