# Power Beacon-Assisted Millimeter Wave Ad Hoc Networks

## TL;DR

This paper develops a stochastic geometry-based model for millimeter wave ad hoc networks powered by low-cost power beacons, analyzing coverage probability considering realistic WPT and mmWave features, and validating the model with simulations.

## Contribution

It introduces a tractable, realistic model for PB-assisted mmWave ad hoc networks, incorporating key practical aspects and enabling analysis of system parameters' effects.

## Key findings

- Coverage probability depends on PB power, density, beam-width, and activation threshold.
- Model predictions closely match simulation results, confirming accuracy.
- Power beacons can safely and effectively power mmWave ad hoc networks.

## Abstract

Deployment of low cost power beacons (PBs) is a promising solution for dedicated wireless power transfer (WPT) in future wireless networks. In this paper, we present a tractable model for PB-assisted millimeter wave (mmWave) wireless ad hoc networks, where each transmitter (TX) harvests energy from all PBs and then uses the harvested energy to transmit information to its desired receiver. Our model accounts for realistic aspects of WPT and mmWave transmissions, such as power circuit activation threshold, allowed maximum harvested power, maximum transmit power, beamforming and blockage. Using stochastic geometry, we obtain the Laplace transform of the aggregate received power at the TX to calculate the power coverage probability. We approximate and discretize the transmit power of each TX into a finite number of discrete power levels in log scale to compute the channel and total coverage probability. We compare our analytical predictions to simulations and observe good accuracy. The proposed model allows insights into effect of system parameters, such as transmit power of PBs, PB density, main lobe beam-width and power circuit activation threshold on the overall coverage probability. The results confirm that it is feasible and safe to power TXs in a mmWave ad hoc network using PBs.