A trusted fuzzy based stable and secure routing algorithm for effective communication in mobile adhoc networks

Mobile Ad-hoc Networks have distinct characteristics namely lack of centralized control and management, severe resource constraints in terms of energy level of nodes, computing power, frequent mobility and frequent change of topology. This dynamic nature of mobile adhoc networks lead to additional overhead in the provision of secured and stable routing. In order to address these issues, we propose a new integrated approach for secure routing approach in this paper which is made of two new algorithms called as the Trust based Next Forwarding Node Selection algorithm and Fuzzy Based Stable and Secure Routing algorithm that makes use of the trust based node selection procedure for providing efficient routing performance. The main contribution of this newly proposed node selection procedure is that this technique uses trust values to isolate the malicious nodes from the routing process in order to enhance the security. Hence, this proposed stable and secured routing technique performs reliable routing by selecting only trusted nodes with high residual energy and link stability. Another contribution of this work is the development of a Fuzzy Inference System which is used to handle uncertainty in the selection of trusted nodes and to identify the stable routes by performing qualitative analysis on trust values and link properties. From the implementation and testing carried out in this research work, it has been observed and proved that this proposed secured routing algorithm is capable of increasing the network performance in terms of improved packet delivery ratio, reduction in delay as well as false positive rate when compared with related secure routing algorithms.