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Internal
WCDMA DBS3900 SystemHardware Structure
DBS3900V200R010
WRAN Training Team
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DBS3900 is new generation distribution
NodeB which is produced by Huawei Co.
Ltd.
In this course, well mainly learn the
hardware system structure, application
scenarios, basic functions of modules and
networking and configuration of the DBS3900
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Upon completion of this course, you will be able to:
Know application scenarios of DBS3900
Master the hardware structure of DBS3900
Master the functions of different modules
Master the cables connection rules of DBS3900
Know networking and configuration examples
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DBS3900 System Description
DBS3900 Hardware Description
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DBS3900 Abbreviations
WMPT WCDMA Main Processing and Transmission Unit
WBBPa
WRFU WCDMA Radio Filter Unit
AISG Antenna Interface Standard Group
TMA Tower Mounted Amplifier
SRXU Slim Receive Unit
UBFA
UEIU Universal Environment Interface unit
UELP Universal E1/T1 Lighting Protection unit
UFLP Universal FE/GE Lighting Protection unit
UPEU Universal Power and Environment Interface Unit
CPRI Common Protocol Radio Interface
UTRP Universal Transmission Processing Unit
RCU Remote Control Unit
APM
Universal BBU Fan Unit Type A (2U)
WCDMA Baseband Process unit Type A
Advanced Power Module
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Chapter1 General DescriptionChapter1 General Description
Chapter2 Hardware IntroductionChapter2 Hardware Introduction
Chapter3 Networking and ConfigurationChapter3 Networking and Configuration
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DBS3900 Overview
DBS3900 is a distributed NodeB of forth generation NodeB.
DBS3900 system consists of:
BBU3900
RRU3804 or RRU3801E
Antenna and feeder system
RNC
-48V DC
power Power cable
Power cable
Trunk cable Fiber or CPRI high-speedsignal cable
RRU
3804 or 3801E
BBU3900
Grounding cable
-48V/ 24VDC power Grounding cable
Antenna
TMA
RF jumper
Feeder
RF jumper
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BBU3900 in a Standard 19-Inch Cabinet
Application scenario 1
Launch 3G services on the basis of a 2G site
Benefit of this Application Scenario:
Can reside in any standard 19-inch-wide and 2-U-high cabinet
Can be installed on the metal pole and close to the antenna
The BBU3900 and RRU can share the power supply and antenna systems of the 2G network
Enables operators to launch 3G services on the existent 2G network at a very low cost
2G BTS RF Cable
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DBS3900 Integrated Application
Launch a new 3G
outdoor site without an
equipment room
VDF Spain: RRU on Tower
Shelter Air-conditioner
Application scenario 2
BBU3900+RRU+APMBBU3900+RRU+APMBBU3900+RRU+APM
BBU
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DBS3900 Product Family
Remote radio unit
RRU3804 RRU3801E
Distribute NodeB DBS3900Distribute NodeB DBS3900
Baseband unit
BBU3900
Remote radio unit
SRXU
+
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DBS3900 Capacity and Characteristics
Specification of the DBS3900
High capacity;
BBU3900 supports 24 cells, with 1,536 UL CEs and 1,536 DL CEs.
One RRU3804 supports the 4-carrier configuration.
When the NodeB expands from 1x1 to 1x4 or from 3x1 to 3x4, no
extra RRU is required.
Characteristics of the DBS3900
Supports RRU cascading
When using the 1.25 G optical module, cascading levels 4
When using the 2.5 G optical module, cascading levels 8
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DBS3900 Capacity and Characteristics
Supports ATMIP and ATM/IP dual stack networking;
Supports multiple clock and synchronization modes;
Iub interface clock
GPS clock and
Internal clock
Supports high-speed packet access (HSPA) technology
HSDPA allows the traffic at up to 14.4 Mbps for a single cell
The peak uplink data rate of an HSUPA subscriber is up to 5.76 Mbit/s.
