Resumo

ARANDA, Juan; SCHOLZEL, Mario; MENDEZ, Diego  e  CARRILLO, Henry. MultiModal Wireless Sensor Networks based on Wake-up Radio Receivers: An analytical Model for Energy Consumption. Rev.fac.ing.univ. Antioquia [online]. 2019, n.91, pp.113-124. ISSN 0120-6230.  https://doi.org/10.17533/udea.redin.20190401.

Traditionally, sophisticate power-aware wake-up techniques have been employed to achieve energy efficiency in Wireless Sensor Networks (WSNs), such as low-duty cycling protocols using a single radio architecture. These protocols achieve good results regarding energy savings, but they suffer from idle-listening and overhearing issues, that make them not reliable for most ultra-low power demanding applications, especially, those deployed in hostile and unattended environments. Currently, Wake-up Radio Receivers (WuRx) based protocols, under a dual-radio architecture and always-on operation, are emerging as a solution to overcome these issues, promising higher energy consumption reduction compared to classic wake-up protocols. By combining different transceivers and reporting protocols regarding energy efficiency, multimodality in WSNs is achieved. This paper presents an energy consumption estimation model that considers the behavior and performance of wake-up protocols based on WuRx in multi-hop communications under several cases instead of traditional low-duty cycling schemes. The results show that the WuRx with addressing does not significantly reduce the energy consumption compared to WuRx without addressing. In some cases, classic low-duty cycling protocols outperform WuRx based protocols, but in most cases, it is contrariwise, giving a strong motivation for considering multi-modal approaches in WSNs.

Palavras-chave : Energy efficiency; multimodal wireless sensor; network; low-duty-cycling; wake-up radio.

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