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DBS3900 V300R008

Product Description

Issue 04 (2008-06-11)

Commercial in Confidence

Page 25 of 46

5

Operation and Maintenance

5.1 O&M System

The RRU3004 and BBU3900 support provide the O&M system based on MMI, BIN
Web UI, SNMP, and CLI. Figure 5-1 shows the topology of the O&M subsystem.

Figure 5-1

Topology of the O&M subsystem

Site Maintenance

Terminal System

MMI

MMI

BTS

BTS

BSC

Abis

Ab

is

OMC

Server

Hub

Remote Site

Maintenance System

Site Maintenance

Terminal System

O&M Platform

The DBS3900 supports the Local Maintenance Terminal (LMT) O&M platform. The
LMT can be used to maintain the items of one BTS, such as software upgrade, data
loading, alarm collection, and equipment maintenance, etc.

O&M Modes

The DBS3900 supports two types of O&M modes: local maintenance and remote
maintenance.

Local maintenance

You can maintain the BTS by directly connecting the LMT to the BTS.

Remote maintenance

You can maintain the BTS in the BSC equipment room or the maintenance center
by accessing the LMT to the route provided by the BSC.

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Содержание DBS3900 V300R008

Страница 1: ...Product Description DBS3900 V300R008 Issue 04 Date 2008 06 11 HUAWEI TECHNOLOGIES CO LTD ...

Страница 2: ...l rights reserved No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co Ltd Trademarks and Permissions and other Huawei trademarks are trademarks of Huawei Technologies Co Ltd All other trademarks and trade names mentioned in this document are the property of their respective holders Notice The information in t...

Страница 3: ...nt Chapter Content 1 Introduction to DBS3900 This chapter introduces the position of the DBS3900 in the GSM network and their features 2 Features of the DBS3900 This chapter introduces the main features of the DBS3900 3 System Architecture This chapter introduces the physical architecture functional architecture and configuration of the DBS3900 4 Services and Features This chapter introduces the m...

Страница 4: ...nstallation This chapter introduces the installation of the DBS3900 A Standards The appendix lists the technical standards complied by the DBS3900 B Glossary The appendix lists the glossary involved in this manual C Acronyms and Abbreviations The appendix lists the acronyms and abbreviations involved in this manual ...

Страница 5: ... History Issue Description Issue Date Author Approved by 01 Initial commerial release 2008 03 21 Ji Li Feng Baoshun 02 Second commerial release 2008 04 25 Ji Li Feng Baoshun 03 Third commerial release 2008 05 20 Li Haixia Feng Baoshun 04 Forth commerial release 2008 06 11 Li Haixia Feng Baoshun ...

Страница 6: ...k and Synchronization 14 2 5 Multi Band Application 14 2 6 Antenna 14 2 7 Installation 15 2 7 1 Installation of the BBU 15 2 7 2 Installation of the RRU 15 2 8 Environment Adaptability 15 2 9 Operation and Maintenance 16 2 10 High Velocity MS Application 16 2 11 Capacity Expansion and Evolution 16 2 11 1 Capacity Expansion 16 2 11 2 Evolution 16 3 System Architecture 18 3 1 Functional Architecture...

Страница 7: ...t 26 5 2 6 Environment Monitoring 26 5 2 7 Performance Management 27 6 Reliability 28 6 1 System Reliability 28 6 2 Hardware Reliability 29 6 2 1 Hardware Reliability of the BBU 29 6 2 2 Hardware Reliability of the RRU 30 6 3 Software Reliability 30 6 3 1 Regular Check on Key Resources 30 6 3 2 Parameters Check 30 6 3 3 Software Failure Protection 30 6 3 4 Data Check 30 6 3 5 Saving Operation Log ...

Страница 8: ...r the BBU 37 7 9 2 Lightning Protection Specifications for the RRU 38 7 10 Operating Environment 39 7 10 1 Operating Environment of the BBU 39 7 10 2 Operating Environment of the RRU 39 7 11 EMC 39 7 12 Acoustic Noise 40 7 13 Storage Environment 40 7 14 Transportation Environment 40 7 15 Anti Seismic Protection 40 7 16 Operating Requirements 40 8 Installation 41 A Technical Standards 42 A 1 EMC El...

Страница 9: ...cilitates site acquisition equipment room construction device transportation and equipment installation The introduction of the DBS3900 distributed BTS will boost the development of the mobile network enable the mobile network to be compatible broadband based environment friendly and evolutional and help the telecom operators to build a better future oriented mobile network Unless otherwise specif...

