ITU DOCUMENTS

CIRM is a sector member of ITU-R and an active participant in Study Group 5 and its Working Party 5B (WP5B)

Documents for Study Group 5 including the Questions are available on the ITU website. The Questions are available to all, however working documents and input papers for working parties are only available to members of the TIES service. The CIRM secretariat will provide members with any papers they might require, however Recommendations and other ITU publications must be bought from ITU publications. Please ask the secretariat.

Members who wish to take an active role at the ITU Study Group meetings in Geneva should co-ordinate their position with the Secretariat who can deal with Registration etc. If, as a CIRM member you activly participate in the work then we can arrange TIES access.

ITU R Study Groups

ITU-R Study Groups are established and assigned study Questions by a Radiocommunication Assembly (RA) to prepare draft Recommendations for approval by ITU Member States. Studies focus on the following:

• efficient management and use of the spectrum/orbit resource by space and
• terrestrial services;
• characteristics and performance of radio systems;
• operation of radio stations;
• radiocommunication aspects of distress and safety matters.

Furthermore, ITU-R Study Groups carry out preparatory studies for World and Regional Radiocommunication Conferences (WRCs, RRCs). On the basis of the input material from the Study Groups and the Special Committee on regulatory/procedural matters, alongside any new material submitted by ITU Member States, the Conference Preparatory Meeting (CPM) prepares a Report on the technical, operational and regulatory or procedural matters to be considered by a given Conference.

ITU-R Working Party 5B – Maritime mobile service including the Global Maritime Distress and Safety System (GMDSS); the aeronautical mobile service and the radiodetermination service.

WP 5B is responsible for studies related to the maritime mobile service, including the Global Maritime Distress and Safety System (GMDSS), the aeronautical mobile service and the radiodetermination service, including both radiolocation and radionavigation services. It studies communication systems for the maritime mobile and aeronautical mobile services and radar and radiolocation systems for the radiodetermination service.

WP 5B is the lead group for developing and maintaining ITU-R Recommendations, Reports and Handbooks that enable effective operation and protection for different applications, including distress and safety applications of the above services, while permitting sharing of the limited spectrum resources with other services operating within the allocated bands.

The maritime mobile service, by the very nature of its remote operations, is critically dependent on radio spectrum for the conduct of its business activities, as well as providing a vital link to search and rescue authorities and ships and aircraft during distress incidents and other potentially dangerous conditions. In close cooperation with the International Maritime Organization (IMO), WP 5B also develops drafts of operational procedures for urgency, distress and safety communications and operation of systems belonging to the maritime mobile service, including the management of Maritime Mobile Service Identities (MMSSI).

Different aspects related to the development and operation of applications belonging to the radiodetermination service (including radiolocation and radionavigation) are also part of the WP 5B agenda. Systems belonging to the radiodetermination service are being employed not only by the aeronautical, maritime and meteorological industries but to an ever-increasing degree by other industries as well as the general public. While these systems operate within the current frequency allocations, proposals for sharing with new systems that require significant new spectrum allocations are being made in preparation for future World Radiocommunication Conferences.

This requires the development of specific Recommendations addressing the characteristics of all known radar systems, potential enhancements made possible by the introduction of new technology and standardized measurement and mitigation techniques for each proposed new sharing scenario.

Working Party 5B maintains strong cooperation with the International Civil Aviation Organization (ICAO), the International Maritime Organization (IMO) and the World Meteorological Organization (WMO).