# United States of America

## DRAFT PROPOSAL FOR THE WORK OF THE CONFERENCE[^1]

**Agenda Item 1.6 (Res. 414)**: to consider additional allocations for
the aeronautical mobile (R) service in parts of the bands between
108 MHz and 6 GHz, in accordance with Resolution **414 (WRC‑03)** and,
to study current satellite frequency allocations, that will support the
modernization of civil aviation telecommunication systems, taking into
account Resolution **415 (WRC‑03)**;

**Background Information:** This proposal considers additional
allocations for the aeronautical mobile (R) service (AM(R)S ) in parts
of the bands between 108 MHz and 6 GHz, in accordance with
Resolution** 414 (WRC‑03)**.

Existing AM(R)S bands are nearing saturation in high traffic areas. In
addition, new applications and concepts in air traffic management put
further pressure on existing AM(R)S bands. Resolution
**414** **(WRC-03)** states that new technologies to support air
navigation may not conform to the definition of aeronautical
radionavigation in the Radio Regulations. WRC-03 provided a mechanism to
implement these new aviation technologies by adding AM(R)S use in the
band 108 - 117.975 MHz by footnote **5.197A** in accordance with
Resolution **413** **(WRC-03)**. [^2] One emerging application driving
requirements for new AM(R)S spectrum is the integration of command and
control for unmanned aircraft (UA) into air traffic services (ATS)
airspace. Conversely, AM(R)S spectrum is not appropriate for UA payload
data use, such as downlinking information and operational data from the
UA.

ITU-R Working Party 8B (WP 8B) and the International Civil Aviation
Organization (ICAO) developed a draft operational concept, and
technology selection criteria and procedures for new aviation
technology. WP 8B and ICAO determined that the new aviation systems
require two distinct categories of AM(R)S spectrum. The first category
for surface applications could support high data throughput over
moderate transmission distances. There is a high degree of reuse of this
spectrum. For surface applications, ICAO and WP8B recommended 5 091 - 5
150 MHz as a suitable band. ITU-R has studied the band 5 091-5 150 MHz
under agenda item 1.5 for the purpose of aeronautical mobile telemetry
applications. These studies have shown that AM(R)S can share with both
the existing fixed satellite service and possible aeronautical telemetry
(AMT) systems in the band 5 091-5 150 MHz.

The second category for bidirectional air to ground applications could
support a moderate data throughput over longer propagation distances out
to radio line-of-sight. These applications require a number of distinct
channels to allow for sector-to-sector assignments. For radio
line-of-sight applications, ICAO and WP 8B recommended 960 - 1 024 MHz
as a suitable band. The provisions of the new footnote
No. **5.328\[C\]** and resolution AM(R)S contained in this proposal
should enter into force on \[10\] November 2007. The provisional
application of this footnote and associated resolution should be
contained in a WRC resolution similar to Resolution **96** **(WRC-03)**
on the provisional application of certain provisions of the Radio
Regulations as revised by WRC-03 and abrogation of certain resolutions
and recommendations.

The 5 091-5 150 MHz band is used by the fixed-satellite service to
provide feeder uplinks for non-geostationary mobile-satellite service
systems. Studies within WP8B have shown that those feeder links would be
protected from interference from new AM(R)S applications proposed for
this band. No priority over other uses in this band is established for
the AM(R)S uses.

