Communication device and operating method therefor

A method of operating a communication device, the method comprising:

• a channel quality measurement step of measuring channel quality for a plurality of DU links that are one-to-one coupled to each of a plurality of distributed units (DUs) each comprising an antenna;
• a power cut-off control step of controlling power to be cut off to a distributed unit corresponding to a DU link when it is determined that the DU link is in an abnormal status during an operation time of a timer TDU_link associated with a DU link connection in a central unit;
• a power supply control step of controlling power to be supplied to the distributed unit corresponding to the DU link when it is determined that the DU link has returned to a normal status;
• a hardware reset execution step of performing a hardware reset of the distributed unit when a CU link is in an abnormal status before a third timer TCU_link determined by the distributed unit is terminated;
• a DU activation determination step of determining whether activation of the distributed unit is completed during an operation time of a second timer TDU_act associated with the activation of the DU link after the CU link becomes a normal status;
• and
• a software reset execution step of performing a software reset when it is determined that the activation of the distributed unit is not completed.