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[943]  Report of the thirty-sixth meeting of Working Party 4C (Geneva, 7-16 October 2026)

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46207 bytes 2026-10-28 [943] Annex 28 - Liaison statement to International Maritime Organization (IMO) - Request for information on RNSS systems and signals recognized by IMO

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44506 bytes 2026-10-28 [943] Annex 27 - Liaison to International Civil Aviation Organization (ICAO) - Request for information on RNSS systems in aeronautical applications

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1499284 bytes 2026-10-27 [943] Annex 26 - Working document on the possible description and functionality of MSS systems for direct connectivity between space stations and IMT user equipment

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67520 bytes 2026-10-19 [943] Annex 25 - RDSS/RNSS text for the Handbook on satellite communications and technologies Chapter 10

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9800100 bytes 2026-10-19 [943] Annex 24 - Draft Chapter 10 of Satellite Communications and Technologies Handbook

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41871 bytes 2026-10-19 [943] Annex 23 - Draft Chapter 9 of Satellite Communications and Technologies Handbook

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63032 bytes 2026-10-19 [943] Annex 22 - Draft Chapter 5 of Satellite Communications and Technologies Handbook

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48274 bytes 2026-10-27 [943] Annex 21 - Proposals on the working document towards a preliminary draft revision of Recommendation ITU-R M.1183 - Permissible levels of interference in a digital channel of a geostationary network in mobile-satellite service in 1-3 GHz caused by other networks or systems of this service and fixed-satellite service

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271329 bytes 2026-10-27 [943] Annex 20 - Working document towards a preliminary draft new Recommendation ITU-R [MSS_SAT_ANTENNA_PATTERN] - Satellite antenna radiation patterns for non-geostationary orbit satellite antennas operating in the mobile-satellite service below 30 GHz

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397785 bytes 2026-10-27 [943] Annex 19 - Proposal for a working document towards a preliminary draft new Recommendation of methodology for protection of the terrestrial IMT systems

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534894 bytes 2026-10-27 [943] Annex 18 - Working document towards a preliminary draft revision Recommendation ITU-R M.1316-1 - Principles and a methodology for frequency sharing in the 1 610.6-1 613.8 MHz and 1 660-1 660.5 MHz bands between the mobile-satellite service (Earth-to-space) and the radio astronomy service

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93124 bytes 2026-10-27 [943] Annex 17 - Working document towards a preliminary draft revision of Recommendation ITU-R M.1480-0 - Essential technical requirements of mobile earth stations of geostationary mobile-satellite systems that are implementing the global mobile personal communications by satellite (GMPCS) - memorandum of understanding arrangements in parts of the frequency band 1-3 GHz

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4040106 bytes 2026-10-27 [943] Annex 16 - Working document towards a preliminary draft new Report ITU-R M.[WRC-31 PAI 2.9] - Technical characteristics, operational objectives, and spectrum needs of emerging RNSS Downlink systems to facilitate consideration of WRC-31 PAI 2.9

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147559 bytes 2026-10-27 [943] Annex 15 - Working document towards a preliminary draft new Report ITU-R M.[RES.609-FURTHER] - Study of alternatives to a per-satellite maximum pfd level in ensuring that no single radionavigation-satellite system or network in the 1 164-1 215 MHz frequency band uses up the entire interference allowance specified by resolves 1 of Resolution 609 (Rev.WRC-07)

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390256 bytes 2026-10-27 [943] Annex 14 - Preliminary draft new Report ITU-R M.[RES.609] - Potential analytic tools and mitigation methods to ensure the aggregate equivalent power flux-density (epfd) limit on radionavigation-satellite service (RNSS) systems and networks operating in the 1 164-1 215 MHz band, from resolves 1 of Resolution 609 (Rev.WRC-07), is not exceeded

