Beyond 5G/6G, the next-generation information and communications infrastructure are essential to achieving SDGs and Society 5.0.

In this case, since the functions required for Beyond 5G/6G cover a wide range from physical space to cyberspace, the creation of new services can be expected by combining each function with the right person in the right place.

From this point of view, it is important for Beyond 5G/6G to have the characteristics of an open platform as a receiver of various functional groups, and to secure a mechanism capable of sustainable growth as a social infrastructure.

Accordingly, it is necessary to design the functional architecture of Beyond 5G/6G. In physical space, a flexible and extensible communication environment can be provided by combining not only conventional terrestrial mobile networks but also satellite networks and multicore optical networks.

In cyberspace, various spaces coexist depending on the application, and information processing such as accumulated past data and future predictions is performed.


The implementation of fifth-generation mobile communication systems in society has been in full swing since around 2020.

Mobile communication systems have evolved into a communication infrastructure (1G-3G) and a living infrastructure (4G), becoming an indispensable element in the lives of individuals.

It has become a social infrastructure that connects not only people but also things like the Internet of Things (IoT). A cyber-physical system (CPS) in which people interact with each other, people interact with things, and things interact with each other through cyberspace has come to have great significance in various aspects of social life.

In the next-generation mobile communication system (Beyond 5G/6G), the communication network supporting CPS will become a neural network of society itself.

In other words, it is expected that the communication network centered on the mobile communication system will function as the basic infrastructure of society in the future.