On the one hand, the B5G communication system is mainly characterized by small cell dense networking, the vehicle needs to switch to the base station frequently during the driving process. On the other hand, in the future B5G/6G communication system, there are abundant, heterogeneous and different characteristics of communication, computing, storage and other resources. Therefore, it is necessary to break through the challenges of flexible heterogeneous converged network access architecture design, efficient multi-dimensional network resource utilization, and personalized user service guarantee for B5G/6G C-V2X network on the basis of the existing 5G dense cellular network technology. Through the cutting-edge technologies including digital twins, blockchain, network slicing and network virtualization, etc., the intelligent vehicle access and resource management technology of B5G/6G cellular V2X is proposed.
1. Wireless Communication Network Architecture and Flexible Access Methods
Due to the scattered communication frequency points and the huge difference in fading characteristics between frequency bands, the future network will show a trend of heterogeneous networking, that is, macro base stations with wide coverage and various types of micro base stations build multi-layer heterogeneous connections. The internet of vehicles has the characteristics of high dynamics, high security requirements, and high latency sensitivity. Therefore, it is of great significance to study flexible access management methods for the complex access network environment that will evolve in the future.
2. Elastic Resource Management Solutions
By segmenting B5G/6G cellular vehicle network resources, specific slice services are constructed for different vehicle services to form network slices that are independent of each other and do not interfere with each other. At the same time, fine-grained elastic resource management is carried out for each network slice. Therefore, it is possible to complete the optimization of B5G/6G cellular vehicle network resource management on the basis of meeting diversified vehicle network business needs.
3. Personalized Service
In the B5G/6G cellular IoV, there are different business requirements. In order to ensure on-demand services and efficient sharing of network resources, we study technologies such as uplink and downlink decoupling, digital twins, edge intelligence technology, and distributed machine learning to provide services for differentiated business requirements such as computing intensive, communication intensive and delay sensitive in the IoV.
4. Traffic light-free intersection scheduling system
The futuristic networked smart intersection design is specifically divided into a decision layer, a transmission layer and a perception layer. The decision control layer uses the DSA vehicle travel policy scheduling algorithm, the transmission layer uses the ZigBee communication module and the personalized CTMAC communication protocol, and the perception control layer is the traffic light-free intersection and the smart cart-related sensors on the smart sandbox. The three layers cooperate with each other to form a futuristic networked intelligent intersection, which can realize the intersection de-stoplighting and greatly improve the throughput of intersection vehicles.
