* High speed interface unit * signal processing unit * power amplifier * doubler * expansion port * Power module
The RRU performs the following functions:
* Receives downlink baseband data from the BBU and sends uplink baseband data to this baseband unit.
*Receives an RF signal from the antenna system, down-converts the signal to an intermediate frequency (IF) signal, amplifies the IF signal, performs analog-to-digital conversion, and up-converts the RF signal to the transmit (TX) band.
* Multiplexing the receive (RX) and TX signal RF channels allows these signals to share the same antenna channel and filter the RX and TX signals.
*Available with built-in offset tee (BT). The built-in BT couples the RF signal and OOK signal and transmits them through TX/RX port A. The built-in BT is also a Tower Mount Amplifier (TMA).
* RRU can use AC/DC power supply module. In this case, this RRU is called a remote communication unit.
RATs and frequeney bands supported by an RRU5909
Type
Frequency Band (MHz)
Receive
Frequency Band
(MHz)
Transmit
Frequency Band
(MHz)
RAT
IBW (MHz)
RRU5909
900 EGSM
880 to 915
925 to 960
GSM, UMTS,LTE FDD. LTENB-IoT.GU.GL. UL. GM.UM. LM, GLM.ULM, and GUL
35
900 PGSM
890 to 915
935 t0 960
GSM. UMTS.LTE FDD, LTENB-IoT, GU.GL. UL. GM.UM. LM.GLM.ULM, and GUL
25
1800
1710 to 1785
1805 to 1880
GSM. LTE FDD.LTE NB-IOT.GL. GM, and LM
45
2100
1920 to 1980
2110 to 2170
UMTS, LTEFDD. and Ul
60
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The RRU performs the following functions:
