thompson-sampling-wifi-manager.h

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2021 IITP RAS
 *
 * 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: Alexander Krotov <krotov@iitp.ru>
 */

#ifndef THOMPSON_SAMPLING_WIFI_MANAGER_H
#define THOMPSON_SAMPLING_WIFI_MANAGER_H

#include "ns3/random-variable-stream.h"

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

namespace ns3 {

class ThompsonSamplingWifiManager : public WifiRemoteStationManager
{
public:
  static TypeId GetTypeId (void);
  ThompsonSamplingWifiManager ();
  virtual ~ThompsonSamplingWifiManager ();

  int64_t AssignStreams (int64_t stream) override;

private:
  WifiRemoteStation *DoCreateStation () const override;
  void DoReportRxOk (WifiRemoteStation *station,
                     double rxSnr, WifiMode txMode) override;
  void DoReportRtsFailed (WifiRemoteStation *station) override;
  void DoReportDataFailed (WifiRemoteStation *station) override;
  void DoReportRtsOk (WifiRemoteStation *station,
                      double ctsSnr, WifiMode ctsMode, double rtsSnr) override;
  void DoReportDataOk (WifiRemoteStation *station,
                       double ackSnr, WifiMode ackMode, double dataSnr,
                       uint16_t dataChannelWidth, uint8_t dataNss) override;
  void DoReportAmpduTxStatus (WifiRemoteStation *station,
                              uint16_t nSuccessfulMpdus, uint16_t nFailedMpdus,
                              double rxSnr, double dataSnr, uint16_t dataChannelWidth, uint8_t dataNss) override;
  void DoReportFinalRtsFailed (WifiRemoteStation *station) override;
  void DoReportFinalDataFailed (WifiRemoteStation *station) override;
  WifiTxVector DoGetDataTxVector (WifiRemoteStation *station) override;
  WifiTxVector DoGetRtsTxVector (WifiRemoteStation *station) override;

  void InitializeStation (WifiRemoteStation *station) const;

  void UpdateNextMode (WifiRemoteStation *station) const;

  void Decay (WifiRemoteStation *st, size_t i) const;

  uint16_t GetModeGuardInterval (WifiRemoteStation *st, WifiMode mode) const;

  double SampleBetaVariable (uint64_t alpha, uint64_t beta) const;

  Ptr<GammaRandomVariable> m_gammaRandomVariable; 

  double m_decay; 

  TracedValue<uint64_t> m_currentRate; 
};

} //namespace ns3

#endif /* THOMPSON_SAMPLING_WIFI_MANAGER_H */