8 research outputs found
Management of service composition based on self-controlled components
Get PDFInternational audienceCloud computing and Future Internet promise a new ecosystem where everything is "as a service", reachable and connectable anywhere and anytime, everyone succeeding to get a service composition that meets his needs. But do we have the structure and the appropriate properties to design the service components and do we have the means to manage, at run-time, the personalised compositions corresponding to Service Level Agreement? In this article we introduce an entity of service composition called Self-Controlled Component (SCC), including, since the design step, functional and non-functional specifications. SCCs benefit both from the strong structure, explicit composition, and autonomic management of component-oriented programming, from the highly dynamic composition, and from the discovery capacities of service-oriented computing. Self-control mechanisms are then attached automatically to SCCs to enable autonomic application management during execution. The objective of this new concept is to provide strong Quality of Service (QoS) guarantees of composed applications. We illustrate the approach using an example called Springoo, to how in the context of a legacy application the contributions and benefits of our solution. For the management of the service composition we propose the concept of Virtual Private Service Network (VPSN) and Virtual Service Community (VSC) that allows us to model the personalised Service Level Agreement (SLA) where user requirements and provider offers converge on a QoS contract
Gestion Dynamique de Service de Bout en Bout dans un Contexte de Mobilité et d'Ubiquité : du Déploiement au Delivery des services
No full textThe increased competition and customer demands for more innovative and reliable services lead the operator to accelerate the renewal of its service portfolio and want to stay ahead of competitors in their marketing. But in the new NGN/NGS context where the user is nomad, change his terminal, his environment and want a service continuity whatever his location and his preferences, the provision of services from strategy to operations becomes increasingly complex and long to control. Thus, having a dynamic management that improves the TTM and the ROI becomes a challenge for operators. In this thesis, we focus on solving the problems of service lifecycle management from deployment to delivery in ubiquitous and mobile environment. To do this, at first, we start by reviewing existing works in service lifecycle management, and then we identify more precisely the needs of the new NGN/NGS context from a user and operator perspective. Locks to rise concern the different service lifecycle phases and how to rethink theses phases in order to have service continuity and QoS maintenance in this mobile and ubiquitous context. Our contributions are four in number and concern the deployment, provisioning delivery and assurance phases.Two application domains are directly impacted by our proposals and can enhance our work. The first is derived from the user session mobility management by the QoS. The second scope is the standard telecom and especially business processes.L'intensification de la concurrence et les exigences des clients pour des services toujours plus innovants et fiables conduisent l'opérateur à accélérer le renouvellement de son portefeuille de services et à vouloir devancer ses concurrents dans leur mise sur le marché. Mais dans le nouveau contexte NGN/NGS où l'utilisateur est nomade, change de terminal, change d'environnement et désire une continuité de service en tout lieu et selon ses préférences, la fourniture de services depuis la stratégie jusqu'à l'exploitation devient de plus en plus complexe et longue à maîtriser. Ainsi, avoir une gestion dynamique qui permet d'améliorer le TTM et le ROI devient un challenge pour les opérateurs. Dans cette thèse, nous nous intéressons à la résolution de problèmes de gestion du cycle de vie des services depuis le Déploiement jusqu'au Delivery dans un environnement ubiquitaire et mobile. Pour ce faire, dans un premier temps, nous commençons par analyser les travaux existants en termes de gestion du cycle de vie des services, puis nous identifions plus précisément les besoins du nouveau contexte NGN/NGS du point de vue de l'utilisateur et de l'opérateur. Les verrous à lever concernent les différentes phases du cycle de vie des services. Comment les repenser afin d'avoir une continuité de service et un maintien de la QoS dans ce contexte de mobilité et d'ubiquité. Nos contributions sont au nombre de quatre et concerne le Déploiement, le Provisioning, le Delivery et l'Assurance des services. Deux champs d'application sont directement impactés par nos propositions et permettent de valoriser nos travaux. Le premier se déduit de la gestion de la mobilité de la session de l'utilisateur par la QoS. Le deuxième est les standards télécom et plus particulièrement les processus business
