*Pages 1--56 from Microsoft Word - 18732.doc* PUBLIC NOTICE Federal Communications Commission 445 12 th St., S. W. Washington, D. C. 20554 News Media Information 202 / 418- 0500 Fax- On- Demand 202 / 418- 2830 TTY 202 / 418- 2555 Internet: http:// www. fcc. gov ftp. fcc. gov DA 02- 1415 June 17, 2002 THE FCC'S ADVISORY COMMITTEE FOR THE 2003 WORLD RADIOCOMMUNICATION CONFERENCE APPROVES DRAFT PROPOSALS On June 4, 2002, the World Radiocommunication Conference Advisory Committee (WRC- 03 Advisory Committee) adopted recommendations to the Commission on numerous issues that the 2003 World Radiocommunication Conference (WRC- 03) will address. The WRC- 03 Advisory Committee was established by the Commission in January 2001 to assist it in the development of proposals for WRC- 03. To that end, the WRC- 03 Advisory Committee has forwarded the recommendations it has developed since the beginning of 2001 to the Commission for consideration. We have attached to this Public Notice the WRC- 03 Advisory Committee’s recommendations, which are in the form of recommended draft proposals to the WRC- 03. We appreciate the substantial amount of work that the WRC- 03 Advisory Committee has put into developing its recommendations. This Public Notice requests comments on all of these recommendations. Based upon our initial review of the recommendations forwarded to the Commission, the International Bureau, in coordination with other Commission Bureaus and Offices, tentatively concludes that we can generally support all of the proposals recommended by the WRC- 03 Advisory Committee. We do, however, have some reservations about the proposals reflected in documents WAC/ 113 and WAC/ 115. We also take note of the concerns expressed by some WRC- 03 Advisory Committee participants on the proposals in document WAC/ 115. We seek comment on the recommendations that appear in all of the WRC- 03 Advisory Committee documents and on our tentative conclusions. In addition, the National Telecommunications and Information Administration (NTIA) has submitted letters to the Commission containing draft proposals that have been developed by the Executive Branch Agencies. We also request comment on these draft proposals, which are attached hereto as well. The FCC will consider the draft proposals and comments provided in its upcoming consultations with the U. S. Department of State and NTIA in the development of U. S. proposals to WRC- 03. Once agreed by these agencies of the U. S. Government, proposals will be used by U. S. delegations at bilateral, regional and international meetings. The draft proposals attached to this Public Notice may evolve as we approach WRC- 03 and during the course of interagency discussions. Therefore, they do not constitute the final national position on these issues. The complete texts of these draft proposals are also available in the FCC's Information Reference Center, Room CY- A257, 445 12th Street, SW, Washington, DC 20554 and by accessing the FCC's WRC- 03 world wide web site at http:// www. fcc. gov/ wrc- 03. To comment on the proposals, please submit an original and one copy of your comments to the Office of the Secretary, Federal Communications Commission, 445 12th Street, SW, Washington, DC 20554 and provide a courtesy copy to Alex Roytblat, FCC WRC- 03 Director, Room 6- B505. Comments should refer to specific proposals by document number. The deadline for comments on the draft proposals and NTIA letters is July 12, 2002. 1 2 I. Informal Working Group 2: Mobile- Satellite Service including GPS DRAFT PROPOSAL FOR THE WORK OF THE CONFERENCE Doc. WAC/ 109( 04.06.02) (Joint IWG- 2/ IWG- 3 Draft Proposal) WRC- 03 Agenda Item 1.8.2: to consider issues related to unwanted emissions: consideration of the results of studies, and proposal of any regulatory measure regarding the protection of passive services from unwanted emissions, in particular from space service transmissions, in response to Recommends 5 and 6 of Recommendation 66 (Rev. WRC- 2000); Background Information Recommends 5 and 6 of Recommendation 66 (Rev. WRC- 2000) state: “5. study those frequency bands and instances where for technical or operational reasons, more stringent spurious emission limits than the general limits in Appendix 3 may be required to protect safety services and passive services such as radio astronomy, and the impact on all concerned services of implementing or not implementing such limits; 6. study those frequency bands and instances where for technical or operational reasons, out- of- band limits may be required to protect safety services and passive services such as radio astronomy, and the impact on all concerned services of implementing or not implementing such services.” The lead responsibility for carrying out the referenced studies was Task Group 1/ 7. It developed a methodology for analyzing compatibility between a passive service and an active service allocated in different bands and providing guidance on possible solutions. These are reflected in Draft New Recommendation ITU- R SM.[ BbB]. This DNR identifies passive service bands where it could be technically and/ or economically difficult for active services to meet the passive protection criteria. In such cases, specific band- by- band studies have been carried out and are documented in this DNR. The actual impact on all concerned services of implementing or not implementing such limits are taken into account. The studies were conducted in over 20 band pairs where compatibility concerns had been raised. The methodology and rationale for these studies are given in Recommendation ITU- R SM.[ BbB]. In a certain number of these band pairs, incompatibilities between existing or planned active and passive systems were identified under the given operational conditions. Other band pairs 2 3 were found to be compatible under conditions specific to each band pair. Within the bands considered, not all studies have been completed. The CPM text reflects three methods for solving this agenda item. The first has three variations and envisions inclusion of limits in the Radio Regulations. The second is a consultative process between concerned administrations. The third includes no modification of the Radio Regulations. The DNR indicated above is a comprehensive evaluation of the problem areas associated with this agenda item. All but one of these methods involves incorporation of some or all unwanted emission limits identified in the DNR into the Radio Regulations, or modification of the Radio Regulations to provide for the consultative process. Up to now, the only Radio Regulations which generally deal with unwanted emissions are Appendix 3, and No. 4.6. Inclusion of explicit unwanted emission provisions directly in the radio regulations would place a burden on administrations to confirm that satellites are compliant with these regulations. There would be additional cost, project delays, and further burden on manufacturers. Putting mandatory measures in the Radio Regulations is less responsive to technical advances and mitigation methods, and could preclude effective consultation between active and passive services. Also, the results of the band- by- band study would be ignored and effective co-existence between the services would suffer. Proposals: USA/ 1.8.2/ l NOC Reason: The United States endorses Method 3 of the CPM text. This method would not require a change to any part of the Radio Regulations, e. g. Articles 5, 21, 29 and Appendix 3, and would rely on the application of ITU- R Recommendations, such as RA. 769, SA. 1029, SM[ BbB]. These provide guidance to Administrations who wish to use them as to how to protect the passive services. Under this method, administrations have full flexibility to implement which ITU- R Recommendations they consider appropriate. Revision of such Recommendations in order to adapt to changing technology can be achieved more easily than mandatory limits. Such mandatory limits could only be changed at WRCs, and consequently would probably be continuously on the agenda. 3 4 USA/ 1.8.2/ 2 SUP Recommendation 66 (Rev/ WRC- 2000) Studies of the Maximum Permitted Levels of Unwanted Emissions. Reason: The studies called for by this Recommendation have been essentially completed. Any additional needs of the passive services can be dealt with through modification of appropriate Recommendations. There is no reason to keep this topic on future agendas. 