bs-uplink-scheduler-mbqos.h

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2009 INRIA/LRC - Computer Networks Laboratory
 *
 * 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
 *
 * Authors: Jahanzeb Farooq <jahanzeb.farooq@sophia.inria.fr>
 *          Flavio Kobuta <flaviokubota@gmail.com>
 *
 */

#ifndef UPLINK_SCHEDULER_MBQOS_H
#define UPLINK_SCHEDULER_MBQOS_H

#include <stdint.h>
#include "ul-mac-messages.h"
#include "ns3/nstime.h"
#include "wimax-phy.h"
#include "ul-job.h"
#include "service-flow-record.h"
#include "ns3/object.h"
#include "bs-uplink-scheduler.h"
#include "service-flow.h"

namespace ns3 {

class BaseStationNetDevice;
class SSRecord;
class ServiceFlow;
class ServiceFlowRecord;
class UlJob;

class UplinkSchedulerMBQoS : public UplinkScheduler
{
public:
  UplinkSchedulerMBQoS ();
  UplinkSchedulerMBQoS (Time time);
  ~UplinkSchedulerMBQoS (void);

  static TypeId GetTypeId (void);

  std::list<OfdmUlMapIe> GetUplinkAllocations (void) const;

  void GetChannelDescriptorsToUpdate (bool &updateDcd, bool &updateUcd, bool &sendDcd, bool &sendUcd);
  uint32_t CalculateAllocationStartTime (void);
  void AddUplinkAllocation (OfdmUlMapIe &ulMapIe,
                            const uint32_t &allocationSize,
                            uint32_t &symbolsToAllocation,
                            uint32_t &availableSymbols);

  void Schedule (void);
  void ServiceUnsolicitedGrants (const SSRecord *ssRecord,
                                 enum ServiceFlow::SchedulingType schedulingType,
                                 OfdmUlMapIe &ulMapIe,
                                 const WimaxPhy::ModulationType modulationType,
                                 uint32_t &symbolsToAllocation,
                                 uint32_t &availableSymbols);
  void ServiceBandwidthRequests (const SSRecord *ssRecord,
                                 enum ServiceFlow::SchedulingType schedulingType,
                                 OfdmUlMapIe &ulMapIe,
                                 const WimaxPhy::ModulationType modulationType,
                                 uint32_t &symbolsToAllocation,
                                 uint32_t &availableSymbols);
  bool ServiceBandwidthRequests (ServiceFlow *serviceFlow,
                                 enum ServiceFlow::SchedulingType schedulingType,
                                 OfdmUlMapIe &ulMapIe,
                                 const WimaxPhy::ModulationType modulationType,
                                 uint32_t &symbolsToAllocation,
                                 uint32_t &availableSymbols);
  void AllocateInitialRangingInterval (uint32_t &symbolsToAllocation, uint32_t &availableSymbols);
  void SetupServiceFlow (SSRecord *ssRecord, ServiceFlow *serviceFlow);

  void CheckDeadline (uint32_t &availableSymbols);

  void CheckMinimumBandwidth (uint32_t &availableSymbols);

  void UplinkSchedWindowTimer (void);

  void EnqueueJob (UlJob::JobPriority priority, Ptr<UlJob> job);

  Ptr<UlJob> DequeueJob (UlJob::JobPriority priority);

  void ProcessBandwidthRequest (const BandwidthRequestHeader &bwRequestHdr);

  Time DetermineDeadline (ServiceFlow *serviceFlow);

  void InitOnce (void);

  uint32_t CountSymbolsQueue (std::list<Ptr<UlJob> > jobs);

  uint32_t CountSymbolsJobs (Ptr<UlJob> job);

  void OnSetRequestedBandwidth (ServiceFlowRecord *sfr);

  Ptr<UlJob>
  CreateUlJob (SSRecord *ssRecord, enum ServiceFlow::SchedulingType schedType, ReqType reqType);

  uint32_t
  GetPendingSize (ServiceFlow* serviceFlow);

  bool
  ServiceBandwidthRequestsBytes (ServiceFlow *serviceFlow,
                                 enum ServiceFlow::SchedulingType schedulingType, OfdmUlMapIe &ulMapIe,
                                 const WimaxPhy::ModulationType modulationType,
                                 uint32_t &symbolsToAllocation, uint32_t &availableSymbols, uint32_t allocationSizeBytes);

private:
  std::list<OfdmUlMapIe> m_uplinkAllocations; 

  // queues for scheduler
  std::list<Ptr<UlJob> > m_uplinkJobs_high; 
  std::list<Ptr<UlJob> > m_uplinkJobs_inter; 
  std::list<Ptr<UlJob> > m_uplinkJobs_low; 

  // interval to reset window
  Time m_windowInterval; 
};

} // namespace ns3

#endif /* UPLINK_SCHEDULER_MBQOS_H */