World Radiocommunication Conference (WRC-12)
Geneva, 23 January - 17 February 2012
Addendum 4 to
Document 5–E
2011
Original: English
PLENARY MEETING
EUROPEAN COMMON PROPOSALS FOR
THE WORK OF THE CONFERENCE
PART 4
Agenda item 1.4
1.4
to consider, based on the results of ITU-R studies, any further regulatory measures to
facilitate introduction of new aeronautical mobile (R) service (AM(R)S) systems in the bands 112117.975 MHz, 960-1 164 MHz and 5 000-5 030 MHz in accordance with Resolutions 413
(Rev.WRC-07), 417 (WRC-07) and 420 (WRC-07);
Introduction
This agenda item covers the following issues:
Resolution 413 (WRC-2007):
At WRC-03, an allocation in the band 108-117.975 MHz was made to the AM(R)S limited to systems
that transmit navigational and surveillance information in accordance with international aviation
standards.
At WRC-07, AM(R)S in the band 108-112 MHz was further limited to only ground based systems that
transmit navigational information in support of air navigation functions, while the band 112-117.975
MHz was opened to all AM(R)S systems subject to Resolution 413 (Rev.WRC-07). In addition, WRC12 Agenda item 1.4 was adopted to determine if “further regulatory measures” are necessary to
“facilitate introduction of new AM(R)S in the band(s) 112-117.975 MHz”.
Studies indicate that no harmful interference will arise from the introduction of AM(R)S systems in the
band 112-117.975 MHz into analogue FM broadcasting receivers below 108 MHz and that both
services can operate on a compatible basis. Hence no specific ITU material needs to be developed for
the protection of analogue FM broadcasting receivers below 108 MHz from AM(R)S emissions in the
band 112-117.975 MHz.
Regarding the compatibility with digital sound broadcasting service below 108 MHz, the matter will
be pursued under traditional ITU-R activities outside the WRC process.
Europe proposes to modify Resolution 413 (Rev.WRC-07) in such a way that “invites ITU-R” 1) an 3)
are suppressed.
Resolution 417 (WRC-2007):
At WRC-07 an AM(R)S allocation was made in the band 960-1 164 MHz limited to systems operating
in accordance with international aviation standards. In addition, Agenda item 1.4 and
Resolution 417 (WRC-07) were adopted to study operational and technical means to facilitate sharing
of AM(R)S systems with ARNS systems identified in considering f) and g) of Resolution 417 (WRC07) as well as with RNSS operating in the band 1 164-1 215 MHz.
The studies provide separation distances below which site-specific compatibility studies should be
performed in order to ensure that in particular non-ICAO standardized ARNS systems are protected.
In order not to cause harmful interference to the RNSS systems in the adjacent band 1 164-1 215 MHz,
studies concluded on equivalent isotropically radiated power limits to be imposed on any AM(R)S
station.
Europe proposes to modify Resolution 417 (WRC-07) to include the results of these studies and enable
the operation of AM(R)S.
Resolution 420 (WRC-2007):
At WRC-07 the frequency band 5 091-5 150 MHz was allocated to AM(R)S to cover the need of
surface applications at airports. But due to uncertainty in the spectrum requirement for these
applications, WRC-12 Agenda item 1.4 and Resolution 420 (WRC-07) were adopted to determine if
AM(R)S spectrum requirements could be satisfied in the already-allocated 5 091-5 150 MHz band and
in case this is not possible, to further investigate the feasibility of an allocation for AM(R)S in the
bands between 5 000 and 5 030 MHz.
Out of the total identified spectrum requirement, the need for safety critical AM(R)S spectrum will not
exceed 50 MHz and the additional identified spectrum requirement needs to be met by other means i.e.
in allocations to radio communication services other than AM(R)S. Hence, AM(R)S spectrum
requirements for surface applications at airports in the 5 GHz range can be fulfilled in the band 5 0915 150 MHz. Therefore, Europe does not support any new AM(R)S allocation to cover this particular
need.
Furthermore, there is currently little flexibility in the frequency band 5 091-5 150 MHz and the
previously identified need for aeronautical security system intended to operate in is this band is no
longer required. Europe is therefore of the view that the radio regulatory provisions related to the
aeronautical security system should be deleted.
