A user equipment for a wireless communication system, the user equipment comprising: a communication module; and a processor configured to control the communication module, wherein the processor is configured to: receive two or more downlink control information, DCIs, from the base station, wherein each of the two or more DCIs is received through each of two or more physical downlink control channels, PDCCHs, and is used for scheduling physical downlink shared channel, PDSCH, reception on a corresponding cell among a plurality of cells, wherein each of the two or more DCIs respectively includes a counter downlink assignment index, DAI, and a total DAI, wherein at least one cell of the plurality of cells is configured with Code Block Group, CBG, based transmission, and wherein each of the two or more DCIs is used to schedule a transport block, TB-based PDSCH reception or a CBG-based PDSCH reception for the corresponding cell of the plurality of cells, and transmit hybrid automatic repeat request, HARQ-acknowledgement, ACK, information comprising a first HARQ-ACK bit sequence and a second HARQ-ACK bit sequence in response to the TB-based PDSCH reception and the CBG-based PDSCH reception scheduled by the two or more DCls, wherein the counter DAI and the total DAI are separately applied for each of the first HARQ-ACK bit sequence and the second HARQ-ACK bit sequence according to the TB-based PDSCH reception and the CBG-based PDSCH reception. a communication module; and a processor configured to control the communication module, wherein the processor is configured to: receive two or more downlink control information, DCIs, from the base station, wherein each of the two or more DCIs is received through each of two or more physical downlink control channels, PDCCHs, and is used for scheduling physical downlink shared channel, PDSCH, reception on a corresponding cell among a plurality of cells, wherein each of the two or more DCIs respectively includes a counter downlink assignment index, DAI, and a total DAI, wherein at least one cell of the plurality of cells is configured with Code Block Group, CBG, based transmission, and wherein each of the two or more DCIs is used to schedule a transport block, TB-based PDSCH reception or a CBG-based PDSCH reception for the corresponding cell of the plurality of cells, and transmit hybrid automatic repeat request, HARQ-acknowledgement, ACK, information comprising a first HARQ-ACK bit sequence and a second HARQ-ACK bit sequence in response to the TB-based PDSCH reception and the CBG-based PDSCH reception scheduled by the two or more DCls, wherein the counter DAI and the total DAI are separately applied for each of the first HARQ-ACK bit sequence and the second HARQ-ACK bit sequence according to the TB-based PDSCH reception and the CBG-based PDSCH reception. receive two or more downlink control information, DCIs, from the base station, wherein each of the two or more DCIs is received through each of two or more physical downlink control channels, PDCCHs, and is used for scheduling physical downlink shared channel, PDSCH, reception on a corresponding cell among a plurality of cells, wherein each of the two or more DCIs respectively includes a counter downlink assignment index, DAI, and a total DAI, wherein at least one cell of the plurality of cells is configured with Code Block Group, CBG, based transmission, and wherein each of the two or more DCIs is used to schedule a transport block, TB-based PDSCH reception or a CBG-based PDSCH reception for the corresponding cell of the plurality of cells, and transmit hybrid automatic repeat request, HARQ-acknowledgement, ACK, information comprising a first HARQ-ACK bit sequence and a second HARQ-ACK bit sequence in response to the TB-based PDSCH reception and the CBG-based PDSCH reception scheduled by the two or more DCls, wherein the counter DAI and the total DAI are separately applied for each of the first HARQ-ACK bit sequence and the second HARQ-ACK bit sequence according to the TB-based PDSCH reception and the CBG-based PDSCH reception.