1. oeb006910 e nodeb lte v100r008c10 product description issue 1.00

eNodeB LTE V100R008C10 ProductDescription
Confidential Information of Huawei. No Spreading WithoutPermission
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 Functions of NEs
 eNodeB
 Radioresource management, including radio bearer control, radio admission
control, connection mobility control, and scheduling
 Packet compression and ciphering
 Routing of userplane data towards an S-GW
 MME selection
 Scheduling and transmission of broadcast information and paging messages
 Measurement and measurement reporting configuration
 MME
 Paging message distribution
 Security control
 Mobility management in idle mode
 SAEbearer control
 Ciphering and integrity protection of Non-Access Stratum (NAS)signaling
 S-GW
 Termination of user plane packets that are generated for paging reason
 Support for userplane handovers causedby UEmobility
eNodeB LTE V100R008C10 ProductDescription P-3

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 Thesebasestations can be classified into single- and multi-mode basestations according to
provided services.
A single-mode basestation (GBTS,NodeB, or eNodeB) can provide servicesfor only one
mode (GSM,UMTS,or LTE), respectively.
A multi-mode base station (MBTS)can provide servicesof multiple modes. MBTSsare
classified into dual-mode and triple-mode base stations according to provided services.
 A dual-mode base station, providing servicesof two modes, can work in GSMand
UMTS(GU),GSMand LTE(GL),or UMTSand LTE(UL) mode.
 A triple-mode base station, providing servicesof three modes, can work in GSM, UMTS
and LTE(GUL)mode.
 There is only distributed base station for TDDmodecurrently.

 eNodeBs are designed based on a distributed architecture. EacheNodeB consists of two basic
types of component: baseband unit BBU3900 and Radio Frequency (RF)unit.
 Logical structure of an eNodeB is as following
 AAU: active antenna unit, TheAAU incorporates the functions of radio frequency (RF)
modules and antenna systems
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 TheBBUis a baseband processing unit and centrally managesthe entire base station.
 TheBBUprovides the following functions:
 Manages the entire base station systemin terms of operation, maintenance, signaling
processing, and system clock.
 Processesuplink and downlink data, and provides common public radio interfaces
(CPRIs)for the communication between the BBUand RFmodules.
 Provides physical ports for information exchange between the base station and the
transport network.
 Provides an OM channel between the base station and the operation and maintenance
center (OMC).
 Provides ports for receiving and transmitting signals from environment monitoring
devices.
 BBUsare classified into two types: BBU3900 and BBU3910. With acasestructure, BBUscan
house different types of boards and modules.
 Compared with BBU3900, BBU3910 strengthened the back board exchange capacity: the
swap bandwidth between every two intercommunication trough positions approximately of
BBU3910 is BBU3900’s two times .

 LMPT/UMPT
TheLTEMain Processing and Transmission Unit (LMPT)or the Universal Main Processing and
Transmission Unit (UMPT)is the main control and transmission unit of the BBU3900 (BBU3910).
It manages the entire eNodeB in terms of OM and signaling processing and provides clock
signals for the BBU3900 (BBU3910).
TheUMPTis classified into five types: UMPTa1 to support UMTS.UMPTa2, UMPTa6 and
UMPTb2 to support LTE.UMPTb1 to support GSM,UMTS,LTE.
 LBBP/UBBP
The LTEBaseband Processing Unit (LBBP) or universal baseband processing unit (UBBP) is the
baseband processing unit of the BBU3900(BBU3910). It processes baseband signals and CPRI
signals.
 FAN
TheFANmodule controls the fan speed and monitors the temperature of the module. It
dissipates heat for boards and modules of the BBU3900(BBU3910).
 UPEU
TheUniversal Power and Environment interface Unit (UPEU)is the power module of the BBU.It
converts +24 VDCor -48 VDCpower into the power required for boards and modules of the
BBU3900(BBU3910) and provides ports for transmission of external monitoring signals and
eight dry contact signals.
 UTRP
Universal transmission processing unit expands transmissioncapabilities.

 Control Subsystem: Thefunctions of the control subsystem are implemented by the
LMPT/UMPT. This subsystem performs OM functions, processessignaling, and provides
the systemclock. It manages the entire eNodeB
 TheOM functions include configuration management, fault management,
performance management, security management, and deployment.
 The signaling involves Packet Data Convergence Protocol (PDCP) signaling on the
Uu interface and Stream Control Transmission Protocol (SCTP) signaling on the S1
and X2 interfaces.
 Thesystem clock can be one of the following types: Global Positioning System
(GPS),IEEE1588V2, synchronous Ethernet, or Clock over IP
 Transport Subsystem: Thefunctions of the transport subsystem are implemented by the
LMPT/UMPT and UTRP
 Provides ports for communication between the eNodeB and the EPC
 Provides the OM channel between the eNodeB and the Local Maintenance
Terminal (LMT)or U2000
 Provides ports for communication between the eNodeB and 2G/3Gbase stations
so that the E1/T1transmission resources can be shared by the eNodeB and the
2G/3Gbase stations

 BasebandSubsystem: Thefunctions of the baseband subsystem are implemented by the
LBBP/UBBP.Thebaseband subsystem performs the functions for the user plane of the Uu
interface, including uplink and downlink scheduling and data processing. In addition, this
subsystem provides the Common Public Radio Interface (CPRI)for communication
between the BBU3900 and Radio Frequency (RF) units
 According to the indication of uplink scheduling result, the uplink processing
module receives data over uplink channels, demodulates and decodes the data,
assembles the data into packets, and then transmits the data to the MME or S-
GWthrough the transport subsystem.In addition, the module performs
measurementson uplink channels.
 According to the indication of downlink scheduling result, the downlink
processing module assembles the data received from the transport subsystem into
packets, encodes and modulates the data, performs Multiple Input Multiple
Output (MIMO) and Orthogonal Frequency Division Multiplex (OFDM)processing,
and then transmits the signals over the CPRIinterface.
 TheCPRIinterface is used for transmission of data between the BBUand RFunits
 Power and Environment Monitoring Subsystem:The functions of the power and
environment monitoring subsystem are implemented by the UPEUand environment
monitoring unit
 Supplies power to the BBU.
 Monitors the power status of theBBU.
 Provides ports for connections to the environment monitoring unit andreceives
and forwards the signals from the environment monitoringunit

 System Reliability
 Cold redundancy of main control boards In a BBU3900, two LMPT(or two UMPT)
boards are configured and work in active/standby mode. If the active LMPT(or
UMPT) board experiences a major fault, an active/standby switchover is
automatically performed. An active/standby switchover can also be performed if a
user runs the switchover command.
 Operation and maintenance (O&M) channel backup TheU2000 detects channel
connectivity by employing the handshake mechanism at the application layer. If
detecting that the active channel is disconnected, the U2000 instructs the eNodeB
through the standby channel to perform a channel switchover. TheeNodeB
automatically switches from the route for the active channel to the route for the
standby channel.
 Route backup Route backup enhances transmission reliability by using apair of
primary and secondary routes to the samedestination. Theroutes are prioritized:
A higher priority is set for the primary route, and a lower priority for the
secondaryroute.

