Digital Twin Network (DTN) is foreseen as one of the essential tools for managing the complexity and demands for emerging 6G networks, offering a high-fidelity and real-time virtual environment that would mirror complex behaviors of the underlying physical network. Creating the perfect recipe of a highly accurate DTN requires several ingredients to come together into the mix - data collected from the physical network, advanced modeling techniques for DTN, and robust interfaces around DTN. The objective of this research report is to deep dive into a set of key technologies that would enable the realizations of these key ingredients into shaping up the high-fidelity digital avatar of a 6G network, and to ensure seamless interaction and synchronization between the digital and physical realms. In particular, this research report focuses on Digital Twin for Radio Access Network (RAN) or DT-RAN, one of the most complex domains within a network infrastructure. Understanding intricacies of Digital Twin enablers for RAN will be crucial in extending the scope of this technology beyond the RAN Domain and to other parts of the network.
