DA 05-2481

September 21, 2005

**THE FCC'S ADVISORY COMMITTEE FOR THE**

**2007 WORLD RADIOCOMMUNICATION CONFERENCE APPROVES**

**RECOMMENDATIONS ON WRC-07 ISSUES**

**IB Docket No. 04-286**

On September 14, 2005, the World Radiocommunication Conference Advisory
Committee (WRC-07 Advisory Committee) approved recommendations to the
Commission on a number of issues that will be considered by the 2007
World Radiocommunication Conference (WRC-07). The WRC-07 Advisory
Committee was established by the Commission in January 2004 to assist it
in the development of proposals for WRC-07. To that end, the WRC-07
Advisory Committee has forwarded the recommendations it has developed
since the beginning of 2004 to the Commission for consideration. We
appreciate the substantial amount of work that the WRC-07 Advisory
Committee has put into developing its recommendations. We have attached
to this Public Notice the WRC-07 Advisory Committee's recommendations
that were approved at the September 14, 2005 meeting and request
comments on 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 the attached WRC-07 Advisory Committee
recommendations. We seek comments on the recommendations that appear in
all of the WRC-07 Advisory Committee documents and on our initial
impressions.

In addition, the National Telecommunications and Information
Administration (NTIA) has provided to the Commission a draft proposal
that has been developed by the Executive Branch Agencies. We also
request comments on this document.

The comments provided will assist the FCC in its upcoming consultations
with the U.S. Department of State and NTIA in the development of U.S.
positions for WRC-07. The recommendations that are attached to this
Public Notice may evolve in the course of interagency discussions as we
approach WRC‑07 and, therefore, do not constitute a final U.S.
Government position on any issue.

The complete text of these recommendations is also available in the
FCC's Reference Information Center, Room CY-A257, 445 12^th^ Street, SW,
Washington, DC 20554 or by accessing the FCC's WRC-07 world wide web
site at: <http://www.fcc.gov/wrc-07>. Comments on the recommendations
may be filed by referencing IB Docket 04-286 using the Commission's
Electronic Comment Filing System (ECFS) or by filing paper copies.
Parties are encouraged to file electronically by following the
instructions at: <http://www.fcc.gov/cgb/ecfs> Parties who choose to
file paper copies only should submit an original and four copies of each
filing. Guidelines and address for paper filings are available at:
<http://www.fcc.gov/osec> . In addition, please submit one copy of your
comments electronically or by paper to Alexander Roytblat, FCC WRC-07
Director, Federal Communications Commission, Room 6-A865, 445 12^th^
Street, SW, Washington, DC 20554; e-mail: WRC07@fcc.gov. Comments should
refer to IB Docket No. 04-286 and to specific recommendations by
document number. The deadline for comments on the recommendations is
October 3, 2005. It is necessary that comments be received by October
3, 2005 in order to give us enough time to consider them in the
formulation of the U.S. positions for the upcoming meeting of the
Inter-American Telecommunication Commission, Permanent Consultative
Committee II, WRC-07 Working Group that is scheduled for October 24-28,
2005. 

I.  **Recommendations by the Advisory Committee for the 2007 World
    Radiocommunication Conference:**

**[INFORMAL WORKING GROUP 1 (IWG-1)]{.underline}**

**[Terrestrial and Space Science Services]{.underline}**

**Document WAC/063(14.09.05):**

DRAFT PROPOSAL FOR THE WORK OF THE CONFERENCE

Agenda Item 1.2 (Res. 746, resolves 1) to invite ITU-R to conduct
sharing analyses between geostationary meteorological satellites
operating in the space-to-Earth direction and the fixed, fixed-satellite
and mobile services in the band 18.0-18.4 GHz to define appropriate
sharing criteria with a view to extending the current 18.1-18.3 GHz
geostationary meteorological satellite allocation in the space-to-Earth
direction to 300 MHz of contiguous spectrum.

# Background Information

Presently the meteorological satellite (MetSat) service is allocated by
footnote 5.519 in the band 18.1-18.3 GHz. The band is allocated on a
primary basis to the Fixed Satellite Service (FSS), the Fixed Service
and the Mobile Service in all three Regions and these allocations also
exist for these same services in the band 17.8-18.1 GHz in all regions.
In both bands the FSS is allocated in both the space-to-Earth and
Earth-to-space directions. Additionally, in 18.1-18.4 GHz band the FSS
(space-to-Earth) allocation has associated with it Nos. 5.484A and
5.516B. The first provision applies to non-Geostationary satellite
systems. However, the latter provision states that the band 18.3-19.3
GHz has been identified for use by high-density applications in the
Fixed Satellite Service in Region 2.

WP-7B has been the lead ITU-R group concerned with analyzing the sharing
potential with other services in the band and it has exchanged several
Liaison Statements with WP-4A. As a consequence of the information
provided by WP-4A, those involved in the design of the next generation
meteorological satellite service have optimized the design to maximize
the level of homogeneity between FSS and Metsat systems. It is
envisioned that this would maximize compatibility and facilitate
coordination for operation of both type of systems in the space-to-Earth
direction.

In accordance with No. 5.516 the band 18.0-18.1 GHz in the
Earth-to-space direction is used for feeder links for the Broadcasting
Satellite Service. Compatibility studies have been performed to estimate
the typical required separation distances in reverse band sharing
situations between receiving MetSat earth stations and transmitting BSS
feeder uplink stations. In the worst case, it has been determined that
around 40 km separation is required. Therefore it is expected that with
some care in situating the limited number of MetSat receive stations
international coordination would rarely be required.

In Region 2, GSO FSS satellite networks in the band 18.3-18.4 GHz have
been developed and are being deployed which, as a consequence of a 2
degree spacing requirement, will employ earth stations with a minimum
diameter on the order of 0.65 meters. Such earth stations are being
deployed ubiquitously under "blanket" authorization regulations. Under
such an arrangement, these "HDFSS" type earth stations may be deployed
anywhere without a requirement for coordination. In addition, it is
expected that the number of systems being deployed will grow
significantly over the next several years. This type of implementation
could lead to possible concerns or difficulties in identifying suitable
locations for MetSat satellites and/or receive stations.

While the expected design of the MetSat satellite networks envisioned
for operation in the 300 MHz wide band appears to be generally
compatible with FSS systems being implemented, it would appear that, for
Region 2, operating MetSat systems below 18.3 GHz would avoid several
potential difficulties. Given the desire to have a common MetSat
allocation in all three Regions, a global allocation of 18.0-18.3 GHz is
proposed. In addition, ITU-R studies have shown that, in conjunction
with extending the MetSat allocation, extending the existing FSS
coordination arc principle in this band to the case of MetSat systems
coordinating with FSS networks would help to alleviate unnecessary
coordination exercises between these systems. As such, a modification to
Table 5-1 of Appendix 5 to include this change is also proposed.

**Proposal:**

# USA/ /1 MOD

519. **Additional allocation : the band 18.[0]{.underline} ~~1~~-18.3
     GHz is also allocated to the meteorological-satellite service
     (space-to-Earth) on a primary basis. Its use is limited to
     geostationary satellites and shall be in accordance with the
     provisions of Article 21, Table 21-4.**

**Reasons:** Adding the additional 100 MHz in the band 18.0-18-1 GHz
will provide greater flexibility and assurance of protection for the
meteorological satellite service.

**USA/ /2**

15.4-18.4 GHz

+-----------------------+-----------------------+-----------------------+
| Allocation to         |                       |                       |
| services              |                       |                       |
+-----------------------+-----------------------+-----------------------+
| Region 1              | Region 2              | Region 3              |
+-----------------------+-----------------------+-----------------------+
| 15.4-15.43            |                       |                       |
| AERONAUTICAL          |                       |                       |
| RADIONAVIGATION       |                       |                       |
|                       |                       |                       |
| 5.511D                |                       |                       |
+-----------------------+-----------------------+-----------------------+
| 15.43-15.63           |                       |                       |
| FIXED-SATELLITE       |                       |                       |
| (Earth-to-space)      |                       |                       |
| 5.511A                |                       |                       |
|                       |                       |                       |
| AERONAUTICAL          |                       |                       |
| RADIONAVIGATION       |                       |                       |
|                       |                       |                       |
| 5.511C                |                       |                       |
+-----------------------+-----------------------+-----------------------+
| 15.63-15.7            |                       |                       |
| AERONAUTICAL          |                       |                       |
| RADIONAVIGATION       |                       |                       |
|                       |                       |                       |
| 5.511D                |                       |                       |
+-----------------------+-----------------------+-----------------------+
| 15.7-16.6             |                       |                       |
| RADIOLOCATION         |                       |                       |
|                       |                       |                       |
| 5.512 5.513           |                       |                       |
+-----------------------+-----------------------+-----------------------+
| 16.6-17.1             |                       |                       |
| RADIOLOCATION         |                       |                       |
|                       |                       |                       |
| Space research (deep  |                       |                       |
| space)                |                       |                       |
| (Earth-to-space)      |                       |                       |
|                       |                       |                       |
| 5.512 5.513           |                       |                       |
+-----------------------+-----------------------+-----------------------+
| 17.1-17.2             |                       |                       |
| RADIOLOCATION         |                       |                       |
|                       |                       |                       |
| 5.512 5.513           |                       |                       |
+-----------------------+-----------------------+-----------------------+
| 17.2-17.3 EARTH       |                       |                       |
| EXPLORATION-SATELLITE |                       |                       |
| (active)              |                       |                       |
|                       |                       |                       |
| RADIOLOCATION         |                       |                       |
|                       |                       |                       |
| SPACE RESEARCH        |                       |                       |
| (active)              |                       |                       |
|                       |                       |                       |
| 5.512 5.513 5.513A    |                       |                       |
+-----------------------+-----------------------+-----------------------+
| 17.3-17.7             | 17.3-17.7             | 17.3-17.7             |
|                       |                       |                       |
| FIXED-SATELLITE\      | FIXED-SATELLITE\      | FIXED-SATELLITE\      |
| (Earth-to-space)      | (Earth-to-space)      | (Earth-to-space)      |
| 5.516\                | 5.516                 | 5.516                 |
| (space-to-Earth)      |                       |                       |
| 5.516A 5.516B         | B                     | Radiolocation         |
|                       | ROADCASTING-SATELLITE |                       |
| Radiolocation         |                       |                       |
|                       | Radiolocation         |                       |
+-----------------------+-----------------------+-----------------------+
| 5.514                 | 5.514 5.515 5.517     | 5.514                 |
+-----------------------+-----------------------+-----------------------+
| 17.7-18.1             | 17.7-17.8             | 17.7-18.1             |
|                       |                       |                       |
| FIXED                 | FIXED                 | FIXED                 |
|                       |                       |                       |
| FIXED-SATELLITE\      | FIXED-SATELLITE\      | FIXED-SATELLITE\      |
| (space-to-Earth)      | (space-to-Earth)\     | (space-to-Earth)      |
| 5.484A\               | (Earth-to-space)      | 5.484A\               |
| (Earth-to-space)      | 5.516                 | (Earth-to-space)      |
| 5.516                 |                       | 5.516                 |
|                       | B                     |                       |
| MOBILE                | ROADCASTING-SATELLITE | MOBILE                |
|                       |                       |                       |
| [5.519]{.underline}   | Mobile 5.518          | [5.519]{.underline}   |
|                       |                       |                       |
|                       | 5.515 5.517           |                       |
+-----------------------+-----------------------+-----------------------+
|                       | 17.8-18.1             |                       |
|                       |                       |                       |
|                       | FIXED                 |                       |
|                       |                       |                       |
|                       | FIXED-SATELLITE\      |                       |
|                       | (space-to-Earth)      |                       |
|                       | 5.484A\               |                       |
|                       | (Earth-to-space)      |                       |
|                       | 5.516                 |                       |
|                       |                       |                       |
|                       | MOBILE                |                       |
|                       |                       |                       |
|                       | [5.519]{.underline}   |                       |
+-----------------------+-----------------------+-----------------------+
| 18.1-18.4 FIXED       |                       |                       |
|                       |                       |                       |
| FIXED-SATELLITE       |                       |                       |
| (space-to-Earth)      |                       |                       |
| 5.484A 5.516B\        |                       |                       |
| (Earth-to-space)      |                       |                       |
| 5.520                 |                       |                       |
|                       |                       |                       |
| MOBILE                |                       |                       |
|                       |                       |                       |
| 5.519 5.521           |                       |                       |
+-----------------------+-----------------------+-----------------------+

