ConnectionManager.cc

#include <set>
#include <cmath>

#include "ConnectionManager.h"
#include "BaseWorldUtility.h"

#ifndef ccEV
#define ccEV (ev.isDisabled()||!coreDebug) ? ev : ev << getName() << ": "
#endif

Define_Module( ConnectionManager );

double ConnectionManager::calcInterfDist()
{
  double interfDistance;

  //the minimum carrier frequency for this cell
  double carrierFrequency = par("carrierFrequency").doubleValue();
  //maximum transmission power possible
  double pMax             = par("pMax").doubleValue();
  if (pMax <=0) {
    error("Max transmission power is <=0!");
  }
  //minimum signal attenuation threshold
  double sat              = par("sat").doubleValue();
  //minimum path loss coefficient
  double alpha            = par("alpha").doubleValue();

  double waveLength     = (BaseWorldUtility::speedOfLight/carrierFrequency);
  //minimum power level to be able to physically receive a signal
  double minReceivePower = pow(10.0, sat/10.0);

  interfDistance = pow(waveLength * waveLength * pMax
                 / (16.0*M_PI*M_PI*minReceivePower),
               1.0 / alpha);

  ccEV << "max interference distance:" << interfDistance << endl;

  return interfDistance;
}