ZXSDR A8612 Product Descriptionmocheck.nbtc.go.th/protected/attachments/... · The maximum RRU...

ZXSDR A8612 Product Description


ZTE Confidential & Proprietary 1


© 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.


2 ZTE Confidential & Proprietary

TABLE OF CONTENTS

1 Overview ......................................................................................................... 4

1.1 Introduction ....................................................................................................... 4

1.2 Benefits ............................................................................................................. 5

1.3 Application Scenarios ....................................................................................... 6

1.4 Functionality ...................................................................................................... 6

2 Technical Specification .................................................................................. 7

2.1 Physical Specification ....................................................................................... 7

2.2 Performance Specification ................................................................................ 7

2.2.1 Operation Frequency Bands ............................................................................. 7

2.2.2 ToC Output Power ............................................................................................ 7

2.2.3 Capacity ............................................................................................................ 8

2.2.4 Static Receiving Sensitivity ............................................................................... 8

2.3 Antenna Specification ....................................................................................... 9

2.4 Power Specification ........................................................................................ 10

2.4.1 Power Requirements ...................................................................................... 10

2.4.2 Power Consumption ........................................................................................ 10

2.5 Interface Specification ..................................................................................... 10

2.6 Transmission .................................................................................................. 11

2.7 Working Environment Specification ................................................................. 12

2.8 Electromagnetic Compatibility Specification .................................................... 12

2.9 Reliability Specification ................................................................................... 12

3 Glossary ........................................................................................................ 13



FIGURES

Figure 1-1 Physical Appearance ......................................................................................... 4

TABLES

Table 2-1 Physical Specification ......................................................................................... 7

Table 2-2 Operation Frequency Bands ............................................................................... 7

Table 2-3 ToC Output Power .............................................................................................. 7

Table 2-4 Capacity .............................................................................................................. 8

Table 2-5 Receiver Sensitivity ............................................................................................. 9

Table 2-6 Antenna Specification ......................................................................................... 9

Table 2-7 Power Supply .....................................................................................................10

Table 2-8 Power Consumption ...........................................................................................10

Table 2-9 Description of External Interfaces ......................................................................11

Table 2-10 CPRI Interfaces ................................................................................................11

Table 2-11 Environment Specification ................................................................................12

Table 2-12 Electromagnetic Compatibility Specification .....................................................12

Table 2-13 Reliability Specification ....................................................................................12



1 Overview

1.1 Introduction

ZTE ZXSDR A8612 (hereinafter A8612) is the latest released broadband active antenna

system from ZTE. It consists of remote unit and electrical tilt antenna, supporting

GSM/UMTS/LTE multi-mode operation. A8612 is superior in many aspects in active

antenna solution, dual-band technology and dynamic output power sharing function. The

physical appearances of A8612 are shown in the following figure.

Figure 1-1 Physical Appearance

Compared with traditional solution, the RF module is integrated with antenna by active

antenna solution. In this way, the feeder loss is saved and the installation space, on the

tower, on the pole or against the wall, is greatly reduced.

The document is designed to give an overview of the characteristics of A8612 M1821 in

band 1 and band 3, its key benefits, the architecture, functionality and services, as well

as the system capabilities.

NOTE: In this document, G is short for GSM, U is short for UMTS, and L is short for FDD

LTE.



1.2 Benefits

Integration of Antenna, Simplification of RAN Architecture

A8612 is integrated with remote radio unit and electrical tilt antenna. With this design,

the feeder connections between radio unit and antenna are removed and feeder loss

is saved. The combination also saves the dwindling installation resources on the

tower, on the pole or against the wall.

Broadband, High Integration, and Less Modules

A8612 M1821 supports band 1 and band 3 simultaneously. When there are network

construction or reconstruction requirements both in 1800 MHz and 2100 MHz, one

A8612 replaces two traditional RRUs with one in 1800MHz and the other in

2100MHz. It greatly reduces module quantities, saves installation space and

corresponding operation and maintenance costs.

High output power & Compact Dimension

A8612 has 2*60 W of output power for dual-band operations. High output enables

better coverage and higher data throughput.

