ZTE R8862AS7100 Macro Radio Remote Unit User Manual ZXSDR R8862A Product Description
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ZXSDR R8862A Product Description
UniRAN 16/GUL Multi-mode
ZXSDR R8862A Product Description
ZTE Confidential & Proprietary 1
ZXSDR R8862A Product Description
Version
Date
Author
Reviewer
Notes
V1.0
2017/01/20
Yu Yang
1. Update capacity
2. Update receiver sensitivity
3. Update power consumption
4. Update CPRI interface
V1.1
2017/03/07
Yu Yang
1. Add 710MHz & 700MHz technical
specifications
© 2017 ZTE Corporation. All rights reserved.
ZTE CONFIDENTIAL: This document contains proprietary information of ZTE and is not to be disclosed or used
without the prior written permission of ZTE.
Due to update and improvement of ZTE products and technologies, information in this document is subjected to
change without notice.
ZXSDR R8862A Product Description
2 ZTE Confidential & Proprietary
TABLE OF CONTENTS
1 Overview ............................................................................................................ 5
1.1 Introduction .......................................................................................................... 5
1.2 LTE Network Architecture .................................................................................... 5
1.3 Benefits ................................................................................................................ 6
1.4 Application Scenarios .......................................................................................... 7
2 Product Architecture ......................................................................................... 8
2.1 Physical Appearance ........................................................................................... 8
2.2 Hardware Architecture ......................................................................................... 8
2.2.1 QTR ..................................................................................................................... 9
2.2.2 DFL .................................................................................................................... 10
2.2.3 PA ...................................................................................................................... 10
2.2.4 PWR .................................................................................................................. 11
2.2.5 PIB ..................................................................................................................... 11
2.3 Software Architecture ......................................................................................... 11
2.4 Functionality ....................................................................................................... 12
3 Technical Specifications ................................................................................. 13
3.1 Physical Indices ................................................................................................. 13
3.2 Performance Indices .......................................................................................... 14
3.2.1 Operation Frequency Band ................................................................................ 14
3.2.2 Capacity ............................................................................................................. 15
3.2.3 ToC Output Power ............................................................................................. 16
3.2.4 Bandwidth .......................................................................................................... 16
3.2.5 Receiver Sensitivity ............................................................................................ 16
3.3 Power Indices .................................................................................................... 17
3.3.1 Power Requirements ......................................................................................... 17
3.3.2 Power Consumption ........................................................................................... 17
3.4 Interface Indices ................................................................................................ 18
3.5 Transmission ..................................................................................................... 21
3.6 Working Environment Indices............................................................................. 21
3.7 Electromagnetic Compatibility Indices ................................................................ 22
3.8 Reliability Indices ............................................................................................... 22
4 Glossary ........................................................................................................... 23
ZXSDR R8862A Product Description
ZTE Confidential & Proprietary 3
FIGURES
Figure 1-1 LTE Network Architecture .................................................................................. 6
Figure 1-2 BS8700 Application Scenarios ........................................................................... 7
Figure 2-1 R8862A Appearance.......................................................................................... 8
Figure 2-2 R8862A System Structure ................................................................................. 9
Figure 2-3 R8862A Software Architecture ..........................................................................11
Figure 3-1 R8862A Physical Appearance Type I (850/900/1700/1800/2100/2600 MHz) ....13
Figure 3-2 R8862A Physical Appearance Type II (AP700/710/700 MHz) ...........................13
Figure 3-3 External Interfaces at the Bottom ......................................................................19
Figure 3-4 External Interfaces on the Right Side ................................................................20
Figure 3-5 LED Indicators on the Panel .............................................................................21
TABLES
Table 3-1 Physical Indices .................................................................................................14
Table 3-2 Operation Frequency Band ................................................................................14
Table 3-3 Capacity .............................................................................................................15
Table 3-4 ToC Output Power .............................................................................................16
Table 3-5 R8862A Receiver Sensitivity ..............................................................................17
Table 3-6 Power Supply .....................................................................................................17
Table 3-7 R8862A Power Consumption in LTE Single Mode .............................................17
Table 3-8 R8862A Power Consumption in LTE Single Mode .............................................18
Table 3-9 R8862A Power Consumption in U/L Dual-mode.................................................18
Table 3-10 R8862A Power Consumption in G/L Dual-mode ..............................................18
Table 3-11 Description of the External Interfaces at the Bottom .........................................19
Table 3-12 Description of the External Interfaces on the Right Side ...................................20
Table 3-13 CPRI Interfaces ................................................................................................21
ZXSDR R8862A Product Description
4 ZTE Confidential & Proprietary
Table 3-14 Environment Indices.........................................................................................21
Table 3-15 Electromagnetic Compatibility Indices ..............................................................22
Table 3-16 R8862A Reliability Characteristics ......................................................................22
ZXSDR R8862A Product Description
ZTE Confidential & Proprietary 5
1 Overview
1.1 Introduction
This document provides a high level description of ZTE ZXSDR R8862A (hereinafter
R8862A), which is one new compact distributed RRU (Remote Radio Unit) used in ZTE
wireless total solution. The RRU is based on common ZTE compacted RRU platform,
and can work in GSM, CDMA, UMTS or LTE single mode or Multi-Mode at the same
frequency band.
