+-----+--------------------------------------+--------------+---------+
| ### |                                      | **OEA/Ser.   |         |
|  IX |                                      | L/XVII.4.2** |         |
|  ME |                                      |              |         |
| ETI |                                      | **           |         |
| NG  |                                      | CCP.II-RADIO |         |
| OF  |                                      | /doc.1402/07 |         |
| PER |                                      | rev.1**      |         |
| MAN |                                      |              |         |
| ENT |                                      | **4 May      |         |
|     |                                      | 2007**       |         |
| **  |                                      |              |         |
| CON |                                      | **Original:  |         |
| SUL |                                      | English**    |         |
| TAT |                                      |              |         |
| IVE |                                      |              |         |
| COM |                                      |              |         |
| MIT |                                      |              |         |
| TEE |                                      |              |         |
| II  |                                      |              |         |
| :** |                                      |              |         |
|     |                                      |              |         |
| **  |                                      |              |         |
| RAD |                                      |              |         |
| IOC |                                      |              |         |
| OMM |                                      |              |         |
| UNI |                                      |              |         |
| CAT |                                      |              |         |
| ION |                                      |              |         |
| S** |                                      |              |         |
|     |                                      |              |         |
| **  |                                      |              |         |
| INC |                                      |              |         |
| LUD |                                      |              |         |
| ING |                                      |              |         |
| BR  |                                      |              |         |
| OAD |                                      |              |         |
| CAS |                                      |              |         |
| TIN |                                      |              |         |
| G** |                                      |              |         |
|     |                                      |              |         |
| *   |                                      |              |         |
| *Ap |                                      |              |         |
| ril |                                      |              |         |
| 16  |                                      |              |         |
| to  |                                      |              |         |
| 20, |                                      |              |         |
| 200 |                                      |              |         |
| 7** |                                      |              |         |
|     |                                      |              |         |
| ##  |                                      |              |         |
| # S |                                      |              |         |
| an  |                                      |              |         |
| Sal |                                      |              |         |
| vad |                                      |              |         |
| or, |                                      |              |         |
|  El |                                      |              |         |
|  Sa |                                      |              |         |
| lva |                                      |              |         |
| dor |                                      |              |         |
+-----+--------------------------------------+--------------+---------+
|     |                                      |              |         |
+-----+--------------------------------------+--------------+---------+
|     | **DRAFT INTER-AMERICAN PROPOSALS FOR |              |         |
|     | WORKING SUB-GROUP 2 OF THE WORKING   |              |         |
|     | GROUP FOR THE PREPARATION FOR        |              |         |
|     | WRC-07**                             |              |         |
+-----+--------------------------------------+--------------+---------+
|     | **(Item on the Agenda: 4.1)**        |              |         |
+-----+--------------------------------------+--------------+---------+
|     | **(Document submitted by the         |              |         |
|     | Coordinator)**                       |              |         |
+-----+--------------------------------------+--------------+---------+

**Table of Contents**

[STRUCTURE OF WSG-2 3](#__RefHeading___Toc165541642)

[Agenda item 1.8 4](#__RefHeading___Toc165541643)

[]{#__RefHeading___Toc165541642 .anchor}**STRUCTURE OF WSG-2**

+-----------+----------------------------+----------------------------+
| **Agenda  | **Coordinator**            | **Coordinator Alternate**  |
| Items**   |                            |                            |
+-----------+----------------------------+----------------------------+
| 1.7, 1.8, | Rubén Arenas               | claudio Palomares Sartor   |
| 1.10,     |                            |                            |
| 1.11,     | Venezuela                  | Peru                       |
| 1.17,     |                            |                            |
| 1.18,     | <rarenas@conatel.gov.ve>   | <cpalomares@mtc.gob.pe>    |
| 1.19,     |                            |                            |
| 1.21      |                            |                            |
+-----------+----------------------------+----------------------------+

