1. Cisco Visual Networking Index: Global Fixed and Mobile Internet Traffic Forecasts, 2017-2022, White Paper. [link]. URL http://www.cisco.com/c/en/us/solutions/service-provider/visual-networking-index-vni/index.html.
2. Proactive content caching using surplus renewable energy: A win–win solution for both network service and energy providers;Zahed;Future Gener. Comput. Syst.,1931
3. Green heterogeneous small-cell networks: toward reducing the CO2 emissions of mobile communications industry using uplink power adaptation;Shakir;IEEE Commun. Mag.,2013
4. A. Ekti, M. Shakir, E. Serpedin, K. Qaraqe, End-to-end downlink power consumption of heterogeneous small-cell networks based on the probabilistic traffic model, in: Proc. IEEE WCNC, 2014, pp. 1138–1142.
5. 5G Infrastructure Public Private Partnership. [link]. URL https://5g-ppp.eu/.