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Energy-aware node selection scheme with friendly jamming technique for enhancing the secrecy of wireless powered sensor networks
Ad Hoc Networks ( IF 4.8 ) Pub Date : 2021-03-23 , DOI: 10.1016/j.adhoc.2021.102498
Mohamed A. Aboulhassan , Ahmed H. Abd El-Malek

This work studies the secrecy performance of wireless powered sensor networks (WPSNs) under eavesdropping attacks by proposing an energy-aware node selection algorithm. The non-identical N sensor nodes harvest the required energy from a dedicated power station and use it for data transmission to a certain destination. The nodes selection procedure takes place over two phases. In the first phase, K nodes out of the total number of N nodes are selected under the condition that they succeed to harvest sufficient energy for transmission from the power station. In the second phase, among the selected K nodes from the first phase, two nodes are chosen in each time slot. The node with best channel conditions is selected for data transmission to the base station, while the other node that has the worst channel state acts as a cooperative jammer for the eavesdropper. We derive exact and asymptotic closed-form expressions for the secrecy outage probability (SOP) over Nakagami-m fading channels. Moreover, a power allocation problem is formulated to get the optimal uplink power values by minimizing the exact SOP expression using particle swarm optimization (PSO). Numerical results are obtained to validate our proposed model, followed by the conclusion to show its effectiveness.



中文翻译:

具有友好干扰技术的能量感知节点选择方案可增强无线传感器网络的保密性

这项工作通过提出一种能量感知节点选择算法,研究了窃听攻击下无线传感器网络(WPSN)的保密性能。不相同ñ传感器节点从专用电站收集所需的能量,并将其用于将数据传输到特定的目的地。节点选择过程分为两个阶段。在第一阶段,ķ 总节点数 ñ在成功收集到足够的能量以从电站传输的条件下选择节点。在第二阶段,选择ķ从第一阶段开始,在每个时隙中选择两个节点。选择具有最佳信道条件的节点以将数据传输到基站,而另一个具有最差信道状态的节点则充当窃听者的协作干扰器。我们推导出Nakagami-上的秘密中断概率(SOP)的精确渐近闭式表达式。衰落的频道。此外,制定了功率分配问题,以通过使用粒子群优化(PSO)最小化精确的SOP表达式来获得最佳的上行链路功率值。数值结果验证了我们提出的模型的有效性,随后的结论表明了该模型的有效性。

更新日期:2021-03-23
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