synonymRRU(RRU) generally refers to RF remote unit
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RF stretchingFull name of unit: Remote Radio Unit. The RF remote unit is divided into near end unit, i.e. wirelessbasebandControl (Radio Server) andRemote computerThat is, radio frequency remote (RRU)
RF remote unit is divided into near end unit, i.e. wirelessbasebandControl (Radio Server) andRemote computerThat is, two parts of radio frequency remote unit (RRU) are connected through optical fiber, and the interface is openCPRIOr IR interface, which can stably connect with the equipment of mainstream manufacturers.RS can be installed in an appropriate computer room, and RRU can be installed at the antenna end. In this way, part of the previous base station module can be separatedRRUSeparation, which can reduce tedious maintenanceWork simplificationTo the RS end, one RS can connect several RRUs, which not only saves space, but also reduces the setup cost and improves the networking efficiency.At the same time, the interface between the two is optical fiber, with less loss.
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3G network is widely usedDistributed base stationArchitecture, RRU (radio frequency remote module) and BBU（Baseband processingBetween units)Optical fiber connection。One BBU can support multiple RRUs.BBU+RRUMultichannelThe scheme can well solve the indoor coverage of large venues.
