channel-condition-model.h

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2019 SIGNET Lab, Department of Information Engineering,
 * University of Padova
 *
 * 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
 */
 
#ifndef CHANNEL_CONDITION_MODEL_H
#define CHANNEL_CONDITION_MODEL_H
 
#include "ns3/object.h"
#include "ns3/random-variable-stream.h"
#include "ns3/vector.h"
#include "ns3/nstime.h"
#include <unordered_map>
 
namespace ns3 {
 
class MobilityModel;
 
class ChannelCondition : public Object
{
 
public:
  enum LosConditionValue
  {
    LOS, 
    NLOS, 
    NLOSv, 
    LC_ND 
  };
  
  enum O2iConditionValue
  {
    O2O, 
    O2I, 
    I2I, 
    O2I_ND 
  };
 
  static TypeId GetTypeId (void);
 
  ChannelCondition ();
  
  ChannelCondition (LosConditionValue losCondition, O2iConditionValue o2iCondition = O2O);
 
  virtual ~ChannelCondition ();
 
  LosConditionValue GetLosCondition () const;
 
  void SetLosCondition (LosConditionValue losCondition);
  
  O2iConditionValue GetO2iCondition () const;
 
  void SetO2iCondition (O2iConditionValue o2iCondition);
  
  bool IsLos () const;
  
  bool IsNlos () const;
  
  bool IsNlosv () const;
  
  bool IsO2i () const;
  
  bool IsO2o () const;
  
  bool IsI2i () const;
  
  bool IsEqual (LosConditionValue losCondition, O2iConditionValue o2iCondition) const;
 
private:
  LosConditionValue m_losCondition; 
  O2iConditionValue m_o2iCondition; 
  
  friend std::ostream& operator<< (std::ostream& os, LosConditionValue cond);
 
};
 
class ChannelConditionModel : public Object
{
public:
  static TypeId GetTypeId (void);
 
  ChannelConditionModel ();
 
  virtual ~ChannelConditionModel ();
 
  virtual Ptr<ChannelCondition> GetChannelCondition (Ptr<const MobilityModel> a, Ptr<const MobilityModel> b) const = 0;
 
  virtual int64_t AssignStreams (int64_t stream) = 0;
 
  ChannelConditionModel (const ChannelConditionModel&) = delete;
 
  ChannelConditionModel &operator = (const ChannelConditionModel &) = delete;
};
 
class AlwaysLosChannelConditionModel : public ChannelConditionModel
{
public:
  static TypeId GetTypeId (void);
 
  AlwaysLosChannelConditionModel ();
 
  virtual ~AlwaysLosChannelConditionModel ();
 
  virtual Ptr<ChannelCondition> GetChannelCondition (Ptr<const MobilityModel> a, Ptr<const MobilityModel> b) const override;
 
  AlwaysLosChannelConditionModel (const AlwaysLosChannelConditionModel&) = delete;
 
  AlwaysLosChannelConditionModel &operator = (const AlwaysLosChannelConditionModel &) = delete;
 
  virtual int64_t AssignStreams (int64_t stream) override;
};
 
class NeverLosChannelConditionModel : public ChannelConditionModel
{
public:
  static TypeId GetTypeId (void);
 
  NeverLosChannelConditionModel ();
 
  virtual ~NeverLosChannelConditionModel ();
 
  virtual Ptr<ChannelCondition> GetChannelCondition (Ptr<const MobilityModel> a, Ptr<const MobilityModel> b) const override;
 
  NeverLosChannelConditionModel (const NeverLosChannelConditionModel&) = delete;
 
  NeverLosChannelConditionModel &operator = (const NeverLosChannelConditionModel &) = delete;
 
  virtual int64_t AssignStreams (int64_t stream) override;
};
 
class NeverLosVehicleChannelConditionModel : public ChannelConditionModel
{
public:
  static TypeId GetTypeId (void);
 
  NeverLosVehicleChannelConditionModel ();
 
  virtual ~NeverLosVehicleChannelConditionModel ();
 
  virtual Ptr<ChannelCondition> GetChannelCondition (Ptr<const MobilityModel> a, Ptr<const MobilityModel> b) const override;
 
