The fourth scientific workshop
presented by the 26th URSI-C in Japan

Session title:
"Initiatives for Use Cases in B5G/6G"


1. Convener: Prof. Toshihiko Nishimura (Hokkaido University)

2. Date/time: 14:30 - 18:00, January 10th, 2025

3. Venue: Conference Room, Kokumin-shukusha Shodoshima
(Hybrid conference with web conference)

4. Registration fee: Free

5. Listed attendees: 15 attendees on site, 9 attendees on web conference

6. Technical arrangement: Prof. Suguru Kameda (Hiroshima University), Dr. Akihiro Okazaki (Mitsubishi Electric Corporation), Prof. Toshihiko Nishimura (Hokkaido University)

7. Local arrangement: Prof. Toshihiko Nishimura (Hokkaido University)

8. Support
* IEEE AP-S Kansai Joint Chapter
* IEEE MTT-S Japan Chapter
* IEEE VTS Tokyo/Japan Chapter
* IEEE SSCS Japan Chapter

9. Session title: "Initiatives for Use Cases in B5G/6G"

10. Presentations:
  • 14:30 - 14:50 Reception
  • 14:50 - 15:00 Opening Remarks
    Prof. Mitoshi Fujimoto, Chair, Commission C of URSI-JNC
    (Fukui University)
  • 15:00 - 15:50 "Toward the Integration of ICT Technology and Real-World Control
    by Digital Twin"
    Prof. Hideyuki Shimonishi (Osaka University)
  • 15:50 - 16:40 "Millimeter Wave Radio Digital Twin R&D Initiatives"
    Dr. Yuki Susukida (Kozo Keikaku Engineering inc.)
  • 16:40 - 16:50 Coffee Break (10 min.)
  • 16:50 - 17:40 "Research and development on resiliency improvement for B5G and 6G"
    Dr. Kenichi Takizawa (National Institute of Information and Communications
    Technology)
  • 17:40Closing

  • 21:30 - Evening Session "Relationship between research results deployment
    and international standardization activities"
    Dr. Satoshi Tsukamoto (Tohoku University)

11. Social gathering:
It was held from 19:00 to 21:00 at Banquet Room, Kokumin-shukusha Shodoshima, Kagawa pref. The number of attendees was 15.

12．The Steering committee meeting:
It took place from 8:45 to 9:30 on January 11th, 2025, at Room 801, Kokumin-shukusha Shodoshima.

13. Concluding Remarks
Several years have passed since 5G service started, and studies are now underway for B5G and 6G. B5G and 6G are expected to realize high capacity communications, multiple simultaneous connections, coverage expansion, and URLLC （Ultra-Reliable and Low Latency Communications）. In addition, B5G and 6G are also expected to become the foundation for all industrial and social activities. In this workshop, the use cases of future wireless technologies as social infrastructure were introduced and their technical issues were discussed.
Prof. Hideyuki Shimonishi (Osaka University) explained about future cyber-physical systems and digital twin. He described the evolution of IoT technology, which is currently in widespread use, into a digital twin that can represent the entire space in real time with high resolution and high accuracy, and furthermore, the prospect that physical space, which is the real world, and the cyber space realized by the digital twin will be highly connected in the future. He also introduced his own research activities on how to construct and use a probabilistic digital twin of the real world with actual data.
Dr. Yuki Susukida (Kozo Keikaku Engineering inc.) introduced his research and development of millimeter-wave-based digital twin. He explained the control of millimeter wave V2X by O-RAN, multi-point beamforming, and testbed construction as a digital twin. He also explained about the establishment of relay emulation evaluation infrastructure for coverage expansion and wireless emulators as use cases of millimeter wave utilization, which is his research activity.
Dr. Kenichi Takizawa (NICT) explained the realization of resilient systems with the ability to cope with complex and changing environments as a sustainable ICT infrastructure technology for B5G/6G. He introduced several efforts to realize systems that can increase their own resilience to communication/networking and observation systems. These include: radio strength prediction using camera images, coverage expansion in low latency radio and distributed cooperative radio, quantum annealing for multiple simultaneous connections, and detection of natural phenomena in the distance using ultra low frequency components.
All three lectures were explained very clearly with evaluation test results and experimental data, and it was understood that the realization of B5G/6G will play a major role in upgrading new social infrastructure in the future. It was very useful for the participants to share concrete examples of use cases for B5G and 6G and to learn about future applications and issues of wireless network technologies.




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