EAPS: Edge-Assisted Predictive Sleep Scheduling for 802.11 IoT Stations
Jaykumar Sheth, Cyrus Miremadi, Amir Dezfouli, and Behnam Dezfouli

TL;DR
This paper introduces EAPS, a machine learning-based sleep scheduling mechanism for WiFi IoT devices that significantly reduces energy consumption while maintaining low latency, outperforming traditional methods like PSM and APSD.
Contribution
The paper presents a novel edge-assisted predictive sleep scheduling mechanism that leverages machine learning to optimize IoT station sleep times in WiFi networks.
Findings
EAPS reduces IoT station energy consumption to levels comparable with PSM.
EAPS maintains low packet delivery delay close to always-on stations.
The approach effectively adapts to real-world traffic patterns.
Abstract
The broad deployment of 802.11 (a.k.a., WiFi) access points and significant enhancement of the energy efficiency of these wireless transceivers has resulted in increasing interest in building 802.11-based IoT systems. Unfortunately, the main energy efficiency mechanisms of 802.11, namely PSM and APSD, fall short when used in IoT applications. PSM increases latency and intensifies channel access contention after each beacon instance, and APSD does not inform stations about when they need to wake up to receive their downlink packets. In this paper, we present a new mechanism---edge-assisted predictive sleep scheduling (EAPS)---to adjust the sleep duration of stations while they expect downlink packets. We first implement a Linux-based access point that enables us to collect parameters affecting communication latency. Using this access point, we build a testbed that, in addition to…
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