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ZXC10 CBTS I2CDMA2000
Compact Base Transceiver Station-I2
Hardware Manual
ZTE CORPORATION
ZTE Plaza, Keji Road South,Hi-Tech Industrial Park,Nanshan District, Shenzhen,P. R. China518057
Tel: (86) 755 26771900 800-9830-9830Fax: (86) 755 26772236URL:
0H
http://support.zte.com.cn
E-mail: 1Hdoc@zte.com.cn
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LEGAL INFORMATION
Copyright 2006 ZTE CORPORATION.
The contents of this document are protected by copyright laws and international treaties. Any reproduction ordistribution of this document or any portion of this document, in any form by any means, without the prior writtenconsent of ZTE CORPORATION is prohibited. Additionally, the contents of this document are protected bycontractual confidentiality obligations.
All company, brand and product names are trade or service marks, or registered trade or service marks, of ZTECORPORATION or of their respective owners.
This document is provided as is, and all express, implied, or statutory warranties, representations or conditionsare disclaimed, including without limitation any implied warranty of merchantability, fitness for a particular purpose,title or non-infringement. ZTE CORPORATION and its licensors shall not be liable for damages resulting from theuse of or reliance on the information contained herein.
ZTE CORPORATION or its licensors may have current or pending intellectual property rights or applicationscovering the subject matter of this document. Except as expressly provided in any written license between ZTECORPORATION and its licensee, the user of this document shall not acquire any license to the subject matter
herein.
The contents of this document and all policies of ZTE CORPORATION, including without limitation policies related tosupport or training are subject to change without notice.
Revision History
Date Revision No. Serial No. Reason for Revision
17/03/2007 R1.0 sjzl20061487 First edition
08/06/2007 R1.1 sjzl20061487 CBM Configuration
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ZTE CORPORATION
Values Your Comments & Suggestions!Your opinion is of great value and will help us improve the quality of our productdocumentation and offer better services to our customers.
Please fax to: (86) 755-26772236; or mail to Documentation R&D Department,ZTE CORPORATION, ZTE Plaza, A Wing, Keji Road South, Hi-Tech Industrial Park,Shenzhen, P. R. China 518057.
Thank you for your cooperation!
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ZXC10 CBTS I2 CDMA2000 Compact Base Transceiver Station-I2 Hardware Manual
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Contents
About this Manual............................................................. i
Purpose................................................................................ i
Intended Audience ................................................................. i
Prerequisite Skill and Knowledge.............................................. i
What is in This Manual........................................................... ii
Related Documentation.......................................................... ii
Conventions ......................................................................... ii
How to Get in Touch............................................................. iii
Chapter 1..........................................................................1
CBTS I2 Cabinet ...............................................................1
CBTS I2 Configuration Types ............................................2
Cabinet Features.............................................................2
Engineering Specifications ................................................3
Physical Dimensions ..............................................................3
Weight & Ground Bearing Capacity ..........................................4
Power Supply Requirements ...................................................4
Grounding Requirements........................................................ 4
Temperature and Humidity.....................................................5
Power Consumption ..............................................................5
Cabinet Structure ............................................................6
Outer Structure ....................................................................6
Inner Structure................................................................... 10
Backplane.......................................................................... 13
Cabinet Interfaces.........................................................14
CBTS I2 Plug-in-Box......................................................18
RFE/DPA Shelf .................................................................... 18
CBM/TRX Shelf ................................................................... 20
TRX/BDS Shelf ................................................................... 21
Fan................................................................................... 24
Power Supply ...............................................................25
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DC Busbar..........................................................................26
RPD ..................................................................................27
Signal Flow ..................................................................28
Forward Signal Flow ............................................................28
Reverse Signal Flow.............................................................30
Chapter 2........................................................................33
CBTS I2 Boards ..............................................................33
Boards List...................................................................34
CBM............................................................................ 35
CCM............................................................................ 45
DSM............................................................................50
SNM............................................................................ 57
CHM............................................................................61
CHM0 ................................................................................62
CHM1 ................................................................................67
CHM2 ................................................................................72
RIM............................................................................. 77
RIM1 .................................................................................78
RIM3 .................................................................................83
RMM ........................................................................... 88
RMM 5 ...............................................................................91
RMM6................................................................................94
RMM7.............................................................................. 100
BIM7......................................................................... 101
GCM.......................................................................... 101
SAM.......................................................................... 101
SAM4 .............................................................................. 101
SAM3 .............................................................................. 101
SAM5 .............................................................................. 101
TRX .......................................................................... 101
Crest factor_reduction TRX ................................................. 101
Digital Predistortion TRX..................................................... 101
DPA .......................................................................... 101
PIM........................................................................... 101
RFE........................................................................... 101
RFE_A ............................................................................. 101
RFE_B ............................................................................. 101
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Chapter 3......................................................................101
Cabinet External Cables & Components......................101
GPS Antenna Feeder System ........................................ 101
GPS Antenna.................................................................... 101
GPS Feeder...................................................................... 101
GPS Feeder Connector ....................................................... 101
Main Antenna Feeder System........................................ 101
Antenna .......................................................................... 101
Main Feeders.................................................................... 101
Main Feeder Connector ...................................................... 101
Jumpers .......................................................................... 101
Jumper Connectors ........................................................... 101
Lightning Arrester ............................................................. 101
Grounding Clip ................................................................. 101
Feeder Fixing Clip ............................................................. 101
Monitoring System ...................................................... 101
Temperature and Humidity Sensor ...................................... 101
Smoke Sensor .................................................................. 101
Door Sensor..................................................................... 101
Infrared Sensor ................................................................ 101
External Monitoring Cable .................................................. 101
Extended Monitoring Cable ................................................. 101
Grounding System ...................................................... 101
Grounding Copper Busbar .................................................. 101
Grounding Tandem Cable ................................................... 101
DC Power Cable .......................................................... 101
Fast Ethernet Cables.................................................... 101
BDS Interconnection Cable ........................................... 101
Trunk System............................................................. 101Trunk Cable Conversion ..................................................... 101
Trunk Cables.................................................................... 101
75 Coaxial E1 Cable ....................................................... 101
120 Twisted Pair E1 Cable............................................... 101
100 T1 Cable ................................................................. 101
Fiber Cables ............................................................... 101
Chapter 4......................................................................101
CBTS I2 Internal Cables ..............................................101
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Power Cables.............................................................. 101
Working Block Diagram...................................................... 101
TPB - RCB Interconnection Cable ......................................... 101
RCB - DC Busbar Interconnection Cable................................ 101
-48 VGND Input Interface - TPB Interconnection Cable ........... 101
DC Busbar - Backplane Interconnection Cable ....................... 101
RPF - DC Busbar Interconnection Cable ................................ 101
DC Busbar - Cabinet Grounding Interconnection Cable............ 101
RF Cables .................................................................. 101
DPA - RFE Interconnection Cables........................................ 101
CBM-BIM_7E Interconnection Cable ..................................... 101
GCM - Lightening Arrester Interconnection Cable ................... 101
Cabinet Interconnection Cable............................................. 101
Monitoring Cables ....................................................... 101
Monitoring Cable 1 ............................................................ 101
Monitoring Cable 2 ............................................................ 101
GPS Lightning Arrester................................................. 101
Appendix A...................................................................101
PWSB I2 Cabinet..........................................................101
Salient Features.......................................................... 101Power Supply Standards .............................................. 101
Dimensions ................................................................ 101
Structure ................................................................... 101
Backplane ........................................................................ 101
Top Interfaces .................................................................. 101
PMM................................................................................ 101
PRM ................................................................................ 101
PPD................................................................................. 101
Appendix B ...................................................................101
Abbreviations ...............................................................101
Figures..........................................................................101
Tables...........................................................................101
Index ............................................................................101
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Confidential and Proprietary Information of ZTE CORPORATION i
About this Manual
Purpose
ZXC10 CBTS I2 is a ZXC10 series product based on IP (internetprotocol) technology developed by ZTE Corporation. ZXC10CBTS I2 meets customer requirements for a system that
features high capacity with multiple services, transmissionmodes and applications.
ZXC10 CBTS I2 Hardware Manual covers the following topics:
Hardware System Architecture
Configurations
Block Diagram
Hardware Boards
Internal/External Interfaces
Cable Connections
Jumpers
For users ease, this manual abbreviates ZXC10 CBTS I2 as CBTS,ZXC10 BSS as BSS, and ZXC10 BSC as BSC.
