ZTE R8872AS1900 Macro Radio Remote Unit User Manual ZXSDR R8872A Product Description
ZTE Corporation Macro Radio Remote Unit ZXSDR R8872A Product Description
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| Document ID | 3335738 |
| Application ID | FiWhRvIq1FkUbT6ZUnJP5w== |
| Document Description | Users Manual |
| Short Term Confidential | No |
| Permanent Confidential | No |
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| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 55.87kB (698405 bits) |
| Date Submitted | 2017-03-28 00:00:00 |
| Date Available | 2017-09-24 00:00:00 |
| Creation Date | 2017-03-20 17:53:25 |
| Producing Software | Microsoft® Word 2016 |
| Document Lastmod | 2017-03-20 17:53:25 |
| Document Title | ZXSDR R8872A Product Description |
| Document Creator | Microsoft® Word 2016 |
| Document Author: | Windows 用户 |
ZXSDR R8872A Product Description UniRAN 16/GUL Multi-Mode ZXSDR R8872A Product Description ZXSDR R8872A Product Description Version V1.00 V1.10 Date 2017/01/26 2017/03/16 Author Yang Lisha Yu Yang Reviewer Notes 1. Update static receiver sensitivity 2. Update Reliability 3. Update power consumption 4. Update 256QAM in downlink 1. Update capacity 2. Update bandwidth © 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. ZTE Confidential & Proprietary ZXSDR R8872A Product Description TABLE OF CONTENTS 1.1 1.2 1.3 Overview ............................................................................................................ 4 Introduction .......................................................................................................... 4 Benefits................................................................................................................ 4 Application Scenarios .......................................................................................... 5 2.1 2.2 2.2.1 2.2.2 2.2.3 2.2.4 2.2.5 2.3 2.4 Product Architectures ....................................................................................... 6 Physical Appearance ........................................................................................... 6 Hardware Architecture ......................................................................................... 6 QTR ..................................................................................................................... 7 DFL ...................................................................................................................... 8 PA8 PWR .................................................................................................................... 9 PIB ....................................................................................................................... 9 Software Architecture ........................................................................................... 9 Functionality....................................................................................................... 10 3.1 3.2 3.2.1 3.2.2 3.2.3 3.2.4 3.2.5 3.3 3.3.1 3.3.2 3.4 3.5 3.6 3.7 3.8 Technical Specifications ................................................................................. 11 Physical Indices ................................................................................................. 11 Performance Indices .......................................................................................... 12 Operation Frequency Band ................................................................................ 12 Capacity ............................................................................................................. 12 ToC Output Power ............................................................................................. 13 Bandwidth .......................................................................................................... 13 Receiver Sensitivity............................................................................................ 14 Power Indices .................................................................................................... 14 Power Requirements ......................................................................................... 14 Power Consumption........................................................................................... 14 Interface Indices ................................................................................................ 15 Transmission ..................................................................................................... 17 Working Environment Indices............................................................................. 18 Electromagnetic Compatibility Indices ................................................................ 18 Reliability Indices ............................................................................................... 18 Glossary ........................................................................................................... 