Novel Network Configuration and its Clustering Scheme for Wireless Powered Sensor Networks
Novel Network Configuration and its Clustering Scheme for Wireless Powered Sensor Networks
复制标题
无线供电传感器网络的新型网络配置及其集群方案
DOI：
10.1109/vtc2021-spring51267.2021.9448989
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Kazuo Mori
中科院分区：
文献类型：
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作者：
Kazuhisa Hraguchi;Kosuke Sanada;Hiroyuki Hatano;Kazuo Mori
在无线传感器网络（WSN）中，无线功率传输（WPT）已被研究作为延长网络寿命的能量收集技术。 WPT可以无线地向传感器节点(SN)提供电源，然而，SN处的接收功率取决于与WPT设备的距离，导致SN之间的功率接收不均匀。对于固定位置的WPT设备，远离WPT设备的SN会受到电力接收不足的影响。针对这一问题，本文提出了一种新颖的网络配置，引入多个混合接入点（HAP），其配备数据收集和中继传输（CH功能）和WPT两种功能，然后，其中一个HAP交替提供这两种功能。通过周期性轮换具有WPT功能的CH，可以改变WPT设备的位置，从而减少SN之间电力接收的不均匀性。本文还提出了一种考虑节点剩余功率的聚类方案，以减少节点的功率损耗。仿真结果表明，与传统系统相比，所提出的系统减少了SN处的功耗并提高了数据收集率。
In wireless sensor networks (WSNs), wireless power transfer (WPT) has been studied as energy harvesting technique for prolonging their network lifetime. The WPT can supply power resource to sensor nodes (SNs) wirelessly, however, the reception power at the SNs depends on the distance from a WPT equipment, leading to the non-uniformity in the power reception among the SNs. For the fixed-located WPT equipment, the SNs distant from the WPT equipment suffer from insufficient power reception. Against this problem, this paper proposes novel network configuration introducing multiple hybrid access points (HAPs), which equip two functions of data collection and relay transmission (CH function) and WPT, and then, one of HAPs provides these both functions alternately. By periodically rotating the CH with the WPT function, the location of the WPT equipment can be changeable, which reduces the non-uniformity in the power reception among SNs. This paper also proposes a clustering scheme considering the residual power at SNs to reduce their power depletion. The simulation results show that the proposed system reduces power depletion at the SNs and improves the data collection rate compared with the conventional systems.