Method for transmitting uplink control channel and user equipment for performing same

A user equipment (UE) configured to perform physical uplink control channel (PUCCH) transmission in a wireless communication system, the UE comprising:

• a radio frequency (RF) module;
• at least one processor;
• and
• at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations comprising:
• receiving higher-layer signaling related to (i) a number of at least one resource block (RB) for the PUCCH transmission, and (ii) a number of at least one Orthogonal Frequency Division Multiplexed (OFDM) symbol for the PUCCH transmission, wherein each of the at least one RB comprises a plurality of resource elements (REs);
• generating a demodulation reference signal (DMRS) and Uplink Control Information (UCI) for the PUCCH transmission;
• mapping the UCI and the DMRS to REs in the at least one RB over a duration of the at least one OFDM symbol;
• and
• transmitting, through the RF module, the UCI and the DMRS mapped to the REs in the at least one RB over the duration of the at least one OFDM symbol,
• wherein the plurality of REs in each RB comprises (i) first REs for transmission of the DMRS, and (ii) second REs for transmission of the UCI, and
• wherein, within each RB, the first REs are spaced apart by two second REs between consecutive first REs.