 Ports on the LMPT
 Indicators on the LMPT
Indicator Color Status Description
SFP0
and
SFP
1
Gree
n
(LINK
)
ON Theconnection is successful.
OFF There is no connection.
Orang
e
(ACT)
ON Theport is receiving or transmitting signals.
OFF Theport does not receive or transmit signals.
ETH,
FE/GE
0,
FE/GE
1
Gree
n
(LINK
)
ON Theconnection is successful.
OFF There is no connection.
Yello
w
(ACT)
ON Theport is receiving or transmitting signals.
OFF Theport does not receive or transmit signals.
RUN Green
ON There is power supply, but the board is faulty.
OFF There is no power supply, or the board is faulty.
ONfor 1sand OFFfor 1s Theboard works properly.
ONfor 0.125s and OFF
for 0.125s
Software is being loaded to the board.
ALM Red
ON Theboard is reporting alarms.
OFF No alarm is generated.
ACT Green
ON Theboard is in active mode.
OFF Theboard is in standby mode.
Silkscreen
Connector
Type
Quantity Function
SFP0 and SFP1 SFP 2
Ethernet optical port, used for connecting
Transmission equipment or gateway Equipment
USB USB 1 Used for loading software to the board.
TST USB 1 Used for testing.
ETH RJ-45 1 Used for local commissioning.
FE/GE0andFE/GE1 RJ-45 2
Ethernet electrical port, used for connecting
Transmission equipment or gateway Equipment
GPS SMA 1 Used for receiving GPSsignals.
RST - 1 Used for resetting the board.

 ATM over E1/T1is supported only in UMTS mode.

 Ports on the UMPT
Silkscreen
Connect
o r
Type
Qua
n
tity
Function
FE/GE1
(optical port)
SFP 1
A 100 Mbit/s or 1000 Mbit/s adaptive Ethernet optical port is used
for transmitting service data and signalingmessages.
FE/GE0
(electrical port)
RJ-45 1
A 10 Mbit/s, 100 Mbit/s, or 1000 Mbit/s adaptive Ethernet
electrical port is usedfor transmitting service data and signaling
messages.
USB(1)(2) USB 2
(1)TheUSBport with the USBsilkscreenis usedfor the software
upgrade of abasestation using aUniversal Serial Bus(USB)
storage device. Thisport also functions asacommissioning
Ethernet port.
(2)TheUSBport with the CLKsilkscreenis usedfor multiplexing
TODand testclock.
E1/T1 port
DB26
female
1
The port is used for four E1/T1 signal inputs and outputs between
the UMPT and the universal E1/T1 lightning protection unit (UELP)
or between basestation controllers.
GPS SMA 1
The GPS ports on the UMPTa1, UMPTa2, and UMPTb1 are reserved.
The GPS ports on the UMPTa6 and UMPTb2 are used for
transmitting radio frequency (RF) signals received from the antenna
to the satellite card.
CI SFP 1 Theport is usedfor BBUinterconnection.
RST - 1 Usedfor resetting the board.

 Indicators on the UMPT
RUN Green
SteadyON There is power supply, but the board is faulty.
SteadyOFF There is no power supply, or the board is faulty.
ONfor 1sand OFF
for 1s
Theboard works properly.
ONfor 0.125s and
OFFfor 0.125s
Theboard is being loaded or configured, the board is
not started, or the board is running properly.
ALM Red
Steady ON
An alarm is generated, and the board must be
replaced.
On for 1sand off
for 1s
An alarm is generated, and the alarm may be caused
by an associated board or port fault. Therefore, you
must locate the fault before replacing the board.
Steady OFF There is no fault.
ACT Green
Steady ON Theboard servesasan active board.
Steady OFF
Theboard is not activated, not configured, or is
manually blocked. Therefore it does not provide any
services..
On for 0.125s and
off for 0.125s
TheOML link is disconnected.
On for 1sand off
for 1s
Theboard is being tested, such asan RRUVoltage
Standing WaveRatio (VSWR)test through aUSBdisk.
When an upgrade through a USBdisk is implemented,
the ACTindicator does notblink.
In every 4s, the
indicator is on for
0.125s and off for
0.125s (eight
times)
in the first 2sand
then off for2s.
Theservice is not available, for example, the cell is not
available, the traffic link is not available, or a system
fault needs to be rectified onsite.
FE/GE
0,
FE/GE1
Gree
n
(LIN
K)
Steady ON Theconnection is normal.
Steady OFF Theconnection is abnormal.
Yello
w
(ACT
)
Blinking Data is being transmitted.
Steady OFF No data is being transmitted.

 Indicators on the UMPT
Indi
c
ator
Color Status Description
CI
Red/
Gree
n
Steady green Theinter-BBU transmission link is normal.
Steady red An optical module fails to receive signals becausethe optical
module is faulty or the fiber optic cable is broken.
Blinking red (on for 0.125s
and off for 0.125s)
•Cablesare connected in an incorrect manner. For example:
Theprimary ports are interconnected or the secondary ports
are interconnected. Theindicators of the interconnected
ports are blinking.
•Theports are connected in ring topology. Theindicators for
all connected ports are blinking.
Steady off TheSFPmodule is not installed, or the optical module is
powered off.
R0,
R1,
an
d
R2
Red/
Gree
n
- Reserved.It could be used as, R0 represents GSM and CDMA.
R1 represents UMTS, TD-SCDMA, or WiMAX. R2 represents
LTE.
L01 Red/
Gree
n
Steady off Link 0 or 1 is not set up, or an LOSalarm is generated.
Steady green Links 0 and 1 are set up and work properly.
Blinking green (on for 1s
and off for 1s)
Link 0 is functioning properly, but link 1 is not set up or an
LOSalarm is generated.
Blinking green (on for
0.125s and off for 0.125s)
Link 1 works properly, but link 0 is not set up or an LOS
alarm is generated.
Steady red Alarms are generated on both links 0 and 1.
Blinking red (on for 1sand
off for 1s)
An alarm is generated on link 0.
and off for 0.125s)
L23 Red/
Gree
n
Steady off Link 2 or 3 is not set up, or an LOSalarm is generated.
Steady green Links 2 and 3 are set up and work properly.
Blinking green (on for 1s
and off for 1s)
alarm is generated.
0.125s and off for 0.125s)
alarm is generated.
Steady red Alarms are generated on both links 2 and 3.
Blinking red (on for 1s and
off for 1s)
and off for 0.125s)

 Before accessing the basestation through the ETHport, ensure that an OM port has been
opened and the user has obtained required authorities for accessing the base station
through the OMport.
 Thesecurity of the USBport is ensured by encryption.
 TheTSTport is used for commissioning the base station rather than importing or
exporting the base station configuration.

 Indicators on the panel of the LBBP
RUN Green Steadyon Thereis power supply, but the board is faulty.
Steadyoff There is no power supply.
On for 1sand
off for 1s
Theboard is functioning properly according to the
configuration.
On for 0.125s
and off for
0.125s
Theboard is being loaded or configured, the board
is not started, or the board is running in asafety
version.
ALM Green Steadyon An alarm is generated, and the board must be
replaced.
On for 1sand
off for 1s
An alarm is generated, and the alarm may be
caused by another faulty board or port. Therefore,
you need to locate the fault before deciding
whether to replace the board.
Steadyoff There is no fault.
ACT Red Steadyoff Theboard servesasan active board.
Steadyon Theboard is in the non-active mode, not activated,
not configured, or is manually blocked. Therefore,it
does not provide any services.
On for 1sand
off for 1s
Thepower supply for the board is insufficient.
NOTE:only LBBPdhas this status.