20 ZTE Confidential & Proprietary ZXSDR R8872A Product Description FIGURES Figure 1-1 Application Scenarios ........................................................................................ 5 Figure 2-1 Physical Appearance ......................................................................................... 6 Figure 2-2 System Structure ............................................................................................... 7 Figure 2-3 R8872A Software Architecture ..........................................................................10 Figure 3-1 Physical Appearance ........................................................................................11 Figure 3-2 External Interfaces at the Bottom ......................................................................15 Figure 3-3 External Interfaces on the Right Side ................................................................16 Figure 3-4 LED Indicators on the Panel .............................................................................17 TABLES Table 3-1 Physical Indices .................................................................................................12 Table 3-2 Operation Frequency Band ................................................................................12 Table 3-3 Capacity .............................................................................................................13 Table 3-4 ToC Output Power .............................................................................................13 Table 3-5 Static Receiver Sensitivity ..................................................................................14 Table 3-6 Power Supply .....................................................................................................14 Table 3-7 Power Consumption ...........................................................................................15 Table 3-8 Description of the External Interfaces at the Bottom ...........................................16 Table 3-9 Description of the External Interfaces on the Right Side.....................................17 Table 3-10 CPRI Interfaces................................................................................................18 Table 3-11 Environment Indices.........................................................................................18 Table 3-12 Electromagnetic Compatibility Indices ..............................................................18 Table 3-13 Reliability Characteristics .................................................................................19 ZTE Confidential & Proprietary ZXSDR R8872A Product Description Overview 1.1 Introduction This document provides a high level description of ZTE ZXSDR R8872A (hereinafter referred to as R8872A), which is the latest compact RRU (Remote Radio Unit) used in ZTE wireless communication solution. Based on ZTE common innovative SDR platform, R8872A can work in GSM, UMTS, or LTE single mode or multi-mode at the same frequency band. The volume of R8872A is 20L, and its weight is 23Kg. The document is designed to give an overview of the characteristics of R8872A, its key benefits, the architecture, functionality and services. The document also describes the system capabilities. 1.2 Benefits High performance R8872A has 2*80W of high TOC output power. With high output power, it supports large capacity which can be used in large site in dense urban with high traffic. R8872A is designed with wide bandwidth to meet with the growing demands for wide working bandwidth. E.g., R8872A supports 75MHz of IBW (instantaneous bandwidth) in band3 1800MHz frequency band. RRUs with full working bandwidth integrate more spectrum resources and help to decrease hardware investment exponentially. SDR 2T4R design to ensure one clear and simple network R8872A supports GSM, UMTS, LTE or mixed technologies. Design of 2T4R channels ensures the smooth evolution of the system from GSM/UMTS to LTE 2*2 MIMO. Instead of running hardware on independent platforms for each technology, operators can implement various wireless technologies through software configuration on the same hardware platform. It fully satisfies operators’ ZTE Confidential & Proprietary ZXSDR R8872A Product Description requirements of hybrid network deployment and long term evolution with lowest cost. Lower Total Cost of Ownership (TCO) ZXSDR R8872A’s PA adopts advanced efficiency enhancement technologies to realize high power efficiency, such as Doherty PA, DPD linear technology and MCPA technology. It also supports dynamic adaptive PA power supply due to the output power. Power consumption can be greatly decreased together with these features. 