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首页> 外文会议>Sensor, Mesh and Ad Hoc Communications and Networks Workshops, 2009. SECON Workshops '09 >Geometry-aware Probabilistic Communications for Urban Vehicular Ad Hoc Networks
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Geometry-aware Probabilistic Communications for Urban Vehicular Ad Hoc Networks

机译：城市车辆自组织网络的几何感知概率通信

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摘要

Safety message exchange embodies a crucial proportion of inter-vehicle communications in Vehicular Ad Hoc Networks. In prior studies, direct single-hop broadcast seems a promising approach for simple transportation networks such as highways. In urban areas the geometry of roads and the placement of obstacles plays an important role in determining the efficient communication strategy. Here, due to the high penetration loss of the 5.9 GHz. wave passing through obstacles, single-hop communications between non-line-of-sight vehicles is not always the best choice. In this study we utilize geometric concepts to deploy appropriate power and hop control schemes for such environments. That is, based on the local geometry observed by the vehicle, it probabilistically decides on a single or multi-hop strategy upon each of its retransmission opportunities. As we shall see, the probabilistic decision on single or multi hop communications is proposed to allow for efficient delay- capacity tradeoffs in such environments.
机译：安全消息交换体现了车辆自组织网络中车辆间通信的关键部分。在先前的研究中，直接单跳广播对于简单的交通网络（如高速公路）似乎是一种有前途的方法。在城市地区，道路的几何形状和障碍物的位置在确定有效的通信策略中起着重要作用。在此，由于5.9 GHz的高穿透损耗。由于波涛越过障碍物，非视距车辆之间的单跳通信并不总是最佳选择。在这项研究中，我们利用几何概念来为此类环境部署适当的功率和跳频控制方案。即，基于车辆观察到的局部几何形状，其根据其每个重传机会概率地决定单跳或多跳策略。正如我们将看到的那样，提出了有关单跳或多跳通信的概率决策，以便在这种环境下进行有效的延迟容量折衷。

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