Supports the Multimedia broadcast and multicast service (MBMS)
Characteristics of the DBS3900
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Chapter1 General DescriptionChapter1 General Description
Chapter2 Hardware IntroductionChapter2 Hardware Introduction
Chapter3 Networking and ConfigurationChapter3 Networking and Configuration
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Chapter2 Hardware IntroductionChapter2 Hardware Introduction
Section1 BBU HardwareSection1 BBU Hardware
Section2Section2 RRU HardwareRRU Hardware
Section3 DBS3900 CablesSection3 DBS3900 Cables
Section4 Antenna and Feeder SubsystemSection4 Antenna and Feeder Subsystem
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Logical Structure of the BBU3900
TO RRU
Clock modeSignaling
Processing
Operation&
Maintenance
Power mode
E1/T1
FE
Transport
Interface
Transmission
Adaptat ion
Protocol
Processing
FPProcessing
Codling
Decoding Demodulation
Modulation
Interfac
e
Module
Transport Subsystem Baseband Subsystem
Control Subsystem
External SubsystemOMC
CPRI
RNC
Power
Control
information
Control flowData flow
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BBU3900 Module Introduction
Mandatory boards and modulesWMPT, WBBP, UBFA, and UPEU
The optional boards are the UELP, UFLP, UTRP, and UEIU.
Full configuration
Typical configuration
BBU3900 Module
Baseband unitBaseband unit
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BBU3900 Module Introduction
Slot
16
Slot 18
Slot 19
SLOT0
SLOT1
SLOT2
SLOT3
SLOT4
SLOT5
SLOT6
SLOT7
Active and standby slot definitiononly for UTRP board
B
F
A
PEU/
EIU
PEU/
EIU
WBBP
WBBP
WBBP
WBBP
UTRP
UTRP
WMPT
WMPT
Slot boards definition
Board Slot 0 Slot 1 Slot 2 Slot 3 Slot 4 Slot 5 Slot 6 Slot 7
WMPT available avai lable
UTRP available available available available available available
WBBP available available available available available available
UELP available avai lable
UFLP available avai lable
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BBU Module --- WMPT Board
Board number
maximum is 2 for one BBU
mandatory board
working in active and standbymode
4E1:DB26
IP transmission onElectr ical Port :RJ45
IP transmission
Optical signals: SFP
GPS antenna: SMA
Commissioning:RJ45
Loading Testing:USB
LEDs
Main Functions
Providing OM functions
Controlling other boards in the system and
providing the reference clockProviding USB ports for automatic NodeB
upgraded
Providing transmission port for Iub interface
Providing OM channels
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BBU Module --- WMPT Board
LEDs of running status of WMPT:
Label Color Status Description
ON The board has power input, yet the board is
faulty.
OFF The board has no power input.
1s ON, 1s OFF The board is running as configured.
0.125s ON, 0.125s OFF The software is being loaded to the board, or
the board is not in use.
ON The board is reporting hardware alarms.
OFF The board is running properly.
ON The board is in active mode.
OFF The board is in standby mode.
ACT Green
ALM Red
RUN Green
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BBU Module --- WMPT Board
LED Color Status Description
ON The connections are functional.
OFF The connections are faulty.
Blinking There is ongoing data transmission.
OFF There is no data transmission.
ON The connections are functional.
OFF The connections are faulty.
Blinking There is ongoing data transmission.
OFF There is no data transmission.
Yellow
GreenLEDs beside the
ETH port
Yellow
GreenLEDs beside theFE1 and FE0 opt ical
port
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BBU Module --- WMPT Board
Two DIP Switches :
SW1 for setting the E1/T1
working mode
SW2 for setting the
protection ground for the E1.
Settings of SW1
Bit T1 Mode 120-ohm E1
BalancedMode
75-ohm E1
UnbalancedMode
1 ON OFF ON
2 ON OFF ON
3 OFF ON ON
4 OFF ON ON
ON
ON
ON
ON
75-ohm E1
Unbalance
d Mode
The RRING is for
connected to the
protection ground
Description
OFF
OFF
OFF
OFF
120-ohm E1
Balanced Mode
4
3
2
1
Bit
Settings of SW2
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BBU Module --- WBBPa Board
Board number mandatory, maximum is 6
Main Functions
Providing the CPRI interface for communication between the BBU and the
WRRU or WRFU
Processing uplink and downlink baseband signals and support HSUPA and
HSDPA function
Supporting 1+1 backup of the CPRI interface
According to the board chip processing capability, WBBP module include seven
specifications. Current WBBP is the A version, called WBBPa.
