May 2023

No.0037
CJK the 66th IMT Working Group MeetingCJK IMT Working Group Meeting is aiming to exchange information and views about theactivities of international IMT standardizations in ITU-R, APT, 3GPP and so on, among
SDOs in China, Korea, and Japan.
1. Outline of the meeting• Date: 5 and 6 January 2023

• Format: Online meeting• Participants : CCSA 47 participants, TTA 14 participants, ARIB 23 participants
2. Main results(1) The results of the AWG-30, ITU-R SG5 the 42nd WP5D meeting, and the recent 3GPP
meeting were shared, and the participant views were exchanged on the future issues
to be studied.
(2) For the 43rd WP5D meeting scheduled to be held from 31 January, the progress ofthe preparation in each country was shared, a joint contribution was discussed, anditems for further study and work contents were identified.
(3) The revision of the Recommendation

ITU-R M.2071: Generic unwanted emission

characteristics of mobile stations using the terrestrial radio interfaces of IMTAdvanced, and the summary of a study on frequencies above 100 GHz for IMT-2030
Vision Recommendation, which is under development, were decided to be worked onby e-mail for joint contribution.
(4) Information was shared on the status of studies and ideas of each country on theusage scenarios and capability requirements to be defined in the IMT-2030 Vision
Recommendation. The basic policy of what should be included in the recommendationand how to proceed with the study in the future were discussed. And it was decided
that the exchange of opinions by e-mail would be continued.
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(5) Information was exchanged on the identification of additional IMT frequencies,
which is being considered as a new agenda item for WRC-27. It was decided tocontinue exchanging views on the description of the need for additional IMT
identification, specific candidate frequencies, etc., for the APG23-5 meeting,including the possibility of joint contribution.
3. Next meeting schedule
The next CJK IMT Working Group Meeting will be held on 11-12 May 2023.

The 5th APG-23 (APG23-5) meeting
APG-23 (Asia-Pacific Telecommunity Conference Preparatory Group for WRC-23) is
responsible for developing APT Common Proposal for the World Radiocommunication
Conference 2023 (WRC-23).
This is the fifth meeting of APG-23 toward the final meeting to be held around August 2023.
The chairperson is Dr. Kyu-Jin Wee (Korea).
1.

Outline of the meeting• Date: 20-25 February 2023

• Location : Busan, Korea (Online participation available)• Participants:
882 participants from 28 countries, 117 participants as the Japanese delegation
headed by MIC, including 4 participants from ARIB.
2.

Main results
At this meeting, APT Preliminary Views were prepared as the basis for developing of
APT Common Proposals for each agenda item of WRC-23. The results of deliberations
on the main agenda items related to IMT (AI 1.1, 1.2, 1.4, and 10) are shown below.

(1) AI 1.1: Protection in the frequency band 4800-4990 MHz of stations of theaeronautical and maritime mobile services and review of PFD (Power Flux Density)
criteria
This Agenda, pursuant to ARC-19 Resolution 223, is to consider measures to protect
aeronautical and maritime mobile service stations operating in international
airspace and waters near the territory of the country operating the IMT station inthe 4800-4990 MHz band, and to reconsider the power flux density (pfd) limitsimposed on IMT stations in Footnote 5.441B of the Radio Regulations.
2Japan has input a Preliminary View to review the current regulations to promote theintroduction of IMT while protecting the aeronautical and maritime mobile service
stations.
As a result of the conflict between the assertion that the pfd limits are necessary andthe argument that they are unnecessary for the protection of aeronautical andmaritime mobile service stations, the Preliminary View was not drafted at themeeting, and it will continue to be discussed at the next meeting.
(2) AI 1.2: Identification of the following frequency bands 3300-3400 MHz, 3600-3800
MHz, 6425-7025 MHz, 7025-7125 MHz, and 10.0-10.5 GHz for IMTThis agenda item is to study, pursuant to WRC-19 Resolution 245, the identificationof IMT in the 3300-3400 MHz (Region I footnote revision and Region II), 3600-3800
MHz (Region II), 6425-7025 MHz (Region I), 7025-7125 MHz (all regions) and 10.010.5 GHz bands (Region II), including additional primary allocations for mobile
services.
Japan submitted a contribution to support the global identification of the 7025- 7125
MHz frequency band as terrestrial IMT on the condition that the protection ofexisting primary services is ensured and no additional restrictions are imposed, on
the premise that the sharing and compatibility of IMT and existing services can berealized, and to support the designation of 3600-3800 MHz and 6425-7025 MHz,
which are the targets for consideration in other regions.
As a result of the discussion, the Preliminary View was adopted to support thepossibility of global IMT identification for frequencies between 7025 and 7125 MHz.
On the other hand, regarding frequencies between 3600 and 3800 MHz and between
6425 and 7025 MHz, the document only stated that the identification of IMT should
not affect the existing primary services in the Third Region, and the discussion will
be continued at the next meeting.
(3) AI 1.4: Use of HIBS (HAPS as IMT Base Stations) in the mobile service in certain
frequency bands below 2.7 GHz already identified for IMTThis Agenda is to study the use of High Altitude Platform Stations (HAPS) as IMTbase stations in mobile operations in the frequency band below 2.7 GHz alreadyspecified in IMT globally or regionally in accordance with WRC-19 Resolution 247.
Japan submitted a contribution supporting the identification of all IMT frequency
bands under consideration (694 to 960 MHz, 1.7 GHz band, 2 GHz band, and 2.5 GHzband) as HIBS on the condition that the protection of existing primary services isensured. Japan also submitted a contribution document stating that it is willing towork with Papua New Guinea, Samoa, Tonga, and Vanuatu to jointly identify HIBS.
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(4) AI 10 (related to the Agenda Items of WRC-27): Identification of additionalfrequency bands for IMT
As new items on the agenda for the WRC-27, Japan, Korea, and Vietnam jointly
proposed the identification of additional IMT frequencies for the IMT-2030, andChina proposed the study of 6425-7025 MHz for the identification in the Third Region.
During the discussion, a view was expressed that it was necessary to specify thefrequency band, and the discussion will be continued at the next meeting.
In addition, China proposed a new agenda to allocate additional mobile satellite
services to IMT frequencies below 7 GHz in order to realize direct communications
between mobile terminals and IMT satellites, and this will be continued forconsideration at the next meeting.
3.

