Descritivo t

DBS3900 WiMAX V300R002
Product Description
Issue V3.0
Date 2009-09-30
HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2009. 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.
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and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.
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holders.
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Huawei Technologies Co., Ltd.
Address: Huawei Industrial Base
Bantian, Longgang
Shenzhen 518129
People's Republic of China
Website: http://www.huawei.com
Email: support@huawei.com

Product Description
Issue V3.0 (2009-09-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Page 3 of 43
Contents
1 Orientation and Features of the DBS3900 WiMAX............................................................................5
1.1 Orientation ......................................................................................................................................................5
1.2 Features ...........................................................................................................................................................6
2 Overall Structure of the DBS3900 WiMAX......................................................................................10
2.1 Overview.......................................................................................................................................................10
2.2 Hardware Structure....................................................................................................................................... 11
2.2.1 BBU3900............................................................................................................................................. 11
2.2.2 RRU3702.............................................................................................................................................14
2.3 Software Structure........................................................................................................................................15
2.4 Antenna System............................................................................................................................................16
2.5 Auxiliary Devices.........................................................................................................................................18
2.5.1 APM30H Series Devices ....................................................................................................................18
2.5.2 EMUA..................................................................................................................................................18
2.5.3 DCDU..................................................................................................................................................19
3 Application Scenarios of the DBS3900 WiMAX ..............................................................................20
3.1 Overview.......................................................................................................................................................20
3.2 Application Scenarios...................................................................................................................................20
4 Configurations.................................................................................................................................24
4.1 Overview.......................................................................................................................................................24
4.2 Typical Configuration ..................................................................................................................................24
5 Operation and Maintenance............................................................................................................25
5.1 Overview.......................................................................................................................................................25
5.2 OM Features .................................................................................................................................................26
6 Technical Specifications..................................................................................................................28
6.1 Capacity Specifications of the DBS3900....................................................................................................28
6.2 RF Specifications of the DBS3900 .............................................................................................................28
6.3 Engineering Specifications of the DBS3900..............................................................................................30
6.4 Surge Protection Specifications of the Ports on the DBS3900..................................................................32
6.5 Environmental Requirements of the DBS3900..........................................................................................33
6.5.1 Requirements for the Operating Environment of the DBS3900......................................................33

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6.5.2 Requirements for the Transportation Environment of the DBS3900 ..............................................35
6.5.3 Requirements for the Storage Environment of the DBS3900..........................................................37
6.6 Compliance Standards of the DBS3900......................................................................................................40

Product Description
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1 Orientation and Features of the DBS3900
WiMAX
1.1 Orientation
The DBS3900 WiMAX is the distributed WiMAX BTS developed by Huawei and complies
with IEEE 802.16e standards. Currently, the DBS3900 WiMAX satisfies the application
requirements of high-end mobile WiMAX networks, and thus is applicable to global markets.
Its coverage and capacity are expanded through 4T4R multi-antenna technologies, its
maintainability and testability are improved, and thus it provides subscribers with the wireless
broadband access services of large capacity and high quality.
The WiMAX system consists of the mobile station/subscriber station (MS/SS), access service
network (ASN), and connectivity service network (CSN). Figure 1-1 shows the position of the
DBS3900 WiMAX in the WiMAX network.
Figure 1-1 WiMAX network structure

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The MS/SS is the subscriber terminal on the WiMAX network. With the MS/SS, the
subscriber uses the services provided by the operator.
The ASN consists of the BTS (DBS3900 WiMAX) and ASN-GW, and provides wireless
access services for the CSNs of various network service providers (NSPs). One ASN can
be connected to multiple CSNs.
The CSN consists of the router, the authentication, authorization and accounting (AAA)
agent/server, and the Internet gateway, and supports subscriber databases. In addition, it
performs functions such as IP connection, mobility management, QoS management, and
billing management.
1.2 Features
The DBS3900 WiMAX uses advanced technologies, has high performance, and reduces the
network construction cost.
Advanced BTS Platform
Based on Huawei fourth-generation BTS platform, the DBS3900 WiMAX has the following
features:
Supporting smooth evolution from IEEE 802.16e to IEEE 802.16m and LTE/+TDD, and
thus protecting the operator's investment
Supporting the all-IP network architecture so that the DBS3900 WiMAX can benefit
from the high bandwidth and quick development of the IP network and effectively use
abundant IP transmission resources
Supporting the multi-carrier technology (With software configuration, one sector
supports multiple carriers to provide larger capacity. In this way, the number of new sites
required for capacity expansion decreases, and the capacity expansion cost is cut down.)
Aiming at environment protection
− The DBS3900 WiMAX uses efficient power amplification technologies to reduce
power consumption.
− The RRU3702 works in natural cooling mode without any cooler and reduces power
consumption.
− With software configuration, the RRU3702 can be split into two 2T2R RRUs to cover
two sectors. In this way, the number of required RRUs is reduced, and thus the BTS
power consumption is reduced.
− The DBS3900 WiMAX uses the multi-carrier technology, and thus two carriers share
one RF channel. In this way, compared with two RF channels, the power
consumption is reduced.
Wide Network Coverage
With advanced technologies, the DBS3900 WiMAX has wide coverage to ensure high
network performance.
Supporting multi-antenna technologies
− On the uplink, the DBS3900 WiMAX supports collaborate spatial multiplex (CSM)
and maximum ratio combining (MRC) to obtain uplink gain, expand uplink coverage,
and improve system capacity.

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− On the downlink, the DBS3900 WiMAX supports two-antenna multiple input
multiple output (MIMO) and four-antenna MIMO technologies such as MIMO A,
MIMO B, MIMO A/MIMO B adaptive handovers, cyclic delay diversity (CDD), and
Matrix A+CDD/Matrix B+CDD adaptive handovers. With multi-antenna
technologies, the DBS3900 WiMAX obtains the downlink diversity gain and power
gain to expand downlink coverage and improve system capacity.
Supporting the hybrid automatic repeat request (HARQ) technology (It is a technology
integrating forward error correction (FEC) and automatic repeat request (ARQ) to
improve transmission quality and to ensure that information is correct.)
Supporting outer-loop power control and closed-loop power control, which can minimize
fading effect and interference to improve transmission quality
− In outer-loop power control, the MS power can be timely adjusted according to the
quality of downlink signals but the adjustment accuracy is not high.
− In closed-loop power control, the MS power can be adjusted by step according to the
quality of uplink signals, and thus the adjustment accuracy is high.
− Outer-loop power control and closed-loop power control are dynamically switched.
In this way, the MS power can be adjusted timely, and the power range can be
accurately controlled.
Supporting adaptive modulation and coding (AMC), with which the system specifies
appropriate modulation and coding modes according to channel quality
− When channel quality is good, the high-order modulation mode and high-rate coding
mode are used to implement high transmission rate.
− When channel quality is poor, low-order modulation mode and low-rate coding mode
are used to ensure transmission link quality.
Easy Installation for Less CAPEX
The DBS3900 WiMAX is compact and light, and supports multiple installation modes to
reduce the footprint and the labor cost.
The RRU is small and light (21 kg), and thus it can be installed on a pole, tower, wall, or
support. In addition, the RRU can be installed near the antenna system to decrease feeder
length and loss so that the feeder cost is reduced.
The BBU can be installed in the 19-inch cabinet such as the GSM cabinet or APM30H to
avoid extra investment, as shown in Figure 1-2.

