Multi-node power supply resiliency of communication networks during extreme events

This paper develops resiliency models for cell sites considering multiple nodes during extreme events. The spatial and temporal resilience characteristics are calculated for different cities across the US. Evaluating local energy storage's impact on uptime and user-cell site connections is done via the developed multi-node resilience models. The multi-node resiliency model provides a broad quantitative view of cell site power supply performance and its impact on communication system performance. Local resilience calculations were used as a building block to calculate the multi-node resiliency. The resilience functions show grid failure, cellular traffic and travel delays concurrently leads to poor single node as well as multi-node resilience in the absence of energy storage. Overall power supply resilience improvement can be observed due to proper energy storage sizing and planning for possible long delays in fuel delivery with larger storage tanks.