  NeverLosVehicleChannelConditionModel (const NeverLosVehicleChannelConditionModel&) = delete;
 
  NeverLosVehicleChannelConditionModel &operator = (const NeverLosVehicleChannelConditionModel &) = delete;
 
  virtual int64_t AssignStreams (int64_t stream) override;
};
 
class ThreeGppChannelConditionModel : public ChannelConditionModel
{
public:
  static TypeId GetTypeId (void);
 
  ThreeGppChannelConditionModel ();
 
  virtual ~ThreeGppChannelConditionModel () override;
 
  virtual Ptr<ChannelCondition> GetChannelCondition (Ptr<const MobilityModel> a, Ptr<const MobilityModel> b) const override;
 
  virtual int64_t AssignStreams (int64_t stream) override;
 
protected:
  virtual void DoDispose () override;
  
  enum VehicleDensity
  {
    LOW,
    MEDIUM,
    HIGH,
    INVALID
  };
 
  static double Calculate2dDistance (const Vector &a, const Vector &b);
  
  Ptr<UniformRandomVariable> m_uniformVar; 
 
private:
  Ptr<ChannelCondition> ComputeChannelCondition (Ptr<const MobilityModel> a, Ptr<const MobilityModel> b) const;
  
  virtual double ComputePlos (Ptr<const MobilityModel> a, Ptr<const MobilityModel> b) const = 0;
  
  virtual double ComputePnlos (Ptr<const MobilityModel> a, Ptr<const MobilityModel> b) const;
 
  static uint32_t GetKey (Ptr<const MobilityModel> a, Ptr<const MobilityModel> b);
 
  struct Item
  {
    Ptr<ChannelCondition> m_condition; 
    Time m_generatedTime; 
  };
 
  std::unordered_map<uint32_t, Item> m_channelConditionMap; 
  Time m_updatePeriod; 
};
 
class ThreeGppRmaChannelConditionModel : public ThreeGppChannelConditionModel
{
public:
  static TypeId GetTypeId (void);
 
  ThreeGppRmaChannelConditionModel ();
 
  virtual ~ThreeGppRmaChannelConditionModel () override;
 
private:
  virtual double ComputePlos (Ptr<const MobilityModel> a, Ptr<const MobilityModel> b) const override;
};
 
class ThreeGppUmaChannelConditionModel : public ThreeGppChannelConditionModel
{
public:
  static TypeId GetTypeId (void);
 
  ThreeGppUmaChannelConditionModel ();
 
  virtual ~ThreeGppUmaChannelConditionModel () override;
 
private:
  virtual double ComputePlos (Ptr<const MobilityModel> a, Ptr<const MobilityModel> b) const override;
};
 
class ThreeGppUmiStreetCanyonChannelConditionModel : public ThreeGppChannelConditionModel
{
public:
  static TypeId GetTypeId (void);
 
  ThreeGppUmiStreetCanyonChannelConditionModel ();
 
  virtual ~ThreeGppUmiStreetCanyonChannelConditionModel () override;
 
private:
  virtual double ComputePlos (Ptr<const MobilityModel> a, Ptr<const MobilityModel> b) const override;
};
 
class ThreeGppIndoorMixedOfficeChannelConditionModel : public ThreeGppChannelConditionModel
{
public:
  static TypeId GetTypeId (void);
 
  ThreeGppIndoorMixedOfficeChannelConditionModel ();
 
  virtual ~ThreeGppIndoorMixedOfficeChannelConditionModel () override;
 
private:
  virtual double ComputePlos (Ptr<const MobilityModel> a, Ptr<const MobilityModel> b) const override;
};
 
class ThreeGppIndoorOpenOfficeChannelConditionModel : public ThreeGppChannelConditionModel
{
public:
  static TypeId GetTypeId (void);
 
  ThreeGppIndoorOpenOfficeChannelConditionModel ();
 
  virtual ~ThreeGppIndoorOpenOfficeChannelConditionModel () override;
 
private:
  virtual double ComputePlos (Ptr<const MobilityModel> a, Ptr<const MobilityModel> b) const override;
};
 
} // end ns3 namespace
 
#endif /* CHANNEL_CONDITION_MODEL_H */