+----------+------------------------------------+----------+----------+
| **XII    |                                    | **OEA/   |          |
| MEETING  |                                    | Ser.L/XV |          |
| OF       |                                    | II.4.2** |          |
| PER      |                                    |          |          |
| MANENT** |                                    | **C      |          |
|          |                                    | CP.II-RA |          |
| **CONS   |                                    | DIO/doc. |          |
| ULTATIVE |                                    | 1        |          |
| C        |                                    | 691/08** |          |
| OMMITTEE |                                    |          |          |
| II:**    |                                    | **29     |          |
|          |                                    | August   |          |
| **RADIO  |                                    | 2008**   |          |
| COMMUNIC |                                    |          |          |
| ATIONS** |                                    | **O      |          |
|          |                                    | riginal: |          |
| **I      |                                    | E        |          |
| NCLUDING |                                    | nglish** |          |
| BROADC   |                                    |          |          |
| ASTING** |                                    |          |          |
|          |                                    |          |          |
| **S      |                                    |          |          |
| eptember |                                    |          |          |
| 16 to    |                                    |          |          |
| 19,      |                                    |          |          |
| 2008**   |                                    |          |          |
|          |                                    |          |          |
| **Mar    |                                    |          |          |
| del      |                                    |          |          |
| Plata,   |                                    |          |          |
| Arg      |                                    |          |          |
| entina** |                                    |          |          |
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|          |                                    |          |          |
+----------+------------------------------------+----------+----------+
|          | **PRELIMINARY VIEWS FOR WRC-11**   |          |          |
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|          | **(Item on the Agenda: 4.1)**      |          |          |
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|          | **(Document submitted by the       |          |          |
|          | delegation of United States of     |          |          |
|          | America)**                         |          |          |
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The United States of America submits the attached Preliminary Views on
WRC-11 Agenda Items 1.5, 1.8, 1.12 and 1.20 for consideration of CITEL
PCC II. The U.S. looks forward to discussion on these views at the
twelfth meeting of PCC II.

TABLE OF CONTENTS

[AGENDA ITEM 1.5: 3](#__RefHeading___Toc208303870)

[AGENDA ITEM 1.8: 4](#__RefHeading___Toc208303871)

[AGENDA ITEM 1.12: 5](#__RefHeading___Toc208303872)

[AGENDA ITEM 1.20: 7](#__RefHeading___Toc208303873)

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[]{#__RefHeading___Toc208303870 .anchor}**AGENDA ITEM 1.5:** *to
consider worldwide/regional harmonization of spectrum for electronic
news gathering (ENG), taking into account the results of ITU-R studies,
in accordance with Resolution **954 (WRC-07);***

**ISSUE**:

To review the needs of ENG systems, to decide if harmonization is
possible, and in what potential bands such harmonization is appropriate.
This issue may also lead to requests from administrations for
consideration of additional spectrum allocations.

**BACKGROUND**:

The issue of spectrum for ENG applications has been a long-standing
issue within the ITU and has been prominent for several WRC study
cycles. WRC-07 decided to include an agenda item that would look at
possible global/regional harmonization. The need for global/regional
harmonization must also take into account advances in technology, which
may account for operations that are more efficient.

There are several different broadcasting services, which operate under
the umbrella of ENG and each will have its own unique requirements for
harmonization based on deployment, technical parameters, and user
density.

**U.S. VIEW**:

The United States supports reviewing the requirements developed in WP 6A
to determine if harmonization is feasible on a regional/global basis for
ENG systems. The United States supports studies on technologies for ENG
that maximize efficient and flexible use of frequencies at the national
level in lieu of global/regional identification of frequency bands. If
studies demonstrate that such harmonization is required and feasible,
the United States supports focusing on studying the impact of
identifying in the Radio Regulations harmonized spectrum for ENG systems
on the existing services.

[]{#__RefHeading___Toc208303871 .anchor}**AGENDA ITEM 1.8:** *to
consider the progress of ITU-R studies concerning the technical and
regulatory issues relative to the fixed service in the bands between 71
GHz and 238 GHz, taking into account Resolutions **731 (WRC-2000)** and
**732 (WRC-2000);***

**ISSUE**:

The intent of this agenda item is to study compatibility between passive
and active services and develop sharing criteria for co-primary active
services in bands above 71 GHz. In particular, it is important to study
the spectrum requirements for active services for which the technology
will be commercially available at a future date. Based on proposals and
documentation available at WRC-07 it is likely that some administrations
may seek to develop sharing criteria for the radio regulations in the
form of pfd limits on space service downlinks.

**BACKGROUND**:

WRC-2000 adopted Resolutions **731** and **732** as part of the
conference decisions on the allocation of frequency bands above 71 GHz
to the Earth exploration-satellite (passive) and radio astronomy
services resulting in an overall rearrangement of the allocation tables
in Article **5** of the Radio Regulations. These resolutions became
necessary because the ITU-R was not able to fully evaluate for the
active services (e.g., fixed, mobile, radiolocation, etc.), the new
arrangement of their allocations vis-à-vis the passive allocations or
each other. Therefore, the conference decided to adopt these two
resolutions providing for further study and possible action in the
future when active services technology and emerging requirements become
better known. Since that time, millimeter wave spectrum above 71 GHz has
become the subject of increasing interest for commercial use due to its
unique propagation characteristics and the wide bandwidth available for
carrying telecommunications traffic. New technologies are now emerging
that offer the possibility of using these higher frequency bands for
fixed wireless applications, taking advantage of the wide bandwidths
available to support applications such as extremely high speed data
transmission (e.g., data rates in the 1 to 10 Gbps range) for short
distance (e.g., \< 1-2 km). Several administrations have made or are
making provisions for such wideband terrestrial fixed wireless
applications.

