The vision diagram of the three-domain architecture of network capability openness The network domain includes network element entities such as the operator’s BSS/OSS, MANO, network slice and network element entity, MEC, and big data analysis platform. Among them, the combination of BSS/OSS and MANO capabilities realizes the unified orchestration and management of network slices, as well as the capability opening of platform domains. Network slicing can support different Internet of Vehicles business requirements, and realize different network configurations in different application scenarios. The network element entity realizes the opening of specific network control capabilities, monitoring capabilities, network information, and basic network service capabilities. The big data analysis platform implements big data analysis of network basic data, and reports the analysis results to the platform domain for opening up. Among them, the platform domain is the brain and core to realize the opening of network capabilities, the link connecting the internal capabilities of the network and external business needs, and the key to truly realize the intelligence of the network. In the Internet of Vehicles system, the platform domain not only has network management capabilities, but also realizes connection management and terminal management downwards and business management upwards.