+-----------+----------------------------+----------------------------+
| **Agenda  | **Rapporteur**             | **Rapporteur Alternate**   |
| Item**    |                            |                            |
+===========+============================+============================+
| 1.7       |                            | Juan Masciotra             |
|           |                            |                            |
|           |                            | Argentina                  |
|           |                            |                            |
|           |                            | <jmasciotra@cnc.gov.ar>    |
+-----------+----------------------------+----------------------------+
| 1.8       | Leslie Green               | Eduardo Gabelloni          |
|           |                            |                            |
|           | Uruguay                    | Argentina                  |
|           |                            |                            |
|           | <lgreen@ursec.gub.uy>      | <g                         |
|           |                            | abelloe@telefonica.com.ar> |
+-----------+----------------------------+----------------------------+
| 1.10      | Claudio Palomares Sartor   | Juan Masciotra             |
|           |                            |                            |
|           | Peru                       | Argentina                  |
|           |                            |                            |
|           | <cpalomares@mtc.gob.pe>    | <jmasciotra@cnc.gov.ar>    |
+-----------+----------------------------+----------------------------+
| 1.11      | Rita Hermoso               |                            |
|           |                            |                            |
|           | Venezuela                  |                            |
|           |                            |                            |
|           | <rhermoso@conatel.gov.ve>  |                            |
+-----------+----------------------------+----------------------------+
| 1.17      | Country: Ecuador           | Juan Masciotra             |
|           |                            |                            |
|           |                            | Argentina                  |
|           |                            |                            |
|           |                            | <jmasciotra@cnc.gov.ar>    |
+-----------+----------------------------+----------------------------+
| 1.18      | Jerry Conner               |                            |
|           |                            |                            |
|           | United States of America   |                            |
|           |                            |                            |
|           | <jerry.conner@itt.com>     |                            |
+-----------+----------------------------+----------------------------+
| 1.19      | Sueli Matos                | Héctor Budé                |
|           |                            |                            |
|           | Brazil                     | Uruguay                    |
|           |                            |                            |
|           | <sueli@anatel.gov.br>      | <hbude@ursec.gub.uy>       |
+-----------+----------------------------+----------------------------+
| 1.21      | Ralph Puckett              |                            |
|           |                            |                            |
|           | United States of America   |                            |
|           |                            |                            |
|           | <ralph.puckett@disa.mil>   |                            |
+-----------+----------------------------+----------------------------+

[]{#__RefHeading___Toc165541643 .anchor}**Agenda item 1.8**

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).**

**Proposals for Agenda item 1.8**

**Proposals for modifications to two footnotes and Resolution 145
(WRC-03)**

**Background information**

**Resolution 145:** WRC-2000 decided to adopt provisions for the
operation of HAPS on a non-interfering/non-protected basis in the bands
27.5-28.35 and 31-31.3 GHz in Region 3, but did not allow operation in
the entire bands until studies could be completed to determine how best
to protect existing services in these and nearby frequency bands. WRC-03
further refined these provisions by deciding to limit HAPS operation to
300 MHz in a specified direction in each of these two bands, retaining
the requirement for HAPS to operate on a non-interfering/non-protected
basis in these two 300 MHz segments, and adopting Resolution **145
(WRC-03)**, which created the possibility of allowing Region 2
administrations to advise the Radiocommunications Bureau of their intent
to implement HAPS systems within the bands 27.5-28.35 and 31-31.3 GHz.
Administrations intending to implement HAPS in these bands are to seek
the explicit agreement of concerned administrations in accordance with
*resolves* 4 of this Resolution.

Under Resolution **145 (WRC-03)**, the use of HAPS within the
fixed-service allocations within the 27.5-28.35 GHz and 31-31.3 GHz
bands must be limited to 300 MHz in each band, and is subject to the
condition that such use must not cause harmful interference to, nor
claim protection from, other stations of services operating in
accordance with the Table of Frequency Allocations of Article **5**.
Furthermore, the Resolution specifies that the development of these
other services shall proceed without constraints by HAPS operating
pursuant to the Resolution. This Resolution also calls for the
identification of a common 300 MHz within the 27.5-28.35 GHz band for
use by HAPS. With respect to the band 31-31.3 GHz, Resolution **145
(WRC-03)** specifies that systems using HAPS in Region 2 in the band
31-31.3 GHz must not cause harmful interference to the radio astronomy
service having a primary allocation in the band 31.3-31.8 GHz, taking
into account the protection criterion given in Recommendation
ITU‑R RA.769. The Resolution contains limits on the level of unwanted
power density into the HAPS ground station antenna in the band
31.3-31.8 GHz in order to ensure the protection of satellite passive
services.

