Method for relaying in a cellular network and cellular mobile communication system supporting the same

A method for receiving transmitted data via a relay station by a receiving station in a cellular network, the method comprising:

• receiving a packet from the relay station;
• determining whether the packet was network-coded, depending on header information of the received packet;
• and
• if the packet was network-coded, performing network decoding on the received packet and its transmission first data through an operation of a predefined operator thereby outputting second data;
• wherein identification information indicating the network coding, identification information of the receiving station, sizes of the first and second data, and sequence numbers of the first and second data are recorded in a header of the packet.

A cellular mobile communication system comprising:

• a relay station for performing network coding on first data received from a Base Station (BS) and second data received from a Mobile Station (MS) through an operation of a predefined operator, generating a packet composed of a header and a payload, and transmitting the packet to the BS and the MS through one wireless channel, wherein identification information indicating the network coding, identification information of the MS, sizes of the first and second data, and sequence numbers of the first and second data are recorded in the header, and the payload includes the network-coded data;
• the BS for determining whether the packet was network-coded, based on the identification information recorded in the header of the packet received from the relay station, and if the packet was network-coded, performing network decoding on the data corresponding to the payload of the received packet and transmission first data through an operation of a predefined operator, thereby outputting second data;
• and
• the MS for determining whether the packet was network-coded, based on the identification information recorded in the header of the packet received from the relay station, and if the packet was network-coded, performing network decoding on the data corresponding to the payload of the received data and transmission second data through an operation of a predefined operator, thereby outputting first data.