VehicularNetworks.PDF

Exploring the Hidden Connectivity in Urban Vehicular Networks 1,2 3 1,2 1 4 5 Kebin Liu , Mo Li , Yunhao Liu , Xiang-Yang Li , Minglu Li and Huadong Ma 1 TNLIST, School of Software, Tsinghua University 2 Department of Computer Science, Hong Kong University of Science and Technology 3 School of Computer Engineering, Nanyang Technological University, Singapore 4 Department of Computer Science, Shanghai Jiaotong University 5 Department of Computer Science, Beijing University of Posts and Telecommunications Abstract—The high mobility of VANET makes information ex- contributes useful information to the VANET. Meanwhile each change across the network excessively difficult. Traditional ap- vehicle is also an information consumer that queries the items proaches designed for stationary networks are not applicable due of particular interest and retrieves them from the VANET. to the high dynamics among the nodes. Applying the routing techniques tailored for general mobile networks inevitably brings There have been intensive studies that investigate the prob- huge traffic burden to the crowded urban VANET and leads to lem of information exchange within a wireless multi-hop net- low efficiency. To make the information exchange fluent and work. Nevertheless, the high mobility of VANET makes it efficient, we explore the unique features of the urban VANET. excessively difficult to perform efficient information exchange