Wireless communication device for correcting offset between base station and wireless communication device and method of operating the same

A wireless communication device comprising:

• a plurality of antennas configured to receive a radio frequency (RF) signal from a base station via a plurality of reception beams;
• a local oscillator configured to generate an oscillation signal having a local oscillation frequency;
• and
• processing circuitry configured to,
• generate a baseband signal using the RF signal and the oscillation signal, the baseband signal including a target synchronization signal block (SSB) received via a first reception beam among the plurality of reception beams and at least one neighbor SSB received via a second reception beam among the plurality of reception beams in response to a selected reception beam changing from the second reception beam to the first reception beam,
• determine at least one first SSB from among the at least one neighbor SSB and the target SSB based on a determination of whether a reception quality of the target SSB is lower than a reference quality, and
• perform an automatic frequency control on the local oscillation frequency using the at least one first SSB.

A wireless communication device comprising:

• a plurality of antennas configured receive a radio frequency (RF) signal from a base station via a plurality of reception beams;
• a local oscillator configured to generate an oscillation signal having a local oscillation frequency;
• an RF circuit configured to output a baseband signal based on the RF signal and the oscillation signal;
• and
• a processing circuitry configured to,
• change a selected reception beam from a first reception beam among the plurality of reception beams to a second reception beam among the plurality of reception beams, the baseband signal including a target synchronization signal block (SSB) received via the selected reception beam based on the selected reception beam being changed to the second reception beam, and at least one neighbor SSB being received via the first reception beam,
• determine at least one first SSB from among the at least one neighbor SSB and the target SSB by comparing a reception quality of the target SSB and a reference quality to obtain a determination result, and
• perform an automatic frequency control on the local oscillation frequency using the at least one first SSB based on the determination result.