Empirical Performance Evaluation of EnterpriseWi-Fi for IIoT Applications Requiring Mobility

Conference: European Wireless 2021 - 26th European Wireless Conference
11/10/2021 - 11/12/2021 at Verona, Italy

Proceedings: European Wireless 2021

Pages: 8Language: englishTyp: PDF

Fink, Andreas; Mogensen, Rasmus S.; Rodriguez, Ignacio; Karstensena, Anders (Wireless Communication Networks Section, Department of Electronic Systems, Aalborg University, Denmark)
Kolding, Troels; Pocovi, Guillermo (Nokia Bell Labs, Aalborg, Denmark)

This paper presents empirical latency measurements of enterprise-grade Wi-Fi 6 in an industrial setting with focus on handover performance. The basic mechanisms of Wi-Fi handover are evaluated along with improvements from several IEEE 802.11 amendments. Measurements are done for both idle and loaded networks using either dedicated frequency channels or frequency re-use. The benefits of using IEEE 802.11r and optimising scanning parameters are determined. It was found that optimising channel-related scanning parameters significantly reduces latency at the 99.9%-ile, whereas IEEE 802.11r shows improvements to a lesser degree on loaded networks. The observed latency values exceed the typical requirements assumed for IIoT use cases.