A pragmatic approach for effective indoor localization using IEEE 802.11n

Abstract

Wi-Fi based Indoor Localization is commonly used in pervasive systems due to its ease of use and relatively low cost. In recent times, IEEE 802.11n is gaining more attention due to the operation of devices in dual band (2.4GHz and 5 GHz) simultaneously. However the utility of dual band in Wi-Fi indoor localization is still a subject of study and has not been widely implemented. The focus of this paper is to evaluate the feasibility of using both these bands by comparing their indoor localization performance using fingerprinting techniques in a real indoor environment. The effects of interference and localization accuracy are the subject of the experimental study. Based on the study, we propose intelligent policies which effectively utilize the advantages of both the bands. Our experiments and analysis have demonstrated the effectiveness of our policies in improving the accuracy of indoor localization.