Страница 10: ...ns and consumes a small amount of power It can be installed easily in your existing site RRU3004 The RRU3004 is an outdoor remote radio unit It processes baseband signals and RF signals One RRU3004 module provides two transceivers If two RRU3004 modules are combined and mounted in the RRU3004 rack four transceivers are available Figure 1 2 shows a single RRU3004 module Figure 1 2 A single RRU3004 ...

Страница 11: ...bly combined to meet different application requirements Table 1 1 lists the scenarios for the DBS3900 Table 1 1 Scenarios for the DBS3900 Module Scenario BBU Indoors It can be mounted on the wall or installed in the 19 inch cabinet or rack RRU3004 rack APM or OFB RRU Indoors outdoors Distributed base station coverage in cities roads and railways 1 2 Advantages of the DBS3900 The DBS3900 can be use...

Страница 12: ...t can also be mounted inside the existing device such as outdoor BTS transmission device and power supply system These installation features help reduce the investment in floor space The RRU can be installed close to the antennas This helps reduce the cable loss save cost on the feeders and expand the coverage 1 2 3 High Reliability Each RRU provides two CPRI high speed ports to enable the RRU and...

Страница 13: ...A maximum of 12 cells can be configured and multi band networking is supported Antenna hopping and transmit diversity are supported 2 2 Capacity One RRU3004 provides two transceivers and two assembled RRU3004s provide four transceivers 72 transceivers are supported by BBU3900 Abis over IP is available 2 3 Networking Capability E1 T1 FE optical microwave and satellite transmission are supported Sta...

Страница 14: ...RET in the equipment room to precisely adjust the network coverage This minimizes the maintenance operation and saves the maintenance cost The RET has a built in mechanically adjustable phase shifter which is driven by a stepper motor outside the antenna On the LMT the maintenance personnel issues command upon which the stepper motor adjusts the phase of the phase shifter to adjust the antenna dow...

Страница 15: ...exible Through the RRU3004 rack the RRU3004 can be mounted on the metal pole wall stand or tower depending on field requirements It can be mounted outdoors without equipment room or air conditioner This meets the economical and speedy deployment As the cables for the RRU are led out from its bottom multiple RRU modules can be installed in parallel or separately You can install or pull out multiple...

Страница 16: ...opology structure are automatically monitored by the system so that manual operations are reduced The RRU maintenance cavity is designed with two buttons one for antenna path test and the other for CPRI loop test When installing the RRU or locating faults of the RRU the Test LED on the RRU helps you know the status of the antenna path and the CPRI port The OMStar maintenance tool helps improve mai...

Страница 17: ... V300R008 Product Description Issue 04 2008 06 11 Commercial in Confidence Page 17 of 46 The DBS3900 adopts the unified BTS platform developed by Huawei Wireless and enables the smooth evolution from 2G to 3G ...

Страница 18: ...e of the BBU Site maintenance terminal Central processing unit High speed interface unit BTS interface unit Clock unit BSC MMI Abis Maintenance path RRU Control path Service data path CPRI BBU Monitoring unit Environment monitoring bus Boolean alarm input Timing Frame number and clock External synchronization clock As shown in Figure 3 1 the BBU consists of the following functional modules BTS Int...

Страница 19: ...interface unit and communicates with the BSC and BTS Controls the RF interface unit and communicates with the RRU Performs clock module functions such as providing and managing BTS clock signals and supporting external synchronization clock input 3 1 4 High Speed Interface Unit The high speed interface unit performs the following functions Receives uplink baseband data from the RRU Transmits downl...

Страница 20: ...own in Figure 3 2 the RRU consists of the following modules High speed interface module Signaling processing unit Power Amplifier PA Dual Duplexer LNA The following sections describe these modules in details 3 2 2 High Speed Interface Module The high speed interface module performs the following functions Receives the DL data from the upper level equipment BBU Sends UL data to the upper level equi...

Страница 21: ...to digital conversion through the DAC and IQ demodulation Up converts RF signals The control module performs the following functions Performing initialization and data loading of the RRU Collecting alarm information and reporting board status Receiving configuration commands of the BBU and performing configuration management of other modules Providing a channel for operating and maintaining the RR...

Страница 22: ...ce HR Half rate speech service Speech service AMR Adaptive multi rate F9 6 9 6 kbit s full rate data service F4 8 4 8 kbit s full rate data service Data service F2 4 2 4 kbit s full rate data service GPRS CS1 CS2 CS3 CS4 packet service Packet service EDGE MCS1 MCS9 EGPRS packet service 4 2 Features This section describes the features of the DBS3900 EDGE The DBS3900 support system information broad...

