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Huawei Technologies Co., Ltd. provides customers with comprehensive technical support and service.Please feel free to contact our local office or company headquarters.
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]
Copyright Huawei Technologies Co., Ltd. 2008. All rights reserved.
No part of this document may be reproduced or transmitted in any form or by any means without priorwritten 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 respectiveholders.
Notice
The information in this document is subject to change without notice. Every effort has been made in thepreparation of this document to ensure accuracy of the contents, but all statements, information, andrecommendations in this document do not constitute the warranty of any kind, express or implied.
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Contents
1 Overview..........................................................................................................................4
2 System Architecture .......................................................................................................9
3 Products and Corresponding Application Scenarios................................................26
4 Features.........................................................................................................................33
5 Operation and Maintenance.........................................................................................39
6 Reliability.......................................................................................................................43
7 Technical Specifications ..............................................................................................46
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1 Overview1.1 Introduction
With the mobile communication technology developing on a daily basis, it is no doubtthat the operators, during network construction and partner selection, will focus theirattention on innovation and integration of multiple advanced technologies forconstructing a cost-effective and future-oriented mobile network.
Upholding the idea of continuous innovation based on customer requirements,Huawei developed the 3900 series NodeB through integration of multiple radioresources and technologies. The 3900 series NodeBs, integrating the latest Huaweitechnologies in chip design, system architecture, Power Amplification (PA) and powerconsumption management, provide NodeB solutions for the future-oriented mobilenetwork.
During the transition of mobile networks, the 3900 series NodeBs, characterized byintegration, broadband, environment protection, evolution, will help operatorsconstruct a future-oriented mobile network with higher performance.
The 3900 series NodeBs have a cutting-edge modular design, thus compatible withfunctional modules of different network systems. With simply three types of units, the3900 series NodeBs feature small size, high integration, low power consumption,easy and fast deployment.
The innovative design and flexible combinations of the functional modules andauxiliary devices lead to the diversity of NodeB products. The operators can installboards of different network systems in one cabinet to form a NodeB that applies todifferent scenarios. This accelerates the introduction of new radio networktechnologies and complies with the development trend of the mobile network towardsintegration of different network systems.
The 3900 series NodeBs, based on IP switch and multi-carrier technologies, supportthe bandwidth of 100 M. This ensures a high data transmission rate for users during
mobile data service expansion.
The optimized hardware and system architecture of the 3900 series NodeBs, togetherwith the innovative conservation technologies for the PA and power consumptionmanagement, enable the operators to construct a green communication networkthrough new devices, temperature regulation, and green energy resource utilization.
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1.2 Products and ApplicationsThe 3900 series NodeBs basically comprise the following three units:
The indoor baseband processing unit BBU3900
The indoor radio frequency unit WRFU
The outdoor Remote Radio Unit (RRU)
Flexible combinations of the three units and auxiliary devices can provide differentNodeBs that apply to different scenarios such as indoor centralized installation,outdoor centralized installation, outdoor distributed installation, site sharing of multiplenetwork systems. Figure 1-1 shows the three units and auxiliary devices and Figure1-2 shows the different application scenarios.
Figure 1-1 Units and auxiliary devices of the 3900 series NodeBs
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Figure 1-2 Application scenarios of the 3900 series NodeBs
Different combinations of the units and auxiliary devices form the following 3900series NodeBs:
Cabinet macro NodeB
The cabinet macro NodeB, integrating the BBU3900 and the WRFU, consists ofthe indoor BTS3900 and the outdoor BTS3900A. The cabinet macro NodeB
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applies to centralized installation, where the BTS3900 and the BTS3900A, asmentioned above, are recommended for indoor application and outdoorapplication respectively.
Distributed NodeB
The distributed NodeB, known as the DBS3900, consists of the BBU3900 and the
RRU. For the distributed installation, the RRU is placed close to the antenna. Thiscan reduce feeder loss and improve NodeB performance.
Compact mini NodeB
The compact mini NodeB BTS3900C is applicable to both indoor and outdoorenvironments. It can be installed on the pole, wall, or ground. When it is installedon the ground, a stand or other kind of support is required.
1.3 BenefitsThe 3900 series NodeBs adopt a uniform modular design for multiple radio networksystems, thus adaptive to various installation scenarios. This greatly reduces the
costs in network deployment and operations, such as site acquisition, capacity andcoverage expansion, and environment protection. The 3900 series NodeBs enablethe construction of a future-oriented network and smooth evolution to the Long TermEvolution (LTE).
1.3.1 Fast Network Deployment and Efficient Site Utilization
The 3900 series NodeBs support both centralized and distributed installations, whichsimplifies network deployment and facilitates cost-effective network constructions indifferent scenarios.
The BBU3900 can be installed in a 2-U-high and 19-inch-wide indoor space or aprotective outdoor cabinet while the RRU can be installed close to the antenna andhas no footprint.
The cabinet macro NodeB is one of the most compact NodeBs of thetelecommunication industry, because it has a very small footprint. The footprint of theBTS3900 is 600 mm x 450 mm while that of the BTS3900A is 600 mm x 480 mm.
1.3.2 Cost-Effective Capacity and Coverage Solution
The 4-carrier RRU3804 can generate 60 W power, which is the highest output powerof the Wideband Code Division Multiple Access (WCDMA) RRU in thetelecommunication industry. This outstanding performance ensures wider coverage,higher throughput, and smaller quantity of sites.
The RRU3804 can stay close to the antenna and communicate with the BBU3900through optical cables, thus avoiding feeder loss. With the same power and system
capacity, lower feeder loss denotes wider system coverage or smaller quantity of sitesunder the fixed coverage.
1.3.3 Construction of a Green Communication Network
Compact and modular design, innovative PA and power consumption managementare the keys to a green communication network that features energy conservation andrequires less equipment rooms.
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RF units of the 3900 series NodeBs adopt the Digital Pre-Distortion (DPD) andA-Doherty technologies to raise the PA rate to 40%. Thus, the power consumption ofthe entire NodeB is lowered.
The RF cabinet of the BTS3900A is a direct-ventilation cabinet. In comparison to thetraditional macro NodeB, equipment power consumption is lowered by 40%.
The reduced power consumption not only avoids extra electricity expense but alsolessens the investment in power supply, backup batteries, air conditioner, and heatexchanger.
1.3.4 Minimized Operation Cost
The baseband units, RF units, and power systems of the BTS3900 and DBS3900 fitall NodeB site types, thereby saving the logistics cost during manufacturing andtransportation and the future maintenance cost.
The 3900 series NodeBs are characterized by separate baseband and RF units,compact design, and distributed installation. All these features facilitate thetransportation and installation and make network constructions less complicated and
less expensive. For example, special tools such as a crane are dispensable.The RRU works in natural heat dissipation and has no fans. Its high reliability reducesthe routine maintenance cost.
1.3.5 Easy Evolution to the Future Radio Network
The uniform modular design of the3900 series NodeBs enables the GSM BTS andUMTS NodeB to share the same cabinet. This facilitates the evolution to the futureradio network and introduction of new radio technologies.
The WCDMA RF unit supports HSPA+ and smooth evolution to the LTE. This realizesthe future-oriented network investment.
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2 System Architecture2.1 Introduction
The 3900 series NodeBs feature modular design. The baseband processing unitBBU3900 and the RF unit (RRU and WRFU) that are connected through the CommonPublic Radio Interface (CPRI) optical cable provide solutions for the WCDMA networkconstruction.
The 3900 series NodeBs basically comprise three units, the baseband processing unitBBU3900, the indoor RF unit WRFU, and the outdoor RRU. Auxiliary devices for the3900 series NodeBs include the APM, indoor macro cabinet, outdoor RF cabinet, andoutdoor mini cabinet. Flexible combinations of the three units and auxiliary devicescan provide comprehensive NodeB site solutions that apply to different scenarios.
2.2 BBU3900
2.2.1 Physical Structure of the BBU3900The BBU3900, with a box structure, is 19 inches in width and 2 U in height. It can beinstalled in an indoor 19-inch-wide and 2-U-high space or an outdoor protectivecabinet. Figure 2-1 shows the physical structure of the BBU3900.