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Figure 1-2 BBU3900 in the 19-inch cabinet
Various Spectrum Applications
The DBS3900 WiMAX supports the 2.3 GHz band (2.3 GHz to 2.4 GHz), 2.5 GHz band
(2.496 GHz to 2.690 GHz), and 3.5 GHz band (3.4 GHz to 3.6 GHz).
The DBS3900 WiMAX supports the following bandwidths: 5 MHz, 7 MHz (available only
when the 3.5 GHz band is supported), and 10 MHz. Therefore, it satisfies the requirements of
the operators having different frequency resources. In addition, various services can be
provided through existing frequency resources and newly-added frequency resources.
WiMAX Network with High Security
The DBS3900 WiMAX supports device authentication, subscriber authentication, message
authentication, and air interface data encryption to improve network security.
Device authentication and subscriber authentication can effectively prevent unauthorized
devices and subscribers from accessing the WiMAX network and using resources and
services on the WiMAX network.
Message authentication is implemented through the cipher-based message authentication
code (CMAC) to ensure the validity of management messages and to prevent the
messages from modification and forgery.
Air interface data encryption ensures the security of the data transmitted over the air
interface and prevents subscriber data from interception and modification.
Flexible Networking
The DBS3900 WiMAX supports four networking modes.
The frequency reuse mode is denoted with N x S x K (N indicates the number of BTSs forming a cluster
on the network, S indicates the number of sectors on each BTS, and K indicates the number of
frequencies at which each BTS works).
PUSC 1x3x1: The three sectors of a BTS are used as a reuse cluster, each sector uses 1/3
subchannels at a frequency, and the equidirectional sectors on different BTSs use the
same subchannel.

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PUSC with all SC 1x3x3: The three sectors of a BTS are used as a reuse cluster, the three
sectors of each BTS work at a frequency respectively, and the equidirectional sectors on
different BTSs work at the same frequency. Different BTSs use different UL_PermBase
and DL_PermBase to balance interference, and thus the co-channel interference between
cells is reduced.
FFR 1x3x1 (same-frequency FFR): The three sectors of a BTS are used as a reuse cluster
and work at a frequency. In addition, the border area of each sector uses some
subchannels to ensure coverage, and the center area of each sector uses all the
subchannels to improve spectrum usage.
FFR 1x3x1 (different-frequency FFR): The three sectors of a BTS are used as a reuse
cluster, each sector works at a frequency respectively, the border area of each sector uses
some subchannels at the corresponding frequency, and the center area of each sector uses
all the subchannels at the corresponding frequency.
Reliable Clock Synchronization
As a synchronous communications system, the WiMAX system requires correct
synchronization signals. The DBS3900 WiMAX obtains satellite synchronization signals in
the following three ways:
A GPS satellite card is integrated into the main control board and connects the satellite
antenna and the device, and thus GPS satellite signals can be received.
When both GPS satellite signals and GLONASS satellite signals need to be received, the
USCU must be installed. The GPS/GLONASS satellite card is integrated into the USCU
and connects the satellite antenna and the device, and thus GPS satellite signals and
GLONASS satellite signals can be received. The satellite card calculates and combines
two types of signals to obtain more accurate signals.
When satellite signals cannot be received, the system automatically switches to the free-run mode, and
the BTS can work normally in this mode for eight hours.

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2 Overall Structure of the DBS3900 WiMAX
2.1 Overview
The DBS3900 WiMAX uses the modular design. It has only two basic functional modules:
BBU and RRU. The BBU communicates with the RRU through the high-rate CPRI interface.
The RRU3702 is connected to the BBU3900 through optical fibers and to the antenna system
through feeders or jumpers, as shown in Figure 2-1.
Figure 2-1 BBU3900 and RRU3702

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2.2 Hardware Structure
2.2.1 BBU3900
As the baseband subsystem of the DBS3900 WiMAX, the BBU3900 performs baseband
processing, signaling processing, radio resource management, OM, and clock synchronization,
and provides the transmission port for the ASN-GW.
Exterior of the BBU3900
Figure 2-2 shows the exterior of BBU3900.
Figure 2-2 Exterior of the BBU3900
Board Configurations of the BBU3900
Figure 2-3 shows the board configurations of the BBU3900.
Figure 2-3 Board configurations of the BBU3900
Table 2-1 Mandatory boards
Board Description Function
BMPT BWA Main
ProcessingTransmi
ssion Unit
It controls and manages the BTS system, provides
clock synchronization signals for the BTS system, and
provides the R6 interface for transmission.

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BBBI BWA Base Band
Interface Unit
It implements uplink and downlink data baseband
processing, and provides the CPRI interface for
communication with the RRU.
UPEU Universal Power and
Environment
Interface Unit
It converts the -48 V DC power supply into +12 V DC
power supply, and provides the environment
monitoring signal port.
FAN FAN Unit It dissipates heat in the BBU3900.
Table 2-2 Optional boards
UTRP Universal Extension
Transmission
Processing Unit
It provides eight E1/T1 ports.
USCU Universal Satellite
Card and Clock Unit
It integrates with the GLONASS/GPS satellite card,
provides the input port for external signals such as
satellite clock signals, and provides clock
synchronization signals for the DBS3900 WiMAX.
UELP Universal E1/T1
Lighting Protection
Unit
When the BBU3900 is connected to the E1/T1 cable in
an outdoor scenario, the UELP must be installed to
provide surge protection for the E1/T1 cable.
UEIU Universal
Environment
Interface Unit
It transmits environment monitoring device
information and alarm information to the main control
board.
Physical Ports on the BBU3900
Table 2-3 describes the physical ports on the BBU3900.
Table 2-3 Physical ports on the BBU3900
Module/B
oard Silkscreen
Connect
or Type
Quan
tity Function
FE/GE0
FE/GE1
RJ45 2 Connecting to the transmission device
through the Ethernet cable
SFP0
SFP1
LC 2 Connecting to the transmission device
through the optical cable
USB USB 1 Reserved
BMPT
TST USB 1 Clock test port

