Abstract
The era of Internet of Things (IoT) has stimulated the diversification of wireless applications, and a pragmatic way is to adopt and leverage WiFi to pinpoint the position of a mobile device. However, there still exist significant challenges in this field, such as heterogeneous crowd-sourced data distribution, external scene interference, etc. We focus on indoor WiFi fingerprint localization in multistory buildings. To confine the search scope to a specific floor, we propose a novel floor identification module. In this module we construct a WiFi fingerprint graph representation to fully explore the correlations of reference points (RP). Furthermore, a fingerprint graph attention mechanism is introduced to capture the importance of adjoining fingerprints for a more accurate floor identification. In addition, a two-panel fingerprint homogeneity graph is adopted to gauge the resemblance of localization fingerprints, and the estimated 2-D location is predicted by the integration of panel results. By comprehensively analyzing the fingerprint attributes of a crowd-sourced database, we have conducted experiments to demonstrate the localization algorithm’s performance. Compared with other algorithms, the results show that the proposed method can achieve the best performance in floor identification, reaching 96.93%; In the aspect of 2-D geometric positioning, the proposed method also has better performance.
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Xing Zhang received his B.Eng. degree from Hunan University of Science and Technology, and an M.E. degree in mechanical engineering from Hunan University, Changsha, China, in 2013 and 2016, respectively. He is currently working towards a Ph.D. degree at the college of Electrical and Information Engineering, Hunan University. His research interests include indoor localization, navigation and evolutionary computation.
Wei Sun received his B.S., M.S., and Ph.D. degrees from the Department of Automation Engineering, Hunan University, China, in 1997, 1999 and 2003, respectively. He is now working as a Professor at the College of Electrical and Information Engineering, Hunan University. His areas of interests are computer vision and robotics, neural networks, and intelligent control.
Jin Zheng received her B.S., M.S., and Ph.D. degrees from the School of Architecture, Hunan University, Changsha, China, in 1998, 2001, and 2019, respectively. She is currently a Lecturer with the School of Architecture and Art, Central South University, Changsha. Her current research interests include building intelligence and intelligent information processing.
Min Xue has been pursuing a Ph.D. degree in control science and engineering since 2017, at Hunan University, Changsha, China. She is also with the Key Laboratory of Intelligent Robot Technology in Electronic manufacturing, Hunan, China. From 2019 to 2021, she is a joint Ph.D. student at the National University of Singapore. Her current research interests include indoor localization, navigation, and intelligent robot.
Chenjun Tang received his B.Eng. degree from Hunan Normal University, and an M.E. degree in control science and engineering from Hunan University, Changsha, China, in 2017 and 2020, respectively. He is currently working towards a Ph.D. degree at the college of Electrical and Information Engineering, Hunan University. His research interests include indoor localization, navigation, and evolutionary computation.
Roger Zimmermann received his M.S. and Ph.D. degrees from the University of Southern California, Los Angeles, CA, USA, in 1994 and 1998, respectively. He is currently an Associate Professor with the Department of Computer Science, National University of Singapore (NUS). He is also a Deputy Director with the Smart Systems Institute (SSI), and previously codirected the Centre of Social Media Innovations for Communities at NUS. He has coauthored a book, seven patents, and more than 200 conference publications, journal articles, and book chapters. His research interests include streaming media architectures, distributed systems, mobile and geo-referenced video management, collaborative environments, spatio-temporal information management, and mobile location-based services. He is a distinguished member of the ACM and a senior member of the IEEE. Further information can be found at http://www.comp.nus.edu.sg/cs/people/rogerz/.
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Zhang, X., Sun, W., Zheng, J. et al. Towards Floor Identification and Pinpointing Position: A Multistory Localization Model with WiFi Fingerprint. Int. J. Control Autom. Syst. 20, 1484–1499 (2022). https://doi.org/10.1007/s12555-020-0978-4
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DOI: https://doi.org/10.1007/s12555-020-0978-4