Figure 2-1 Physical structure of the BBU3900
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The 2-U-high space of the BBU3900 integrates the functions such as main control,baseband processing, and transmission. The BBU3900 supports multipleconfigurations, ranging from 1x1 to 6x4 and the configuration of 3x8.
2.2.2 Logical Structure of the BBU3900
The BBU3900 has a modular design. According to the function of each module, it canbe divided into the following subsystems:
Transport subsystem
Baseband subsystem
Control subsystem
Power monitoring module
Figure 2-2 shows the logical structure of the BBU3900.
Figure 2-2 Logical structure of the BBU3900
Transport Subsystem
The transport subsystem provides ports to exchange information between the BBUand the Radio Network Controller (RNC).
In addition, the transport subsystem provides maintenance channels between theBBU and the Operation and Maintenance Centre (OMC), that is, the LocalMaintenance Terminal (LMT) or M2000 for BBU Operation and Maintenance (OM).
Baseband Subsystem
The baseband subsystem processes both Uplink (UL) and Downlink (DL) basebandsignals. The functions of the subsystem are performed by the following modules:
UL baseband signal processing module
The UL baseband signal processing module consists of the demodulation unitand the decoding unit. In this module, uplink baseband signals are processed
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into despreading soft decision symbols after access channel searching,access channel demodulation, and dedicated channel demodulation. Thesignals are then sent to the RNC through the transport subsystem afterdecoding and FP processing.
DL baseband signal processing module
The DL baseband signal processing module consists of the modulation unitand the coding unit. Before sending signals received from the transportsubsystem to the optical module, the module sends service data received fromthe transport subsystem to the Frame Protocol (FP) processor. After FPprocessing, the module processes the signals through transmission channelmapping, physical channel generating, framing, spreading, demodulating,transmit diversity control, and power control combination. The module finallysends the processed signals to the interface module.
The CPRI module is integrated in the baseband subsystem of the BBU3900.
Control Subsystem
The control subsystem manages the entire distributed NodeB. The subsystem
performs OM, processes signaling, and provides system clocks.
The OM module performs functions such as equipment management, configurationmanagement, alarm management, software management, and commissioningmanagement.
The signaling processor performs functions such as the NodeB Application Part(NBAP) signaling processing, the Access Link Control Application Part (ALCAP)processing, the Stream Control Transmission Protocol (SCTP) processing, and thelogical resource management.
The clock sources of the NodeB consist of the phase-locked line clock extracted fromthe Iub interface, the Global Positioning System (GPS) clock, and the external clocksuch as the Building Integrated Timing Supply (BITS) clock. The BBU extracts the
clock from the Iub interface and provides the clock for the entire NodeB afterfrequency dividing, phase locking, and phase adjusting in the clock module.
Power Monitoring Module
The power monitoring module converts the 48 V DC power to suitable power for theboards. In addition, it provides the monitoring signal input port.
2.2.3 Boards and Funtional Units of the BBU3900
The BBU3900 consists of different functional units and boards such as the WCDMAMain Processing & Transmission (WMPT) unit, the Universal Environment InterfaceCard (UEIC), the Universal Fan module (UFAN), the Universal Power andEnvironment interface Unit (UPEU), as shown in Figure 2-3. The boards supportplug-and-play functions and can be configured as required.
Optional boards of the BBU3900 consist of the Universal E1/T1 Lightning Protection(UELP) unit, the Universal FE Lightning Protection (UFLP) unit, the Universal Satellitecard and Clock Unit (USCU), the Universal TRansmission Processing (UTRP) unit,and the Universal Environment Interface Unit (UEIU).
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Figure 2-3 Boards of the BBU3900
WMPT
The WMPT is mandatory for the BBU3900 and one BBU3900 holds up to twoWMPTs for redundancy. The WMPT functions as follows:
Processes clock signals and provides reference clock for the NodeB
Provides OM management for the NodeB
Provides 4 E1/T1 ports, one electric Fast Ethernet (FE) port, and one opticalFE port to support the Asynchronous Transfer Mode (ATM) and InternetProtocol (IP).
Provides one USB port to download and activate the host software
Processes signaling and manages resources
WBBP
The WBBP is mandatory for the BBU3900 and one BBU3900 holds up to sixWBBPs. According to processing capability, the WBBP can be categorized intofive types and functions as follows:
Processes signals on the CPRI interface between the BBU and the RRU
Processes baseband signals in the UL and DL
Supports High Speed Downlink Packet Access (HSDPA) and High SpeedUplink Packet Access (HSUPA)
Supports CPRI ports in 1+1 redundancy
UFAN
The UFAN is used to control the fan speed and monitors the working temperaturefor the fan.
UPEU
The UPEU is the power supply unit and one BBU3900 can be configured with upto two UPEUs that work in 1+1 backup mode. The UPEU functions as follows:
Converts the 48 V DC power into the power required by the boards
Provides two RS485 monitoring ports
Provides 8 dry contact alarm ports
2.2.4 Ports on the BBU3900Table 2-1 Ports on BBU3900 boards
Board Port Quantity Connector Remarks
WMPT E1/T1 port 1 DB26 One port has fourE1 inputs.
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Board Port Quantity Connector Remarks
FE electrical port 1 RJ45 -
FE optical port 1 SFP -
USB loading port 1 USB Software loadingUSB test port 1 USB Test port
Serial port forcommissioning
1 RJ45 Localmaintenance forthe NodeB
GPS port 1 SMA -
WBBP CPRI 3 SFP -
PWR 1 3W3 48 V DC powerinput and +24 VDC power input
MON0 1 RJ45
MON1 1 RJ45
Provides twoRS485 monitoringsignal inputs andconnects to theexternal alarmdevice
EXT-ALM0 1 RJ45
EXT-ALM1 1 RJ45
UPEU
EXT-ALM2 1 RJ45
Provides eight drycontact alarminputs andconnects to theexternal alarmdevice
Table 2-2 Physical ports on optional boards of the BBU3900
Board Port Quantity Connector Remarks
INSIDE 1 DB25 Four E1/T1 signal input portsUELP
OUTSIDE 1 DB25 Four E1/T1 signal output ports
FE0 and FE1(INSIDE)
2 RJ45 Connects to the NodeBUFLP
FE0 and FE1(OUTSIDE)
2 RJ45 Connects to the externaldevices. The FE0 (OUTSIDE)connects to FE0 (INSIDE) andthe FE1 (OUTSIDE) connectsto the FE1 (INSIDE).
RGPS port 3 DB8 Connects to the RGPS signalcable
USCU
BITS port 1 SMA Connects to the BITS clock
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Board Port Quantity Connector Remarks
Clock test port 1 SMA Port for testing clock signaloutput
Antenna port
for thesatellite card
1 SMA RF signal input terminal of the
satellite card
UTRP E1/T1 port
2 DB26 Provides eight ports thatsupport ATM over E1 or IPover E1
MON 1 RJ45
MON1 1 RJ45
Connects to the externalmonitoring device
EXT-ALM0 1 RJ45
EXT-ALM1 1 RJ45
Connects to the external alarmdevice
UEIU
Specifications: The UEIU is a monitoring and dry contact extensionboard for the UPEU.
2.3 RRU
2.3.1 RRU Type
According to different processing capabilities, the RRU is of two types: the RRU3804and the RRU3801E.The RRU3804 and the RRU3801E have the same physical
structure, size, weight, ports, and logical structure, but differ in specifications.
Table 2-3 RRU type
RRU Type RRU3804
RRU3801E
Maximum output power 60 W 40 W
Number of carriers supported Four Two
2.3.2 Physical Structure of the RRU
The RRU can be installed outdoors close to the antenna. Figure 2-4 shows thephysical structure of the RRU.
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Figure 2-4 Physical structure of the RRU
2.3.3 Logical Structure of the RRU
The RRU supports 4-way receive diversity through connection with the SRXU. TheSRXU receives RF signals from the antenna system, down-converts the receivesignals to Intermediate Frequency (IF) signals after amplification, analog-to-digitalconversion, digital down-conversion, matched f iltering, and Digital Automatic GainControl (DAGC). Figure 2-5 shows the logical structure of the RRU.
