Abstract: A method of transmitting, by a user equipment (UE), uplink control information (UCI) in a wireless communication system includes receiving, from a base station (BS), physical uplink control channel (PUCCH) resource information for the UCI. Further, the UCI is hybrid automatic repeat request (HARQ) feedback information of multiple downlink cells. The method also includes transmitting, to the BS, the UCI on a PUCCH resource. In addition, the PUCCH resource is mapped to multiple resource block (RB) pairs, the multiple RB pairs include RBs included in a first slot and RBs included in a second slot, the RBs included in the first slot are consecutive RBs to each other, and the RBs included in the second slot are consecutive RBs to each other.