A user equipment, UE, that communicates with a base station apparatus, comprising: a receiving unit configured to receive a radio resource control, RRC, message comprising first information used for configuring a periodicity, the receiving unit configured to receive a RRC message comprising second information used for configuring a numerology, the receiving unit configured to detect in a common search space, a physical downlink control channel for a downlink control information, DCI, format with cyclic redundancy check, CRC, scrambled by an ultra-reliable low-latency communications, URLLC, cell radio network identifier, C-RNTI, the URLLC C-RNTI being different from a semi-persistent scheduling C-RNTI, the URLLC C-RNTI being used for indicating an activation and a deactivation for an uplink data transmission on a physical uplink shared channel, PUSCH, based on the periodicity and the numerology; and a transmitting unit configured to transmit confirmation information Medium Access Control, MAC, Control Element, CE, in a case that third information used for indicating the activation for the uplink data transmission on the PUSCH is comprised in the DCI format with the CRC scrambled by the URLLC C-RNTI, the transmitting unit configured to perform, based on a detection of the DCI format comprising the third information, the uplink data transmission on the PUSCH based on the periodicity and the numerology, wherein the transmitting unit is configured to transmit confirmation information MAC CE in a case that fourth information used for indicating the deactivation for the uplink data transmission on the PUSCH is comprised in the DCI format with the CRC scrambled by the URLLC C-RNTI, and the confirmation information MAC CE for the DCI format comprising the third information is identified by a MAC protocol data unit, MAC PDU, subheader with a logical channel identifier, LCID, the confirmation information MAC CE for the DCI format comprising the fourth information is identified by the MAC PDU subheader with the LCID, and the same index of the LCID is used for the confirmation information MAC CE for the DCI format comprising the third information and the confirmation information MAC CE for the DCI format comprising the fourth information. a receiving unit configured to receive a radio resource control, RRC, message comprising first information used for configuring a periodicity, the receiving unit configured to receive a RRC message comprising second information used for configuring a numerology, the receiving unit configured to detect in a common search space, a physical downlink control channel for a downlink control information, DCI, format with cyclic redundancy check, CRC, scrambled by an ultra-reliable low-latency communications, URLLC, cell radio network identifier, C-RNTI, the URLLC C-RNTI being different from a semi-persistent scheduling C-RNTI, the URLLC C-RNTI being used for indicating an activation and a deactivation for an uplink data transmission on a physical uplink shared channel, PUSCH, based on the periodicity and the numerology; and a transmitting unit configured to transmit confirmation information Medium Access Control, MAC, Control Element, CE, in a case that third information used for indicating the activation for the uplink data transmission on the PUSCH is comprised in the DCI format with the CRC scrambled by the URLLC C-RNTI, the transmitting unit configured to perform, based on a detection of the DCI format comprising the third information, the uplink data transmission on the PUSCH based on the periodicity and the numerology, wherein the transmitting unit is configured to transmit confirmation information MAC CE in a case that fourth information used for indicating the deactivation for the uplink data transmission on the PUSCH is comprised in the DCI format with the CRC scrambled by the URLLC C-RNTI, and the confirmation information MAC CE for the DCI format comprising the third information is identified by a MAC protocol data unit, MAC PDU, subheader with a logical channel identifier, LCID, the confirmation information MAC CE for the DCI format comprising the fourth information is identified by the MAC PDU subheader with the LCID, and the same index of the LCID is used for the confirmation information MAC CE for the DCI format comprising the third information and the confirmation information MAC CE for the DCI format comprising the fourth information.