dbs3800 hardware system
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DBS3800 System
Hardware Structure
DBS3800V100R007
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DBS3800 is a distributed NodeB
solution put forward by Huawei
Technologies Co.Ltd.
In this slide, we’ll mainly introduce the
hardware system structure, application
scenarios, basic functions of modules
and networking and configuration of theDBS3800
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Upon completion of this course, you
will be able to:
Application Scenarios of DBS3800
Hardware Structure of DBS3800
Functions of Different Modules
Networking and Configuration
Examples
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References
DBS3800 System Description
DBS3800 Hardware Description
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Chapter1 General DescriptionChapter1 General Description
Chapter2 Hardware IntroductionChapter2 Hardware Introduction
Chapter3 Networking and ConfigurationChapter3 Networking and Configuration
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DBS3800 Deployment
Application scenario 1
Launch 3G services on the basis of a 2G site
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DBS3800 Deployment
Application scenario 3:
Launch a new 3G indoor site, there is an equipment room
but the space is limited and load-bearing capacity is week
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DBS3800 Deployment
Application scenario 4
Launching a new 3G outdoor site, the operator has no equipmentroom or fiber resources, or it is very hard to route optical fibers
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DBS3800 Product line
Remote radio unit Mini NodeBBaseband unit
BTS3801CBBU3806 RRU3801CBBU3806C
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DBS3800 Characteristics
supports circuit domain (CS) and packet (PS) domain services
supports positioning services
supports softer handover, soft handover and hard handover
Supports transmit diversity mode and receive diversity mode
Supports high-speed downlink packet access (HSDPA) technology
HSDPA allows the traffic at up to 14.4 Mbps for a single cell
HDSPA enables a single cell to support 15 OVSF codes
Supports RRU cascading
The maximum distance between two RRUs is 40km
The distance from the first one to the last one should be within 100kmWhen using the 1.25 G optical module, cascading levels is less than 4
When using the 2.5 G optical module, cascading levels is less than 8
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Chapter1 General DescriptionChapter1 General Description
Chapter2 Hardware IntroductionChapter2 Hardware Introduction
Chapter3 Networking and ConfigurationChapter3 Networking and Configuration
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Chapter2 Hardware IntroductionChapter2 Hardware Introduction
Section1 BBU HardwareSection1 BBU Hardware
Section2Section2 RRU HardwareRRU Hardware
Section3 BTS3801C HardwareSection3 BTS3801C Hardware
Section4 Antenna and Feeder SubsystemSection4 Antenna and Feeder Subsystem
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BBU Overview
BBU3806 appearance BBU3806Cappearance
60W
60W
100W
120W
128CE(UL)/256CE(DL)(V17)128CE(UL)/256CE(DL)(V17)CE Numbers
-48V DC+24V DC
3
-48V DC
3kg
42mm(H)436mm(W)300mm(D)
BBU3806
3Cells
220V ACPowerand Power
Consumption
15kgWeight
610mm(H)380mm(W)200mm(D) (with
the housing )
Dimension
BBU3806CIndex
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BBU System Structure
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BBU3806 Panel
8K/TT110MRST
EXT_ALM
ETH_RS232E1/T1/J1Ela Elb
RXTX
CPRI0
RXTX
CPRI1
RXTX
CPRI2
BITS GPS FE1
FE0 PWR/RS485ONOFF
TYPE LOCAT_ID E1/T1/J1
ONOFF
CPRI0 CPRI1 CPRI2 RUN ALM ACT
LIU7LIU6LIU5LIU4LIU3LIU2LIU1LIU0
