ZTE R8882L718 LTE Remote Radio Unit User Manual Users manual

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ZXSDR R8882 L200
LTE Remote Radio Frequency Unit
User Manual
Version: V2.00
ZTE CORPORATION
No. 55, Hi-tech Road South, ShenZhen, P.R.China
Postcode: 518057
Tel: +86-755-26771900
Fax: +86-755-26770801
URL: http://support.zte.com.cn
E-mail: support@zte.com.cn
LEGAL INFORMATION
Copyright © 2014 ZTE CORPORATION.
The contents of this document are protected by copyright laws and international treaties. Any reproduction or
distribution of this document or any portion of this document, in any form by any means, without the prior written
consent of ZTE CORPORATION is prohibited.
Additionally, the contents of this document are protected by
contractual confidentiality obligations.
All company, brand and product names are trade or service marks, or registered trade or service marks, of ZTE
CORPORATION or of their respective owners.
This document is provided “as is”, and all express, implied, or statutory warranties, representations or conditions
are disclaimed, including without limitation any implied warranty of merchantability, fitness for a particular purpose,
title or non-infringement. ZTE CORPORATION and its licensors shall not be liable for damages resulting from the
use of or reliance on the information contained herein.
ZTE CORPORATION or its licensors may have current or pending intellectual property rights or applications
covering the subject matter of this document. Except as expressly provided in any written license between ZTE
CORPORATION and its licensee, the user of this document shall not acquire any license to the subject matter
herein.
ZTE CORPORATION reserves the right to upgrade or make technical change to this product without further notice.
Users may visit the ZTE technical support website http://support.zte.com.cn to inquire for related information.
The ultimate right to interpret this product resides in ZTE CORPORATION.
Revision History
Revision No.
Revision Date
Revision Reason
R1.0
2011–01–19
First Edition
Serial Number: SJ-20110104194923-001
Publishing Date: 2011-01-19(R1.0)
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Contents
About This Manual ......................................................................................... I
Chapter 1 FCC Statement .......................................................................... 1-1
Chapter 2 Product Overview ..................................................................... 2-1
2.1 Distributed eNodeB Solution ............................................................................... 2-1
2.2 Product Position in Network ................................................................................ 2-3
2.3 Product Features................................................................................................ 2-4
2.4 Product Functions .............................................................................................. 2-4
2.5 Product Appearance........................................................................................... 2-4
2.6 Installation Scenario ........................................................................................... 2-5
2.7 Product Networking ............................................................................................ 2-5
2.8 Operation and Maintenance Introduction.............................................................. 2-6
2.9 Product External Interfaces ................................................................................. 2-7
2.10 Product Indicators ............................................................................................ 2-9
Chapter 3 Product Technical Specifications............................................ 3-1
3.1 Physical Indices ................................................................................................. 3-1
3.2 Working Environment ......................................................................................... 3-1
3.3 Bandwidth.......................................................................................................... 3-2
3.4 Power Requirements .......................................................................................... 3-2
3.5 Power Consumption ........................................................................................... 3-2
3.6 Transmission Index ............................................................................................ 3-2
3.7 Performance Indices........................................................................................... 3-2
3.8 Electromagnetic Compatibility ............................................................................. 3-3
3.9 Reliability ........................................................................................................... 3-5
Chapter 4 Product Installation .................................................................. 4-1
4.1 Safety Description .............................................................................................. 4-1
4.1.1 Safety Specifications Introduction .............................................................. 4-1
4.1.2 Safety Symbols ........................................................................................ 4-1
4.1.3 Safety Operation Guidance ....................................................................... 4-3
4.2 Device Unpacking and Inspection........................................................................ 4-5
4.2.1 Unpacking and Checking ZXSDR R8882 L200........................................... 4-5
4.2.2 Goods Handover ...................................................................................... 4-6
4.3 Device Installation .............................................................................................. 4-6
4.3.1 Mounting Device on Wall .......................................................................... 4-6
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4.3.2 Mounting Device on Pole ........................................................................ 4-10
4.3.3 Mounting Device on Gantry..................................................................... 4-19
4.4 Cables Connection ........................................................................................... 4-23
4.4.1 Connection of External Cables ................................................................ 4-23
4.4.2 External Cable Installation Flow .............................................................. 4-24
4.4.3 Connecting Power Cable ........................................................................ 4-25
4.4.4 Connecting Grounding Cable .................................................................. 4-28
4.4.5 Connecting Fiber Between eBBU and eRRU............................................ 4-30
4.4.6 Connecting Environment Monitor Cable ................................................... 4-32
4.4.7 Connecting AISG Control Cable .............................................................. 4-33
4.4.8 Connecting the RF Jumpers.................................................................... 4-34
Figures............................................................................................................. I
Tables ............................................................................................................ III
Glossary .........................................................................................................V
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About This Manual
Purpose
This manual gives introduction on the product description, technical indices, and product
installation.
Intended Audience
Hardware Installation Engineer
Operation and Maintenance Engineer
Prerequisite Skill and Knowledge
To use this document effectively, users should have a general understanding of wireless
telecommunications technology. Familiarity with LTE wireless network and its related
components is helpful.
What is in This Manual
Chapter
Summary
Chapter 1, FCC Statement
Introduces the FCC statements that this device complies
with
Chapter 2, Product Overview
Describes product characteristic, interfaces, indicators
Chapter 3, Product Technical Indices
Describes the technical indices of the product
Chapter 4, Product Installation
Describes installation and cable connection of the
product
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Chapter 1
FCC Statement
FCC & IC Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions:
This device may not cause harmful interference.
This device must accept any interference received, including interference that may
cause undesired operation.
Note:
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in
a commercial environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instruction manual,
may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in
which case the user will be required to correct the interference at his own expense.
Caution!
Changes or modifications to this unit not expressly approved by the party responsible for
compliance will void the user’s authority to operate the equipment. Any change to the
equipment will void FCC and IC grant.
FCC Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled
environment.This equipment should be installed and operated with minimum distance 6.24
m between the radiator & your body.
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Chapter 2
Product Overview
Table of Contents
Distributed eNodeB Solution.......................................................................................2-1
Product Position in Network........................................................................................2-3
Product Features........................................................................................................2-4
Product Functions ......................................................................................................2-4
Product Appearance...................................................................................................2-4
Installation Scenario ...................................................................................................2-5
Product Networking ....................................................................................................2-5
Operation and Maintenance Introduction ....................................................................2-6
Product External Interfaces ........................................................................................2-7
Product Indicators ......................................................................................................2-9
2.1 Distributed eNodeB Solution
To supply customers with more competitive communication equipment and solution in the
market, ZTE develops and promotes ZTE SDR eBBU (baseband unit) and eRRU (remote
radio unit) distributed eNodeB solution timely, which jointly perform LTE eNodeB service.
