Method and apparatus for transmitting and receiving a feedback signal in a wireless communication system
A method performed by a terminal in a wireless communication system is provided, the method includes receiving, from a base station, a sidelink configured grant for a sidelink transmission, transmitting, to another terminal, a sidelink signal based on the sidelink configured grant, generating a second hybrid automatic repeat request (HARQ) acknowledgement (HARQ-ACK) information based on whether first HARQ-ACK information corresponding to the sidelink signal is received from the another terminal, and reporting on an uplink channel, to a base station, the second HARQ-ACK information.
1. A method performed by a terminal in a wireless communication system, the method comprising:
receiving, from a base station, a sidelink grant for a sidelink transmission;
transmitting, to another terminal, a sidelink signal based on the sidelink grant;
as a response to receiving a first hybrid automatic repeat request (HARQ)-acknowledgement (ACK) information for the sidelink signal from the another terminal, generating a second HARQ-ACK information based on a value of the first HARQ-ACK information;
as a response to not receiving the first HARQ-ACK information for the sidelink signal from the another terminal, generating the second HARQ-ACK information as a negative acknowledgement (NACK); and
reporting on an uplink channel, to a base station, the second HARQ-ACK information.
2. The method of claim 1 , further comprising:
generating a HARQ-ACK codebook based on the second HARQ-ACK information; and
reporting on the uplink channel, to a base station, the HARQ-ACK codebook.
3. The method of claim 2 , wherein a HARQ-ACK information bit associated with a sidelink signal based on a sidelink configured grant is added to end of the HARQ-ACK codebook.
4. The method of claim 1 ,
wherein a timing for reporting the second HARQ-ACK information on a physical uplink control channel (PUCCH) is determined based on an offset between a slot for receiving the first HARQ-ACK information and a slot for reporting the second HARQ-ACK information to the base station, and
wherein the offset is indicated by at least one of downlink control information (DCI) or radio resource control (RRC) signaling.
5. The method of claim 2 , wherein the HARQ-ACK codebook comprises at least one of a dynamic HARQ-ACK codebook or a semi-static codebook.
6. The method of claim 1 , wherein the uplink channel comprises at least one of a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH).
7. The method of claim 6 , wherein the reporting on the uplink channel, to the base station, the second HARQ-ACK information comprises:
in case that resources for transmitting HARQ-ACK information associated with downlink signal received from the base station and resources for reporting the second HARQ-ACK information is overlapped,
reporting on at least one of the PUCCH or the PUSCH, to a base station, the second HARQ-ACK information.
8. The method of claim 7 , wherein a codebook for transmitting the HARQ-ACK information associated with downlink signal and HARQ-ACK codebook associated with the second HARQ-ACK information are separately generated.
9. A terminal in a wireless communication system, the terminal comprising:
a transceiver; and
at least one processor configured to:
receive via the transceiver, from a base station, a sidelink grant for a sidelink transmission,
transmit via the transceiver, to another terminal, a sidelink signal based on the sidelink grant,
as a response to receiving a first hybrid automatic repeat request (HARQ)-acknowledgement (ACK) information for the sidelink signal from the another terminal, generate a second HARQ-ACK information based on a value of the first HARQ-ACK information,
as a response to not receiving the first HARQ-ACK information for the sidelink signal from the another terminal, generate the second HARQ-ACK information as a negative acknowledgement (NACK), and
report via the transceiver on an uplink channel, to a base station, the second HARQ-ACK information.
10. The terminal of claim 9 , wherein the at least one processor is further configured to:
generate a HARQ-ACK codebook based on the second HARQ-ACK information, and
report via the transceiver on the uplink channel, to a base station, the HARQ-ACK codebook.
11. The terminal of claim 10 , wherein a HARQ-ACK information bit associated with a sidelink signal based on a sidelink configured grant is added to end of the HARQ-ACK codebook.
12. The terminal of claim 9 ,
wherein a timing for reporting the second HARQ-ACK information on a physical uplink control channel (PUCCH) is determined based on an offset between a slot for receiving the first HARQ-ACK information and a slot for reporting the second HARQ-ACK information to the base station, and
wherein the offset is indicated by at least one of downlink control information (DCI) or radio resource control (RRC) signaling.
13. The terminal of claim 10 , wherein the HARQ-ACK codebook comprises at least one of a dynamic HARQ-ACK codebook or a semi-static codebook.
14. The terminal of claim 9 , wherein the uplink channel comprises at least one of a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH).
15. The terminal of claim 14 , wherein the at least one processor is further configured to:
in case that resources for transmitting HARQ-ACK information associated with downlink signal received from the base station and resources for reporting the second HARQ-ACK information is overlapped,
report via the transceiver on at least one of the PUCCH or the PUSCH, to a base station, the second HARQ-ACK information.
16. The terminal of claim 15 , wherein a codebook for transmitting the HARQ-ACK information associated with downlink signal and HARQ-ACK codebook associated with the second HARQ-ACK information are separately generated.