4 5 MODIFICATIONS TO DRAFT PROPOSAL FOR THE WORK OF THE CONFERENCE Doc. WAC/ 110( 04.06.02) Proposal for Resolution 605 WRC- 03 Agenda Item 1.15a: to review the results of studies concerning the radionavigation- satellite service in accordance with Resolutions 604 (WRC- 2000), 605 (WRC- 2000) and 606 (WRC- 2000); Background Information: WRC- 2000 introduced new allocations in the band 1 164- 1 215 MHz for use by the radionavigation- satellite service (RNSS) (space- to- space) and (space- to- Earth) with a provisional aggregate power- flux- density (pfd) limit of -115 dB (W/ m 2 ) in any 1 MHz band produced at the Earth’s surface by all space stations within all RNSS systems and for all angles of arrival. It also stated in 5.328A of the Radio Regulations that the provisions of Resolution 605 (WRC- 2000) apply. There was extensive discussion at WRC- 2000 with regard to the need for a pfd limit and the value needed to protect aeronautical radionavigation service (ARNS) systems (including Distance Measuring Equipment (DME)). Resolution 605 (WRC- 2000) requested the ITU- R to study the technical, operational, and regulatory aspects of compatibility between RNSS and ARNS in the band 9 60- 1 215 MHz, including an assessment of the need for an aggregate pfd limit. If such a need exists, the ITU- R was requested to revise, if necessary the provisional pfd limit given in 5.328A concerning the operation of RNSS systems in the frequency band 1 164 – 1 215 MHz. The ITU- R has determined that ARNS systems require protection from the aggregate of emissions from RNSS systems and networks that collectively exceed –116.8 dB (W/ m 2 ) in any 1 MHz produced at the Earth’s surface. There is, however, no reliable way for the Radiocommunication Bureau (BR) to validate compliance by all RNSS systems with an aggregate pfd limit. Studies within the ITU- R reveal that there are a number of profound technical and regulatory reasons why establishment of the regulatory device of a permanent aggregate pfd limit on RNSS emissions in the 1 164- 1 215 MHz band would fail to provide the protection to ARNS systems that is required and intended under No. 5.328A of the Radio Regulations. It would significantly and unduly constrain the development and implementation of RNSS systems in this band. Addressing Resolution 605 (WRC- 2000), the United States has a strong need for both use of the RNSS spectrum and the continued operation of ARNS systems in the 1 164- 1 215 MHz band. Furthermore, the U. S. is committed to protecting current and future ARNS systems operating in the same band as RNSS from harmful interference. This protection needs to be provided without unnecessarily delaying or hindering the implementation and provision of RNSS (space- to- Earth). Based on its studies, the ITU has identified a single regulatory approach for achieving the meaningful protection of the ARNS without unduly constraining RNSS development and operation. This approach mandates the provision of aggregate interference protection at the level identified in ITU- R studies, but commits enforcement of the requirement to those administrations that actually operate and actually intend to operate RNSS systems. The approach manages the total amount of interference caused by these systems through the collaborative agreement on the part of administrations proposing and operating the RNSS systems. In this manner, there is no additional regulatory burden for the BR (which will not be tasked to validate compliance with the protection criterion); there will be a need for coordination among RNSS operators (both formal in an Article 9 sense and informal thereafter pursuant to the provisions of the proposed new resolution and associated provisions in the Radio Regulations); and neither ARNS systems nor RNSS operators are faced with artificial or insufficient 5 6 regulations that could leave them exposed to interference or forced to make unnecessary adjustments that inhibit the efficient use of the orbital/ spectrum resource. The approach also takes account of the Radio Regulations Board (RRB) concern about having multiple inconsistent regulations applicable to the same band. Proposal: USA/ /1 (MOD) 960- 1 215 MHz Reasons: Consequential change. USA/ /2 NOC 5.328 Reasons: The current text is adequate. USA/ /3 MOD 5.328A Additional allocation: the band 1 164- 1 215 MHz is also allocated to the radionavigation-satellite service (space- to- Earth) (space- to- space) on a primary basis. The aggregate power flux- density produced by all the space stations of all radionavigation- satellite systems at the Earth’s surface shall not exceed the provisional value of –115 dB( W/ m 2 ) in any 1 MHz band for all angles of arrival. Stations in the radionavigation- satellite service in the band 1 164- 1 215 MHz shall not cause harmful interference to, nor claim protection from, stations of the aeronautical- radionavigation serviceoperate in accordance with the provisions of Resolution RNSS (WRC- 03) 605 (WRC- 2000) and shall not claim protection from stations in the aeronautical- radionavigation service. No. 5.43A does not apply. Use of the band 1 164- 1 215 MHz by the radionavigation- satellite service is subject to the application of the provisions of Nos. 9.12, 9.12A, and 9.13. The provisions of No. 21.18 apply. Reasons: The suppression of the second and modification of the third sentence reflect the incorporation into new Resolution RNSS (WRC- 03) and associated Radio Regulations (see below) of the mechanisms for ensuring the protection of ARNS against harmful interference from RNSS (space-to- Earth) systems. Allocation to services Region 1 Region 2 Region 3 960- 1 215 AERONAUTICAL RADIONAVIGATION 5.328 MOD 5.328A 6 7 By making non- geostationary (non- GSO) RNSS systems subject to Article 9 coordination obligations with respect to each other and with geostationary (GSO) RNSS systems (Nos. 9.12 and 9.12A), and by making GSO RNSS systems coordinate with non- GSO RNSS systems under No. 9.13, the Radio Regulations will provide an early start on discussions between administrations operating or planning to operate RNSS systems. This will help ensure that the objective of assuring compliance with the aggregate protection criterion for ARNS in new Resolution RNSS (WRC- 03) (see below) is met. GSO RNSS systems are already obliged to coordinate with each other under No. 9.7. Discussions between RNSS administrations, both during formal coordination and after, are critical to the success of the regulatory determination to commit to administrations the obligation to ensure that the aggregate protection criterion of the ARNS is satisfied. Thus, the new provision in new No. S21.18 (see below) is specifically referenced. USA/ /4 ADD Section VI – Protection of aeronautical radionavigation service systems from aggregate emissions of space stations of radionavigation- satellite service systems in the 1 164- 1 215 MHz band 21.18 § 7 Administrations operating or planning to operate radionavigation- satellite service systems or networks in the 1 164- 1 215 MHz frequency band, for which complete coordination or notification information, as appropriate, was received by the Bureau after 2 June 2000, shall, in accordance with resolves 2 of Resolution RNSS (WRC- 03), take all necessary steps to ensure that the actual aggregate interference into aeronautical radionavigation service systems caused by such RNSS systems or networks operating co- frequency in these frequency bands does not exceed the aggregate power level shown in resolves 1 Resolution RNSS (WRC- 03). Reasons: Article 21 of the Radio Regulations addresses sharing between terrestrial and space services in frequency bands above 1 GHz. Placement of this provision in a new Section VI of Article 21 brings into the Radio Regulations the critical elements from new Resolution RNSS (WRC- 03) (see proposal below) that make mandatory the collective obligation of administrations operating RNSS systems at 1 164- 1 215 MHz to ensure that the aggregate protection criterion from resolves 1 of Resolution RNSS is not exceeded, as well as the requirement to reduce emissions if administrations operating ARNS systems identify excess emission levels. 