Base station, terminal, and communication method
A terminal includes a receiver, which, in operation, receives time unit information related to an amount of an uplink time resource per a time unit, and receives a number of repetitions over a plurality of the time units, wherein the time unit includes a downlink time resource for a downlink signal and the uplink time resource for a response signal. The amount of the uplink time resource is expressed as a fixed number of consecutive symbols that remains the same number over the plurality of the time units over which the response signal is repeatedly transmitted. The terminal includes a transmitter, which, in operation, repeatedly transmits the response signal over the plurality of the time units.
1. An integrated circuit, comprising:
reception circuitry, which, in operation, controls receiving control information relating to a number of symbols for an uplink time resource in a time unit, the time unit including a downlink time resource for a downlink transmission and the uplink time resource for a transmission of a response signal,
wherein in a case where the response signal is repeated, a same number of symbols is indicated by the control information for each of a plurality of time units; and
transmission circuitry, which, in operation, controls transmitting the response signal over the plurality of time units,
wherein a number of repetitions of the response signal is determined based on a number of bits in the response signal.
2. The integrated circuit according to claim 1 , wherein the transmission circuitry, in operation, controls transmitting the response signal repeatedly over the plurality of time units at a constant time interval.
3. The integrated circuit according to claim 1 , wherein the reception circuitry, in operation, controls receiving another control information relating to a length of the time unit via a cell-specific notification.
4. The integrated circuit according to claim 1 , wherein the number of symbols for the uplink time resource is larger as a length of the time unit is larger.
5. A communication apparatus, comprising:
a receiver, which, in operation, receives control information relating to a number of symbols for an uplink time resource in a time unit, the time unit including a downlink time resource for a downlink transmission and the uplink time resource for a transmission of a response signal,
wherein in a case where the response signal is repeated, a same number of symbols is indicated by the control information for each of a plurality of time units; and
a transmitter, which, in operation, transmits the response signal over the plurality of time units,
wherein a number of repetitions of the response signal is determined based on a number of bits in the response signal.
6. The communication apparatus according to claim 5 , wherein the transmitter, in operation, transmits the response signal repeatedly over the plurality of time units at a constant time interval.
7. The communication apparatus according to claim 5 , wherein the receiver, in operation, receives another control information relating to a length of the time unit via a cell-specific notification.
8. The communication apparatus according to claim 5 , wherein the number of symbols for the uplink time resource is larger as a length of the time unit is larger.
9. A communication method, comprising:
receiving control information relating to a number of symbols for an uplink time resource in a time unit, the time unit including a downlink time resource for a downlink transmission and the uplink time resource for a transmission of a response signal,
wherein in a case where the response signal is repeated, a same number of symbols is indicated by the control information for each of a plurality of time units; and
transmitting the response signal over the plurality of time units,
wherein a number of repetitions of the response signal is determined based on a number of bits in the response signal.
10. The communication method according to claim 9 , further comprising:
transmitting the response signal repeatedly over the plurality of time units at a constant time interval.
11. The communication method according to claim 9 , further comprising:
receiving another control information relating to a length of the time unit via a cell-specific notification.
12. The communication method according to claim 9 , wherein the number of symbols for the uplink time resource is larger as a length of the time unit is larger.