A Scheduling Architecture for QOS and Temporal Mapping

Abstract

This paper presents the development and evaluation of a model for mapping the quality of service (QoS) requirements and traffic characteristics of aggregated IP traffic flows belonging to multiple classes of continuous media (audio and video) sources onto a single ATM virtual channel (VC) that is also shared with a number of IP data classes. This model was developed as part of a wider range of research activity focused on supporting QoS in future IP networks. The model presented in this paper offers improvements on an earlier model that used an "idealized" scheduler and was validated only for homogeneous continuous media sources. The paper discusses the improved scheduling mechanism that can minimize the effects of imperfections in cell level scheduling and presents a simulation experiment to validate the new model for aggregated heterogeneous continuous media sources