Methods and apparatuses for acknowledgment information for multiple sets of cells. A method performed by a user equipment for providing hybrid automatic repeat request acknowledgment (HARQ-ACK) information is provided includes receiving first information for a first set of serving cells including multiple serving cells, first downlink control information (DCI) formats, and first PDSCHs on respective first serving cells. The method further includes determining first HARQ-ACK information corresponding to the first PDSCHs and a first HARQ-ACK codebook associated with the first DCI formats that includes the first HARQ-ACK information. The first HARQ-ACK information includes a negative acknowledgment (NACK) for the first PDSCH. The NACK is appended to HARQ-ACK information corresponding to the first PDSCHs except for the first PDSCH. The method further includes transmitting an uplink channel that provides HARQ-ACK codebooks including the first HARQ-ACK codebook.