**Proposal:**

USA/ / 1 MOD

890-1 300 MHz

+-----------------------+-----------------------+-----------------------+
| Allocation to         |                       |                       |
| services              |                       |                       |
+-----------------------+-----------------------+-----------------------+
| Region 1              | Region 2              | Region 3              |
+-----------------------+-----------------------+-----------------------+
| **890-942**           | **890-902**           | **890-942**           |
|                       |                       |                       |
| FIXED                 | FIXED                 | FIXED                 |
|                       |                       |                       |
| MOBILE except         | MOBILE except         | MOBILE 5.317A         |
| aeronautical mobile   | aeronautical mobile   |                       |
| 5.317A                | 5.317A                | BROADCASTING          |
|                       |                       |                       |
| BROADCASTING 5.322    | Radiolocation         | Radiolocation         |
|                       |                       |                       |
| Radiolocation         | 5.318 5.325           |                       |
+-----------------------+-----------------------+-----------------------+
|                       | **902-928**           |                       |
|                       |                       |                       |
|                       | FIXED                 |                       |
|                       |                       |                       |
|                       | Amateur               |                       |
|                       |                       |                       |
|                       | Mobile except         |                       |
|                       | aeronautical mobile   |                       |
|                       | 5.325A                |                       |
|                       |                       |                       |
|                       | Radiolocation         |                       |
|                       |                       |                       |
|                       | 5.150 5.325 5.326     |                       |
+-----------------------+-----------------------+-----------------------+
|                       | **928-942**           |                       |
|                       |                       |                       |
|                       | FIXED                 |                       |
|                       |                       |                       |
|                       | MOBILE except         |                       |
|                       | aeronautical mobile   |                       |
|                       | 5.317A                |                       |
|                       |                       |                       |
|                       | Radiolocation         |                       |
+-----------------------+-----------------------+-----------------------+
| 5.323                 | 5.325                 | 5.327                 |
+-----------------------+-----------------------+-----------------------+
| **942-960**           | **942-960**           | **942-960**           |
|                       |                       |                       |
| FIXED                 | FIXED                 | FIXED                 |
|                       |                       |                       |
| MOBILE except         | MOBILE 5.317A         | MOBILE 5.317A         |
| aeronautical mobile   |                       |                       |
| 5.317A                |                       | BROADCASTING          |
|                       |                       |                       |
| BROADCASTING 5.322    |                       |                       |
+-----------------------+-----------------------+-----------------------+
| 5.323                 |                       | 5.320                 |
+-----------------------+-----------------------+-----------------------+
| **960-1 164**         |                       |                       |
| AERONAUTICAL          |                       |                       |
| RADIONAVIGATION 5.328 |                       |                       |
|                       |                       |                       |
| **ADD 5.328\[C\]**    |                       |                       |
+-----------------------+-----------------------+-----------------------+

**Reasons:** To provide allocations to support evolving AM(R)S
applications.

USA/ / 2 MOD

4 800-5 570 MHz

+----------------------+----------------------+-----------------------+
| Allocation to        |                      |                       |
| services             |                      |                       |
+----------------------+----------------------+-----------------------+
| Region 1             | Region 2             | Region 3              |
+----------------------+----------------------+-----------------------+
| **4 800-4 990**      |                      |                       |
| FIXED                |                      |                       |
|                      |                      |                       |
| MOBILE 5.442         |                      |                       |
|                      |                      |                       |
| Radio astronomy      |                      |                       |
|                      |                      |                       |
| 5.149 5.339 5.443    |                      |                       |
+----------------------+----------------------+-----------------------+
| **4 990-5 000**      |                      |                       |
| FIXED                |                      |                       |
|                      |                      |                       |
| MOBILE except        |                      |                       |
| aeronautical mobile  |                      |                       |
|                      |                      |                       |
| RADIO ASTRONOMY      |                      |                       |
|                      |                      |                       |
| Space research       |                      |                       |
| (passive)            |                      |                       |
|                      |                      |                       |
| 5.149                |                      |                       |
+----------------------+----------------------+-----------------------+
| **5 000-5 010**      |                      |                       |
| AERONAUTICAL         |                      |                       |
| RADIONAVIGATION      |                      |                       |
|                      |                      |                       |
| RADIO                |                      |                       |
| NAVIGATION-SATELLITE |                      |                       |
| (Earth-to-space)     |                      |                       |
|                      |                      |                       |
| 5.367                |                      |                       |
+----------------------+----------------------+-----------------------+
| **5 010-5 030**      |                      |                       |
| AERONAUTICAL         |                      |                       |
| RADIONAVIGATION      |                      |                       |
|                      |                      |                       |
| RADIO                |                      |                       |
| NAVIGATION-SATELLITE |                      |                       |
| (space-to-Earth)     |                      |                       |
| (space-space)\       |                      |                       |
| 5.328B 5.443B 5.367  |                      |                       |
+----------------------+----------------------+-----------------------+
| **5 030-5 150**      |                      |                       |
| AERONAUTICAL         |                      |                       |
| RADIONAVIGATION      |                      |                       |
|                      |                      |                       |
| 5.367 5.444 5.444A   |                      |                       |
| **ADD 5.444\[B\]**   |                      |                       |
+----------------------+----------------------+-----------------------+

