What developments can we expect to see.

• The addition of primary allocations for High-altitude platforms like IMT base stations in the mobile services.
• The expansion of digital dividends 1 & 2 to allow for the efficient use of digital TV in Region 1 and freeing up spectrum for mobile services.
• The installation of aeronautical safety-of-life applications in existing HF bands.
• The allocation of new spectrum for aeronautical mobile services to support non-safety aeronautical mobile applications.
• The modernisation of GMDSS and implementation of eNavigation.
• New primary allocations IMT/5G/LTE to satisfy coverage and capacity needs of existing cellular services (such as 3 600-3 800 MHz) and future frequency developments.

With focus placed on satellite use and sharing consideration needs to be given to interferences from terrestrial services. Interference analysis assesses the risks to these bands for adjacent spectrum bands. Key discussions in this sector include:

• New aeronautical mobile-satellite service allocations in 117.975-137 MHz.
• The use of fixed-satellite service networks by control and non-payload communications of unmanned aircraft systems.
• Additional secondary allocations for Earth exploration-satellite service for spaceborne radar sounders within the range of frequencies around 45 MHz.
• Upgrading the allocation 14.8-15.35 GHz for space research services.
• Adjustments to frequency allocations or potential new frequency allocations for Earth exploration-satellite service (passive) in 231.5-252 GHz.
• Harmonisation of 12.75-13.25 GHz (Earth-to-space) by earth stations on aircraft and vessels communicating with geostationary space stations in the fixed-satellite service globally.
• Use of space-to-Earth and Earth-to-space by non-geostationary fixed-satellite service earth stations in motion.
• Use of inter-satellite links in specific frequency bands by adding an inter-satellite service allocation where appropriate.
• Addition of new allocations to the mobile-satellite service for future narrowband mobile-satellite services.
• Potential changes to the publication, coordination, notification and recording procedure for assignments to satellite services.

Across the aeronautical and maritime sectors, WRC will look at protecting aeronautical and maritime mobile services, in addition to:

• Reviewing the power flux-density criteria for 4 800-4 990 MHz band.
• Identifying bandwidth for IMT services.
• Considering new aeronautical mobile-satellite services in the 117.975-137 MHz band.
• Using fixed-satellite service networks by control and non-payload communications of unmanned aircraft systems to allow ex-orbital vehicles to communicate at higher altitudes than conventional aircraft with a sub-orbital trajectory.