Method and apparatus for transmitting uplink channel in unlicensed band

1. A method for transmitting an uplink channel by a User Equipment (UE) in an unlicensed band, the method comprising:

determining, by the UE, interlacing information according to subcarrier spacing (SCS) of an unlicensed band;

configuring, by the UE, an interlace for an uplink channel based on the determined interlacing information; and

transmitting the uplink channel by applying the interlace.

2. The method of claim 1 , wherein the interlacing information comprises at least one of a number of interlaces and a number of physical resource blocks (PRBs) for each interlace.

3. The method of claim 2 , wherein, if the subcarrier spacing is 15 kHz, the number of interlaces of the interlacing information is 10, and the number of physical resource blocks for each interlace thereof is 10.

4. The method of claim 2 , wherein, if the subcarrier spacing is 30 kHz, the number of interlaces of the interlacing information is 5, and the number of physical resource blocks for each interlace thereof is 10.

5. The method of claim 1 , wherein at least one of a number of interlaces or a number of physical resource blocks for each interlace in the interlacing information is determined based on a bandwidth in which the uplink channel is transmitted.

6. A method of receiving an uplink channel by a base station in an unlicensed band, the method comprising:

receiving an uplink channel with an interlace applied in an unlicensed band from a user equipment (UE); and

obtaining information included in the uplink channel,

wherein the interlace applied in the unlicensed band is configured by the UE based on interlacing information, and the interlacing information is determined by the UE according to a subcarrier spacing (SCS) of the unlicensed band.

7. The method of claim 6 , wherein the interlacing information comprises at least one of a number of interlaces and a number of physical resource blocks (PRBs) for each interlace.

8. The method of claim 7 , wherein, if the subcarrier spacing is 15 kHz, the number of interlaces of the interlacing information is 10, and the number of physical resource blocks for each interlace thereof is 10.

9. The method of claim 7 , wherein, if the subcarrier spacing is 30 kHz, the number of interlaces of the interlacing information is 5, and the number of physical resource blocks for each interlace thereof is 10.

10. The method of claim 6 , wherein at least one of a number of interlaces and a number of physical resource blocks for each interlace in the interlacing information is determined based on a bandwidth in which the uplink channel is transmitted.

11. A User Equipment (UE) for transmitting an uplink channel in an unlicensed band, the UE comprising:

a controller configured to determine interlacing information according to subcarrier spacing (SCS) of an unlicensed band and configure an interlace for an uplink channel based on the determined interlacing information; and

a transmitter configured to transmit the uplink channel by applying the interlace.

12. The UE of claim 11 , wherein the interlacing information comprises at least one of a number of interlaces and a number of physical resource blocks (PRBs) for each interlace.

13. The UE of claim 12 , wherein, if the subcarrier spacing is 15 kHz, the number of interlaces of the interlacing information is 10, and the number of physical resource blocks for each interlace thereof is 10.

14. The UE of claim 12 , wherein, if the subcarrier spacing is 30 kHz, the number of interlaces of the interlacing information is 5, and the number of physical resource blocks for each interlace thereof is 10.

15. The UE of claim 11 , wherein at least one of a number of interlaces and a number of physical resource blocks for each interlace in the interlacing information is determined based on a bandwidth in which the uplink channel is transmitted.