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BTS3900 (Ver.C)
Hardware Description
Issue 04
Date 2012-01-10
HUAWEI TECHNOLOGIES CO., LTD.
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Copyright Huawei Technologies Co., Ltd. 2012. All rights reserved.
No part of this document may be reproduced or transmitted in any form or by any means without prior written
consent of Huawei Technologies Co., Ltd.
Trademarks and Permissions
and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.
All other trademarks and trade names mentioned in this document are the property of their respective holders.
Notice
The purchased products, services and features are stipulated by the contract made between Huawei and the
customer. All or part of the products, services and features described in this document may not be within the
purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,and recommendations in this document are provided "AS IS" without warranties, guarantees or representations
of any kind, either express or implied.
The information in this document is subject to change without notice. Every effort has been made in the
preparation of this document to ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute the warranty of any kind, express or implied.
Huawei Technologies Co., Ltd.
Address: Huawei Industrial Base
Bantian, Longgang
Shenzhen 518129
People's Republic of China
Website: http://www.huawei.com
Email: [email protected]
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About This Document
PurposeThis document serves as a reference for planning and deploying the BTS3900 (Ver.C) (referred
to as BTS3900) cabinet. It describes the functions of boards, modules, and ports, and the details
such as port types, cable types, cable connections, and connector specifications.
Product VersionsThe following table lists the product versions related to this document.
Product Name Product Version
BTS3900L (Ver.C) V100R003C00
BTS3900L (Ver.C) GSM V100R009C00
V100R012C00
BTS3900L (Ver.C) WCDMA V200R012C00
Intended AudienceThis document is intended for:
l System engineers
l Base station installation engineersl Site maintenance engineers
Organization1 Changes in the BTS3900 (Ver.C) Hardware Description
This section describes the changes in theBTS3900 (Ver.C) Hardware Description.
2 Exterior of the BTS3900 Cabinet
The BTS3900 cabinet is a vertical cabinet, which is designed in compliance with the IEC297standard.
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3 BTS3900 Hardware Configurations
This chapter describes configurations of the BTS3900 cabinet, power configurations, and
monitoring configurations. It serves as a reference for planning and deploying the BTS3900.
4 BTS3900 Components
BTS3900 components consist of the BBU3900, RFUs, DCDU-11A, fan box, power equipment
(AC/DC), and optional modules. The power equipment (AC/DC) is configured only in the
BTS3900 cabinet (220 V AC).
5 BTS3900 Cables
This chapter describes the BTS3900 cables. The BTS3900 cables consist of the PGND cable,
power cable, transmission cable, CPRI cable, signal cable, and RF cable.
6 BTS3900 Auxiliary Equipment
Auxiliary equipment can be installed in the BTS3900 if required.
Conventions
Symbol Conventions
The symbols that may be found in this document are defined as follows.
Symbol Description
Indicates a hazard with a high level of risk, which if not
avoided, will result in death or serious injury.
Indicates a hazard with a medium or low level of risk, which
if not avoided, could result in minor or moderate injury.
Indicates a potentially hazardous situation, which if not
avoided, could result in equipment damage, data loss,
performance degradation, or unexpected results.
Indicates a tip that may help you solve a problem or save
time.
Provides additional information to emphasize or supplement
important points of the main text.
General Conventions
The general conventions that may be found in this document are defined as follows.
Convention Description
Times New Roman Normal paragraphs are in Times New Roman.
Boldface Names of files, directories, folders, and users are in
boldface. For example, log in as user root.
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Convention Description
Italic Book titles are in italics.
Courier New Examples of information displayed on the screen are in
Courier New.
Command Conventions
The command conventions that may be found in this document are defined as follows.
Convention Description
Boldface The keywords of a command line are in boldface.
Italic Command arguments are in italics.
[ ] Items (keywords or arguments) in brackets [ ] are optional.
{ x | y | ... } Optional items are grouped in braces and separated by
vertical bars. One item is selected.
[ x | y | ... ] Optional items are grouped in brackets and separated by
vertical bars. One item is selected or no item is selected.
{ x | y | ... }* Optional items are grouped in braces and separated by
vertical bars. A minimum of one item or a maximum of all
items can be selected.
[ x | y | ... ]* Optional items are grouped in brackets and separated by
vertical bars. Several items or no item can be selected.
GUI Conventions
The GUI conventions that may be found in this document are defined as follows.
Convention Description
Boldface Buttons, menus, parameters, tabs, window, and dialog titles
are in boldface. For example, click OK.
> Multi-level menus are in boldfaceand separated by the ">"
signs. For example, choose File> Create> Folder.
Keyboard Operations
The keyboard operations that may be found in this document are defined as follows.
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Format Description
Key Press the key. For example, press Enterand press Tab.
Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl+Alt
+Ameans the three keys should be pressed concurrently.
Key 1, Key 2 Press the keys in turn. For example, pressing Alt, Ameans
the two keys should be pressed in turn.
Mouse Operations
The mouse operations that may be found in this document are defined as follows.
Action Description
Click Select and release the primary mouse button without moving
the pointer.
Double-click Press the primary mouse button twice continuously and
quickly without moving the pointer.
Drag Press and hold the primary mouse button and move the
pointer to a certain position.
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Contents
About This Document.....................................................................................................................ii
1 Changes in the BTS3900 (Ver.C) Hardware Description.......................................................1
2 Exterior of the BTS3900 Cabinet.................................................................................................3
3 BTS3900 Hardware Configurations...........................................................................................4
3.1 Module Configurations in the Cabinet...............................................................................................................5
3.2 Cabinet Application Scenarios........................................................................................ ...................................7
3.3 Power Equipment.............................................................................................................................................10
3.3.1 Configurations of the Upper-Level Circuit Breakers and Power Cables................................................11
3.3.2 Cabinet Power Distribution.....................................................................................................................14
3.4 BTS3900 Monitoring System...........................................................................................................................15
3.4.1 BBU Monitoring Ports.............................................................................................................................15
3.4.2 Monitoring Principles of the Cabinet......................................................................................................16
3.4.3 Customized Alarm Inputs........................................................................................................................18
4 BTS3900 Components.................................................................................................................20
4.1 BBU3900 Equipment.......................................................................................................................................22
4.1.1 BBU3900.................................................................................................................................................22
4.1.2 BBU3900 Components............................................................................................................................23
4.2 GRFU................................................................................................................................................................76
4.3 DRFU................................................................................................................................................................80
4.4 WRFU...............................................................................................................................................................83
4.5 MRFU...............................................................................................................................................................87
4.6 LRFU................................................................................................................................................................90
4.7 DCDU-11A.......................................................................................................................................................94
4.8 Fan Box.............................................................................................................................................................95
4.9 GATM..............................................................................................................................................................97
4.10 ELU................................................................................................................................................................99
4.11 Power Equipment (AC/DC)............................................................................................................................99
4.11.1 Structure of the Power Equipment AC/DC...........................................................................................99
4.11.2 PMU.....................................................................................................................................................100
4.11.3 PSU (AC/DC)......................................................................................................................................103
4.11.4 Power Subrack (AC/DC).....................................................................................................................105
BTS3900 (Ver.C)
