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Conversion of Analogue Assignments into Digital Allotments Conversion of Analogue Assignments into Digital Allotments The Channel Potential Method Dr.

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Presentation on theme: "Conversion of Analogue Assignments into Digital Allotments Conversion of Analogue Assignments into Digital Allotments The Channel Potential Method Dr."— Presentation transcript:

1 Conversion of Analogue Assignments into Digital Allotments Conversion of Analogue Assignments into Digital Allotments The Channel Potential Method Dr. Roland Beutler Germany

2 Dr. Roland Beutler Frequency Planning Department September 2004 Basic Aspects of Frequency Planning for Digital Terrestrial Broadcasting Basic Aspects of Frequency Planning for Digital Terrestrial Broadcasting Frequency plan generation is based on - set of input requirements submitted by national administrations ( political constraints, national legislation, etc. ) Frequency plan generation is based on - set of input requirements submitted by national administrations ( political constraints, national legislation, etc. ) - adopted planning approaches and methods ( lattice/non-lattice, assignments/allotments, etc. ) - adopted planning approaches and methods ( lattice/non-lattice, assignments/allotments, etc. ) - adopted set of technical parameters ( minimum field strengths, protection ratios, etc. ) - adopted set of technical parameters ( minimum field strengths, protection ratios, etc. ) - adopted wave propagation model(s) ( land/cold sea/warm sea, superrefractivity, etc. ) - adopted wave propagation model(s) ( land/cold sea/warm sea, superrefractivity, etc. )

3 Dr. Roland Beutler Frequency Planning Department September 2004 Assignment- and Allotment-Requirements Assignment-Requirements transmitter oriented Assignment-Requirements transmitter oriented Allotment-Requirements service area oriented Allotment-Requirements service area oriented - given a planning stage: technical characteristics ( location, erp, antenna,... ) - given a planning stage: technical characteristics ( location, erp, antenna,... ) - after planning process assigned frequency shape and size of service area - after planning process assigned frequency shape and size of service area - given a planning stage: service area interference potential - given a planning stage: service area interference potential - after planning process assigned frequency network implementation - after planning process assigned frequency network implementation

4 Dr. Roland Beutler Frequency Planning Department September 2004 Coverage Targets - Possible reception modes are fixed, portable (indoor/outdoor) and mobile - Possible reception modes are fixed, portable (indoor/outdoor) and mobile - DVB-T and T-DAB allow for several operation modes giving rise to different data capacities robustness against negative transmission impacts ruggedness against interfereing signals - DVB-T and T-DAB allow for several operation modes giving rise to different data capacities robustness against negative transmission impacts ruggedness against interfereing signals - DVB-T and T-DAB allow different transmitter network structures to be employed ( SFN/MFN ) - DVB-T and T-DAB allow different transmitter network structures to be employed ( SFN/MFN ) - Wide area coverage, regional or local coverage, urban coverage

5 Dr. Roland Beutler Frequency Planning Department September 2004 Fundamental Possibilities to Generate Input Requirements to the RRC06 Fundamental Possibilities to Generate Input Requirements to the RRC06 There are three basic strategies to generate input requirements - free design of assignments or allotments There are three basic strategies to generate input requirements - free design of assignments or allotments

6 Dr. Roland Beutler Frequency Planning Department September 2004 Fundamental Possibilities to Generate Input Requirements to the RRC06 Fundamental Possibilities to Generate Input Requirements to the RRC06 free design of allotments - generation of allotment polygons according to given political constraints - generation of allotment polygons according to given political constraints

7 Dr. Roland Beutler Frequency Planning Department September 2004 Fundamental Possibilities to Generate Input Requirements to the RRC06 Fundamental Possibilities to Generate Input Requirements to the RRC06 free design of allotments - generation of allotment polygons according to given political constraints - frequency assignment by synthesis algorithm - generation of allotment polygons according to given political constraints - frequency assignment by synthesis algorithm

8 Dr. Roland Beutler Frequency Planning Department September 2004 Fundamental Possibilities to Generate Input Requirements to the RRC06 Fundamental Possibilities to Generate Input Requirements to the RRC06 free design of allotments - generation of allotment polygons according to given political constraints - frequency assignment by synthesis algorithm - compatibility problems with existing analogue services like analogue TV, network implementation blocked - generation of allotment polygons according to given political constraints - frequency assignment by synthesis algorithm - compatibility problems with existing analogue services like analogue TV, network implementation blocked

