Method and apparatus for transmitting and receiving wireless signal in wireless communication system
A terminal according to one embodiment of the present invention may: receive multicast configuration information including an indicator indicating whether G-RNTI and HARQ processes related to at least one downlink multicast service are activated; receive DCI in which CRC is scrambled with a G-RNTI on a specific downlink frequency resource; perform decoding of a multicast TB carried by a PDSCH on the basis of the DCI; and transmit and receive information on the decoding result of the multicast TB through a PUCCH resource indicated by the DCI on a specific uplink frequency resource, on the basis of the indicator included in the multicast configuration information indicating activation of the HARQ process.
1. A method for receiving a signal by a terminal in a wireless communication system, the method comprising:
receiving, through higher layer signaling, multicast configuration information including a group-radio network temporary identifier (G-RNTI) related to a multicast service and a hybrid automatic repeat request (HARQ)-feedback enablement configuration related to a downlink control information (DCI)-based HARQ-feedback enablement for the multicast service, and bandwidth configuration information for the multicast service;
receiving, through a physical downlink control channel (PDCCH), DCI having a cyclic redundancy check (CRC) scrambled with the G-RNTI;
receiving a physical downlink shared channel (PDSCH) for the multicast service based on the DCI; and
based on (i) the DCI-based HARQ-feedback enablement being configured through the higher layer signaling, and (ii) a HARQ-feedback being indicated as enabled by HARQ enabling/disabling information in the DCI, transmitting HARQ-feedback information for the PDSCH through a physical uplink control channel (PUCCH) resource indicated by the DCI,
wherein the bandwidth configuration information for the multicast service includes a single integer indicating both of a frequency domain location and a bandwidth for the multicast service, the single integer being one of 0 to 37949.
2. The method of claim 1 ,
wherein a service identifier (ID) is configured for the multicast service,
wherein the multicast configuration information provides the G-RNTI and the HARQ-feedback configuration, for the service ID.
3. The method of claim 1 ,
wherein the multicast service is a 3rd generation partnership project (3GPP)-based multicast and broadcast service,
wherein the multicast configuration information provides uplink resource configuration information for the HARQ-feedback.
4. The method of claim 3 , wherein the uplink resource configuration information included in the multicast configuration information is related to PUCCH resource configuration information or uplink bandwidth part (BWP) configuration information.
5. The method of claim 1 , wherein the terminal receives the DCI by monitoring a physical downlink control channel (PDCCH) in a search space associated with a service ID of the multicast service to be received by the terminal.
6. The method of claim 5 , wherein the terminal selects the associated search space from among one or more search spaces configured for the terminal, based on the service ID.
7. The method of claim 1 , wherein the PDSCH includes multicast traffic channel (MTCH) data of the multicast service.
8. A non-transitory computer-readable recording medium having recorded thereon a program for carrying out the method of claim 1 .
9. The method of claim 1 , wherein the frequency domain location and the bandwidth for the multicast service are related to one downlink (DL) bandwidth part (BWP).
10. The method of claim 9 , wherein the one DL BWP is an initial DL BWP.
11. A terminal for receiving a signal in a wireless communication system, the terminal comprising:
a transceiver; and
a processor configured to control the transceiver to:
receive, through higher layer signaling, multicast configuration information including a group-radio network temporary identifier (G-RNTI) related to a multicast service and a hybrid automatic repeat request (HARQ)-feedback enablement configuration related to a downlink control information (DCI)-based HARQ-feedback enablement for the multicast service, and bandwidth configuration information for the multicast service;
receive, through a physical downlink control channel (PDCCH), DCI having a cyclic redundancy check (CRC) scrambled with the G-RNTI;
receive a physical downlink shared channel (PDSCH) for the multicast service based on the DCI; and
based on (i) the DCI-based HARQ-feedback enablement being configured through the higher layer signaling, and (ii) a HARQ-feedback being indicated as enabled by HARQ enabling/disabling information in the DCI, transmit HARQ-feedback information for the PDSCH through a physical uplink control channel (PUCCH) resource indicated by the DCI,
wherein the bandwidth configuration information for the multicast service includes a single integer indicating both a frequency domain location and a bandwidth for the multicast service, the single integer being one of 0 to 37949.
12. A method for transmitting a signal by a base station in a wireless communication system, the method comprising:
transmitting, through higher layer signaling, multicast configuration information including a group-radio network temporary identifier (G-RNTI) related to a multicast service and a hybrid automatic repeat request (HARQ)-feedback enablement configuration related to a downlink control information (DCI)-based HARQ-feedback enablement for the multicast service, and bandwidth configuration information for the multicast service;
transmitting, through a physical downlink control channel (PDCCH), DCI having a cyclic redundancy check (CRC) scrambled with the G-RNTI;
transmitting a physical downlink shared channel (PDSCH) for the multicast service based on the DCI; and
based on (i) the DCI-based HARQ-feedback enablement being configured through the higher layer signaling, and (ii) a HARQ-feedback being indicated as enabled by HARQ enabling/disabling information in the DCI, receiving, from a terminal, HARQ-feedback information for the PDSCH through a physical uplink control channel (PUCCH) resource indicated by the DCI,
wherein the bandwidth configuration information for the multicast service includes a single integer indicating both of a frequency domain location and a bandwidth for the multicast service, the single integer being one of 0 to 37949.
13. A base station in a wireless communication system, the base station comprising:
a transceiver; and
a processor configured to control the transceiver to:
transmit, through higher layer signaling, multicast configuration information including a group-radio network temporary identifier (G-RNTI) related to a multicast service and a hybrid automatic repeat request (HARQ)-feedback enablement configuration related to a downlink control information (DCI)-based HARQ-feedback enablement for the multicast service, and bandwidth configuration information for the multicast service;
transmit, through a physical downlink control channel (PDCCH), DCI having a cyclic redundancy check (CRC) scrambled with the G-RNTI;
transmit a physical downlink shared channel (PDSCH) for the multicast service based on the DCI; and
based on (i) the DCI-based HARQ-feedback enablement being configured through the higher layer signaling, and (ii) a HARQ-feedback being indicated as enabled by HARQ enabling/disabling information in the DCI, receive, from a terminal, HARQ-feedback information for the PDSCH through a physical uplink control channel (PUCCH) resource indicated by the DCI,
wherein the bandwidth configuration information for the multicast service includes a single integer indicating both of a frequency domain location and a bandwidth for the multicast service, the single integer being one of 0 to 37949.