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Module/B
oard Silkscreen
Connect
or Type
Quan
tity Function
ETH RJ45 1 Local maintenance port, through which
the Web LMT maintains network
elements (NEs) locally
GPS port SMA 1 GPS antenna port
BBBI CPRI0
CPRI1
CPRI2
LC 3 Connecting to the BBU and RRU
PWR 3V3 1 -48 V DC power input port
MON0
MON1
RJ45 2 Connecting to the external monitoring
device and transmitting environment
alarm signals
UPEU
EXT-ALM0
EXT-ALM1
RJ45 2 Port that supports eight paths of dry
contact signals and is used for receiving
external alarm Boolean signals
UTRP E1/T1(0-3)
E1/T1(4-7)
DB26 2 Connecting to the transmission device
through the E1/T1 cable
GPS SMA 1 GPS antenna port
RGPS Plug-in 2 Reserved
BITS SMA 1 Reserved
TOD0
TOD1
RJ45 2 Reserved
USCU
M-1PPS RJ45 1 Reserved
INSIDE DB25 1 E1/T1 port that connects to the UTRP
and supports four paths of E1/T1 input
signals
UELP
OUTSIDE DB26 1 E1/T1 transmission port that supports
four paths of E1/T1 signal output and
connects to customer equipment
MON0
MON1
RJ45 2 Connecting to the external monitoring
device and transmitting environment
alarm signals
UEIU
EXT-ALM0
EXT-ALM1
RJ45 2 Port that supports eight paths of dry
contact signals and is used for receiving
external alarm Boolean signals

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2.2.2 RRU3702
As a remote RF unit, the RRU3702 is the IF and RF subsystem of the DBS3900 WiMAX. It
implements the conversion between baseband signals, IF signals, and RF signals, demodulates
the received radio signals, modulates the signals to be transmitted, and amplifies the signal
power.
Exterior of the RRU3702
Figure 2-4 shows the exterior of the RRU3702.
Figure 2-4 Exterior of the RRU3702
Physical Ports on the RRU3702
The RRU3702 has a modular structure with its ports at the module bottom and on the cabling
cavity. Table 2-4 describes the physical ports on the RRU3702.

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Table 2-4 Physical ports on the RRU3702
Silkscreen Connector Type
Qua
ntity Description
TX RX CPRI0
TX RX CPRI1
LC 2 Transmitting service data,
clock signals, and
synchronization information
ANTA_TX/RX
ANTB_TX/RX
ANTC_TX/RX
ANTD_TX/RX
N-shaped female
connector
4 Connecting the RRU and the
antenna
RTN0(+), NEG0(-)
RTN1(+), NEG1(-)
OT terminal 2 -48 V DC power input port
Remote electrical
tilt (RET) port
DB9 1 Connecting to the RET antenna
ETH RJ45 1 Port for internal
commissioning
2.3 Software Structure
The software structure of the DBS3900 WiMAX is composed of platform software, operation
and maintenance software, physical layer resource software, data encapsulation software,
service control software, and R6 interface control software. The upper layers of the platform
software are physical layer resource software, data encapsulation software, and service control
software. The operation and maintenance software are at the same layer with the physical
layer resource software, data encapsulation software, and service control software, as shown
in Figure 2-5.
Figure 2-5 Software structure of the DBS3900 WiMAX

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2.4 Antenna System
The antenna system consists of the RF antenna system and satellite antenna system.
Radio Antenna System
The RF antenna system receives and transmits BTS signals. Figure 2-6 shows the structure of
the RF antenna system.
Figure 2-6 Structure of the RF antenna system
(1) RF antenna (2) Jumper (3) Feeder
If the RRU3702 is installed on the tower and close to the antenna, only the jumper is used to connect the
antenna and the RRU3702.
The DBS3900 WiMAX often uses the two-port antenna and the four-port antenna.
If the RRU3702 is used as two 2T2R RRUs, the two-port antenna is recommended for
implementing the two-antenna MIMO function.
If the RRU3702 is used as the 4T4R RRU, the four-port antenna is recommended for
implementing the four-antenna MIMO function.
The DBS3900 WiMAX supports the RET antenna. The RS485 signal cable connects the RET
antenna and the RRU. The maintenance personnel can log in to the M2000 in the equipment
room to remotely maintain and manage the RET antenna, such as automatic scanning, antenna
tilt setting, and status query.

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Figure 2-7 Remote adjustment on the RET antenna
Satellite Antenna System
The satellite antenna system receives GPS signals or GLONASS signals. Figure 2-8 shows
the structure of the satellite antenna system.
Figure 2-8 Structure of the satellite antenna system
(1) GPS antenna (2) Feeder (3) Surge protector

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2.5 Auxiliary Devices
The auxiliary devices of the DBS3900 WiMAX refer to the power distribution device and
environment monitoring device (EMUA). The operator can select the APM30H or
DCDU-03C as the power distribution device according to the power supply configured for the
site.
2.5.1 APM30H Series Devices
The APM30H series devices include the power supply cabinet APM30H, the battery cabinets
IBBS200T and IBBS200D, and the transmission cabinet TMC11H. The APM30H and
IBBS200T/IBBS200D can be stacked.
IBBS200T and IBBS200D
When the customer requires the long-term power backup, the IBBS200D or IBBS200T is
recommended. The IBBS200T and IBBS200D support a maximum of -48 V 184 Ah DC
power backup and provide long-term power backup for the distributed BTS.
The IBBS200T is the integrated battery backup system (with TEC cooler), and dissipates
heat through the built-in TEC cooler.
The IBBS200D is the integrated battery backup system (with direct cooler), and thus it
works in direct cooling mode.
TMC11H
If larger space is required for customer equipment, the TMC11H is recommended. The
TMC11H can provide a maximum of 11U space for customer equipment. The BBU3900 can
be installed in the TMC11H.
The TMC11H dissipates heat through the core of the heat exchanger and the outer and inner
air circulation fans. Therefore, its heat dissipation insulation is good and it is applicable to
outdoor scenarios.
2.5.2 EMUA
The EMUA is used to monitor the environments in the equipment room and the cabinet, and is
applicable to all types of BTSs manufactured by Huawei.
The EMUA performs following functions:
Environment monitoring: The EMUA provides an independent 12 V/24 V DC
current-type (4 mA to 20 mA) port for a temperature and humidity sensor. The
temperature sensing range is -20o
C to +80o
C. The EMUA provides four ports for analog
value signal monitoring. Voltage-type (0 V to 5 V) and current-type (4 mA to 20 mA)
analog value signal sensors can be used.
Boolean value signal monitoring: The EMUA provides ports for Boolean value signal
monitoring. Boolean value signal sensors of the dry-contact mode and OC mode can be
used.
Communication ports: The EMUA provides two RS485 communication ports for the
communication between the EMUA and the BTS.

