5G mobile networks and Digital Twins concept: Research challenges in network DT emulation

Abstract

In this paper, a comprehensive overview of digital twins (DT) for 5G mobile systems and their mutual support is presented. First, we introduce fundamental DT concepts in the creation of virtual representations of complex real-world systems. Second, for DT support in the emulation of 5G networks, we identified challenges in design, optimization, network operation and maintenance. Third, examples of specific DT use cases including smart manufacturing as the leading 5G vertical are considered. The continuously growing demands create new requirements and trends. We discuss open research challenges together with possible directions for future work.