CPRI 0 ~2 (1.25G-2.5G): SFP LEDs
BBU M d l WBBP B d
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BBU Module --- WBBPa Board
LED of running status of board :
Label Color Status Description
ON The board has power input, yet the board is faulty.
OFF The board has no power input or is faulty.
1s ON, 1s OFF The board is running properly.
0.125s ON/OFF Software is being loaded to the board.
ON The board is running properly.
OFF The board is not in use.
OFF The board is running properly.
ON The board has alarms on hardware and it should be replaced with a new one.
ALM Red
ACT Green
RUN Green
The RRU on the CPRI link is faulty in the antenna system connection.Blinking at 0.5 Hz
The RRU on the CPRI link is faulty in hardware.Blinking at 2 Hz
The CPRI links over the optical cable are faulty.ON
normalOFF
Red
Green
CPRI0
CPRI1
CPRI2
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BBU Module --- WBBP Board
There are 2 kinds of Baseband card, WBBPa and WBBPb.The WBBPa can Process uplink and downlink baseband signals:
Support HSDPA (2 ms TTI) and support for HSUPA phase1 (10 ms TTI).
The WBBPb can Process uplink and downlink baseband signals.
Support HSDPA (2 ms TTI), and support for HSUPA phase2 (2 ms TTI).
Board
Type Cell
Uplink R99
/HSUPA CE
Downlink
R99 CE HSDPA Capacity
HSDPA
throughput
HSUPA
throughput
WBBPa 3 cells 128 256 45 HS-PDSCH codes 15Mbps 6Mbps
WBBPb1 3 cells 64 64 45 HS-PDSCH codes 15Mbps 6Mbps
WBBPb2 3 cells 128 128 45 HS-PDSCH codes 15Mbps 6Mbps
WBBPb3 6 cells 256 256 90 HS-PDSCH codes 30Mbps 12Mbps
WBBPb4 6 cells 384 384 90 HS-PDSCH codes 30Mbps 12Mbps
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Label Color Status Description
0.125s ON,0.125s OFF
The module is not registered, and noalarm is reported.
1s ON, 1s OFF The board is running properly.
Red ON The module is reporting alarms.
GreenSTATE
Board number mandatory, maximum is 1
Main Functions
Controlling the fan speed
Reporting the fan status to the WMPT
Detecting the temperature of the fan board
BBU Module --- UBFA Board
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Panel of the UPEA Panel of the UPEB
BBU Module --- UPEU Board
Board number mandatory, maximum is 2, 1+1 backup
Main Functions
Converting -48 V or +24 V DC power input to +12 V DC power that is supported
by boards
Reporting alarms related to input and output under voltage
Providing transmission ports for RS485 signals and 8 dry contact alarm signals
-48V to +12V +24V to +12V
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LED: The UPEU has one LED, indicating the running status of the board.
Label Color Status Description
ONThe board is running properly.
OFF The board has no power input, or
the board is faulty.
RUN Green
Socket and Port: The UPEU has one socket and four ports.
RJ451MON0
Transmitting RS485 environment
monitoring signals
RJ451MON1
RJ451EXT-ALM0
Transmitting dry contact alarm signalsRJ451EXT-ALM1
DC power input3V31PWR
FunctionConnector TypeQuantityLabel
BBU Module --- UPEU Board
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The UTRP provides ports for eight E1s/T1s and implements transport such as IP and
ATM between the BBU3900 and the RNC.
Label Color Status Description
ON The board has power input, yet the board is faulty.
OFF The board has no power input or is faulty.
1s ON, 1s OFF The board is running properly.
0.125s ON, 0.125s OFF Software is being loaded to the board.
2s ON, 2s OFF The board is under test.
ON The board is in active mode.
OFF The board is in standby mode.
OFFThe board is running properly.
ON The board is reporting alarms and is faulty.