Intended Audience
This document is intended for engineers and technicians whoperform operation activities on the ZXC10 CBTS.
Prerequisite Skill and Knowledge
To use this document effectively, users should have a generalunderstanding of wireless telecommunications technology.Familiarity with the following is helpful:
ZXC10 CBTS system and its various components
User interfaces on Compact Base Transceiver Station (CBTS)
Local operating procedures
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What is in This Manual
This Manual contains the following chapters:
T ABL E 1 C HAPT ER S UM M ARY
Chapter Summary
Chapter 1
CBTS I2 Cabinet
Introduces the ZXC10 CBTS CabinetOverview and structure.
Chapter 2
CBTS I2 Boards
Introduces the ZXC10 CBTS Boardsoverview, principles and functions.
Chapter 3
Cabinet External Cables& Components
Introduces the ZXC10 CBTS Cabinet
external cables and different components.
Chapter 4
CBTS I2 Internal Cables
Introduces the ZXC10 CBTS internalcables.
Appendix A
PWSB I2 Cabinet
Introduces the ZXC10 PWSB I2 cabinet
Related Documentation
The following documentation is related to this manual:
ZXC10 CBTS I2 Compact Base Transceiver Station-I2General Description
ZXC10 CBTS I2 Compact Base Transceiver Station-I2Installation Manual
ZXC10 CBTS I2 Compact Base Transceiver Station-I2Maintenance Manual
Conventions
ZTE documents employ the following typographical conventions.
T ABL E 2 TYP O G RAPHI CAL C O NVENT I O NS
Typeface Meaning
Italics References to other Manuals and documents.
Quotes Links on screens.
Bold Menus, menu options, function names, inputfields, radio button names, check boxes, drop-down lists, dialog box names, window names.
TypographicalConventions
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About this Manual
Confidential and Proprietary Information of ZTE CORPORATION iii
Typeface Meaning
CAPS Keys on the keyboard and buttons on screensand company name.
Const ant wi dt h Text that you type, program code, files anddirectory names, and function names.
[ ] Optional parameters.
{ } Mandatory parameters.
| Select one of the parameters that are delimitedby it.
Note: Provides additional information about acertain topic.
Checkpoint: Indicates that a particular step needsto be checked before proceeding further.
Tip: Indicates a suggestion or hint to make thingseasier or more productive for the reader.
T ABL E 3 MO USE OPERAT I O N CO NVENT I O NS
Typeface Meaning
Click Refers to clicking the Main mouse button (usuallythe left mouse button) once.
Double-click Refers to quickly clicking the Main mouse button(usually the left mouse button) twice.
Right-click Refers to clicking the secondary mouse button(usually the right mouse button) once.
Drag Refers to pressing and holding a mouse button andmoving the mouse.
How to Get in Touch
The following sections provide information on how to obtain
support for the documentation and the software.
If you have problems, questions, comments, or suggestionsregarding your product, contact us by e-mail atsupport@zte.com.cn. You can also call our customer supportcenter at (86) 755 26771900 and (86) 800-9830-9830.
ZTE welcomes your comments and suggestions on the qualityand usefulness of this document. For further questions,comments, or suggestions on the documentation, you cancontact us by e-mail at doc@zte.com.cn; or you can fax yourcomments and suggestions to (86) 755 26772236. You can alsobrowse our website at http://support.zte.com.cn, which contains
Mouse
OperationConventions
CustomerSupport
DocumentationSupport
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various interesting subjects like documentation, knowledge base,forum and service request.
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Confidential and Proprietary Information of ZTE CORPORATION 1
C h a p t e r
1
CBTS I2 Cabinet
The chapter covers the following topics:
CBTS I2 Types
Cabinet Features
Engineering Specifications
Cabinet Structure
Cabinet Interfaces
CBTS Plug-in-Box
Power Supply
Signal Flow
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CBTS I2 Configuration TypesCBTS I2 can be characterized in to two types based on the
configuration. Following are the CBTS I2 configuration types: CBTS I2 with CBM configuration
CBTS I2 with BDS subsystem configuration
Cabinet FeaturesThe entire CBTS I2 system solution is based upon IP platform.Its structural design features are CBTS cabinet stack-processingand flexible networking configuration. The cabinet structure has
the following characteristics: Compact BTS.
High equipment integration and large system capacity.
Leading technologies.
Far-sightedness (powerful upgrading compatibility).
Flexible application (provides networking structures asrequired by users).
The CBTS I2 is one of the indoor macro base transceiver stationmodels in the all IP BTS series. The model main characteristics
are high system integration and large system capacity.
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Engineering SpecificationsEngineering specifications include:
Physical dimensions
Power supply requirements
Grounding requirements
Humidity temperature
Power consumption
Note:All the engineering specifications are same of both typesof CBTS I2 except that power consumptions because in CBTS I2with CBM configuration all BDS boards are integrated on singleboard.
Physical Dimensions
Cabinet dimensions (Height (H) x Width (W) x Depth (D)):850 mm (33 7/16 in) x 600 mm (23 10/16 in) x 600 mm (2310/16 in)
Mounting base Dimensions: H x W x D = 54 mm (2 2/16 in) x600 mm (23 10/16 in) x 600 mm (23 10/16 in).
505HFigure 1 shows CBTS cabinet and base dimensions.
F I G URE 1 CABI NET D I M ENSI O NS
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506H
Figure 2 shows the cabinet base dimensions.
F I G URE 2 C ABI NET B ASE D I M ENSI O NS
Weight & Ground Bearing Capacity
Table 4 shows the Gross Equipment Weight and Ground BearingCapacity of the Equipment Room.
T ABL E 4 W EI G HT AND G RO UND BEARI NG C APACI T Y
WeightConfiguration
Kg Pounds
4 Carrier and 1 sector (4C3S) 126.5 278.88
4C3S 155.5 342.81
Power Supply Requirements
Table 5 shows the Normal working voltage of CBTS CMB.
T ABL E 5 N O RM AL W O RKI NG VO L T AG E
SN Nominal Value Allowed Fluctuation
1 -48 V DC -40 ~ -57 V DC2 220 V AC 150 ~ 300 V AC, 45 Hz ~ 65 Hz
3 110 V AC 85 ~ 135 V AC, 45 Hz ~ 65 Hz
Grounding Requirements
Joint grounding resistance 1and BTS grounding resistance 5 .
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Temperature and Humidity
Table 6 shows the BTS normal working environmentrequirements.
T ABL E 6 NO RM AL WO RKI NG ENVI RO NM ENT REQ UI REM ENT S
Equipm
entTemperature Humidity
WorkingTemperature
WorkingTemperatureRecommended
WorkingHumidity(%RH)
WorkingHumidityRecommended (%RH)
CBTS I2
-5 ~ 45
23 ~ 113 F
15 ~ 35
59 ~ 95 F
15 ~ 93 40 ~ 60
Power Consumption
Table 7 Shows the BTS power consumption during normalworking.
T ABL E 7 PO WER CO NSUM PT I O N DURI NG NO RM AL W O RKI NG
TypicalConfiguration
OutputPower
(W)
1xMaximu
m PowerConsumption(Full-Loading)
(W)
DO
Maximum PowerConsumption(Full -Loading)
(W)
1xTypical
PowerConsumption(Half -Loading)
(W)
DOTypical
PowerConsumption(Half-Loading)
(W)
1C3S 40 1210 1220 1090 1060
4C3S 40 1250 1320 1140 1150
5C3S 40 2360 2440 2130 2110
8C3S 40 2400 2530 2170 2210
1C3S 60 1720 1730 1490 1430
4C3S 60 1760 1820 1540 1530
5C3S 60 3370 3450 2930 2860
8C3S 60 3420 3550 2970 2960
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Note:
CBTS I2 with CBM module supports only 12CS configurationfor 1X services and 3CS configuration for Do services.
Because CCM, DSM, GCM, RIM, RMM and CHM boards arenow integrated on single CBM board that reduces the powerconsumption of 150W of CBTS I2 with CBM configuration.