 Indicators indicating the status of the SFPlinks
 Ports on the LBBP
 Indicator indicating the status of the QSFPlinks on the LBBPd
 QSFPport on theLBBPd
HEI Red/
Gree
n
Steadygreen Theinter-BBU transmission link is functional.
Steady red An optical module fails to receive signals becausethe
optical module is faulty or the optical cable is broken.
Blinkingred
(on for 1s
and off for
1s)
Theinterconnection link is out of lock becausethere is
mutual lock between the BBUcasesor mismatched data
rate over QSFPports.
You are advised to check the system configuration to
locate the fault.
Steady off TheQSFPmodule cannot be detected, or the optical
module is powered off.
Silkscreen Description
Connec
t or
Type
Qua
n
tity
Function
CPRI0to
CPRI5
CPRIport
SFP
female
6
Connecting to the RFmodules for
transmitting service data, clock signals, and
synchronization information
TXRX
Red/
Green
Steady green TheCPRIlink is functioning properly.
Steady red An optical module fails to receive signals
because the optical module is faulty or the
optical cable is broken.
Blinking red (on for
0.125s and off for
0.125s)
TheRFmodule connected to the CPRIlink
has ahardware fault.
Blinking red (on for 1s
and off for 1s)
TheCPRIlink is out of lock because there is
mutual lock between dual-mode clock
sources or mismatched data rate over CPRI
ports (you are advised to check the system
configuration to locate the fault), or under
the USBflash drive testing conditions, VSWR
alarms are reported on the RRUconnected
to the CPRIlink.
Steady off TheSFPmodule cannot be detected, or the
optical module is powered off.
Silkscreen Connector Quantity Description
HEI QSFP
connector
1 Port interconnected to other baseband boardsto
share the baseband resources.

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 Thefollowing table describes the six CPRIports and one HEIport on aUBBP.
 Indicators for the SFPports on the LBBPpanel
Silkscreen Connector
Quantity ofCPRI
Ports
Description
CPRI0 to CPRI5
SFP female
connector
6
They are the data transmission ports
connecting the BBU to RF modules, and
support the input and output of optical
and electrical transmission signals.
HEI QSFP connector 1 Reserved
Silkscreen Color Status Description
CPRIx
Red
or
green
Steady green The CPRI link is functioning properly.
Steady red
•An optical module fails to transmit or receive
signals due to one of the following causes: The
optical module is faulty.
•The fiber optic cable is broken.
and off for 0.125s)
The RF module connected to the CPRI link has a
hardware fault.
Blinking red (on for 1s and
off for 1s)
•The CPRI link is out of lock due to one of the
following causes: There is no mutual lock between
dual-mode reference clocks.
•The CPRI port rates do not match each other.
Steady off
•The optical module cannot be detected.
•The CPRI electrical cable is not connected.

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 Indicators on the FANmodule
STATE
Gree
n or
Red
0.125s and off for0.125s)
Themodule is not registered
and does not report alarms.
Blinking green (on for1s
and off for 1s)
Themodule works properly.
off for 1s)
Themodule is reporting alarms.
Steady off There is no power supply.

 Ports on the UPEU
 Specifications of the UPEU
 TheUPEUdcan be installed in a BBU3900 or BBU3910, but other types of UPEUcan only
be installed in a BBU3900.
Silkscreen
Connec
t or
Type
Function
+24 V/-48V
(UPEUa,UPEUb)
7W2
Introducing +24 Vor -48 VDCpower
+24V/-48 V
(UPEUc,UPEUd)
3V3 Introducing +24 Vor -48 VDCpower
EXT-ALM0 RJ-45 No.0 to 3 Boolean signal input ports
EXT-ALM1 RJ-45 No.4 to 7 Boolean signal input ports
MON0 RJ-45 Used to provide transmission of one RS485monitoring signal
MON1 RJ-45 Used to provide transmission of one RS485 monitoring signal
Board Output Power Backup Mode
UPEUa Theoutput power of aUPEUais 300 W. 1+1 backup
UPEUc Theoutput power of aUPEUcis 360 W, and
the output power of two UPEUcboards is
650 W.
In 1+1 backup mode, the
output power of twoUPEUc
boards is 360 W.
UPEUd Theoutput power of aUPEUdis 650 W. 1+1 backup

 Ports on the UEIU
Silkscreen Connector Type Function
EXT-ALM0 RJ-45 Port for Boolean inputs 0 to 3
EXT-ALM1 RJ-45 Port for Boolean inputs 4 to 7
MON0 RJ-45 Port for RS485input0
MON1 RJ-45 Port for RS485input1

 Ports on the USCU
 Indicators on the TODport
Port Connector Description
GPS SMA
connector
The GPS ports on the USCUb14 and USCUb22 are used for receiving GPS signals.
The GPS port on the USCUb11 is reserved, and it cannot receive GPS signals.
RGPS PCBwelded
wiring terminal
The RGPS port on the USCUb11 is used for receiving RGPS signals.
The RGPS ports on the USCUb14 and USCUb22 are reserved, and they cannot
receive RGPS signals.
TOD0 RJ45connector Receiving or transmitting 1PPS+TODsignals
TOD1 RJ45connector Receiving or transmitting 1PPS+TODsignals, and receiving TODsignals from
the M1000
BITS SMA
connector
Receiving BITSclock signals, supporting adaptive input of 2.048 MHz and 10
MHz clock reference source
M-1PPS SMA
connector
Receiving 1PPSsignals from the M1000
Color Description Default Configuration
Green If the indicator is steady on, the TOD
port is configured asan inputport.
Thegreen indicator of the TOD0port is off, and
the orange indicator of the TOD0port is on.
Oran
g e
If the indicator is steady on, the TOD
port is configured asan outputport.
Theorange indicator of the TOD1port is Off,
and the green indicator of the TOD1port is On.

 ThreeCPRIports on anLPMP:
 Indicators for the ports on anLPMP:
Silkscreen Connector CPRI Port Rate (Gbit/s) Remarks
CPRI0 toCPRI2
SFPfemale
connector
1.25, 2.5, or 4.9
Interconnection data transmission ports
connecting to RF modules, whichsupport
input and output of optical and electrical
transmissionsignals.
CPRIx
Red
or
green
Steady green The CPRI link is functioningproperly.
Steady red
An optical module fails to transmit or receive
signals due to one of the following causes:The
optical module is faulty.The fiber optic cableis
broken.
and off for 0.125s)
The RF module connectedto the CPRI link has a
hardware fault.
off for 1s)
The CPRI link is out of lock due to one ofthe
following causes: There is no mutual lock
between dual-mode referenceclocks.
The CPRI port rate does not match the rate of
the opticalmodule.
Steady off
The optical module cannot be detected.
The CPRI electrical cable is notconnected.

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 TheBBU3910A performs the following functions:
 Provides ports for connecting to the transmission equipment, RFmodules, USB
devicesa, external reference clock, and LMT or U2000 to provide signal
transmission, perform automatic software upgrade, receive reference clock, and
support BBUmaintenance on the LMTorU2000.
 Manages the entire base station system.Themanagement involves the processing
of uplink and downlink data, signaling processing, resource management, and
operation and maintenance.
 TheUMDU and BBU3910A work asawhole. Therefore, when a UMDU becomes faulty,
you need to replace the whole BBU3910A.

