ZTE R8881S8500 Macro Radio Remote Unit User Manual ZXSDR R8881 Product Description

ZTE Corporation Macro Radio Remote Unit ZXSDR R8881 Product Description

User manual

ZXSDR R8881 Product Description UR13
ZXSDR R8881 Product Description ZTE Confidential & Proprietary 1 ZXSDR R8881 Product Description Version Date Author Reviewer Notes V1.00 2014-05-30 Yang Lisha Chen Yong, Yang Xu First release, information of GSM, UMTS dual-mode are all included © 2015 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 R8881 Product Description 2 ZTE Confidential & Proprietary TABLE OF CONTENTS 1 Overview ............................................................................................................ 5 1.1 Introduction .......................................................................................................... 5 1.2 Benefits ................................................................................................................ 5 1.3 Application Scenarios .......................................................................................... 6 2 Product Architecture ......................................................................................... 7 2.1 Physical Structure ................................................................................................ 7 2.2 Hardware Structure .............................................................................................. 7 2.2.1 Transceiver (RTR) ............................................................................................... 8 2.2.2 Power Amplifier (PA) .......................................................................................... 10 2.2.3 Duplexer (DFL) .................................................................................................. 10 2.2.4 Power Supply (PWR) ......................................................................................... 11 2.2.5 Lightning Protection Module (PIB) ...................................................................... 11 2.3 External Interfaces ............................................................................................. 11 2.4 Software Architecture ......................................................................................... 13 2.5 Functionality ....................................................................................................... 14 3 Technical Specifications ................................................................................. 15 3.1 Physical Indices ................................................................................................. 15 3.2 Performance Indices .......................................................................................... 16 3.2.1 Operation Frequency Band ................................................................................ 16 3.2.2 Capacity ............................................................................................................. 16 3.2.3 Receiver Sensitivity ............................................................................................ 16 3.2.4 TOC Output Power ............................................................................................ 17 3.3 Power Indices .................................................................................................... 17 3.3.1 Power Supply ..................................................................................................... 17 3.3.2 Power Consumption ........................................................................................... 17 3.4 Transmission ..................................................................................................... 18 3.5 Working Environment ......................................................................................... 18 3.6 Electromagnetic Compatibility ............................................................................ 18 3.7 Reliability ........................................................................................................... 19 4 Installation ....................................................................................................... 19 5 Configurations ................................................................................................. 20 6 Warning and Note ............................................................................................ 20 7 Abbreviation .................................................................................................... 21
