Research Article
Modeling and Simulation of WAVE 1609.4-based Multi-channel Vehicular Ad Hoc Networks
@INPROCEEDINGS{10.4108/icst.simutools.2012.247743, author={Ali Ghandour and Marco Di Felice and Hassan Artail and Luciano Bononi}, title={Modeling and Simulation of WAVE 1609.4-based Multi-channel Vehicular Ad Hoc Networks}, proceedings={Fifth International Conference on Simulation Tools and Techniques}, publisher={ICST}, proceedings_a={SIMUTOOLS}, year={2012}, month={6}, keywords={vehicular ad hoc networks wave 16094 protocol modeling and simulation performance evaluation}, doi={10.4108/icst.simutools.2012.247743} }- Ali Ghandour
Marco Di Felice
Hassan Artail
Luciano Bononi
Year: 2012
Modeling and Simulation of WAVE 1609.4-based Multi-channel Vehicular Ad Hoc Networks
SIMUTOOLS
ICST
DOI: 10.4108/icst.simutools.2012.247743
Abstract
Recently, the IEEE 1609.4 Standard for Wireless Access in Vehicular Environments (WAVE) has been proposed to enhance the performance of vehicular networks with multi-channel operations that allow for the coexistence of safety-related and non-safety related vehicular applications. However, while the benefits of the multi-channel approach are clear, the impact of the IEEE 1609.4 channel scheduler on the performance of delay-constrained vehicular applications remains to be well explored by researchers. At present, the evaluation of 1609.4-based Vehicular Ad Hoc Networks (VANETs) constitutes an open issue due to the lack of simulation tools that can provide a complete modeling of the IEEE WAVE 802.11p/1609.4 stack. In this paper, we describe our implementation of the IEEE 1609.4 protocol integrated with the ns2 implementation of the 802.11p MAC protocol. Our evaluation study of 1609.4-based VANETs shows that the tight channel synchronization issues might have a dramatic impact on the performance of safety-related applications. We propose two new enhancements for the WAVE protocol stack to favor the dissemination of safety messages in multi-channel VANETs. The suggested algorithms are shown to greatly improve packet delivery ratio and delay of safety applications in single and multi-hop topologies, while preserving the synchronization scheme of the IEEE 1609.4 protocol.