7 8 USA/ /5 ADD RESOLUTION RNSS (WRC- 2003) Protection of aeronautical radionavigation service systems from the aggregate power flux- density produced by radionavigation- satellite service networks and systems in the 1 164- 1 215 MHz frequency band The World Radiocommunication Conference (Caracas, 2003), considering a) that the band 960- 1 215 MHz is allocated on a primary basis to the aeronautical radionavigation service (ARNS) in all Regions; b) that the band 1 164- 1 215 MHz is also allocated on a primary basis to the radionavigation-satellite service (RNSS), subject to the condition in No. 5.328A that operation of RNSS systems shall be in accordance with this Resolution; c) that protection of the ARNS from harmful interference can be achieved if the value of the equivalent power flux- density (epfd) produced by all the space stations of all RNSS (space- to- Earth) systems in the band referred to in considering a) does not exceed the level of –121.5dB( W/ m 2 ) in any 1 MHz band; d) that WRC- 2000 adopted Resolution 605 (WRC- 2000) to provide for implementation of a provisional aggregate power flux- density limit during the period between WRC- 2000 and WRC- 2003, and requested ITU- R studies on the need for an aggregate pfd limit, and revision, if necessary, of the provisional pfd limit given in No. 5.328A; e) that only a limited number of RNSS systems are expected to be deployed in the 1 164- 1 215 MHz band, and only a few of these systems at most would have overlapping frequencies; f) that ARNS systems can be protected without placing undue constraints on the development and operation of RNSS systems in this band; g) that to achieve the objectives in considering f), administrations operating RNSS systems will need to agree cooperatively to achieve the level of protection for ARNS systems that is stated in considering c); h) that it may be appropriate for representatives of administrations operating ARNS systems to be involved in determinations made pursuant to considering g); resolves 1 that, in order to protect ARNS systems, administrations shall ensure, without validation by the Radiocommunication Bureau pursuant either to No. S11.31 or S9.35 of the Radio Regulations, that the equivalent pfd level produced by all space stations of all RNSS systems does not exceed the level, – 121.5 dB( W/ m 2 ) in any 1 MHz band; 8 9 2 that administrations operating or planning to operate in the 1 164- 1 215 MHz frequency band RNSS systems or networks for which complete coordination or notification information, as appropriate, was received by Radiocommunication Bureau after 2 June 2000, in collaboration, shall take all necessary steps, including by means of appropriate modifications to their systems or networks, to ensure that the aggregate interference into ARNS systems caused by such RNSS systems or networks operating co- frequency in these frequency bands does not exceed the level of the aggregate protection criterion given in resolves 1 above; 3 that administrations, in carrying out their obligations under resolves 1 and 2 above, shall take into account only those RNSS systems with frequency assignments in the band 1 164- 1 215 MHz that have met all of the milestones listed in the Annex to this Resolution; 4 that no single RNSS system shall be permitted to use up the entire interference allowance specified in resolves 1 above in any 1 MHz of the 1164- 1215 MHz band; 5 that administrations shall communicate to the Bureau the results of any aggregate sharing determinations made in application of resolves 2 above, without regard to whether such determinations result in any modifications to the published characteristics of their respective systems or networks; 6 that administrations operating ARNS systems in the 1 164- 1 215 MHz band should participate, as appropriate, in discussions and determinations relating to the resolves above, invites the ITU- R to continue to develop, as a matter of urgency a suitable methodology for calculating the epfd produced by all RNSS systems operating or planning to operate co- frequency in the 1 164- 1 215 MHz frequency band into ARNS systems, which may be used by administrations to determine whether the systems are in compliance with the epfd levels given in resolves 1 above. ANNEX Milestone Criteria for Application of Resolution RNSS 1. Submission of appropriate ITU Advance Publication, and Coordination or Notification documentation. 2. Entry into satellite manufacturing or procurement agreement: The RNSS system or network operator should possess clear evidence of a binding agreement for the manufacture or procurement of its satellites. The agreement should identify the contract milestones leading to the completion of manufacture or procurement of satellites required for the service provision. The Notifying Administration is responsible for authenticating the evidence of agreement and providing such evidence to other interested administrations in furtherance of its obligations under this Resolution. 3. Entry into satellite launch agreement: The RNSS system or network operator should possess clear evidence of a binding agreement to launch its satellites. The agreement should identify the launch date, launch site, and launch service provider. The Notifying Administration is responsible for 9 10 authenticating the evidence of agreement and providing such evidence to other interested administrations in furtherance of its obligations under this Resolution. Reasons: This resolution and annex, along with incorporating provisions in Articles 5 (MOD 5.328A) and 21 (ADD Section VI), provides the mechanism by which administrations operating or planning to operate RNSS systems, all of which also operate co- frequency ARNS systems, will undertake the responsibility for ensuring the protection of ARNS systems. The resolution recognizes that there is a need for discussions between and among administrations operating RNSS systems to ensure compliance with the obligation to protect ARNS systems, and that such discussions may involve administrations operating ARNS systems. Resolution RNSS thus provides a basis for managing the total aggregate interference caused to ARNS systems by real RNSS systems. USA/ /6 SUP RESOLUTION 605 (WRC- 2000) Reasons: This resolution is no longer needed because of the changes made to 5.328A, the addition of Section VI to Article 21 and the addition of Resolution RNSS. 10 11 USA/ /7 MOD TABLE 5- 1 (continued) Reference of Article 9 Case Frequency bands (and Region) of the service for which coordination is sought Threshold/ condition Calculation method Remarks No. 9.7 GSO/ GSO (cont.) 3) 17. 7- 20. 2 GHz, and 27. 5- 30 GHz 4) 1 164 – 1 215 MHz 5) All frequency bands, other than those in § 1), 2) and 3), allocated to a space service, and the bands in § 1), 2) and 3) where the radio service of the proposed network or affected networks is other than the FSS, or in the case of coordination of space stations operating in the opposite direction of transmission i) Bandwidth overlap, and ii) any network in the FSS with a space station within an orbital arc of ± 8° of the nominal orbital position of a proposed network in the FSS Bandwidth overlap Value of  T/ T exceeds 6% Appendix 8 the network of this adminis- tration will not be affected because value of  T/ T calculated by the method in § 2.2.1.2 and 3. 2 of Appendix 8 do not exceed 6%. When the Bureau, at the request of an administration, studies this information pursuant to No. 9.42, the calculation method given in § 2.2.1.2 and 3. 2 of Appendix 8 shall be used Reasons: Consequential. 11 12 II. Informal Working Group 3: Fixed- Satellite Service/ Broadcasting Satellite Service DRAFT PROPOSAL FOR THE WORK OF THE CONFERENCE Doc. WAC/ 109( 04.06.02) (Joint IWG- 2/ IWG- 3 Draft Proposal) WRC- 03 Agenda Item 1.8.2: to consider issues related to unwanted emissions: consideration of the results of studies, and proposal of any regulatory measure regarding the protection of passive services from unwanted emissions, in particular from space service transmissions, in response to Recommends 5 and 6 of Recommendation 66 (Rev. WRC- 2000); [Presented in Section I as a joint IWG- 2/ IWG- 3 Draft Proposal] 12 13 MODIFICATION TO DRAFT PROPOSAL FOR THE WORK OF THE CONFERENCE Doc. WAC/ 111( 04.06.02) WRC- 03 Agenda Item 1.37: to consider the regulatory and technical provisions for satellite networks using highly elliptical orbits (HEOs); Background information The ITU- R has been considering the sharing aspects of HEO satellite systems (occasionally referred to as “quasi- geostationary” systems) in a number of contexts over the last several years. A subcategory of non- geostationary (non- GSO) systems, HEO systems are intended for operation or are already operational in several fixed- satellite service (FSS) bands above 3 GHz. In certain configurations, HEO systems potentially facilitate the introduction of large numbers of co- frequency non- GSO FSS systems and promote successful co- existence with GSO networks and terrestrial systems. To date, several categories of orbits that are encompassed within the term “highly- elliptical” have been identified within the ITU- R. All highly- elliptical