A Framework for Spatial and Temporal Evaluation of Network Disaster Recovery

Marija Gajic, Marija Furdek, Poul Heegaard

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Scopus citations

Abstract

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.

Original languageEnglish
Title of host publicationProceedings of the 32nd International Teletraffic Congress, ITC 2020
EditorsYuming Jiang, Hideyuki Shimonishi, Kenji Leibnitz
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages37-45
Number of pages9
ISBN (Electronic)9783948377021
DOIs
StatePublished - Sep 2020
Externally publishedYes
Event32nd International Teletraffic Congress, ITC 2020 - Virtual, Osaka, Japan
Duration: 22 Sep 202024 Sep 2020

Publication series

NameProceedings of the 32nd International Teletraffic Congress, ITC 2020

Conference

Conference32nd International Teletraffic Congress, ITC 2020
Country/TerritoryJapan
CityVirtual, Osaka
Period22/09/2024/09/20

Keywords

  • Survivability
  • content delivery network
  • disaster recovery
  • network resilience

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