Terminal apparatus and communication method

10:

• A terminal apparatus comprising:
• higher layer processing circuitry configured to set a first configuration associated with a HARQ-ACK;
• and
• reception circuitry configured to detect a first DCI format and a second DCI format;
• and
• transmission circuitry configured to transmit the HARQ-ACK;
• wherein the transmitting circuitry is configured to determine a PUCCH to multiplex type-3 HARQ-ACK codebook in a case that:
• the first DCI format is detected before the second DCI format,
• the second DCI format includes one-shot HARQ-ACK request field with value 1,
• the second DCI format does not schedule a PDSCH reception, and
• detection of the second DCI format satisfies a timeline condition.

11:

• A base station apparatus comprising:
• higher layer processing circuitry configured to set a first configuration associated with a HARQ-ACK;
• and
• transmission circuitry configured to transmit a first DCI format and a second DCI format;
• and
• reception circuitry configured to receive the HARQ-ACK;
• wherein the reception circuitry is configured to receive a PUCCH with type-3 HARQ-ACK codebook in a case that:
• the first DCI format is transmitted before the second DCI format,
• the second DCI format includes one-shot HARQ-ACK request field with value 1,
• the second DCI format does not schedule a PDSCH reception, and
• transmission of the second DCI format satisfies a timeline condition.

12:

• A communication method for a terminal apparatus comprising:
• setting a first configuration associated with a HARQ-ACK;
• and
• detecting a first DCI format and a second DCI format;
• transmitting the HARQ-ACK;
• and
• determining a PUCCH to multiplex type-3 HARQ-ACK codebook in a case that:
• the first DCI format is detected before the second DCI format,
• the second DCI format includes one-shot HARQ-ACK request field with value 1,
• the second DCI format does not schedule a PDSCH reception, and
• detection of the second DCI format satisfies a timeline condition.