Data-Centric Dempster-Shafer Theory-Based Selfishness Thwarting via Trust Evaluation in MANETs and WSNs

Selfishness detection is becoming a hot issue in mobile ad hoc networks and wireless sensor networks. We use Dempster-Shafer theory of evidence in a novel way to incorporate data-centric trust evaluation for detection of nodes´ selfish forwarding behavior. Within the proposed D2S2T2 framework, trust is considered in regard to forwarding, as part of routing support, as well as in regard to recommendations, as part of cooperation enforcement support. D S T takes care to control the impact of third-party nodes to make the system more robust against malicious attacks, while minimizing the time taken to detect all selfish nodes in the network. Preliminary simulations shed light on the influence of recommender location and recommendation content.