Method and apparatus for transmitting and receiving wireless signal in wireless communication system
The present invention relates to a method and an apparatus therefor, the method comprising the steps of: receiving control information for deactivating hybrid automatic repeat and request (HARQ) feedback; receiving a downlink signal on the basis of the HARQ feedback being deactivated; and transmitting, as channel state information (CSI), information on whether or not the downlink signal has been successfully decoded on the basis of a preset time point.
1 . A method by a user equipment (UE) comprising:
receiving channel state information (CSI) report configuration information;
receiving configuration information including bit information for identifying whether a hybrid automatic repeat and request (HARQ) feedback is enabled or disabled;
receiving a downlink control channel including downlink control information,
wherein the downlink control information includes resource assignment information for a downlink data channel; and
receiving the downlink data channel based on the resource assignment information,
wherein the HARQ feedback related to the downlink data channel is disabled based on the configuration information, and
wherein, based on the downlink data channel being received within the latest N time units from a preconfigured time point, HARQ acknowledgement (ACK) information for the downlink data channel is transmitted as CSI based on the CSI report configuration information.
2 . The method of claim 1 , wherein the HARQ ACK information is transmitted through bitmap information, and
wherein the HARQ ACK information is represented by at least one bit included in the bitmap information.
3 . The method of claim 2 , wherein each bit of the bitmap information indicates whether decoding of each of downlink signals received in the N time units is successful.
4 . The method of claim 1 , wherein the HARQ ACK information is represented by 2 bits included in bitmap information and wherein the 2 bits indicate whether decoding of the downlink data channel received in the N time units and the downlink control channel is successful.
5 . The method of claim 1 , wherein the preconfigured timing point includes a timing point before M time units from a reporting timing point of the CSI, a timing point of triggering the reporting of the CSI, or a timing point of receiving control information for triggering the reporting of the CSI and wherein the Mis a natural number equal to or greater than 1.
6 . The method of claim 5 , wherein a value of the M is determined based on a timing offset value configured for a non-terrestrial network (NTN).
7 . The method of claim 1 , wherein the time unit includes a slot, a sub-slot, or a symbol.
8 . The method of claim 1 , wherein the CSI further includes information indicating whether a channel is a Line Of Sight (LOS) environment or a Non-LOS (NLOS) environment.
9 . A user equipment comprising:
at least one Radio Frequency (RF) unit;
at least one processor; and
at least one computer memory operably connected to the at least one processor and enabling the at least one processor to perform an operation when executed, the operation comprising:
receiving channel state information (CSI) report configuration information;
receiving configuration information including bit information for identifying whether a hybrid automatic repeat and request (HARQ) feedback is enabled or disabled;
receiving a downlink control channel including downlink control information,
wherein the downlink control information includes resource assignment information for a downlink data channel; and
receiving a downlink data channel based on the resource assignment information; and
wherein the HARQ feedback related to the downlink data channel is disabled based on the configuration information, and
wherein, based on the downlink data channel being received within the latest N time units from a preconfigured time point, HARQ acknowledgement (ACK) information for the downlink data channel is transmitted as CSI based on the CSI report configuration information.
10 . A method by a base station comprising:
transmitting channel state information (CSI) report configuration information;
transmitting configuration information including bit information for identifying whether a hybrid automatic repeat and request (HARQ) feedback is enabled or disabled to a user equipment;
transmitting a downlink control channel including downlink control information,
wherein the downlink control information includes resource assignment information for a downlink data channel; and
transmitting the downlink data channel to the user equipment based on the resource assignment information,
wherein the HARQ feedback related to the downlink data channel is disabled based on the configuration information, and
wherein, based on the downlink data channel being received within the latest N time units from a preconfigured time point, HARQ acknowledgement (ACK) information for the downlink data channel is received as CSI based on the CSI report configuration information.