ZXSDR R8881 Product Description UR13
ZXSDR R8881 Product Description ZXSDR R8881 Product Description Version V1.00 Date Author 2014-05-30 Yang Lisha Reviewer Notes Chen Yong, Yang First release, information of GSM, UMTS Xu 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.
ZXSDR R8881 Product Description TABLE OF CONTENTS 2 1 1.1 1.2 1.3 Overview ............................................................................................................ 5 Introduction .......................................................................................................... 5 Benefits................................................................................................................ 5 Application Scenarios .......................................................
ZXSDR R8881 Product Description ZTE Confidential & Proprietary 3
ZXSDR R8881 Product Description 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 .......................................................................
ZXSDR R8881 Product Description 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.
ZXSDR R8881 Product Description 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.
ZXSDR R8881 Product Description 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.
ZXSDR R8881 Product Description Code DFL Function 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.
ZXSDR R8881 Product Description 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.
ZXSDR R8881 Product Description 2.2.2 2.2.
ZXSDR R8881 Product Description 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: 2.2.5 Converts voltage for the system power supply Supports 110V/220V AC power supply Lightning Protection Module (PIB) 2.
ZXSDR R8881 Product Description Figure 2-2 R8881 External Interfaces 11 1 2 3 4 5 a b c a: Front view b: Side view c: Bottom view 10 9 8 7 6 The interfaces are described in the following table. Table 2-2 S.N.
ZXSDR R8881 Product Description BBU and RRU 6 OPT1 Interfaces/RRU LC-mode optical interface (IEC 874) cascading interface 7 OPT2 8 AISG 9 MON 10 PWR RRU cascading LC-mode optical interface (IEC 874) interface AISG equipment 8-pin circle connector (IEC interface 60130-9-ED) (female) External monitoring 8-pin circle connector (male) interface Power input interface DC: 2-pin round connector (pin) AC: 3-pin round connector (pin) 8P8C angle socket, PCB shielded 11 LMT O&M Ethernet interf
ZXSDR R8881 Product Description 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.
ZXSDR R8881 Product Description 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.
ZXSDR R8881 Product Description 3.2 Performance Indices 3.2.1 Operation Frequency Band Table 3-2 R8881 80W Operation Frequency Band Mode 3.2.2 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 Capacity Table 3-3 R8881 80W Capacity Mode GSM single mode 6 TRXs UMTS single mode 4 CSs G/U dual-mode 3.2.
ZXSDR R8881 Product Description 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 R8881 80W 3.3.
ZXSDR R8881 Product Description Table 3-9 R8881 80W Power Consumption in G/U Dual-Mode Power Consumption (W) Item Average 900MHz 4G1U/ 205 TOC 15W/TRX+20W/Carrier 3.4 Peak 305 Transmission R8881 is connected to BBU through CPRI interfaces. Table 3-10 R8881 CPRI Interfaces Item CPRI interface 3.5 Value 2 Interface Type SFP (LC) Speed 1.
ZXSDR R8881 Product Description 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 MTBF MTTR Availability index Down duration 4 Index DC: ≥554,000 hours AC: ≥540,000 hours 1 hour DC: ≥99.999819% AC: ≥99.999815% DC: ≤0.949 min/year AC: ≤0.973 min/year Installation R8881 is easy to be deployed.
ZXSDR R8881 Product Description 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.
ZXSDR R8881 Product Description 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.
ZXSDR R8881 Product Description 22 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 ZTE Confidential & Proprietary