 Ports and indicators on BBU3910A panels
Item Silkscreen Connector Description
(1) Ports on
the cabling
cavity panel
HEI0 QSFP connector Reserved
HEI1 QSFP connector Reserved
CPRI0to
CPRI5
SFP connector Data transmission ports
connecting the BBU to RF
modules. They support theinput
and output of optical
transmissionsignals.
NEG(-) EPC4 connector Input port for -48 V DCpower
supplied to the BBU3910A
RTN(+)

 Ports and indicators on BBU3910A panels
Item Silkscreen Connector Description
(2) Ports on
the bottom
panel
GE0 RJ45 connector GE electrical signaltransmission
port
GE1 SFP connector GE optical signaltransmission
port
DBG USB connector Used for the softwareupgrade
of a base station using a USB
flash drive.
Used as a localmaintenance
port when connecting to a
WLAN adapter.
Port for clock signal outputs.The
clock signals are used fortesting.
RJ45 connector Commissioning port, which
connects to the LMT for
commissioning base stations
EXT_ALM DB15 female connector Port for monitoringenvironment
alarms
E1/T1 DB26 female connector E1/T1 signal transmissionport
GPS Type N female
connector
GPS port for transmittingRF
signals received from the
antenna to the satellitecard
(3)Indicators RUN
ALM
ACT
GE0, GE1
R0, R1, R2
L01, L23
HEI0,HEI1
CPRI0,
CPRI1,
CPRI2,
CPRI3,
CPRI4,
CPRI5
- For details, seeIndicators onthe
BBU3910A.

 Indicators on BBU3910A panels
RUN Green Steady on There is power supply.
Steady off There is no power supply.
The board is faulty.
Blinking (on for 1s and
off for 1s)
The board is runningproperly.
Blinking (on for 0.125s
and off for 0.125s)
The board is being loaded orconfigured.
The board is notstarted.
ALM Red Steady on An alarm is generated, and the boardneeds
to be replaced.
Steady off The board is runningproperly.
off for 1s)
An alarm is generated, and you need to
locate the fault before determiningwhether
to replace the board.
ACT Green Steady on The board is serving as an activeboard.
The board has been activated and is
providing services.
Steady off The board is not serving as an activeboard.
The board has not been activated or is not
providing any services.
and off for 0.125s)
The operation and maintenance link(OML)
is disconnected.
off for 1s)
The board is being tested, for example,
going through an RRU voltage standingwave
ratio (VSWR) test by using a USB flashdrive.
In every 4s, the
indicator is on for
0.125s and off for
0.125s (eight times)in
the first 2s and then
off for 2s.
Some cells configured for the subrackthat
houses this board are notactivated.
The S1 link is faulty.
GE0 Green Steady on The Ethernet link is functioningproperly.
Steady off The network cable is notconnected.
GE1 Red
or
green
Confident
i
Steady green The Ethernet link is functioningproperly.
Steady red The Ethernet fails to transmit orreceive
signals.
Steady off
al Information of Huawei. No
The SFP module cannot be detected, orthe
optical module is poweredoff.Spreading Without Permission

R0 Red
or
green
Steady off The board is not working in GSMmode.
Steady green The board is working in GSMmode.
Steady red Reserved
Both the red and green
indicators are steadyon.
Reserved
R1 Red
or
green
Steady off The board is not working in UMTSmode.
Steady green The board is working in UMTSmode.
Steady red Reserved
Both the red andgreen
Reserved
R2 Red
or
green
Steady off The board is not working in LTEmode.
Steady green The board is working in LTEmode.
Steady red Reserved
Both the red and green
Reserved
L01 Red or
green
Steady off Links 0 and 1 are not set up, or anLOS
alarm is generated.
Steady green Links 0 and 1 are functioningproperly.
Blinking green (onfor
1s and off for1s)
Link 0 is functioning properly, but link 1is
not set up or an LOS alarm isgenerated.
0.125s and off for
0.125s)
Steady red Alarms are generated on links 0 and1.
Blinking red (on for1s
and off for 1s)
An alarm is generated on link0.
0.125s and off for
0.125s)

L23 Red
or
green
Steady off Links 2 and 3 are not set up, or anLOS
alarm is generated.
Steady green Links 2 and 3 are functioningproperly.
1s and off for1s)
0.125s and off for
0.125s)
Steady red Alarms are generated on links 2 and3.
and off for 1s)
0.125s and off for
0.125s)
HEI1 Red
or
green
- Reaerved
KEI1
CPRI0to
CPRI5
Red
or
green
Steady red An optical module fails to transmit or
receive signals due to one of thefollowing
causes: The optical module isfaulty.
The fiber optic cable isbroken.
0.125s and off for
0.125s)
The RF module connected to the CPRIlink
has a hardware fault.
and off for 1s)
The CPRI link is out of lock due to one ofthe
followingcauses:
There is no mutual lock betweendual-mode
reference clocks.
The CPRI port rate does not match the rate
of the opticalmodule.
VSWR alarms are reported on the RF
module connected to the CPRI link when a
VSWR test is conducted using a USB flash
drive.
Steady off The optical module cannot be detected.
The CPRI electrical cable is notconnected.

P-41

 RFmodules modulate and demodulate baseband and RFsignals, processdata, amplify
power for signals, and conduct voltage standing wave ratio (VSWR)tests.
 RFU
Radio frequency units (RFUs)perform modulation, demodulation, data processing
and power amplification of RFand baseband signals, and conduct voltage
standing wave ratio (VSWR)detection.
 RRU
Remote radio units (RRUs)perform modulation, demodulation, data processing,
and power amplification of baseband and radio frequency (RF)signals, and
conduct voltage standing wave ratio (VSWR)detection.
 AAU
TheAAU incorporates the functions of radio frequency (RF)modules and antenna
systems.

 Radio frequency units (RFUs)are used in a macro base station to perform modulation,
demodulation, data processing and power amplification of RFand baseband signals, and conduct
voltage standing wave ratio (VSWR)detection.
 CRFUd,LRFUe,MRFUdand MRFUemodules must be used with the BTS3900(Ver.C),BTS3900L
(Ver.C),BTS3900A (Ver.C),or BTS3900AL(Ver.A) cabinet.
 CRFUdsupports two carriers. Thebandwidth per carrier is 1.4, 3, 5, 10, 15, or 20 MHz; the total
bandwidth between the maximum frequency and the minimum frequency of the spectrums for
two carriers does not exceed 40 MHz.
 LFRUsupports one carrier with abandwidth of 5, 10, 15, or 20 MHz in the 2600 MHz band.
 LRFUesupports two carriers. Thebandwidth per carrier is 5, 10, 15, or 20 MHz; the total
bandwidth between the maximum frequency and the minimum frequency of the spectrums for
two carriers does not exceed 30 MHz.
 MRFUsupports one carrier with abandwidth of 1.4/3/5/10/15/20 MHz in the 900MHz band, or
one carrier with bandwidth of 5/10/15/20 MHz in the 1800MHzband.
 MRFUdsupports two carriers with a bandwidth of 1.4/3/5/10/15/20 MHz, the output power per
carrier is,
 2 x 60W, When support one carrier with abandwidth of 5/10/15/20 MHz
 2 x 40W, When support one carrier with abandwidth of 1.4/3 MHz
 2 x 40W, When support two carriers with abandwidth of 1.4/3/5/10/15/20 MHz
 MRFUesupports two carriers with a bandwidth of 1.4/3/5/10/15/20 MHz, the output power per
carrier is,
 with abandwidth of 5/10/15/20 MHz: 1*60W / 2*60W
 with abandwidth of 1.4/3/5/10/15/20 MHz: 1*40W / 2*40W

