Why (n + 1)th-hop neighbours are more important than nth-hop ones for localisation in multi-hop WSNs

Why (n + 1)th-hop neighbours are more important than nth-hop ones for localisation in multi-hop WSNs
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为什么在多跳 WSN 中,第 (n 1) 跳邻居比第 n 跳邻居更重要

DOI:
10.1049/el.2014.2969
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发表时间:
2014-10
影响因子:
1.1
通讯作者:
Qian Luo
Qian Luo
中科院分区:
工程技术4区
文献类型:
--
作者:
Liangyin Chen;Xunde Xiong;Yanru Chen;Kai Liu;Jingyu Zhang;Yushi Jiang;Feng Yin;Qian Luo

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对于无线传感器网络(WSN)中的无距离定位,过去未知节点的间接锚定邻居的重要性被低估了。在此报告的工作中,对于未知节点,我们证明了它的(n + 1)th-hop锚邻居比它的n -hop锚邻居更有用。通过理论模型分析未知节点的可能定位区域(PLA),发现PLA与跳数呈负相关,这表明(n + 1)th-hop锚邻居可以提供更多的信息,从而更准确地定位未知节点。同时,理论模型的收敛性意味着定位精度不能随着跳数的增加而无限提高。仿真结果验证了所提理论的正确性。
For range-free localisation in a wireless sensor network (WSN), the importance of indirect anchor neighbours of an unknown node has been underestimated in the past. In this reported work, for the unknown node, we show that its (n + 1)th-hop anchor neighbours are more useful than its nth-hop ones. By employing a theoretical model to analyse the possible localisation area (PLA) of the unknown node, it is found that the PLA and the hop count are negatively correlated, which indicates that (n + 1)th-hop anchor neighbours can provide more information to more accurately localise the unknown node. Meanwhile, the property of convergence of the theoretical model means that localisation accuracy cannot be unlimitedly improved with increasing hop counts. In the simulations, the presented theory is verified.
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