Increasing Wireless Sensor Networks durability through fault nodes resilience capability

A Wireless Sensor Network (WSN) is mission dependent and deployed in an interesting area in order to collect information describing an observable phenomenon. In a clustering configuration approach, nodes are organized in clusters, within one ClusterHead (CH) node is responsible for managing and scheduling sensed data communications among standard nodes and sink. So, the success of a WSN mission is tightly relied on the robustness of indispensable nodes: CH and sink. Since WSNs are generally deployed in harsh environments, CHs and Sink are prone to failures so, the survival of a WSN depends strictly on survival of its sink and CHs. In this paper, we investigate the ability to render CHs and sink more resilient to failure. To this end, we propose a protocol avoiding sink and CHs to be central point of failure and making them more faults tolerant. Simulation carried out via PowerTOSSIM/TinyOS showed attracting and convincing results.