BRTSD

1
BR Biennial Seminar 2006
BR/TSD
Conformity check in the GE06 Agreement
BCD
Biennial Seminar of the Radiocommunication
Bureau Seminar 30 October 3 November
2006 David Botha
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BR Biennial Seminar 2006
BR/TSD
BCD
Method for verifying the conformity with the
digital Plan entry

• Contained in Section 2 of Annex 4 to the GE06
  Agreement
• Applicable under provision 4.1.2.7 (one or more
  assignments derived from an allotment or an
  allotment with linked assignments)
• Additionally, also applicable under provision
  4.1.2.4 b) modification of a digital Plan entry
  without increasing its interference potential
• Notification of one or more assignments under
  Art. 5 for recording in the MIFR
• Rule of Procedure under preparation for
  submission concerning the treatment of analogue
  television assignments.

Nov 2006
3
BR Biennial Seminar 2006
BR/TSD
Examination of conformity with the digital Plan
entry
BCD
Step 1
Determine the location of the reference point

• The reference point is used for the construction
  of the cut-off field strength contour and the
  calculation points
• For a single digital BC assignment or a digital
  BC assignment linked to an allotment without an
  SFN-ID, the reference point is the location of
  the transmitter site
• For a modification as part of an SFN, the
  reference point is the centre of gravity of all
  the assignments in the SFN
• For an allotment or an allotment linked to
  assignments with an SFN-ID, the reference point
  is the centre of gravity of the allotment area(s).

Nov 2006
4
BR Biennial Seminar 2006
BR/TSD
Examination of conformity with the digital Plan
entry
BCD
Step 2
Construction of 1000 km contour for the
determination of the limits of the examination

• Circle with a radius of 1000 km centered on the
  location of site for single assignments, or
  digital BC assignments linked to an allotment
  without an SFN-ID
• Circles with radii of 1000 km centered on the
  locations of assignments forming part of an SFN,
  resulting in several contours surrounding the
  sites of the digital BC assignments of the SFN
• A 1000 km geometrical contour in accordance with
  Appendix 1 to Section II of Annex 4 to the GE06
  Agreement around the sub-areas of allotments or
  allotments linked to digital BC assignments with
  an SFN-ID.

Nov 2006
5
BR Biennial Seminar 2006
BR/TSD
Examination of conformity with the digital Plan
entry
BCD
Step 3
Calculation of the cut-off and interfering field
strengths

• Use the propagation prediction method in Appendix
  2.1
• For all cases calculate the field strength for
  50 of locations and 1 of time
• In the case of the need to aggregate field
  strengths, use the power summation method in 3.1
  of Section 2 of Annex 4 of the GE06 Agreement

Nov 2006
6
BR Biennial Seminar 2006
BR/TSD
Examination of conformity with the digital Plan
entry
BCD
Step 3 continued
Calculation of the cut-off and interfering field
strengths

• For the implementation of
• Single assignments or a single assignment linked
  to an allotment with no SFN-ID, calculate the
  field strength from the notified assignment
• An allotment, calculate the field strength as the
  power sum of the converted assignments recorded
  in the MIFR and the new notified assignment(s)

Nov 2006
7
BR Biennial Seminar 2006
BR/TSD
Examination of conformity with the digital Plan
entry
BCD
Step 3 continued
Calculation of the cut-off and interfering field
strengths

• For the implementation of
• An allotment with linked assignments, calculate
  the field strength as the power sum from the
  assignments recorded in the MIFR, assignments
  recorded in the MIFR under provisions 5.1.4,
  5.1.6 and 5.1.7, new notified assignment(s) and
  linked assignments submitted for recording in the
  MIFR
• Set of assignments with a common SFN-ID,
  calculate the field strength as the power
  summation of the assignments recorded in the MIFR
  and the new notified assignment(s).

