ENodeB*
NetworkManager::CreateEnodeb (int id,
Cell* cell,
double pos_X, double pos_Y,
LteChannel *dlCh, LteChannel *ulCh,
BandwidthManager *bm)
{
ENodeB* enb = new ENodeB (id, cell, pos_X, pos_Y); //ENodeB (1, cell);
enb->GetPhy ()->SetDlChannel (dlCh);
enb->GetPhy ()->SetUlChannel (ulCh);
enb->GetPhy ()->SetBandwidthManager (bm);
ulCh->AddDevice (enb);
GetENodeBContainer ()->push_back (enb);
return enb;
}
bool
PowerBasedHoManager::CheckHandoverNeed (UserEquipment* ue)
{
/*//test RX cqi success?
std::cout<<"PBHM: UE "<<ue->GetIDNetworkNode();
ENodeB *testenb=nm->GetENodeBByID(ue->GetTargetNode()->GetIDNetworkNode());
std::vector<int> testtemp=testenb->GetUserEquipmentRecord(ue->GetIDNetworkNode())->GetCQI();
int testj=0;
for(std::vector<int>::iterator testit=testtemp.begin();testit!=testtemp.end();testit++,testj++){
std::cout<<"cqi="<<testtemp.at(testj)<<std::endl;
}*/
return false;
//std::cout<<"power based ho"<<std::endl;//test
/*
NetworkNode *targetNode = ue->GetTargetNode ();
double TXpower = 10 * log10 (
pow (10., (targetNode->GetPhy()->GetTxPower() - 30)/10)
/
targetNode->GetPhy()->GetBandwidthManager()->GetDlSubChannels().size () );
double pathLoss = ComputePathLossForInterference(targetNode, ue);
double targetRXpower = TXpower - pathLoss;
double RXpower;
std::vector<ENodeB*> *listOfNodes = NetworkManager::Init ()->GetENodeBContainer ();
std::vector<ENodeB*>::iterator it;
for (it = listOfNodes->begin (); it != listOfNodes->end (); it++)
{
if ((*it)->GetIDNetworkNode () != targetNode->GetIDNetworkNode () )
{
NetworkNode *probableNewTargetNode = (*it);
TXpower = 10 * log10 (
pow (10., (probableNewTargetNode->GetPhy()->GetTxPower() - 30)/10)
/
probableNewTargetNode->GetPhy()->GetBandwidthManager()->GetDlSubChannels().size () );
pathLoss = ComputePathLossForInterference(probableNewTargetNode, ue);
RXpower = TXpower - pathLoss;
if (RXpower > targetRXpower)
{
if (NetworkManager::Init()->CheckHandoverPermissions(probableNewTargetNode,ue))
{
targetRXpower = RXpower;
targetNode = probableNewTargetNode;
}
}
}
}
std::vector<HeNodeB*> *listOfNodes2 = NetworkManager::Init ()->GetHomeENodeBContainer();
std::vector<HeNodeB*>::iterator it2;
for (it2 = listOfNodes2->begin (); it2 != listOfNodes2->end (); it2++)
{
if ((*it2)->GetIDNetworkNode () != targetNode->GetIDNetworkNode () )
{
NetworkNode *probableNewTargetNode = (*it2);
TXpower = 10 * log10 (
pow (10., (probableNewTargetNode->GetPhy()->GetTxPower() - 30)/10)
/
probableNewTargetNode->GetPhy()->GetBandwidthManager()->GetDlSubChannels().size () );
pathLoss = ComputePathLossForInterference(probableNewTargetNode, ue);
RXpower = TXpower - pathLoss;
if (RXpower > targetRXpower)
{
if (NetworkManager::Init()->CheckHandoverPermissions(probableNewTargetNode,ue))
{
targetRXpower = RXpower;
targetNode = probableNewTargetNode;
}
}
}
}
if (ue->GetTargetNode ()->GetIDNetworkNode () != targetNode->GetIDNetworkNode ())
{
m_target = targetNode;
return true;
}
else
{
return false;
}*/
//mouan
//NetworkNode *targetNode = ue->GetTargetNode ();
NetworkNode *targetNode;
//if(targetNode->GetNodeType()==NetworkNode::TYPE_ENODEB){
std::cout<<"enb vs ue"<<std::endl;//test
ENodeB *targetenb;
int compare[2];
int selected_bus_id=0;
{
std::vector<ENodeB *> *enbs=nm->GetENodeBContainer();
double mindis=9999999.0;
for(std::vector<ENodeB *>::iterator ie=enbs->begin();ie!=enbs->end();ie++){
