Ethernet networks with deterministic delays

This article presents research on Ethernet networks with deterministic delays. The features of Time-Sensitive Networks and the key protocols contributing to time-delay-sensitive networks are considered. The principles of scheduling traffic with deterministic delays are reviewed. Determinism promotes efficient prediction of network behaviour and reduced latency as a consequence. Lack of predictability of networks increases the risk of information loss or delay, which can lead to lethal consequences. TSN that allow the use of synchronisation and the determinization of resulting delays provide an opportunity to enhance the security characteristics and resilience of hard time systems, something that Ethernet cannot fully guarantee. The cyclic scheduled traffic service algorithm we investigate allows prioritization of the traffic classes under study based on information criticality. The paper emphasizes the importance of prioritizing different traffic classes in queue scheduling. The necessity of correct synchronisation of streams and data delivery in the required time range is revealed, to ensure the reliability of production process management, based on the identification of Ethernet shortcomings.