Multi-Mode RRU, Smooth Evolution

A8612 M1821 supports GSM, LTE modes in band 3 and UMTS, LTE modes in band

1. In different phases during the evolution process towards LTE, operators can

choose the most appropriate configurations of A8612 through software upgrade to

suit the frequency spectrum holdings.

Wide Beam Width and Narrow Beam Width for Multiple Scenarios

The antenna part of A8612 supports vertical wide beam width and narrow beam

width. A8612 with narrow beam is suitable for street coverage, and AAU with wide

beam is suitable for the coverage of tall wide buildings. A8612 can be installed

vertically or horizontally. When installed horizontally with narrow beam width, A8612

is suitable for coverage of tall narrow buildings.



Slim and Light, Suitable for Hot Spot Coverage

At 17 kg and 17 L in small slim columnar shape, A8612 requires less installation

space. It is easy to be installed on light poles in the streets in the dense urban area.

After the network coverage has been almost completed in dense area, the newly

arisen issues should be considered to improve the user experience, such as capacity

expansion and blind spot coverage in the streets between tall buildings. A8612, with

small size is the appropriate choice for operators in the scenarios mentioned above.

1.3 Application Scenarios

A8612 and Baseband Unit (BBU) comprise the distributed macro base station.

1.4 Functionality

A8612 is the remote radio unit of distributed base station. The signal is transmitted

/received through A8612 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.

A8612 supports the following functionalities:

Supports frequency bands of band 1 and band 3.

Supports 2T2R in one box.

Support 256 QAM modulation in LTE downlink and 64 QAM in uplink.

Supports transmit power report function for every carrier.

Supports overload protection function for power amplifier.

Supports transmit channel switching on/off function.



Supports no affection to the running of BBU and other RRUs that connected to it in

case of failure.

2 Technical Specification

2.1 Physical Specification

Table 2-1 Physical Specification

Item Specification

Size (Height*Diameter) (mm) 785 mm * φ166 mm (17 L)

Weight (kg) 17 kg

Color Silver gray

2.2 Performance Specification

2.2.1 Operation Frequency Bands

Table 2-2 Operation Frequency Bands

Type Operation Radio Frequency Band

A8612 M1821 Band 1 and band 3

Uplink:1710 MHz – 1785 MHz, Downlink:1805 MHz –

1880 MHz

Uplink:1920 MHz – 1980 MHz, Downlink:2110 MHz –

2170 MHz

2.2.2 ToC Output Power

Table 2-3 ToC Output Power

Type TOC Output Power

A8612 M1821 Dual-band operation: 2*60 W



Type TOC Output Power

Single band operation: 2*40 W

Note: The TOC here means the max capability of the hardware. The specific TOC output power is

limited by the license.

2.2.3 Capacity

The maximum RRU configurations in different modes are listed below and capacities of

cells in one row are supported simultaneously.

Table 2-4 Capacity

E-UTRA

Operating

Band

Mode RRU Capacity

Band 1 UL dual-mode 4 UMTS carriers + 2 20 MHz LTE 2T2R cells

LTE single

mode

2 20 MHz LTE 2T2R cells

Band 3 LTE single

mode

2 20 MHz LTE 2T2R cells

GL dual-mode 4 GSM TRXs + 2 20 MHz LTE 2T2R cells

Band 1 +

band 3

LTE single

mode

2 20 MHz LTE 2T2R cells@B1 + 2 20 MHz LTE

2T2R cells@B3

GL dual-mode (4 GSM TRXs + 1 20 MHz LTE 2T2R cell)@B3 + 2

20 MHz LTE 2T2R cells@B1

GUL multi-mode (2 GSM TRXs + 1 20 MHz LTE 2T2R cells)@B3 + (4

UMTS carriers + 1 20 MHz LTE 2T2R cells)@B1

2.2.4 Static Receiving Sensitivity

The static receiving sensitivity of A8612 is shown as following table.



