| （英） |
In recent years, the concept of digital twins has garnered significant attention from various industries. A digital twin is a technology that recreates physical objects, systems, or processes in virtual space, enabling the simulation, monitoring, and optimization of real-world counterparts. Conventional digital twins primarily rely on one-way data transmission from the physical layer to the application layer (often referred to as a “pipe-like” network) and have made limited progress in bidirectional efforts to control the physical layer using information from the application layer. In this domain, there is a strong demand for Japan-originated research to drive global progress in this field. Previously, the authors proposed a Wireless ITS Digital Twin (WI-DT), a digital twin that integrates transportation and communications. The digital twin used in this study was constructed using the Plateau, a nationwide urban digital twin realization project led by the Ministry of Land, Infrastructure, Transport and Tourism (MLIT), which projects the 3D urban space as a representation of the real world. We are conducting research and development to enable the construction of urban spaces to serve as platforms capable of integrating transportation and communication. In this study, we report on the development of a system in which vehicles other than the communication target are dynamically changed over time as shielding elements, and we analyze the fluctuating reflected and diffracted waves caused by this dynamic shielding. |