Method for transmitting/receiving uplink channel in wireless communication system, and device therefor

A UE for transmitting an uplink control channel in a wireless communication system, the UE comprising:

• a Radio Frequency (RF) unit for transmitting and receiving a radio signal;
• and
• a processor functionally connected to the RF unit,
• wherein the processor is configured to:
• receive, from a base station via higher layer signaling, beam information for a transmission of the uplink control channel;
• and
• transmit, to the base station, the uplink control channel, via at least one beam configured based on the beam information,
• wherein the beam information includes information for a pre-configured beam set including the at least one beam,
• wherein the at least one beam is related to a reference signal which is transmitted and received between the base station and the UE,
• wherein the at least one beam is based on a single beam or a plurality of beams in the pre-configured beam set,
• wherein the at least one beam is configured to be the plurality of beams in the pre-configured beam set based on a specific condition being satisfied, and
• wherein the specific condition is satisfied based on that a value represented by measurement information for the reference signal is smaller than a pre-configured threshold.

A method for receiving, by a base station, an uplink control channel in a wireless communication system, the method comprising:

• transmitting, to a user equipment via higher layer signaling, beam information for a transmission of the uplink control channel;
• and
• receiving, from the user equipment, the uplink control channel, via at least one beam configured based on the beam information,
• wherein the beam information includes information for a pre-configured beam set including the at least one beam,
• wherein the at least one beam is related to a reference signal which is transmitted and received between the base station and the user equipment,
• wherein the at least one beam is based on a single beam or a plurality of beams in the pre-configured beam set,
• wherein the at least one beam is configured to be the plurality of beams in the pre-configured beam set based on a specific condition being satisfied, and
• wherein the specific condition is satisfied based on that a value represented by measurement information for the reference signal is smaller than a pre-configured threshold.