An Empirical Study of the Transmission Power Setting for Bluetooth-Based Indoor Localization Mechanisms.
An Empirical Study of the Transmission Power Setting for Bluetooth-Based Indoor Localization Mechanisms.
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DOI：
10.3390/s17061318
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发表时间：
2017-06-07
期刊：
影响因子：
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通讯作者：
García-Varea I
中科院分区：
文献类型：
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作者：
Castillo-Cara M;Lovón-Melgarejo J;Bravo-Rocca G;Orozco-Barbosa L;García-Varea I
如今，人们对开发精确的无线室内定位机制非常感兴趣，该机制能够实现许多面向消费者的服务。在众多提议中，基于接收信号强度指示（RSSI）的无线室内定位机制正在被广泛探索。大多数研究都集中在评估不同移动设备品牌和无线网络技术的能力。此外，已经提出了不同的参数和算法作为提高基于无线的定位机制的准确性的手段。在本文中，我们重点关注用于实现低功耗蓝牙 4.0 (BLE4.0) 蓝牙定位机制的 RSSI 指纹的调整。按照整体方法，我们首先评估两个蓝牙传感器/接收器设备的功能。然后，我们使用特征选择技术评估在不同传输功率级别运行的每个 BLE4.0 信标报告的 RSSI 指纹的相关性。根据我们的发现，我们使用两种分类算法来改进每个 BLE4.0 信标的传输功率级别的设置。我们的主要发现表明，我们的建议可以通过为每个 BLE4.0 信标设置自定义传输功率级别来极大地提高定位精度。
Nowadays, there is a great interest in developing accurate wireless indoor localization mechanisms enabling the implementation of many consumer-oriented services. Among the many proposals, wireless indoor localization mechanisms based on the Received Signal Strength Indication (RSSI) are being widely explored. Most studies have focused on the evaluation of the capabilities of different mobile device brands and wireless network technologies. Furthermore, different parameters and algorithms have been proposed as a means of improving the accuracy of wireless-based localization mechanisms. In this paper, we focus on the tuning of the RSSI fingerprint to be used in the implementation of a Bluetooth Low Energy 4.0 (BLE4.0) Bluetooth localization mechanism. Following a holistic approach, we start by assessing the capabilities of two Bluetooth sensor/receiver devices. We then evaluate the relevance of the RSSI fingerprint reported by each BLE4.0 beacon operating at various transmission power levels using feature selection techniques. Based on our findings, we use two classification algorithms in order to improve the setting of the transmission power levels of each of the BLE4.0 beacons. Our main findings show that our proposal can greatly improve the localization accuracy by setting a custom transmission power level for each BLE4.0 beacon.