conversion of analogue assignments into digital allotments conversion of analogue assignments into...

Conversion of Analogue Assignments

into Digital Allotments

Conversion of Analogue Assignments

into Digital Allotments

The Channel Potential MethodThe Channel Potential Method

Dr. Roland Beutler GermanyDr. Roland Beutler Germany

Dr. Roland BeutlerFrequency Planning Department

September 2004

Basic Aspects of Frequency Planning forDigital Terrestrial Broadcasting

Basic Aspects of Frequency Planning forDigital 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. )


September 2004

Assignment- and Allotment-RequirementsAssignment- 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


September 2004

Coverage TargetsCoverage Targets

- Possible reception modes are fixed, portable (indoor/outdoor) andmobile

- Possible reception modes are fixed, portable (indoor/outdoor) andmobile

- DVB-T and T-DAB allow for several operation modes giving rise to different data capacities

robustness against negative transmission impactsruggedness against interfereing signals

- DVB-T and T-DAB allow for several operation modes giving rise to different data capacities

robustness against negative transmission impactsruggedness against interfereing signals

- DVB-T and T-DAB allow different transmitter network structuresto be employed ( SFN/MFN )

- DVB-T and T-DAB allow different transmitter network structuresto be employed ( SFN/MFN )

- Wide area coverage, regional or local coverage, urban coverage- Wide area coverage, regional or local coverage, urban coverage


September 2004

Fundamental Possibilities to GenerateInput Requirements to the RRC06


There are three basic strategies to generate input requirements

- free design of assignments or allotments




September 2004



free design of allotmentsfree design of allotments

- generation of allotment polygons according togiven political constraints



September 2004





- frequency assignment by synthesis algorithm




September 2004






- compatibility problems with existing analogueservices like analogue TV, network implementation blocked



- compatibility problems with existing analogueservices like analogue TV, network implementation blocked


September 2004







- transmitter-by-transmitter based conversion of existing entries in ST61 or GE89

( conversion rules similar to Chester 97 )




September 2004



transmitter-by-transmitter conversion of assignmentstransmitter-by-transmitter conversion of assignments

- digital requirements are derived by selecting set of transmitters and applying conversion rules

- frequency is kept fixed




September 2004



transmitter-by-transmitter conversion of assignmentstransmitter-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






September 2004











- conversion of analogue assignments into digital allotments( channel potential method )

- conversion of analogue assignments into digital allotments( channel potential method )

- 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


September 2004

The Channel Potential MethodThe Channel Potential Method

- Starting point: assignments of ST61 or GE89- 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)- Basis: protection criteria of typical DVB-T modes (RU~120km)


September 2004

The Channel Potential MethodStep 1: Selection of analogue stations

The Channel Potential MethodStep 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


September 2004

The Channel Potential MethodStep 2: Calculation of interference limited contours

The Channel Potential MethodStep 2: Calculation of interference limited contours

- calculation based on ITU-R. Rec. 1546- calculation based on ITU-R. Rec. 1546


September 2004

The Channel Potential MethodStep 3: Calculation of individual channel potential areas

The Channel Potential MethodStep 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


September 2004

The Channel Potential MethodStep 4: Assignment of channels onto allotment areas

The Channel Potential MethodStep 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


September 2004

The Channel Potential MethodStep 5: Combination of individual channel potential areas

The Channel Potential MethodStep 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


September 2004

The Channel Potential MethodStep 6: Flexible usage of channel potential areas (I)

The Channel Potential MethodStep 6: Flexible usage of channel potential areas (I)

- additional allotments can be added- additional allotments can be added


September 2004

The Channel Potential MethodStep 6: Flexible usage of channel potential areas (II)

The Channel Potential MethodStep 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


September 2004

Summary of Basic Features of theChannel Potential Method

Summary of Basic Features of theChannel Potential Method

• channel potential areas are mutually compatible• 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


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• target: submission of pre-coordinated requirements for the RRC06


September 2004

Current Planning StatusUHF-Layer 1



September 2004




September 2004

Current Planning StatusVHF-Layer

Current Planning StatusVHF-Layer


September 2004

Thank you very muchfor your attention !

Part 2 in the afternoon

Thank you very muchfor your attention !

Part 2 in the afternoon

conversion of analogue assignments into digital allotments conversion of analogue assignments into...

Documents

planning stage

planning process

frequency shape

planning approaches

rrc06 t

roland beutler germany

synthesis algorithm

size of service area