**Reasons: To provide allocations to support evolving AM(R)S
applications.**

USA/ /3 ADD

**5.328\[C\]** The band 960 - 1 024 MHz is also allocated to the
aeronautical mobile (R) service on a primary basis, limited to systems
operating in accordance with recognized international aeronautical
standards. Such use shall not cause harmful interference to nor claim
protection from stations operating in the aeronautical radionavigation
service operating in accordance with international aeronautical
standards. Such use also shall be in accordance with Resolution
**\[AM(R)S 960\]**.

**Reasons:** To provide allocations to support evolving AM(R)S
applications. Compatibility with regard to existing aeronautical
radionavigation service (ARNS) systems will be addressed as a part of
standards development for the new AM(R)S system.

USA/ /4 ADD

**5.444\[B\]** The band 5 091-5 150 MHz is also allocated to the
aeronautical mobile (R) service on a primary basis, limited to systems
operating in accordance with recognized international aeronautical
standards. Such use shall also be in accordance with Resolution
**\[AMRS-FSS\]**.

**Reasons:** To provide allocations to support evolving AM(R)S
applications. Compatibility with regard to existing aeronautical
radionavigation service (ARNS) systems will be addressed as a part of
standards development for the new AM(R)S system. The 5 091-5 150 MHz
band is used by the fixed-satellite service to provide feeder uplinks
for non-geostationary mobile-satellite systems (**5.444A**). ITU-R
studies show that these feederlinks would be protected for interference
from new AM(R)S applications proposed for this band. No priority over
the FSS in this band is established for the AM(R)S uses.

USA/ /5 ADD

Draft RESOLUTION \[AM(R)S 960\] (WRC-07)

Use of the band 960-1 024 MHz by aeronautical services

The World Radiocommunication Conference (Geneva, 2007),

considering

*a)* the current allocation of the frequency band 960-1 164 MHz to the
aeronautical radionavigation service (ARNS);

*b)* the use of the band 960 - 1 215 MHz by the aeronautical
radionavigation service is reserved on a worldwide basis for the
operation and development of airborne electronic aids to air navigation
and any directly associated ground-based facilities per No. **5.328**;

*c)* that new technologies are being developed to support communications
and air navigation, including airborne and ground surveillance
applications;

*d)* that new applications and concepts in air traffic management which
are data intensive are being developed,

recognizing

*a)* that precedence must be given to the ARNS operating in the
frequency band 960 -1 164 MHz;

*b)* thatAnnex 10 of the Convention of the International Civil Aviation
Organization (ICAO) contains standards and recommended practices (SARPs)
for aeronautical radionavigtion and radiocommunication systems used by
international civil aviation;

*c)* that all compatibility issues between the ICAO standard Universal
Access Transceiver (UAT) and other systems which operate in the band
960-1 024 MHz have been addressed within ICAO,

noting

that excluding the system identified in *recognizing c)*, no
compatibility criteria currently exist between AM(R)S systems proposed
for operations in the frequency band 960 - 1 024 MHz and the existing
ARNS aeronautical systems in the band,

resolves

that prior to operating in the frequency band 960-1 024 MHz any AM(R)S
systems shall have Standards and Recommended Practices requirements
published in Annex 10 of the ICAO Convention on International Civil
Aviation, and that those requirements will ensure compatibility with and
not constrain the future development of ARNS systems operating in
accordance with international (ICAO) standards;

instructs the Secretary-General

to bring this Resolution to the attention of ICAO.

