MMLOC: multi-mode indoor localization system based on smart access points
MMLOC: multi-mode indoor localization system based on smart access points
复制标题
MMLOC:基于智能接入点的多模式室内定位系统
DOI:
10.1145/3360774.3360776
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Nahrstedt, Klara
中科院分区:
文献类型:
--
作者:
Yu, Tuo;Ren, Wenyu;Nahrstedt, Klara
Indoor localization based on Wi-Fi fingerprints has been an active research topic for years. However, existing approaches do not consider the instability of access points (APs) which may be unreliable in practice, particularly the ones deployed by individual users. This instability impacts the localization accuracy severely, due to the unreliable or even wrong Wi-Fi fingerprints. Ideally, the localization should be done using only the well-deployed APs (e.g., deployed by facility teams). However, in many places the number of these APs is too few to achieve a good localization accuracy. To solve this problem, we leverage emerging smart APs equipped with multi-mode antennas, and build a new indoor localization system called MMLOC to reduce the number of necessary APs. The key idea is controlling the modes of AP antennas to generate more fingerprints with fewer APs. A clustering based localization strategy is designed to enable a mobile terminal to figure out the RSSI (Received Signal Strength Indicator) for different antenna modes without requiring any synchronization. We have implemented a prototype system using smart APs and commercial smartphones. Experimental results demonstrate that MMLOC can reduce the number of necessary APs by 50%, and achieve the same or even better localization accuracy.
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DOI:
10.1007/978-3-642-27491-6_9
发表时间:
2012
期刊:
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影响因子:
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作者:
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2017
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2007
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