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  • Research Article
  • Open Access

Implementation and Validation of a New Combined Model for Outdoor to Indoor Radio Coverage Predictions

  • 1Email author,
  • 2,
  • 3,
  • 2,
  • 1 and
  • 2
EURASIP Journal on Wireless Communications and Networking20102010:215352

  • Received: 2 July 2010
  • Accepted: 13 August 2010
  • Published:


A new model used to compute the outdoor to indoor signal strength emitted from an outdoor base station is presented. This model is based on the combination of 2 existing models: IRLA (Intelligent Ray Launching), a 3D Ray Optical model especially optimized for outdoor predictions, and MR-FDPF (Multiresolution Frequency Domain ParFlow), a 2D Finite Difference model initially implemented for indoor propagation. The combination of these models implies the conversion of the ray launching paths on the border of the buildings, into virtual source flows that will be used as input for the indoor model. The performance of the new combined model is evaluated via measurements at 2 frequencies (WiMAX and WiFi). This solution appears to be efficient for radio network planning, in term of both accuracy and computational cost.


  • Radio Network
  • Combine Model
  • Optical Model
  • Full Article
  • Difference Model

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Authors’ Affiliations

CWiND, University of Bedfordshire, Park Square Campus, Luton, LU1 3JU, UK
CITI Laboratory/INSA, University of Lyon, 69621 Villeurbanne, France
Ranplan Wireless Network Design Ltd, 1 Kensworth Gate, Luton, LU6 3HS, UK