Method for transmitting and receiving HARQ-ACK information in wireless communication system and device for same

1. A method performed by a user equipment (UE) in a wireless communication system, the method comprising:

receiving configuration information related to a plurality of COntrol REsource SETs (CORESETs),

wherein the configuration information includes indices of a plurality of CORESET pools, wherein the plurality of CORESET pools are respectively associated with the plurality of CORESETs,

wherein, based on the configuration information, an index of a first CORESET pool associated with a first CORESET and an index of a second CORESET pool associated with a second CORESET are determined as different values;

receiving i) first downlink control information (DCI) based on the first CORESET via a first physical downlink control channel (PDCCH) and ii) second DCI based on the second CORESET via a second PDCCH;

determining a physical uplink control channel (PUCCH) resource for a transmission of hybrid automatic repeat and reQuest-acknowledgement (HARQ-ACK) information; and

transmitting the HARQ-ACK information based on the determined PUCCH resource,

wherein based on a feedback mode of the HARQ-ACK information being a joint feedback mode: the PUCCH resource is determined based on a PUCCH resource indicator field of a last DCI among the first DCI and the second DCI which are ordered based on (i) a cell index, (ii) an index of a PDCCH monitoring occasion, and (iii) an index of each CORESET pool.

2. The method of claim 1 , wherein the configuration information includes transmission configuration indication (TCI) related information associated with each CORESET,

wherein a quasi co location (QCL) based on the TCI related information is applied for a reception of each of the first PDCCH and the second PDCCH, and

wherein the TCI related information includes information representing whether a TCI related field is present in each DCI.

3. The method of claim 1 , further comprising: receiving physical cell group configuration information which is related to cell-group specific L1 parameters,

wherein the physical cell group configuration information includes information related to the feedback mode of the HARQ-ACK information.

4. The method of claim 3 , wherein, based on that the information related to the feedback mode indicates the joint feedback mode, the HARQ-ACK information is generated based on a concatenation of (i) a first HARQ-ACK codebook associated with the first CORESET and (ii) a second HARQ-ACK codebook associated with the second CORESET.

5. The method of claim 4 , wherein, for a PDCCH monitoring occasion of a same index, the order is determined in an ascending order of the cell index, and then the order is determined in an ascending order of the index of the PDCCH monitoring occasion.

6. The method of claim 5 , wherein, for the PDCCH monitoring occasion of the same index and a same cell index, the order is determined in an ascending order of the index of each CORESET pool.

7. The method of claim 6 , wherein, based on that the index of the first CORESET pool is set to 0, and the index of the second CORESET pool is set to 1, the second DCI based on the second CORESET is determined as the last DCI.

8. The method of claim 3 , wherein, based on that the information related to the feedback mode indicates a separate feedback mode, the HARQ-ACK information is configured such that (i) first HARQ-ACK information associated with the first CORESET and (ii) second HARQ-ACK information associated with the second CORESET each are separately constructed.

9. The method of claim 8 , wherein the first HARQ-ACK information and the second HARQ-ACK information each are TDMed (time division multiplexing) in one slot and are transmitted.

10. The method of claim 1 , wherein, based on that the first DCI is DCI format 0_1 including a downlink assignment indicator (DAI) field, it is indicated, based on a value of the DAI field, whether the HARQ-ACK information is multiplexed with a physical uplink shared channel (PUSCH).

11. The method of claim 10 , wherein, based on that the value of the DAI field is indicated as 1 , the HARQ-ACK information and the PUSCH are multiplexed and transmitted.

12. The method of claim 1 , wherein the first DCI is related to scheduling of a first Physical Downlink Shared Channel (PDSCH) and the second DCI is related to scheduling of a second PDSCH, and the HARQ-ACK information is related to at least one of the first PDSCH and the second PDSCH.

13. The method of claim 1 , wherein the PUCCH resource is determined after a PUCCH resource set related to the PUCCH resource is determined,

wherein the PUCCH resource set related to the PUCCH resource is determined based on a payload size, and

wherein the payload size includes a payload size of the HARQ-ACK information in which a first HARQ-ACK codebook associated with the first CORESET and a second HARQ-ACK codebook associated with the second CORESET set are concatenated.

