车辆自组织网络中使用公交车辆协助的数据分发

Data distribution in vehicle Ad-hoc networks using bus assistance

车辆间联网通信所组成的自组织网络,受到了学术界的广泛关注。由于车辆的动态性和信号覆盖范围的间断连接特性,这类网络的通信行为表现出时延容忍网络的特征。在城市街区中,车辆密度较大。观察到公交车辆行驶轨迹的规律特征,利用网络编码技术,结合携带转发,提出了一种基于公交车辆协助的导向性数据分发算法,实现了在城市街区场景中高效、可靠的协助式数据内容分享。实验表明,在降低网络通信开销的前提下,该方法有效地提高了城市街区中内容分享数据投递的成功率。

Inter-vehicle communications forms vehicle Ad-Hoc networks,which have attracted extensive attention in academia.Due to vehicles＇ dynamic nature and the intermittent connection of the signal coverage,the communication behaviors of such networks exhibit the characteristics of the delay tolerant network.Observing the characteristics of buses＇ running tracks in urban blocks where there is high density of vehicles,and using the network coding technology and the carry forward method,we propose a data distribution algorithm based on bus assistance to achieve efficient and reliable content sharing.Experiments show that,under the premise of reducing network traffic overhead,the algorithm can effectively improve the delivery success rate of the content sharing data in urban blocks.