ALM Red
ACT Green
RUN Green
BBU Module --- UTRP Board
4 E1:DB26
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BBU Module --- UTRP Board Type WCDMA UTRP extend transmission board
UTRP board should add sub board to provide the different interface type
WD22UTRP is the main board name. The UTRP has three sub-boards in current
version
UAEU: Eight ATM over E1s/T1s
UIEU: Eight IP over E1s/T1s
UUAS: One unchannelized ATM over SDH/SONET(STM-1/OC-3) interface
The board in gray table is not be delivered currentlyTransmissionBoard name
Sub board
name
Interface type Interface specification
WD22UEEU WD22UEEC FE/GE electrical board 2*FE/GE (10/100/1000M adaptive)
WD22UEOU WD22UEOC
WD22UAEU WD22UAEC
WD22UIEU WD22UPEC
WD22UCPU WD22UCPS
WD22UCAU WD22UCAS
FE/GE optical board 2*FE/GE (10/100/1000M configured)
E1/T1 ATM interface sub board 8* E1/T1
E1/T1 IP interface sub board 8*E1/T1
Channelization IP optical sub board 1*STM-1
WD22UUPU WD22UUPS Unchanneliazation IP optical sub board 1*STM-1
Channelization ATM optical sub board 1*STM-1
WD22UUAU WD22UUAS Unchanneliazation ATM optical sub board 1*STM-1
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Label Connector Type
MON0 RJ45
MON1 RJ45
EXT-ALM0 RJ45
EXT-ALM1 RJ45
BBU Module --- UEIU Board
Port : The UEIU has four ports.
Board number: maximum is 1
The UEIU Functions
Connecting to an external monitoring device and transmitting RS485
signals to the WMPT
Connecting to an external alarm device and transmitting dry contact alarm
signals to the WMPT
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BBU Module UELP Board
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UELP: The universal E1/T1 lightning protection (UELP) unit is a universal E1/T1
The UELP can be optionally installed in the SLPU or the BBU. Each UELP
supports the surge protection of 4-way E1/T1 signals.
BBU Module --- UELP Board
E1 Connection:
DB25 DB26
Indoor DDF
E1
E1
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BBU M d l UFLP B d
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UFLP: The universal FE lightning protection (UFLP) board is optionally installed in the
SLPU or BBU. Each UFLP supports 2-way FE surge protection.
BBU Module --- UFLP Board
IP Cable Connection.
Transmission Equipment
LAN switch or Router
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Chapter2 Hardware IntroductionChapter2 Hardware Introduction
Section1 BBU HardwareSection1 BBU Hardware
Section2Section2 RRU HardwareRRU Hardware
Section3 DBS3900 CablesSection3 DBS3900 Cables
Section4 Antenna and Feeder SubsystemSection4 Antenna and Feeder Subsystem
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Logical Structure of the RRU/SRXU
Interfacemodule
MTRX
Powermodule
D
uplexer
Extensioninterface
TX signaling
Processing
unit
SRXU
RX signaling
Processing
unit
LNA
PA
LNA
RX signaling
Processingunit
BBU
LNA
LNA
RRU TX1
RX1
RX2
RX3
RX4
Antenna system
Antenna system
CPRI
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Panel and Port of RRU3804/3801E
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Panel and Port of RRU3804/3801E
Interconnection port
between combined
cabinets
Port for RET antenna
/Power output to the
SRXUMain TX/RX diversity
port
Port for RX
diversity
CPRI Optical ports
Indicators
Power supply
ports
Grounding bol t
Alarm
port
Panel of the RRU3804Panel of the RRU3804Panel of the RRU3804
Ports of the RRU3804Ports of the RRU3804
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LEDs on RRU3804/RRU3801E--II
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Label Color Status Description