**Proposals**

**MOD** DIAP/1.8/1

**Support:** Canada, United States of America, Mexico, Paraguay, Uruguay

\[Antigua and Barbuda\], \[Argentina\], \[Bahamas\], \[Barbados\],
\[Belize\], \[Bolivia\], \[Brazil\], \[Chile\], \[Colombia\], \[Costa
Rica\], \[Commonwealth of Dominica\], \[Dominican Republic\],
\[Ecuador\], \[El Salvador\], \[Grenada\], \[Guatemala\], \[Guyana\],
\[Haiti\], \[Honduras\], \[Jamaica\], \[Nicaragua\], \[Panama\],
\[Peru\], \[Saint Lucia\], \[Saint Vincent and the Grenadines\], \[Saint
Kitts and Nevis\], \[Suriname\], \[Trinidad and Tobago\], \[Venezuela\]

**5.537A** In Bhutan, Korea (Rep. of), the Russian Federation,
Indonesia, Iran (Islamic Republic of), Japan, Kazakhstan, Lesotho,
Malaysia, Maldives, Mongolia, Myanmar, Uzbekistan, Pakistan, the
Philippines, Kyrgyzstan, the Dem. People's Rep. of Korea, Sri Lanka,
Thailand and Viet Nam, the allocation to the fixed service in the band
27.5-2[7.]{.underline}8~~.35~~ GHz may also be used by high altitude
platform stations (HAPS). ~~The use of HAPS within the band 27.5-28.35
GHz is limited, within the territory of the countries listed above, to a
single 300 MHz sub-band.~~ Such use of 300 MHz of the fixed-service
allocation by HAPS in the above countries is further limited to
operation in the HAPS-to-ground direction and shall not cause harmful
interference to, nor claim protection from, other types of fixed-service
systems or other co-primary services. Furthermore, the development of
these other services shall not be constrained by HAPS. See Resolution
**145 ([Rev.]{.underline} WRC-0[7]{.underline}~~3~~)**.
**(WRC-0[7]{.underline}~~3~~)**

**Reason:** WRC-03 called for the identification of a common 300 MHz
band, within the 27.5-28.35 GHz band, for use by HAPS in those countries
wishing to implement such service. Such identification will help to ease
the implementation and harmonization of HAPS in those countries.
Identifying the lowest 300 MHz segment for potential use by HAPS
maximizes the amount of contiguous FSS spectrum in the 27.5-30.0 GHz
band that would not be impaired domestically in any way as a consequence
of any potential use of the band by HAPS.

**MOD** DIAP/1.8/2

**Support:** Canada, United States of America, Mexico, Paraguay, Uruguay

\[Antigua and Barbuda\], \[Argentina\], \[Bahamas\], \[Barbados\],
\[Belize\], \[Bolivia\], \[Brazil\], \[Chile\], \[Colombia\], \[Costa
Rica\], \[Commonwealth of Dominica\], \[Dominican Republic\],
\[Ecuador\], \[El Salvador\], \[Grenada\], \[Guatemala\], \[Guyana\],
\[Haiti\], \[Honduras\], \[Jamaica\], \[Nicaragua\], \[Panama\],
\[Peru\], \[Saint Lucia\], \[Saint Vincent and the Grenadines\], \[Saint
Kitts and Nevis\], \[Suriname\], \[Trinidad and Tobago\], \[Venezuela\]

