Design and Optimization of Cluster-Based DSRC and C-V2X Hybrid Routing

With the continuous development of connected and automated vehicles (CAVs) Internet Vehicle (IoV) technologies, various application scenarios have put forward higher requirements for vehicular communications. On one hand, applications related to vehicle driving safety require lower latency throughput. other users who use cellular vehicle-to-everything (C-V2X) transfer data will face high communication fees due increasing amount data. Therefore, from perspective balancing quality service (QoS) user costs, this paper integrates dedicated short-range (DSRC) C-V2X, two technologies with their own advantages, into a framework called cluster-based traffic differentiated hybrid routing (CTDHR), provide services in-vehicle communication. A clustering method based on hierarchical is proposed solve problems (e.g., linking being difficult maintain frequent cell handover high-speed movement vehicles). The CTDHR modeled resulting clusters an objective equation was established. Finally, since obtained nonlinear integer programming problem, we propose heuristic algorithm optimization problem. In simulation experiments, shows better performance than existing DSRC C-V2X models. experimental results show that can reduce costs while satisfying QoS.