ZXSDR A8602 Product Description (RRU Imacro) [PDF]

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ZXSDR A8602 Product Description UniRAN 16/UL Multi-Mode



ZXSDR A8602 Product Description



ZXSDR A8602 Product Description Version



Date



Author



V1.00



2017/01/26



Yang Lisha



V1.10



2017/05/11



Yang Lisha



Reviewer



Notes Update 256QAM in LTE downlink 1.



Introduce DC power supply



2.



Delete S1800 module



© 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.



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ZXSDR A8602 Product Description



TABLE OF CONTENTS



2



1 1.1 1.2 1.3



Overview ............................................................................................................ 4 Introduction .......................................................................................................... 4 Benefits................................................................................................................ 4 Application Scenarios .......................................................................................... 5



2 2.1 2.2 2.2.1 2.2.2 2.2.3 2.2.4 2.2.5 2.3 2.4



Product Architecture ......................................................................................... 5 Physical Appearance ........................................................................................... 5 Hardware Architecture ......................................................................................... 6 DTR & PA ............................................................................................................ 7 DFL ...................................................................................................................... 8 PWR .................................................................................................................... 8 OIB ...................................................................................................................... 8 Electrical Tilt Antenna .......................................................................................... 8 Software Architecture ........................................................................................... 8 Functionality......................................................................................................... 9



3 3.1 3.2 3.2.1 3.2.2 3.2.3 3.2.4 3.3 3.4 3.4.1 3.4.2 3.5 3.6 3.7 3.8 3.9



Technical Specifications ................................................................................. 10 Physical Specifications....................................................................................... 10 Performance Specifications ............................................................................... 10 Operation Frequency Band ................................................................................ 10 ToC Output Power ............................................................................................. 11 Capacity ............................................................................................................. 11 Static Receiving Sensitivity ................................................................................ 11 Antenna Specifications ...................................................................................... 12 Power Specifications.......................................................................................... 12 Power Requirements ......................................................................................... 12 Power Consumption........................................................................................... 13 Interface Specifications ...................................................................................... 13 Transmission ..................................................................................................... 14 Working Environment Specifications .................................................................. 14 Electromagnetic Compatibility Specifications ..................................................... 14 Reliability Specifications..................................................................................... 15



4



Glossary ........................................................................................................... 16



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ZXSDR A8602 Product Description



FIGURES Figure 2-1 Appearance ....................................................................................................... 6 Figure 2-2 System Structure ............................................................................................... 6 Figure 2-3 Software Architecture......................................................................................... 9



TABLES Table 3-1 Physical Specifications.......................................................................................10 Table 3-2 Operation Frequency Band ................................................................................11 Table 3-3 ToC Output Power .............................................................................................11 Table 3-4 Capacity .............................................................................................................11 Table 3-5 Receiver Sensitivity ............................................................................................12 Table 3-6 Antenna Specifications.......................................................................................12 Table 3-7 Power Supply .....................................................................................................12 Table 3-8 Power Consumption ...........................................................................................13 Table 3-9 Description of A8602 External Interfaces ...........................................................13 Table 3-10 CPRI Interfaces................................................................................................14 Table 3-11 Environment Specifications ..............................................................................14 Table 3-12 Electromagnetic Compatibility Specifications ...................................................14 Table 3-13 Reliability Characteristics .................................................................................15



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3



ZXSDR A8602 Product Description



1



Overview



1.1



Introduction ZTE ZXSDR A8602 (hereinafter A8602) is the latest released ultra broadband active antenna unit from ZTE. It consists of remote unit and electrical tilt antenna, supporting UMTS and LTE telecommunication systems. A8602 is superior in many aspects in active antenna solution, ultra wide-band technology and dynamic output power sharing function. Compared with traditional solution, the RF module is integrated into antenna by active antenna solution. In this way, the feeder loss is saved and the installation space is greatly reduced on the tower, on the pole or against the wall. The document is designed to give an overview of the characteristics of A8602 M1821, its key benefits, the architecture, functionality and services, as well as the system capabilities.



1.2



Benefits 



Integration of Antenna, Simplification of RAN Architecture A8602 is integrated with remote radio unit and electrical tilt antenna. With this design, the feeder connection between radio unit and antenna is removed and feeder loss is saved. The combination also saves the dwindling installation resources on the tower, on the pole or against the wall.







Ultra Broadband, High Integration, Less Modules A8602 M1821 supports ultra band of 365MHz, from 1805MHz to 2170MHz. When there are network construction or reconstruction requirements both in 1800MHz and 2100MHz, one A8602 replaces two traditional RRUs with one in 1800MHz and the other in 2100MHz. It greatly reduces module quantities and saves installation space.



