WRC 2019 Agenda Items for WP 4A

This agenda item relates to consideration of the results of studies in accordance with Resolution 557 [COM6/9] (WRC-15), and review, and revise if necessary, the limitations mentioned in Annex 7 to Appendix 30 (Rev.WRC-12), while ensuring the protection of, and without imposing additional constraints on, assignments in the Plan and the List and the future development of the broadcasting-satellite service within the Plan, and existing and planned fixed-satellite service networks.

This agenda item relates to consideration of the use of the frequency bands 17.7-19.7 GHz (space-to-Earth) and 27.5-29.5 GHz (Earth-to-space) by earth stations in motion (ESIMs) communicating with geostationary space stations in the fixed-satellite service and take appropriate action, in accordance with Resolution 158 [COM6/17] (WRC-15).

This includes:

1. study of technical and operational characteristics,
2. to study sharing and compatibility between ESIMs and current and planned services allocated in these bands and
3. to develop, for different types of ESIMs, technical conditions and regulatory provisions for their operation to ensure protection of and not impose undue constrains on current and planned services.

This agenda item considers the development of a regulatory framework for non-GSO FSS satellite systems that may operate in the frequency bands 37.5-39.5 GHz (space-to-Earth), 39.5-42.5 GHz (space-to-Earth), 47.2-50.2 GHz (Earth-to-space) and 50.4-51.4 GHz (Earth-to-space), in accordance with Resolution 159 [COM6/18] (WRC-15).

This includes studies of:

1. technical and operational issues and regulatory provisions to protect existing GSO networks in the FSS, MSS and BSS,
2. these studies shall focus exclusively on development of EPFD limits,
3. studies and development of sharing conditions between non-GSO systems in these bands,
4. studies relating to possible revision to Resolution 750 (Rev. WRC-15) to ensure protection of EESS (passive) from aggregate non-GSO FSS interference,
5. studies to protect the radio astronomy service in relevant bands from aggregate non-GSO FSS interference.

This agenda item relates to compatibility of IMT and BSS (sound) in the frequency band 1 452-1 492 MHz in Regions 1 and 3.

The Resolution invites the ITU-R to:

1. undertake appropriate regulatory and technical studies of compatibility between these two services, in particular between IMT and BSS earth stations
2. prepare regulatory actioin that could be taken based upon these studies that coudl facilitate the long-term stability of IMT and BSS(sound) in this band

This could then be used, where appropriate, to determine the need for bilateral coordination.

This issue involves the study of technical and operational issues and regulatory provisions for new non-geostationary-satellite orbit systems in the 3 700-4 200 MHz,4 500-4 800 MHz, 5 925-6 425 MHz and 6 725-7 025 MHz frequency bands allocated to the fixed-satellite service.

The Resolution invites the ITU-R to study:

1. a possible revision of Article 21 Table 21-4 for non-GSO FSS satellites in 3 700 - 4 200 MHz while ensuring existing mobile and fixed services are protected,
2. possible revisions of the EPFD(down) and (up) in Article 22 for the 3 700 - 4 200 MHz and 5 925 - 6 425 MHz bands while ensuring the GSO networks are protected from unacceptable interference,
3. the possible development of EPFD(down) and EPFD(up) limits to include in Article 22 for the 4 500 - 4 800 MHz and 6 725 - 7 025 MHz bands for non-GSO systems while protecting GSO networks from unacceptable interference,
4. the protection of MSS feeder links in the s-E direction in the 6 700 - 7 025 MHz band from non-GSO FSS systems operating in a E-s direction,
5. development of appropriate regulatory provisions in the 4 500 - 4 800 MHz band to protect terrestrial services from non-GSO FSS systems operating in the s-E direction,
6. development of regulatory provisions to clarify that 5.440A and 5.547C would apply to ensure that non-GSO FSS systems do not cause harmful interference to or claim protection from AMT for flight testing by aircraft stations.

This agenda item relates to studies relating to spectrum needs and possible allocation of the frequency band 51.4-52.4 GHz to the fixed-satellite service (Earth-to-space).

The Resolution invites the ITU-R to:

1. study the additional spectrum needs for development of the FSS taking into account bands currently allocated to that service, the conditions of their use and the possible optimization of these frequencies to increase spectrum efficiency,
2. sharing and compatibility studies with existing services on a primary and secondary basis including as appropriate adjacent bands to determine the suitability of new primary allocations for FSS at 51.4 - 52.4 GHz (E-s) limited to FSS feeder links for GSO use and associated regulations,
3. studies towards possible revision of Resolution 750 (Rev. WRC-12) so that systems in the passive band 52.6 - 54.25 GHz are protected and
4. studies regarding the protection of the radio astronomy service and including any appropriate regulatory measures.