Combining Static and Dynamic Traffic with Delay Guarantees in Time-Sensitive Networking

TL;DR

This paper presents a novel approach combining static and dynamic traffic management with delay guarantees in Time-Sensitive Networking, enhancing network flexibility and performance through a hybrid resource allocation method.

Contribution

It introduces a combined offline and online resource allocation method for delay guarantees in Ethernet networks, validated with delay analysis and improved algorithms.

Findings

Significant improvements in delay guarantees and runtime performance.

Enhanced network flexibility with minimal user input.

Effective combination of offline heuristics and online admission control.

Abstract

To support reliable and low-latency communication, Time-Sensitive Networking introduced protocols and interfaces for resource allocation in Ethernet. However, the implementation of these allocation algorithms has not yet been covered by the standards. Our work focuses on deadline-guaranteeing resource allocation for networks with static and dynamic traffic. To achieve this, we combine offline network optimization heuristics with online admission control and, thus, allow for new flow registrations while the network is running. We demonstrate our solution on Credit-Based Shaper networks by using the delay analysis framework Network Calculus. We compare our approach with an intuitive and a brute-force algorithm, where we can achieve significant improvements, both, in terms of quality and runtime. Thereby, our results show that we can guarantee maximum end-to-end delays and also increase the flexibility of the network while requiring only minimal user input.