Agilent Technologies E6651A Manual de usuario

Agilent Technologies

Mobile WiMAX Test Set

Agilent E6651A

User’s Guide

Notices

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Edition

First Edition, July 2007

Agilent Technologies UK, Ltd

Station Road, South Queensferry

West Lothian EH30 9TG, UK

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Safety Notices

CAUTION

A CAUTION notice denotes a haz-

ard. It calls attention to an operat-

ing procedure, practice, or the like

that, if not correctly performed or

adhered to, could result in damage

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WARNING

A WARNING notice denotes a

hazard. It calls attention to an

operating procedure, practice, or

the like that, if not correctly per-

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in personal injury or death. Do not

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notice until the indicated condi-

tions are fully understood and met.

WiMAXis a certification mark of the

WiMAX Forum.

Windows®and MS Windows XP®are U.S.

registered trademarks of Microsoft Corpo-

ration.

E6651A User’s Guide 3

Contents

1 Introduction

Product Overview 8

Base Station Emulator (BSE) 8

Signal Analyzer (SA) 8

Signal Generator (SG) 8

Functions and Features 9

E6651A Features 9

General Specifications 11

Agilent Sales and Service Offices 13

2 Getting Started

Basic Configuration 16

Front Panel 16

Rear Panel 19

Measurement Screen Configuration 21

Setting Window 22

Menu Tree Configuration 24

Basic Operation 26

Turning the Power ON 26

Operational Mode Selection 27

Turning the Power OFF (Normal Termination) 28

Turning the Power OFF (Abnormal Termination) 29

3 Base Station Emulator Mode

Interfacing With the Subscriber Station 32

Uplink Padding Test 35

Downlink UDP Test 37

Downlink Ping Test 38

CINR Test 39

Ranging Test 41

PMC-RSP Test 42

Protocol Function Test 43

Power Control Test 45

Hand-over Test function 48

Setting Parameters 53

4E6651A User’s Guide

Setting General BSE configuration parameter 53

Setting Test Parameters 54

Terminating BSE Mode Operation 56

4 Signal Analyzer Mode

Measurement Preparation 58

SA Mode Setup Procedure 58

System Settings 58

Frequency Menu 61

Amplitude Menu 62

Measurement Menu 63

Modulation Analysis 64

Mobile WiMAX Modulation Accuracy Analysis Window 64

Spectrum Analysis 66

Spectrum Measurement Window 66

Marker Menu 69

Peak Menu 70

Flatness Analysis 71

5 Signal Generator Mode

Signal Generator Mode 74

SG Mode Setup Procedure 74

6 Remote Interface (API) Programming Command Reference

Creating a Test Program 76

Step 1 - Copy and Reference the Dynamic Link Library (DLL) 77

Step 2 - Install the IPX LAN protocol 77

Step 3 - Initialize the E6651A Interface 79

Step 4 - Configure the Measurement Parameters 81

Step 5 - Perform the Test 81

Step 6 - Get the Measurement Results 81

Step 7 - Close the Session 81

Command Reference 82

System information functions 84

General functions 85

Spectrum Mode 99

Flatness 116

BS Emulator Mode 124

BS Emulator Functions 136

BS Emulator Test Functions 139

UL Padding Test 141

E6651A User’s Guide 5

DL UDP Test 143

DL Ping Test 146

Power Control Test 150

Tools Functions 169

Functions used in V1.5 170

A Appendix A - Network Entry Procedure

Network Entry Procedure Overview 172

Network Entry Procedure Detail 174

Downlink Synchronization and Uplink Parameter Information 174

Initial Ranging Procedure Execution and Basic Capabilities

Negotiation 176

Registration Procedure 180

Periodic Ranging for Connection Maintenance 182

REP-REQ message Setting 183

Profile Selection 185

B Appendix B - Sample Usage Procedures

Turning the Power On 188

Starting the Program 188

Setting the Center Frequency 189

Setting the Attenuation 190

Setting the Amplitude 191

Enabling MOD and RF Modes 192

Starting and Stopping BSE Mode 193

Setting and Modifying the Modulation Scheme 194

Starting an Uplink or Downlink Test 195

Performing Modulation Analysis in SA Mode 196

Performing Spectrum Analysis in SA Mode 197

Attenuation Setting Recommendations 198

Abbreviations and Acronyms 199

6E6651A User’s Guide

Agilent E6651A Mobile WiMAX Test Set

E6651A User’s Guide

Agilent Technologies

Introduction

Product Overview 8

Functions and Features 9

General Specifications 11

Agilent Sales and Service Offices 13

This document describes the operation of the E6651A Test Set, a Mobile

WiMAX 802.16e Subscriber Station Tester. This product is used for

protocol verification and performance measurement of Mobile WiMAX

Subscriber Stations (SS). The E6651A Test Set was designed to be

operated as a standard Mobile WiMAX base station, and is also capable of

analyzing and generating Mobile WiMAX signals.

8E6651A User’s Guide

1Introduction

Product Overview

The E6651A Test Set is designed to test and analyze the

performance and signaling of Mobile WiMAX subscriber

stations based on the IEEE 802.16e standard. The Test Set

consists of three major operating modes:

Figure 1 The Agilent E6651A Mobile WiMAX Test Set

Base Station Emulator (BSE)

In Base Station Emulator (BSE) mode, the Test Set simulates

the operation of a Mobile WiMAX base station.

Signal Analyzer (SA)

In Signal Analyzer (SA) mode, the Test Set can be used to

analyze Mobile WiMAX uplink signals using modulation,

spectrum and flatness analysis. Modulation Analysis mode

displays the OFDM signal in both frequency and time

domain. The Spectrum Analysis functionality, implemented

using a Fast Fourier Transform (FFT) algorithm, displays the

measured WiMAX signal in the frequency domain. Flatness

Analysis enables comparison of power levels of the spectral

components.

Signal Generator (SG)

In Signal Generator (SG) mode, the Test Set generates

standard Mobile WiMAX uplink and downlink signals.

Introduction 1

E6651A User’s Guide 9

Functions and Features

E6651A Features

•IEEE 802.16e OFDMA Mobile WiMAX subscriber station

tester

•Real- time Mobile WiMAX downlink signal modulation

•Real- time Mobile WiMAX uplink demodulation

•Base station emulation with MAC, protocol stack

•TDD synchronization (auto- switching) of signal generator

and signal analyzer

•Ranging code detection

•Various preamble, FCH, DL- MAP, UL- MAP, burst

configuration settings

•DL PUSC, DL FUSC, UL PUSC

Mobile WiMAX radio

(PHY) measurements

•OFDM constellation and EVM (BPSK, QPSK, 16QAM,

64QAM)

•UL data EVM

•Error vector spectrum, error vector versus time

•CCDF (complimentary cumulative distribution function)

•Channel power, occupied bandwidth

Transmitter •Modulation and coding

•Ranging support

•Power level control

•Synchronization

•Maximum output signal

•Frequency accuracy

•Channel bandwidth measurement

•Spectral flatness

•Relative constellation error (EVM)

10 E6651A User’s Guide

1Introduction

Receiver •Maximum tolerable signal

•Maximum input signal

•Sensitivity

•Cyclic prefix

•Preambles

•Frame duration timing

•RSSI

•BER versus CINR

Mobile WiMAX

MAC test items

•Response time for MAC management request message

•Initial ranging procedure verification under exceptional

RF conditions

•Dynamic service flow status for given conditions

•SS MAC layer verification and performance test

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