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

A user equipment (UE) configured to transmit hybrid automatic repeat and reQuest-acknowledgement (HARQ-ACK) information 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, when executed by the one or more processors, perform operations that comprise:
• receiving first downlink control information (DCI) based on a first control resource set group and second DCI based on a second control resource set group;
• receiving a first physical downlink shared channel (PDSCH) scheduled by the first DCI and a second PDSCH scheduled by the second DCI;
• determining a physical uplink control channel (PUCCH) resource for a transmission of the HARQ-ACK information which is related to a feedback for the first PDSCH and the second PDSCH;
• and
• transmitting the HARQ-ACK information based on the determined PUCCH resource,
• wherein the first DCI and the second DCI are indexed based on (i) an index of a physical downlink control channel (PDCCH) monitoring occasion, (ii) a cell index, and (iii) an index associated with each control resource set group,
• wherein the PUCCH resource is determined based on a last DCI which is a DCI with a last index among the indexed DCIs, and
• wherein, based on a feedback mode of the HARQ-ACK information being configured as a joint mode, first HARQ-ACK information associated with the first control resource set group and second HARQ-ACK information associated with the second control resource set group are concatenated and transmitted.

A method of receiving, by a base station (BS), hybrid automatic repeat and reQuest-acknowledgement (HARQ-ACK) information in a wireless communication system, the method comprising:

• transmitting, to a user equipment (UE), first downlink control information (DCI) based on a first control resource set group and second DCI based on a second control resource set group;
• transmitting, to the UE, a first physical downlink shared channel (PDSCH) scheduled by the first DCI and a second PDSCH scheduled by the second DCI;
• and
• receiving, from the UE, the HARQ-ACK information based on a physical uplink control channel (PUCCH) resource,
• wherein the HARQ-ACK information is related to a feedback for the first PDSCH and the second PDSCH,
• wherein the first DCI and the second DCI are indexed based on (i) an index of a physical downlink control channel (PDCCH) monitoring occasion, (ii) a cell index, and (iii) an index associated with each control resource set group,
• wherein the PUCCH resource is determined based on a last DCI which is a DCI with a last index among the indexed DCIs, and
• wherein, based on a feedback mode of the HARQ-ACK information being configured as a joint mode, first HARQ-ACK information associated with the first control resource set group and second HARQ-ACK information associated with the second control resource set group are concatenated and transmitted.