Method and device for controlling transmission power of terminal in beamforming system

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

• transmitting, to a terminal, a control message configuring a sounding reference signal (SRS) transmission, the control message including parameters associated with SRS transmission power for at least one SRS resource;
• transmitting, to the terminal, downlink control information including information indicating an SRS resource among the at least one SRS resource;
• and
• receiving, from the terminal, an SRS in a plurality of symbols of the SRS resource,
• wherein a reception of the SRS is based on an SRS transmission power and a transmission beam configured by the control message for the SRS resource, and
• wherein the SRS transmission power based on the parameters is same for the plurality of symbols of the SRS resource.

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

• a transceiver configured to transmit and receive a signal;
• and
• a controller configured to:
• receive, from a base station, a control message configuring a sounding reference signal (SRS) transmission, the control message including parameters associated with SRS transmission power for at least one SRS resource,
• receive, from the base station, downlink control information including information indicating an SRS resource among the at least one SRS resource,
• identify an SRS transmission power for a plurality of symbols of the SRS resource based on the parameters, and
• transmit, to the base station, an SRS in the plurality of symbols of the SRS resource based on the identified SRS transmission power, by using a transmission beam configured by the control message for the SRS resource,
• wherein the SRS transmission power is same for the plurality of symbols of the SRS resource.

A base station in a wireless communication system, the base station comprising:

• a transceiver configured to transmit and receive a signal;
• and
• a controller configured to:
• transmit, to a terminal, a control message configuring a sounding reference signal (SRS) transmission, the control message including parameters associated with SRS transmission power for at least one SRS resource,
• transmit, to the terminal, downlink control information including information indicating an SRS resource among the at least one SRS resource, and
• receive, from the terminal, an SRS in a plurality of symbols of the SRS resource,
• wherein a reception of the SRS is based on an SRS transmission power and a transmission beam configured by the control message for the SRS resource, and
• wherein the SRS transmission power based on the parameters is same for the plurality of symbols of the SRS resource.