Service Assurance for Voice over Wifi And 3g Networks

, by Lau, Richard; Khare, Ram; Chang, William Y.

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ISBN: 9781596930001 | 1596930004
Cover: Hardcover
Copyright: 8/31/2005

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Due to key developments in the telecommunications industry, such as Voice over WiFi and 3G network integration, together with increasingly aggressive competition and rapid technology changes, service providers are faced with the challenge of creating a new, service-centric management model that provides for the creation of new services and assures superior service quality. This unique resource offers a practical view of the service model concept and discusses the management issues that you need to understand in order to implement an effective management solution for operating in today's competitive environment.

Foreword

xiii

Preface

xvii

Acknowledgments

xxi

Chapter 1 Introduction to Service Assurance

(30)

1.1 Service Assurance

(5)

1.1.1 What Is Service Assurance?

(4)

1.1.2 Values of Service Assurance to a Service Provider

(1)

1.2 Current Service Assurance Practices

(7)

1.2.1 Fault-Centric View

(2)

1.2.2 Performance-Centric View

(2)

1.2.3 Configuration-Centric View

(1)

1.2.4 Beyond the Basics

(1)

1.3 The New Trend for Service Assurance Methods

(12)

1.3.1 Business Goals

(3)

1.3.2 Developing a New Focus

(1)

1.3.3 Fully Integrated Service View

(4)

1.3.4 Customer Service Aspect

(1)

1.3.5 Operational Aspect

(1)

1.3.6 OSS Maturity

(1)

1.4 Getting Ready for the Next Step

(2)

References

(2)

Chapter 2 An Integrated End-to-End SLA as a Service Provider Value Adder

(44)

2.1 What Is Included in an SLA?

(5)

2.1.1 The External SLA

(1)

2.1.2 The Internal SLA

(1)

2.1.3 The Third-Party SLA

(1)

2.1.4 Motivation for Using an SLA

(1)

2.2 The Value Chain of Wireless Application Services

(10)

2.2.1 Customers and End Users

(1)

2.2.2 Service Retailers

(1)

2.2.3 Mobile Virtual Network Operators

(1)

2.2.4 Primary Public Land Mobile Network Providers

(2)

2.2.5 Third-Party Network and Service Providers

(1)

2.2.6 Content Providers

(1)

2.2.7 Handset Providers

(1)

2.2.8 Roaming Partners

(2)

2.3 End-to-End SLA Implications

(13)

2.3.1 Customer Perspectives

(1)

2.3.2 Provider Perspectives

(1)

2.3.3 QoS in End-to-End SLAs

(1)

2.3.4 The Service Order

(2)

2.3.5 Service Fulfillment

(1)

2.3.6 Customer Relationships

(1)

2.3.7 Assurance

(4)

2.3.8 Billing and Accounting

(1)

2.4 SLA Design and Negotiation

(7)

2.4.1 Service-Level Definitions

(3)

2.4.2 Product/Service Development

(2)

2.4.3 Negotiation and Sales

(1)

2.5 SLA Implementation and Execution

(4)

2.5.1 Implementation

(1)

2.5.2 Execution

(1)

2.5.3 Assessment

(2)

2.6 SLA Development and Management Flows

(2)

2.7 Conclusion

(1)

References

(1)

Chapter 3 WiFi and 3G Network Technologies

(56)

3.1 Introduction

(1)

3.2 WiFi Networking

(19)

3.2.1 WiFi Standards and Technologies

(3)

3.2.2 Some Selected WiFi-Related Standards

(4)

3.2.3 WiFi and Ethernet: 802.11 and 802.3

(1)

3.2.4 WiMax: 802.16 and 802.20

(1)

3.2.5 WiFi Networking Topologies

(3)

3.2.6 WiFi Systems Architecture

(3)

3.2.7 WiFi Management, Performance, and Security Issues

(4)

3.2.8 WiFi Roaming and Mobility

(1)

3.3 3G Networking

(30)

3.3.1 3GPP-Based 3G Networks

(20)

3.3.2 3GPP2-Based 3G Networks

116

(9)

3.4 WiFi-3G Networking Integration for Data Services

125

(4)

3.4.1 Why Use WiFi-3G Data Roaming?

125

(1)

3.4.2 WiFi-3G Integration Work in Standards Groups

126

(1)

3.4.3 WiFi and 3G Integration Scenarios for Roaming

127

(2)

