A Framework for Spatial and Temporal Evaluation of Network Disaster Recovery
Paper in proceedings, 2020

The support of vital societal functions requires a reliable communication network, especially in the presence of crises and disastrous events. Disasters caused by natural factors including earthquakes, fires, floods or hurricanes can disable network elements such as links and nodes and cause widespread disruption in end users connectivity to network services. Effects of disasters can vary over space and time due to disaster escalation and propagation. Network recovery from disasters requires understanding of both the spatial properties of the hazard at hand, and their temporal evolution. While the former has already been addressed in the literature, existing models and measures are unable to capture the temporal aspects of disaster recovery.This paper proposes a framework for spatial and temporal evaluation of network disaster recovery. It allows for modelling random spatial patterns of disasters in a geographical grid. The temporal aspects captured in our framework include changes due to the progression of a potentially shape-changing disaster across the affected area, as well as to the recovery actions of adaptive network reconfiguration and topology reconstruction undertaken by the network operator. The framework applicability is demonstrated on a content delivery network use case example, where we capture the evolving network performance in terms of the average shortest path length between the peers and the content replicas hosted by servers. By providing insights into the spatial and temporal effects of both disaster escalation and remediation measures, our proposed framework lays down the groundwork for flexible disaster modelling and recovery sequence optimization.

content delivery network

network resilience

Survivability

disaster recovery

Author

Marija Gajic

Norwegian University of Science and Technology (NTNU)

Marija Furdek Prekratic

Chalmers, Electrical Engineering, Communication and Antenna Systems, Optical Networks

Poul Heegaard

Norwegian University of Science and Technology (NTNU)

Proceedings of the 32nd International Teletraffic Congress, ITC 2020

37-45 9355512

32nd International Teletraffic Congress, ITC 2020, Online
Osaka, Japan,

Subject Categories

Computer Engineering

Telecommunications

Communication Systems

DOI

10.1109/ITC3249928.2020.00013

More information

Latest update

3/26/2021