An ns-3 Model for Simultaneous Wireless Information and Power Transfer over IEEE 802.11ah Networks

The challenge posed by the escalating energy requirements demanded by the proliferation of Internet of Things (IoT) devices, associated with their deployment in remote and hard-to-reach locations, creates a logistical problem for maintenance and battery replacements. In response to this, simultaneous wireless information and power transfer (SWIPT) emerges as a compelling solution, allowing devices to be powered by received RF signals intended for information transfer. In spite of its potential, research on SWIPT has mostly focused on physical layer issues or have dealt with generic networks or single-link scenarios. To help advance research in this area, this paper introduces an ns-3 extension for simulation of power-splitting SWIPT in IoT networks based on the IEEE 802.11ah standard. We describe the adopted SWIPT model, its implementation in the ns-3, key parameters and features. To showcase its use, we present simulation results of a SWIPT-based IEEE 802.11ah network targeting a specific IoT application, and investigate the effect of the power-splitting parameter on the energy-sustainable operation of sensors at different distances from the access point.