Projects per year
The introduction of the Wi-Fi 6E standard operating in the 6 GHz frequency band is a serious threat for IoT systems based on ultra-wideband technology, as they share portions of the same spectrum. Wi-Fi 6E devices can in fact support channel bandwidths up to 160 MHz and operate at a much higher transmission power compared to ultra-wideband devices, which may lead to severe coexitence issues and degraded performance. However, whether and to which extent the performance of ultra-wide band systems worsens due to Wi-Fi 6E interference has not been investigated in detail yet. In this paper, we fill this gap and study how Wi-Fi 6E traffic affects ultra-wideband performance. Our experiments on a large-scale testbed demonstrate that Wi-Fi 6E transmissions may largely disrupt ultra-wideband communications and decrease the accuracy as well as the precision of ranging measurements, with significant consequences on the efficiency of localization systems. We investigate in detail the root causes for the degraded performance and derive empirical observations that can be used to design countermeasures mitigating the impact of Wi-Fi 6E interference. These include, among others, an optimal selection of physical layer settings, as well as the use of a tight synchronization to prevent a false detection of Wi-Fi 6E traffic as ultra-wide band frames and an overshooting of the radio's automatic gain control. We further devise a technique to detect the presence of Wi-Fi 6E traffic and postpone ultra-wideband transmissions accordingly. Our experiments demonstrate that these countermeasures effectively mitigate the impact of Wi-Fi 6E interference on the performance of ultra-wide band systems.
|Title of host publication||Proceedings of the 21st International Conference on Information Processing in Sensor Networks (IPSN)|
|Number of pages||13|
|Publication status||Published - 4 May 2022|
|Event||21th ACM/IEEE International Conference on Information Processing in Sensor Networks: IPSN 2022 - Milano, Virtuell, Italy|
Duration: 4 May 2022 → 6 May 2022
|Name||Proceedings - 21st ACM/IEEE International Conference on Information Processing in Sensor Networks, IPSN 2022|
|Conference||21th ACM/IEEE International Conference on Information Processing in Sensor Networks|
|Abbreviated title||IPSN 2022|
|Period||4/05/22 → 6/05/22|
ASJC Scopus subject areas
- Information Systems and Management
- Information Systems
- Hardware and Architecture
- Computer Networks and Communications
Fields of Expertise
- Information, Communication & Computing
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TRANSACT - Transform safety-critical cyber-physical systems into distributed solutions for end-users and partners
Salomon, E., Boano, C. A. & Römer, K. U.
1/06/21 → 31/05/24
Project: Research project
Networked Embedded Systems
Boano, C. A., Römer, K. U., Schuß, M., Spörk, M., Cao, N., Saukh, O., Hofmann, R., Happ Botler, L., Stocker, M., Entezari, R., Schuh, M. P., Papst, F., Salomon, E., Brunner, H., Gallacher, M., Deo, S. P., Mohamed Hydher, M. H., Wang, D., Corti, F. & Krisper, M.
1/09/13 → …
Project: Research area
Dependable Internet of Things
Boano, C. A., Kubin, G., Bloem, R., Horn, M., Pernkopf, F., Zakany, N., Mangard, S., Witrisal, K., Römer, K. U., Aichernig, B., Bösch, W., Baunach, M. C., Tappler, M., Malenko, M., Weiser, S., Eichlseder, M., Leitinger, E., Grosinger, J., Großwindhager, B., Ebrahimi, M., Alothman Alterkawi, A. B., Knoll, C., Teschl, R., Saukh, O., Rath, M., Steinberger, M., Steinbauer-Wagner, G. & Tranninger, M.
1/01/16 → 31/03/22
Project: Research project
Understanding and Mitigating the Impact of Wi-Fi 6E Interference on Ultra-Wideband Communications and Ranging
Hannah Brunner (Speaker)4 May 2022
Activity: Talk or presentation › Talk at conference or symposium › Science to science
21th ACM/IEEE International Conference on Information Processing in Sensor Networks
Carlo Alberto Boano (Participant)4 May 2022 → 6 May 2022
Activity: Participation in or organisation of › Conference or symposium (Participation in/Organisation of)