ON VSWR-related alarms are reported
OFF No VSWP-related alarm is reported
ON (green) The CPRI link is normal
ON (red) The optical module receives local alarms related to LOS
0.5s ON, 0.5s OFF
(red)
The CPRI is out of lock
OFF The optical module is not in position or is powered offON (green) The CPRI link is normal
ON (red) The optical module receives local alarms related to LOS
0.5s ON, 0.5s OFF
(red)
The CPRI is out of lock
OFF The optical module is not in position or is powered off
CPRI_E Red/gr
een
CPRI_W Red/gr
een
VSWR Red
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Appearance and Specification of SRXU
Item SRXU
Dimension
with the
housing
SRXU
270mm(W) x 60mm(D) x 480mm(H)
The weight of the SRXU :6KG
Power input -48V
DC
Allowed voltage range -36 V DC to -57 V DC
maximum
power
consumption
30W
Weight
Appearance of the SRXUAppearance of the SRXUAppearance of the SRXU
Panels and Ports of the SRXU
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Interconnection port
between combinedcabinets
Socket for power supply
Power Input From RRU
Port for RET antenna
Port for RX diversity
Port for RX diversity
CPRI Optical ports
Grounding bolt
Indicators
Panel of the SRXUPanel of the SRXUPanel of the SRXU
Ports of the SRXUPorts of the SRXU
RRU Configurations
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RRU Configurations
The RRU is divided into two types according to output power and carries: 40 W RRU3801E, 40W output power on the top of cabinet
60 W RRU3804, 60W output power on the top of cabinet
RRU typeFrequency
band Receiving Band Transmitting Band Carriers
RRU3804 UMTS2100 1920MHz1980MHz 2110MHz2170MHz 4
RRU3801E UMTS2100 1920MHz1980MHz 2110MHz2170MHz 2
RRU3804 UMTS1900 1850MHz
1910MHz 1930MHz
1990MHz 4
RRU3801E UMTS1900 1850MHz1910MHz 1930MHz1990MHz 2
RRU3804 UMTS1.7/2.1G 1710MHz1755 MHz 2110 MHz2155 MHz 4
RRU3804 UMTS850 824MHz849MHz 869MHz894MHz 4
RRU3801E UMTS850 824MHz849MHz 869MHz894MHz 2
RRU3801C UMTS1800 1710MHz1785MHz 1805MHz1880MHz 2
RRU3801C UMTS900 880MHz915 MHz 925MHz960MHz 2
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Connections of the BBU3900 Cables
C bl P C bl f th BBU3900
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Cables --- Power Cable of the BBU3900
This describes the power cable. Either -48 V power cable or +24 V power cable
can be used, depending on the power input.
Appearance : The power cable has a 3V3 connector at one end and bare wires
at the other end. Appropriate terminals are added to the bare end on site.
1) 3V3 connecter 2) OT terminals
Cables --- Transmission Cable of BBU3900
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Cables Transmission Cable of BBU3900
E1 Cable
FE Surge Protection Transfer CableE1 Surge Protection Transfer Cable
FE Cable
Cables --- Power Cable of the RRU3804
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Cab es o e Cab e o t e U380
The RRU uses a shielded -48 V DC power cable. The cable feeds
external -48 V DC power to the RRU.
Appearance : The cable has two OT terminals at one end and bare
wire at the other end, The OT terminals need to be added on site.
Installation Position
Cables Power Cable of the SRXU
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Cables --- Power Cable of the SRXU
The SRXU uses a shielded DC power cable. The cable feeds power
from the RRU to the SRXU.
Appearance : The cable has a waterproof DB9 connector at each end
Installation Position: One end of the DC power cable is connected to
the RET/PWR_SRXU port at the bottom of the RRU, and the other
end is connected to the PWR_SRXU socket at the bottom of the SRXU.