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2.5.3 DCDU
The DCDU is an indoor surge protection and power distribution box for DC power supply,
performing power distribution for the DBS3900 WiMAX.
The DCDU performs the following functions:
Providing surge protection for DC power input
Converting the -48 V DC power input into multiple -48 V DC power outputs and
providing simple power distribution functions
Supporting DC power surge protection alarms

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3 Application Scenarios of the DBS3900
WiMAX
3.1 Overview
The DBS3900 WiMAX is easily installed with a small footprint and has low power
consumption. Therefore, it can coexist with the existing site. With these features, the
DBS3900 WiMAX fully addresses operators' concern over site acquisition, facilitates network
planning and optimization, reduces network construction time, and thus enables operators to
efficiently deploy a high-performance WiMAX network with a low total cost of ownership
(TCO) by minimizing the investment in electricity, space, and labor.
3.2 Application Scenarios
This section describes application scenarios of the DBS3900 WiMAX.
BBU+RRU+APM30H
There are two types of scenarios for BBU+RRU+APM30H:
If the site is configured with the -48 V DC power supply and has no requirements for
power backup, only the transmission cabinet TMC11H is used. The BBU and
DCDU-03C are installed in the TMC11H, and the RRU is installed on the wall, pole, or
tower. The DCDU-03C distributes the DC power supply to the BBU, RRU, and related
transmission devices.
If the site is configured with only the 220 V AC power supply, the APM30H can be
installed as required. The BBU and transmission devices are installed in the APM30H,
and the RRU is installed on a wall, pole, or tower.
− If power backup is not required, only the outdoor power cabinet APM30H is used. It
provides a maximum of 7U space for the installation of the customer's equipment.
− When power backup is required, you can configure the battery cabinet IBBS200D or
IBBS200T, each of which can be configured with a built-in -48 V 184 Ah storage
battery group.
− If larger space is required, you can configure the transmission cabinet TMC11H,
which can provide extra 11U spaces.
Figure 3-1 shows the typical scenario of BBU+RRU+APM30H.

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Figure 3-1 Typical scenario of BBU+RRU+APM30H
BBU+RRU+OMB
When the site is configured with 220 V AC power supply and has no requirement for power
backup, the BBU and the AC/DC converter are installed in the outdoor mini box (OMB) The
OMB is installed on the pole, and the RRU is installed on the wall, pole, or tower. This
scenario facilitates the site acquisition and reduces the site lease cost.
Figure 3-2 shows the typical scenario of BBU+RRU+OMB.
Figure 3-2 Typical scenario of BBU+RRU+OMB

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Co-Site Application
If the DBS3900 WiMAX is installed at the same site with a 2G or 3G BTS, the BBU can be
installed in a standard 19-inch cabinet that provides 2U space, and the RRU can be installed
on the rooftop or the tower, and close to the antenna. In this scenario, the BBU and RRU can
share the power backup system and transmission system with the 2G or 3G BTS, and thus
network construction cost and period are reduced.
Figure 3-3 shows the typical scenario of the co-site application.
Figure 3-3 Typical scenario of the co-site application
Indoor Centralized Installation
The DBS3900 WiMAX supports indoor installation, and the BBU and RRU can be easily
installed on the L-shaped stand. In this case, the existing equipment room and devices can be
shared, and thus the installation space is saved.
In Figure 3-4, the BBU is installed on the baseband rack, and the RRU is installed on the RF
rack.

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A maximum of 6 RRUs can be installed on an RF rack.
The baseband rack provides 7U space for installation.
Figure 3-4 Indoor centralized installation

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4 Configurations
4.1 Overview
A single DBS3900 WiMAX supports a minimum of O(1) configuration, and a maximum of S
(2/2/2) configuration. It can be added with the BBBI, RRU, optical module, and optical cable,
and added with sector carriers through software configuration to expand capacity smoothly.
4.2 Typical Configuration
This section describes the typical configurations supported by the DBS3900 WiMAX and the
related hardware configuration.
Table 4-1 lists the typical configurations of the DBS3900 WiMAX.
Table 4-1 Typical configurations of the DBS3900 WiMAX
Configuration
Type
Number of
BBBIs
Number of
BMPTs
Number of
RRU3702s
Number of
CPRI Optical
Modules
O(1), 2T2R 1 1 1 1
O(1), 4T4R 1 1 1 1
O(2), 2T2R 1 1 1 1
O(2), 4T4R 1 1 1 2
S(1/1/1), 2T2R 1 1 2 2
S(1/1/1), 4T4R 1 1 3 3
S(1/1/1/1), 2T2R 2 1 2 2
S(2/2/2), 2T2R 2 1 2 4
S(2/2/2), 4T4R 2 1 3 6

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5 Operation and Maintenance
5.1 Overview
The DBS3900 WiMAX supports two OM modes: centralized OM and local OM.
Centralized OM: On the iManager M2000 in the equipment room, the user can remotely
maintain BTSs in a centralized manner, such as data configuration, remote
commissioning, alarm monitoring, performance monitoring, software upgrade, and
network adjustment.
This OM mode can save time and labor and thus reduce the operating expense (OPEX).
Local OM: With a computer, the user maintains the BTS by logging in to the BTS
through the web site, such as alarm management, data configuration through man
machine language (MML) commands, network adjustment, and subscriber management.
The LMT software is not required for the computer.
Figure 5-1 shows the typical networking for OM.
Figure 5-1 Typical networking for OM

