Five Disruptive Technologies in 6G to Support Digital Twin Networks

With the expected explosive growth of the number of mobile user devices and data traffic in the next decade and beyond, and the expected development of various new applications and services such as vehicle-to-everything, extended reality and smart city, the requirements for Quality of Service (such as ultra-high data transmission rate, ultra-low latency, support for the highest moving speed and seamless connection, etc.) will reach levels never seen before. The sixth generation (6G) of networks is conceived to address the requirements mentioned above. Digital Twin refers to a digital representation to represent a physical entity in virtual space, while its corresponding physical object remains in the physical space. In this article, we first briefly introduce some basic knowledge of Digital Twins. We then outline possible innovative technologies expected in 6G networks that will help Digital Twin systems to reach full potential, and deliver the high-level performance needed for the next generation of communications.