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[567]  Report on the fifty-sixth meeting of Working Party 4A (Shanghai, China, 5-16 May 2025)

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39306 bytes 2025-06-05 [567] Annex 52 - Date of beginning of the works related to non-WRC topics discussed under the purview of Working Group 4A1

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32626 bytes 2025-06-05 [567] Annex 51 - Note from the Chair of Working Party 4A to the Director of the Radiocommunication Bureau

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72326 bytes 2025-06-05 [567] Annex 50 - Draft reply liaison statement to Working Party 7D on WRC-27 agenda item 1.16 - Technical information to support studies under WRC-27 agenda item 1.16

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90119 bytes 2025-06-05 [567] Annex 49 - Preliminary draft new revision of Recommendation ITU-R BO.1504 - Effective utilization of spectrum assigned to the broadcasting satellite service (sound)

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111313 bytes 2025-06-05 [567] Annex 48 - Working document towards a preliminary draft new revision of Recommendation ITU-R S.1528 - Satellite antenna radiation patterns for non-geostationary orbit satellite antennas operating in the fixed-satellite service below 30 GHz

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28455525 bytes 2025-06-05 [567] Annex 47 - Working document towards a preliminary draft revision to Report ITU-R BO.2029 - Broadcasting-satellite service earth station antenna pattern measurements and related analyses

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339126 bytes 2025-06-05 [567] Annex 46 - Working document towards a preliminary draft new Recommendation - Maximum allowable aggregate interference levels from time-variant sources from other services into fixed-satellite service links

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59082 bytes 2025-06-05 [567] Annex 45 - Working document towards a preliminary draft revision of Recommendation ITU-R BO.1900 - Reference receive earth station antenna pattern for the broadcasting-satellite service in the band 21.4-22 GHz in Regions 1 and 3

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38474 bytes 2025-06-05 [567] Annex 44 - Working document towards a preliminary draft revision of Recommendation ITU-R BO.1443-3 - Reference BSS earth station antenna patterns for use in interference assessment involving non-GSO satellites in frequency bands covered by RR Appendix 30

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44525 bytes 2025-06-05 [567] Annex 43 - Working document towards a preliminary draft new Report ITU-R S.[INTERFERENCE-NGSO-NGSO/GSO]

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1345999 bytes 2025-06-05 [567] Annex 42 - Working document towards a preliminary draft new Recommendation ITU-R S.[NON-GSO-MODELLING] - Modelling and simulation of non-GSO FSS systems for use in sharing and compatibility studies

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38543 bytes 2025-06-05 [567] Annex 41 - Some elements relating to working document towards a preliminary draft new Recommendation ITU-R S.[NON-GSO-MODELLING]

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911847 bytes 2025-06-05 [567] Annex 40 - Working document towards a preliminary draft revision of Recommendation ITU-R S.1529 - Analytical method for determining the statistics of interference between non geostationary satellite orbit fixed-satellite service systems and other non geostationary satellite orbit fixed satellite service systems or geostationary satellite orbit fixed satellite service networks

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957882 bytes 2025-06-05 [567] Annex 39 - Elements relating to working document towards a preliminary draft revision of Recommendation ITU-R S.1526-1

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41968 bytes 2025-06-05 [567] Annex 38 - Detailed work plan for a revision to Recommendation ITU-R S.1503 in the period 2024-2025

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494582 bytes 2025-06-05 [567] Annex 37 - Working document containing technical work relating to the GSO es gain patterns used by Recommendation ITU-R S.1503

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8778882 bytes 2025-06-04 [567] Annex 36 - Working document towards a preliminary draft revision of Recommendation ITU-R S.1503 - Functional description to be used in developing software tools for determining conformity of non-geostationary-satellite orbit fixed-satellite service systems or networks with limits contained in RR Article 22 of the Radio Regulations

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3187195 bytes 2025-06-04 [567] Annex 35 - Working document towards a preliminary draft revision of Recommendation ITU-R S.1325 - Simulation methodologies for determining statistics of short term interference between co frequency, codirectional non-geostationary-satellite orbit fixed-satellite service systems in circular orbits and other non-geostationary fixed satellite service systems in circular orbits or geostationary-satellite orbit fixed satellite service networks

