/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */

/*

 * Copyright (c) 2010 TELEMATICS LAB, DEE - Politecnico di Bari

 *

 * 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: Giuseppe Piro  <g.piro@poliba.it>

 * Author: Marco Miozzo <marco.miozzo@cttc.es>

 */

#ifndef ENB_LTE_PHY_H

#define ENB_LTE_PHY_H

#include "lte-phy.h"

#include <ns3/lte-enb-phy-sap.h>

#include <map>

#include <ns3/lte-ue-phy.h>

namespace ns3 {

class PacketBurst;

class LteNetDevice;

/**

 * LteEnbPhy models the physical layer for the eNodeB

 */

class LteEnbPhy : public LtePhy

{

  friend class EnbMemberLteEnbPhySapProvider;

public:

  LteEnbPhy ();

  /**

   * \brief Create the eNB phy layer

   * \param d the device where the phy layer is attached

   */

  LteEnbPhy (Ptr<LteNetDevice> d);

  virtual ~LteEnbPhy ();

  static TypeId GetTypeId (void);

  /**

  * \brief Get the PHY SAP provider

  * \return a pointer to the SAP Provider of the PHY

  */

  LteEnbPhySapProvider* GetLteEnbPhySapProvider ();

  /**

  * \brief Set the PHY SAP User

  * \param s a pointer to the PHY SAP user

  */

  void SetLteEnbPhySapUser (LteEnbPhySapUser* s);

  /**

  * \brief Queue the MAC PDU to be sent

  * \param p the MAC PDU to sent

  */

  virtual void DoSendMacPdu (Ptr<Packet> p);

  void DoSetDownlinkSubChannels ();

  /**

   * \brief Create the PSD for TX

   */

  virtual Ptr<SpectrumValue> CreateTxPowerSpectralDensity ();

  /**

   * \brief Calculate the channel quality for a given UE

   * \param sinr a list of computed SINR

   * \param ue the UE

   */

  void CalcChannelQualityForUe (std::vector <double> sinr, Ptr<LteSpectrumPhy> ue);

  /**

   * \brief Send the control message

   * \param msg the message to send

   */

  // virtual void SendIdealControlMessage (Ptr<IdealControlMessage> msg);  // legacy

  /**

   * \brief Receive the control message

   * \param msg the received message

   */

  virtual void ReceiveIdealControlMessage (Ptr<IdealControlMessage> msg);

  void DoSendIdealControlMessage (Ptr<IdealControlMessage> msg);

  bool AddUePhy (uint8_t rnti, Ptr<LteUePhy> phy);

  bool DeleteUePhy (uint8_t rnti);

  /**

   * \brief Start a LTE frame

   */

  void StartFrame (void);

  /**

   * \brief Start a LTE sub frame

   */

  void StartSubFrame (void);

  /**

   * \brief End a LTE sub frame

   */

  void EndSubFrame (void);

  /**

   * \brief End a LTE frame

   */

  void EndFrame (void);

  /**

   * \brief PhySpectrum received a new PHY-PDU

   */

  void PhyPduReceived (Ptr<Packet> p);

  // inherited from LtePhy

  virtual void GenerateCqiFeedback (const SpectrumValue& sinr);

private:

  std::map <uint8_t, Ptr<LteUePhy> > m_ueAttached;

  LteEnbPhySapProvider* m_enbPhySapProvider;

  LteEnbPhySapUser* m_enbPhySapUser;

  uint32_t m_nrFrames;

  uint32_t m_nrSubFrames;

};

}

#endif /* LTE_ENB_PHY_H */