ZXSDR R8881 Product Description ZTE Confidential & Proprietary 3
ZXSDR R8881 Product Description 4 ZTE Confidential & Proprietary FIGURES Figure 1-1 R8881 Physical Structure .................................................................................. 5 Figure 2-1 R8881 System Structure .................................................................................... 7 Figure 2-2 R8881 External Interfaces ................................................................................12 Figure 2-3 SDR BTS Software Structure ............................................................................13 TABLES Table 2-1 R8881 Modules ................................................................................................... 7 Table 2-2 R8881 External Interfaces Description ...............................................................12 Table 3-1 R8881 80W Physical Indices..............................................................................15 Table 3-2 R8881 80W Operation Frequency Band ............................................................16 Table 3-3 R8881 80W Capacity .........................................................................................16 Table 3-4 R8881 Static Receiver Sensitivity ......................................................................16 Table 3-5 R8881 TOC Output Power .................................................................................17 Table 3-6 R8881 Power Supply .........................................................................................17 Table 3-7 R8881 80W Power Consumption in UMTS Single Mode ....................................17 Table 3-8 R8881 80W Power Consumption in GSM Single Mode ......................................17 Table 3-9 R8881 80W Power Consumption in G/U Dual-Mode ..........................................18 Table 3-10 R8881 CPRI Interfaces ....................................................................................18 Table 3-11 R8881 Environment Condition Compatibility ....................................................18 Table 3-12 R8881 Reliability Characteristics ......................................................................19
ZXSDR R8881 Product Description ZTE Confidential & Proprietary 5 1 Overview 1.1 Introduction With the multi-mode era coming, ZTE, who is dedicated to providing comprehensive network solutions and delivering the future-oriented quality network for the operators, developed the ground breaking SDR unified platform with the essential feature to support multi-mode and multi-band radio access. Based on this innovative SDR platform, ZTE promotes a series of products to satisfy different scenario requirements, including the indoor macro, outdoor macro, distributed, outdoor micro, mini and pico base station. In this document, R8881 is introduced. ZTE ZXSDR R8881 (hereinafter referred to as R8881) is a distributed Remote Radio Unit (RRU) used in ZTE Uni-RAN solution, with 1-way transmitting and 2-way receiving. R8881 80W works in GSM or UMTS single mode or multi-mode. Figure 1-1 R8881 Physical Structure 1.2 Benefits R8881 is one of the most widely used remote radio units in ZTE SDR base station series. The following part lists the key benefits for operators.  High performance
ZXSDR R8881 Product Description 6 ZTE Confidential & Proprietary To meet with the growing demands for wide working bandwidth, R8881 modules with full working bandwidth are released. Maximum working bandwidth of R8881 is 75MHz for 1800M band and 35MHz for 900M band. For frequency spectrums become scarce, resources allocated for operators tend to be characterized with fragmentation and large span. RRUs with full working bandwidth integrate more spectrum resources and help to decrease hardware investment exponentially. (This is the maximum bandwidth of the RF modules. Please make the actual module as the standard.)  Clearer and simpler network R8881 supports GSM, UMTS, or mixed technologies. Instead of running hardware on independent platforms for each technology, operators can implement various wireless technologies in software on the same hardware platform. Since hardware platforms can be reused, there is significantly less investment risk for deploying hardware. Wireless technologies are developing so fast, and investing on one technology may bring risks to operators. SDR-based solutions will decrease the investment risk since SDR platform can support various technologies.  High PA Efficiency, Low Power Consumption The PA of R8881 achieves high efficiency with ZTE patent Doherty, Digital Pre-Distortion (DPD) and Dynamic Power Trace (D-PT) technologies. The PA power supply voltage is dynamically adapted to the output power, reducing RU’s power consumption. 1.3 Application Scenarios The R8881s and one base band unit (BBU) form a complete BTS/NodeB. It implements radio transmission in the covered area, controls radio channels and communicates with the Base Station Controller (BSC/RNC). It supports indoor and outdoor applications.