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5 BTS3900 Cables..........................................................................................................................106
5.1 List of BTS3900 Cables.................................................................................................................................108
5.2 Cable Connections..........................................................................................................................................113
5.2.1 Power Cable Connections......................................................................................................................113
5.2.2 Transmission Cable Connections..........................................................................................................115
5.2.3 CPRI Cable Connections.......................................................................................................................142
5.2.4 Monitoring Signal Cable Connections..................................................................................................153
5.2.5 RF Cable Connections...........................................................................................................................156
5.3 PGND Cables.......................................................................... .......................................................................169
5.4 Equipotential Cable........................................................................................................................................170
5.5 Power Cables..................................................................................................................................................170
5.5.1 Input Power Cable for the Cabinet........................................................................................................170
5.5.2 DCDU-11A Power Cable......................................................................................................................172
5.5.3 BBUPower Cable.................................................................................................................................173
5.5.4 Power Cable for the FAN Box..............................................................................................................173
5.5.5 RFU Power Cable..................................................................................................................................174
5.5.6 GATM Power Cable..............................................................................................................................175
5.6 Transmission Cables.......................................................................................................................................176
5.6.1 E1/T1 Cable...........................................................................................................................................176
5.6.2 FE/GE Cable..........................................................................................................................................179
5.6.3 FE/GE Fiber Optic Cable......................................................................................................................180
5.6.4 Interconnection Cable Between the FE Electrical Ports........................................................................181
5.6.5 Interconnection Cable Between FE Optical Ports.................................................................................181
5.7 CPRI Electrical Cable.....................................................................................................................................182
5.8 Signal Cables..................................................................................................................................................182
5.8.1 Monitoring Signal Cable for the PMU..................................................................................................182
5.8.2 Monitoring Signal Cable for the Fan Box.............................................................................................183
5.8.3 Fan BoxCascade Signal Cable..............................................................................................................184
5.8.4 Monitoring Signal Cable for the EMU..................................................................................................185
5.8.5 Monitoring Signal Cable for the GATM...............................................................................................185
5.8.6 BBU Alarm Cable.................................................................................................................................186
5.8.7 GPS Clock Signal Cable........................................................................................................................1885.8.8 Signal Cable for the ELU......................................................................................................................188
5.9 BTS3900 RF Cables.......................................................................................................................................189
5.9.1 RF Jumper..............................................................................................................................................189
5.9.2 Inter-RFU RF Signal Cable...................................................................................................................190
6 BTS3900 Auxiliary Equipment................................................................................................191
6.1 EMU...............................................................................................................................................................192
6.2 DDF................................................................................................................................................................192
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1Changes in the BTS3900 (Ver.C) HardwareDescription
This section describes the changes in theBTS3900 (Ver.C) Hardware Description.
04 (2012-01-10)
This is the fourth commercial release.
Compared with issue 03 (2011-10-25), no content is added.
Compared with issue 03 (2011-10-25), this issue incorporates the following changes:
Content Change DescriptionWMPT Add the transmission specifications of the
boards.UTRP
GTMU
LMPT
GTMU Modified the status description of LEDs on
the panel of the GTMU.
UBRI Modified the status description of LEDs on
the panel of the UBRI.
Compared with issue 03 (2011-10-25), no content is deleted.
03 (2011-10-25)
This is the third commercial release.
Compared with issue 02 (2011-09-30), no content is added.
Compared with issue 02 (2011-09-30), this issue incorporates the following changes:
BTS3900 (Ver.C)
Hardware Description 1 Changes in the BTS3900 (Ver.C) Hardware Description
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Content Change Description
About This DocumentAdded the version V300R009 to BTS3900
(Ver.C) GSM.
UTRPUpdated the LED indicators on the panel ofthe UTRP.
Compared with issue 02 (2011-09-30), no content is deleted.
02 (2011-09-30)
This is the second commercial release.
Compared with issue 01 (2011-08-30), no content is added.
Compared with issue 01 (2011-08-30), this issue incorporates the following changes:
Content Change Description
3.3.1 Configurations of the Upper-Level
Circuit Breakers and Power Cables
Updated the specifications for the upper-level
circuit breakers and cables used for supplying
AC power to the cabinet.
5.2.1 Power Cable ConnectionsUpdated the figure of power cable
connections.
GTMUModified the description of the E1 bypass
function.
UTRP Modified the description of DIP switches.
Compared with issue 01 (2011-08-30), no content is deleted.
01 (2011-08-30)
This is the first commercial release.
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2Exterior of the BTS3900 CabinetThe BTS3900 cabinet is a vertical cabinet, which is designed in compliance with the IEC297
standard.
Figure 2-1shows the exterior and dimension of a BTS3900 cabinet.
Figure 2-1Exterior and dimension of a BTS3900 cabinet
BTS3900 (Ver.C)
Hardware Description 2 Exterior of the BTS3900 Cabinet
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3BTS3900 Hardware ConfigurationsAbout This Chapter
This chapter describes configurations of the BTS3900 cabinet, power configurations, and
monitoring configurations. It serves as a reference for planning and deploying the BTS3900.
3.1 Module Configurations in the Cabinet
The BTS3900 cabinet uses a modular design. The main components in the cabinet are the
BBU3900, RFU, DCDU-11A, fan box. The power equipment (AC/DC) is an optional
component.
3.2 Cabinet Application Scenarios
BTS3900 cabinets can be stacked or installed side by side. The side-by-side installation mode
is recommended. If the space in the equipment room is insufficient, the stack mode can be used.
3.3 Power Equipment
The BTS3900 supports 110 V AC, 220 V AC, and -48 V DC power supplies. When AC power
supply is used, the AC power must be converted to -48 V DC power for the base station.
3.4 BTS3900Monitoring System
The BTS3900 monitoring system monitors all boards and components in the cabinet. If any
board or component is faulty, an alarm is automatically reported. Alarm signals are collected
both inside and outside the cabinet by the UPEU, UEIU, EMU, PMU, and FMU, achieving
monitoring of the entire BTS3900.
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3.1 Module Configurations in the Cabinet
The BTS3900 cabinet uses a modular design. The main components in the cabinet are the
BBU3900, RFU, DCDU-11A, fan box. The power equipment (AC/DC) is an optional
component.
The BTS3900 cabinets can be classified into two types: the BTS3900 cabinet (-48 V DC) and
BTS3900 cabinet (AC).
Figure 3-1Module configurations in the BTS3900 cabinet (-48 V DC)
(1) RFU (2) Fan box (3) Air inlet
(4) BBU3900 (5) DCDU-11A -
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Figure 3-2Module configurations in the BTS3900 cabinet (AC)
(1) RFU (2) Fan box (3) Air inlet
(4) BBU3900 (5) DCDU-11A (6) Power equipment (AC/DC)
Table 3-1describes the components in the cabinet.
Table 3-1Components in the cabinet
Module Optional orMandatory
MaximumNumberConfiguredin a SingleCabinet
Remarks
RFU Mandatory 6 The RFU performs modulation and
demodulation between baseband signals and
RF signals, processes data, and combines and
divides signals.
RFU filler
panel
Optional 6 To ensure proper ventilation of the cabinet, the
slot in the RFU subrack that does not house an
RFU must be installed with a filler panel.
Fan box Mandatory 1 The fan dissipates heat in the cabinet.
BBU3900 Mandatory The BBU3900 processes the baseband signals
and enables interaction between the base
station and the BSC, RNC, or evolved packet
core (EPC).
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Module Optional orMandatory
MaximumNumberConfiguredin a Single
Cabinet
Remarks
DCDU-11
A
Mandatory 2 When there are two BBUs, two DCDU-11A
modules must be configured to supply power
to the two BBUs respectively. When there is
only one BBU, one DCDU-11A is required.
