Abstract

Many traditional mechanisms for QoS (Quality of Service) provisioning failed due to complexity, incompatibility to existing applications, or the need for new computer architectures. To be successful, an approach should be integrated into commercial widespread systems, simple, and controllable. This paper discusses basic problems of traditional approaches and proposes a communication system based on feedback controlled schedulers. This enables automatic adaptation to system parameters and changes in the environment. One crucial component for QoS in communication, a scheduler for data packets, will be discussed in more detail. The performance evaluation shows, that it is feasible with the proposed software approach to reach high throughput and to guarantee a broad range of QoS parameters for individual traffic flows.

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