RRU3252(AC) Description
Issue
01
Date
2013-06-30
HUAWEI TECHNOLOGIES CO., LTD.
Copyright Huawei Technologies Co., Ltd. 2013. All rights reserved.
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RRU3252(AC) Description
Contents
Contents
1 Overview ................................................................................................................................... 3
1.1 Exterior ..................................................................................................................................................... 3
1.2 Ports on the RRU3252(AC) ....................................................................................................................... 4
2 Technical Specifications.......................................................................................................... 5
2.1 Frequency Band......................................................................................................................................... 5
2.2 Capacity .................................................................................................................................................... 5
2.3 Output Power ............................................................................................................................................ 5
2.4 Power Input ............................................................................................................................................... 6
2.5 Physical Specifications .............................................................................................................................. 6
2.6 Environmental Specifications..................................................................................................................... 6
3 Acronyms and Abbreviations ................................................................................................. 7
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ii
RRU3252(AC) Description
1 Overview
Overview
The RRU3252(AC) is a remote radio unit. One or more RRU3252(AC) modules constitute
the radio frequency (RF) part of a distributed E-UTRAN NodeB (eNodeB). The
RRU3252(AC) can be mounted onto a pole, stand, or concrete wall. It also can be installed
close to antennas to shorten the feeder length, reduce feeder loss, and improve system
coverage. Remote radio units (RRUs) modulate and demodulate baseband and RF signals,
process data, amplify power, and detect standing waves.
1.1 Exterior
Figure 1-1 shows the exterior of the RRU3252(AC).
Figure 1-1 RRU3252(AC)
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RRU3252(AC) Description
1 Overview
1.2 Ports on the RRU3252(AC)
Each RRU has a modular structure. Its external ports are located at the bottom of the module
or in the cabling cavity. Table 1-1 describes the ports on the RRU3252(AC).
Table 1-1 Ports on the RRU3252(AC)
Port
Connector
Quantity
Description
Common public
radio interface
(CPRI) port
DLC
Connects to the baseband unit (BBU)
or to another RRU for cascading of
RRUs.
The RRU3252(AC) supports
four-level cascading, and the
maximum distance between an
RRU3252(AC) module and the BBU
is 20 km.
The RRU3252(AC) supports CPRI
compression.
RF port
Type N female
connector
Connects to an antenna.
Remote Global
Positioning
System (RGPS)
port
DB15
Connects to an RGPS antenna.
Ground port
OT
Connects to the protection ground.
Power supply
socket
Round 3-pin
connector
Provides AC power input.
RET/EXT_ALM
DB9
Connects to the remote control units
(RCUs) of remote electrical tilt
(RET) antennas or to external alarm
devices.
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RRU3252(AC) Description
2 Technical Specifications
Technical Specifications
2.1 Frequency Band
Table 2-1 Frequency band supported by the RRU3252(AC)
Frequency Band
Frequency Range
Carrier Bandwidth
Band 40 (2.3 GHz)
2300 MHz to 2400 MHz
5 MHz, 10 MHz, or 20 MHz
NOTE
The instantaneous bandwidth (IBW) of the RRU3252(AC) is 80 MHz, and the occupied bandwidth
(OBW) of it is 40 MHz.
2.2 Capacity
When functioning as a 4T4R RRU, the RRU3252(AC) supports three carriers at most and two
carriers in eRAN6.0.
When the RRU3252(AC) functions as two 2T2R RRUs, each 2T2R RRU supports three
carriers at most and two carriers in eRAN6.0.
2.3 Output Power
The maximum transmit power of an RF channel of the RRU3252(AC) is 20 W, and the total
transmit power of the RRU3252(AC) is 80 W at most.
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RRU3252(AC) Description
2 Technical Specifications
2.4 Power Input
Table 2-2 Power input
Item
Specifications
Power input
voltage range: 100 V AC to -240 V AC)
2.5 Physical Specifications
Table 2-3 Physical specifications
Item
Specifications
Dimensions
(H x W x D)
480 mm x 270 mm x 140 mm (18.90 in. x 10.63 in. x 5.51 in.) (18
L without the cover)
Weight
19.5 kg (43.00 lb) (without the cover)
2.6 Environmental Specifications
Table 2-4 Environmental specifications
Item
Specifications
Operating temperature
40C to +50C (40F to +122F) (without wind or solar
radiation, natural heat dissipation)
Relative humidity
5% RH to 100% RH
Atmospheric pressure
70 kPa to 106 kPa
Operating
environment
The operating environment of the RRU3252(AC) must
comply with the following standards:
3GPP TS25.141 V3.0.0
ETSI EN 300019-1-4 V2.1.2 (2003-04) Class 4.1: "Non-weather
protected locations"
Anti-seismic
performance
NEBS GR63 zone4
Protection rating
IP65
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RRU3252(AC) Description
3 Acronyms and Abbreviations
Acronyms and Abbreviations
3
3GPP
3rd Generation Partnership Project
C
CPRI
common public radio interface
E
ETSI
European Telecommunications Standards Institute
E-UTRAN
evolved universal terrestrial radio access network
N
NEBS
Network Equipment Building System
R
RF
radio frequency
RGPS
Remote Global Positioning System
RRU
remote radio unit
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RRU3252(AC) Description
3 Acronyms and Abbreviations
B
BBU
baseband unit
D
DC
direct current
E
eNodeB
E-UTRAN NodeB
R
RET
remote electrical tilt
I
IBW
instantaneous bandwidth
O
OBW
occupied bandwidth
R
RCUs
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