A terminal apparatus configured to communicate with a base station apparatus, the terminal apparatus comprising: a radio resource control unit configured to and/or programmed to configure, based on a radio resource control, RRC, signaling, a first enhanced physical downlink control channel, EPDCCH, set and a second EPDCCH set for the terminal apparatus to monitor an EPDCCH; configure, a transmission type of the first EPDCCH set and a transmission type of the second EPDCCH set with a localized transmission type or a distributed transmission type, the transmission type of the first EPDCCH set and the transmission type of the second EPDCCH set being configured a same transmission type, a reception processing unit configured to and/or programmed to monitor a set of EPDCCH candidates based on the first EPDCCH set and the second EPDCCH set, a first physical uplink control channel, PUCCH, resource offset being configured for the first EPDCCH set by the RRC signaling, a second PUCCH resource offset being configured for the second EPDCCH set by the RRC signaling; and a transmission unit configured to and/or programmed to transmit a hybrid automatic repeat request-acknowledgement, HARQ-ACK, for a physical downlink shared channel transmission indicated by a detection of an EPDCCH, the HARQ-ACK being transmitted using a PUCCH resource, wherein each of the plurality of EPDCCH sets consists of a plurality of physical resource block pairs, the PUCCH resource associated with an EPDCCH set which is one of the plurality of EPDCCH sets is determined based on at least a lowest enhanced control channel element, ECCE, index used to construct the EPDCCH in the EPDCCH set, each of the first EPDCCH set and the second EPDCCH set includes a set of ECCEs, the first PUCCH resource offset indicates the PUCCH resource in which association with an ECCE index of the first EPDCCH set is started, the second PUCCH resource offset indicates the PUCCH resource in which association with an ECCE index of the second EPDCCH set is started, and the first PUCCH resource offset is different from the second PUCCH resource offset. a radio resource control unit configured to and/or programmed to configure, based on a radio resource control, RRC, signaling, a first enhanced physical downlink control channel, EPDCCH, set and a second EPDCCH set for the terminal apparatus to monitor an EPDCCH; configure, a transmission type of the first EPDCCH set and a transmission type of the second EPDCCH set with a localized transmission type or a distributed transmission type, the transmission type of the first EPDCCH set and the transmission type of the second EPDCCH set being configured a same transmission type, a reception processing unit configured to and/or programmed to monitor a set of EPDCCH candidates based on the first EPDCCH set and the second EPDCCH set, a first physical uplink control channel, PUCCH, resource offset being configured for the first EPDCCH set by the RRC signaling, a second PUCCH resource offset being configured for the second EPDCCH set by the RRC signaling; and a transmission unit configured to and/or programmed to transmit a hybrid automatic repeat request-acknowledgement, HARQ-ACK, for a physical downlink shared channel transmission indicated by a detection of an EPDCCH, the HARQ-ACK being transmitted using a PUCCH resource, wherein each of the plurality of EPDCCH sets consists of a plurality of physical resource block pairs, the PUCCH resource associated with an EPDCCH set which is one of the plurality of EPDCCH sets is determined based on at least a lowest enhanced control channel element, ECCE, index used to construct the EPDCCH in the EPDCCH set, each of the first EPDCCH set and the second EPDCCH set includes a set of ECCEs, the first PUCCH resource offset indicates the PUCCH resource in which association with an ECCE index of the first EPDCCH set is started, the second PUCCH resource offset indicates the PUCCH resource in which association with an ECCE index of the second EPDCCH set is started, and the first PUCCH resource offset is different from the second PUCCH resource offset.