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DIFTOS: A Distributed Infrastructure-Free Traffic Optimization System Based on Vehicular Ad Hoc Networks for Urban Environments

机译：DIFTOS：一种基于网上环境车辆临时网络的分布式基础架构流量优化系统

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摘要

Aiming to alleviate traffic congestion, many congestion avoidance and traffic optimization systems have been proposed recently. However, most of them suffer from three main problems. Firstly scalability: they rely on a centralized server, which has to perform intensive communication and computational tasks. Secondly unpredictability: they use smartphones and other sensors to detect the congested roads and warn upcoming vehicles accordingly. In other words, they are used to solve the problem rather than avoiding it. Lastly, infrastructure dependency: they assume the presence of pre-installed infrastructures such as roadside unit (RSU) or cellular 3G/4G networks. Motivated by the above-mentioned reasons, in this paper, we proposed a fully distributed and infrastructure-less congestion avoidance and traffic optimization system for VANET (Vehicular Ad-hoc Networks) in urban environments named DIFTOS (Distributed Infrastructure-Free Traffic Optimization System), in which the city map is divided into a hierarchy of servers. The vehicles that are located in the busy road intersections play the role of servers, thus DIFTOS does not rely on any centralized server and does not need internet connectivity or RSU or any kind of infrastructure. As far as we know, in the literature of congestion avoidance using VANET, DIFTOS is the first completely infrastructure-free congestion avoidance system. The effectiveness and scalability of DIFTOS have been proved by simulation under different traffic conditions.
机译：旨在减轻交通拥堵，最近提出了许多拥堵避税和交通优化系统。然而，大多数人都患有三个主要问题。首先可扩展性：它们依赖于集中式服务器，该服务器必须执行密集的通信和计算任务。其次是不可预测的：他们使用智能手机和其他传感器来检测拥挤的道路并相应地推动即将推出的车辆。换句话说，它们用于解决问题而不是避免它。最后，基础设施依赖性：他们假设存在预安装的基础设施，例如路边单元（RSU）或蜂窝3G / 4G网络。在本文中，通过上述原因激励，我们提出了一个名为Diftos（分布式基础设施 - 无流量优化系统的城市环境中的vanet（车辆ad-hoc网络）的完全分布式和基础设施的拥堵避免和交通优化系统，城市地图分为服务器的层次结构。位于繁忙的道路交叉路口的车辆发挥了服务器的作用，因此Diftos不依赖于任何集中式服务器，并且不需要互联网连接或RSU或任何类型的基础架构。据我们所知，在使用VANET的拥堵避免文献中，Diftos是第一个完全基础设施的避免系统。在不同的交通状况下模拟已经证明了Diftos的有效性和可扩展性。

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