442 mm × 86mm × 310 mm
-48V DC, Voltage: -38.4V DC～-57V DC
+24V DC, Voltage: +21.6V DC～+29V DC
Power consumption (Full-Loaded)
–40°C to 65°C
5% RH to 95% RH
BBU3900 is mainly composed of transmission subsystem, control subsystem, interface module of three parts, the outline drawing as shown in figure, BBU3900 is indoor module, use 2 u high 19 inches wide case, can be installed in the 19-inch standard rack. Transmission subsystem's main function is to provide physical interface with BSC, complete the information interaction between the BBU and BSC. Transmission subsystem for operation and maintenance of BBU and ending connection channel. Control subsystem centrally manage the base station system, including operation and maintenance and signal processing, and provides the system clock.
Six BBU CPRI electric interface the uplink receiving DRFU sent, and send DRFU downstream data.
BBU internal configuration module as shown in figure 1: the typical application is configured to BBU box + interface board UPEA GTMU + power supply environment. Equipped with E1 lightning protection plate UELP UEIU veneer and monitoring board.
Boards of BBU3900
CDMA Main Processing&Transmission Unit
HERT Channel Processing Module
HERT Enhance Channel Processing Module
The GTMU has three types: GTMU, GTMUb, and GTMUc.
The main control and transmission board for the UMTS network.
The main control and transmission board for the LTE network.
The UMPT is a universal main control and transmission board, which can be applied to different radio access technologies (RATs). The UMPT falls into the following types: UMPTa1, UMPTa2, UMPTa6, UMPTb1, UMPTb2, UMPTb3, UMPTb9, UMPTe1, UMPTe2, and UMPTe
The WBBP, a WCDMA baseband processing unit, falls into the following four types:
• WBBPa,WBBPb, WBBPd, and WBBPf.
• The WBBPa and WBBPb are available as of RAN10.0.
• TheWBBPd is available as of RAN12.0 and SRAN5.0.
• The WBBPf is available as of RAN14.0
The LBBP, an LTE baseband processing unit, falls into the following three types: LBBPd1, LBBPd2, and LBBPd3.
The UBBP, a universal baseband processing unit, falls into the following two types:
• UBBPd, including UBBPd1, UBBPd2, UBBPd3, UBBPd4, UBBPd5, and UBBPd6
• UBBPe, including UBBPe1, UBBPe2, UBBPe3, and UBBPe4
The UBRI, a universal baseband radio interface board, is available as of SRAN3.0. The UBRIb is available as of SRAN8.0.
The UTRP, a universal transmission processing unit, falls into the following seven types: UTRP2, UTRP3, UTRP4, UTRP6, UTRP9, UTRPc, and UTRPa
The UCIU, a universal inter-connection infrastructure unit, is available as of SRAN7.0.
The USCU, a universal satellite card and clock unit, falls into the following three types: USCUb11, USCUb14, and USCUb22.
The UELP is a universal E1/T1 lightning protection unit.
The UFLP, a universal FE lightning protection unit, falls into the following two types: UFLP and UFLPb. The UFLP provides lightning protection for two FEs. The UFLPb provides lightning protection for two FEs/GEs
The USLP2 is a universal dry contact signal lightning protection unit.
The UPEU, a universal power module for the BBU3900, falls into three types: UPEUa, UPEUc, and UPEUd
The UEIU, a universal environment interface unit, transmits information reported by the environment monitoring device and alarm information to the main control board
The FAN is a fan unit for the BBU3900 and falls into two types: FAN and FANc
The UCCU, a universal inter-connection combo unit, allows a long-distance connection between the BBU and USU in BBU interconnection scenarios
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