Mobile node aware opportunistic routing in dynamic wireless sensor network

Q4 Computer Science
Lü Xiaojun , Jia Xinchun , Han Zongyuan , Yang Bo , Hao Jun
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引用次数: 1

Abstract

Opportunistic routing (OR) could adapt to dynamic wireless sensor networks (WSNs) because of its inherent broadcast nature. Most of the existing OR protocols focus on the variations of propagation environment which are caused by channel fading. However, a few works deal with the dynamic scenario with mobile nodes. In this paper, a mobile node (MN) aware OR (MN-OR) is proposed and applied to a WSN in the high-speed railway scenario where the destination node is deployed inside a high speed moving train, and the MN-OR not only considers the mobility of node but also utilizes the candidate waiting time induced by the timer-based coordination scheme. Specifically, to reduce the number of duplicate transmissions and mitigate the delay of information transmission, a new selection strategy of the candidate forwarders is presented. In addition, two priority assignment methods of the candidate forwarders are proposed for the general relay nodes (GRNs) and the rail-side nodes (RSNs) according to their different routing requirements. Extensive simulation results demonstrate that the proposed MN-OR protocol can achieve better network performances compared with some existing routing schemes such as the well-known Ad-hoc on-demand distance vector routing (AODV) and the extremely opportunistic routing (ExOR) protocols.

动态无线传感器网络中的移动节点感知机会路由
由于其固有的广播特性,机会路由可以适应动态无线传感器网络。现有的OR协议大多关注信道衰落引起的传播环境的变化。然而,有一些作品涉及移动节点的动态场景。在本文中,提出了一种移动节点感知OR(MN-OR),并将其应用于高速铁路场景中的WSN,其中目的地节点部署在高速移动的列车内,并且MN-OR不仅考虑了节点的移动性,还利用了基于定时器的协调方案引起的候选等待时间。具体地说,为了减少重复传输的次数和减轻信息传输的延迟,提出了一种新的候选转发器的选择策略。此外,针对一般中继节点(GRN)和轨道侧节点(RSN)不同的路由要求,提出了两种候选转发器的优先级分配方法。大量仿真结果表明,与现有的一些路由方案(如众所周知的按需距离矢量路由(AODV)和极端机会路由(ExOR)协议)相比,所提出的MN-OR协议可以获得更好的网络性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
0.50
自引率
0.00%
发文量
1878
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