ZTE distributed eNodeB solution is shown in Figure 2-1.
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Figure 2-1 ZTE Distributed eNodeB Solution
ZTE's LTE eBBU+eRRU distributed eNodeB solution has the following predominance:
1. Saving labor cost and engineering cost for networking.
eBBU+eRRU distributed eNodeB equipment is small in size, light in weight, and easy
for transportation and engineering construction.
2. Fast networking, also saving the fees of renting equipment room.
eBBU+eRRU distributed eNodeB is applicable to various sites, such as mounted on
steel tower, on building top, or on wall, etc. It's more flexible in selecting installation
site, and not restricted by the space of equipment room. It can help operators to deploy
network rapidly. It can also save the fees of renting equipment room, and the network
operation cost.
3. Convenient in upgrade and capacity expansion; saving the initial stage cost of the
network.
eRRU can be mounted as close to antenna as possible, to save the cost of feed cable
and decrease the loss of feed cable. It also can enhance the output power of eRRU
and increase the coverage.
4. Low power consumption, power-saving.
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Compared with traditional eNodeB, eBBU+eRRU distributed eNodeB has lower power
consumption, which can greatly reduce the investment and cost on electric power, and
thus save the network operation cost.
5. Distributed networking, making good use of operators' network resources supporting
eBBU+eRRU distributed networking; supporting star networking mode between eBBU
and eRRU.
6. Adopting a more perspective and generalized eNodeB platform.
eBBU adopts the platform designed for the future B3G and 4G. One hardware platform
can realize different standard modes, and several standard modes can coexist in one
eNodeB. In this way, operators' management can be simplified, and several eNodeBs
to be invested can be integrated into one eNodeB (multimode eNodeB). The operators
can select the evolution direction of the future network more flexibly.
2.2 Product Position in Network
ZXSDR R8882 L200 is a remote radio unit (eRRU) of distributed eNodeB. The signal is
transmitted or received through ZXSDR R8882 L200 to and from base band processing
unit for further processing through CPRI interface. By applying the distributed system, the
feeder loss will be reduced when the remote radio unit is positioned close to the antenna.
The coverage is enlarged with this solution.
Figure 2-2 Product Location
Note:
ZXSDR R8882 L200 covers R8882 L188, R8882 L708, R8882 L808, R8882 L268 and
R8882 L718.
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2.3 Product Features
Multi-Mode eRRU
ZXSDR R8882 L200 is fully software defined device. It supports multi-mode at the same
frequency band simultaneously. Therefore, it fully satisfies operators’ requirements of
hybrid network deployment and long term evolution with the lowest cost.
MIMO Supported, Better Performance
R8882 L268 supports 2T4R (license needed), R8882 L188, R8882 L708, R8882 L808 and
R8882 L718 support 2T2R, which can optimize spectrum efficiency greatly and improve
network uplink performance. As a result, it brings better customer experience.
Higher Efficiency, Lower TCO
ZXSDR R8882 L200’s PA efficiency can reach up to 30% thanks to the most advanced
Doherty PA, DPD linear technology.
It supports dynamic adaptive PA power supply due to the output power, which reduces
power consumption.
2.4 Product Functions
ZXSDR R8882 L200 is the remote radio unit of distributed base station. The signal is
transmitted or received through ZXSDR R8882 L200 to/from base band processing unit
for further processing via standard CPRI interface.
The product basic functions are listed below:
Supports the configuration of 5 MHz, 10 MHz, 15 MHz and 20 MHz scalable
bandwidth.
Supports 2x2 MIMO on downlink.
Supports QPSK,16-QAM,64-QAM on downlink, QPSK and 16–QAM on uplink.
Supports transmission and receive power detection.
Supports overload power protection for power amplifier.
Supports power amplifier switching on/off function.
ZXSDR R8882 L200 software failure will not affect the running of eBBU and other
ZXSDR R8882 L200s which are connected to it.
Supports field strength scanning, temperature query, VSWR query, dry contact,
hardware/software resetting.
2.5 Product Appearance
The appearance of ZXSDR R8882 L200 is as shown in Figure 2-3.
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Chapter 2 Product Overview
Figure 2-3 Product Overall Appearance
2.6 Installation Scenario
The ZXSDR R8882 L200 usually installed on wall or on pole or on gantry.
2.7 Product Networking
ZXSDR R8882 L200 supports star networking mode with eBBU, as shown in Figure 2-4.
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Figure 2-4 Star Networking Mode
2.8 Operation and Maintenance Introduction
ZXSDR R8882 L200 supports system operation and maintenance remotely or locally.
Operate and Maintain System Remotely
Remotely operates and maintains system by using NetNumen management system, as
shown in Figure 2-5.
Figure 2-5 Operate and Maintain System Remotely
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Chapter 2 Product Overview
Operate and Maintain System Locally
locally operates and maintains system by using ZTE’s Local Maintenance Terminal (LMT)
software kit, as shown in Figure 2-6.
Figure 2-6 Operate and Maintain System Locally
2.9 Product External Interfaces
The ZXSDR R8882 L200 external interfaces are shown in Figure 2-7 and Figure 2-8.
Figure 2-7 Product External Interfaces and Grounding Terminal
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Figure 2-8 LMT Interface
Table 2-1 shows the detailed description of all the external interfaces.
Table 2-1 Product External Interfaces Description
No.
Label
Interface/Terminal
Interface type/connector
PWR
Power interface/1 dry contact
DC interface:
Connector XCG18T4K1P101+XC18FJJP1-10.5
Section area of cable is 1.5 mm2
MON
485 Serial /2 dry contacts
8-cores socket (IEC 60130-9-ED)
AISG
AISG device interface
8-cores aviation socket
OPT1
eBBU Interface
LC type optical interface
OPT2
Reserved
LC type optical interface
ANT4(TX1/RX1)
Antenna TX/RX interface on channel 1
50 Ohm DIN-7/16 Connector
ANT3(RX3)
Antenna RX interface on channel 3
50 Ohm DIN-7/16 Connector
Grounding Terminal
ANT2(RX2)
Antenna RX interface on channel 2
50 Ohm DIN-7/16 Connector
10
ANT1(TX0/RX0)
Antenna TX/RX interface on channel 0
50 Ohm DIN-7/16 Connector
11
LMT
Operation and Maintenance Interface
8P8C Ethernet interface
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Chapter 2 Product Overview
Note:
There are no ANT2 and ANT3 interfaces for L708 and L808.
