commissioning bts and node b
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.
Commissioning BTS
and Node B (V200R012C00SPC401 )
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page1
PUERTO DE MANTENIMIENTO DEL NODO B
PUERTO DE MANTENIMIENTO DE LA BTS
COMMISSIONING NODE B
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.
COMMISSIONING NODE Bl Para el comisionamiento del nodo B es importante contar
con el software (LMT)
l Nos conectamos al nodo B a traves del puerto ETH de la
tarjeta WMPT.
l Tener en cuenta que la direccin IP del ETH por defecto
es: 17.21.2.15
l La IP de nuestra laptop: 17.21.2.10
Page2
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.
l Al entrar a la ventana de mantenimiento del nodo B se
procede con la actualizacion del software.
l Hacemos clic en:
l Maintenance>Software Management>Software update,
escogemos la opcion Update NodeB software y
hacemos clic en Next
Page3
COMMISSIONING NODE B
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page4
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.
l La persona que realiza el comisionamiento se le entregara
un documento Script, en el cual se encuentra los
parmetros de configuracin.
l PARA COMISIONAR UN SITE NO ES NECESARIO CONTAR
CON UN SCRIPT
Page5
COMMISSIONING NODE B
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page6
COMMISSIONING NODE B
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page7
COMMISSIONING NODE B
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page8
COMMISSIONING NODE B
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.
l Nota:
l La primera barra de estado viene a ser el estado de la creacin
del backup del nodo B. Esta podr direccionarla en cualquier
parte de su laptop.
l La segunda barra de estado especifica el estado de la carga del
archivo de configuracin.
l La tercera barra de estado especifica el estado de la carga del
software.
l Y por ultimo, la cuarta barra de estado especifica el estado de la
activacin del software.
Page9
COMMISSIONING NODE B
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page10
COMMISSIONING NODE B
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.
l Cuando uno acaba de hacer la actualizacion del software,
y de cargar la configuracion del site, deberia confirmar si
es que el nodoB cuenta con la version ya instalada.
V200R012C00SPC401
l Para llo utilizamos el comando LST VER
Page11
COMMISSIONING NODE B
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page12
COMMISSIONING NODE B
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.
l En ciertas ocasiones, el archivo de configuracin no ha
cargado del todo, para ello se proceder a cargar el archivo
de configuracin nuevamente. Se har de la siguiente
manera.
l Maintenance>Software Management>Data Config File
Transfer
l Escoger la opcin Download
l Recordar que cuando se carga un archivo de configuracin, el
nodo automticamente se reseteara. Para volver a entrar al
nodo tendremos que esperar unos 5 minutos
Page13
COMMISSIONING NODE B
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page14
COMMISSIONING NODE B
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.
l COMISIONAMIENTO DE LA TARJETA GTMU PARA
TECNOLGIA GSM
l Para este comisionamiento se utiliza otro software, en el
archivo donde se encuentra el software hay una carpeta
llamada BTSM
Page15
COMMISSIONING BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page16
COMMISSIONING NODE BPUERTO DE MANTENIMIENTO DE LA BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page17
COMMISSIONING BTS
BTS3000V100R012C00SPC039 \BTSM\ENGY buscamos el programa:Buscamos el programa btsm.exe
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.
l Para conectarme la tarjeta GTMU debe cambiar la IP de
su laptop a la siguiente.
l IPADDRESS: 192.168.0.70
l MASCARA: 255.255.255.0
l La IP del puerto ETH de la GTMU es:
l IPADDRESS: 192.168.0.72
l MASCARA: 255.255.255.0
Page18
COMMISSIONING BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.
l Hacemos doble clic al programa btsm.exe y aparecer lo siguiente.