**5.543A** In Bhutan, Korea (Rep. of), the Russian Federation,
Indonesia, Iran (Islamic Republic of), Japan, Kazakhstan, Lesotho,
Malaysia, Maldives, Mongolia, Myanmar, Uzbekistan, Pakistan, the
Philippines, Kyrgyzstan, the Dem. People's Rep. of Korea, Sri Lanka,
Thailand and Viet Nam, the allocation to the fixed service in the band
31-31.3 GHz may also be used by systems using high altitude platform
stations (HAPS) in the ground-to-HAPS direction. The use of the band
31-31.3 GHz by systems using HAPS is limited to the territory of the
countries listed above and shall not cause harmful interference to, nor
claim protection from, other types of fixed-service systems, systems in
the mobile service and systems operated under No. **5.545**.
Furthermore, the development of these services shall not be constrained
by HAPS. Systems using HAPS in the band 31-31.3 GHz shall not cause
harmful interference to the radio astronomy service having a primary
allocation in the band 31.3-31.8 GHz, taking into account the protection
criterion as given in Recommendation ITU-R RA.769. In order to ensure
the protection of satellite passive services, the level of unwanted
power density into a HAPS ground station antenna in the band 31.3-31.8
GHz shall be limited to −106 dB(W/MHz) under clear-sky conditions, and
may be increased up to −100 dB(W/MHz) under rainy conditions to
[mitigate against fading due to]{.underline}~~take account of~~ rain
~~attenuation~~, provided the effective impact on the passive satellite
does not exceed the impact under clear-sky conditions ~~as given
above~~. See Resolution **145 ([Rev.]{.underline}
WRC-0[7]{.underline}~~3~~)**. (WRC-0[7]{.underline}~~3~~)

**Reason:** Revisions to text add clarity. Consequential to the changes
to Resolution **145** in **DIAP/1.8/3**

**MOD** DIAP/1.8/3

**Support:** Canada, United States of America, Mexico, Paraguay, Uruguay

\[Antigua and Barbuda\], \[Argentina\], \[Bahamas\], \[Barbados\],
\[Belize\], \[Bolivia\], \[Brazil\], \[Chile\], \[Colombia\], \[Costa
Rica\], \[Commonwealth of Dominica\], \[Dominican Republic\],
\[Ecuador\], \[El Salvador\], \[Grenada\], \[Guatemala\], \[Guyana\],
\[Haiti\], \[Honduras\], \[Jamaica\], \[Nicaragua\], \[Panama\],
\[Peru\], \[Saint Lucia\], \[Saint Vincent and the Grenadines\], \[Saint
Kitts and Nevis\], \[Suriname\], \[Trinidad and Tobago\], \[Venezuela\]

RESOLUTION 145 ([Rev.]{.underline} WRC-0[7]{.underline}~~3~~)

**Potential use of the bands 27.5-2[7.]{.underline}8~~.35~~ GHz and
31-31.3 GHz**

**by high altitude platform stations (HAPS)**

**in the fixed service**

The World Radiocommunication Conference (Geneva,
200[7]{.underline}~~3~~),

*considering*

*a)* that WRC-97 made provision for the operation of HAPS, also known as
stratospheric repeaters, within a 2 300 MHz portion of the
fixed-service allocation in the bands 47.2-47.5 GHz and 47.9-48.2 GHz;

*b)* that WRC-97 adopted No. **4.15A** specifying that transmissions to
or from HAPS shall be limited to the bands specifically identified in
Article **5**;

*c)* that at WRC-2000, several countries in Region 3 and one country in
Region 1 expressed a need for a lower frequency band for HAPS due to the
excessive rain attenuation that occurs at 47 GHz in these countries;

*d)* that ~~at the present Conference,~~[some]{.underline} countries in
Region 2 [have]{.underline} also expressed an interest in using a
frequency range lower than those referred to in *considering a)*;

*e)* that, in order to accommodate the need expressed by the countries
referred to in *considering c)*, WRC-2000 adopted Nos. **5.537A** and
**5.543A**, which were modified at [WRC-03 and then again at
WRC-07]{.underline}~~this Conference~~ to permit the use of HAPS in the
fixed service ~~within 300 MHz of spectrum~~ in the band
27.5-2[7.]{.underline}8~~.35~~ GHz and in the band 31-31.3 GHz in
certain Region 3 countries and in one Region 1 country on a non-harmful
interference, non-protection basis;