Power
equipment
(AC/DC)
Optional 1 The power equipment (AC/DC) converts
external 220 V AC single-phase power, 220 V
AC three-phase power, and 110 V AC dual-
live-wire power into -48 V DC power and
provides power to all components in the
cabinet.
Vacant
space
- - l There is a 3 U vacant space in the BTS3900
cabinet (-48 V DC) for customer
equipment.
The customer equipment must be able
to work properly at a temperature equal
to or higher than 55C.
The BTS3900 cabinet (-48 V DC) can
supply power to customer transmission
equipment.
l There is no vacant space in the BTS3900
cabinet (AC).
3.2 Cabinet Application Scenarios
BTS3900 cabinets can be stacked or installed side by side. The side-by-side installation mode
is recommended. If the space in the equipment room is insufficient, the stack mode can be used.
Cabinet Configuration Principles
l Both the BTS3900 cabinets DC (-48 V) and BTS3900 cabinets AC support the side-by-
side installation mode.
l In a single-mode or dual-mode scenario, only one BBU is configured.
l The BTS3900 cabinets DC (-48 V) can be stacked.
l The stacking of the BTS3900 cabinets AC is not recommended. If the cabinets are stacked,
the highest operating temperature of the cabinets is 50C.
Figure 3-3and Figure 3-4show two side-by-side installed cabinets in a single-mode or dual-
mode scenario.
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Figure 3-3Two side-by-side BTS3900 DC (-48 V) cabinets in a single-mode or dual-mode
scenario
Figure 3-4Two side-by-side BTS3900 AC cabinets in a single-mode or dual-mode scenario
Figure 3-5and Figure 3-6show the stack installation mode with two cabinets in a single-mode
or dual-mode scenario.
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Figure 3-5Two stacked BTS3900 DC (-48 V) cabinets in a single-mode or dual-mode scenario
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Figure 3-6Two stacked BTS3900 AC cabinets in a single-mode or dual-mode scenario
3.3 Power Equipment
The BTS3900 supports 110 V AC, 220 V AC, and -48 V DC power supplies. When AC power
supply is used, the AC power must be converted to -48 V DC power for the base station.
Table 3-2and Table 3-3list the input voltage scopes supported by the BTS3900.
Table 3-2AC input voltage scopes
Power Supply Rated Voltage Operating voltage
200 V AC single-phase 220 V AC to 240 V AC 176 V AC to 290 V AC
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Power Supply Rated Voltage Operating voltage
220 V AC three-phase 220 V AC to 240 V AC 176 V AC to 290 V AC
110 V AC dual-live-wire 100 V AC to 120 V AC 90 V AC to 135 V AC
Table 3-3DC input voltage scope
Power Supply Rated Voltage
-48 V DC -38.4 V DC to -57 V DC
3.3.1 Configurations of the Upper-Level Circuit Breakers and PowerCables
This section describes the recommended configurations of the upper-level circuit breaker and
power cables for the BTS3900. The recommended configurations are all based on a fully
configured base station, which has the peak output power. The power requirements for the
customer equipment in the cabinet are also considered.
The upper-level circuit breakers and power cables used by the BTS3900 varyaccordingto the
external power supply.
NOTE
l All power cables must comply with local standards.
l P is short for Pole, indicating the number of switches simultaneously controlled by a pole.
BTS3900 DC
In the -48 V DC power supply scenario, the recommended configurations of the upper-level
circuit breakers and power cables for the BTS3900 are listed in Table 3-4.
Table 3-4Recommended configurations of the upper-level circuit breakers and power cables
for the BTS3900 DC
Configuration(1)(2)
(9)(10)
Minimum CircuitBreakerConfigurationRequired byCustomer
Equipment(3)(4)(5)
Power Cable(8) Length of the
Power Cable
l Four to six high-
power RFUs(6)
l One to two BBUs(9)
2 x 80A/1P
(recommended)2 x 16 mm2cables
(from one
DCDU-11A)
15 m
1 x 160A/1P 1 x 35 mm2low
smoke zero halogen
(LSZH) cable
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Configuration(1)(2)
(9)(10)
Minimum CircuitBreakerConfigurationRequired by
CustomerEquipment(3)(4)(5)
Power Cable(8) Length of thePower Cable
l Four to six low-
power RFUs(7)
l Two BBUs
1 x 100A/1P 1 x 35 mm2LSZH
cable
2 x 63A/1P 2 x 16 mm2cables
(from one
DCDU-11A)
l Four to six low-
power RFUs
l One BBU
1 x 80A/1P 1 x 16 mm2cable
l One to three high-
power RFUs
l Two BBUs
1 x 100A/1P 1 x 35 mm2LSZH
cable
2 x 63A/1P 2 x 16 mm2cables
(from one
DCDU-11A)
l One to three high-
power RFUs
l One BBU
1 x 80A/1P 1 x 16 mm2cable
l One to three low-
power RFUs
l One to two BBUs
1 x 63A/1P 1 x 16 mm2cable
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NOTE
(1) If both high-power RFUs and low-power RFUs exist in the same base station, the power configuration
for high-power RFUs will apply for the base station.
(2) If possible, it is suggested to configure the base station with the power configuration for maximum
high-power RFUs so as to satisfy all scenarios. If the power configuration has to be in accordance withactual scenarios, the circuit breaker and power cables need to be upgraded in case of base station extension.
(3) The power configuration applicable for the scenarios with higher power consumption is also applicable
for the scenarios with lower power consumption.
(4) The circuit breakers for high load capability are applicable to those for low load capability. The sequence
of load capability for circuit breakers is: 1 x 160A > 2 x 80A > 2 x 63A > 1 x 100A > 1 x 80A > 1 x 63A.
(5) The power consumption of inner transmission is ignored for the circuit breakers of indoor macro base
station.
(6) High-power RFUs include: LRFUe, WRFUd, and MRFUd.
(7) Low-power RFUs include: DRFU, GRFU, WRFU, MRFU, CRFU, LRFU. and MRFU V3.
(8) If two external power inputs are supplied, the following requirements must be met:
l The two power inputs must be supplied by the same power cabinet.
l The circuit breakers used for the two power inputs have the same model and specifications.
l The power cables for the two power inputs must have the same cross-sectional area and length.
l When powering on the base station, turn on the two circuit breakers of power input before turning
on the circuit breakers for all the RFUs. When powering off the base station, turn off the circuit
breakers for all the RFUs before turning off the two circuit breakers of power input.
(9) One DCDU-11A can supply a maximum of three power inputs for two BBUs. The cabinet can be
configured with a maximum of two BBUs, one with power consumption of 650 W and the other with power
consumption of 360 W. If an additional DCDU-11A is configured, the cabinet can be configured with two
BBUs both with power consumption of 650 W.
(10) If two BBU3900s are configured, the second BBU3900 shall obtain power from a power cab inet
outside of the DCDU-11A in the base station that the second BBU3900 installed.
BTS3900 AC
In the 110 V AC or 220 V AC power supply scenario, the recommended configurations of the
upper-level circuit breaker and power cables for the BTS3900 are listed in Table 3-5.
Table 3-5Recommended configurations of circuit breakers and power cables
Configuration Power Supply CircuitBreakerConfiguration
Required byCustomerEquipment
Cross-sectional Areaof the Input
Power Cable
Length of thePower Cable
l One to six
high power
RFUs
l One BBU
220 V AC three-
phase power
1 x 16A/3P 1 x 2.5mm2(11) 15 m
200 V AC
single-phase
power
1 x 32A/1P 1 x 4mm2(12)
110 V AC dual-
live-wire power
1 x 32A/2P
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NOTE
(11) The AC power cable should be double insulated with 4 cores inside.
