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  • Research Article
  • Open Access

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

  • Guillaume de la Roche1Email author,
  • Paul Flipo2,
  • Zhihua Lai3,
  • Guillaume Villemaud2,
  • Jie Zhang1 and
  • Jean-Marie Gorce2
EURASIP Journal on Wireless Communications and Networking20102010:215352

Received: 2 July 2010

Accepted: 13 August 2010

Published: 16 August 2010


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 NetworkCombine ModelOptical ModelFull ArticleDifference Model

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Authors’ Affiliations

CWiND, University of Bedfordshire, Luton, UK
CITI Laboratory/INSA, University of Lyon, Villeurbanne, France
Ranplan Wireless Network Design Ltd, Luton, UK


© Guillaume de la Roche et al. 2010

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.