1.3 Application Scenarios R8872A as the Remote Radio Unit and Baseband Unit (BBU) comprise distributed macro base station BS8700. It can be used in dense urban area with high traffic. Typical application scenarios of R8872A are shown in the following figure: Figure 1-1 Application Scenarios ZTE Confidential & Proprietary ZXSDR R8872A Product Description Product Architectures 2.1 Physical Appearance The physical appearances of R8872A are shown in the following figure. Figure 2-1 2.2 Physical Appearance Hardware Architecture The hardware architecture of R8872A is shown in Figure 2-2. ZTE Confidential & Proprietary ZXSDR R8872A Product Description Figure 2-2 System Structure AISG/MON PIB 2 x PA QTR CPRI links PA Out CPRI 1 CPRI 2 PWR ALM R8872A PWR DC in DFL ANT1 ANT2 ANT3 GND ANT4 R8872A includes 5 main hardware modules: 2.2.1 Quad-channel Transceiver (QTR) Duplex Filters LNA (DFL) 2x Power Amplifier (PA) Power module (PWR) Protecting Interface Board (PIB) QTR The QTR has following functions: Process 4 received signals and 2 transmitted signals; Convert uplink and downlink radio signal; Multiplex downlink IQ signal and de-multiplex uplink signal; ZTE Confidential & Proprietary ZXSDR R8872A Product Description Amplify, filter and convert A/D and D/A signal; Convert between optical and electric signal; Capture reference clock signal from baseband unit and provide clock signal to other units; Measure and report voltage standing wave ratio (VSWR); Self-detect and report hardware failure alarm; Detect and report over-heat alarm; Provide communication interfaces, including, Two CPRI interfaces one DB15 port, for 2 dry contacts, one local debugging or AISG connection through different kind of cables 2.2.2 Reset function. DFL The DFL has following functions: 2.2.3 Combine and isolate transmitted and received signals; Filter the transmitted signal and received signal; Provide DFL alarm monitor function. PA The PA has following functions: Perform radio signal amplifying function; Implement temperature report function; Implement Low-Noise-Amplifier (LNA) function; ZTE Confidential & Proprietary ZXSDR R8872A Product Description Implement over-current, over-heat, over-power and over-standing wave protecting function. 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: Integrate lightning protection unit for DB15 interface, and the protection level is 20 KA. 2.3 Software Architecture The software architecture of R8872A can be divided into two layers, SDR Unified Platform Software and Application Software. The architecture is shown in the following figure: ZTE Confidential & Proprietary ZXSDR R8872A Product Description Figure 2-3 R8872A Software Architecture OAM Application Software OSS SDR Unified Platform Software Linux BSP Hardware 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 R8872A is the remote radio unit of distributed base station. The signal is transmitted/ received through R8872A 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. 10 ZTE Confidential & Proprietary ZXSDR R8872A Product Description The functions of R8872A include: Support LTE bandwidth defined in 3GPP Support 850/900/1800/1900 MHz frequency band Support 2T4R in one box which can optimize spectrum efficiency greatly and improve network uplink performance Support 256QAM modulation in LTE downlink and 64QAM in uplink Support transmit power report function for every carrier Support overload protection function for power amplifier Support transmit channel switching on/off function. Technical Specifications 3.1 Physical Indices R8872A is the multi-carrier RRU with two transmitters. The physical appearance is shown below. Figure 3-1 Physical Appearance ZTE Confidential & Proprietary 11 ZXSDR R8872A Product Description Table 3-1 Physical Indices Item Indices Size (H*W*D) (mm) 415*352*137 mm (20L) Weight (kg) 23 kg Color Silver gray 3.2 Performance Indices 3.2.1 Operation Frequency Band Table 3-2 Operation Frequency Band RRU Type Band Operation Radio Mode Frequency Band R8872A S8500 B5, 850 MHz Tx: 869 – 894 MHz GUL multi-mode Rx: 824 – 849 MHz R8872A S9000 B8, 900 MHz Tx: 934 – 960 MHz GL dual-mode Rx: 889 – 915 MHz R8872A S1800 B3, 1800 MHz TX: 1805 – 1880 MHz GL dual-mode RX: 1710 – 1785 MHz R8872A S1900 B2, 1900 MHz Tx: 1930 – 1990 MHz GUL multi-mode Rx: 1850 – 1910 MHz 3.2.2 12 Capacity ZTE Confidential & Proprietary ZXSDR R8872A Product Description Table 3-3 Capacity RRU Type System R8872A S8500 GSM single mode 2*4 TRXs R8872A S1900 UMTS single mode 2*2 CSs LTE single mode R8872A S9000 R8872A S1800 L 2*20M 2T2R Cells L 1*20M 2T2R Cell + L 1*15M 2T2R Cell GUL multi-mode G 2*2TRXs + U 2*1CSs + L 1*10M 2T2R Cell GSM single mode 2*6 TRXs LTE single mode 2*10MHz 2T2R/2T4R Cells GL dual-mode G 2*4TRXs+L 1*10MHz 2T2R/2T4R Cell, or G 2*2TRXs+L 2*10MHz 2T2R/2T4R Cells GSM single mode 2*6 TRXs LTE single mode 2*20MHz 2T2R/2T4R Cells GL dual-mode 3.2.3 RRU Capacity G 2*4TRXs+L 1*20MHz 2T2R/2T4R Cell, or G 2*2TRXs+L 2*20MHz 2T2R/2T4R Cells ToC Output Power Table 3-4 ToC Output Power TOC Output Power[1] RRU Type R8872A 2*80W Note: When “ZGO-04-01-011 Power Boost for 8PSK” is applied in GSM mode, the TOC output