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CMR03/368-E
INTERNATIONAL TELECOMMUNICATION UNION/ WRC-03 / WORLD
RADIOCOMMUNICATION
CONFERENCE / Document 368-E
1 July 2003
Original: English
GENEVA, 9 JUNE – 4 JULY 2003
PLENARY MEETING
Chairman, ad hoc Group 5 of the Plenary
first report from the chairman of ad hoc group 5
of the plenary
agenda item 1.34
Ad hoc Group 5 of the Plenary has considered the possible revision of Resolution 539 (WRC2000), as required by agenda item 1.34. The revised text, as well as consequential changes to other regulatory provisions, can be found in Annex 1. In preparing this text the group was able to agree on the text which includes two options as follows:
Option 1 where the angle of arrival at which the regulatory approach changes from a method using delayed hard limits to a method applying the coordination procedure of No. 9.11 is 65degrees. The appropriate portions of the text are shown with an * for this option.
Option 2 where the angle of arrival at which the regulatory approach changes from a method using delayed hard limits to a method applying the coordination procedure of No. 9.11 is 82degrees. The appropriate portions of the text are shown with an ** for this option.
If Option 2 is chosen, the Group concluded that a text allowing for the notifying administration to request the assistance of the Bureau should be included in the minutes of the Plenary. This text would be:
In application of Resolution 539 (WRC-03) when the notifying administration is required to seek the agreement of an affected administration under the first sub-paragraph of instructs the Radiocommunication Bureau 1, and the notifying administration has not received a reply to a request for agreement from an affected administration, it can request the assistance of the Bureau. If, after the Bureau’s assistance, the affected administration still fails to reply, it shall be deemed that the administration has agreed to the excess power fluxdensity on the territory of its country.
These two options are submitted for consideration by the Plenary.
J. LEWIS
Chairman, ad hoc Group 5 of the Plenary, Box 145
Annex: 1
annex 1
MOD
RESOLUTION 539 (Rev.WRC-20003)
Use of the band 2630-2655 MHz in certain Region 3 countries
by non-geostationary satellite systems in the
broadcasting-satellite service (sound)
The World Radiocommunication Conference (IstanbulGeneva, 20003),
considering
a) that the band 2535-2655 MHz is allocated under No. 5.418 to the broadcasting-satellite service (sound) in certain Region 3 countries;
b) that the provisions of Resolution 528 (WARC-92) currently limit the use of this band by systems in the broadcasting-satellite service (sound) to the upper 25 MHz of the band;
c) that, prior to WRC-2000, there were no coordination procedures applicable to nongeostationary (non-GSO) broadcasting-satellite (sound) systems in this band in relation to other non-GSO or GSO satellite networks;
d) that satellite technology has now advanced to the stage where non-GSO systems in the broadcasting-satellite service (sound) are technically and economically feasible when operated with high elevation angles and that there are practical designs available to ensure that the radiation of the non-GSO satellite in the broadcasting-satellite service (sound) outside of the main beam is kept at low levels;
e) that satellite systems in the broadcasting-satellite service as described in consideringd) can be used for the delivery of high-quality, spectrally efficient broadcasting-satellite service (sound) to portable and mobile terminals;
f) that non-GSO systems in the broadcasting-satellite service (sound) in the band 26302655MHz in Region 3 have been notified to ITU and are expected to be brought into use in the near future;
g) that, prior to WRC-2000, the protection of existing terrestrial services was addressed through the coordination procedures of No. 9.11;
h) that the provision cited in considering g) may be inadequate to ensure the future deployment of terrestrial services in this band,;
i) that a regulatory procedure is required in order to meet the dual objectives of providing adequate long-term protection to existing and planned terrestrial services while not placing undue constraint on the development and implementation of the non-GSO BSS (sound) system;
j) that there are non-GSO systems being planned for operation in the BSS (sound) in the band 26302655MHz in Region 3 that have highly elliptical orbits;
k) that ITU-R has undertaken studies of the likely aggregate interference from a number of co-frequency broadcasting-satellite systems sharing with the terrestrial services on a co-primary basis;
l) that ITU-R has undertaken studies that assumed there is only one satellite active at any time in a non-GSO system operating in highly elliptical orbits,
urges
a) administrations planning to operate non-GSO broadcasting-satellite (sound) service systems subject to this Resolution, to take measures to design the system to minimize interference to terrestrial services outside the non-GSO BSS (sound) service area, for example as in consideringd) above;