**Reasons:** Consequential to adding the additional 100 MHz in the band
18.0-18-1 GHz to **No. 5.519**.

# USA/ /2 MOD

TABLE 5-1 (*continued*)     (Rev.WRC‑0[7]{.underline}~~3~~)

+----+-----------+-----------+-----------------+--------+-----------+
| Re | Case      | Frequency | Thre            | Calcul | Remarks   |
| fe |           | bands\    | shold/condition | ation\ |           |
| re |           | (and      |                 | method |           |
| nc |           | Region)   |                 |        |           |
| e\ |           | of the    |                 |        |           |
| o  |           | service\  |                 |        |           |
| f\ |           | for which |                 |        |           |
| A  |           | coor      |                 |        |           |
| rt |           | dination\ |                 |        |           |
| ic |           | is sought |                 |        |           |
| le |           |           |                 |        |           |
| 9  |           |           |                 |        |           |
+====+===========+===========+=================+========+===========+
| N  |           | 3\)       | i\) Bandwidth   |        |           |
| o. |           | 17.7‑20.2 | overlap, and    |        |           |
| ** |           | GHz,\     |                 |        |           |
| 9. |           | (Regions  | ii\) any        |        |           |
| 7\ |           | 2 and     | network in the  |        |           |
| ** |           | 3),\      | FSS and any     |        |           |
| GS |           | 17.3-20.2 | associated      |        |           |
| O/ |           | GHz\      | space operation |        |           |
| GS |           | (         | functions (see  |        |           |
| O\ |           | Region 1) | No. **1.23**)   |        |           |
| (  |           | and\      | with a space    |        |           |
| *c |           | 27.5‑30   | station within  |        |           |
| on |           | GHz       | an orbital arc  |        |           |
| t. |           |           | of  8° of the   |        |           |
| *) |           |           | nominal orbital |        |           |
|    |           |           | position of a   |        |           |
|    |           |           | proposed        |        |           |
|    |           |           | network in the  |        |           |
|    |           |           | FSS             |        |           |
+----+-----------+-----------+-----------------+--------+-----------+
|    |           | [4)       | [i) Bandwidth   |        |           |
|    |           | 18.0-18.3 | overlap,        |        |           |
|    |           | GHz]{.u   | a               |        |           |
|    |           | nderline} | nd]{.underline} |        |           |
|    |           |           |                 |        |           |
|    |           |           | [ii) any        |        |           |
|    |           |           | network in the  |        |           |
|    |           |           | FSS or MetSat   |        |           |
|    |           |           | service and any |        |           |
|    |           |           | associated      |        |           |
|    |           |           | space operation |        |           |
|    |           |           | functions (see  |        |           |
|    |           |           | No. ]{.under    |        |           |
|    |           |           | line}**1.23**[) |        |           |
|    |           |           | with a space    |        |           |
|    |           |           | station within  |        |           |
|    |           |           | an orbital arc  |        |           |
|    |           |           | of  8° of the   |        |           |
|    |           |           | nominal orbital |        |           |
|    |           |           | position of a   |        |           |
|    |           |           | proposed        |        |           |
|    |           |           | network in the  |        |           |
|    |           |           | FSS or MetSat   |        |           |
|    |           |           | servi           |        |           |
|    |           |           | ce]{.underline} |        |           |
+----+-----------+-----------+-----------------+--------+-----------+
|    |           | [5]       | i\) Bandwidth   |        |           |
|    |           | {.underli | overlap, and    |        |           |
|    |           | ne}~~4~~) |                 |        |           |
|    |           | Bands     | ii\) any        |        |           |
|    |           | above     | network in the  |        |           |
|    |           | 17.3 GHz, | FSS and any     |        |           |
|    |           | except    | associated      |        |           |
|    |           | those     | space operation |        |           |
|    |           | defined   | functions (see  |        |           |
|    |           | in § 3)   | No. **1.23**)   |        |           |
|    |           | [and      | with a space    |        |           |
|    |           | 4)]{.u    | station within  |        |           |
|    |           | nderline} | an orbital arc  |        |           |
|    |           |           | of 8° of the    |        |           |
|    |           |           | nominal orbital |        |           |
|    |           |           | position of a   |        |           |
|    |           |           | proposed        |        |           |
|    |           |           | network in the  |        |           |
|    |           |           | FSS (see also   |        |           |
|    |           |           | Resolution      |        |           |
|    |           |           | **901           |        |           |
|    |           |           | (WRC‑03)**)     |        |           |
+----+-----------+-----------+-----------------+--------+-----------+
|    |           | [6]       | i\) Bandwidth   |        |           |
|    |           | {.underli | overlap, and    |        |           |
|    |           | ne}~~5~~) |                 |        |           |
|    |           | Bands     | ii\) any        |        |           |
|    |           | above     | network in the  |        |           |
|    |           | 17.3 GHz  | FSS or BSS, not |        |           |
|    |           |           | subject to a    |        |           |
|    |           |           | Plan, and any   |        |           |
|    |           |           | associated      |        |           |
|    |           |           | space operation |        |           |
|    |           |           | functions (see  |        |           |
|    |           |           | No. **1.23**)   |        |           |
|    |           |           | with a space    |        |           |
|    |           |           | station within  |        |           |
|    |           |           | an orbital arc  |        |           |
|    |           |           | of 16° of the   |        |           |
|    |           |           | nominal orbital |        |           |
|    |           |           | position of a   |        |           |
|    |           |           | proposed        |        |           |
|    |           |           | network in the  |        |           |
|    |           |           | FSS or BSS, not |        |           |
|    |           |           | subject to a    |        |           |
|    |           |           | Plan, except in |        |           |
|    |           |           | the case of a   |        |           |
|    |           |           | network in the  |        |           |
|    |           |           | FSS with        |        |           |
|    |           |           | respect to a    |        |           |
|    |           |           | network in the  |        |           |
|    |           |           | FSS (see also   |        |           |
|    |           |           | R               |        |           |
|    |           |           | esolution **901 |        |           |
|    |           |           | (WRC‑03)**)     |        |           |
+----+-----------+-----------+-----------------+--------+-----------+
| N  |           | [7]       | i\) Bandwidth   | Ap     | In        |
| o. |           | {.underli | overlap, and    | pendix | ap        |
| ** |           | ne}~~6~~) |                 | **8**  | plication |
| 9. |           | All       | ii\) Value of   |        | of        |
| 7\ |           | frequency | *T*/*T* exceeds |        | Article   |
| ** |           | bands,    | 6%              |        | 2A of     |
| GS |           | other     |                 |        | Appendix  |
| O/ |           | than      |                 |        | **30**    |
| GS |           | those in  |                 |        | for the   |
| O\ |           | 1), 2),   |                 |        | space     |
| (  |           | 3), 4)[,  |                 |        | operation |
| *c |           | 5)]{.u    |                 |        | functions |
| on |           | nderline} |                 |        | using the |
| t. |           | and       |                 |        | g         |
| *) |           | [6]{      |                 |        | uardbands |
|    |           | .underlin |                 |        | defined   |
|    |           | e}~~5~~), |                 |        | in § 3.9  |
|    |           | allocated |                 |        | of Annex  |
|    |           | to a      |                 |        | 5 of      |
|    |           | space     |                 |        | Appendi   |
|    |           | service,  |                 |        | x **30**, |
|    |           | and the   |                 |        | the       |
|    |           | bands in  |                 |        | t         |
|    |           | 1), 2),   |                 |        | hreshold/ |
|    |           | 3), 4)[,  |                 |        | condition |
|    |           | 5)]{.u    |                 |        | specified |
|    |           | nderline} |                 |        | for the   |
|    |           | and [6]   |                 |        | FSS in    |
|    |           | {.underli |                 |        | the bands |
|    |           | ne}~~5~~) |                 |        | in 2)     |
|    |           | where the |                 |        | applies.  |
|    |           | radio     |                 |        |           |
|    |           | service   |                 |        | In        |
|    |           | of the    |                 |        | ap        |
|    |           | proposed  |                 |        | plication |
|    |           | network   |                 |        | of        |
|    |           | or        |                 |        | Article   |
|    |           | affected  |                 |        | 2A of     |
|    |           | networks  |                 |        | Appendi   |
|    |           | is other  |                 |        | x **30A** |
|    |           | than the  |                 |        | for the   |
|    |           | space     |                 |        | space     |
|    |           | services  |                 |        | operation |
|    |           | listed in |                 |        | functions |
|    |           | the       |                 |        | using the |
|    |           | t         |                 |        | g         |
|    |           | hreshold/ |                 |        | uardbands |
|    |           | condition |                 |        | defined   |
|    |           | column,   |                 |        | in § 3.1  |
|    |           | or in the |                 |        | and 4.1   |
|    |           | case of   |                 |        | of Annex  |
|    |           | coo       |                 |        | 3 of      |
|    |           | rdination |                 |        | Appendix  |
|    |           | of space  |                 |        |  **30A**, |
|    |           | stations  |                 |        | the       |
|    |           | operating |                 |        | t         |
|    |           | in the    |                 |        | hreshold/ |
|    |           | opposite  |                 |        | condition |
|    |           | direction |                 |        | specified |
|    |           | of        |                 |        | for the   |
|    |           | tra       |                 |        | FSS in    |
|    |           | nsmission |                 |        | the bands |
|    |           |           |                 |        | in 4)     |
|    |           |           |                 |        | applies   |
+----+-----------+-----------+-----------------+--------+-----------+

**Reason:** ITU studies have shown that extending the ±8º coordination
arc, currently applicable to FSS networks in this band, to
meteorological satellite (MetSat) services in this band would reduce the
number of unnecessary coordinations for such systems without
compromising the technical integrity of either the FSS or Metsat
services.