Sub-Part 4A
Resolution 413 (Rev. WRC-07)
Use of the band 108-117.975 MHz by the aeronautical mobile (R) service
MOD
EUR/XXA4/1
RESOLUTION 413 (REV.WRC-12)
Use of the band 108-117.975 MHz by the aeronautical mobile (R) service
The World Radiocommunication Conference (Geneva, 2012),
considering
a)
the current allocation of the frequency band 108-117.975 MHz to the aeronautical
radionavigation service (ARNS);
b)
the current requirements of FM broadcasting systems operating in the frequency band 87108 MHz;
c)
that digital sound broadcasting systems are capable of operating in the frequency band at about
87-108 MHz as described in Recommendation ITU-R BS.1114;
d)
the need for the aeronautical community to provide additional services by enhancing navigation
systems through a radiocommunication data link;
e)
the need for the broadcasting community to provide digital terrestrial sound broadcasting
services;
f)
that this allocation was made by this Conference in the knowledge that studies are ongoing with
respect to the technical characteristics, sharing criteria and sharing capabilities;
g)
the need for the aeronautical community to provide additional services for radiocommunications, relating to safety and regularity of flight, in the band 112-117.975 MHz;
h)
that WRC-07 modified the allocation of the band 112-117.975 MHz to the aeronautical mobile
(R) services (AM(R)S) in order to make available this frequency band for new AM(R)S systems, and
in doing so enabled further technical developments, investments and deployment;
i)
that the frequency band 117.975-137 MHz currently allocated to the AM(R)S is reaching
saturation in certain areas of the world;
j)
that this new allocation is intended to support the introduction of applications and concepts in
air traffic management which are data intensive, and which could support data links that carry safetycritical aeronautical data;
k)
that additional information is needed about the new technologies which will be used, the
amount of spectrum required, the characteristics and sharing capabilities/conditions, and that therefore
studies are urgently required on which AM(R)S systems will be used, the amount of spectrum
required, the characteristics and the conditions for sharing with ARNS systems,
recognizing
a)
that precedence must be given to the ARNS operating in the frequency band 108117.975 MHz;
b)
that, in accordance with Annex 10 of the Convention of the International Civil Aviation
Organization (ICAO) on international civil aviation, all aeronautical systems must meet standards and
recommended practices (SARPs) requirements;
c)
that within ITU-R, compatibility criteria between FM broadcasting systems operating in the
frequency band 87-108 MHz and the ARNS operating in the frequency band 108-117.975 MHz
already exist, as indicated in the most recent version of Recommendation ITU-R SM.1009;
d)
that all compatibility issues between FM broadcasting systems and ICAO standard groundbased systems for the transmission of radionavigation-satellite differential correction signals have been
addressed,
noting
a)
that aeronautical systems are converging towards a radiocommunication data link environment
to support aeronautical navigation and surveillance functions, which need to be accommodated in
existing radio spectrum;
b)
that some administrations are planning to introduce digital sound broadcasting systems in the
frequency band at about 87-108 MHz;
c)
that no compatibility criteria currently exist between FM broadcasting systems operating in the
frequency band 87-108 MHz and the planned additional aeronautical systems in the adjacent band 108117.975 MHz using aircraft transmission;
d)
that no compatibility criteria currently exist between digital sound broadcasting systems
capable of operating in the frequency band at about 87-108 MHz and aeronautical services in the band
108-117.975 MHz,
resolves
1
that any aeronautical mobile (R) service systems operating in the band 108-117.975 MHz shall
not cause harmful interference to, nor claim protection from ARNS systems operating in accordance
with international aeronautical standards;
2
that any AM(R)S systems planned to operate in the frequency band 108-117.975 MHz shall, as
a minimum, meet the FM broadcasting immunity requirements contained in Annex 10 of the ICAO
Convention on International Civil Aviation for existing aeronautical radionavigation systems operating
in this frequency band;
3
that AM(R)S systems operating in the band 108-117.975 MHz shall place no additional
constraints on the broadcasting service or cause harmful interference to stations operating in the bands
allocated to the broadcasting service in the frequency band 87-108 MHz and No. 5.43 does not apply
to systems identified in recognizing d);
4
that frequencies below 112 MHz shall not be used for AM(R)S systems excluding the ICAO
systems identified in recognizing d);
5
that any AM(R)S operating in the frequency band 108-117.975 MHz shall meet SARPs
requirements published in Annex 10 of the ICAO Convention on International Civil Aviation;
invites ITU-R
to study any compatibility issues between the broadcasting and AM(R) services in the band 108117.975 MHz that may arise from the introduction of appropriate digital sound broadcasting systems,
described in Recommendation ITU-R BS.1114, and to develop new or revised ITU-R
Recommendations as appropriate;
instructs the Secretary-General
to bring this Resolution to the attention of ICAO.