orbits, however, are non- geostationary orbits, and all HEO systems are non- geostationary systems. In this regard, recent studies in certain frequency bands between 10 and 30 GHz resulted in a series of new regulations in Articles 21 and 22 that were adopted at the 1997 and 2000 WRCs, including pfd limits on non- GSO FSS systems to protect terrestrial systems and epfd limits on non- GSO FSS systems to protect GSO FSS and broadcasting- satellite service (BSS) networks. The pfd and epfd limits and associated provisions that were imposed on non- GSO FSS systems in the applicable segments of the 10- 30 GHz band apply to non- GSO FSS systems in highly- elliptical orbits. Five of the six following proposals under agenda item 1.37 are intended to avoid any potential confusion regarding the applicability of regulations in Articles 21 and 22 that were adopted at WRC- 2000 to all non-GSO systems, including those employing highly- elliptical orbits, and to confirm the ITU- R conclusion that no change is needed to Article 1 or Article 5 in order to accommodate the introduction of non- GSO systems using highly- elliptical orbits. The sixth proposal, for pfd limits at 3.7- 4.2 GHz for non- GSO satellites, results from the fact that studies of the pfd values that adequately protect the FS in the 3.7- 4.2 GHz band from satellites in highly- elliptical orbits are of sufficient maturity in the ITU- R to enable pfd limits to be established that would protect the FS from HEO emissions, as well as from other types of non- GSO FSS satellite emissions. Proposals: USA/ /1 NOC ARTICLE 1 Terms and definitions Reasons: Satellite networks using HEOs should continue to be considered as non- GSOs so there is no need to modify the terms and definitions in the Radio Regulations to accommodate HEO- type non- GSO operations. 13 14 USA/ /2 NOC ARTICLE 5 Frequency allocations Reasons: Satellite networks using HEOs should continue to be considered as non- GSOs and these networks should continue to be considered to have the same regulatory standing as other types of non- GSOs, such as MEOs and LEOs. USA/ /3 MOD TABLE 21- 4 (WRC- 2000) Reasons: The FS in the 3.7- 4.2 GHz band would be adequately protected by the adoption of limits on pfd produced by highly- elliptical orbit non- GSO satellites. As the levels would also adequately protect the FS from other types of non- GSO satellites, they are proposed for application to all non- GSO FSS satellites, in order to avoid having to introduce a definition of HEO satellites or otherwise subcategorize non- GSO satellites. The levels for non- GSO FSS satellites have been converted to a 4 kHz reference bandwidth from the levels of –126/– 136 dB( W/ m 2 ) in 1 MHz that are reflected in the CPM Report. Limit in dB( W/ m 2 ) for angle of arrival () above the horizontal plane Frequency band Service* 0°- 5° 5°- 25° 25°- 90° Reference bandwidth * * * 3 400- 4 200 MHz 4 500- 4 800 MHz 5 670- 5 725 MHz (Nos. 5.453 and 5.455) 7 250- 7 850 MHz Fixed- satellite (space- to- Earth, geostationary- satellite orbit) Meteorological- satellite (space- to- Earth) Mobile- satellite Space research –152 –152 + 0. 5(  – 5) –142 4 kHz 3 700- 4 200 MHz Fixed- satellite (space- to- Earth, non-geostationary- satellite orbit) –160 –160 + 0. 5(  – 5) –150 4 kHz * * * 14 15 USA/ /4 NOC TABLE 21- 4 (continued) Reasons: The current limits and associated provisions in Section V of Article 21 that were finalized at WRC- 2000 for all non- GSO FSS systems in certain bands between 10 and 30 GHz apply in full to non- GSO FSS systems in highly- elliptical orbits. No additional regulatory provisions are needed for HEO systems in these bands. USA/ /5 NOC ARTICLE 22 Space services 1 Section II – Control of interference to geostationary- satellite systems Reasons: The current limits and associated provisions in Section II of Article 22 that were finalized at WRC- 2000 for all non- GSO FSS systems in certain bands between 10 and 30 GHz apply in full to non- GSO FSS systems in highly- elliptical orbits and are necessary for the protection of co- frequency GSO FSS and Limit in dB( W/ m 2 ) for angle of arrival () above the horizontal plane Frequency band Service* 0°- 5° 5°- 25° 25°- 90° Reference bandwidth * * * 10. 7- 11.7 GHz Fixed- satellite (space- to- Earth), non- geostationary-satellite orbit –126 –126 + 0. 5(  – 5) –116 1 MHz 11. 7- 12.5 GHz (Region 1) 12. 5- 12.75 GHz 1 countries listed in Nos. 5.494 and 5.496) 11. 7- 12.7 GHz (Region 2) 11. 7- 12.75 GHz (Region 3) Fixed- satellite (space- to- Earth), non- geostationary-(Region satellite orbit –124 –124 + 0. 5(  – 5) –114 1 MHz * * * 17. 7- 19.3 GHz 7, 8 Fixed- satellite (space- to- Earth) Meteorological- satellite (space- to- Earth) –115 12bis or –115 – X 12 –115 + 0. 5(  – 5) 12bis or –115 – X + (( 10 + X)/ 20)(  – 5) 12 –105 12bis or –105 12 1 MHz * * * 15 16 BSS systems. No additional regulatory provisions are needed for HEO systems in these bands, and no lessening of the protection required by GSO systems in the same bands should be considered. USA/ /6 NOC RESOLUTION 76 (WRC- 2000) Protection of geostationary fixed- satellite service and geostationary broadcasting- satellite service networks from the maximum aggregate equivalent power flux- density produced by multiple non- geostationary fixed- satellite service systems in frequency bands where equivalent power flux- density limits have been adopted Reasons: The current provisions in Resolution 76 (WRC- 2000) for protection of GSO FSS and BSS networks from the maximum aggregate epfd produced by multiple non- GSO FSS systems in certain bands between 10 and 30 GHz apply in full to non- GSO FSS systems in highly- elliptical orbits and are necessary for the protection of co- frequency GSO FSS and BSS systems. No additional regulatory provisions are needed for HEO systems in these bands, and no lessening of the protection required by GSO systems in the same bands should be considered. 16 17 III. Informal Working Group 4: Fixed Service/ Fixed- Satellite Service Sharing DRAFT PROPOSAL FOR THE WORK OF THE CONFERENCE Doc. WAC/ 112( 04.06.02) (Additional Draft Proposals on Agenda Item 1.26) WRC- 03 Agenda Item 1.26: to consider provisions under which earth stations located on board vessels could operate in fixed satellite networks, taking into account the ITU- R studies in response to Resolution 82 (WRC- 2000); Background Information: The Conference Preparatory text for WRC- 03 provides information on 1) Analysis of studies; 2) Methods to Satisfy the agenda and 3) Regulatory and Procedural Considerations. In the first, the text notes that "to ensure the protection of the FSS networks, ESVS would also have to comply with off- axis limits given in Recommendation ITU- R S. 524; these limits should be met under normal operating conditions." In the last section it is also noted "by some administrations that under current Radio Regulations, the class of station and the category of allocation of both and space stations need to be matched with each other. The paragraphs below are intended to address these issues. The first proposal is parallel to that in No. 1.68. In the second proposal the values for the band 5925- 6425 MHz are taken from Recommendation ITU- R S. 524, and the values for the band 14.0- 14.5 GHz are taken from Recommendation ITU- R S. 728. Proposal USA/ 1.26/ 7 ADD Article 1, Section IV 1.68 bis: earth station on board a vessel: An earth station operating in certain bands of the fixed satellite service located on board a vessel and intended to be used while in motion or during halts at unspecified points. Reason: Adding this definition will ensure that the class of station and the category of allocation of both earth and space stations will be matched to each other. 17 18 A consequence of this definition may be the need to make reference to ESV in the definition of the FSS in No. 1.21. USA/ 1.26/ 8 ADD Footnote 5. ESV 5. ESV For earth stations on board vessels (see 1. 68 bis) operating in the 5925- 6425 MHz band, at any angle  specified below, off the main- lobe axis of an earth- station antenna, the maximum e. i. r. p. in any direction within 3° of the GSO shall not exceed the following values: Angle off- axis Maximum e. i. r. p. per 4 kHz band 2.5°    7° (32 – 25 log ) dB( W/ 4 kHz) 7° <   9.2° 11dB( W/ 4 kHz) 9.2° <   48° (35 – 25 log ) dB( W/ 4 kHz) 48° <  < 180° – 7 dB( W/ 4 kHz) For earth stations on board vessels (see 1. 