Figure 2-5 Logical structure of the RRU
Interface module
The interface module receives downlink baseband data from the BBU, transmitsuplink baseband data to the BBU, and forwards data from the cascaded RRUs.
TRX
The TRX has two RX channels and one TX channel for RF signals.
The RX channel down-converts the receive signals into Intermediate Frequency(IF) signals and performs amplification, analog-to-digital (A/D) conversion, digitaldown-conversion, matched filtering, and DAGC.
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The TX channel performs shape filtering of downlink spreading signals,digital-to-analog (D/A) conversion, and up-conversion of RF signals into transmitband signals.
PA
The PA implements the DPD and A-Doherty technologies to amplify low-power
RF signals from the TRX. Duplexer
The duplexer multiplexes receive signals and transmit signals, which enables thereceive signals and transmit signals to share the same antenna path. Theduplexer also filters receive signals and transmit signals.
LNA
The LNA amplifies the signals received from antennas.
2.3.4 Ports on the RRU
The RRU has a modular structure. The external ports of the RRU are located at thebottom of the module and in the cabling cavity. Ports on the RRU include grounding
ports, power supply ports, transmission ports, alarm ports, and other ports.
Table 2-4 Ports on the RRU
Port Connector Quantity Remarks
48 V DC power supply
port
OT terminal 1 Power port
Optical port ESFP socket 2 Optical port
Two dry contact alarmports and one RS485port
DB15 1 Alarm port
Main TX/RX port DIN, round, andwaterproof
1
RX diversity port DIN, round, andwaterproof
1
Port for interconnection 2W2 1
RF port
2.4 WRFU
2.4.1 WRFU Type
According to different processing capabilities, the WCDMA Radio Filter Unit (WRFU)is of two types, the 40 W WRFU and the 80 W WRFU. The two types of WRFU havethe same physical structure, size, weight, ports, and logical structure, but differ inspecifications.
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Table 2-5 Specifications of the WRFU
WRFU Type 80 W WRFU
40 W WRFU
Maximum output power 80 W 40 W
Number of carriers supported Four Two
2.4.2 Physical Structure of the WRFU
The 80 W WRFU supports four carriers and applies to the indoor cabinet or outdoorprotective cabinet. Figure 2-6 shows the physical structure of the WRFU.
Figure 2-6 Physical structure of the WRFU
2.4.3 Logical Structure of the WRFU
Figure 2-7 Logical structure of the WRFU
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Interface module
The interface module receives downlink baseband data from the BBU, transmitsuplink baseband data to the BBU, and forwards data from the cascaded RRUs.
TRX
The TRX has two RX channels and one TX channel for RF signals.
The RX channel down-converts the received signals into Intermediate Frequency(IF) signals and performs amplification, analog-to-digital (A/D) conversion, digitaldown-conversion, matched filtering, and Digital Automatic Gain Control (DAGC).
The TX channel performs shape filtering of downlink spreading signals,digital-to-analog (D/A) conversion, and up-conversion of RF signals into transmitband.
PA
The PA implements the DPD and A-Doherty technologies to amplify low-powerRF signals from the TRX.
Duplexer
The duplexer multiplexes receive signals and transmit signals, which enables thereceive signals and transmit signals to share the same antenna path. Theduplexer also filters receive signals and transmit signals.
LNA
The LNA amplifies the signals received from antennas.
2.4.4 Ports on the WRFU
Table 2-6 Ports on the WRFU
Port Connector Quantity Remarks
48 V power supply port 3V3 1 Power portOptical port ESFP socket 2 Optical port
Main TX/RX port DIN, round, and waterproof 1
RX diversity port DIN, round, and waterproof 1
RF port
2.5 Auxiliary Devices
2.5.1 APM
The Advanced Power Module (APM) provides 48 V DC power and backup batteriesfor the distributed NodeBs, outdoor macro NodeBs, and mini NodeBs. In addition, itprovides space for installation of the BBU3900 and user equipment to realize fastnetwork deployment. The APM is of two types, APM30 and APM100.
The APM consists of the Power Supply Unit (PSU), Power Monitoring Unit (PMU),Power Distribution Unit (PDU), Surge Protection Unit (SPU), temperature control unit,
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and batteries. The APM cabinet provides space for installation of the user equipmentand performs the following functions:
DC power supply
Battery management
Monitoring and communication of the power supply system
Power distribution
Lightning protection
Temperature control
Backup power
Transmission equipment installation
The APM30 features compact design and light weight. It can be installed on a pole oron the ground. The 12 Ah, 24 Ah, or 36 Ah batteries can be configured in the APM30.The APM100 can be installed on the ground. The 50 Ah or 100 Ah batteries can beconfigured in the APM100.
Figure 2-8 and Figure 2-9 show the internal structures of the APM30 and APM100
respectively.
Figure 2-8 Internal structure of the APM30
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Figure 2-9 Internal structure of the APM100
Table 2-7 Technical specifications of the APM
Item APM30 Specification
APM100 Specification
Dimensions(Width x
Height xDepth) (thebaseexcluded)
600 mm 700 mm 480 mm
600 mm x 1130 mm x 600mm
Weight(batteriesand usertransmissionequipmentexcluded)
< 65 kg 88 kg
Engineeringspecifications
Workingtemperature
40C to 45C (with1120W/m
2solar radiation)
40C to 50C (withoutsolar radiation)
The AC heat exchangeris required in theenvironment of 20C.
North model: 40C to45C
South model: 5C to 45C
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Item APM30 Specification
APM100 Specification
Inputvoltage
176 V AC to 290 V AC (rated output power of thePSU)
90 V AC to 175 V AC (derated output power of the
PSU) 220 V AC to 240 V AC (single-phase)
110 V AC dual-live-wire
AC input
Frequencyof inputvoltage
45 Hz to 65 Hz
Outputvoltage
58 V DC to 44V DCDC output
DC outputs 10 A x 5: 5
50 A x 1: 1
5 A x 2: 2
16 A x 4: 4
32 A x 2: 2
48 V 12 Ahor 48 V 24Ah built-inbatteries
5 U -
48 V 36 Ahbuilt-inbatteries
2 U -
No built-inbatteries
7 U -
Space foruserequipment
48 V 100 Ah
built-inbatteries
- 4 U
2.5.2 Indoor Macro Cabinet
The indoor macro cabinet features small footprint, compact design, and stackinstallation, thus catering to indoor centralized installation and fast networkconstruction. It performs power distribution and surge protection functions for theBBU3900 and WRFUs. An indoor macro cabinet accommodates up to six WRFUs.The BTS3900 enables GSM, UMTS, and LTE modules to share one indoor macrocabinet, which saves installation space and facilitates smooth evolution.
The indoor macro cabinet supports 48 V DC power. If configured with suitable powermodules, it can also support 24 V DC or 220 V AC power.
Figure 2-10 and Figure 2-11 show the single indoor cabinet and the two stackedindoor cabinets respectively.
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Figure 2-10 Single indoor cabinet
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Figure 2-11 Two stacked indoor cabinets
2.5.3 Outdoor RF Cabinet
The outdoor RF cabinet, with the APM30 cabinet stacked on it, serves the powerdistribution, surge protection, and other protection for the WRFU and theBBU3900.The outdoor RF cabinet works in direct ventilation to dissipate heat. It canhold three WRFUs together with batteries, as shown in Figure 2-12. It can also holdup to six WRFUs, as shown in Figure 2-13.
The BTS3900A enables GSM, WCDMA, and LTE modules to share one outdoor RFcabinet, which saves space and facilitates smooth evolution.
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Figure 2-12 Outdoor RF cabinet with three WRFUs and the batteries
Figure 2-13 Outdoor RF cabinet with six WRFUs
2.5.4 Outdoor Mini Cabinet
The outdoor mini cabinet provides functions such as power distribution and surgeprotection for the BBU3900.The BBU3900 can be placed in an outdoor mini cabinet toform an outdoor BBU. This fulfills the outdoor application scenario of the compact miniNodeB.
