What device is rru

RRU refers to "radio frequency remote unit", referred to as remote control unit, which is a device for mobile base stations. It is a device that converts baseband optical signals into radio frequency signals at the remote end to amplify and transmit them; RRU is equivalent to a transceiver. , receiving the transmitted signal. RRU is divided into 4 large modules: IF module, transceiver module, power amplifier and filter module. The digital intermediate frequency module is used for modulation and demodulation of optical transmission, digital up and down conversion, A/D conversion, etc.; the transceiver module completes the conversion of the intermediate frequency signal to the radio frequency signal; and then through the power amplifier and filter module, the radio frequency signal is emitted through the antenna port .

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

What is rru equipment

RRU's full name is "RemoteRadio Unit", which means "radio frequency remote unit" in Chinese, referred to as remote control unit, and is a device for mobile base stations. The RRU is equivalent to a transceiver and receives transmitted signals.

RRU is a device that converts baseband optical signals into radio frequency signals at the remote end to amplify and transmit them.

The radio frequency remote unit is divided into 4 large modules: IF module, transceiver module, power amplifier and filter module. The digital intermediate frequency module is used for modulation and demodulation of optical transmission, digital up and down conversion, A/D conversion, etc.; the transceiver module completes the conversion of the intermediate frequency signal to the radio frequency signal; and then through the power amplifier and filter module, the radio frequency signal is emitted through the antenna port .

RRU (Radio Frequency Remote Function) appeared in the 3G era.

As early as the 2G era, base stations were also called BTS (base transceiver stations). The 2G network structure mainly consisted of terminals, base station subsystems, bearer networks, and core networks. The base station subsystem includes BTS (base transceiver station) and BSC (base station controller).

The base station in the 2G era has its baseband unit part and radio frequency unit part integrated in a cabinet. The radio frequency unit port is connected to the antenna through a feeder.

In the 3G era, in addition to equipment in which the radio frequency unit and the baseband unit are in a cabinet, there are also base stations with separate baseband units and radio frequency units. The base station is also called a distributed base station, the baseband part is called BBU, and the radio frequency unit is called RRU.

In the beginning, the RRU was still hung on the wall of the computer room, the BBU was installed in a standard cabinet, and the RRU and the antenna were still connected by feeders (mainly 7/8 feeders). As the development continues, the RRU begins to go up the tower. The BBU and the RRU are connected through optical fibers, and the RRU and the antenna are connected through a jumper (1/2 feeder). From then on, maintaining the RRU requires a tower worker.

After entering 4G, the traditional integrated macro base station has been completely replaced by the BBU RRU antenna model, and some BBUs are uniformly placed in a computer room , forming a BBU pool.

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