Proceedings of International Conference on Applied Innovation in IT
2019/03/06, Volume 7, Issue 1, pp.1-6
Evaluation of the Time-Aware Priority Queueing Discipline with Regard to Time-Sensitive Networking in Particular IEEE 802.1Qbv
Manish Kumar, Martin Boehm, Jannis Ohms, Oleksandr Shulha, Olaf Gebauer
Abstract: Within the evolvement of Industry 4.0, the need for flexible real-time communication technologies emerges. Time-Sensitive Networking enables deterministic communication in IEEE 802 networks. The Time-Sensitive Networking Working Group published a set of standards whose implementation is in progress. IEEE 802.1Qbv standard introduces the concept of Time-Aware Shaping (TAS). TAS enables determinism by dividing traffic in different preconfigured time-slots configured in a Gate-Control-Lists (GCL). Intel recently released a time-aware scheduler based on the IEEE 802.1Qbv standard. This paper investigates Intel’s implementation. In order to test the scheduler a testbed is created. The scheduler is configured to filter and group different types of incoming packets in queues. The packets are transmitted in accordance to the configured GCL. Ingress and Egress traffic of the scheduler are analyzed in accordance to the configured time-slots. The results show, that packets which are arriving outside of their respective time-slot are buffered and transmitted in the beginning of their time-slots. It shows that no traffic interfered with the incorrect time-slots.
Keywords: TSN, Industry 4.0, Scheduling, Real-Time, QoS, M2M
- N. G. Nayak, F. Dürr, and K. Rothermel, “Routing algorithms for IEEE802.1Qbv networks,” ACM SIGBED Review, no. 15(3), pp. 13-18, 2018.
- J. Vila-Carbó, J. Tur-Masanet, and E. Hernandez-Orallo, “An evaluation of switched ethernet and Linux traffic control for real-time transmission,” IEEE International Conference on Emerging Technologies and Factory Automation, 2008, pp. 400-407.
- S. S. Craciunas, R. S. Oliver, M. Chmelík, and W. Steiner, “Scheduling real-time communication in IEEE 802.1 Qbv time sensitive networks,” In Proceedings of the 24th International Conference on Real-Time Networks and Systems, ACM, 2016, pp. 183-192.
- T. Mizrahi, E. Saat, and Y. Moses, “Timed consistent network updates in software-defined networks,” IEEE/ACM Transactions on Networking, no. 24(6), pp. 3412-3425, 2016.
- C. S. V. Gutiérrez, L. U. S. Juan, I. Z. Ugarte, and V. M. Vilches, “Real-time Linux communications: an evaluation of the Linux communication stack for real-time robotic applications,” arXiv preprint arXiv: 1808.10821, 2018.
- M. Böhm, J. Ohms, O. Gebauer, and D. Wermser, “Architectural design of a TSN to SDN gateway in the context of industry 4.0,” 23. VDE/ITG Fachtagung Mobilkommunikation - Technologien und Anwendungen, 2018.
- IEEE 802.1Qbv, IEEE Standard for Local and metropolitan area networks - Bridges and Bridged Networks - Amendment 25: Enhancements for Scheduled Traffic, 2016.
- IEEE 802.1Qcc, IEEE Draft Standard for Local and metropolitan area networks - Media Access Control (MAC) Bridges and Virtual Bridged Local Area Networks Amendment: Stream Reservation Protocol (SRP) Enhancements and Performance Improvements, 2017.
- IEEE 802.1Qcp, IEEE Standard for Local and metropolitan area networks - Bridges and Bridged. Networks - Amendment 30: YANG Data Model, 2018.
- IEEE 802.1Qbu, IEEE Standard for Local and metropolitan area networks - Bridges and Bridged. Networks - Amendment 26: Frame Preemption, 2016. Proc. of the 7th International Conference on Applied Innovations in IT, (ICAIIT), March 2019