Broadcast Communication in Vehicular Ad-Hoc Network Safety Applications
Résumé
Contention-based protocols for Medium Access Control (MAC) in Vehicular Ad-Hoc Networks (VANET) are currently under development in several standardization organizations. The availability and maturity of the IEEE 802.11 technology makes it the first choice for the future vehicle-to-vehicle communications. At the same time, safety applications in a vehicular environment are expected to intensively use broadcast messages. However, the IEEE 802.11 standard has not been designed for broadcast communication and a number of problems arise from this. In this paper, we analyze the impact of the minimum Contention Window (CW) on the MAC layer performance in a realistic vehicular environment and we propose a simple solution for adapting CW to the network density in order to improve the reception probability of broadcast messages.
Fichier principal
Broadcast_communication_in_Vehicular_Ad-Hoc_Network_safety_applications.pdf (190.3 Ko)
Télécharger le fichier
Origine | Fichiers éditeurs autorisés sur une archive ouverte |
---|