Mobile Networks and Applications

, Volume 18, Issue 2, pp 174–185

Medium Access Control for QoS Provisioning in Vehicle-to-Infrastructure Communication Networks

  • Yuanguo Bi
  • Lin X. Cai
  • Xuemin (Sherman) Shen
  • Hai Zhao
Article

DOI: 10.1007/s11036-012-0350-x

Cite this article as:
Bi, Y., Cai, L.X., Shen, X.. et al. Mobile Netw Appl (2013) 18: 174. doi:10.1007/s11036-012-0350-x

Abstract

The emerging vehicular networks are targeted to provide efficient communications between mobile vehicles and fixed roadside units (RSU), and support mobile multimedia applications and safety services with diverse quality of service (QoS) requirements. In this paper, we propose a busy tone based medium access control (MAC) protocol with enhanced QoS provisioning for life critical safety services. By using busy tone signals for efficient channel preemption in both contention period (CP) and contention free period (CFP), emergency users can access the wireless channel with strict priority when they compete with multimedia users, and thus achieve the minimal access delay. Furthermore, through efficient transmission coordination on the busy tone channel, contention level can be effectively reduced, and the overall network resource utilization can be improved accordingly. We then develop an analytical model to quantify the medium access delay of emergency messages. Extensive simulations with Network Simulator (NS)-2 validate the analysis and demonstrate that the proposed MAC can guarantee reliable and timely emergency message dissemination in a vehicular network.

Keywords

medium access control quality of service emergency service vehicular network 

Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  • Yuanguo Bi
    • 1
  • Lin X. Cai
    • 2
  • Xuemin (Sherman) Shen
    • 3
  • Hai Zhao
    • 1
  1. 1.College of Information Science and EngineeringNortheastern UniversityShenyangChina
  2. 2.Department of Electrical EngineeringPrinceton UniversityPrincetonUSA
  3. 3.Department of Electrical and Computer EngineeringUniversity of WaterlooWaterlooCanada

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