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首页> 外文期刊>IEEE Wireless Communications >RSU-Assisted Geocast in Vehicular Ad Hoc Networks
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RSU-Assisted Geocast in Vehicular Ad Hoc Networks

机译:车载Ad Hoc网络中RSU辅助的Geocast

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摘要

Geocast, delivering a message to nodes within a geographical region, is an important issue in VANETs. In this article, we address the geocast problem in VANETs. Given a piece of a message, we must find the minimal cost to relay the message to a specific vehicle in a given geographical area. To solve this problem, we propose an RSU RAG approach for VANETs. We use a quadtree model that represents a hierarchical decomposition of the global region. Then we propose a tree trimming approach to search the intersection between the destination area and the quadtree. Based on the quadtree model, we propose an election approach that selects an optimal RSU to forward the message to the destination area. Theoretical analysis is given about the complexity to search the quadtree. Extensive simulations show that the performance of our proposed method is superior to other approaches.
机译:向地理区域内的节点传递消息的地理广播是VANET中的重要问题。在本文中,我们解决了VANET中的地理广播问题。给定一条消息,我们必须找到将消息中继到给定地理区域中的特定车辆的最小成本。为了解决这个问题,我们提出了一种用于VANET的RSU RAG方法。我们使用四叉树模型表示全局区域的分层分解。然后,我们提出了一种树修剪方法来搜索目标区域和四叉树之间的交点。基于四叉树模型,我们提出一种选择最佳RSU的选举方法,以将消息转发到目标区域。给出了搜索四叉树的复杂度的理论分析。大量的仿真表明,我们提出的方法的性能优于其他方法。

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