Delay-Guaranteeing Admission Control for Time-Sensitive Networking using the Credit-Based Shaper

Maile L, Hielscher KS, German R (2022)


Publication Type: Journal article

Publication year: 2022

Journal

Original Authors: Lisa Maile, Kai-Steffen Hielscher, Reinhard German

Pages Range: 1-1

DOI: 10.1109/OJCOMS.2022.3212939

Abstract

With real-time communication being a key part of the fourth industrial revolution, the need for Quality of Service (QoS) in industrial networks is gaining increasing importance. Time-Sensitive Networking (TSN) faces this need, for example, by introducing new scheduling mechanisms. The Credit-Based Shaper (CBS) has been introduced to TSN to offer low delays for multiple traffic classes by applying rate limitations. Currently, flows are reserved decentrally in CBS networks using a Stream Reservation Protocol (SRP). In contrast, the new TSN standard IEEE 802.1Qcc allows for a centralized architecture to favor short reconfiguration latencies. However, no online admission control scheme which offers safe delay bounds has been proposed for this central architecture. To close this gap, we propose two models for admission control in TSN networks using CBS. Both models offer deadline-guaranteeing flow allocation, including routing and prioritization of flows, and configure forwarding devices while eliminating packet loss. Our models utilize the mathematical framework of Network Calculus to calculate worst-case flow delays and buffer sizes. We show how our models allow for more reservations than the decentralized standard approach by improved resource utilization. We validate our models both in synthetic and industrial network scenarios. Additionally, we compare the effects and parameters of our two models, providing guidance on when to choose them.

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APA:

Maile, L., Hielscher, K.-S., & German, R. (2022). Delay-Guaranteeing Admission Control for Time-Sensitive Networking using the Credit-Based Shaper. IEEE Open Journal of the Communications Society, 1-1. https://dx.doi.org/10.1109/OJCOMS.2022.3212939

MLA:

Maile, Lisa, Kai-Steffen Hielscher, and Reinhard German. "Delay-Guaranteeing Admission Control for Time-Sensitive Networking using the Credit-Based Shaper." IEEE Open Journal of the Communications Society (2022): 1-1.

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