2.10 Product Indicators
ZXSDR R8882 L200 provides six LED indicators, which are located at the right bottom
side of the device. The LED indicators are used to show product working status and alarm
status, as shown in Figure 2-9.
Figure 2-9 Product Indicators
Table 2-2 shows the detailed information of the indicators.
Table 2-2 Product Indicator Description
Name
Color
Meaning
Working Mode
RUN
Green
Running status
Blinking every 1.5 second: physical link in the
process of initialization
Blinking every 0.07 second: the link between
eBBU and eRRU is in the process of
establishment, or the link is broken
Blinking every 0.3 second: device is in good
state
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Name
Color
Meaning
Working Mode
ALM
Red
Alarm indicator
Solid ON: there is alarm
OFF: there is no alarm
Solid ON: physical link is good, logical link is
OPT1
Green
Optical interface
running indicator
abnormal
OFF: physical link is abnormal
Blinking every 0.3 second: interface is in good
state
OPT2
Green
Optical interface
running indicator
Solid ON: physical link is good, logical link is
abnormal
OFF: physical link is abnormal
Blinking every 0.3 second: interface is in good
state
VSWR1
Red
Transmission
Solid ON: there are VSWR alarms
channel 1 VSWR
OFF: there is no VSWR alarm
Transmission
Solid ON: there are VSWR alarms
channel 4 VSWR
OFF: there is no VSWR alarm
indicator
VSWR2
Red
indicator
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Chapter 3
Product Technical
Specifications
Table of Contents
Physical Indices .........................................................................................................3-1
Working Environment .................................................................................................3-1
Bandwidth ..................................................................................................................3-2
Power Requirements..................................................................................................3-2
Power Consumption ...................................................................................................3-2
Transmission Index ....................................................................................................3-2
Performance Indices ..................................................................................................3-2
Electromagnetic Compatibility ....................................................................................3-3
Reliability....................................................................................................................3-5
3.1 Physical Indices
Item
Index
Dimension
380 mm x 320 mm x 140 mm (HxWxD)
Weight
20 kg
3.2 Working Environment
Item
Working
Storage
Index
Temperature
-40℃~55℃
Relative Humidity
5%~100%
Temperature
-55℃~70℃
Relative Humidity
5%~98%
Ground
≤5 Ω, earth resistance can be less than 10 Ω in
thunder-less area where thunderstorm days is
less than 20 days per year
Waterproof/Dustproof
IP65
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3.3 Bandwidth
ZXSDR R8882 L200 supports 5 MHz, 10 MHz, 15 MHz and 20 MHz.
Note:
L708 does not support 20 MHz.
3.4 Power Requirements
The power supply of the ZXSDR R8882 L200 is -48 VDC (range: -37 VDC ~-57 VDC).
3.5 Power Consumption
The maximum power consumption of ZXSDR R8882 L200 is 330 W.
3.6 Transmission Index
ZXSDR R8882 L200 connects to eBBU through CPRI interfaces. The detailed information
of the CPRI interface is shown in Table 3-1.
Table 3-1 CPRI Interface Index
Item
CPRI interface
Quantity
Interface type
SFP (LC)
Speed
2x3.072 Gbps or
Standard
CPRI V4.1
2x2.4576 Gbps
3.7 Performance Indices
Operation Frequency Band
R8882 L188: 1730 MHz~1785 MHz(uplink)/1825 MHz~1880 MHz(downlink) or 1710
MHz~1765 MHz(uplink)/1805 MHz~1860 MHz(downlink)
R8882 L268: 2500 MHz~2570 MHz(uplink)/2620 MHz~2690 MHz(downlink)
R8882 L708: 698 MHz~716 MHz(uplink)/728 MHz~746 MHz(downlink)
R8882 L808: 832 MHz~862 MHz(uplink)/791 MHz~821 MHz(downlink)
R8882 L718: 777 MHz~798 MHz(uplink)/746 MHz~768 MHz(downlink)
Output Power
R8882 L188, R8882 L708, R8882 L808, R8882 L718: 2x40 W
R8882 L268: 2x30 W
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Chapter 3 Product Technical Specifications
Receiver Sensitivity
The receiver sensitivity of ZXSDR R8882 L200 is shown in Table 3-2.
Table 3-2 Receiver Sensitivity
Channel bandwidth (MHz)
5/10/15/20
Reference measurement
Reference sensitivity power
channel
level (dBm)
FRC A1-3
-104
Transmission
The maximum transmission distance is 10 kilometers.
Supports two kinds of optical fiber interface mode: 2x3.072 Gbps and 2x2.4576 Gbps.
3.8 Electromagnetic Compatibility
The decision rule used in this section is describes as follows:
1. Rule A
l A communication channel is set up for the test, and it is always available during
the test.
l FER of the forward channel and reverse channel are less than or equal to 1 during
the test.
l When the test task accomplished, equipment under test (EUT) works normally
under pre-scheduled method, there is no information loss of user control function
and the saved data, and the communication channel is still available.
l If the EUT is a transmitter only, test should be done under idle-mode, and there
is no unintentional radiation during the test.
2. Rule B
l A communication channel is set up for the test, and it is always available during
test.
l EUT works normally under pre-scheduled method, there is no information loss of
user control function and the saved data, and the communication channel is still
available.
l If the EUT is a transmitter only, test should be done under idle-mode, and there
is no unintentional radiation during the test.
3. Rule R
There is no device damage or interference (such as software malfunction or protection
device mis-operation) during the test. The EUT works normally under the defined
boundary after transient electromagnetic incident.
