The Influence of Threat Vehicles on Dynamic Navigation in Vehicular Ad Hoc Network

• Main Authors: Chang, Po-Chih, 陳柏志
• Other Authors: Sun, Chuen-Tsai
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/94729489340562425186

碩士 === 國立交通大學 === 資訊科學與工程研究所 === 98 === With the development of vehicular ad-hoc network (VANET), drivers can use on-board unit (OBU) to share traffic information via inter-vehicle communication (IVC) or roadside-to-vehicle communication (RVC). Through the dynamic navigation, a route-planning system based on real-time information sharing, drivers can find smooth paths to their destinations immediately. Because of the property of the minority game in VANET, the threatening vehicles might jam traffic operations on purpose for their personal benefit. Desirable faultless validation methods for detecting such threatening vehicles have not been completely developed yet, so in this study we try to find solutions by putting threatening vehicles into the dynamic navigation model. In this study we build a dynamic navigation traffic model, and then propose schemes for handling three kinds of threatening vehicle: the weight-modified scheme, the weight-modified and timestamp-modified scheme, and the evil message-reverberated scheme. In addition to the basic traffic information sharing methods, we also propose a new traffic information sharing method that takes the relative vehicle locations into consideration. Experimental results show that the evil message-reverberated scheme demonstrate much bigger influence to VANET than the other two types. Our results also show that the traffic information update method with relative vehicle location is helpful in resisting the interference of threatening vehicles; the weighted update method can avoid unnecessary movement; and the timestamp-first update method with relative vehicle location has the best performance in terms of comfortable driving.