Nov 2006
8
BR Biennial Seminar 2006
BR/TSD
Examination of conformity with the digital Plan
entry
BCD
Step 4
Construction of the cut-off field strength contour

• Determine the relevant cut-off field strength
  from the relevant minimum trigger field strengths
  in Section 1 of Annex 4 to the GE06 Agreement
• For 360 radials at 1 degree interval around the
  reference point, determine the intersection of
  the radials with the 1000 km contour from Step 2
• Calculate the interfering field strength from the
  assignment(s) at the intersection point

Nov 2006
9
BR Biennial Seminar 2006
BR/TSD
Examination of conformity with the digital Plan
entry
BCD
Step 4 continued
Construction of the cut-off field strength contour

• If the calculated field strength value is above
  the cut-off value then the intersection point is
  the cut-off point
• If the calculated value is below the cut-off
  value, then move along the radial towards the
  reference point until the cut-off value is
  reached, this is the location of the cut-off
  point
• Repeat the process for all radials

Nov 2006
10
BR Biennial Seminar 2006
BR/TSD
Examination of conformity with the digital Plan
entry
BCD
Step 4 continued
Construction of the cut-off field strength contour

• If the cut-off field strength contour relative to
  broadcasting does not enclose or intersect any
  borders of other administrations
• Determine whether any assignments to other
  primary terrestrial services with overlapping
  frequency bands with the notification exist
  inside the 1000 km contour
• If no such assignments exist, then the notified
  assignment is in conformity

Nov 2006
11
BR Biennial Seminar 2006
BR/TSD
Examination of conformity with the digital Plan
entry
BCD
Step 4 continued
Construction of the cut-off field strength contour

• If the cut-off field strength contour relative to
  broadcasting does not enclose or intersect any
  borders of other administrations
• If assignments to other primary terrestrial
  services exist within the 1000 km contour,
  reconstruct the cut-off field strength contour
  using the cut-off field strength value for the
  relevant other primary terrestrial service
• If the reconstructed cut-off field strength
  contour does not enclose or intersect other
  borders, then the notified assignment is in
  conformity

Nov 2006
12
BR Biennial Seminar 2006
BR/TSD
Examination of conformity with the digital Plan
entry
BCD
Step 5
Construction of the calculation points

• If the cut-off field strength contour encloses or
  intersects with borders of other administrations,
  construct a number of geometrical contours in the
  same manner as the 1000 km contour in Step 2, but
  at distances of 60, 100, 200, 300, 500, 750 and
  1000 km
• The calculation points are those geographical
  points that fall inside the cut-off field
  strength contour and outside the territory of the
  notifying administration and where the
  geometrical contours intersect with the 360
  radials.

Nov 2006
13
BR Biennial Seminar 2006
BR/TSD
Examination of conformity with the digital Plan
entry
BCD
Step 6
Calculation of the interference envelope of the
digital Plan entry at the calculation points

• For a Plan entries which comprise
• Single assignments or a single assignment linked
  to an allotment with no SFN-ID, calculate the
  field strength from the Plan assignment
• An allotment, calculate the highest field
  strength from the relevant reference network

Nov 2006
14
BR Biennial Seminar 2006
BR/TSD
Examination of conformity with the digital Plan
entry
BCD
Step 6 continued
Calculation of the interference envelope of the
digital Plan entry at the calculation points

• For a Plan entries which comprise
• An allotment with linked assignments, use the
  highest field strength of the power sum of the
  field strengths from the linked Plan assignments
  or the field strength from the relevant reference
  network
• Assignments with a common SFN-ID, calculate the
  power sum of the field strengths from all the
  Plan assignments.

Nov 2006
15
BR Biennial Seminar 2006
BR/TSD
Examination of conformity with the digital Plan
entry
BCD
Step 7
Examination of conformity

• Calculate the interfering field strengths at all
  the calculation points as described in Step 3
• If at all calculation points the interfering
  field strength of the Plan implementation does
  not exceed interference envelope of the digital
  Plan entry, then the notified assignment(s) is in
  conformity.

Nov 2006
16
BR Biennial Seminar 2006
BR/TSD
BCD
Nov 2006
17
BR Biennial Seminar 2006
BR/TSD
BCD
Thank you
Nov 2006