Abstract
WiFi Fingerprinting techniques are widely used for indoor localization needs, due to better accuracy guarantees. However, the accuracy is limited by the freshness of the radio map, which is used for localization. Over time this radio map might be incompatible due to the changes in signal strength, a consequence of the dynamic nature of the environment. Therefore, repeated radio map calibration becomes a necessity. Currently radio maps are either manually calibrated, use additional infrastructure or complex algorithms to account for the radio map errors. There is therefore a need for a methodology to update the radio map with minimal additional overhead. This paper proposes a crowdsourcing approach which uses data collected from users of the localization system to maintain the freshness of the radio map. This approach leverages inertial sensors present in commonly used handheld devices, like mobile phones and tablets using which, a trajectory of the path of each user is computed. This trajectory is then coupled with the knowledge of the physical map under consideration to get the real time Received Signal Strength Indicator (RSSI) values at the reference points (RPs). A novel cluster based RSSI propagation policy is proposed where the real time RSSI values obtained are propagated within the clusters. Extensive experiments of our localization system implemented in a real indoor environment shows that this approach maintains radio map freshness while keeping the cost of update low and without need for extra infrastructure.
This work has been funded in part by DST(India) grant DyNo. 100/IFD/2764/2012-2013.
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References
Rai, A., Chintalapudi, K.K., Padmanabhan, V.N., Sen, R.: Zee: Zero-Effort Crowdsourcing for Indoor Localization. In: MOBICOM 2012, Proceedings of the 18th Annual International Conference on Mobile Computing and Networking, pp. 293–304. ACM (2012)
Chuan, H.F., Bose, A.: A Practical Path Loss Model For Indoor WiFi Positioning Enhancement. In: ICICS 2007, Proceedings of 6th International Conference on Information, Communications and Signal Processing, pp. 1–5. IEEE Press (2007)
Radu, V., Marina, M.K.: HiMLoc: Indoor Smartphone Localization via Activity Aware Pedestrian Dead Reckoning with Selective Crowdsourced WiFi Fingerprinting. In: Proceedings of the 4th International Conference on Indoor Positioning and Indoor Navigation. IEEE Press (2013)
Sungwon, Y., Dessai, P., Verma, M., Gerla, M.: FreeLoc: Calibration-Free Crowdsourced Indoor Localization. In: Proceedings of INFOCOM 2013, pp. 2481–2489. IEEE Press (2013)
Ni, L.M., Yunhao, L., Yiu, C.L., Patil, A.P.: LANDMARC: indoor location sensing using active RFID. In: Proceedings of the First IEEE International Conference on Pervasive Computing And Communications, pp. 407–415. IEEE Press (2003)
Jie, Y., Qiang, Y., Ni, L.M.: Learning Adaptive Temporal Radio Maps for Signal-Strength-Based Location Estimation. IEEE Transactions on Mobile Computing 7(7), 869–883 (2008)
Ledlie, J., Jun-geun, P., Curtis, D., Cavalcante, A., Camara, L., Costa, A., Vieira, R.: Mol: a Scalable, User-Generated WiFi Positioning Engine. In: International Conference on Indoor Postioning and Indoor Navigation, pp. 55–80. IEEE Press (2011); Journal of Location Based Services 6(2) 2011
Youssef, M., Agrawala, A.: The Horus WLAN location determination system. In: MobiSys 2005: Proceedings of the 3rd International Conference on Mobile Systems, Applications, and Services, pp. 205–218. ACM, New York (2005)
Fox, D., Hightower, J., Liao, L., Borriello, G., Schulz, D.: Bayesian Filtering for Location Estimation. Pervasive Computing 2, 24–33 (2003)
Krishnan, P., Krishnakumar, A.S., Ju, W.-H., Mallows, C., Gamt, S.N.: A system for LEASE: location estimation assisted by stationary emitters for indoor RF wireless networks. In: INFOMCOM 2004, Twenty-third Annual Joint Conference of the IEEE Computer and Communications Societies, vol. 2, pp. 1001–1011 (2004)
Bahl, P., Padmanabhan, V.N.: RADAR: an in-building RF-based user location and tracking system. In: INFOCOM 2000 Proceedings of the IEEE Nineteenth Annual Joint Conference of the IEEE Computer and Communications Societies, vol. 2, pp. 775–784. IEEE Press (2000)
Kaemarungsi, K., Krishnamurthy, P.: Properties of indoor received signal strength for wlan location fingerprinting. In: The First Annual International Conference on Mobile and Ubiquitous Systems: Networking and Services, MOBIQUITOUS 2004, pp. 14–23. ACM (August 2004)
Goldsmith, A.: Wireless Communications, 1st edn. Cambridge University Press (2005)
Liu, H., Darabi, H., Nanerjee, P., Liu, J.: Survey of Wireless Indoor Positioning Techniques and Systems. IEEE Transactions on Systems, Man and Cybernetics Part C: Applications and Reviews 37(6), 1067–1080 (2007)
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Krishnan, P., Krishnakumar, S., Seshadri, R., Balasubramanian, V. (2014). A Robust Approach for Maintenance and Refactoring of Indoor Radio Maps. In: Guo, S., Lloret, J., Manzoni, P., Ruehrup, S. (eds) Ad-hoc, Mobile, and Wireless Networks. ADHOC-NOW 2014. Lecture Notes in Computer Science, vol 8487. Springer, Cham. https://doi.org/10.1007/978-3-319-07425-2_27
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DOI: https://doi.org/10.1007/978-3-319-07425-2_27
Publisher Name: Springer, Cham
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