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 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 1.4	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 1.6	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 1.12	This agenda item relates to Plenipot Resolution 86 on "Coordination and notification procedures for satellite networks". It calls upon WRC 2007 to consider proposals to improve the regulatory procedures relating to the introduction of space services in a way that facilitates the rational, efficient, and economic use of radio frequencies and associated orbits including the GSO.
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)
Agenda 1.19	This agenda item relates to spectrum for broadband services via satellite. A number of bands have been identified in 5.BC03 for use by high density fixed satellite service (HDFSS) applications, and it would be beneficial if there were globally harmonised spectrum. Work is therefore required to: i) identify the requirement for spectrum for these types of systems; ii) identify the preferred global harmonised bands, potentially including sharing studies with other services allocated in these bands
Agenda 1.20	This agenda item refers to compatibility between the EESS (passive) service and active services with allocations in adjacent or nearby bands. ITU-R Recommendation SM 1633 undertook a band by band survey of compatibility between passive and active services in adjacent bands. However this Recommendation did not cover all service + band pairs, and so further work is required: i) The Resolution identifies 7 band and service combinations for further study, involving frequencies between 1 400 MHz and 50.4 GHz, and the fixed, mobile, fixed satellite, and radiolocation services. ii) In addition work is required to consider the impact of implementing the values in Rec. 1633 on the fixed service (excluding HAPS) in Regions 2 and 3 in bands around 30 GHz and 50 GHz.
Agenda 1.21	This agenda item refers to compatibility between the radio astronomy service and active space services (such as FSS, BSS, MSS and RNSS) in frequency bands from 150.05 MHz to 22.5 GHz. Resolution 739 [COM 4/15] refers to procedures that could be used during the design of an active space service system or after lauch by which the RAS can enter into consultations with satellite operators to facilitate a mutually acceptable solution to any problem identified. It also notes that studies for some active space services at some bands are incomplete, and therefore that this work should be undertaken to update the table of thresholds in Table 1-1 of Resolution 739 [COM 4/15]. In addition Resolution 740 [COM 4/17] identifies an additional series of bands and services for which further study is required, which could result in updates to existing Recommendations (e.g. SM 1633) or development of new Recommendations, and/or an update to Table 1-1 of Resolution 739 [COM 4/15].
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 525	This resolution relates to the introduction of broadcast satellite service (sound) systems and complementary terrestrial broadcasting in bands between 1 and 3 GHz. It calls upon studies of the calculation method and interference criteria for sharing between satellite and terrestrial broadcasting stations, and with other effected services.
Resolution 901 [COM4/19]	This resolution relates to the extension of the coordination arc concept applied in certain bands to those not yet covered. Table 5-1 in Appendix 5 identifies the methods by which it is determined coordination is required, and for some bands it is based upon DT/T and others the difference in longitude of GSO satellites, described as the coordination arc. This resolution calls for further study as to the applicability of the coordination arc to other bands and services not covered by the existing regulations.
Resolution 646 [COM5/4]	This resolution relates to protection and disaster relief. It notes many of the factors relating to the requirements and issues relating to provision of such safety of life services. It calls for studies into: i) technical and operational implementation of advanced solutions to the needs of protection and disaster relief; ii) further technical studies in support of possible additional identification of other frequency bands to meet the needs of certain countries in Region 1.
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 950 [COM7/1]	This resolution relates to bands from 275 to 3,000 GHz, which is currently not covered by the table of allocations. Article 5.565 makes provision for use of these bands by passive services such as radio astronomy, EESS (passive) and space research (passive). There is therefore a need to study potential usage of these bands and possible sharing issues.
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.