**Document WAC/064(14.09.05):**

# PRELIMINARY VIEWS ON WRC-07

**WRC-07 Agenda Item 1.5:** to consider spectrum requirements and
possible additional spectrum allocations for aeronautical telecommand
and high bit-rate aeronautical telemetry;

**ISSUE**: Obtaining sufficient spectrum to satisfy wideband
aeronautical mobile telemetry requirements and associated telecommand
above 3 GHz, possible sharing with existing services, and continued
protection of incumbent services.

**BACKGROUND**: This agenda item has its origins in efforts undertaken
by the Space Industry prior to WRC-97. The issue was pursued by the U.S.
and other Administrations at WRC-03 and placed on the agenda for WRC-07.
In addition, a CITEL IAP in support of this agenda item was accomplished
and supported by the U.S. and other CITEL Administrations. This agenda
item seeks to address a large and growing shortfall in spectrum
available to conduct aeronautical telemetry. The shortfall is due to
rapidly increasing telemetry data rates associated with the testing of
new technologies. It has been exacerbated by the loss of MS spectrum for
non- aeronautical telemetry applications. Without additional MS
spectrum, aeronautical platform development will be subject to major
delays, escalating costs, and the impairment of global competitiveness
of the aerospace industry (including equipment manufacturers, civilian
space programs and test ranges, airlines, and passengers).

Aeronautical mobile telemetry ("AMT") is an application within the
Mobile Service. While Mobile Service allocations are available for AMT
except where expressly excluded, it is important that, to the extent
possible, additional spectrum be expressly identified/designated as
available for the purpose so as to foster international harmonization of
test equipment. This will enable U.S. manufacturers to offer prospective
customers aircraft with common test equipment packages, and, thus, help
them achieve additional economies in the aircraft life-cycle \-- a very
significant factor as global competition in the aircraft industry
intensifies. Moreover, by making additional spectrum specifically
available for AMT, the world community will not only be adhering to
consistent ITU practice over the past 40 years, but the U.S. flight test
community will have a measure of additional certainty for the enormous
investment in range infrastructure that will be incurred in equipping
new bands for flight test operations.

Within the ITU, the responsible group for this agenda item is WP 8B,
with WP 8A as the contributing group and WP 3M
(point-to-point/earth-space propagation), 4A (orbit/spectrum
utilization), 6S (satellite delivery), SG-7 (science services), and 9D
(fixed service sharing) as interested groups. It is anticipated that WP
8B will deal with all of the aeronautical telemetry studies, and that
its work will be completed in time for Administrations to prepare
proposals.

**U.S. VIEW**: The United States supports further studies in order to
determine how best to satisfy this Agenda Item while recognizing
protection of incumbent services. Upon completion of these studies, the
U.S. will be in a position to make a specific proposal to meet
aeronautical mobile telemetry spectrum requirements. While the U.S. will
continue to evaluate possible regulatory solutions under this agenda
item (including possible new allocations to the Mobile Service), one
approach the U.S. currently contemplates for some of the bands under
study in ITU-R WP 8B would be footnote identification/designation of
existing Mobile Service bands for use by aeronautical telemetry. U.S.
requirements are for telemetry only in the air-to-ground direction
inasmuch as telecommand functions, which are narrowband, can be
accommodated in other spectrum.- Any such identification/designation
would not preclude the use of these bands by other services to which the
bands are allocated on a co-primary basis and, in particular, would not
establish any sort of priority for aeronautical mobile telemetry as
against other co-primary services. Administrations would be urged to
take this into account when considering regulatory provisions in
relation to these bands.

The new spectrum will not be used for the protection of life and
property, and the footnotes will be consistent with this principle. Such
uses will continue to be accommodated by legacy telemetry applications
in MS spectrum in the L and S bands provided for in current footnote
designations (Nos. 5.342, 5.343, and 5.394) in the Radio Regulations.
Hence, aeronautical mobile telemetry applications in other spectrum will
not require the level of protection associated with operations in the L
and S bands.

**[INFORMAL WORKING GROUP 2 (IWG-2)]{.underline}**

**[Satellite Services and HAPS]{.underline}**

**Document WAC/065(14.09.05):**

DRAFT PROPOSAL FOR THE WORK OF THE CONFERENCE

**WRC-07 Agenda Item 1.8 (Res. 122 (Rev.WRC-03) only):** *to consider
the results of ITU-R studies on technical sharing and regulatory
provisions for the application of high altitude platform stations
operating in the bands 27.5-28.35 GHz and 31‑31.3 GHz in response to
Resolution **145** **(WRC‑03),** and for high altitude platform stations
operating in the bands 47.2-47.5 GHz and 47.9-48.2 GHz in response to
Resolution **122 (Rev.WRC‑03)**;*

**ISSUE**: Matters related to the use of the bands 47.2-47.5 GHz and
47.9-48.2 GHz by high altitude platform stations (HAPS) in the fixed
service and by systems and networks in the fixed-satellite service
(FSS).

**Resolution 122 (Rev. WRC-03)**

\"Use of the bands 47.2-47.5 GHz and 47.9-48.2 GHz by high altitude
platform stations (HAPS) in the fixed service and by other services\"

**Background Information**:

The ITU has been considering the implications of HAPS in the fixed
service in the 47.2-47.5 GHz and 47.9-48.2 GHz band since 1997, when
WRC-97 first made provision for the operation of HAPS within the fixed
service. Studies have been ongoing under versions of Resolution 122
since WRC-97.

Resolution **122 (Rev. WRC-2000)** indicated that sharing studies remain
to be completed between the fixed-satellite service (FSS) and HAPS
operations in the FS. Pending the completion of studies, Resolution
**122 (Rev. WRC-2000)** instructed the Radiocommunication Bureau "that
from 22 November 1997, and pending review of the sharing studies in
*considering j)* and review of the notification process by WRC-99, the
Bureau shall accept notices in the bands 47.2-47.5 GHz and 47.9-48.2 GHz
only for high altitude platform stations in the FS and for feeder links
for the broadcasting-satellite service (BSS), shall continue to process
notices for FSS networks (except for feeder links for the
broadcasting-satellite service) for which complete information for
advance publication has been received prior to 27 October 1997, and
shall inform the notifying administrations accordingly***.\"*** In other
words, notices received after 22 November, 1997 from non-BSS feeder link
FSS networks in the 47.2-47.5 GHz and 47.9-48.2 GHz bands have not been
accepted.

Resolution **122 (Rev. WRC-03)** extended the restriction on processing
of notices for FSS networks other than those providing service
exclusively within Region 2. It also instructed the Bureau to maintain,
until a date to be decided by a future WRC, notices concerning HAPS that
were received by the Bureau prior to 22 November 1997 and provisionally
recorded in the Master International Frequency Register. This is a
substantial exception to No. 11.26, which provides that "\[n\]otices
relating to assignments for high altitude platform stations in the fixed
service in the bands 47.2-47.5 GHz and 47.9-48.2 GHz shall reach the
Bureau not earlier than five years before the assignments are brought
into use."

The studies regarding HAPS in the 47.2-47.5 GHz and 47.9-48.2 GHz bands
have been completed and the results are contained in Recommendation
ITU-R SF.1481. This recommendation makes clear that co-frequency
operations between HAPS in the fixed service and FSS networks and
systems are feasible in the 47.2-47.5 GHz and 47.9-48.2 GHz bands, even
while noting that "there may be a need to develop the maximum allowable
power flux-density at satellites on the GSO due to aggregate
interference caused by ground user terminals of high altitude platform
networks." The revision to Resolution **122** that was approved at
WRC-03 confirms that co-existence between HAPS in the FS and the FSS at
47.2-47.5 GHz and 47.9-48.2 GHz is feasible, as administrations were
encouraged to facilitate interservice coordination.

In the WRC-03 revision of Resolution **122**, the ITU-R was invited to
study power limitations on HAPS ground stations to facilitate sharing
with space station receivers, regulatory provisions to address
deployment of HAPS in the FS near country borders, and technical sharing
criteria between HAPS in the FS and both radio astronomy and FSS systems
(taking into account the operational environments and the requirements
of FSS systems). With the exception of interference to and from FSS
spacecraft, and border area coordination matters in the FS, the
deployment of HAPS is a national issue. The issue of interference
between the FSS satellite and HAPS networks can be addressed through
coordination using Articles **9** and **11** of the Radio Regulations.
As a result, Resolution **122** can be suppressed, provided that
reference to the use of Article **9** for HAPS is included in the Radio
Regulations. The Bureau should be instructed to retain all notices
concerning HAPS that are maintained in the MIFR only by virtue of
*instructs the Director of the Radiocommunication Bureau* 1 of
Resolution **122 (Rev. WRC-03)** only until 1 January 2010, unless the
notifying administration earlier informs the Bureau that the notified
assignments have been brought into use.

**Proposal**:

#### 

#### USA/1.8/

**SUP**

RESOLUTION 122 (Rev.WRC-03)

Use of the bands 47.2-47.5 GHz and 47.9-48.2 GHz by high altitude
platform stations (HAPS) in the fixed service and by other services

**Reasons**: Studies called for in relation to HAPS at 47 GHz have been
completed. The Resolution **122** application of the provisions of
Article 9 is proposed for incorporation into the Radio Regulations (see
**USA/1.8/3** below).

#### 

#### USA/1.8/2

#### MOD

**5.552A** The allocation to the fixed service in the bands 47.2-47.5
GHz and 47.9-48.2 GHz is designated for use by high altitude platform
stations. The use of the bands 47.2-47.5 GHz and 47.9-48.2 GHz by high
altitude platforms in the fixed service is subject to the provisions of
[No. **9.22**.]{.underline} ~~Resolution **122 (WRC-97)**.~~ [All
notices for high altitude platform stations in these bands that were
filed with the Bureau prior to 22 November 1997 shall be canceled as of
1 January 2010 unless the notifying administration informs the Bureau
before this date that the notified assignments have been brought into
use.]{.underline}

**Reasons**: Consequential to the suppression of Resolution **122.**
While studies have been completed, HAPS systems still need to be subject
to the provisions of Article **9** to ensure coordination with the FSS
at 47 GHz. Nos. **9.17** and **9.18**, which apply for the coordination
of terrestrial stations, including HAPS, with earth stations, are
currently applicable without having to be called out in a footnote to
Article 5 of the Radio Regulations. No. **9.22** is a new provision (see
**USA/1.8/3** below) that is intended to address the previously
unaddressed coordination case of transmitting HAPS ground-based stations
with receiving space station of the FSS, when the HAPS ground station
appears in the coverage area of a satellite network. The final sentence
of the provision is needed because Resolution 122 (Rev. WRC-03)
instructs the BR to maintain HAPS notices received prior to 22 November
1997 "until a date to be decided by a future WRC."

