Optimized Ad-hoc Multi-hop Broadcast Protocol for Emergency Message Dissemination in Vehicular Ad-hoc Networks

Intelligent Transportation Systems and particularly vehicular adhoc networks (VANETs) play a key role in enabling Smart Cities as well as improving and maintaining road safety. VANETs are distributed networks built from moving vehicles on the road. Each vehicle of the network has an embedded IEEE 802.11p interface to support the interaction between the vehicles and their environment (V2X) and enable Inter Vehicular Communication (IVC). However, due to the instable nature of these networks caused by the high-speed mobility of the vehicles as well as frequent fragmentation and disconnection of the network, it is necessary to design and implement robust and fault tolerant communication protocols especially in the case of emergency situations on the road to rapidly alert the environment and the competent authorities. Moreover, the communication in these networks suffers from limited bandwidth spectrum making information dissemination time critical to achieve fairness toward all the nodes of the network. This paper proposes an optimization of the Ad-hoc Multi-hop Broadcast (AMB) protocol for the dissemination of information and particularly Emergency messages in vehicular ad-hoc networks (VANETs). The proposed solution aims to reduce the network traffic while optimizing the communication time and achieving high reliability for the emergency messages. The performance of the proposed protocol is evaluated on theoretical considerations and numerical calculations

@article{boucetta2022optimized,
  title={Optimized ad-hoc multi-hop broadcast protocol for emergency message dissemination in vehicular ad-hoc networks},
  author={Boucetta, Sara Imene and Johany{'a}k, Zsolt Csaba},
  journal={Acta Polytech. Hung},
  volume={19},
  pages={23--42},
  year={2022}
}