Cabinet StructureThe CBTS structure can be characterized in to following types:
Outer Structure
Inner Structure
Backplane
Outer Structure
CBTS cabinet consists of following components:
Front door
Back door
Cabinet base
Converter panel
Top interfaces
Note:Both types of CBTS I2 have the same outer structure.
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Figure 3 shows the CBTS cabinet exterior view.
F I G URE 3 CABI NET E XT ERI O R V I EW
Front Door
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Figure 4 shows the cabinet back view.
F I G URE 4 C ABI NET B ACK V I E W
Figure 5 shows the cabinet base.
F I G URE 5 C ABI NET B ASE
Back Door
Cabinet Base
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518H
Figure 6 shows the installed converter panel.
F I G URE 6 CO NVERT ER P ANEL
1. M3 X 12 bolt 2. Converter
3. Cabling tray/pipe 4. M4 x 10 bolt
519HThe converter panel is only used for 75 ohm E1 cable. 520HFigure 7
shows converter panel.
F I G URE 7 CO NVERT ER P ANEL
There are sixteen different E1 indicators on right side and sixmonitoring and control switches on converter panel on left side.
Switch input 1(SW_IN1) and switch input 2 (SW_IN2) aretwo converter switches, which transfer switch values.
Control output (CTRL_OUT) transfers control output values.
ConverterPanel
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Smog monitor (SMOG_MON) connection transfers smogsensor values.
Humidity and temperature monitor (HUM_TEMP_MON)connection transfers humidity and temperature values.
Infrared monitor (INFRARED_MON) transfers infrared values.
The 100 T1 and 120 E1 cables can be connected directlywith the CBTS top interfaces.
Inner Structure
The inner structure of ZXC10 CBTS cabinet consists of followingcomponents:
RFE/DPA shelf TRX/BDS shelf
Fan shelves
Figure 8 shows the unpopulated cabinet front view withouthinged door and boards.
F I G URE 8 UNPO PUL AT ED C ABI NET FRO NT V I EW
Note:In case of CBTS I2 with CBM configuration type TRX/BDS
plug-in-box is named as TRX/CBM plug-in-box.
UnpopulatedCabinet
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502H
Figure 9 shows a fully configured CBTS I2 cabinet with CBMconfiguration.
F I G URE 9 FUL L Y CO NF I G URED CBTS I2 C ABI NET WI T H CBM
Fully ConfiguredCabinet
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Figure 10 shows a fully configured CBTS I2 cabinet with CBMconfiguration.
F I G URE 10 F UL L Y C O NF I G URED CBTS I2 C ABI NET WI T H BDS
C O NF I G URAT I O N
Note: For readers ease, above figure does not show someindicator and interfaces name, as they will be covered in detail inchapter 2.
A single fully Populated CBTS cabinet consists of the followingcomponents:
BDS subsystem
RFS subsystem
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Backplane
Backplane integrates the CBTS boards together and suppliespower to the related boards.
Figure 11 shows the backplane structure.
F I G URE 11 CBTS B ACKPL ANE
1. SMA Connectors 2. Power Interfaces3. Monitoring Interfaces 4. DC Busbar
SMA connectors connect CBTS with the extended cabinet. Powerinterfaces connects CBTS backplane with -48 VDC, -48 VGNDand GNDD interfaces located on the DC busbar. Monitoringinterfaces connect CBTS backplane with internal monitoringequipments.
Overview
Structure
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Cabinet Interfaces510HFigure 12 shows the top interfaces physical interfaces.
F I G URE 12 CBTS TO P
1. Extended Monitoring Interface 2. Extended BDS Interface
3. Room Monitoring Interface 4. FE Interfaces
5. E1/T1 Interfaces 6. Power and Grounding Interfaces
7. Feeder Outlets
Extended Monitoring Interface
DB44 type connector connects CBTS with the extendedcabinet monitoring units.
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511H
Figure 13 shows the extended monitoring interface layout.
F I G URE 13 EXT ENDED MO NI T O RI NG I NT ERF ACE
Extended BDS Interface
DD78 type connector connects CBTS with the extended BDScabinet.512H
Figure 14 shows the extended BDS interface.
F I G URE 14 EXT ENDED BDS I NT ERF ACE
Note: ZXC10 CBTS CMB doesnt support any extended BDS.This interface can be used for future expansion.
Room Monitoring Interface
DB44 type connector connects CBTS with external roommonitoring units.
513HFigure 15 shows the room monitoring interface layout.
F I G URE 15 RO O M MO NI T O RI NG I NT ERF ACE
FE Interfaces
FE interfaces connect CBTS with BSC, Extended BDS, andmedia and signaling testing equipment. OWT is a RJ11interface that connects CBTS with the order wire telephone.If using ZTE PWSB cabinet, use PWSB interface to connectCBTS with PWSB cabinet. Otherwise use EXT_MON interface.
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RMM board software can be updated using R_TEST interface.CCM board software can be updated using S_TEST interface.
514HFigure 16 shows the FE interfaces layout.
F I G URE 16 FE INT ERF ACES
Note: CBTS I2 with CBM configuration supports only BSC_FE,T_TEST, O_PH, PWSB, EXT_COM and S_FE1 interfaces. Otherinterfaces are not used by CBTS and are reserved for futureupgradation.
E1/T1 Interfaces
Two DB44 type connectors are located on CBTS top thatconnects either with BSC or extended BTS.
515HFigure 17 shows the CBTS E1/T1 Interfaces layout.
F I G URE 17 E1 /T1 INT ERF ACES
Note:CBTS CBM supports eight E1/T1 interfaces.
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Power and Grounding Interfaces
PE, -48 VGND, and -48 V connect the input power andgrounding sources.
516H
Figure 18 shows the power interfaces.
F I G URE 18 PO WER AND GRO UNDI NG I NT ERF ACE L AYO UT
PE, -48 VGND, and -48 V connect the input power andgrounding sources.
Feeder Outlets
Main feeder from the antenna passes through these outletsand connects with RFE boards.
517HFigure 19 shows the feeder outlets layout.
F I G URE 19 FEEDER OUT L ET
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CBTS I2 Plug-in-BoxThis section describes the following components:
RFE/DPA Shelf
CBM/TRX Shelf (for CBTS I2 with CBM configuration)
BDS/TRX Shelf
Fan Shelf
Note: RFE/DPA shelf is same for both types of CBTS I2 butBDS/TRX shelf is used in CBTS I2 with BDS subsystemconfiguration and CBM/TRX shelf is used in CBTS I2 with CBMconfiguration. Working principle is different of both plug-in-boxes.
RFE/DPA Shelf
RFE/DPA shelf integrates RFE and DPA boards through thebackplane.
Figure 20 shows the RFE/DPA shelf inner view with fans installedbelow in the fan shelf.
F I G URE 20 RFE/DPA PL UG - I N BO X ENL ARG ED V I EW
Radio Frequency Subsystem (RFS) implements forward/reverselink processing, which converts forward baseband signals intoamplified RF signals, and reverse RF signals to baseband signals.
RFS subsystem consists of following board types:
Transmitter and Receiver (TRX)
RF Management Module (RMM)
Digital Pre-distortion Power Amplifier (DPA)
Overview
Structure &Configuration
Description
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PA Interface Module (PIM)
Radio Frequency End (RFE)
Note:In case of CBTS I2 with CBM configuration RMM board is
integrated on CBM module but in case if CBTS I2 with BDSsubsystem configuration RMM individual board of RFS subsystem.
Figure 21 shows the RFS subsystem block diagram of CBTS I2with BDS subsystem configuration.
F I G URE 21 RFS SUBSYST EM BL O CK D I AG RAM
RFE
TRX
BDS
RMM
RFE RFE
TRX TRX
DPA DPA DPA
Note: Above figure does not show the PIM board. PIM boardfunctions as a monitoring unit, which collects the RFE and DPArunning status information.
RFS subsystem performs the following functions:
RFS Forward link
Receives signals from the RIM board, performs D/Aconversion, filtering, median-frequency I/Q modulation, bandpass filtering, transmitting link gain control, signalamplification, and up-conversion on forward data.
RFS Reverse link
Receives signals from the RFE, performs down-conversion,signal amplification, band pass filtering, AGC, and median-frequency I/Q demodulation on reverse data.
Working BlockDiagram
Functions
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CBM/TRX Shelf
CBM/TRX shelf integrates TRX and CBM subsystem boardsthrough the backplane.
