WRC 2019 Agenda Items for WP 4A

This agenda item relates to study of the spectrum needs for telemetry, tracking and command in the space operation service for non-GSO satellites with short duration missions, to assess the suitability of existing allocations to the space operation service and, if necessary, to consider new allocations, in accordance with Resolution 659 [COM6/19] (WRC-15).

The Resolution notes that short duration missions typically extend for less than 3 years.

The AI includes:

1. study of the spectrum requirements for TT&C in the space operation service for short duration missions,
2. to assess the suitability of existing space operation service allocations below 1 GHz taking into account current use and
3. if existing allocations are insufficient, conduct sharing and compatibility studies including mitigation techniques to protect incumbent services, both in-band and in adjacent bands, in order to consider possible new allocations or an upgrade to an existing allocations to the space operation service within 150.05 - 174 MHz and 400.15 - 420 MHz.

This agenda item relates to consideration of spectrum needs and regulatory provisions for the introduction and use of the Global Aeronautical Distress and Safety System (GADSS), in accordance with Resolution 426 [COM6/11] (WRC-15).

GADSS is intended to address the timely identification and location of an aircraft during all phases of flight as well as distress and emergency situations and to use existing and new applications to support search and rescue and flight data retrieval.

In particular:

1. to study terrestrial and satellite components including
   1. data requirements, radiocommunication requirements relating to safety of life applications, performance criteria
   2. existing allocations to determine whether additional spectrum is required
   3. studies on sharing and/or compatibility with existing services and
2. to study existing regulatory provisions to determine whether additional regulatory measures might be necessary.

This agenda item relates to taking necessary actions, as appropriate, to facilitate global or regional harmonized frequency bands to support railway radiocommunication systems between train and trackside within existing mobile service allocations, in accordance with Resolution 236 [COM6/12] (WRC-15).

The Resolution notes that Study Group 5 is studying relevant technical and operational characteristics for railway radiocommunication systems.

It also emphasizes that the provisions of Nos. 1.59 and 4.10 (relating to safety services) do not apply for railway radiocommunication systems.

The ITU-R is invited to study the spectrum needs, technical and operational characteristics and implementation of railway radiocommunication systems between train and trackside.

This agenda item relates to consideration of possible global or regional harmonized frequency bands, to the maximum extent possible, for the implementation of evolving Intelligent Transport Systems (ITS) under existing mobile-service allocations, in accordance with Resolution 237 [COM6/13] (WRC-15).

ITS systems are communication applications for the purpose of improving traffic management and assisting safe driving and the Resolution notes use of bands around 5.8 GHz for short range applications.

It also emphasizes that the provisions of Nos. 1.59 and 4.10 (relating to safety services) do not apply for railway radiocommunication systems.

The ITU-R is invited to carry out studies on technical and operational aspects of evolving ITS implementation using existing mobile-service allocations.

This agenda item relates to consideration of identification of frequency bands for the future development of International Mobile Telecommunications (IMT), including possible additional allocations to the mobile service on a primary basis, in accordance with Resolution 238 [COM6/20] (WRC-15). It calls for studies on frequency-related matters for IMT identification including possible additional allocations to the mobile services on a primary basis in portion(s) of the frequency range between 24.25 and 86 GHz.

The ITU-R is invited to study:

1. spectrum needs of IMT taking into account factors such as technical and operational parameters of IMT, deployment scenarios and time frames,
2. appropriate sharing and compatibility studies taking into account the protection of primary services, including adjacent bands where appropriate.

This agenda item relates to consideration, on the basis of ITU-R studies in accordance with Resolution 160 [COM6/21] (WRC-15), of appropriate regulatory actions for high-altitude platform stations (HAPS), within existing fixed-service allocations.

The ITU-R is invited to study:

1. the additional spectrum needs for gateway and fixed terminal links for HAPS taking into account the existing identifications and deployments of HAPS, deployment scenarios for HAPS, technical and operational characteristics of HAPS,
2. the suitability of using existing identifications,
3. appropriate modifications to existing regulations in order to facilitate HAPS use in currently identified frequency bands,
4. frequency bands 38 - 39.5 GHz globally and in Region 2 21.4 - 22 GHz and 24.25 - 27.5 GHz, already allocated to the FS on a primary basis not subject to Appendices 30, 30A and 30B, to meet any spectrum needs not met by 1. and 2.

These studies shall include sharing and compatibility studies to ensure protection of existing services in the bands identified and if necessary adjacent bands.

This agenda item relates to consideration of identification of frequency bands for use by administrations for the land-mobile and fixed services applications operating in the frequency range 275-450 GHz, in accordance with Resolution 767 [COM6/14] (WRC-15).

The ITU-R is invited to:

1. identify the technical and operational characteristics of systems in the land-mobile and fixed services operating above 275 GHz,
2. to study these system's spectrum needs,
3. to develop propagation models appropriate for this frequency range to support compatibility analysis between land-mobile, fixed and passive services,
4. to conduct sharing studies between these services while maintaining protection of the passive services in 5.565, and
5. to identify candidate frequency bands for the land-mobile and fixed services taking into account the results of 1-4 above.

This agenda item relates to consideration of issues related to wireless access systems, including radio local area networks (WAS/RLAN), in the frequency bands between 5 150 MHz and 5 925 MHz, and take the appropriate regulatory actions, including additional spectrum allocations to the mobile service, in accordance with Resolution 239 [COM6/22] (WRC-15).

The ITU-R is invited to:

1. study WAS/RLAN technical characteristics and operational requirements,
2. conduct studies with a view to identify potential WA/RLAN mitigation techniques to facilitate sharing with incumbent services at 5 150 - 5 350 MHz, 5 350 - 5 470 MHz, 5 725 - 5 850 and 5 850 - 5925 MHz,
3. to perform sharing and compatibility studies in the band 5 150 - 5 350 MHz of the possibility of enabling outdoor WLAN/RLAN operations
4. to conduct further sharing and compatibility studies between WA/RLAN applications and incumbent services at 5 350 - 5 470 MHz addressing:
   1. whether additional mitigation techniques would provide coexistence with EESS (active) and SRS (active) systems,
   2. with radio determination systems and,
   3. hence whether an allocation could be made to the mobile service for use by WAS/RLANs,
5. to conduct detailed sharing and compatibility studies including mitigation techniques between WAS/RLAN and incumbent services in the band 5 725 - 5 850 MHz with a view of enabling a mobile service to accommodate WAS/RLAN use, and
6. to conduct detailed sharing and compatibility studies including mitigation techniques between WAS/RLAN and incumbent services in the band 5 850 - 5 925 MHz with a view to accommodating WAS/RLAN use under the existing mobile allocation while not imposing any additional constraints on the existing services.

This agenda item relates to stations on board sub-orbital vehicles, and it invites the ITU-R to:

1. conduct studies to identify any required technical and operational measures that could assist in avoiding harmful interference,
2. conduct studies to determine spectrum requirements and a possible future agenda item for WRC-23 and
3. complete these studies in the existing study cycle.

This agenda item relates to urgent studies within the ITU-R concerning the need for additional measures to limit uplink transmission of terminals in accordance with RR 18.1 and possible methods that will assist administrations in managing unauthorized operation of earth station terminals deployed within its territory.