Preliminary Views on Wrc-15 Agenda Items

APG15-2/INP-20

Japan

Preliminary views on wrc-15 agenda items

7, 9.1.2 AND 9.1.8

Agenda item 7 - to consider possible changes in response to Resolution 86 (Rev. Marrakesh, 2002) of the Plenipotentiary Conference: "Advance publication, coordination, notification and recording procedures for frequency assignments pertaining to satellite networks", in accordance with Resolution 86 (Rev.WRC-07);

1 Background

Resolution 86 (Rev. WRC-07) resolves that WRC should consider any proposals which deal with deficiencies and improvements in the advance publication, coordination, notification and recording procedures of the Radio Regulations for frequency assignments pertaining to space services which have either been identified by the Board and included in the Rules of Procedure or which have been identified by administrations or by the Radiocommunication Bureau, as appropriate. The resolution also resolves to invite WRC to ensure that these procedures, and the related appendices of the Radio Regulations reflect the latest technologies, as far as possible.

ITU-R WP4A is the responsible group on the technical aspect, and ITU-RSpecial Committee (SC) is the responsible group on the regulatory and procedural aspects of this agenda, respectively.

2 Japanese View

Japan continues to support the improvement for the coordination procedure of satellite network filings which will remedy the deficiencies of the procedures and reduce the workload of the Administrations and the BR. However, Japan is of the view that the drastic revision and restructuring of Articles 9 and 11 of the RR which makes the actual operation of the satellite networks by each Administration difficult or cause unexpected impact on and inconsistencies with other provisions of the RR would not be appropriate.

Agenda item 9 –to consider and approve the Report of the Director of the Radiocommunication Bureau, in accordance with Article 7 of the Convention:

9.1on the activities of the Radiocommunication Sector since WRC 12;

Issue 9.1.2 –studies on possible reduction of the coordination arc and technical criteria usedin application of No. 9.41 in respect of coordination under No. 9.7, in accordance with Resolution 756 (WRC-12);

(WP4A (technical and regulatory aspects), SC(regulatory and procedural aspects)/ -)

1 Background

The use of orbit spectrum resources is increasing and the difficulties in getting access for new satellite networks is increasing accordingly. The situation is in particular severe in some bands that are commonly used by many operational satellites, but there are also difficulties due to many submissions for satellite networks in other frequency bands.

For these reasons, improved ways to accommodate new networks and facilitating more efficient use of the spectrum resources are sought while at the same time ensuring adequate protection of networks operating in accordance with the Radio Regulations.

WRC-12 did reduce the coordination arc in these bands somewhat, but did not decide in respect of mechanisms to make coordination unnecessary outside the coordination arc or for networks with different coverages. WRC-12 furthermore decided that these two issues would be further studied in preparations for WRC-15 and in its Resolution 756 (WRC-12)resolves to invite ITU-R:

“1to carry out studies to examine the effectiveness and appropriateness of the current criterion (ΔT/T > 6%) used in the application of No. 9.41 and consider any other possible alternatives (including the alternatives outlined in Annexes 1 and 2 to this Resolution), as appropriate, for the bands referred to in recognizing e);

2to study whether additional reductions in the coordination arcs in RR Appendix 5 (Rev.WRC-12) are appropriate for the 6/4 GHz and 14/10/11/12 GHz frequency bands, and whether it is appropriate to reduce the coordination arc in the 30/20 GHz band,”

The Director BR is then instructed to include the results of these studies in his Report to WRC-15.

Japan has been contributing actively to the study at ITU-R WP4A.

2 Japanese View

Japan is of the view that careful consideration should be made taking into consideration the work being conducted on this subject by the ITU-R WP4A.

Issue 9.1.8 –to study on regulatory aspects fornanosatellites and picosatellites, in accordance with Resolution 757 (WRC-12);

1 Background

Item 9.1.8 is the preliminary agenda of WRC-18.The Director of Radiocommunication Bureau was instructed by WRC-12 to report to WRC-15 on the results of the studies that examine the procedures for notifying space networks and consider possible modifications to

enable the deployment and operation of nanosatellites and picosatellites, taking into account the

short development time, short mission time and unique orbital characteristics.

As for ITU-R, WP7B is the responsible group and WP4A, SC, WP5A and WP6A are the concerned groupsfor this agenda item.

2 Japanese View

Japan supports the study for examinationof the procedures for notifyingnano/picosatellite networks.

However, Japan is of the view that the procedures for nano/picosatelliteshould not cause unexpected impact on and inconsistencies with other provisions of the RR, such as the current coordination procedures for satellite network other than nano/picosatellite. Also, the modification of the regulatory procedure for notifying nano/picosatellite networks should be madeso as not to cause unacceptable interference into or put additional burden on existing and future radio stations which are operated in accordance with the RR.

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