Figure 22 shows the CBM/TRX shelf inner view with fansinstalled in the fan shelf below.
F I G URE 22 CBM/TRX S HEL F INNER ST RUCT URE
Note: In CBM/TRX shelf, slot number six is fixed for CBMmodule.
Overview
Structure &Configuration
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Figure 23 shows the RFS subsystem block diagram with CBMconfiguration.
F I G URE 23 RFS SUBSYST EM BL O CK D I AG RAM
TRX/BDS Shelf
TRX/BDS shelf integrates TRX and BDS subsystem boardsthrough the backplane. 501H
Figure 24 shows the TRX/BDS shelf inner view with fans installedbelow in the fan shelf.
F I G URE 24 TRX/BDS SHEL F I NNER ST RUCT URE
Working BlockDiagram
Structure &Configuration
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BDS subsystem serves as the CBTS communication controlcenter. In addition, it implements baseband signal processingsuch as baseband signals modulation and demodulation, linearsummation, Abis interface functions, and cell sharing.
BDS subsystem contains the following boards:
CBM
Baseband Interface Module (BIM)
Site Alarm Module (SAM)
Figure 25 shows the CBM/TRX working block diagram.
F I G URE 25 CBM /TRX W O RKI NG B L O CK D I AG RAM
Description
Working BlockDiagram
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Figure 26 shows the BDS/TRX working block diagram.
F I G URE 26 - BDS SY ST EM BL O CK D I AG RAM
Note: Above figure does not show the BIM board. BIM boardfunctions as an interface unit, which either connects BDS withBSC or extended BTS.
Following are the functions of BDS subsystem:
BDS Forward Signal Processing
BSC transmits voice and data IP packets to the CBTSthrough Abis. DSM board performs Abis protocol termination.SNM board is an alternate way to receive voice and datapackets from BSC. SNM board converts Abis low-speed dataand SDH STM-1 frames to long-distance Abis data and sendsit to the DSM board. DSM board transmits Abis data to theCCM board for switching towards the relevant CHM board ofMain BDS subsystem or secondary BDS subsystem for CDMA
baseband forward modulation. RIM board multiplexes theforward data and transmits it to the RFS system. GCM boardsupplies reliable clock sources for CBTS boards.
BDS Reverse Signal Processing
RFS system sends reverse signals to the RIM board forbaseband demodulation. RIM board demultiplexes reversesignals and transmits these signals to the CHM board. CHMboard converts the reverse voice and packet data into frames,and transmits data as IP packets to the CCM board. CCMboard switches IP packets and then routes them to the DSMboard for Abis protocol processing. Finally, DSM board
Functions
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transmits data to the BSC either directly using the Abisinterface or through the SNM board.
FanFan boxes are installed at the bottom and in the middle ofcabinet. Bottom fan box has three fans because BDS producesmore heat. Middle fan box has two fans because RFS cabinetproduces less heat. These fan boxes perform air ventilation andmaintain the cabinet temperature.
Figure 27 shows the structure of middle fan box.
F I G URE 27 M I DDL E F AN BO X S T RUCT URE
Overview
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Figure 28 shows the structure of bottom fan box.
F I G URE 28 BO T T O M F AN B O X ST RUCT URE
Note:In case of CBTS I2 with CBM configuration there are twofan boxes in middle fan shelf and one fan box in bottom fan shelf.
Power SupplyCBTS cabinet can support 220 VAC or 24/-48 VDC power supplyinput.
If power supply is AC, then an additional 220 VAC to -48VDCconverter cabinet is required. ZTE provides 220 VAC to -48VDC converter cabinet (ZXC10 PWSB I2 cabinet).
For additional information about ZXC10 PWSB I2 refer toAppendix A.
If power supply is 24 VDC, then an additional 24 VDC to -48VDC converter cabinet is required. ZTE provides 24 VDC to-48VDC converter cabinet (ZXC10 PWSC I2 cabinet).
For additional information about ZXC10 PWSC I2 refer toAppendix B.
If power supply is -48 VDC, connect directly to the powerinterfaces located at the CBTS cabinet top.
PowerRequirements
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Provide CBTS with uninterrupted power supply (diesel enginegenerator set and storage battery), so that it can work normallyin case of main power supply failure.
DC Busbar
A DC busbar is located at the rear of CBTS cabinet. DC busbardistributes -48 V DC power supply and GND to the entire CBTScomponents.
508HFigure 29 shows the DC busbar location and enlarged view.
F I G URE 29 DC BUSBAR L O CAT I O N AND ENL ARG ED V I EW
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RPD
RFS Power Distribute (RPD) consists of following parts:
RFS Power Filter (RPF)
Thunder Protective Board (TPB)
RFS Circuit Breaker (RCB)
622HFigure 30 shows the RPD block Diagram.
F I G URE 30 RP D B L O CK D I AG RAM
Different RPD units perform the following functions:
DC input: Performs DC power input, switch control, andshort-circuit protection.
Power filter: Filters power interference.
Thunder protection: Absorb lightning strokes and surgesfrom the DC side.
Lightening protection unit alarm monitoring: Providelightening protection unit working status and alarm indication.
Input voltage: -48 VDC
Current: 100 A
RPF Insertion loss 25 dB
Overview
Working Block
Diagram
Functions
TechnicalIndices
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Signal FlowCBTS CBM can provide a 12CS configuration for 1X and 3CS
configuration for DO services.
Forward Signal Flow
521H
Figure 31 shows the forward signal flow with CBM configuration.
F I G URE 31 F O RWARD D I RECT I O N S I G NAL FL O W WI T H CBM CO NF I G URAT I O N
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Figure 32 shows the forward direction signal flow.
F I G URE 32 F O RWARD D I RECT I O N S I G NAL FL O W WI T H BDS CO NF I G URAT I O N
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Reverse Signal Flow
Figure 33 shows the reverse signal flow.
F I G URE 33 RE V E R S E S I G NAL FL O W WI T H CBM CO NF I G URAT I O N
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Figure 34 shows the reverse signal flow of CBTS I2 with BDSsubsystem configuration.
F I G URE 34 RE V E R S E S I G NAL FL O W WI T H BDS CO NF I G URAT I O N
RFE RFE RFE
TRX TRX TRX
RMM
RIM
CHM 1~4
CCM 1~2
SNM DSM
Sector
RX Antenna
Sector
RX Antenna
Sector
RX Antenna
Note:In above figures, CHM 1~4 means 4 CHM boards, CCM 1~2 means 2 CCM boards. CCM boards operate in master/slavemode.
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C h a p t e r
2
CBTS I2 Boards
This chapter describes types, Working Block Diagram and
functions, panel structure, layout, jumpers, and externalinterfaces of the following CBTS boards:
CBM BIM7
CCM GCM
DSM SAM
SNM TRX
CHM DPA
RIM PIM
RMM RFE
OIB
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Caution: Since CBTS board have many integrated circuits.Strictly follow the operation procedures, to avoid damages tocircuit board resulting from the static electricity.
Boards List523HTable 8 illustrates different types of CBTS boards list and theircorresponding shelf.
T ABL E 8 CBTS B O ARDS L I ST
BoardName
Full NameInstallation
location
CBM Compact BDS Module CBM/TRXCCM0 Communication Control Module 0 BDS/TRX
CCM6 Communication Control Module 6 BDS/TRX
GCM3 GPS Control Module 3 BDS/TRX
GCM4 GPS Control Module 4 BDS/TRX
SAM3 Site Alarm Module3 BDS/TRX
SAM4 Site Alarm Module4 BDS/TRX
SAM5 Site Alarm Module5 BDS/TRX
CHM0 Channel Handling Module 0 BDS/TRX
CHM1 Channel Handling Module 1 BDS/TRX
CHM2 Channel Handling Module 2 BDS/TRX
DSM Data Service Module BDS/TRX
SNM SDH Network Module BDS/TRX
RIM1 Radio Frequency InterfaceModule1
BDS/TRX
RIM3 Radio Frequency InterfaceModule2
BDS/TRX
BIM7_C BDS Interface Module7 C RFE/DPA
BIM7_D BDS Interface Module7 D RFE/DPA
DPA Digital Power Amplifier RFE/DPA
RFE_A Radio Front End A RFE/DPA
RFE_B Radio Front End B RFE/DPA
DigitalPredistortionTRX
Digital Predistortion Transceivermodule
BDS/TRX
Crestfactor_reduction TRX
Crest factor_reductionTransceiver module
BDS/TRX
PIM Power Amplifier Interface Module RFE/DPA
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CBMThe Compact Baseband Module (CBM) integrates all modules of
earlier baseband subsystem and it also combines some modulefunctions of RFS subsystem. Primarily the CBM integrates thefunctions of CHM, CCM, DSM, GCM, RIM, and RMM.
