A Symmetric MAC Protocol for CSMA Busses in Dynamic Distributed Real-time Systems
نویسندگان
چکیده
By using a hybrid scheduling algorithm consisting of static offline scheduling and dynamic online scheduling, hard deadlines can be guaranteed, while achieving optimal resource utilization by soft real-time activities. This paper introduces a medium access control (MAC) protocol for a CSMA bus, which supports the hybrid scheduling of hard and soft real-time messages on the bus. The key issues considered here, are distinguishing hard and soft real-time constraints, achieving high resource utilization, and avoiding single points of failure by a symmetric distributed medium access control scheme.
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