Method and apparatus for transmitting receipt confirmation reply in wireless communication system

A User Equipment (UE) for transmitting a plurality of uplink (UL) Hybrid Automatic Repeat Request—Acknowledgements (HARQ-ACKs) in a wireless communication system, the UE comprising:

• a reception module;
• and
• a processor,
• wherein the processor is configured to:
• receive a first uplink-downlink (UL-DL) configuration via a system information block,
• receive a downlink (DL) signal in a plurality of subframes, and
• transmit an HARQ-ACKs in a subframe n according to the first UL-DL configuration or a second UL-DL configuration,
• wherein n is an integer greater than zero, and
• wherein Physical Uplink Control Channel (PUCCH) resources for the HARQ-ACKs in the subframe n are allocated with a higher priority to DL subframes among the plurality of DL subframes for which HARQ-ACKs are to be transmitted in the subframe n according to the first UL-DL configuration than DL subframes uncommon to the first UL-DL configuration among the plurality of DL subframes for which HARQ-ACKs are to be transmitted in the subframe n according to the second UL-DL configuration, when the UE determines a PUCCH resource for the HARQ-ACKs according to the second UL-DL configuration, and
• wherein PUCCH resources for the HARQ-ACKs in the subframe n which are not allowed to be used as HARQ-ACK transmission UL subframes among the DL subframes uncommon to the first UL-DL configuration are allocated with a higher priority than PUCCH resources for the HARQ-ACKs in DL subframes which are allowed to be used as HARQ-ACK transmission UL subframes among the DL subframes uncommon to the first UL-DL configuration.

A method for transmitting an uplink (UL) Hybrid Automatic Repeat Request—ACKnowledgement (HARQ-ACK) in a wireless communication system, performed by a User Equipment (UE), the method comprising:

• receiving a first uplink-downlink (UL-DL) configuration via a system information block,
• receiving a downlink (DL) signal in subframe n-k;
• and
• transmitting HARQ-ACKs for DL signals including the DL signal in subframe n,
• wherein Physical Uplink Control Channel (PUCCH) resources for the HARQ-ACKs in the subframe n are allocated with following priority order:
• i) one or more common DL subframes between the first UL-DL configuration and a second UL-DL configuration,
• ii) one or more DL subframes which are not allowed to be used as a UL subframe, and
• iii) one or more DL subframes which are allowed to be used for UL a subframe.