The outdoor mini cabinet is configured with a built-in heat exchanger. If the AC poweris used, the mini cabinet must be configured with an EPS30-4815A and an SPD (AC).If the DC power is used, the mini cabinet must be configured with a DC powerdistribution box, as shown in Figure 2-14.
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Figure 2-14 Internal structure of the outdoor mini cabinet
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3 Products and CorrespondingApplication Scenarios
3.1 Distributed NodeB: DBS3900
With the continuous network capacity expansion, site selection has become abottleneck during network construction. Solutions to this problem, such as the 2G/3Gco-siting or site reselection, become increasingly difficult to implement and requiremore cost.
The DBS3900 typifies the compact design, easy installation, and low powerconsumption. In addition, it can reside in the spare space of an existing 2G site. TheRRU also has a compact design and light weight. It can be installed close to theantenna to decrease cable loss and improve system coverage. All the previouslymentioned features of the distributed NodeB facilitate the site selection, networkplanning and optimization. This enables the operators to efficiently deploy ahigh-performance network with a low Total Cost of Ownership (TCO) because lessmanpower, electric power, and space are required during network construction.
The distributed NodeB has multiple configurations to meet the requirement of quicknetwork construction in different scenarios.
3.1.1 Integrated Application (BBU3900 + RRU + APM)
If only the AC power is available at a newly built 3G site and power backup is required,the configuration of BBU3900 + RRU + APM can be applied to perform the function ofthe outdoor macro NodeB. Figure 3-1 shows the typical configuration of BBU3900 +RRU + APM. This configuration has the following features:
The BBU3900 can be placed in the APM and the RRU can be installed on themetal pole and close to the antenna.
Extra space is reserved in the APM for the BBU3900 installation. In addition, the
APM provides functions such as battery power backup, AC/DC conversion,power distribution, and surge protection.
The APM30 can be configured with 12 Ah, 24 Ah, or 36 Ah built-in batteries andthe APM100 can be configured with 50 Ah or 100 Ah built-in batteries. Whetherthe APM30 or the APM100 should be used depends on the required powerbackup period.
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Figure 3-1 Typical configuration of BBU3900 + RRU + APM
3.1.2 BBU3900 in a Standard 19-Inch Cabinet
For the scenario of 2G/3G co-siting, the BBU3900 can reside in any standard19-inch-wide and 2-U-high cabinet and the RRU can be installed on the metal poleand close to the antenna, as shown in Figure 3-2. In addition, the BBU3900 and RRUcan share the power supply and antenna systems of the 2G network, which enablesoperators to launch 3G services on the existent 2G network at a very low cost.
Figure 3-2 BBU3900 in a standard 19-inch cabinet
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3.1.3 BBU3900 in an Outdoor Mini Cabinet
In the scenario of 2G/3G co-siting, if no indoor space is available for the BBU3900, itcan reside in the spare space of an outdoor cabinet to form an outdoor BBU. The RRUcan be installed on the metal pole close to the antenna for quick deployment, asshown in Figure 3-3.
Figure 3-3 BBU3900 in an outdoor mini cabinet
3.2 Indoor Cabinet Macro NodeB: BTS3900The BTS3900 is applicable to the indoor scenarios such as centralized installation andrelocation of the macro NodeB, as shown in Figure 3-4.
The BTS3900, as one of the most compact indoor macro NodeBs in thetelecommunication industry, boasts large and expandable capacity. It is light, andsupportive of the GSM-WCDMA dual-mode application.
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Figure 3-4 Indoor cabinet macro NodeB
3.3 Outdoor Cabinet Macro NodeB: BTS3900AThe BTS3900A consists of two stackable cabinets, namely, the APM30 cabinet andthe outdoor RF cabinet. The BBU3900 is placed in the APM30 cabinet. Thus, theBTS3900A is applicable to the outdoor scenarios such as centralized installation orrelocation of the outdoor macro NodeB with its different configurations, as shown inFigure 3-5 and Figure 3-6.
The BTS3900A, one of the most compact outdoor cabinet macro NodeBs in thetelecom industry, boasts light weight and easy transportation due to its stackable
design.
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Figure 3-5 Outdoor cabinet macro NodeB (with three WRFUs)
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Figure 3-6 Outdoor cabinet macro NodeB (with six WRFUs)
3.4 Compact Mini NodeB: BTS3900CThe BTS3900C applies to the new outdoor 3G sites where no equipment room exists,hot spots, marginal networks, and blind spots such as tunnels.
The BTS3900C supports the 220 V AC power and the 48 V DC power. If the 220 VAC power is used, the mini cabinet must be configured with an EPS30-4815A and anSPD (AC). If the 48 V DC power is used, the mini cabinet must be configured with aDC power distribution box.
The BTS3900C can be installed on the pole, on the wall, or on the ground. When it isinstalled on the ground, a stand or a support must be used.
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Figure 3-7 Compact mini NodeB with DC power
Figure 3-8 Compact mini NodeB with AC power
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4 Features4.1 Advanced Platform Structure
The advanced platform structure of the 3900 series NodeBs is described as follows:
The 3900 series NodeBs that adopt the Huawei platform based on IP switch,support the GSM-WCDMA dual-mode cabinet, HSPA+, and smooth evolution toLTE.
The 3900 series NodeBs introduce the module-sharing concept, that is, thedistributed NodeB, cabinet macro NodeB, and compact mini NodeB share allbaseband and RF modules. The three module types form different NodeBproducts and apply to different scenarios. This concept protects investment inequipment and maintenance.
The dual-star GE IP switch technology enables exchange of large amount ofinternal data and satisfies more data traffic needs for HSPA+ and LTE in thefuture.
The hot-swappable BBU3900 provides eight slots and supports smooth capacity
expansion and evolution. The combination of duplexer and TRU in the RF module enhances the integrity of
RF parts and meets the future requirements of the minimized, high-efficiency, andlow-cost NodeBs.
A minimized NodeB cabinet is easy to carry and install, and the stacked NodeBcabinets take up a small footprint.
4.2 High Integrity and Large CapacityThe 3900 series NodeBs are highly integrated and large in capacity:
The BBU3900 contains highly integrated chips and features large capacity. Asingle BBU3900 supports 24 cells, with 1,536 UL CEs and 1,536 DL CEs. It alsosupports HSDPA and HSUPA services.
A single RRU3804 or WRFU supports the 4-carrier configuration. When theNodeB evolves from 1x1 to 1x4 or from 3x1 to 3x4, no extra RRU or WRFU isrequired.
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4.3 High PerformanceThe high performance of the 3900 series NodeBs are described as follows:
The 3900 series NodeBs feature high receiver sensitivity. The 2-way receiversensitivity is higher than 129.3 dBm without the Tower Amplification (TMA).
The WRFU supports 80 W output power and the RRU3804 supports 60 W outputpower, which means that the PAs of the 3900 series NodeBs increase by 40%.
The 3900 series NodeBs support open-loop TX diversity and closed-loop TXdiversity to enhance downlink coverage and capacity.
A single RRU3804 (with an SRXU) supports 4-way RX diversity to enhanceuplink demodulation.
4.4 ATM/IP Dual Stack
4.4.1 ATM
In ATM transmission, the 3900 series NodeBs support the following modes:
User-Network Interface (UNI) mode when transmission resources are inadequateand traffic is low.
Inverse Multiplexing on ATM (IMA) mode when there are rich transmissionresources. This mode features high reliability, high-speed transmission, and lowlatency.
Fractional ATM
4.4.2 IP
The IP transmission, based on IPs, supports the transmission of various data services
on low-rate links. In this mode, the IP transmission resources are fully utilized andoperators' investment is greatly reduced.