Figure 35 shows the working block diagram of CBM.
F I G URE 35 W O RKI NG BL O CK D I AG RAM O F CBM
Following are the functions of different units of CBM module:
CPU
CPU handles signals in the board.
GPS Unit
This unit mainly performs following functions:
It receives GPS satellite system signals, extracts andgenerates PP1S signals and navigation messages.
In addition it produces PP2S, 16CHIP and 30 MHz signalsand relevant Time of Date (TOD) messages using 1PPSsignals as the phase locking reference.
It performs system clock distribution.
ABIS Interface Unit
This unit mainly performs following functions:
Eight E1/T1 interfaces processing;
FE interface processing;
CUDP/MP/HDLC protocol processing.
Description
Working Block
Diagram
Functions
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Note: E1/T1 interface matching, mode selection and lightningprotection processing is carried out on BIM.
Baseband Processing Unit
This unit mainly performs following functions:
6700 baseband processing
6800 baseband processing
Baseband data format conversion
Note:
Module mother board has only one set of CSM6700 chipgroup.
Mother board has a connecting slot for baseband sub-card,where CSM6700 sub-card or CSM6800 sub-card can beplugged in.
Driving processing CPU-BMP needed by CSM6800 will beintegrated onto sub-card.
CSM6700 sub-card contains processor.
Supporting 12-sector sharing and providing 12-sectoraddition.
Optical Interface Board (OIB) Unit
This function unit mainly performs partial RIM functions,
which include: Forward: Demultiplexes baseband data by the ratio of
1:2 and sends one route directly to RFS unit, andmultiplexes the other route by the ratio of 3:1 togenerate HDLC frame and connects with remote RMMthrough OIB. While redefining baseband and datainterfaces of the functional units, baseband datademultiplexing will be unnecessary.
Reverse: Multiplexes reverse data from the RFS unit bythe ratio of 2:1, transmits it to baseband processing unit;deframes remote data, demultiplexes it at the ratio of 1:3
and then sends it to baseband processing unit. Supports three baseband fiber remote interfaces.
Supports CPRI interface.
RF Control Unit
This unit mainly performs management functions of local RFSunit, which includes:
Local RFS centralized control, including a TRX module, aPA module and a RFE module.
Forward and reverse baseband data processing.
Processing and distributing system clock and RF clock.
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Note:CBM module is used in CBTS I2 with CBM configuration tominimize the cost on customer demand. The CBM modulereplaces all the BDS boards and performs the equal functionsbecause BDS boards are integrated on CBM as subunits.
Figure 36 shows the CBM panel indicators.
F I G URE 36 CBM P ANEL I NDI CAT O RS
CBM FrontPanel
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Table 9 describes the functions of the CBM module panelindicators.
T ABL E 9 CBM PANEL INDI CAT O R F UNCT I O N DESCRI PT I O N
Indicator
ColorIndicatorMode
Description
Solid ON The program is beginning to runand begins to get logical address
Solid Off The boot procedure begins to loadthe version program in the flash.If the indicator flashes 3 times andthen turns off, it means there isno version program in the unit.For being OFF, there are tworeasons: no power supply or unit
not functioning properly.Flashing veryFast:
(ON for 334ms, then turnsOFF for 334ms, andcontinues insamemanner).
Board is in booting process.
Flashing Slow:
(ON for 1.5 s,then turnsOFF for 1.5 s,and continuesin samemanner).
The basic process is turning ON.
NormalFlashing:
(ON for 0.3 s,then turnsOFF for 0.3 s,
and continuesin samemanner).
Board is working normally.
RUN Green
Flashing Fast:
(ON for 70ms, then turnsOFF for 70ms, andcontinues insamemanner).
HDLC connection between RMMBoard and BDS disconnected.
PanelIndicators
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Indicator
ColorIndicatorMode
Description
Solid ON Level 1 failure:
RMM board clock or fiber linkalarm
Solid OFF Working normally
Flashing Slow0.5Hz
Level 2 failure
NormalFlashing: 2Hz
Level 3 failure
ALM(Alert
Indicator)
Red
Flashing: 8Hz
(ON for 70ms, then turnsOFF for 70ms, andcontinues insamemanner).
Board not in properly inserted inbackplane
Solid ON Fiber link is lockedFLS(FiberLinkState)
Green
Solid OFF Fiber link is not locked
Solid ON NormalBLS(Baseband LinkState) -indicate
s linkstate ofbaseband(reverse)transferred byTRXunit
Green
Solid OFF Abnormal
Solid ON NormalTYPE Green
Solid OFF Abnormal
Solid on:
Normalantennafeeder
ANT Green GPS antennafeeder statusindicator
Solid off:
Abnormalinitialization ofantennafeeder andsatellite
Solid on
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Indicator
ColorIndicatorMode
Description
Flashing Slow:
Break inantennafeeder
Flashing veryFast:
Normalantennawithoutsatellite signalreception
Flashing verySlow:
(ON for 2.5 s,then turn OFFfor 2.5second, andcontinues in asimilarmanner):
Antenna shortcircuit
Solid off:
Abnormalsystem clock
Normally on:means systemclock isnormal
Normally off:means that16Chip or 30MPhase-LockedLoop lose lock
Extremelyslow flashing:PP2S outputabnormality
Fast flashing:16Chip outputabnormality
CS Green Circuit clockindication
Extremely fastflashing: 30Moutputabnormality
Solid on
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Indicator
ColorIndicatorMode
Description
FE Green Linkconnection
statusindication forABIS port IPAccess toEthernet
ON means
link data
indication
OFF means
abnormalityor net cable isnot plugged in
Solid on
RSTC Green SMB joint Outputtingreferenceclock signalsof 10MHz
Solid on
1stsecond(on off
off offoff offoff offoff off)
Flashing: DT0Normal,
Notflashing: DT0 isnotnormal
2ndsecond(off offoff offoff offoff offoff off)
Interval
3rd
(onoff onoff offoff offoff offoff)
Flashing: DT1Normal,Notflashing: DT1 isnotnormal
4th(offoff offoff offoff offoff off
off)
Interval
E0S Green (E1 LINKGROUP0STATE)
Team 0 E1LinkL0L3
operationalstatusindication
FlashingNormal:0.125HZ,
50%
8S per periodis normal
5th(offoff onoff onoff offoff offoff)
Flashing: DT2Normal,Notflashing: DT2 isnotnormal
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Indicator
ColorIndicatorMode
Description
6thsecond
(off offoff offoff offoff offoff off)
Interval
5th(offoff onoff onoff onoff offoff)
Flashing: DT3Normal,Notflashing: DT3 isnotnormal
8thsecond(off offoff offoff offoff offoff off)
Interval
1stsecond(on offoff offoff off
off offoff off)
Flashing: DT4Normal, Notflashing
: DT4is notnormal
2ndsecond(off offoff offoff offoff offoff off)
Interval
3rd (onoff onoff offoff offoff offoff)
Flashing: DT5Normal, Notflashing: DT5is notnormal
E1S Green (E1 LINKGROUP1STATE)Operationalstatus
indication of1st E1 Link(L4-L7)
FlashingNormal:0.125HZ,50%
8S per period
is normal
4th (offoff offoff offoff offoff offoff)
Interval
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Indicator
ColorIndicatorMode
Description
5th (offoff on
off onoff offoff offoff)
Flashing: DT6
Normal, Notflashing: DT6is notnormal
6thsecond(off offoff offoff offoff offoff off)
Interval
5th (offoff onoff onoff onoff offoff)
Flashing: DT7Normal, Notflashing: DT7is notnormal
8thsecond(off offoff off
off offoff offoff off)
Interval
Table 10 illustrates the CBM panel buttons.
T ABL E 10 CBM BO ARD P ANEL B UT T O NS
Button Name Status Meaning
RST CBM Reset (GPSmodule not included)
The button resets all boardmodules except GPS module.
