improving performance level of traffic channel mobility conditions based on vanets clustering and modelling
R.Indhumathi,S.Merlin Maria,W.Mercy
Published in International Journal of Advanced Research in Computer Science Engineering and Information Technology
ISSN: 2321-3337 Impact Factor:1.521 Volume:4 Issue:3 Year: 05 April,2016 Pages:897-903
Abstract
In Vehicular Ad Hoc Networks VANETs, vehicles driving along highways can be grouped into clusters to facilitate communication. The design of the clusters has significant impacts on communication quality. Such design is affected by the Media Access Control MAC operations at the Data Link layer, the wireless channel conditions at the Physical layer, and the mobility of the vehicles. Previous works investigated these effects separately. In this paper, we propose a comprehensive analysis that integrates the three important factors into one model. Closed-form expressions of network performance measures, such as packet loss probability and system throughput, are derived. Our model, validated by extensive simulations, is able to accurately characterize VANET performance. Our analysis reveals intrinsic dependencies between cluster size, vehicle speed, traffic demand, and window size, as well as their impacts on the overall throughput and packet loss of the cluster. Performance evaluation results demonstrate the practical value of the proposed model in providing guidelines for VANET design and management.
Kewords
VANET, medium access control, Markov chain, Road Side Unit, mobility, On Board Unit
Reference
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