The document is designed to give an overview of the characteristics of R8862A, the key
benefits, architecture, functionality and services. The document also describes the
system capabilities.
1.2 LTE Network Architecture
LTE is a market driven technology, which offers higher data rate (150Mbps downlink and
75Mbps uplink for each cell @ 20MHz, MIMO 2*2) with low latency and short setup delay
that aim to improve end-user throughput, increase cell capacity, reduce user plane
latency, and consequently offer superior user experience with full mobility. The flat, all
IP-based network architecture and improved spectrum efficiency (2 to 4 times higher
compared with HSPA Release 6) have laid the foundation for low cost per bit delivery
and overall CAPEX/OPEX reduction.
Unlike other technologies like HSPA, LTE is contained within a new Packet Core
architecture called EPC (Evolved Packet Core) network architecture. Technically, 3GPP
specifies the EPC to support the E-UTRAN. TCP/IP protocols are adopted in EPC, so
LTE can support all IP-based services including voice, on-line gaming, IPTV and
message with end-to-end QoS (Quality of Service). The EPC network architecture can
improve the connection and hand-over to other fixed-line and wireless access
technologies, which enables operator to deliver a seamless mobility experience.
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Figure 1-1 LTE Network Architecture
To achieve all the targets mentioned herein, LTE PHY (Physical Layer) employs
advanced technologies including Orthogonal Frequency Division Multiple Access
(OFDMA) and Multiple-Input and Multiple-Output (MIMO) data transmission. Furthermore,
the LTE PHY deploys the OFDMA for the downlink and Single Carrier Frequency
Division Multiple Access (SC-FDMA) for the uplink. These technologies will further
minimize the LTE system and UE complexities while allowing flexible spectrum
deployment in the existing or new frequency spectrum.
1.3 Benefits
2*4 MIMO Capability, Better Performance
R8862A is based on new compacted RRU platform and high efficiency Power
Amplifier technology. With two transmitting channels and four receiving channels, it
supports 2*4 MIMO to improve coverage, data throughput and peak download
speed.
Faster deployment
EUTRA
N
X2
X2
X2
S1
S1
S1
S1
EPC
MME / S-GW
MME / S-GW
EPS
eNodeB –
Distributed SDR
eNodeB –
Distributed SDR
eNodeB –
Integrated SDR
ZXSDR R8862A Product Description
ZTE Confidential & Proprietary 7
R8862A is 12L in volume and 15Kg in weight. It is portable to transport and flexible
to install on the pole, tower and wall, thus reducing OPEX.
Higher Efficiency, Lower TCO
R8862A’s PA efficiency can reach up to 45% (The PA efficiency is different based
on different working frequency bands);
It supports dynamic adaptive PA power supply due to the output power, which
reduces power consumption.
It is passive thermal dissipation designed, so it is power saving and less noisy.
Integrated lightning protection unit
R8862A supports integrated Lightning protection unit (PIB), and the protection level
is 20 KA.
1.4 Application Scenarios
R8862A as the Remote Radio Unit (RRU) and Baseband Unit (BBU) comprise
distributed macro eNodeB BS8700.
