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Internal
WCDMA BTS3900
Hardware Structure
BTS3900V200R010
WRAN Training Team
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As an important part of UTRAN,
NodeB mainly processes the signals of
physical layer of Uu interface
BTS3900 is a new generation indoor
marco NodeB which is produced by
Huawei Co. Ltd.
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Upon completion of this course, you will be able to:
Master the hardware structure of BTS3900
Master the working principle of different subsystems and
boards of BTS3900
Master the cables connection rules of BTS3900
Know typical configurations of BTS3900
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BTS3900 Product Description
BTS3900 Hardware Description
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Chapter 1 NodeB Overview
Chapter 2 BTS3900 Hardware Structure
Chapter 3 BTS3900 Typical Configuration
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Abbreviations
WMPT WCDMA Main Processing and Transmission Unit
WBBPa WCDMA Baseband Process unit Type A
WRFU WCDMA Radio Filter Unit
UBFA Universal BBU Fan Unit Type A
UEIU Universal Environment Interface unit
UELP Universal E1/T1 Lighting Protection unit
UFLP Universal FE/GE Lighting Protection unitUPEU Universal Power and Environment Interface Unit
UAEU Universal ATM over E1/T1 Interface and Processing Unit
UIEU Universal IP Packet over E1/T1 Interface and Processing Unit
UTRP Universal Transmission Processing Unit
DCDU-01 Direct Current Distribution Unit-01
CPRI Common Protocol Radio Interface
PSU The power supply unit
PMU The power and environment monitoring unit
APM Advanced Power Module
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NodeB Position in UMTS Network
Iu-BC
RNC
RNC
NodeB
NodeB
NodeB
CS
PS
CBC
UE UTRAN CN
Uu IuIu-CS
Iu-PS
Iu-BC
Iur
Iub
Iub
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NodeB System Architecture
Environment
Monitoring
device
Iub
Uu
UE
RNC
BTS3900 cabinet
O&M terminal
BTS3900 System
power supply
system
GPS antenna & feeder system
Clock synchronization source
Internal Clock
Antenna & feeder
subsystem
Transmission
deviceDDF
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Chapter 1 NodeB Overview
Chapter 2 BTS3900 Hardware Structure
Chapter 3 BTS3900 Typical Configuration
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Chapter 2 BTS3900 Hardware Structure
Section 1 BTS3900 Introduction
Section 2 BBU Modules Structure
Section 3 RF Modules Structure
Section 4 Power Modules Structure
Section 5 BTS3900 Cables
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BTS3900 Appearance
Type Parameters
Dimensions 600(W)*900(H)*450(D)
Empty cabinet 70kg
Weight under full
configuration
160Kg
3*1 and 3*2 Weight 120Kg
- 48V : Input range ofvoltage
-38.4V DC to -57V DC
+24V: Input range ofvoltage
+21.6 V DC to +29 V DC
200 V AC to 240 V AC 200 V AC to 240 V AC 176 V AC to
290 V AC, single-phase
200 V AC/346 V AC to240 V AC/415V AC
176 V AC/304 V AC to 290 V AC/500V AC, three-phase
Working Temperature -20+50
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BTS3900 Single Cabinet Full Configuration Structure
+ 24VDC
Single Cabinet
220V AC
Single Cabinet- 48VDC
Single Cabinet
1U
9U
2U
1U
1U
19U
2U
2U
1U
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BTS3900 Stacked Cabinets Full Configuration Structure
3U
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BTS3900 Capacity and Characteristics
System capacity specifications:
BTS3900 can support up to: uplink 1536 CEs and downlink 1536 CEs
BTS3900 can support up to: 3*8 cells or 6*4 cells
Characteristics
Transmission Type: E1/T1, FE (electrical port ), FE (optical port ),
Networking mode: star, chain, tree, ring and hybrid
Synchronization clock sources: Iub interface clock, GPS, and internal clock
Handover types: softer handover, soft handover and hard handover
Services: CS services, PS services , mixed services and position services
Enhanced functionsRET , HSDPA , HSUPA phase II
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BTS3900 Logical Structure
PSU
RF Module
DCDU
WRFU
RNC
Antenna
Iub
WRFU
BBU
Power
Module
Baseband Transmission
Control module
+24V/220V -48V
Signal Current
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Chapter 2 BTS3900 Hardware Structure
Section 1 BTS3900 Introduction
Section 2 BBU Modules Structure
Section 3 RF Modules Structure
Section 4 Power Modules Structure
