Patent ID: 7920825

Claim:
A method for transmitting data via a Relay Station (RS) in a wireless relay system, comprising the steps of: encoding a first data message and a second data message directed to a first Mobile Station (MS) and a second MS scheduled at a current scheduling instant by superposition coding by a Base Station (BS), the first data message carrying a first information bit stream for the first MS, the second data message carrying a second information bit stream for the second MS, the first MS having a relatively good direct link to the BS, and the second MS having a relatively bad direct link to the BS; transmitting the superposition-coded data to the first MS and the RS connected between the BS and the first and second MSs by the BS; receiving the superposition-coded data from the BS; extracting the second information bit stream for the second MS by decoding the superposition-coded data; and transmitting a third data message carrying the second information bit stream to the first and second MSs by the RS.