zxsdr r8852e product description -...
Post on 19-Oct-2020
18 Views
Preview:
TRANSCRIPT
ZXSDR R8852E Product Description
ZXSDR R8852E Product Description
ZTE Confidential & Proprietary 1
ZXSDR R8852E Product Description
© 2018 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 R8852E Product Description
2 ZTE Confidential & Proprietary
TABLE OF CONTENTS
1 Overview ......................................................................................................... 4
1.1 Introduction ....................................................................................................... 4
1.2 Benefits ............................................................................................................. 4
1.3 Application Scenarios ....................................................................................... 6
2 Product Architectures .................................................................................... 7
2.1 Hardware Architecture ...................................................................................... 7
2.1.1 TRX .................................................................................................................. 7
2.1.2 DFL ................................................................................................................... 8
2.1.3 PA 8
2.1.4 Power ............................................................................................................... 9
2.2 Functionality ...................................................................................................... 9
3 Technical Specifications .............................................................................. 10
3.1 Physical Specifications.................................................................................... 10
3.2 Performance Specifications ............................................................................ 10
3.2.1 Operation Frequency Band ............................................................................. 10
3.2.2 Capacity .......................................................................................................... 11
3.2.3 ToC Output Power .......................................................................................... 11
3.2.4 Bandwidth ....................................................................................................... 12
3.2.5 Receiver Sensitivity ......................................................................................... 12
3.3 Power Specifications ....................................................................................... 12
3.3.1 Power Requirements ...................................................................................... 12
3.3.2 Power Consumption ........................................................................................ 13
3.4 Interface Specifications ................................................................................... 13
3.5 Transmission .................................................................................................. 15
3.6 Working Environment Specifications ............................................................... 15
3.7 Electromagnetic Compatibility Specifications .................................................. 15
3.8 Reliability Specifications .................................................................................. 16
4 Glossary ........................................................................................................ 17
ZXSDR R8852E Product Description
ZTE Confidential & Proprietary 3
FIGURES
Figure 1-1 Physical Appearance ......................................................................................... 4
Figure 1-2 Deployment Scenarios ....................................................................................... 6
Figure 2-1 System Structure ............................................................................................... 7
Figure 3-1 External Interfaces at the Bottom and Side .......................................................13
TABLES
Table 3-1 Physical Specifications.......................................................................................10
Table 3-2 Operation Frequency Band ................................................................................10
Table 3-3 Capacity .............................................................................................................11
Table 3-4 ToC Output Power .............................................................................................11
Table 3-5 LTE Cell Bandwidth ...........................................................................................12
Table 3-6 Static Receiver Sensitivity ..................................................................................12
Table 3-7 Power Supply .....................................................................................................12
Table 3-8 Power Consumption ...........................................................................................13
Table 3-9 Description of the External Interfaces at the Bottom ...........................................14
Table 3-10 Description of the External Interfaces on the Right Side ...................................14
Table 3-11 CPRI Interfaces ................................................................................................15
Table 3-12 Environment Specifications ..............................................................................15
Table 3-13 Electromagnetic Compatibility Specifications ...................................................16
Table 3-14 Reliability Characteristics .................................................................................16
ZXSDR R8852E Product Description
4 ZTE Confidential & Proprietary
1 Overview
1.1 Introduction
This document provides a high level description of ZTE ZXSDR R8852E (hereinafter
referred to as R8852E), which is the latest compact RRU (Remote Radio Unit) used in
ZTE wireless communication solution. Based on ZTE common innovative SDR platform,
R8852E can work in GSM, or LTE single mode or dual-mode ,and also can work in
GSM/LTE multi-mode in different frequency band. The volume of R8852E is 12 L, and its
weight is 16 kg.
R8852E features as small volume, high integration, wide working bandwidth and high
output power.
The document is designed to give an overview of the characteristics of R8852E. Three
types are introduced in this document, 1800 MHz ,2100 MHz and 900MHz, with its key
benefits, the architecture, functionality and services. The document also describes the
system capabilities.
Figure 1-1 Physical Appearance
NOTE: In this document, G is short for GSM, U is short for UMTS, L is short for FDD
LTE.
ZXSDR R8852E Product Description
ZTE Confidential & Proprietary 5
1.2 Benefits
Smallest Size, High Integration
R8852E, with 2 * 80W rack top output power, has the smallest size in the industry.
With improvement in material and design, R8852E has smaller size than previous
product, saving 30% in weight and 40% in volume. It provides convenience in
transportation, installation and maintenance. It has lower load bearing requirements
for tower or poles to be installed on. This saves CAPEX for operators.
Full working bandwidth, High output power, High performance
R8852E has 2*80W of high TOC output power. It enables operators to deploy sites
with large capacity & high output power for each cell, helps to absorb more traffic
and provide better signal for subscribers.
As 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.
SDR 2T4R design to ensure one clear and simple network
R8852E supports GSM, UMTS and LTE multiple technologies or supports GSM/LTE
multiple technologies. Design of R8852E 2T4R channels ensures the smooth
evolution of the system from GSM to LTE 2*4 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’ requirements of hybrid network deployment and long term
evolution with lowest cost.