Reasons:
Based on ICAO/ITU-R studies, Europe is of the opinion that no harmful interference will arise from
the introduction of AM(R)S systems in the band 112-117.975 MHz into FM broadcasting receivers
below 108 MHz. Resolution 413 should be amended to reflect the results of those studies.
Studies are still on-going concerning the interference from digital broadcasting sound systems into
AM(R)S. Europe is proposing that this matter will be further pursued under traditional ITU-R
activities outside the WRC process. Resolution 413 is amended to reflect this.
Sub-Part 4B
Resolution 417 (WRC-07)
Use of the band 960-1164 MHz by the aeronautical mobile (R) service
MOD EUR/XXA4/2
RESOLUTION 417 (Rev.WRC-12)
Use of the band 960-1 164 MHz by the aeronautical mobile (R) service
The World Radiocommunication Conference (Geneva, 2012),
considering
a)
that WRC-07 allocated the band 960 to 1 164 MHz to the aeronautical mobile (R) service
(AM(R)S) in order to make available this frequency band for new AM(R)S systems, and in doing so
enabled further technical developments, investments and deployment;
b)
the current allocation of the frequency band 960-1 164 MHz to the aeronautical
radionavigation service (ARNS);
c)
that new technologies are being developed to support communications and air navigation,
including airborne and ground surveillance applications;
d)
that the allocation of the frequency band 960-1 164 MHz to aeronautical mobile (R) service is
intended to support the introduction of applications and concepts in air traffic management which are
data intensive and which could support data links that carry safety critical aeronautical data;
e)
that in countries listed in No. 5.312 the frequency band 960-1 164 MHz is also used by
systems in the ARNS for which standards and recommended practices (SARPs) have not been
developed nor published by the International Civil Aviation Organization (ICAO);
f)
that, furthermore, the frequency band 960-1 164 MHz is also used by a non-ICAO system
operating in the ARNS that has characteristics similar to those of ICAO standard distance measuring
equipment;
)
recognizing
a)
that Annex 10 of the Convention of the ICAO contains SARPs for aeronautical
radionavigation and radiocommunication systems used by international civil aviation;
b)
that all compatibility issues between the ICAO Standard Universal Access Transceiver (UAT)
operating under AM(R)S allocations and other systems which operate in the same frequency range
have been addressed;
c)
that in the frequency band 1 024-1 164 MHz the sharing conditions are more complex than in
the band 960-1 024 MHz,
noting
a)
that compatibility criteria between AM(R)S systems proposed for operations in the frequency
band 960-1 164 MHz and ICAO - standardized aeronautical systems in the band will be developed in
ICAO;
b)
that compatibility criteria between AM(R)S systems operating in the frequency band 9601 164 MHz and RNSS receivers on the same aircraft will be developed in ICAO,
resolves
1
that any AM(R)S system operating in the frequency band 960-1 164 MHz shall meet SARPs
requirements published in Annex 10 of the ICAO Convention on International Civil Aviation;
2
that any operation of AM(R)S systems in the band 960-1 164 MHz with aircraft stations
operating within 934 km or/and ground stations operating within 465 km from the border of the
territory of [Russian Federation, Ukraine…], is subject to the coordination agreement to be obtained
from the concerned administrations of the countries listed above for the protection of aeronautical
radionavigation systems (see considering e) operating in the same band of these countries;
3
that administrations authorizing AM(R)S systems in the band 960-1164 MHz, shall ensure
compatibility with systems indicated under considering f whose characteristics are described in Annex
