Incorporating trust in location-based routing protocols

Security is currently a weak point of wireless sensor networks (WSN) impeding their proliferation although they offer flexible and low cost solutions for many every-day life applications. In WNSs, routing of data from the sensor nodes towards the destination/base station relies on the cooperation among neighbouring nodes. The realization of a trust management system which allows each node to define a trust value for each neighbour has been proposed as a powerful tool towards defending against the routing attacks. In this paper, we investigate how the trust information can be incorporated in the routing protocol and we compare based on simulation results three different trust-aware geographical routing algorithms.