Mr. Donald Abelson

Chief of the International Bureau

Federal Communications Commission

445 12th Street SW

Washington, D.C. 20554

Dear Mr. Abelson:

The National Telecommunications and Information Administration (NTIA),
on behalf of the Executive Branch Agencies, have approved the release of
an additional draft Executive Branch proposal for WRC-07. This proposal
considers the federal agency inputs toward the development of U.S.
Proposals for WRC-07.

The enclosed document contains a draft proposal for agenda item 1.12,
which addresses the coordination of the radionavigation-satellite
service (space-to-space) in the bands 1 215-1 300 MHz and 1 559-1 610
MHz. This proposal is forwarded for your consideration and review by
your WRC-07 Advisory Committee. Jim Vorhies of my staff is the primary
contact for NTIA.

> Sincerely,
>
> (Original signed by Karl Nebbia February 17, 2006)
>
> Fredrick R. Wentland
>
> Associate Administrator
>
> Office of Spectrum Management

Enclosure

# United States of America

## DRAFT PROPOSAL FOR THE WORK OF THE CONFERENCE

**Agenda Item 1.12**: 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 (WRC-03)**;

***Coordination of the radionavigation-satellite service
(space-to-space) in the bands 1 215-1 300 MHz and 1 559-1 610 MHz***

**Background Information**: The scope and criteria to be used for the
implementation of Resolution **86 (Rev. Marrakesh, 2002)** of the
Plenipotentiary Conference by future world radiocommunication
conferences (WRCs) is established in Resolution **86 (WRC‑03)**.
*Resolves 1* of Resolution **86 (WRC-03)** relates to the consideration
of proposals dealing with deficiencies in the advance publication,
coordination and notification procedures of the Radio Regulations for
space services, and Resolves 2 relates to consideration of proposals
intended to transform the content of the Rules of Procedure into
regulatory text.

WRC-2000 added the space-to-space direction to the existing
radionavigation-satellite service (RNSS) (space-to-Earth) allocations in
the bands 1 215-1 300 MHz and 1 559-1 610 MHz, along with footnote
**5.329A**. WRC-03 added footnote **5.328B**, which applied coordination
between two non-GSO RNSS systems and between non-GSO and GSO RNSS
systems in the bands 1 164-1 300 MHz, 1 559-1 610 MHz and 5 010-5 030
MHz under Nos. **9.12**, **9.12A** and **9.13** after 1 January 2005,
without specifying direction (i.e., space-to-Earth or space-to-space).

No. **9.11A** applies the coordination provisions of Nos. **9.12** to
**9.16** where the requirement to coordinate is included in a footnote
to the Table of Frequency Allocations referring to No. **9.11A**. Since
WRC-2000, the Rules of Procedure (RoP), issued by the Radio Regulations
Board (RRB), rather than the Radio Regulations have defined the services
and frequency bands for which the coordination procedure under
No. **9.11A** is required. The RRB considered the application of
No. **9.11A** to the bands given in No. **5.329A** (i.e., 1 215-1 300
and 1 559-1 610 MHz ) and interpreted the Regulations as excluding RNSS
(space-to-space) assignments in the bands given in No. **5.329A** from
any obligation to coordinate with other services and with RNSS
(space-to-Earth), but as obliging these RNSS (space-to-space)
assignments to coordinate with each other.

In addition, many RNSS (space-to-space) network assignments are
receive-only in the bands 1215-1 300 MHz and 1 559-1 610 MHz. Resolution
**610 (WRC-03)**, as referenced in No. **5.328B**, requires
administrations to provide evidence of binding agreements for the
manufacture, procurement, and launch of RNSS systems and networks. This
resolution was intended to aid bilateral coordination between
transmitting RNSS systems and networks by ensuring such systems are
either in operation or in the process of being implemented. Requiring
Resolution **610 (WRC-03)** data for receiving space stations is
unnecessary.

Therefore, modifications to No. **5.329A** and No. **5.328B** are needed
to reflect the RRB decision that requires RNSS (space-to-space) to
coordinate only with other RNSS (space-to-space) but not with other
services or with RNSS (space-to-Earth), and to remove Resolution **610
(WRC-03)** obligations from RNSS receiving space stations.

**Proposal**

USA/ /1 MOD

**5.329A** Use of systems in the radionavigation-satellite service
(space-to-space) operating in the bands 1 215-1 300 MHz and 1 559-1 610
MHz is not intended to provide safety service applications, and shall
not impose any additional constraints on radionavigation-satellite
service (space-to-Earth) systems or on other services operating in
accordance with the Table.

**Reasons**: To clarify that "other systems" in No. **5.329A** refers to
the radionavigation-satellite service (space-to-Earth) and that
"services" refers to services other than the radionavigation-satellite
service.

**USA/ /2 MOD**

**5.328B** The use of the bands 1 164-1 300 MHz, 1 559-1 610 MHz and
5 010-5 030 MHz by systems and networks in the radionavigation-satellite
service for which complete coordination or notification information, as
appropriate, is received by the Radiocommunication Bureau after 1
January 2005 is subject to the application of the provisions of Nos.
**9.12**, **9.12A** and **9.13**. As a consequence of No. **5.329A**,
for systems or networks in the radionavigation-satellite service
(space-to-space) in the bands 1 215-1 300 MHz and 1 559-1 610 MHz, the
application of the provisions of Nos. **9.12**, **9.12A** and **9.13**
is only with respect to other systems or networks in the
radionavigation-satellite service (space-to-space). Resolution **610
(WRC-03)** shall also apply [to transmitting space
stations]{.underline}.

**Reasons:** To make it clear that the application of the coordination
procedure in Nos**. 9.12**, **9.12A** and **9.13** is only with respect
to other radionavigation-satellite service (space-to-space) in the bands
1 215-1 300 MHz and 1 559-1 610 MHz and to limit the application of
Resolution **610 (WRC-03)** to transmitting space stations.

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