An adaptive error control approach for reliable industrial automation networks

The need of developing reliable industrial automation networks has increased to a great extent due to the transmission of hard real time control packets over error prone wireless channels. This paper focuses on error control approaches to satisfy strict reliability requirements of industrial automation control applications. In this paper, some of the state of art error control approaches are critically analysed and a novel adaptive error control approach ASM-HARQ is proposed. ASM-HARQ is an adaptive HARQ approach that uses both FEC and ARQ to recover the errors present in each encoding unit which is sub-MSDU. Simulation results show that ASM-HARQ outperforms other MAC layer error control approaches through its ability to satisfy reliability requirements even for time critical applications.