A proposal of self-configuration in Wireless Sensor Network for recovery of broken paths

In the last decade, there was a great technological advancement in the areas of sensors, integrated circuits and wireless communication, which led to creation of Wireless Sensor Networks (WSN). This type of network is being used in areas such as tourism, education, medical, military and others. The applications, in that type of network, impose specific requisites related to the energy consumption and reliable delivery. The routing protocols, for the WSN, must have self-configuration characteristics aimed at discovering which is the best way for transferring the information, with delivery assurance and with minimum energy consumption, among the nodes that compose the network. This article proposes a modification of the Directed Diffusion routing protocol so as to reduce the energy consumption in the network when there is an occurrence of failures. The proposal utilizes a Geocast approach to repair broken paths by constructing a new routing tree. The performed simulations demonstrated that our proposal is more efficient from the energy viewpoint.