A Dynamic Navigation System Based on User’s Geographical Situation

With remarkable advances of portable computers, users can move around various places with computers in order to achieve their objectives. This paper discusses a dynamic route navigation system which can cope with various kinds of users’ situations, e.g., objectives, profiles, current locations, histories of activities and surrounding status of users. Based on these situations, the system continuously generates users’ action plans in order to navigate to places where the users should visit. In order to obtain the situations effectively, a hierarchical wireless network model is proposed. By utilizing the mobile network, users can acquire information around them and interact with their surroundings. Functions of geographic database systems are employed to visualize the action plans effectively on the small sized display of portable computers. As an example of proposed system, this paper shows navigation system for shopping district where various kinds of shops and many people exist. How to cope with dynamic change of user’s situations in shown for this particular example.