Aligning rTWT with 802.1Qbv: a Network Calculus Approach

TL;DR

This paper presents a network calculus-based method to derive latency bounds for time-critical traffic in shared wireless networks using 802.11 TWT and 802.1Qbv, addressing Industry 4.0 latency demands.

Contribution

It introduces a novel analytical framework combining 802.11 TWT and 802.1Qbv using network calculus to compute latency bounds in shared wireless networks.

Findings

Derived closed-form latency bounds for combined TWT and 802.1Qbv

Demonstrated effectiveness of the approach in Industry 4.0 scenarios

Provides insights for designing low-latency wireless networks

Abstract

Industry 4.0 applications impose the challenging demand of delivering packets with bounded latencies via a wireless network. This is further complicated if the network is not dedicated to the time critical application. In this paper we use network calculus analysis to derive closed form expressions of latency bounds for time critical traffic when 802.11 Target Wake Time (TWT) and 802.1Qbv work together in a shared 802.11 network.