Admission control and resource reservation framework for the OMODIS QoS framework

Abstract

In this paper, we describe our Admission Control and Resource Reservation (ACRA) framework and explain how it is integrated in the OMODIS QoS management framework. Normally, admission control and resource management is tightly integrated into the system components, which makes it difficult to manage it as part of the QoS management framework. Having ACRA as part of the QoS management framework - and not hidden in the system components - provides us with a general means to control end-to-end QoS in distributed systems. To achieve this goal, we have separated the general ACRA mechanisms from the component-specific resource model, which are specially configured for every system component. We explain how ACRA can be configured for a specific component, i.e., a tactical QoS manager for a multimedia database management system (MMDBMS) used for a distance learning scenario. Admission control and resource reservation for a MMDBMS is especially difficult, because distributed interactive multimedia applications managed by MMDBMS have to handle all types of resources in an integrated manner. © Springer-Verlag Berlin Heidelberg 2003.