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Connectivity Maintenance for Next-Generation Decentralized Vehicle Platoon Networks
IEEE/ACM Transactions on Networking ( IF 3.7 ) Pub Date : 2020-05-06 , DOI: 10.1109/tnet.2020.2986252
Ankur Sarker , Chenxi Qiu , Haiying Shen

Always keeping a certain distance between vehicles in a platoon system is important for collision avoidance. Centralized platoon systems let the leader vehicle determine and notify the velocities of all the vehicles in the platoon. Unfortunately, such a centralized method generates high packet drop rate and communication delay due to the leader vehicle’s limited communication capability. Therefore, we propose a decentralized platoon network, in which each vehicle determines its velocity by only communicating with the vehicles in a short range. However, the multiple simultaneous transmissions between different pairs of vehicles may interfere with each other. By leveraging a typical feature of a platoon, we devise a channel allocation algorithm, called the Fast and Lightweight Autonomous channel selection algorithm (FLA), in which each vehicle determines its channel simply based on its distance to the leader vehicle. We also devise a strategy, in which a succeeding vehicle uses its stored common velocity profile when it is disconnected from its preceding vehicle and then adjusts its velocity once the connection is built. We conduct experiments on NS-3 and Matlab to evaluate the performance of our proposed methods and implement a real-world prototype by equipping vehicles with Android mobile devices. The experimental results demonstrate the superior performance of our decentralized platoon network over the previous centralized platoon networks.

中文翻译:

下一代分散式汽车排网络的连接性维护

排系统中的车辆之间始终保持一定距离对于避免碰撞很重要。集中式排系统使领导车辆能够确定并通知排中所有车辆的速度。不幸的是,由于领导者车辆的有限通信能力,这种集中式方法产生高分组丢失率和通信延迟。因此,我们提出了一种分散式排网,其中每个车辆仅通过与短距离车辆通信来确定其速度。然而,不同的车辆对之间的多个同时变速器可能彼此干扰。通过利用排的典型功能,我们设计了一种通道分配算法,称为快速轻量级自主通道选择算法(FLA),其中,每辆车仅根据其与引导车的距离确定其通道。我们还设计了一种策略,其中,当后车与前车断开连接时,它使用其存储的公共速度曲线,并在建立连接后调整其速度。我们在NS-3和Matlab上进行实验,以评估我们提出的方法的性能,并通过为车辆配备Android移动设备来实现真实世界的原型。实验结果表明,与以前的集中式排网相比,我们的分散式排网具有更高的性能。其中,当后车与前车断开连接时,它使用其存储的公共速度曲线,一旦建立连接,便调整其速度。我们在NS-3和Matlab上进行实验,以评估我们提出的方法的性能,并通过为车辆配备Android移动设备来实现真实世界的原型。实验结果表明,与以前的集中式排网相比,我们的分散式排网具有更高的性能。其中,当后车与前车断开连接时,它使用其存储的公共速度曲线,一旦建立连接,便调整其速度。我们在NS-3和Matlab上进行实验,以评估我们提出的方法的性能,并通过为车辆配备Android移动设备来实现真实世界的原型。实验结果表明,与以前的集中式排网相比,我们的分散式排网具有更高的性能。
更新日期:2020-05-06
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