Method and device for HARQ-ack feedback transmission or reception for network cooperative communication

A terminal in a wireless communication system supporting multiple transmission reception points (TRPs), the terminal comprising:

• a transceiver configured to transmit or receive a signal;
• and
• a controller connected to the transceiver,
• wherein the controller is configured to:
• receive first configuration information related to generation of hybrid automatic repeat request-acknowledgment (HARQ-ACK) feedback information, and second configuration information that links two search space sets,
• receive information indicating intra-slot based physical downlink control channels (PDCCH) repetitions,
• receive, from one or more TRPs, multiple repetitive PDCCHs for scheduling of one physical downlink shared channel (PDSCH) in a slot based on the second configuration information, wherein the multiple repetitive PDCCHs include a first PDCCH received in a first control resource set (CORESET) and a second PDCCH received in a second CORESET,
• receive the PDSCH, based on the multiple repetitive PDCCHs,
• generate the HARQ-ACK feedback information for the PDSCH, based on the first configuration information,
• determine a physical uplink control channel (PUCCH) resource based on one of the first CORESET and the second CORESET, and
• transmit the HARQ-ACK feedback information on the PUCCH resource.

A method performed by a first transmission reception point (TRP) in a wireless communication system supporting multiple TRPs, the method comprising:

• transmitting, to a terminal, first configuration information related to generation of hybrid automatic repeat request-acknowledgment (HARQ-ACK) feedback information, and second configuration information that links two search space sets;
• transmitting, to the terminal, information indicating intra-slot based physical downlink control channels (PDCCH) repetitions;
• transmitting, to the terminal, at least one repetitive PDCCH for scheduling of one physical downlink shared channel (PDSCH) in a slot based on the second configuration information, wherein the at least one repetitive PDCCH includes a first PDCCH transmitted in a first control resource set (CORESET)
• transmitting, to the terminal, the PDSCH, based on the at least one repetitive PDCCH;
• and
• receiving, from the terminal, the HARQ-ACK feedback information on a physical uplink control channel (PUCCH) resource, the HARQ-ACK feedback information being for the PDSCH generated based on the first configuration information,
• wherein the PUCCH resource is determined based on one of the first CORESET and a second CORESET for a second PDCCH.

A first transmission reception point (TRP) in a wireless communication system supporting multiple TRPs, the first TRP comprising:

• a transceiver configured to transmit or receive a signal;
• and
• a controller connected to the transceiver,
• wherein the controller is configured to:
• transmit, to a terminal, first configuration information related to generation of hybrid automatic repeat request-acknowledgment (HARQ-ACK) feedback information, and second configuration information that links two search space sets,
• transmit, to the terminal, information indicating intra-slot based physical downlink control channels (PDCCH) repetitions,
• transmit, to the terminal, at least one repetitive PDCCH for scheduling of one physical downlink shared channel (PDSCH) in a slot based on the second configuration information, wherein the at least one repetitive PDCCH includes a first PDCCH transmitted in a first control resource set (CORESET),
• transmit, to the terminal, the PDSCH, based on the at least one repetitive PDCCH, and
• receive, from the terminal, the HARQ-ACK feedback information on a physical uplink control channel (PUCCH) resource, the HARQ-ACK feedback information being for the PDSCH generated based on the first configuration information,
• wherein the PUCCH resource is determined based on one of the first CORESET and a second CORESET for a second PDCCH.