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5.2 OM Features
The OM functions provided by the DBS3900 WiMAX involve software management, fault
management, performance management, configuration management, site deployment
management, equipment management, environment monitoring, tracing management, and log
management.
Configuration Management
Configuration management refers to configuring, querying, backing up, exporting, and
recovering BTS configuration data.
There are two modes of configuring DBS3900 WiMAX data: MML and graphic user interface
(GUI).
The MML mode is applicable only for single-BTS configuration. In the GUI mode, the user
can use the WCS integrated into the M2000 client to configure BTSs in batches.
Fault Management
The fault management system of the DBS3900 WiMAX detects hardware faults, environment
faults, and transmission faults, isolates the faulty components, and reports alarms.
The user can block the faulty carrier to prevent the neighboring cell from interference.
Therefore, the impact of faulty cell on the other components of the BTS can be avoided, and
the impact on the system services is minimized.
The alarm management system of the DBS3900 WiMAX timely detects and reports the faults
or exceptions on devices. On the iManager M2000, alarm information is displayed, and the
suggestions for clearing alarms are provided.
Performance Management
The performance management system of the DBS3900 WiMAX provides an all-around visual
operating environment. The user can perform performance management on the devices of the
entire network. Performance management refers to creating, modifying, and querying
performance measurement tasks and to managing measurement results. The user can trace the
running statuses of the network and devices, assess the performance of the network and
devices, and obtain network optimization references through performance management.
On the M2000, the user can set the subscription period and object. Then, performance
measurement results are displayed on the client of the M2000 periodically. The subscription
period can be set to 30 minutes.
Software Management
The DBS3900 WiMAX provides software version query, software upgrade, and patch
management.
Software version query refers to querying the BTS software version through MML
commands.
One-key software upgrade refers to upgrading the software of multiple BTSs through
GUI upgrade wizard on the M2000 client, and involves performing the health checks
before and after the upgrade, downloading and activating the software, displaying the
upgrade progress and status during the upgrade, sending the upgrade report during the
upgrade, and verifying services after the upgrade.

Product Description
Page 27 of 43
If the software upgrade fails or the network performance deteriorates greatly in the call
test after the upgrade, the user can perform version rollback through the GUI upgrade
wizard on the M2000 client to minimize the impact of upgrade failure on the system.
Patch management involves patch query, patch installation, and rollback.
Site Deployment Management
The site deployment solution provided by the DBS3900 WiMAX includes boards in cabinets
transportation, automatic detection of the BTS, and local OM without software
commissioning. All these functions greatly contribute to the reduction of the deployment
difficulties and the shortening of work time.
With the automatic detection of the BTS, the user imports the BTS ESN, IP address, and
the relevant information to the DHCP server through the DHCP tool on the remote client
of the M2000. Then, the DHCP server automatically allocates an IP address to the BTS
according to the BTS ESN, and sets up the OM link between the BTS and the M2000.
The software commissioning is performed in the network management center rather than
on site because the local commissioning is not required.
Environment Monitoring
The DBS3900 WiMAX performs comprehensive environment monitoring functions through
the environment monitoring device. Therefore, the unmanned DBS3900 WiMAX can be
deployed across wide areas and operate adverse environments.
The environment monitoring device is connected to the BBU3900 alarm port through the
monitoring signal cable. When the environment monitoring device detects an alarm of access
control, infrared sensing, smoke sensing, water sensing, or temperature monitoring, or a
customized alarm, the BBU reports the alarm to the M2000 and informs the attendant.
Tracing Management
Tracing management refers to tracing the R1 interface, R6 interface, subscribers, and system
resources through the M2000.
Interface tracing management refers to tracing and resolving the messages over the R1
and R6 interfaces, facilitating fault location.
Subscriber tracing management refers to tracing a single subscriber's messages over the
R1 and R6 interfaces. In this way, the user can monitor the information such as signal
quality.
System resource tracing refers to tracing carrier status, board CPU usage, and board
temperatures. In this way, the user can learn about the usage of system resources.
Log Management
Logs are classified into operation logs, running logs, security logs, commissioning logs, and
call logs. The user can back up logs in a specified directory and at a specified interval.

Product Description
Page 28 of 43
6 Technical Specifications
6.1 Capacity Specifications of the DBS3900
The capacity specifications of the DBS3900 WiMAX include the frequencies, bandwidths,
and data transmission rates that the DBS3900 WiMAX supports.
Frequency and Bandwidth
The 2.5 GHz band (2.496 GHz to 2.690 GHz) is supported. The frequency interval is 250
kHz or 200 kHz. The channel bandwidth is 5 MHz or 10 MHz, and it can be configured
through software.
The 2.3 GHz frequency band (from 2.3 GHz to 2.4 GHz) is supported. The frequency
interval is 250 kHz. The channel bandwidth is 5 MHz or 10 MHz, and can be configured
through software.
The 3.5 GHz frequency band (from 3.4 GHz to 3.6 GHz) is supported. The frequency
interval is 250 kHz. The channel bandwidth is 5 MHz, 7 MHz, or 10 MHz, and can be
configured through software.
The RRU3702 can be configured with various filters to meet the network construction
requirements of operators for different frequencies and bandwidths.
Number of Subscribers
When the bandwidth is 10 MHz, each sector carrier can support a maximum of 1024 online
subscribers (including active subscribers and idle subscribers).
Throughput over the Air Interface
When the bandwidth is 10 MHz, the downlink peak throughput of a single sector carrier is
34.21 Mbit/s (PUSC with all SC, DL/UL = 31:15, MIMO Matrix B).
When the bandwidth is 10 MHz, the uplink peak throughput of a single sector carrier is 7.98
Mbit/s (PUSC with all SC, DL/UL = 31:15).
6.2 RF Specifications of the DBS3900
The RF specifications of the DBS3900 WiMAX include the transmit specifications and
receive specifications of each band.

Product Description
Page 29 of 43
Transmit Specifications
The transmit specifications of the DBS3900 WiMAX are as follows:
2.3 GHz/2.5 GHz: 3.16 W (35 dBm) per each antenna of the RRU
3.5 GHz: 3.16 W (35 dBm) per each antenna of the RRU
The transmit power the antenna can be adjusted through commands, and the adjustment
step is 1 dBm.
Spurious emissions: complying with the ITU-R standards
9 kHz to 150 kHz: -36 dBm/1 kHz
150 kHz to 30 MHz: -36 dBm/10 kHz
30 MHz to 1 GHz: -36 dBm/100 kHz
1 GHz to 12.75 GHz: -30 dBm/1 MHz
Receive Specifications
The receive specifications of the DBS3900 WiMAX refer to the data in CTC coding mode, as
listed in Table 6-1, Table 6-2, and Table 6-3.
Table 6-1 Receive specifications of the DBS3900 WiMAX (2.3 GHz)
Receive Sensitivity at the 5
MHz Bandwidth (Unit: dBm)
Modulation
Mode
Wideband
(100 MHz)
Narrow Band
(≤ 30 MHz)
Wideband
(100 MHz)
Narrow Band
(≤ 30 MHz)
QPSK-1/2 -100 -99 -97 -96
QPSK-3/4 -97 -96 -94 -93
QAM16-1/2 -94.5 -93.5 -91.5 -90.5
QAM16-3/4 -90 -89 -87 -86
Modulation
Mode
Wideband
(194 MHz)
Narrow Band
(≤ 30 MHz)
Wideband
(194 MHz)
Narrow Band
(≤ 30 MHz)
QPSK-1/2 -100 -99 -97 -96
QPSK-3/4 -97 -96 -94 -93
QAM16-1/2 -94.5 -93.5 -91.5 -90.5
QAM16-3/4 -90 -89 -87 -86

