Improving the Robustness of Fuzzy Trust Management System for WSNs

Trust management system has gained world-wide attention in recent years [1, 17], particularly Fuzzy Trust Management System [19, 20, 21], because of uncertainty and ambiguity of trust nature [25, 26, 27]. Weakness of signal in surrounding environment lead to fail in communication, especially in adverse weather conditions. As a consequence nodes cannot communicate with each other that cause decreeing in trust values. While nodes are unable to trust each other, there will be no more cooperation thus environmental conditions should be included in trust calculation. In previous paper [28], a new way to calculate trust was introduced. In this paper environmental conditions are considered as an important factor in trust calculation. Simulation and analyze demonstrates that model is self-configurable and adaptive with environment and trust values are more scalable and robust.

Keywords:

Trust , Fuzzy , Sensor Network , Environment