Patent ID: 7130295

Claim:
A method for retransmitting data in a mobile communication system including a MAC-h (Medium Access Control-high speed) layer for performing data retransmission between a UE (User Equipment) and a Node B, and an RLC (Radio Link Control) layer for performing data retransmission between the UE and an RNC (Radio Network Controller), comprising the steps of: transmitting, from the MAC-h layer to the RLC layer, received RLC PDUs (Protocol Data Units) and a parameter indicating whether a retransmission process on at least one non-received RLC PDU is being performed; and receiving by the RLC layer the RLC PDUs and the parameter, and, if there is at least one non-received RLC PDU associated with the received RLC PDUs, awaiting or performing retransmission on the non-received RLC PDU according to whether the parameter indicates that the retransmission process is being performed.