Fostering Reliability of Ad Hoc Networks through Fuzzy Nodes

Various solutions have been proposed to increase the reliability of wireless ad hoc networks. These solutions can be divided into three domains: proactive, reactive and hybrid, proactive protocols enjoy a quick recovery of faults and high overflow of upstream routing. On the contrary, reactive protocols have a low speed for recovery and low overflow downstream routing. Hybrid protocols enjoy some positive properties of the above sort. Here, a fuzzy-based method has been proposed to increase the reliability and improve fault tolerance of ad hoc networks. This method requires nodes, available in the network, named fuzzy nodes, to change the radius transmission through sampling various environmental conditions. Unlike most previous protocols, leading to only one protocol or recovery of one or a few faults, this method can be run in various ad hoc protocols. It is also effective against a variety of faults; particularly, the faults coming from the network partition. Not only does this network have no negative effect on the consumption power but also, it sometimes contributes to the decrease of consumption.