1. 788.11J Presentation “Active Visitor Guidance System”
Presented by Wenjun Gu

2. The Main Idea A sensor field with some danger areas
A user who wants to cross the sensor field with a device that can communicate with sensors
Guide a user across a sensor field away from danger area

3. The Main Achievements Use potential field as a metric for danger
Propose a distributed algorithm to propagate danger information and set up a path
Give performance bound for the computed path
Optimize the delay, communication overhead/balance

4. The Challenges Asymmetric links Congestion Packet loss
Unbalanced communication

5. Pictures