Future meeting schedule
The next APG23-6 (final round) will be held in Brisbane (Australia) from 14 to 19 August2023 to develop APT Common Proposals to the WRC-23.
Study structure
Chairperson

Dr. Kyu-Jin Wee (Korea)

Vice Chairperson

Mr. Muneo Abe (Japan)
Ms. Zhu Keer (China)

Chairperson of Editorial Committee

Mr. Christopher Hose (Australia)

WP1: Fixed, Mobile, Broadcasting service

Dr. Hiroyuki Atarashi (Japan)
Dr. Jae Woo Lim (Korea)

WP2: Aeronautical Maritime service

Mr. Bui Ha Long (Vietnam)

WP3: ScienceMr. Wahyudi Hasbi (Indonesia)

WP4: Satellite service

Ms. Fenhong Cheng (China)
Mr. Mrunmaya Pattanaik (India)

WP5: General issue

Dr. Taghi Shafiee (Iran)

Conference hall4

Symposium to Promote Safe and Secure Radio Usagein Medical Institutions
MIC and EMCC (ElectroMagnetic Compatibility Conference Japan),for which ARIB

works as secretariat, held a "Symposium to Promote Safe and Secure Radio Usage in
Medical Institutions" in an on-demand style from 1 to 22 March 2023.
At the symposium, experts gave lectures on the potential for new usages of radio waves atmedical institutions, based on the use cases of Local 5G, sXGP, IoT, medical telemetry
management support systems, and other systems at medical sites. As the spread of theCoronavirus infections, the use of radio waves has rapidly expanded at medical sites,
including remote monitoring of patients, and online consultations.
Considering these situations, a panel discussion on the theme of "Expectations and Issues
for Use of Radio Waves at Medical Institutions" was organized.
The program of the Symposium was as follows.
1. Greetings from the organizer

2. Lectures
(1)
(2)

(3)

(4)
(5)

Ms. KUNIMITSU Ayano
Parliamentary Vice-Minister
for Internal Affairs andCommunications
Mr. FUKUCHI Hajime
Chairman of EMCC

Remote Diagnosis and Remote
Emergency Transport Based on 4K
High-Resolution Images via 5G
Field Trials of Efficient Drug
Traceability within and outside
Hospitals Using Local 5G, Robots, andImage RecognitionsXGP: The Next-Generation PHS
Service for Hospitals
Toward Further Possibilities for
Combining Medical Care with ITRadio Wave Regulation of Medical
Telemeters Using Radio Wave
Monitoring Devices

5Dr. KAGEJI Teruyoshi
Tokushima Prefectural KaifuHospital
Dr. TORIKAI Kouta
Gunma University Hospital
Mr. NAKAHARA Takahiro
National Hospital
Organization Kyoto MedicalCenter
Mr. KATO Noriyasu
Allied Telesis K.K.
Dr. KAWABE Manabu
Saitama Medical University

3. Panel discussion:"Expectations for the Use of Radio Waves in Medical Institutions and Associated Issues"
Moderators:
Prof. KANO Takashi
Jikei University of Health Care Science
Chair of the EMCC's Committee for Radio Use Promotion in Medical Institutions
Prof. HANADA Eisuke
Saga University
Vice-Chair of the EMCC's Committee for Radio Use Promotion in Medical Institutions
Panelists:
Mr. OMICHI Michihiro
Vice-President, Japan Hospital Association
Mr. SHITOH Hidefumi
Director, Informatics Systems Integration Section, Tokyo Medical University
Mr. TADA Kazuhiro
Director, Department of Clinical Engineering, Kimitsu Chuo Hospital
Dr. NAGASHIMA Kimiyuki
MD Executive Board member, Japan Medical Association
Mr. MATSUDA Shintaro
Chief, Department of Medical Engineering Service, Saitama Medical University

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