3.5 Conclusion

129

(1)

References

130

(1)

Selected Bibliography

130

(1)

Chapter 4 OSS Base Platform Functionalities and Technologies

131

(46)

4.1 Operations Support Systems

131

(10)

4.1.1 Alignment to New Business Objectives

135

(1)

4.1.2 Business Process Considerations

136

(2)

4.1.3 Integrated OSS Architecture

138

(3)

4.2 OSS Infrastructure, Flows, and Cycles

141

(14)

4.2.1 Solution Approaches

142

(4)

4.2.2 OSS Information Flows

146

(3)

4.2.3 OSS Information Flow Life Cycles

149

(6)

4.3 OSS Integration

155

(18)

4.3.1 Fulfillment

156

(6)

4.3.2 Service Assurance

162

(8)

4.3.3 Billing and Revenue Support Process

170

(1)

4.3.4 Fraud Management Process

171

(2)

4.4 Conclusion

173

(1)

References

174

(3)

Chapter 5 Service Model Fundamentals

177

(60)

5.1 Driving Force: Why Is It Necessary to Have a Service Model?

178

(1)

5.2 Service Model in a Nutshell

179

(1)

5.3 Service Model Design Considerations

180

(1)

5.3.1 Managing Complex Services

180

(1)

5.3.2 Supporting Reusability

180

(1)

5.3.3 Adapting to Different Business Needs

181

(1)

5.3.4 Bridging Services and Networks

181

(1)

5.3.5 Supporting Future OSS Extensions

181

(1)

5.4 Research in Service Model Methodologies

181

(5)

5.4.1 Measurement Navigation Graph

182

(1)

5.4.2 The Internet Service Model

183

(1)

5.4.3 Service Model with Focus on Root-Cause Analysis

183

(3)

5.4.4 Service Model Literature Summary

186

(1)

5.5 Service Modeling Details

186

(17)

5.5.1 Graph Structure of the Service Model

187

(2)

5.5.2 Service Modeling

189

(9)

5.5.3 Anatomy of a Component

198

(3)

5.5.4 Basic Components Template

201

(2)

5.6 Computational Tools for Statistical Analysis

203

(16)

5.6.1 Statistical Tools and Properties

204

(1)

5.6.2 Relationship Between Two Random Variables

205

(3)

5.6.3 Modeling KPIs and KQIs as Random Processes

208

(1)

5.6.4 Hypothesis Testing and Confidence Level

209

(4)

5.6.5 Applications Based on Statistical Relationships Between KPIs

213

(6)

5.7 Application of Service Model to Service Assurance

219

(16)

5.7.1 Service Model–Based Assurance

219

(1)

5.7.2 SLA Management

220

(4)

5.7.3 Solving QoS Problems

224

(2)

5.7.4 Service Impact Analysis and Prioritization

226

(4)

5.7.5 Finding the Most Likely Root-Cause KPIs

230

(4)

5.7.6 Corrective Actions

234

(1)

5.7.7 Service and Traffic Planning

234

(1)

5.8 Summary

235

(1)

References

236

(1)

Chapter 6 Voice over WiFi and Integrated WiFi-3G Networks

237

(62)

6.1 Introduction

237

(1)

6.2 WiFi and Integrated WiFi/3G Services

238

(2)

6.2.1 Why Use VoWiFi?

238

(1)

6.2.2 Why Use Integration of VoWiFi/3G Networks?

239

(1)

6.3 Evolution of VoIP Services

240

(2)

6.4 Basic VoIP Technology

242

(17)

6.4.1 VoIP Service Alternatives and Protocols

243

(1)

6.4.2 H.323 and VoIP

244

(2)

6.4.3 SIP and VoIP

246

(5)

6.4.4 Other VoIP-Related Protocols

251

(3)

6.4.5 Softswitch, Media Gateways and Controllers, and VoIP

254

(1)

6.4.6 IP PBX/Call Manager and VoIP

255

(1)

6.4.7 Controller-Controller Protocols: BICC

256

(1)

6.4.8 H.323/SIP Interworking

257

(2)

6.5 WiFi and VoIP

259

(2)

6.6 3G Networks and VoIP

261

(5)

6.6.1 3GPP IMS Domain and VoIP

262

(2)

6.6.2 3GPP2 MMD Domain and VoIP

264

(2)

6.7 VoWiFi and Integrated WiFi/3G Network Architecture

266

(7)