Cables --- Optical Cable of RRU3804/SRXU
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BBU3900
1) DLC connector 2) Label on the fiber tail 3) Fiber tail
BBU3900-RRU3804/SRXU CPRI Optical Cable
The CPRI optical cable transmits CPRI signals:
between BBU3900 and RRU3801E
between BBU3900 and RRU3804 between RRU3804 and SRXU
The CPRI optical cable is a multi-mode 2-wire
cable with DLC connectors at both ends
BBU and RRU CPRI hardware connection is
same between RRU3801E and RRU3804
AISG Multi-Wire Cables of RRU3804/SRXU
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The five-meter-long AISG multi-wire cable connects the RRU3804/SRXUto the Remote Control Unit (RCU). If both RRU3804 and SRXU are installed,
the AISG multi-wire cable only connects the SRXU and the RCU. This
cable is optional
One end of the AISG multi-wire cable is a waterproof DB9 connector, and
the other end is a standard AISG female connector
AISG Extension Cable of the RRU3804/SRXUOptional
Cables
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When the distance between the RCU and the RRU3804/SRXU is longerthan 5 m, the AISG multi-wire cable is not long enough to cover the
distance and the AISG extension cable is used. The AISG extension cable
is 15 m long
One end of the AISG extension cable is a standard AISG male connector,
and the other end is a standard AISG female connector
RF Jumper of the RRU3804/SRXU
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Waterproofed Joints
The RF jumper of the RRU3804/SRXU is of two types
Antenna jumper: transmits and receives RF signals. Both
ends of the antenna jumper have DIN connectors
Interconnect jumper: transmits RF signals between
two RRU3804s/SRXUs.
The interconnect jumper is optional, depending on the
site configuration. The interconnect jumper is 2 m
long, and both ends have 2W2 connectors
The 2W2 connectors at the two ends of the
interconnect jumper are linked to the ports labeled
RX_IN/OUT on two RRU3804s/SRXUs respectively
RF Jumper Connections of the RRU
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Cable Connections of one RRU3804
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BBU3900
Cable Connections of one RRU3804 /SRXU
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BBU3900
Cable Connections of Multiple RRU3804s
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Optical cable
Power cableBBU3900
Cable Connections of Multiple RRU3804s/SRXUs
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Cable Connections of Multiple RRU3804s/SRXUs
Optical cablePower cable
Power cable
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Chapter2 Hardware IntroductionChapter2 Hardware Introduction
Section1 BBU HardwareSection1 BBU Hardware
Section2Section2 RRU HardwareRRU Hardware
Section3 DBS3900 CablesSection3 DBS3900 Cables
Section4 Antenna and Feeder SubsystemSection4 Antenna and Feeder Subsystem
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Typical Architectures of Antenna System
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(1) Lightning rod (2) Pole (3) TMA
(4) Directional
antenna
(5)
Waterproof
curve
(6) Feeder
grounding clip
(7) Feeder (8) Outdoor
cable rack
(9) Feeder
window
(10) Outdoor
grounding bar
(11) Tower
groundingconductor
(12) Cable tie
(13) Guard rail
Scenario2:BBU and RRU indoor
+ Tower Station
Typical Architectures of Antenna System
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Scenario3:RRU Closed to the Antenna
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Chapter1 General DescriptionChapter1 General Description
Chapter2 Hardware IntroductionChapter2 Hardware Introduction
Chapter3 Networking and ConfigurationChapter3 Networking and Configuration
BBU Networking
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BBUs and RNC can form multiple
networking modes such as star, chain,
tree, and hybridBBU BBUBBU
Chain Networking mode
StarNetworking mode
BBU
BBU
BBURNC
BBURNC
BBU
BBU
BBU
Tree Networking mode
For both chain and tree networking modes
cascading levels is less than 5
RRU Networking
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BBUs and RRUs can form multiple networking modes such as star,chain, tree, ring, and hybrid
For both chain and tree networking modes:
When using the 1.25 G optical module, cascading levels 4
When using the 2.5 G optical module, cascading levels 8
Typical Configuration1 1
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Typical Configuration 11
Applied to wide areas and indoor circumstancesApplied to wide areas and indoor circumstances
BBU3900
RRU
Typical Configuration2 1
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Typical Configuration 21Applied to long stretched areasApplied to long stretched areas
BBU3900
RRU
Typical Configuration31/32
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yp ca Co gu a o 3 /3
Applied to cities or other high capacity areasApplied to cities or other high capacity areas
BBU3900
RRU
RRU
RRU
High capacity areascities
Typical Configuration
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yp g
configuration Number of
WBBPs
Number of RRU3804s (No
TX Diversity)
Number of RRU3801Es
(No TX Diversity)
3 x 1 1 3 3
3 x 2 2 3 3
3 x 3 3 3 6
3 x 4 4 3 6
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