Method and device for extending beam area in wireless communication system

An electronic device in a wireless communication system, the device comprising:

• a plurality of antenna sets consisting of a combination of a plurality of antenna elements;
• a radio frequency (RF) transceiver comprising a plurality of phase shifters configured to shift a phase of a signal transmitted/received through the plurality of antenna elements, and a plurality of switches configured to select the plurality of antenna elements;
• a memory configured to store information on mapping of a plurality of beam indices corresponding to a plurality of beamforming directions, the plurality of switches and the plurality of phase shifters;
• and
• a main controller configured to:
• determine a beamforming direction from among the plurality of beamforming directions, and
• transmit, to the RF transceiver, a beam index corresponding to the determined beamforming direction from among the plurality of beam indices, wherein the RF transceiver is configured to:
• receive, from the main controller, the beam index, and
• control the plurality of switches and the plurality of phase shifters simultaneously according to the determined beam index using the information.