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38845 bytes 2025-06-04 [567] Annex 34 - Resolution 76 (Rev.WRC-23) - Methodology - Key challenges for discussion

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1148736 bytes 2025-06-04 [567] Annex 33 - Working document towards a preliminary draft new Recommendation ITU-R S.[EXCEEDANCE EPFD KA KU] - Examples of Technical procedures for addressing any exceedance of aggregate equivalent power flux-density into geostationary satellite networks in the fixed-satellite service from multiple non-geostationary satellite systems in the Ku and Ka frequency bands in the frequency bands covered by Resolution 76 (WRC-23)

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584530 bytes 2025-06-03 [567] Annex 32 - Working document towards a preliminary draft new Recommendation ITU-R S.[AGGREGATE EPFD KA KU]

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25166935 bytes 2025-06-04 [567] Annex 31 - Technical studies [for information] in response to WRC-23 minutes on Article 22 epfd limits without any regulatory consequences [for information]

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42514 bytes 2025-06-03 [567] Annex 30 - Draft work plan for the Handbook on Satellite Communications and Technologies

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34916506 bytes 2025-05-19 [567] Annex 29 - Draft working document for the Handbook on Satellite Communications and Technologies

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166464 bytes 2025-06-03 [567] Annex 28 - Work plan of the Working Group of the plenary on Resolution ITU-R 74

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42483 bytes 2025-06-03 [567] Annex 27 - Elements of the working document towards a preliminary draft new Recommendation ITU-R S.[NGSO DEORBITING]

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853729 bytes 2025-06-03 [567] Annex 26 - Working document towards a preliminary draft ITU-R Handbook on best practices for the sustainable use of frequencies and associated non-GSO orbits by space radiocommunication services

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4201542 bytes 2025-06-03 [567] Annex 25 - Part 2

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17848347 bytes 2025-06-03 [567] Annex 25 - Part 1

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21870400 bytes 2025-06-03 [567] Annex 25 - Working document towards candidate topic under WRC-27 agenda item 7 - Possible measures to enhance long-term protection and sustainable development of BSS in the plan band against severe misaligned FSS in other regions

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51081 bytes 2025-06-03 [567] Annex 24 - Working document towards candidate topic under WRC-27 agenda item 7 - Inclusion of the territory of a country in the service area of a notified geostationary (GSO) satellite networks in the planned and unplanned BSS frequency bands and in the planned FSS frequency bands subject to Appendices 30A and 30B, without imposing new coordination restrictions to satellite networks already submitted to the bureau

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48618 bytes 2025-06-04 [567] Annex 23 - Working document towards candidate Topic under WRC-27 agenda item 7 - Proposed revision to Resolution 170 (Rev.WRC-23)

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51375 bytes 2025-06-03 [567] Annex 22 - Working document towards candidate topic under WRC-27 agenda item 7 - Proposed revision to Resolution 553 (Rev.WRC-23)

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43199 bytes 2025-06-03 [567] Annex 21 - Working document towards candidate Topic under WRC-27 agenda item 7 - Exclusion of the territory of a country from the service area of a geostationary satellite network (GSO) in the fixed-satellite service (FSS) or mobile-satellite service (MSS) in a frequency band not subject to a Plan

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56836 bytes 2025-06-03 [567] Annex 20 - Working document towards candidate Topic under WRC-27 agenda item 7 - Proposed modifications to Appendix 4

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49714 bytes 2025-06-04 [567] Annex 19 - Working document towards candidate Topic under WRC-27 agenda item 7 assessing the potential advantage to define coordination arc for some frequency bands above 3.4 GHz and services currently not subject to the application of the coordination arc concept, and to review the existing coordination arc thresholds

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53087 bytes 2025-06-03 [567] Annex 18 - Working document towards candidate topic under WRC-27 agenda item 7 - Recording of frequency assignments in space services under RR No. 11.41

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81543 bytes 2025-06-03 [567] Annex 17 - Working document towards candidate topic under WRC-27 agenda item 7 regarding measures to restrict the use of the same satellite to BIU frequency assignments of different GSO satellite networks (within 0.5 degrees of longitude of the physical satellite) without moving the satellite ("Hop without move")