#### USA/1.8/3

**MOD**

**9.22** ~~Not used[.]{.underline}~~ [*q)* for a transmitting station
which is part of a high altitude platform station network as defined by
**1.66A** of the Radio Regulations, for which the requirement to
coordinate is included in a footnote to the Table of Frequency
Allocations referring to this provision, in respect of a space station
in any frequency band allocated with equal primary rights to the space
service of the existing or planned space station and to the terrestrial
service in which the high altitude platform station network is to
operate.]{.underline}

**Reasons**: Addresses a coordination scenario for HAPS stations.

#### USA/1.8/4

**MOD**

**9.5B.1** The only terrestrial stations to be taken into account are
those for which the requirement to coordinate is under Nos. **9.11**,
**9.11A**, ~~and~~ **9.21[, ]{.underline}**[and **9.22**.]{.underline}

**Reasons**: Consequential to the addition of No. **9.22** (see
**USA/1.8/3** above).

#### USA/1.8/5

**MOD**

**9.30** Requests for coordination made under Nos. **9.7** to
**9.14**[,]{.underline} ~~and~~ **9.21** [and **9.22**]{.underline}
shall be sent by the requesting administration to the Bureau, together
with the appropriate information listed in Appendix **4** to these
Regulations.

**Reasons**: Consequential to the addition of No. **9.22** (see
**USA/1.8/3** above) there is a need to determine what happens to the
coordination information.

#### USA/1.8/6

**MOD**

**9.36.1** The list of administrations identified by the Bureau under
Nos. **9.11** to **9.14**, ~~and~~ **9.21** [and **9.22**]{.underline}
is only for information purposes, to help administrations comply with
this procedure.

**Reasons**: Consequential to the addition of No. **9.22** (see
**USA/1.8/3** above), the identification of affected administrations by
the BR in the case of a HAPS network will be for information only.

#### USA/1.8/7

**MOD**

**9.50** An administration having received a request for coordination
under Nos. **9.7** to **~~9.21~~[9.22]{.underline}**, or having been
included in the procedure following action under No. **9.41**, shall
promptly examine the matter with regard to interference which may be
caused to or, in certain cases, by its own assignments^20^, identified
in accordance with Appendix **5**^21^.

**Reasons**: Consequential to the addition of No. **9.22** (see
**USA/1.8/3** above), the affected administrations must examine the HAPS
information.

#### USA/1.8/8

**MOD**

**9.52C** For coordination requests under Nos. **9.11** to
**9.14**[,]{.underline} ~~and~~ **9.21** [and **9.22**]{.underline}, an
administration not responding under No. **9.52** within the same
four‑month period shall be regarded as unaffected and, in the cases of
Nos. **9.11** to **9.14**, the provisions of Nos. **9.48** and **9.49**
shall apply.

**Reasons**: Consequential to the addition of No. **9.22** (see
**USA/1.8/3** above), the affected administrations must examine the HAPS
information.

#### USA/1.8/9

**MOD**

**9.53A** Upon expiry of the deadline for comments in respect of a
coordination request under Nos. **9.11** to **9.14**[,]{.underline}
~~and~~ **9.21** [and **9.22**]{.underline}, the Bureau shall, according
to its records, publish a Special Section, indicating the list of
administrations having submitted their disagreement or other comments
within the regulatory deadline.     (WRC‑2000)

**Reasons**: Consequential to the addition of No. **9.22** (see
**USA/1.8/3** above), the BR will publish those administrations that
have objected to the HAPS network.

#### USA/1.8/10

**MOD**

APPENDIX 5

TABLE 5-1     (WRC‑2003)

**Technical conditions for coordination\
(see Article 9)**

  ---------------------- ----------------------- ----------------------- ---------------------- ------------------------- ------------
  Reference\             Case                    Frequency bands\        Threshold/condition    Calculation\              Remarks
  of\                                            (and Region) of the                            method                    
  Article 9                                      service\                                                                 
                                                 for which coordination\                                                  
                                                 is sought                                                                

  [No. **9.22\           [a transmitting station [Frequency bands for    [Bandwidth             [Check using assigned     
  **HAPS/GSO,            which is part of a high which a footnote refers overlap]{.underline}   frequencies and           
  non-GSO]{.underline}   altitude platform       to No.                                         bandwidths]{.underline}   
                         station network as      **9.22**]{.underline}                                                    
                         defined by **1.66A** of                                                                          
                         the Radio Regulations,                                                                           
                         for which the                                                                                    
                         requirement to                                                                                   
                         coordinate is included                                                                           
                         in a footnote to the                                                                             
                         Table of Frequency                                                                               
                         Allocations referring                                                                            
                         to No. **9.22**, in                                                                              
                         respect of a space                                                                               
                         station.]{.underline}                                                                            

                                                                                                                          
  ---------------------- ----------------------- ----------------------- ---------------------- ------------------------- ------------

**Reasons:** Consequential to the addition of No. **9.22** (see
**USA/1.8/3** above), Table 5-1 needs to be updated to take No. **9.22**
into account.

**Document WAC/066(14.09.05):**

#  DRAFT PROPOSAL FOR THE WORK OF THE CONFERENCE

**Agenda Item 1.19:** to consider the results of ITU-R studies regarding
spectrum requirements for global broadband satellite systems in order to
identify possible global harmonized FSS frequency bands for the use of
internet applications, and consider the appropriate regulatory
provisions, taking also into account No. 5.516B of the Radio
Regulations.

**Background Information:** WRC-03 adopted this agenda item which
relates to the identification of globally harmonized fixed-satellite
service frequency bands for broadband applications via satellite. It is
important to note that all FSS frequency bands, including the bands,
listed in No. 5.516B, can be and in many cases are used for internet
applications.

ITU-R Working Party 4A has the lead in preparing the technical basis for
this agenda item at WRC-07. It has carried out a number of studies at
its last three meetings and has prepared draft CPM text. The studies
have examined the issues associated with this agenda item. These include
the question of harmonized frequency bands and the status of internet
applications being implemented in FSS bands.

The initial global spectrum allocations for the Fixed Satellite Service
(FSS) were made at WARC-71, and WARC-79. These included spectrum through
the 20/30 GHz range. Additional global allocations to the FSS were made
in the 40/50 GHz range at subsequent conferences. Many of these bands
are heavily utilized delivering a diversity of services. The FSS
allocations are being used by over 200 geostationary radiocommunication
satellites including those indicated in No. 5.516B identified for use in
high density applications. Most of the FSS allocations are global in
nature and therefore harmonized in all three ITU-R Regions.

There has been a proliferation of different size earth stations for
different types of applications during the over 25 years these
allocations have been available. As these applications have evolved so
too have the basic Radio Regulations to provide for them. Access to the
internet using FSS satellite systems is being implemented in a number of
ways. Examples are illustrated in the table below.

+-----------------------+-----------------------+-----------------------+
| **Application**       | **Bands**             | **Example Terminal    |
|                       |                       | Size**                |
+-----------------------+-----------------------+-----------------------+
| Direct-to Business    | 11/14 GHz             | 1.2 m                 |
|                       |                       |                       |
| or Residence          | 20/30 GHz             | 0.6 m                 |
+-----------------------+-----------------------+-----------------------+
| ESV                   | 4/6, 11/14 GHz        | 2.4 m, 1.2 m          |
+-----------------------+-----------------------+-----------------------+
| Bundled with TV       | 11/14 GHz             | 0.6-2.4 m             |
|                       |                       |                       |
| Services              | 20/30 GHz             | 0.6 m                 |
+-----------------------+-----------------------+-----------------------+
| V-sat RLAN            | 11/14 GHz             | 0.6-2.4 m             |
+-----------------------+-----------------------+-----------------------+

As illustrated in the table there has been a variety of internet
applications which have developed. These have taken place within the
harmonized Regional allocations to the FSS. Today's service provider
often initiates an internet service using only a few transponders
(partial sections of a satellite) of a satellite for economic reasons
rather than incurring the capital expense of a whole satellite for a
single type of application. In addition, ground equipment suitable for
broadband/Internet applications can be adapted to other bands, and as
internet applications are being pursued in a wide range of FSS
allocations, it would be counter-productive to identify any subset of
frequencies especially for internet applications.

The current Radio Regulations for access, coordination and notification
of satellite networks fully accommodate the ability of FSS systems to
provide internet access. In addition, commercially available ground
equipment suitable for broadband/internet applications is frequency
agile and is fully capable of operating with the existing and planned
FSS satellite systems in the allocated frequency bands.

**Proposal:**

**USA/ / 1 [NOC]{.underline}**

**Reason:** There are many existing and planned FSS satellite systems in
a number of different FSS frequency bands that carry internet
applications They are in use and will continue to be used on a worldwide
basis in the 4/6 GHz, 11/14 GHz, and 20/30 GHz allocations. The
identification of specific FSS frequency bands for internet applications
will not improve nor will it facilitate the provision of these
applications. Consequently, no changes to the Radio Regulations are
necessary.

**[INFORMAL WORKING GROUP 3 (IWG-3)]{.underline}**

**[IMT-2000 and 2.5 GHz Sharing Issues]{.underline}**

**Document WAC/069(14.09.05)**[^1]**:**

**IWG-3 COMMENTS ON THE RCS PROPOSAL ON AGENDA ITEM 7.2 (including**
Agenda Item 2.8 in Resolution 803(WRC-2003), Preliminary agenda for the
2010 World Radiocommunication Conference)

*2.8 to consider the progress of the ITU‑R studies concerning the
development and regulatory requirements of terrestrial wireless
interactive multimedia applications, in accordance with
Recommendation **722** **(WRC‑03)** and to take any appropriate action
on this subject;*

**ISSUE**

WRC-07 will set the agenda for the subsequent WRC, WRC-10. The
preliminary, or tentative, WRC-10 agenda resides in Resolution
803(WRC-03). The issue is whether or not the regulatory developments in
terrestrial wireless interactive multimedia applications (TWIMs) require
review by WRC-10 for action to be taken.

**BACKGROUND**

WRC-10 provisional agenda item 2.8 derives from the WRC-03 agenda item
1.21, "to consider progress of the ITU-R studies concerning the
technical and regulatory requirements of terrestrial wireless
interactive multimedia applications, in accordance with Resolution 737
(WRC-2000), with a view to facilitating global harmonization." At
WRC-2000, some European administrations insisted that the TWIMs matter
be on the WRC-03 agenda, but no significant input was submitted to the
ITU-R group formed to develop the text for this agenda item for the CPM
Report to WRC-03, the Joint Task Group (JTG) 1-6-8-9. Therefore, there
were no substantial study results that could form a basis for proposals
to accordingly modify/amend the Radio Regulations (RRs) at WRC-03.
WRC-03 consequently formed this tentative agenda item 2.8 for WRC-10.

Since WRC-2003, Working Party (WP) 1B of ITU-R SG 1 has been developing
a Working Document Towards a Preliminary Draft New Report on Technical
Convergence with Respect to Terrestrial Fixed, Mobile, and Broadcasting
Interactive Multimedia Applications per Question ITU-R 224/1, "Technical
Convergence with respect to Terrestrial Fixed, Mobile, and Broadcasting
Interactive Multimedia Applications and the Associated Regulatory
Environment." This item currently under study in WP 1B can be considered
a follow on to the original WRC-03 TWIMs agenda item.

