A Performance Study of the Behavior of the Wake-Up Radio in Real-World Noisy Environments
Résumé
Wake-Up Radio (WuR) is a cutting-edge technology for the Internet of Things that is going to change the way end-devices communicate. Asynchronous wireless communications can benefit from WuR to reduce both energy consumption and latency comparatively to well-known duty-cycled solutions. In this article, we present an experimental platform using an existing WuR prototype and analyze its behavior when it is subject to radio interference. We implemented for the first time clear channel assessment capabilities and show that it can improve the packet delivery ratio by up to 10% on average. In particular, it can improve it from 25% up to 85% for internal interference. Besides, we experimentally extract some key physical values of this technology to provide inputs for WuR-based simulations and analytical models. Finally, we analyze the overall current consumption of a simple application to gain new insights into the WuR behavior. In low traffic scenarios, our results show that optimizing further the communication protocol stack will not significantly increase the lifetime of end-devices.
Origine : Fichiers produits par l'(les) auteur(s)