Performance evaluation of VeMAC supporting safety applications in Vehicular networks

Hassan Aboubakr Omar, Weihua Zhuang, Atef Abdrabou, Li Li

Research output: Contribution to journalArticlepeer-review

74 Citations (Scopus)


Vehicular ad hoc networking (VANET) is an emerging paradigm that is expected to increase the public safety standards and enhance the safety level of drivers/passengers and pedestrians on roads through a variety of applications. We have recently proposed VeMAC, a medium access control protocol that supports a reliable one-hop broadcast service necessary for high priority safety applications in VANETs. This paper explains how the VeMAC protocol can deliver both periodic and event-driven safety messages in vehicular networks and presents a detailed delivery delay analysis, including queueing and service delays, for both types of safety messages. The probability mass function of the service delay is first derived; then, the D/G/1 and M/G/1 queueing systems are used to calculate the average queueing delay of the periodic and event-driven safety messages, respectively. In addition, a comparison between the VeMAC protocol and IEEE 802.11p standard is presented via extensive simulations using the network simulator ns-2 and the microscopic vehicle traffic simulator VISSIM. A real city scenario is considered and different performance metrics are evaluated, including the network goodput, protocol overhead, channel utilization, protocol fairness, probability of a transmission collision, and message delivery delay.

Original languageEnglish
Article number6584000
Pages (from-to)69-83
Number of pages15
JournalIEEE Transactions on Emerging Topics in Computing
Issue number1
Publication statusPublished - Jun 2013


  • Delay analysis
  • Medium access control
  • Safety messages
  • TDMA
  • Vehicular ad hoc networks

ASJC Scopus subject areas

  • Computer Science (miscellaneous)
  • Information Systems
  • Human-Computer Interaction
  • Computer Science Applications


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