Voice over IP in Wireless Heterogeneous Networks

Signaling, Mobility and Security
(226 Seiten)
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Hanane Fathi
532 g
243x163x25 mm
Signals and Communication Technology

The focus of this book is on mechanisms that affect the VoIP user satisfaction while not explicitly involved in the media session. The book thus investigates and proposes cross-layer techniques for realizing time-efficient control mechanisms for VoIP.
The specific focus of this book is on mechanisms that affect the VoIP user satisfaction while not explicitly involved in the media session (i.e. the coded speech). This relates to the extra delays introduced by the security and the signaling protocols used to set up an authorized VoIP session and to the disruption caused by the user mobility that may take place during the session. This book thus investigates and proposes techniques for realizing time-efficient control mechanisms for VoIP. One important aspect within this book is the use of correlated error processes or random error processes or both to model the FER in the channel in order to evaluate the delays incurred by control mechanisms in different error situations.
About Authors. Acknowledgements. Preface. 1 Introduction. 1.1 Quality of Experience: Signalling, Mobility and Security. 1.2 Challenges due to the Wireless Link. 1.3 Book Outline. References. 2 IP-based Wireless Heterogeneous Networks. 2.1 Introduction. 2.2 IEEE 802.11 Wireless Local Area Networks. 2.3 IEEE 802.16 Wireless Metropolitan Area Networks. 2.4 3GPP Cellular Systems. 2.5 Integration of WLAN, WMAN and GPRS/UMTS. 2.6 The IP-based Multimedia Subsystem. References. 3 Voice over Internet Protocol. 3.1 Requirements. 3.2 Media Session. 3.3 Signalling Protocols for VoIP. 3.4 VoIP Session Setup in the IMS. References. 4 Models for Performance Analysis in Wireless Networks. 4.1 Introduction. 4.2 Analytical Model for Random Error Process. 4.3 Analytical Model for Correlated Error Process. References. 5 Impact of Security on Real-time Services: Link Layer Authentication Delay in WLAN 802.11b. 5.1 Introduction. 5.2 Security Properties. 5.3 Cryptographic Primitives. 5.4 WLAN 802.11b Security. 5.5 Security Analysis of Link Layer Authentication Protocols. 5.6 Link Layer Authentication Delay Analysis. 5.7 Evaluation of Link Layer Authentication Delay. 5.8 Concluding remarks. References. 6 Impact of Signalling on Real-time Services: SIP Session Setup Delay. 6.1 Introduction. 6.2 SIP Reliability Mechanisms. 6.3 Session Setup Delay. 6.4 Evaluation of SIP Session Setup Delay over Random Error Channels. 6.5 Evaluation of SIP Session Setup Delay over Correlated Fading Channels. 6.6 Optimization of SIP Session Setup Delay. 6.7 Concluding remarks. References. 7 Impact of Mobility on Real-time Services: Handover Delay. 7.1 Introduction. 7.2 Network Layer Mobility Protocols. 7.3 Reliability Mechanisms for Mobile IP-based Protocols. 7.4 Analysis and Optimization of Handover Delay for MIP-based Protocols. 7.5 Results of Handover Delay. 7.6 Concluding remarks.References. 8 Coupling Mobility and Security. 8.1 Introduction. 8.2 Mobile IPv6 Security. 8.3 Leakage-Resilient Authenticated Key Establishment Protocol based on RSA. 8.4 Leakage-Resilient Security Architecture proposal for MIPv6. 8.5 Analysis of Handover Delay for Proposed Architecture. 8.6 Security Analysis. 8.7 Results for Handover Delay. 8.8 Concluding remarks. References. 9 Towards Quality of Experience and Future Perspectives. 9.1 Towards Quality of Experience. 9.2 Future Perspectives. References. Index.
karmano hy api boddhavyam boddhavyam ca vikarmanah akarmanas ca boddhavyam gahana karmano gatih The intricacies of action are very hard to understand. Therefore one should know properly what action is, what forbidden action is, and what inaction is. The Bhagvad Gita (4.17) This book is the outcome of the research contribution of Hanane Fathi towards her Ph.D. studies jointly with Shyam S. Chakraborty and Ramjee Prasad as - pervisors. To the best of the authors knowledge, this is a ?rst book on voice over Internet protocol (VoIP) covering such a broad perspective as illustrated in Figure P.1. This book is a new, forward-looking resource that explores the present and future trends of VoIP in the wireless heterogeneous networks. This book also provides the discovery path that these network infrastructures are following from a perspective of synergies with the present systems and how they will pave the way for future systems. This book is intended for everyone in the ?eld of wireless information and multimedia communications. It provides different levels of material suitable for managers, researchers, network providers, and graduate students. We hope that all readers will experience the bene?ts and power of this knowledge. We have tried our best to make each chapter comprehensive and we cannot claim that this book is without errors. Any remarks to improve the text and correct the errors would be highly appreciated.

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