Traffic-aware message scheduling method for ISA100.11a

Abstract

This paper proposes a new message scheduling method on shared timeslots of ISA100.11a to enhance real-time performance, called Traffic-Aware Message Scheduling (TAMS) method. Instead of competing to transmit sporadic messages in consecutive cycles, end-nodes are divided into parts, and then access the channel in the specific cycles when the probability of timeslots getting involved in collision exceeds a threshold. The simulation results indicate that the proposed method provides performance improvements in terms of throughput and end-to-end delay.