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Voice over IP in Wireless Heterogeneous Networks

Signalling, Mobility, and Security

  • Hanane Fathi
  • Shyam S. Chakraborty
  • Ramjee Prasad

Part of the Signals and Communication Technology book series (SCT)

About this book

Introduction

The convergence of different types of traffic has preceded the convergence of systems and services in a wireless heterogeneous network. Voice and data traffic are usually treated separately in both 2G and 2.5G wireless networks. With advances in packet switching technology and especially with the deployment of wireless heterogeneous systems, both speech and data traffic are carried over wireless links by the same IP-based packet-switched infrastructure. However, this combination faces some challenges due to the inherent properties of the wireless network. The requirements for good quality VoIP communications are difficult to achieve in a time-varying environment due to channel errors and traffic congestion and across different systems. The provision of VoIP in wireless heterogeneous networks requires a set of time-efficient control mechanisms to support a VoIP session with acceptable quality. The focus of Voice over IP in Wireless Heterogeneous Networks is on mechanisms that affect the VoIP user satisfaction while not explicitly involved in the media session. 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 during the session. Voice over IP in Wireless Heterogeneous Networks thus investigates and proposes cross-layer techniques for realizing time-efficient control mechanisms for VoIP: signaling, mobility and security.

Keywords

3rd Generation Wireless Systems GPRS IEEE 80 IPv6 Internet Protocol (IP) Internet Protocol Version 6 (IPv6) Mobility RSA Security Signalling UMTS Universal Mobile Telecommunications System VoIP Voice over IP (VOIP) Wireless Heterogeneous Networks

Authors and affiliations

  • Hanane Fathi
    • 1
  • Shyam S. Chakraborty
    • 2
  • Ramjee Prasad
    • 1
  1. 1.Inst. Electronic SystemsCenter for TeleInfrastruktur Aalborg University9220 AalborgDenmark
  2. 2.School of Computing & Intel. SystemsUniversity of UlsterDerry/LondonderryUK

Bibliographic information

  • DOI https://doi.org/10.1007/978-1-4020-6631-3
  • Copyright Information Springer Netherlands 2009
  • Publisher Name Springer, Dordrecht
  • eBook Packages Engineering
  • Print ISBN 978-1-4020-6630-6
  • Online ISBN 978-1-4020-6631-3
  • Series Print ISSN 1860-4862
  • Buy this book on publisher's site