Abstract
As modern mobile devices are often equipped with a WLAN interface and many buildings are equipped with a WLAN infrastructure, WLAN could be used for localization. The aim of this work is to investigate the quality of different indoor positioning methods based on values of WLAN received signal strength index (RSSI) using commercially available devices (smart phones, personal digital assistants). Three positioning algorithms were considered: minimal Euclidian distance, intersections of RSSI-Isolines and a stochastic model based on Bayes' theorem. A measuring test bed within an empty seminar room, four different types of personal digital assistants (Dell, Fujitsu, HP, T-Mobile) and two types of access points (Netgear, Lancom) were used. No modification of hardware and software was conducted. Furthermore this paper shows how WLAN localization can be applied in a museum guide application. This paper also shows the visualization of spatial user position frequency pattern during a field trial within a museum.
Highlights
For Location Based Services it is essential to know the current position of the user
As modern mobile devices are often equipped with a wireless local area network (WLAN) interface and many buildings are equipped with a WLAN infrastructure, WLAN could be used for localization
The aim of this work is to investigate the quality of different indoor positioning methods based on values of WLAN received signal strength index (RSSI) using commercially available devices
Summary
For Location Based Services it is essential to know the current position of the user. Depending on the application the needed accuracy differs from less than one meter to some hundred meters. For outdoor applications satellite positioning systems or localization within cellular networks (e.g. cell of origin) can be used. Indoors satellite positioning systems do not work. Localization based on cellular networks requires a mobile device with an appropriate communication interface (GSM/UMTS) and an appropriate SIM card which leads to additional costs. For location based museum guide applications the current user position is needed as accurate as possible
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
