Optimized Spatial CSMA for VANETs: A Comparative Study using a Simple Stochastic Model and Simulation Results

Abstract : The high densities of network nodes has made spatial reuse an essential characteristic of modern wireless networks. In this paper, we evaluate the maximum throughput of Carrier Sense Multiple Access (CSMA) for Vehicular Ad-hoc Networks (VANETs) when spatial reuse is taken into account. We begin our study by extending a simple stochastic model in order to fit a VANET pattern and to obtain the spatial density of throughput in terms of the main network parameters. This model uses a Matern selection process with a random pattern of nodes distributed as a Poisson Point Process (PPP). Each node of the process receives a random mark and the nodes that have the smallest mark in their neighborhood are elected for transmission. We study both 1D and 2D network cases with an SIR (Signal over Interference Ratio) model. In order to verify the correctness of the model, extensive simulations are carried out using two simulation platforms: the network simulator, ns-3, and a simulator which is dedicated to CSMA systems. Fairly good matching between the results of the model and those obtained from simulators are observed, confirming the reliability of the theoretical model. Although the results did not perfectly match due to the number of assumptions made for the model, the results obtained nonetheless show the potential for a significant improvement in the overall throughput for VANETs and similar distributed networks.
Type de document :
Communication dans un congrès
CCNC 2017. 8-11 january 2017. Las Vegas. , Jan 2017, Las Vegas, United States. Proceedings of CCNC 2017
Liste complète des métadonnées

Littérature citée [12 références]  Voir  Masquer  Télécharger

https://hal.archives-ouvertes.fr/hal-01379978
Contributeur : Paul Muhlethaler <>
Soumis le : mercredi 12 octobre 2016 - 11:38:32
Dernière modification le : jeudi 26 avril 2018 - 10:28:15
Document(s) archivé(s) le : samedi 4 février 2017 - 19:39:55

Fichier

simu_csma2.pdf
Fichiers produits par l'(les) auteur(s)

Licence


Copyright (Tous droits réservés)

Identifiants

  • HAL Id : hal-01379978, version 1

Citation

Younes Bouchaala, Paul Muhlethaler, Oyunchimeg Shagdar, Nadjib Achir. Optimized Spatial CSMA for VANETs: A Comparative Study using a Simple Stochastic Model and Simulation Results. CCNC 2017. 8-11 january 2017. Las Vegas. , Jan 2017, Las Vegas, United States. Proceedings of CCNC 2017. 〈hal-01379978〉

Partager

Métriques

Consultations de la notice

396

Téléchargements de fichiers

277