LTE TDD
AAU5271 Description
Issue
01
Date
2017-06-15
HUAWEI TECHNOLOGIES CO., LTD.
Copyright © Huawei Technologies Co., Ltd. 2017. All rights reserved.
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Huawei Technologies Co., Ltd.
Address:
Huawei Industrial Base
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Shenzhen 518129
People's Republic of China
Website:
http://www.huawei.com
Email:
support@huawei.com
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AAU5271 Description
Contents
Contents
1 Overview......................................................................................................................................... 1
1.1 Exterior ......................................................................................................................................................................... 1
1.2 Ports .............................................................................................................................................................................. 2
2 Technical Specifications .............................................................................................................. 4
2.1 Frequency Band ............................................................................................................................................................ 4
2.2 Antenna Specifications ................................................................................................................................................. 5
2.3 Mechanical Downtilt Supporting Arm .......................................................................................................................... 6
2.4 Capacity ........................................................................................................................................................................ 6
2.5 CPRI Port Specifications .............................................................................................................................................. 6
2.6 Output Power ................................................................................................................................................................ 7
2.7 Static Sensitivity ........................................................................................................................................................... 7
2.8 Power Consumption...................................................................................................................................................... 7
2.9 Power Supply ................................................................................................................................................................ 8
2.10 Physical Specifications ............................................................................................................................................... 8
2.11 Environment................................................................................................................................................................ 8
3 A Acronyms and Abbreviations ............................................................................................... 10
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LTE TDD
AAU5271 Description
1 Overview
1
Overview
The AAU5271 is an active antenna system (AAS) product and is a new type of the RF module.
The AAS integrates functions of RRUs and antennas, saving site resources and supporting
3D-MIMO functions.
AAU5271 provides 64 RF channels and supports massive MIMO.
1.1 Exterior
1.2 Ports
1.1 Exterior
Figure 1-1 shows the AAU5271 exterior.
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AAU5271 Description
1 Overview
Figure 1-1 AAU5271 exterior
1.2 Ports
Figure 1-2 Ports
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AAU5271 Description
1 Overview
The following table describes the ports on an AAU.
Table 1-1 Ports on an AAU
No.
Silkscreen
Description
1
CPRI1
An optical port with a data rate of 100 Gbit/s or 40 Gbit/s. An
optical module must be inserted into the port for optical cable
installation.
2
CPRI0
An optical port with a data rate of 100 Gbit/s or 40 Gbit/s. An
optical module must be inserted into the port for optical cable
installation.
3
Input
-48 V DC power input port
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AAU5271 Description
2 Technical Specifications
2
Technical Specifications
2.1 Frequency Band
2.2 Antenna Specifications
2.3 Mechanical Downtilt Supporting Arm
2.4 Capacity
2.5 CPRI Port Specifications
2.6 Output Power
2.7 Static Sensitivity
2.8 Power Consumption
2.9 Power Supply
2.10 Physical Specifications
2.11 Environment
2.1 Frequency Band
Table 2-1 AAU5271 frequency band
Frequency Band
Frequency
Range(MHz)
Carrier
Bandwidth(MHz)
IBW(MHz
)
OBW(M
Hz)
Band 38 (2.6GHz)
2575 to 2615
10, 20
40
40
Band 41 (2.6GHz)
2575 to 2635
10, 20
60
60
Band 40 (2.3GHz)
2302 to 2400
10, 15, 20
98
98
NOTE
Only AAUs available in
eRAN TDD 13.0 and
later versions support 15
MHz bandwidth.
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AAU5271 Description
2 Technical Specifications
2.2 Antenna Specifications
Table 2-2 Antenna electrical specifications of the AAU5271 working on band 38 (2.6 GHz) and
band 41 (2.6 GHz)
Frequency Band
2469 MHz to 2690 MHz
Polarization Mode
+45° and –45°
Gain
Gain of the center downtilt: 16.3 dBi
NOTE
The gains of broadcast beams in scenarios
of macro coverage with the horizontal
beamwidth of 65° are specified here.
Gain of all downtilts: 16.1±0.7 dBi
Horizontal Beamwidth
Adjustment Range of Broadcast
Beams
15° to 90°
Vertical Beamwidth Adjustment
Range of Broadcast Beams
8° to 35°
Scan Range of the Horizontal
Azimuth of Traffic Beams
–60° to +60°
Scan Range of the Vertical
Downtilt of Traffic Beams
–20° to +20°
Port Impedance
50 ohms
Surge Protection
DC circuit grounding
Table 2-3 Antenna electrical specifications of the AAU5271 working on band 40 (2.3 GHz)
Frequency Band
2300 MHz to 2400 MHz
Polarization Mode
+45° and –45°
Gain
Gain of the center downtilt: 15.5 dBi
NOTE
The gains of broadcast beams in scenarios
of macro coverage with the horizontal
beamwidth of 65° are specified here.
Gain of all downtilts: 15.2±0.7 dBi
Horizontal Beamwidth
Adjustment Range of Broadcast
Beams
17° to 90°
Vertical Beamwidth Adjustment
Range of Broadcast Beams
8.5° to 35°
Scan Range of the Horizontal
Azimuth of Traffic Beams
–60° to +60°
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AAU5271 Description
2 Technical Specifications
Scan Range of the Vertical
Downtilt of Traffic Beams
–20° to +20°
Port Impedance
50 ohms
Surge Protection
DC circuit grounding
2.3 Mechanical Downtilt Supporting Arm
The adjustment range of the mechanical downtilt supporting arm is –20° to +20°.
2.4 Capacity
The AAU5271 supports a maximum of three carriers.
Frequency Band
Frequency
Range(MHz)
Capacity
Band 38 (2.6GHz)
2575 to 2615
The AAU5271 supports a maximum of
three carriers.
Band 41 (2.6GHz)
2575 to 2635
The AAU5271 supports a maximum of
three carriers.
Band 40 (2.3GHz)
2302 to 2400
The AAU5271 supports a maximum of
five carriers.
2.5 CPRI Port Specifications
Table 2-4 Specifications of CPRI ports on the AAU5271
Model
Numbe
r of
CPRI
Ports
CPRI Port
Rate (Gbit/s)
CPRI-base
d
Topology
Cascading
Capability
Maximum
Distance from
the BBU (km)
AAU5271
2
40G/100G
Trunk chain
The
AAU5271
cannot be
cascaded.
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AAU5271 Description
2 Technical Specifications
2.6 Output Power
Table 2-5 describes the AAU5271 output power.
Table 2-5 AAU5271 output power
Frequency Band
Maximum Total Transmit Power
Band 38 (2.6 GHz) 2575 to 2615
120 W
Band 41 (2.6 GHz) 2575 to 2635
120 W
Band 40 (2.3 GHz) 2302 to 2400
160 W
2.7 Static Sensitivity
Table 2-6 Static Sensitivity
Frequency Band
Static Sensitivity
Band 38 (2.6 GHz) 2575 to 2615
-103.5dBm@1RX
Band 41 (2.6 GHz) 2575 to 2635
-103dBm@1RX
Band 40 (2.3 GHz) 2302 to 2400
-103.5dBm@1RX
As recommended in 3GPP TS 36.104, LTE receiver sensitivity is measured under a 5 MHz channel
bandwidth based on the FRC A1-3 in Annex A.1 standard, where the modulation scheme is QPSK (R =
1/3) and the system bandwidth is 25 resource blocks (RBs).
2.8 Power Consumption
Frequency Band
Typical Power Consumption
Band 38 (2.6 GHz) 2575 to 2615
890W
Band 41 (2.6 GHz) 2575 to 2635
820W
Band 40 (2.3 GHz) 2302 to 2400
890W
Typical power consumption is measured when the ambient temperature is 25 °C and the AAU5271 is
100% loaded. The actual typical power consumption has a 10% deviation from this value.
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AAU5271 Description
2 Technical Specifications
2.9 Power Supply
The AAU5271 requires -48 V DC power input and has an operating voltage range of -36 V
DC to -57 V DC.
2.10 Physical Specifications
Table 2-7 AAU5271 (Band 38, 2.6G, 2575 to 2615) hardware specifications
Item
Specifications
Dimensions (H x W x D)
860 mm x 520 mm x 170 mm
Weight
47 kg (without the mounting kits)
Table 2-8 AAU5271 (Band 41, 2.6G, 2575 to 2635) hardware specifications
Item
Specifications
Dimensions (H x W x D)
860 mm x 520 mm x 130 mm
Weight
37 kg (without the mounting kits)
Table 2-9 AAU5271 (Band 40, 2.3G, 2302 to 2400) hardware specifications
Item
Specifications
Dimensions (H x W x D)
860 mm x 520 mm x 170 mm
Weight
47 kg (without the mounting kits)
2.11 Environment
Table 2-10 lists the AAU5271 environmental specifications.
Table 2-10 AAU5271 environmental specifications
Item
Specifications
Operating
temperature
-40°C to +55°C(without solar radiation)
Wind load

