As part of ongoing efforts to establish a testbed environment based on next-generation communication infrastructure, the Nakao Laboratory has installed six private 5G base stations developed in-house across the University of Tokyo’s Hongo Campus.
Following the acquisition of a commercial private 5G license in December 2025, the laboratory has been advancing the development of a private 5G testbed environment covering the entire Hongo Campus. Through this effort, we have confirmed the availability of private 5G connectivity in the areas listed below.
This testbed is being developed as a demonstration environment for next-generation communication infrastructure at the University of Tokyo’s Hongo Campus. Its primary objectives are to create new business foundations through collaboration among industry, academia, and government, and to promote innovation both in Japan and internationally.
- Campus-wide deployment of private 5G at the Hongo Campus, including the design and integration of base stations
- Examination of operational policies to ensure effective utilization of the testbed environment
- Collaboration with IOWN environments and overseas testbed facilities to enable coordinated operation with domestic and international sites
In parallel, the following technical research initiatives are being pursued to further enhance the communication infrastructure using this testbed:
- Improvement of system resilience through redundancy of the mobile core
- Enhancement of communication quality through optimization of handover parameters
Looking ahead, we will continue our research toward the realization of an autonomous smart campus enabled by digital twin technologies, with a vision of a campus environment in which robotic systems can operate seamlessly both indoors and outdoors.