Product Description
Page 30 of 43
Receive Sensitivity
at the 5 MHz
Bandwidth (Unit:
dBm)
Receive Sensitivity
at the 7 MHz
Bandwidth (Unit:
dBm)
Receive Sensitivity
at the 10 MHz
Bandwidth (Unit:
dBm)
Modulati
on Mode
Wideban
d (200
MHz)
Narrow
Band (≤
30 MHz)
Wideban
d (200
MHz)
Narrow
Band (≤
30 MHz)
Wideban
d (200
MHz)
Narrow
Band (≤
30 MHz)
QPSK-1/2 -98.5 -97.5 -96 -95 -94.5 -93.5
QPSK-3/4 -95 -94 -93.6 -92.6 -91 -90
QAM16-1
/2
-93 -92 -92.2 -91.2 -88.5 -87.5
QAM16-3
/4
-88 -87 -86.6 -85.6 -85 -84
6.3 Engineering Specifications of the DBS3900
The engineering specifications of the DBS3900 include dimensions, device weight, input
power supply, and power consumption.
Dimensions and Weight
Table 6-4 lists the dimensions and weight of the BBU3900 and RRU3702.
Table 6-4 Dimensions and weight of the BBU3900 and RRU3702
Component Dimensions (width x depth
x height)
Weight
BBU3900 442 mm x 310 mm x 86 mm The weight of a fully configured
BBU3900 is 11 kg.
RRU3702 356 mm x 120 mm x 480 mm 21 kg
Input Power Supply
Table 6-5 lists the input power supply parameters of the BBU3900.
Table 6-5 Input power supply parameters of the BBU3900
Rated Voltage Parameter Value
-48 V DC Rated voltage -48 V DC

Product Description
Page 31 of 43
Permissible range -38.4 V DC to -57 V DC
Table 6-6 lists the input power supply parameters of the RRU3702.
Table 6-6 Input power supply parameters of the RRU3702
Rated voltage -48 V DC
-48 V DC
Permissible range -36 V DC to -57 V DC
Power Consumption
The power consumption of a fully configured BBU3900 does not exceed 200 W.
The typical power consumption of the RRU3702 does not exceed 230 W.
Table 6-7 lists the power consumption specifications in different configuration modes at the
2.3 GHz/2.5 GHz band.
Table 6-7 Power consumption specifications at the 2.3 GHz/2.5 GHz band
Configuration Type
Average Power
Consumption (Unit: W)
Maximum Power
O1/S1 2T2R 250 320
O2/S2 2T2R 250 320
S(1/1/1) 2T2R 490 660
S(1/1/1/1) 2T2R 620 830
S(2/2/2) 2T2R 620 830
O1/S1 4T4R 330 440
O2/S2 4T4R 330 440
S(1/1/1) 4T4R 810 1120
S(2/2/2) 4T4R 860 1170
Table 6-8 lists the power consumption specifications in different configuration modes at the
3.5 GHz band.

Product Description
Page 32 of 43
Table 6-8 Power consumption specifications at the 3.5 GHz band
Configuration Type
Average Power
Maximum Power
O1/S1 2T2R 240 300
O2/S2 2T2R 240 300
S(1/1/1) 2T2R 470 630
S(1/1/1/1) 2T2R 610 810
S(2/2/2) 2T2R 610 810
O1/S1 4T4R 330 430
O2/S2 4T4R 330 430
S(1/1/1) 4T4R 790 1090
S(2/2/2) 4T4R 840 1140
6.4 Surge Protection Specifications of the Ports on the
DBS3900
The ports on the DBS3900 must meet specific surge protection requirements.
Table 6-9 lists the surge protection specifications of the ports on the DBS3900.
Table 6-9 Surge protection specifications of the ports on the DBS3900
Port Name Surge Protection
Specification
Impact Type
Differential mode: 10 kA
DC power port of the RRU
Common mode: 15 kA
8/20 µs impact current
Differential mode: 8 kA
Antenna port (including the
GPS port)
Common mode: 40 kA
Common mode: 250 A
Signal port (excluding the
FE/GE electrical port)
Common mode: 250 A
Differential mode: 500 V
Indoor FE/GE electrical port
Common mode: 4,000 V
1.2/50 µs surge voltage
Differential mode: 250 A
Dry contact input circuit
Common mode: 500 A

Product Description
Page 33 of 43
6.5 Environmental Requirements of the DBS3900
6.5.1 Requirements for the Operating Environment of the
DBS3900
The requirements for the operating environment of the DBS3900 consist of climatic,
biological, air purity, and mechanical stress requirements.
Climatic Requirements
Table 6-10 lists the climatic requirements for the operating environment of the DBS3900.
Table 6-10 Climatic requirements
Item Range
BBU3900 -20°C to +50°C
-40°C to +50°C (solar radiation not considered)
Temperature
RRU3702
-40°C to +45°C (solar radiation considered)
Temperature
change rate
≤ 3°C/min
BBU3900 5% to 95%
Relative
humidity
RRU3702 5% to 100%
Altitude -60 m to +3,000 m
BBU3900 ≤ 700 W/m2
(ambient temperature: 45°C)
Solar
radiation
RRU3702 ≤ 1120 W/m2
(ambient temperature: 45°C)
Thermal
radiation
≤ 600 W/m2
Wind speed ≤ 67 m/s
Biological Requirements
The operating environment of the DBS3900 should meet the following biological
requirements:
The environment should not be conducive to the growth of microorganisms, such as
fungi.
The equipment should be protected from rodents, such as mice.
Air Purity Requirements
The operating environment of the DBS3900 should meet the following air purity
requirements:

