The fifth scientific workshop
presented by the 25th URSI-C in Japan

Session title:
"Latest Trends on Applications of Satellite and HAPS
for Beyond 5G and 6G"

1. Convener: Prof. Yukitoshi Sanada (Keio University)

2. Date/time: 13:15 - 17:00, January 6th, 2023

3. Venue: Yonago Culture Hall Seminar Room 1 (Yonago city, Tottori pref.)
(Hybrid conference with web conference)

4. Registration fee: Free

5. Listed attendees: 19 attendees on site, 27 attendees on web conference

6. Local arrangement: Prof. Yukitoshi Sanada (Keio University)

7. Session title: "Latest Trends on Applications of Satellite and HAPS for Beyond 5G and 6G"

8. Presentations:
  • 13:00 - 13:15 Reception
  • 13:15 - 13:20 Opening Remarks
    Prof. Noriharu Suematsu, Chair, Commission C of URSI-JNC
    (Tohoku University)
  • 13:20 - 14:00 "Trends on Applications of Satellite in NTN for Beyond 5G and 6G" Dr. Makio Tsuchiya (National Institute of Information and Communications
  • 14:00 - 14:40 "Old and New HAPS"
    Dr. Hiroyuki Tsuji (National Institute of Information and Communications
  • 14:40 - 14:50 Coffee Break (10 min.)
  • 14:50 - 15:20 "SKY Perfect JSAT's Approach to Future NTN Deploymentquot;
    Dr. Nobuyuki Setoguchi (SKY Perfect JSAT Corporation)
  • 15:20 - 16:00 "Trends on Developments of Satellite for Beyond 5G and 6G Network"
    Dr. Soichiro Inoue (Axelspace Corporation)
  • 16:00 - 16:40 "Problems and Diversification Efforts of Backhaul Connections for
    IFC Services"
    Dr. Takayuki Sotoyama (Panasonic)
  • 16:40Closing

It held from 19:30 to 21:00 at Kaike Grand Hotel Tensui in Yonago city, Tottori pref. The number of attendees was 19.

10.The Steering committee meeting:
It took place from 8:30 to 9:30 on January 7th, 2023, at Kaike Grand Hotel Tensui.

11. Concluding Remarks
In Beyond 5G and 6G, the use of satellites and HAPS with base stations and relay stations is being considered to extend coverage not only during disaster emergencies but also during normal times. It can cover mountainous and remote areas, the ocean, and even outer space. On the other hand, there are unique research and development issues such as propagation characteristics that differ from those on terrestrial wireless links, linkage with terrestrial network systems, and beam control for space division. This workshop was aimed to present and discuss latest research and development activities on a non-terrestrial network (NTN) towards standardization and developments in all over the world by researchers who are active at the forefront. We deeply discussed on wide aspects of the NTN including the technological subjects, bottlenecks, solutions, and practical timelines in relation to the presentations given by five renowned leading researchers and questions to deepen our common understanding of prospects.
Dr. Makio Tsuchiya (NICT) talked about the global trend of NTN R&D. He also introduced the current statuses of the studies on the use of satellites, HAPS, and UAVs in wireless communication networks.
Dr. Hiroyuki Tsuji (NICT) introduced the advantages and development trends of HAPS. Then, He explained the technical developments of HAPS for wireless communications and optical communications at NICT and summarized the issues for their practical applications.
Dr. Nobuyuki Setoguchi (SKY Perfect JSAT Corporation) explained about expectations for NTN and SKY Perfect JSAT's efforts to realize NTN. He also introduced the company's demonstration experiments.
Dr. Soichiro Inoue (Axelspace Corporation) introduced satellite systems that AXELSPACE has developed. He also explained the company's low-cost and quick-delivery satellite platform called AxelLiner.
Dr. Takayuki Toyama (Panasonic Holdings) introduced the avionics business. He also spoke about the market for in-flight network connections and the technologies that will be needed for in-flight network in the future.
All the speakers presented the latest R&D and standardization trends, and the issues to be solved and future prospects for the commercial deployment of NTNs were discussed in depth. The workshop was very useful to share with the participants the specific challenges of satellite and HAPS utilization for Beyond 5G and 6G.

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