WRC 2007 Agenda Items for WP 8B

Maritime mobile service including Global Maritime Distress and Safety System (GMDSS); aeronautical mobile service and radiodetermination service

The list below shows all the WRC 2007 Agenda Items for which this group is involved. Click on an Agenda Item or Resolution to get more information about which Visualyse product could be useful, and how Transfinite consultants can assist in studying this problem.

Agenda Item	Description
Agenda 1.3	This agenda item refers to bands between 9 and 10 GHz, where requirements have been identified for more spectrum to be available for: i) radiolocation, by raising its status in the 9 200 - 9300 MHz from secondary to primary, to be used in conjunction with existing primary allocations which include the 9 000 - 9 200 MHz and 9 300 - 9 800 MHz bands; ii) EESS, by allocating up to 200 MHz of additional spectrum around a current allocation at 9 500 - 9 800 MHz
Agenda 1.4	This wide ranging Agenda Item relates to the further development of IMT-2000 and systems beyond IMT-2000, in particular: i) studies of the requirements for spectrum and potential frequency ranges ii) consideration of spectrum at frequencies below those identified in 5.317A (806 - 960 MHz) iii) that the studies in i) above should take account of benefit to developing countries of the satellite component of IMT-2000; iv) that sharing and compatibility studies should be performed where necessary when considering additional frequency bands for IMT-2000
Agenda 1.5	This agenda item covers consideration of mobile allocations to be used for wideband aeronautical telemetry and associated telecomand, based upon: i) study of the spectrum requirements for such systems; ii) study of possible upgrading of suitable secondary mobile allocations in the range 3 - 16 GHz to primary, undertaking sharing studies where required; iii) consideration of additional allocations in the range 3 - 16 GHz to the mobile service for such services, undertaking sharing studies where required;
Agenda 1.6	This agenda item relates to aeronautical mobile (R) services in bands between 108 MHz and 6 GHz. It notes there are new requirements to support air navigation, and so the following work is required: i) to identify if existing allocations to aeronautical services are sufficient for these new applications; ii) if additional spectrum is required, to identify what might be suitable bands, taking into account the need to not constrain existing and planned use of such bands, and so undertaking sharing studies where required; iii) in particular, how to accommodate the requirements for aeronautical systems in the band 5 091 - 5 150 MHz iv) to consider what actions would be required to broaden current satellite frequency allocations to support the expansion of the ICAO CNS/ATM system
Agenda 1.13	This agenda item covers issues relating to all services in HF bands between 4 MHz and 10 MHz, excluding those in the band 7 000 - 7 200 kHz and those covered by Appendices 25, 26, and 27. Technological change has made bands allocated for A1A Morse telegraphy and narrow band direct printing under utilised, while there is a demand for new digital technology and more spectrum for broadcast applications. Studies are therefore required to: i) continue to study under Resolution 729 the use of frequency adaptive systems in the MF and HF bands; ii) identify the characteristics of digital system(s) to be used in the MF/HF bands by the maritime mobile service, taking into account MMS requirements and impact on Appendix 17; iii) study the potential to allocate further bands to the broadcast service, taking into account other services using these bands
Agenda 1.14	This agenda item relates to the continued transition to the Global Maritime Distress and Safety System (GMDSS). It covers: i) review of progress towards implementing GMDSS, in particular the continued use of VHF channel 16 and the frequency 2 182 kHz as voice calling channels, taking into account of factors such as decisions by IMO, availability of GMDSS equipped ships, density and classes of ships etc; ii) study into suitable future technology(s) to replace, where considered appropriate, voice calling methods.
Agenda 1.15	This agenda item relates to studies into the possibility of a secondary allocation to the amateur service in the frequency band 135.7 - 137.8 kHz. This band is currently allocated to the maritime mobile, fixed services, and (in Region 3 and certain other countries), Radionavigation.
Agenda 1.16	This agenda item relates to the identification numbers issued to ships and other maritime related stations (eg coastal stations) called Maritime Mobile Service Identities (MMSIs). It covers the: i) review the Recommendations for assigning MMSIs, and identifying alternative resources if there is a rapid exhaustion of free MMSIs ii) study of the implications and any necessary changes involved in assigning MMSIs to SAR aircraft