Страница 23: ... antenna hopping Encryption The DBS3900 support the following non encryption encryption and decryption features A5 0 non encryption A5 1 A5 2 and A5 3 encryption decryption Power Control The DBS3900 support the following power control mechanisms Static power control Dynamic power control Detection The DBS3900 support the following detection mechanisms Detection of random access collision In positi...

Страница 24: ...rt RET antenna which facilitates the adjusting of the antenna tilt and thus facilitates the optimization of the network coverage The RRU provides the multi wire RET interface that complies with the AISG interface specifications The multi wire mode is defined through a controlling cable which applies to the scenario where the RRU and the antenna are closely installed The RET antenna feature complie...

Страница 25: ...e Site Maintenance System Site Maintenance Terminal System O M Platform The DBS3900 supports the Local Maintenance Terminal LMT O M platform The LMT can be used to maintain the items of one BTS such as software upgrade data loading alarm collection and equipment maintenance etc O M Modes The DBS3900 supports two types of O M modes local maintenance and remote maintenance Local maintenance You can ...

Страница 26: ...onfiguration In dynamic configuration mode the modified data takes effect immediately In static configuration mode the modified data takes effect only when the BTS is reset Automatic data backup 5 2 4 Software Management Software management involves the compatibility check of the software version and hardware version version management software upgrade etc 5 2 5 Alarm Management Alarm management i...

Страница 27: ...e management involves the following features Measures and reports performance counters based on services requirements Monitors the performance of the internal and external telecommunications networks and generates alarms when the performance deteriorates Monitors the operating status of the system monitors the traffic volume on the ports and measures the technical data of the operating system Moni...

Страница 28: ... off These topologies can improve system reliability In hybrid topology one RRU can be connected with two BBUs This ensures that the services are not affected when one CPRI path is faulty Figure 6 1 shows the hybrid topology of the BBUs and RRUs Figure 6 1 Hybrid topology of the BBUs and RRUs The BBUs and RRUs can form a ring network When unidirectional or bidirectional fault occurs in any node of...

Страница 29: ...s the life span and reliability of the heat dissipation system The BBU also supports functions such as fan start fan shutoff and fan alarm reporting When one fan in the BBU fails the system can still operate normally given the temperature specification for the system is 10 C lower or higher than that specified for the lower threshold or higher threshold respectively The power supply module prevent...

Страница 30: ...s Seizure check is conducted on various software resources in the system If a resource failure occurs due to software faults the check mechanism can ensure the release of suspended resources and the output of the related logs and alarms 6 3 2 Parameters Check Software checks all parameters contained in the LMT OMC commands to ensure their validity The validity of the data in the data configuration...

Страница 31: ... 46 6 3 5 Saving Operation Log Information The system records user operations on a regular basis and saves the information as operation logs The operation logs help you locate problems and restore data 6 3 6 Backup The system supports backup of the transmission links and the main control board ...

Страница 32: ...SM 900 890 915 MHz 935 960 MHz E GSM 900 880 915 MHz 925 960 MHz GSM 1800 1710 1785 MHz 1805 1880 MHz 7 2 Transmit Specifications Table 7 2 lists the output power of the transceiver in the RRU3004 Table 7 2 Output power of the RRU3004 Operating Band Operating Mode Output Power Per Transceiver GMSK 8PSK TOC GSM 900 E GSM 900 Non combining 30 W 20 W GSM 900 E GSM 900 Combining 15 W 10 W GSM 1800 Non...

Страница 33: ...na 118 5 dBm typical value 7 4 Dimensions Table 7 4 lists the mechanical dimensions of the DBS3900 Table 7 4 Mechanical dimensions of the DBS3900 Configuration Type Width mm Depth mm Height mm BBU3900 442 310 86 RRU3004 two transceivers without the rack 100 356 480 RRU3004 four transceivers with the rack 247 410 556 7 5 Weight Table 7 5 lists the weight of the DBS3900 Table 7 5 Weight of the DBS39...

Страница 34: ...nverted into 48 V DC power for the use of the BBU 7 6 2 Power Input of the RRU Table 7 7 lists the power input for the RRU Table 7 7 Power input for the RRU Power Type Nominal Value Allowed Range 48 V DC 48 V DC 36 V DC to 57 V DC 220 V AC 220 V AC 176 V AC to 280 V AC With a matched power conversion system the 220 V AC power can be converted into 48 V DC power for the use of the RRU 7 7 Power Con...

Страница 35: ...e between the BBU and the RRU CPRI 6 1 25 Gbit s SFP socket BBU supports 52 route E1 T1 signals or 7 route FE optical electricity signals by adding UTRP The CPIR interface can use optical port The multi mode optical cable can extend up to 500 m and the single mode optical cable can extend up to 40 km The CPIR interface can also use electric port with a shielded twisted pair cable The bandwidth of ...