Product Description
Page 34 of 43
The air should be free from explosive, electroconductive, magnetoconductive, and
corrosive dust.
The concentrations of chemically active substances should comply with the requirements
listed in Table 6-11.
Table 6-11 Requirements for the concentrations of chemically active substances
Chemically Active Substance Concentration (mg/m3)
SO2 ≤ 0.03
H2S ≤ 0.10
NH3 ≤ 1.00
Cl2 ≤ 0.10
HCl ≤ 0.10
HF ≤ 0.01
O3 ≤ 0.05
NOx ≤ 0.05
Mechanical Stress Requirements
The operating environment of the DBS3900 should meet the mechanical stress requirements
Table 6-12 Mechanical stress requirements
Item Sub-item Range
Offset ≤ 3.5 mm -
Acceleration - ≤ 10.0 m/s2
Sinusoidal
vibration
Frequency range 5 Hz to 9 Hz 9 Hz to 200 Hz
Impact response
spectrum II
≤ 250 m/s2
Unsteady impact
Static payload 0
NOTE
The impact response spectrum refers to the maximum acceleration response curve generated by the
equipment under specified impact excitation. Impact response spectrum II indicates that the duration
of semi-sine impact response spectrum is 6 ms.
The static payload refers to the capability of the packed equipment to bear the weight from above in
the stipulated stack method.

Product Description
Page 35 of 43
6.5.2 Requirements for the Transportation Environment of the
DBS3900
The requirements for the transportation environment of the DBS3900 consist of climatic,
waterproofing, biological, air purity, and mechanical stress requirements.
Table 6-13 lists the climatic requirements for the transportation environment of the DBS3900.
Item Range
Temperature -40°C to +70°C
Temperature change rate ≤ 3°C/min
Relative humidity 5% to 100%
Altitude -60 m to 3,000 m
Solar radiation ≤ 1120 W/m2
Thermal radiation ≤ 600 W/m2
Waterproofing Requirements
The transportation environment of the DBS3900 should meet the following waterproofing
requirements:
The package should be intact.
Appropriate waterproofing measures should be taken to prevent rain water from entering
the package.
No water gathers in the vehicle.
The transportation environment of the DBS3900 should meet the following biological
requirements:
fungi.
The transportation environment of the DBS3900 should meet the following air purity
requirements:
corrosive dust.

Product Description
Page 36 of 43
The concentrations of mechanically active substances should comply with the
requirements listed in Table 6-14.
Table 6-14 Requirements for the concentrations of mechanically active substances
Mechanically Active
Substance
Unit Concentration
Suspended dust mg/m3
≤ 35
Precipitable dust mg/(m2
·h) ≤ 0.2
Grit mg/m3
≤ 30
NOTE
The diameter of a suspended dust particle is not greater than 75 µm.
The diameter of a precipitable dust particle is not smaller than 75 µm and not greater than 150 µm.
The diameter of a piece of grit is not smaller than 150 µm and not greater than 1000 µm.
SO2 ≤ 0.30
H2S ≤ 0.10
NO2 ≤ 0.05
NH3 ≤ 1.00
Cl2 ≤ 0.10
HCl ≤ 0.10
HF ≤ 0.01
O3 ≤ 0.05
The transportation environment of the DBS3900 should meet the mechanical stress

Product Description
Page 37 of 43
Item Sub-item Range
Offset ≤ 3.5 mm - -
≤ 15.0 m/s2
Sinusoidal
vibration
Frequency
range
2 Hz to 9 Hz 9 Hz to 200
Hz
200 Hz to 500 Hz
Acceleration
spectral
density
1 m2
/s3
0.3 m2
/s3
Random vibration
Frequency
range
10 Hz to 200
Hz
200 Hz to
2000 Hz
Impact
response
spectrum II
≤ 250 m/s2
Unsteady impact
Static payload ≤ 10 kPa
Falling Falling Height: 1 m
NOTE
equipment under specified impact excitation. Impact response spectrum II means that the duration of
semi-sine impact response spectrum is 6 ms.
The protection performance of the RRU should meet the IP55 requirements.
6.5.3 Requirements for the Storage Environment of the DBS3900
The requirements for the storage environment of the DBS3900 consist of climatic,
waterproofing, biological, air purity, and mechanical stress requirements.
Table 6-17 lists the climatic requirements for the storage environment of the DBS3900.
Item Range
Temperature -40°C to +70°C
Temperature change rate ≤ 1°C/min
Relative humidity 5% to 100%
Altitude -60 m to +3,000 m
Solar radiation ≤ 1120 W/m2

Product Description
Page 38 of 43
Item Range
Thermal radiation ≤ 600 W/m2
Wind speed ≤ 50 m/s
Waterproofing Requirements
The storage environment of the DBS3900 should meet specific waterproofing requirements.
In general, the equipment is placed indoors. The indoor storage environment should meet the
following waterproofing requirements:
There should not be water accumulated on the ground or falling on the package of the
equipment.
The equipment should be kept away from water sources such as hydrants and heating
devices.
If the equipment has to be stored outdoors, the outdoor storage environment should meet the
following waterproofing requirements:
The package is intact.
Appropriate waterproofing measures should be taken to prevent rain from entering the
package.
There should not be water accumulated on the ground or likely to enter the package.
The package should not be directly exposed to sunlight.
The storage environment of the DBS3900 should meet the following biological requirements:
fungi.
The storage environment of the DBS3900 should meet the following air purity requirements:
corrosive dust.
The concentrations of mechanically active substances should comply with the
Table 6-18 Requirements for the concentrations of mechanically active substances
Mechanically
Active Substance
Unit Concentration
Suspended dust mg/m3
≤ 5.00
Precipitable dust mg/(m2
·h) ≤ 500

Product Description
Page 39 of 43
Mechanically
Active Substance
Unit Concentration
Grit mg/m3
≤ 300
NOTE
The diameter of a suspended dust particle is not greater than 75 µm.
The diameter of a precipitable dust particle is not smaller than 75 µm and not greater than 150 µm.
The diameter of a piece of grit is not smaller than 150 µm and not greater than 1000 µm.
SO2 ≤ 0.30
H2S ≤ 0.10
NO2 ≤ 0.05
NH3 ≤ 1.00
Cl2 ≤ 0.10
HCl ≤ 0.10
HF ≤ 0.01
O3 ≤ 0.05
The storage environment of the DBS3900 should meet the mechanical stress requirements
Item Sub-item Range
Offset ≤ 1.5 mm -
Sinusoidal
vibration
Frequency range 2 Hz to 9 Hz 9 Hz to 200 Hz
Impact response
spectrum II
≤ 250 m/s2
Unsteady
impact
Static payload ≤ 5 kPa

