how i can carry transmission to RRU

 Hello, dear.

RRU is the RF module, which is a whole board and connects to the antenna. Components of a distributed base station, mainly completing IF processing of signals (such as digital I/Q modulation and demodulation, up/down conversion, DA/AD conversion), RF processing, duplexing and other functions.

You need to use it with BBU(Base Band Unit)

A module of the distributed base station. It provides baseband processing for signals (such as channel coding/decoding, modulation/demodulation), provides transmission management and interface, manages radio resources, and provides clock signals.