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Marginal and average weight-enabled data aggregation mechanism for the resource-constrained networks
Computer Communications ( IF 4.5 ) Pub Date : 2021-04-24 , DOI: 10.1016/j.comcom.2021.04.004
Syed Roohullah Jan , Rahim Khan , Fazlullah Khan , Mian Ahmad Jan , Mohamamd Dahman Alshehri , Venki Balasubramaniam , Paramjit S. Sehdev

In Wireless Sensor Networks (WSNs), data redundancy is a challenging issue that not only introduces network congestion but also consumes a considerable amount of sensor node resources. Data redundancy occurs due to the spatial and temporal correlation among the data gathered by the neighboring nodes. Data aggregation is a prominent technique that performs in-network filtering of the redundant data and accelerates the knowledge extraction by eliminating the correlated data. However, most of the data aggregation techniques have lower accuracy as they do not cater for erroneous data from faulty nodes and pose an open research challenge. To address this challenge, we have proposed a novel, lightweight, and energy-efficient function-based data aggregation approach for a cluster-based hierarchical WSN. Our proposed approach works at two levels, i.e., at the node level and at the cluster head level. At the node level, the data aggregation is performed using Exponential Moving Average (EMA) and a threshold-based mechanism is adopted to detect any outliers for improving the accuracy of aggregated data. At the cluster head level, we have employed a modified version of Euclidean distance function to provide highly-refined aggregated data to the base station. Our experimental results show that our approach reduces the communication cost, transmission cost, energy consumption at the nodes and cluster heads, and delivers highly-refined and fused data to the base station.



中文翻译:

资源受限网络的启用边际和平均权重的数据聚合机制

在无线传感器网络(WSN)中,数据冗余是一个具有挑战性的问题,不仅会导致网络拥塞,而且会消耗大量的传感器节点资源。由于相邻节点收集的数据之间存在空间和时间相关性,因此会发生数据冗余。数据聚合是一项杰出的技术,可以对冗余数据进行网络内过滤,并通过消除相关数据来加速知识提取。但是,大多数数据聚合技术的准确性较低,因为它们无法解决来自故障节点的错误数据,并带来了开放的研究挑战。为了解决这一挑战,我们为基于集群的分层WSN提出了一种新颖,轻便,节能的基于函数的数据聚合方法。我们建议的方法在两个层面上起作用,即 在节点级别和集群头级别。在节点级别,使用指数移动平均值(EMA)进行数据聚合,并采用基于阈值的机制来检测任何异常值,以提高聚合数据的准确性。在簇头级别,我们采用了欧几里德距离函数的修改版本,以向基站提供高度精确的聚合数据。我们的实验结果表明,我们的方法降低了节点和群集头的通信成本,传输成本,能耗,并向基站提供了经过精炼和融合的数据。数据聚合使用指数移动平均值(EMA)进行,并且采用基于阈值的机制来检测任何异常值,以提高聚合数据的准确性。在簇头级别,我们采用了欧几里德距离函数的修改版本,以向基站提供高度精确的聚合数据。我们的实验结果表明,我们的方法降低了节点和群集头的通信成本,传输成本,能耗,并向基站提供了经过精炼和融合的数据。数据聚合使用指数移动平均值(EMA)进行,并且采用基于阈值的机制来检测任何异常值,以提高聚合数据的准确性。在簇头级别,我们采用了欧几里德距离函数的修改版本,以向基站提供高度精确的聚合数据。我们的实验结果表明,我们的方法降低了节点和群集头的通信成本,传输成本,能耗,并向基站提供了经过精炼和融合的数据。

更新日期:2021-04-28
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