Regional Radiocommunication Seminar Lusaka 2003

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Regional Radiocommunication SeminarLusaka - 2003
COORDINATION , NOTIFICATION AND RECORDING OF
EARTH STATIONS. APPENDIX 7
Vadim Nozdrin vadim.nozdrin_at_itu.intRadiocommunic
ation BureauITU
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NEED FOR COORDINATION
Article 6 of the Constitution of the
Union Provides, among other things, that all
administrations are bound to abide by the
provisions of CS/CV/RR when the
radiocommunication stations operated by them are
capable of causing harmful interference to radio
services of other countries. Basic provisions of
Radio Regulations Articles 5, 7, 8, 9,11
Appendixes 4,5, and 8
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COORDINATION OF EARTH STATIONS
Article 5

• When ?
• Frequency bands allocated with equal rights to
  space and terrestrial services or space services
  in both directions
• The coordination area includes the territory of
  another country

All Regions ___________________ 6700 - 7075
MHz FIXED FIXED-SATELLITE (Earth-to-space)
(space-to-Earth) MOBILE
Region 1 ___________________ 5850 - 5925
MHz FIXED FIXED-SATELLITE (Earth-to-space)
MOBILE
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PROVISIONS FOR EFFECTING COORDINATION
Article 9 of the Radio Regulations

• 9.6
• Before an Administration notifies to BR or
  brings into use any frequency assignment of the
  cases listed below (9.7 - 9.21), it shall effect
  coordination, as required, with other
  administrations identified under 9.27.
• 9.17
• 9.17A
• 9.11A 9.15

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PROVISION 9.17
9.17 Coordination of any Specific earth station
or Typical Mobile Earth Station in respect of
Terrestrial Stations, in frequency bands above 1
GHz with the exception of the coordination under
9.15
Region 1 ___________________ 5850 - 5925
MHz FIXED FIXED-SATELLITE (Earth-to-space)
MOBILE
B
A
EARTH STATION
Coordination area
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PROVISION 9.17A
All Regions ___________________ 6700 - 7075
MHz FIXED FIXED-SATELLITE (Earth-to-space)
(space-to-Earth) MOBILE
9.17A Coordination of any specific earth station
in respect of other Earth Stations operating in
the opposite direction of transmission in
frequency bands allocated with equal rights to
space service in both directions of transmission
B
Rx EARTH STATION

EARTH STATION
A
Tx. EARTH STATION
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PROVISIONS 9.11A /9.15
Coordination of a Specific or Typical Earth
Station of non-GSO in respect of Terrestrial
Stations
5.389A The use of this frequency band by mobile
satellite service is subject to coordination
under S9.11A.
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COORDINATION AREA TECHNICAL CONCEPT
WITHIN THE COORDINATION AREA
Terrestrial Stations or Earth Stations operating
in opposite directions of transmission are likely
to receive interference from the earth station or
to cause interference to the earth station, above
the permissible level.

B

Receiving earth station
EARTH STATION
A
Coordination area
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COORDINATION AREA TECHNICAL CONCEPT
OUTSIDE THE COORDINATION AREA
The level of permissible interference will not be
exceeded Most unfavourable case assumptions
as regards interference
B
A
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COORDINATION AREA ADMINISTRATIVE CONCEPT
WITHIN THE COORDINATION AREA The earth station
has the right to operate with its coordinated
characteristics and at the level of agreed
interference
B
A
EARTH STATION
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Coordination data
Annex 2A to Appendix 4

• GEOGRAPHICAL DATA Location, Altitude
• SATELLITE Location, Identification (Geo,
  Non-Geo)
• ANTENNA Max. gain, Radiation pattern
• OTHER CHARACTERISTICS
• Power, Maximum Power Density, Frequencies,
• Noise temperature, Analog / Digital
• HORIZON ELEVATION ANGLE DIAGRAM

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ITU software for Determination of Coordination
Area
R1448 for methods specified in Appendix 7
(WRC-2000)
(ITU Digitized World Map (IDWM) is required)
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Methods for Determination of Coordination Area
Appendix 5 - Criteria

• Appendix 7 of RR
• Predetermined coordination distances 170, 300,
  500, 580, 1000 or 1080 Km

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TABLE 5-1 (continued)
 
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HORIZON ELEVATION ANGLE
.
Horizon Elevation Angle
Earth station
Building
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HORIZON ELEVATION ANGLE
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(No Transcript)
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Appendix 7 Methods for the Determination of the
Coordination Area

• MODE (1)
• Propagation of signals in troposphere via near
• great-circle paths
• 3 basic radio-climatic zones A, B, C
• 4 Basic radio-climatic zones A1, A2, B, C

• MODE (2)
• Propagation of signals by scattering due to
• hydrometeors
• 5 basic rain-climatic zones 1 to 5
• 15 basic rain-climatic zones A to N, P and Q

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Coordination contours shall be those which lead
to the greatest coordination distance Minimum
Coordination distance 100 km
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Methods for the Determination of the Coordination
Area

• Rule of Procedure In cases when coordination
  contour around an earth stations overlaps only a
  very small part of the territory of an
  administration and this overlapping is less than
  5 of the coordination distance, no coordination
  is required.