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60413 bytes 2026-10-27 [943] Annex 13 - Preliminary draft revision to Recommendation ITU-R M.1787-7 - Description of systems and networks in the radionavigation-satellite service (space-to-Earth and space-to-space) and technical characteristics of transmitting space stations operating in the bands 1 164-1

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69030 bytes 2026-10-27 [943] Annex 12 - Working document towards a preliminary draft revision to Recommendation ITU-R M.2031-1 - Characteristics and protection criteria of receiving earth stations and characteristics of transmitting space stations in the radionavigation-satellite service (space-to-Earth) operating in the band 5 010-5 030 MHz

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54319 bytes 2026-10-27 [943] Annex 11 - Working document towards a preliminary draft new Recommendation ITU-R M.[RDSS 2.5 GHz] - Description of systems and networks in the radiodetermination-satellite service (space-to-Earth) and technical characteristics of transmitting space stations operating in the band 2 483.5-2 500 MHz

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60894 bytes 2026-10-30 [943] Annex 10 Part 11

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23120684 bytes 2026-10-29 [943] Annex 10 - Draft working document on Sharing and compatibility studies of possible new allocations to the MSS on WRC-27 agenda item 1.14

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83052 bytes 2026-10-21 [943] Annex 9 - Draft CPM text for WRC-27 agenda item 1.14

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64967494 bytes 2026-10-23 [943] Annex 8 - Part 4

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28624579 bytes 2026-10-23 [943] Annex 8 - Part 3

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44897382 bytes 2026-10-23 [943] Annex 8 - Part 2

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20554617 bytes 2026-10-23 [943] Annex 8 - Part 1

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1237816 bytes 2026-10-26 [943] Annex 8 - Working document on Sharing and compatibility studies under WRC-27 agenda item 1.13

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519685 bytes 2026-10-23 [943] Annex 7 - Draft CPM text for WRC-27 agenda item 1.13

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18481457 bytes 2026-10-28 [943] Annex 6 - Part 4

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9008386 bytes 2026-10-28 [943] Annex 6 - Part 3

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4009399 bytes 2026-10-28 [943] Annex 6 - Part 2

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8038105 bytes 2026-10-28 [943] Annex 6 - Part 1

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9702969 bytes 2026-10-28 [943] Annex 6 - Working document regarding WRC-27 agenda item 1.12 - Studies on low-data-rate non-GSO mobile-satellite systems in the mobile-satellite service

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135031 bytes 2026-10-21 [943] Annex 5 - Draft CPM text for WRC-27 agenda item 1.12

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46047 bytes 2026-10-27 [943] Annex 4 - Supporting document for CPM text on WRC-27 agenda item 1.11 comments and questions

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131228 bytes 2026-10-27 [943] Annex 3 Part 1

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171770 bytes 2026-10-27 [943] Annex 3 - Enabler table for system characteristics and sharing studies for WRC-27 agenda item 1.11

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6516342 bytes 2026-10-27 [943] Annex 2 - Part 4

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2673156 bytes 2026-10-27 [943] Annex 2 - Part 3

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2782837 bytes 2026-10-27 [943] Annex 2 - Part 2

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4444629 bytes 2026-10-27 [943] Annex 2 - Part 1

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1963850 bytes 2026-10-27 [943] Annex 2 - Working document regarding WRC-27 agenda item 1.11 - Space-to-space links in the frequency bands 1 518-1 544 MHz, 1 545-1 559 MHz, 1 610-1 645.5 MHz, 1 646.5-1 660 MHz, 1 670-1 675 MHz and 2 483.5-2 500 MHz allocated to the mobile-satellite service (MSS)

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601949 bytes 2026-10-23 [943] Annex 1 - Draft CPM text for WRC-27 agenda item 1.11
 

Document :

ITU-R R23-WP4C  Contribution  943

Title :

Report of the thirty-sixth meeting of Working Party 4C (Geneva, 7-16 October 2026)

Date :

2026-10-16

Source :

Chair, WP 4C

Access :

Restricted to TIES users [ITU-R]

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