Remote Radio Unit
What is RRU? A remote radio transceiver that connects to an operator radio control panel. Is used interchangeably with RRH (remote radio head), with RRH being the more common of the two. RRHs have become one of the most important subsystems of today's new distributed base stations. The RRH contains the base station's RF circuitry plus analog-to-digital/digital-to-analog converters and up/down converters.