WiFi AP-RSS Monitoring Using Sensor Nodes toward Anchor-Free Sensor Localization
WiFi AP-RSS Monitoring Using Sensor Nodes toward Anchor-Free Sensor Localization
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DOI：
10.1109/vtcfall.2015.7391191
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
S. Ishida;Kousaku Izumi;S. Tagashira;Akira Fukuda
中科院分区：
文献类型：
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作者：
S. Ishida;Kousaku Izumi;S. Tagashira;Akira Fukuda
由于GPS在室内环境中是不可用的，传感器定位是建立大规模室内传感器网络时的一个大问题。为了解决传感器定位问题，已经提出了许多室内定位系统，但需要用户的配合或多个锚节点。在本文中，我们提出了一种使用WiFi ap作为锚点的传感器定位系统。WiFi ap大多安装在室内环境中，由网络系统管理员进行管理。使用WiFi ap作为锚点，我们可以在不部署新锚点的情况下定位传感器节点。作为传感器定位系统的第一步，本文提出了一种利用传感器节点的WiFi AP-RSS监测系统。传感器节点采用IEEE802.15.4 （ZigBee）模块，不能解调WiFi （IEEE802.11）信号。因此，我们在传感器节点上开发了一种跨技术的信号提取方案。本文描述了我们的AP-RSS监测系统的设计和实现。实验结果表明，该系统在平均误差为1.26dB的情况下，成功地提取了AP-RSS。
Sensor localization is one of the big problems when building large scale indoor sensor networks since GPS is unavailable in indoor environments. Many indoor localization systems have been proposed to tackle the sensor localization problem, yet user cooperation or many anchor nodes are required. 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 without newly deployed anchor nodes. 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 IEEE802.15.4 (ZigBee) modules, which cannot demodulate WiFi (IEEE802.11) signals. We therefore developed a cross-technology signal extraction scheme on sensor nodes. We herein describe the design and implementation of our AP-RSS monitoring system. The experimental evaluations show that our AP-RSS monitoring system successfully retrieves AP-RSS with an average error of 1.26dB.