power achieves the same in 8PSK modulation as in GMSK. 3.2.4 Bandwidth R8872A supports all LTE bandwidth defined in 3GPP 15/20 MHz. The TOC here means the max capability of the hardware. The specific TOC output power is limited by the license. ZTE Confidential & Proprietary 13 ZXSDR R8872A Product Description 3.2.5 Receiver Sensitivity The receiver sensitivity of R8872A is shown as following table. Table 3-5 Mode Static Receiver Sensitivity Frequency Spectrum (MHz) Single Antenna Dual Antennas Four Antennas (dBm) (dBm) (dBm) GSM 850/900/1800/1900 -113.5 -116 UMTS 850/1900 -126.4 -129.1 LTE 900/1800 -106.4 -109.2 -112 850/1900 -106.4 -109.2 N/A 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 Power Supply Index DC: -48 V (-37 V – -60 V DC) R8872A supports integrated lightning protection module for DC power supply. Its protection level is 20 KA. 3.3.2 Power Consumption Power consumptions of R8872A at normal ambient temperature are shown in the table below: 14 ZTE Confidential & Proprietary ZXSDR R8872A Product Description Table 3-7 Power Consumption RRU Type Configuration R8872A S1800 Peak Power Consumption Consumption GSM S8*20W 275W 555W GSM S2*2*20W+LTE 2*40W 335W 555W GSM S8*20W 295W 575W LTE S2, 2*40W/LTE cell 315W 575W GSM S2*2*20W+LTE 2*40W 355W 575W R8872A S8500 LTE 2*80W 315W 600W R8872A S1900 LTE 2*80W 290W 550W R8872A S9000 3.4 Typical Power Interface Indices The external interfaces of the R8872A are located at the bottom and on the front side of the chassis. Figure 3-2 shows the external interfaces at the bottom of the R8872A chassis. Figure 3-2 External Interfaces at the Bottom For a description of the external interfaces at the bottom of the R8872A chassis, refer to the following table. ZTE Confidential & Proprietary 15 ZXSDR R8872A Product Description Table 3-8 No. Description of the External Interfaces at the Bottom Label AISG/MON Interface AISG equipment interface Interface Type/Connector DB15 connector MON external monitoring interface LMT O&M Ethernet interface GND Protective grounding interface 16 mm2 yellow-green round terminal ANT1 TX/RX antenna interface 50 Ω DIN-mode connector (TX/RX) ANT2 (RX) RX antenna interface 50 Ω DIN-mode connector ANT3 (RX) RX antenna interface 50 Ω DIN-mode connector ANT4 TX/RX antenna interface 50 Ω DIN-mode connector (TX/RX) Figure 3-3 shows the external interfaces on the right side of the R8872A chassis. Figure 3-3 External Interfaces on the Right Side For a description of the external interfaces on the right side of the R8872A chassis, refer to the following table. 16 ZTE Confidential & Proprietary ZXSDR R8872A Product Description Table 3-9 No. Description of the External Interfaces on the Right Side Label Interface Interface Type/Connector Interface for communication OPT1 between the RRU and a BBU, LC-type optical interface (IEC 874) or RRU cascading interface OPT2 RRU cascading interface PWR Power input interface Grounding cable interface for AC power supply LC-type optical interface (IEC 874) 2-pin customized connector Additionally, R8872A provides 6 LED indicators. The indicators on the R8872A panel indicate the operating status of the RRU. The indicators are located on the front side of the chassis, see Figure 3-4. Figure 3-4 3.5 LED Indicators on the Panel Transmission R8872A is connected to BBU through CPRI interfaces. For more information about CPRI interfaces, refer to the following table. ZTE Confidential & Proprietary 17 ZXSDR R8872A Product Description Table 3-10 CPRI Interfaces Item Value CPRI interface 3.6 Interface Type SFP (LC) Speed 6.144 Gbps [2] Standard CPRI V4.2 Working Environment Indices Table 3-11 Environment Indices Item Characteristics 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. 3.7 Electromagnetic Compatibility Indices Table 3-12 Electromagnetic Compatibility Indices Item Static Discharge Immunity Surge Impact Immunity 3.8 Characteristics Contact Discharge: ±6000V Air Discharge: ±8000V DC Power port Line(Ground): ±2000V Reliability Indices The speed here refers to the max capability of the hardware. The specific speed depends on the optical module configuration. 18 ZTE Confidential & Proprietary ZXSDR R8872A Product Description Table 3-13 Reliability Characteristics Item R8872A MTBF DC: ≥458,000 hours MTTR 1 hour Availability index DC: ≥99.999782% Down duration DC: ≤1.148 min/year ZTE Confidential & Proprietary 19 ZXSDR R8872A Product Description Glossary Abbreviations 20 Full Name BBU Base Band processing Unit BSP Board Support Package CPRI Common Public Radio Interface DL Downlink DFL Duplexer & Filters DPD Digital Pre-Distortion GSM Global System for Mobile communications 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 QTR Quad-channel Transceiver RF Radio Frequency RRU Remote Radio Unit SDR Software Defined Radio ToC Top of Cabinet UE User Equipment UL Uplink VSWR Voltage Standing Wave Ratio ZTE Confidential & Proprietary
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