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Policy-based management was promoted as a solution to provide flexibility to dynamically assign network resources, control QoS and security, by means of administratively specified rules. Reality has showed that policy is a methodology hard to implement and has not yet been widespread used. In addition to policy conflict analysis, a key issue for this reticence is the need to derive enforceable policies from high-level administrative directives, namely the policy refinement problem. This book provides a holistic view of this process, from formal analysis to its practical realization, identifying the key elements involved in each step of such critical process. For instance this book proposes a refinement framework and advances the state of the art providing a methodology to address policy refinement in network management contexts. Finally, taking intra-domain Quality of Service Management as background domain this book presents the execution of a complete refinement process in an affordable manner. This book should help policy designers and practitioners to address the refinement problem in different application domains of Communications, Informatics and Economical Management.

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Javier Rubio-Loyola is a Visiting Professor in Universitat Pompeu Fabra and a Research Collaborator in Universitat Politècnica de Catalunya. He holds a PhD in Telecommunications from UPC. Dr. Loyola has contributed to Spanish and IST-European projects. His research interests focus on network management, autonomic networking, and service engineering.

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