BR/TSD دمشق 2005 BCD Planning Software 16 - 18 أغسطس - آب 2005 دمشق David Botha Workshop for the Arab Group of Countries.

BR/TSD

2005دمشق

BCD Planning Software

آب - 18 - 16 2005أغسطس

دمشق

David Botha

Workshop for the Arab Group of Countries

BR/TSD

2005دمشق

BCD

Procedure for the production of a planCompatibility analysis and synthesis process

Analysis

Synthesis

Admin/BR

Admin/BR

BR/PXT

BR/PXT

Admin/BR/PXTAdmin/BR

Admin/BR/PXT

Admin.


BR/TSD

2005دمشق

BCDCurrent status

Delivery of software

The EBU delivered:

1. Software for the:• Prediction of the service area of analogue television

assignments• Compatibility assessment of digital sound broadcasting

assignments and allotments• Compatibility assessment of digital television

broadcasting assignments and allotments• Compatibility assessment:

• Mutually between requirements• Against existing and planned analogue television

broadcasting assignments• Against existing and planned assignments to other

primary services • Coded in FORTRAN


BR/TSD

2005دمشق

BCDCurrent status

Delivery of software continued

The EBU delivered:

2. Plan synthesis software for:• Digital sound and television broadcasting requirements

in band III• Digital television broadcasting in band IV/V• Code in FORTRAN

3. Total package:• 74 source files resulting in 42 individual programs• 28 reference data files


BR/TSD

2005دمشق

BCDCurrent status

Verification and testing

BR assisted by PXT to specify and perform tests on:

1. Basic software functionality:• Compile source code• Execute routines based on general data examples• Reporting errors and implement updates

2. Calculation verification:• Verification of basic propagation functionality• Compatibility assessment for simple cases• Synthesis results based on artificial problems


BR/TSD

2005دمشق

BCDCurrent status

Verification and testing continued

BR assisted by PXT specify and perform tests on:

3. Planning test scenarios:• Software performance vs. system requirements• Results from analyses and syntheses• Variation of scenario parameters

4. Planning exercise scenarios:• Results from analyses and syntheses• Implementing different approaches to planning• Findings as input to IPG meeting

5. Report on testing and verification submitted to the first IPG meeting


BR/TSD

2005دمشق

BCDCurrent status

Planning software: How does it work?

Input data:Reference situations

New digital BC requirements

Data conversion

Analogue TV assignment

services areas

Compatibility identificationCombination of analyses

Syntheses

VH

F a

nd U

HF

tre

ated

in p

aral

lel

and

inde

pend

ently


BR/TSD

2005دمشق

BCDCurrent status

Planning software: How does it work? (continued)

Analyses

Data preprocessing

Syntheses:Different algorithms

Combination of resultsIdentification of “best” solutionV

HF

and

UH

F t

reat

ed in

par

alle

lan

d in

depe

nden

tly

Plan


BR/TSD

2005دمشق

BCDAnalysis

Detailed overview

General steps:

1. Data preparation of:• Extracts of reference situations for broadcasting and

other primary services into text;• Requirements for digital broadcasting (assignments,

allotments for T-DAB and DVB-T) into text;• Conversion of text files into proprietary binary files.


BR/TSD

2005دمشق

BCDAnalysis

Detailed overview continued

General steps continued:

2. Calculation of:• Service areas of analogue TV assignments• Service areas of digital broadcasting assignments

(equivalent service areas based on noise limited reduced by 3 dB);

• Incompatibilities identified pair-wise between digital broadcasting requirements mutually – cannot share the same channel;

• Incompatibilities identified pair-wise between digital requirements and existing and planned assignments - the relevant acceptable channels become not available;

• Incompatible when the protection margin on any test point and for any channel is less than –0.5 dB


BR/TSD

2005دمشق

BCDAnalysis



3. Post processing of results:• Combining of incompatibility results of different cases;

• Analogue TV assignment Digital requirement• Digital requirement Analogue TV assignment• Digital requirement Digital requirement• Digital requirement Other primary service• Other primary service Digital requirement

• Consideration of administrative declarations• Preparation of files for bands III and IV/V separately.


