The Channel Potential Method Dr. Roland Beutler Germany Practical Considerations

Dr. Roland Beutler Frequency Planning Department September 2004 What do we want to achieve ? generation of a pre-coordinated allotment plan in order to i) efficiently use the spectrum ii) facilitate the network implementation, i.e. re-use the network infrastructure ii) facilitate the network implementation, i.e. re-use the network infrastructure iii) achieve a high degree of mutual independence between adjacent countries iii) achieve a high degree of mutual independence between adjacent countries iv) assure as much compatibility as possible between analogue and digital services iv) assure as much compatibility as possible between analogue and digital services

Dr. Roland Beutler Frequency Planning Department September 2004 The Fundamental Assumptions of the Channel Potential Method The Fundamental Assumptions of the Channel Potential Method i) wave propagation is modelled in terms of ITU-R Rec.1546 ii) interference potential of allotments is based on reference networks ii) interference potential of allotments is based on reference networks iii) compatibility analysis between allotments can be carried out by applying the concept of re-use distances iii) compatibility analysis between allotments can be carried out by applying the concept of re-use distances iv) mixed paths can be accounted for in terms of effective distances iv) mixed paths can be accounted for in terms of effective distances v) topographical shielding can be accounted for manually

Dr. Roland Beutler Frequency Planning Department September 2004 The Basic Steps of the Channel Potential Method The Basic Steps of the Channel Potential Method Given:a set of politically determined allotment areas

Dr. Roland Beutler Frequency Planning Department September 2004 The Basic Steps of the Channel Potential Method Planning Area The Basic Steps of the Channel Potential Method Planning Area To be taken into account: - international boundaries - topography - wave propagation To be taken into account: - international boundaries - topography - wave propagation

Dr. Roland Beutler Frequency Planning Department September 2004 The Basic Steps of the Channel Potential Method Definition of Allotment Areas The Basic Steps of the Channel Potential Method Definition of Allotment Areas - allotment shapes determined by political conditions - allotment shapes determined by political conditions

Dr. Roland Beutler Frequency Planning Department September 2004 The Basic Steps of the Channel Potential Method The Basic Steps of the Channel Potential Method Given:a set of politically determined allotment areas Starting Point:ST61 or GE89 assignments to be converted into allotments

Dr. Roland Beutler Frequency Planning Department September 2004 The Basic Steps of the Channel Potential Method The Basic Steps of the Channel Potential Method Given:a set of politically determined allotment areas Starting Point:ST61 or GE89 assignments to be converted into allotments Step 1:Interference limited contours for chosen channel

Dr. Roland Beutler Frequency Planning Department September 2004 The Basic Steps of the Channel Potential Method Interference Contours The Basic Steps of the Channel Potential Method Interference Contours - choose particular VHF or UHF channel (here: ch. 22) - properly choose a set of stations according to e.r.p. (i.e. e.r.p > x kW) - calculate interference limited coverage contours - choose particular VHF or UHF channel (here: ch. 22) - properly choose a set of stations according to e.r.p. (i.e. e.r.p > x kW) - calculate interference limited coverage contours

Dr. Roland Beutler Frequency Planning Department September 2004 The Basic Steps of the Channel Potential Method The Basic Steps of the Channel Potential Method Given:a set of politically determined allotment areas Starting Point:ST61 or GE89 assignments to be converted to allotments Step 1:Interference limited contours for chosen channel Step 2:Calculation of channel potential areas for each station

Dr. Roland Beutler Frequency Planning Department September 2004 The Basic Steps of the Channel Potential Method Construction of Channel Potential Areas The Basic Steps of the Channel Potential Method Construction of Channel Potential Areas

Dr. Roland Beutler Frequency Planning Department September 2004 The Basic Steps of the Channel Potential Method Construction of Channel Potential Areas The Basic Steps of the Channel Potential Method Construction of Channel Potential Areas

Dr. Roland Beutler Frequency Planning Department September 2004 The Basic Steps of the Channel Potential Method Construction of Channel Potential Areas The Basic Steps of the Channel Potential Method Construction of Channel Potential Areas

Dr. Roland Beutler Frequency Planning Department September 2004 The Basic Steps of the Channel Potential Method Construction of Channel Potential Areas The Basic Steps of the Channel Potential Method Construction of Channel Potential Areas

Dr. Roland Beutler Frequency Planning Department September 2004 The Basic Steps of the Channel Potential Method Construction of Channel Potential Areas The Basic Steps of the Channel Potential Method Construction of Channel Potential Areas

