A system comprising a base station apparatus and a user equipment, UE, the UE comprising: a receiving unit configured to: receive, from the base station apparatus, more than one physical downlink control channels, PDCCHs; receive, from the base station apparatus, more than one physical downlink shared channels, PDSCHs, scheduled by the more than one PDCCHs, respectively, the more than one PDSCHs including a first PDSCH in a first subframe; and a transmitting unit configured to: transmit more than one hybrid automatic repeat request-acknowledgment, HARQ-ACK, responses for the more than one PDSCHs, respectively, on physical uplink control channel, PUCCH, resources determined by the UE, the more than one HARQ-ACK responses including a first HARQ-ACK response for the first PDSCH to be reported in a second subframe; wherein a first time offset between the first subframe and the second subframe is smaller than 4 subframes, and the UE is not expected to receive the more than one PDSCHs for which the more than one HARQ-ACK responses are to be provided by the UE in a same subframe, because the base station apparatus does not transmit the more than one PDSCHs for which HARQ-ACK responses are provided in the same subframe. a receiving unit configured to: receive, from the base station apparatus, more than one physical downlink control channels, PDCCHs; receive, from the base station apparatus, more than one physical downlink shared channels, PDSCHs, scheduled by the more than one PDCCHs, respectively, the more than one PDSCHs including a first PDSCH in a first subframe; and receive, from the base station apparatus, more than one physical downlink control channels, PDCCHs; receive, from the base station apparatus, more than one physical downlink shared channels, PDSCHs, scheduled by the more than one PDCCHs, respectively, the more than one PDSCHs including a first PDSCH in a first subframe; and a transmitting unit configured to: transmit more than one hybrid automatic repeat request-acknowledgment, HARQ-ACK, responses for the more than one PDSCHs, respectively, on physical uplink control channel, PUCCH, resources determined by the UE, the more than one HARQ-ACK responses including a first HARQ-ACK response for the first PDSCH to be reported in a second subframe; wherein a first time offset between the first subframe and the second subframe is smaller than 4 subframes, and the UE is not expected to receive the more than one PDSCHs for which the more than one HARQ-ACK responses are to be provided by the UE in a same subframe, because the base station apparatus does not transmit the more than one PDSCHs for which HARQ-ACK responses are provided in the same subframe. transmit more than one hybrid automatic repeat request-acknowledgment, HARQ-ACK, responses for the more than one PDSCHs, respectively, on physical uplink control channel, PUCCH, resources determined by the UE, the more than one HARQ-ACK responses including a first HARQ-ACK response for the first PDSCH to be reported in a second subframe; wherein a first time offset between the first subframe and the second subframe is smaller than 4 subframes, and the UE is not expected to receive the more than one PDSCHs for which the more than one HARQ-ACK responses are to be provided by the UE in a same subframe, because the base station apparatus does not transmit the more than one PDSCHs for which HARQ-ACK responses are provided in the same subframe.