68 bis) operating in the 14.0- 14.5 GHz band, at any angle  specified below, off the main- lobe axis of an earth- station antenna, the maximum e. i. r. p. in any direction within 3° of the GSO shall not exceed the following values: Angle off- axis Maximum e. i. r. p. in any 40 kHz band 2°    7° 33 – 25 log  dBW 7° <   9.2° 12 dBW 9.2° <   48° 36 – 25 log  dBW  > 48° – 6 dBW Coordination agreements between fixed- satellite service networks under Article 9, may result in lower off-axis e. i. r. p. levels. Reason: In order to ensure that the off axis e. i. r. p. performance of ESVs operating in FSS networks is consistent with that of earth stations already operating in these networks in these bands, and to ensure efficient use of the GSO. 18 19 DRAFT PROPOSAL FOR THE WORK OF THE CONFERENCE Doc. WAC/ 113( 04.06.02) (WRC- 03 Agenda Item 1.32 (Resolution 84)) WRC Agenda Item 1.32: to consider technical and regulatory provisions concerning the band 37.5- 43.5 GHz, in accordance with Resolutions 128 (Rev. WRC- 2000) and 84 (WRC- 2000); Background information Various segments of the 37.5 - 43.5 GHz band are allocated to the FS, FSS, BSS and MSS on a co-primary basis. Segments of this band are being used or planned for high- density applications in the FS (“ HDFS”), and other segments of the band are planned for deployment of high- density applications in the FSS (“ HDFSS”). Co- frequency sharing is not feasible between HDFS and HDFSS systems, but sharing situations where only one of the services operates with ubiquitously deployed small terminals may be practicable. Significant actions were taken at WRC- 2000 with respect to the 37.5 - 43.5 GHz band. Among other things, WRC- 2000 adopted provisional power flux- density (pfd) limits for geostationary and non- geostationary satellites in the fixed- satellite service (FSS), in the broadcasting- satellite service (BSS), and in the mobile- satellite service (MSS) in this frequency range. WRC- 2000 also called for study of the criteria and techniques to address interference from transmitters of FS into earth station receivers in high- density applications in the FSS in the bands 39.5 - 40.0 GHz and 40.5 – 42.0 GHz intended to operate in the same geographic area. The ITU- R has now completed its study of the provisional pfd limits adopted for satellites of the FSS, BSS, and MSS in the 37.5- 42.5 GHz range, and has concluded that the provisional pfd limits can be confirmed at their current values. In so doing, the ITU- R noted the position of some Region 2 administrations that, to protect certain sensitive FS links in the 37.5- 40 GHz band, it would be necessary for a GSO FSS satellite providing service on their territory to reduce the pfd levels that are produced during clear- sky operation by 12 dB from the respective levels in Table 21- 4 of Article 21. The ITU- R also acknowledged that these pfds may constrain the FSS to the use of only large coordinated earth stations in this band. Nevertheless, for both GSO and non- GSO FSS satellites, the ITU- R concluded that it was appropriate to maintain the pfd values in Table 21- 4 of Article 21. The confirmation of the provisional pfd limits would provide satisfactory closure to a complex and difficult set of issues that has been intensively studied within the ITU- R for more than five years. The ITU- R, however, did not complete its study of the criteria and techniques for addressing interference from transmitters of the fixed service into earth station receivers in high- density applications in the bands 39.5- 42 GHz and intended for operation in the same geographic area. This aspect of Resolution 84 (WRC- 2000) formed an essential part of the overall arrangement between the FSS and the FS in the 37.5- 42.5 GHz range. Although study of the pfd- related elements of sharing in the 37.5- 42.5 GHz range has been completed and regulations on the subject are able to be finalized at WRC- 03, the ITU- R should continue the studies called for in invites 6 of Resolution 84 regarding means of addressing interference from transmitters of the FS into earth station receivers in high- density applications in the 40- 42 GHz portion of the 39.5- 42 GHz band. Proposals of the United States to implement the conclusions reached by the ITU- R in its studies under Resolution 84, as well to reflect the ITU- R’s identification of the area where further study still is needed, are provided below: 19 20 Proposals: USA/ 1.32/ 1 MOD TABLE 21- 4 (CONTINUED) Limit in dB( W/ m 2 ) for angle of arrival () above the horizontal plane Frequency band Service* 0°- 5° 5°- 25° 25°- 90° Reference bandwidth 37. 5- 40 GHz Fixed- satellite (non- geostationary-satellite orbit) Mobile- satellite (non- geostationary-satellite orbit) –120 10, 16, 17 –120 + 0. 75(  – 5) 10, 16, 17 –105 10, 16, 17 1 MHz 5°- 20° 20°- 25° 37. 5- 40 GHz Fixed- satellite (geostationary-satellite orbit) Mobile- satellite (geostationary-satellite orbit) –127 16, 17 –127 + (4/ 3) ( – 5) 16, 17 –107 + 0. 4 ( – 20) 16, 17 –105 16, 17 1 MHz 40- 40.5 GHz Fixed- satellite –115 –115 + 0. 5(  – 5) –105 1 MHz 40. 5- 42 GHz Fixed- satellite (non- geostationary-satellite orbit) Broadcasting- satellite (non- geostationary-satellite orbit) –115 10, 16, 17, 18 –115 + 0. 5(  – 5) 10, 16, 17, 18 –105 10, 16, 17 18 1 MHz 5°- 15° 15°- 25° 40. 5- 42 GHz Fixed- satellite (geostationary- satellite orbit) Broadcasting- satellite (geostationary- satellite orbit) –120 16, 17, 18 –120 + ( – 5) 16, 17, 18 –110 + 0.5 ( – 15) 16, 17, 18 –105 16, 17, 18 1 MHz 42- 42.5 GHz Fixed- satellite (non- satellite orbit) Broadcasting- satellite (non- geostationary-satellite orbit) –120 10, geostationary-16, 17, 18 –120 + 0. 75(  – 5) 10, 16, 17, 18 –105 10,16, 17, 18 1 MHz 5°- 20° 20°- 25° 42- 42.5 GHz Fixed- satellite (geostationary- satellite orbit) Broadcasting- satellite (geostationary- satellite orbit) –127 16, 17, 18 –127 + (4/ 3) ( – 5) 16, 17, 18 –107 + 0. 4 ( – 20) 16, 17 18 –105 16, 17, 18 1 MHz 20 21 Reasons: On the basis of its studies under Resolution 84 (WRC- 2000), the ITU- R has confirmed the pfd values for FSS, MSS, and BSS satellites in the 37.5- 42.5 GHz range. As a result, it is appropriate to remove the provisional status that was placed on these limits by WRC- 2000. USA/ 1.32/ 2 SUP 16 21. 16.11 Except to the extent provided in No. 21. 16. 12, these values are provisional and shall be applied subject to Resolution 84 (WRC- 2000). (WRC- 2000) Reasons: Consequential to proposal USA/ 1.32/ 1. USA/ 1.32/ 3 SUP 17 21. 16.12 In the bands 37. 5- 40 and 40. 5- 42. 5 GHz, notwithstanding any further studies, the power flux- density limits in this table shall be applied to stations in the fixed- satellite service for which complete coordination (geostationary- satellite orbit) or notification information (non- geostationary- satellite orbit), as appropriate, has been received by the Bureau after 2 June 2000 and before the end of WRC- 03. (WRC- 2000) Reasons: Consequential to proposal USA/ 1.32/ 1. USA/ 1.32/ 4 SUP 18 21. 16.13 The values given for the broadcasting- satellite service are provisional and need review by a future conference. (WRC- 2000) Reasons: Consequential to proposal USA/ 1.32/ 1. USA/ 1.32/ 5 MOD 5.551AA In the bands 37.5- 40 GHz and 40.52- 42.5 GHz, the power flux- density at the Earth’s surface from any FSS space station should be at the level( s) non- geostationary- satellite systems in the fixed- satellite service should employ power control or other methods of downlink fade compensation of the order of 10 dB, such that the satellite transmissions are at power levels required to meet the desired FSS link availability and performance objectives of the subject applications, but no greater than the relevant power flux- density limits in Table 21- 4, while addressing the sharing conditions with while reducing the level of interference to the fixed service. The use of downlink fade compensation methods are under study by the ITU- R (see Resolution 84 (WRC- 2000)). (WRC- 2000) Reasons: Even with the confirmation of the provisional pfd levels pursuant to ITU- R studies under Resolution 84 (WRC- 2000), it is important to the sharing conditions with the FS that the satellite pfds be only at the level required to meet link availability and performance objectives. 21 22 USA/ 1.32/ 6 MOD 40. 5- 51.4 GHz Allocation to services Region 1 Region 2 Region 3 40. 5- 41 FIXED FIXED- SATELLITE (space- to- Earth) MOD 5.551AA BROADCASTING BROADCASTING- SATELLITE Mobile 5.547 40. 5- 41 FIXED FIXED- SATELLITE (space- to- Earth) MOD 5.551AA BROADCASTING BROADCASTING- SATELLITE Mobile Mobile- satellite (space- to- Earth) 5.547 40. 