Electronic Static Discharge Immunity
Item
Contact discharge
Air discharge
Decision Rule
Basic testing
6 kV
8 kV
Rule B
Enhanced testing
8 kV
15 kV
Rule R
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RF Electromagnetic Field Radiation Immunity
Range
Feature
Field Strength
Decision Rule
80 MHz~800MHz
80%AM(1kHz)
10 V/m
Rule A
800 MHz~960 MHz
80%AM(1kHz)
10 V/m
Rule A
960 MHz~1400MHz
80%AM(1kHz)
10 V/m
Rule A
1400 MHz~2700 MHz
80%AM(1kHz)
10 V/m
Rule A
2700 MHz~6000 MHz
80%AM(1kHz)
10 V/m
Rule A
Electrical Fast Transient Burst Immunity
Item
Voltage
Repetition Frequency
Decision Rule
Basic test
±1 kV
5 kHz
Rule B
Enhanced test
±2 kV
5 kHz
Rule B
signal generator waveform 5/50ns
Lightning Tolerance
Signal Type
Nominal Required
Antenna feeder port
10 kA ± 5 times
The 10 KA protection is guaranteed by the duplex of
the RF module. An external lightning protection unit
is needed for the higher protection other than 10 KA
DC power port（external SPD）
20 kA ± 5 times, Residual Voltage is less than 250 V.
Shielded cable is used for the R8882 remote power
supply
Signal port—dry contact
3KA
Signal port—RS485 signal
3KA
AISG power
5KA
Signal port—AISG 485 port
3KA
Radiation Transmission
Frequency range (MHz)
Quasi-peak limit (dBuV/m)
（m）
）
Distance（
30~230
30
10
230~1000
37
10
1G~3G
50
10
3G~6G
54
10
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Power Conducted Transmission
Frequency range (MHz)
Sum limit(dBuV)
Quasi-peak
Average value
0.15~0.50
56~66
46~56
0.50~5
56
46
5~30
60
50
Signal Conducted Transmission
Frequency range
0.15 MHz~0.5 MHz
0.5 MHz~30 MHz
Sum limit
Quasi-peak
Average value
84 dBuV~74 dBuV (Voltage) or40
74 dBuV~64dBuV (Voltage) or 30
dBuV~30 dBuA (Current)
dBuV~20 dBuA (Current)
74 dBuV (Voltage) or 30dBuA
64dBuV (Voltage) or 20dBuA
(Current)
(Current)
RF Electromagnetic Field Conducted Immunity
Frequency range
Voltage
Feature
Decision Rule
0.15 MHz~80 MHz
10 V
80%AM（1kHz）
Rule A
Surge Immunity
Site
Indoor
Open circuit Voltage
Type
Wire—Wire
Wire—Ground
DC power
0.5
Long distance wire (wire length longer
than 10 meters)
Short distance wire (wire length less than
10 meters)
3.9 Reliability
Item
Characteristics
MTBF
≥34,0000 hours
MTTR
1 hour
Availability
≥99.999842%
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Chapter 4
Product Installation
Table of Contents
Safety Description ......................................................................................................4-1
Device Unpacking and Inspection...............................................................................4-5
Device Installation ......................................................................................................4-6
Cables Connection ...................................................................................................4-23
4.1 Safety Description
4.1.1 Safety Specifications Introduction
In order to avoid accidents, before installing or maintaining the ZXSDR R8882 L200, please
read this manual carefully for safety issues. If there are any local safety specifications, use
the safety specifications described in this manual as a supplement. If there is any conflict
between them, please follow the local safety specifications.
The personnel who install or maintain the ZXSDR R8882 L200 must be equipped
with knowledge of safety operation, technical training, correct knowledge of equipment
operation and maintenance, and corresponding qualifications.
When installing or maintaining the ZXSDR R8882 L200, the operator must follow the
precautions of the equipment and special instructions provided by ZTE CORPORATION.
Furthermore, the security issues listed in this manual are only friendly reminders by
ZTE CORPORATION from safety point of view. ZTE is not responsible for any accident
caused by violations of general safety operating requirements, or by violations of the
design, production and use of equipment safety standards.
4.1.2 Safety Symbols
Common safety symbols are shown in Table 4-1. These symbols are used to remind the
user with safety matters when they maintain the equipment.
Table 4-1 Symbol type and meanings
Symbols
Meanings
No Touch Sign: DO NOT touch
General Warning Sign: General security issues
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Symbols
Meanings
Electric Shock Warning Sign: Beware of high
voltage
Antistatic Sign: The device is sensitive to
electrostatic charge or static electricity
Microwave Warning Sign: Be careful of strong
electromagnetic fields
Laser Warning Sign: Be careful of intense laser
beam
Burn Warning Sign: Be careful of high
temperature
The general warning sign
falls into three safety severities: Danger, Warning and
Caution, from major to minor. The severity is marked on the right of the symbol and detailed
descriptions are placed under the symbol. Their formats and descriptions are shown as
below.
Danger!
Ignoring the safety warning may cause death or serious personal injuries, or equipment
damage or breakdown.
Warning!
Ignoring the safety warning may cause major serious injuries, equipment damage or
service interruption.
Caution!
Ignoring the safety warning may cause serious injuries, equipment damages or interruption
of some services.
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4.1.3 Safety Operation Guidance
Electrical Safety
1. Tool
When operating in the case of high voltage, use special tools. Do not use general
tools.
2. Power Cable
l Cut off the power before installing or removing the power cable.
l Before connecting the power cable, make sure the cable connection and labels
on the cable comply with the actual installation situation.
Danger!
Do not install or remove the power cable when the power is ON.
Sparks or electric arc may happen when the power cable touches the conductor,
which may cause fire or eye injury.
3. Drilling
l Unqualified drilling will damage the lines and cables in the cabinet. The metal
splashes may enter the cabinet and cause the short circuit on the circuit board.
l When drilling on the cabinets is needed, wear insulating gloves and remove the
cables inside the cabinet before the operation. Take care of your eyes when
drilling, because metal splashes may hurt your eyes. Clean up the metal filings
once the drilling is done.
Warning!
Do not drill on the cabinet at will.
4. Thunderstorm
During thunderstorm, strong electromagnetic field will be produced in the atmosphere.
Thus, to avoid lightning strike, take lightning grounding measures on the equipment
immediately.
Danger!
During thunderstorm, do not perform operations of high voltage, and do not perform
operations on the iron tower or mast.
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Antistatic
The friction caused by human activities is the reason to produce the accumulation of
electrostatic charge. In dry climates, electrostatic voltage carried by the human body
can be accumulated up to 30 kV, which will be kept in the body for couple of hours.
Operators carrying electrostatic charge will be discharged through the device, causing
equipment damage.
To avoid damaging sensitive components by human static electricity, before touching
the devices, such as boards, circuit boards, IC chips, operators should wear antistatic
wristband, and make sure the other end of wristband touches the ground.
