**UNITED STATES**

**PRELIMINARY VIEWS ON WRC-07**

**WRC-2003 Agenda Item 1.4:** to consider frequency-related matters for
the future development of IMT‑2000 and systems beyond IMT‑2000 taking
into account the results of ITU‑R studies in accordance with
Resolution **228 (Rev.WRC‑03)**;

**ISSUE**: Resolution **228 (Rev.WRC-03)** invited the ITU-R to further
study the technical and operational issues associated with the future
development of IMT-2000 and systems beyond IMT-2000 and to develop
reports and recommendations as required in time for WRC-07. In
particular, the Resolution invited the ITU-R to:

-   Report the results of studies on spectrum requirements and potential
    frequency ranges that take into account:

-- the evolving user needs, including the growth in demand for IMT‑2000
services;

-- the evolution of IMT‑2000 and pre-IMT‑2000 systems through advances
in technology;

-- the bands currently identified for IMT‑2000;

-- the time-frame in which spectrum would be needed;

-- the period for migration from existing to future systems;

-- the extensive use of frequencies below those identified for IMT‑2000
in No. 5.317A;

-   And to conduct studies that consider:

-- the use of frequencies below those currently identified

-- the needs of developing countries, including the use of the satellite
component of IMT-2000, for suitable coverage in these countries

-- the results of sharing and compatibility studies with services to
which the potential bands are already allocated

**BACKGROUND**: WARC-92 identified the 1885-2025 MHz and 2110-2200 MHz
bands (230 megahertz of spectrum) allocated to the mobile service for
possible use on a worldwide basis by administrations wishing to
implement IMT-2000 systems in footnote 5.388. Additionally, WRC-2000
identified the 806-960 MHz band in footnote 5.317A and the 1710-1885 MHz
and 2500-2690 MHz bands in footnote 5.384A for possible IMT-2000 use.
Each administration would decide which portions of the identified bands
to use for IMT-2000.

In Res. 228 WRC-2000 invited the ITU-R to continue studies on overall
objectives, applications and technical and operational implementation
for the future development of IMT-2000 and systems beyond. It was also
invited to study spectrum requirements and potential frequency ranges
suitable for the future development of IMT-2000 and systems beyond
IMT-2000, and in what time frame such spectrum would be needed. Res. 228
also resolved that the future development of IMT-2000 and systems beyond
are to be reviewed by WRC-07, taking into consideration the results of
ITU-R studies presented to WRC-03. Those studies were not completed in
time for WRC-03.

At WRC-03, Res. 228 was modified to invite the ITU-R to conduct and
complete in time for WRC-07, the appropriate studies of technical and
operational issues, including spectrum requirements and potential
frequency ranges suitable for those systems and to develop appropriate
Recommendations. This would enable any necessary action to be taken by
WRC-07.

The need for the studies was driven by the perception that there may be
a need for new spectrum to accommodate:

-   the increasing demand for mobile services,

-   the development of higher bandwidth technologies, and

-   the potential to use mobile services to meet universal service
    requirements

WP 8F of ITU-R is developing Reports on service types and spectrum
requirements. It is also developing a Recommendation that evaluates
suitable frequency ranges, and in what timeframe such spectrum would be
needed. WP 8F is in the process of developing the spectrum calculation
methodology for systems beyond IMT-2000 and a new Recommendation on a
spectrum calculation methodology that takes into account current
systems, 3G systems, and systems beyond 3G. The completion of this work
by WP 8F is planned for March 2006, so that the studies and
Recommendation can be presented to WRC-07 for appropriate action.

**U.S. VIEW**: The U.S, supports conducting, and is participating, in
the studies in WP8F to ensure that the appropriate methodology for
estimating spectrum is employed; that anticipated services are
reasonable and realistic; and that the estimate of spectrum needs is
based on these reasonable methodologies/services. The U.S. also
recognizes the special needs of developing areas of the world.

In determining the need for identifying additional spectrum, already
identified spectrum and the need to protect existing services must be
taken into account.

As studies are conducted in WP8F, the U.S. will determine if it will
support the identification of any additional bands for the deployment of
these systems. (June 2004)

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