In IP transmission, the 3900 series NodeBs support the following technologies:
Native IP transmission that requires no additional hardware. Compared with thePWE3 technology, Native IP is more efficient, cost-effective, and independent ofPWE3 external devices
IP over E1, to fully utilize the E1 resources of the existing network and to offer acomplete solution of IP transmission
Fractional Point-to-Point Protocol (PPP)
ATM and IP dual stack, to protect operators' early investment in ATMtransmission
Compression multiplexing technology, namely the multiplexing of PPP headercompression, PPPMUX, and IPHC, to raise the transmission rate over E1 ports.With the technology of IPHC + PPP compression + PPPMUX, the E1transmission rate of the 12.2 kbit/s voice service rises by up to 37%
FP Multiplex (MUX), to reduce the number of Medium Access Control (MAC)headers by multiplexing packets and to raise the transmission rate over FE ports.With this technology, the FE transmission rate of the 12.2 kbit/s voice servicerises by up to 40%
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Hybrid transmission, which enables services to meet different QoS requirementsand then to allocate different transmission paths. For example, hybridtransmission enables real-time services to travel on electrical ports, such asE1/T1 ports, and non-real-time services to travel on Ethernet ports
4.5 Multiple Clock and Synchronization Modes
The 3900 series NodeBs support multiple clock and synchronization modes to fulfilldifferent clock networking requirements:
The upper-level clock extracts clock from the Iub interface and is set by default.
The 3900 series NodeBs adopt the GPS to achieve clock synchronization.
The external clock synchronization refers to the Building Integrated TimingSupply System (BITS) clock and the 2 MHz clock on the transmission equipment.
Without additional hardware, software upgrade supports the IP clock. The IPtransmission provides a high-performance and low-cost clock solution.
The internal clock, an internal stratum-3 clock, ensures that the NodeB withoutexternal clock still works properly for at least 90 days.
4.6 HSDPA Services
The 3900 series NodeBs support HSDPA services in the following aspects:
One carrier supports both HSDPA and R99/R4 services.
The peak downlink rate of a single UE is up to 14.4 Mbit/s.
A single cell supports up to 15 HS-PDSCH codes and dynamic code resourceallocation.
The 3900 series NodeBs support all 12 UE categories and rates.
A single cell supports 64 HSDPA subscribers.
The 3900 series NodeBs support dynamic power allocation.
The 3900 series NodeBs support QPSK and 16QAM to enhance spectrumutilization.
4.7 HSUPA Services
The 3900 series NodeBs support HSUPA services in the following aspects:
One carrier supports both HSUPA and R99/R4 services.
The 3900 series NodeBs support E-DCH TTI of 10 ms and 2 ms. The peak uplink data rate of an HSUPA subscriber is up to 5.76 Mbit/s.
A single cell supports 60 HSUPA subscribers.
The 3900 series NodeBs support 2 ms Received Total Wideband Power (RTWP)fast measurement to enhance the reliability of uplink load.
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4.8 MBMSThe 3900 series NodeBs support the Multimedia Broadcast and Multicast Service(MBMS) in the following aspects:
The 3900 series NodeBs support the setup, reallocation, and deletion of the
MBMS notification Indicator Channel (MICH), and handles related signalingconfiguration.
Each cell supports 16 Secondary Common Control Physical Channels(SCCPCHs).
Each SCCPCH supports 4 Forward Access CHannels (FACHs).
Each cell supports 63 MBMS channels.
4.9 High-Velocity UE AccessThe 3900 series NodeBs support a moving speed of up to 400 km/h. With this feature,UEs on high-speed vehicles, such as express railways and maglev trains, can stillcommunicate properly.
4.10 Antenna Enhancement TechnologyThe antenna enhancement technology enables the 3900 series NodeBs to performthe following functions:
Supporting the RET antenna to optimize network coverage, reduce interference,and enlarge system capacity
Supporting remote batch OM, batch software upgrade, and batch RET tiltadjustment
Supporting automatic scanning of the RET antenna.
Supporting the Antenna Interface Standard Group (AISG) 1.1 and AISG 2.0standard interfaces
Supporting the cascading of RET antennas and controls the tilt of the 2G RETantenna through the 3G site.
4.11 Same Band Antenna Sharing
To implement the same band antenna sharing with low insertion loss, the Same-bandAntenna Sharing Unit (SASU) and Same-band Antenna Sharing Adapter (SASA) areintroduced to reduce costs of network deployment.
The SASU applies to two scenarios, namely the antenna shared by 2G and 3Gsystems and the antenna shared by two 3G systems. The SASU that enables twodifferent systems at the same band to share one antenna system is an important partof the same band antenna sharing solution. It can greatly reduce the cost and time ofthe 3G network construction.
The SASU supports 900 MHz and 2100 MHz frequency bands.
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The SASA is also an important part of the same band antenna sharing solution. It willcause an insertion loss of 0.8 dB in the downlink, but it can integrate transmit carriersfrom two antennas into one antenna, without affecting GSM network performance.
4.12 OM PlatformsThe 3900 series NodeBs support two OM platforms, namely the LMT and the M2000,with which the 3900 series NodeBs perform the following OM functions:
Supporting local maintenance, remote maintenance, and reverse maintenance
Supporting Bootstrap Protocol (BOOTP) and Dynamic Host ConfigurationProtocol (DHCP) when data is not configured or the NodeB is faulty, the NodeBautomatically sets up an OM channel to enhance system reliability and to performremote troubleshooting
Supporting configuration baseline and simplifies the configuration rollbackprocess to roll back configuration more reliably
Providing the intelligent out-of-service function. Before the NodeB is out of
service, the UE is handed over to another 2G or 3G cell when the NodeBgradually reduces the cell pilot power. Such a handover prevents serviceinterruption
Providing the topology scanning of RRU networking and automatically monitorsthe topology to free manual operations
Providing the complete system self-testing function to support local softwarecommissioning
4.13 Environment Adaptability
The 3900 series NodeBs provide a comprehensive solution applicable to different
environments.
The 3900 series NodeBs fulfill the following outdoor environmental conditions:
Waterproof and dustproof design of the RRU complies with the InternationalProtection (IP) 65 standard. The RRU provides class-1 protection againstdamp, mould, and salt mist. The rack for RRUs can prevent them fromexposure to solar radiation and adverse environments. The RRU worksnormally in the solar radiation of 1,120 W/m2with the temperature rangingfrom 40C to +50C.
The waterproof and dustproof design of the BTS3900A complies with the IP55standard. The BTS3900A provides class-1 protection against damp, mould,and salt mist. The BTS3900A cabinet can resist solar radiation and adverseenvironments. The BTS3900A works normally in the solar radiation of 1,120
W/m2with the temperature ranging from 40C to +50C. The BTS3900C complies with the IP55 standard in terms of protection against
water and dust, and class-1 standards regarding protection against damp,mould, and salt mist. The BTS3900C works normally in the temperatureranging from 40C to +45C with the solar radiatio n of 1,120 W/m2 and thetemperature ranging from -40C to +50C without sol ar radiation.
The 3900 series NodeBs fulfill the indoor environmental conditions when theycomply with the IP20 standard. The BBU3900 works normally within the
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temperature ranging from 20C to +55C and the BTS 3900 works normally withinthe temperature ranging from 20C to +50C
The 3900 series NodeBs also provide a comprehensive auxiliary product solutionregarding the following aspects:
Power distribution
Surge protection
Transmission cables
Transmission equipment installation
Power backup
4.14 Capacity Expansion EvolutionBased on the Huawei IP switch platform, the 3900 series NodeBs support theGSM-WCDMA dual-mode cabinet. In addition, the 3900 series NodeBs are HSPA+ready in hardware. This facilitates smooth evolution the LTE.
The BBU supports HSPA+ Phase 1 (downlink 64QAM and MIMO 2x2).
The BBU supports HSPA+ Phase 2 (uplink 16QAM) by adding basebandprocessing boards.
The BBU supports LTE by adding baseband processing boards.
The RRU and WRFU have ready hardware for the HSPA+ and LTE.
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5 Operation and Maintenance5.1 Overview
Based on the Man Machine Language (MML) and Graphic User Interface (GUI), the
3900 series NodeBs provide a universal OM mechanism irrelevant to hardware andtake into consideration customers' requirements for equipment operation andmaintenance. In one word, they offer highly customized and powerful OM functions.Figure 5-1 shows the OM systems of the 3900 series NodeBs.
