This paper examines the reduction in brown power consumption of transport networks and data centres achieved by caching Video-on-Demand (VoD) contents in solar-powered fog data centers with Energy Storage Devices (ESDs). A Mixed Integer Linear Programming (MILP) model was utilized to optimize the delivery from cloud or fog data centres. The results reveal that for brown-powered cloud and fog data centres with same Power Usage Effectiveness (PUE), a saving by up to 77% in transport network power consumption can be achieved by delivering VoD demands from fog data centres. With fully renewable-powered cloud data centres and partially solar-powered fog data centres, savings of up to 26% can be achieved when considering 250 m2 solar cells. Additional saving by up to 14% can be achieved with ESDs of 50 kWh capacity.
@article{arxiv.1903.10250,
title = {Fog-assisted Caching Employing Solar Renewable Energy for Delivering Video on Demand Service},
author = {Mohamad Bin Abdull Halim and Sanaa Hamid Mohamed and Taisir E. H. El-Gorashi and Jaafar M. H. Elmirghani},
journal= {arXiv preprint arXiv:1903.10250},
year = {2019}
}