rraa-wifi-manager.h

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2005,2006 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: Federico Maguolo <maguolof@dei.unipd.it>
 */

#ifndef RRAA_WIFI_MANAGER_H
#define RRAA_WIFI_MANAGER_H

#include "ns3/nstime.h"
#include "ns3/traced-value.h"
#include "wifi-remote-station-manager.h"

namespace ns3 {

struct RraaWifiRemoteStation;

struct WifiRraaThresholds
  {
    double m_ori; 
    double m_mtl; 
    uint32_t m_ewnd; 
  };

typedef std::vector<std::pair<WifiRraaThresholds, WifiMode> > RraaThresholdsTable;

class RraaWifiManager : public WifiRemoteStationManager
{
public:
  static TypeId GetTypeId (void);

  RraaWifiManager ();
  virtual ~RraaWifiManager ();

  // Inherited from WifiRemoteStationManager
  virtual void SetupPhy (const Ptr<WifiPhy> phy);
  virtual void SetupMac (const Ptr<WifiMac> mac);


private:
  // Overridden from base class.
  void DoInitialize (void);
  WifiRemoteStation * DoCreateStation (void) const;
  void DoReportRxOk (WifiRemoteStation *station,
                     double rxSnr, WifiMode txMode);
  void DoReportRtsFailed (WifiRemoteStation *station);
  void DoReportDataFailed (WifiRemoteStation *station);
  void DoReportRtsOk (WifiRemoteStation *station,
                      double ctsSnr, WifiMode ctsMode, double rtsSnr);
  void DoReportDataOk (WifiRemoteStation *station,
                       double ackSnr, WifiMode ackMode, double dataSnr);
  void DoReportFinalRtsFailed (WifiRemoteStation *station);
  void DoReportFinalDataFailed (WifiRemoteStation *station);
  WifiTxVector DoGetDataTxVector (WifiRemoteStation *station);
  WifiTxVector DoGetRtsTxVector (WifiRemoteStation *station);
  bool DoNeedRts (WifiRemoteStation *st,
                  Ptr<const Packet> packet, bool normally);
  bool IsLowLatency (void) const;

  void CheckInit (RraaWifiRemoteStation *station);
  uint8_t GetMaxRate (RraaWifiRemoteStation *station) const;
  void CheckTimeout (RraaWifiRemoteStation *station);
  void RunBasicAlgorithm (RraaWifiRemoteStation *station);
  void ARts (RraaWifiRemoteStation *station);
  void ResetCountersBasic (RraaWifiRemoteStation *station);
  void InitThresholds (RraaWifiRemoteStation *station);
  WifiRraaThresholds GetThresholds (RraaWifiRemoteStation *station, WifiMode mode) const;
  WifiRraaThresholds GetThresholds (RraaWifiRemoteStation *station, uint8_t rate) const;
  Time GetCalcTxTime (WifiMode mode) const;
  void AddCalcTxTime (WifiMode mode, Time t);
  typedef std::vector<std::pair<Time,WifiMode> > TxTime;

  TxTime m_calcTxTime;     
  Time m_sifs;             
  Time m_difs;             

  uint32_t m_frameLength;  
  uint32_t m_ackLength;    

  bool m_basic;    
  Time m_timeout;  
  double m_alpha;  
  double m_beta;   
  double m_tau;    

  TracedValue<uint64_t> m_currentRate; 
};

} //namespace ns3

#endif /* RRAA_WIFI_MANAGER_H */