Metadata Search
Metadata Search of ITU-R Quesitons is available by Study Group, Responsible WPs, Approval year, Target year and Question category.
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Study Group/Resp. WPs (Responsible Study Groups/Working Parties and related groups)
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Study Groups/Working Parties
SG1 - Spectrum management | WP1A - Spectrum engineering techniques WP1B - Spectrum management methodologies and economic strategies WP1C - Spectrum monitoring |
SG3 - Radiowave propagation | WP3J - Propagation fundamentals WP3K - Point-to-area propagation WP3L - Ionospheric propagation and radio noise WP3M - Point-to-point and Earth-space propagation |
SG4 - Satellite services | WP4A - Efficient orbit/spectrum utilization for FSS and BSS WP4B - Systems, air interfaces, performance and availability objectives for FSS, BSS and MSS, including IP-based applications and satellite news gathering WP4C - Efficient orbit/spectrum utilization for MSS and RDSS * - * WP4C will also deal with the performance issues related to RDSS |
SG5 - Terrestrial services | WP5A - Land mobile service above 30 MHz* (excluding IMT); wireless access in the fixed service; amateur and amateur-satellite services * including the exact frequency of 30 MHz WP5B - Maritime mobile service including Global Maritime Distress and Safety System (GMDSS); aeronautical mobile service and radiodetermination service WP5C - Fixed wireless systems; HF and other systems below 30 MHz in the fixed and land mobile services WP5D - IMT Systems |
SG6 - Broadcasting service | WP6A - Terrestrial broadcasting delivery WP6B - Broadcast service assembly and access WP6C - Programme production and quality assessment |
SG7 - Science services | WP7A - Time signals and frequency standard emissions
WP7B - Space radiocommunication applications WP7C - Remote sensing systems WP7D - Radio astronomy |
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Related Groups (not used for ITU-R Questions)
CCV - Coordination Committee for Vocabulary |
CPM - Conference Preparatory Meeting |
SC - Special Committee on Regulatory/Procedural Matters |
JTG4567 - Joint Task Group 4-5-6-7 (WRC-15 Agenda items 1.1 and 1.2) |
- Approval year (Approval year of the ITU-R Questions)
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Target year (Target year of the ITU-R Questions)
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Question category (used to identify the priority and urgency of Questions to be studied) Please refer to
Resolution ITU-R 5.
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C: Conference-oriented Questions associated with work related to specific preparations for, and decisions of, world and regional radiocommunication conferences:
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C1: very urgent and priority studies, required for the next World Radiocommunication Conference
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C2: urgent studies, expected to be required for other radiocommunication conferences
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S: Questions which are intended to respond to:
- matters referred to the Radiocommunication Assembly by the Plenipotentiary Conference, any other conference, the Council, the Radio Regulations Board
- advances in radiocommunication technology or spectrum management
- changes in radio usage or operation -
S1: urgent studies which are intended to be completed within two years
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S2: important studies, necessary for the development of radiocommunications
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S3: required studies, expected to facilitate the development of radiocommunications