RSTC GPS Module Reset The button resets only GPSmodule.
CBM PanelButtons
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Table 11 describes the connection points of front panel externalinterfaces.
T ABL E 11 FRO NT PANEL INT ERF ACE DESCRI PT I O N
Interface Name Description
ANT Use ANT interface to connect with the GPSantenna.
10M Use 10 M interface to test the 10 MHz clockoutput.
PP2S Use PP2S interface to test the PP2S clockoutput.
MON Use MON DB9 bus to send control signal toGCM board.
Table 12 describes the fiber interfaces on front panel.
T ABL E 12 F I BER I NT ERF ACE
Interface Name Meaning
R0/T0 1st route fiber interface transceiver
R1/T1 2nd route fiber interface transceiver
R2/T2 3rd route fiber interface transceiver
Caution: The -48 V power supply input voltage exceeds safety
limits for human contact. Ensure adequate safety measures.Keep safe distance from power supply parts to avoid any electricshock risk.
Front PanelExternal
Interfaces
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CCMCCM board performs signaling processing, resource management,
and operation & maintenance of the CBTS. It is responsible forrouting the media and signaling within the CBTS. CCM boardworks in 1 + 1 active/standby mode.
524H
Table 13 illustrates the CCM types.
T ABL E 13 CCM TY PE S
Name FunctionInstallation
Location
CCM6 CCM6 board supports up to 12 D0
carrier sector configuration, or
24 1X carrier sectorconfiguration.
CCM6 board supports singlecabinet configuration.
CCM6 board supports RRFS.
CCM6 only connects extendedRFS subsystem.
Main cabinet
CCM0 Use CCM0 board only when
extended cabinet contains BDSsubsystem.
CCM0 board supports singlecabinet configuration.
Use CCM0 always in conjunctionwith the CCM6 board.
Secondary cabinet
Description
Types
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The basic working block diagram and functions of all CCM typesare the same.
525HFigure 37 shows the CCM board block diagram.
F I G URE 37 CCM BO ARD BL O CK D I AG RAM
Following are the functions of different units of CCM board:
CPU
CPU handles signals in the board.
Media stream IP communication unit
Media stream unit enables communication among multiple
BDS subsystem boards, and routes voice and packet servicesbetween BDS and BSC.
TOD reception and broadcast
CCM board communicates and controls the GCM board, andreceives TOD messages through UART interface.
Control stream IP communication unit
Control stream unit implements IP signaling betweenmultiple CBTS system board, and between CBTS and the BSC.
RFS communication Signaling unit
RFS signaling unit connects RIM board through HDLC channelwith CCM board.
RIM board Communication unit
Through RIM board unit, the CCM board communicates withRIM board and performs configuration, operation,maintenance and management of the RIM board.
Direct status monitoring and control unit
Through direct status monitoring and control unit, CCM boardimplements direct status monitoring and control of all BDSsubsystem boards. The monitoring and control parametersincludes in-position indication, running indication, errorindication, hard reset, power off, and download control.
Working BlockDiagram
Functions
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Figure 37 illustrates the panel of CCM.
F I G URE 38 CCM B O ARD PANEL
Note:ALL CCM types front panel is marked as CCM
Panel andIndicators
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527H
Table 14 describes the CCM board panel indicators.
T ABL E 14 CCM BO ARD P ANEL I NDI CAT O RS
IndicatorName Color Meaning Description NormalStatus
RUN Green RUN indicator Solid on: Indicatesversion reading andobtaining networkaddress.
Solid off: Indicatespower-off or non-functional CPU
Flashing extremelyslow (0.2 Hz, 50%):Indicates BOOTrequest of version
download
Slow Flashing (1/3Hz, 50%): Indicatesbasic power-onprocess
Normal flashing (5/3Hz, 50%): Indicatescompleted Power-onand normal workingstatus
Fast flashing (50/7Hz, 50%): Indicates
externaldisconnection.
Normalflashing
(5/3Hz,50%)
ALM Red Alarmindicator
Solid on: Indicatesboard alarm
Solid off: Indicatesnormal boardoperation
Solidoff
M/S Green Active/standby stateindicator
Solid on: Indicatesactive board status
Solid off: Indicatesstandby board status
Solid onor off
HES Green Shared HUBEthernetrunningindicator
Solid on: Indicatesshared HUB Ethernetoperations
Solid off: Indicatesnormal shared HUBEthernet operations
Solid on
SES Green SwitchedEthernetindicator
Solid on: Indicatesnormal switchedEthernet operations
Solid off: Indicatesabnormal switchedEthernet operations
Solid on
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528H
Table 15 illustrates the CCM panel buttons.
T ABL E 15 CCM BO ARD P ANEL B UT T O NS
Name Description MeaningM/S Active/standby
switchoverbutton
Pressing the M/S button on the activeboard changes its mode from active tostandby if the standby board is normal.Improper standby board insertion or faultyboard leads to non-functional button.
M/S button on standby board does notperform any function.
RST Reset button Pressing the RST button resets the boardconfiguration.
CCM board complies with the following standards:
Ethernet complies with IEEE 802.3 standard
MLVDS interface complies with TIA/EIA-899
EMC
Electrostatic protection: -6 ~ +6 KV (contact), 10 ~ +10KV (no contact)
Caution:
Radiators are CCM board component. Long working hours ofCCM board results in heating up of radiators. Avoid touching
radiators or power supply parts.
The -48 V power supply input voltage exceeds safety limitsfor human contact. Ensure adequate safety measures. Keepsafe distance from power supply parts to avoid any electricshock risk.
TechnicalIndices
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DSMDSM board performs relay, data transfer and Abis interface
signal processing.DSM board supports following E1/T1 configuration:
1. 4 E1/T1 (One CIB0 sub unit is installed on the DSM board).
2. 8 E1/T1 (One CIB1 sub unit is installed on the DSM board).
3. 12 E1/T1 (One CIB0 and one CIB1 sub units are installed onthe DSM board).
4. 16 E1/T1 (two CIB0 sub units are installed on the DSMboard).
Use these configurations either to connect upstream BSC ordownstream BTS. In addition, DSM board connects othertransmission network, such as SDH optical transmissionnetworks through the HW interface.
529HFigure 39 shows the DSM board block diagram.
F I G URE 39 DSM BO ARD B L O CK D I AG RAM
Description
Working BlockDiagram
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Different DSM board units perform the following functions:
CPU
CPU uses a firmware to control the board components.
Abis interface protocol processing unit
FPGA constitutes the Abis interface protocol-processing unit.
IP communication interface unit
DSM board has three IP communication ports.
Control stream port connects DSM board with CCM boardcontrol stream.
Media stream port connects DSM board with CCM boardmedia stream.
Third communication port connects DSM board with BSC.
Standard/extended E1/T1 interface unit
Standard/extended E1/T1 interface unit supports E1 (75ohm), E1 (120 ohm), and long and short hauls T1.
HW interface unit
HW interface unit is used only when DSM board is directlyconnects SNM board. HW interface unit supports Highwaydata. When the HW interface is used, E1 transmission in thesame direction is unnecessary.
Orderwire interface unit
Orderwire interface unit provides interfaces for analogtelephone orderwire processing.
Switching unit
Switching unit provides functions as time slotted data cross-connection, order wire routing, and switching.
Functions
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530H
Figure 40 shows the DSM board panel.
F I G URE 40 DSM BO ARD PANEL
Panel andIndicators
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531HTable 16 illustrates the DSM board panel indicators.
T ABL E 16 DSM BO ARD P ANEL I NDI CAT O RS
IndicatorName
Color Meaning Description NormalStatus
RUN Green RUNindicator
Solid off: Power offor non-functionalCPU
Solid on: Power on
Flashing fast (20Hz): Version readingFlashing slowly (2Hz): Normaloperations
Flashingslowly
ALM Red Alarm
indicator
Solid on: Board
alarm indicatorSolid off: Normalboard operations
Solid off
M/S Green - - Solid on
E0S Green Group 0E1Indicator
RUN indicator(green) of uplinkDTs 0 ~ 3:
It takes eightseconds to completerunning statusindication of all four
DTs at once at aflashing frequencyof 0.125 Hz.
