A terminal device comprising: a reception unit configured to: receive a radio resource control, RRC, message including information used for configuring one of a first behavior and a second behavior for transmission of Hybrid Automatic Repeat Request Acknowledgment, HARQ-ACK; and a transmission unit configured to: transmit, with respect to physical downlink shared channel, PDSCH, transmission on a secondary cell, the HARQ-ACK using a third physical uplink control channel, PUCCH, resource and a PUCCH format 3, and transmit, with respect to the PDSCH transmission on the secondary cell, the HARQ-ACK using a fourth PUCCH resource and a PUCCH format 4; wherein: in a case that the information included in the RRC message indicates to configure the first behavior, the third PUCCH resource and the PUCCH format 3 are used for the transmission of the HARQ-ACK or the fourth PUCCH resource and the PUCCH format 4 are used for the transmission of the HARQ-ACK, in a case that the information included in the RRC message indicates to configure the second behavior, the fourth PUCCH resource and the PUCCH format 4 are always used for the transmission of the HARQ-ACK, the third PUCCH resource for the transmission of the HARQ-ACK using the PUCCH format 3 is determined based on at least a value set in an information field included in a downlink assignment for the secondary cell, and the fourth PUCCH resource for the transmission of the HARQ-ACK using the PUCCH format 4 is determined based on at least a value set in an information field included in a downlink assignment for the secondary cell. receive a radio resource control, RRC, message including information used for configuring one of a first behavior and a second behavior for transmission of Hybrid Automatic Repeat Request Acknowledgment, HARQ-ACK; and a transmission unit configured to: transmit, with respect to physical downlink shared channel, PDSCH, transmission on a secondary cell, the HARQ-ACK using a third physical uplink control channel, PUCCH, resource and a PUCCH format 3, and transmit, with respect to the PDSCH transmission on the secondary cell, the HARQ-ACK using a fourth PUCCH resource and a PUCCH format 4; transmit, with respect to physical downlink shared channel, PDSCH, transmission on a secondary cell, the HARQ-ACK using a third physical uplink control channel, PUCCH, resource and a PUCCH format 3, and transmit, with respect to the PDSCH transmission on the secondary cell, the HARQ-ACK using a fourth PUCCH resource and a PUCCH format 4; wherein: in a case that the information included in the RRC message indicates to configure the first behavior, the third PUCCH resource and the PUCCH format 3 are used for the transmission of the HARQ-ACK or the fourth PUCCH resource and the PUCCH format 4 are used for the transmission of the HARQ-ACK, in a case that the information included in the RRC message indicates to configure the second behavior, the fourth PUCCH resource and the PUCCH format 4 are always used for the transmission of the HARQ-ACK, the third PUCCH resource for the transmission of the HARQ-ACK using the PUCCH format 3 is determined based on at least a value set in an information field included in a downlink assignment for the secondary cell, and the fourth PUCCH resource for the transmission of the HARQ-ACK using the PUCCH format 4 is determined based on at least a value set in an information field included in a downlink assignment for the secondary cell. in a case that the information included in the RRC message indicates to configure the first behavior, the third PUCCH resource and the PUCCH format 3 are used for the transmission of the HARQ-ACK or the fourth PUCCH resource and the PUCCH format 4 are used for the transmission of the HARQ-ACK, in a case that the information included in the RRC message indicates to configure the second behavior, the fourth PUCCH resource and the PUCCH format 4 are always used for the transmission of the HARQ-ACK, the third PUCCH resource for the transmission of the HARQ-ACK using the PUCCH format 3 is determined based on at least a value set in an information field included in a downlink assignment for the secondary cell, and the fourth PUCCH resource for the transmission of the HARQ-ACK using the PUCCH format 4 is determined based on at least a value set in an information field included in a downlink assignment for the secondary cell.