*f)* that the bands 27.5-2[7.]{.underline}8~~.35~~ GHz and 31-31.3 GHz
are already heavily used or planned to be used by a number of different
services and a number of other types of applications in the fixed
service;

*g)* that while the decision to deploy HAPS can be taken on a national
basis, such deployment may affect neighbouring administrations,
particularly in small countries;

*h)* that the 31.3-31.8 GHz band is allocated to the radio astronomy,
Earth exploration-satellite (passive) and space research (passive)
services, and that [WRC-03]{.underline}~~this Conference~~ amended No.
**5.543A** to specify signal levels that would protect satellite passive
services and radio astronomy stations;

*i)* that ITU-R has conducted studies dealing with sharing between
systems using HAPS in the fixed service and other types of systems in
the fixed service in the bands 27.5-2[7.]{.underline}8~~.35~~ GHz and
31-31.3 GHz leading to Recommendation ITU-R F.1609;

*j)* that results of some ITU-R studies indicate that, in the bands
27.5-2[7.]{.underline}8~~.35~~ GHz and 31-31.3 GHz, sharing between
fixed-service systems using HAPS and other conventional fixed-service
systems in the same area will require appropriate interference
mitigation techniques to be developed and implemented;

*k)* that ITU-R has conducted studies dealing with compatibility between
systems using HAPS and the passive services in the 31.3-31.8 GHz band
leading to Recommendations ITU-R F.1570 and ITU-R F.1612;

*l)* that ITU-R has produced Recommendation ITU-R SF.1601 containing
~~a~~ methodolog[ies]{.underline}~~y~~ for evaluating interference from
the fixed-service system using HAPS into GSO FSS systems in the band
27.5-2[7.]{.underline}8~~.35~~ GHz ~~in order to facilitate further
studies~~;

*m)* that HAPS technical ~~and regulatory~~ issues should continue to be
studied in order to determine appropriate measures for protecting the
fixed service and other co-primary services in the band
27.5-2[7.]{.underline}8~~.35~~ GHz;

~~*n)* that pending the completion of studies, administrations in Region
2 may wish to consider deployment of HAPS systems in the fixed service
within 300 MHz of spectrum at 27.5-28.35 GHz and in 300 MHz of spectrum
at 31-31.3 GHz and to have some provisional means by which to authorize
such use of HAPS in their territories,~~

*~~noting~~*

~~that systems using HAPS may operate in the bands 27.5-28.35 GHz and
31-31.3 GHz under No. **4.4**,~~

*resolves*

~~1 to invite WRC-07 to review the results of the studies specified
below and consider appropriate refinement of the regulatory provisions
for the use of HAPS within the bands 27.5-28.35 GHz and 31-31.3 GHz;~~

[1]{.underline}~~2~~ that, notwithstanding No. **4.15A**, in Region 2
the use of HAPS within the fixed-service allocations within the
27.5-2[7.]{.underline}8~~.35~~ GHz and 31-31.3 GHz bands ~~shall be
limited, pending the completion of the studies specified in *invites
ITU-R* 1 below, to 300 MHz in each band, that such use~~ shall not cause
harmful interference to, nor claim protection from, other stations of
services operating in accordance with the Table of Frequency Allocations
of Article **5**, and, further, that the development of these other
services shall proceed without constraints by HAPS operating pursuant to
this Resolution;

[2]{.underline}~~3~~ that~~, pursuant to *resolves* 2 above,~~ any use
by HAPS of the fixed-service allocation at
27.5-2[7.]{.underline}8~~.35~~ GHz [pursuant to *resolves*
1]{.underline} shall be limited to operation in the HAPS-to-ground
direction, and that any use by HAPS of the fixed-service allocation at
31-31.3 GHz shall be limited to operation in the ground-to-HAPS
direction;

