Energy Efficient Mobility Management in Wireless Sensor Networks

Abstract

Mobile Wireless Sensor Network (MWSN) has mobile sensor nodes which sense the data and communicate with the base station via other nodes. Both sensor nodes and sinks can be mobile and can operate with static sensor nodes in the network based on the application requirements. However, mobility poses new challenges for the researchers particularly in energy consumption and packets loss in addition to routing protocols are responsible for discovering and maintaining the routes in the network. In this thesis, a new routing protocol is proposed for mobile wireless sensors, which was invented after a thorough study of various protocols in the literature that try to resolve the typical routing issues for both technologies of WSNs and MWSNs. Our proposed protocol, called FF-LEACH, takes the advantages of the MH-LEACH-1R protocol, as well as properties of the firefly optimization. In order to show the performance of the proposed protocol, we have performed some simulations, comparisons and analysis using MATLAB environment. These routing protocols (LEACH-M, MH-LEACH-1R, and FF-LEACH) are compared based on different factors such as residual energy, data delivery to the base station, number of rounds, nodes alive, and packets loss. Experimental results show that our proposed protocol FF-LEACH has the best performance in almost all metrics especially in terms of lifetime and lost packets.