A terminal comprising: a higher layer processing unit configured to set a first uplink-downlink configuration received by using a system information block, SIB; a reception unit configured to monitor an enhanced physical downlink control channel; and a transmission unit configured to, upon a detection of the enhanced physical downlink control channel in a subframe n-k, transmit a physical uplink control channel having physical uplink control channel format 1b with channel selection in a subframe n, using one of physical uplink control channel resources for channel selection, wherein in a case that the terminal is not configured with a second uplink-downlink configuration, the physical uplink control channel resources correspond to elements within a first downlink association set for the subframe n, the first downlink association set being defined in a first table based on the first uplink-downlink configuration, in a case that the terminal is configured with the second uplink-downlink configuration by using a radio resource control, RRC, signaling, the physical uplink control channel resources consist of a first part of the physical uplink control channel resources and a remaining part of the physical uplink control channel resources in an order of the first part first and then the remaining part, the first part corresponds to the elements within the first downlink association set, and the remaining part corresponds to elements within a second downlink association set for the subframe n, the second downlink association set being defined in a second table based on a combination of the first uplink-downlink configuration and the second uplink-downlink configuration. a higher layer processing unit configured to set a first uplink-downlink configuration received by using a system information block, SIB; a reception unit configured to monitor an enhanced physical downlink control channel; and a transmission unit configured to, upon a detection of the enhanced physical downlink control channel in a subframe n-k, transmit a physical uplink control channel having physical uplink control channel format 1b with channel selection in a subframe n, using one of physical uplink control channel resources for channel selection, wherein in a case that the terminal is not configured with a second uplink-downlink configuration, the physical uplink control channel resources correspond to elements within a first downlink association set for the subframe n, the first downlink association set being defined in a first table based on the first uplink-downlink configuration, in a case that the terminal is configured with the second uplink-downlink configuration by using a radio resource control, RRC, signaling, the physical uplink control channel resources consist of a first part of the physical uplink control channel resources and a remaining part of the physical uplink control channel resources in an order of the first part first and then the remaining part, the first part corresponds to the elements within the first downlink association set, and the remaining part corresponds to elements within a second downlink association set for the subframe n, the second downlink association set being defined in a second table based on a combination of the first uplink-downlink configuration and the second uplink-downlink configuration.