ISSN : 1796-2021
Volume : 4    Issue : 5    Date : June 2009

Cluster-based Communications System for Immediate Post-disaster Scenario
Sonia Majid and Kazi Ahmed
Page(s): 307-319
Full Text:
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Communication facilities can totally be destroyed by natural and / or manmade disasters. A critical
problem after disaster is getting the first hand knowledge of the destructions and also establishing
some communication links among the survivors. This paper focuses on the vital need for providing
communications facility to the victims, immediately after the disaster and prior to the arrival of
rescue teams. The proposed novel approach in emergency communications enables survivors to
communicate among themselves and help each other. Here, the idea of a selforganizing network is
put forward, which makes use of available network resources formally occupied by the destroyed
and / or damaged telecommunications’ infrastructure. In our post-disaster scenario, mobile nodes
establish a self-organizing / ad hoc network which provides critical level of communications among
disaster victims needed at that time and consequently tries to merge with some surviving
telecommunications infrastructure and / or network deployed by rescue teams. The outcome of this
paper is a fundamentally novel idea for immediate postdisaster communications. This idea is
tested through some network survivability measures and hypothesis testing. We also test the
working of this ad hoc network through simulation for post-disaster scenarios of partially and fully
destroyed networks. The results obtained are found to be satisfactory and within acceptable limits of
ad hoc networks.

Index Terms
post-disaster communications, emergency communications, self-organizing network, disaster