Method for terminal for carrying out uplink communication in wireless communication system, and terminal using method

1. A method of performing physical uplink control channel (PUCCH) transmission by a terminal in a wireless communication system, the method comprising:

receiving (i) beam information indicating a beam, among a plurality of beams, to be used for the PUCCH transmission, and (ii) at least one power control parameter for the beam for the PUCCH transmission;

determining a transmission power for the PUCCH transmission based on the beam information and the at least one power control parameter; and

performing the PUCCH transmission using the transmission power for the beam.

2. The method of claim 1 , further comprising:

receiving, from a base station (BS), a plurality of beams;

measuring the plurality of beams; and

transmitting, to the BS, a measurement result for at least some of the plurality of beams.

3. The method of claim 1 , wherein the beam comprises a beam reference signal (BRS).

4. The method of claim 3 , wherein the beam reference signal comprises an identity (ID) that distinguishes the beam from others in the plurality of beams.

5. The method of claim 1 , wherein the at least one power control parameter for the beam for the PUCCH transmission comprises an offset value which determines a modulation and coding scheme (MCS) to be applied for the PUCCH transmission.

6. The method of claim 1 , wherein the at least one power control parameter for the beam for the PUCCH transmission comprises at least one of (i) a resource of the PUCCH for transmission of uplink control information, (ii) a format of the PUCCH, (iii) a transmission technique of the PUCCH, or (iv) a seed value related to generation of a reference signal sequence of the PUCCH.

7. The method of claim 1 , wherein the at least one power control parameter for the beam for the PUCCH transmission comprises at least one of (i) a power offset value applied to transmission of a sounding reference signal (SRS), (ii) a power offset value applied for each PUCCH format, (iii) a power offset value applied to a PUCCH transmit diversity technique, or (iv) a power offset value according to a magnitude of uplink control information payload.

8. The method of claim 1 , wherein the at least one power control parameter for the beam for the PUCCH transmission comprises an uplink semi-persistent scheduling configuration information for each beam.

9. The method of claim 1 , wherein the at least one power control parameter for the beam for the PUCCH transmission comprises at least one of (i) information regarding resource and transmission type of a sounding reference signal (SRS), (ii) uplink transmission mode information, or (iv) timing advanced (TA) information.

10. The method of claim 1 , wherein an uplink semi-persistent scheduling operation is allowed only in some of the plurality of beams configured in the terminal.

11. The method of claim 1 , wherein the at least one power control parameter is independently configured for each of the plurality of beams of the terminal, and is configured to have a same value for some of the plurality of beams and to have different values for others of the plurality of beams.

12. The method of claim 1 , wherein receiving the beam information and the at least one power control parameter is performed through radio resource control (RRC) layer signaling.

13. The method of claim 1 , wherein the beam information comprises a beam index, from among a plurality of beam indices, indicating the beam among the plurality of beams.

14. A user equipment (UE) configured to perform physical uplink control channel (PUCCH) transmission in a wireless communication system, the UE comprising:

at least one transceiver;

at least one processor; and

at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations comprising:

receiving, through the at least one transceiver, (i) beam information indicating a beam, among a plurality of beams, to be used for the PUCCH transmission, and (ii) at least one power control parameter for the beam for the PUCCH transmission;

determining a transmission power for the PUCCH transmission based on the beam information and the at least one power control parameter; and

performing, through the at least one transceiver, the PUCCH transmission using the transmission power for the beam.

15. The UE of claim 14 , wherein the operations further comprise:

receiving, from a base station (BS), a plurality of beams;

measuring the plurality of beams; and

transmitting, to the BS through the at least one transceiver, a measurement result for at least some of the plurality of beams.

16. The UE of claim 14 , wherein the beam comprises a beam reference signal (BRS).

17. The UE of claim 16 , wherein the beam reference signal comprises an identity (ID) that distinguishes the beam from others in the plurality of beams.

18. The UE of claim 14 , wherein the at least one power control parameter for the beam for the PUCCH transmission comprises an offset value which determines a modulation and coding scheme (MCS) to be applied for the PUCCH transmission.

19. The UE of claim 14 , wherein the at least one power control parameter for the beam for the PUCCH transmission comprises at least one of (i) a resource of the PUCCH for transmission of uplink control information, (ii) a format of the PUCCH, (iii) a transmission technique of the PUCCH, or (iv) a seed value related to generation of a reference signal sequence of the PUCCH.

20. The UE of claim 14 , wherein the at least one power control parameter for the beam for the PUCCH transmission comprises at least one of (i) a power offset value applied to transmission of a sounding reference signal (SRS), (ii) a power offset value applied for each PUCCH format, (iii) a power offset value applied to a PUCCH transmit diversity technique, or (iv) a power offset value according to a magnitude of uplink control information payload.