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44459 bytes 2025-06-03 [567] Annex 16 - Working document towards candidate topic under WRC-27 agenda item 7 - The use of the same satellite or different satellites to repeatedly bring into use and bring back into use the same frequency assignments of a satellite network or system for a short period of time

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181138 bytes 2025-06-03 [567] Annex 15 - Working document towards candidate topic under WRC-27 agenda item 7 transparency measures and improvements to the application of RR No. 4.4 to space/satellite services

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49440 bytes 2025-06-03 [567] Annex 14 - Revisions to WRC-27 agenda item 7 draft work plan

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75102 bytes 2025-06-06 [567] Annex 13 - Elements of working document towards draft CPM text on WRC-27 agenda item 1.6

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782435 bytes 2025-06-03 [567] Annex 12 - Elements for a working document on WRC-27 agenda item 1.6

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3170369 bytes 2025-06-06 [567] Annex 11 - Elements of working document towards draft CPM text for WRC-27 agenda item 1.5

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3166491 bytes 2025-06-03 [567] Annex 10 - Supporting material for WRC-27 agenda item 1.5

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41717 bytes 2025-06-03 [567] Annex 9 - Draft work plan for WRC-27 agenda item 1.4

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140380 bytes 2025-05-19 [567] Annex 8 - Elements for a working document towards draft CPM text for WRC-27 agenda item 1.4

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876466 bytes 2025-05-19 [567] Annex 7 - Working document on WRC-27 agenda item 1.4

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36848 bytes 2025-06-02 [567] Annex 6 - Draft work plan for WRC-27 agenda item 1.3

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41285 bytes 2025-06-06 [567] Annex 5 - Working document towards draft CPM text for WRC-27 agenda item 1.3

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4827881 bytes 2025-06-03 [567] Annex 4 - Working document relating to WRC-27 agenda item 1.3 - Studies relating to the use of the frequency band 51.4-52.4 GHz to enable its use by gateway earth stations transmitting to non-geostationary-satellite orbit systems in the fixed-satellite service (Earth-to-space)

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1121499 bytes 2025-06-06 [567] Annex 3 - Part 6 - Agenda item 1.2 FSS deployment density discussion

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11040907 bytes 2025-06-06 [567] Annex 3 - Part 5 - Working document on WRC-27 agenda item 1.2 (Part 5) - Operational and technical limitations for FSS earth stations in the frequency band 13.75-14 GHz (Earth-to-space)

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3621834 bytes 2025-06-06 [567] Annex 3 - Part 4 - Working document on WRC-27 agenda item 1.2 (Part 4) - Operational and technical limitations for FSS earth stations in the frequency band 13.75-14 GHz (Earth-to-space)

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20492834 bytes 2025-06-06 [567] Annex 3 Part 3 - Working document on WRC-27 agenda item 1.2 (Part 3) - Operational and technical limitations for FSS earth stations in the frequency band 13.75-14 GHz (Earth-to-space)

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11588183 bytes 2025-06-06 [567] Annex 3 - Part 2 - Working document on WRC-27 agenda item 1.2 (Part 2) - Operational and technical limitations for FSS earth stations in the frequency band 13.75-14 GHz (Earth-to-space)

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2418743 bytes 2025-06-04 [567] Annex 3 - Working document on WRC-27 agenda item 1.2 - Operational and technical limitations for FSS earth stations in the frequency band 13.75-14 GHz (Earth-to-space)

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41637 bytes 2025-06-02 [567] Annex 2 - Working document related to a preliminary draft new Recommendation ITU-R S.[ESIM-NCMC] - The functionalities and implementation of a network control and monitoring center for earth stations in motion

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14074218 bytes 2025-06-11 [567] Annex 1 - Working document towards a preliminary draft new ITU-R Report WRC-27 agenda item 1.1 - Use of frequency bands 47.2-50.2 GHz and 50.4-51.4 GHz (Earth-to-space) by aeronautical and maritime earth stations in motion in the fixed-satellite service
 

Document :

ITU-R R23-WP4A  Contribution  567

Title :

Report on the fifty-sixth meeting of Working Party 4A (Shanghai, China, 5-16 May 2025)

Date :

2025-05-16

Source :

Chair, WP 4A

Meeting :

2025-05-12

Access :

Restricted to TIES users [ITU-R]

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