14. A user equipment (UE) configured to operate in a wireless communication system, the UE comprising:

one or more transceivers;

one or more processors; and

one or more memories connected to the one or more processors and storing instructions that, based on being executed by the one or more processors, perform operations that comprise:

receiving configuration information related to a plurality of COntrol REsource SETs (CORESETs),

wherein the configuration information includes indices of a plurality of CORESET pools, wherein the plurality of CORESET pools are respectively associated with the plurality of CORESETs,

wherein, based on the configuration information, an index of a first CORESET pool associated with a first CORESET and an index of a second CORESET pool associated with a second CORESET are determined as different values;

receiving i) first downlink control information (DCI) based on the first CORESET via a first physical downlink control channel (PDCCH) and ii) second DCI based on the second CORESET via a second PDCCH;

determining a physical uplink control channel (PUCCH) resource for a transmission of hybrid automatic repeat and reQuest-acknowledgement (HARQ-ACK) information; and

transmitting the HARQ-ACK information based on the determined PUCCH resource,

wherein based on a feedback mode of the HARQ-ACK information being a joint feedback mode: the PUCCH resource is determined based on a PUCCH resource indicator field of a last DCI among the first DCI and the second DCI which are ordered based on (i) a cell index, (ii) an index of a PDCCH monitoring occasion, and (iii) an index of each CORESET pool.

15. A base station (BS) configured to operate in a wireless communication system, the BS comprising:

one or more transceivers;

one or more processors; and

one or more memories connected to the one or more processors and storing instructions that, based on being executed by the one or more processors, perform operations that comprise:

transmitting, to a user equipment (UE), configuration information related to a plurality of COntrol REsource SETs (CORESETs),

wherein the configuration information includes indices of a plurality of CORESET pools, wherein the plurality of CORESET pools are respectively associated with the plurality of CORESETs,

wherein, based on the configuration information, an index of a first CORESET pool associated with a first CORESET and an index of a second CORESET pool associated with a second CORESET are determined as different values;

transmitting, to the UE, i) first downlink control information (DCI) based on the first CORESET via a first physical downlink control channel (PDCCH) and ii) second DCI based on the second CORESET via a second PDCCH; and

receiving, from the UE, hybrid automatic repeat and reQuest-acknowledgement (HARQ-ACK) information based on a physical uplink control channel (PUCCH) resource,

wherein based on a feedback mode of the HARQ-ACK information being a joint feedback mode: the PUCCH resource is determined based on a PUCCH resource indicator field of a last DCI among the first DCI and the second DCI which are ordered based on (i) a cell index, (ii) an index of a PDCCH monitoring occasion, and (iii) an index of each CORESET pool.

16. The base station of claim 15 , wherein the configuration information includes transmission configuration indication (TCI) related information associated with each CORESET,

wherein a quasi co location (QCL) based on the TCI related information is applicable for a reception of each of the first PDCCH and the second PDCCH, and

wherein the TCI related information includes information representing whether a TCI related field is present in each DCI.

17. The base station of claim 15 , wherein the operations further comprise:

transmitting physical cell group configuration information which is related to cell-group specific L1 parameters,

wherein the physical cell group configuration information includes information related to the feedback mode of the HARQ-ACK information.

18. The base station of claim 17 , wherein, based on that the information related to the feedback mode indicates the joint feedback mode, the HARQ-ACK information is generated based on a concatenation of (i) a first HARQ-ACK codebook associated with the first CORESET and (ii) a second HARQ-ACK codebook associated with the second CORESET.

19. The base station of claim 18 , wherein, for a PDCCH monitoring occasion of a same index, the order is determined in an ascending order of the cell index, and then the order is determined in an ascending order of the index of the PDCCH monitoring occasion, and

wherein, for the PDCCH monitoring occasion of the same index and a same cell index, the order is determined in an ascending order of the index of each CORESET pool.

20. The base station of claim 19 , wherein, based on that the index of the first CORESET pool is set to 0, and the index of the second CORESET pool is set to 1, the second DCI based on the second CORESET is determined as the last DCI.