Abstract:
Spatial Reuse (SR) is one of the spectrum efficiency mechanisms in 802.11ax, which has the goal to maximize the parallel transmission in wireless networks. Currently, SR ...Show MoreMetadata
Abstract:
Spatial Reuse (SR) is one of the spectrum efficiency mechanisms in 802.11ax, which has the goal to maximize the parallel transmission in wireless networks. Currently, SR adopts static Overlapping Basic Service Set with Packet Detect (OBSS/PD) threshold with BSS Color to adjust the sensitivity threshold. However, adjusting the proper threshold is challenging since an improper adjustment can cause a hidden/exposed node problem, thereby decreasing the throughput. This problem is worsened in a dynamic wireless environment where nodes move in unpredictable ways. This makes it more difficult for a static approach to determine its optimal configuration. To address this problem, we proposed a dynamic OBSS/PD threshold adjustment algorithm based on Multi-Armed Bandits. Furthermore, we introduce critical movement detection to identify when a node moves into or out of an interference zone. This detection is required to assist the MAB algorithm in generating a new distribution suitable for the new environment. Our simulation results show that a dynamic adaptive agent with critical movement detection can increase simultaneous transmission and achieve higher throughput in a dynamic STA mobility scenario.
Date of Conference: 05-08 July 2022
Date Added to IEEE Xplore: 20 July 2022
ISBN Information: