METHOD FOR RETRANSMITTING DATA UNIT USING DELIVERY STATUS INFORMATION FROM A PEER ENTITY

摘要

PURPOSE: A method for retransmitting data unit using delivery status information from a peer entity is provided to prevent the unnecessary retransmission of the already received RLC data PDU and to improve The usage efficiency of the radio resource. CONSTITUTION: Data unit is transmitted to the peer receiving automatic repeat request entity. The delivery failure indication about data unit is received from the transmitting hybrid automatic repeat request entity. The delivery status indication about data unit previously received from the reception ARQ entity is determined. The data unit is selectively retransmitted.