Simply put, RAN is the base station, which is the network. Before the advent of the 5G era, the base station (RAN) consisted of three parts: the antenna, the RRU (radio-frequency pull-out unit), and the BBU (baseband processing unit). RRU is used to transmit and receive signals, while BBU is used to process signaling messages.… Continue reading What are D-RAN, X-RAN, C-RAN and O-RAN? What’s the relationship between them?
