Method and apparatus for transmitting and receiving downlink control information in wireless communication system

1. A method performed by a terminal in a wireless communication system, the method comprising:

receiving uplink configuration information from a base station;

receiving, from the base station, downlink control information (DCI) including information related to activation of grant-free uplink transmission;

identifying the information related to the activation of the grant-free uplink transmission, based on an uplink frequency domain resource assignment indicator included in the uplink configuration information and an uplink subcarrier spacing configured from the base station; and

transmitting an uplink signal to the base station, based on a result of the identifying.

2. The method of claim 1 , wherein the uplink frequency domain resource assignment indicator includes at least one of a bitmap-based indicator or a resource indication value (RIV)-based indicator.

3. The method of claim 1 , wherein the information related to the activation of the grant-free uplink transmission includes an information field related to frequency assignment.

4. The method of claim 3 , wherein the identifying of the information related to the activation of the grant-free uplink transmission comprises identifying whether the information field indicates activation or release of the grant-free uplink transmission, based on the uplink frequency domain resource assignment indicator and the uplink subcarrier spacing configured from the base station.

5. The method of claim 4 , wherein the transmitting of the uplink signal to the base station comprises, in case that the activation of the grant-free uplink transmission is identified, transmitting the uplink signal to the base station by using the grant-free uplink transmission.

6. The method of claim 4 , wherein the transmitting of the uplink signal to the base station comprises, in case that the release of the grant-free uplink transmission is identified, releasing the grant-free uplink transmission.

7. The method of claim 4 ,

wherein the identifying of the information related to the activation of the grant-free uplink transmission comprises identifying the activation or the release of the grant-free uplink transmission, based on n bits of the information field, and

wherein the n bits are less than a total number of bits corresponding to the information field.

8. The method of claim 4 , wherein the identifying of the information related to the activation of the grant-free uplink transmission comprises identifying the activation or the release of the grant-free uplink transmission, based on a reserved bit of the information field.

9. A method performed by a base station in a wireless communication system, the method comprising:

transmitting uplink configuration information to a terminal;

transmitting, to the terminal, downlink control information (DCI) including information related to activation of grant-free uplink transmission; and

receiving an uplink signal from the terminal, based on a result of identifying the information related to the activation of the grant-free uplink transmission,

wherein the information related to the activation of the grant-free uplink transmission is identified based on an uplink frequency domain resource assignment indicator included in the uplink configuration information and an uplink subcarrier spacing configured from the base station.

10. The method of claim 9 , wherein the uplink frequency domain resource assignment indicator includes at least one of a bitmap-based indicator or a resource indication value (RIV)-based indicator.

11. The method of claim 9 , wherein the information related to the activation of the grant-free uplink transmission includes an information field related to frequency assignment.

12. A terminal in a wireless communication system, the terminal comprising:

a transceiver; and

at least one processor configured to:

receive uplink configuration information from a base station,

receive, from the base station, downlink control information (DCI) including information related to activation of grant-free uplink transmission,

identify the information related to the activation of the grant-free uplink transmission, based on an uplink frequency domain resource assignment indicator included in the uplink configuration information and an uplink subcarrier spacing configured from the base station, and

transmit an uplink signal to the base station, based on a result of the identification.

13. The terminal of claim 12 , wherein the uplink frequency domain resource assignment indicator includes at least one of a bitmap-based indicator or a resource indication value (RIV)-based indicator.

14. The terminal of claim 12 , wherein the information related to the activation of the grant-free uplink transmission includes an information field related to frequency assignment.

15. The terminal of claim 14 , wherein the at least one processor is further configured to identify whether the information field indicates activation or release of the grant-free uplink transmission, based on the uplink frequency domain resource assignment indicator and the uplink subcarrier spacing configured from the base station.

16. The terminal of claim 15 , wherein the at least one processor is further configured to:

in case that the activation of the grant-free uplink transmission is identified, transmit the uplink signal to the base station by using the grant-free uplink transmission, and

in case that the release of the grant-free uplink transmission is identified, release the grant-free uplink transmission.

17. The terminal of claim 15 ,

wherein the at least one processor is further configured to identify the activation or the release of the grant-free uplink transmission based on n bits of the information field, and

wherein the n bits are less than a total number of bits corresponding to the information field.

18. The method of claim 3 ,

wherein the grant-free uplink transmission is identified as being released, in case that the uplink subcarrier spacing is configured 30 kHz and all bits of the information field are set 0.

19. The method of claim 11 ,

wherein the grant-free uplink transmission is identified as being released, in case that the uplink subcarrier spacing is configured 30 kHz and all bits of the information field are set 0.