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ZXSDR A8602 Product Description







Multi-Mode RRU, Smooth Evolution A8602 M1821 supports LTE in 1800MHz and UMTS and LTE in 2100MHz. In different phases during the evolution process towards LTE, Operators can find the most appropriate configuration of A8602 through software upgrade to suit the frequency spectrum holdings.







Slim and Light, Suitable for Macro Coverage in Streets At 17kg and 17L in slim columnar shape, A8602 requires less installation space. It is easy to be installed in the streets in the dense urban area. After the network coverage has been almost completed in dense area, the newly arisen issues should be considered to improve the user experience, such as capacity expansion and blind spot coverage in the streets between tall buildings. A8602 with 2*40W output power and small size, is the appropriate choice for operators in the scenarios mentioned above.



1.3



Application Scenarios A8602 and Baseband Unit (BBU) comprise the distributed macro base station BS8700.



2



Product Architecture



2.1



Physical Appearance The physical appearances of A8602 are shown in the following figure.



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ZXSDR A8602 Product Description



Figure 2-1



2.2



Appearance



Hardware Architecture The hardware architecture of A8602 is shown in Figure 2-2.



Figure 2-2



System Structure



A8602 ANT1



TX1 TX2



CPRI 1



OIB



CPRI 2



DTR & PA RX1 RX2



Antenna



DFL ANT2



PWR AISG



A8602 includes 5 main hardware modules.



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ZXSDR A8602 Product Description







Dual-channel Transceiver & Power Amplifier (DTR & PA)







Optical interface board (OIB)







Duplex Filter (DFL)







Power module (PWR)







Electrical Tilt Antenna



Functions of each module are specified below.



2.2.1



DTR & PA The DTR has following functions: 



Processing of 2 received signals and 2 transmitted signals;







Radio signal up/down conversion;







Downlink IQ signal multiplexing and uplink signal de-multiplexing;







Signal amplifying, filtering, A/D conversion and D/A conversion;







Conversion between optical and electric signal;







Capture of reference clock signal from baseband unit and distribution of clock signal to other units;







Voltage Standing Wave Ratio (VSWR) measurement and report;







Hardware failure self-detection and alarm;







Over-heat detection and alarm;







Provision of communication interfaces: 2 CPRI interfaces;







Reset function;







Radio signal amplifying function;



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ZXSDR A8602 Product Description



2.2.2







Temperature report function;







Over-current, over-heat, over-power and over-standing wave protection function.



DFL The DFL has following functions:



2.2.3







Combination and isolation of transmitted and received signals;







Filtering of the transmitted signal and received signal.



PWR The PWR has following functions: 



-48VDC or 220VAC power supply input;







Monitoring of input over-voltage/under-voltage, input power outage, output over-voltage/under-voltage, output over-current alarm, and reporting to DTR & PA board.



2.2.4



OIB Optical interface board provides two ways of optical-electrical conversion in the CPRI interface.



2.2.5



Electrical Tilt Antenna Transmission and reception of radio frequency signal.



2.3



Software Architecture The software architecture of A8602 can be divided into two layers: SDR Unified Platform Software and Application Software. The architecture is shown in the following figure.



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ZXSDR A8602 Product Description



Figure 2-3



Software Architecture



Application



OAM



Software



OSS



SDR Unified Platform



Linux



BSP



Hardware



Software



Hardware System



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 A8602 is the remote radio unit of distributed base station. The signal is transmitted /received through A8602 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.



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ZXSDR A8602 Product Description



A8602 supports the following functionalities: 



Supports 1800M&2100MHz of operation bands by M1821 module







Supports 2T2R in one box







Support 256QAM modulation in LTE downlink and 64QAM in uplink







Supports transmit power report function for every carrier







Supports overload protection function for power amplifier







Supports transmit channel switching on/off function







Supports no affection to the running of BBU and other RRUs that connected to it in case of failure



3



Technical Specifications



3.1



Physical Specifications Table 3-1



Physical Specifications Item



Specification



Size (H*W*D) (mm)



770*170*150 mm (17L)



Weight (kg)



17kg



Color



Silver gray



3.2



Performance Specifications



3.2.1



Operation Frequency Band



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ZXSDR A8602 Product Description



Table 3-2



Operation Frequency Band Type



Operation Radio Frequency Band



A8602 M1821



3.2.2



Uplink:1710 – 1785 MHz,



Downlink:1805 – 1880 MHz



Uplink:1920 – 1980 MHz,



Downlink:2110 – 2170 MHz



ToC Output Power Table 3-3



ToC Output Power Type



TOC Output Power



A8602 M1821



2*40W



Note: The TOC here means the max capability of the hardware. The specific TOC output power is limited by the license.