To protect people from accidental electric shock, a resistance over 1 MΩ should be
added between the antistatic wristband and the ground.
The antistatic wristband should be inspected periodically. Do not replace the electric
wires on the wristband by any other unqualified ones.
Those electrostatic sensitive boards or modules should not have any contact with the
objects of electrostatic charge or which carries static electricity easily. For example,
friction between the packages of insulating materials and transmission belt could make
the components carrying static electricity. Damages may happen when it is discharged
by contacting human body.
Those electrostatic sensitive boards can be only contacted with qualified discharged
materials, such as antistatic bag. Equipment components need to be stored or
transported in the antistatic bags.
Before the testing equipment is wired with boards or modules, it should be connected
to ground for discharging.
Do not place the boards or modules near strong DC magnetic field. For example,
those monitors with Cathode-ray tube, safety distance is over 10 cm.
Caution!
Electrostatic charge produced by human body will damage the electrostatic sensitive
components on the circuit board, such as Integrated Circuit (IC), etc.
Lifting Weights
The adequate facilities with lifting capacity must be used for assembling, moving or
replacing the heavy equipments.
The staff for lifting operations are required to have qualified training. Lifting tools must
have periodic inspection, and must be used when it is a complete tool kit. Ensure that
the lifting tool can be firmly fixed on the fixture or load-bearing wall before any lifting
operations. Use simplified commands to prevent misoperation.
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Warning!
During lifting operations, do not walk at the bottom of any crane or lifting objects.
Plugging/Unplugging Boards or Modules
To avoid crooking the pin on backplane, plug the boards or modules gently.
Plug the boards or modules along the slot to prevent any short circuit.
When carrying the boards or modules, do not touch the circuits, as well as the
components, connection heads, slots on the boards.
Others
Replacing the components or modifying the equipments may cause extra dangers.
Do not replace the components or modify the equipments without authorization.
From safety point of view, please contact ZTE CORPORATION for any queries.
Caution!
Do not perform maintenance or debugging inside the device, unless there is another
qualified engineer working with you.
4.2 Device Unpacking and Inspection
4.2.1 Unpacking and Checking ZXSDR R8882 L200
Unpacking the Carton
ZXSDR R8882 L200 is transported in a carton.
1. Check the packaging for damage. If it is damaged, make an immediate complaint to
the transport company.
2. Unpack the equipment and check if it is complete according to the packing list.
Inspecting the Device
Check the Device and make sure:
There are no dents, protrusions, bendings, peelings, or marks on the surface.
Fastening bolts are properly tightened in place.
The fittings and accessories required for installation are matched and complete.
Connector links are not broken or missing.
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The supplier should be responsible for inspecting the devices and instruments that are
easy to be damaged.
Separate the inspected parts by category.
4.2.2 Goods Handover
After equipment inspection both the parties should sign the Unpacking and Inspection
Report with each party keeping a copy, with the top copy returned within seven days to the
vendor.
Caution!
If any goods are found to be wrong, missing, or damaged, record the details on the form
and ask for replacements.
4.3 Device Installation
4.3.1 Mounting Device on Wall
Context
Note:
The eRRU in this chapter are only for demonstrating installation scenario.
Prerequisite
Before installing R8882, you should at least leave the following space for product future
maintenance.
Front side: 600 mm
Back side: 40 mm
Left and right side: 100 mm
UP and down side: 250 mm
Steps
1. Mark on installation positions based on layout marking template on wall, as shown in
Figure 4-1, and then drill holes.
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Figure 4-1 Template Hole Position
2. Fix the wall-mounting components onto the wall firmly with the bolts, as shown in
Figure 4-2.
Figure 4-2 Installing Wall-mounting Components
1. Hex Bolt
2. Spring Washer
3. Flat Washer
4. Insulation Washer
5. Wall-Mounting
components
6. Expansion Bolt
The wall-mounting components is installed on the wall, as shown in Figure 4-3.
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Figure 4-3 Wall-mounting Components Fixed on Wall
3. Hang the device on the wall-mounting components on the notch department, as shown
in Figure 4-4.
Figure 4-4 Hang the Device on the Wall-mounting Components
4. Mount the ZXSDR R8882 L200 onto the wall-mounting components, and then fasten
it with the M6x20 bolts, as shown in Figure 4-5.
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Figure 4-5 Fasten Device
1. Insulation washer
2. Spring washer
3. Bolt
The ZXSDR R8882 L200 is installed on wall, as shown in Figure 4-6.
Figure 4-6 ZXSDR R8882 L200 Is Installed on Wall
– End of Steps –
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4.3.2 Mounting Device on Pole
4.3.2.1 Mounting One Device on Pole
Context
The installation accessory for the lightning protection box is needed to be attached in
advance, as shown in Figure 4-7.
Figure 4-7 Attach Installation Accessory for Lightning Protection Box
Steps
1. Fix the wall-mounting components and pole clip together, as shown in Figure 4-8.
Figure 4-8 Fix Wall-mounting Components and Pole Clips
2. Fix the wall-mounting components and pole clips on the pole, as shown in Figure 4-9.
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Figure 4-9 Fix Wall-mounting Components and Pole Clips on Pole
1. Bolt
2. Spring washer
3. Flat washer
4. Wall-mounting
components
5. Pole Clips
3. Hang the device on the notch part of the wall-mounting components, as shown in
Figure 4-10.
Figure 4-10 Hang the Device on the Wall-mounting Components
4. Fix the device on the wall-mounting components, as shown in Figure 4-11.
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Figure 4-11 Fix the Device on the Wall-mounting Components
ZXSDR R8882 L200 is installed firmly on the pole, as shown in Figure 4-12.
Figure 4-12 ZXSDR R8882 L200 Is Installed on Pole
5. Align the lightning protection box to the hole of the installation accessory, and the
fasten the screws, as shown in Figure 4-13.
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Figure 4-13 Attach Lightning Protection Box
– End of Steps –
4.3.2.2 Mounting Two Devices on Pole
Context
The installation accessory for the lightning protection box is needed to be attached in
advance, as shown in Figure 4-14.
Figure 4-14 Attach Installation Accessory for Lightning Protection Box
Steps
1. Fix the wall-mounting components and pole clip together, as shown in Figure 4-15.
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Figure 4-15 Fix Wall-mounting Components and Pole Clips
2. Fix the wall-mounting components and pole clips on the pole, as shown in Figure 4-16.
Figure 4-16 Fix Wall-mounting Components and Pole Clips on Pole
1. Bolt
2. Spring washer
3. Flat washer
4. Wall-mounting
components
5. Pole Clips
3. Hang the devices on the notch part of the wall-mounting components respectively, as
shown in Figure 4-17.
