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Allotments

Allotments. Allotments. Allotments are frequency channelling plans Basic parameters Minimum frequency Maximum frequency Channel separation Bandwidth on allotment frequency Number of channels (instead of channel separation) Duplex distance (if applicable)

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Allotments

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  1. Allotments WRAP 0967C

  2. Allotments • Allotments are frequency channelling plans • Basic parameters • Minimum frequency • Maximum frequency • Channel separation • Bandwidth on allotment frequency • Number of channels (instead of channel separation) • Duplex distance (if applicable) • Channel arrangement in terms of polarisation • Assigned or Reference frequency WRAP 0967C

  3. Allotments • Channel arrangements • Polarisation independent • Alternated, where every second channel has one polarisation and every other second has another polarisation • Co-channel band re-use, where the same frequency is used twice with different polarisation • Interleaved band re-use, where interleaved frequencies use one polarisation and the ordinary another • Interleaved polarisation independent WRAP 0967C

  4. Allotments • Create (new) allotment user interface WRAP 0967C

  5. Allotments • Blocking lists can be used to exclude frequencies • Frequency search can be used to get an overview of the frequency use in the area of interest. • Frequencies from the search can be manually excluded or included from the allotment WRAP 0967C

  6. Allotments • Result of a frequency search WRAP 0967C

  7. Allotments • Edit allotment user interface WRAP 0967C

  8. Allotments • Administrative data can be added to the allotment • Compatibility • Designation of emission • Validity date and time • Geographical area WRAP 0967C

  9. Allotments • Allotments can also be created directly from station assignments • Allotments can be merged with other allotments or frequency lists to form a new allotment WRAP 0967C

  10. Divide allotment • One allotment can be divided into several sub-allotments • Consideration to other allotments • Wanted frequency separation between frequencies are entered manually • Frequency separation can be calculated • The user enters the number of frequencies for the new allotments • Frequencies can be assigned a hierarchical level WRAP 0967C

  11. Divide allotment • Divide allotment user interface WRAP 0967C

  12. Divide allotment • Genetic algorithm fitness function • N is the total number of frequencies in all the destination allotments, M is the total number of frequencies in all the consideration allotments • ij is the minimum frequency separation between frequency i and frequency j. The value depends on if the frequencies are in the same allotment or not and the levels of the frequencies •  is a factor for prioritised frequencies WRAP 0967C

  13. Divide allotment • Result of Divide allotment with conflicts listed WRAP 0967C

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