Terminal apparatus, base station apparatus, communication method, and integrated circuit
A method for enabling a PUCCH with a TTI equal to or less than 1 ms. A terminal apparatus includes a transmitter configured to transmit an uplink signal on a PUCCH corresponding to a single SC-FDMA symbol, and a controller configured to determine transmit power for transmission on the PUCCH, wherein the uplink signal is generated based on a first sequence and a second sequence, the first sequence is given by applying a first cyclic shift to a third sequence, the second sequence is given by applying a second cyclic shift to the third sequence, and transmit power for transmission on the PUCCH is given based on a value of the first cyclic shift and a value of the second cyclic shift.
1. A terminal apparatus comprising:
reception circuitry configured to receive a Physical Downlink Shared CHannel (PDSCH); and
transmission circuitry configured to transmit at least a Hybrid-Automatic Repeat reQuest-ACKnowledgement (HARQ-ACK) and a Scheduling Request (SR) on a Physical Uplink Control CHannel (PUCCH),
wherein
a first sequence for the PUCCH is given based on a second sequence multiplied by a cyclic shift,
a value of the cyclic shift indicates whether the SR is a positive SR or a negative SR and whether the HARQ-ACK is an ACK or a negative ACKnowledgement (NACK), and
the value is given based on whether the SR is transmitted with the HARQ-ACK on the PUCCH.
2. The terminal apparatus according to claim 1 , wherein
the value is a first value in a case that the SR
or the HARQ-ACK is transmitted, and
the value is a second value which is different from the first value in a case that the SR and the HARQ-ACK are transmitted.
3. A base station apparatus comprising:
transmission circuitry configured to transmit a Physical Downlink Shared CHannel (PDSCH); and
reception circuitry configured to receive at least a Hybrid-Automatic Repeat reQuest-ACKnowledgement (HARQ-ACK) and a Scheduling Request (SR) on a Physical Uplink Control CHannel (PUCCH),
wherein
a first sequence for the PUCCH is given based on a second sequence multiplied by a cyclic shift,
a value of the cyclic shift indicates whether the SR is a positive SR or a negative SR and whether the HARQ-ACK is an ACK or a negative ACKnowledgement (NACK), and
the value is given based on whether the SR is transmitted with the HARQ-ACK on the PUCCH.
4. The base station apparatus according to claim 3 , wherein
the value is a first value in a case that the SR
or the HARQ-ACK is transmitted, and
the value is a second value which is different from the first value in a case that the SR and the HARQ-ACK are transmitted.
5. A communication method used for a terminal apparatus, the method comprising:
receiving a Physical Downlink Shared CHannel (PDSCH); and
transmitting at least a Hybrid-Automatic Repeat reQuest-ACKnowledgement (HARQ-ACK) and a Scheduling Request (SR) on a Physical Uplink Control CHannel (PUCCH),
wherein
a first sequence for the PUCCH is given based on a second sequence multiplied by a cyclic shift,
a value of the cyclic shift indicates whether the SR is a positive SR or a negative SR and whether the HARQ-ACK is an ACK or a negative ACKnowledgement (NACK), and
the value is given based on whether the SR is transmitted with the HARQ-ACK on the PUCCH.
6. A communication method used for a base station apparatus, the method comprising:
transmitting a Physical Downlink Shared CHannel (PDSCH); and
receiving at least a Hybrid-Automatic Repeat reQuest-ACKnowledgement (HARQ-ACK) and a Scheduling Request (SR) on a Physical Uplink Control CHannel (PUCCH),
wherein
a first sequence for the PUCCH is given based on a second sequence multiplied by a cyclic shift,
a value of the cyclic shift indicates whether the SR is a positive SR or a negative SR and whether the HARQ-ACK is an ACK or a negative ACKnowledgement (NACK), and
the value is given based on whether the SR is transmitted with the HARQ-ACK on the PUCCH.