Non-Periodic and Multi-Route Scheduling for Asynchronous Traffic in 5G-TSN Networks

The integration of 5G and Time-Sensitive Networking (TSN) is a hot topic for Industrial 4.0 but faces the challenge that the end-to-end transmission may experience huge jitter due to the inadaptation of the two systems. The asynchronous access mechanism (AAM) and the asynchronous traffic scheduling model (ATSM) have been proposed to solve this problem. However, periodic resources and fixed-route scheduling used by the ATSM limit the solution space of scheduling. In this paper, we propose an extended scheduling model named the NPMR-ATSM for asynchronous traffic in 5G-TSN networks, which introduces non-periodic resources and multi-route scheduling to the ATSM to extend the solution space with better schedulability. Experiments show that the NPMR-ATSM could significantly improve traffic schedulability compared to the ATSM.