Method and apparatus for transmitting/receiving wireless signal in wireless communication system

A device for wireless communication, the device comprising:

• a memory configured to store instructions;
• and
• a processor configured to perform operations by executing the instructions, the operations comprising:
• receiving a physical downlink control channel (PDCCH) carrying downlink control information (DCI);
• performing data reception based on the DCI;
• and
• determining hybrid automatic repeat request (HARQ)-acknowledgement (ACK) based on a result of the data reception,
• wherein the HARQ-ACK is reported through a physical uplink control channel (PUCCH) based on either:
• a first reporting type in which the HARQ-ACK reporting is performed for negative-ACK (NACK) only, or
• a second reporting type in which the HARQ-ACK reporting is performed for ACK/NACK both, and
• wherein the processor selects one of the first reporting type and the second reporting type based on the DCI, and selects a resource of the PUCCH based on the DCI.