A context-aware pedestrian navigation system

Today’s internet and wireless networks have been improved and it has been possible to use various sensors like GPS and Accelerometer in mobile devices. Also considering other improvements of mobile devices, these devices have being changed from toys into tools. Mobile navigation services are those of the applications that help users in navigation process through determination their current location. Being of users in different contexts influences the way of presenting services, since different contexts need different navigation. In this paper, pedestrian navigation services have been classified into five categories: Location Finding, Optimal Path Finding, Orientation, Positioning and Way-finding. Regarding analyses and surveys, all current navigation services can be one of these categories. Also by specifying of effective contexts in pedestrian navigation we considered four abstract classes: Mobile, Mobile Infrastructure, Movement and Motivation. Each of these classes has its own subclasses. The subclasses have their own attributes and methods that in action demonstrate effective contexts and some procedures of usingthem in pedestrian navigation systems. Considering some of usable and sensible contexts, we implemented a context-aware outdoor pedestrian navigation system. Our empirical implementation and its surveys corroborate the theoretical model for the context-aware map presentation in a pedestrian navigation system.