Dr. Roland Beutler Frequency Planning Department September 2004 The Basic Steps of the Channel Potential Method Construction of Channel Potential Areas The Basic Steps of the Channel Potential Method Construction of Channel Potential Areas

Dr. Roland Beutler Frequency Planning Department September 2004 The Basic Steps of the Channel Potential Method Construction of Channel Potential Areas The Basic Steps of the Channel Potential Method Construction of Channel Potential Areas

Dr. Roland Beutler Frequency Planning Department September 2004 The Basic Steps of the Channel Potential Method The Basic Steps of the Channel Potential Method Given:a set of politically determined allotment areas Starting Point:ST61 or GE89 assignments to be converted to allotments Step 1:Interference limited contours for chosen channel Step 2:Calculation of channel potential areas for each station Step 3:Unification of channel potential areas

Dr. Roland Beutler Frequency Planning Department September 2004 The Basic Steps of the Channel Potential Method Unification of Channel Potential Areas The Basic Steps of the Channel Potential Method Unification of Channel Potential Areas

Dr. Roland Beutler Frequency Planning Department September 2004 The Basic Steps of the Channel Potential Method The Basic Steps of the Channel Potential Method Given:a set of politically determined allotment areas Starting Point:ST61 or GE89 assignments to be converted to allotments Step 1:Interference limited contours for chosen channel Step 2:Calculation of channel potential areas for each station Step 3:Unification of channel potential areas Step 4:Mapping of channels onto allotment areas

Dr. Roland Beutler Frequency Planning Department September 2004 The Basic Steps of the Channel Potential Method Mapping of Channels onto Allotment Areas The Basic Steps of the Channel Potential Method Mapping of Channels onto Allotment Areas

Dr. Roland Beutler Frequency Planning Department September 2004 An International Multi-Lateral Example Aut, CH and D in Channel 29 An International Multi-Lateral Example Aut, CH and D in Channel 29

Dr. Roland Beutler Frequency Planning Department September 2004 An International Multi-Lateral Example Aut, CH and D in Channel 29 An International Multi-Lateral Example Aut, CH and D in Channel 29

Dr. Roland Beutler Frequency Planning Department September 2004 An International Multi-Lateral Example Aut, CH and D in Channel 29 An International Multi-Lateral Example Aut, CH and D in Channel 29

Dr. Roland Beutler Frequency Planning Department September 2004 An International Multi-Lateral Example Aut, CH and D in Channel 29 An International Multi-Lateral Example Aut, CH and D in Channel 29

Dr. Roland Beutler Frequency Planning Department September 2004 An International Multi-Lateral Example Aut, CH and D in Channel 29 An International Multi-Lateral Example Aut, CH and D in Channel 29

Dr. Roland Beutler Frequency Planning Department September 2004 An International Multi-Lateral Example Aut, CH and D in Channel 29 An International Multi-Lateral Example Aut, CH and D in Channel 29

Dr. Roland Beutler Frequency Planning Department September 2004 An International Multi-Lateral Example Aut, CH and D in Channel 29 An International Multi-Lateral Example Aut, CH and D in Channel 29

Dr. Roland Beutler Frequency Planning Department September 2004 An International Multi-Lateral Example Aut, CH and D in Channel 29 An International Multi-Lateral Example Aut, CH and D in Channel 29

Dr. Roland Beutler Frequency Planning Department September 2004 An International Multi-Lateral Example Aut, CH and D in Channel 29 An International Multi-Lateral Example Aut, CH and D in Channel 29

Dr. Roland Beutler Frequency Planning Department September 2004 An International Multi-Lateral Example Aut, CH and D in Channel 29 An International Multi-Lateral Example Aut, CH and D in Channel 29

Dr. Roland Beutler Frequency Planning Department September 2004 Some Remarks all available VHF/UHF channels are processed selection of optimal frequency for considered allotment area all available VHF/UHF channels are processed selection of optimal frequency for considered allotment area selection of starting set of transmitters : ERP > X kW other criteria are possible as well note : too many small stations prevent successful application selection of starting set of transmitters : ERP > X kW other criteria are possible as well note : too many small stations prevent successful application re-use distance must be adjusted to cope with sea paths topography can be considered

Dr. Roland Beutler Frequency Planning Department September 2004 Conclusion 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 during the subsequent mapping of frequencies to allotment areas high flexibility when designing the channel potential areas and during the subsequent mapping of frequencies to allotment areas channel potential methods 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 methods can be used to - identify areas where frequencies could be used - assist the preparation of input requirements - coordinate the usage of frequencies between countries

Dr. Roland Beutler Frequency Planning Department September 2004 Thank you very much for your attention ! Questions? Thank you very much for your attention ! Questions?