Terminal apparatus, base station apparatus, and communication method

A terminal apparatus comprising:

• a reception circuitry configured to receive a first DCI format and a second DCI format, the first DCI format being used for scheduling of a first uplink physical channel and the second DCI format being used for scheduling of a second uplink physical channel;
• and
• a transmission circuitry configured to transmit HARQ-ACK (Hybrid Automatic Repeat request ACKnowledgement) response associated with a physical uplink control channel by using only the first uplink physical channel from the first and second uplink physical channels in a subframe in a serving cell in a case of a collision between a transmission of the physical uplink control channel with HARQ-ACK response and transmissions of the first and second uplink physical channels in the subframe in the serving cell, wherein
• starting symbol of the first uplink physical channel is before starting symbol of the second uplink physical channel,
• the subframe includes 14 symbols for normal cyclic prefix, and
• each of the first and second uplink physical channels are used to transmit an uplink shared channel.

A base station apparatus comprising:

• a transmission circuitry configured to transmit a first DCI format and a second DCI format, the first DCI format being used for scheduling of a first uplink physical channel and the second DCI format being used for scheduling of a second uplink physical channel;
• and
• a reception circuitry configured to receive HARQ-ACK (Hybrid Automatic Repeat request ACKnowledgement) response associated with a physical uplink control channel by using only the first uplink physical channel from the first and second uplink physical channels in a subframe in a serving cell in a case of a collision between a transmission of the physical uplink control channel with HARQ-ACK response and transmissions of the first and second uplink physical channels in the subframe in the serving cell, wherein
• starting symbol of the first uplink physical channel is before starting symbol of the second uplink physical channel,
• the subframe includes 14 symbols for normal cyclic prefix, and
• each of the first and second uplink physical channels are used to transmit an uplink shared channel.

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

• receiving a first DCI format and a second DCI format, the first DCI format being used for scheduling of a first uplink physical channel and the second DCI format being used for scheduling of a second uplink physical channel;
• and
• transmitting HARQ-ACK (Hybrid Automatic Repeat request ACKnowledgement) response associated with a physical uplink control channel by using only the first uplink physical channel from the first and second uplink physical channels in a subframe in a serving cell in a case of a collision between a transmission of the physical uplink control channel with HARQ-ACK response and transmissions of the first and second uplink physical channels in the subframe in the serving cell, wherein
• starting symbol of the first uplink physical channel is before starting symbol of the second uplink physical channel,
• the subframe includes 14 symbols for normal cyclic prefix, and
• each of the first and second uplink physical channels are used to transmit an uplink shared channel.

A communication method used for a base station apparatus, the method comprising:

• transmitting a first DCI format and a second DCI format, the first DCI format being used for scheduling of a first uplink physical channel and the second DCI format being used for scheduling of a second uplink physical channel;
• and
• receiving HARQ-ACK (Hybrid Automatic Repeat request ACKnowledgement) response associated with a physical uplink control channel by using only the first uplink physical channel from the first and second uplink physical channels in a subframe in a serving cell in a case of a collision between a transmission of the physical uplink control channel with HARQ-ACK response and transmissions of the first and second uplink physical channels in the subframe in the serving cell, wherein
• starting symbol of the first uplink physical channel is before starting symbol of the second uplink physical channel,
• the subframe includes 14 symbols for normal cyclic prefix, and
• each of the first and second uplink physical channels are used to transmit an uplink shared channel.