Page19
COMMISSIONING BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.
l Antes de hacer cualquier configuracin debemos conseguir los derechos
para dicha configuracin.
l Para ello vamos en la parte izquierda damos clic a la opcin site0>Site
Management Right
l Aparece la siguiente ventana, y hacemos clic en el botn Get
Page20
COMMISSIONING BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.
l Despus de haber conseguido los derechos damos clic en la opcin Board
l Luego, aparecer dos opciones en la parte derecha, escogemos la opcin
Board Configuration
Page21
COMMISSIONING BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page22
COMMISSIONING BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page23
COMMISSIONING BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page24
COMMISSIONING BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page25
COMMISSIONING BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page26
COMMISSIONING BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page27
COMMISSIONING BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.
l Procederemos a descargar el software en la GTMU
Page28
COMMISSIONING BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.
l Muchas veces no aparece la opcin Forced Software Load y
Software Activation; para ello, apretamos el botn F5 y aparecer
una barra.
l Colocamos cf17 (17 significa que son las 5PM, si la hora fuera
06:37PM colocamos cf18)
Page29
COMMISSIONING BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page30
COMMISSIONING BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.
l Hacemos clic en la opcion Forced Software Activation
l Buscamos el archivo: gtmudown.pck
Page31
COMMISSIONING BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.
l Colocamos la Versin del
software: V100R012C00SP39
Page32
COMMISSIONING BTS
El software comenzara a descargarse.
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.
l Ahora procederemos a descargar el software de las RRUs
l Buscamos el archivo: mrrudown.pck
Page33
COMMISSIONING BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.
l Escogemos la opcion
MRRU_MAIN
Page34
COMMISSIONING BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.
l Ahora procederemos con la Activacin del software, tanto de la
GTMU y RRU
Page35
COMMISSIONING BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.
l Despues de descargar y activar el software, procedemos a verificar.
Page36
COMMISSIONING BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page37
COMMISSIONING BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.
l Para ver el Seria Number de las RRUs procedemos a buscar la opcin
Bar Code Query y damos click en start.
Page38
COMMISSIONING BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.
l Ahora nos conectamos nuevamente al Nodo B para poner este
comando SET LOADCTRL
l SET LOADCTRL: CTRLFLAG=YES, EFTIMMFLAG=NO,
SELFVERSION="V200R012C00SPC401",
PEERVERSION="BTS3000V100R012C00SPC039";
Page39
COMMISSIONING BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page40
COMMISSIONING BTS
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page41
DBS3900 System Overviewl DBS3900 components:
p BBU3900
p RRU3908, RRU3804, RRU3008
MBSC
Power cable
Power cableTrunk cable
CPRI cable
RRU3908
BBU3900
Grounding cable
Antenna
TMA
Feeder
RF jumper
Grounding cable
RF jumper
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page42
Contents1. DBS3900 system overview
2. BBU hardware structure
3. RRU hardware structure
4. Cable connection
5. Technical specifications of the DBS3900
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page43
Appearance of the BBU3900l The BBU3900 has a case structure. It can be installed in a
19-inch-wide and 2 U-high indoor space or outdoor
protective cabinet
l The dimensions of the BBU3900 are 442 mm (width) x 310
mm (depth) x 86 mm (height)
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page44
Logical Structure of the BBU3900l The BBU3900 consists of the transport subsystem,
baseband subsystem, control subsystem, and power
module
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Board Configuration of the BBU3900
l Slot numbering:
l Typical board configuration:
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page46
GTMU l The GSM Transmission, Timing, and Management Unit
for BBU (GTMU) controls and manages the entire BTS. It
provides interfaces related to the reference clock, power
monitoring, OM, and external alarm collection
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page47
GTMU (Cont.)Port
Connector
TypeDescription
CPRI0 to
CPRI5SFP
Ports for the communication between the BBU and the RF module;
support input and output of the optical and electrical signal.
ETH RJ45 Port for local maintenance and commissioning.
FE0 RJ45
Connects the BBU to a routing device in the equipment room through
the
Ethernet cable to transmit network information.
FE1 DLC
Connects the BBU to a routing device in the equipment room through
the
optical cable to transmit network information.
USB USB Enables the automatic software upgrade from a USB disk.
TST USB Provides a reference clock for the tester.
E1/T1DB26
female
Provides the input and output of the four E1/T1 signals between the
GTMU and the UELP or between the GTMU and the BSC.