Table 2-5 Receiver Sensitivity

Mode Frequency Band Single

Antenna

Dual

Antennas

Note

GSM Band 3 -113.5 dBm -115.5 dBm -

UMTS Band 1 -126.5 dBm -129.2 dBm Typical Value:

receiver sensitivity

of 12.2K AMR

-125.9 dBm -128.6 dBm Typical Value:

receiver sensitivity

of 3GPP 25.141’s

specification

LTE Band 1/band 3 -106.4 dBm -109.2 dBm -

2.3 Antenna Specification

Table 2-6 Antenna Specification

Antenna Specification Specification

(narrow beam)

Specification

(wide beam)

Frequency Range (MHz) 1710 – 2170 1710 – 2170

Gain (dBi) [email protected] GHz

[email protected] GHz



Polarization(°) ±45 ±45

Half - power Horizontal Beam

width(°) 70±5 68±10

Half - power Vertical Beam

width(°)

13±[email protected] GHz

12±[email protected] GHz 68±18

Electrical Tilt(°) -3 - +12 0

Front to Back Ratio(dB) ≥25 ≥21

Impedance (Ω) 50 50

Lightning protection Direct Ground Direct Ground



2.4 Power Specification

2.4.1 Power Requirements

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

Table 2-7 Power Supply

Item Specification

Power supply DC: -48 V (-37 V – -57 V)

AC: 220 V (154 V – 286 V)

Lightning protection at power

interface

DC:20 kA

AC: 20 kA

2.4.2 Power Consumption

Power consumption of A8612 M1821 depends on its configuration. The value is given in

the typical configuration.

Table 2-8 Power Consumption

Configuration Typical Power

Consumption

Peak Power

Consumption

1L(1.8GHz)+4U(2.1GHz)+1L(

2.1GHz), 2*20W/L,10W/U,

total: 2*60W

DC: 290 W

AC: 300 W

DC: 420 W

AC: 430 W

2.5 Interface Specification

A8612 provides four external interfaces, including power supply, grounding cable

interface and two CPRI interfaces. The description of interface types and connectors is

listed below.



Table 2-9 Description of External Interfaces

No. Label Interface Interface Type/Connector

1 OPT1

Interface for communication

between the RRU and a BBU,

or RRU cascading interface

LC-type optical interface

(IEC 874)

2 OPT2 RRU cascading interface LC-type optical interface

(IEC 874)

3 PWR Power input interface DC power connector

AC power connector

4

Grounding cable interface -

5 LMT O&M and system test RJ45

Additionally, A8612 provides four LED indicators on the panel, which indicate the

operating status of the RRU.

2.6 Transmission

A8612 is connected to BBU through CPRI interfaces.

The following table lists more information about CPRI interfaces.

Table 2-10 CPRI Interfaces

Item Value Interface Type Speed Standard

CPRI interface 2 SFP (LC) 10Gbps [1] CPRI V5.0

1 The speed here refers to the max capability of the hardware. The specific speed depends on the optical module configuration.



2.7 Working Environment Specification

Table 2-11 Environment Specification

Item Specification

Temperature -40°C – +55°C

Relative humidity 5% – 100%

Atmospheric pressure 70 kPa – 106 Kpa

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.

2.8 Electromagnetic Compatibility Specification

Table 2-12 Electromagnetic Compatibility Specification

Item Specification

Static Discharge Immunity Contact Discharge: ±6000 V

Air Discharge: ±8000 V

Surge Impact Immunity DC Power port Line to line: ±2000 V

DC Power port Line to ground: ±4000 V

2.9 Reliability Specification

Table 2-13 Reliability Specification

Item Specification

MTBF ≥440,000 hours

MTTR 1 hour

Availability ≥99.999773%

Down duration ≤1.195 min/year



3 Glossary Abbreviations Full Characteristics

BBU Base Band processing Unit

CPRI Common Public Radio Interface

DL Downlink

DFL Duplexer & Filters

LMT Local Maintenance Terminal

LTE Long Term Evolution

MIMO Multi Input Multi Output

MTBF Mean Time Between Failures

MTTR Mean Time To Recovery

PA Power Amplifier

PWR Power

DTR Dual-channel Transceiver

RF Radio Frequency

RRU Remote Radio Unit

SDR Software Defined Radio

ToC Top of Cabinet

UL Uplink

VSWR Voltage Standing Wave Ratio

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