(12) The AC power cable should be double insulated with 3 cores inside.
3.3.2 Cabinet Power Distribution
This section describes power distribution modes of the BTS3900 cabinet.
Power Distribution of the BTS3900 Cabinet (-48 V DC)
The external power equipment supplies -48 V DC power to the DCDU-11A in the BTS3900
cabinet (-48 V DC), and the DCDU-11A feeds power to each module in the BTS3900 cabinet.
Figure 3-7shows power distribution principles. Table 3-6describes output ports.
Figure 3-7Power distribution of the BTS3900 cabinet (-48 V DC)
NOTE
MCB: miniature circuit breaker
Table 3-6Output ports on the DCDU-11A
Output Port Description
LOAD0 to LOAD5 Supplies power to RFU0 to RFU5
LOAD6 Supplies power to the fan box
LOAD7 and LOAD8 Supplies power to the BBU
LOAD9 Serves as a standby output port
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Power Distribution of the BTS3900 Cabinet (AC)
The external power equipment supplies 220 V AC single-phase or three-phase power, or 110 V
AC dual-live-wire power to the BTS3900 cabinet (AC). The power equipment (AC/DC) converts
the AC power into -48 V DC power and feeds the -48 V DC power to the DCDU-11A. Then,
the DCDU-11A feeds power to each module in the cabinet. Figure 3-8shows power distribution
principles. Table 3-6describes output ports.
Figure 3-8Power distribution of the BTS3900 cabinet (AC)
3.4 BTS3900 Monitoring SystemThe BTS3900 monitoring system monitors all boards and components in the cabinet. If any
board or component is faulty, an alarm is automatically reported. Alarm signals are collected
both inside and outside the cabinet by the UPEU, UEIU, EMU, PMU, and FMU, achieving
monitoring of the entire BTS3900.
3.4.1 BBU Monitoring Ports
The BBU provides two scenarios: 360 W and 650 W. In the 360 W scenario, the UPEU andUEIU are used. In the 650 W scenario, two UPEUs are configured. Each board provides two
Boolean input ports and two RS485 signal input ports. Each Boolean input port can be used for
monitoring four Boolean inputs. Figure 3-9and Figure 3-10show slot configurations.
Figure 3-9Slot configurations of the UPEU and UEIU (in the 360 W scenario)
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Figure 3-10Slot configurations of two UPEUs (in the 650 W scenario)
Table 3-7lists the monitoring ports on the UPEU and UEIU.
Table 3-7Monitoring ports on the UPEU and UEIU
Slot Board Label Connector Quantity Description
Slot 19 UPEU EXT-ALM0 RJ45 1 Port for
Boolean
inputs 0 to 3
EXT-ALM1 RJ45 1 Port for
Boolean
inputs 4 to 7
MON0 RJ45 1 Port for
RS485 input
0
MON1 RJ45 1 Port for
RS485 input1
Slot 18 UEIU
(Optional)
EXT-ALM0 RJ45 1 Port for
Boolean
inputs 0 to 3
EXT-ALM1 RJ45 1 Port for
Boolean
inputs 4 to 7
MON0 RJ45 1 Port for
RS485 input
0
MON1 RJ45 1 Port for
RS485 input
1
3.4.2 Monitoring Principles of the Cabinet
The BTS3900 cabinet is managed by monitoring boards, such as the FMU and PMU. Each
monitoring board is connected to the MON port on the BBU. They collect alarms of allcomponents and report the alarms to the BBU by using the RS485 serial bus.
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l The FMU is configured in the FAN box of BTS3900 DC (-48 V) cabinet or BTS3900 AC
cabinet.
l The PMU is configured in the BTS3900 AC cabinet AC. For details about functions of the
monitoring ports on the PMU, see 4.11.2 PMU.
This document describes monitoring principles of two BTS3900 cabinets. If cabinet 1 is not
configured, the monitoring cables connected to the cabinet are not required.
Figure 3-11Monitoring system for the BTS3900 DC (-48V) cabinet
Figure 3-12Monitoring system for the BTS3900 AC cabinet
NOTE
Refer to 3.4.3 Customized Alarm Inputsfor monitoring principle of the EMU.
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3.4.3 Customized Alarm Inputs
When customer equipment generates an alarm, the alarm must be reported to the BBU.
Customized alarms are reported to the BBU by any of the following methods:
l The alarms are collected by the UPEU or UEIU in the BBU.
l The alarms are collected by the EMU.
For details about the configuration of customized alarms, see the related initial configuration
guide.
Monitoring Board Configuration
The configuration of the monitoring boards in the BTS3900 depends on the number of
customized alarm inputs, as listed in Table 3-8.
Table 3-8Configuration of monitoring boards in the BTS3900
Cabinet Type Number of Dry ContactAlarm Inputs
Monitoring Board
-48 V DC cabinet or
AC cabinet
1 to 8 UPEU
1 to 16 UPEU+UEIU
1 to 32 UPEU+UEIU+EMU
NOTE
l If backup power is required for the BBU, two UPEUs are configured instead of UPEU+UEIU.
l If three cabinets are configured for the BTS3900, only one UEIU is required to monitor both RS485
and dry contact alarms.
l Analog values can be monitored only by the EMU.
l The EMU with sensors can be configured based on site requirements.
Customized Alarms Collected by the UPEU or UEIU
Each UPEU or UEIU in the BBU supports eight Boolean alarm inputs. A maximum of two
UPEUs or UPEU+UEIU can be configured for the BBU to receive 16 Boolean alarm inputs.
This method can be used for the configuration of fewer than 16 customized alarm inputs. The
method of collecting customized alarms by using the UPEU or UEIU is shown in Figure
3-13.
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Figure 3-13Customized alarms collected by the UPEU or UEIU
Customized Alarms Collected by the EMU
If there are more than 16 Boolean alarm inputs, an EMU can be configured for the BTS3900.
Each EMU supports 32 Boolean alarm inputs and two RS485 signal inputs, the cable connections
are shown in Figure 3-14.
l BTS3900 cabinet (-48 V DC): The EMU is connected to the MON1 port on the UPEU in
the BBU.
l BTS3900 cabinet (AC): The EMU is connected to the COM OUT port on the PMU in the
power equipment (AC/DC).
Figure 3-14Customized alarms collected by the EMU
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4BTS3900 ComponentsAbout This Chapter
BTS3900 components consist of the BBU3900, RFUs, DCDU-11A, fan box, power equipment
(AC/DC), and optional modules. The power equipment (AC/DC) is configured only in the
BTS3900 cabinet (220 VAC).
4.1 BBU3900Equipment
This section presents theexterior of the BBU3900 and describes the boards in the BBU3900 and
their panels, functions, indicators, ports, and engineering specifications.
4.2 GRFU
GSM radio frequency unit (GRFU) is an RF unit of GSM radio filter and applies to GO scenario.
4.3 DRFU
Double radiofrequencyunit (DRFU) is an RF unit of GSM radio filter and applies to GO
scenario.
4.4 WRFU
WCDMA Radio Frequency (WRFU) is an RF unit of WCDMA radio filter and applies to UO
scenario.
4.5 MRFU
Multi-Mode Radio Frequency Unit (MRFU) is a type of RF unit that can work in multiple radio
frequencies. It applies to scenarios such as GO, UO, LO, GU and GL.
4.6 LRFU
LTE Radio Frequency Unit (LRFU) is an RF unit of LTE FDD (Frenquency Division Duplex)
and applies to LTE Only scenario.