 TheRFsystem performs modulation, demodulation, data processing, combining, and
splitting for baseband signals and RFsignals.
 CPRIModule
TheCPRIreceives downlink baseband data from the BBUand transmits uplink baseband
data to the BBUfor communications between the RRUand the BBU.
 Power Module, the power module converts -48 VDCpower into the power required by
the other parts of the RRU.
 TRX
TheTRXprovides two RXchannels for uplink RFsignals, two TXchannels for downlink RF
signals, and one feedback channel.
 TheRXchannels down-convert the received signals into IFsignals, amplify them,
and then perform analog-to-digital (A/D)conversion.
 TheTXchannels perform filtering of downlink signals, digital-to-analog (D/A)
conversion, and up-conversion of RFsignals into transmitband.
 Thefeedback channel assistsin downlink power control, Digital Pre-distortion
(DPD),and Voltage Standing Wave Ratio (VSWR)measurement.
 PA,the Power Amplifier amplifies the low-power RFsignals received from the TRX.
 LNA, the Low Noise Amplifier (LNA) amplifies the signals received from the antenna.
 Duplexer, the duplexer multiplexes the RXsignals and the TXsignals, which enables the
RXsignals and the TXsignals to share the sameantenna path. Theduplexer also filters
the RXsignals and the TXsignals.

 LRFUPorts
Silkscreen Connector Function
ANT_TX/RXB DIN
Connects to the antenna system for transitingand
receiving signals
ANT_TX/RXA DIN
Connects to the antenna system for transiting and
receiving signals, supporting RET signaltransmission
CPRI0 SFPfemale
Connectsto the BBU. The CPRI0 port and CPRI1 port
work in backupmode
CPRI1 SFPfemale
Connectsto the BBU. The CPRI1 port and CPRI0 port
work in backupmode
PWR 3V3 power Inputing -48 V DC power
MON RJ-45 Monitoring and maintaining port

 LRFUIndicators
Indicator
Color State Description
RUN Green Steady on There is power supply, but the moduleis
faulty or the version is beingchecked.
Steady off The module is working.
Blinking (on for 1s and off
for 1s)
The module is working.
Blinking (on for0.125s
and off for 0.125s)
The module is loadingsoftware.
ALM Red Seady on Alarms are reported, and the replacement of
the module is required.
Steady off No alarm is reported.
for 1s)
Alarms are reported. Thealarms may be
caused by faulty boards or ports.
ACT Green Seady on TheLRFUfunctions properly.
Steady off TheLRFUis not configured, or the
connection with the BBUis not set up.
Blinking (on for 1s andoff
for 1s)
TheLRFUis being tested on the Site
Maintenance Terminal System.
VSWR Red Steady off No VSWRalarm isdetected.
Seady on A VSWRalarm is detected at the
ANT_TX/RXA port.
for 1s)
A VSWRalarm is detected at the
ANT_TX/RXB port.
and off for 0.125s)
VSWRalarms are detected at the
ANT_TX/RXAport and the ANT_TX/RXB port.
CPRI_
0/
CPRI_1
Red/
Gree
n
Steady green TheCPRIlink is normal.
Steady red Thereception of the optical moduleis
abnormal, and an alarm is generated.
Blinking red (on for 1s
and off for 1s)
TheCPRIlink hasaloss-of-lock error.
Steady off Theoptical module is not in position, or the
optical module is powered off.

 Remoteradio units (RRUs)are usedin adistributed basestation to perform modulation,
demodulation, data processing, and power amplification of basebandand radio frequency (RF)
signals, and conduct voltage standing wave ratio (VSWR) detection.
 AWS：Advancedwireless service 1.7G or 2.1G

P-48

 TheRFsystem performs modulation, demodulation, data processing, combining, and
splitting for baseband signals and RFsignals.
 CPRIModule
TheCPRIreceives downlink baseband data from the BBUand transmits uplink baseband
data to the BBUfor communications between the RRUand the BBU.
 Power Module, the power module converts -48 VDCpower into the power required by
the other parts of the RRU.
 TRX
TheTRXprovides two RXchannels for uplink RFsignals, two TXchannels for downlink RF
signals, and one feedback channel.
 TheRXchannels down-convert the received signals into IFsignals, amplify them,
and then perform analog-to-digital (A/D)conversion.
 TheTXchannels perform filtering of downlink signals, digital-to-analog (D/A)
conversion, and up-conversion of RFsignals into transmitband.
 Thefeedback channel assistsin downlink power control, Digital Pre-distortion
(DPD),and Voltage Standing Wave Ratio (VSWR)measurement.
 PA,the Power Amplifier amplifies the low-power RFsignals received from the TRX.
 LNA, the Low Noise Amplifier (LNA) amplifies the signals received from the antenna.
 Duplexer, the duplexer multiplexes the RXsignals and the TXsignals, which enables the
RXsignals and the TXsignals to share the sameantenna path. Theduplexer also filters
the RXsignals and the TXsignals.

P-50

P-51

P-52

P-53

P-54

P-55

 Remoteradio units (RRUs)are usedin adistributed basestation to perform modulation,
demodulation, data processing, and power amplification of basebandand radio frequency (RF)
signals, and conduct voltage standing wave ratio (VSWR) detection.
 AWS：Advancedwireless service 1.7G or 2.1G

P-57

 An AAU performs the following functions:
 Receives downlink baseband data from the BBU and sends uplink baseband data
to the BBU.
 On the RX channel, it receives RFsignals through feeders, down-converts the RF
signals into IF signals, amplifies them, and performs analog to digital conversion
(ADC). On the TX channel, it filters signals, performs digital to analog conversion
(DAC),and up-converts the RFsignals to the TXband.
 Multiplexes RXsignals and TXsignals to enable these signals to sharethe same
antenna path, and filters RXand TXsignals.
 Transmitsor receives radio waves and forms beams.

 Thefunctional modules of an AAU:
 AU
 Provides AU arrays, feed power, phase shift network, and drive system.
 Providesbuilt-in remote control units (RCUs) that can control circuits.
 Reports information about the AU capability and RUin-position status.
 Providesthe power supplying channel and communication ports between the RUand the
MU.
 Providesports for AAU mounting kits.
 MU
 Providesa-48 VDCport.
 ProvidesCPRIports for CPRIconvergence and distribution.
 Providesprotection and filtering.
 ProvidesOM of the AAU and management of the RUs.
 RU
 On the RXchannel, down-converts RFsignalsinto IFsignals, amplifies them, and performs
ADC.
 On the TXchannel, filters signals, performs DAC, and up-converts the RFsignalsto the TX
band.
 Multiplexes RXsignalsand TXsignalson the RFchannel.
 Providesactive antenna calibration and compensation and parameter configuration.
 Exchangesdata between the AU and MU.
 CU
 Protects avacant slot from dust and water.

