Periodic and Aperiodic Communication Techniques for Responsive Link ∗

Responsive Link, an ISO/IEC communication standard, provides many functional capabilities for distributed real-time systems. This paper is focused on periodic and ape-riodic communication techniques for Responsive Link. In periodic communication, the priority is assigned to each packet so that the network utilization is improved. A schedu-lability test for connection establishments is also derived to ensure timing guarantees. In aperiodic communication, meanwhile, the bandwidth is reserved to improve response time as much as possible without periodic timing violations. The effectiveness of the presented techniques is demon-strated through a series of simulations.