4.7 DCDU-11A
The DCDU-11A provides DC power to all components in the cabinet.
4.8 Fan Box
A fan box consists of a fan tray, four fans, and an FMU.
4.9 GATM
The GSM Antenna and TMA control Module (GATM) controls the antenna and TMA.
4.10 ELU
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The Electronic Label Unit (ELU) reports the cabinet type information to the fan box.
4.11 Power Equipment (AC/DC)
The power equipment (AC/DC) converts 220 V AC power into -48 V DC power.
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4.1 BBU3900 Equipment
This section presents the exterior of the BBU3900 and describes the boards in the BBU3900 and
their panels, functions, indicators, ports, and engineering specifications.
The BBU3900 performs the following functions:
l Provides ports for communication between the base station and the BSC or RNC.
l The GTMU provides CPRI ports for communication between the BBU and the RFUs.
l Provides USB ports. A USB flash drive can be inserted into the USB port to perform the
automatic base station upgrade during software installation and data configuration.
l Provides an OM channel between the basestation andthe LMT or the M2000 to operate
and maintain the base station.
l Processes uplink and downlink data.
l Manages the entire dual-mode system in terms of OM and signaling processing.
l Provides the system clock.
4.1.1 BBU3900
The BBU3900, which has a case structure, is 19 inches wide and 2 U high.
The dimensions of the BBU3900 are 86 mm x 442 mm x 310 mm x (3.39 in. x 17.4 in. x 12.2
in.) (H x W x D), as shown in Figure 4-1.
Figure 4-1BBU3900
The Electronic Serial Number (ESN) is a unique identifier of a Network Element (NE). It is used
during base station commissioning.
l If there is a label on the FAN unit of the BBU, the ESN is printed on the label and a mounting
ear of the BBU, as shown in Figure 4-2.
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Figure 4-2ESN (1)
l If there is no label on the FAN unit of the BBU, the ESN is printed on a mounting ear of
the BBU, as shown in Figure 4-3.
Figure 4-3ESN (2)
4.1.2 BBU3900 Components
This describes the boards and module of the BBU3900 in terms of their configuration principles,
functions, ports, LEDs, and DIP switches.
Slot Assignment of the BBU3900
This section describes slot assignment of the BBU3900 in the GSM Only (referred to as GO),UMTS Only (referred to as UO), LTE Only (referred to as LO), GSM+UMTS (referred to as
GU), GSM+LTE (referred to as GL), and UMTS+LTE (referred to as UL) scenarios.
Slots of the BBU3900
The board configurations of the BBU3900 in GO mode, BBU3900 in GU mode, BBU3900 in
UO mode, BBU3900 in LO mode, BBU3900 in GL mode, and BBU3900 in UL mode are the
same, as shown in Figure 4-4.
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Figure 4-4Slots of the BBU3900
BBU3900 Working in GO Mode
Table 4-1describes the principles for configuring the boards in the BBU3900 working in GO
mode.
Table 4-1Principles for configuring the boards in the BBU3900 in GO mode
Board Optional orMandatory
MaximumQuantity
Slot Remarks
GTMU Mandatory 1 Slots 5 and 6 It is configured
only in slot 6
(with both slots
5 and 6
occupied).
FAN Mandatory 1 Slot 16 It is configured
only in slot 16.
UPEU Mandatory 2 Slot 18 or 19 A single UPEU
is preferentially
configured in
slot 19.
USCU Optional 1 Slot 0 or 1 It is
preferentially
configured in
slot 1.
The 1 U GPS/
GLONASS
receiver is
configured in
slot 1 (with slots
0 and 1
occupied).
UTRP Optional 1 Slot 0 or 4 It is
preferentially
configured in
slot 4.
UEIU Optional 1 Slot 18 -
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Figure 4-5shows the typical configurations of the BBU3900 in GO mode.
Figure 4-5Typical configurations of the BBU3900 working in GO mode
BBU3900 Working in UO ModeTable 4-2describes the principles for configuring the boards in the BBU3900 working in UO
mode.
Table 4-2Principles for configuring the boards in the BBU3900 working in UO mode
Board Optional orMandatory
MaximumQuantity
Slot Remarks
WMPT Mandatory 2 Slot 6 or 7 A single WMPT
is preferentially
configured in
slot 7.
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Board Optional orMandatory
MaximumQuantity
Slot Remarks
WBBP Mandatory 6 Slots 0 to 5 It is configured
in slot 3 bydefault.
l If more
CPRI ports
are required,
the WBBP is
installed, in
descending
order of
priority, in
slot 3 or 2.
l If no more
CPRI ports
are required,
the WBBP is
installed, in
descending
order of
priority, in
slot 3, 0, 1, 2,
4, or 5.
If a WBBPd is
required, it is
installed, indescending
order of priority,
in slot 3 or 2.
If five or more
WBBPs are
required, ensure
that two WBBPs
are installed in
slots 2 and 3. At
least one of the
two WBBPs is
WBBPd.
FAN Mandatory 1 Slot 16 It is configured
only in slot 16.
UPEU Mandatory 2 Slot 18 or 19 A single UPEU
is preferentially
configured in
slot 19.
UEIU Optional 1 Slot 18 -
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Board Optional orMandatory
MaximumQuantity
Slot Remarks
UTRP Optional 4 Slot 0, slot 1,
slot 4, and slot 5
It is installed, in
descendingorder of priority,
in slot 4, 5, 0, or
1.
USCU Optional 1 Slot 1 or 0 The USCU is
preferentially
configured in
slot 1.
The 1 U GPS/
GLONASS
receiver is
configured inslot 1 (with slots
0 and 1
occupied).
Figure 4-6shows the typical configurations of the BBU3900 working in UO mode.
Figure 4-6Typical configuration of the BBU3900 in UO mode
BBU3900 Working in LO Mode
Table 4-3describes the principles for configuring the boards in the BBU3900 working in LO
mode.
Table 4-3Principles for configuring the boards in the BBU3900
Board Optional orMandatory
MaximumQuantity
Slot Remarks
LMPT Mandatory 2 Slot 6 or 7 A single LMPT
is configured in
slot 7.
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Board Optional orMandatory
MaximumQuantity
Slot Remarks
LBBP Mandatory 3 Slots 1 to 3 A single LBBP
is configured inslot 3, 1, or 2 in
descending
order of priority.
FAN Mandatory 1 Slot 16 Configured only
in slot 16
UPEU Mandatory 2 Slot 18 or 19 A single UPEU
is configured
only in slot 19.
UEIU Optional 1 Slot 18 -
UTRP Optional 1 Slot 4 or slot 5 It is
preferentially
configured in
slot 4.
USCU Optional 1 Slot 0, 1, 4, or 5 A single USCU
is preferentially
configured in
slot 5. A USCU
that occupies 1
U space is
configured in
slots 5 and 4.
If slots 4 and 5
are occupied, a
single USCU is
configured in
slot 1. In this
situation, a
USCU that
occupies 1 U
space is
configured in
slots 1 and 0.
Figure 4-7shows the typical configurations of the BBU3900 working in LO mode.
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Figure 4-7Typical configurations of the BBU3900 working in LO mode
BBU3900 Working in GU Mode
Table 4-4describes the principles for configuring the boards in the BBU3900 working in GU
mode.
Table 4-4Principles for configuring the boards in the BBU3900 working in GU mode
Board Optional orMandatory
MaximumQuantity
Slot Remarks
WMPT Mandatory 1 Slot 7 The WMPT can
be configured
only in slot 7.