3.2.3



Capacity A8602 M1821 supports LTE in band 3 (1800MHz) and UMTS/LTE in band 1 (2100MHz) in the same time. It works in UMTS and LTE mode through software configuration. The maximum RRU configurations in different modes are listed below and capacities of cells in one row are supported simultaneously.



Table 3-4



Capacity



RRU



A8602 M1821



3.2.4



[email protected]



[email protected]



[email protected]



(2*2 MIMO cell)



(non-MIMO carrier)



(2*2 MIMO cell)



1



4



1



Static Receiving Sensitivity The static receiving sensitivity of A8602 is shown as following table.



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ZXSDR A8602 Product Description



Table 3-5



Receiver Sensitivity



Mode



Frequency Spectrum(MHz)



3.3



Single Antenna (dBm)



Dual Antennas (dBm)



UMTS



2100



-126.5



-129.2



LTE



1800/2100



-106.4



-109.2



Antenna Specifications Table 3-6



Antenna Specifications Antenna Index



Specification



Frequency Range (MHz)



1710~2170



Gain (dBi)



15



Polarization(°)



±45



Half - power Horizontal Beam width(°)



65±5



Half - power Vertical Beam width(°)



14±1



Electrical Tilt(°)



-2 - +12



Front to Back Ratio(dB)



≥25



Isolation (dB)



≥25



Impedance (Ω)



50



Lightning protection



Direct Ground



3.4



Power Specifications



3.4.1



Power Requirements The following table describes the power supply and the fluctuation range.



Table 3-7



Power Supply Item



Power Supply



12



Specification DC: -48V (-37V – -60V) AC: 220V (176V – 264V)



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ZXSDR A8602 Product Description



3.4.2



Power Consumption Power consumption of A8602 M1821 depends on its configuration. The value is given in the typical configuration.



Table 3-8



Power Consumption



Configuration



Typical PC (W)



1L(1.8GHz)+4U(2.1GHz), 2*20W/L,10W/U, total: 2*40W



3.5



Peak PC (W)



270 (DC)



370 (DC)



280 (AC)



380 (AC)



Interface Specifications A8602 provides four external interfaces, including power supply, grounding cable interface and two CPRI interfaces. The description of interface types and connectors is listed below.



Table 3-9 No.



Description of External Interfaces Label



Interface



Interface Type/Connector



Interface for communication 1



OPT1



between the RRU and a BBU,



LC-type optical interface (IEC 874)



or RRU cascading interface 2



OPT2



RRU cascading interface



3



PWR



Power input interface



4



Grounding cable interface



LC-type optical interface (IEC 874) DC power connector AC power connector -



Additionally, A8602 provides 4 LED indicators. The indicators on the A8602 panel indicate the operating status of the RRU.



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ZXSDR A8602 Product Description



3.6



Transmission A8602 is connected to BBU through CPRI interfaces. The following table lists more information about CPRI interfaces.



Table 3-10



CPRI Interfaces



Item



Value



CPRI interface



3.7



2



Interface Type SFP (LC)



Speed 10Gbps



[1]



Standard CPRI V5.0



Working Environment Specifications Table 3-11



Environment Specifications Item



Specification



Temperature



-40 to +55 °C



Relative Humidity



5% to 100%



Waterproof/Dustproof



IP65 ≤5 Ω; earth resistance can be less than 10 Ω in



Ground



thunder-less area where thunderstorm days is less than 20 per year.



3.8



Electromagnetic Compatibility Specifications Table 3-12



Electromagnetic Compatibility Specifications Item



Static Discharge Immunity



Specification Contact Discharge: ±6000V Air Discharge: ±8000V



1



The speed here refers to the max capability of the hardware. The specific speed depends on the optical module configuration.



14



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ZXSDR A8602 Product Description



3.9



Reliability Specifications Table 3-13



Reliability Characteristics Item



MTBF



Specification ≥300,000 hours (AC) ≥310,000 hours (DC)



MTTR



1 hour



Availability index



≥99.999667% (AC) ≥99.999677% (DC)



Down duration



≤1.752 min/year (AC) ≤1.695 min/year (DC)



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ZXSDR A8602 Product Description



4



Glossary Abbreviations



16



Full Characteristics



BBU



Base Band processing Unit



BSP



Board Support Package



CPRI



Common Public Radio Interface



DL



Downlink



DFL



Duplexer & Filters



DPD



Digital Pre-Distortion



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



OSS



Operation Support Sub-system



PA



Power Amplifier



PWR



Power



DTR



Dual-channel Transceiver



RF



Radio Frequency



RRU



Remote Radio Unit



SDR



Software Defined Radio



ToC



Top of Cabinet



UL



Uplink



VSWR



Voltage Standing Wave Ratio



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