Uncertainty Mitigation for Trustworthiness-Oriented Applications in Wireless Ad Hoc Networks

Feng LI  Jie WU  Avinash SRINIVASAN  

IEICE TRANSACTIONS on Information and Systems   Vol.E95-D   No.1   pp.12-19
Publication Date: 2012/01/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E95.D.12
Print ISSN: 0916-8532
Type of Manuscript: INVITED PAPER (Special Section on Trust, Security and Privacy in Computing and Communication Systems)
trustworthiness,  risk,  uncertainty,  wireless ad hoc networks,  

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Link and node trustworthiness are important metrics in wireless ad hoc networks. Many existing wireless ad hoc network routing algorithms assume the availability of precise trustworthiness information. This, however, is an unrealistic assumption given the dynamics of wireless ad hoc networks. Therefore, a realistic method is needed to evaluate trustworthiness by mitigating uncertainty in the estimation process. In this paper, we propose a novel trustworthiness estimation model that accounts for uncertainty as well as two uncertainty mitigation schemes. We then illustrate the effectiveness of our schemes using a utility-oriented routing algorithm as a sample application. An extensive simulation study shows that these two uncertainty mitigation schemes significantly increase path stability and the long-term total benefit of the wireless ad hoc network.