9 Dr. Roland Beutler Frequency Planning Department September 2004 Fundamental Possibilities to Generate Input Requirements to the RRC06 Fundamental Possibilities to Generate Input Requirements to the RRC06 There are three basic strategies to generate input requirements - free design of assignments or allotments There are three basic strategies to generate input requirements - free design of assignments or allotments - transmitter-by-transmitter based conversion of existing entries in ST61 or GE89 ( conversion rules similar to Chester 97 ) - transmitter-by-transmitter based conversion of existing entries in ST61 or GE89 ( conversion rules similar to Chester 97 )

10 Dr. Roland Beutler Frequency Planning Department September 2004 Fundamental Possibilities to Generate Input Requirements to the RRC06 Fundamental Possibilities to Generate Input Requirements to the RRC06 transmitter-by-transmitter conversion of assignments - digital requirements are derived by selecting set of transmitters and applying conversion rules - frequency is kept fixed - digital requirements are derived by selecting set of transmitters and applying conversion rules - frequency is kept fixed

11 Dr. Roland Beutler Frequency Planning Department September 2004 Fundamental Possibilities to Generate Input Requirements to the RRC06 Fundamental Possibilities to Generate Input Requirements to the RRC06 transmitter-by-transmitter conversion of assignments - compatibility between analogue and digital assignments - compatibility between analogue and digital assignments - fixed analogue areas ~ portable outdoor areas less efficient usage of spectrum - fixed analogue areas ~ portable outdoor areas less efficient usage of spectrum - digital requirements are derived by selecting set of transmitters and applying conversion rules - frequency is kept fixed - digital requirements are derived by selecting set of transmitters and applying conversion rules - frequency is kept fixed

12 Dr. Roland Beutler Frequency Planning Department September 2004 Fundamental Possibilities to Generate Input Requirements to the RRC06 Fundamental Possibilities to Generate Input Requirements to the RRC06 There are three basic strategies to generate input requirements - free design of assignments or allotments There are three basic strategies to generate input requirements - free design of assignments or allotments - transmitter-by-transmitter based conversion of existing entries in ST61 or GE89 ( conversion rules similar to Chester 97 ) - transmitter-by-transmitter based conversion of existing entries in ST61 or GE89 ( conversion rules similar to Chester 97 ) - conversion of analogue assignments into digital allotments ( channel potential method ) - conversion of analogue assignments into digital allotments ( channel potential method )

13 - Target: generation of an allotment plan (wide area cov.) such that i) spectrum is efficiently used ii) network implementation is facilitated, i.e. network infrastructure can be re-used iii) a high degree of mutual independence between adjacent countries is achieved iv) as much compatibility as possible between analogue and digital services is assured - Target: generation of an allotment plan (wide area cov.) such that i) spectrum is efficiently used ii) network implementation is facilitated, i.e. network infrastructure can be re-used iii) a high degree of mutual independence between adjacent countries is achieved iv) as much compatibility as possible between analogue and digital services is assured Dr. Roland Beutler Frequency Planning Department September 2004 The Channel Potential Method - Starting point:assignments of ST61 or GE89 - Method: i) geometrical construction of areas of potential channel usage ii) extend these areas to the maximum iii) simultaneous processing of all channels - Method: i) geometrical construction of areas of potential channel usage ii) extend these areas to the maximum iii) simultaneous processing of all channels - Basis:protection criteria of typical DVB-T modes (RU~120km)

14 Dr. Roland Beutler Frequency Planning Department September 2004 The Channel Potential Method Step 1: Selection of analogue stations The Channel Potential Method Step 1: Selection of analogue stations - selection criterion: erp > X kW - selection amended by choosing additional distinct transmitters - selection criterion: erp > X kW - selection amended by choosing additional distinct transmitters

15 Dr. Roland Beutler Frequency Planning Department September 2004 The Channel Potential Method Step 2: Calculation of interference limited contours The Channel Potential Method Step 2: Calculation of interference limited contours - calculation based on ITU-R. Rec calculation based on ITU-R. Rec. 1546

16 Dr. Roland Beutler Frequency Planning Department September 2004 The Channel Potential Method Step 3: Calculation of individual channel potential areas The Channel Potential Method Step 3: Calculation of individual channel potential areas - geometrical construction of channel potential areas taking into account: re-use distance land / sea propagation topographic schielding - geometrical construction of channel potential areas taking into account: re-use distance land / sea propagation topographic schielding - channel potential areas correspond to areas where channel can be used without further coordination - channel potential areas correspond to areas where channel can be used without further coordination