5- 41 FIXED FIXED- SATELLITE (space- to- Earth) MOD 5.551AA BROADCASTING BROADCASTING- SATELLITE Mobile 5.547 Reasons: Consequential to inclusion of 40.5- 42 GHz band in No. S5.551AA, as proposed to be modified in Proposal No. USA/ 1.32/ 5 above. USA/ 1.32/ 7 ADD RESOLUTION BSA (WRC- 2003) Means to address interference from transmitters of the fixed service into earth station receivers in high- density applications in the FSS having allocations in the band 40- 42 GHz and intended for operation in the same geographic area The World Radiocommunication Conference (Caracas, 2003), considering a) that this Conference has established power flux- density (pfd) limits for the fixed- satellite service (FSS) (space- to- Earth) in the bands 37.5- 40.0 GHz and 40.5- 42.5 GHz, and the mobile- satellite service (MSS) (space- to- Earth) in the band 39.5- 40 GHz; b) that, in the band 37.5- 42.5 GHz, Recommendation ITU- R SF. 1484- 1 recommends maximum pfd levels for non- geostationary (non- GSO) FSS satellites and Recommendation ITU- R SF.[ 4- 9S/ BL/ 3] recommends maximum pfd levels for geostationary (GSO) FSS satellites; c) that, although sharing is feasible between FSS earth stations and terrestrial stations provided that appropriate coordination procedures and/ or operational techniques are employed, sharing may 22 23 in practice become difficult when high geographic densities of such stations are deployed in bands heavily used by either service; d) that, within the range 40- 42 GHz, many administrations plan to deploy FSS systems using ubiquitous very small aperture terminals; e) that WRC- 2000 invited the ITU- R to undertake, as a matter of urgency, studies on the appropriate criteria and techniques for addressing interference from transmitters of the fixed service into earth station receivers in high- density applications in the FSS having allocations in the bands 39.5- 40 GHz and 40.5- 42 GHz and intended for operation in the same geographic area; f) that the ITU- R has not yet completed the studies described in considering e) above; resolves to invite the ITU- R 1 to undertake, as a matter of urgency, studies on the appropriate criteria and techniques for addressing interference from transmitters of the fixed service into earth station receivers in high- density applications in the FSS having allocations in the band 40- 42 GHz and intended for operation in the same geographic area; 2 to report on the results of these studies in time for WRC- 06, recommends that WRC- 06 take appropriate action based on the results of these studies. Reasons: Work was not completed on invites 6 from WRC- 2000 Resolution 84. This is important work in the overall sharing arrangements for FSS and FS in the 37.5- 42.5 GHz frequency range, and should be completed within the interval between WRC- 03 and WRC- 06. The band under consideration for these studies should be concentrated on the 40- 42 GHz band. USA/ 1.32/ 8 SUP RESOLUTION 84 (WRC- 2000) Power flux- density limits in the bands 37.5- 42.5 GHz for the fixed- satellite service, broadcasting- satellite service and mobile- satellite service Reasons: Consequential to the confirmation of the power flux- density levels within the 37.5- 42.5 GHz band pursuant to ITU- R study, and the capture in new Resolution BSA of the holdover point from invites 6 of Resolution 84 (WRC- 2000). 23 24 DRAFT PROPOSAL FOR THE WORK OF THE CONFERENCE Doc. WAC/ 114( 04.06.02) (WRC- 03 Agenda Item 1.32 (Resolution 128)) WRC- 03 Agenda Item 1.32: to consider technical and regulatory provisions concerning the band 37.5- 43.5 GHz, in accordance with Resolutions 128 (Rev. WRC- 2000) and 84 (WRC- 2000); BACKGROUND The band 42.5 - 43.5 GHz is allocated to the Radioastronomy (RA) service on a co- primary basis, while the frequency bands immediately below 42.5 GHz are allocated to the FSS and BSS (both space- to- Earth) on a co- primary basis with each other and with terrestrial services. To protect operating RA stations, WRC- 2000 established a new footnote, No. 5.551G, which contains a provisional PFD limit - not to exceed -167 dB( W/ m 2 ) in any 1 MHz band at the site of a radio astronomy station for more than 2% of the time - on emissions produced into the 42.5 - 43.5 GHz band by non- GSO FSS or BSS systems operating in the 41.5 - 42.5 GHz band. A similar limit was imposed on emissions that GSO FSS or BSS satellites operating in the 42.0 - 42.5 GHz band may produce at the sites of RA stations operating in the 42.5 - 43.5 GHz band. Pursuant to Resolution 128 (Rev. WRC- 2000), the ITU- R was to conduct studies to review these provisional PFD limits; to identify technical and operational measures in the band 41.5 – 42.5 GHz, including possible mitigation techniques to protect RA operations; and to propose measures that may be implemented to reduce the susceptibility of stations in the RA to harmful interference. Issues to be addressed included: € Adequacy of provisional limits on power flux- density (PFD) produced into the sites of radio astronomy service (RAS) stations operating in the band 42.5 - 43.5 GHz by non- GSO satellites operating in the space- to- Earth direction in the fixed- satellite service (FSS) or broadcasting-satellite service (BSS) in the band 41.5 - 42.5 GHz, and by GSO FSS or BSS satellites operating in the space- to- Earth direction in the band 42.0 - 42.5 GHz. € Identification of technical and operational measures that FSS/ BSS satellite networks can take to protect RA operations in the 42.5 - 43.5 GHz band, and of measures that may be implemented by RA service users to reduce the susceptibility of stations in the RA service to harmful interference. The U. S. is of the view that, in order to protect radio astronomy observations in the 42.5- 43.5 GHz band from out- of- band emissions from FSS and BSS satellites in the adjacent bands below 42.5 GHz and simultaneously providing the maximum opportunities for satellites, the preferred approach is to establish interference thresholds in the Radio Regulations for GSO satellites and non- GSO satellites operating in the 42- 42.5 GHz band. If the thresholds would be exceeded for more than 2% of the time, the satellite administration would have to enter into bilateral arrangements with affected radio astronomy administrations to resolve the excess interference. The process for reaching such arrangements would be specified in a new Resolution XXX. 24 25 Proposals to reflect these views are provided below: Proposals: USA/ 1.32/ A MOD 5.551G The interference threshold in terms of the aggregate power flux- density in the 42.5-43.5 GHz band produced by all the space stations in any non- GSO FSS (space- to- Earth) or BSS (space- to- Earth) system operating in the 421.5- 42.5 GHz band shall be Š137 dB (W/ m 2 /GHz) for continuum observations in the 42.5- 43.5 GHz band, and –153 dB( W/ m 2 /500 kHz) for spectral line observations in the 42.78- 43.5 GHz band, not exceed Š167 dB (W/ m 2 ) in any 1 MHz band at the site of a radio astronomy station where single- dish radiotelescope observations are being conducted in the 42.5- 43.5 GHz band. station for more than 2% of the time. The interference threshold in terms of the power flux- density in the band 42.5- 43.5 GHz produced by any GSO FSS (space- to-Earth) or BSS (space- to- Earth) station operating in the band 42.0- 42.5 GHz shall be Š137 dB (W/ m 2 /GHz) for continuum observations in the 42.5- 43.5 GHz band, and –153 dB( W/ m 2 /500 kHz) for spectral line observations in the 42.78- 43.5 GHz band, at the site of a radio astronomy station where single- dish radiotelescope observations are being conducted in the 42.5- 43.5 GHz band. If an administration determines that the thresholds above would be exceeded for more than 2% of the time, bilateral arrangements between affected administrations would be required. The provisions of Resolution XXX (WRC- 03) shall apply. not exceed Š167 dB (W/ m 2 ) in any 1 MHz band at the site of a radio astronomy station. These limits are provisional and will be reviewed in accordance with Resolution 128 (Rev. WRC- 2000). Reasons: Studies in the ITU- R have shown that unwanted emissions from FSS and BSS satellites operating below 42 GHz are not a potential difficulty for radio astronomy observations in the 42.5- 43.5 GHz band. Studies have also shown that unwanted emissions from FSS and BSS satellites in the 42- 42.5 GHz band are not a potential difficulty for VLBI observations by radio astronomy stations in the 42.5- 43.5 GHz band. As for single dish telescopes conducting observations on the spectral lines mentioned in Recommendation ITU- R RA. 314- 8, there is the potential for interference from FSS and BSS satellites operating in the 42- 42.5 GHz band. In the latter cases, however, the number of single- dish radiotelescope stations operating around the world is small enough, and the characteristics of the FSS and BSS downlink transmissions are such, that it is preferable to manage such potential interference cases through bilateral arrangements conducted pursuant to a process that is established in new Resolution XXX (see proposal USA/ 1.32/ B below). 