Patent ID: 8559311

Claim:
An operation method of a relay node, the operation method comprising: receiving a first transmission message from a first source node in a first time slot, the first transmission message comprising a superposition-coding of a 1-1 partial source message and a 1-2 partial source message that are included in a first source message corresponding to the first source node; receiving a second transmission message from a second source node in a second time slot, the second transmission message comprising a superposition-coding of a 2-1 partial source message and a 2-2 partial source message that are included in a second source message corresponding to the second source node; and transmitting a relay message to a first destination node corresponding to the first source node and to a second destination node corresponding to the second source node, in a third time slot, the relay message comprising a superposition-encoding of the 1-1, 1-2, 2-1, and 2-2 partial source messages, wherein the first source node, the second source node, the first destination node and the second destination node are different from each other.