void
DownlinkPacketScheduler::UpdateAverageTransmissionRate (void)
{
  RrcEntity *rrc = GetMacEntity ()->GetDevice ()->GetProtocolStack ()->GetRrcEntity ();
  RrcEntity::RadioBearersContainer* bearers = rrc->GetRadioBearerContainer ();

  for (std::vector<RadioBearer* >::iterator it = bearers->begin (); it != bearers->end (); it++)
    {
      RadioBearer *bearer = (*it);
      bearer->UpdateAverageTransmissionRate ();
    }
}
void DownlinkPacketScheduler::SelectFlowsToSchedule ()
{
#ifdef SCHEDULER_DEBUG
	std::cout << "\t Select Flows to schedule" << std::endl;
#endif

  ClearFlowsToSchedule ();

  RrcEntity *rrc = GetMacEntity ()->GetDevice ()->GetProtocolStack ()->GetRrcEntity ();
  RrcEntity::RadioBearersContainer* bearers = rrc->GetRadioBearerContainer ();


  for (std::vector<RadioBearer* >::iterator it = bearers->begin (); it != bearers->end (); it++)
	{
	  //SELECT FLOWS TO SCHEDULE
	  RadioBearer *bearer = (*it);
	  if (bearer->HasPackets () && bearer->GetDestination ()->GetNodeState () == NetworkNode::STATE_ACTIVE)
		{
		  //compute data to transmit
		  int dataToTransmit;
		  if (bearer->GetApplication ()->GetApplicationType () == Application::APPLICATION_TYPE_INFINITE_BUFFER)
			{
			  dataToTransmit = 100000000;
			}
		  else
			{
			  dataToTransmit = bearer->GetQueueSize ();
			}

		  //compute spectral efficiency
		  ENodeB *enb = (ENodeB*) GetMacEntity ()->GetDevice ();
		  ENodeB::UserEquipmentRecord *ueRecord = enb->GetUserEquipmentRecord (bearer->GetDestination ()->GetIDNetworkNode ());
		  std::vector<double> spectralEfficiency;
		  std::vector<int> cqiFeedbacks = ueRecord->GetCQI ();
		  int numberOfCqi = cqiFeedbacks.size ();
		  for (int i = 0; i < numberOfCqi; i++)
			{
			  double sEff = GetMacEntity ()->GetAmcModule ()->GetEfficiencyFromCQI (cqiFeedbacks.at (i));
			  spectralEfficiency.push_back (sEff);
			}

		  //create flow to scheduler record
		  InsertFlowToSchedule(bearer, dataToTransmit, spectralEfficiency, cqiFeedbacks);
		}
	  else
	    {}
	}
}
예제 #3
0
void
PacketScheduler::CheckForDLDropPackets ()
{
  RrcEntity *rrc = GetMacEntity ()->GetDevice ()->GetProtocolStack ()->GetRrcEntity ();
  RrcEntity::RadioBearersContainer* bearers = rrc->GetRadioBearerContainer ();

  for (std::vector<RadioBearer* >::iterator it = bearers->begin (); it != bearers->end (); it++)
    {
	  //delete packets from queue
	  (*it)->GetMacQueue ()->CheckForDropPackets (
			  (*it)->GetQoSParameters ()->GetMaxDelay (), (*it)->GetApplication ()->GetApplicationID ());

	  //delete fragment waiting in AM RLC entity
	  if ((*it)->GetRlcEntity()->GetRlcModel() == RlcEntity::AM_RLC_MODE)
	    {
		  AmRlcEntity* amRlc = (AmRlcEntity*) (*it)->GetRlcEntity();
		  amRlc->CheckForDropPackets (
				  (*it)->GetQoSParameters ()->GetMaxDelay (), (*it)->GetApplication ()->GetApplicationID ());
	    }
    }
}