ZTE FDD R8862A Product Description

ZXSDR FDD R8862A Product Description

ZXSDR FDD R8862A Product Description

ZXSDR FDD R8862A Product Description Version V1.0

Date 2013-04-10

Author ZTE

Reviewer

Notes Not open to the third party

© 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.

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ZXSDR FDD R8862A Product Description

TABLE OF CONTENTS

2

1 1.1 1.2 1.3 1.4

Overview ............................................................................................................ 6 Introduction .......................................................................................................... 6 LTE Network Architecture .................................................................................... 6 Benefits................................................................................................................ 7 Application Scenarios .......................................................................................... 9

2 2.1 2.2 2.2.1 2.2.2 2.2.3 2.2.4 2.3 2.4

Product Architecture ....................................................................................... 10 Physical Appearance ......................................................................................... 10 Hardware Architecture ....................................................................................... 10 QTR ................................................................................................................... 11 DFL .................................................................................................................... 12 PA12 PWR .................................................................................................................. 12 Software Architecture ......................................................................................... 13 Functionality....................................................................................................... 14

3 3.1 3.2 3.2.1 3.2.2 3.2.3 3.2.4 3.3 3.3.1 3.3.2 3.4 3.5 3.6 3.7

Technical Specifications ................................................................................. 15 Physical Indices ................................................................................................. 15 Performance Indices .......................................................................................... 15 Operation Frequency Band ................................................................................ 15 ToC Output Power ............................................................................................. 16 Bandwidth .......................................................................................................... 16 Receiver Sensitivity............................................................................................ 16 Power Indices .................................................................................................... 17 Power Requirements ......................................................................................... 17 Power Consumption........................................................................................... 17 Interface Indices................................................................................................. 18 Transmission ..................................................................................................... 21 Working Environment Indices............................................................................. 22 Electromagnetic Compatibility Indices ................................................................ 22

4

Installation Modes ........................................................................................... 22

5

Networking Modes........................................................................................... 24

6 6.1 6.2 6.3

Standard Compliance and Specifications ..................................................... 26 Specifications and Laws..................................................................................... 26 Standard Specifications ..................................................................................... 26 Safety Requirements ......................................................................................... 27

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Glossary ........................................................................................................... 27

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ZXSDR FDD R8862A Product Description

FIGURES Figure 1-1 LTE Network Architecture ...................................................................................7 Figure 1-2

Distributed macro eNodeB Application Scenarios ...............................................9

Figure 2-1

ZXSDR R8862A 3D Appearance ......................................................................10

Figure 2-2

R8862A System Structure.................................................................................11

Figure 2-3

ZXSDR R8862A Software Architecture .............................................................13

Figure 3-1

ZXSDR R8862A Physical Appearance..............................................................15

Figure 3-2 External Interfaces at the Bottom ......................................................................18 Figure 3-3 External Interfaces on the Right Side ................................................................19 Figure 3-4 LED Indicators on the Panel .............................................................................20 Figure 4-1 Pole-mounted Installation .................................................................................23 Figure 4-2 Wall-mounted Installation ..................................................................................23 Figure 5-1

ZXSDR R8862A Star Networking......................................................................24

TABLES Table 3-1 Physical Indices .................................................................................................15 Table 3-2 Operation Frequency Band ................................................................................15 Table 3-3 ToC Output Power .............................................................................................16 Table 3-4 ZXSDR R8862A Receiver Sensitivity .................................................................16 Table 3-5 Power Supply .....................................................................................................17 Table 3-6 R8862A Power Consumption on Different Frequency Bands .............................18 Table 3-7 Description of the External Interfaces at the Bottom ...........................................18 Table 3-8 Description of the External Interfaces on the Right Side.....................................20 Table 3-9 Indicator Descriptions.........................................................................................20 Table 3-10

CPRI Interfaces................................................................................................22

Table 3-11 Environment Indices.........................................................................................22

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Table 3-12 Electromagnetic Compatibility Indices ..............................................................22 Table 6-1 Safety Requirements for the ZXSDR R8862A ....................................................27

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ZXSDR FDD R8862A Product Description

1

Overview

1.1

Introduction This document provides a high level description of ZTE ZXSDR R8862A, which is one new compacted distributed RRU (Remote Radio Unit) used in ZTE LTE total solution. The RRU is based on common ZTE compacted RRU platform, and can work in GSM, CDMA, UMTS or LTE single mode or multi-mode at the same frequency band. The volume of RRU is about 12L or 15L(AP700), and its weight is 15Kg or 16Kg(AP700). R8862A supports AC and DC power supply. R8862A provides 2T4R function with 4 RF-Antenna connectors and 4T8R, 4T4R functions by R8862A 1+1 assembly. The document is designed to give an overview of the characteristics of R8862A, its key benefits, the architecture, functionality and services. The document also describes the system capabilities. The R8862A Product Description is updated regularly under change control.