Normal DT0: flashesonce at the start ofthe 1st second, andstays off until theend of the 2ndsecond.
Normal DT1: Flashestwice at the start ofthe 3rd second andstays off until the
end of the 4
th
second.
Normal DT2: Flashesthree times at thestart of the 5thsecond, and staysoff until the end ofthe 6thsecond.
Normal DT3: Flashesfour times at thestart of the 7thsecond and stays offuntil the end of the
8
th
second,
FlashingDTs 0 ~ 3
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IndicatorName
Color Meaning DescriptionNormalStatus
indicating normalDT3.
If all DTs stay off, allfour E1 links areabnormal.
E1S Green Group 1E1indicator
RUN indicator(green) of the uplinkDTs 4 ~ 7:
It takes eightseconds to completerunning statusindication of all fourDTs at once at aflashing frequencyof 0.125 Hz.
Normal DT0: flashesonce at the start ofthe 1st second, andstays off until theend of the 2ndsecond.
Normal DT1: Flashestwice at the start ofthe 3rd second andstays off until theend of the 4thsecond.
Normal DT2: Flashesthree times at thestart of the 5thsecond, and staysoff until the end ofthe 6thsecond.
Normal DT3: Flashesfour times at thestart of the 7thsecond and stays offuntil the end of the8th second,indicating normalDT3.
If all DTs stay off, allfour E1 links areabnormal.
Flashing
DTs 4 ~ 7
E2S Green Group 2E1indicator
Downlink DTs 0 ~ 3RUN indicator(green):
It takes eightseconds to completethe running statusindication of all fourDTs at once at aflashing frequency
of 0.125 Hz.
Flashing
DTs 0 ~ 3
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IndicatorName
Color Meaning DescriptionNormalStatus
Normal DT0: flashesonce at the start of
the 1st
second, andstays off until theend of the 2ndsecond.
Normal DT1: Flashestwice at the start ofthe 3rd second andstays off until theend of the 4thsecond.
Normal DT2: Flashesthree times at thestart of the 5th
second, and staysoff until the end ofthe 6thsecond.
Normal DT3: Flashesfour times at thestart of the 7thsecond and stays offuntil the end of the8th second,indicating normalDT3.
If all DTs stay off, allfour E1 links are
abnormal.
E3S Green Group 3E1indicator
RUN indicator(green) of thedownlink DTs 4 ~ 7:
It takes eightseconds for it tocomplete runningstatus indication ofall four DTs at onceat a flashingfrequency of 0.125Hz.
Normal DT0: flashesonce at the start ofthe 1st second, andstays off until theend of the 2ndsecond.
Normal DT1: Flashestwice at the start ofthe 3rd second andstays off until theend of the 4thsecond.
Normal DT2: Flashesthree times at thestart of the 5th
Flashing
DTs 4 ~ 7
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IndicatorName
Color Meaning DescriptionNormalStatus
second, and staysoff until the end of
the 6th
second.Normal DT3: Flashesfour times at thestart of the 7thsecond and stays offuntil the end of the8th second,indicating normalDT3.
If all DTs stay off, allfour E1 links areabnormal.
HWS Green HW linkRUNstatusindication
Solid on: Normal
Solid off: Abnormalor no HW signal
Solid on
532HTable 17 illustrates the DSM board buttons.
T ABL E 17 DSM B O ARD PANEL BUT T O NS
Name Description Meaning
M/S Active/standbyswitchover button
M/S button on DSM board does notperform any function.
RST Reset button Pressing the RST button resets theboard configuration.
Caution: The -48 V power supply input voltage exceeds safetylimits for human contact. Ensure adequate safety measures.Keep safe distance from power supply parts to avoid any electricshock risk.
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SNMSNM board enables low speed Abis interface links overlaid on
155 M links to provide long-distance Abis data transmission. Itcommunicates with DSM through the HW interface for datatransfer. The SNM board also supports SONET. The SNM boardsupports two pairs of fiber interface.
533HFigure 41 shows the SNM board block diagram.
F I G URE 41 SNM BO ARD B L O CK D I AG RAM
Different SNM board units perform the following functions:
CPU
CPU performs power-on self-test, initialization, configuration,performance alarm detection, and reporting board status. Inaddition, it communicates with the NMS terminal to receiveNMS commands, and transfers and executes NM information.
Ethernet interface unit
Ethernet interface unit provides IP communication networkaccess, and transfers and executes NM information andcontrol streams.
Optical interface unit
Optical interface unit converts STM-1 electrical signals tooptical signals.
Clock data recovery (CDR) unit
CDR unit recovers line clock from the digital code stream,and regenerates the received data based on this clock.
Section overhead processing (SOH) unit
Description
Working BlockDiagram
Functions
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Receiving end
SOH processing unit searches received frame for framealignment byte to implement frame synchronization, andextracts the SOH after descrambling the frame.
Transmitting end
It inserts SOH into the transmitted data, and scramblestransmitted data into a frame.
Path overhead processing (POH) unit
Receiving end
POH unit processes AU-4 pointer, and separates pathoverhead from the payload.
Transmitting end
POH unit adjusts the AU-4 pointer by inserting the pathoverhead into the payload.
Pointer locking unit
Pointer locking unit maintains pseudo synchronizationrelationship of AU4 or AU3 Synchronous Payload Envelope(SPE) frame rate. In addition, it removes phase and ratedifference between AU3 and AU4 in both directions bylocking floating VC4 in the AU4 bus signals from pathoverhead chip.
Tributary unit
Tributary unit maps/de-maps 63 E1 tributaries to VC4 bus.
Framer unit
Framer unit assembles 2 Mbps signals into frames, andmultiplexes/demultiplexes 2 Mbps signals and 16 Mbpssignals.
Clock unit
Clock circuit locks the 8 KHz clock to 19.44 MHz. Clockindices meet requirements for transmitting stratum-3 clock.
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534HFigure 42 shows the SNM board panel.
F I G URE 42 SNM BO ARD P ANEL
Panel andIndicators
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535HTable 18 shows the SNM board indicators.
T ABL E 18 SNM B O ARD PANEL INDI CAT O RS
IndicatorName
Color Meaning Description NormalStatus
RUN Green RUNindicator
Solid off: Indicatespower off or non-functional CPU
Solid on: Power on
Flashing rapidly (20Hz): Version reading
Flashing slowly (2Hz): Normal running
Flashingslowly
ALM Red Alarmindicator
Solid on: Indicatesboard alarm
Solid off: Indicatesnormal boardoperations
Solid off
M/S Green - - Solid on
F0S Green Group 0optical linkindicator
Solid on: Normal
Solid off: Abnormal
Solid on oroff
F1S Green Group 1optical linkindicator
Solid on: Normal
Solid off: Abnormal
Solid on oroff
F2S Green Group 2optical linkindicator(standby)
Solid on: Normal
Solid off: Abnormal
Solid on oroff
F3S Green Group 3optical linkindicator(standby)
Solid on: Normal
Solid off: Abnormal
Solid on oroff
CCS Green Circuitclock RUNstatusindication
Solid on: Normalwhen HW input clocksignal is 8 KHz
Solid off: Abnormalstate
Solid on oroff
536HTable 19 illustrates the SNM board panel buttons.
T ABL E 19 SNM B O ARD P ANEL B UT T O NS
Name Description Meaning
M/S Active/standby Switchoverbutton
Do not perform any function.
RST Reset button Pressing the RST button resets
the board configuration.
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It complies with the following standards:
ITU-T G.704
ITU-T G.774.02
ITU-T G.784
ITU-T G.803
ITU-T G.805
ITU-T G.813
EMC
Electrostatic protection: -6 ~ +6 KV (contact), -10 ~+10KV (no contact)
Caution:
The -48 V power supply input voltage exceeds safety limits forhuman contact. Ensure adequate safety measures. Keep safedistance from power supply parts to avoid any electric shock risk.
CHMCHM board performs forward baseband modulation and reversebaseband demodulation, and implements key CDMA technologiessuch as diversity technology, RAKE reception, softer handover,and power control. Through the dual bus, CHM board connectswith CCM board, and baseband data bus connects CHM boardwith RIM board.
537H
Table 20 illustrates the CHM types.
