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A HYBRID WIRELESS NETWORK MODEL FOR POST DISASTER RELIEF OPERATIONS

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Author(s): SK Dwivedi | NK Shukla | Sudhakar Pandey

Journal: International Journal of Soft Computing & Engineering
ISSN 2231-2307

Volume: 1;
Issue: 6;
Start page: 424;
Date: 2012;
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ABSTRACT
In the event of large scale natural disaster, most of the public utility services like communication, power and roads get disrupted. Post disaster relief operations need quick but reliable restoration of these services. Rapid and reliable deployment of communication setup is highly crucial to commence rescue and relief operations. Mobile Ad-hoc Networks (MANETs) can be built quickly but suffer from problems due to nodes mobility; on the other hand, Static Ad-hoc Networks (SANETs) can provide better performance but takes longer time to establish. This paper presents a Hybrid Network model having features like scalability, robustness, speedy deployment, portability, cost effective and desired QoS. The proposed Hybrid Ad-hoc Network (HANET) topology is a combination of static nodes of grid topology of SANET and the mobile nodes of random topology of MANET. In the recent past, many researchers have shown interest in the development of directional antenna based MAC protocols. Although directional antenna brings in advantages of higher transmission range, spatial reuse and so on but equally suffers from typical problems of hidden/exposed terminals, head-of-line blocking and deafness etc. In this paper, we have proposed a novel protocol based on the directional smart antenna to exploit the advantage of spatial reuse in terms of multiple concurrent transmissions while ensuring collision avoidance. Simulation results demonstrated that the throughput and end-to-end delay performances of the proposed MAC protocol with HANET model is significantly better than the legacy MANETs with IEEE 802.11-MAC.
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