Kostas Pentikousis

Home :: Short Bio :: Contact :: Publications :: Talks :: Tutorials :: Software :: Supervision

Quality of service in heterogeneous networks

Abstract—The present telecommunication environment is an amalgamation of a large number of networks, administrative domains, and different technologies. Multimedia applications, such as video conferencing and voice over IP (VoIP), require higher bandwidth, lower delays, and service continuity in addition to the demands placed by more traditional applications, such as email, web browsing, file transfer and instant messaging. Although there are several Quality of Service (QoS) frameworks, heterogeneous networks lack a widely-deployed mechanism that ensures end-to-end QoS. This tutorial contemplates the value of network overprovisioning and motivates the need for QoS for pragmatic applications. It introduces QoS mechanisms for local (802.11e) and wide (WCDMA 3G/UMTS) area wireless networks alongside more well-known Internet-based ones (Differentiated Services), surveys recent trends and discusses the path forward for QoS mechanisms. The tutorial emphasizes real-world examples, recent developments and research efforts by illustrating QoS measurement tools, QoS-aware gaming-on-demand applications, and seamless application and session continuity in heterogeneous networks. Finally, the research efforts in the EU EUREKA/ITEA Easy Wireless project are briefly described. Easy Wireless aims at allowing service continuity with managed quality of service and adaptive service provisioning for mobile users in heterogeneous network environments.

Conference web site

Tags—Networks, Mobile computing, Easy Wireless

Home :: Short Bio :: Contact :: Publications :: Talks :: Tutorials :: Software :: Supervision