tdtbfq-ff-mac-scheduler.h

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2011 Centre Tecnologic de Telecomunicacions de Catalunya (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: Marco Miozzo <marco.miozzo@cttc.es>
 * Modification: Dizhi Zhou <dizhi.zhou@gmail.com>    // modify codes related to downlink scheduler
 */

#ifndef TDTBFQ_FF_MAC_SCHEDULER_H
#define TDTBFQ_FF_MAC_SCHEDULER_H

#include <ns3/lte-common.h>
#include <ns3/ff-mac-csched-sap.h>
#include <ns3/ff-mac-sched-sap.h>
#include <ns3/ff-mac-scheduler.h>
#include <vector>
#include <map>
#include <ns3/nstime.h>
#include <ns3/lte-amc.h>
#include <ns3/lte-ffr-sap.h>

// value for SINR outside the range defined by FF-API, used to indicate that there
// is no CQI for this element
#define NO_SINR -5000


#define HARQ_PROC_NUM 8
#define HARQ_DL_TIMEOUT 11

namespace ns3 {


typedef std::vector < uint8_t > DlHarqProcessesStatus_t;
typedef std::vector < uint8_t > DlHarqProcessesTimer_t;
typedef std::vector < DlDciListElement_s > DlHarqProcessesDciBuffer_t;
typedef std::vector < std::vector <struct RlcPduListElement_s> > RlcPduList_t; // vector of the LCs and layers per UE
typedef std::vector < RlcPduList_t > DlHarqRlcPduListBuffer_t; // vector of the 8 HARQ processes per UE

typedef std::vector < UlDciListElement_s > UlHarqProcessesDciBuffer_t;
typedef std::vector < uint8_t > UlHarqProcessesStatus_t;


struct tdtbfqsFlowPerf_t
{
  Time flowStart;                 
  uint64_t packetArrivalRate;     
  uint64_t tokenGenerationRate;   
  uint32_t tokenPoolSize;         
  uint32_t maxTokenPoolSize;      
  int counter;                    
  uint32_t burstCredit;           
  int debtLimit;                  
  uint32_t creditableThreshold;   
};

class TdTbfqFfMacScheduler : public FfMacScheduler
{
public:
  TdTbfqFfMacScheduler ();

  virtual ~TdTbfqFfMacScheduler ();

  // inherited from Object
  virtual void DoDispose (void);
  static TypeId GetTypeId (void);

  // inherited from FfMacScheduler
  virtual void SetFfMacCschedSapUser (FfMacCschedSapUser* s);
  virtual void SetFfMacSchedSapUser (FfMacSchedSapUser* s);
  virtual FfMacCschedSapProvider* GetFfMacCschedSapProvider ();
  virtual FfMacSchedSapProvider* GetFfMacSchedSapProvider ();

  // FFR SAPs
  virtual void SetLteFfrSapProvider (LteFfrSapProvider* s);
  virtual LteFfrSapUser* GetLteFfrSapUser ();

  friend class MemberCschedSapProvider<TdTbfqFfMacScheduler>;
  friend class MemberSchedSapProvider<TdTbfqFfMacScheduler>;

  void TransmissionModeConfigurationUpdate (uint16_t rnti, uint8_t txMode);

private:
  //
  // Implementation of the CSCHED API primitives
  // (See 4.1 for description of the primitives)
  //

  void DoCschedCellConfigReq (const struct FfMacCschedSapProvider::CschedCellConfigReqParameters& params);

  void DoCschedUeConfigReq (const struct FfMacCschedSapProvider::CschedUeConfigReqParameters& params);

  void DoCschedLcConfigReq (const struct FfMacCschedSapProvider::CschedLcConfigReqParameters& params);

  void DoCschedLcReleaseReq (const struct FfMacCschedSapProvider::CschedLcReleaseReqParameters& params);

  void DoCschedUeReleaseReq (const struct FfMacCschedSapProvider::CschedUeReleaseReqParameters& params);

  //
  // Implementation of the SCHED API primitives
  // (See 4.2 for description of the primitives)
  //

  void DoSchedDlRlcBufferReq (const struct FfMacSchedSapProvider::SchedDlRlcBufferReqParameters& params);

  void DoSchedDlPagingBufferReq (const struct FfMacSchedSapProvider::SchedDlPagingBufferReqParameters& params);

  void DoSchedDlMacBufferReq (const struct FfMacSchedSapProvider::SchedDlMacBufferReqParameters& params);

  void DoSchedDlTriggerReq (const struct FfMacSchedSapProvider::SchedDlTriggerReqParameters& params);

  void DoSchedDlRachInfoReq (const struct FfMacSchedSapProvider::SchedDlRachInfoReqParameters& params);

  void DoSchedDlCqiInfoReq (const struct FfMacSchedSapProvider::SchedDlCqiInfoReqParameters& params);

