2026-04-13T01:06:57Zhttps://recercat.cat/oai/request

oai:recercat.cat:10230/438982025-12-22T13:34:26Zcom_2072_6col_2072_452952

00925njm 22002777a 4500 dc Barrachina Muñoz, Sergio author Wilhelmi Roca, Francesc author Bellalta, Boris author 2020-03-16T15:35:19Z 2020 In order to dynamically adapt the transmission bandwidth in wireless local area networks (WLANs), dynamic channel bonding (DCB) was introduced in IEEE 802.11n. It has been extended since then, and it is expected to be a key element in IEEE 802.11ax and future amendments such as IEEE 802.11be. While DCB is proven to be a compelling mechanism by itself, its performance is deeply tied to the primary channel selection, especially in high-density (HD) deployments, where multiple nodes contend for the spectrum. Traditionally, this primary channel selection relied on picking the most free one without any further consideration. In this letter, in contrast, we propose dynamic-wise (DyWi), a light-weight, decentralized, online primary channel selection algorithm for DCB that improves the expected WLAN throughput by considering not only the occupancy of the target primary channel but also the activity of the secondary channels. Even when assuming important delays due to primary channel switching, simulation results show a significant improvement both in terms of average delay and throughput. This work has been partially supported by the Spanish Ministry of Economy and Competitiveness under the Maria de Maeztu Units of Excellence Programme (MDM-2015-0502), by a Gift from the Cisco University Research Program (CG#890107, Towards Deterministic Channel Access in High-Density WLANs) Fund, a corporate advised fund of Silicon Valley Community Foundation, and by PGC2018099959-B-I00 (MCIU/AEI/FEDER,UE). The work done by S. BarrachinaMuñoz is supported by a FI grant from the Generalitat de Catalunya. Dynamic channel bonding Primary channel High-density WLAN Online Online primary channel selection for dynamic channel bonding in high-density WLANs