| Mobile Ad Hoc network is a kind of acentric and self-organizing multi-hopwireless network. Topology changes frequently in mobile Ad Hoc networks. Node’senergy, bandwidth and computation capability are limited. In addition, the open linksare vulnerable to network attacks. Therefore, the problems of the security and reliabilityof routing are very serious. Multipath routing is able to enhance the reliability of routingeffectively, but the resource attribute and behavioral characteristics of nodes are out ofconsideration and the effect is very limited. And the trust mechanism can effectiveydescirbe these features and become an important reference factor for secure routingentablishment. Therefore, in this paper the multipath routing technology based on trustmechanism in Ad Hoc networks are researched.Firstly, a trust model framework based on relationship of mutual trust betweenrouting nodes is proposed. Compared to the traditional trust model, it considersthe influence factors of trust between routing nodes and proposes a trust model based onmultiple decision attributes by introducing four decision factors—direct trust, recomme-ndation trust, reward&penalty trust and history trust. In process of node trustcomputation and fusion of four decision factors, the triangular fuzzy attribute measuremethod (F->AHM) is introduced to confirm the classification weight of trust factors inorder to overcome the subjective weight judgment method. A multiple attributedecision-making based trusted multipath routing algorithm is proposed. In this work, atrust management scheme is presented by introducing fuzzy attribute measure methodof F->AHM. Finally, a trusted multipath routing algorithm based on AOMDV protocolis designed using the proposed trust management scheme. The simulation results showthat the proposed algorithm has better dynamic adaptability and anti-attacks capability.The robustness and security of routing are improved effectively. |
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