CPM06-01 gave WPs 1B and 4A (of ITU-R SG 4) the lead for responding to
Resolution 951 (WRC-03), "Options to Improve the International Spectrum
Regulatory Framework". This Resolution instructs the Director of the ITU
Radiocommunication Bureau to include the results of these studies in his
report to WRC-07, with the purpose of consideration of the suitability
of this subject on a future WRC agenda.

After WRC-03, Study Group (SG) 1 developed a new Study Question, 229/1,
pursuant to the matter of Res. 951(WRC-03). Likewise, SG 1 has sent a
liaison statement (Doc. 4A/131, 8/53, 9B/84, etc.) to several WPs across
various SGs, seeking their input from their radio service perspective on
options to improve the international spectrum regulatory framework. WPs
8A and 8F of SG 8, and several WPs of SG 9 have already replied to this
query from SG 1. Doc. 1B/50, Annex 5 is the current Working Document
Towards the Report to the BR Director in response to the Resolution 951
matter.

Although no action was taken on WRC-03 agenda item 1.21 at WRC-03, its
legacy is still present in ongoing ITU-R studies. The Resolution
951(WRC-03) study, the results of which will be reported to WRC-07, is
similar to the TWIMs matter in that replies from ITU-R groups to the
above-mentioned SG 1 liaison statement have focused on the issues of
convergence of current and future wireless applications, and how they
fit into the spectrum regulatory framework. Doc. 1B/50, Annex 4,
indicates in its introduction that the scope of these issues may be
perceived to fall under the scope of Resolution 951(WRC-03).

**IWG-3 RECOMMENDATION ON RCS VIEW**

Given that the ITU-R studies pursuant to Rec. 722(WRC-03) and Res.
951(WRC-03) are still ongoing and have not yet presented results, IWG-3
is of the view that the US should wait until these studies have
concluded before reaching a decision on the retention and final wording
of agenda item 2.8 for the WRC-10 agenda.

If this agenda item is retained, it is likely more suitable to modify
its language to relate it to the Res. 951(WRC-03) studies, since the
results of these will be presented to WRC-07 by the Radiocommunication
Bureau.

A possible outcome would be to replace the "terrestrial wireless
interactive multimedia applications" reference with text such as
"convergence of radio technologies and wireless applications," and
"flexible allocation framework". Even if a modified WRC-10 agenda item
remove the direct reference to TWIMs, Rec. 722(WRC-03) and the WP 1B
studies on TWIMs should be noted in the companion resolution to the
agenda item, as background information.

**[INFORMAL WORKING GROUP 4 (IWG-4)]{.underline}**

**[Broadcasting and Amateur Issues]{.underline}**

**Document WAC/070(14.09.05):**

**Draft Preliminary View on WRC-07 Agenda Item 1.11**

***1.11 to review sharing criteria and regulatory provisions for
protection of terrestrial services, in particular the terrestrial
television broadcasting service, in the band 620-790 MHz from
broadcasting-satellite service networks and systems, in accordance with
Resolution 545 (WRC‑03);***

**ISSUE**

In the United State (US) the 620-790 MHz band is used only by
terrestrial services. This band has been mostly used by the broadcasting
services; however, with the transition to digital TV, other terrestrial
users in the mobile service will start to use parts of this band.

Therefore, the protection of these terrestrial services from harmful
interference from broadcast-satellite transmissions is a relevant issue
in the US. Given the possibility that satellites using the HEO orbit may
be deployed in the band (see **BACKGROUND** for more information), US
interests should participate in the AI (agenda item) 1.11 studies to
insure minimum adverse impact to their operations in the 620-790 MHz.

Res. 545 details the technical and regulatory procedures relating to the
operation of BSS networks in this band. In summary, BSS networks that
were not operational at the end of WRC-03, will neither be coordinated,
nor notified, nor brought into use until the end of WRC-07, so that this
WRC can reach a conclusion based on the AI 1.11 studies. Per *resolves
6)* of Res. 545, the relationship between GSO and non-GSO networks in
this band will be decided by WRC-07. In the interim, No. 22.2 applies to
networks received by the Bureau before WRC-03. Even though the US does
not use this band for BSS, which type of network would have precedence
over the other in coordination is of interest to the US, since non-GSO
(such as HEO) and GSO networks impact terrestrial networks differently
in terms of interference mechanisms.

**BACKGROUND**

This matter actually had its genesis in discussions surrounding AI 1.37
**(**to consider the regulatory and technical provisions for satellite
networks using highly elliptical orbits) at WRC-03. Proposal
EUR/13A37/3, a draft Resolution on the study of provisional pfd limits
and studies concerning regulatory and technical provisions for satellite
systems using highly elliptical orbits (HEOs), included a *resolve* on
provisions applicable to HEO satellite systems using the 620-790 MHz BSS
allocation. Likewise, Arab administrations proposed that HEO use in the
620-790 MHz band also be studied for WRC-07 (see ARB/27A31/3).

**These proposals resulted in WRC-03 establishing agenda item 1.11 for
WRC-2007 and resolution,** Res. 545(WRC-03), ***"**Technical and
regulatory procedures relating to the broadcasting-satellite service
networks operating in the 620-790 MHz band**."***

BSS operation can occur in the 620-790 MHz band via the provision
**5.311 (WRC-03)** of the Radio Regulations, subject to agreement by
affected administrations and with a pfd constraint.

What renders the landscape of this issue even more complicated in the
Regional Radiocommunication Conference (RRC) activity, which is to plan
for the digital TV transition in the 174‑230 MHz and 470-862 MHz bands
for all of Region 1 and some adjoining parts of Region 3. The 2^nd^ and
final RRC will occur in May 2006. Therefore, any space-terrestrial
co-existence studies undertaken for this agenda item must take this into
consideration. Analog and digital systems will have different
transmitter/receiver characteristics, and the results of sharing studies
may be impacted by RRC activity. The first RRC meeting, RRC-04, produced
Resolution COM 4/1, "Protection of digital terrestrial broadcasting from
broadcasting-satellite service networks operating in the 620-790 MHz
band", that specifically treats the matter of the use of the 620-790 MHz
band by BSS satellites. The two resolves of this Res. essentially render
the BSS space and earth station usage in this band secondary.

In 1997 the US Congress passed legislation requiring TV channels 60 to
69 to be made available for other services as a result of the transition
to digital TV. In view of this statutory mandate, the US Federal
Communications Commission (FCC) conducted proceedings that also made
available channels 52 to 59 and developed and adopted two band plans;
one for 698-746 MHz, the lower 700 MHz band plan (former UHF
broadcasting channels 52-59); and the upper 700 MHz plan for the 746-806
MHz band (former UHF channels 60-69). The upper 700 MHz band has 36 MHz
allocated for commercial use (746-794 MHz), and the remaining 24 MHz
allocated for public safety use.

Congress established 31 December 2006 as the target date for the
completion of the transition to digital TV. The FCC has already
auctioned off 18 MHz of the lower 700 MHz band, and no auction date for
the remaining spectrum in this segment has been announced. A 6 MHz
channel in the upper 700 MHz spectrum has so far been auctioned.

The 620-698MHz band (UHF channels 39-51) will constitute a major part of
the total bands allocated to television broadcasting, particularly as
the US transitions from analog to digital television.

For further details on the reallocation of the 698-790 MHz band in the
US, see Doc. 8A-160, *"Information paper on the reallocation of the
698-806 MHz frequency band in the United States,"* April 11-15, 2005
meeting of ITU-R WP 8A.

**US VIEW**

Since the US has a long history of terrestrial broadcasting in the band
620-790 MHz, and the future US use of this band will continue to be for
terrestrial applications; the US is first and foremost concerned with
the unconstrained and unhindered development and of these applications,
be they broadcasts, public safety, and other mobile applications in the
reallocated segment. In order for the US to support the deployment of
BSS networks in the band 620-790 MHz, sharing studies underway in the
ITU-R need to demonstrate that BSS deployment in this band will not
negatively impact the current and future use of this band by terrestrial
services. US interests should participate in these ITU-R studies.

# 

**[INFORMAL WORKING GROUP 5 (IWG-5)]{.underline}**

**[Regulatory Issues]{.underline}**

**Document WAC/071(14.09.05)**[^2]**:**

**Preliminary Views on WRC-07**

[WRC-07 Agenda Item 1.10]{.underline} to review the regulatory
procedures and associated technical criteria of Appendix 30B without any
action on the allotments, the existing systems or the assignments in the
List of Appendix 30B.

**[1) General Views on Agenda Item 1.10]{.underline}**

**Issue**

Appendix 30B delineates allotments within portions of C-band and Ku-band
for each country; each allotment provides for national coverage under
specific technical conditions (e.g., maximum power densities and minimum
antenna sizes). While this plan was intended to preserve the opportunity
for all countries to obtain real benefits from use of satellite systems
in the geostationary satellite orbit (GSO), the actual number of systems
put into operation pursuant to this appendix since its original adoption
in 1988 has been quite limited.

Some aspects of the regulatory procedures and technical criteria are
outdated and serve to restrict, rather than foster, the development of
real, economical systems.

**Background**

Since the adoption, in 1988, of Appendix 30B, satellite technologies
have advanced dramatically. And at the same time, many countries have
recognized that satellites offer great potential to facilitate access to
digital broadband services such as the Internet, thereby leaping past
antiquated technologies. Yet, only slight changes have been made to
Appendix 30B, rendering it still poorly-suited to satisfy these new
technology requirements. WRC-03 has only just begun to address the
issue. For example, full account has yet to be taken of the widespread
use of digital modulation techniques that facilitate high capacity at
substantially lower interference margins than envisaged when the
appendix was originally adopted.

WRC-03 made two notable changes to the appendix that involve the
technical criteria for analyses carried out from 5 July 2003: 1) the
interference criteria for aggregate and single entry C/I thresholds were
relaxed by 3 dB, and 2) an improved earth station off-axis gain pattern
was decided to be applied for cases requiring the additional
discrimination to resolve interference issues. Based on these decisions,
and the instructions of Resolution 146, the BR has prepared a new
reference plan reflecting these changes.

WRC-03 also recognized that additional changes to the regulatory
procedures and associated technical criteria of Appendix 30B may be
productive and thus put this item on the agenda for WRC-07. The CPM
referred this topic to WP-4A and the Special Committee (SC) for study
[and it has been extensively addressed in meetings of both groups in
2004 and 2005]{.underline}. ~~At its April 2004 meeting, WP-4A, as the
lead group for this item, considered several contributions, including
one from the USA, related to this topic.~~ [As a result of work jointly
conducted by]{.underline} WP-4A [and the SC,]{.underline}~~prepared~~ a
summary of the specific issues to be studied [has been developed. These
issues will be further considered in the upcoming meetings of WP 4A and
the SC in November/December 2005.]{.underline}~~for which contributions
to its next meeting in October are encouraged.~~

**U.S. Views**

[The U.S. is of the view that the general guidelines in 1 through 6
below should continue to be followed in the work pertaining to this
agenda item.]{.underline}

1.  The U.S. does not advocate any action on the allotments, the
    existing systems or the assignments in the List of Appendix 30B.

