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AVB-aware Routing and Scheduling for Critical Traffic in Time-sensitive Networks with Preemption
Mälardalen University.
Beihang University, Beijing, China.
TTTech Computertechnik Ag, Vienna, Austria.
Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.ORCID iD: 0000-0003-3469-1834
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2022 (English)In: ACM International Conference Proceeding Series, Association for Computing Machinery , 2022, p. 207-218Conference paper, Published paper (Refereed)
Abstract [en]

The Time-Sensitive Network (TSN) amendments and protocols add capabilities on top of standard 802.1 Ethernet for guaranteeing the timeliness of both (isochronous) scheduled traffic (ST) and shaped (audio-video) communication (AVB) in distributed applications. ST streams are guaranteed via an offline computed schedule controlling the time-aware gate mechanism of IEEE 802.1Qbv, while AVB real-time streams are shaped via a credit-based shaper (CBS) and scheduler with lower-priority than ST. Although the two traffic classes use different TSN mechanisms, they are interrelated as the ST traffic class schedule influences the latency of AVB traffic. In this paper, we propose a method for the integration of the ST schedule synthesis with an analysis for the AVB class featuring IEEE 802.1Qbu frame preemption under different configurations to reduce the interference between the two classes. We first present a new worst-case response-time (WCRT) analysis for the AVB traffic class in TSN networks with preemption, considering an arbitrary number of AVB queues and different configurations for the CBS credit behavior. Then, we integrate the creation of ST schedule tables with the schedulability analysis of AVB traffic using a heuristic algorithm featuring frame preemption and a novel routing mechanism aimed at maximizing AVB schedulability. Finally, we evaluate our approach using both real-world and synthetic use cases showing the efficiency both in terms of schedule creation runtime and in terms of increasing the schedulability of lower-priority AVB traffic.

Place, publisher, year, edition, pages
Association for Computing Machinery , 2022. p. 207-218
Keywords [en]
AVB, Network calculus., Scheduling, Time sensitive networking, Calculations, Electric circuit breakers, IEEE Standards, Network routing, Low priorities, Network calculus, Routing and scheduling, Schedulability, Scheduled traffics, Traffic class, Heuristic algorithms
National Category
Embedded Systems
Identifiers
URN: urn:nbn:se:mdh:diva-59668DOI: 10.1145/3534879.3534926ISI: 001117734100019001117734100019Scopus ID: 2-s2.0-85132396811ISBN: 9781450396509 (print)OAI: oai:DiVA.org:mdh-59668DiVA, id: diva2:1686166
Conference
30th International Conference on Real-Time Networks and Systems, RTNS 2022, 7 June 2022 through 8 June 2022
Available from: 2022-08-08 Created: 2022-08-08 Last updated: 2024-01-24Bibliographically approved

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Ashjaei, Seyed Mohammad HosseinMubeen, SaadDaneshtalab, MasoudSjödin, Mikael

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Berisa, AldinAshjaei, Seyed Mohammad HosseinMubeen, SaadDaneshtalab, MasoudSjödin, Mikael
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