Abstract
A disaster may not necessarily demolish the telecommunications infrastructure, but instead it might affect the national grid and cause blackouts, consequently disrupting the network operation unless there is an alternative power source(s). In disaster-resilient networks, fiber cut, datacenter destruction, and node isolation have been studied before with different scenarios, but the power outage impact has not been investigated before. In this paper, power outages are considered, and the telecommunication network performance is evaluated during a blackout. A mixed Integer Linear Programming (MILP) model is developed to evaluate the network performance for a single node blackout under two scenarios: minimization of blocking and minimization of renewable and battery energy consumption. Insights analyzed from the MILP model results have demonstrated the trade-off between the two evaluated optimization cost functions and shown that the proposed scheme can extend the network lifetime while minimizing the required amount of backup energy.
Highlights
P OWER outage is one of the main disruption causes for telecommunication network operations
Telecommunication networks depend on the power grid, the authors in [1] described the relation between the Internet and the power grid as an example of infrastructure interdependence as the Internet depends mainly on the power grid to stay operational while the Supervisory Control And Data Acquisition (SCADA) systems use the Internet to communicate
In this paper, building a blackout resilient network has been investigated in the optical core network
Summary
P OWER outage is one of the main disruption causes for telecommunication network operations. Energy-efficiency is another important metric when designing and operating networks under normal conditions and under disaster conditions It can be considered a mitigation approach for blackouts, as minimizing power consumption can save the limited power sources available. In [43], the researchers evaluated the power consumption for different types of protection schemes They suggested the use of differentiated Quality of Protection (DQoP) depending on the type of client to enhance the energy efficiency of fixed-grid WDM networks and flexible-grid elastic OFDM-based network. In [44], the authors evaluated the energy efficiency by using sleep mode devices in the four protection schemes (DPP, SPP, SLP and DLP) They developed a mathematical linear model to design power-aware protected networks.
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