 Ports
Item Silkscreen Description
AU ports 790-960(+) RF ports connected to the ANT ports on the external low-
frequency RF module
790-960(-)
1710-2690(+) RF ports connected to the ANT ports on the external high-
frequency RF module
1710-2690(-)
AISG IN RET antenna port connected to the RET port on theexternal
RF module
AISG OUT RET antenna cascading port connected to the RETantenna
port on an external RET antenna so that the external RF
module can adjust downtilts of cascadedantennas
MU ports RX TX CPRI0 Optical/electrical port0
RX TX CPRI1 Optical/electrical port1
PWR -48 V DC power supplyport

 Indicators
Item Silkscreen Color Status Description
RU
indicators
RUN Green Steady on There is power supply, but the module isfaulty.
Steady off There is no power supply, or the module isfaulty.
Blinking (on for
1s and off for1s)
The module is functioningproperly.
Blinking (onfor
0.125s and off
for 0.125s)
The module is being loaded or is notstarted.
ALM Red Steady on Alarms are generated, and the module mustbe
replaced.
Blinking (on for
1s and off for1s)
Alarms are generated. The alarms may becaused
by the faults on the related modules orports.
Therefore, you need to locate the faultbefore
deciding whether to replace themodule.
Steady off No alarm is generated.
ACT Green Steady on The module is functioning properly withTX
channelsenabled.
Blinking (on for
1s and off for1s)
The module is functioning properly withTX
channelsdisabled.
MU
indicators
Blinking (on for
1s and off for1s)
Blinking (onfor
0.125s and off
for 0.125s)
Software is being loaded to the module, or the
module is notstarted.
replaced.
Blinking (on for
1s and off for1s)

 Indicators
Item Silkscreen Color Status Description
MU
indicators
Blinking (on for
1s and off for1s)
Blinking (onfor
0.125s and off
for 0.125s)
Software is being loaded to the module, orthe
module is notstarted.
replaced.
Blinking (on for
1s and off for1s)
CPRI0 Red
or
green
Steady red An optical module fails to receive or transmit
signals because the optical module is faultyor
the fiber optic cable isbroken.
Blinking red(on
for 1s and off
for 1s)
The CPRI link is out of lock. The possible cause is
that clocks of two modes are not synchronized or
the data rate negotiationover CPRI ports fails.
You are advised to check thesystem
configuration to locate thecause.
Steady off The SFP module is not properly installed, orthe
optical module is poweredoff.
CPRI1 Red
or
green
Steady red An optical module fails to receive or transmit
signals because the optical module is faultyor
the fiber optic cable isbroken.
Blinking red(on
for 1s and off
for 1s)
The CPRI link is out of lock. The possible cause is
that clocks of two modes are not synchronized or
the data rate negotiationover CPRI ports fails.
You are advised to check thesystem
configuration to locate thecause.
Steady off The SFP module is not properly installed, orthe
optical module is poweredoff.

 STMA(Smart Tower-mounted Amplifier) mode. In this mode, the distance between the
RRUand the RCUis longer than 20 m and the TMA is required for the eNodeB.
 A command is sent to the BBUon the U2000 or the LMT, and then the BBU
transfers that command to the RRU.TheRRUtransfers the DCpower and the
OOK(On-Off-Keying )signals to the STMAfrom the connector on top of the
cabinet. TheSTMAdemodulates the OOKsignals to RS485signals and then
supplies the RS485 signals and part of the DCpower to theRCU.
 SBT(Smart Bias-Tee)mode. In this mode, the distance between the RRUand the RCUis
longer than 20 m and the TMA is not required for the eNodeB.
transfers that command to the RRU.TheRRUtransfer the DCpower and the OOK
signals to the SBTfrom the connector on top of the cabinet. TheSBTdemodulates
the OOKsignals to RS485signals and then supplies the RS485 signals and part of
the DCpower to the RCU.
 Direct connection through multi-core cables. In this mode, the distance between the RRU
and the RCU(Remote Control Unit )is shorter than 20 m.
transfers that command to the RRU.TheRRUmodulates the command to RS485
signals, and then transfers the signals and the DCpower to the RCUthrough
multi-core cables.

 In the case,RCUof Huawei and the SBTof Kathrein areconfigured.
 TheRCU(Remote Control Unit) is the motor drive of the phase shifter inside the electrical
antenna. It receives and runs the control commands from the base station and drives the
stepper motor. Thestepper motor drives the phase shifter inside the antenna device, and
the phase shifter adjusts the antenna tilt. Interface RS485 functions asthe control
interface of the RCU.
 TheSBT(Smart Bias-Tee)provides DCpower supply and control commands through the
feeder for the RCU.TheSBTis installed on the RETantenna side. TheSBTprovides the
following functions:
 TheSBTconverts the control commands that are modulated with OOKby the
feeder into the RS485signals and transfers the signals to theRCU.
 TheSBTconverts the RS485signals from the RCUinto OOKsignals and transfers
the signals to the feeder.
 TheSBTdivides and sends the RFsignals and control signals from the feeder to
the antenna and the RCU.
 TheSBTtransmits the direct current from the feeder to the RCU.

P-65

P-66

 Components in the BTS3900Acabinet
Module
Optional or
Mandatory
Max.Config
Per Cabinet Remarks
RFU Optional 6 TheRFUperforms modulation and demodulation
between baseband signals and RFsignals,
processesdata, and combines and divides signals.
RFUfiller
panel
Optional 6 Toensure proper ventilation of the cabinet, the
slot in the RFUsubrack that is not installed with an
RFUmust be installed with a filler panel.
Fan box Mandatory 1 Thefan dissipates the heat in the cabinet.
BBU3900 Optional 1 The BBU3900 processes the baseband signals and
enables interaction between the base station and
the base station controller.
DCDU-01 Mandatory 1 TheDCDU-01 provides DCpower to all
components in the cabinet.
Power
equipmen
t (DC/DC)
Mandatory 1 Thepower equipment (DC/DC)converts external
+24 VDCpower into –48 VDCpower and
provides power to all components in the cabinet.
Power
equipmen
t (AC/DC)
Optional 1 Thepower equipment (AC/DC)converts external
220 VACsingle-phase, 220 VACthree-phase, and
110 VACdual-live-wire power into –48 VDCand
provides power to all components in the cabinet.

 Specification of BTS3900Lcabinet
Item Specification
Dimensions
Cabinet dimensions 1600mm(H)*600mm(W)*450(D)
Basedimensions 40mm(H)*600mm(W)*450(D)
Weight
empty cabinet ≤75Kg
Assembly cabinet ≤110kg
With full configuration ≤235kg
Power Supply -48VDC -48V(-38.4~-57V)
Power Consumption ≤5860W
Heat Consumption ≤5010W
Temperature
long term -20℃~50℃
Short term 50℃～55℃
Humidity 5%～95%RH
Installation Type
Support installation on concrete ground,
and anti-electro static floor.
Installing back on wall, maintenancein
front, no need to open the backdoor.

 Tomeet requirements in different outdoor environments, multiple cabinets with different
functions are provided by Huawei for distributed macro base stations. TheAdvanced
Power module with heat exchanger (APM30H) and Radio Frequency Cabinet (RFC)
provides space and surge protection and enables power distribution and heat dissipation
for the BBU3900 and RFU.TheIntegrated Battery Backup Systemwith direct ventilation
(IBBS200D)and Integrated Battery Backup Systemwith TECcooler (IBBS200T)provides
long-duration backup power for abase station. TheTransmission Cabinet of 11 Uhigh
with heat exchanger (TMC11H) provides space for customer equipment.

 Components in the TMC11H cabinet
Module
Optional or
Mandatory
Max. Config/
Cabinet
Remarks
1. DCDU-
01
Mandatory 1
TheDirect Current Distribution Unit-
01 (DCDU-01)is aDCpower
distribution unit supplying power to
each component in the RFC.
2. Fanbox Mandatory 1
Thefan box is configured with the
fan and CMUA. Thefan dissipates
heat in the cabinet, and the CMUA
provides the functions of the
temperature control, Booleanalarm
detection, and ELUidentification of
the cabinet.
3. RFU Mandatory 6
TheRFU,a Radio Frequency Unit,
performs the functions such as
modulation and demodulation
between baseband signals and RF
signals, data processing, and signal
combination and division.

