With the development of Vehicular ad hoc networks (VANETs), intelligent transportation system is gaining more attention for providing many services. However, mobility characteristic of VANETs causes frequent route disconnection, particularly during the data delivery. Clustering is one of most efficient approaches to achieve stable structure of topology. The real-time applications need the data transmission delay time to be relatively stable. In position based routing with sufficient density in the neighborhood can achieve the above objective easily. In this work, we propose density-connected cluster-based routing (DCCR) protocol, a position based density adaptive clustering oriented routing protocol. The approach maintains the connectivity between two successive forwarders by considering different matrices like density and standard deviation of average relative velocity. The proposed protocol demonstrates improvement in the packet delivery ratio, end-to-end delay compared with existing approaches.

中文翻译：

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车辆自组织网络中基于密度连接的群集的路由协议

随着车辆自组织网络（VANET）的发展，智能交通系统因提供许多服务而受到越来越多的关注。但是，VANET的移动性特征导致频繁的路由断开，尤其是在数据传递期间。聚类是实现拓扑结构稳定的最有效方法之一。实时应用需要数据传输延迟时间相对稳定。在基于位置的路由中，在附近具有足够的密度可以轻松实现上述目标。在这项工作中，我们提出了密度连接的基于簇的路由协议（DCCR），这是一种基于位置的密度自适应聚类的路由协议。该方法通过考虑密度，平均相对速度的标准偏差等不同矩阵来维持两个连续转发器之间的连通性。与现有方法相比，所提出的协议证明了分组传送率，端到端延迟方面的改进。