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首页> 外文期刊>International journal of communication systems >Handling high mobility in next-generation wireless ad hoc networks
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Handling high mobility in next-generation wireless ad hoc networks

机译：在下一代无线ad hoc网络中处理高移动性

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摘要

Next-generation ad hoc networks need to be able to handle high mobility in order to support a wide range of emerging applications such as vehicular networks. Maintaining communication links of an established communication path that extends between source and destination nodes is a significant challenge in mobile ad hoc networks due to the movement of the mobile nodes. In particular, such communication links are often broken under a high mobility environment. Although a new communication route can be established when a break in the communication path occurs, repeatedly reestablishing new routes incurs delay and substantial overhead. To address this limitation, we introduce the Virtual Router abstraction in this paper. A virtual router is a dynamically created logical router that is associated with a particular geographical area. Its routing functionality is provided by the physical nodes (i.e. mobile devices) currently within the geographical region served by the virtual router. These physical nodes take turns in forwarding data packets for the virtual router. In this environment, data packets are transmitted from a source node to a destination node over a series of virtual routers. Since virtual routers do not move, this scheme is much less susceptible to node mobility. We give simulation results to demonstrate the effectiveness of this technique in handling high mobility. They show that the Virtual Router approach can achieve several times better performance than the traditional approach based on physical routers (i.e. relay nodes).
机译：下一代自组织网络需要能够处理高移动性，以便支持诸如车辆网络之类的新兴应用。由于移动节点的移动，在源网络和目的节点之间延伸的已建立通信路径的通信链路的维护是移动自组织网络中的重大挑战。特别地，这样的通信链路经常在高移动性环境下断开。尽管当通信路径中断时可以建立新的通信路径，但是重复重建新的路径会导致延迟和大量开销。为了解决此限制，我们在本文中介绍了虚拟路由器抽象。虚拟路由器是与特定地理区域关联的动态创建的逻辑路由器。当前由虚拟路由器服务的地理区域内的物理节点（即移动设备）提供其路由功能。这些物理节点轮流转发虚拟路由器的数据包。在这种环境中，数据包通过一系列虚拟路由器从源节点传输到目标节点。由于虚拟路由器不会移动，因此该方案不太容易受到节点移动性的影响。我们给出的仿真结果证明了该技术在处理高机动性方面的有效性。他们表明，虚拟路由器方法可以实现比基于物理路由器（即中继节点）的传统方法更好的性能。

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  • 来源
    《International journal of communication systems》 |2010年第10期|P.1078-1092|共15页
  • 作者

    Ai Hua Ho; Yao Hua Ho; Kien A. Hua;

  • 作者单位

    School of Electrical Engineering and Computer Science, University of Central Florida, Orlando, FL, U.S.A.;

    rnSchool of Electrical Engineering and Computer Science, University of Central Florida, Orlando, FL, U.S.A.;

    rnSchool of Electrical Engineering and Computer Science, University of Central Florida, Orlando, FL, U.S.A.;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    link break; mobile ad hoc networks; node mobility; virtual router;

    机译：链接中断;移动自组织网络;节点移动性虚拟路由器;

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