WRC 2027 Agenda Items for WP 4A

This agenda item relates to the technical and operational conditions for the use of parts of Q/V band for aeronautical or maritime Earth Stations in Motion (A-ESIMs and M-ESIMs), in particular 47.2 - 50.2 GHz and 50.4 - 51.4 GHz.

Studies requested of the ITU-R include:

1. the spectrum needs and technical operational characteristics of A-ESIMs and M-ESIMS that would operate within the FSS in these bands
2. sharing and compatibility between A-ESIMs and M-ESIMs and stations in primary service in these bands and passive services in adjacent bands
3. other, regulatory related studies

WRC-27 is invited to consider the results of the above studies and take necessary actions, as appropriate.

This agenda item considers possible revisions of sharing conditions in the frequency band 13.75-14 GHz to allow the use of uplink fixed-satellite service earth stations with smaller antenna sizes.

The ITU-R is invited to study possible changes to the minimum antenna size and associated power limitations to protect the services as stipulated in Nos 5.502 and 5.303.

WRC-27 is invited to consider the results of the above studies and take necessary actions, as appropriate.

This agenda item relates to use of 51.4 - 52.4 GHz by gateway earth stations transmitting to non-GSO systems in the FSS. The ITU-R is invited to complete by WRC-27:

1. sharing and compatibility studies with existing services, including those in adjacent bands, to allow operation of non-GSO gateways in this band
2. in particular, to consider the protection of EESS(passive) services and the conditions in Resolution 750
3. studies of sharing and protection of radio astronomy observations in 51.4 - 54.25 GHz under 4.446
4. studies regarding the protection of GSO FSS space stations from the emissions of non-GSO FSS gateway earth stations and possible inclusion of these bands in Resolutions 769 and Resolution 770

WRC-27 is invited to consider the results of the above studies and take necessary actions, as appropriate.

This agenda item is to consider a new primary allocation in Region 3 to the fixed-satellite service (FSS) in the space-to-Earth direction in the frequency band 17.3 - 17.7 GHz and to the broadcasting-satellite service (BSS) in the space-to-Earth direction, while protecting existing primary services in the band. Its resolves to protect radiocommunication services to which the band is allocated on a primary basis, in particular assignments contained in Appendix 30A.

The ITU-R is invited to conduct and complete in time for WRC-27

1. studies on sharing between the FSS (space-to-Earth), the BSS (space-to-Earth) and the FSS (Earth-to-space) in order to consider the possible new allocations while ensuring the protection of existing primary allocations in the same and adjacent bands
2. consideration of the application of Region 2 non-GSO FSS epfd limits in 17.3 - 17.7 GHz in Regions 1 and 3

WRC-27 is invited to consider the results of the above studies and take necessary actions, as appropriate.

This agenda item is to consider regulatory measures and their implementability to limit the unauthorized operations of non-GSO ES in the FSS and MSS and associated issues related to the service area of non-GSO satellite systems in the FSS and MSS.

The ITU-R is invited to:

1. study regulatory measure to limit the unauthorized operations of non-GSO FSS and MSS earth stations in the Earth-to-space direction
2. studies on regulatory measures that take account of some administrations wishing to exclude operation within their territory without adversely affecting the provision of services in the rest of the non-GSO system's service area

WRC-27 is invited to consider the results of the above studies and take necessary actions, as appropriate.

This agenda item is to consider technical and regulatory measures for FSS networks/systems in the 37.5 - 42.5 GHz (space-to-Earth), 42.5-43.5 GHz, 47.2-50.2 GHz and 50.4 0 51.4 GHz (Earth-to-space) for equitable access to these frequency bands

The ITU-R is invited to study the technical and regulatory measures for FSS satellite networks/systems in these bands or portions of for equitable access while ensuring the protection of existing primary services in these bands and in adjacent bands taking into account the needs of developing countries:

1. without adversely affecting those services, specifically the operation of satellite networks and systems in those bands
2. without changing measure to protect terrestrial services from unacceptable interference

WRC-27 is invited to consider the results of the above studies and take necessary actions, as appropriate.

This agenda item relates to consideration of possible changes, and other options, in response to Resolution 86 (Rev. Marrakesh, 2002) of the Plenipotentiary Conference, an advance publication, coordination, notification and recording procedures for frequency assignments pertaining to satellite networks, in accordance with Resolution 86 (Rev.WRC-07), in order to facilitate rational, efficient and economical use of radio frequencies and any associated orbits, including the geostationary-satellite orbit.

1. proposals which deal with deficiencies and improvements in the advance publication, coordination, notification and recording procedures in the Radio Regulations for space services
2. ensuring these procedures and related appendices, reflect the latest technologies, as far as possible.