QoS Using Delay-Synchronized Dynamic Priority Scheduling

Abstract: Controlled-Load Service that provides acceptable quality of service to adaptive real-time applications without making absolute guarantee is extensively considered, owing to its higher resource utilization than Guaranteed Service. Enhancment of utilization strongly relies on traffic scheduling method, adaptable to varying traffic load, and admission control algorithms that do not depend on worst-case traffic behavior. In this paper, we propose a new scheduling scheme called Delay-Synchronized Dynamic Priority (DSDP), which exploits node synchronization of multi-hop network by dynamically altering priority of a packet to offset the deviation from its expected arrival time. Additionally, we develop a measurement-based admission control algorithm that uses existing traffic measurements under DSDP scheme for Controlled-load service.