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Auxiliary Contour Appendix 7
B
Coordination contour
(55 dBW)
A
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Coordination area using method of Ap7
D
AUT
F
HNG
SUI
ROU
SVN
HRV
BIH
YUG
BUL
E
I
MKD
ALB
TUR
GRC
MLT
TUN
EGY
ALG
LBY
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Coordination Area of Mobile Earth Stations
For a mobile earth station, the periphery of the
service area is extended by the coordination
distance. The coordination distance may be a
predetermined coordination distance or it may be
calculated (No additional protection can be
assumed to be available from the earth station
horizon elevation angle for all azimuths)
.
.
.
.
.
.
.
.
.
.
Earth Station Service Area
.
.
.
.
.
.
.
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Coordination Area 9.11A/9.15
Ground-based Mobile Earth Station in respect of
Terrestrial Mobile(aircraft) in Band 1 - 3 GHz
Coordination Area
500 Km
500 Km
500 Km
Service Area Mobile Earth Station
500 Km
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COORDINATION REQUEST
COORDINATION DISTANCE CALCULATION
Coordination contours
Countries identified
APP 5
Coordination Request of Admn A (Ap4/III forms And
Coordination Contours)
To Countries identified (Administration B)
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Response to Request of Coordination by
Administration B

• Acknowledge receipt of the coordination request
• Collect data on existing and planned TS ES(
  ODT) to be brought into use in the next 3 years
  or to be operated prior to the date of bringing
  into use of earth station, falling within the
  coordination area.

B
A
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Response to Request of Coordination by
Administration B

• Conduct Technical Examination
• Detailed technical examination is not required
  if the TS ES(ODT)
• Are not inside the coordination area or
• Has no frequency overlap or
• With lesser potential are not inside the
  Auxiliary contours
• Interference is within the acceptable level

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Response to Request of Coordination by
Administration B
Conduct Detailed Technical Examination
Detailed technical examination is required if TS
ES(ODT) inside the coordination contour or
auxiliary contours could cause or receive
unacceptable interference. Exchange of
information like terrain profile, modulation
scheme, precise e.i.r.p and sensitivity may help
administrations to reach coordination agreement
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Response to Request of Coordination by
Administration B
Coordination agreement is reached (9.52B)
Administration B may agree to the coordination
by requesting the inclusion of its TS ES(ODT)
not yet recorded in the MIFR but are to be
brought into use in the next three years and
sends complete characteristics (Ap4 Annex 1A/1B
or 2A/2B) of these stations to Administration A
and the Bureau.
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Response to Request of Coordination by
Administration B

• Coordination agreement is not reached (9.52)
• Administration B does not agree to the
  coordination request. It shall
• within four months of the date of dispatch of the
  coordination data, inform Administration A of its
  disagreement
• provide information concerning its own
  assignments upon which that disagreement is
  based and
• make such suggestions as it is able to offer with
  a view to satisfactory resolution of the matter.
• A copy of that information shall be sent to the
  Bureau.
• Only that information relating to existing
  radiocommunication stations or to those to be
  brought into use within the next three months for
  terrestrial stations, or three years for earth
  stations, shall be treated as notifications under
  Nos. 11.2 or 11.9.

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No response to Request of Coordination

• Administration A actions
• request an acknowledgement after 30 days after
  date of the request (9.45)
• after 15 days after date of the second request
  may seek the assistance of the Bureau (9.46)
• the Bureau is to sent reminder requesting an
  immediate acknowledgement
• if there is no reply (9.47-9.49)
• no complaint will be made in respect pf harmful
  interference
• own assignments will not cause harmful
  interference.

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NOTIFICATION AND RECORDING OF EARTH STATIONS

• BR actions
• completeness and receivability checking
• publication in BR IFIC Part-I
• regulatory examination
• conformity with the Radio Regulations (11.31)
• technical examination
• - coordination agreement obtained
• all examination results are favourable-
  publication in BR IFIC Part-II and recording in
  Master register
• some examination results are unfavourable-
  publication in BR IFIC Part-III and returning of
  application back to notified Administration with
  reasons.

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NOTIFICATION AND RECORDING OF EARTH STATIONS

• Administration A actions
• Conditions
• coordination agreement,
• notification of satellite,
• Not early than 3 years before the planned date of
  operation.
• Notification request to the Bureau (CR/144,
  CR/165, 169)
• Ap4/III in accordance with AP5 (SpaceCap,
  electronic form only)
• Coordination area,
• Validation required (SNSVal).