Typical application scenarios of BS8700 are shown in the following figure:
Figure 1-2 BS8700 Application Scenarios
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ZTE Confidential & Proprietary 9
Figure 2-2 R8862A System Structure
Notes: QTR means Quad-channel Transceiver used for 2T4R.
R8862A includes 5 main hardware modules.
Quad-channel Transceiver (QTR)
Duplex Filters LNA (DFL)
2x Power Amplifier (PA)
Power module (PWR)
Protecting Interface Board (PIB)
2.2.1 QTR
The QTR has following functions:
Process 4 received signals and 2 transmitted signals;
Radio signal Up/Down Conversion;
PIB
QTR
PWR
DFL
CPRI 1
CPRI 2
PWR ALM
P
A
O
u
t
DC in
ANT1 ANT2 ANT3 ANT4
R8862A
2 x PA
PA Out
GND
CPRI links
AISG/MON
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10 ZTE Confidential & Proprietary
Downlink IQ signal multiplexing and uplink signal de-multiplexing;
Signal amplifying, filter, A/D conversion and D/A conversion;
Convert between optical and electric signal;
Capture reference clock signal from baseband unit and provide clock signal to other
units;
Voltage Standing Wave Ratio (VSWR) measurement and report;
Hardware failure self-detection and alarm;
Over-heat detection and alarm;
Provide communication interfaces, 2 CPRI interfaces, One DB15 port, for dry
contact, local debugging or AISG connection through different kind of cables;
Reset function.
2.2.2 DFL
The DFL has following functions:
Combine and isolate transmitted and received signals;
Filter the transmitted signal and received signal;
Provide DFL alarm monitor function.
2.2.3 PA
The PA has following functions:
Perform radio signal amplifying function;
Temperature report function;
Low-Noise-Amplifier (LNA) function;
Over-current, over-heat, over-power and over-standing wave protecting function.
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ZTE Confidential & Proprietary 11
2.2.4 PWR
The PWR has following functions:
Provide power supply function;
Monitor input over-voltage/under-voltage, input power outage, output
over-voltage/under-voltage, output over-current alarm, and report it to QTR board.
2.2.5 PIB
The PIB has the following function:
Integrated lightning protect unit for the AISG and dry contacts, and the protection
level is 20 KA.
2.3 Software Architecture
The software architecture of R8862A can be divided into two layers: SDR Unified
Platform Software and Application Software. The architecture is shown in the following
figure:
Figure 2-3 R8862A Software Architecture
Hardware
BSP
OSS
Linux
OAM
SDR Unified
Platform
Software
Application
Software
Hardware
System
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12 ZTE Confidential & Proprietary
The Operating and Maintenance (OAM) sub-system is the application layer. Its main
functions are software downloading, configuration, management, system maintenance
and measurement.
The Operation Support Sub-system (OSS) is the supporting layer in this entire
framework. It is a hardware independent layer that provides basic functions such as
scheduling, timer, and memory management, communication, sequencing control,
monitoring, alarming and logging.
The Board Support Package (BSP) provides device driver & initialization and supports
basic functions like alarming and monitoring. It also provides the related interfaces and
services to the Operating System.
2.4 Functionality
R8862A is the remote radio unit of distributed base station. The signal is transmitted
/received through R8862A to/from base band processing unit for further processing via
standard CPRI interface.
By applying the distributed system, the feeder loss will be eliminated when the radio unit
is positioned close to the antenna. The coverage is enlarged with this solution.
The functions of R8862A include:
Support the LTE configuration of 1.4MHz/3MHz/5MHz/10MHz/15MHz/20MHz
scalable bandwidth defined in 3GPP
Supports the UMTS configuration of 5MHz/4.8MHz/4.6MHz/4.4MHz/4.2MHz
channel interval of each carrier
Band Supported: AP700/710/700/850/900/AWS/1800/2100/2600 MHz
Support 2T4R(S8500/S1700/S1800/S2100/S2600) in one box which can optimize
spectrum efficiency greatly and improve network uplink performance
Support 64QAM modulation in both LTE downlink and uplink
Support transmit power report function for every carrier
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ZTE Confidential & Proprietary 13
Support overload protection function for power amplifier
Support transmit channel switching on/off function
R8862A software failure will not affect the running of BBU and other R8862As which
are connected to it.
