Method and device for acquiring resource for uplink control channel in wireless communication system

A user equipment (UE) for acquiring a physical uplink control channel (PUCCH) resource index in a wireless communication system, the UE comprising:

• a radio frequency (RF) for unit transmitting or receiving a radio signal;
• and
• a processor connected to the RF unit, and configured to:
• acquire a PUCCH resource index indicating a first dynamic PUCCH region corresponding to an enhanced physical downlink control channel (e-PDCCH);
• and
• transmit an acknowledgement/non-acknowledgement (ACK/NACK) signal to a base station based on the acquired PUCCH resource index,
• wherein the PUCCH resource index is acquired based on the smallest control channel element (CCE) index to which the e-PDCCH is allocated, and
• wherein the first dynamic PUCCH region corresponding to the e-PDCCH is not overlapped with a second dynamic PUCCH region corresponding to a PDCCH.