CartesianCoordinates *dis=(*ie)->GetCell()->GetCellCenterPosition();
double temp=dis->GetDistance(ue->GetMobilityModel()->GetAbsolutePosition());
if(mindis>temp){
mindis=temp;
targetenb=(*ie);
}
}
if(targetenb==NULL){
std::cout<<"ERROR! targetenb==NULL"<<std::endl;
}
else{
targetNode=nm->GetNetworkNodeByID(targetenb->GetIDNetworkNode());
}
//ENodeB *targetenb=nm->GetENodeBByID(targetNode->GetIDNetworkNode());
//std::vector<int> uecqi=targetenb->GetUserEquipmentRecord(ue->GetIDNetworkNode())->GetCQI();
std::vector<double> mouan_bstoueSinr;
std::vector<double> rxSignalValues;
std::vector<double>::iterator it;
rxSignalValues = ue->GetPhy()->GetTxSignal()->Getvalues();
//compute noise + interference
double interference;
if (ue->GetPhy()->GetInterference () != NULL)
{
ENodeB *node;
interference = 0;
std::vector<ENodeB*> *eNBs = NetworkManager::Init ()->GetENodeBContainer ();
std::vector<ENodeB*>::iterator it;
//std::cout << "Compute interference for UE " << ue->GetIDNetworkNode () << " ,target node " << ue->GetTargetNode ()->GetIDNetworkNode ()<< std::endl;
for (it = eNBs->begin (); it != eNBs->end (); it++)
{
node = (*it);
if (node->GetIDNetworkNode () != targetenb->GetIDNetworkNode () &&
node->GetPhy ()->GetBandwidthManager ()->GetUlOffsetBw () ==
ue->GetTargetNode ()->GetPhy ()->GetBandwidthManager ()->GetUlOffsetBw ())
{
double powerTXForSubBandwidth = 10 * log10 (
pow (10., (node->GetPhy()->GetTxPower() - 30)/10)
/
node->GetPhy()->GetBandwidthManager ()->GetUlSubChannels().size ());
double nodeInterference_db = powerTXForSubBandwidth - 10 - ComputePathLossForInterference (node, ue); // in dB
double nodeInterference = pow(10, nodeInterference_db/10);
interference += nodeInterference;
/*
std::cout << "\t add interference from eNB " << node->GetIDNetworkNode ()
<< " " << powerTXForSubBandwidth << " " << ComputePathLossForInterference (node, ue)
<< " " << nodeInterference_db << " " << nodeInterference
<< " --> tot: " << interference
<< std::endl;
*/
}
}
}
else
{
interference = 0;
}
double noise_interference = 10. * log10 (pow(10., -148.95/10) + interference); // dB
for (it = rxSignalValues.begin(); it != rxSignalValues.end(); it++)
{
double power; // power transmission for the current sub channel [dB]
if ((*it) != 0.)
{
power = (*it);
}
else
{
power = 0.;
}
mouan_bstoueSinr.push_back (power - noise_interference);
}
AMCModule *amc = ue->GetProtocolStack ()->GetMacEntity ()->GetAmcModule ();
std::vector<int> uecqi = amc->CreateCqiFeedbacks (mouan_bstoueSinr);
/*std::vector<double> spectralEfficiency;
//std::vector<int> cqiFeedbacks = ueRecord->GetCQI ();
int numberOfCqi = uecqi.size ();
for (int i = 0; i < numberOfCqi; i++)
{
double sEff = GetMacEntity ()->GetAmcModule ()->GetEfficiencyFromCQI (uecqi.at (i));
spectralEfficiency.push_back (sEff);//i didn't do * 180000.0,because just for compare
}*/
//copy start (from enhance-uplink-scheduler.cpp)
UplinkPacketScheduler *ulps=targetenb->GetULScheduler();
UplinkPacketScheduler::UsersToSchedule *users = ulps->GetUsersToSchedule();
UplinkPacketScheduler::UserToSchedule* scheduledUser;
int nbOfRBs = ulps->GetMacEntity()->GetDevice ()->GetPhy ()->GetBandwidthManager ()->GetUlSubChannels ().size ();
int availableRBs; // No of RB's not allocated
int unallocatedUsers; // No of users who remain unallocated
