School of Computer and Communication Engineering of Science and Technology Beijing;
Beijing Advanced Innovation Center for Materials Genome Engineering of Computer and Communication Engineering of Science and Technology Beijing;
Shunde Graduate School of University of Science and Technology Beijing City;
Beijing Engineering and Technology Center for Convergence Networks and Ubiquitous Services of Science and Technology Beijing;
Commonwealth Scientific and Industrial Research Organization;
Internet of vehicles; opportunistic networks; inter-contact times; mixture model; parameters estimation;