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Documents 一种基于榕树型拓扑的铁路无线Mesh网络结构
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  • Author Author: sophie0love
  • Date Created: 8 Nov 2010 9:30 AM Date Created
  • Last Updated Last Updated: 7 Oct 2021 7:32 AM
  • Views 385 views
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一种基于榕树型拓扑的铁路无线Mesh网络结构

旅客列车Internet应用的需求日趋强烈,而铁路沿线的无线宽带覆盖是实现旅客列车Internet应用的必要条件,也是当前的研究热点.基于这个研究方向,本文提出榕树型拓扑、多跳无线链、节点失效危险度、破坏因子等概念.设计榕树型拓扑的动态最小生成树算法,在此基础上,探讨了榕树型拓扑的网络健壮性;然后基于榕树型拓扑设计一种多出口总线的铁路无线Mesh网络结构和多模Mesh节点结构,设计了微蜂窝部署方案和混合频道复用方案,并就其传输延迟和传输带宽进行探讨和分析;最后基于本文提出的方法,对一段300km长的铁路线进行实例部署规划.理论分析和实例部署规划表明,榕树型拓扑具有较低的传输延迟、较高的传输带宽和较强的网络健壮性,符合铁路无线宽带覆盖的要求.另外,榕树型拓扑只要求在铁路沿线部署若干个有线网络出口,且结构调整灵活,具有很好的可实施性.

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