An algorithm for fast REM construction

  • Grimoud S
  • Sayrac B
  • Ben Jemaa S
 et al. 
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Abstract

The Radio Environment Map (REM) stores radio environmental information that can be used to enhance cognitive radio resource management in wireless networks. In this paper, we propose an iterative REM building process based on Kriging interpolation technique that builds the REM using geolocated measurements performed by mobile terminals. As terminal measurements are costly in terms of signalling and battery consumption, we propose an algorithm that chooses the most appropriate measurements to be requested to the mobiles. We compare the performance of this algorithm with a random choice of measurements and show that our algorithm reduces the squared error of the power map by 16%. The proposed algorithm has also the merit of being fast enough to be implemented in an online fashion.

Author-supplied keywords

  • Battery charge measurement
  • Correlation
  • Interpolation
  • Kriging interpolation technique
  • Measurement uncertainty
  • Mobile communication
  • Power measurement
  • Shadow mapping
  • battery consumption
  • cognitive radio
  • cognitive radio resource management
  • fast REM construction
  • geolocated measurements
  • iterative REM building process
  • iterative methods
  • mobile terminals
  • mobility management (mobile radio)
  • radio environment map
  • radio environmental information
  • terminal measurements

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Authors

  • S. Grimoud

  • B. Sayrac

  • S. Ben Jemaa

  • E. Moulines

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