Coordinating Frequency

Spectrum article_ rs

Example of the international plan (MA02revCO07 for L-band, picture from the draft ECC Report 188)

The basic task of radio spectrum regulation  is to eliminate the possibilities of interference.  Any use of spectrum has three dimensions;  frequency, place and time. If more users  are transmitting at the same frequency  in the same place and at the same time  their communication will be damaged or  interrupted. An example would be WiFi or an  overcrowded FM band.

We need to avoid interference, for this reason  plans are prepared and radio channels  are coordinated on both a national and  international level. It could be solved on the  principle of first come, first served, meaning  the first applicant will receive the requested  frequency and the second one should choose  another one. This principle is workable only  if there is a very large amount of spectrum  available. otherwise it could lead to a situation  where some users have more spectrum  resources than others. All countries should  have equal rights to use spectrum and that  is why the International Telecommunication  Union is involved in the coordination and  planning of spectrum allocation.

The differences between international and national spectrum planning

International plans are in their nature unlikely  to respect different terrains. Consequently  coordination between neighbouring countries is  needed before transmitters can be launched.  often there is the possibility to arrange for  more transmitters using frequencies which  are not included in the international plan.

International agreements and involves the  spectrum users as they have all the relevant  information about radio conditions in the  localities.  International agreements and plans like the  Stockholm 61 Agreement are expected to  be a transparent to provide a predictable  environment for businesses. Currently the  situation is changing and the Geneva 2006  agreement which is still not fully implemented  is broken by so called digital dividends.  The agreement does not give a certainty  about long term use of already planned and  coordinated frequency.

The latest development in the EU shows that  EU policy takes priority over any national  plans. In document RsCoM-57 related to 800  Mhz (p.3) the Commission wrote: ’In several  cases, derogation requests are justified by  the continued use of the 800 Mhz band for  broadcasting purposes, either analogue or  digital, in particular in border areas. Member  states should take appropriate measures  to prevent the spill-over of broadcasting  emissions from their territory into adjacent  Member state.’

Is EU limiting international agreement?

WorldDMB members are invited to the  Regulatory and spectrum Committee meeting  where issues such as these are discussed. Visit the WorldDMB website for more  information:

Radim Soukenka
WorldDMB Regulatory and Spectrum Committee



This entry was posted on February 25, 2013 by in Asia Pacific, Digital Radio Rollout, Europe, Spectrum and Regulation.

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