[3]{.underline}~~4~~ that~~, on a provisional basis,~~ the
administrations listed in Nos. **5.537A** and **5.543A** and those
administrations in Region 2 which intend to implement systems using HAPS
in the fixed service in the bands 27.5-2[7.]{.underline}8~~.35~~ GHz and
31-31.3 GHz shall seek explicit agreement of concerned administrations
with regard to their primary services to ensure that the conditions in
Nos. **5.537A, 5.543A**, *resolves [1]{.underline}*~~2~~ and *resolves
[4]{.underline}*~~5~~ are met;

[4]{.underline}~~5~~ that systems using HAPS in the band 31-31.3 GHz, in
accordance with *resolves [1]{.underline}*~~2~~ above, shall not cause
harmful interference to the radio astronomy service having a primary
allocation in the band 31.3-31.8 GHz, taking into account the protection
criterion given in Recommendation ITU-R RA.769. In order to ensure the
protection of satellite passive services, the level of unwanted power
density into the HAPS ground station antenna in the band 31.3-31.8 GHz
shall be limited to --106 dB(W/MHz) under clear-sky conditions and may
be increased up to -100 dB(W/MHz) under rainy conditions to [mitigate
against fading due to]{.underline}~~take account of~~
rain~~attenuation~~, provided that effective impact on the passive
satellite does not exceed the impact under clear-sky conditions as given
above,

*invites ITU-R*

~~1 to continue to conduct studies, as a matter of urgency, and taking
into account the requirements of other fixed-service systems and other
services, on the feasibility of identifying a suitable and preferably a
common 300 MHz segment of the band 27.5-28.35 GHz paired with the 300
MHz band at 31-31.3 GHz, for use by HAPS in the countries listed in Nos.
**5.537A** and **5.543A** or countries in Region 2 planning provisional
operation;~~

[1]{.underline}~~2~~ to develop one or more ITU-R Recommendations
addressing technical [compatibility]{.underline}~~sharing criteria~~ or
HAPS system design conditions that may be necessary to ensure that HAPS
applications in the fixed service operate successfully on a non-harmful
interference, non-protected basis in the bands
27.5-2[7.]{.underline}8~~.35~~ GHz and 31-31.3 GHz;

[2]{.underline}~~3~~ to complete studies on the [technical
compatibility]{.underline}~~interference criteria~~ and methodology for
evaluating interference from the downlink (HAPS-to-ground direction) of
systems using HAPS to the uplink of the GSO satellite networks in the
FSS within the band 27.5-2[7.]{.underline}8~~.35~~ GHz, taking into
account recommendation ITU-R SF.1601 for the situations referred to in
*considering l)*;

~~4 to study the regulatory provisions that might be needed in order to
address those cases where the deployment of HAPS in the fixed service in
the bands 27.5-28.35 GHz and 31-31.3 GHz in the territory of one
administration may affect other administrations;~~

[3]{.underline}~~5~~ to continue to carry out studies on the appropriate
interference mitigation techniques for the situations referred to in
*considering j)*,

*invites administrations*

to advise the Radiocommunication Bureau of their intention to implement
HAPS systems within the band 27.5-2[7.]{.underline}8~~.35~~ GHz and in
the band 31-31.3 GHz, whether in countries listed in Nos. **5.537A** and
**5.543A** or in accordance with *resolves [1]{.underline}*~~2~~, and to
specify the [technical characteristics of the systems they intend to
implement]{.underline}~~frequency bands (up to 300 MHz each within the
27.5-28.35 GHz and 31-31.3 GHz bands) they intend to use for such
systems~~,

*instructs the Director of the Radiocommunication Bureau*

to publish in the International Frequency Information Circular (BR IFIC)
a list of administrations who have so advised, and to publish the
information on HAPS implementation received from administrations which
intend to implement systems using HAPS in the fixed service in the bands
27.5-2[7.]{.underline}8~~.35~~ GHz and 31-31.3 GHz.