2.  The U.S. supports continued improvements to the regulatory
    procedures and associated technical criteria of Appendix 30B and is
    committed to working through the study groups and with other
    administrations toward that end.

3.  The U.S. considers that future technical criteria should be based on
    realistic parameters that reflect digital communications technology
    in use today and foreseen for the near future.

4.  The U.S. considers that sufficient flexibility should be built in to
    the regulatory procedures to permit reasonable accommodation of new
    technologies without requiring additional revisions to Appendix 30B
    post WRC-07.

5.  The U.S. intends to focus its efforts on improvements to the
    regulatory procedures and associated technical criteria for the
    Ku-band portion of Appendix30B, as it considers this offers the
    greatest opportunity for improvements that can yield cost-effective
    access to satellite broadband services.

6.  The U.S. considers that the bands subject to Appendix 30B should be
    among those considered for the global broadband satellite systems
    serving Internet applications addressed under agenda item 1.19.

**[2) Specific Views on Agenda Item 1.10]{.underline}**

[Consistently with the~~se~~ above guidelines, the U.S. has submitted
contributions on Appendix 30B issues to WP 4A and has actively
participated in the discussions of this topic both in WP 4A and in the
SC. In particular, as discussed in more detail section~~s A2 and B~~
below, the U.S. is of the view that significant increases in flexibility
can be obtained through changes to the regulatory procedures in two
specific areas: the definition of additional uses and subregional
systems; the processing of the submissions for additional uses and
subregional systems.]{.underline}

[~~A.~~ A. Definition of Additional Uses and Subregional
Systems]{.underline}

[The orbit/spectrum resources corresponding to the Appendix 30B
frequencies are primarily associated with allotments and assignments
resulting from the conversion of allotments. Allotments guarantee to
each administration the right to use the Appendix 30B frequencies for
national coverage and under specific technical conditions, including a
nominal orbital location and a Pre-Determined Arc (PDA) within which the
orbital location can be selected. Allotments can be converted into
assignments without any change to orbital location or other parameter.
However, most likely conversion into an assignment will include
modification of several parameters of the allotment.]{.underline}

[In addition, Appendix 30B frequencies can be utilized by other systems
that currently fall into three categories: subregional systems,
additional uses and existing systems.]{.underline}

[Existing systems are associated with satellite networks that had been
filed with the ITU before 8 August 1985 (First Session of the Conference
that developed the Appendix 30B Plan). These systems have either been
brought into use or the corresponding filings have expired.]{.underline}

[Section II of Article 6 of Appendix 30B describes the procedure for the
introduction of subregional systems while Section III of the same
Article 6 contains supplementary provisions applicable to additional
uses in the planned bands. Table 1 below summarizes the main
characteristics of these two types of use of the Appendix 30B frequency
bands.]{.underline}

[Table 1. Current Characterization of Subregional Systems and Additional
Uses in the]{.underline}

[Appendix 30B Frequencies]{.underline}

  -------------------------- ------------------------------ ------------------------ ---------------------
  [Attribute]{.underline}    [Subregional                   [Additional              
                             System]{.underline}            Use]{.underline}         

  [Coverage]{.underline}     [Necessarily includes 2 or     [Can include one or more 
                             more neighboring countries     countries (see No. 2.6   
                             (see No. 2.5 of                of AP30B)]{.underline}   
                             AP30B)]{.underline}                                     

  [Relationship to           [May be associated with the    [To be implemented in    
  Allotments]{.underline}    suspension of allotments of    addition to allotments   
                             one or more of the             or assignments (no       
                             participating                  suspension of allotments 
                             administrations]{.underline}   foreseen)]{.underline}   

  [Compatibility with        [Be compatible with:                                    
  Allotments and             allotments; assignments in the                          
  Assignments]{.underline}   List; and assignments for                               
                             which complete information has                          
                             been received]{.underline}                              

  [Use of the PDA            [May change orbital locations                           [Is not allowed to
  Concept]{.underline}       of other allotments or                                  changed orbital
                             assignments within the PDA                              locations of other
                             (see Nos. 6.48 through 6.50 of                          allotments or
                             AP30B)]{.underline}                                     assignments unless
                                                                                     authorized by the
                                                                                     administrations
                                                                                     affected (see No.
                                                                                     6.56 of
                                                                                     AP30B)]{.underline}

  [Period of                 [Not specified]{.underline}                             [15
  validity]{.underline}                                                              years]{.underline}
  -------------------------- ------------------------------ ------------------------ ---------------------

[It can be concluded from the several provisions addressing subregional
systems that this option was introduced in order to allow neighboring
countries to combine their allotments into a system with regional
coverage. This interpretation is consistent with the suspension of
allotments associated with subregional systems as well as with other
advantages granted to these systems and not to additional uses (e.g. use
of the PDA concept, unlimited period of validity).]{.underline}

[However, up to now the submissions for subregional systems have never
included requests for suspension or partial suspension of allotments in
application of Section II of Appendix 30B and such submissions have been
implemented in a way that does not affect allotments in the Plan or
assignments in the List. Therefore, subregional systems have actually
been implemented as "additional uses" in the sense that they will
coexist with allotments and assignments as additional uses do. Moreover,
one element in the regulations that might draw a distinction between
these two categories (subregional systems are "created by agreement
among neighbouring countries" - see No. 2.5 of AP30B) has been
recognized as difficult to apply because there is no clear definition
for the term "neighbouring countries".]{.underline}

[Given all the above, there is no reason for the distinction between
these two types of use of Appendix 30B frequencies and the U.S. is
~~f~~of the view that these two categories should be merged into one
category as described below. The new category would still be called
"additional uses" and would have the attributes given in Table
2.]{.underline}

**[Table 2. Possible New Characterization of Additional
Uses]{.underline}**

**[in the Appendix 30B Frequencies]{.underline}**

  ----------------------------- ------------------------------------------------
  **[Attribute]{.underline}**   **["Additional Use"]{.underline}**

  **[Coverage]{.underline}**    **[Can include one or more countries without the
                                need to obtain agreement from other countries
                                included in the coverage area]{.underline}**

  **[Relationship to            **[To be implemented in addition to allotments
  Allotments]{.underline}**     or assignments]{.underline}**

  **[Compatibility with         **[Be compatible with: allotments; assignments
  Allotments and                in the List; and assignments for which complete
  Assignments]{.underline}**    information has been received]{.underline}**

  **[Use of the PDA             **[May change orbital locations of other
  Concept]{.underline}**        allotments or assignments within the PDA (see
                                Nos. 6.48 through 6.50 of AP30B)]{.underline}**

  **[Period of                  **[Not specified]{.underline}**
  validity]{.underline}**       
  ----------------------------- ------------------------------------------------

[As it can be seen from Table 2, the need for obtaining agreement from
other countries included in the coverage area that currently applies to
subregional systems and to additional uses is being dropped. No rights
of an administration A with territory included in the coverage area are
in any way being violated. Any rights of administration A with respect
to the use of FSS space stations in the Appendix 30B frequencies are
automatically protected because the additional use has to be compatible
with allotments; assignments in the List; and assignments for which
complete information has been received. Terrestrial systems in the
territory of administration A are protected by the power-flux density
limits of Article 21 of the Radio Regulations. This regulatory framework
is no different than that associated with the operation of an FSS space
station in any other frequency band and there is no reason why the
treatment of "additional uses" in the Appendix 30B frequencies should
deviate from such framework.]{.underline}

[In case it is deemed of interest to retain the "subregional systems"
category, the regulations should make clear that this category intends
to provide flexibility to countries that want to combine their
allotments to operate a system with enlarged coverage area, i.e. the
allotments of all participating administrations would be suspended in
their totality. By introducing this requirement, no loss of flexibility
would be imposed on any administration because allotments able to
co-exist with the subregional system could, for instance, be proposed as
additional use. Further, the requirement for participants to be
neighbouring countries could be dropped.]{.underline}

[B. Processing of Submissions for Additional uses and Subregional
Systems]{.underline}

[Currently all submissions associated with Appendix 30B frequencies are
considered in a single queue. More flexibility can be achieved if
submissions are treated differently depending on whether they are
associated with "capacity in the Plan" or with "capacity beyond that in
the Plan". Capacity in the Plan would include allotments and submissions
for converting allotments into assignments even if the assignments are
not within the envelope of the original allotments.]{.underline}

[Uses of Appendix 30B frequencies would then fall into two categories:
"the Plan" and "additional uses" (with the class of additional uses
redefined to also include subregional systems as discussed in Section A
above]{.underline}[^3][). As a result, there is a need to set the rules
that define the coexistence between satellite networks within each
category as well as the coexistence between satellite networks in
different categories.]{.underline}

[Within "the Plan", the current rules continue to apply. This means that
vis-à-vis allotments and assignments resulting from the conversion of
allotments any future submission for conversion of an allotment will
follow the current rules. This would maintain unchanged the rights of
allotments and assignments resulting from the conversion of
allotments.]{.underline}

[Within the "additional uses" category, co-existence would be governed
by the rules of Articles 9 and 11 of the Radio Regulations, more broadly
by the provisions of the Radio Regulations applicable to non-planned FSS
bands. This seems to be a natural way to treat these uses of the
Appendix 30B frequencies since they are actually associated with
"capacity beyond that in the Plan".]{.underline}

[In particular, the need for coordination between two additional uses
will be determined by the rules applicable in non-planned FSS bands. As
a result, for instance, a submission in the "additional uses" category
will be allowed to have a pending coordination with respect to another
additional use submission with an earlier date of submission. Not being
able to obtain a coordination agreement within a limited period of time
does not constitute grounds for returning the filing to the
administration that had originated it. This treatment contrasts with the
current situation in which a non-implemented additional use that has
successfully entered the List of assignments (see 5.5 in Article 5 of
Appendix 30B) may block the consideration of subsequent additional uses.
For instance, if one of these subsequent additional uses AU2 is not
compatible with the additional use AU1 already in the List and cannot
either modify its parameters or coordinate with AU1 within a limited
period of time, then the submission of AU2 is discarded.]{.underline}

[In view of the above, the BR will have to maintain two different lists.
List A will include: (i) allotments; (ii) assignments resulting from the
conversion of allotments; and (iii) additional uses that meet two
conditions: (a) have been determined to be compatible with allotments
and assignments resulting from the conversion of allotments; and (b)
have completed all required coordinations with all additional uses (both
in List A as well as in List B defined below).]{.underline}

[List B will include additional uses that have been determined to be
compatible with all allotments and assignments resulting from the
conversion of allotments but have not yet obtained agreements from all
other additional uses with which there is a need for coordination.
Additional use submissions not compatible with allotments and
assignments resulting from the conversion of allotments would still be
treated as in the current rules.]{.underline}

[The reference situation that will be used to verify compatibility with
allotments and assignments resulting from the conversion of allotments
is based only on List A. Taking into account additional uses in List B
in the calculation of the reference situation would have the drawback of
distorting this reference situation with many additional use submissions
that may never be able to complete the required coordinations or being
ultimately implemented.]{.underline}