25 26 USA/ 1.32/ B ADD RESOLUTION XXX (WRC- 03) Process for assuring the protection of single- dish radiotelescopes in the radio astronomy service conducting spectral line and continuum observations within the 42.5- 43.5 GHz band The World Radiocommunication Conference (Caracas, 2003), considering a) that there are primary allocations to the fixed- satellite service (FSS) (space- to- Earth) and to the broadcasting- satellite service (BSS) in the 40.5- 42.5 GHz band; b) that because propagation impairments in the 40 GHz band are severe in bad weather, most satellite systems, in order to achieve their desired link availability and high data rates, propose to operate with high gain satellite antennas (the 3 dB beamwidths of the 40 GHz transmit and the receive antennas are in a range from 0.3° to 0.65° for GSO satellites and in a range of 0.6Ί to 1.8Ί for non- GSO satellites); c) that there are limits on the power flux- density (pfd) produced by FSS and BSS stations and systems in the 40.5- 42.5 GHz band, with the most restrictive limits on pfd being found in the 42- 42.5 GHz band, and that satellite systems in this frequency range would operate at clear- sky levels significantly lower than the pfd limits for all but very short periods of time during fading conditions; d) that due to satellite weight and power constraints, the area covered by the beams active at any instant in all proposed FSS and BSS systems that plan to operate in the band 40.5- 42.5 GHz will be very small, typically representing less than 5% of the satellite field of view; e) that the FSS/ BSS band at 40.5- 42.5 GHz is adjacent to the band 42.5- 43.5 GHz which is allocated, inter alia, to the radio astronomy service (RAS); f) that radio astronomy stations in the band 42.5- 43.5 GHz (including both single dish radiotelescopes and very long baseline interferometry (VLBI) facilities) are used to conduct continuum and spectral line observations using one of approximately 30 sites located around the world; g) that the threshold level of detrimental interference to the RAS in the 42.5- 43.5 GHz band is Š153 dB (W/ m 2 /500 kHz) for spectral line observations, Š137 dB (W/ m 2 /GHz) for continuum observations, and Š116 dB (W/ m 2 /500 kHz) for VLBI RAS stations; h) that results of studies indicate that the unwanted emission levels of GSO FSS and BSS systems operating in the 42.0- 42.5 GHz band, and of non- GSO FSS and BSS systems operating in the 41.5- 42.5 GHz band, meet the detrimental interference threshold for VLBI RAS stations operating in the 42.5- 43.5 GHz band; 26 27 j) that unless technical or operational measures are taken, the detrimental interference thresholds for a single dish radiotelescope, for continuum observations and for spectral line observations, may not be met by unwanted emissions from a GSO FSS or BSS satellite or by unwanted emissions from a non- GSO FSS or BSS system in the 42- 42.5 GHz band; k) that because there are relatively few RAS sites operating with single dish telescopes in the 42.5- 43.5 GHz band, it may be feasible to employ technical or operational measures, including but not limited to such interference mitigation techniques as geographical isolation, time sharing, better RAS antenna roll- off, etc., in order to reduce the potential for detrimental interference to the RAS receiver sites operating in this band; l) that, taking into account the above considerings, it is feasible to rely on arrangements between concerned FSS/ BSS and RAS administrations to ensure that the unwanted emissions for FSS and BSS satellites and systems at 42- 42.5 GHz do not cause detrimental interference to RAS stations conducting continuum and spectral line observations within the 42.5- 43.5 GHz band; recognizing a) that WRC- 2000 established provisional power flux- density limits for out- of- band emissions from BSS and FSS stations in accordance with No. 5.551G, b) that WRC- 2000 resolved that the provisional power flux- density limits in No. 5.551G shall be applied to BSS and FSS stations for which complete coordination (GSO) or notification (non-GSO) information, as appropriate, has been received by the Bureau after the end of WRC- 2000 and before the end of WRC- 03; c) that because the current protection criteria given in No. 5.551G do not take into account the reference bandwidth and the type of observations being conducted at the radio astronomy station, adjustments regarding both of these criteria and the associated percentage of time that unwanted satellite emissions may exceed the criteria have been made by this Conference to No. 5.551G, d) that the flexibility of satellite networks and systems to accommodate changes in frequency plans and beam patterns diminishes as progress on implementation of the networks and systems advances, with operational or near operational networks and systems having very limited, if any, flexibility to accommodate such changes, resolves 1 that if the unwanted emission level produced by a GSO FSS or BSS satellite or by a non-GSO FSS or BSS system operating in the band 42- 42.5 GHz for more than 2% of the time would exceed the applicable interference threshold from No. 5.551G at the site of a RAS station where single- dish telescope observations are being conducted, administrations operating such satellites and systems shall enter into discussions with the administration operating the affected RAS station to determine steps that can be taken to keep the unwanted emissions at or below the applicable interference threshold; 2 that administrations operating FSS or BSS satellites and systems, in carrying out their obligations under resolves 1 above, shall take into account only those RAS stations for which complete notification materials have been received by the BR as of the date on which complete coordination or notification materials (as appropriate) for the subject satellite network or system are received by the BR; 27 28 3 that, notwithstanding resolves 2 and taking into account recognizing d), administrations operating FSS or BSS satellites and systems, in carrying out their obligations under resolves 1 above, are urged to take into account later- notifying RAS stations to the extent reasonably practicable; 4 that the obligations on administrations under resolves 1 and 2 above shall apply to all FSS or BSS networks and systems for which complete coordination (GSO) or notification (non- GSO) has been received after June 3, 2000, urges administrations that plan FSS or BSS networks or systems in the 42- 42.5 GHz band to take all reasonably practical steps, early in the design phase of implementation, to avoid exceeding the interference thresholds in No. 5.551G at the site of a RAS station where single- dish radiotelescope observations are being conducted in the 42.5- 43.5 GHz band, invites ITU- R to facilitate the ability of administrations to meet the obligations of resolves 1 above by identifying technical and operational measures in the band 42- 42.5 GHz, including possible mitigation techniques, that administrations may implement to protect concerned radio astronomy stations operating in the bands referenced in No 5.551G, as well as measures that may be implemented by single- dish radiotelescopes conducting continuum and spectral line observations in the same bands to reduce their susceptibility to harmful interference from satellite networks and systems, instructs the Director, BR to review, on the basis of this Resolution and the modification to No. 5.551G made by this Conference, any findings made pursuant to No. 5.551G (WRC- 2000) and Resolution 128 (Rev. WRC- 2000) in the interval between the end of WRC- 2000 and the end of WRC- 03. USA/ 1.32/ C SUP RESOLUTION 128 (Rev. WRC- 2000) Protection of the radio astronomy service in the 42.5- 43.5 GHz band Reasons: Consequential to the conclusion that RAS is adequately protected if out- of- band emissions from FSS and BSS satellites in the 42- 42.5 GHz band are limited in the manner proposed in No. MOD5.551G and Resolution XXX above. 