Indoor Navigation for Mobile Devices using Augmented Reality with Wi-Fi RTT

Indoor Positioning (IP) technology aids in providing location-based services within a campus. Indoor navigation applications are deployed in universities, airports, hospitals, shopping malls and railway stations to guide visitors. 2D navigation map is not sufficient to guide users inside campus because it is difficult to implement in a multi-floor environment. Similarly, Global Positioning System (GPS) for indoors particularly in multi-storeyed structures is inadequate for producing consistent positional data. As Wi-Fi-based positioning involves low hardware installation cost and high availability, it is widely used within buildings. In this paper, a simple and cost-effective Augmented Reality (AR)-based navigation application is designed to guide users within a campus with multiple floors. The proposed system uses Wi-Fi Round Trip Time (RTT) technology available in smart phone along with AR technology to locate users and provide immersive navigation experience to users. Investigations are performed within college campuses with multi-storey buildings. The accuracy is about 4–6 m along the pathway to the destination.