b) administrations, whose territory is geographically close to the territory of an administration planning to operate a non-GSO broadcasting-satellite service (sound) system subject to this Resolution, and for which there is a correspondingly high elevation angle to the active satellite, to take measures to facilitate the operation of non-GSO broadcasting-satellite service (sound) systems,
resolves
1 that any broadcasting-satellite service (sound) system using non-geostationary orbits brought into operation in the band 2630-2655 MHz in Region 3 shall be operated such that the minimum elevation angle over the service area is not less than 4055°, for the purposes of sharing with terrestrial services;
2 that, before an administration notifies to the Radiocommunication Bureau or brings into use a frequency assignment for a broadcasting-satellite service (sound) system using non-GSO satellites in the band 2630-2655MHz, for which complete Appendix 4 coordination information, or notification information, has been received after 2 June 2000, the following regulatory arrangements shall apply.it shall seek the agreement of any administration having a primary allocation to terrestrial services in the same frequency band on whose territory the power fluxdensity exceeds the following thresholds:
The following mask of power flux-density values at the Earth’s surface produced by emissions from a space station for all conditions and for all methods of modulation shall be used as the basis of the regulatory procedures of this Resolution:
-128130 dB(W/(m2 · MHz)) for 0° £q £ 5°
-128 + 0.75 (q - 5) dB(W/(m2 · MHz)) for 5° q£ 25°
-113 dB(W/(m2 · MHz)) for 25° q£ 90°
–130 + 0.4 (q – 5) dB(W/(m2 · MHz)) for 5° £q £ 25°
–122 dB(W/(m2 · MHz)) for 25° £q £ 45°
–122 + 0.2 (q – 45) dB(W/(m2 · MHz)) for 45° £q £ 65°
[–118 dB(W/(m2 · MHz)) for 65° £q £ 90°]*
[–118 + 0.18 (q – 65) dB(W/(m2 · MHz)) for 65° £q £ 82°]**
[–115 dB(W/(m2 · MHz)) for 82° £q £ 90°]**
where q is the angle of arrival of the incident wave above the horizontal plane, in degrees;[1].
These values relate to the power flux-density and angles of arrival which would be obtained under free-space propagation conditions.
Furthermore:
– for angles of arrival £ [65°]* [82°]** in the power fluxdensity mask in resolves 2, if the limits are exceeded, the notifying administration shall obtain the explicit agreement from any administration identified by the Bureau in its examination below;
– for angles of arrival from [65°]* [82°]** to 90° in the power fluxdensity mask in resolves2, the coordination procedure for those administrations identified by the Bureau in its examination below shall be subject to No. 9.11;
3 that the elevation angle value in resolves 1 and the power flux-density threshold values in resolves 2 shall be applied provisionally until the end of WRC03; any broadcasting-satellite service (sound) system using non-GSO satellites in the band 2630-2655 MHz, for which complete Appendix 4 coordination information, or notification information, has been received after 2 June 2000, shall be subject to the elevation angle and power flux-density threshold values determined by this Conference unless Resolution 49 (Rev.WRC-2000) information has been supplied for that system by the beginning of WRC-03;
43 that systems in the broadcasting-satellite service (sound) using non-GSO satellites shall be limited to national services unless agreement has been reached to include the territories of other administrations in the service area;
4 that, within the context of this Resolution, an administration listed in No. 5.418 shall not have simultaneously two overlapping frequency assignments, one under that provision, and the other one under provision No. 5.416;
5 that, as of 3 June 20004 July 2003, the Bureau and administrations shall apply the provisions of Articles 9 and 11 taking into account Nos. 5.418, 5.418A, 5.418 and, 5.418C, as well as No.5.418and this Resolution, as revised by this Conference,
invites ITU-R
1 to conduct the necessary studies in time for WRC-03 to develop calculation methodologies and sharing criteria to be used by administrations in applying the provisions of Nos. 5.418A, 5.418B and 5.418C;
2 to conduct the necessary technical and regulatory studies in time for WRC03 relating to frequency sharing between systems in the broadcasting-satellite service (sound) and terrestrial services in the band 2535-2655 MHz with a view to avoiding placing undue constraints on either service,
instructs the Radiocommunication Bureau
in its examination of requests for coordination for any broadcasting-satellite service (sound) system using non-GSO satellites in the 2630-2655 MHz band, for which complete Appendix4 coordination information, or notification information, has been received after 2 June 2000, to determine if the power flux-density thresholds given in resolves 2, and taking into account resolves3, are exceeded on the territory of any administration other than the notifying administration and, if so, to inform both the notifying and the affected administrations.