3 Technical Specifications
3.1 Physical Indices
R8862A is one new compacted RRU. For band 1/3/5/7/8, the dimension is 12L and the
weight (without sunshield) 15 kg. For band 28/13/12+17, due to increased depth of
duplexer, the size is a little bigger than the others.
Figure 3-1 R8862A Physical Appearance Type I (850/900/1700/1800/2100/2600 MHz)
Figure 3-2 R8862A Physical Appearance Type II (AP700/710/700 MHz)
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Table 3-1 Physical Indices
Module
Dimension
R8862A
S8500/S9000/S1700/S1800/S2100/S
2600/S2601
Size (H*W*D): 422 * 218 * 133 mm3, 12L
Weight: 15 kg
Color: Silver gray
R8862A S7200/S7000/S7100
Size (H*W*D): 422 * 218 * 165 mm3, 15L
Weight: 17 kg
Color: Silver gray
3.2 Performance Indices
3.2.1 Operation Frequency Band
Table 3-2 Operation Frequency Band
Module
Band
Operation Radio
Frequency Band
Mode
R8862A S7200
B28, AP700 MHz
Tx: 758 – 803 MHz
Rx: 703 – 748 MHz
LTE
R8862A S7100
B13
710 MHz
Tx: 746 MHz–756 MHz
Rx: 777 MHz–787 MHz
LTE
R8862A S7000
B12+B17
700 MHz
Tx: 728 MHz–746 MHz
Rx: 698 MHz–716 MHz
LTE
R8862A S8500
B5, 850 MHz
Tx: 859– 894 MHz
Rx: 814 – 849 MHz
UMTS/LTE
R8862A S9000
B8, 900 MHz
Type1:
Tx: 925 – 960 MHz
Rx: 880 – 915 MHz
Type2:
Tx: 934 – 960 MHz
Rx: 889 – 915 MHz
GSM/UMTS/LTE
R8862A S1700
B4, AWS
Tx: 2110 – 2155 MHz
Rx: 1710 – 1755 MHz
UMTS/LTE
R8862A S1800
B3, 1800 MHz
Type1:
GSM/LTE
ZXSDR R8862A Product Description
ZTE Confidential & Proprietary 15
Module
Band
Operation Radio
Frequency Band
Mode
Tx: 1805 – 1860 MHz
Rx: 1710 – 1765 MHz
Type2:
Tx: 1830 – 1880 MHz
Rx: 1735 – 1785 MHz
Type3:
Tx: 1805 – 1880 MHz
Rx: 1710 – 1785 MHz
R8862A S2100
B1, 2100 MHz
Tx: 2110 - 2170 MHz
Rx: 1920 - 1980 MHz
UMTS/LTE
R8862A S2600
R8862A S2601
B7, 2600 MHz
Tx: 2620 – 2690 MHz
Rx: 2500 – 2570 MHz
LTE
3.2.2 Capacity
Table 3-3 Capacity
System
RRU Capacity
LTE single mode
2 LTE 20MHz 2T2R/2T4R cell
GSM single mode 900 MHz
8 GSM TRXs
GSM single mode 1800
MHz
12 GSM TRXs
GU dual-mode 900MHz
8 GSM TRXs + 4 UMTS carriers
GL dual-mode 900 MHz
8 GSM TRXs +1 LTE 10MHz 2T2R Cell
GL dual-mode 1800 MHz
8 GSM TRXs +1 LTE 20MHz 2T4R Cell or
4 GSM TRXs + 2 LTE 20MHz 2T4R Cell
UMTS single mode 2100
MHz
8 UMTS carriers (non-MIMO)
4 UMTS carriers (MIMO)
UL dual-mode 850MHz
4 UMTS carriers + 1 LTE 10MHz 2T2R/2T4R Cell
UL dual-mode 900MHz
4 UMTS carriers + 1 LTE 10MHz 2T2R Cell
UL dual-mode 1700MHz
4 UMTS carriers + 1 LTE 20MHz 2T2R/2T4R Cell
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16 ZTE Confidential & Proprietary
UL dual-mode 2100
MHz/AWS
2 UMTS carriers (MIMO) + 2 LTE 20MHz 2T2R Cell, or
4 UMTS carriers (non-MIMO) + 1 LTE 20MHz 2T2R
Cell
GUL multi-mode 900MHz
4 GSM TRXs + 2 UMTS carriers + 1 LTE 10MHz 2T2R
Cell
3.2.3 ToC Output Power
Table 3-4 ToC Output Power
Type
PA Output Power
TOC Output Power [1]
R8862A S7200 (AP700)
2*75W
2*60W
R8862A S7100
2*55 W
2*40 W
R8862A S7000
2*55 W
2*40 W
R8862A S8500
2*75W
2*60W
R8862A S9000
2*75W
2*60W
R8862A S1700
2*75W
2*60W
R8862A S1800
2*75W
2*60W
R8862A S2100
2*75W
2*60W
R8862A S2600
2*50W
2*40W
R8862A S2601
2*75W
2*60W
3.2.4 Bandwidth
R8862A supports all LTE bandwidth defined in 3GPP:
1.4M, 3M, 5M, 10M, 15M and 20MHz.
