/*

 * Copyright (c) 2009 CTTC

 *

 * 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: Nicola Baldo <nbaldo@cttc.es>

 */

#ifndef SINGLE_MODEL_SPECTRUM_CHANNEL_H

#define SINGLE_MODEL_SPECTRUM_CHANNEL_H

#include <ns3/spectrum-channel.h>

#include <ns3/spectrum-model.h>

namespace ns3 {

/**

 * \ingroup spectrum

 *

 * @brief SpectrumChannel implementation which handles a single spectrum model

 *

 * All SpectrumPhy layers attached to this SpectrumChannel

 */

class SingleModelSpectrumChannel : public SpectrumChannel

{

public:

  SingleModelSpectrumChannel ();

  static TypeId GetTypeId (void);

  // inherited from SpectrumChannel

  virtual void AddPropagationLossModel (Ptr<PropagationLossModel> loss);

  virtual void AddSpectrumPropagationLossModel (Ptr<SpectrumPropagationLossModel> loss);

  virtual void SetPropagationDelayModel (Ptr<PropagationDelayModel> delay);

  virtual void AddRx (Ptr<SpectrumPhy> phy);

  virtual void StartTx (Ptr<PacketBurst> p,

                        Ptr <SpectrumValue> txPsd,

                        SpectrumType st,

                        Time duration,

                        Ptr<SpectrumPhy> sender);

  // inherited from Channel

  virtual uint32_t GetNDevices (void) const;

  virtual Ptr<NetDevice> GetDevice (uint32_t i) const;

  typedef std::vector<Ptr<SpectrumPhy> > PhyList;

  virtual Ptr<SpectrumPropagationLossModel> GetSpectrumPropagationLossModel (void);

private:

  virtual void DoDispose ();

  /**

   * used internally to reschedule transmission after the propagation delay

   *

   * @param p

   * @param rxPowerSpectrum

   * @param st

   * @param duration

   * @param receiver

   */

  virtual void StartRx (Ptr<PacketBurst> p, Ptr <SpectrumValue> rxPowerSpectrum, SpectrumType st, Time duration, Ptr<SpectrumPhy> receiver);

  /**

   * list of SpectrumPhy instances attached to

   * the channel

   */

  PhyList m_phyList;

  /**

   * SpectrumModel that this channel instance

   * is supporting

   */

  Ptr<const SpectrumModel> m_spectrumModel;

  /**

   * propagation delay model to be used with this channel

   *

   */

  Ptr<PropagationDelayModel> m_propagationDelay;

  /**

    * single-frequency propagation loss model to be used with this channel

    *

    */

  Ptr<PropagationLossModel> m_propagationLoss;

  /**

   * frequency-dependent propagation loss model to be used with this channel

   *

   */

  Ptr<SpectrumPropagationLossModel> m_spectrumPropagationLoss;

  double m_maxLossDb;

};

}

#endif /* SINGLE_MODEL_SPECTRUM_CHANNEL_H */