The 3G IP Multimedia Subsystem (IMS): Merging the Internet and the Cellular Worlds, 2/e

Description

The 3G IP Multimedia Subsystem (IMS): Merging the Internet and the Cellular Worlds, Second Edition is an updated version of the best-selling guide to this exciting technology that will merge the Internet with the cellular world, ensuring the availability of Internet technologies such as the web, email, instant messaging, presence and videoconferencing nearly everywhere.

In this thoroughly revised overview of the IMS and its technologies, goals, history, vision, the organizations involved in its standardization and architecture, the authors first describe how each technology works on the Internet and then explain how the same technology is adapted to work in the IMS, enabling readers to take advantage of any current and future Internet service.

Key features of the Second Edition include:

• New chapter on Next Generation Networks, including an overview on standardization, the architecture, and PSTN/ISDN simulation services.
• Fully updated chapter on the Push-to-talk over Cellular (PoC) service, covering the standardization in the Open Mobile Alliance (OMA), architecture, PoC sessions types, user plane, and the Talk Burst Control Protocol
• Several expanded sections, including discussion of the role of the Open Mobile Alliance in the standardization process, IPv4 support in IMS, a description of the IMS Application Layer Gateway and the Transition Gateway, and a description of the presence data model.
• Updated material on the presence service, session-based instant messages with the Message Session Relay Protocol (MSRP), and the XML Configuration Access Protocol (XCAP).
• Supported by a companion website on which instructors and lecturers can find electronic versions of the figures.

Engineers, programmers, business managers, marketing representatives, and techncially aware users will all find this to be an indispensable guide to IMS and the business model behind it.

Table of Contents

Foreword by Stephen Hayes.

Foreword by Allison Mankin and Jon Peterson.

About the Authors.

Preface to the Second Edition.

Preface to the First Edition.

Acknowledgements.

Part I: Introduction to the IMS.

1 IMS Vision: Where Do We Want to Go?.

1.1 The Internet.

1.2 The Cellular World.

1.3 Why do we need the IMS?

1.4 Relation between IMS and non-IMS Services.

2 The History of the IMS Standardization.

2.1 Relations between IMS-related Standardization Bodies.

2.2 Internet Engineering Task Force.

2.3 Third Generation Partnership Project.

2.4 Third Generation Partnership Project 2.

2.5 IETF-3GPP/3GPP2Collaboration.

2.6 Open Mobile Alliance.

3 General Principles of the IMS Architecture.

3.1 From Circuit-switched to Packet-switched.

3.2 IMS Requirements.

3.3 Overview of Protocols used in the IMS.

3.4 Overview of IMS Architecture.

3.5 Identification in the IMS.

3.6 SIM,USIM, and ISIM in 3GPP.

Part II: The Signaling Plane in the IMS.

