AI-Driven Digital Twins: Optimizing 5G/6G Network Slicing with NTNs

Abstract: Network slicing in 5G/6G Non-Terrestrial Network (NTN) is confronted with mobility and traffic variability. An AI-based digital twin (DT) architecture with deep reinforcement learning (DRL) using Deep deterministic policy gradient (DDPG) is proposed for dynamic optimization of resource allocation. DT virtualizes network states to enable predictive analysis, while DRL changes bandwidth for eMBB slice. Simulations show a 25\% latency reduction compared to static methods, with enhanced resource utilization. This scalable solution supports 5G/6G NTN applications like disaster recovery and urban blockage.