Electronic device transmitting reference signal and method for operating thereof

An electronic device comprising:

• multiple antennas configured to support long-term evolution (LTE) communication and new radio (NR) communication,
• a memory configured to store association information between first multiple output powers used for the LTE communication and second multiple output powers used for the NR communication corresponding to the first multiple output powers respectively, wherein the second multiple output powers include maximum values to be used in the NR communication, which are limited by the first multiple output powers respectively, based on the LTE communication and the NR communication being concurrently performed,
• at least one processor, and
• at least one amplifier configured to amplify and apply sounding reference signals (SRSs) to the multiple antennas respectively,
• wherein the at least one processor is configured to:
• configure an LTE transmission power to be used for data transmission in a physical uplink shared channel (PUSCH) of the LTE communication;
• identify a first NR output power maximum value corresponding to the LTE transmission power based on the association information, wherein a sum of the LTE transmission power and the first NR output power maximum value has a value less than a maximum output power configured for the electronic device,
• identify an SRS output power to be used for SRS transmission through at least one of the multiple antennas,
• identify an actual SRS power based on the SRS output power, a maximum output of the at least one amplifier, and multiple RF path-losses corresponding to the respective multiple antennas, and
• at least temporarily reduce the LTE transmission power based on the actual SRS power being greater than the first NR output power maximum value.