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Figure 4-17 Hang the Devices on the Wall-mounting Components
4. Fix the devices on the wall-mounting components, as shown in Figure 4-18.
Figure 4-18 Fix the Devices on the Wall-mounting Components
5. Align the lightning protection box to the hole of the installation accessory, and the
fasten the screws, as shown in Figure 4-19.
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Figure 4-19 Attach Lightning Protection Box
– End of Steps –
4.3.2.3 Mounting Three devices on Pole
Context
The installation accessory for the lightning protection box is needed to be attached in
advance, as shown in Figure 4-20.
Figure 4-20 Attach Installation Accessory for Lightning Protection Box
Steps
1. Fix the wall-mounting components and pole clip together, as shown in Figure 4-21.
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Figure 4-21 Fix Wall-mounting Components and Pole Clips
2. Fix the wall-mounting components and pole clips on the pole, as shown in Figure 4-22.
Figure 4-22 Fix Wall-mounting Components and Pole Clips on Pole
1. Bolt
2. Spring washer
3. Flat washer
4. Wall-mounting
components
5. Pole Clips
3. Fix the third wall-mounting components by using the expansion components to the
other two ones, as shown in Figure 4-23.
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Figure 4-23 Fix the Third Wall-mounting Components
4. Hang devices on the notch part of the wall-mounting components respectively, as
shown in Figure 4-24.
Figure 4-24 Hang the Devices on the Wall-mounting Components
5. Align the lightning protection box to the hole of the installation accessory, and the
fasten the screws, as shown in Figure 4-25.
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Figure 4-25 Attach Lightning Protection Box
– End of Steps –
4.3.3 Mounting Device on Gantry
Steps
1. Assemble the gantry.
a. Install the vertical shaft and the bottom plate by using the M5x16 screw, as shown
in Figure 4-26.
Figure 4-26 Install the Vertical Shaft and the Bottom Plate
b. Fasten the vertical shaft and the cover plate by using the M5x16 screw, as shown
in Figure 4-27.
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Figure 4-27 Fasten the Vertical Shaft and the Cover Plate
c.
Install the slanted rack by using the M5x16 screw, as shown in Figure 4-28.
Figure 4-28 Install the Slanted Rack
2. Drill holes
a. According to the engineering design drawing, determine the installation position
of the gantry and mark installation holes by using the marking pen.Figure 4-29
shows the installation holes of the gantry.
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Figure 4-29 Mark the Drilling Holes Position
b. Drill holes by using the electric percussion drill (drill bit: φ12) at the places where
installation holes are marked. At the same time, use the vacuum cleaner to remove
the dust generated during the drilling of holes.
c.
Put the expansion sleeve onto the metal cone of the expansion bolt, fasten the
nut slightly, strike the expansion bolt into the installation hole by using the rubber
hammer, fasten the nut tightly to make the bolt fully expanded, and then remove
the nut, as shown in Figure 4-30.
Figure 4-30 Install the Expansion Bolt
3. Install the gantry.
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If the gantry is installed on the concrete floor, use the M10x100 expansion bolt, as
shown in Figure 4-31; if the gantry is installed on the wooden floor, use the M10x40
tapping screw, as shown in Figure 4-32.
Figure 4-31 Install the Gantry on Concrete Floor
Figure 4-32 Install the Gantry on Wooden Floor
4. Install the wall-mounting components on the gantry.
5. Install the ZXSDR R8882 L200 on the wall-mounting components. The device is
installed firmly on the gantry, as shown in Figure 4-33.
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Figure 4-33 ZXSDR R8882 L200 Is Installed on Gantry
Note:
A copper bar is needed to attach at the side of the gantry to connect to the grounding
bar.
– End of Steps –
4.4 Cables Connection
4.4.1 Connection of External Cables
Table 4-2 describes the connection of ZXSDR R8882 L200 external cables.
Table 4-2 Connection of ZXSDR R8882 L200 External Cables
Cable type
Connection relation
Description
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Power cable
Connects the ZXSDR R8882
One end is circular 6-core cable
L200 power interface to the
connector (hole) with plastic
power supply equipment
cover, the other end is reserved
interface
for power cable and dry contact
cable. The length of cable
is based on the engineering
survey.
Grounding cable
Connects one ZXSDR R8882
The grounding cable is made
L200 ground bolt to the copper
up of strands of flame-retardant
bar
wire. The cross sectional area of
ZXSDR R8882 L200 grounding
cable is 16 mm2. Copper lugs
are crimped at both ends of the
grounding cable.
Fiber
Connects to eBBU
Environment monitor cable
Connects the ZXSDR R8882
For the environment monitor
L200 environment monitor
cable, end A is PIN header.
interface to the external monitor
End B, with 3m length in total,
components or the dry contact.
is made depending on the field
engineering conditions.
AISG control cable
Connects the ZXSDR R8882
AISG is used to control the
L200 debugging interface
electrical-adjustment antenna.
(AISG) to the control interface of
electrical-adjustment antenna.
Antenna jumper
Connects ZXSDR R8882 L200
The RF jumper usually uses
to main feeder
the finished 1/2″ jumper with
2m length. The jumper can
be customized depending on
actual conditions. One end
of the jumper is N connector
(male) and the other end is DIN
connector (female).
4.4.2 External Cable Installation Flow
Figure 4-34 lists the installation flow of external cable. This flow can be adjusted based on
actual conditions.
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Figure 4-34 External Cable Installation Flow
4.4.3 Connecting Power Cable
Context
Figure 4-35 shows power cable connection of PIMDC.
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Figure 4-35 PIMDC Power Cable Connection
1. Power input cable of the
PIMDC
2. Power input cable of the
R8882
3. Dry contact cable
Figure 4-36 shows the power cable of ZXSDR R8882 L200.
Figure 4-36 Power Cable
Table 4-3 describes the color and definition of inner core of the power cable.
Table 4-3 Color and Definition of Inner Core of the Power Cable
Core color
Definition
Signal Description
Blue
-48V
-48V
Blue
-48V
-48V
Black
-48 V GND
-48V ground
Black
-48 V GND
-48V ground
White
NODE_IN+
Dry contact
Brown
NODE_IN-
Dry contact
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Note:
1. If the two-core cable is adopted, the blue core cable stands for -48 V and the black
core cable stands for -48 V GND.
