Method and apparatus for transmitting and receiving wireless signal in wireless communication system
The present invention relates to a wireless communication system and, specifically, to a method comprising the steps of: transmitting first A/N information; receiving one or more data after transmitting the first A/N information; receiving downlink control information including a 1-bit indicator; and transmitting second A/N information including an A/N result for the one or more data depending on whether the 1-bit indicator is toggled, and to an apparatus therefor, wherein the second A/N information is generated by reflecting only a data reception state after the transmission of the first A/N information, on the basis of a case where the 1-bit indicator has been toggled; and the second A/N information is generated in consideration of (i) the first A/N information and (ii) the data reception state after the transmission of the first A/N information, on the basis of a case where the 1-bit indicator has not been toggled.
1. A method for transmitting a signal by an apparatus in wireless communication system, the method comprising:
receiving first Downlink Control Information (DCI) including a first New Feedback Indicator (NFI);
receiving a first Physical Downlink Shared Channel (PDSCH) based on the first DCI;
determining (i) first Hybrid Automatic Repeat Request-Acknowledgement (HARQ-ACK) information related to the first PDSCH and (ii) second HARQ-ACK information related to a second PDSCH scheduled by second DCI received before the reception of the first DCI; and
transmitting a physical uplink control channel (PUCCH) including the first HARQ-ACK information and the second HARQ-ACK information,
wherein, based on a value of the first NFI being not toggled with respect to a value of a second NFI included in the second DCI, the second HARQ-ACK information is determined as one of an Acknowledgement (NACK) and a Negative Acknowledgement (NACK) based on whether the second PDSCH is received or not, and
wherein, based on the value of the first NFI being toggled with respect to the value of the second NFI included in the second DCI, the second HARQ-ACK information is determined as a Negative Acknowledgement (NACK) regardless of whether the second PDSCH is received or not, and
wherein each of the first NFI and the second NFI is a 1-bit flag.
2. The method of claim 1 , wherein the PUCCH is transmitted based on a result of Listen-Before-Talk (LBT) operation.
3. The method of claim 1 , wherein the first HARQ-ACK information includes a bit related to the first PDSCH.
4. The method of claim 1 , wherein the PUCCH includes a plurality of A/N results for a same Hybrid Automatic Repeat request (HARQ) process identification (ID) group.
5. The method of claim 1 , wherein the PUCCH includes a plurality of A/N results for a same slot group.
6. An apparatus used for a wireless communication system, the apparatus comprising:
at least one processor; and
at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed by the at least one processor, perform operations comprising:
receiving first Downlink Control Information (DCI) including a first New Feedback Indicator (NFI);
receiving a first Physical Downlink Shared Channel (PDSCH) based on the first DCI;
determining (i) first Hybrid Automatic Repeat Request-Acknowledgement (HARQ-ACK) information related to the first PDSCH and (ii) second HARQ-ACK information related to a second PDSCH scheduled by second DCI received before the reception of the first DCI; and
transmitting a physical uplink control channel (PUCCH) including the first HARQ-ACK information and the second HARQ-ACK information,
wherein, based on a value of the first NFI being not toggled with respect to a value of a second NFI included in the second DCI, the second HARQ-ACK information is determined as one of an Acknowledgement (NACK) and a Negative Acknowledgement (NACK) based on whether the second PDSCH is received or not, and
wherein, based on the value of the first NFI being toggled with respect to the value of the second NFI included in the second DCI, the second HARQ-ACK information is determined as a Negative Acknowledgement (NACK) regardless of whether the second PDSCH is received or not, and
wherein each of the first NFI and the second NFI is a 1-bit flag.
7. The apparatus of claim 6 , wherein the PUCCH is transmitted based on a result of Listen-Before-Talk (LBT) operation.
8. The apparatus of claim 6 , wherein the first HARQ-ACK information includes a bit related to the first PDSCH.
9. The apparatus of claim 6 , wherein the PUCCH includes a plurality of A/N results for a same Hybrid Automatic Repeat request (HARQ) process identification (ID) group.
10. The apparatus of claim 6 , wherein the PUCCH includes a plurality of A/N results for a same slot group.
11. The apparatus of claim 6 , wherein the apparatus is communicable with at least one of a user equipment (UE), a network, a base station (BS), or an autonomous driving vehicle.