1.2

LTE Network Architecture LTE is a market driven technology, which offers higher data rate (150Mbps downlink and 75Mbps uplink for each cell @ 20MHz, MIMO 2*2) with low latency and short setup delay that aim to improve end-user throughput, increase cell capacity, reduce user plane latency, and consequently offer superior user experience with full mobility. The flat, all IP-based network architecture and improved spectrum efficiency (2 to 4 times higher compared with HSPA Release 6) have laid the foundation for low cost per bit delivery and overall CAPEX/OPEX reduction. Unlike other technologies like HSPA, LTE is contained within a new Packet Core architecture called EPC (Evolved Packet Core) network architecture. Technically, 3GPP specifies the EPC to support the E-UTRAN. TCP/IP protocols are adopted in EPC, so LTE can support all IP-based services including voice, on-line gaming, IPTV and message with end-to-end QoS (Quality of Service). The EPC network architecture can

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ZXSDR FDD R8862A Product Description

improve the connection and hand-over to other fixed-line and wireless access technologies, which enables operator to deliver a seamless mobility experience.

Figure 1-1 LTE Network Architecture

eNodeB – Distributed SDR X2 eNodeB – Integrated SDR X2

S1

MME / S-GW

S1 S1 X2

eNodeB – Distributed SDR

MME / S-GW

S1

EUTRA N

EPC EPS

To achieve all the targets mentioned herein, LTE PHY (Physical Layer) employs advanced technologies including Orthogonal Frequency Division Multiple Access (OFDMA) and Multiple-Input and Multiple-Output (MIMO) data transmission. Furthermore, the LTE PHY deploys the OFDMA for the downlink and Single Carrier Frequency Division Multiple Access (SC-FDMA) for the uplink. These technologies will further minimize the LTE system and UE complexities while allowing flexible spectrum deployment in the existing or new frequency spectrum.

1.3

Benefits 

Multi-Mode RRU ZXSDR R8862A is fully software defined, then supports GSM/UMTS/CDMA/LTE multi-mode at the same frequency band simultaneously. Therefore, it fully satisfies operators’ requirements of hybrid network deployment and long term evolution with lowest cost.

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ZXSDR FDD R8862A Product Description



Wider Bandwidth The R8862A is based on ZTE owned Multi-Carrier Power Amplifier (MCPA) technology



MIMO Supported, Better Performance ZXSDR R8862A supports DL 2x2 MIMO mode, and DL 4x4 MIMO by two R8862A with same frequency band or two DL 2x2 MIMO by two R8862A with two frequency band.



Zero footprint and easy deployment ZXSDR R8862A is based on new compacted RRU platform and high efficiency Power Amplifier technology. As a result, it brings better customer experience, zero footprint and easy deployment 

ZXSDR R8862A is 12L or 15L(AP700) in volume and 15Kg or 16Kg(AP700) in weight;



It is portable to transport and flexible to install on the pole, tower and wall, thus reducing OPEX.



Higher Efficiency, Lower TCO 

ZXSDR R8862A’s PA efficiency can reach up to 45% (The PA efficiency is different based on different working frequency bands);



It supports dynamic adaptive PA power supply due to the output power, which reduces power consumption.



It is passive thermal dissipation designed, so it is power saving and less noisy. Integrated lightning protection unit ZXSDR R8862A supports integrated Lightning protection unit (PIB), and the protection level is 20 KA.

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1.4

Application Scenarios R8862A as the Remote Radio Unit (RRU) and Baseband Unit (BBU) comprise distributed macro eNodeB. Typical application scenarios are shown in the following figure:

Figure 1-2 Distributed macro eNodeB Application Scenarios

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ZXSDR FDD R8862A Product Description

2

Product Architecture

2.1

Physical Appearance The physical appearances of R8862A are shown in the following figure.

