Requirements and declarations Ken Hunt EBU Technical department.
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Transcript of Requirements and declarations Ken Hunt EBU Technical department.
Requirements and declarations
Ken Hunt EBU Technical department
Overview
➲ It is well known that in some parts of the planning area there are too many requirements to be satisfied
➲ It is also well known that administrative declarations can be used to overcome some deficiencies of the computing process:
● to account for the presence of mountains● to account for future use of directional
transmitting antennas● other effects...
Overview
➲ It may not be obvious that a combination of excess requirements and abusive (internal) declarations can have a disastrous impact on the planning process
➲ It is the declarations which are internal to any one administration which have the highest potential for abuse
➲ A separate presentation goes into the detail of this
➲ This presentation deals with some specific examples and some possible improvements
Example 1
➲ Some of the abuse of the concept of declarations seems to be accidental
➲ An example is where an administration submits several requirements for a given area, some with a single channel and others with 'UHF' (or 'VHF')
➲ The same administration then declares that most, or all, of the multi channel requirements are compatible
Example 1
➲ They could all then be assigned the same channel, possibly even for the same area
➲ While this would 'satisfy' many of the requirements, it would not lead to a situation which could be implemented
➲ It is unlikely to be what the administration intended but is a direct result of what it has said that it wants
Example 2
➲ Another example is where an administration has submitted several requirements for the same area with the same single channel
➲ These are clearly incompatible but the administration has declared them compatible
➲ It is likely that the synthesis process will find that it can assign the same channel to more than one requirement for the same area
➲ It is unlikely that this is what the administration wanted (but it is possible)
Example 3
➲ In some cases an administration has submitted many tens of requirements, sometimes over 100, for the same area
➲ Without declarations there are clearly too many to be satisfied
➲ With declarations many of the requirements may be 'satisfied' but most of them could never be implemented
Example 4
➲ In some other cases it is difficult to believe that a mistake has been made and it seems more likely that there has been a deliberate attempt to distort the planning process and gain an advantage over neighbouring countries
➲ For example there are sometimes several overlapping allotments/assignments on the same channel
➲ These are clearly incompatible but have been declared compatible
Example 4
➲ The synthesis process will count these requirements individually and may then give an advantage to the concerned administration
➲ It will be argued that there are always mountains between the requirements
Example 4
➲ The synthesis process will count these requirements individually and may then give an advantage to the concerned administration
➲ It will be argued that there are always mountains between the requirements
➲ In some parts of the planning area there seem to be more mountains than people!
Conditional declarations
➲ A new concept is that of conditional declarations and they may be too new for abuse of them to have been developed
Conditional declarations
➲ A new concept is that of conditional declarations and they may be too new for abuse of them to have been developed
➲ YET
Conditional declarations
➲ A new concept is that of conditional declarations and they may be too new for abuse of them to have been developed
➲ YET
➲ It is quite easy to foresee some abuse➲ This could be where the conditions are not
sufficiently precise and it subsequently is found to be impossible to meet them and a requirement can then not be implemented
Possible improvements
➲ Action by administrations:
➲ Every effort should be made to ensure that the conditions applied to 'conditional declarations' :
● are stated explicitly and without ambiguity● are not subject to subsequent increased
difficulty (such as increased protection ratios)
➲ Action within the planning approach :➲ None discussed
Excess requirements
➲ Action by administrations:
➲ Every effort should be made to reduce the number of requirements in any area where there is an excess
Excess requirements
➲ Action by administrations:
➲ Every effort should be made to reduce the number of requirements in any area where there is an excess
➲ Additional effort should be made to reduce the number of requirements in any area where there is an excess
➲ However, there are currently increases
Excess requirements
➲ Action within the planning approach:
➲ Difficult to see what could be done in the absence of any identification of what are the priorities of a given administration
➲ Can administrations apply moral pressure to their neighbours?
Declaration abuse
➲ Action by administrations:
➲ Apply moral pressure to neighbours
Declaration abuse
➲ Action by administrations:
➲ Apply moral pressure to neighbours
➲ Apply more moral pressure to neighbours!
Declaration abuse
➲ Action within the planning approach:
➲ An extension to the compatibility analysis and synthesis could be considered in order to reduce the imbalance that they currently introduce
➲ This could involve splitting the synthesis into two phases
➲
Declaration abuse
➲ In the first phase internal declarations would be either:
● ignored completely, or● used to produce 'super linked' sets of
requirements which would be treated as single requirements by the synthesis
➲ In the second phase any requirements which were assigned a channel in the first phase would retain a channel and all declarations (internal and external) would be taken into account
Declaration abuse
➲ The overall impact would be to achieve a better balance between administrations which had made abusive declarations and those which had not
➲ In those parts of the planning area where there had been no abusive declarations there should be little or no effect