  void DoSchedUlTriggerReq (const struct FfMacSchedSapProvider::SchedUlTriggerReqParameters& params);

  void DoSchedUlNoiseInterferenceReq (const struct FfMacSchedSapProvider::SchedUlNoiseInterferenceReqParameters& params);

  void DoSchedUlSrInfoReq (const struct FfMacSchedSapProvider::SchedUlSrInfoReqParameters& params);

  void DoSchedUlMacCtrlInfoReq (const struct FfMacSchedSapProvider::SchedUlMacCtrlInfoReqParameters& params);

  void DoSchedUlCqiInfoReq (const struct FfMacSchedSapProvider::SchedUlCqiInfoReqParameters& params);

  int GetRbgSize (int dlbandwidth);

  unsigned int LcActivePerFlow (uint16_t rnti);

  double EstimateUlSinr (uint16_t rnti, uint16_t rb);

  void RefreshDlCqiMaps (void);
  void RefreshUlCqiMaps (void);

  void UpdateDlRlcBufferInfo (uint16_t rnti, uint8_t lcid, uint16_t size);
  void UpdateUlRlcBufferInfo (uint16_t rnti, uint16_t size);

  uint8_t UpdateHarqProcessId (uint16_t rnti);

  uint8_t HarqProcessAvailability (uint16_t rnti);

  void RefreshHarqProcesses ();

  Ptr<LteAmc> m_amc; 

  std::map <LteFlowId_t, FfMacSchedSapProvider::SchedDlRlcBufferReqParameters> m_rlcBufferReq;


  std::map <uint16_t, tdtbfqsFlowPerf_t> m_flowStatsDl;

  std::map <uint16_t, tdtbfqsFlowPerf_t> m_flowStatsUl;


  std::map <uint16_t,uint8_t> m_p10CqiRxed;
  std::map <uint16_t,uint32_t> m_p10CqiTimers;

  std::map <uint16_t,SbMeasResult_s> m_a30CqiRxed;
  std::map <uint16_t,uint32_t> m_a30CqiTimers;

  std::map <uint16_t, std::vector <uint16_t> > m_allocationMaps;

  std::map <uint16_t, std::vector <double> > m_ueCqi;
  std::map <uint16_t, uint32_t> m_ueCqiTimers;

  std::map <uint16_t,uint32_t> m_ceBsrRxed;

  // MAC SAPs
  FfMacCschedSapUser* m_cschedSapUser; 
  FfMacSchedSapUser* m_schedSapUser; 
  FfMacCschedSapProvider* m_cschedSapProvider; 
  FfMacSchedSapProvider* m_schedSapProvider; 

  // FFR SAPs
  LteFfrSapUser* m_ffrSapUser; 
  LteFfrSapProvider* m_ffrSapProvider; 

  // Internal parameters
  FfMacCschedSapProvider::CschedCellConfigReqParameters m_cschedCellConfig; 


  uint16_t m_nextRntiUl; 

  uint32_t m_cqiTimersThreshold; 

  std::map <uint16_t,uint8_t> m_uesTxMode; 

  uint64_t bankSize;  

  int m_debtLimit;  

  uint32_t m_creditLimit;  

  uint32_t m_tokenPoolSize; 

  uint32_t m_creditableThreshold;  

  // HARQ attributes
  bool m_harqOn;
  std::map <uint16_t, uint8_t> m_dlHarqCurrentProcessId; 
  //HARQ status
  // 0: process Id available
  // x>0: process Id equal to `x` transmission count
  std::map <uint16_t, DlHarqProcessesStatus_t> m_dlHarqProcessesStatus; 
  std::map <uint16_t, DlHarqProcessesTimer_t> m_dlHarqProcessesTimer; 
  std::map <uint16_t, DlHarqProcessesDciBuffer_t> m_dlHarqProcessesDciBuffer; 
  std::map <uint16_t, DlHarqRlcPduListBuffer_t> m_dlHarqProcessesRlcPduListBuffer; 
  std::vector <DlInfoListElement_s> m_dlInfoListBuffered; 

  std::map <uint16_t, uint8_t> m_ulHarqCurrentProcessId; 
  //HARQ status
  // 0: process Id available
  // x>0: process Id equal to `x` transmission count
  std::map <uint16_t, UlHarqProcessesStatus_t> m_ulHarqProcessesStatus; 
  std::map <uint16_t, UlHarqProcessesDciBuffer_t> m_ulHarqProcessesDciBuffer; 


  // RACH attributes
  std::vector <struct RachListElement_s> m_rachList; 
  std::vector <uint16_t> m_rachAllocationMap; 
  uint8_t m_ulGrantMcs; 
};

} // namespace ns3

#endif /* TDTBFQ_FF_MAC_SCHEDULER_H */