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remote radio unit (RRU)

The Remote Radio Unit (RRU), functionally comparable to the Remote Radio Head

(RRH), performs a radio transceiver function.

Remote Radio Head (RRH), photo: global-sei.com

Remote Radio Head (RRH), photo: global-sei.com

The RRU unit is a remote RF processing unit with antennas and computing functions. They are connected via fiber optics to the central baseband unit in the radio base station. To minimize attenuation through the antenna cable, Remote Radio Units are attached to the antenna mast, usually directly next to or below the radio antenna. RRU units communicate with the baseband unit via the CPRI interface and with the subscriber

unit via the air interface

. The remote radio unit is controlled by the radio networkcontroller. Both units, the RRU unit and the controller form the radio base station.

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Englisch: remote radio unit - RRU
Updated at: 27.02.2021
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Translations: DE