ZXSDR R8881 Product Description ZTE Confidential & Proprietary 7 2 Product Architecture 2.1 Physical Structure R8881 is the SDR based multi-carrier remote RF unit (RRU). It has one transmitter. R8881 80W is 370mm*320mm*170mm (H*W*D) in dimension and 18 kg in weight. 2.2 Hardware Structure R8881 consists of transceiver (RTR), power amplifier (PA), duplexer (DFL), power (PWR) and lightning protection module (PIB), as introduced below. The hardware structure of R8881 is shown below. Figure 2-1 R8881 System Structure Table 2-1 R8881 Modules Code Function RTR Receives and transmits the signals of panel interfaces, digital intermediate frequency and RF, and controls clock, power and power amplification. PA Amplifies downlink RF signals and outputs them to the duplexer. PWRAC/DC in Rx in Rx out ANT1 ANT2AISGRS485/LMTDry ContactDFLOPT1OPT2PIB RTR PAR8881
ZXSDR R8881 Product Description 8 ZTE Confidential & Proprietary Code Function DFL Consists of a duplexer, filter and their own low-noise amplifier subsystems. It can receive diversities. PWR Provides EMC protection for the power interface, monitoring interface, and the AISG interface. PIB Provides lightning protection for the AISG, RS485 and dry contacts 2.2.1 Transceiver (RTR)  Optical interface processing function  Supports RRU cascading.  Exchanges IQ data with the baseband resource pool.  Implements message interaction such as management, maintenance and signaling.  Clock processing function  Recovers clock for data on the optical interface to generate reference clock source.  Generates work clock based on the local reference clock of high-stability clock phase locked.  Downlink processing function  Format conversion for downlink output IQ data  Downlink power calibration  Downlink peak clipping  Pre-distortion processing for downlink digits  Downlink single transfer channel  TCPW detection
ZXSDR R8881 Product Description ZTE Confidential & Proprietary 9  Uplink processing function  Format conversion for uplink output IQ data  Uplink power calibration  RCPW detection function  RF hopping function  Rate adaptation modulation function  Monitoring function  PA Forward power detection — when the forward power exceeds the power alarm threshold, the TRM reports an alarm and controls PA output by the signal of enabling PA output shutoff.  PA reverse power (SWR) detection — when the reverse power exceeds the SWR alarm threshold, the TRM reports an alarm and controls PA output by the signal of enabling PA output shutoff.  PA temperature detection — when the temperature exceeds the over-temperature alarm threshold, the TRM reports an alarm and controls PA output by the signal of enabling PA output shutoff.  Enabling PA output shutoff  Transmit output power detection function  Power input under-voltage alarm detection and report  Power output under-voltage alarm detection and report  System environment supervision function  TCPW message report function  RCPW message report function  PLL unlocked alarm function
ZXSDR R8881 Product Description 10 ZTE Confidential & Proprietary  CPRI self-detection alarm function  Hardware configuration information for all RRU modules  Indicator function  Interfaces connecting with external equipment  Two CPRIs  Four input dry contacts  One RS485 serial port, communicating with external monitoring equipment  One network port for local debugging  One AISG electrically–tuned antenna interface  Two interfaces for combining cabinets 2.2.2 Power Amplifier (PA)  Amplifies downlink RF signals and outputs them to the duplexer.  Provides a pre-distortion feedback interface for the RTR.  Provides an SWR detection interface for the RTR.  Provides a read-write interface for module asset management.  Provides individual switch-off control.  Detects the module internal temperature. 2.2.3 Duplexer (DFL)  Lightning protection  Receives diversities  Expands ports for frequency points
