WRC 2027 Agenda Items for WP 5D

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 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 is to consider the technical and operational issues and regulatory provisions for space-to-space links among GSO and non-GSO satellites in 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 MSS. The ITU-R is invited to:

1. study the technical and operational characteristics of different types of non-GSO space stations that operate or plan to operate space-to-space links with GSO networks in the frequency bands 1 626.5 - 1 645.5 MHz and 1 646.5 - 1 660 MHz (Earth-to-space) and 1 525 - 1 544 MHz and 1 545 - 1 559 MHz (space-to-Earth)
2. study the technical and operational characteristics of different types of non-GSO space stations that operate or plan to operate space-to-space links with non-GSO systems or GSO networks in the frequency bands 1 610 - 1 626.5 MHz and 1 670 - 1 675 MHz (Earth-to-space) and 1 518 - 1 525 MHz, 1 613.8 - 1 626.5 and 2 483.5 - 2 500 MHz (space-to-Earth)
3. study sharing and compatibility between space-to-space links in the cases described above with current and planned stations of the MSS, other existing primary services allocated in the same frequency bands, other existing primary services allocated in adjacent frequency bands and existing passive services allocated in adjacent frequency bands
4. develop technical conditions and regulatory provisions for the operation of space-to-space links in these bands including MSS (space-to-space) allocations of the additional of inter-satellite service (ISS)

Space-to-space links should only operate in the same direction as existing MSS allocations.

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

This agenda item is to consider possible allocations to the MSS and possible regulatory actions in the frequency bands 1 427 - 1 432 MHz (space-to-Earth), 1 645.5 - 1 646.5 MHz (space-to-Earth)(Earth-to-space), 1 880 - 1 920 MHz (space-to-Earth)(Earth-to-space) and 2 010 - 2 025 MHz (space-to-Earth)(Earth-to-space) required for future development of low-date-rate non-GSO MSS.

WRC-23 is invited to:

1. study the spectrum requirements, technical and operational characteristics and conditions for non-GSO low-data-rate MSS systems including mitigation techniques that would allow coexistence of these systems in the same frequency band
2. study sharing and compatibility between the non-GSO low-data-rate MSS systems and the existing primary services operating in these and adjacent bands in order to ensure protection of existing services.

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

This agenda item is to consider studies of a possible new allocation to the MSS for direct connectivity between space stations and IMT user equipment to complement terrestrial IMT network coverage. The ITU-R is invited to:

1. study possible allocations to the MSS in the frequency range between 694/698 MHz and 2.7 GHz taking into account IMT frequency arrangements addressed in the most recent version of Recommendation ITU-R M.1036.
2. study spectrum requirements and on technical, operational and regulatory matters related to the implementation of MSS for direct connectivity to the IMT user equipment to complement the terrestrial IMT network coverage
3. study sharing and compatibility between incumbent service, including in adjacent frequency bands, to ensure the their protection
4. study possible technical and operational measures to ensure that stations in the MSS do not cause harmful interference or claim protection from, stations operating in the mobile service

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

This agenda item is to consider possible additional allocations to the MSS. It resolves to invite the ITU-R to:

1. study the relevant spectrum requirements and technical, operational and regulatory matters for the MSS in connection with possible new allocations to the MSS in the frequency bands 2 010 - 2 025 MHz (Earth-to-space) and 2 160 - 2 170 MHz (space-to-Earth) in Regions 1 and 3 and 2 120 - 2 160 MHz (space-to-Earth) in all regions.
2. study sharing and compatibility of possible new allocations to the MSS in these bands to ensure the protection of existing services allocated on a primary basis and also in adjacent frequency bands, without adversely affecting those services
3. study possible technical, operational and regulatory measures that ensure the protection of existing services and their continued operation and future development without imposing additional regulatory or technical constraints on those services, while ensuring their protection from harmful interference, when considering possible additional allocations to the MSS

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

This agenda item is consider studies on frequency-related matters, including possible new or modified space research service (space-to-space) allocations, for future development of communications on the lunar surface and between lunar orbit and the lunar surface. The ITU-R is invited to:

