软件定义VANET中的移动性管理解决方案

Z. He, Bin Fu, Ao Cao, Jian Yu
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引用次数: 2

摘要

随着城市智能交通系统的发展,车辆自组织网络(vehicle Ad Hoc Network, VANET)对车辆运动过程中的信息交换提出了新的挑战。如何在频繁移动和切换的情况下,以更低的丢包率和延迟提供高质量的网络服务,是当前VANET面临的一个关键挑战。以往的工作主要集中在移动管理中选择固定的转发点或动态选择不同的转发点。不幸的是,这些解决方案中的大多数都会导致三角形路由问题或产生大量的信令开销。他们忽略了动态路由和信令开销的平衡。本文提出了一种在VANET架构中使用动态重复点选择算法的方案,尽可能地重用部分交换机流表,以节省信令成本并降低切换延迟。大量的实验结果表明,该方案节省了切换过程中的信令开销,降低了切换延迟和数据包丢包率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Solution for Mobility Management in Software Defined VANET
With the development of urban intelligent transport system, new challenges are posed for the exchange of information during vehicle movement in the Vehicle Ad Hoc Network (VANET). One critical challenge of today's VANET is how to provide high quality network services with lower packet loss rate and delay in the scenario of frequent movement and handover. Previous work most either focused the mobile management on selecting a fixed point or dynamically select different forwarding points. Unfortunately, most of these solutions cause triangle routing problems or generate a lot of signaling overhead. They overlooked the balance of dynamic routing and signaling overhead. In this paper, we propose a scheme that uses a dynamic repeat point selection algorithm in the VANET architecture, reusing part of the switch's flow tables as much as possible to save signaling cost and reducing handover delay. Extensive experimental results show that this scheme saves signaling overhead during handover, reduces handover delay and the loss rate of data packets.
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