**Reason:** Changes to frequency ranges throughout, deletion of *invites
1,* and other minor changes are consequential to proposal
**DIAP/1.8/1.** Deletion of *noting* is made recognizing that this is a
simple statement of fact. Deletion of *invites 4* is made recognizing
the retention of old *resolves 4,* now *resolves 3*. Changes to *invites
administrations* are proposed to clarify that administrations are to
supply technical details of their systems along with an indication of
their intention to implement HAPS in these frequency bands. The changes
also bring the Resolution up to date.

**Proposals for modifications related to Resolution 122 (WRC-03)**

**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 a new
resolution that is referenced in No. **5.552A** of 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.

#### SUP DIAP/1.8/4

**Support:** Canada, United States of America, Mexico, Paraguay, Uruguay

\[Antigua and Barbuda\], \[Argentina\], \[Bahamas\], \[Barbados\],
\[Belize\], \[Bolivia\], \[Brazil\], \[Chile\], \[Colombia\], \[Costa
Rica\], \[Commonwealth of Dominica\], \[Dominican Republic\],
\[Ecuador\], \[El Salvador\], \[Grenada\], \[Guatemala\], \[Guyana\],
\[Haiti\], \[Honduras\], \[Jamaica\], \[Nicaragua\], \[Panama\],
\[Peru\], \[Saint Lucia\], \[Saint Vincent and the Grenadines\], \[Saint
Kitts and Nevis\], \[Suriname\], \[Trinidad and Tobago\], \[Venezuela\]

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
**DIAP** below).

**MOD** DIAP/1.8/5

**Support:** Canada, United States of America, Mexico, Paraguay, Uruguay

\[Antigua and Barbuda\], \[Argentina\], \[Bahamas\], \[Barbados\],
\[Belize\], \[Bolivia\], \[Brazil\], \[Chile\], \[Colombia\], \[Costa
Rica\], \[Commonwealth of Dominica\], \[Dominican Republic\],
\[Ecuador\], \[El Salvador\], \[Grenada\], \[Guatemala\], \[Guyana\],
\[Haiti\], \[Honduras\], \[Jamaica\], \[Nicaragua\], \[Panama\],
\[Peru\], \[Saint Lucia\], \[Saint Vincent and the Grenadines\], \[Saint
Kitts and Nevis\], \[Suriname\], \[Trinidad and Tobago\], \[Venezuela\]

**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
[Resolution **VBANDHAPS (WRC-07)**]{.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. Resolution VBANDHAPS is a new
resolution (see DIAP 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."

**Proposal**

**ADD** DIAP/1.8/6

**Support:** Canada, United States of America, Mexico, Paraguay, Uruguay

\[Antigua and Barbuda\], \[Argentina\], \[Bahamas\], \[Barbados\],
\[Belize\], \[Bolivia\], \[Brazil\], \[Chile\], \[Colombia\], \[Costa
Rica\], \[Commonwealth of Dominica\], \[Dominican Republic\],
\[Ecuador\], \[El Salvador\], \[Grenada\], \[Guatemala\], \[Guyana\],
\[Haiti\], \[Honduras\], \[Jamaica\], \[Nicaragua\], \[Panama\],
\[Peru\], \[Saint Lucia\], \[Saint Vincent and the Grenadines\], \[Saint
Kitts and Nevis\], \[Suriname\], \[Trinidad and Tobago\], \[Venezuela\]

RESOLUTION VBANDHAPS (WRC-07)

Additional coordination mechanism resulting from high altitude platform
stations (HAPS) in the fixed service in the bands 47.2-47.5 GHz and
47.9-48.2 GHz by and by other services

The World Radiocommunication Conference (Geneva, 2007),

considering

*a)* that the band 47.2-50.2 GHz is allocated to the fixed, mobile and
fixed-satellite services on a co-primary basis;

*b)* that WRC‑97 made provision for operation of HAPS, also known as
stratospheric repeaters, within the fixed service in the bands
47.2-47.5 GHz and 47.9-48.2 GHz;

*c)* that Recommendation ITU‑R F.1500 contains the characteristics of
systems in the fixed service using HAPS;

[]{.mark}

*d)* that Recommendation ITU-R SF.1481-1 contains information on
frequency sharing between systems in the fixed service using
high-altitude platform stations and satellite systems in the
geostationary orbit in the fixed-satellite service in the bands
47.2-47.5 GHz and 47.9-48.2 GHz.