Section 5 BTS3900 Cables
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Logical Structure of the BBU3900 Module
TO WRFU
Clock modeSignaling
Processing
Operation&
MaintenancePower mode
E1/T1
FE
Transport
Interface
Transmission
Adaptation
Protocol
Processing
FPProcessing
Codling
Decoding Demodulation
Modulation
Interface
Module
Transport Subsystem Baseband Subsystem
Control Subsystem
External SubsystemOMC
CPRI
RNC
Power
Control
information
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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
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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 definition
only for UTRP board
B
FA
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 available
UTRP available available available available available available
WBBP available available available available available available
UELP available available
UFLP available available
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BBU Module --- WMPT Board
Board number
maximum is 2 for one BBU
mandatory board
working in active andstandby
4E1:DB26
IP transmission on
Electrical Port :RJ45
IP transmissionOptical 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
RUN Green 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.
ALM Red ON The board is reporting hardware alarms.OFF The board is running properly.
ACT Green ON The board is in active mode.OFF The board is in standby mode.
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BBU Module --- WMPT Board
LED Color Status Description
LEDs beside the
FE1 and FE0 optical
portGreen ON The connections are functional.
OFF The connections are faulty.
Yellow Blinking There is ongoing data transmission.
OFF There is no data transmission.
LEDs beside the
ETH port Green ON The connections are functional.OFF The connections are faulty.
Yellow Blinking There is ongoing data transmission.
OFF There is no data transmission.
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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
Balanced Mode
75-ohm E1
Unbalanced Mode
1 ON OFF ON
2 ON OFF ON
3 OFF ON ON
4 OFF ON ON
Settings of SW2
Bit 120-ohm E1
Balanced Mode
75-ohm E1
Unbalance
d Mode
Description
1 OFF ON The RRING is for
connected to the
protection ground2 OFF ON
3 OFF ON
4 OFF ON
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BBU Module --- WBBPa Board
Board number mandatory board, 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
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BBU Module --- WBBPa Board
LED of running status of board :
Label Color Status Description
RUN Green 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.
ACT Green ON The board is running properly.OFF The board is not in use.
ALM Red OFF The board is running properly.ON The board has alarms on hardware and it should be replaced with a new one.
CPRI0
CPRI1
CPRI2Red
Green
OFF normal
ON The CPRI links over the optical cable are faulty.
Blinking at 2 Hz The RRU on the CPRI link is faulty in hardware.
Blinking at 0.5 Hz The RRU on the CPRI link is faulty in the antenna system connection.
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BBU Module --- WBBP Board
There are 2 kinds of Baseband card, WBBPa and WBBPb.
The WBBPa support HSDPA (2 ms TTI) and support for HSUPA phase I (10 ms TTI).
The WBBPb support HSDPA (2 ms TTI), and support for HSUPA phase II (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
STATE
Green
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.
BBU Module --- UBFA Board
Board number mandatory board, maximum is 1
Main Functions
Controlling the fan speed
Reporting the fan status to the WMPT
Detecting the temperature of the fan 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
RUN Green ON The board is running properly.
OFF The board has no power input, or
the board is faulty.
Socket and Port: The UPEU has one socket and four ports.
Label Quantity Connector Type Function
PWR 1 3V3 DC power input
EXT-ALM1
1
RJ45
Transmitting dry contact alarm signals
EXT-ALM0 1 RJ45
MON1 1 RJ45 Transmitting RS485 environment
monitoring signalsMON0 1 RJ45
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
RUN Green 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.
ACT Green ON The board is in active mode.
OFF The board is in standby mode.
ALM Red OFF The board is running properly.
ON The board is reporting alarms and is faulty.
