Method for relaying data in wireless communication system based on tdd

PURPOSE: By being based on in TDD using the radio frame consisting of a plurality of down link subframes and plurality of uplink subframes and relaying data at the wireless telecommunications system data regenerating method can prevent the uplink ACK collision. CONSTITUTION: The down link subframe connected with the uplink subframe is instituted as the MBSFN(Multicast/Broadcast Single Frequency Network) subframe(400). Downlink data is received from the MBSFN subframe. Upward link data relays from the uplink subframe through the base station(BS). The radio frame comprises a plurality of down link subframes and one or more uplink subframe(500). The radio frame is composed of the subframe of 10.