1. study the spectrum needs of systems in the SRS which may operate on the lunar surface or systems in lunar orbit communicating with systems on the lunar surface, in the frequency ranges:
   • 390 - 406.1 MHz, 420 - 430 MHz and 440 - 450 MHz outside the shielded zone of the Moon (SZM)
   • 2 400 - 2 690 MHz, 3 500 - 3 800 MHz, 5 150 - 5 725 MHz, 5 775 - 5 925 MHz, 7 190 - 7 235 MHz, 8 450 - 8 500 MHz and 25.25 - 28.35 GHz
2. study the technical and operational characteristics as well as protection criteria of systems in the SRS that are planned for operation in the frequency bands above as well as protection criteria to be applied for the protection of the radio astronomy service (RAS) and SRS active and passive sensors on the lunar surface and in lunar orbit
3. study the propagation considerations for lunar surface systems and lunar-orbiting systems operating in the frequencies above
4. study sharing and compatibility related to systems in the SRS that are planned for operation in the frequency ranges above to ensure protection of radiocommunication services in these bands (SRS, FSS, BSS, ISS, EESS, ISM, fixed, mobile etc.) and in particular the RAS
5. study potential new or modified frequency allocations and/or identifications to the SRS with appropriate regulatory provisions, for communications on the lunar surface or in lunar orbit communicating with systems on the lunar surface
6. to study spectrum needs for lunar communications which may be needed for communications between the Earth, lunar-orbiting spacecraft and the lunar surface
7. to study whether future radiocommunication systems in the vicinity of the Moon can be accommodated within existing SRS and whether the regulatory provisions described in the Radio Regulations are sufficient

With the exception of the last item, WRC-27 is invited to review the results of these studies and take necessary actions, as appropriate

Studies of technical and regulatory provisions necessary to protect radio astronomy operating in specific Radio Quiet Zones (RQZs) and, in frequency bands allocated to the radio astronomy service on a primary basis globally, from aggregate radio-frequency interference caused by systems in the non-geostationary-satellite orbit. The ITU-R is invited to:

1. study how interference from unwanted emissions from a single non-GSO satellite system operating in the adjacent and nearby frequency bands to those in Table 1 affects the operation of RAS station in bands for which they are primary
2. study how the aggregate interference from unwanted emissions from multiple non-GSO satellite systems in the adjacent and nearby frequency bands in Table 1 affect the operation of RAS stations in bands for which they are primary
3. study possible recognition of RQZs based on their characteristics and existing ITU-R studies
4. study how the aggregate interference from single and multiple non-GSO satellites systems affects the operation of RAS stations in the RQZs
5. study on new coexistence measures between non-GSO satellite systems and RAS station in the RQZs
6. study methods to calculate the necessary separation distances between gateways of non-GSO systems and RAS stations protected by the RQZs

WRC-23 is invited to review the results of these studies and take necessary actions, as appropriate

This agenda item is to consider regulatory provisions for receive-only space weather sensors and their protection in the Radio Regulations, taking into account the results of ITU Radiocommunication Sector studies, in accordance with Resolution 682. The ITU-R is invited to:

1. study spectrum needs and appropriate protection criteria for receive-only space weather sensors, as well as system characteristics, as appropriate
2. sharing and compatibility studies pertaining to potential new primary allocations to MetAids (space weather) in the frequency bands 27.5 - 28.0 MHz, 29.7 - 30.2 MHz, 32.3 - 32.6 MHz, 37.5 - 38.325 MHz, 73.0 - 74.6 MHz and 608 - 614 MHz for receive only sensors
3. study possible regulatory provisions in the Radio Regulations to accommodate the possibility for an administration that desires to notify a receive-only space weather sensor station to be included in the MIFR

Any possible new primary MetAids (space weather) allocations shall not claim protection from, nor constrain the future development of, incumbent services in these frequency bands or adjacent frequency bands

WRC-23 is invited to review the results of these studies and take necessary actions, as appropriate

This agenda item is to consider possible primary allocations in all Regions to the Earth exploration-satellite service (passive) in the frequency bands 4 200 - 4 400 MHz and 8 400 - 8 500 MHz without protection from existing services in these frequency bands and in adjacent bands.