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page48
WMPT l The WCDMA Main Processing and Transmission unit is
the BBU3900 main control and transmission board that
processes the signals and manages the resources for
other boards
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page49
WMPT (Cont.)
Port Connector Type Description
E1/T1 DB26 four E1/T1 signals.
FE0 RJ45 FE electrical port.
FE1 SFP FE optical port.
GPS SMA GPS antenna.
ETH RJ45 Commissioning Ethernet port.
USB USB USB loading port.
TST USB USB testing port.
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page50
WBBP
Board Cell UL CE DL CE
WBBPa 3 128 256
WBBPb1 3 64 64
WBBPb2 3 128 128
WBBPb3 6 256 256
WBBPb4 6 384 384
l The WCDMA Baseband Process Unit (WBBP) board
processes UL and DL baseband signals
l The WBBP is classified into WBBPa and WBBPb:
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page51
WBBP (Cont.)LED Color Status Description
RUN Green
ON The board has power input, yet the board is faulty.
OFF The power supply or the board is faulty.
1s ON, 1s OFF The board is running properly.
0.125s ON, 0.125s OFF Software is being loaded to the board.
ACT GreenON The board is running properly.
OFF The WBBP is not in use.
ALM RedON The board has alarms.
OFF The board is running properly.
CPRI0 to CPRI2
Red/green
OFFThe optical module is not configured with CPRI ports or the module is powered off.
ON (green) The CPRI link is operational, and the RRU hardware is functional.
ON (red) The optical module is not in position or the CPRI link is faulty.
Blinking at 4 Hz (red, 0.125s ON, 0.125s OFF)
The hardware of the RRU connected to the CPRI link is faulty
and needs to be replaced.
Blinking at 0.5 Hz (red, 1s ON, 1s OFF)
The VSWR alarm, antenna alarm, or RRU external alarm occurs
on the RRU connected to the CPRI link.
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page52
UBFA
LED Color Status Description
STATE
Green
0.125s ON,
0.125s OFF
The module is not registered,
and no alarm is reported.
1s ON, 1s OFFThe module is running
properly.
Red
OFF No alarm is reported.
1s ON, 1s OFFThe module is reporting
alarms.
l The Universal BBU Fan type A (UBFA) is the fan unit, and
it controls the fan speed, detects the temperature of the
fan board, and dissipates the heat in the BBU
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page53
UPEUl The Universal Power and Environment Interface Unit
(UPEU) board provides power for other boards and
monitors external alarms
l The UPEU is classified into UPEUA and UPEUB:
p The UPEUA converts -48 V DC to +12 V DC
p The UPEUB converts +24 V DC to +12 V DC
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page54
UPEU (Cont.)Port
Connector Type
Quantity Description
PWR 3V3 1 +24 V/-48 V DC power input.
EXT-ALM1
RJ45 1 Transmitting four dry contact alarms.
EXT-ALM0
RJ45 1 Transmitting four dry contact alarms.
MON1 RJ45 1Transmitting one RS485 environment monitoring signal.
MON0 RJ45 1Transmitting one RS485 environment monitoring signal.
LED Color Status Description
RUN GreenON The UPEU is operational.
OFF Power input is unavailable or the board is faulty.
