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
{}
}
}
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 ());
}
}
}