propagation-loss-model.h

Go to the documentation of this file.

/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2005,2006,2007 INRIA
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as 
 * published by the Free Software Foundation;
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
 * Contributions: Timo Bingmann <timo.bingmann@student.kit.edu>
 * Contributions: Gary Pei <guangyu.pei@boeing.com> for fixed RSS
 * Contributions: Tom Hewer <tomhewer@mac.com> for two ray ground model
 *                Pavel Boyko <boyko@iitp.ru> for matrix
 */

#ifndef PROPAGATION_LOSS_MODEL_H
#define PROPAGATION_LOSS_MODEL_H

#include "ns3/object.h"
#include "ns3/random-variable-stream.h"
#include <map>

namespace ns3 {

class MobilityModel;

class PropagationLossModel : public Object
{
public:
  static TypeId GetTypeId (void);

  PropagationLossModel ();
  virtual ~PropagationLossModel ();

  void SetNext (Ptr<PropagationLossModel> next);

  Ptr<PropagationLossModel> GetNext ();

  double CalcRxPower (double txPowerDbm,
                      Ptr<MobilityModel> a,
                      Ptr<MobilityModel> b) const;

  int64_t AssignStreams (int64_t stream);

private:
  PropagationLossModel (const PropagationLossModel &o);
  PropagationLossModel &operator = (const PropagationLossModel &o);
  virtual double DoCalcRxPower (double txPowerDbm,
                                Ptr<MobilityModel> a,
                                Ptr<MobilityModel> b) const = 0;

  virtual int64_t DoAssignStreams (int64_t stream) = 0;

  Ptr<PropagationLossModel> m_next;
};

class RandomPropagationLossModel : public PropagationLossModel
{
public:
  static TypeId GetTypeId (void);

  RandomPropagationLossModel ();
  virtual ~RandomPropagationLossModel ();

private:
  RandomPropagationLossModel (const RandomPropagationLossModel &o);
  RandomPropagationLossModel & operator = (const RandomPropagationLossModel &o);
  virtual double DoCalcRxPower (double txPowerDbm,
                                Ptr<MobilityModel> a,
                                Ptr<MobilityModel> b) const;
  virtual int64_t DoAssignStreams (int64_t stream);
  Ptr<RandomVariableStream> m_variable;
};

class FriisPropagationLossModel : public PropagationLossModel
{
public:
  static TypeId GetTypeId (void);
  FriisPropagationLossModel ();
  void SetLambda (double frequency, double speed);
  void SetLambda (double lambda);
  void SetSystemLoss (double systemLoss);

  void SetMinDistance (double minDistance);

  double GetMinDistance (void) const;

  double GetLambda (void) const;
  double GetSystemLoss (void) const;

private:
  FriisPropagationLossModel (const FriisPropagationLossModel &o);
  FriisPropagationLossModel & operator = (const FriisPropagationLossModel &o);
  virtual double DoCalcRxPower (double txPowerDbm,
                                Ptr<MobilityModel> a,
                                Ptr<MobilityModel> b) const;
  virtual int64_t DoAssignStreams (int64_t stream);
  double DbmToW (double dbm) const;
  double DbmFromW (double w) const;

  static const double PI;
  double m_lambda;
  double m_systemLoss;
  double m_minDistance;
};

class TwoRayGroundPropagationLossModel : public PropagationLossModel
{
public:
  static TypeId GetTypeId (void);
  TwoRayGroundPropagationLossModel ();
  void SetLambda (double frequency, double speed);
  void SetLambda (double lambda);
  void SetSystemLoss (double systemLoss);
  void SetMinDistance (double minDistance);
  double GetMinDistance (void) const;
  double GetLambda (void) const;
  double GetSystemLoss (void) const;
  void SetHeightAboveZ (double heightAboveZ);

private:
  TwoRayGroundPropagationLossModel (const TwoRayGroundPropagationLossModel &o);
  TwoRayGroundPropagationLossModel & operator = (const TwoRayGroundPropagationLossModel &o);
  virtual double DoCalcRxPower (double txPowerDbm,
                                Ptr<MobilityModel> a,
                                Ptr<MobilityModel> b) const;
  virtual int64_t DoAssignStreams (int64_t stream);
  double DbmToW (double dbm) const;
  double DbmFromW (double w) const;

  static const double PI;
  double m_lambda;
  double m_systemLoss;
  double m_minDistance;
  double m_heightAboveZ;
};

class LogDistancePropagationLossModel : public PropagationLossModel
{
public:
  static TypeId GetTypeId (void);
  LogDistancePropagationLossModel ();