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page55
Optional Boardsl UEIU:
p The Universal Environment Interface Unit (UEIU) board transmits monitoring signals
and alarm signals from external devices to the main control and transmission unit
l USCU:
p The Universal Satellite Card and Clock Unit (USCU) is compatible with six types of
satellite card, provides absolute timing information and the 1 Pulse Per Second (PPS)
reference clock for the main control board, and provides the RGPS ports and BITS port
l UTRP:
p The Universal Transmission Processing unit (UTRP) board, as the transmission
extension board, it provides eight E1s/T1s, or one unchannelized STM-1/OC-3 port, or
four FE/GE electrical ports, or two FE/GE optical ports
l UBRI:
p The Universal Baseband Radio Interface Board (UBRI) provides extended CPRI optical
or electrical ports to implement convergence, distribution, and multi-mode
transmission on the CPRI
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page56
Optional Boardsl UEIU:
p The Universal Environment Interface Unit (UEIU) board transmits monitoring signals
and alarm signals from external devices to the main control and transmission unit
l USCU:
p The Universal Satellite Card and Clock Unit (USCU) is compatible with six types of
satellite card, provides absolute timing information and the 1 Pulse Per Second (PPS)
reference clock for the main control board, and provides the RGPS ports and BITS port
l UTRP:
p The Universal Transmission Processing unit (UTRP) board, as the transmission
extension board, it provides eight E1s/T1s, or one unchannelized STM-1/OC-3 port, or
four FE/GE electrical ports, or two FE/GE optical ports
l UBRI:
p The Universal Baseband Radio Interface Board (UBRI) provides extended CPRI optical
or electrical ports to implement convergence, distribution, and multi-mode
transmission on the CPRI
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page57
Contents1. DBS3900 system overview
2. BBU hardware structure
3. RRU hardware structure
4. Cable connection
5. Technical specifications of the DBS3900
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page58
Contents3. RRU hardware structure
3.1 RRU3908 hardware structure
3.2 RRU3804 hardware structure
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Appearance of the RRU3908l The RRU3908 is an outdoor remote radio unit that
processes the baseband signals and the RF signals of the
GSM, and processes the RF signals of the UMTS
-48 V DC RRU +220V AC RRU
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Logical Structure of the RRU3908
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Panels of the DC RRU modulel The RRU module has a bottom panel, a cabling cavity
panel, and an area attached with LEDs
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Panels of the DC RRU modulel The RRU module has a bottom panel, a cabling cavity
panel, and an area attached with LEDs
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page63
Panels of the AC RRU modulel The RRU module has a bottom panel, a cabling cavity
panel, and an area attached with LEDs
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page64
Panels of the AC RRU modulel The RRU module has a bottom panel, a cabling cavity
panel, and an area attached with LEDs
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page65
Contents3. RRU hardware structure
3.1 RRU3908 hardware structure
3.2 RRU3804 hardware structure
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Appearance of the RRU3804l The RRU3804 is an outdoor remote radio unit that
processes the RF signals of the UMTS
-48 V DC RRU
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Logical Structure of the RRU3804
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Panels of the RRU3804l The RRU3804 has a bottom panel, a cabling cavity panel,
and an LED panel
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page69
Panels of the RRU3804l The RRU3804 has a bottom panel, a cabling cavity panel,
and an LED panel
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page70
Contents1. DBS3900 System Overview
2. BBU Hardware Structure
3. RRU Hardware Structure
4. Cable connection
5. Technical Specifications of the DBS3900
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page71
CPRI Interconnection Typel Scenario 1:
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CPRI Interconnection Type ( Cont.)l Scenario 2:
