WRC 2027 Agenda Items for WP 1B

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 is to consider studies on sharing and compatibility and develop technical conditions for use of IMT in the frequency bands 4.4 - 4.8 GHz, 7.125 - 8.4 GHz (or parts of) and 14.8 - 15.35 GHz taking into account existing primary services operating in those bands or adjacent frequency bands.

The ITU-R is invited to study:

1. the technical, operational and regulatory issues pertaining to the possible use of the terrestrial component of IMT in these bands taking into account:

• the evolving needs to meet emerging demand for IMT
• technical and operational characteristics of terrestrial IMT that would operate in these bands including the evolution of IMT through advances in technology and spectrally efficient techniques
• deployment scenarios envisaged for IMT systems and related requirements of balanced coverage and capacity
• the needs of developing countries
• the time-frame in which spectrum would be needed

2. sharing and compatibility studies with a view to ensuring the protection of services for which the band is allocated on primary basis including protection of stations operating in international waters or airspace which cannot be registered in the MIFR without imposing additional regulatory or technical constraints on these services and also on services in adjacent bands

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