A TRUST SYSTEM FOR ESTABLISHING STABLE AND RELIABLE ROUTES IN HETEROGENEOUS MULTIHOP WIRELESS NETWORKS

Abstract

— Stable and reliable route establishment in heterogeneous multihop wireless networks is a challenging task.
Nodes are typically autonomous, self interested and may belong to different authorities. Malfunctioned nodes frequently
drop packets and break routes due to faulty hardware or software and malicious nodes actually break routes to disrupt
data transmission. Because of this uncertainty in the nodes behavior, randomly selecting the intermediate nodes will
degrade the routes stability and also endanger the reliability of data transfer. This project presents the trust management
scheme that uses two kinds of trust called E-Star and predictability trust. For the secure transmission I used onion
protocol. The trust system evaluates the nodes competence and reliability in relaying packets in terms of multi
dimensional trust values using payment system rewards. The trust values are attached to nodes public key certificate to
make routing decisions. Trust system aims to improve the collaboration between the nodes in wireless networks by
predicting the future behavior based on the previous behavior. The trust system typically does this by observing and
storing the neighbor’s behavior. Based on the trust values each node with which to collaborate and can improve the
packet delivery ratio and stability. TA implementation is also achieved for successful validation of concatenated keys
there by reward is provided to the intermediate hops.