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Automatic Frequency Planning (AFP)

 

Atoll includes a powerful and flexible GSM AFP module that is being used by a large number of operators worldwide. It is based on sophisticated optimisation techniques and includes advanced features such as combined automatic/interactive frequency planning and optimisation of TRX allocation vs. interference conditions.

 

The Atoll GSM AFP module allows combining multiple interference matrices generated from predictions and real network data.

 

Atoll also includes dedicated LTE, WiMAX, and Wi-Fi AFP modules that support technology-specific allocation features.

 

GSM AFP

  • Modelling of frequency bands, carrier layers, and border constraints
  • Support for vendor equipment constraints/features
  • Generation, import, edition, storage, and combination of interference matrices
  • User-definable constraints and editable cost function
  • Allocation of frequency hopping parameters (MAL, HSN, MAIO)
  • Combined automatic/interactive frequency planning on map (IFP)
  • Optimisation of TRX allocation vs. interference conditions
  • BSIC planning
  • Intermodulation interference reduction

 

LTE AFP

  • Full and fractional automatic frequency planning
  • Interference-based frequency plan optimisation target (cost function)
    • - Interference matrices
    • - Neighbours, neighbours of neighbours, co-neighbours
    • - Reuse distance
  • User-definable constraints and editable cost function
  • Generation, import, edition, storage, and use of interference matrices
  • Support for multi-carrier and multi-band networks
  • Automatic physical cell ID planning considering PSS, SSS, RS, UL DMRS, and PCFICH collisions
  • Automatic PRACH RSI planning

 

WiMAX AFP

  • Full and fractional automatic frequency planning
  • Interference-based frequency plan optimisation target (cost function)
    • - Interference matrices
    • - Neighbours, neighbours of neighbours, co-neighbours
    • - Reuse distance
  • User-definable constraints and editable cost function
  • Generation, import, edition, storage, and use of interference matrices
  • Support for multi-carrier and multi-band networks
  • Automatic preamble index planning, downlink and uplink permbase planning