Apparatus and method for generating MAC protocol data unit in wireless communication system

摘要

An apparatus and a method for transmitting an Automatic Repeat reQuest (ARQ) block in a wireless communication system are provided. The method for transmitting the ARQ block includes when transmitting the ARQ block to a receiving stage in a Not Sent state, transiting to an Outstanding state to wait to receive ACK/NACK for the ARQ block; when receiving the NACK for the ARQ block from the receiving stage in the Outstanding state, transiting to a Waiting for Retransmission state; when determining to retransmit the ARQ block for the NACK by splitting the ARQ block to at least two ARQ sub-blocks in the Waiting for Retransmission state, transiting to a Rearrangement state; retransmitting the ARQ block for the NACK by splitting the ARQ block to at least two ARQ sub-blocks in the Rearrangement state; and when receiving ACK for every ARQ sub-block having the same ARQ Sequence Number (SN) in the Rearrangement state, transiting to a Done state and finishing transmission of the ARQ block having the ARQ SN.