Abstract: Time sensitive networking (TSN) enables applying ethernet technology in mission-critical systems with strict delay constraints.Currently, most TSN deployed on the network is static, and TSN devices cannot respond to topology changes or dynamic changes in traffic. To solve the above problems, the theoretical end-to-end delay of time-sensitive traffic is derived by establishing a gate control list(GCL) model, and a GCL duration adaptive adjustment algorithm is further proposed. According to the IEEE 802.1Qcc standard proposed by the TSN working group, the centralized network controller module is simulated for the dynamic configuration of GCL.The centralized network controller manages the applications running on the network and detects traffic changes, and then dynamically configures the TSN equipment according to the proposed algorithm to ensure the stable and reliable transmission of time-sensitive services when the traffic changes. The simulation results show that, the GCL adaptive adjustment algorithm has more than doubled average delay satisfaction rate of time-sensitive flows compared with the static TSN configuration.

Key words: time-sensitive network, gate control list, central network controller