GTMU Mandatory 1 Slots 5 and 6 It is configured
only in slot 6
(with slots 5 and6 occupied).
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Board Optional orMandatory
MaximumQuantity
Slot Remarks
WBBP Mandatory 5 Slots 0 to 4 It is configured
in slot 3 bydefault.
l If more
CPRI ports
are required,
the WBBP is
installed, in
descending
order of
priority, in
slot 3 or 2.
l If no more
CPRI ports
are required,
the WBBP is
installed, in
descending
order of
priority, in
slot 3, 2, 0, 1,
or 4.
If a WBBPd is
required, it is
installed, indescending
order of priority,
in slot 3 or 2.
If five or more
WBBPs are
required, ensure
that two WBBPs
are installed in
slots 2 and 3.
FAN Mandatory 1 Slot 16 Configured only
in slot 16
UPEU Mandatory 2 Slot 18 or 19 A single UPEU
can be
configured only
in slot 19.
UEIU Optional 1 Slot 18 -
UTRP Optional 2 Slots 0, 1, and 4 It is installed, in
descending
order of priority,
in slot 4, 0, or 1.
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Board Optional orMandatory
MaximumQuantity
Slot Remarks
USCU Optional 1 Slot 0 or 1 It is
preferentiallyconfigured in
slot 1.
The 1 U GPS/
GLONASS
receiver is
configured in
slot 1 (with slots
0 and 1
occupied).
UBRI Optional 1 Slot 2 In the
V100R003C01,the UBRI is
configured in
slot 2 or 1 in
descending
order of priority.
Figure 4-8shows the typical configurations of the BBU3900 working in GU mode.
Figure 4-8Typical configurations of the BBU3900 working in GU mode
BBU3900 Working in GL Mode
Table 4-5describes the principles for configuring the boards in the BBU3900 working in GL
mode.
Table 4-5Principles for configuring the boards in the BBU3900 working in GL mode
Board Optional orMandatory
MaximumQuantity
Slot Remarks
LMPT Mandatory 1 Slot 7 It is configured
only in slot 7.
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Board Optional orMandatory
MaximumQuantity
Slot Remarks
GTMU Mandatory 1 Slots 5 and 6 It is configured
only in slot 6(with slots 5 and
6 occupied).
LBBP Mandatory 3 Slots 1 to 3 It is configured
in slot 3, 1, or 2
in descending
order of priority.
FAN Mandatory 1 Slot 16 Configured only
in slot 16
UPEU Mandatory 2 Slot 18 or 19 A single UPEU
is configuredonly in slot 19.
UEIU Optional 1 Slot 18 -
UTRP Optional 2 Slot 0, 1, or 4 It is installed, in
descending
order of priority,
in slot 4, 0, or 1.
The slot priority
of the GO UTRP
is higher than
that of the LOUTRP
USCU Optional 1 Slot 0 or 1 The USCU is
preferentially
configured in
slot 1.
The 1 U GPS/
GLONASS
receiver is
configured in
slot 1 (with slots
0 and 1occupied).
UBRI Optional 1 Slot 2 In the
V100R003C01,
the UBRI is
configured in
slot 2 or 1 in
descending
order of priority.
Figure 4-9shows the typical configurations of the BBU3900 working in GL mode.
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Figure 4-9Typical configuration of the BBU3900 working in GL mode
BBU3900 Working in UL Mode
Table 4-6describes the principles for configuring the boards in the BBU3900 working in UL
mode.
Table 4-6Principles for configuring the boards in the BBU3900 working in UL mode
Board Optional orMandatory
MaximumQuantity
Slot Remarks
LMPT Mandatory 1 Slot 6 It is configured
only in slot 6.
WMPT Mandatory 1 Slot 7 It is configured
only in slot 7.
LBBP Mandatory 5 Slot 0, 1, 2, 4, or
5
A single LBBP
is configured
only in slot 2. If
more LBBPs are
required, the
LBBP is
installed, in
descending
order of priority,
in slot 2, 0, 1, 4,
or 5.
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Board Optional orMandatory
MaximumQuantity
Slot Remarks
WBBP Mandatory 4 Slot 0, 1, 3, 4, or
5
A single WBBP
is configuredonly in slot 3. If
more LBBPs are
required, the
WBBP is
installed, in
descending
order of priority,
in slot 3, 0, 1, 4,
or 5.
If a WBBPd is
required, it is
configured onlyin slot 3.
FAN Mandatory 1 Slot 16 Configured only
in slot 16
UPEU Mandatory 2 Slot 18 or 19 A single UPEU
is configured
only in slot 19.
UEIU Optional 1 Slot 18 -
UTRP Optional 2 Slot 4 or slot 5 It is
preferentiallyconfigured in
slot 4.
The slot priority
of the UO UTRP
is higher than
that of the LO
UTRP.
USCU Optional 1 Slot 4 or slot 5 It is
preferentially
configured in
slot 4.
Figure 4-10shows the typical configurations of the BBU3900 working in UL mode.
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Figure 4-10Typical configuration of the BBU3900 working in UL mode
GTMU
The GSM Transmission &Timing & Management Unit for BBU (GTMU) is the basic
transmission and control function entity of the BBU. It provides the reference clock, maintenanceport, and external alarm collection port, monitors the power, control and manage the entire BTS.
Specifications of the GTMU
The GTMU is classified into two types: GTMU and GTMUb. Table 4-7lists the specifications
of the GTMU and GTMUb.
Table 4-7Specifications of the GTMU
Board Mode Transmission Mode
Port PortCapacity
Full/Half-Duplex
GTMU/GTMUb
GSM TDM over E1/T1
1 Four channels
Full-duplex
Transmissio
n over FE/
GE optical
cable
1 10 Mbit/s
and 100
Mbit/s
Full-duplex
Transmissio
n over FE/
GE electrical
cable
1 10 Mbit/s
and 100
Mbit/s
Full-duplex
Panel
Figure 4-11and Figure 4-12show the panels of the GTMU and GTMUb.
Figure 4-11GTMU panel
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Figure 4-12GTMUb panel
Functions
The GTMU performs the following functions:
l Controls, maintains, and operates the base station.
l Supports fault management, configuration management, performance management, and
security management.
l Monitors the fans and power modules.
l Provides and manages the clock source of the base station in centralized mode.
l Provides the clock output for test.
l Provides the FE port for maintenance on the OM system.
l Supports transmission through four E1s and two FEs.
l Provides CPRI ports for communication between the BBU and the RF units.
Indicator
Table 4-8describes the indicators on the GTMU.
Table 4-8Indicators on the GTMU
Indicator Color Status Description
RUN Green Steady on The board is faulty.
Steady off There is no power supply, or the
board is faulty.
On for 1s and off for
1s
The board is running properly.
On for 2s and off for
2s
The base station is disconnected
from the base station controller.
On for 0.125s and off
for 0.125s
Software is being upgraded or
loaded from the USB flash
drive.
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Indicator Color Status Description
ALM Red Steady on An alarm is generated,
indicating a fault.
Steady off There is no fault.
ACT Green Steady on The board works in the active
state.
Steady off The board works in the standby
state.
Besides the preceding three indicators, there are some other indicators on the board, which are
used for indicating the connection status of the FE optical port, FE electrical port, CPRI port,
commissioning Ethernet port. They are near the corresponding ports and have no silkscreen.Table 4-9describes the indicators.
Table 4-9Indicators for ports
Indicator Color Status Description
LIU0 to LIU3 Green Steady on The link is in the idle
state or a local alarm
is generated.