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 currently.TransmissionBoard name
Sub board
name
Interface type Interface specification
WD22UEEU WD22UEEC FE/GE electrical board 2*FE/GE (10/100/1000M
adaptive)
WD22UEOU WD22UEOC FE/GE optical board 2*FE/GE (10/100/1000M
configurated)
WD22UAEU WD22UAEC E1/T1 ATM interface sub board 8* E1/T1WD22UIEU WD22UPEC E1/T1 IP interface sub board 8*E1/T1
WD22UCPU WD22UCPS Channelization IP optical sub board 1*STM-1
WD22UUPU WD22UUPS Unchanneliazation IP optical sub board 1*STM-1
WD22UCAU WD22UCAS 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 --- SLPU Board
The auxiliary devices of the
BBU3900. The devices are
the SLPU, UELP, and UFLP
SLPU:The signal lightning
protection unit is an optionalmodule of the BTS3900
cabinet (-48 V) or the power
distribution cabinet.
The UFLP and the UELPare optional units that are
installed in the SLPU.
UFLP
UELP
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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.
E1 Connection:
BBU Module --- UELP Board
DB25 DB26
Indoor DDF
E1
E1
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DIP Switch: The UELP has one DIP switch, which is used to select whether the
receive terminal is grounded. The DIP switch has four bits.
DIP
Switch
DIP Status Description
1 2 3 4
S1 ON ON ON ON Used for the 75
unbalanced modeOFF OFF OFF OFF Used for other
modes except the 75
unbalanced mode
BBU Module --- UELP Board
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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
IPCable Connection.
Transmission Equipment
LAN switch or Router
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Chapter 2 BTS3900 Hardware Structure
Section 1 BTS3900 Introduction
Section 2 BBU Modules Structure
Section 3 RF Modules Structure
Section 4 Power Modules Structure
Section 5 BTS3900 Cables
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RF Module --- WRFU Board
The WRFU consists of the high-speed interface unit, signal processing unit,
power amplifier, and duplex unit
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RF Module --- WRFU Board
Type Label Connector Type DescriptionPort for
transceiving RF
signals
ANT-RXB DID connector Connecting the antenna
subsystem
ANT-TX/RXA DID connector
CPRI CPRI0 SFP female
connector
Connecting the BBU, or
the upper-level WRFU
during the cascading
CPRI1 SFP female
connector
Connecting the lower-
level WRFU during the
cascading
Interconnection port
for RF receive
signals
RX-INB QMA female
connector
Input port of diversity
signals in the antenna
channel
RX-OUTA QMA female
connector
Output port of diversity
signals in the antenna
channel
Power port PWR 3V3 power
connector
Introducing power
Commissioning port MON RJ45 connector Used for commissioning
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Identifier Status Meaning
RUN On The power input is normal, but the module is faulty.
Off There is no power input, or the module is faulty.
On for 1 second and off for 1 second The module is functional.
On for 0.125 second and off for 0.125
second
The module is loading software or is not started.
ALM On The module is in the alarm status.
Off No alarm is generated.
ACT On The module is functional and is connected to the BBU.
Off The module is not connected to the BBU.
On for 1 second and off for 1 second The module is in the local test status.
VSWR Off (red) No VSWR alarm is generated.
On (red) A VSWR alarm is generated.
CPRI0
CPRI1
On (green) The CPRI link is normal.
On (red) The interface module fails to receive signals.
Red LED on for 1 second and off for
1 second
The CPRI link is out of lock.