Страница 36: ...the BBU Table 7 12 Other external ports on the BBU Application Port Quantity Connector Power supply 48 V DC 1 3V3 male GPS signal input 1 SMA female BITS clock signal input 1 SMA female Clock signal input output 13 MHz clock signal output 1 SMA male Testing 1 USB connector Commissioning Serial or Ethernet 1 RJ45 7 8 4 Transmission Port on the RRU Table 7 13 lists the transmission port on the RRU T...

Страница 37: ...duplexing 2 DIN type round and waterproof Radio frequency RRU RX interconnecting 1 DB2W2 connector 7 9 Lightning Protection Specifications The surge protection specifications are based on the surge waveform of 8 20 µs Unless otherwise specified the surge current refers to a nominal discharge current 7 9 1 Lightning Protection Specifications for the BBU Table 7 16 lists the lightning protection spe...

Страница 38: ...device 8 kA GPS signal input Common mode GPS lightning protection device 20 kA Differential mode Dry contact alarms Common mode 250 A 7 9 2 Lightning Protection Specifications for the RRU Table 7 17 lists the lightning protection specifications for the external ports on the RRU Table 7 17 Lightning protection specifications for the external ports on the RRU Application Lightning Protection Mode Su...

Страница 39: ...U Table 7 19 lists the operating environment of the RRU Table 7 19 Operating environment of the RRU Parameter Specification Temperature 40 C to 50 C without solar radiation 40 C to 45 C with solar radiation Relative humidity 5 to 100 Absolute humidity 1 g m3 to 30 g m3 Air pressure 70 kPa to 106 kPa 7 11 EMC The DBS3900 meet the electromagnetic compatibility EMC requirements in compliance with the...

Страница 40: ...h the following standard in terms of transportation environment ETSI EN 300019 1 2 V2 1 4 2003 04 Class 2 3 Public transportation 7 15 Anti Seismic Protection The BBU complies with the following standard in terms of anti seismic protection IEC 60068 2 57 1999 11 The DBS3900 comply with the following standard in terms of anti seismic protection NEBS GR63 zone4 7 16 Operating Requirements The BBU co...

Страница 41: ...r air conditioner This meets the economical and speedy deployment The external cabling ports of the BBU and RRU are located on the front panel and at the bottom with silkscreen attached This makes cabling easy Huawei provides all necessary auxiliary devices for the DBS3900 such as AFB outdoor SPD APM and EPS4815A power conversion module This package solution covers the power distribution lightning...

Страница 42: ...PL of acoustic noise produced by the operating BBU is lower than 45 dBA as specified in the ETS300 753 standard The RRU operates quietly A 3 Storage Environment The DBS3900 complies with the following standard in terms of the storage environment ETSI EN 300019 1 1 V2 1 4 2003 04 Class 1 2 Weatherprotected not temperature controlled storage locations A 4 Transportation Environment The DBS3900 compl...

Страница 43: ...cations The RRU complies with the following standard in terms of the working environment 3G TS25 141 V3 0 0 ETSI EN 300019 1 4 V2 1 2 2003 04 Class 4 1 Non weatherprotected locations A 6 Anti Seismic Performance The anti seismic performance of the BBU complies with the IEC 60068 2 57 1999 11 The anti seismic performance of the RRU complies with the NEBS GR63 zone4 ...

Страница 44: ...he antenna C Carrier A sine wave whose bandwidth is much higher than the bandwidth of a signal and which can be identified by amplitude frequency and phase H Handover The transfer of a user s connection from one radio channel to another can be the same or different cell R Receive diversity The most common type of diversity where a mobile device uses two physically separate antennas to combine sign...

Страница 45: ...ntrol BUS D DAFM Antenna Front end Module for DTRU BTS DBUS Data BUS DCDU Direct Current Distribution Unit DDPU Dual Duplexer Module for DTRU BTS DPMU Power and Environment Monitoring Unit DTRU Double Transceivers Digital and Radio Frequency Module DRFU Double Radio Filter Unit E EDGE Enhanced Data rates for GSM Evolution EFR Enhanced full rate speech codec EGPRS Enhanced GPRS EMI External Machine...

Страница 46: ...ontrol module GMSK Gaussian Minimum Shift frequency Keying GPRS General Packet Radio Service GSM Global System for Mobile communications H HR Half Rate M MMI man machine interactive O OMC Operation and Maintenance Center P PSU Power Supply Unit R RF Radio Frequency RH Relative Humidity S SDH Synchronous Digital Hierarchy T TCH Traffic Channel TMA Tower Mounted Amplifier ...

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