Figure 2-1 ZXSDR R8862A 3D Appearance

2.2

Hardware Architecture The hardware architecture of R8862A is shown in Figure 2-2.

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ZXSDR FDD R8862A Product Description

Figure 2-2 R8862A System Structure

PA_PWR

PWR

QTR

PA_PWR

DFL

2x PA

ANT1

TX/RX

ANT2

RX

ANT3

RX

ANT4

PWR_in

OPT AISG/MON/LMT

TX/RX

PE

R8862A includes 4 main hardware modules:

2.2.1



Quad-channel Transceiver (QTR)



Duplex Filters LNA (DFL)



2x Power Amplifier (PA)



Power module (PWR)

QTR The QTR has following functions: 

Process 4 received signals and 2 transmitted signals;



Radio signal Up/Down Conversion;



Downlink IQ signal multiplexing and uplink signal de-multiplexing;



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



Convert between optical and electric signal;



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

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ZXSDR FDD R8862A Product Description



Voltage Standing Wave Ratio (VSWR) measurement and report;



Hardware failure self-detection and alarm;



Over-heat detection and alarm;



Provide communication interfaces, 2 CPRI interfaces, 2 dry contacts, one RS485 serial port for external monitor equipment communication, 1 AISG for electrical tilt antenna;



Integrated lightning protect unit for the AISG, RS485 and dry contacts, and the protection level is 20 KA.



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:

2.2.4



Perform radio signal amplifying function;



Temperature report function;



Low-Noise-Amplifier (LNA) function;



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

PWR The PWR has following functions:

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ZXSDR FDD R8862A Product Description



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.

2.3

Software Architecture The software architecture of R8862A can be divided into two layers: SDR Unified Platform Software and Application Software. The architecture is shown in the following figure:

Figure 2-3 ZXSDR R8862A 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.

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ZXSDR FDD R8862A Product Description

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 R8862A is the remote radio unit of distributed base station. The signal is transmitted /received through R8862A 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 R8862A include: 

Support the configuration of 5MHz/10MHz/15MHz/20MHz scalable bandwidth;



Band Supported: 700M/900M/1.7G/2.1GHz



Support 2T4R in one box which can optimize spectrum efficiency greatly and improve network uplink performance



Support transmit power report function for every carrier



Support overload protection function for power amplifier



Support transmit channel switching on/off function;



R8862A software failure will not affect the running of BBU and other R8862As which are connected to it.

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ZXSDR FDD R8862A Product Description

3

Technical Specifications

3.1

Physical Indices R8862A is one new compacted RRU, and its dimension is 12L or 15L(AP700). The weight (without sunshield) is 15Kg or 16Kg(AP700).

Figure 3-1 ZXSDR R8862A Physical Appearance

Table 3-1 Physical Indices Item

Indices

Size (H*W*D) (mm)

422*218*133mm 422*218*163mm(AP700)

Weight (kg)

15 kg/16Kg(AP700)

Color

Silver gray

3.2

Performance Indices

3.2.1

Operation Frequency Band Table 3-2 Operation Frequency Band Type

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Operation Radio Frequency Band(MHz)

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ZXSDR FDD R8862A Product Description

Type R8862A

Operation Radio Frequency Band(MHz) 700MHz( Tx: 758MHz---803MHz, Rx:703MHz---748MHz) 900MHz ( Tx: 925MHz---960MHz, Rx:880MHz---915MHz) 1700 MHz (Type1:TX: 1805MHz - 1860MHz; RX: 1710MHz - 1765MHz; Type2:TX: 1830MHz - 1880MHz;RX: 1735MHz - 1785MHz) 2100 MHz ( Tx: 2110MHz---2170MHz, Rx:1920MHz---1980MHz)

3.2.2

ToC Output Power Table 3-3 ToC Output Power TOC Output Power [1]

Type

3.2.3

R8862A S7200

2*60W

R8862A S9000

2*60W

R8862A S1800

2*60W

R8862A S2100

2*60W

Bandwidth ZXSDR R8862A supports all LTE bandwidth: Single Carrier: 5MHz, 10MHz, 15MHz and 20MHz Dual Carriers: (5,10,15,20)MHz+(5,10,15,20)MHz

3.2.4

Receiver Sensitivity The receiver sensitivity of R8862A is shown as following table:

