Method for transmitting or receiving signal in wireless communication system and apparatus therefor

1. A method performed by a user equipment (UE) in a wireless communication system, the method comprising:

receiving first information regarding a reference subcarrier spacing (SCS);

receiving downlink control information (DCI) through a UE group common-physical downlink control channel (PDCCH); and

obtaining, from the DCI, second information regarding a slot format related to the reference SCS,

wherein, based on a first SCS used by the UE being different from the reference SCS, the slot format is applied to a plurality of slots of the first SCS,

wherein the plurality of the slots of the first SCS are related to a slot of the reference SCS, and

wherein in case of the slot format applied to the plurality of the slots of the first SCS, each of a plurality of symbols included in the slot of the reference SCS is determined to be related to one of downlink, uplink or flexible.

2. The method of claim 1 , wherein the first information is received through a higher layer signaling.

3. The method of claim 1 , wherein the reference SCS is less than the first SCS, and

wherein a time duration of one slot of the reference SCS is greater than a time duration of each of the plurality of slots of the first SCS.

4. The method of claim 3 , wherein the first SCS is M times the reference SCS,

wherein the plurality of slots of the first SCS comprises M consecutive slots of the first SCS that are related to the slot of the reference SCS, and

wherein M is a natural number.

5. The method of claim 4 , wherein in case of applying the slot format to the plurality of the slots of the first SCS, M consecutive symbols of the first SCS is determined to be related to one of downlink, uplink, or flexible,

wherein the symbol of the reference SCS is related to the M consecutive symbols of the first SCS.

6. The method of claim 1 , wherein the second information comprises information regarding at least one slot format combination configured in the UE.

7. The method of claim 6 , wherein the UE is configured with a plurality of frequency bands; and

wherein each of the at least one slot format combination comprises a plurality of slot formats for the plurality of frequency bands.

8. The method of claim 7 ,

wherein each of the at least one slot format combination comprises (i) a slot format for a downlink frequency band, and (ii) a slot format for an uplink frequency band, or

wherein each of the at least one slot format combination comprises (i) a slot format for a new radio access technology (NR) frequency band, and (ii) a slot format for a long-term evolution (LTE) frequency band.

9. The method of claim 6 , wherein the information regarding the at least one slot formation combination is received through a higher layer signaling, and

wherein the at least one slot formation combination is a subset of a plurality of slot format combinations supported in the wireless communication system.

10. A method performed by a base station (BS) in a wireless communication system, the method comprising:

transmitting, to a user equipment (UE), first information regarding a reference subcarrier spacing (SCS); and

transmitting, to a UE group comprising the UE through a UE group common-physical downlink control channel (PDCCH), downlink control information (DCI) comprises second information regarding a slot format related to the reference SCS,

wherein, based on a first SCS used by the UE being different from the reference SCS, the slot format is applied to a plurality of slots of the first SCS,

wherein the plurality of the slots of the first SCS are related to a slot of the reference SCS, and

wherein in case of the slot format applied to the plurality of the slots of the first SCS, each of a plurality of symbols included in the slot of the reference SCS is determined to be related to one of downlink, uplink or flexible.

11. A user equipment (UE) configured to operate in a wireless communication system, the UE comprising:

a transmitter;

a receiver; and

at least one processor coupled with the transmitter and the receiver,

wherein the at least one processor is configured to:

receive first information regarding a reference subcarrier spacing (SCS);

receive downlink control information (DCI) through a UE group common-physical downlink control channel (PDCCH); and

obtain, from the DCI, second information regarding a slot format related to the reference SCS,

wherein, based on a first SCS used by the UE being different from the reference SCS, the slot format is applied to a plurality of slots of the first SCS,

wherein the plurality of the slots of the first SCS are related to a slot of the reference SCS, and

wherein in case of the slot format applied to the plurality of the slots of the first SCS, each of a plurality of symbols included in the slot of the reference SCS is determined to be related to one of downlink, uplink or flexible.

12. A base station (BS) configured to operate in a wireless communication system, the BS comprising:

a transmitter;

a receiver; and

at least one processor coupled with the transmitter and the receiver,

wherein the at least one processor is configured to:

transmit, to a user equipment (UE), first information regarding a reference subcarrier spacing (SCS); and

transmit, to a UE group comprising the UE through a UE group common-physical downlink control channel (PDCCH), downlink control information (DCI) comprises second information regarding a slot format related to the reference SCS,

wherein, based on a first SCS used by the UE being different from the reference SCS, the slot format is applied to a plurality of slots of the first SCS,

wherein the plurality of the slots of the first SCS are related to a slot of the reference SCS, and

wherein in case of the slot format applied to the plurality of the slots of the first SCS, each of a plurality of symbols included in the slot of the reference SCS is determined to be related to one of downlink, uplink or flexible.