3.2.5 Receiver Sensitivity
The receiver sensitivity of R8862A is shown as following table.
1
The TOC here means the max capability of the hardware. The specific TOC output power is limited by the
license.
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Table 3-5 R8862A Receiver Sensitivity
Mode
Frequency
Spectrum(MHz)
Single Antenna
(dBm)
Dual Antennas
(dBm)
Four Antennas
(dBm)
GSM
900/1800
-113.5
-116.1
N/A
UMTS
2100
-126.5
-129.2
N/A
900
-126.4
-129.1
N/A
LTE
710/700/AP700/
850/900
-106.6
-109.4
-112.2
AWS/1800/2100/
2600
-106.4
-109.2
-112
3.3 Power Indices
3.3.1 Power Requirements
The following table describes the power supply and the fluctuation range.
Table 3-6 Power Supply
Item
Index
Power Supply
DC: -48 V (-37 V – -60 V DC)
AC: 220 V / 110 V (100 V – 240 V AC)
R8862A supports integrated lightning protection module for DC power supply. Its
protection level is 20 KA.
3.3.2 Power Consumption
Power consumption of R8862A in UL dual-mode and LTE single mode are shown in the
table below.
Table 3-7 R8862A Power Consumption in LTE Single Mode
Configuration: LTE single carrier, 2PA, 60W/LTE
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18 ZTE Confidential & Proprietary
Module
Average PC (W)
Peak PC (W)
R8862A S7200
220
440
R8862A S8500
210
430
R8862A S9000
210
415
R8862A S1800
220
370
R8862A S2100
210
440
R8862A S2601
240
470
Table 3-8 R8862A Power Consumption in LTE Single Mode
Configuration: LTE single carrier, 2PA, 40W/LTE
Module
Average PC (W)
Peak PC (W)
R8862A S7100
210
400
R8862A S7000
210
400
R8862A S2600
230
430
Table 3-9 R8862A Power Consumption in U/L Dual-mode
Configuration: 4U+1L 2*2 MIMO, 2PA, 20W/LTE, 20W/UMTS
Module
Average PC (W)
Peak PC (W)
R8862A S2100
250
420
Table 3-10 R8862A Power Consumption in G/L Dual-mode
Configuration: 4G+1L 2*2 MIMO, 2PA, 20W/LTE, 20W/GSM
Module
Average PC (W)
Peak PC (W)
R8862A S9000
290
415
R8862A S1800
245
370
3.4 Interface Indices
The external interfaces of the R8862A are located at the bottom and on the front side of
the chassis.
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Figure 3-3 shows the external interfaces at the bottom of the R8862A chassis.
Figure 3-3 External Interfaces at the Bottom
For a description of the external interfaces at the bottom of the R8862A chassis, refer to
Table 3-11.
Table 3-11 Description of the External Interfaces at the Bottom
No.
Label
Interface
Interface Type/Connector
1
AISG/MON
AISG equipment interface
MON external monitoring
interface
LMT O&M Ethernet interface
DB15 connector
2
GND
Protective grounding interface
16 mm2 yellow-green round
terminal
3
ANT1
(TX/RX)
TX/RX antenna interface
50 Ω DIN-mode connector
4
ANT2 (RX)
RX antenna interface
50 Ω DIN-mode connector
5
ANT3 (RX)
RX antenna interface
50 Ω DIN-mode connector
1 2
3 4 5 6
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No.
