What is RRU, BBU and Antenna?

Refreshing some basic concepts.

  • BBU (Baseband Unit): manages the whole base station, including operating maintenance as will as signal processing.

  • RRU (Remote Radio Unit): interface with Antenna in one side and with BBU in the another side.

    • Converts the RF signal into data signal and the vice versa.
    • Filtering and amplification of RF signal.
    • Decides the coverage of the power capability.
  • Antenna: interfaces with cell phone wirelessly and transmits/receivers RF signals

    • Decides that shape of the coverage