ZXSDR R8881 Product Description ZTE Confidential & Proprietary 11 2.2.4 Power Supply (PWR) DC power supply:  Converts voltage for the system power supply  Provides the lightning protection for -48 V power supply  Provides -48 V power filter AC power supply:  Converts voltage for the system power supply  Supports 110V/220V AC power supply 2.2.5 Lightning Protection Module (PIB)  Provides lightning protection for the AISG, RS485 and dry contacts 2.3 External Interfaces R8881’s external interfaces are located at the bottom and side, as shown in the following figure.
ZXSDR R8881 Product Description 12 ZTE Confidential & Proprietary Figure 2-2 R8881 External Interfaces The interfaces are described in the following table. Table 2-2 R8881 External Interfaces Description S.N. Label Interface Interface Type/Connector 1 RXin Combined cabinet interface N-mode connector 2 RXout Combined cabinet interface N-mode connector 3 GND Protection ground interface 16 mm2 yellow/green round terminal 4 ANT1 (TX/RX) Transmit/receive antenna feeder interface 50Ω DIN-mode Connector 5 ANT2 (RX) Receive antenna feeder interface 50Ω DIN-mode Connector 1 2 3 4 510 9 8 7 6a bca: Front viewb: Side view c: Bottom view11
ZXSDR R8881 Product Description ZTE Confidential & Proprietary 13 6 OPT1 BBU and RRU Interfaces/RRU cascading interface LC-mode optical interface (IEC 874) 7 OPT2 RRU cascading interface LC-mode optical interface (IEC 874) 8 AISG AISG equipment interface 8-pin circle connector (IEC 60130-9-ED) (female) 9 MON External monitoring interface 8-pin circle connector (male) 10 PWR Power input interface DC: 2-pin round connector (pin) AC: 3-pin round connector (pin) 11 LMT O&M Ethernet interface 8P8C angle socket, PCB shielded welding, LED phone (LED indicators: yellow for left indicator and green for right indicator) 2.4 Software Architecture The software system of R8881 can be divided into operating support layer and application layer. Figure 2-3 SDR BTS Software Structure GSM/UMTS Functions NOP OMC-B SCS OAM DBS BRACS BRS Hardware (BSP) Linux LMT OSS
ZXSDR R8881 Product Description 14 ZTE Confidential & Proprietary The operating support layer provides the functions of OSS, while OAM, DBS, BRS, BRACS and SCS serve different BTS modes.  Operating and Maintenance (OAM) provides the configuration, alarm and performance measurement function.  Database Sub-system (DBS) is the database system.  Bearer Sub-system (BRS) processes the protocol stack.  Bearer Access Control Sub-system (BRACS) controls the access to bear layer.  System Control Sub-system (SCS) controls the power supplying and active/standby switching. Operation Support Sub-system (OSS) is the support layer in this entire framework, which is a hardware platform for running software and provides basic functions like scheduling, timer, memory management, communication, sequencing control, monitoring, alarming and logging. Board Support Package (BSP) is the software closely connected with the board hardware and supports Real Time Operation Support Sub-system (RT OSS) to work on the board. 2.5 Functionality R8881 supports functionalities as follows.  Supports multi-band of 850M/900M/1800M/1900M/2100MHz/AWS.  Supports the configuration of 5MHz/4.8MHz/4.6MHz/4.4MHz/4.2MHz channel interval for UMTS carrier.  Supports the configuration of 1.4MHZ/3MHz5MHz/10MHz/15MHz/20MHz scalable bandwidth.  Supports one way transmitting and two-way receiving.
ZXSDR R8881 Product Description ZTE Confidential & Proprietary 15  R8881 80W supports GSM, UMTS single mode or GSM/UMTS dual-mode.  Supports combination of two R8881 units to achieve same receiving sensitivity without adding antenna.  Supports RTWP report interval at 100ms and 2ms.  Supports transmit power reporting function for every carrier.  Supports over loading protection function for power amplifier.  Supports measurement, compensation and adjustment function for channel delay.  Supports dynamic PA voltage adjustment to achieve best efficiency in different system loads.  Supports transmitting channel switching on/off function.  Supports built-in lightning protection function for DC power supply. 3 Technical Specifications 3.1 Physical Indices R8881 employs the compact design, whose physical indices are listed below. Table 3-1 R8881 80W Physical Indices Item Index Dimension (H*W*D) 370 mm * 320 mm * 170 mm Weight 18 Kg Color Silver gray
ZXSDR R8881 Product Description 16 ZTE Confidential & Proprietary 3.2 Performance Indices 3.2.1 Operation Frequency Band Table 3-2 R8881 80W Operation Frequency Band Mode RRU Frequency Spectrum (MHz) GSM single mode 850/900/1800/1900 UMTS single mode 850/900/1900/2100 G/U dual-mode 850/900/1900 3.2.2 Capacity Table 3-3 R8881 80W Capacity Mode Capacity GSM single mode 6 TRXs UMTS single mode 4 CSs G/U dual-mode 4 GSM TRXs + 1 UMTS carriers, or 2 GSM TRXs + 2 UMTS carriers 3.2.3 Receiver Sensitivity The receiver sensitivity of R8881 is shown as following table: Table 3-4 R8881 Static Receiver Sensitivity Mode Frequency Spectrum(MHz) Single Antenna (dBm) Dual Antennas (dBm) Four Antennas (dBm) GSM 900/1800 -113.5 -115.5 N/A UMTS 2100 -126.5 -129.2 N/A 900 -126.4 -129.1 N/A