Cabinet Name Cabinet Description
BTS3900AL (Ver.A) cabinet
The BTS3900AL (Ver.A) cabinet, basic cabinet in a
BTS3900AL, uses a heat exchanger to dissipate heatand
houses the BBU, power equipment, RFUs, transmission
equipment, and storage batteries. Different power
equipment can be installed in BTS3900AL (Ver.A)
cabinets to support the AC or DC powersupply.
The BTS3900AL (Ver.A) cabinet supplied with AC power is
referred to as a BTS3900AL AC cabinet.
The BTS3900AL (Ver.A) cabinet supplied with DC power is
referred to as a BTS3900AL DC cabinet.
IBBS700D orIBBS700T
IBBS300D orIBBS300T
The battery cabinets provide backup power for abase
station.
TMC11H (Ver.D)
The TMC11H (Ver.D), transmission cabinet in a
BTS3900AL, is installed when more transmission space is
required to provide power supplies and installationspace
for transmissionequipment.

 Tomeet requirements in different outdoor environments, multiple cabinets with different
functions are provided by Huawei for distributed macro base stations. TheAdvanced
Power module with heat exchanger (APM30H) provides space and surge protection and
enables power distribution and heat dissipation for the BBU3900 and RFU.TheIntegrated
Battery Backup System with direct ventilation (IBBS200D)and Integrated Battery Backup
Systemwith TECcooler (IBBS200T)provides long-duration backup power for abase
station. TheTransmission Cabinet of 11 Uhigh with heat exchanger (TMC11H) provides
space for customer equipment.

 Theadvanced power module APM30 is apower backup system for outdoor applications.
It provides the DBS3900with –48 VDCpower and backup batteries. It also provides
space for the BBU3900 and customer equipment to facilitate rapid network deployment.
 With -48V 24Ah build-in batteries:5U space
 Without build-in batteries:7U space
 TheAPM30 can provide the following functions:
 DCpowersupply
 Battery management
 Power system monitoring
 Power distribution
 Surgeprotection
 Temperature control
 Power backup
 Accommodation of customerequipment
 TheAPM30, small and light, can be configured with built-in 24 Ah batteries and
dissipates heat using a breathable film and fans. TheAPM30H can be configured in low-
air-quality areas.TheAPM30H dissipates heat using a heat exchanger and outer and
inner air circulation fans.

 Components in the APM30H cabinet
Module
Optional or
Mandatory
Max.Config
Per Cabinet
Remarks
Thefan box is configured with the fan, Hert Power
Monitoring Interface unit (HPMI), and Central
Monitoring Unit type A (CMUA). It is used to
dissipate heat in the cabinet.
2. SLPU Mandatory 2
Providing protection for trunk signals asa
mandatory component. TheSLPUis configured
with the Universal E1/T1Lightning Protection unit
(UELP)or Universal FELightning Protection unit
(UFLP).
TheSLPUis an optional component, which is used
to protect monitoring signals, is installed in the 1 U
space below the BBU.It contains two
Universal Signal Lightning Protection unit 2
(USLP2s).
3. PSU
(AC/D
C)
Mandatory 3
Thepower supply unit (PSU)converts 110 V/220 V
ACpower into -48 VDCpower.
4. EPS
subrac
k
Mandatory 1
TheEPSprovides functions of ACand DCpower
distribution for the cabinet. There are two types of
EPSs,which are used in 110 VACand 220 VAC
power supply scenarios.

 Components in the APM30H cabinet
Module
Optional or
Mandatory
Max.Config
Per Cabinet
Remarks
5.
BBU3900
Mandatory 1
TheBBU3900 processesthe baseband signals
and enables interaction between the base
station and the BSCor RNC.
6. EMUA Optional 1
TheEnvironment Monitoring Unit (EMUA)
monitors the
internal environment of the cabinet and
reports related alarms. TheEMUA must be
configured when 16 Boolean alarm inputs are
required. It is installed in the
1 Uspace below the BBU.
7.PMU Mandatory 1
ThePower Monitoring Unit (PMU) provides the
functions of power systemand battery
management, power monitoring, and alarm
reporting.
8. Heater Optional 1
A heater is an optional component. It ensures
that the
customer equipment in the cabinet works ina
proper temperature scope when the
surrounding temperature is low. It is installed
in the 1 Uspace at the bottom of
the cabinet. If both the heater and SOU are
configured, the heater is installed in the 1 U
space above the SOU.
9.SOU Optional 1
TheSOUis an optional component. It transfers
ACpower supply to the customer equipment
and is installed in the 1 Uspace at the bottom
of the cabinet.

 Components in the IBBS200Dcabinet
Module
Optional or
Mandatory
Max. Config
Per Cabinet
Remarks
The FAN is installed on the front door
of the cabinet, dissipating heat in the
cabinet.
2. CMUA Mandatory 1
TheCMUA provides functions of
temperature control, Boolean alarm
detection, and ELUidentification of the
cabinet.
3. Power
distributio
n
box
Mandatory 1
Thepower distribution box is installed
on the upper right of the cabinet,
transferring and distributing power to
the TECor fan and to the batteries.
4. Battery Mandatory 8
Thebattery provides long-duration
backup power for abase station.

 Components in the IBBS200Tcabinet
Module
Optional or
Mandatory
Max.Config
Per Cabinet Remarks
1. TEC Mandatory 1 TheTECis installed in the protecting hood for
the TECon the front door of the cabinet. The
TECconsists of the TECmodule, inner air
circulation fan, outer air circulation fan, heat-
dissipation piece, and monitoring board.
2.
CMUA
Mandatory 1 TheCMUA provides functions of temperature
control, Boolean alarm detection, and ELU
identification of the cabinet.
3. Power
Distribut
ion box
Mandatory 1 Thepower distribution box is installed on the
upper right of the cabinet, transferring and
distributing power to the TECor fan and to
the batteries.
4.
Battery
Mandatory 8 Thebattery provides long-duration backup
power for abase station.

 TheTMCcan be configured when more spaceis required for transmission
equipment. Thecabinet, used outdoors, is small in size and easyto transport. The
TMCdissipates heat through abreathable film and fans. TheBBU3900 can be
installed in the TMC.
 A TMCcan provide amaximum of 11 Uspace for customerequipment.
 TMC11H providing space for the transmission equipment, asshown inA
 TMC11H configured with the BBU3900 in the -48 VDCpower supply scenario, as
shown in B

 Components in the TMC11H cabinet
Module
Optional or
Mandatory
Max. Config/
Cabinet
Remarks
Thefan box is configured with the fan, HPMI, and
CMUA, dissipating heat in the cabinet.
2. SLPU Mandatory 2
TheSLPUis installed in the top 1U spaceof the
cabinet, providing protection for trunk signals asa
mandatory component. TheSLPUis configured
with the UELPor
UFLP.
Toprotect monitoring signals, an SLPUconfigured
with two USLP2smay be configured, which is
installed in the 1 Uspaceunder theBBU
3. DCDU-
03
Mandatory 1
TheDirect Current Distribution Unit-03 (DCDU-03)
supplies power to each component in the TMC11H.
TheDCDU-03 is of 3U high.
4.
BBU3900
Mandatory 1
The BBU3900 processes the baseband signals and
enables interaction between the base station and
the BSCor RNC.
5. Heater Optional 1
A heater is an optional component. It ensures that
the
customer equipment in the cabinet works in a
proper temperature scope when the surrounding
temperature is low. It is installed in the 1 Uspaceat
the bottom of
the cabinet.

