Adaptive channel quality estimation method for enhanced time slotted channel hopping on wireless sensor networks

Abstract

As IoT emerges, energy consumption becomes important. ETSCH introduces whitelisting high-quality channels in TSCH and channel list for Enhanced Beacons, to improve reliability under dynamic interference. However, it is difficult to extend ETSCH to multi-hop network because energy consumption of energy-detecting nodes is larger than that of other nodes. In this paper, we propose Adaptive Channel Quality Estimation (A-CQE), which controls frequency of energy detections depending on Interference Dynamicity that are proposed to determine whether interference is dynamic or not. Experiments show ETSCH with A-CQE improves on average 10.1% in terms of energy consumption without lowering reliability compared with ETSCH.