Lower Total Cost of Ownership (TCO)
ZXSDR R8852E’s PA adopts advanced efficiency enhancement technologies to
realize high power efficiency, such as Doherty PA, DPD linear technology and MCPA
ZXSDR R8852E Product Description
6 ZTE Confidential & Proprietary
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
R8852E as the Remote Radio Unit and Baseband Unit (BBU) comprise distributed macro
base station BS8700. R8852E is suitable for high traffic area. Typical deployment
scenarios of R8852E are shown in the following figure:
Figure 1-2 Deployment Scenarios
B8200 Accommodation
RRU Installation
BS8700
R8852E
ZXSDR R8852E Product Description
ZTE Confidential & Proprietary 7
2 Product Architectures
2.1 Hardware Architecture
The hardware architecture of R8852E is shown in Figure 2-1.
Figure 2-1 System Structure
R8852E includes 4 main hardware modules:
Transceiver (TRX)
Duplex Filters (DFL)
Power Amplifier (PA)
Power module (POWER)
2.1.1 TRX
The TRX has following functions.
Provides 4 receiving signals and 2 transmitting signals;
POWER
PA_CTRL
FWD/REV
TX1_IN
TX2_IN
FWD/REV
PA_PWR1/PA_PWR2
TX1_OUT
TX2_OUT
PATX1
TX2
LED
MON
DBG
AISG
OPT1
OPT2
POWER
GND
CONTROL
ANT1(TX1/RX1)
ANT2(RX2)
ANT3(RX3)
ANT4(TX4/RX4)
R8852E
TRXDFL
ZXSDR R8852E Product Description
8 ZTE Confidential & Proprietary
Converts uplink/downlink radio signal;
Multiplexes downlink IQ signal and de-multiplexes uplink IQ signal;
Amplifies and filters signals and implements A/D & D/A conversion;
Implements low noise amplifier (LNA) function;
Converts optical and electric signal;
Captures reference clock signal from baseband unit and provides clock signal to
other units;
Measures and reports voltage standing wave ratio (VSWR);
Implements hardware failure self-detection and alarm;
Detects and alarms over-heat situation;
Implements low noise amplifier function;
Provides communication interfaces of 2 CPRI interfaces, 1 DB15 interface for dry
contacts of external monitor equipment communication or AISG connection through
different kind of cables;
Implements reset function.
2.1.2 DFL
The DFL has following functions.
Combines and isolates transmitted and received signals;
Filters the transmitted signal and received signal;
Monitors DFL alarm.
2.1.3 PA
The PA has following functions.
ZXSDR R8852E Product Description
ZTE Confidential & Proprietary 9
Performs radio signal amplifying function;
Reports temperature information;
Implements over-heat, over-power and over-standing wave protecting function.
2.1.4 Power
The POWER has following functions.
Provides power supply function;
Monitors input over-voltage/under-voltage, input power outage, output over-voltage/
under-voltage, output over-current alarm, and reports these situations to QTR board.
2.2 Functionality
R8852E is the remote radio unit of distributed base station. The signal is transmitted/
received through R8852E 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 R8852E include:
Supports 900,1800 ,2100 MHz frequency bands;
Supports LTE configuration of 1.4/3/5/10/15/20 MHz scalable bandwidth in 1800
MHz and 5/10/15/20 MHz in 2100 MHz;
Supports 2T4R in one box which can optimize spectrum efficiency greatly and
improve network uplink performance;
Supports 256QAM modulation in LTE downlink and 64QAM in uplink;
Supports transmit power report function for every carrier;
Supports overload protection function for power amplifier;
ZXSDR R8852E Product Description
10 ZTE Confidential & Proprietary
Supports transmit channel switching on/off function;
Supports non-interruptible services in adjacent modules in case of one R8852E
software failure.
3 Technical Specifications
3.1 Physical Specifications
R8852E is the multi-carrier RRU with two transmitters. The physical Specifications are
listed below.
Table 3-1 Physical Specifications
Item Specifications
Size (H*W*D) (mm) 415× 296 × 104
Weight (kg) 16
Color Silver gray
3.2 Performance Specifications
3.2.1 Operation Frequency Band
Table 3-2 Operation Frequency Band
RRU Type Operation Frequency Band
R8852E S1800
B3, 1800 MHz
Rx: 1710 – 1785 MHz
Tx: 1805 – 1880 MHz
R8852E S2100
B1, 2100 MHz
Rx: 1920 – 1980 MHz
Tx: 2110 – 2170 MHz
R8852E S9000 B8,800MHz
ZXSDR R8852E Product Description
ZTE Confidential & Proprietary 11
RRU Type Operation Frequency Band
Rx:880~915MHz
Tx: 925~960MHz
3.2.2 Capacity
Table 3-3 Capacity
Band System RRU Capacity
R8852E
S1800
LTE single mode 2 2T4R cells
GL dual-mode 8 GSM TRXs + 1 LTE 2T4R cell, or
4 GSM TRXs + 2 LTE 2T4R cell
R8852E
S2100
LTE single mode 2 2T4R cells
UL dual-mode 2 LTE 2T4R cells + 4 UMTS carriers non-MIMO
R8852E
S9000
LTE single mode 2 LTE 10MHz 2T4R Cells
GL dual-mode 8 GSM TRXs + 1 LTE 10MHz 2T4R Cell, or
4 GSM TRXs + 2 LTE 10MHz 2T4R Cell
3.2.3 ToC Output Power
Table 3-4 ToC Output Power
RRU Type TOC Output Power[1]
R8852E 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.