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Transmission Cable Connectionl E1 cable connection:
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Transmission Cable Connection (Cont.)
l FE/GE cable connection:
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page75
Contents1. DBS3900 System Overview
2. BBU Hardware Structure
3. RRU Hardware Structure
4. Cable connection
5. Technical Specifications of the DBS3900
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page76
Specification of EngineeringItem Specification
Dimensions
(height x width x depth)
BBU3900: 86 mm 442mm 310 mm
RRU3908: 485mm 380mm 170mm (with the housing)
RRU3908: 480mm 356mm 140mm (without the housing)
RRU3804: 485 mm x 285 mm x 170 mm (with the housing)
RRU3804: 480 mm x 270 mm x 140 mm (without the housing)
Weight
BBU3900: 12 kg (in full configuration)
BBU3900: 7 kg (in typical configuration)
RRU3908: 21 kg (without the housing)
RRU3908: 23 kg (with the housing)
RRU3804: 15 kg (without the housing)
RRU3804: 17 kg (with the housing)
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page77
Specification of CapacityItem Specification
BBU3900 (GSM) S24/24/24
BBU3900 (UMTS)
S8/8/8
1,536 CEs in the UL and 1,536 CEs + 15 24 HSDPA codes in the
DL
BBU3900 (GSM+UMTS)
GSM S24/24/24+UMTS S8/8/8
1,536 CEs in the UL and 1,536 CEs + 15 24 HSDPA codes in the
DL
RRU3908 (3GPP class2: GSM) 6TRX per RRU3908
RRU3908 (3GPP class2: GSM
+UMTS)G5U1 or G4U2
RRU3908 (3GPP class2: UMTS) 4 carriers per RRU3908
RRU3908 (ETSI: GSM) 6 TRX per RRU3908
RRU3908 (ETSI: GSM+UMTS) G3U2
RRU3804 4 carriers per RRU3804
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page78
Specification of Frequency BandRRU Frequency band RX band (MHz) TX band (MHz)
RRU3908
900 MHz890 to 915 935 to 960
880 to 905 925 to 950
850 MHz 824 to 849 869 to 894
1800 MHz1,710 to 1,755 1,805 to 1,850
1,740 to 1,785 1,835 to 1,880
1900 MHz1,850 to 1,890 1,930 to 1,970
1,870 to 1,910 1,950 to 1,990
RRU3804
Band I (2100 MHz) 1,920 to 1,980 2,110 to 2,170
Band II (1900 MHz) 1,850 to 1,910 1,930 to 1,990
Band IV (AWS) 1,710 to 1,755 2,110 to 2,155
Band V/VI (850 MHz) 824 to 849 869 to 894
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page79
Specification of Output Power
Number of
GSM Carriers
Number of
UMTS Carriers
Output Power per
GSM Carrier (W)
Output Power per
UMTS Carrier (W)
1/2/3/4/5/6 0/0/0/0/0/0 40/40/20/15/12/10 0/0/0/0/0/0
1/1/1 1/1/2 40/30/30 30/40/20
2/2/2 1/1/2 20/15/15 30/40/20
3 2 10 10
4/4 1/2 7.5 20/10
5 1 6 20
0/0/0/0 1/2/3/4 0/0/0/0 40/30/20/15
l The typical configuration of RRU3908 in compliance with the
specifications for multi-carrier base station (Class2) in 3GPP TS 45.005
V8.2.0
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page80
Specification of Output Power
Number of
GSM Carriers
Number of
UMTS Carriers
Output Power per
GSM Carrier (W)
Output Power per
UMTS Carrier (W)
1/2/3/4/5/6 0/0/0/0/0/0 40/40/20/15/12/10 0/0/0/0/0/0
1/1/1 1/1/2 40/30/30 30/40/20
2/2/2 1/1/2 20/15/15 30/40/20
3 2 10 10
4/4 1/2 7.5 20/10
5 1 6 20
0/0/0/0 1/2/3/4 0/0/0/0 40/30/20/15
l The typical configuration of RRU3908 in compliance with the
specifications for multi-carrier base station (Class2) in 3GPP TS 45.005
V8.2.0
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page81
Specification of Output Power (Cont.)
Number of
GSM Carriers
Number of
UMTS Carriers
Output Power per
GSM Carrier (W)
Output Power per
UMTS Carrier (W)
1/2/3/4/5/6 0/0/0/0/0/0 20/20/15/15/10/10 0/0/0/0/0/0
1/1 1/2 20/20 40/20
2/2 1/2 15/10 30/20
3/3 1/2 10/10 30/15
0/0/0/0 1/2/3/4 0/0/0/0 40/30/20/15
l The typical configuration of RRU3908 in compliance with
ETSI TS 100 910 V8.20.0
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page82
Specification of Output Power (Cont.)
l The RRU3804 supports 4 carriers, and the output power
at the antenna connector is 60 W
p One-carrier configuration: 60 W per carrier
p Two-carrier configuration: 30 W per carrier (in 1001
configuration: 20 W per carrier)
p Three-carrier configuration: 20 W per carrier
p Four-carrier configuration: 15 W per carrier
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Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page83
Glossary l 3GPP: 3rd Generation Partnership Project
l CE: Channel Elements
l CPRI: Common Public Radio Interface
l ETSI: European Telecommunications Standards Institute
l RET: Remote Electrical antenna Tilt
l TMA: Tower Mounted Amplifier
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