17 Dr. Roland Beutler Frequency Planning Department September 2004 The Channel Potential Method Step 4: Assignment of channels onto allotment areas The Channel Potential Method Step 4: Assignment of channels onto allotment areas - channel potential areas correspond to raw material for channel assignment - coordination with neighbors may be necessary - channel potential areas correspond to raw material for channel assignment - coordination with neighbors may be necessary

18 Dr. Roland Beutler Frequency Planning Department September 2004 The Channel Potential Method Step 5: Combination of individual channel potential areas The Channel Potential Method Step 5: Combination of individual channel potential areas - individual channel potential areas can be combined on a national basis - channel can be used throuhgout entire area without further coordination - individual channel potential areas can be combined on a national basis - channel can be used throuhgout entire area without further coordination

19 Dr. Roland Beutler Frequency Planning Department September 2004 The Channel Potential Method Step 6: Flexible usage of channel potential areas (I) The Channel Potential Method Step 6: Flexible usage of channel potential areas (I) - additional allotments can be added - additional allotments can be added

20 Dr. Roland Beutler Frequency Planning Department September 2004 The Channel Potential Method Step 6: Flexible usage of channel potential areas (II) The Channel Potential Method Step 6: Flexible usage of channel potential areas (II) - totally new allotments can be designed on the basis of the channel potential areas - totally new allotments can be designed on the basis of the channel potential areas

21 Dr. Roland Beutler Frequency Planning Department September 2004 Summary of Basic Features of the Channel Potential Method Summary of Basic Features of the Channel Potential Method channel potential areas are mutually compatible existing analogue assignments and new digital allotments are mutually compatible transition facilitated transition in adjacent countries decoupled existing analogue assignments and new digital allotments are mutually compatible transition facilitated transition in adjacent countries decoupled high flexibility when designing the channel potential areas and the subsequent mapping of frequencies onto allotment areas high flexibility when designing the channel potential areas and the subsequent mapping of frequencies onto allotment areas channel potential method can be used to - identify areas where frequencies could be used - assist the preparation of input requirements - coordinate the usage of frequencies between countries channel potential method can be used to - identify areas where frequencies could be used - assist the preparation of input requirements - coordinate the usage of frequencies between countries

22 Dr. Roland Beutler Frequency Planning Department September 2004 Coordination Activities based on the Channel Potential Method Coordination Activities based on the Channel Potential Method since approx. two years multilateral coordination meetings in Europe participants : Sweden, Poland, Czech Republic, Austria, Switzerland France, Belgium, Luxemburg, Netherlands and Germany since approx. two years multilateral coordination meetings in Europe participants : Sweden, Poland, Czech Republic, Austria, Switzerland France, Belgium, Luxemburg, Netherlands and Germany preparation of an all digital allotment plan for DVB-T and T-DAB on the basis of the channel potential method preparation of an all digital allotment plan for DVB-T and T-DAB on the basis of the channel potential method currently six wide-area national DVB-T coverages in UHF, further regional or local coverages, one DVB-T coverage in VHF and up to three coverages for T-DAB in VHF currently six wide-area national DVB-T coverages in UHF, further regional or local coverages, one DVB-T coverage in VHF and up to three coverages for T-DAB in VHF target: submission of pre-coordinated requirements for the RRC06

23 Dr. Roland Beutler Frequency Planning Department September 2004 Current Planning Status UHF-Layer 1 Current Planning Status UHF-Layer 1

24 Dr. Roland Beutler Frequency Planning Department September 2004 Current Planning Status UHF-Layer 2 Current Planning Status UHF-Layer 2

25 Dr. Roland Beutler Frequency Planning Department September 2004 Current Planning Status UHF-Layer 3 Current Planning Status UHF-Layer 3

26 Dr. Roland Beutler Frequency Planning Department September 2004 Current Planning Status UHF-Layer 4 Current Planning Status UHF-Layer 4

27 Dr. Roland Beutler Frequency Planning Department September 2004 Current Planning Status UHF-Layer 5 Current Planning Status UHF-Layer 5

28 Dr. Roland Beutler Frequency Planning Department September 2004 Current Planning Status UHF-Layer 6 Current Planning Status UHF-Layer 6

29 Dr. Roland Beutler Frequency Planning Department September 2004 Current Planning Status VHF-Layer Current Planning Status VHF-Layer

30 Dr. Roland Beutler Frequency Planning Department September 2004 Thank you very much for your attention ! Part 2 in the afternoon Thank you very much for your attention ! Part 2 in the afternoon


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