Implementing Service Quality in IP NetworksUpplaga 1

Why implement service quality? Is it possible to ensure reliable service quality in multi-service IP networks? Which technologies help in making end-to-end quality of service a realistic business proposition? In Implementing Service Quality in IP Networks, Vilho Räisänen answers these questions and more. The author discusses the business drivers for multi-service IP networks from various different angles. He defines service quality, explains how to estimate and measure the end-user experience and discusses different ways of conveying service quality requirements to the network. Turning theory into practice, he uses Service Level Agreements (SLAs) as a framework for discussing inter-domain management and measurement of multi-service IP networks. Bandwidth broker assisted signalling is presented as an evolutionary step towards dynamic SLAs. Finally, a case study describing service quality support in an IP-based Radio Access Network (RAN) illustrates the techniques introduced in the book. Features: *A service-centred approach to Quality of Service *A 'system solution' for end-to-end service support *An overview of QoS support technologies such as Differentiated Services (DiffServ), Multi-Protocol Label Switching (MPLS), traffic engineering, policy management, and SLAs *Management solutions for network administrators *Application in an IP-based wireless Radio Access Network A practical guide which will appeal to all network planners, managers, administrators and designers, as well as students on network management courses, this book demonstrates that implementing service quality in IP networks is a realistic business goal. "IP-based services and networks are already dominating fixed services and will do the same in mobile within a few years time. In order to improve network utilization, manage service levels for end-users and between operators QoS is absolutely necessary. This book serves not only as a tutorial but also as a reference for professionals who design and implement QoS-aware networks and applications." Markku Hollström, Nokia IP Mobility Networks, Finland