CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a 371 National Stage of International Application No. PCT/KR2018/015663, filed Dec. 11, 2018, which claims priority to Korean Patent Application No. 10-2017-0174164, filed Dec. 18, 2017, the disclosures of which are herein incorporated by reference in their entirety.

BACKGROUND

1. Field

The disclosure relates to a remote radio unit for processing uplink transmission and downlink transmission by using a time division scheme and an operating method thereof, and more specifically, to a remote radio unit for performing control according to whether to switch to uplink transmission or to downlink transmission and an operating method thereof.

2. Description of Related Art

A cloud radio access network (C-RAN) environment is a network environment where a base station is divided into a remote radio unit and a baseband unit. In the C-RAN environment, as the amount of data to be processed by the base station increases, a frequency bandwidth to be endured by a fronthaul connecting the remote radio unit to the baseband unit also gradually increases.

A functional split structure has been proposed as a method of reducing a size of the frequency bandwidth to be endured by the fronthaul. As one of the functional split structures, a structure in which a physical (PHY) layer of the baseband unit is divided into a higher-physical (higher-PHY) layer and a lower-PHY layer, and then the split lower-physical (lower-PHY) layer is implemented by the remote radio unit has been discussed. However, when the lower-PHY layer is implemented by the remote radio unit, resources of the remote radio unit increase, and thus, a solution for reducing the resources used by the remote radio unit when the lower-PHY layer is implemented by the remote radio unit is required.

SUMMARY

Various embodiments provide a remote radio unit performing control according to whether to switch to uplink transmission or to downlink transmission, and an operating method thereof.

