Adaptive Channel Allocation for Wi-Fi HaLow Networks

The Restricted Access Window (RAW) introduced in IEEE 802.11ah (marketed as Wi-Fi HaLow) is a key feature to address large-scale and dense IoT applications, where stations (STAs) are split into groups and access the channel periodically. In this work, we propose an Adaptive Channel Allocation (ACA) scheme for the RAW mechanism given the assigned STAs, their load, and their locations. Our proposal yields the successful delivery of all STAs’ packets with an improvement in channel usage of up to 80%.