ITU-R Working Party 4B (WP 4B) - Systems, air interfaces, performance and availability objectives for FSS, BSS and MSS, including IP-based applications and satellite news gathering

ITU-R Working Party 4C (WP 4C) - Efficient orbit/spectrum utilization for MSS and RDSS

ITU-R Working Party 5D (WP 5D) - IMT Systems

ITU-R Study Group 1 (SG 1) - Spectrum management

ITU-R Study Group 3 | Radiowave propagation

ITU-R Working Party 3L (WP 3L) - Ionospheric propagation and radio noise

ITU-R Working Party 3M (WP 3M) - Point-to-point and Earth-space propagation

ITU-R Working Party 3K (WP 3K) - Point-to-area propagation

ITU-R Working Party 3J | Propagation fundamentals

ITU-T Focus Group on Testbeds Federations for IMT-2020 and beyond (FG-TBFxG)