6.7.1 Network Domain View

266

(3)

6.7.2 Technology View

269

(1)

6.7.3 Business View

269

(4)

6.8 VoWiFi from Enterprise, Hotspot, and Broadband Operator Perspectives

273

(5)

6.8.1 Evolution of VoWiFi in Enterprises

273

(1)

6.8.2 Enterprise Perspective on VoWiFi Architecture

273

(4)

6.8.3 Hotspot Operator Perspective on VoWiFi

277

(1)

6.8.4 Broadband Operator Perspective on VoWiFi

277

(1)

6.8.5 Service Provider Perspective on VoB

277

(1)

6.9 Mobile Operator Perspective on VoWiFi

278

(6)

6.9.1 Evolution of VoIP in Operator Environments

278

(2)

6.9.2 New Requirements at the Network Edge

280

(1)

6.9.3 WiFi and 3G Integration Requirements for VoIP

280

(1)

6.9.4 Roaming and Mobility

281

(3)

6.10 WiFi and 3G Integration Scenarios for VoIP

284

(7)

6.10.1 Single-Mode Integration (VoIP on Both WiFi and 3G Networks)

285

(2)

6.10.2 Dual-Mode Integration (VoIP on WiFi and Circuit-Switched Voice on 3G Networks)

287

(4)

6.11 Overview of VoIP SIP Call Flows

291

(3)

6.12 VoIP Call Flows in Integrated WiFi and 3G Networks

294

(3)

6.12.1 Calls Originating in V-3G and Terminating in V-3G Networks

294

(1)

6.12.2 Calls Originating in V-WiFi and Terminating in V-3G Networks

294

(3)

6.13 Conclusion

297

(1)

References

297

(1)

Selected Bibliography

297

(2)

Chapter 7 Service Model of Voice over Integrated WiFi and 3G Networks

299

(54)

7.1 Introduction

299

(2)

7.2 Business-Driven Service Model

301

(21)

7.2.1 Service Perspective

302

(1)

7.2.2 Business Perspective

302

(2)

7.2.3 Network Perspective

304

(18)

7.3 Quality-Monitoring Perspective

322

(27)

7.3.1 General Voice Performance Metrics

322

(8)

7.3.2 Service- and Network-Level Monitoring

330

(7)

7.3.3 Quality Monitoring Using RTCP in VoWiFi/3G

337

(3)

7.3.4 Critical Monitoring Points

340

(9)

7.4 Summary

349

(2)

References

351

(1)

Selected Bibliography

352

(1)

Chapter 8 VoWiFi/3G Service Assurance Operations

353

(46)

8.1 Introduction

353

(1)

8.2 Service Assurance for VoWiFi/3G

354

(6)

8.2.1 Scalable Assurance Operations

354

(2)

8.2.2 PSTN Assurance

356

(1)

8.2.3 New Challenges in Assurance of VoWiFi/3G Service

356

(3)

8.2.4 Desirable Features of Service Assurance

359

(1)

8.3 VoWIFI/3G Problem Descriptions

360

(17)

8.3.1 The Echo Problem

360

(2)

8.3.2 Clipping of Voice Sound

362

(3)

8.3.3 Dropping Calls

365

(2)

8.3.4 The NAT/Firewall Problem

367

(5)

8.3.5 Long Call-Setup Delay

372

(2)

8.3.6 One-Way Voice-Quality Problem

374

(2)

8.3.7 WiFi Cochannel Interference

376

(1)

8.4 Assurance Methodology

377

(7)

8.4.1 Assurance Process

377

(1)

8.4.2 Assurance Flows

378

(6)

8.5 Operator's Assurance Process for VoWiFi/3G Service

384

(5)

8.5.1 Traditional Operations Assurance Process

384

(2)

8.5.2 New Desirable Operations Features

386

(3)

8.6 Targeted Architecture Supporting Advanced Service Assurance Operations

389

(7)

8.6.1 VoWiFi/3G Reference Scenario

389

(2)

8.6.2 Targeted Assurance OSS Architecture

391

(5)

8.7 The Future of VoWiFi/3G Operations

396

(1)

References

397

(2)

Chapter 9 Conclusions

399

(4)

Acronyms and Abbreviations

403

(4)

About the Authors

407

(2)

Index

409

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Service Assurance for Voice over Wifi And 3g Networks

Summary

Author Biography

Table of Contents

Supplemental Materials