Fujitsu and partners are developing next-generation 5G core technology

The consortium of Japanese partners successfully promotes domestic production and cost reduction for the core 5G technology, the basis for next-generation communication standards.

The University of Tokyo, Internet Initiative Japan (IIJ), APRESIA and Fujitsu have successfully developed open source software for the 5G/6G private mobile system and realized a domestically produced, low-cost 5G core network (5GC), the core technology of 5G cellular network.

The initiative was carried out by the partners as part of NEDO’s research and development project for the feasibility study “Enhanced Infrastructures for Post-5G Information and Communication Systems” (contractually agreed).

5GC software plays a central role in controlling cellular networks, but the need for domestic production and cost reduction poses an ongoing challenge to make related technologies like private 5G a reality.

With the development of this new technology, IIJ, APRESIA and Fujitsu developed a practical version of 5GC based on open source software with commercial functionality, performance and stability based on open source software. The University of Tokyo contributed a User Plane Function (UPF) that handles more advanced data transmission and route selection by combining 5GC with previously known properties and has applied for a new patent.

The partners anticipate that the eventual deployment of this technology in the real world will allow users to adopt private 5G systems at a lower cost for deployment in real-world environments, leading to broader adoption of private 5G across various industries . The combination of multiple private 5G networks and 5G services provided by major telecom operators will ultimately make it possible to deploy more versatile communications environments than individual private 5G networks alone.

future plans

APRESIA and Fujitsu will continuously release 5G private network solutions combining the 5GC technology developed within this project with 5G base stations and terminals manufactured by each company. The IIJ will also promote the development of communication services that can use multiple private 5G networks with 5GC developed within this project and public 5G networks provided by IIJ as Mobile Virtual Network Operator (MVNO) through roaming. In addition, the University of Tokyo plans to deliver the results of this development to an integrated private 5G system by a venture company founded by the university.

In the future, the University of Tokyo will work with companies to further promote industry-academia collaboration around the research of solutions and services utilizing the 5GC technology developed in this project, as well as research and development of open base station devices ( NR: New Radio) operating on the public cloud to accelerate efforts to advance cloud-native 5G cellular network technologies.

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