Using trust for lightweight communication in VANETs Online publication date: Wed, 15-Jul-2015
by Brijesh Kumar Chaurasia; Ranjeet Singh Tomar; Shekhar Verma
International Journal of Artificial Intelligence and Soft Computing (IJAISC), Vol. 5, No. 2, 2015
Abstract: In this paper, an HMM-based mechanism for evaluating trust in VANETs has been proposed. VANETs are characterised by the ephemeral nature of the neighborhood. Interaction with fresh neighbours at short intervals of time renders cryptographic mechanisms message intensive due to their repeated requirements. Moreover, an authenticated vehicle may strategically change its behaviour to maximise its driving comfort or other gains. This requires context aware trust dynamic computation mechanism to characterise a vehicle's behaviour and to reduce the excessive cryptographic overhead. In VANETs, vehicles communicate critical safety messages in addition to other messages and a change in behaviour can lead to collision. In the present work, a trust model in which beta model works in conjunction with HMM has been employed. Simulation results show that the time taken by the scheme is significantly less and transmission over the shared wireless channel is in the order of milliseconds.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Artificial Intelligence and Soft Computing (IJAISC):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com
Our Blog 
Follow us on Twitter 
Visit us on Facebook