Table 3-4 ZXSDR R8862A Receiver Sensitivity Frequency Band

1R @ LTE

2R @ LTE

4R @ LTE

8R @ LTE

700MHz

-106.7dbm

-109.5dbm

-112.3dbm

-115.0dbm

900MHz

-106.6dbm

-109.4dbm

-112.2dbm

-114.9dbm

1

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

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Frequency Band

1R @ LTE

2R @ LTE

4R @ LTE

8R @ LTE

1.7GHz

-106.4dbm

-109.2dbm

-112dbm

-114.7dbm

2.1GHz

-106.4dbm

-109.2dbm

-112dbm

-114.7dbm

3.3

Power Indices

3.3.1

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

Table 3-5 Power Supply Item

Index DC: -48 V (-37 V – -60 V DC)

Power Supply

AC: 220 V / 100 V (90 V – 280 V AC)

What’s more, R8862A supports integrated lightning protection module for DC power supply. Its protection level is 20 KA.

3.3.2

Power Consumption

Item

Power

700MHz

900MHz

1.7G

2.1G

Typical power consumption (W)

DC

215

210

220

215

Maximum power consumption (W)

DC

442

430

450

440

Typical power consumption (W)

AC

237

230

240

236

Maximum power consumption (W)

AC

464

451

472

462

Power consumptions of R8862A with Single mode and single carrier at normal ambient temperature are shown in the table below:

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ZXSDR FDD R8862A Product Description

Table 3-6 R8862A Power Consumption on Different Frequency Bands

3.4

Interface Indices The external interfaces of the ZXSDR R8862A 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 ZXSDR R8862A chassis.

Figure 3-2 External Interfaces at the Bottom

For a description of the external interfaces at the bottom of the ZXSDR R8862A chassis, refer to Table 3-7.

Table 3-7 Description of the External Interfaces at the Bottom No.

Label

Interface

Interface Type/Connector

AISG equipment interface 1

AISG/MON

MON external monitoring interface

DB15 connector

LMT O&M Ethernet interface

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No. 2

3

Label GND ANT1 (TX/RX)

Interface Protective grounding interface

Interface Type/Connector 16 mm2 yellow-green round terminal

TX/RX antenna interface

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

TX/RX antenna interface

50 Ω DIN-mode connector

6

ANT4 (TX/RX)

Figure 3-3 shows the external interfaces on the right side of the ZXSDR R8862A chassis.

Figure 3-3 External Interfaces on the Right Side

For a description of the external interfaces on the right side of the ZXSDR R8862A chassis, refer to Table 3-8.

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ZXSDR FDD R8862A Product Description

Table 3-8 Description of the External Interfaces on the Right Side No.

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 Grounding cable interface for

4

AC power supply

LC-type optical interface (IEC 874) 2-pin customized connector -

Additionally, R8862A provides 6 LED indicators. The indicators on the ZXSDR R8862A 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 LED Indicators on the Panel

For descriptions about LED indicators, please refer to Table 3-9.

Table 3-9 Indicator Descriptions Label

20

Meaning

Color

Operational Mode

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ZXSDR FDD R8862A Product Description

Label RUN

ALM

Meaning

Color

Operational Mode 

Lit: restart or power-on.

status



Flashing at 1 Hz: operating normally.

indicator



Flashing at 5 Hz: downloading a version file.



Not lit: unsuccessful self-test.



Not lit: no alarm during operation, restart,

Operating

Alarm

Green

Red

indicator

OPT1

power-on, and software downloading. 

Flashing at 5 Hz: major alarm or critical alarm.



Flashing at 1 Hz: minor alarm.



Lit: normal optical fiber link.

optical



Not lit: disconnected optical fiber link.

interface 1



Flashing at 5 Hz: The link acts as a clock

Status of

Green

source and the phase-locked loop is in fast capture status. 

Flashing at 0.25 Hz: The link acts as a clock source and the phase-locked loop is in tracking status.

OPT2



Lit: normal optical fiber link.

optical



Not lit: disconnected optical fiber link.

interface 2



Flashing at 5 Hz: The link acts as a clock

Status of

Green

source and the phase-locked loop is in fast capture status. 

Flashing at 0.25 Hz: The link acts as a clock source and the phase-locked loop is in tracking status.

VSR

VSWR

Green/Red

error indicator ACT

RRU

Green/Red



Lit green: No alarm occurs.



Lit red: An alarm occurs.



Lit green: The RRU-BBU link is normal and

operating status indicator

3.5

the cell is established successfully. 

