WRC 2027 Agenda Items for WP 5B

Maritime mobile service including the Global Maritime Distress and Safety System (GMDSS); the aeronautical mobile service and the radiodetermination service

The list below shows all the WRC 2027 Agenda Items for which this is the lead group. Click on an Agenda Item or Resolution to get more information about which Visualyse product to use and how Transfinite consultants could assist in studying this problem.

Agenda Item Description
Agenda Item 1.8

This agenda item is to consider possible additional allocations to the radiolocation service (RLS) on a primary basis in the frequency range 231-275 GHz and possible new identifications for the radiolocation service applications in frequency bands in the frequency range 275 - 700 GHz for millimetric and sub-millimetric wave imaging systems.

The ITU-R is invited to study:

  1. technical and operational characteristics including protection criteria for receive-only and active millimetric and sub-millimetric wave RLS
  2. studies on globally harmonized spectrum for RLS
  3. sharing and compatibility studies (in-band and adjacent) for RLS and other services in the frequency range 231.5 - 275 GHz while ensuring protection for the current use and further development of the incumbent services allocated to this frequency range
  4. sharing and compatibility studies (in-band and adjacent band) for RLS applications with EESS(passive), space research service (passive) and RAS applications in the frequency range 275-700 GHz while maintaining protection for the passive service applications identified in No. 5.565
  5. sharing and compatibility studies (in-band and adjacent bands) for RLS applications with fixed service and land mobile service applications in the frequency range 275 - 450 GHz as identified in No. 5.564A

WRC-27 is invited to consider the results of the above studies and take necessary actions, as appropriate.
Agenda Item 1.9

This agenda item is to review Appendix 26 of the Radio Regulations in support of aeronautical mobile (OR) high frequency modernization.

The ITU-R is invited to study:

  1. the introduction of new technologies that enhance performance, including but not limited to, new classes of emission and wideband systems
  2. the definition of the relevant technical and operational characteristics and conduct sharing and compatibility studies with existing aeronautical mobile (OR) service systems and with other incumbent services that are allocated on a primary basis in the same or adjacent bands
  3. identification of any potential modifications to Appendix 26 without modifying the existing area allotments while taking into account that the current use of the narrow band systems shall remain unchanged and shall not be impacted nor precluded by any revision to Appendix 26.

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