Figure 5-1 OM systems of the 3900 series NodeBs
M2000: Huawei Mobile Element Management System
LMT: Local Maintenance Terminal
NodeB: UMTS Base Transceiver Station
RNC: Radio Network Controller
The LMT and M2000 are two OM systems that implement comprehensivemaintenance for the 3900 series NodeBs.
LMT
One LMT is used to maintain one NodeB. The LMT supports the localmaintenance by directly connecting to the NodeB or the remote maintenance byconnecting to the NodeB through maintenance channels.The LMT performs the following functions:
Data configuration
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Status monitoring (through emulation panel)
Alarm monitoring
Software upgrade
Testing and commissioning
The LMT also maintains the NodeB through MML and GUI.
M2000
The M2000 is the network management center of the WCDMA Radio AccessNetwork (WRAN), which remotely maintains the NodeB in batches.
The M2000 performs the following functions:
Data configuration (CME-based)
Alarm monitoring
Performance monitoring
Software upgrade
The M2000 also maintains the NodeB through MML and GUI. It can supportdifferent types of NodeB and different versions of software at the same time.
5.2 OM FunctionsThe 3900 series NodeBs provide a universal OM mechanism independent ofhardware. The mechanism includes security management, equipment management,fault management, software management, and performance management.
5.2.1 Security Management
Security management is to manage the connection between NodeB software andOperation and Maintenance Center (OMC) (that is, the LMT or M2000 in the WRAN),user authentication, encryption, and forward resolution of interface messages.
5.2.2 Equipment Management
Equipment management provides data configuration and status management of allinternal equipment (boards and modules) and external equipment (power supply, EMI,and RET) of the NodeB.
5.2.3 Fault Management
Fault management accomplishes functions such as fault detection, alarm reporting,alarm-related troubleshooting, fault isolation and self-healing.
5.2.4 Software Management
Software management provides software downloading and activation, patch upgrade,file uploading and downloading functions in addition to consistency check of softwareand hardware versions, version management, and software version upgrade.
Software management is also a means to upgrade software locally through the USBport on the BBU3900 panel instead of through a PC.
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5.2.5 Performance Management
Performance management includes subscription of NodeB performance items,periodical control of performance statistics, measurement, sampling, storage, andreporting of performance items.
5.2.6 Commissioning ManagementThe 3900 series NodeBs perform commissioning functions in two ways, namelyuniversal testability frame and specific testing/commissioning.
The universal testability frame provides a universal testing mechanism tofacilitate the future extended testing. It also provides a common test templateregarding immediate test, periodical task test, and performance item test, whichfacilitates the template-based extended testing in the future.
The NodeB provides a variety of testing and commissioning functions for easymaintenance and fault diagnosis. The specific testing/commissioning has thefollowing functions:
E1/T1 online BER test, RTWP test, and CPU usage test
NodeB logs and one-push uploading of NodeB logs
Interface tracing of Iub and internal interface
Local serial port commissioning and serial port relocation
5.2.7 Environment Monitoring
The 3900 series NodeBs are attendance-free and widely applicable, which requires asound environment monitoring system to ensure the normal running of the NodeBequipment and to handle all possible emergencies.
The environment monitoring system provides customized solutions regarding doorcontrol, infrared, smoke, water immersion, humidity, and temperature. Users can alsodefine external alarms.
5.2.8 License Management
The M2000 is responsible for applying for and activating WRAN licenses. It deliverslicense control items to a NodeB and through these items controls the current servicesand capacity of the NodeB. The function control items include HSDPA, OTSR, HSUPA,and MBMS, while the resource control items include the number of CEs, number ofsectors and carriers, and power control.
The 3900 series NodeBs also provide interfaces for querying license control items,clearing license, and setting license function switches.
5.2.9 Task Management
The 3900 series NodeBs provide maintenance for the BBU, RRU, RET, and EMI.
The 3900 series NodeBs comply with the Antenna Line Device (ALD) protocol ofAISG2.0 and 3GPP, and downwards compatible with the AISG1.1 protocol.
The 3900 series NodeBs provide the RET antenna equipment with all OM functions,including auto scanning, data configuration (setting of the antenna tilt and TMA gain),status query, and fault reporting.
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The 3900 series NodeBs support self-detection of complete hardware installation andadopts the software package stored in the USB disk of the NodeB to perform localupgrade, thus saving time for upgrade. In addition, it requires no local softwarecommissioning.
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6 Reliability6.1 Overview
The 3900 series NodeBs introduce a fresh new NodeB system structure and providesa complete redundancy design. It also takes advantage of Huawei large-capacityASIC chips to enhance the integrity of modules, reduce the number of parts, andgreatly improve the reliability of the system.
6.2 System Reliability
The system reliability of the 3900 series NodeBs is embodied in the load-sharing andredundancy configuration design, which optimizes the fault detection/isolationtechnology of boards and systems and greatly improves the reliability of the system.
Redundancy Design
The main control board, transmission board, power supply unit, and fan in the NodeBall support redundancy. The BBU supports load sharing.
The CPRI port that connects the BBU and the RRU supports ring networking. Whenone CPRI link is faulty, the NodeB can automatically switch to another CPRI link.
The key data such as software version and data configuration files in the NodeBsupports redundancy.
Reliability Design
The NodeB can automatically self-detect and diagnose hardware failure andenvironment problems, and then report alarms. It also attempts to conductself-healing to clear faults. If the self-healing fails, it can automatically isolate the
faults.
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6.3 Hardware Reliability
Anti-Misinsertion Function of Boards
When a board is wrongly inserted into the slot of another board, the mistaken board
cannot be connected to the backplane and in this way the equipment is free fromdamage.
Overtemperature Protection
When the ambient temperature of the power amplifier on the RRU is too high, theNodeB generates overtemperature alarms and immediately switches off the poweramplifier to prevent it from damage.
Power Supply Reliability
Power supply units of the 3900 series NodeBs are also reliable in the followingaspects:
The 3900 series NodeBs have wide-range voltage and surge protectionfunctions.
The 3900 series NodeBs provide power failure protection for programs and data.
The boards protect power supply against overvoltage, overcurrent, and reverseconnection of positive and negative poles.
Hierarchical shutdown
The outdoor NodeB performs shutdown for the PA according to the backup powercapacity.
Surge Protection Reliability
The 3900 series NodeBs take surge protection measures on AC/DC power sockets,input/output signal ports (E1 port, interconnection port, and Boolean alarm port),antenna connectors, and GPS ports.
6.4 Software ReliabilityThe software reliability includes the redundancy of key files and data, and the powerfulerror tolerance of software.
Software Redundancy
The 3900 series NodeBs provide redundancy for key files and data such as software
versions and data configuration files to prevent them from damage and to ensure thenormal running of the NodeBs.
Redundancy of software versions
The 3900 series NodeBs provide separate redundancy for software versionsincluding the BootROM software version to avoid version problems. If one versionis faulty, the NodeB can switch to the backup version.
Redundancy of data configuration files
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The 3900 series NodeBs provide separate redundancy for data configuration filesto avoid interrupting the running of the files. If the current file is faulty, the backupfile can still work properly.
Error Tolerance
When the software is faulty, it does not affect the entire NodeB because the system iscapable of self-healing. The software error tolerance functions are as follows:
Scheduled detection of key resources
The 3900 series NodeBs perform occupancy check on software resources. Ifresource hang-up occurs due to software faults, the NodeB can release theunavailable resources in time and export logs and alarms.
Task monitoring
During the running of software, the 3900 series NodeBs monitor the internalerrors of all software and some hardware faults, if any. The 3900 series NodeBsalso monitor task progress and running status, report alarms when the system isfaulty, and try to restore the task by self-healing.
Data Consistency CheckThe 3900 series NodeBs perform scheduled or event-triggered data consistencycheck and can restore the data consistency preferably or preferentially. Also, theygenerate related logs and alarms.
Dongle
The 3900 series NodeBs can detect the irregular running status of the softwareand then automatically reset the system through the dongles at both software andhardware levels.
