Model Management for Quality of Service Support

Quality of Service (QoS) management strategies have been first introduced in distributed multimedia systems to decide whether and controlling how multimedia streams can be delivered to the user within the given delay, cost or quality constraints. With the recent advances in the development of large-scale distributed applications where different services are provided to a large number of users, QoS management becomes and end-to-end functionality requiring the cooperation of all the system components. That leads to consider system components interoperability, management information integration and distributed execution of QoS activities. In this paper we examine modelling and meta-modelling issues for QoS management. More specifically we propose a metamodel for QoS management and we illustrate how such a meta-model is used for mapping QoS requirements to system constraints.