2. If the four-core cable is adopted, the two blue core cables connected in parallel stand
for -48 V and the black core cables connected in parallel stand for -48 V GND.
Steps
1. Connect power cable from PIMDC to ZXSDR R8882 L200
a. Connect end A of power cable to the PWR interface of the ZXSDR R8882 L200.
b. Strip the protective coat of end B, and then connect the blue wires to -48V terminal
and the black wires to -48VRTN terminal. Connect the white and blue dry contact
wires to the Alarm terminals, as shown in Figure 4-37.
Figure 4-37 PIMDC Connection (to R8882)
2. Connect power cable from PIMDC to lightning protection box
a. Peel off an appropriate length of insulating layer of the PIMDC power input cable.
b. Lead the end A of the cable through the waterproof plastic ring of the PIMDC,
and then connect the blue wires to the -48V terminal and the black wires to the
-48VRTN terminal. Fasten the power cable with a latch, as shown in Figure 4-38.
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Figure 4-38 PIMDC Connection (to Lightning Protection Box)
Note:
This latch should be fully contacted with the shielded layer of the PIMDC input
power cable.
c.
Connect the end B of the PIMDC input power cable to the output port of the indoor
DC lightning protection box. Connect the blue wires to the -48V terminal and the
black wires to the -48VRTN terminal.
Note:
Power for sectors α, β, and γ are connected to SPD-1, SPD-2, and SPD-3
terminals respectively.
– End of Steps –
4.4.4 Connecting Grounding Cable
Context
The grounding cable of ZXSDR R8882 L200 is made up of strands of flame-retardant wire.
Copper lugs are needed to be crimped at both ends of the grounding cable in advance, as
shown in Figure 4-39.
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Figure 4-39 Grounding Cable
Steps
1. Connect one end of grounding cable to the grounding terminal of the device, as shown
in Figure 4-40.
Figure 4-40 R8882 Grounding Bar Connection
2. Connect the other end of the ground cable to PIMDC, and then connection the PIMDC
to outdoor grounding bar, as shown in Figure 4-41.
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Figure 4-41 PIMDC Grounding Bar Connection
3. Attach the label on the grounding cable.
4. Measure the grounding resistance and make sure it is less than 5 ohms.
– End of Steps –
4.4.5 Connecting Fiber Between eBBU and eRRU
Steps
1. Remove the protection cap from the optical fiber, and then detach the outer protection
cover, as shown in Figure 4-42.
Figure 4-42 Remove Protection Cap
2. Remove two white covers, as shown in Figure 4-43.
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Figure 4-43 Remove Covers
3. Insert the optical fiber into the OPT1 port until it locks into place with a snap, as shown
in Figure 4-44.
Figure 4-44 Insert Optical Fiber
4. Insert the transparent sleeve into the OPT port fully, as shown in Figure 4-45.
Figure 4-45 Insert Transparent Sleeve
5. Tighten the outer protection cover fully.
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Figure 4-46 Tighten Connection
6. Connect the optical fibers of sectors α, β, and γ to the TX0/RX0, TX1/RX1, and
TX2/RX2 ports of the BPL board located in the eBBU.
– End of Steps –
4.4.6 Connecting Environment Monitor Cable
Context
The environment monitor cable provides a 485 interface, used for ZXSDR R8882 L200
environment monitor. It also provides four extension accesses for external dry contact
monitor.
End A is circular 8-core plug and end B is made depending on actual conditions. The total
length is 3m. Figure 4-47 shows the structure of environment monitor cable.
Figure 4-47 Environment Monitor Cable
The connector, connecting the environment monitoring cable to ZXSDR R8882 L200, is
8-core straight welded connector (pin) mounted on panel. The connector appearance is
shown in Figure 4-48.
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Figure 4-48 Appearance of Environment Monitor Cable
The cable connector pins and connection are shown in Table 4-4.
Table 4-4 Cable Pin Description
Pin
Core color
Signal Description
PIN1
Brown
Dry contact input, positive polarity
PIN2
Yellow
Dry contact input, negative polarity
PIN3
Blue
Dry contact input, positive polarity
PIN4
White
Dry contact input, negative polarity
PIN5
Green
Positive RS485 bus signal
PIN6
Grey
Negative RS485 bus signal
PIN7
Red
Positive RS485 bus signal
PIN8
Black
Negative RS485 bus signal
Note:
Connect the first dry contact of eRRU to outdoor DC lightning protection box.
Steps
1. Connect end A of environment monitor cable to environment monitor interface of
ZXSDR R8882 L200 cabinet.
2. Connect end B of environment monitor cable to external monitor part or dry contact.
3. Attach the labels on end B.
– End of Steps –
4.4.7 Connecting AISG Control Cable
Context
AISG is used to control the electrical-adjustment antenna.
Figure 4-49 shows the structure of AISG control cable.
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Figure 4-49 Structure of AISG Control Cable
Table 4-5 describes the meaning of sequence number of AISG control cable.
Table 4-5 Meaning of Sequence Number of AISG Control Cable
Pins at end A
Pins at End B
Name
Meaning
PIN3
PIN1
RS485B
RS485-
PIN5
PIN2
RS485A
RS485+
PIN6
PIN3, PIN4
DC
DC output
PIN7
PIN5, PIN6
DC RTN
DC RTN
NC
Null
PIN1, PIN2, PIN4, PIN8
Steps
1. Connect end A to ZXSDR R8882 L200 debugging interface (AISG) and screw down
the bolt.
2. Connect end B to the control interface of electrical adjustment antenna and screw
down the bolt.
– End of Steps –
4.4.8 Connecting the RF Jumpers
Steps
1. Connect the A-ends of two RF jumpers to the ANT1 and ANT4 ports of the ZXSDR
R8882 L200. Connect the B-end to the corresponding port of the main antenna.
2. Spiral-wrap two-layer ultraviolet-proof adhesive tape around the ANT2 and ANT3
ports, and then tighten them fully by using black ultraviolet-proof cable ties.
