Cross-Layer Coordination in Space-Terrestrial Time-Sensitive Transmission for Serving 6G Digital Twin Cities: A Multi-Agent Two-Timescale Reinforcement Learning Approach
The emergence of 6G Digital Twin Cities (DTC) requires ultra-reliable and Time-Sensitive Transmission (TST) to synchronize physical and cyber entities. Space-Terrestrial Integrated Networks (STIN) is a pivotal technology to achieve global coverage and uninterrupted TST in 6G DTC, but its dynamic and heterogeneous natur...