Refined Energy Consumption Model of an STA in a Wi-Fi HaLow Network

The deployment of an IoT network is subject to energy consumption constraints. To minimize service costs, it is essential to optimize the lifetime of objects, which are often powered by unreliable energy sources. This optimization must be based on finely-tuned energy consumption models and those generally proposed in the literature do not take into account all the specificities of the transmission of a connected object. In this article, a refined power consumption model based on in-situ measurements is proposed for an 802.11ah station. This improved model takes into account the number of nodes in the network, the number of retransmission attempts and the various exchanges linked to the higher communication layers. The results show the influence of the number of stations in an 802.11ah network on a station’s energy consumption, and demonstrate that the maximum number is limited by the probability of successful transmission.