RF Module --- WRFU Board
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RF Module --- WRFU Board
RF specifications:
One WRFU supports four carriers
Each carriers maximum output power of WRFU is 80W
The receive sensitivity of single antenna is better than -125.8dBm
The receive sensitivity of two antennas is better than -128.6dBm
The maximum searching ability is 200km
The maximum access search radius is configurable with the step size of 300 m
Configuration Type (No
Transmit Diversity)
Transmit Diversity
Power (W)/Carrier
Typical Power
Consumption (W)
Maximum Power
Consumption (W)
3*1 20 520 630
3*2 20 610 830
3*3 20 810 1070
3*4 20 1020 1330
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Chapter 2 BTS3900 Hardware Structure
Section 1 BTS3900 Introduction
Section 2 BBU Modules Structure
Section 3 RF Modules Structure
Section 4 Power Modules Structure
Section 5 BTS3900 Cables
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Power Distribution Modes of the BTS3900
- 48 V DC Distribution
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- 48V Cabinet Power Module --- DCDU-01 Board
Function
The DCDU-01 supports one -48 V
DC power input and ten -48 V DC
power outputs
The DCDU-01 supplies power to
the BBU, WRFU, FAN, and user
devices inside cabinets
The DCDU-01 has the built-in
surge protector, which supports
the surge protection capability of
the differential mode of 10 kA and
the common mode of 15 kA
- 48V DC
Single Cabinet
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- 48V Cabinet Power Module --- DCDU-01 Board
Name Label Description
Power input
wiring terminal
NEG(-) -48 V NEG input wiring terminal
RTN(+) -48 V RTN input wiring terminal
Power output port SPARE2, SPARE1,
BBU, FAN, and RFU5-
RFU0
RFU0 to RFU5 supplying power to six WRFUs
BBU supplying power to the BBU
FAN supplying power to the FAN
SPARE1 and SPARE2 reserved
Power switch SPARE2, SPARE1,
BBU, FAN, and RFU5-
RFU0
RFU0 to RFU5 controlling the ON/OFF of the current of
six WRFUs
BBU controlling the ON/OFF of the current of the BBU
FAN controlling the ON/OFF of the current of the FAN
SPARE1 and SPARE2 controlling the ON/OF of the
current on the SPARE1 and SPARE2 power output ports
Alarm output port SPD ALM DUDU-01 dry contact alarm output port
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FAN Unit
The FAN unit refers to the fan box. The FAN unit provides the functions of ventilation
and heat dissipation for cabinets. One FAN unit has four independent fans.
Type Label Connector Type Description
Power port -48 V 3V3 power connector Introducing the -48 V
DC power
Temperature sensor port SENSOR RJ45 connector Connecting the
external temperature
sensor
Communication port COM OUT RJ45 connector Cascading the lower-
level FAN module
COM IN RJ45 connector Connecting the main
control unit
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Chapter 2 BTS3900 Hardware Structure
Section 1 BTS3900 Introduction
Section 2 BBU Modules Structure
Section 3 RF Modules Structure
Section 4 Power Modules Structure
Section 5 BTS3900 Cables
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BBU3900 Cable Connection
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Cables --- PGND Cable
PGND Cable
OT terminal
Name Color Cross-Sectional Area
PGND cable of the
BTS3900 WCDMA cabinet
Green and yellow The cross-sectional area of a wire is 25
mm2.
PGND cable of the DCDU Green and yellow The cross-sectional area of a wire is 6
mm2.
PGND cable for the SLPU Green and yellow The cross-sectional area of a wire is 6
mm2.
Front door PGND cable Green and yellow The cross-sectional area of a wire is 6
mm2.
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Cables --- Power Cable
Power Cable Between the DCDU,BBU,FAN and WRFU
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Cables --- Transmission Cable
E1 Cable
FE Surge Protection Transfer CableE1 Surge Protection Transfer Cable
FE Cable
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Cables --- CPRI Cable
This describes the CPRI electrical cable. It helps to implement high speed
communication between the BBU3900 and the WRFU.
Appearance : The CPRI electrical cable is an SFP high speed transmission
cable that has a SFP200 male connector at each end.
One End The Other End
CPRI port on the WBBP CPR10 port on the WRFU
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Chapter 1 NodeB Overview
Chapter 2 BTS3900 Hardware Structure
Chapter 3 BTS3900 Typical Configuration
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Configuration Types of the BTS3900
The BTS3900 supports omni-directional, 2-sector, 3-sector, and 6-sector
configurations. It also supports smooth capacity expansion from 1x1 to 3x8.
This part illustrates the configuration type of the BTS3900 by taking the WBBPa
supporting three cells and the WRFU supporting the 80W/4 carrier as an example.
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