28 29 IV. Informal Working Group 5: Public Protection and Other Issues DRAFT PROPOSAL FOR THE WORK OF THE CONFERENCE Doc. WAC/ 115( 04.06.02) WRC- 03 Agenda Item 1.5: To consider, in accordance with Resolution 736 (WRC- 2000), regulatory provisions and spectrum requirements for new and additional allocations to the mobile, fixed, Earth exploration- satellite and space research services, and to review the status of the radiolocation service in the frequency range 5150- 5725 MHz with a view to upgrading it, taking into account the results of ITU- R studies; Background: At WRC- 2000 there were several proposals for items to be placed on the WRC- 03 Agenda dealing with spectrum in the 5 GHz range. These items included new allocations to the mobile service (for Wireless Access Systems (WAS), including Radio Local Area Networks (RLAN)) and to the fixed service (for Fixed Wireless Access (FWA) in Region 3). In addition, revisions to allocations for the Earth exploration- satellite and (active) and space research (active) services and the radiolocation service will be considered at WRC- 03. These matters were combined into one agenda item, since possible additional allocations or revisions to existing allocations for any one of these services would affect the potential allocation of one or more of the other services within the 5 GHz frequency range. One of few recent telecommunications success stories has been the rapid growth of broadband access through the use of wireless access systems, including RLANs. The technology supporting the majority of these applications is for low- power, short- range devices that permit users to communicate inexpensively. Technology has evolved to the point where wireless networks can be readily and inexpensively deployed to support a wide variety of applications including service to businesses and their customers, educational and health care institutions, and even broadband access provided to private citizens in their homes. These devices are becoming widely used in some parts of the world, particularly in North America and Europe. Most administrations are aware of the growth of RLAN devices in the 2.4 GHz range and the attendant benefits to users and economies. In the United States and in other administrations frequencies in the 5 GHz range have been set aside for similar wireless broadband access service. The 5 GHz RLAN arena will be the next growth area for inexpensive wireless broadband access; devices are already coming to market. The United States Federal Communications Commission’s rules 1 allow for the use of RLAN and FWA devices without a requirement for individual licenses, on a non- protected, non- interference basis in the 5150- 5350 and 5725- 5825 MHz bands. These devices have power level and antenna gain restrictions on them to protect the existing allocated services and can neither claim protection from nor cause interference to the existing services in these bands. Thus, in the United States, an RLAN system meeting the power level and antenna gain restrictions must still remedy any interference that it causes. Europe has also provided for the use of these devices in similar 1 See 47 C. F. R. Part 15, Subpart E. 29 30 spectrum, but on a co- primary allocation basis with technical restrictions designed to assure the protection of pre- existing primary services. A globally harmonized allocation for such devices, as is clearly contemplated in Resolution 736 (WRC- 2000), would greatly enhance the utility and benefit to society of these devices by facilitating roaming, reducing manufacturing and end- user costs, and providing a greater degree of regulatory certainty as to the future value of investments in this technology as well as the long- term utility for users. Because 5 GHz wireless access systems, including RLANs, will share spectrum with services allocated on a primary basis, it is essential that such devices be able to coexist with those other services. In the ITU, studies are underway to ensure that mitigation techniques, such as dynamic frequency selection (“ DFS”), that are being developed by RLAN industry standards bodies will allow wireless access systems, including RLANs, to detect and avoid other primary users of 5 GHz spectrum. 2 Consequently, in addition to proposing an allocation for 5 GHz wireless access systems, including RLANs, the United States also proposes regulatory measures to ensure the continued protection of other co- primary 5 GHz services. The United States believes that 5 GHz wireless access systems, including RLANs, have the potential to greatly enhance the roll- out of broadband services globally. Key factors for successful broadband access on a global basis are the continued ability to deploy these devices ubiquitously without a requirement for individual licenses and also the harmonization globally of spectrum available for such uses. In addition, these devices must protect other critical users of 5 GHz spectrum. In the United States today these devices operate in 5 GHz spectrum while protecting other users at 5 GHz. The United States believes this operating situation can be extended worldwide. 2 IEEE 802.11 TGh has done significant work in developing extensions to the 802.11 standard for DFS and TPC, with a Draft Standard nearing completion. Furthermore, both ETSI BRAN and WECA are currently working on sharing studies, based on detailed knowledge and realistic assumptions about how RLANs actually work. 30 31 Proposal: USA/ 1.5/ 1 ADD 5. xxxY Use of this band by the mobile service is intended for use by wireless access systems, including RLANs (see ITU- R Recommendation M. 1450). Other forms of mobile service usage shall not be permitted in this band. Reason: To clarify that the mobile allocations proposed for addition to the table of allocations are restricted to WAS/ RLAN device usage only and are not “generic” mobile allocations open to other forms of usage. USA/ 1.5/ 2 ADD 5. xxxZ In the bands 5150- 5350 MHz and 5470- 5725 MHz, stations in the mobile service shall not cause harmful interference to other stations operating under existing primary allocations. When permitting the use of wireless access systems, including RLANs, in these frequency bands, administrations should take note of the availability of mitigation techniques such as those in the most recent version of ITU- R Recommendation M. xxxx “Dynamic Frequency Selection and Transmit Power Control in 5 GHz RLANs,” which describes means to significantly reduce or eliminate potential interference. Administrations should strongly encourage the use of such techniques. Reason: To provide regulatory measures for the protection of the existing co- primary services from harmful interference from wireless access systems, including RLANs, authorized under the proposed (restricted) mobile allocation. USA/ 1.5/ 3 MOD 5 150- 5 725 MHz Allocation to services Region 1 Region 2 Region 3 *** 5 150- 5 250 AERONAUTICAL RADIONAVIGATION FIXED- SATELLITE SERVICE (Earth- to- space) 5.447A ADD MOBILE 5. xxxY 5.446 5. 447 5. 447B 5.447C ADD 5. xxxZ 31 32 5 250- 5 255 EARTH EXPLORATION- SATELLITE (active) RADIOLOCATION SPACE RESEARCH 5. 447D ADD MOBILE 5. xxxY 5.448 5.448A ADD 5.xxxZ 5 255- 5 350 EARTH EXPLORATION- SATELLITE (active) RADIOLOCATION SPACE RESEARCH (active) ADD MOBILE 5. xxxY 5.448 5.448A ADD 5.xxxZ 5 350- 5 460 EARTH EXPLORATION- SATELLITE (active) 5.448B AERONAUTICAL RADIONAVIGATION 5. 449 Radiolocation 5 460- 5 470 RADIONAVIGATION 5.449 Radiolocation 5 470- 5 650 MARITIME RADIONAVIGATION Radiolocation ADD MOBILE 5. xxxY 5.450 5.451 5. 452 ADD 5. xxxZ 5 650- 5 725 RADIOLOCATION ADD MOBILE 5.xxxY Amateur Space research (deep space) 5. 282 5. 451 5.453 5. 454 5.455 ADD 5.xxxZ *** Reason: Provide globally harmonized spectrum for wireless access systems, including RLANS, fulfilling the need recognized in Agenda Item 1.5 and Resolution 736, WRC- 2000. 32 33 USA/ 1.5/ 4 SUP resolves 1 of RESOLUTION 736 (WRC- 2000) … resolves that, on proposals from administratons and taking into account the results of studies in ITU- R and the Conference Preparatory Meeting, WRC- 03 should consider: 1 allocation of frequencies to the mobile service in the bands 5 150- 5 350 MHz and 5 470- 5 725 MHz for the implementation of wireless access systems, Including RLANS; … [the disposition of the remainder of the resolves ( 2, 3, 4) of RESOLUTION 736 (WRC-2000) are beyond the scope of this proposal] Reason: If the provisions of this proposal are adopted, resolves 1 of RESOLUTION 736 (WRC-2000) and the relevant part of Agenda Item 1.5 (WRC- 03) will have been satisfied and this section will no longer be required. 33 34 Concerns on the draft proposal for WRC- 03 Agenda Item 1.5 expressed by participants on the WRC- 03 Advisory Committee: 1) American Radio Relay League (ARRL): ----- Original Message ----- From: Sumner, Dave, K1ZZ