Recently, the concept of wake-up radio based access has been considered as an effective power saving mechanism for 5G mobile devices. In this article, the average power consumption of a wake-up radio enabled mobile device is analyzed and modeled by using a semi-Markov process. Building on this, a delay-constrained optimization problem is then formulated, to maximize the device energy-efficiency under given latency requirements, allowing the optimal parameters of the wake-up scheme to be obtained in closed form. The provided numerical results show that, for a given delay requirement, the proposed solution is able to reduce the power consumption by up to 40% compared with an optimized discontinuous reception (DRX) based reference scheme.
@article{arxiv.1911.04177,
title = {Wake-Up Radio based Access in 5G under Delay Constraints: Modeling and Optimization},
author = {Soheil Rostami and Sandra Lagen and Mario Costa and Mikko Valkama and Paolo Dini},
journal= {arXiv preprint arXiv:1911.04177},
year = {2019}
}