DR-IS: Dynamic Response Incremental Scheduling in Time-Sensitive Network

Time-Sensitive Network (TSN) with deterministic transmission capability is increasingly used in many emerging fields. It mainly guarantees the Quality of Service (QoS) of applications with strict requirements on time and security. One of the core features of TSN is traffic scheduling with bounded low delay in the network. However, traffic scheduling schemes in TSN are usually synthesized offline and lack dynamism. To implement incremental scheduling of newly arrived traffic in TSN, we propose a Dynamic Response Incremental Scheduling (DR-IS) method for time-sensitive traffic and deploy it on a software-defined time-sensitive network architecture. Under the premise of meeting the traffic scheduling requirements, we adopt two modes, traffic shift and traffic exchange, to dynamically adjust the time slot injection position of the traffic in the original scheme, and determine the sending offset time of the new time-sensitive traffic to minimize the global traffic transmission jitter. The evaluation results show that DRIS method can effectively control the large increase of traffic transmission jitter in incremental scheduling without affecting the transmission delay, thus realizing the dynamic incremental scheduling of time-sensitive traffic in TSN.