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Review of ITU-R Study Group Activities
Kevin A. Hughes
Radiocommunication Bureau
ITU-R objective
• “…to ensure rational, equitable, efficient and economical use of the spectrum by all services, ……
• …to carry out studies and adopt Recommendations on radiocommunication matters”
ITU-R objective
Objective achieved through (inter alia):
• World (and Regional) Radiocommunication Conferences
• Approval of Recommendations
Technical studies are required
which are conducted in Study Groups
ITU-R Study Groups
• Groups of experts from ITU membership
• Draft technical bases for WRCs (and RRCs)
• Draft Recommendations• technical characteristics
• operational procedures
• Compile Handbooks
Study Groups
• SG 1: Spectrum management
• SG 3: Radiowave propagation
• SG 4: Fixed-satellite service
• SG 6: Broadcasting service
• SG 7: Science services
• SG 8: Mobile services
• SG 9: Fixed service
ITU-R Study Groups
• Currently 7 Study Groups• Subordinate groups
• Working Party• Task Group• Rapporteur Group• Joint …….
• Coordination Committee for Vocabulary• Special Committee (regulatory/procedural)• CPM - Conference Preparatory Meeting
Scope of Study Group 1(Spectrum management)
• Principles and techniques for• spectrum management
• sharing criteria and methods
• spectrum monitoring
• long-term strategies for spectrum utilization
• Inter-service sharing and compatibility
SG 1- some key areas of study -
• Unwanted emissions• out-of-band (OOB) and spurious emission domains• protection of safety and passive services
• Spectrum management methodologies• long-term planning for national SM• economic approaches
• Handbooks• Spectrum monitoring• National spectrum management
Scope of Study Group 3(Radiowave propagation)
Propagation of radiowaves in ionized and non-ionized media and the characteristics of radio noise, for the purpose of improving radiocommunication systems
SG 3- some key areas of study -
• Global mapping of radiometeorological parameters• rain intensity, water vapour density
• refractivity
• Prediction procedures• interference and coordination
• Earth-satellite paths
• short-range communications (personal, LANs)
• terrestrial broadcasting and mobile services
Scope of Study Group 4(Fixed-satellite service)
Systems and networks for the FSS and inter-satellite links (in the FSS), including associated tracking, telemetry and telecommand functions
SG 4- some key areas of study -
• Sharing between non-GSO FSS systems and other FSS networks• mitigation techniques for sharing between
• non-GSO/FSS systems and other networks using the GSO
• non-GSO FSS systems
• IP over satellite• WRC-03 issues
• e.g. protection of MSS feeder links at 5 GHz
Scope of Study Group 6(Broadcasting service)
Radiocommunication broadcasting (terrestrial and satellite) of vision, sound, multimedia and data services primarily intended for delivery to the general public
SG 6- some key areas of study -
• Digital sound broadcasting below 30 MHz• system specification (Rec. BS.1514-1)
• planning parameters (DNR)
• Studies relating to revised b’cast satellite plans (Appendices 30 and 30A)• sharing criteria between BSS, FSS and terrestrial
services
• Guidelines for system options for digital terrestrial TV b’casting
SG 6- some key areas of study (continued) -
• Coverage prediction methods and evaluation of DTTB systems
• Protection of b’cast systems against radiation by wired systems, ISM equipment and short-range devices
Scope of Study Group 7(Science services)
• Systems for space operation, space research, Earth exploration and meteorology
• Radio astronomy
• Standard frequency and time signals
SG 7- some key areas of study -
• Allocations for space science services• space operations and space research services
• precipitation radars (~ 35 GHz)
• Earth exploration satellite service (420-470 MHz)
• Radio astronomy• protection criteria
Scope of Study Group 8(Mobile services)
Systems and networks for the mobile, radiodetermination and amateur services, including related satellite services
SG 8- some key areas of study -
• IMT-2000• update radio interface specs.• global spectrum harmonization• systems beyond IMT-2000
• PPDR (Public Protection and Disaster Relief)• identification of spectrum• Draft New Report on objectives and
requirements for PPDR
SG 8- some key areas of study (continued) -
• ITS (Intelligent Transportation Systems)• standards for Vehicle Information and
Communication Systems (VICS)
• evolution of Dedicated Short Range Communication (DSRC) systems
• RLANs (Nomadic Wireless Access)• broadband NWA (frequency spectrum and
standards harmonization)
Scope of Study Group 9(Fixed service)
Systems and networks of the fixed service operating via terrestrial stations
SG 9- some key areas of study -
• High altitude platform stations (HAPS)• additional allocations in range 18-32 GHz• technical and operational characteristics• impact on other services• interference mitigation techniques
• Frequency bands for High Density systems in FSS• above about 19 GHz
• Handbooks• Frequency adaptive systems at MF/HF• Fixed Wireless Access
Joint Studies
• Joint Task Group (JTG) 4-7-8-95 GHz band allocations• WRC-03 AI 1.5• Resolution 736 (WRC-2000)
• JTG 4-7-8Sharing in band 13.75-14 GHz• WRC-03 AI 1.24• Resolution 733 (WRC-2000)
Study Group Products
• Technical bases for WRC• CPM Report
• Draft ITU-R Recommendations
• Handbooks
CPM Report to WRC-03
1. Radionavigation, radnav-sat and radiolocation services
2. Mobile, mob-satellite and space science services3. Fixed-satellite and broadcast-sat services4. Fixed and fixed-sat services and HAPS5. Maritime-mobile, amateur and am-sat, and
b’cast services at MF and HF6. Other matters7. Future work programme
ITU-R Recommendations
• > 900 Recommendations in 16 series• “Standards” in areas of spectrum
management and radio technology• Result of consensus from meetings of
world-wide experts• Some referred to in RR• Used by spectrum planners and system
designers
ITU-R Handbooks
• Over 30 published
• Tutorial in nature
• Emphasis on use by developing countries
• Liaison with ITU-D (and ITU-T)
• Continuing Handbook programme in ITU-R
Concluding remarks
• The Study Groups represent a major aspect of ITU-R activities
• Technical forum for discussion amongst experts
• Technical bases for Radio Conferences
• Recommendations and Handbooks