Abstract: For the heterogeneous requirement of Vehicle-to-Vehicle (V2V) user equipment and Vehicle-to-Infrastructure (V2I) user equipment, and the complex interference is caused by V2V user equipment reuses V2I link. Based on the theory of hypergraph partitioning, a resource sharing mechanism is proposed, which utilizes prior V2V users clustering and allows access to multiple V2I link. Firstly, depending on passive cluster model, vehicle nodes are divided into different clusters relying on the interference intensity of vehicle nodes, so as to reduce the mutual interference of vehicle nodes in the same cluster. Then, the optimal power allocation of the vehicle node is designed by maximizing the total throughput of V2I links. Finally, 3D-matching algorithm is used to achieve the associations among base stations, resource blocks and vehicle nodes. Simulation results show that the proposed mechanism satisfies the reliability of V2V link and maximizes the total throughput of V2I link, and the conclusion of the analysis provides a theoretical reference for the Internet of Things (IoT) applications in intelligent transportation systems.