1 that, when applying resolves 2, the Bureau shall use the power flux-density mask in resolves 2; and
– for angles of arrival £ [65°]* [82°]** identify the affected administrations, which have a primary allocation to terrestrial services in the same frequency band and on whose territory the power fluxdensity is exceeded and inform both the notifying and the affected administrations. At the notification stage the lack of any necessary agreement is considered as non-conformity with No. 11.31; or
– for angles of arrival from [65°]* [82°]** to 90°, identify the affected administrations, which have a primary allocation to terrestrial services in the same frequency band and on whose territory the power fluxdensity is exceeded and inform both the notifying and the affected administrations. Each notice shall be examined in the application of No.11.32 and, if appropriate, under No. 11.32A with respect to the probability of harmful interference that may be caused to assignments with which the coordination could not be successfully completed;
2 that, as from 4 July 2003, the Bureau shall apply resolves 4 in its examination of requests for coordination and notifications for any broadcasting-satellite service (sound) systems using non-GSO satellites in the 2630-2655 MHz band, for which complete Appendix 4 coordination information, or notification information, has been received after 2 June 2000.
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CMR03/368-E
APPENDIX 5 (WRC-2000)
MOD
TABLE 5-1 (continued)
Referenceof
Article 9 / Case / Frequency bands
(and Region) of the service
for which coordination
is sought / Threshold/condition / Calculation
method / Remarks
No. 9.11
GSO,
non-GSO/
terrestrial / A space station in the broadcasting-satellite service (BSS) in any band shared on an equal primary basis with terrestrial services and where the BSS is not subject to a Plan, in respect of terrestrial services / 620-790 MHz
1 452-1 492 MHz
2 310-2 360 MHz
2 52035-2 655 MHz
(Nos. 5.418 and 5.418bis)
2 655-2 670 MHz
12.5-12.75 GHz (Region3)
17.3-17.8 GHz (Region 2)
21.4-22 GHz (Region 1 and 3)
74-76 GHz / Bandwidths overlap; Resolution 539 (WRC2000) also appliesThe detailed conditions of the application of No. 9.11 in the bands 2 630-2 655 MHz and 2605-2630MHz are provided in Resolution 539 (Rev.WRC-03) for non-GSO BSS (sound) systems pursuant to Nos. 5.418 and 5.418bis, and in Nos. 5.418 and 5.418bis for GSO BSS (sound) networks pursuant to those provisions. Resolution [COM4/5] (WRC03) applies in the 620-790MHz band / Check by using the assigned frequencies and bandwidths
Note to the Plenary – The modifications to Table 5-1 take account of the decisions of ad hoc Group5 of the Plenary and the proposal on page 3 of Document 320 and the proposal on page 3 of Document 259.
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[1] These values relate to the power flux-density and angles of arrival which would be obtained under free-space propagation conditions.