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7 Technical Specifications7.1 Technical Specifications for the BTS3900
Table 7-1 Technical specifications for the BTS3900
Item Specification
Frequency
band
2,100 MHz:
RX: 1,920 MHz to 1,980 MHz
TX: 2,110 MHz to 2,170 MHz
Capacity 24 cells
Maximum configuration: 6 sectors x 4 carriers, 3 sectors x 8 carriers
UL: 1,536 CEs
DL: 1,536 CEs
Output power One WRFU module supports 4 carriers and the output power over the antenna
port is 80 W.
Band 1-wayreceiverdiversity
(dBm)
2-way receiverdiversity
(dBm)
NoteReceiver sensitivity
Band I(2100MHz)
125.8 128.6 The receiver sensitivity (fullfrequency) at the antennaconnector of the NodeBaccording to 3GPP TS25.104; 12.2 kbit/s; TheBER does not exceed
0.001.
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Item Specification
126.5 129.3 The receiver sensitivity(Median performance overreception bandwidth) at theantenna connector of the
NodeB that handles 112.2kbit/s AMR services; TheBER does not exceed0.001.
125.6 128.4 The receiver sensitivity (fullfrequency) at the antennaconnector of the NodeBaccording to 3GPP TS25.104; 12.2 kbit/s, TheBER does not exceed0.001.
Other
Band
126.3 129.1 The receiver sensitivity
(Median performance overreception bandwidth) at theantenna connector of theNodeB that handles 12.2kbit/s AMR services; TheBER does not exceed0.001.
Transmissioninterface
A maximum of 32 E1/T1 ports, 2 FE electrical ports, 2 FE optical ports
Clock andsynchronization
Iub interface, GPS, BITS, OCXO free oscillation, clock over IP
Precision: 0.05 ppm
Dimensions 900 mm x 600 mm x 450 mm (H x W x D)
Weight Empty cabinet 70 kg
Cabinet in 3 x 1/3 x 2 configuration 120 kg
Cabinet in full configuration 160 kg
Power supply 48 V DC, Voltage range: 38.4 V DC to 57 V DC
+24 V DC, Voltage range: +21.6 V DC to +29 V DC
220 V AC single-phase and three-phases power cable
Configuration Per carrier Typical powerconsumption
Maximum powerconsumption
3x1 20 W 520 W 620 W
3x2 20 W 610 W 830 W
3x3 20 W 810 W 1070 W
Power consumption
3x4 20 W 1020 W 1330 W
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Item Specification
Note:
The typical power consumption is reached when the output power per carrier on thecabinet top is 20 W and the DBS3800 works with a 50% load.
The maximum power consumption is reached when the output power per carrier on the
cabinet top is 20 W and the DBS3800 works with a 100% load.
Workingtemperature
20C to +50C
Relative humidity 5% to 85%
Absolute humidity (1 to 25) g/m3
Air pressure 70 kPa to 106 kPa
Protection level IP20
Storage ETSI EN300019-1-1 V2.1.4 (2003-04) class1.2 "Weather protected, nottemperature-controlled storage locations"
Transportation ETSI EN300019-1-2 V2.1.4 (2003-04) class 2.3 "Public transportation"
Anti-seismicperformance
IEC 60068-2-57 (1999-11) Environmental testing Part 2-57: Tests TestFf: Vibration Time-history method
YD5083-99: Interim Provisions for Test of Anti-seismic Performances ofTelecommunications Equipment (telecom industry standard in People'sRepublic of China
Electromagneticcompatibility
The NodeB meets the Electromagnetic Compatibility (EMC) requirements andcomplies with the following standards:
R&TTE Directive 1999/5/EC
R&TTE Directive 89/336/EEC
3GPP TS 25.113 V3.2.0 (2000-06) ETSI EN 301489-1/23
ETSI EN 301908-1 V2.2.1 (2003-10)
ITU-R SM.329-10
The NodeB is Conformit Europenne (CE) certified, where ConformitEuropenne is the French equivalent of European Conformity.
7.2 Technical Specifications for the BTS3900A
Table 7-2 Technical specifications for the BTS3900A
Item Specification
Frequency
band
2,100 MHz:
RX: 1,920 MHz to 1,980 MHz
TX: 2,110 MHz to 2,170 MHz
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Item Specification
Capacity 24 cells
Maximum configuration: 6 sectors x 4 carriers, 3 sectors x 8 carriers
UL: 1,536 CEs
DL: 1,536 CEs
Output power One RF module supports 4 carriers and the output power over the antenna portis 80 W.
Band 1-way receiverdiversity
(dBm)
2-way receiverdiversity
(dBm)
Note
125.8 128.6 The receiver sensitivity (fullfrequency) at the antennaconnector of the NodeBaccording to 3GPP TS25.104; 12.2 kbit/s; The
BER does not exceed0.001.
Band(2100
MHz)
126.5 129.3 The receiver sensitivity(Median performance overreception bandwidth) at theantenna connector of theNodeB that handles 12.2kbit/s AMR services; TheBER does not exceed0.001.
125.6 128.4 The receiver sensitivity (fullfrequency) at the antenna
connector of the NodeBaccording to 3GPP TS25.104; 12.2 kbit/s; TheBER does not exceed0.001.
Receiversensitivity
Other
band
126.3 129.1 The receiver sensitivity(Median performance overreception bandwidth) at theantenna connector of theNodeB that handles 12.2kbit/s AMR services; TheBER does not exceed0.001.
Transmissioninterface
A maximum of 32 E1/T1 ports, 2 electrical FE ports, 2 optical FE ports
Clock andsynchronization
Iub interface, GPS, BITS, OCXO free oscillation, clock over IP
Precision: 0.05 ppm
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Item Specification
Dimensions RF cabinet: 700 mm x 600 mm x 480 mm (H x W x D)
Power cabinet: 700 mm x 600 mm x 480 mm (H x W x D)
Weight Empty RF cabinet 55 kg
Empty power cabinet 65 kg
Cabinet in 3x1 or 3x2 configuration 165 kg
Cabinet in full configuration 210 kg (without batteries)
Power supply 220 V AC single-phase and three-phases power cable
110 V AC dual-live-wire power cable
48 V DC, Voltage range: 38.4 V DC to 57 V DC
Power consumption (AC) Estimate of typical Power Backuptime with Typical powerconsumption and new battery
Configuration Typical50% load
Maximum100% load
50 Ah 100 Ah
3 x 1 630 W 740 W 3.8 hours 8.8 hours
3 x 2 730 W 970 W 3.2 hours 7.5 hours
3 x 3 950 W 1300 W 2.3 hours 5.2hours
Powerconsumption
3 x 4 1220 W 1580 W 1.6 hours 3.8 hours
Built-in battery 50 Ah, 100 Ah (optional)
Operationtemperature
40C to +45C (with solar radiation of 1,120 W/m2)
40C to +50C (without solar radiation)
Relative humidity 5% to 100%
Absolute humidity (1 to 30)g/m3
Air pressure 70 kPa to 106 kPa
Protection level IP55
Storage ETSI EN300019-1-1 V2.1.4 (2003-04) class1.2 "Weather protected, nottemperature-controlled storage locations"
Transportation ETSI EN300019-1-2 V2.1.4 (2003-04) class 2.3 "Public transportation"
Anti-seismic
performance
IEC 60068-2-57 (1999-11) Environmental testing Part 2-57: Tests Test Ff:
Vibration Time-history methodYD5083-99: Interim Provisions for Test of Anti-seismic Performances ofTelecommunications Equipment (telecom industry standard in People's Republicof China.
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Item Specification
Electromagneticcompatibility
The NodeB meets the Electromagnetic Compatibility (EMC) requirements andcomplies with the following standards:
R&TTE Directive 1999/5/EC
R&TTE Directive 89/336/EEC 3GPP TS 25.113 V3.2.0 (2000-06)
ETSI EN 301489-1/23
ETSI EN 301908-1 V2.2.1 (2003-10)
ITU-R SM.329-10
The NodeB is Conformit Europenne (CE) certified, where ConformitEuropenne is the French equivalent of European Conformity.
