The disclosure relates to a wireless communication system. Particularly, the disclosure relates to a method including determining a first uplink control information (UCI) of a highest priority among a plurality of UCIs, the plurality of UCIs corresponding to a plurality of non-overlapped physical uplink control channel (PUCCH) resources within the same time period, determining a second UCI of a highest priority in a UCI set, based on a format of a PUCCH resource corresponding to the first UCI, and transmitting the first UCI and the second UCI, respectively in PUCCH resources corresponding to the first UCI and the second UCI, and an apparatus for the same.