 It can be installed on the ground.
 It supports the installation of sixRRUs.
 Theupper and lower adjustable beamson an IFS06can be moved up and down to fit
for heights of RRUs.
P-80

 Power cables shipped with RRUscannot support long-distance power supply. Therefore,
when power supply is far from the equipment, cables with large core diameters are used,
and an OCBconnects these cables and RRUpower cables

P-82

 Ports and indicators on the OPM50M
Item Silkscreen Description
(1) Portsin
thecabling
cavity
RTN(+)
DC output port connecting to theIBBS20D
NEG(-)
LOAD0,LOAD1,
LOAD2,LOAD3,
and LOAD4
DC output ports connectingto the RRUs, transmission
module, and BBU3910A
(2)Portsat
the bottom
COM_ALM
External monitoring port connecting to external alarm
device and supporting four dry contact inputs and one
RS485 input
COM_OUT
Alarm port connectingto another OPM50Mand
supporting one RS485input
COM_IN
Alarm port connecting to an RRU or BBU3910A and
supporting one RS485 input and one dry contactinput
PWR Port for power input
BAT
DC output port, through which a power cable can enter
the cabling cavity and be connected to the port marked
RTN(+) and NEG(-)
(3)Indicators RUN
When it is steady green, the output power isnormal.
When it is steady off, there is no outputpower.

 It can be used together with the RRU,BBU3910A, OPM50M, OMB (Ver.C),and IMB03 to
provide backup power.
 Components in the IBBS20Dcabinet
Module
Optionalor
Mandatory
Max. Config
Per Cabinet
Remarks
1. Fan Mandatory 1
The fan is located on the front door of the cabinet. It promotes the inner and
outer air circulation of the cabinet to ensure that the cabinet works within an
acceptable temperature range. This allows the batteries to work properly.
2. Storage
battery
Mandatory 4
12 V 20 Ah storage batteries provide short-duration backup power for a base
station. Their dimensions (H x W x D) are as follows: 76 mm x 166 mm x 181
mm (2.99 in. x 6.54 x 7.13in.).
3. Door Status
Sensor
Mandatory 1 The door status sensor monitors whether the cabinet door is open.
4. ELU Mandatory 1
An electronic label unit (ELU) reports the cabinet type automatically to
facilitate troubleshooting.
5.CMUG Mandatory 1
The central monitoring unit type G (CMUG) monitors the temperature in the
cabinet, detects Boolean alarms, and identifies the electronic label.
6.Power
Distributio
n Box in an
IBBS20D
Mandatory 1
The power distribution box is installed in the lower part of the inner right
wall of the cabinet, transferring and distributing power to the fan and
storage batteries in the cabinet.
7.(Optional)H
e ating Film
Optional 1
The heating film ensures that the storage batteries in the cabinet work
within an acceptable temperature range when the environmental
temperature is low. This allows the batteries to work properly.

 Ports on SPM60A
No. Tag Description
(1)
Cabling
cavity
port
N1
Power bindingpost
N2
L1
L2
PE: Connecting output groundterminal
PE: Connecting input groundterminal
(2) Back
panel
port
Connecting external groundterminal
(3)
Bottom
panelport
IN
Connecting the input power cable from the ACpower
equipment to SPM60A.
OUT
Connecting the output power cable from SPM60Ato
protectedequipment.
P-85

P-86

 A x B MHz indicates that an eNodeB is configured with A cells of B MHz bandwidth.
xTyR indicates that each cell usesx TX channels and y RX channels. For example, "3 x 10
MHz, 2T2R" indicates that the eNodeB is configured with three cells of 10 MHz
bandwidth, and each cell usestwo TXchannels and two RXchannels.
 Besides, UMPT, LBBPb, LBBPd1,LBBPd2,2TX4RXor 4TX4RXRRUand other RFUcan be
used for the specific configurations.

P-88

P-89

 GLbasestation is aseparate-MPT basestation. This meansthat in one single BBU,there
are two main control boards working in GSMand LTEmodesseparately.
 G*Lbase station is a co-MPT GLbase station. This meansthat in one single BBU,the main
control board work in GSMand LTEmodessimultaneously.

 ULbasestation is aseparate-MPT basestation. This meansthat in one single BBU,there
are two main control boards working in UMTSand LTEmodesseparately.
 U*L base station is aco-MPT ULbase station. Thismeansthat in one single BBU,the main
control board work in UMTSand LTEmodes simultaneously.

 G[U*L] indicates that one single BBU work in triple modes. The BBU is configured with
two main control boards. One is the GTMU or GTMUb working in GSM mode, and the
other is the UMPTworking in UMTSand LTEmodes.
 G*U*Lindicates that one single BBUis configured with one UMPTworking in triple modes

P-93

 Different quality of RFUsor RRUwill be configured according to the specific types of
RRUsor RRUswith different quality of antennaports.

Topology Advantage Disadvantage Remarks
Star •Transmission reliability is
high. When an RRUor an
optical fiber is faulty, only
the related sector is
affected.
•Installation and
maintenance areeasy.
RRUscannot be cascadedwhen
the star topology is used.
RRUscan be connected to any
CPRIports on the LBBPcor
LBBPdwhen the star topology
is used.
Chain The chain topology
reduces the cost for
optical fibers.
•Thenumber of cascadinglevels
and cascading distances are
restricted.
•Faults in an upper-level RRU
may affect lower-level RRUs.
•RRU3232s cannot be
cascaded.
•A maximum of four RRU3251s
can be cascaded.
•RRUsto be cascadedmust
have the sameCPRIdata rate.
Load
sharing
•Transmission reliability
improves.
•Wider transmission
bandwidth can be
achieved with two optical
fibers.
•Two optical fibers must be
connected to oneRRU.
•Theinter-board load-sharing
topology requires two LBBPcor
LBBPd boards.
•RRUscannot be cascaded
when the load-sharingtopology
is used.
If the LBBPcis used, a20 MHz
8T8Rcell is supported only
when the load-sharing
topology is used.

 Star topology
 Advantage: EacheNodeB is connected directly to the MME through the transport
network. Therefore, this simple topology features easyengineering, maintenance, and
capacity expansion; EacheNodeB exchanges data with the MME directly. Signals travel
through only afew nodes, and therefore network reliability is high
 Disadvantage: Compared with the other two topologies, the star topology requires more
transmission resources
 Chain topology & Tree topology
 Advantage: Thecosts of transmission equipment, engineering, and transport line leaseare
relatively low
 Disadvantage: Signals travel through many nodes, and therefore network reliability is low.
Eachlower-level eNodeB occupies some transmission bandwidth of its upper-level eNodeB.
Reliability of the upper-level eNodeB affects operation of the lower-level eNodeB.
 System Reliability
 Route backup
 Route backup enhances transmission reliability by using apair of primary and
secondary routes to the samedestination. Theroutes are prioritized: A higher
priority is set for the primary route, and alower priority for the secondary route.
 Operation and maintenance (O&M) channel backup
 TheU2000 detects channel connectivity by employing the handshake mechanism
at the application layer. If detecting that the active channel is disconnected, the
U2000 instructs the eNodeB through the standby channel to perform achannel
switchover. TheeNodeB automatically switches from the route for the active
channel to the route for the standbychannel.
P-96

P-97

P-98

1. oeb006910 e nodeb lte v100r008c10 product description issue 1.00

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