Does the AAU in communication refer to the base station

What is the difference between AAU and RRU in a communication base station?

What are the functions and differences between AAU and RRU in a communication base station? AAU, active antenna processing unit, is a new type of equipment introduced by the 5G network framework, and has certain functional differences from RRU (Radio Frequency Remote Unit).

What is AAU (active antenna processing unit)?

AAU (Active Antenna Processing Unit) is a new type of equipment introduced by the 5G network framework, and has certain functional differences from RRU (Remote Radio Unit). RRU (Radio Frequency Remote Function) appeared in the 3G era. As early as the 2G era, the base station was also called BTS (Base Transceiver Station).

What are active antenna units (AAUs)?

The advent of Active Antenna Units (AAUs) marked a paradigm shift in base station architecture. AAUs replace the standard antenna to integrate multiple functionalities into a single, compact unit, consolidating the antenna, radio transceiver, and digital signal processing capabilities.

Does AAU add a BBU function?

AAU also adds some BBU functions. In the 5G era, not only is the RRU and the antenna integrated into an AAU, but the physical structure of the BBU has also evolved into a CU (centralized unit) and DU (distributed unit) due to the network framework changed by 5G.