Apparatus and method for a retransmission of a data in a mobile communication system

The invention transmitter side medium access control (MAC: Medium Access Control) layer and a physical (PHY: Physical) includes a layer, the receiver is in a mobile communication system including the MAC layer and the PHY layer, the side of the PHY transmitter Status after layer receives transmission data to be transmitted toward the receiver from the MAC layer of the transmitter side, and transmitting the data to the PHY layer of the receiver side, and transmitting the data received normally in the data from the PHY layer of the receiver side Upon receiving the information indicating the then, if the information indicating whether normal reception of the data represent a normal reception to notify the normal reception of the data to the MAC layer of the transmitter side, the information is sloth whether normal reception of the data when referring to the abnormal received and retransmits the data to the PHY layer of the receiver side. FARQ way, HARQ scheme, ARQ mode, MAC layer, PHY layer