ESD
BBU-RNC interface
BBU-BBU interface
BBU-RRU interface
BBU-RNC interface
Indicator
DIP switch
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BBU Transmission Interfaces
32.5Gbit/s1EIb
32.5Gbit/s1EIaInterface between
BBUs
1.25 Gbit/s
Or
2.5 Gbit/s
3
CPRI
(optical port or electrical
port)
Interface between
BBU and RRU
100 Mbit/s2Fast Ethernet
155 Mbit/s2STM-1
44.7 Mbit/s2T3
34.4 Mbit/s2E3
1.5 Mbit/s8T1
2 Mbit/s8E1
Iub Interface
RateQuantityTypes of interfaceUsage
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CPRICPRICPRICommon Public Radio InterfaceCommon Public Radio Interface
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BBU3806 Indicators
LOS alarmFlashing
The power of the signal received from the near end is not
enoughOn
The port works normally or is closedOff
green
CPRI0
CPRI2
Far end alarmFlashing
Near end alarmOn
The link isn’t used or there’s no alarmOff
greenLIU0
LIU7
The BBU doesn’t work or it is standby or secondaryOffThe BBU is activeOngreenACT
There’s alarmexclude VSWR warningOn
There’s no alarmexclude VSWR warningOffredALM
There is no power input or the BBU is faultyOff
Checkout status of the version or BBU is faultyOn
The BBU is loadingFlashing fast at 1Hz
The BBU is working normallyFlashing slowly at 0.5 Hz
greenRUN
MeaningStatusColorName
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BBU3806 DIP Switches
75ohm E1default valueONON
reservedOFFON
100ohm T1ONOFF
120ohm E1OFFOFF
MeaningDIP position8DIP position7
Tertiary BBU3806OFFONONSecondary BBU3806OFFONOFF
Standby BBU3806OFFOFFON
Active BBU3806default valueOFFOFFOFF
MeaningDIP position6DIP position5DIP position4
undefineddefault is OFFOFFOFFOFF
MeaningDIP position3DIP position2DIP position1
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BBU3806C Panel
RST
10 M
8K/TT1
LIU0
LIU1
LIU2
LIU3
LIU4
LIU5
LIU6
LIU7
RUN
ALM
ACT
CPRI2
CPRI1
CPRI0
ON
OF F
ETH_RS232
E 1 / T 1 & 7
5 / 1 2 0
L O C A T .I D
ON
OF F
1
2
3
4
PWRRS485&
EXT_ALM
2FE
8E1/T1
OPT
GPS
E1/T1 GND
C P R I 1 _T X
C P R I 1 _R X
C P R I 2 _T X
C P R I 2 _R X
C P R I 0 _T X
C P R I 0 _R X
Ela
Maintenance Panel Maintenance Panel Bottom Panel Bottom Panel Distributed Board Distributed Board
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Chapter2 Hardware IntroductionChapter2 Hardware Introduction
Section1 BBU HardwareSection1 BBU Hardware
Section2Section2 RRU HardwareRRU Hardware
Section3 BTS3801C HardwareSection3 BTS3801C Hardware
Section4 Antenna and Feeder SubsystemSection4 Antenna and Feeder Subsystem
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RRU Overview
Allowed voltage range-40V
DC-60V DC
Allowed voltage rangeAC150V
AC300V AC/47Hz63Hz
-48V DC
220V AC
Power
240W
210W
40WPower
amplifier
20WPower
amplifierPower
Consumption
12
20WPower amplifier:18KG
40WPower amplifier:20KG
20W565mm(H)390mm(W)165mm(D)
40W610mm(H)380mm(W)200mm(D)
RRU3801C
Sector Carrier
Weight
Dimensionwith
the housing
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RRU System Structure
O p t i c a l i n t e r f a c e
o r
e l e c t r i c a l i n t e r f a c e
H i g h s p e e d s
e r i a l i n t e r f a c e
m o d u l e
Feedback channel
Transmit signalprocessor
Receive signal
processor
MTRX
Rx1
Rx1
Rx2
A&F
subsystem
Tx1
Rx2LNA
LNA
PA
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RRU3801C Panel
EXT_ALM/ FAN
CPRI_E
CPRI_W
ALD
RUNALMTX_ACT/ VSWR
TST_RSLT
CPRI_E CPRI_W
ETH/RS232
RST
TST_ANT
TST_CPRI
OFFON
LOCAT
_ID
12
43
PWR
RX_IN/OUT
ANT_RXB
ANT_TX/RXA
DIP Switchused to indicate the slot Number of RRU3801C, not used yetDIP Switchused to indicate the slot Number of RRU3801C, not used yet
Maintenance Panel Maintenance Panel Bottom Panel Bottom Panel Distributed Board Distributed Board
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RRU3801C Indicators
