Terminal apparatus, base station apparatus, and communication method

A base station apparatus comprising:

• a transmitter configured to transmit a PDCCH (Physical Downlink Control Information) to which DCI (Downlink Control Information) is mapped;
• and
• a receiver configured to receive a first uplink physical channel, and omit a second uplink physical channel, a transmission of which is indicated by the DCI, wherein
• the second uplink physical channel has a higher priority than the first uplink physical channel,
• the first uplink physical channel is associated with a first TAG (Timing advance group),
• the second uplink physical channel is associated with a second TAG,
• the first TAG and the second TAG correspond to one serving cell,
• the first uplink physical channel is started earlier than the second uplink physical channel, and
• the first uplink physical channel overlaps with the second uplink physical channel.

A communication method used for a terminal apparatus, the method comprising:

• receiving a PDCCH (Physical Downlink Control Channel)to which DCI (Downlink Control Information) is mapped;
• and
• transmitting a first uplink physical channel, and omit a second uplink physical channel, a transmission of which is indicated by the DCI, wherein
• the second uplink physical channel has a higher priority than the first uplink physical channel,
• the first uplink physical channel is associated with a first TAG (Timing advance group),
• the second uplink physical channel is associated with a second TAG,
• the first TAG and the second TAG correspond to one serving cell,
• the first uplink physical channel is started earlier than the second uplink physical channel, and
• the first uplink physical channel overlaps with the second uplink physical channel.