**[Additional U.S. Views]{.underline}**

[The U.S. is of the view that:]{.underline}

[~~2~~1) Consistent with the~~se~~ above guidelines, ~~that~~
significant increases in flexibility can be obtained through changes to
the regulatory procedures in two specific areas: the definition of
additional uses and subregional systems; the processing of the
submissions for additional uses and subregional systems.]{.underline}

[2~~3~~) With regard to the definition of additional uses and
subregional systems, there is no reason for the distinction between
these two types of use of Appendix 30B frequencies and that these two
categories should be merged into one category that would continue to be
called "additional uses" and would have the following
attributes:]{.underline}

a)  [Coverage: Can include one or more countries without the need to
    obtain agreement from other countries included in the coverage
    area.]{.underline}

b)  [Relationship to Allotments: Would be implemented in addition to
    allotments or assignments.]{.underline}

c)  [Compatibility with Allotments and Assignments: Would be compatible
    with allotments, assignments in the List, and assignments for which
    complete information has been received.]{.underline}

d)  [Use of the PDA Concept: May change orbital locations of other
    allotments or assignments within the PDA]{.underline}

e)  [Period of Validity: Not specified.]{.underline}

[3~~4~~) In case it is deemed of interest to retain the "subregional
systems" category, the regulations should make clear that this category
intends to provide flexibility to countries that want to combine their
allotments to operate a system with enlarged coverage area, i.e. the
allotments of all participating administrations would be suspended in
their totality.]{.underline}

[4~~5~~) With regard to the processing of submissions, uses of the
Appendix 30B frequencies would fall into two categories: "the Plan" and
"additional uses". With the Plan, the current rules continue to apply.
Within the "additional uses" category, co-existence would be governed by
the rules of Article 9 and 11 of the Radio Regulations, more broadly by
the provisions of the Radio Regulations applicable to non-planned FSS
bands.]{.underline}

[5~~6~~) Taking into consideration items ~~3~~]{.underline}2[, ~~4~~3
and ~~5~~4, above, the BR would be required to maintain two lists. List
A will include: (i) allotments; (ii) assignments resulting from the
conversion of allotments; and (iii) additional uses that meet two
conditions: (a) have been determined to be compatible with allotments
and assignments resulting from the conversion of allotments; and (b)
have completed all required coordinations with all additional uses (both
in List A as well as in List B defined below).]{.underline}

[List B will include additional uses that have been determined to be
compatible with all allotments and assignments resulting from the
conversion of allotments but have not yet obtained agreements from all
other additional uses with which there is a need for coordination.
Additional use submissions not compatible with allotments and
assignments resulting from the conversion of allotments would still be
treated as in the current rules.]{.underline}

[The reference situation that will be used to verify compatibility with
allotments and assignments resulting from the conversion of allotments
is based only on List A.]{.underline}

[In the case that category of~~-~~ "subregional systems" is maintained,
the treatment of submissions being proposed for "additional uses" would
apply to both additional uses and subregional systems.]{.underline}

**II. Draft Proposal on WRC-07 Agenda Item 1.13 received from the
National Telecommunications and Information Administration (NTIA):**

**Document WAC/062(14.09.05):**

## DRAFT PROPOSAL FOR THE WORK OF THE CONFERENCE

**Agenda Item 1.13:** taking into account Resolutions **729 (WRC-97),
351 (WRC-03)** and **544 (WRC-03)**, to review the allocations to all
services in the HF bands between 4 MHz and 10 MHz, excluding those
allocations to services in the frequency range 7 000-7 200 kHz and those
bands whose allotment plans are in Appendices **25, 26** and **27** and
whose channeling arrangements are in techniques and the spectrum
requirements for HF broadcasting;

**Background Information:** This is a very broad agenda item, as there
are multiple services allocated to the HF bands between 4 MHz and 10
MHz, including aeronautical mobile (OR), aeronautical mobile (R),
amateur, broadcasting, fixed, maritime mobile and mobile services.
Agenda item 1.13 covers three resolutions that deal with three separate
issues. These issues are connected within the agenda item on the basis
that they cover overlapping frequency ranges. The CPM convened following
WRC-03 assigned the primary responsibilities for the separate issues to
different working parties.

***Resolution 351***:

> resolves
>
> "1) that, in order to provide full worldwide interoperability of
> equipment on ships, there should be one technology, or more than one
> interoperable worldwide technology, implemented under Appendix **17**;
>
> 2\) that, as soon as the ITU-R studies are completed, a future
> competent conference should consider necessary changes to Appendix
> **17** to enable the use of new technology by the MMS;"

The focus of Resolution **351 (WRC-03)** is to identify a digital
technology, or family of digital technologies, that provide
interoperability and improved usage of the MF and HF bands allocated to
the maritime mobile service under Appendix **17**. The scope of this
portion of the agenda item includes a review of all Appendix **17**
assignments to facilitate the introduction of these advanced maritime
mobile digital systems.

Resolution **351** **(WRC-03)** calls for studies to include; future
requirements of the MMS, technical characteristics of the digital
systems, the necessary modifications to Appendix **17** to enable the
use of new technologies by MMS, a timetable for the introduction of new
digital technologies, and recommendations on how digital technologies
can be introduced while ensuring compliance with distress and safety
requirements. In accordance with *resolves* 2 of Resolution **351**, as
soon as the ITU‑R studies are completed, a competent conference should
consider necessary changes to Appendix **17**, to enable the use of new
digital maritime technologies by the MMS. These studies are still
underway and should be refined to examine the requirements of GMDSS
electronic messaging.

The future spectrum needs of the maritime mobile service in the HF bands
are closely related to the introduction of new data exchange
technologies into the maritime mobile service, as an alternative
standard for narrow-band direct printing (NBDP). The use of NDBP is in
rapid decline for commercial communications. IMO has noted NBDP is
currently used for broadcasting of MSI, ship reporting, weather
forecasts and for business communications, e.g., by fishing fleets.
However, all these functions could in principle be provided by
alternative HF data communications technology. A PDNR for the new MMS HF
data exchange service has been developed based on commercial Orthogonal
Frequency Division Modulation (OFDM) (see 8B/135).

NBDP remains useful for providing distress communications in the polar
regions (sea area A4) when other terrestrial means of communication are
no longer reliable because of atmospheric noise, and there is no
coverage from geostationary satellite networks providing service to the
maritime community. This NBDP functionality will be preserved using the
HF distress and safety frequencies relocated to Appendix **15**.

Because the studies on this issue are continuing, a revision of
Resolution **351** to recognize the current views of the IMO regarding
the technology transition, to note the transition that has already taken
place, and to direct additional studies regarding the spectrum needed
for new technologies is appropriate.

***Resolution 544:***

> resolves to invite ITU-R
>
> "1 to carry out studies on this matter, particularly in respect of the
> bands identified in *noting* above, taking into account technical,
> operational, economic and other relevant factors, including the
> appropriate transitional arrangements, and how the introduction of
> digital emissions will affect the HF broadcasting requirements and how
> such reallocations will affect other services using these bands."
>
> further resolves
>
> \"to recommend a future competent conference to conclude, where
> appropriate, on additional spectrum requirements for the broadcasting
> service, taking into account the interest of all affected services\"

Resolution **544 (WRC-03)** resulted from work that was not completed at
WRC-03. WRC-03 allocated 50 kHz in Region 2 to the broadcasting service
as a result of the realignment of portions of the 7 MHz band under
WRC-03 agenda item 1.23. Prior to WRC-03, the broadcasters identified a
shortfall in the 4-10 MHz band of 250 kHz of spectrum to alleviate
co-channel interference, and 800 kHz of spectrum to alleviate adjacent
channel interference. The Resolution also calls for a review of the
impact of relocating other services from current spectrum allocations if
these broadcasting spectrum requirements were accommodated as well as
what transitional arrangements should be made.

WARC-92 (**5.136**) decided to allocate 100 kHz of spectrum to the
broadcasting service which will transition from fixed and mobile service
allocations in 2007. Any further decrease in available spectrum may
affect the ability of fixed and mobile services users to establish and
maintain reliable essential and emergency communications services. Any
consideration by WRC‑07 of reallocating additional spectrum to the
broadcast service should carefully consider the impact on existing and
planned fixed and mobile services. Currently, there are 2 102 kHz
between 4 and 10 MHz allocated to support the land mobile services and 2
712 kHz allocated to the fixed service. After April 1, 2007,
implementation of the results of WARC-92 reduces that amount to 2002 kHz
for land mobile and 2512 kHz for the fixed service as a result of the
reallocation to the broadcast service. After March 29, 2009, in Region 2
an additional 50 kHz is allocated from the fixed and land mobile
services to the broadcast service.

Because of their reliability and low cost, fixed and mobile HF services
will continue to be required by Administrations. Administrations must be
ready to support fluctuations in demand by the fixed and mobile service
during emergency communications. The fixed and mobile services are
unique in that requirements to use them increase during emergency
situations. Public Protection and Disaster Relief operations depend on
the availability of spectrum to support operations.

Displacement of current frequencies from the fixed and mobile service
may require considerable expenses for realignment of communication
networks and change (replacement) of antennas. In some cases it may be
hard to establish required radio links based on the loss of currently
available portions of the spectrum and also due to spectrum crowding
from realignment of assignments to account for any spectrum allocated
from the fixed and mobile service to the broadcasting service.

The operational databases maintained by the HF Coordinating Committee
illustrate that a broadcast primary allocation of 250 kHz of spectrum
would alleviate co-channel interference, and 800 kHz of spectrum would
alleviate adjacent channel interference. According to text contained in
WP-8A/199, which originated from WP-6E, the broadcasters currently
address this shortfall by using FS and LMS bands on a non-interference
basis under Article **4.4**. According to WP 6E/162, 80-85% of shortwave
broadcasting hours in the 4-10 MHz band operate within broadcasting
allocations and do not operate under Article **4.4**.

There are interference risks associated with Article **4.4** operation.
The HF Coordinating Committee and Administrations need to take these
risks into account when assessing cross border interference potential
and coordinating usage under Article **4.4**. Some Administrations have
reported interference from the broadcast service in the fixed and mobile
bands. At least one incident resulted in discontinuation of broadcaster
operations. Given this interference risk, Article **4.4** operations do
not represent successful broadcaster occupancy of the fixed and mobile
bands, nor do they justify reallocation of these portions of the fixed
and mobile bands to the broadcasting service.

Broadcast providers are currently investing in alternate delivery
methods which may be used to augment or replace programming hours. FM,
cable, satellite, and Internet are beginning to provide alternate
delivery in developed countries, but are problematic for developing
countries due to cost, coverage, and reliability.

Recent natural disasters have demonstrated that the fixed and mobile
services are unique in comparison to the broadcast service in that
requirements are driven up rapidly during the development of emergency
situations. Increased congestion is inevitable during periods of peak
usage by the fixed and mobile services.

WP 9C has noted that during the 2004-2005 Indian Ocean Tsunami Relief
Effort, the emergent need for HF communications drove up spectrum demand
rapidly. Because of existing extensive usage of the HF bands in the
disaster areas, it was not possible to provide all the required channels
to meet required emergency communications.

