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JoLo: Multi-Device Joint Localization Based on Wireless Data Fusion

2022; IEEE Computer Society; Volume: 22; Issue: 7 Linguagem: Inglês

10.1109/tmc.2022.3150758

2161-9875

Sok‐Ian Sou, Fang–Jing Wu, Wen-Chun Wu,

Energy Efficient Wireless Sensor Networks

Many indoor localization techniques have been widely investigated. As the proportion of people with multiple mobile devices is increasing, an interesting research challenge arising from this growth is how to integrate data from multiple devices carried by a mobile user for localizing her/him. This work designs a multi-device joint localization system, called JoLo , to realize the idea using a group of off-the-shelf mobile devices carried by a user. The proposed system collects wireless fingerprints at the predefined training locations in the environment. Then, the system fuses the real-time wireless measurements observed by the multiple devices of a user into a summary list for localization reference. Finally, three fusion-based positioning algorithms are proposed to determine the user's location based on the fused summary list. The three proposed algorithms reduce mean distance errors in localization to less than one meter in a lab environment. One of the fusion-based algorithms, namely cluster-based DF algorithm, can even improve the performance by 50% on average compared to the existing single-device localization techniques.