title: A design of irregular grid map for large-scale Wi-Fi LAN fingerprint positioning systems.
abstract: The rapid growth of mobile communication and the proliferation of smartphones have drawn significant attention to location-based services (LBSs). One of the most important factors in the vitalization of LBSs is the accurate position estimation of a mobile device. The Wi-Fi positioning system (WPS) is a new positioning method that measures received signal strength indication (RSSI) data from all Wi-Fi access points (APs) and stores them in a large database as a form of radio fingerprint map. Because of the millions of APs in urban areas, radio fingerprints are seriously contaminated and confused. Moreover, the algorithmic advances for positioning face computational limitation. Therefore, we present a novel irregular grid structure and data analytics for efficient fingerprint map management. The usefulness of the proposed methodology is presented using the actual radio fingerprint measurements taken throughout Seoul, Korea.
authors.affiliation: Department of Industrial Engineering, Ajou University, 206 Worldcup-ro, Yeongtong-gu, Suwon 443-749, Republic of Korea.
authors.forename: Jae-Hoon
authors.initials: JH
authors.lastname: Kim
authors.affiliation: International Cooperation Group, Korea Internet & Security Agency, 109 Jungdae-ro, Songpa-gu, Seoul 138-803, Republic of Korea.
authors.forename: Kyoung Sik
authors.initials: KS
authors.lastname: Min
authors.affiliation: Department of Information and Communications Engineering, Sejong University, 98 Gunja-dong, Gwangjin-gu, Seoul 143-747, Republic of Korea.
authors.forename: Woon-Young
authors.initials: WY
authors.lastname: Yeo
mesh_terms: D000465:Algorithms; D003199:Computer Systems; D004574:Electromagnetic Fields; D006801:Humans; D008122:Local Area Networks / Q000295:instrumentation*; D062211:Spatio-Temporal Analysis; D059015:Wireless Technology