Agenda 1.17	This agenda item relates to the 1 390 - 1 392 MHz (E-s) and 1 430 - 1 432 MHz (s-E) additional allocations made during WRC 2003 to the fixed satellite service operating feeder links for non-GSO MSS systems where the service links are under 1 GHz. However the CPM Report indicated that studies of compatibility with other services allocated in this band were not complete, indeed there were suggestion that sharing with EESS (passive) in particular, could be problematic. Services in these bands includes the fixed, mobile, radiolocation, EESS (passive), radio astronomy, space research (passive) and aeronautical mobile. These allocations are therefore not be used until studies are completed on: i) sharing studies on operational and technical means to facilitate sharing in the uplink direction in the band identified and others around 1.4 GHz; ii) sharing studies on operational and technical means to facilitate sharing in the downlink direction in the band identified and others around 1.4 GHz; iii) validate that the unwanted emissions from the FSS feeder links would meet the protection requirements of the passive services iv) to study the PFD levels required to protect the EESS (passive)
Resolution 114	This resolution relates to the band 5 091 - 5 150 MHz, and is the subject of an agenda item for WRC-10. It calls for studies of technical and operational issues relating to sharing in this band between new systems of the aeronautical radionavigation service and the fixed satellite service providing feeder links for non-GSO MSS.
Resolution 225	This resolution relates to use of certain frequency bands between 1 525 MHz and 2 690 MHz allocated to the MSS for use by the satellite component of IMT-2000. It calls for sharing studies relating to use of these bands for satellite IMT-2000 and use of the spectrum by other services, such as terrestrial IMT-2000 (in particular around 2 500 - 2 690 MHz) and the radiodetermination-satellite service.
Resolution 413 [COM5/2]	This resolution relates to the use of the band 108 - 117.975 MHz by aeronautical services, where new applications are being considered. In addition new digital sound broadcasting systems are planned to be introduced in the band 87 - 108 MHz. However no compatibility criteria exist between these two services. Therefore there is the need for further study of any compatibility issues relating to these services and frequency bands.
Resolution 609 [COM5/8]	This resolution refers to the protection of aeronautical radionavigation service from radionavigation satellite service networks in the band 1 164 - 1 215 MHz using the equivalent power flux density (EPFD) measure of interference. It identifies an EPFD limit of -121.5 dB(W/m^2) in any 1 MHz never to be exceeded for 100% of time. It calls for software that can be used to calculate this EPFD to allow RNSS systems to be check for compliance by the BR.
Resolution 144 [COM5/15]	This resolution refers to the issue of sharing between earth stations of the fixed satellite service (Earth to space) and radiolocation stations in the band 13.75 to 14 GHz. At WRC-03 the dish size limit was reduced from 4.5m to 1.2, but a PFD at country border or coastline has been introduced of -115 dB(W/m^2) in 10 MHz not to be exceeded for more than 1% of time. Further work is required to develop ITU-R Recommendations that will establish technical or operation methods to facilitate sharing - for example allowing more flexible deployment of earth stations and that could be used during bilateral discussions between administrations.
Resolution 951 [COM7/2]	This resolution is related to the issue of terrestrial wireless interactive multimedia (TWIM) systems, that could operate across traditional service boundaries, using a range of emerging technologies. It calls for studies to examine the effectiveness, appropriateness, and impact of the Radio Regulations with respect to these new systems. The results of these studies are to be included in the Director of the BR's Report to WRC-07 to allow consideration of this subject on a future conference agenda. See also WRC-03 Recommendation 722 [COM7/2]
Resolution 952 [COM7/3]	This resolution relates to the issue of Ultra Wide-band (UWB) systems, that have a very large bandwidth and so could operate across many frequency bands, potentially impacting a large number of receivers. These systems are not considered as Industrial, Scientific, and Medical (SIM) applications. There is therefore a need to continue studies about the issues raised by these systems, including sharing studies and regulatory procedures.