A method and apparatus for a wireless communication system is provided. The apparatus includes a transceiver and at least one processor coupled with the transceiver and configured to receive data from a first node, transmit the data to a second node, receive, from the second node, radio link control (RLC) feedback information corresponding to the transmitted data and transmit, to the first node, RLC feedback information corresponding to the received data based on the received RLC feedback information and the received data.