Energy-Efficient Preventive Mechanism for Fault Tolerance in Wireless Multimedia Sensor Networks
Mohamed Nacer Bouatit, Selma Boumerdassi, Adel Djama, R.H. Milocco · 2017
Multimedia applications convey large mass of data that requires high transmission rate and intensive treatment, therefore high energy consumption. Transmitting this large media stream while ensuring its reliability and varying QoS requirements with limited available resources are difficult tasks to achieve. In this paper, we present an Energy-efficient routing protocol baptized EGMFT, that improves our previous work on Geographic Multipath Fault Tolerant (GMFT) routing protocol, reinforced by preventive fault-tolerant mechanism, when sensor's energy reaches critical threshold, to effectively manage this precious resource, in order to achieve more balanced energy consumption and load distribution in the network that extends its lifetime. More importantly, to prevents any link breakdown related to battery depletion during real-time data transmission, which affects network connectivity and transmitted stream reliability. Simulations results show significant contribution and indicate that EGMFT is highly advised to guarantee discrete data and continuous media stream reliability even in faulty network.