An efficient and reliable multi-hop broadcast protocol considering highly dense vehicle distribution

近年来，车辆自组织网络（VANETs）因其在智能交通系统中的潜在应用而引起了人们的兴趣。在本研究中，我们提出了一种可靠、高效的多跳广播协议，可用于vanet中的紧急消息传递。该协议采用模糊逻辑选择中继节点，综合考虑车间距离、车辆运动和接收信号强度。该协议还使用了有效的重传机制来从丢包中恢复。利用真实世界的车载自组织网络对所提出的协议进行了评估。实验结果表明，该协议具有较高的分组分发率、较低的报文开销和较低的端到端时延。

Vehicular ad hoc networks (VANETs) have been attracting interest in recent years for their potential uses in intelligent transport systems. In this research, we proposed a reliable and efficient multi-hop broadcast protocol which can be used to deliver emergency messages in VANETs. The proposed protocol selects relay nodes by employing a fuzzy logic to jointly consider inter-vehicle distance, vehicle movement and received signal strength. The protocol also uses an efficient retransmission mechanism to recover from packet losses. The proposed protocol was evaluated by using a real world vehicular ad hoc network. The experimental results showed that the proposed protocol can provide a high packet dissemination ratio, low message overhead and low end-to-end delay.