*e)* that while the decision to deploy HAPS can be taken on a national
basis, such deployment may affect neighboring administrations,
particularly in small countries;

*f)* that ITU‑R has completed studies dealing with sharing between
systems using HAPS in the fixed service and other types of systems in
the fixed service in the bands 47.2-47.5 GHz and 47.9-48.2 GHz;

*recognizing*

*a)* that the procedures of Article **9** have been applied on a
provisional basis from the end of WRC-97 through the end of WRC-07 for
coordination between satellite systems and systems using HAPS in the
bands 47.2-47.5 GHz and 47.9-48.2 GHz;

*b)* that with the suppression of Resolution **122 (Rev.WRC-03)** as of
the end of WRC-07, there is a need to provide coordination provisions
between satellite systems and systems using HAPS in the bands
47.2-47.5 GHz and 47.9-48.2 GHz in cases not presently covered under the
procedures of Article **9**;

*c)* that Nos. **9.17** and **9.18** apply for the coordination of
terrestrial stations, including HAPS, with earth stations, and vice
versa;

d\) that the coordination scenario involving a transmitting station in
the fixed service which is part of a high altitude platform network as
defined by No. **1.66A,** and other administrations with frequency
assignments for existing or planned space stations in any frequency band
in which the high altitude platform station network is to operate, is
not presently addressed in Section **II** of Article **9**,

resolves

1 to encourage administrations to facilitate coordination between
systems in the fixed service using HAPS operating in the bands
47.2-47.5 GHz and 47.9-48.2 GHz and systems of the co‑primary satellite
services in the same bands;

2 that, before an administration notifies to the Bureau or brings into
use a frequency assignment in the bands 47.2-47.5 GHz and/or 47.9-48.2
GHz for a transmitting station in the fixed service which is part of a
high altitude platform network as defined by No. **1.66A,** it shall
request and effect coordination with other administrations with
frequency assignments for existing or planned space stations in any
frequency band in which the high altitude platform station network is to
operate;

3 that any administration requesting coordination pursuant to *resolves
2* above shall send its request to the Bureau, together with the
appropriate information listed in Appendix **4** to the Radio
Regulations;

4 that any administration having received a request for coordination
made under *resolves 2* above shall promptly examine the matter with
regard to interference which may be caused to its own assignments, using
relevant ITU-R Recommendations for guidance on interference calculation
methods and criteria;

5 that if, following its action under *resolves 4* above, the
administration with which coordination was sought under *resolves 2*
does not agree to the request for coordination, it shall, within four
months of the date of publication of the BR IFIC under No. **9.38**,
inform the requesting administration of its disagreement, and shall
provide information concerning its own assignments upon which that
disagreement is based, including suggestions as it is able to offer with
a view to satisfactory resolution of the matter, to the requesting
administration with a copy to the Bureau;

6 that an administration having received a request for coordination made
under *resolves 2* above, but having not responded in the manner
provided in *resolves 5* above, shall be regarded as unaffected;

7 that Nos. **9.53** through **9.55** and Nos. **9.58** and **9.59**
shall apply or be applied, as appropriate, to coordination activities
initiated pursuant to this resolution,

instructs the Director of the Radiocommunication Bureau

1 to treat complete coordination information provided to it under
*resolves 3* above in the manner in which No. **9.34** directs the
Bureau to treat complete information sent under No. **9.30** or No.
**9.32**;

2 to apply No. **9.40A** if the information provided to it under
*resolves 3* above is found to be incomplete.

**Reasons:** Incorporates into a new resolution the coordination
provisions in Article **9** that are not already applicable by operation
of regulation to HAPS stations in the fixed service in the 47.2-47.5 GHz
and 47.9-48.2 GHz bands.

**\_\_\_\_\_\_**