[XX] of Recommendation ITU-R M. [CHARLIE];
4
to invite ICAO to deal with compatibility between any AM(R)S systems in the band 9601 164 MHz and systems in considering f);
5
that administrations intending to implement AM(R)S in the band 960-1 164 MHz, in order not
to cause harmful interference to the radionavigation-satellite service in the band 1 164-1 215 MHz,
shall utilize the criteria set forth below:
−
any ground station operating under the AM(R)S allocation in the band 960-1 164 MHz,
shall limit its equivalent isotropically radiated power (e.i.r.p.) to the values presented in the
following table:
Emissions in the band 960-1 164 MHz
(Total e.i.r.p. in the band 960-1 164 MHz as
a function of the carrier central frequency)
AM(R)S centre frequency
1 146.45-1 164 MHz
Linearly decreasing from 34 to −62.9 dBW
−
Emissions in the band 1 164-1 215 MHz
1 164-1 197.6MHz
1 197.6-1 215 MHz
−90.8 dBW in any 1 MHz of
−90.8 dBW in any 1 MHz of
the band 1 164-1 197.6 MHz
the band 1 197.6-1 215 MHz
any aircraft station operating under the AM(R)S allocation in the band 960-1 164 MHz,
shall limit its equivalent isotropically radiated power (e.i.r.p.) to the values presented in the
following table:
Emissions in the band 960-1 164 MHz
(Total e.i.r.p. in the band 960-1 164 MHz as
a function of the carrier central frequency)
AM(R)S centre frequency
1 146.45-1 164 MHz
Linearly decreasing from 37.75 to −59.2 dBW
Emissions in the band 1 164-1 215 MHz
1 164-1 197.6 MHz
1 197.6-1 215MHz
−84 dBW in any 1 MHz of the
−92.4 dBW in any 1 MHz of
band 1 164-1 197.6 MHz
the band 1 197.6-1 215 MHz
instructs the Secretary-General
to bring this Resolution to the attention of ICAO.
Reasons: Europe is of the opinion that sharing the 960-1164 MHz frequency band between
networks in the aeronautical mobile (R) service and non-ICAO national systems in the aeronautical
radionavigation service would be feasible with frequency off-set and/or distance separation subject to
coordination of the AM(R)S networks with the non ICAO ARNS systems
With the current technologies, and with a sufficient frequency offset and/or distance separation,
Europe is of the opinion that the AM(R)S out-of-band emission can be mitigated to protect the RNSS
receiver operating in the 1164-1215 MHz.
Sub-Part 4C
Resolution 420 (WRC-07)
Consideration of the frequency bands between 5000 and 5030 MHz for
aeronautical mobile (R) service surface applications at airports
SUP
EUR/XXA4/3
RESOLUTION 420 (WRC-07)
Consideration of the frequency bands between 5 000 and 5 030 MHz for
aeronautical mobile (R) service surface applications at airports
MOD EUR/XXA4/4
5.444B The use of the band 5 091-5 150 MHz by the aeronautical mobile service is limited to:
–
–
SUP
systems operating in the aeronautical mobile (R) service and in accordance with
international aeronautical standards, limited to surface applications at airports. Such use
shall be in accordance with Resolution 748 (WRC-07);
aeronautical telemetry transmissions from aircraft stations (see No. 1.83) in accordance
with Resolution 418 (WRC-07).
EUR/XXA4/5
RESOLUTION 419 (WRC-07)
Considerations for use of the band 5 091-5 150 MHz by the aeronautical
mobile service for certain aeronautical applications
Reasons:
Based on the conducted studies within ITU-R, Europe is of the opinion that spectrum needed to fulfil
airport surface network requirements can be met in the current allocation. Therefore, Europe does not
support any new AM(R)S allocation to cover this particular need. Furthermore, Europe notes that there
is currently little flexibility in the frequency band 5 091-5 150 MHz and that the previously identified
need for aeronautical security system intended to operate in this band is no longer required. Europe is
therefore of the view that the radio regulatory provisions related to the aeronautical security system
should be deleted.