An Improved ACO-Based Security Routing Protocol for Wireless Sensor Networks

Wireless sensor networks(WSNs) are usually deployed for gathering data from unattended or hostile environment. It is essential to balance the energy consumption among all sensor nodes and ensure the security of applications. This paper proposes an improved ACO-based security routing protocol for wireless sensor networks. First, we choose the evaluation model of fuzzy logic to evaluate the node trust value effectively. Second, we address the problem of the increment of the pheromone by means of the two factors, the trust value and the residual energy of nodes. So, the optimal path will be found by calculating the probability and fitness value. Experiments show that the algorithm can guarantee to find the forwarding path with low cost in the premise of ensuring security.