Product Description
Page 40 of 43
Item Sub-item Range
NOTE
equipment under specified impact excitation. Impact response spectrum II means that the duration of
semi-sine impact response spectrum is 6 ms.
6.6 Compliance Standards of the DBS3900
This section describes the compliance standards of the DBS3900 WiMAX, including electro
magnetic compatibility (EMC) standards, safety standards, grounding and surge protection
standards, and related protocols.
WiMAX Standards
The DBS3900 WiMAX complies with the WiMAX standards listed in Table 6-21.
Table 6-21 WiMAX standards
Standard Description Remarks
IEEE 802.16 IEEE Standard for Local and metropolitan area
networks Part 16: Air Interface for Fixed
Broadband Wireless Access Systems
The DBS3900 WiMAX
complies with 802.16
Cor2D3 standards and
the latest system
requirements document
(SRD). The PHY layer
complies with the
OFDMA specifications.
NWG
protocols
WiMAX Forum Network Architecture, Stage
2/Stage 3
The DBS3900 WiMAX
complies with Release
1 Version 1.2.0.
EMC Standards
The DBS3900 WiMAX complies with the EMC standards.
In China, Europe, Japan, Australia, and New Zealand, it complies with the following
standards:
CISPR 22: limits and methods of measurement of radio disturbance characteristics of
information
IEC/EN 61000-4-2: Electromagnetic compatibility(EMC) Part 2:Testing and
measurement techniques Section 2:Electrostatic discharge immunity test Basic EMC
Publication

Product Description
Page 41 of 43
IEC/EN 61000-4-3: Electromagnetic compatibility; Part 3: Testing and measurement
techniques Section 3 radio frequency electromagnetic fields; immunity test
measurement techniques Section 4:Electrical fast transient/burst immunity test Basic
EMC publication
measurement techniques Section 5:Sruge immunity test
IEC/EN61000-4-6: Electromagnetic compatibility: Part 6:Testing and measurement
techniques: Section 6 conducted disturbances induced by radio-frequency fields
immunity test
IEC/EN6000-4-11: Electromagnetic compatibility: Part 11:Testing and measurement
techniques Section 11:Voltage dips, short interruptions and voltage variations immunity
IEC/EN 61000-4-29: Electromagnetic compatibility: Part 29: Testing and measurement
techniques and voltage variations on d.c. Input power port immunity test
IEC/EN 61000-3-2: Electromagnetic compatibility: Part3: limits Section2: limits for
harmonic current emissions (equipment input current less than or equal to 16A per
phase)
IEC/EN 61000-3-3: Electromagnetic compatibility: Part3: limits Section3: limitation of
voltage fluctuations and flicker in low-voltage supply systems for equipment with rated
current less than or equal to 16A
EN 300 386 V1.3.3: Electromagnetic compatibility and Radio spectrum Matters
(ERM);Telecommunication network equipment; ElectroMagnetic Compatibility (EMC)
requirements
ETSI EN 301 489-1 V1.5.1: Electromagnetic compatibility and Radio spectrum Matters
(ERM); Electromagnetic Compatibility (EMC) standard for radio equipment and
services; Part 1: Common technical requirements
ETSI EN 301 489-4 V1.2.1: Electromagnetic compatibility and Radio spectrum Matters
(ERM); Electromagnetic Compatibility (EMC) standard for radio equipment and
services; Part 4: Specific conditions for fixed radio links and ancillary equipment and
services
ITU-T SM 329-10: SPURIOUS EMISSIONS (Question ITU-R 55/1)
ETSI EN 301 390: Fixed Radio Systems; Point-to-point and Multipoint Systems;
Spurious emissions and receiver immunity limits at equipment/antenna port of Digital
Fixed Radio Systems
GB9254-1998: RF disturbance limit and testing method for IT devices
YD1138-2001: EMC requirements and measurement method for the fixed wireless links
and other assisting devices
In North America, the DBS3900 WiMAX complies with the following standards:
FCC Part 2: Federal Communication Committee - part 2 - Frequency Allocation, Radio
Treaty Matters, and General Rules
FCC Part 15: Federal Communication Committee - part 15- radio frequency device
Safety Standards
The DBS3900 WiMAX complies with the following safety standards:
IEC/EN/UL60950-1 information technology equipment - safety -part 1: General
Requirements

Product Description
Page 42 of 43
IEC/EN60825-1 safety laser product products - part 1: Equipment classification,
requirement and user's guide
IEC/EN60825-2 safety laser product products - part 2: safety of optical fiber
communication systems
GR1089 Electromagnetic Compatibility and Electrical Safety - Generic Criteria for
Network Telecommunications Equipment
IEC/EN 60215 safety requirement for radio transmitting equipment
Environmental Standards
Standard Description
ETS 300 019-1-1 Class 1.2 Equipment Engineering (EE); Environmental conditions
and environmental tests for telecommunications
equipment; Storage.
equipment; Transportation.
equipment; Stationary use at weatherprotected locations.
equipment; Stationary use at non-weatherprotected
locations.
ETS 300 019-1-4 Class 4.1E Equipment Engineering (EE); Environmental conditions
equipment; Stationary use at non-weatherprotected
locations - extended.
ETS300753 Acoustic noise emitted by telecommunications equipment
GR-63 Network equipment -building system (NEBS)
requirements: physical protection
Grounding and Surge Protection Standards
IEC 61024-1(1993) Protection of structures against lightning
IEC 61312-1(1995) Protection Against Lightning Electromagnetic Impulse
Part I: General Principles
IEC 61000-4-5(1995) Electromagnetic compatibility (EMC)- Part 4: Testing and
measurement techniques - Section 5: Surge immunity test
ITU-T K.11(1993) Principles of Protection Against Overvoltage and
Overcurrents

Product Description
Page 43 of 43
ITU-T K.27(1996) Bonding Configurations and Earthing Inside a
Telecommunication Building
ITU-T K.41(1998) Resistibility of internal interfaces of telecommunication
centres to surge overvoltages
YDJ 26-89 Temporary technical specifications for the grounding
design of a telecommunication office
GB 50057-94 Design specifications about the surge protection for
buildings
YD/T5098-2001 Design specifications about the overvoltage protection
engineering of the telecommunications office
YD5068-98 Design specifications about the surge protection and
grounding of the mobile telecommunications BS
Power Supply Standards
IEC300 132-1 -
IEC300 132-2 -
Noise Standards
Standard
RRU3702 Natural cooling and no noise
BBU3900 GR-63-CORE ISSUE3 78dBA @ 27o
C
ETS 300 753 telecommunications room 72dBA @ 23o
C

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