Method and apparatus for supporting harq

A base station for supporting retransmission in a wireless communication system, the base station comprising:

• a radio frequency unit;
• and
• a processor coupled to the radio frequency unit and configured for:
• receiving, from a user equipment, initial uplink data on a physical uplink shared channel (PUSCH), wherein the initial uplink data is transmitted by using a transmission parameter indicating an allocated resource;
• and
• receiving, from the user equipment, subsequent uplink data on the PUSCH, wherein retransmission data of the initial uplink data and a channel quality indicator (CQI) are multiplexed in the subsequent uplink data, and wherein a radio resource used for the CQI is determined based on the transmission parameter indicating the allocated resource for the initial uplink data.