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Full Description
IMS Multimedia Telephony service has been standardized in 3GPP as the replacement of the circuit switched telephony service in cellular networks. The multimedia telephony service consists of several service components such as voice, video and text. 'IMS Multimedia Telephony over Cellular Systems' provides a comprehensive overview of the service that will enable enriched telephony for mobile users. Enriched telephony fulfils the user's desire to communicate in new ways, for example by sharing pictures and video clips. In addition to an overview of the Multimedia Telephony service, the book focuses on the modern media processing methods, which allows the quality of the packet switched voice and video telephony not only to match but also possibly exceed the quality of circuit switched telephony. Such key components as adaptive jitter buffering and adaptation of conversational media are explained in detail.
Key features:
Detailed description of how Multimedia Telephony sessions are set-up and controlled
Analysis showing the capacity and quality of VoIP and Multimedia Telephony in cellular networks
Coverage of other IMS services such as PoC specified by 3GPP and OMA
Description of suitable QoS and radio bearers for Multimedia Telephony
Explanation of the modern radio interface, especially High Speed Packet Access, which is based on concepts such as link adaptation and fast hybrid ARQ
The possibilities for the current and future standards covered in this book make it an indispensable resource for engineers, designers and researchers in VoIP, telecommunication companies and universities teaching and conducting research in telecommunications. It will also be of interest to managers needing an in-depth knowledge of the engineering and key issues of this complex technology, and students aspiring to develop a career in this area.
Contents
Preface xi
Acknowledgments xix
Glossary xxi
1 Introduction 1
Shyam Chakraborty, Tomas Frankkila
2 The Multimedia Telephony Communication Service 7
Daniel Enstrom, Krister Svanbro, Per Synnergren ¨
3 Network Architecture and Service Realization 27
Gonzalo Camarillo, Shyam Chakraborty, Janne Peisa, Per Synnergren
4 Session Control 67
Gonzalo Camarillo, Per Synnergren
5 Media Flow 115
Daniel Enstrom, Tomas Frankkila, Per Frojdh, Janne Peisa, Krister Svanbro ¨
6 Security 209
Rolf Blom, Yi Cheng, Vesa Lehtovirta, Karl Norrman, Goran Schultz ¨
7 Performance 221
Tomas Frankkila, Janne Peisa, Per Synnergren
8 Other IMS Communication Services 273
Per Synnergren
9 Summary 301
Per Synnergren, Janne Peisa
Appendix Additional Simulation Results 307
References 317
Index 331
