Articles

 

Efficient data transfer in mobile ad-hoc network using OPSM for disaster response applications

 

V. Bhanumathi^a*, R. Dhanasekaran^b

 

^a Anna University, Regional Centre Coimbatore, Coimbatore, Tamilnadu, India. * Corresponding author. E-mail address: vbhanu_02@yahoo.com

^b Syed Ammal Engineering College, Ramanathapuram, Tamilnadu, India.

 

Abstract

The nodes in mobile ad-hoc network depend on battery for its power. Therefore, effective utilization of energy is necessary for efficient transfer of data between the persons involved in rescue without connection termination in disaster situation. An Optimal Path Selection Model (OPSM) is proposed to achieve this. First, routes are identified with the links having high power ratio and link duration. The path selection aims at reducing the number of node failures which in turn obtains energy saving. Then, the source will select a node-disjoint path based on energy and hop for data transfer and store the remaining paths in cache. Priority based path maintenance is also proposed for the selection of routes from cache based on remaining energy if the primary selection fails. Path selection and maintenance extend the network lifetime by reducing the energy usage in transmission. Simulation results revealed that OPSM achieves 64% and 50% reduction in energy consumption compared to Dynamic Source Routing (DSR) and Multipath DSR (MDSR). The number of path breakages is also 11 times and 5.5 times lesser than DSR and MDSR. Thus, it can be said that OPSM is a better choice for optimal path selection for performance enhancement by saving energy and improving lifetime.

Keywords: Transmitting power; Received power; Node-disjoint; Path finding; Path selection; Energy consumption and hops.

 

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