WRC 2007 Agenda Items for WP 8D

All mobile satellite services and radiodetermination satellite service

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

Agenda Item	Description
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 1.7	This agenda item relates issues relating to the allocation of 7 MHz to the MSS (Earth to space) between 1 668 MHz and 1 675 MHz. Outside the US (where MSS operation is unlikely to be feasible), there is a need to study: i) studies relating to sharing with space research (passive) space stations in the 1 668 - 1 668.4 MHz band, and ii) studies relating to sharing with the mobile service, in the band 1 668.4 MHz to 1 675 MHz In these bands there are also allocations for the fixed, meteorological, met aids, and radio astronomy services
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 25	This resolution relates to the Global Mobile Personal Communications by Satellite (GMPCS) Memorandum of Understanding (MoU). It requests administrations to continue to support the implementation of this MoU, and to participate in any ITU-R studies required in the development and revision of relevant Recommendations.
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 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.