INTERNATIONAL TELECOMMUNICATION UNION
WRC-2000
Document 308-E
22 May 2000
Original: English
WORLD
RADIOCOMMUNICATION
CONFERENCE
ISTANBUL, 8 MAY – 2 JUNE 2000
WORKING GROUP 5D
Drafting Group 5D ad hoc
The ad hoc Drafting Group reviewed the proposals from administrations and produced the
following draft revision of footnote S5.488 and an associated draft resolution.
MOD
S5.488
1.7-12.2 GHz in the fixed-satellite service in Region 2 and The use of the band 11.712.2 GHz by geostationary-satellite networks in the fixed-satellite service in Region 2 is subject to
previous agreement between administrations concerned and those having services, operating or
planned to operate in accordance with the Table, which may be affected (see Articles S9 and
S11)the provisions of Resolution XYZ (WRC-2000). For the use of the band 12.2-12.7 GHz by the
broadcasting-satellite service in Region 2, see Appendix S30.
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ADD
RESOLUTION [COM5/18] (WRC-2000)
Protection of terrestrial services in all Regions from Region 2 GSO FSS
networks using the frequency band 11.7-12.2 GHz
The World Radiocommunication Conference (Istanbul, 2000),
considering
a)
that, in Regions 1 and 3, the band 11.7-12.2 GHz is allocated on a co-primary status to
terrestrial services and to the broadcasting-satellite service;
b)
that, in Region 2, the band 11.7-12.1 GHz is allocated on a co-primary status to
terrestrial services (except in the countries listed in S5.486) and to the fixed-satellite service;
c)
that, in Region 2, the band 12.1-12.2 GHz is allocated on a co-primary status to
terrestrial services in Peru (see S5.489) and to the fixed-satellite service;
d)
that the protection of the broadcasting-satellite service in Regions 1 and 3 from the
fixed-satellite service in Region 2 is assured by Article 7 and Annex 4 to Appendix S30;
e)
that the protection of the fixed-satellite service in Region 2 from the fixed-satellite
service in Region 2 is assured either by S9 (S9.7 or S9.12) or S22;
f)
that the protection of terrestrial services in Regions 1, 2 and 3 from non-geostationary
satellite systems in the fixed-satellite service in Region 2 is assured by S21;
g)
that there is a need to protect terrestrial services in Regions 1, 2 and 3 from
geostationary- satellite networks in the fixed-satellite service in Region 2;
h)
that WRC-2000 has modified No. S5.488 by revising the regulatory limitations on the
operation of the GSO FSS in Region 2 in the band 11.7-12.2 GHz,
recognizing
a)
that ITU-R has developed Recommendation ITU-R SF.674-1, dealing with sharing
between the fixed-satellite service in Region 2 and the fixed service in the band 11.7-12.2 GHz in
Region 2;
b)
that the power flux-density limits contained in Article S21 (Table S21-4) and applicable
to the fixed-satellite service in the band 10.7-11.7 GHz afford an adequate protection to terrestrial
services;
c)
that the limits referred in recognizing b) are 2 dB less stringent than the coordination
thresholds contained in Recommendation ITU-R SF.674-1,
resolves
before an administration notifies to the Bureau or brings into use, in Region 2, a frequency
assignment for a GSO FSS network in the 11.7-12.2 GHz band, it shall effect coordination with any
administration of Regions 1, 2, and 3 having a primary allocation to terrestrial services in the same
frequency band if the power flux-density produced on its territory exceeds the following thresholds:
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–124
dB(W/m2) in 1 MHz
for 0°   5
–124 + 0.5 (-5)
dB(W/m2) in 1 MHz
for 5°<   25°
–114
dB(W/m2) in 1 MHz
for
  25°
where  is the angle of arrival of the incident wave above the horizontal plane, in degrees.*
instructs the Radiocommunication Bureau
in its examination of requests for coordination or notification notices for any geostationary
fixed-satellite space station operating in the band 11.7-12.2 GHz in Region 2, to determine if the
power flux-density thresholds in the resolves are exceeded on the territory of any administration
other than the notifying administration and, if so, to so notify both the notifying and the affected
administrations.
____________
_______________
*
These values relate to the pfd and angles of arrival which would be obtained under free-space
propagation conditions.
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