  void SetPathLossExponent (double n);
  double GetPathLossExponent (void) const;

  void SetReference (double referenceDistance, double referenceLoss);

private:
  LogDistancePropagationLossModel (const LogDistancePropagationLossModel &o);
  LogDistancePropagationLossModel & operator = (const LogDistancePropagationLossModel &o);
  virtual double DoCalcRxPower (double txPowerDbm,
                                Ptr<MobilityModel> a,
                                Ptr<MobilityModel> b) const;
  virtual int64_t DoAssignStreams (int64_t stream);
  static Ptr<PropagationLossModel> CreateDefaultReference (void);

  double m_exponent;
  double m_referenceDistance;
  double m_referenceLoss;
};

class ThreeLogDistancePropagationLossModel : public PropagationLossModel
{
public:
  static TypeId GetTypeId (void);
  ThreeLogDistancePropagationLossModel ();

  // Parameters are all accessible via attributes.

private:
  ThreeLogDistancePropagationLossModel (const ThreeLogDistancePropagationLossModel& o);
  ThreeLogDistancePropagationLossModel& operator= (const ThreeLogDistancePropagationLossModel& o);

  virtual double DoCalcRxPower (double txPowerDbm,
                                Ptr<MobilityModel> a,
                                Ptr<MobilityModel> b) const;
  virtual int64_t DoAssignStreams (int64_t stream);

  double m_distance0;
  double m_distance1;
  double m_distance2;

  double m_exponent0;
  double m_exponent1;
  double m_exponent2;

  double m_referenceLoss;
};

class NakagamiPropagationLossModel : public PropagationLossModel
{
public:
  static TypeId GetTypeId (void);

  NakagamiPropagationLossModel ();

  // Parameters are all accessible via attributes.

private:
  NakagamiPropagationLossModel (const NakagamiPropagationLossModel& o);
  NakagamiPropagationLossModel& operator= (const NakagamiPropagationLossModel& o);

  virtual double DoCalcRxPower (double txPowerDbm,
                                Ptr<MobilityModel> a,
                                Ptr<MobilityModel> b) const;
  virtual int64_t DoAssignStreams (int64_t stream);

  double m_distance1;
  double m_distance2;

  double m_m0;
  double m_m1;
  double m_m2;

  Ptr<ErlangRandomVariable>  m_erlangRandomVariable;
  Ptr<GammaRandomVariable> m_gammaRandomVariable;
};

class FixedRssLossModel : public PropagationLossModel
{
public:
  static TypeId GetTypeId (void);

  FixedRssLossModel ();
  virtual ~FixedRssLossModel ();
  void SetRss (double rss);

private:
  FixedRssLossModel (const FixedRssLossModel &o);
  FixedRssLossModel & operator = (const FixedRssLossModel &o);
  virtual double DoCalcRxPower (double txPowerDbm,
                                Ptr<MobilityModel> a,
                                Ptr<MobilityModel> b) const;
  virtual int64_t DoAssignStreams (int64_t stream);
  double m_rss;
};

class MatrixPropagationLossModel : public PropagationLossModel
{
public:
  static TypeId GetTypeId (void);

  MatrixPropagationLossModel ();
  virtual ~MatrixPropagationLossModel ();

  void SetLoss (Ptr<MobilityModel> a, Ptr<MobilityModel> b, double loss, bool symmetric = true);
  void SetDefaultLoss (double);

private:
  virtual double DoCalcRxPower (double txPowerDbm,
                                Ptr<MobilityModel> a,
                                Ptr<MobilityModel> b) const;
  virtual int64_t DoAssignStreams (int64_t stream);
private:
  double m_default; 

  typedef std::pair< Ptr<MobilityModel>, Ptr<MobilityModel> > MobilityPair; 
  std::map<MobilityPair, double> m_loss;
};

class RangePropagationLossModel : public PropagationLossModel
{
public:
  static TypeId GetTypeId (void);
  RangePropagationLossModel ();
private:
  RangePropagationLossModel (const RangePropagationLossModel& o);
  RangePropagationLossModel& operator= (const RangePropagationLossModel& o);
  virtual double DoCalcRxPower (double txPowerDbm,
                                Ptr<MobilityModel> a,
                                Ptr<MobilityModel> b) const;
  virtual int64_t DoAssignStreams (int64_t stream);
private:
  double m_range;
};

} // namespace ns3

#endif /* PROPAGATION_LOSS_MODEL_H */