Label
Interface
Interface Type/Connector
6
ANT4
(TX/RX)
TX/RX antenna interface
50 Ω DIN-mode connector
Figure 3-4 shows the external interfaces on the right side of the R8862A chassis.
Figure 3-4 External Interfaces on the Right Side
For a description of the external interfaces on the right side of the R8862A chassis, refer
to Table 3-12.
Table 3-12 Description of the External Interfaces on the Right Side
No.
Label
Interface
Interface Type/Connector
1
OPT1
Interface for communication
between the RRU and a BBU,
or RRU cascading interface
LC-type optical interface (IEC
874)
2
OPT2
RRU cascading interface
LC-type optical interface (IEC
874)
3
PWR
Power input interface
2-pin customized connector
Additionally, R8862A provides 6 LED indicators. The indicators on the R8862A panel
indicate the operating status of the RRU. The indicators are located on the front side of
the chassis, see Figure 3-5.
1
2
3
Maintenance
window open Maintenance
window close
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Figure 3-5 LED Indicators on the Panel
3.5 Transmission
R8862A is connected to BBU through CPRI interfaces. For more information about CPRI
interfaces, refer to the following table.
Table 3-13 CPRI Interfaces
Item
Value
Interface
Type
Speed
Standard
CPRI interface
2
SFP (LC)
6Gbps [2]
CPRI V4.2
3.6 Working Environment Indices
Table 3-14 Environment Indices
Item
Characteristics
Temperature
-40 to +55 °C
Relative Humidity
5% to 100%
Waterproof/Dustproof
IP65
Ground
≤5 Ω; earth resistance can be less than 10 Ω in
thunder-less area where thunderstorm days is less than 20
2
The speed here refers to the max capability of the hardware. The specific speed depends on the optical module
configuration.
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22 ZTE Confidential & Proprietary
Item
Characteristics
per year.
3.7 Electromagnetic Compatibility Indices
Table 3-15 Electromagnetic Compatibility Indices
Item
Characteristics
Static Discharge
Immunity
Contact Discharge: ±6000V
Air Discharge: ±8000V
Surge Impact Immunity
DC Power port Line(Ground): ±2000V
3.8 Reliability Indices
Table 3-16 R8862A Reliability Characteristics
Item
R8862A
MTBF
DC: ≥464,000 hours
AC: ≥442,000 hours
MTTR
1 hour
Availability index
DC: ≥99.999784%
AC: ≥99.999774%
Down duration
DC: ≤1.133 min/year
AC: ≤1.189 min/year
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4 Glossary
Abbreviations
Full Name
3GPP
3rd Generation Partnership Project
BBU
Base Band processing Unit
BSP
Board Support Package
CAPEX
Capital Expenditure
CPRI
Common Public Radio Interface
DIF
Digital Intermediate Frequency
DL
Downlink
DFL
Duplexer & Filters
DPD
Digital Pre-Distortion
EUTRAN
Evolved Universal Mobile Telecommunications System
GSM
Global System for Mobile communications
HSPA+
HSPA Evolution
LMT
Local Maintenance Terminal
LNA
Low-Noise-Amplifier
LTE
Long Term Evolution
MCPA
Multi-Carrier Power Amplifier
MIMO
Multi Input Multi Output
MTBF
Mean Time Between Failures
MTTR
Mean Time To Recovery
OAM
Operating And Maintenance
OFDMA
Orthogonal Frequency Division Multiple Access
OPEX
Operation Expenditure
OSS
Operation Support Sub-system
PA
Power Amplifier
PWR
Power
QTR
Quad-channel Transceiver
RF
Radio Frequency
RRU
Remote Radio Unit
SC-FDMA
Single Carrier Frequency Division Multiple Access
ZXSDR R8862A Product Description
24 ZTE Confidential & Proprietary
Abbreviations
Full Name
SDR
Software Defined Radio
ToC
Top of Cabinet
UE
User Equipment
UL
Uplink
UTRAN
UMTS Terrestrial Radio Access Network
VSWR
Voltage Standing Wave Ratio