In a somewhat unique set of circumstances, WRC-07 did not adopt a
Resolution to define this agenda item. Therefore, the definition and
scope of the agenda item is unclear.

**U.S. VIEW**:

The United States supports ITU-R studies concerning the fixed service
bands between 71 and 238 GHz. The United States supports protection of
the existing services allocated within this frequency range.

[]{#__RefHeading___Toc208303872 .anchor}**AGENDA ITEM 1.12:** *to
protect the primary services in the band 37-38 GHz from interference
resulting from aeronautical mobile service operations, taking into
account the results of ITU-R studies in accordance with Resolution **754
(WRC-07)***

**ISSUE**:

Resolution **754** **(WRC-07)**, "Consideration of modification of the
aeronautical component of the mobile service allocation in the 37-38 GHz
band for protection of other primary services in the band," calls for
consideration of the compatibility of the aeronautical mobile service
(AMS) with other primary services in the band 37-38 GHz in order to
determine appropriate compatibility criteria for inclusion within the
Radio Regulations or an appropriate modifications to the Table of
Frequency Allocations.

**BACKGROUND**:

Space research service (SRS) earth station receivers are being
implemented in the 37-38 GHz band to support manned missions, for both
near Earth and deep space distances. Use of the wider bandwidth
available in the 37-38 GHz band is required to support the increasing
data requirements of planned manned missions.

Preliminary analysis within ITU-R Working Party 7B has shown that
aeronautical mobile stations (assuming parameters from lower bands) are
capable of causing unacceptable levels of interference for significant
periods whenever they are within-line-of-sight of an SRS receiving earth
station. In particular, SRS earth station receivers operating in the
37-38 GHz band have a very low interference threshold. Protection
criteria applicable to these SRS Earth stations operating with either
deep space or non-deep-space missions are contained in ITU-R
recommendations. The operation of an aeronautical mobile station
exceeding the protection criteria of the SRS for an extended period
could jeopardize the success of a manned or scientific space mission.
WRC-07 approved this agenda item based on information that no
aeronautical mobile systems operate or plan to operate in the 37-38 GHz
band.

CITEL proposed this agenda item at WRC-07 with the intent to exclude the
AMS from the 37-38 GHz band in order to protect the other services using
this band, particularly the space research service. Preliminary studies
in the ITU have shown that sharing with traditional AMS systems is not
feasible if they were to operate in the band. However, since WRC-07
adopted this agenda item, the aviation industry is considering several
candidate bands, which includes the 37-38 GHz band, for a newly
identified airborne application. If studies show this application can
operate without exceeding applicable interference thresholds, it may be
feasible to establish sharing criteria that protects the other primary
services in the band 37-38 GHz.

Resolution **754** **(WRC-07)** calls for sharing studies between the
AMS and the SRS, fixed service, FSS and MS in the band 37-38 GHz to
determine appropriate criteria to ensure the protection of the other
primary services from AMS operations in the band 37-38 GHz.

**U.S. VIEW**:

The United States supports sharing studies in the band 37-38 GHz to
determine appropriate compatibility criteria for the AMS. If the studies
show that sharing is feasible with particular AMS applications, support
the establishment of sharing criteria that both protects the other
primary services in the band 37-38 GHz, as well as allows for such
compatible AMS applications. However, if the studies show that sharing
is not feasible, support the suppression of the AMS from the 37-38 GHz
band.

[]{#__RefHeading___Toc208303873 .anchor}**AGENDA ITEM 1.20:** *To
consider the results of ITU-R studies and spectrum identification for
gateway links for high altitude platform stations (HAPS) in the range
between 5 850-7 075 MHz in order to support operations in the fixed and
mobile services, in accordance with Resolution **734 (Rev.WRC-07)***

**ISSUE**:

Different segments of the 5 850-7 075 MHz frequency band are utilized
for fixed, fixed-satellite, and mobile services. Resolution **734
(WRC-07)** proposes to study spectrum identification for gateway links
for high-altitude platform stations in the range from 5 850 to 7 075
MHz. The study effort is to identify two channels of 80 MHz each for
gateway links for HAPS in the range from 5 850 to 7 075 MHz, in bands
already allocated to the fixed service, while ensuring the protection of
existing services.

**BACKGROUND**:

Previous WRC efforts (WRC-97, WRC-2000) had undertaken initiative to
examine HAPS types of applications in various frequency bands. Due to
the fact that all previous studies were carried out in frequency bands
significantly higher than 5 850-7 075 MHz, new electromagnetic
compatibility (EMC) studies will have to be initiated and conducted. The
EMC studies will have to address HAPS ability to coexist with mobile,
fixed satellite services as well as with radiolocation service, which
exists in adjacent frequency bands.

Land-based and maritime radiolocation systems operate in the lower
adjacent frequency band. Fixed, mobile, and fixed-satellite systems also
operate in the 5 850-7 075 MHz band. Remote sensing systems operate in
the 6 475-7 075 MHz band.

**U.S. VIEW**:

The United States supports the studies for potential HAPS identification
in the 5 850 -- 7 075 MHz band. The identification of any spectrum for
HAPS in the 6 GHz band should not constrain the use of the 5 850-7 075
MHz band or the adjacent bands by any application of the services to
which they are allocated.