Congestion Control for Vehicular Environments by Adjusting IEEE 802.11 Contention Window Size

  • Ali Balador
  • Carlos T. Calafate
  • Juan-Carlos Cano
  • Pietro Manzoni
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8286)

Abstract

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.

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Copyright information

© Springer International Publishing Switzerland 2013

Authors and Affiliations

  • Ali Balador
    • 1
  • Carlos T. Calafate
    • 1
  • Juan-Carlos Cano
    • 1
  • Pietro Manzoni
    • 1
  1. 1.Universitat Politecnica de ValenciaValenciaSpain

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