Reliable Routing of Time-Triggered Traffic in Time Sensitive Networks

Abstract

With the continuous evolution of industrial network technology, industrial production has higher and higher requirements for reliability and real-time performance. At present Time Sensitive Networks (TSN) has become one of the evolution directions of the next generation network bearing technology. In TSN, redundancy is usually adopted to meet the reliability requirements of Time-Triggered (TT) flow. However, a large amount of bandwidth consumption caused by redundancy is also inevitable, which will directly affect the schedulability of TT flows. Therefore, this paper proposes a Genetically based Reliable Routing algorithm (GRR) based on Frame Replication and Elimination for Reliability (FRER) standard, which provides reliable and non-overlapping routes for different copies of each TT flow. It not only guarantees the reliability of the TT flow, but also increases its schedulability, so as to meet the needs of industrial applications. Through simulation experiments, compared with the existing methods, the reliability of the proposed reliable routing algorithm is improved by 2.08% on average and the schedulability is improved by 6.3% on average.