Power amplifier is turned offand there’s VSWR
alarming before it is turned off
Red flashing slowly at
1Hz
Power amplifier is working there’s VSWR alarming onANT_TX/RXA port
Red is On
Power amplifier isn’t workingboard is runningGreen flashing slowly
at 0.5Hz
Power amplifier is workingthere’s no VSWR alarmGreen is On
Red and
Green
TX_A
CT/VS
WR
There’s alarmexclude VSWR warningOn
There’s no alarmexclude VSWR warningOff
RedALM
There is no power input or the BBU is faultyOff
Checkout status of the version or BBU is faultyOn
Software of the board is loadingFlashing fast at1Hz
The RRU is working normallyFlashing slowly at
0.5Hz
GreenRUN
MeaningStatusColorName
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RRU3801C IndicatorsMeaningStatusColorName
The signal transmitted from west port lossFlashing slowly at
0.5Hz
The power of the receiving signal on east port is too
weakOn
East port works normally or isn’t usedOff
GreenCPRI_E
The signal transmitted from west port lossFlashing slowly at
0.5Hz
The power of the receiving signal on west port is tooweak
On
West port works normally or isn’t usedOff
GreenCPRI_W
Un-tested statusOff
Being testedGreen flashes
slowly at 0.5Hz
Test result is abnormalRed is on
Test result is normalGreen is on
Red andGreen
TST_RSLT
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Chapter2 Hardware IntroductionChapter2 Hardware Introduction
Section1 BBU HardwareSection1 BBU Hardware
Section2Section2 RRU HardwareRRU Hardware
Section3 BTS3801C HardwareSection3 BTS3801C Hardware
Section4 Antenna and Feeder SubsystemSection4 Antenna and Feeder Subsystem
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BTS3801C Hardware Structure
340W
310W
220V AC
220V AC
40W Power
amplifier
20W Power
amplifier
Power and
Power Consumption
12
35kg
610mm(H)380mm(W)390mm(D)
BTS3801C
Sector Carrier
Weight
Dimension
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Chapter2 Hardware IntroductionChapter2 Hardware Introduction
Section1 BBU HardwareSection1 BBU Hardware
Section2Section2 RRU HardwareRRU Hardware
Section3 BTS3801C HardwareSection3 BTS3801C Hardware
Section4 Antenna and Feeder SubsystemSection4 Antenna and Feeder Subsystem
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Antenna and Feeder System
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Chapter1 General DescriptionChapter1 General Description
Chapter2 Hardware IntroductionChapter2 Hardware Introduction
Chapter3 Networking and ConfigurationChapter3 Networking and Configuration
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Networking BBUs and RNC can form multiple networking modes such as star, chain, tree,
ring, and hybrid
For both chain and tree networking modes:
cascading levels is less than 5
The BBUs in the ring topology require additional transmission equipment.
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Networking BBUs and RRUs can form multiple networking modes such as star, chain, tree,
ring, and hybrid
For both chain and tree networking modes:
When using the 1.25 G optical module, cascading levels is less than 4When using the 2.5 G optical module, cascading levels is less than 8
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Typical Configuration—11
Applied to wide areas and indoor circumstances Applied to wide areas and indoor circumstances
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Typical Configuration—21
Applied to long stretched areas Applied to long stretched areas
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Typical Configuration—31
Applied to cities or other high capacity areas Applied to cities or other high capacity areas
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www.huawei.com
Thank You
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