– End of Steps –
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Figures
Figure 2-1 ZTE Distributed eNodeB Solution............................................................. 2-2
Figure 2-2 Product Location...................................................................................... 2-3
Figure 2-3 Product Overall Appearance .................................................................... 2-5
Figure 2-4 Star Networking Mode ............................................................................. 2-6
Figure 2-5 Operate and Maintain System Remotely .................................................. 2-6
Figure 2-6 Operate and Maintain System Locally ...................................................... 2-7
Figure 2-7 Product External Interfaces and Grounding Terminal................................ 2-7
Figure 2-8 LMT Interface .......................................................................................... 2-8
Figure 2-9 Product Indicators.................................................................................... 2-9
Figure 4-1 Template Hole Position ............................................................................ 4-7
Figure 4-2
Installing Wall-mounting Components ..................................................... 4-7
Figure 4-3 Wall-mounting Components Fixed on Wall ............................................... 4-8
Figure 4-4 Hang the Device on the Wall-mounting Components ............................... 4-8
Figure 4-5 Fasten Device.......................................................................................... 4-9
Figure 4-6 ZXSDR R8882 L200 Is Installed on Wall .................................................. 4-9
Figure 4-7 Attach Installation Accessory for Lightning Protection Box ..................... 4-10
Figure 4-8 Fix Wall-mounting Components and Pole Clips...................................... 4-10
Figure 4-9 Fix Wall-mounting Components and Pole Clips on Pole ......................... 4-11
Figure 4-10 Hang the Device on the Wall-mounting Components............................ 4-11
Figure 4-11 Fix the Device on the Wall-mounting Components ............................... 4-12
Figure 4-12 ZXSDR R8882 L200 Is Installed on Pole.............................................. 4-12
Figure 4-13 Attach Lightning Protection Box ........................................................... 4-13
Figure 4-14 Attach Installation Accessory for Lightning Protection Box ................... 4-13
Figure 4-15 Fix Wall-mounting Components and Pole Clips .................................... 4-14
Figure 4-16 Fix Wall-mounting Components and Pole Clips on Pole ....................... 4-14
Figure 4-17 Hang the Devices on the Wall-mounting Components.......................... 4-15
Figure 4-18 Fix the Devices on the Wall-mounting Components ............................. 4-15
Figure 4-19 Attach Lightning Protection Box ........................................................... 4-16
Figure 4-20 Attach Installation Accessory for Lightning Protection Box ................... 4-16
Figure 4-21 Fix Wall-mounting Components and Pole Clips .................................... 4-17
Figure 4-22 Fix Wall-mounting Components and Pole Clips on Pole ....................... 4-17
Figure 4-23 Fix the Third Wall-mounting Components............................................. 4-18
SJ-20110104194923-001|2011-01-19(R1.0)
ZTE Proprietary and Confidential
ZXSDR R8882 L200 User Manual
Figure 4-24 Hang the Devices on the Wall-mounting Components.......................... 4-18
Figure 4-25
Attach Lightning Protection Box .......................................................... 4-19
Figure 4-26
Install the Vertical Shaft and the Bottom Plate ..................................... 4-19
Figure 4-27
Fasten the Vertical Shaft and the Cover Plate ..................................... 4-20
Figure 4-28 Install the Slanted Rack ....................................................................... 4-20
Figure 4-29 Mark the Drilling Holes Position ........................................................... 4-21
Figure 4-30 Install the Expansion Bolt..................................................................... 4-21
Figure 4-31
Install the Gantry on Concrete Floor.................................................... 4-22
Figure 4-32 Install the Gantry on Wooden Floor ...................................................... 4-22
Figure 4-33 ZXSDR R8882 L200 Is Installed on Gantry .......................................... 4-23
Figure 4-34 External Cable Installation Flow ........................................................... 4-25
Figure 4-35 PIMDC Power Cable Connection ......................................................... 4-26
Figure 4-36 Power Cable ........................................................................................ 4-26
Figure 4-37 PIMDC Connection (to R8882)............................................................. 4-27
Figure 4-38 PIMDC Connection (to Lightning Protection Box) ................................. 4-28
Figure 4-39 Grounding Cable.................................................................................. 4-29
Figure 4-40 R8882 Grounding Bar Connection ....................................................... 4-29
Figure 4-41 PIMDC Grounding Bar Connection ...................................................... 4-30
Figure 4-42 Remove Protection Cap ....................................................................... 4-30
Figure 4-43 Remove Covers ................................................................................... 4-31
Figure 4-44 Insert Optical Fiber............................................................................... 4-31
Figure 4-45 Insert Transparent Sleeve .................................................................... 4-31
Figure 4-46 Tighten Connection .............................................................................. 4-32
Figure 4-47 Environment Monitor Cable.................................................................. 4-32
Figure 4-48 Appearance of Environment Monitor Cable .......................................... 4-33
Figure 4-49 Structure of AISG Control Cable .......................................................... 4-34
II
SJ-20110104194923-001|2011-01-19(R1.0)
ZTE Proprietary and Confidential
Tables
Table 2-1 Product External Interfaces Description ..................................................... 2-8
Table 2-2 Product Indicator Description..................................................................... 2-9
Table 3-1 CPRI Interface Index ................................................................................. 3-2
Table 3-2 Receiver Sensitivity ................................................................................... 3-3
Table 4-1
Symbol type and meanings ...................................................................... 4-1
Table 4-2 Connection of ZXSDR R8882 L200 External Cables ............................... 4-23
Table 4-3 Color and Definition of Inner Core of the Power Cable............................. 4-26
Table 4-4 Cable Pin Description .............................................................................. 4-33
Table 4-5 Meaning of Sequence Number of AISG Control Cable............................. 4-34
III
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Tables
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IV
SJ-20110104194923-001|2011-01-19(R1.0)
ZTE Proprietary and Confidential
Glossary
AISG
- Antenna Interface Standards Group
- 天线接口标准组
CPRI
- Common Public Radio Interface
- 通用公共无线接口
CRC
- Cyclic Redundancy Check
- 循环冗余校验
FCC
- Federal Communication Commission
- 联邦通信委员会（美国）
LED
- Light Emitting Diode
- 发光二极管
QAM
- Quadrature Amplitude Modulation
- 正交幅度调制
QPSK
- Quadrature Phase Shift Keying
- 四相移相键控/正交移相键控
SDR
- Software Defined Radio
- 软件定义无线电设备
VSWR
- Voltage Standing Wave Ratio
- 电压驻波比
eBBU
- evolved Base Band Unit
- 演进的基带资源单元
eRRU
- evolved Remote Radio Unit
- 演进的远端射频单元
SJ-20110104194923-001|2011-01-19(R1.0)
ZTE Proprietary and Confidential

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