Terminal apparatus for transmitting data using uplink grants

A terminal apparatus for communicating with a base station apparatus, the terminal apparatus comprising:

• a receiver configured to detect a first Downlink Control Information (DCI) format, a second DCI format, and Radio Resource Control (RRC) information;
• and
• a transmitter configured to perform data transmission based on any of a first uplink grant which is a configured uplink grant to be available after activation of a periodic radio resource by using a radio resource periodicity included in the RRC information and the first DCI format, a second uplink grant which is a configured uplink grant to be available after activation of the periodic radio resource by using the radio resource periodicity included in the RRC information and the second DCI format, and a third uplink grant using an uplink grant addressed to a Cell-Radio Network Temporary Identifier (C-RNTI) to be available after detection of allocation information of an aperiodic radio resource included in the second DCI format, wherein:
• the receiver is further configured to detect at least two of the first DCI format for the first uplink grant, the second DCI format for the second uplink grant, and the second DCI format for the third uplink grant, and
• the transmitter is further configured to override, in a case that the uplink grant addressed to the C-RNTI of the third uplink grant overlaps in time domain with the configured uplink grant of the second uplink grant, the configured uplink grant of the second uplink grant, and to override, in a case that the configured uplink grant of the first uplink grant overlaps in the time domain with the uplink grant addressed to the C-RNTI of the third uplink grant, the uplink grant addressed to the C-RNTI of the third uplink grant.