Method and apparatus for HARQ-ACK transmission in wireless communication system

1 . A method comprising:

receiving, by a terminal from a network, an indication of a second hybrid automatic repeat request (HARQ)-acknowledgement (ACK) reporting mode; and

transmitting, by the terminal to the network, HARQ-ACK information multiplexed with another uplink transmission,

wherein, based on the terminal reporting more than one HARQ-ACK information bit, the terminal selects one physical uplink control channel (PUCCH) resource based on values of the HARQ-ACK information bits from a set of PUCCH resources, wherein the number of HARQ-ACK information bits is 2, 3, or 4,

wherein the terminal generates the HARQ-ACK information bits for the second HARQ-ACK reporting mode,

wherein, based on that the terminal is to multiplex second multicast HARQ-ACK information according to the second HARQ-ACK reporting mode with the another uplink transmission in the selected one PUCCH resource, the terminal provides HARQ-ACK information to be multiplexed according to a first HARQ-ACK reporting mode, and

wherein the HARQ-ACK information to be multiplexed that is provided according to the first HARQ-ACK reporting mode is distinguished from first multicast HARQ-ACK information according to the first HARQ-ACK reporting mode.

2 . The method according to claim 1 , wherein:

the HARQ-ACK information provided according to the first HARQ-ACK reporting mode is multiplexed with the another uplink transmission and transmitted.

3 . The method according to claim 1 , wherein the PUCCH resource, in which the HARQ-ACK information provided according to the first HARQ-ACK reporting mode is transmitted, is determined based on a PUCCH resource indicator (PRI) included in DCI which is most recently received among a plurality of downlink control information (DCI) scheduling a plurality of physical downlink shared channels (PDSCHs) respectively, and timing indication information to a PDSCH and a HARQ feedback.

4 . The method according to claim 1 , wherein the PUCCH resource, in which the HARQ-ACK information provided according to the first HARQ-ACK reporting mode is transmitted, corresponds to the selected one PUCCH resource.

5 . The method according to claim 4 , wherein the PUCCH resource, in which the HARQ-ACK information provided according to the first HARQ-ACK reporting mode is transmitted, corresponds to the PUCCH resource for the other uplink transmission.

6 . The method according to claim 1 , wherein:

the second HARQ-ACK reporting mode corresponds to a mode that HARQ-ACK information including only an ACK (acknowledgement) value is not transmitted and HARQ-ACK information including a NACK (non-acknowledgement) value is transmitted, and the second HARQ-ACK reporting mode corresponds to a NACK-only mode, and

the first HARQ-ACK reporting mode corresponds to the mode that the ACK value or the NACK value based on whether a transport block is successfully decoded is generated.

7 . The method according to claim 1 , wherein:

a parameter for more than one NACK only modes is provided for the terminal.

8 . The method according to claim 7 , wherein:

the parameter is configured based on a G-RNTI (Group-Radio Network Temporary Identifier), based on a cell, or based on a CFR (common frequency resource).

9 . The method according to claim 1 , wherein:

multiplexing, in the selected one PUCCH resource, the second multicast HARQ-ACK information according to the second HARQ-ACK reporting mode and the another uplink transmission is based on that the second multicast HARQ-ACK information according to the second HARQ-ACK reporting mode and the another uplink transmission are positioned in a same slot.

10 . The method according to claim 1 , wherein:

providing the HARQ-ACK information according to the first HARQ-ACK reporting mode is applied to a plurality of HARQ-ACK information bits associated with the selected one PUCCH resource or temporarily.

11 . The method according to claim 1 , wherein:

based on the second multicast HARQ-ACK information according to the second HARQ-ACK reporting mode and the another uplink transmission not being multiplexed, the second multicast HARQ-ACK information according to the second HARQ-ACK reporting mode is transmitted through the selected one PUCCH resource.

12 . The method according to claim 1 , wherein:

the another uplink transmission includes at least one of a scheduling request (SR) or channel state information (CSI) reports.

13 . The method according to claim 1 , wherein based on a priority of HARQ-ACK information on a plurality of PDSCHs and the priority of the other uplink transmission:

HARQ-ACK information on the plurality of PDSCHs is transmitted and the other uplink transmission is dropped,

HARQ-ACK information on the plurality of PDSCHs and the other uplink transmission are multiplexed and transmitted, or

HARQ-ACK information on the plurality of PDSCHs is dropped and the other uplink transmission is transmitted,

HARQ-ACK information on the plurality of PDSCHs and the other uplink transmission are transmitted through a separate PUCCH or physical uplink shared channel (PUSCH).

14 . A terminal comprising:

at least one transceiver; and

at least one processor connected to the at least one transceiver,

wherein the at least one processor is configured to:

receive, from a network through the at least one transceiver, an indication of a second hybrid automatic repeat request (HARQ)-acknowledgement (ACK) reporting mode; and

transmit, to the network through the at least one transceiver, HARQ-ACK information multiplexed with another uplink transmission,

wherein, based on the terminal reporting more than one HARQ-ACK information bit, the terminal selects one physical uplink control channel (PUCCH) resource based on values of the HARQ-ACK information bits from a set of PUCCH resources, wherein the number of HARQ-ACK information bits is 2, 3, or 4,

wherein the terminal generates the HARQ-ACK information bits for the second HARQ-ACK reporting mode,

wherein, based on that the terminal is to multiplex the second multicast HARQ-ACK information according to the second HARQ-ACK reporting mode with the another uplink transmission in the selected one PUCCH resource, the terminal provides HARQ-ACK information to be multiplexed according to a first HARQ-ACK reporting mode, and

wherein the HARQ-ACK information to be multiplexed that is provided according to the first HARQ-ACK reporting mode is distinguished from first multicast HARQ-ACK information according to the first HARQ-ACK reporting mode.

15 . A base station comprising:

at least one transceiver; and

at least one processor connected to the at least one transceiver,

wherein the at least one processor is configured to:

transmit an indication of a second HARQ-ACK reporting mode, to at least one terminal through the at least one transceiver; and

receive HARQ-ACK information multiplexed with another uplink transmission, from a terminal of the at least one terminal through the at least one transceiver,

wherein, based on more than one HARQ-ACK information bit being reported by the terminal, one physical uplink control channel (PUCCH) resource based on values of the HARQ-ACK information bits is selected by the terminal from a set of PUCCH resources, wherein the number of HARQ-ACK information bits is 2, 3, or 4,

wherein the HARQ-ACK information bits for the second HARQ-ACK reporting mode is generated by the terminal,

wherein, based on that the second multicast HARQ-ACK information according to the second HARQ-ACK reporting mode is to be multiplexed with the another uplink transmission in the selected one PUCCH resource, HARQ-ACK information to be multiplexed is provided according to a first HARQ-ACK reporting mode, and

wherein the HARQ-ACK information to be multiplexed that is provided according to the first HARQ-ACK reporting mode is distinguished from first multicast HARQ-ACK information according to the first HARQ-ACK reporting mode.