Design of WiFi AP-RSS Monitoring System Using Sensor Nodes
Design of WiFi AP-RSS Monitoring System Using Sensor Nodes
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DOI：
10.1109/candar.2015.54
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发表时间：
2015-12
期刊：
影响因子：
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通讯作者：
Kousaku Izumi;S. Ishida;S. Tagashira;Akira Fukuda
中科院分区：
文献类型：
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作者：
Kousaku Izumi;S. Ishida;S. Tagashira;Akira Fukuda
由于室内环境无法使用GPS，传感器定位是构建大规模室内传感器网络时面临的一个重要问题。在本文中，我们提出了一个传感器定位系统使用WiFi AP作为锚。WiFi AP主要安装在室内环境中，并由网络系统管理器进行管理。使用WiFi AP作为锚点，我们可以定位传感器节点，既没有新部署的锚节点，也没有用户合作。作为我们的传感器定位系统的第一步，本文提出了一个WiFi AP-RSS监测系统使用传感器节点。传感器节点配备ZigBee（IEEE 802.15.4）模块，其不能解调WiFi（IEEE 802.11）信号。因此，我们开发了一个跨技术的信号提取计划与AP识别计划的传感器节点。本文描述了我们的AP-RSS监控系统的设计和实现。实验结果表明，所提出的AP-RSS监测系统能够成功识别WiFi接入点，检测误差小于10%。我们还证实，拟议的系统监测AP-RSS的平均误差为1.26dB。
Sensor localization is one of the big problems when building large scale indoor sensor networks because GPS is unavailable in indoor environments. In this paper, we propose a sensor localization system using WiFi APs as anchors. WiFi APs are largely installed in indoor environments and are managed by a network system manager. Using WiFi APs as anchors, we can localize sensor nodes with neither newly deployed anchor nodes nor user cooperation. As a first step of our sensor localization system, this paper presents a WiFi AP-RSS monitoring system using sensor nodes. Sensor nodes are equipped with ZigBee (IEEE 802.15.4) modules, which cannot demodulate WiFi (IEEE 802.11) signals. We therefore developed a cross-technology signal extraction scheme with an AP recognition scheme on sensor nodes. We herein describe the design and implementation of our AP-RSS monitoring system. The experimental evaluations demonstrated that the proposed AP-RSS monitoring system successfully recognized WiFi APs with detection errors less than 10%. We also confirmed that the proposed system monitored AP-RSS with an average error of 1.26dB.