BR/TSD

2005دمشق

BCDBasis of the analysis

Input data

• Conversion of analogue assignments from the “reference” situation or new requirements;

• Existing and planned analogue TV assignments taken into account;

• Existing and planned assignments to other primary services taken into account.


BR/TSD

2005دمشق

BCDBasis of the analysis

Technical considerations

• Analogue assignment service areas calculation, multiple interference based on power sum method;

• Conversions indicated and taken into account;• Calculation of estimated service areas based on

noise limited coverage areas reduced by a margin by 3 dB;

• No receiving antenna directivity or polarisation discrimination for mobile and portable indoor reception;

• For fixed reception receiving antenna directivity and polarisation were taken into account.


BR/TSD

2005دمشق

BCDResults of the analysis

Coverage presentation

• Coverage presented relative to the IDWM national borders (both analogue TV assignments and digital broadcasting requirements);

• Selection of results possible;• Results can be displayed without having to repeat

the calculation.


BR/TSD

2005دمشق

BCDResults of the analysis

Detail incompatibility information

• Conference mode:• Indicate limited worst case incompatibility;• All incompatibilities are listed;• Different incompatibility cases are provided in

separate output files.

• Named mode:• Change the configuration file to enable this

mode;• Detail incompatibility information provided for a

specific site / requirement;• Information specifically useful for coordination.


BR/TSD

2005دمشق

BCDSynthesis

Detailed overview

General steps:

1. Preprocessing of incompatibility results:• Conversion of digital to digital requirement incompatibility

results into required file format;• Generation of lists of available channels as opposed to

acceptable channels;• Data prepared for each requirement;• Separate sets for bands III and IV/V.


BR/TSD

2005دمشق

BCDSynthesis



2. Synthesizing frequency plans:• Search for solutions based on input data

and 49 channels in band IV/V and 67 combinations of channels overlapping in band III;

• Apply 162 individual ‘fast’ algorithms in band III and 230 algorithms in band IV/V;

• Software can treat 150 000 requirements in band IV/V and 32 000 in band III;

• Requires 2 GB of random access memory.


BR/TSD

2005دمشق

BCD

Synthesis


BR/TSD

2005دمشق

BCDSynthesis



3. Preparation of output data:• Generate combined list of all solutions

found for each algorithm;• Identify the ‘best’ solution as separate

output.


BR/TSD

2005دمشق

BCDSynthesis

Assigning frequency resources using a structured procedure

• Using algorithms as methods to assign channels / frequency blocks;

• Requirements are anonymous;• Available channels are taken into account;• Incompatibilities amongst digital broadcasting

requirements indicate that requirements cannot share the same channel / frequency block.


BR/TSD

2005دمشق

BCDSynthesis


In the absence of a full conference-like database, the synthesis results of a limited

situation are not conclusive!!!!!!

BR/TSD

2005دمشق

BCDSynthesis

Synthesis the colourful way

• Plan to all have one requirement• Acceptable choices = Acceptable channels / frequency

blocks


GreenBluePink

Yellow

BR/TSD

2005دمشق

BCDSynthesis


Same colour as neighbour = Incompatibility


Existing services = Pre-selected colour

BR/TSD

2005دمشق

BCDSynthesis


Frequency assignment = Colour selection


BR/TSD

2005دمشق

BCDFurther development

Items to be considered for improvement/correction

General further development:

• Continued verification and testing;• Report errors to EBU;• Implement corrections and repeat testing;• Suggest improvements;• PXT and IPG request changes;• Implement and test improvements and

changes.


BR/TSD

2005دمشق

BCDFurther development

Items to be considered for improvement/correction

Specific further development:

• Implement IPG-1 request for equitable access in the synthesis;

• Implement additional planning options and variants;

• Improvement in calculation speed;• Additional synthesis routines that improve

planning efficiency (longer calculation time)• Implementation of the final analysis.


BR/TSD

2005دمشق

BCD


BR/TSD

2005دمشق

BCD

جزيال شك را Thank you


BR/TSD دمشق 2005 BCD Planning Software 16 - 18 أغسطس - آب 2005 دمشق David Botha Workshop for the Arab Group of Countries.

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