On for 1s and off for
1s
An E1/T1 remote
alarm is generated.
Steady off The link is
functional.
CPRI0 to CPRI5 Red/green Steady green The inter-BBU
transmission link is
normal.
Steady red An optical module
fails to receive
signals because the
optical module is
faulty or the fiberoptic cable is broken.
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Indicator Color Status Description
Blinking red (on for
1s and off for 1s)
The interconnection
link is out of lock
because there ismutual lock between
the BBU cases or
mismatched data rate
over QSFP ports.
You are advised to
check the system
configuration to
locate the fault.
Steady off The QSFP module
cannot be detected,
or the optical moduleis powered off.
ETH Green (LINK
indicator on the left)
Steady on The connection is set
up successfully.
Steady off No connection is set
up.
Orange (ACT
indicator on the
right)
Blinking Data is being
transmitted or
received.
Steady off No data is beingtransmitted or
received.
FE0 Green (LINK
indicator on the left)
Steady on The connection is set
up successfully.
Steady off No connection is set
up.
Orange (ACT
indicator on the
right)
Blinking Data is being
transmitted or
received.
Steady off No data is being
transmitted or
received.
FE1 (on the
GTMUb)
Green (LINK
indicator on the left)
Steady on The connection is set
up successfully.
Steady off No connection is set
up.
Green (ACT
indicator on the
right)
Blinking Data is being
transmitted or
received.
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Indicator Color Status Description
Steady off No data is being
transmitted or
received.M_S (on the
GTMUb)
- - This is the indicator
for the reserved port.
EXT (on the
GTMUb)
- - This is the indicator
for the reserved port.
Port
Table 4-10describes the ports on the GTMU.
Table 4-10Ports on the GTMU
Silkscreen Connector Description
CPRI0 to CPRI5 SFP female
connector
Data transmission port interconnected to the RFU.
It supports the input and output of optical and
electrical transmission signals.
EXT (on the
GTMUb)
SFP female
connector
Reserved
ETH RJ45 connector Local maintenance and commissioning port
FE0 RJ45 connector Connected to the routers in the equipment room
through FE cables to transmit network
information
FE1 DLC connector Connected to the routers in the equipment room
through optical cables to transmit network
information
USB USB connector Used for automatic software upgrade through the
USB disk
TST USB connector Providing reference clock for the test instruments
E1/T1 port DB26 female
connector
Used for four E1/T1 inputs and outputs between
the GTMU and the UELP or between BSCs
The RSTbutton on the panel of the GTMU is used for resetting the board.
DIP Switch
On the GTMU, there are five DIP switches, each of which has four bits. DIP switches S1andS2need to be set jointly. The functions of the five DIP switches are as follows:
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l S1is used to set the E1 resistance. Table 4-11provides details on the DIP switch.
l S2is used to set the grounding mode of E1/T1 transmission cables. Table 4-12provides
details on the DIP switch.
l S3is reserved.
l S4is used to determine whether to enable E1 bypass. Table 4-13provides details on the
DIP switch.
l S5is used for timeslot settings when the E1 bypass is selected. Table 4-14provides details
on the DIP switch.
Table 4-11Description on S1
DIPSwitch
DIP Status Description
1 2 3 4
S1 ON ON OFF OFF The E1 resistance is set to
75 ohm.
OFF ON OFF OFF The E1 resistance is set to
120 ohm.
ON OFF OFF OFF The T1 resistance is set to
100 ohm.
Others Unavailable
NOTE
Bits 3 and 4 of S1should be kept the factory settings, without any manual setting onsite. The out-of-factory
state should be OFF. If the bits are ON, set them to OFF.
Table 4-12Description on S2
DIPSwitch
DIP Status Description
1 2 3 4
S2 OFF OFF OFF OFF All the bits are set to
OFF by default in all
modes.
ON ON ON ON When the four E1 RX
links in 75 ohm have
errors, all the bits of S2
must be set to ON to
rectify the faults on the
E1 links.
Others Unavailable
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Table 4-13Description on S4
DIPSwitch
DIP Status Description
1 2 3 4
S4 ON ON ON ON Supporting E1 bypass
OFF OFF OFF OFF Not supporting E1
bypass
Others Unavailable
Table 4-14Description on S5
DIP
Switch
DIP Status Description
1 2 3 4
S5 ON ON ON ON Not supporting E1
bypass
OFF ON ON OFF Supporting E1 bypass
for two cascaded base
stations
ON OFF ON OFF Supporting E1 bypass
for three cascaded base
stations
OFF OFF ON OFF Supporting E1 bypass
for four cascaded base
stations
ON ON OFF OFF Supporting E1 bypass
for five cascaded base
stations
OFF ON OFF OFF Supporting E1 bypass
for six cascaded base
stations
WMPT
The WCDMA main processing & transmission unit (WMPT) processes signals for the BBU3900
and manages resources for other boards in the BBU3900.
Specifications of the WMPT
Table 4-15lists the transmission capabilities of the WMPT.
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Table 4-15Transmission capabilities of the WMPT
Board TransmissionMode
Port Port Capacity Full/Half-Duplex
WMPT ATM over E1/T1 or IP over
E1/T1
1 Four channels Full-duplex
Transmission
over FE/GE
optical cable
1 100 Mbit/s and
1000 Mbit/s
Full-duplex
Transmission
over FE/GE
electrical cable
1 100 Mbit/s and
1000 Mbit/s
Full-duplex
Panel
Figure 4-13shows the WMPT.
Figure 4-13WMPT
Functions
The WMPT performs the following functions:
l Performs OM functions such as configuration management, equipment management,
performance monitoring, signaling processing, and active and standby switchover, and
providesOM channel to communicate with the LMT or M2000.
l Provides reference clock for the system.
l Processes signaling and manages resources for other boards in the BBU3900.
l Provides USB ports. A USB flash drive that stores required software and configuration data
can be inserted into the USB port to perform the automatic base station upgrade.
l Provides a 4-channel E1 port over ATM or IP.
l Provides an FE electrical port and an FE optical port over IP.
Indicator
Table 4-16describes the indicators on the WMPT panel.
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Table 4-16Indicators on the WMPT panel
Silkscreen Color Status Description
RUN Green Steady on There is power
supply, but the boardis faulty.
Steady off There is no power
supply.
On for 1s and off for
1s
The board is
functioning properly
according to the
configuration.
On for 0.125s and off
for 0.125s
The board is being
loaded or configured,
the board is notstarted, or the board
is running properly.
ALM Red Steady off There is no fault.
Steady on A hardware alarm is
generated on the
board.
ACT Green Steady on The board serves as
an active board.
Steady off The board serves as astandby board.
In addition to the preceding three indicators, there are six indicators on the board, which indicate
the connection status of the FE optical port, FE electrical port, and debugging port. The six
indicators do not have silkscreen on the WMPT panel, whereas they are at both sides of the
corresponding ports, as shown in Figure 4-14.
Figure 4-14Indicators for the ports on the WMPT
Table 4-17lists the indicators on the board.
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Table 4-17Ports and Indicators
Indicator Color Status Description
Indicators for the
FE1 optical port
Green (LINK) Steady on The connection is set
up successfully.
Steady off No connection is set
up.
Green (ACT) Blinking Data is being
transmitted or
received.
Steady off No data is being
transmitted or
received.
Indicators for theFE0 electrical port
Green (LINK) Steady on The connection is setup successfully.
Steady off No connection is set
up.