1 The TOC here means the max capability of the hardware. The specific TOC output power is limited by the license.
ZXSDR R8852E Product Description
12 ZTE Confidential & Proprietary
3.2.4 Bandwidth
R8852E supports all LTE cell bandwidth defined in 3GPP.
Table 3-5 LTE Cell Bandwidth
RRU Type LTE Bandwidth
R8852E S1800 1.4, 3, 5, 10, 15 & 20 MHz
R8852E S2100 5, 10, 15 & 20 MHz
3.2.5 Receiver Sensitivity
The receiver sensitivity of R8852E is shown as following table:
Table 3-6 Static Receiver Sensitivity
Mode Frequency
Spectrum (MHz)
Single Antenna
(dBm)
Dual Antennas
(dBm)
Four Antennas
(dBm)
GSM 1800 -113.5 -116 N/A
UMTS 2100 -126.5 -129.2 N/A
LTE 1800/2100 -106.4 -109.2 -112
3.3 Power Specifications
3.3.1 Power Requirements
The following table describes the power supply and the fluctuation range.
Table 3-7 Power Supply
Item Index
Power Supply DC: -48 V (-37 V – -60 V DC)
R8852E supports integrated lightning protection module for DC power supply. Its
protection level is 20 KA.
ZXSDR R8852E Product Description
ZTE Confidential & Proprietary 13
3.3.2 Power Consumption
Power consumptions of R8852E at normal ambient temperature are shown in the table
below:
Table 3-8 Power Consumption
RRU Type Configuration Typical Power
Consumption
Peak Power
Consumption
R8852E
S1800
4 GSM TRXs + 1 LTE cell, 20W/GSM
TRX, 2*40W/LTE cell 310W 510W
2 LTE cells, 2*20W/LTE cell 275W 510W
R8852E
S2100
2 LTE cells, 2*20W/LTE cell 280W 520W
2 UMTS carriers +1 LTE cell,
40W/UMTS carrier, 2*40W/LTE cell 340W 520W
3.4 Interface Specifications
The external interfaces of the R8852E are located at the bottom and on the front side of
the chassis.
Figure 3-1 External Interfaces at the Bottom and Side
ZXSDR R8852E Product Description
14 ZTE Confidential & Proprietary
For a description of the external interfaces at the bottom of the R8852E chassis, refer to
the following table.
Table 3-9 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
rectangular terminal
3 ANT1 (TX/RX) TX/RX antenna interface
Built-in one way NSBT
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
6 ANT4 (TX/RX) TX/RX antenna interface 50 Ω DIN-mode
connector
For a description of the external interfaces on the right side of the R8852E chassis, refer
to the following table.
Table 3-10 Description of the External Interfaces on the Right Side
No. Label Interface Interface
Type/Connector
7 OPT1
Communication between the RRU
and a BBU, or RRU cascading
interface
LC-type optical interface
(IEC 874)
8 OPT2 RRU cascading interface LC-type optical interface
(IEC 874)
9 PWR Power input interface 2-pin customized
connector
ZXSDR R8852E Product Description
ZTE Confidential & Proprietary 15
Additionally, R8852E provides 6 LED indicators. The indicators on the R8852E panel
indicate the operating status of the RRU.
3.5 Transmission
R8852E is connected to BBU through CPRI interfaces.
For more information about CPRI interfaces, refer to the following table.
Table 3-11 CPRI Interfaces
Item Value Interface Type Speed Standard
CPRI interface 2 SFP (LC) 6.144 Gbps [2] CPRI V4.2
3.6 Working Environment Specifications
Table 3-12 Environment Specifications
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 per year.
3.7 Electromagnetic Compatibility Specifications
2 The speed here refers to the max capability of the hardware. The specific speed depends on the optical module configuration.
ZXSDR R8852E Product Description
16 ZTE Confidential & Proprietary
Table 3-13 Electromagnetic Compatibility Specifications
Item Characteristics
Static Discharge Immunity Contact Discharge: ±6000V
Air Discharge: ±8000V
Surge Impact Immunity DC Power port Line(Ground): ±2000V
3.8 Reliability Specifications
R8852E system reliability conforms to the national military GJB/Z299B Electronic
Equipment Reliability Estimation Manual and US military handbook MIL-HDBK-217F
Electronic Equipment Reliability Estimation.
Table 3-14 Reliability Characteristics
Item R8852E
MTBF ≥565,000 hours
MTTR 1 hour
Availability index ≥99.999823%
Down duration ≤0.930 min/year
ZXSDR R8852E Product Description
ZTE Confidential & Proprietary 17
4 Glossary Abbreviations 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
top related