2013 | OriginalPaper | Buchkapitel
Congestion Control for Vehicular Environments by Adjusting IEEE 802.11 Contention Window Size
verfasst von : Ali Balador, Carlos T. Calafate, Juan-Carlos Cano, Pietro Manzoni
Erschienen in: Algorithms and Architectures for Parallel Processing
Verlag: Springer International Publishing
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Medium access control protocols should manage the highly dynamic nature of Vehicular Ad Hoc Networks (VANETs) and the variety of application requirements. Therefore, achieving a well-designed MAC protocol in VANETs is a challenging issue. The contention window is a critical element for handling medium access collisions in IEEE 802.11, and it highly affects the communications performance. This paper proposes a new contention window control scheme, called DBM-ACW, for VANET environments. Analysis and simulation results using OMNeT++ in urban scenarios show that DBM-ACW provides better overall performance compared with previous proposals, even with high network densities.