Yellow (ACT) Blinking Data is being
transmitted or
received.
Steady off No data is being
transmitted or
received.
Indicators for the
ETH port
Green (LINK) Steady on The connection is set
up successfully.
Steady off No connection is set
up.
Yellow (ACT) Blinking Data is being
transmitted or
received.
Steady off No data is being
transmitted or
received.
Port
Table 4-18describes the ports on the panel of the WMPT.
Table 4-18Ports on the panel of the WMPT
Silkscreen Connector Description
E1/T1 port DB26 connector E1/T1 port
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Silkscreen Connector Description
FE0 RJ45 connector FE electrical port
FE1 SFP connector FE optical port
GPS SMA connector Reserved
ETH RJ45 connector Commissioning
USB USB connector USB loading port
TST USB connector USB commissioning port
RST - Reset button
DIP Switch
The WMPT has two DIP switches. SW1 is used to set the work mode of the E1/T1 signal cable,
and SW2 is used to set the resistance of the four E1/T1 signal cables in different modes. Figure
4-15shows the DIP switch settings of the WMPT.
Figure 4-15DIP switch settings of the WMPT
Table 4-19and Table 4-20list the DIP switch settings of the WMPT.
Table 4-19Settings of the DIP switch SW1 on the WMPT
DIPSwitch
DIP Status Description
1 2 3 4
SW1 ON ON OFF OFF T1
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DIPSwitch
DIP Status Description
1 2 3 4
OFF OFF ON ON The E1
resistance isset to 120
ohm.
ON ON ON ON The E1
resistance is
set to 75 ohm.
Others Unavailable
Table 4-20Settings of the DIP switch SW2 on the WMPT
DIPSwitch
DIP Status Description
1 2 3 4
SW2 OFF OFF OFF OFF Balanced
ON ON ON ON Unbalanced
Others Unavailable
LMPT
The LTE main processing & transmission unit (LMPT) manages the entire eNodeB system in
terms of O&M and signaling processing and provides system clock for the BBU3900.
Specifications of the LMPT
Table 4-21lists the specifications of the LMPT.
Table 4-21Specifications of the LMPT
Board Mode Transmission Mode
Port PortCapacity
Full/Half-Duplex
LMPT LTE Transmissio
n over FE/
GE optical
cable
2 10 Mbit/s,
100 Mbit/s,
and 1000
Mbit/s
Full-duplex
Transmissio
n over FE/
GE electrical
cable
2 10 Mbit/s,
100 Mbit/s,
and 1000
Mbit/s
Full-duplex
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Panel
Figure 4-16shows the LMPT.
Figure 4-16LMPT
Functions
The LMPT has the following functions:
l Enabling configuration management, device management, performance monitoring,
signaling processing, and radio source management
l Controls all boards in the system
l Providing the system clock
l Enabling signal exchange between the eNodeB and MME/S-GW
Indicator
There are three LEDs on the panel of the LMPT. Table 4-22describes the LEDs on the LMPT.
Table 4-22LEDs on the panel of the LMPT
Identifier Color Status Description
RUN Green Steady on There is power supply, but
the board is faulty.
Steady off There is no power supply,
or the board is faulty.
On for 1s and off
for 1s
The board is running
properly.
On for 0.125s and
off for 0.125s
The board is being loaded,
the board is not started, or
the board is running
properly.
ALM Red Steady on An alarm is reported,
indicating a fault in the
board.
Steady off The board is working
properly.
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Identifier Color Status Description
On for 1s and off
for 1s
An alarm is generated, and
the alarm may be caused by
an associated board or portfault. Therefore, you must
locate the fault before
replacing the board.
ACT Green Steady on The board serves as an
active board.
Steady off The board serves as a
standby board.
On for 0.125s and
off for 0.125s
The OML link is
disconnected.
On for 1s and off
for 1s
The board is being tested,
such as an RRU Voltage
Standing Wave Ratio
(VSWR) test through a
USB disk. When an
upgrade through a USB
disk is implemented, the
ACT LED does not blink.
Besides the preceding three LEDs, some other LEDs used for indicating the connection statusof the FE optical port, FE electrical port, commissioning Ethernet port have no silkscreen on the
board. They are near the ports. Table 4-23describes the LEDs.
Table 4-23Ports and LEDs
Identifier Color Status Description
SFP0 and SFP1 Green (LINK) Steady on The connection is set
up successfully.
Steady off No connection is set
up.
Orange (ACT) Blinking Data is being
transmitted or
received.
Steady off No data is being
transmitted or
received.
ETH Orange (ACT) Blinking Data is being
transmitted or
received.
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Identifier Color Status Description
Steady off No data is being
transmitted or
received.Green (LINK) Steady on The connection is set
up successfully.
Steady off No connection is set
up.
FE/GE0 to FE/GE1 Green (LINK) Steady on The connection is set
up successfully.
Steady off No connection is set
up.
Orange (ACT) Blinking Data is beingtransmitted or
received.
Steady off No data is being
transmitted or
received.
Port
Table 4-24describes the ports on the panel of the LMPT.
Table 4-24Ports on thepanel of the LMPT
Identifier Connector Quantity Purpose
SFP0 and SFP1 LC 2 FE/GE optical port
connecting to the
transmission
equipment or gateway
equipment
USB USB 1 Software loading
TST USB 1 Test port
ETH RJ45 connector 1 Commissioning
FE/GE0 to FE/GE1 RJ45 connector 2 FE/GE electrical port
connecting to the
transmission
equipment or gateway
equipment
GPS SMA connector 1 GPS port
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Identifier Connector Quantity Purpose
RST - 1 Resetting the
BBU3900
NOTE
SFP0 and FE/GE0 ports on the LMPT are used for one GE input. Therefore, they are not used
simultaneously.
SFP1 and FE/GE1 ports on the LMPT are used for another GE input. Therefore, they are not used
simultaneously.
WBBP
The WCDMA BaseBand Processing Unit (WBBP) in the BBU3900 processes baseband signals.
Panel
The WBBP has three types of panels, as shown in Figure 4-17, Figure 4-18, and Figure 4-19.
Figure 4-17Panel of the WBBPa
Figure 4-18Panel of the WBBPb
Figure 4-19Panel of the WBBPd
Functions
The WBBP performs the following functions:
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l Provides CPRI ports for communication with RF modules, and supports CPRI ports in 1
+1 backup mode.
l Processes uplink and downlink baseband signals.
l The WBBPd supports interference cancellation (IC) within the board.
l The WBBPd installed in slot 2 or slot 3 supports the IC function of uplink data.
Table 4-25describes the specifications of the WBBP.
NOTE
The baseband board in slot 2 or slot 3 could transfer the received CPRI data to other boards.
Table 4-25Specifications of the WBBP
Board Number ofCells
Number of ULCEs
Number of DLCEs
BasebandTransferCapacity
WBBPa 3 128 256 N/A
WBBPb1 3 64 64 Twelve 1T2R
cells
WBBPb2 3 128 128 Twelve 1T2R
cells
WBBPb3 6 256 256 Twelve 1T2R
cells
WBBPb4 6 384 384 Twelve 1T2R
cells
WBBPd1 6 192 192 Twelve 1T2R
cells
WBBPd2 6 384 384 Twelve 1T2R
cells
WBBPd3 6 256 256 Twelve 1T2R
cells
Indicator
There are three indicators on the panel of the WBBP. Table 4-26describes the indicators on the
WBBP and their status.
Table 4-26Indicators on the panel of the WBBP and their status
Silkscreen Col