Development of COEX WiFi APDB: Methodology, Results and Best Practices

U. Ahmad, C.W. Sik, S. Park, L. Dong-Sun

Abstract:	This paper presents the methodology, implementation results and best practices derived from the experience of developing WiFi based indoor positioning system from scratch in one of the largest real world test-beds. We have devised a WiFi positioning system that can locate a target terminal within several meters. The basic concept is akin to the function of Global Positioning System (GPS) where WiFi Access Point (AP) acts as a satellite for the terminal device; however, instead of calculating range between AP and device, it uses an Adaptive Weighted Centroid method for location estimation. The core component of our system is the Access Point Database (APDB) which contains the position information of unknown Access Points deployed by public/private entities. In order to actualize the capability of this system, we developed APDB in COEX Mall and implemented Location Based Services for smart phone users. The results provide important insights into the large scale implementation of WiFi based LBS technology.
Published in:	Proceedings of the 2011 International Technical Meeting of The Institute of Navigation January 24 - 26, 2011 Catamaran Resort Hotel San Diego, CA
Pages:	422 - 426
Cite this article:	Ahmad, U., Sik, C.W., Park, S., Dong-Sun, L., "Development of COEX WiFi APDB: Methodology, Results and Best Practices," Proceedings of the 2011 International Technical Meeting of The Institute of Navigation, San Diego, CA, January 2011, pp. 422-426.
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