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http://dx.doi.org/10.7840/kics.2015.40.8.1643

Indoor Wi-Fi Localization with LOS/NLOS Determination Scheme Using Dual-Band AP  

Kim, Kangho (School of Electrical Engineering, Korea University)
Lee, Suk Kyu (School of Electrical Engineering, Korea University)
Jung, Jongtack (School of Electrical Engineering, Korea University)
Yoo, Seungho (School of Electrical Engineering, Korea University)
Kim, Hwangnam (School of Electrical Engineering, Korea University)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.40, no.8, 2015 , pp. 1643-1654 More about this Journal
Abstract
With standardization of IEEE 802.11n, APs with the 2.4GHz and 5GHz dual-band capability have widely been deployed over a metropolitan area by individuals and internet service providers. Moreover, due to the increasing attentions on indoor-localization technique using Wi-Fi, the need for LOS and NLOS determination scheme is increasing to enhance accuracy of the localization. In this paper, we propose a novel LOS/NLOS determination technique by using different radio attenuation characteristics in different frequency bands and different mediums. Based on this technique, we designed a LOS/NLOS-aware indoor localization scheme. The proposed LOS/NLOS determination algorithm can be used when the distance between an user device and an AP is unknown, and the proposed localization scheme provides very accurate room-level position information. We validated the proposed scheme by implementing it on Android smart phones.
Keywords
Indoor localization; Dual-band AP; Wi-Fi; LOS/NLOS; Smartphone;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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