System engineering for IMS networks

The IMS is the foundation architecture for the next generation of mobile phones, wireless-enabled PDAs, PCs, and the like. IMS delivers multimedia content (audio, video, text, etc.) over all types of networks. For network engineers/administrators and telecommunications engineers it will be essential to not only understand IMS architecture, but to also be able to apply it at every stage of the network design process.

This book will contain pragmatic information on how to engineer IMS networks as well as an applications-oriented approach for the engineering and networking professionals responsible for making IMS function in the real world.

List of Figures	p. ix
List of Tables	p. xiii
Preface	p. xv
Acknowledgements	p. xxi
Chapter 1 Introduction to IMS	p. 1
1.1 What is IMS?	p. 1
1.2 A First Look at IMS	p. 7
1.3 The IMS Architecture	p. 9
1.4 Chapter Summary	p. 23
Chapter 2 Basics of Wireless Networks	p. 25
2.1 The Centralized Model of Wireless Telecom Networks	p. 25
2.2 The RAN and the Core Network	p. 26
2.3 Concept of the Control Plane and User Plane	p. 27
2.4 Functions of the Core Network	p. 28
2.5 Subscriber Identity and Management	p. 29
2.6 Mobility and Roaming	p. 29
2.7 Charging and Billing	p. 30
2.8 Service Delivery	p. 31
2.9 Network Management	p. 32
2.10 Chapter Summary	p. 33
Chapter 3 Basics of IP Networks	p. 35
3.1 IP from an IMS perspective	p. 35
3.2 Addressing	p. 36
3.3 IPv4/IPv6	p. 38
3.4 Routing	p. 40
3.5 Trusted Networks	p. 40
3.6 NAT/Firewall Traversal -- Session Border Control	p. 41
3.7 Chapter Summary	p. 43
Chapter 4 The IMS-related Protocols	p. 45
4.1 Transport Protocols	p. 46
4.2 Session Protocols	p. 46
4.3 AAA Protocol -- Diameter	p. 59
4.4 Media Protocols	p. 67
4.5 IP Access and Addressing	p. 75
4.6 Security	p. 84
4.7 QoS	p. 89
4.8 Application	p. 91
4.9 Chapter Summary	p. 92
Chapter 5 Principles of Operation	p. 95
5.1 Subscriber Identities and Addressing	p. 95
5.2 Subscription in IMS	p. 100
5.3 Authentication and Authorization	p. 103
5.4 Session Control	p. 112
5.5 Charging and Billing	p. 116
5.6 Policy and QoS	p. 120
5.7 The Service Plane	p. 124
5.8 Service Orchestration and the SCIM	p. 129
5.9 The Media Plane	p. 134
5.10 Security	p. 136
5.11 Chapter Summary	p. 139
Chapter 6 Putting it All Together	p. 141
6.1 UE IP Connectivity	p. 141
6.2 UE Registration and Deregistration	p. 144
6.3 Session Scenarios	p. 148
6.4 Chapter Summary	p. 165
Chapter 7 Services Delivered by IMS	p. 167
7.1 Converged Services	p. 167
7.2 Next-Gen Consumer Services	p. 170
7.3 Enterprise Services	p. 199
7.4 Blended Services	p. 206
7.5 Emergency Services	p. 216
7.6 Chapter Summary	p. 218
Chapter 8 The Promise of Convergence	p. 219
8.1 Converging IMS with Other Networks	p. 219
8.2 Service Convergence	p. 232
8.3 IMS and Web 2.0	p. 241
8.4 Chapter Summary	p. 243
Chapter 9 Implementing IMS Functional Elements	p. 245
9.1 The Network Itself	p. 245
9.2 Implementing UE Applications/IMS Clients	p. 247
9.3 Implementing Core Network Elements	p. 250
9.4 Implementing Application Servers	p. 265
9.5 Managing the IMS Network	p. 268
9.6 Chapter Summary	p. 273
Chapter 10 Epilogue: Future Directions for IMS	p. 275
10.1 Innovation Beyond Standards	p. 276
10.2 The Promise and the Wait	p. 276
Appendix A Performance of IMS Networks	p. 279
References and Further Reading	p. 291
Index	p. 311

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