Ionospheric (skywave) signal propagation is frequency selective and
frequencies usable for communications between any two points change over
time throughout the day. This is why several different segments of
spectrum within the HF frequency range, are allocated to each radio
service. This enables the users of the service to have full time access
to frequencies that are usable throughout a 24-hour period.

For the fixed and mobile services, propagation concerns make it
essential that the frequency channels or sub-bands of an HF pool are
evenly spaced in order to adapt to the daily and seasonal changes in the
ionosphere. Concentration of spectrum in large blocks with large gaps
between them cannot be optimal based on HF propagation phenomena. Thus
band spacing and availability have become crucial factors which affect
all services and have the potential to multiply requests for additional
spectrum.

The fixed and mobile services transmit frequencies may change often,
spreading the traffic over a wider spectrum. Statistically this may make
it appear like there is lower occupancy of the HF spectrum. An adaptive
system may find better propagation conditions and establish a link with
lower power levels than non-adaptive systems. Given this agility, HF
stations or HF circuits kept in a silent mode or on watch must be
furnished with the full set of frequencies to meet emergency
requirements at any moment in time.

The impact to the fixed and mobile services of allocating additional
spectrum to the broadcasters would be too severe, since those additional
allocations would come from bands assigned to these services. This
situation will not change in the foreseeable future. Consequently
Resolution **544** should be suppressed.

***Resolution 729:***

> resolves
>
> "1 that, in authorizing the operation of frequency adaptive systems in
> the MF and HF bands, administrations shall:
>
> 1.1 make assignments in the bands allocated to the fixed and mobile
> services;
>
> 1.2 not make assignments in the bands:
>
> \- allocated exclusively to the maritime or aeronautical mobile (R)
> services;
>
> \- shared on a co-primary basis with the broadcasting service,
> radiodetermination service or the amateur services;
>
> \- allocated to radio astronomy;
>
> 1.3 avoid use which may affect frequency assignments involving safety
> services made in accordance with Nos. **5.155**, **5.155A** and
> **5.155B**;
>
> 1.4 take into account any footnotes applicable to the proposed bands
> and the implications regarding compatibility;
>
> 2 that frequency adaptive systems shall automatically limit
> simultaneous use of frequencies to the minimum necessary for
> communication requirements;
>
> 3 that, with a view to avoiding harmful interference, the system
> should evaluate the channel occupancy prior to and during operation;
>
> 4 that frequency adaptive systems shall be notified to the Bureau in
> accordance with the provisions of Article **11**,"

Resolution **729 (WRC-97)** deals with implementation of adaptive HF
systems and was not successfully addressed at either WRC-2000 or
WRC-2003. Adaptive HF systems are systems that monitor the propagation
environment on pre-established channels, and react to use the optimal
frequencies available for transmission.

Frequency adaptive systems automatically limit simultaneous use of
frequencies to the minimum necessary for communication requirements.
According to 6E/223, which originated from WP-9C, this characteristic of
adaptive systems does not necessarily reduce the number of frequencies
that must be made available to ensure successful link establishment.
Consideration must also be given to maintain quality of service for uses
that fluctuate in response to situations such as those that arise during
Public Protection and Disaster Relief. The number of frequencies in an
adaptive frequency pool is directly interrelated to the specific HF
propagation characteristics based on time of day, season, sunspot
activity, etc. Therefore, efficiency improves as more frequencies are
available. A network of stations is assigned a number of frequencies
over which to communicate, and each station is assigned a unique address
(*e.g.,* alpha-numeric).

Adaptive HF systems have been in use for over 20 years. No special
consideration in the ITU Radio Regulations is required to fully
implement adaptive HF systems. By their nature these systems already
automatically limit simultaneous use of frequencies to the minimum
necessary for communication requirements. These systems also
automatically avoid harmful interference by evaluating the channel
occupancy prior to and during operations.

To fully exploit modern HF technology, the availability of sufficient
and coordinated spectrum resources is crucial, and bandwidth beyond the
typical 3 kHz-channels must be available.

The channel bonding approach currently in use is based on the use of
several 3 kHz contiguous channels. The advent of HF 64 kbps modems has
begun to provide the ability to utilize HF spectrum for Internet, large
file transfer, and advanced electronic messaging. Loss of HF spectrum
allocated to the fixed and mobile services would constrain the
development of advanced technologies such as messaging, file transfer,
and the Internet.

The required studies related to adaptive HF technology have been
adequately answered. Therefore, Resolution **729** can be suppressed.

However, there is an emergence of high bandwidth requirements in the
form of advanced fixed and mobile HF systems which does require urgent
study. Therefore a new resolution is required to examine the issues
involved in implementing advanced fixed and mobile HF systems in the in
MF/HF bands.

**Proposal:**

**USA/ /1 MOD**

RESOLUTION 351 (WRC-~~03~~[07]{.underline})

Review of the frequency and channel arrangements in the MF and\
HF bands allocated to the maritime mobile service with a view to\
improving efficiency by considering the use of new digital\
technology by the maritime mobile service

The World Radiocommunication Conference (Geneva,
~~2003~~[2007]{.underline}),

**Reasons**: Editorial

considering

*a)* that the agenda of this Conference included consideration of the
use of new digital technology in the maritime mobile service (MMS) in
the MF and HF bands;

*b)* that the introduction of new digital technology in the MMS shall
not disrupt the distress and safety communications in the MF and HF
bands including those established by the International Convention for
the Safety of Life at Sea (SOLAS), 1974, as amended;

*c)* that changes made in Appendix **17** should not prejudice the
future use of these frequencies or the capabilities of systems or new
applications required for use by the MMS;

*d)* that the need to use new digital technologies in the MMS is growing
rapidly;

*e)* that the use of new digital technology on HF and MF frequencies
allocated to the MMS will make it possible to better respond to the
emerging demand for new services;

*f)* that the HF bands allocated to the MMS for A1A Morse telegraphy and
narrow-band direct-printing are significantly under-utilized at present;

**USA/ /2 MOD**

[*g)* that the IMO supports replacing general communication
narrow-band-direct-printing with new HF data exchange technology capable
of working FEC NBDP,]{.underline}

[*h)* that the IMO supports the frequencies of Appendix **15,**
concerning NBDP, be retained for the foreseeable future.]{.underline}

*~~g~~[i]{.underline})* that the ITU Radiocommunication Sector is
conducting ongoing studies to improve the efficient use of these bands,

noting

[a)]{.underline} that different digital technologies have already been
developed and are in use in the MF and HF bands in several
radiocommunication services,

[b) that new maritime HF data transfer protocols have already been
developed to replace general narrow-band-direct-printing communications
using Appendix **17** frequencies,]{.underline}

noting also

that this conference has modified Appendix **17** to permit~~, on a
voluntary basis,~~ the use of various channels or bands identified in
the MF and HF bands for ~~initial testing and future~~[the]{.underline}
introduction of new digital technology,

resolves

1 that, in order to provide full worldwide interoperability of equipment
on ships, there should be one technology, or more than one interoperable
worldwide technology, implemented under Appendix **17**;

2 that, as soon as the ITU‑R studies are completed, a future competent
conference should consider necessary changes to Appendix **17** to
enable the use of new technology by the MMS,

invites ITU-R

to finalize studies currently ongoing:

-- to identify future requirements of the MMS;

-- to identify the technical characteristics necessary to facilitate use
of digital systems in the MF and HF bands allocated to the MMS, taking
into account any relevant ITU‑R Recommendations;

-- to identify the digital system(s) to be used in the MF/HF bands by
the MMS;

\- to identify any necessary modifications to the frequency table
contained within Appendix **17**;

[- identify maritime mobile HF spectrum for new systems, particularly in
the range 10 to 18 MHz.]{.underline}

[- identify additional spectrum resources in the range 9 to 10 MHz in
order to facilitate the introduction of new technologies in the mobile
maritime service, by overcoming the large gap between the 8 and 12 MHz
maritime mobile bands;]{.underline}

-- to propose a timetable for the introduction of new digital
technologies and any consequential changes to Appendix **17**;

-- to recommend how digital technologies can be introduced while
ensuring compliance with distress and safety requirements,

instructs the Secretary-General

to bring this Resolution to the attention of the International Maritime
Organization, the International Civil Aviation Organization, the
International Association of Marine Aids to Navigation and Lighthouse
Authorities and the Comité International Radio-Maritime.

**Reasons:** There are still several studies underway that need to be
completed prior to resolving this issue. These studies should be
completed prior to the next Conference, where the appropriate changes to
the RR can be considered.

**USA/ /3 SUP**

RESOLUTION 544 (WRC-03)

Identification of additional spectrum for the\
broadcasting service in the HF bands

**Reasons:** The impact to the Fixed and Mobile community is too severe
to allocate additional spectrum to the broadcasters that would, in fact,
come from bands assigned to these services. In addition, the long term
need for additional broadcasting spectrum is unknown.

**USA/ / 4 SUP**

RESOLUTION 729 (WRC-97)

Use of frequency adaptive systems in the MF and HF bands

**Reasons:** The studies under Resolution **729** have been completed.
These studies have indicated that no changes to the RR are required to
facilitate the introduction of adaptive techniques in the MF/HF bands.

**USA/ / 5 ADD**

RESOLUTION USA 1 (WRC-07)

Bandwidth Requirements for Advanced Fixed and Mobile HF Technologies in
the 3 -- 30 MHz Band

The World Radiocommunication Conference (Geneva, 2007),

considering

*a)* that there are a limited number of fixed and mobile 3 kHz bandwidth
channels, and many channel bandwidths are below 500 Hz, in the planned
portions of the 3-30 MHz band;

*b)* that trials of advanced fixed and mobile HF frequency systems have
demonstrated their feasibility and their associated spectrum efficiency;

*c)* that advanced fixed and mobile HF frequency systems require larger
channel bandwidth assignments which currently can only be accomplished
through channel bonding;

noting

that some advanced fixed and mobile HF frequency adaptive systems
utilize bandwidths of up to 12 kHz to support HF electronic messaging,
HF Internet, and HF file transfer;

resolves to invite ITU-R

1 to determine the feasibility of changing the Radio Regulations to
provide for the use of wider bandwidths to support advanced fixed and
mobile HF systems in the 3 -- 30 MHz band;

2 to bring the results of these studies to the attention of WRC‑10

**Reasons:** Urgent studies are required to determine the suitability of
changing the radio regulations to allow for wider bandwidths to the
fixed and mobile services to accommodate advanced HF adaptive systems.

**- FCC -**

[^1]: These are IWG-3's comments on a draft proposal originated by the
    Radio Conference Subcommittee (RCS) of the National
    Telecommunications and Information Administration, Document
    WAC/057(22.06.05).

[^2]: The revision marks on this document indicate changes to an earlier
    preliminary view from IWG-5, Document WAC/012(08.06.04).

[^3]: [In case it is decided to maintain the category of subregional
    systems, the treatment of submissions being proposed here for
    additional uses would apply to both additional uses and subregional
    systems.]{.underline}