A method of transmitting a physical uplink control channel, PUCCH, to a base station, BS, by a user equipment, UE, for a wireless communication system, the method comprising: configuring the PUCCH to repeat N times a resource group in which N numbers of data are frequency division multiplexed, FDMed, in a direction of a frequency domain with respect to each of at least one symbol, where N is an integer greater than 2; and transmitting the configured PUCCH in the at least one symbol by applying phase rotations with different angles to N-1 of the N numbers of data, respectively, wherein the N numbers of data includes 1 number of demodulation reference signal, DM-RS, and N-1 number of uplink control information, UCI, the N-1 is an integer greater than 1, wherein the DM-RS is allocated to 1 interlace among N interlaces, and the UCI is allocated to N-1 interlaces among the N interlaces, and wherein the DM-RS is transmitted in the 1 interlace being not applied the phase rotation, and the N-1 number of the UCI is transmitted in each of the N-1 interlaces being applied the different angles of the phase rotations, wherein the N interlaces are configured by: dividing a resource element group, REG, into N sub-resource element group, S-REG, wherein each S-REG is an interlace resource corresponding to a resource element, RE, set where an interval between adjacent REs within the S-REG is N-1 REs, and N interlace resources are configured by partitioning the REG based on interleaved frequency division multiplexing; and repeating the REG by N times in a frequency domain, wherein a discrete fourier transform, DFT, spreading is applied to the UCI and the REG including 12 REs is a basic unit for allocating the PUCCH, wherein a number of REs in the REG for the UCI is determined to a multiple of 2 in case the PUCCH is additionally FDMed with a sounding reference signal, SRS, wherein a number of REs in the REG for the DM-RS is 2 based on the PUCCH being additionally FDMed with the SRS and based on a ratio of 1/N being smaller than 1/2, and wherein 2 REs in the REG are reserved for the SRS. configuring the PUCCH to repeat N times a resource group in which N numbers of data are frequency division multiplexed, FDMed, in a direction of a frequency domain with respect to each of at least one symbol, where N is an integer greater than 2; and transmitting the configured PUCCH in the at least one symbol by applying phase rotations with different angles to N-1 of the N numbers of data, respectively, wherein the N numbers of data includes 1 number of demodulation reference signal, DM-RS, and N-1 number of uplink control information, UCI, the N-1 is an integer greater than 1, wherein the DM-RS is allocated to 1 interlace among N interlaces, and the UCI is allocated to N-1 interlaces among the N interlaces, and wherein the DM-RS is transmitted in the 1 interlace being not applied the phase rotation, and the N-1 number of the UCI is transmitted in each of the N-1 interlaces being applied the different angles of the phase rotations, wherein the N interlaces are configured by: dividing a resource element group, REG, into N sub-resource element group, S-REG, wherein each S-REG is an interlace resource corresponding to a resource element, RE, set where an interval between adjacent REs within the S-REG is N-1 REs, and N interlace resources are configured by partitioning the REG based on interleaved frequency division multiplexing; and repeating the REG by N times in a frequency domain, wherein a discrete fourier transform, DFT, spreading is applied to the UCI and the REG including 12 REs is a basic unit for allocating the PUCCH, wherein a number of REs in the REG for the UCI is determined to a multiple of 2 in case the PUCCH is additionally FDMed with a sounding reference signal, SRS, wherein a number of REs in the REG for the DM-RS is 2 based on the PUCCH being additionally FDMed with the SRS and based on a ratio of 1/N being smaller than 1/2, and wherein 2 REs in the REG are reserved for the SRS. dividing a resource element group, REG, into N sub-resource element group, S-REG, wherein each S-REG is an interlace resource corresponding to a resource element, RE, set where an interval between adjacent REs within the S-REG is N-1 REs, and N interlace resources are configured by partitioning the REG based on interleaved frequency division multiplexing; and repeating the REG by N times in a frequency domain, wherein a discrete fourier transform, DFT, spreading is applied to the UCI and the REG including 12 REs is a basic unit for allocating the PUCCH, wherein a number of REs in the REG for the UCI is determined to a multiple of 2 in case the PUCCH is additionally FDMed with a sounding reference signal, SRS, wherein a number of REs in the REG for the DM-RS is 2 based on the PUCCH being additionally FDMed with the SRS and based on a ratio of 1/N being smaller than 1/2, and wherein 2 REs in the REG are reserved for the SRS.