Method and apparatus for transmitting and receiving wireless signal in wireless communication system
The present invention relates to a wireless communication system and, more particularly, to a method and apparatus therefor, the method comprising the steps of: receiving scheduling information including a DAI value and a 1-bit indicator, the DAI value indicating a modulo value for a scheduling order; receiving data on the basis of the scheduling information; and transmitting A/N feedback including A/N information about the data, wherein a position of the A/N information in the A/N feedback is determined based on (1) the DAI value and (2) a bit value of the 1-bit indicator or on whether the 1-bit indicator is toggled.
1. A method for transmitting a signal by an apparatus in a wireless communication system, the method comprising:
receiving physical downlink control channels (PDCCHs), wherein each of the PDCCHs includes 1-bit information and a Downlink Assignment Index (DAI);
receiving physical downlink shared channels (PDSCHs) based on the PDCCHs; and
transmitting an Acknowledgement/Negative acknowledgement (A/N) feedback including A/N information for the PDSCHs based on the DAI,
wherein each PDSCH of the PDSCHs are associated with a corresponding bit value, and PDSCHs with same bit values are included in a same group, and the A/N feedback includes only A/N information for the PDSCHs included in the same group with a same bit value of the 1-bit information.
2. The method of claim 1 , wherein the DAI is for scheduling order of the PDSCHs within the same group.
3. The method of claim 1 , wherein the A/N feedback is transmitted based on a result of Listen-Before-Talk (LBT) operation.
4. 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 physical downlink control channels (PDCCHs), wherein each of the PDCCHs includes 1-bit information and a Downlink Assignment Index (DAI);
receiving physical downlink shared channels (PDSCHs) based on the PDCCHs; and
transmitting an Acknowledgement/Negative acknowledgement (A/N) feedback including A/N information for the PDSCHs based on the DAI,
wherein each PDSCH of the PDSCHs are associated with a corresponding bit value, and PDSCHs with same bit values are included in a same group, and the A/N feedback includes only A/N information for the PDSCHs included in the same group with a same bit value of the 1-bit information.
5. The apparatus of claim 4 , wherein the DAI is for scheduling order of the PDSCHs within the same group.
6. The apparatus of claim 4 , wherein the A/N feedback is transmitted based on a result of Listen-Before-Talk (LBT) operation.
7. The apparatus of claim 4 , 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.