WRC 2023 Agenda Items for WP 4A

This agenda item considers identification of frequency bands 3 300 - 3 400 MHz (Region 2 and amend footnote in Region 1), 3 600 - 3 800 MHz (Region 2), 6 425 - 7 025 MHz (Region 1), 7 025 - 7 125 MHz (globally) and 10.0 - 10.5 GHz (Region 2) for IMT including possible allocations to the mobile service on a primary basis.

The ITU-R is invited to study:

1. technical, operational and regulatory issues pertaining to possible use of the terrestrial component of IMT in the bands listed taking into account evolving needs, technical and operational characteristics of terrestrial IMT systems, evolution of IMT, deployment scenarios, needs of developing countries and time-frame in which spectrum would be needed
2. sharing and compatibility studies (including with services in adjacent bands where appropriate) in order to protect services with an existing primary allocation, without imposing additional regulatory or technical constraints, and also, as appropriate, on services in adjacent bands

This agenda item considers possible primary allocation in Region 1 to the mobile service (except aeronautical) in the band 3 600 - 3 800 MHz.

The ITU-R is invited to study sharing and compatibility studies (including with services in adjacent bands where appropriate) in order to protect services with an existing primary allocation

This agenda item considers use of high altitude platform stations as IMT base stations (HIBS) in the mobile service in some bands below 2.7 GHz. In particular, the bands:

1. 694 - 960 MHz
2. 1 710 - 1 885 MHz (1 710 - 1 815 MHz for uplink only in Region 3)
3. 2 500 - 2 690 MHz (2 500 - 2 535 MHz for uplink only in Region 3 except 2 655 - 2 690 MHz in Region 3)

The ITU-R is invited to study:

1. spectrum needs for HIBS
2. sharing and compatibility studies (including with services in adjacent bands where appropriate) in order to protect services with an existing primary allocation without imposing any additional technical or regulatory constraints in their deployment
3. modifications to existing footnote and resolutions in order to facilitate use of HIBS with the latest radio interface technologies of IMT
4. the definition of HIBS and possible modification to the RR as appropriate

This agenda item is to consider regulatory provisions to facilitate radiocommunications for sub-orbital vehicles

The ITU-R is invited to study:

1. the spectrum needs for communications between station on sub-orbital vehicles and terrestrial / space stations providing functions such as voice, data, TT&C etc.
2. appropriate modifications, if any, to the RR, excluding any new allocations or changes to existing allocations, to accommodate sub-orbital vehicles including the status of these stations, technical and regulatory conditions for sub-orbital vehicles to operate under aeronautical regulations and to facilitate radiocommunications would enable sub-orbital vehicles to integrate into airspace and be interoperable with international civil aviation, to define relevant technical characteristics and protection criteria relevant for studies and to conduct sharing and compatibility studies with incumbent services that are allocated on a primary basis in the same or adjacent frequency bands
3. identify as a result of studies if there is a need for access to additional spectrum that should be addressed after WRC-23

This agenda item is to consider appropriate regulations with a view to reviewing and if necessary revising Resolution 155 (Rec. WRC-19) to accommodate the use of fixed-satellite service (FSS) networks by control and non-payload communications of unmanned aircraft systems

The ITU-R is invited to study:

1. the technical, operational and regulatory aspects in relation to the implementation of Resolution 155 (Rev. WRC-19) taking into account the progress obtained by ICAO in the completion of SARPs on the use of FSS for the UAS CNPC links.
2. to review No. 5.484B and Resolution 155 (Rev. WRC-19) taking into account the results of the above studies.

This agenda item is to conduct studies on spectrum needs, coexistence with radiocommunication services and regulatory measures for possible new allocations for the aeronautical mobile service for the user of non-safety aeronautical mobile applications.

The ITU-R is invited to study:

1. spectrum needs for new non-safety aeronautical mobile applications for air-to-air, ground-to-air and air-to-ground communications of aircraft systems.
2. sharing and compatibility studies in the frequency band 22 - 22.21 GHz, already allocated on a primary basis to the mobile except aeronautical mobile service, in order to evaluate the possible revision or deletion of the "except aeronautical mobile" restriction while ensuring the protection of primary services in the considered frequency bands and, as appropriate, in adjacent frequency bands.
3. sharing and compatibility studies on possible new primary allocations to the aeronautical mobile service for non-safety aeronautical applications in the frequency band 15.4 - 15.7 GHz while ensuring the protection of primary services in the considered frequency bands and, as appropriate, adjacent bands
4. definition of appropriate protection for passive services and radio astronomy allocated in adjacent bands from unwanted emission of AMS

This agenda item is to review and consider possible adjustments of the existing or possible new primary frequency allocations to EESS (passive) in the frequency range 231.5 - 252 GHz to ensure alignment with more up-to-date remote-sensing observation requirements. The ITU-R is invited to:

1. to review the existing primary allocations to the EESS (passive) in the frequency range 231.5 - 252 GHz in order to analyse if these allocations are aligned with observation requirements of passive microwave sensors
2. to study the impact that any changes to the EESS (passive) allocations in the frequency range 231.5 - 252 GHz might have on other primary services in these frequency bands
3. to study, as appropriate, possible adjustments to the EESS (passive) allocations in the frequency range 231.5 - 252 GHz, taking into account the results of studies

WRC-23 is invited to review the results of these studies with a view to adjusting existing allocations or adding possible new allocations, as appropriate, to the EESS (passive) in the frequency range 231.5 - 252 GHz without unduly constraining the other primary services currently allocated in this frequency range

This agenda item is to consider studies relating to spectrum needs and potential new allocations to the mobile-satellite service for future development of narrowband mobile-satellite systems. The ITU-R is invited to:

1. conduct studies on spectrum and operational requirements as well as system characteristics of low-data rate systems for the collection of data from and management of terrestrial devices in the MSS as described in the Resolution considering a) and limited to the basic characteristics in recognising c)
2. to conduct sharing and compatibility studies with existing primary services to determine the suitability of new allocations to the MSS with a view to protecting the primary services in the following frequency bands and adjacent frequency bands: 1 695 - 1 710 MHz in Region 2, 2 010 - 2 025 MHz in Region 1, 3 300 - 3 315 MHz, 3 385 - 3 400 MHz in Region 2
3. to consider possible new primary or secondary allocations, with the necessary technical limitations, taking into account the characteristics described in recognising c) to the MSS for non-GSO satellites operating low-data rate systems for the collection of data from, and management of, terrestrial devices based on the result of sharing and compatibility studies while ensuring protection of existing primary services in those frequency bands, and adjacent frequency bands, without causing undue constraints on their further developments

WRC-23 is invited to determine, on the basis of the studies conducted under the resolves to invite the ITU-R above, appropriate regulatory action

This agenda item is to study the use of International Mobile Telecommunication (IMT) system for fixed wireless broadband in the frequency bands allocated to the fixed services on primary basis.

The ITU-R is invited to conduct any necessary studies on the use of IMT systems for fixed wireless broadband in the frequency bands allocated to the fixed service on primary basis, taking into account the relevant ITU-R studies, Handbooks, Recommendations and Reports

The Director of the BR is instructed to report on the results of the ITU-R studies to WRC-23