A user equipment (UE) is described that includes a processor. The UE is configured with a secondary cell group (SCG). The UE is also configured with a licensed-assisted access (LAA) serving cell as a primary secondary cell (pSCell) of the SCG. The UE receives a physical downlink shared channel (PDSCH) on at least one LAA serving cell in the SCG. The UE determines a channel to carry uplink control information (UCI), the channel being on any one of the serving cell(s) in the SCG. The UE also determines transmission timing of the channel based on reception timing of the PDSCH. The UE further determines one or more PDSCHs of which HARQ-ACK bits are included in the UCI, the one or more PDSCHs including the PDSCH. The UE additionally determines content of the HARQ-ACK bits. The UE also performs a channel access procedure for the transmission of the channel.