**Reasons:** A resolution is needed to indicate the systems allowed
under the AM(R)S allocation in the 960-1 024 MHz band and to explain the
role of ICAO in developing standards for compatibility between ARNS and
AMRS in this band.

USA/ /6 ADD

Insert in the resolves of Resolution **\[WRC-07\]** Provisional
application of certain provisions of the Radio Regulations as revised by
WRC-07 and abrogation of certain Resolutions and Recommendations:

**RR 5.328\[C\]** and Resolution **AM(R) 960** shall provisionally apply
as of \[10\] November 2007.

**Reasons:** Because Resolution and RR **5.328\[C\]** address
compatibility issues that need to be implemented prior to adding AM(R)S
uses to the band, the provisions of the new footnote should enter into
force on \[10\] November 2007. The provisional application of this
footnote should be inserted in the WRC-07 resolution similar to
Resolution **96 (WRC-03)** on the provisional application of certain
provisions of the Radio Regulations as revised by WRC-03 and abrogation
of certain resolutions and recommendations.

USA/ /7 ADD

DRAFT RESOLUTION \[AMRS-FSS\] (WRC-07)

Considerations for Sharing the band 5091-5150 MHz by the aeronautical
mobile (R) service and fixed-satellite service

The World Radiocommunication Conference (Geneva, 2007),

considering

*a)* the current allocation of the 5 091 - 5 150 MHz band to the
fixed-satellite (FSS) (Earth-to-space), which is limited to feeder links
of non-geostationary satellite (non-GSO) systems in the mobile-satellite
service (MSS)) services;

*b)* the band 5 000-5 150 MHz is also allocated to the aeronautical
mobile-satellite (R) service on a primary basis, subject to agreement
obtained under No. **9.21**;

*c)* this conference has allocated the 5 091-5 150 MHz band for the
aeronautical mobile service aeronautical mobile (R) service limited to
systems operating in accordance with recognized international
aeronautical standards,

recognizing

*a)* that precedence is to be given to the microwave landing system
(MLS) in accordance with No. **5.444** in the frequency band 5 030-5 150
MHz;

*b)* that Resolution **114 (WRC-03)** applies to the sharing conditions
between the fixed-satellite and aeronautical radionavigation service in
the 5 091-5 150 MHz band;

*c)* that the International Civil Aviation Organization publishes
standards for aeronautical mobile (R) systems,

noting

that ITU-R studies describe methods for ensuring compatibility between
the AM(R)S and FSS operating in the band 5 091-5 150 MHz,

resolves

1 that administrations, in making assignments to the aeronautical mobile
(R) service, shall take into account International Civil Aviation (ICAO)
Standards and Recommended Practices (SARPS) for AM(R)S systems operating
in this band,

2 that the coordination distance with respect to stations in the fixed
satellite service (FSS) operating in the band 5091-5150 MHz shall be
based on ensuring that the received signal at the AM(R)S station from
the FSS transmission does not exceed -143 dBW/MHz, where the required
basic transmission loss shall be determined using the methods described
in Recommendations ITU-R P.525 and ITU-R P.526.

USA/ /8 NOC

RESOLUTION 413 (WRC‑03)

Use of the band 108-117.975 MHz by Aeronautical Service

**Reasons:** No additional allocations are being proposed that require
Resolution **413** to be modified to ensure compatibility with existing
services in lower adjacent band. If such proposals are made by the WRC
it would be appropriate to review Resolution **413**.

[^1]: This is a revision to an earlier United States proposal on
    Resolution 414.

[^2]: Note that AM(R)S allocations in the band 108-117.975 MHz are only
    being considered by the U.S. for new aviation navigation
    surveillance technology consistent with No. **5.197A**.