Jinze Yang
ABSTRACT
Many natural disasters are unpredictable and can cause great damage to the communications infrastructure of the affected areas. The disruption of communications in disaster areas can severely hinder the process of disaster relief and therefore, strategies aiming at quickly deploying communications capabilities are part of the disaster response. Information Centric Delay Tolerant Networks (ICDTN) constitute an attractive option for quickly restoring the communications capabilities in disaster areas. In this paper, we consider an ICDTN infrastructure-less scenario in which moving nodes, capable of exchanging content units, act as the ferry for the transmission of information. With the assumption that moving nodes follow the Random Waypoint Mobility Model (RWMM), we propose a Markovian model describing the request and delivery of content units and obtain the distribution of encounter numbers and delay between content request and delivery. We compare the results from our Markovian model with simulation results and show that our approach describes ICDTN over RWMM nodes with high accuracy.
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Index Terms
- Modelling the Delay Distribution of Information Centric Delay Tolerant Networks in Disaster Area
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