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2600 MHz (Band 41):
−
Front: 660 N (Assume that the wind speed is 150 km/h.)
−
Side: 110 N (Assume that the wind speed is 150 km/h.)
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2 Technical Specifications
Item
Specifications
−

Rear: 660 N (Assume that the wind speed is 150 km/h.)
2600 MHz (Band 38) or 2300 MHz (Band 40):
−
Front: 660 N (Assume that the wind speed is 150 km/h.)
−
Side: 150 N (Assume that the wind speed is 150 km/h.)
−
Rear: 660 N (Assume that the wind speed is 150 km/h.)
Operational wind
speed
150 km/h
Survival wind
speed
200 km/h
Relative humidity
5% RH to 100% RH
Atmospheric
pressure
70 kPa to 106 kPa
Operating
environment
The operating environment of the AAU5271 must comply with the
following standards:
Anti-seismic
performance

3GPP TS36.141

ETSI EN 300019-1-4 V2.1.2 (2003-04) Class 4.1:
"Non-weatherprotected locations"
The anti-seismic performance of the AAU5271 must comply with the
following standard:
Interim Provisions for Test of Anti-seismic Performances of
Telecommunications Equipment
Ingress Protection
(IP) rating
IP65
Surge protection

IEC 62305-1 Protection against lightning - Part 1:General
principles

IEC 62305-3 Protection against lightning - Part 3:Physical damage
to structures and life hazard

IEC 62305-4 Protection against lightning - Part 4:Electrical and
electronic systems within structures

ITU-T K.35 Bonding configurations and earthing at remote
electronic sites

ITU-T K.56 Protection of radio base stations against lightning
discharges

ITU-T K.97 Lightning protection of distributed base stations

ETSI EN 300 253 Environmental Engineering(EE):Earthing and
bonding configuration inside telecommunications centers

YD 2324-2011 Lightning protection requirements and test
methods for Radio Base Stations (RBSs)

GB/T 50689-2011 Code for design of lightning protection and
earthing engineering for telecommunication bureaus (stations)
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AAU5271 Description
3 A Acronyms and Abbreviations
3
A Acronyms and Abbreviations
Acronyms and Abbreviations
A
AAS
active antenna system
AAU
active antenna unit
AU
antenna unit
B
BBU
baseband unit
C
CPRI
common public radio interface
L
LTE
Long Term Evolution
O
OBW
occupied bandwidth
R
RU
radio unit
3GPP
3rd Generation Partnership Project
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