ZXSDR R8881 Product Description ZTE Confidential & Proprietary 17 3.2.4 TOC Output Power Table 3-5 R8881 TOC Output Power Mode TOC Output Power R8881 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. 3.3 Power Indices 3.3.1 Power Supply Table 3-6 R8881 Power Supply RRU Type Index R8881 80W DC: -48 V (-37 V – -60 V DC) AC: 220 V / 110 V (90 V – 290 V AC) 3.3.2 Power Consumption Table 3-7 R8881 80W Power Consumption in UMTS Single Mode Item Power Consumption (W) Average Peak 2C/TOC 40W (900MHz) 130 175 2C/TOC 40W (2100MHz) 125 180 Table 3-8 R8881 80W Power Consumption in GSM Single Mode Item Power Consumption (W) Average Peak 900MHz S6/TOC 80W 185 305 1800MHz S6/TOC 80W 190 310
ZXSDR R8881 Product Description 18 ZTE Confidential & Proprietary Table 3-9 R8881 80W Power Consumption in G/U Dual-Mode Item Power Consumption (W) Average Peak 900MHz 4G1U/ TOC 15W/TRX+20W/Carrier 205 305 3.4 Transmission R8881 is connected to BBU through CPRI interfaces. Table 3-10 R8881 CPRI Interfaces Item Value Interface Type Speed CPRI interface 2 SFP (LC) 1.25Gbps 3.5 Working Environment Table 3-11 R8881 Environment Condition Compatibility Item Index Temperature -40 – +55 °C Relative humidity 5% – 95% Waterproof/dustproof IP65 Ground ≤5 Ω; earth resistance can be less than 10 Ω in thunder-less area where there less than 20 thunderstorm days per year. Storage Indoor pack deposited Temperature: -40 °C – 70 °C Relative Humidity: 5% – 100% 3.6 Electromagnetic Compatibility YD/T 1595.2-2007
ZXSDR R8881 Product Description ZTE Confidential & Proprietary 19 ETSI EN 301 489-01, ETSI EN 301 489-23 ETSI EN 300 386–V1.3.2 (CISPR22) Class B Directive 1999/5/EC (R&TTE) 3.7 Reliability Table 3-12 R8881 Reliability Characteristics Item Index MTBF DC: ≥554,000 hours AC: ≥540,000 hours MTTR 1 hour Availability index DC: ≥99.999819% AC: ≥99.999815% Down duration DC: ≤0.949 min/year AC: ≤0.973 min/year 4 Installation R8881 is easy to be deployed.  It is portable to transport and flexible to install on the pole, tower and against wall.  Only fibers, power cables, RF cable antennas and AISG cables need to be connected.  It suits any weather condition with water resistance and dust proof case, which reaches IP65.
ZXSDR R8881 Product Description 20 ZTE Confidential & Proprietary 5 Configurations R8881 80W can be configured in GSM single mode, UMTS single mode or GSM/UMTS dual-mod through software. One R8881 supports one cell and three R8881 modules form one three-sector site. 6 Warning and Note Warning: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radiofrequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:  Reorient or relocate the receiving antenna.  Increase the separation between the equipment and receiver.  Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.  Consult the dealer or an experienced radio/TV technician for help. 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. FCC Radiation Exposure Statement:
ZXSDR R8881 Product Description ZTE Confidential & Proprietary 21 This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 10m between the radiator & your body. 7 Abbreviation Abbreviation Full Name 3GPP 3rd Generation Partnership Project BBU Base Band processing Unit BRACS Barrier Access Control Sub-system BRS Barrier Sub-system BSP Board Support Package CAPEX Capital Expenditure CPRI Common Public Radio Interface DBS Data Base Sub-system DL Downlink DSP Digital Signal Processing/Processor DTX Discontinuous transmission GSM Global System for Mobile communications HSPA High Speed Packet Access LMT Local Maintenance Terminal MIMO Multi Input Multi Output MTBF Mean Time Between Failures MTTR Mean Time To Recovery OAM Operating And Maintenance OPEX Operation Expenditure OSS Operation Support Sub-system PLL Phase Locked Loop RCPW Received Carrier Power
ZXSDR R8881 Product Description 22 ZTE Confidential & Proprietary RF Radio Frequency RRU Remote Radio Unit RTWP Received Total Wideband Power SCS System Control Sub-system SDR Software Defined Radio TCPW Transmitted Carrier Power UE User Equipment UMTS Universal Mobile Telecommunications System UTRAN UMTS Terrestrial Radio Access Network

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