An interference based dynamic channel access algorithm for dense WLAN deployments

Abstract

One of the major challenges that Wireless Local Area Networks (WLANs) are facing is to address dense scenarios, a case that is motivated by the continuous deployment of new Access Points (APs) to cover new areas and, thus, provide higher data rates. To address this challenge, which existing protocols cannot meet, the High-Efficiency WLAN (HEW) group is currently working on a new high throughput amendment named IEEE 802.11ax. In this paper, we introduce an Interference Based Dynamic Channel Access (IB-DCA) algorithm that enhances spatial reuse. We then evaluate our algorithm against the existing channel access algorithm as well as the Dynamic Sensitivity Control (DSC) and Adaptive Transmit Power Control (ATPC) algorithms that are proposed by the HEW group for various density WLAN scenarios.