7.3 Technical Specifications for the DBS3900
Table 7-3 Technical specifications for the DBS3900
Item Specification
Frequency band RX (MHz) TX (MHz)
Band I
(2100 MHz) 19201980 21102170
Band II(1900 MHz) 18501910 19301990
Band V/VI (850 MHz) 824849 869894
Frequency
band
Band IV (AWS) 1710-1755 2110-2155Capacity 24 cells
Maximum configuration: 6 sectors x 4 carriers, 3 sectors x 8 carriers
UL: 1,536 CEs
DL: 1,536 CEs
Output power One RRU module supports 4 carriers, 60 W output power:
Band 1-way receiverdiversity
(dBm)
2-way receiverdiversity
(dBm)
NoteReceiver sensitivity
BandI(2100MHz)
125.8 128.6 The receiver sensitivity(full frequency) at theantenna connector ofthe NodeB according to3GPP TS 25.104, 12.2kbit/s; The BER doesnot exceed 0.001.
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Item Specification
126.5 129.3 The receiver sensitivity(Median performanceover receptionbandwidth) at the
antenna connector ofthe NodeB that handles112.2 kbit/s AMRservices; The BER doesnot exceed 0.001.
125.6 128.4 The receiver sensitivity(full frequency) at theantenna connector ofthe NodeB according to3GPP TS 25.104; 12.2kbit/s; The BER doesnot exceed 0.001.
Other
band
126.3 129.1 The receiver sensitivity(Median performanceover receptionbandwidth) at theantenna connector ofthe NodeB that handles112.2 kbit/s AMRservices; The BER doesnot exceed 0.001.
Transmissioninterface
A maximum of 48 E1/T1 ports, 2 electrical FE ports, 2 optical FE ports
Clock and
synchronization
Iub interface, GPS, BITS, OCXO free oscillation, clock over IP
Precision: 0.05 ppm
Dimensions BBU3900: 442 mm x 86 mm x 310 mm (W x H x D)
RRU: 480 mm x 270 mm x 150 mm (W x H x D) (without housing)
Weight BBU3900: 11 kg (full configuration) Typical configuration for 3 x 2: 7 kg
RRU: 15 kg
Power supply RRU: 48 V DC, Voltage range:36V DC to 57 V DC
BBU3900: 48 V DC, Voltage range:38.4 V DC to 57 V DC
Power consumption Estimate of typical Power Backup time withtypical power consumption and new battery
Configuration
Typical
(50%load)
Maximum
(100%load)
24 Ah 36 Ah 50 Ah 100 Ah
Power consumption
3x1 400 500 2.2hours
3.7 hours 5.5 hours 12.0hours
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Item Specification
3x2 550 740 1.5hours
2.5 hours 3.7 hours 8.5 hours
3x3 710 970 1.0
hour
1.7 hours 2.8 hours 6.4 hours
Operationtemperature:
BBU3900: 20to +55
RRU:
40to +50(with solar radiation of 1,120 W/m2)
40to +55(without solar radiation)
Relative humidity BBU3900: 5% to 85%
RRU: 5% to 100%
Absolute humidity BBU3900: (1 to 25) g/m3
RRU: (1 to 30) g/m3
Air pressure 70 kPa to 106 kPa
Protection level BBU3900:IP20
RRU:IP65
Storage ETSI EN300019-1-1 V2.1.4 (2003-04) class1.2 "Weather protected, nottemperature-controlled storage locations"
Transportation ETSI EN300019-1-2 V2.1.4 (2003-04) class 2.3 "Public transportation"
Anti-seismicperformance
IEC 60068-2-57 (1999-11) Environmental testing Part 2-57: Tests Test Ff:Vibration Time-history method
YD5083-99: Interim Provisions for Test of Anti-seismic Performances of
Telecommunications Equipment (telecom industry standard in People'sRepublic of China
Electromagneticcompatibility
The NodeB meets the Electromagnetic Compatibility (EMC) requirements andcomplies with the following standards:
R&TTE Directive 1999/5/EC
R&TTE Directive 89/336/EEC
3GPP TS 25.113 V3.2.0 (2000-06)
ETSI EN 301489-1/23
ETSI EN 301908-1 V2.2.1 (2003-10)
ITU-R SM.329-10
The NodeB is Conformit Europenne (CE) certified, where Conformit
Europenne is the French equivalent of European Conformity.
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7.4 Technical Specifications for the BTS3900C
Table 7-4 Technical specifications for the BTS3900C
Item Specification
Frequency band RX (MHz) TX (MHz)
Band I
(2100 MHz) 19201980 21102170
Band II(1900 MHz) 18501910 19301990
Band III/IX1800 MHz) 17101785 18051880
Frequency
band
Band IV(AWS) 1710-1755 2110-2155
Capacity 3 cells
Maximum configuration: 1x3
UL: 384 CEs
DL: 384 CEs
Output power One RRU module supports 3 carriers, 60 W output power.
Band 1-wayreceiverdiversity
(dBm)
2-way receiverdiversity
(dBm)
Note
125.8 128.6 The receiver sensitivity (fullfrequency) at the antennaconnector of the NodeBaccording to 3GPP TS25.104; 12.2 kbit/s; The
BER does not exceed0.001.
Band (2100MHz)
126.5 129.3 The receiver sensitivity(Median performance overreception bandwidth) at theantenna connector of theNodeB that handles 112.2kbit/s AMR services; TheBER does not exceed0.001.
Receiver sensitivity
Other
Band
125.6 128.4 The receiver sensitivity (fullfrequency) at the antenna
connector of the NodeBaccording to 3GPP TS25.104; 12.2 kbit/s, TheBER does not exceed0.001.
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Item Specification
126.3 129.1 The receiver sensitivity(Median performance overreception bandwidth) at theantenna connector of the
NodeB that handles 12.2kbit/s AMR services; TheBER does not exceed0.001.
Transmissioninterface
A maximum of 8 E1/T1 ports, 2 FE electrical ports, 2 FE optical ports
Clock andsynchronization
Iub interface, GPS, BITS, OCXO free oscillation, clock over IP
Precision: 0.05 ppm
Dimensions (H x Wx D)
600 mm x 400 mm x 390 mm
600 mm x 240 mm x 390 mm (used as outdoor BBU)
Weight (kg) 35
Power supply -48 V DC Voltage range: 38.4 V DC to 57 V DC
220 V AC single-phase power cable
110 V AC dual-live-wire power cable
Powerconsumption
Per carrier Typical Maximum
1x1 20 W 230 W 260 W
1x2 20 W 280 W 350 W
1x3 20 W 330 W 420 W
Power consumption
Note:
The typical power consumption is reached when the output power per carrier on thecabinet top is 20 W and the BTS3900C works with a 50% load.
The maximum power consumption is reached when the output power per carrier on thecabinet top is 20 W and the BTS3900C works with a 100% load.
Operationtemperature
40C to +45C (with solar radiation of 1,120 W/m2)
40C to +50C (without solar radiation)
Relative humidity 5% to 100%
Absolute humidity (1 to 30) g/m3
Air pressure 70 kPa to 106 kPa
Protection level IP55
Storage ETSI EN300019-1-1 V2.1.4 (2003-04) class1.2Weather protected, nottemperature-controlled storage locations.
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Item Specification
Transportation ETSI EN300019-1-2 V2.1.4 (2003-04) class 2.3Public transportation.
Anti-seismicperformance
IEC 60068-2-57 (1999-11) Environmental testing Part 2-57: Tests Test Ff:Vibration Time-history method
YD5083-99: Interim Provisions for Test of Anti-seismic Performances ofTelecommunications Equipment (telecommunication industry standard inPeople's Republic of China.
Electromagneticcompatibility
The NodeB meets the Electromagnetic Compatibility (EMC) requirements andcomplies with the following standards:
R&TTE Directive 1999/5/EC
R&TTE Directive 89/336/EEC
3GPP TS 25.113 V3.2.0 (2000-06)
ETSI EN 301489-1/23
ETSI EN 301908-1 V2.2.1 (2003-10)
ITU-R SM.329-10 The NodeB is Conformit Europenne (CE) certified, where Conformit
Europenne is the French equivalent of European Conformity.