T ABL E 20 CHM TY PE S
Name ConfigurationInstallation
Location
CHM0 Supports 6 1X carriersector configuration
Both Main andsecondary cabinet
CHM1 Supports 3 DO carriersector configuration Both Main andsecondary cabinet
CHM2 Supports 3 DO carriersector configuration
Both Main andsecondary cabinet
Note:CHM boards (use any combination of the three types) canbe installed in a single CBTS cabinet.
TechnicalIndices
Description
Types
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CHM0
CHM0 board is based upon ASIC chip (QUALCOMM CSM5000)and supports CDMA2000-1X Release A service.
CHM0 board provides the following basic functions:
Completely supports CDMA2000-1X RTT standard, andmodulates/demodulates baseband signals based on systemrequirements.
Provides CCM board communication interfaces, includingmedia stream interface and control stream interface.
Forward link
Converts voice frames distributed from the CCM board
through the Ethernet interface into a standard formatrequired by the baseband processing chip. After basebandprocessing such as convolution coding, element repetition,interleaving, WALSH orthogonal spread, long codescrambling, PN code complicated orthogonal expansion, andQPSK modulation inside the baseband processing chip,baseband signals are output to the RIM board based onsystem configuration of carrier and sector.
Reverse link
Receives antenna data distributed from the RIM board,
performs processing opposite to that of forward link, such asdemodulation, and converts them into voice frames. AfterCPU processing, CCM board receives them through theEthernet interface for switching.
At most, the CHM0 board supports 512 forward ChannelElement (CE) and 256 backward CE.
CHM0 board supports CDMA2000-1x baseband processing innearly six sectors.
It supports remote board software download, remote softreset control and remote power management.
Interchangeable with CHM1 and CHM2 boards.
Description
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538H
Figure 43 shows the CHM0 board block diagram.
F I G URE 43 CHM0 BO ARD B L O CK D I AG RAM
Different CHM0 board units perform the following functions:
CPU unit
CPU unit manages and coordinates with the entire network,and provides multiple external interface controllers.
FE unit
FE unit provides control and media stream interfacesbetween the CHM0 and CCM boards.
CSM ASIC unit
CSM ASIC unit modulates/demodulates voice and dataframes, and implements the CDMA2000-1X RTT physicallayer requirements.
Multiplexing/demultiplexing unit
Multiplexing/demultiplexing unit multiplexes the forwardbaseband signals into high-speed signals. It demultiplexesreverse high-speed signals into baseband data formats.
Control unit
Control unit decodes and controls board peripherals.
Clock unit
Receives and distributes GPS clock required by each boardcomponent.
Power and hot swap unit
Power and hot swap unit supplies required power to theCHM0 board components, provides over-current and over-voltage protection, and supports hot swap function for thepower supply board.
Working BlockDiagram
Functions
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539HFigure 44 shows the CHM0 board panel.
F I G URE 44 CHM0 BO ARD PANEL
Note: The panel of CHM0 is marked as CHM
Panel andIndicators
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540H
Table 21 illustrates the CHM0 board panel indicators.
T ABL E 21 CHM0 BO ARD P ANEL INDI CAT O RS
LEDName Color Meaning Description NormalState
RUN Green RUNindicator
Solid on: Indicatesversion running andobtaining networkaddress
Flashing three times persecond (3 Hz): Occursduring board power-on,or booting.(If RUNindicator does not flashthree times at power-on,usually it indicates board
debugging mode or faultyBOOT chip)
Flashing slowly (2/3 Hz):
Notifies the basic power-on process
Normal flashing (10/3Hz): Power-on completedand entering normalworking status.
Flashing slowly(100/7Hz): Interruptionin communication of
media stream and controlstream.
Flashing rapidly once(100/7 Hz), flashingslowly once (5/3 Hz):Control streamcommunicationinterrupted.
Flashing rapidly threetimes (100/7 Hz), flashesslowly three times (5/3Hz): Interruption inmedia stream
communication.Solid off: BOOT versionprogram is loading in theFLASH. (If indicator is notON indicates power-off ornon-functional CPU)
Normalflashing(10/3Hz):
ALM Red Alarmindicator
Solid on: Level 1 criticalalarm
Solid off: Runningnormally
Flashing slowly (2/3 Hz):
Level-2 fault
Solid off
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LEDName
Color Meaning DescriptionNormalState
Normal flashing (10/3Hz): Level-3 fault
Flashing slowly (8 Hz):Improper board plugging
SCS Green SystemclockRUNstatusindicator
Solid on: Normal systemclock
Solid off: Abnormalsystem clock
Solid on
BLS Green Basebandlinkstatusindicator
Solid on: Normalbaseband link
Solid off: Abnormalbaseband link
Solid on
TYPE Green Channelboardtypeindicator
1X-RTT (Off) Solid off
541HTable 22 illustrates the CHM0 board panel button.
T ABL E 22 CHM0 BO ARD P ANEL B UT T O N
Name Description Meaning
RST Reset button Pressing the RST button resets the boardconfiguration.
A single CHM0 processes up to 12 sectors of basebandsignals.
EMC
Electrostatic protection: -6 ~ +6 KV (contact), -10 ~ +10KV (no contact)
Service standard supported
CDMA2000-1X RTT standard
Caution:
The -48 V power supply input voltage exceeds safety limits forhuman contact. Ensure adequate safety measures. Keep safedistance from power supply parts to avoid any electric shock risk
Technical
Indices
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CHM1
CHM1 board is based upon ASIC chip (QUALCOMM CSM5500). Itsupports CDMA2000-1X EV-DO services, with forward rateranging from 38.4 Kbps to 2.4576 Mbps and reverse rateranging from 9.6 Kbps to 153.6 Kbps.
CHM1 board performs following basic functions:
CHM1 board has two external 100 MB Ethernet interfaces, formedia and control streams.
Provides CCM board communication interfaces includingmedia and control stream interfaces.
Forward link
Converts CCM board data frames through forward CPU into astandard format required by CSM5500. After basebandprocessing such as convolutional coding, element repetition,interleaving, WALSH orthogonal spread, long codescrambling, and PN code orthogonal expansion, basebandsignals are output to the RIM board based on carrier-sectorconfiguration.
Reverse link
Receives data distributed from the RIM board through thebaseband data interface. Reverse baseband processing partconverts them into voice frames. After reverse CPU systemprocessing, CCM board receives frames for switching throughthe Ethernet interface.
Supports the CHM0 mixed insertion.
At most, supports 192 forward CE and 96 backward CE.
CHM1 board supports CDMA2000-1x EV-DO basebandprocessing in nearly three sectors.
Description
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542HFigure 45 shows the CHM1 board block diagram.
F I G URE 45 CHM1 BO ARD B L O CK D I AG RAM
Different CHM1 board units perform the following functions:
Forward CPU
Forward CPU controls and processes forward, includingstorage and the debugging interface.
Reverse CPU
Reverse CPU performs operation and maintenance, boardcontrol, and dynamic logic download with CCM board.
Forward baseband processing unit
Forward baseband processing unit modulates forward data.
Reverse baseband processing unit
Reverse baseband processing unit demodulates reverse dataand performs turbo decoding.
Switching unit
Switching unit switches forward/reverse control and mediastreams, to CCM board control and media stream interfaces.
Multiplexing/demultiplexing unit
Multiplexing/demultiplexing unit multiplexes the forwardbaseband signals into high-speed signals. It demultiplexesreverse high-speed signals into baseband data formatssupported by the modulation/demodulation chip.
Clock receiving unit
Clock receiving unit receives and distributes GPS clock
required by each board component.
Working BlockDiagram
Functions
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Power and hot-swap unit
Power and hot-swap unit supplies required power to theboard components, provides over-current and over-voltageprotection, and supports power supply board hot swap
function.
Decoding and control unit
Decoding and control module decodes and controls boardperipherals.
543HFigure 46 shows the CHM1 board panel.
F I G URE 46 CHM1 BO ARD P ANEL
Note: The panel of CHM1 is marked as CHM
Panel andIndicators
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544H
Table 23 illustrates CHM1 board panel indicators.
T ABL E 23 CHM1 BO ARD P ANEL I NDI CAT O RS
LEDName Color Meaning Description Normal State
RUN Green RUNindicator
Solid on: Indicates versionrunning and obtainingnetwork address
Flashing three times persecond (3 Hz): Occursduring board power-on, orbooting.(If RUN indicatord