Lit red: The RRU-BBU link is faulty and the cell fails to be established.

Transmission R8862A is connected to BBU through CPRI interfaces. I.

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ZXSDR FDD R8862A Product Description

For more information about CPRI interfaces, refer to Table 3-10.

Table 3-10 CPRI Interfaces Item

Value

Interface

Speed

Standard

Type CPRI interface

3.6

2

SFP (LC)

6/10 Gbps

CPRI V4.1

Working Environment Indices Table 3-11 Environment Indices Item Temperature

-25 to +45°C (Vertical installation, with solar radiation) -25 to +50°C (Vertical installation, without solar radiation)

Relative Humidity

2% to100%

Waterproof/Dustproof

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

Ground

3.7

Characteristics

area where thunderstorm days is less than 20 per year.

Electromagnetic Compatibility Indices Table 3-12 Electromagnetic Compatibility Indices Item Static Discharge Immunity Surge Impact Immunity

4

Characteristics Contact Discharge: ±6000V Air Discharge: ±8000V DC Power port Line(Ground): ±2000V

Installation Modes ZXSDR R8862A can be mounted on wall, or mounted on pole. Figure 4-1 shows the pole-mounted installation mode.

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Figure 4-1 Pole-mounted Installation

Figure 4-2 shows the Wall-mounted installation mode.

Figure 4-2 Wall-mounted Installation

Figure 4-3 shows the 1+1 assembly mounted installation mode.

Figure 4-3 1+1 assembly mounted Installation

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ZXSDR FDD R8862A Product Description

5

Networking Modes The ZXSDR R8862A supports star and cascading networking mode. The RRH supports 4-antenna and 50MHz channel bandwidth. It uses one 10Gbps BIDI optical module to connect to the BBU via only one fiber. Figure 5-1 shows the star networking.

Figure 5-1 ZXSDR R8862A Star Networking

RRH

RRH

BBU RRH

RRH

RRH

RRH

Fiber

Figure 5-2 shows the cascading networking.

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ZXSDR FDD R8862A Product Description

Figure 5-2 ZXSDR R8862A Cascading Networking

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ZXSDR FDD R8862A Product Description

6

Standard Compliance and Specifications

6.1

Specifications and Laws The following laws, government decrees and publication should be observed: 

Government Radio Wave Laws



Government decree and publication related to the Japanese Radio Wave Laws



Audit standards related to the Government Radio Wave Laws



Telecommunications Business Law



Government decree and publication related to the Telecommunications Business Law



6.2

Product Liability Law

Standard Specifications The following specifications should be observed: 

AXGP Forum 36 Series specifications



ARIB STD-T95 V1.1 and the following version



RoHS 5

Measures should be discussed once any change to the versions mentioned above happens or any new function is supported.

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6.3

Safety Requirements Table 6-1 shows the safety requirements for the ZXSDR R8862A.

Table 6-1 Safety Requirements for the ZXSDR R8862A Item

ZXSDR R8862A

Surge

IEC 61000-4-5 Level 4

ESD

IEC 61000-4-2 Level 3 VCCI Class B (Conducted/Radiated Emission)，IEC 61000-4 series

EMI

7

(Immunity)

Glossary Abbreviations

Full Name

3GPP

3rd Generation Partnership Project

BBU

Base Band processing Unit

BSP

Board Support Package

CAPEX

Capital Expenditure

CPRI

Common Public Radio Interface

DIF

Digital Intermediate Frequency

DL

Downlink

DFL

Duplexer & Filters

DPD

Digital Pre-Distortion

EUTRAN

Evolved Universal Mobile Telecommunications System

GSM

Global System for Mobile communications

HSPA+

HSPA Evolution

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

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ZXSDR FDD R8862A Product Description

Abbreviations

28

Full Name

MTTR

Mean Time To Recovery

OAM

Operating And Maintenance

OFDMA

Orthogonal Frequency Division Multiple Access

OPEX

Operation Expenditure

OSS

Operation Support Sub-system

PA

Power Amplifier

PWR

Power

QTR

Quad-channel Transceiver

RF

Radio Frequency

RRU

Remote Radio Unit

SC-FDMA

Single Carrier Frequency Division Multiple Access

SDR

Software Defined Radio

ToC

Top of Cabinet

UE

User Equipment

UL

Uplink

UTRAN

UMTS Terrestrial Radio Access Network

VSWR

Voltage Standing Wave Ratio

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