Trends and Challenges of Policy Verification for Intent-based Networking towards 6G

Intent-based Networking (IBN) is geared towards the on -demand service requirements of future intelligent network full-service scenarios, providing personalized network services and differentiated service level agreement (SLA) for users. It is implemented based on autonomous networks, which requires to use Artificial Intelligent (AI) models to match appropriate services and resources to the network requirements proposed by users. To improve the reliability of matching policies by AI models in closed -loop autonomous networks, an open scheme is proposed for AI policy verification using digital twins. The scheme is tested and analyzed based on an open-source project platform. Finally, the technical evolution route and challenges of IBN AI policy verification based on digital twins is also discussed in this paper.