4 Session Control on the Internet.

4.1 SIP Functionality.

4.2 SIP Entities.

4.3 Message Format.

4.4 The Start Line in SIP Responses: the Status Line.

4.5 The Start Line in SIP Requests: the Request Line.

4.6 Header Fields.

4.7 Message Body.

4.8 SIP Transactions.

4.9 Message Flow for Session Establishment.

4.10 SIP Dialogs.

4.11 Extending SIP.

4.12 Caller Preferences and User Agent Capabilities.

4.13 Reliability of Provisional Responses.

4.14 Preconditions.

4.15 Event Notification.

4.16 Signaling Compression.

4.17 Content Indirection.

4.18 The REFER Method.

5 Session Control in the IMS.

5.1 Prerequisites for Operation in the IMS.

5.2 IPv4andIPv6inthe IMS.

5.3 IP Connectivity Access Network.

5.4 P-CSCF Discovery.

5.5 IMS-level Registration.

5.6 Subscription to the reg Event State.

5.7 Basic Session Setup.

5.8 Application Servers: Providing Services to Users.

5.9 Interworking.

5.10 Emergency Sessions.

6 AAA on the Internet.

6.1 Authentication, Authorization, and Accounting.

6.2 AAA Framework on the Internet.

6.3 The Diameter Protocol.

7 AAA in the IMS.

7.1 Authentication and Authorization in the IMS.

7.2 The Cx and Dx Interfaces.

7.3 The Sh Interface.

7.4 Accounting.

7.5 Charging Architecture.

7.6 Offline Charging.

7.7 Online Charging.

8 Security on the Internet.

8.1 HTTP Digest.

8.2 Certificates.

8.3 TLS.

8.4 S/MIME.

8.5 Authenticated Identity Body.

8.6 IPsec.

8.7 Privacy.

8.8 Encrypting Media Streams.

9 Security in the IMS.

9.1 Access Security.

9.2 Network Security.

10 Policy on the Internet.

10.1 The COPS Protocol.

10.2 The Outsourcing Model.

10.3 The Configuration Model.

11 Policy in the IMS.

11.1 SIP Procedures.

11.2 Media Authorization.

11.3 Proxy Access to SDP Bodies.

11.4 Initialization Procedure.

12 Quality of Service on the Internet.

12.1 Integrated Services.

12.2 Differentiated Services.

13 Quality of Service in the IMS.

13.1 Instructions to Perform Resource Reservations.

13.2 Reservations by the Terminals.

13.3 Network Authorization.

13.4 QoS in the Network.

Part III: The Media Plane in the IMS.

14 Media Encoding.

14.1 Speech Encoding.

14.2 Video Encoding.

14.3 Text Encoding.

14.4 Mandatory Codecs in the IMS.

15 Media Transport.

15.1 Reliable Media Transport.

15.2 Unreliable Media Transport.

15.3 Media Transport in the IMS.

Part IV: Building Services with the IMS.

16 The Presence Service on the Internet.

16.1 Overview of the Presence Service.

16.2 The Presence Life Cycle.

16.3 Presence Information Data Format.

16.4 The Presence Data Model for SIP.

16.5 Mapping the SIP Presence Data Model to the PIDF.

16.6 Rich Presence Information Data Format.

16.7 CIPID.

16.8 Timed Presence Extension to the PIDF.

16.9 Presence Capabilities.

16.10 Presence Publication.

16.11 Presence Subscription and Notification.

16.12Watcher Information.

16.13 URI-list Services and Resource Lists.

16.14 XML Configuration Access Protocol.

16.15 Presence Optimizations.

17 The Presence Service in the IMS.

17.1 The Foundation of Services.

17.2 Presence Architecture in the IMS.

17.3 Watcher Subscription.

17.4 Subscription to Watcher Information.

17.5 Presence Publication.

17.6 Presence Optimizations.

17.7 The Ut Interface.

18 Instant Messaging on the Internet.

18.1 The im URI.

18.2 Modes of Instant Messages.

18.3 Pager-mode Instant Messaging.

18.4 Session-based Instant Messaging.

19 The Instant Messaging Service in the IMS.

19.1 Pager-mode Instant Messaging in the IMS.

19.2 Session-based Instant Messaging in the IMS.

20 Push-to-Talk over Cellular.

20.1 PoC Standardization.

20.2 IETF Work Relevant to PoC.

20.3 Architecture.

20.4 Registration.

20.5 PoC Server Roles.

20.6 PoC Session Types.

20.7 Adding Users to a PoC Session.

20.8 Group Advertisements.

20.9 Session Establishment Types.

20.10 Answer Modes.

20.11 Right-to-speak Indication Types.

20.12 Participant Information.

20.13 Barring and Instant Personal Alerts.

20.14 The User Plane.

20.15 Simultaneous PoC Sessions.

21 Next Generation Networks.

21.1 NGN Overview.

21.2 The Core IMS in NGN.

21.3 PSTN/ISDN Simulation Services.

Appendix A: The 3GPP2 IMS.

A.1 An Introduction to 3GPP2.

A.2 The Multimedia Domain (MMD).

A.3 Architecture of the 3GPP2IMS.

Appendix B: List of IMS-related Specifications.

B.1 Introduction.

B.2 3GPPSpecifications.

B.3 3GPP2Specifications.

B.4 ETSINGN Specifications.

References.

Index.