According to an exemplary embodiment of the present disclosure, the DU constituting the base station to which function-splitting is applied may obtain time information and synchronization information from the CU constituting the same base station and a GPS, and perform synchronization with the CU based on the obtained information.

According to an exemplary embodiment of the present disclosure, the DU constituting the base station to which function-splitting is applied may generate a timing control signal based on the time information and synchronization information obtained from the CU and the GPS, and provide the generated timing control signal to the modem of the DU. Accordingly, the modem of the DU may be operated with the same timing information as the CU directly having the timing information of the base station, thereby improving the reliability of the base station functions.

The exemplary embodiments of the present disclosure may be implemented as program instructions executable by a variety of computers and recorded on a computer readable medium. The computer readable medium may include a program instruction, a data file, a data structure, or a combination thereof. The program instructions recorded on the computer readable medium may be designed and configured specifically for the present disclosure or can be publicly known and available to those who are skilled in the field of computer software.