Method and apparatus for relaying signal in wireless communication system

The present invention is a pilot symbol transmitted by the relay device to the base station, respectively, corresponding to the process of broadcasting a pilot symbol including a repeater identifier to be used in the signal relay method in a wireless communication system, a base station in the next frame, and the repeater identifiers s: (signal to Noise ratio SNR) of the second 1SNR is measured, wherein the 1SNR the first threshold value or more if the process and, the at least one of the terminal repeater to transmit a pilot symbol to at least one terminal of the signal-to-noise ratio the process of the first terminal receiving the pilot symbols, each transmission is measured claim 2 SNR of SNR of the pilot symbol transmitted by the base station and, in the first terminal the SNR of a pilot symbol transmitted at each of the repeater of claim the measuring of 3SNR and, the first terminal at the base station through the repeater by using the first and the second 3 2SNR SNR It comprises the step of determining whether or not to receive the data packet Shinhan. Relay transmission