RRU3251 Description: Huawei Technologies Co., LTD
RRU3251 Description: Huawei Technologies Co., LTD
RRU3251 Description: Huawei Technologies Co., LTD
Issue 01
Date 2013-06-30
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Notice
The purchased products, services and features are stipulated by the contract made between Huawei and
the customer. All or partial products, services and features described in this document may not be within
the purchased scope or the usage scope. Unless otherwise agreed by the contract, all statements,
information, and recommendations in this document are provided "AS IS" without warranties, guarantees
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The information in this document is subject to change without notice. Every effort has been made in the
preparation of this document to ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute a warranty of any kind, express or implied.
Contents
1 Overview ................................................................................................................................... 1
1.1 Exterior ..................................................................................................................................................... 1
1.2 Ports.......................................................................................................................................................... 2
2 Technical Specifications.......................................................................................................... 3
2.1 Frequency Band......................................................................................................................................... 3
2.2 Capacity .................................................................................................................................................... 3
2.3 Output Power ............................................................................................................................................ 3
2.4 Input Power ............................................................................................................................................... 4
2.5 Physical Specifications .............................................................................................................................. 4
2.6 Environmental Specifications..................................................................................................................... 4
1 Overview
The RRU3251 is a remote radio unit. One or more RRU3251 modules constitute the radio
frequency (RF) part of a distributed E-UTRAN NodeB (eNodeB). The RRU3251 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. RRU3251s
modulate and demodulate baseband and RF signals, process data, amplify power, and detect
standing waves. RRU is short for remote radio unit, and E-UTRAN is short for evolved
universal terrestrial radio access network.
1.1 Exterior
Figure 1-1 shows the exterior of an RRU3251.
1.2 Ports
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 RRU3251.
2 Technical Specifications
NOTE
The instantaneous bandwidth (IBW) of the RRU3251 is 60 MHz, and the occupied bandwidth (OBW)
of it is 60 MHz.
2.2 Capacity
The RRU3251 supports three carriers at most and two carriers in eRAN6.0.
Item Specifications
Input power –48 V DC (voltage range: –34 V DC to –60 V DC)
Item Specifications
Dimensions (height 400 mm x 220 mm x 140 mm (15.75 in. x 8.66 in. x 5.51 in.)
x width x depth) (12.32 L without the cover)
400 mm x 249 mm x 162 mm (15.75 in. x 9.80 in. x 6.38 in)
(16.15 L with the cover)
Weight ≤ 13.5 kg (29.76 lb) (without the cover)
≤ 14.5 kg (31.97 lb) (with the cover)
Item Specifications
Working –40°C to +45°C (–40°F to +113°F) (with solar radiation of 1120 W/m2)
temperature –40°C to +50°C (–40°F to +122°F) (without solar radiation)
Relative 5% RH to 100% RH
humidity
Atmospheric 70 kPa to 106 kPa
pressure
Operating The RRU3251 complies with the following standards:
environment 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 NEBS GR63 zone4
protection
Ingress IP65
Protection (IP)
rating
B
BBU baseband unit
C
CPRI common public radio interface
D
DC direct current
E
eNodeB E-UTRAN NodeB
E-UTRAN evolved universal terrestrial radio access network
R
RCU remote control unit
RET remote electrical tilt
RF radio frequency
RRU remote radio unit