int selectedUser; // user to be selected for allocation
int selectedPRB; // PRB to be selected for allocation
double bestMetric; // best metric to identify user/RB combination
int left, right; // index of left and left PRB's to check
if(nbOfRBs>1000||users->size()>1000){
std::cout<<"ERROR! some value wrong."<<std::endl;
return false;
}
bool Allocated[nbOfRBs];
bool allocationMade;
double metrics[nbOfRBs][users->size ()];
int requiredPRBs[users->size ()];
//std::vector<int> m_mouan;
int m_mouan[users->size()];
int ueat=-1;
//test
int tt=0;
for(UplinkPacketScheduler::UsersToSchedule::iterator test=users->begin();test!=users->end();test++){
tt++;
}
std::cout<<"3:"<<users->size()<<"="<<tt<<std::endl;//test
for(int i=0 ; i < users->size() ; i++){
std::cout<<"A ";//test
m_mouan[i]=0;
}
std::cout<<"3end"<<std::endl;//test
std::cout<<"4"<<std::endl;//test
//Some initialization
availableRBs = nbOfRBs;
unallocatedUsers = users->size ();
for(int i=0; i < nbOfRBs; i++)
Allocated[i] = false;
//create a matrix of flow metrics
for (int i = 0; i < nbOfRBs; i++)
{
for (int j = 0; j < users->size (); j++)
{
//metrics[i][j] = ComputeSchedulingMetric (users->at (j), i);
double spectralEfficiency = ulps->GetMacEntity ()->GetAmcModule ()->GetSinrFromCQI (uecqi.at(i));
metrics[i][j] = spectralEfficiency * 180000;
}
}
std::cout<<"5"<<std::endl;//test
//create number of required PRB's per scheduled users
for(int j=0; j < users->size(); j++)
{
std::cout<<"1 "<<std::endl;//test
scheduledUser = users->at(j);
std::cout<<"2 "<<std::endl;//test
std::vector<double> sinrs;
for(int c=0;c<scheduledUser->m_channelContition.size();c++)
//for (std::vector<int>::iterator c = scheduledUser->m_channelContition.begin ();
// c != scheduledUser->m_channelContition.end (); c++)
{
//cout << *c <<" ";
std::cout<<"a="<<c<<"="<<scheduledUser->m_channelContition.at(c)<<std::endl;//test
std::cout<<"size="<<scheduledUser->m_channelContition.size()<<std::endl;//test
std::cout<<"id="<<scheduledUser->m_userToSchedule->GetIDNetworkNode()<<std::endl;//test
//if(scheduledUser->m_channelContition.at(c)>14)scheduledUser->m_channelContition.at(c)=14;
//else if(scheduledUser->m_channelContition.at(c)<0)scheduledUser->m_channelContition.at(c)=0;
if(scheduledUser->m_channelContition.at(c)>14||scheduledUser->m_channelContition.at(c)<0){
return false;
}
sinrs.push_back (ulps->GetMacEntity ()->GetAmcModule ()->GetSinrFromCQI (scheduledUser->m_channelContition.at(c)));
std::cout<<"b "<<std::endl;//test
}
std::cout<<"3 "<<std::endl;//test
double effectiveSinr = GetEesmEffectiveSinr (sinrs);
std::cout<<"4 "<<std::endl;//test
int mcs = ulps->GetMacEntity ()->GetAmcModule ()->GetMCSFromCQI (
ulps->GetMacEntity ()->GetAmcModule ()->GetCQIFromSinr (effectiveSinr));
//scheduledUser->m_selectedMCS = mcs;
std::cout<<"5 "<<std::endl;//test
requiredPRBs[j] = (floor) (scheduledUser->m_dataToTransmit /
(ulps->GetMacEntity ()->GetAmcModule ()->GetTBSizeFromMCS (mcs, 1) / 8));
std::cout<<"6end"<<std::endl;//test
}
std::cout<<"6"<<std::endl;//test
//RBs allocation
while(availableRBs > 0 && unallocatedUsers > 0) //
{
// First step: find the best user-RB combo
selectedPRB = -1;
selectedUser = -1;
bestMetric = (double) (-(1<<30));
for(int i=0; i < nbOfRBs; i++)
{
if (!Allocated[i]){ // check only unallocated PRB's
for(int j=0; j < users->size (); j++)
{
if ( users->at (j)->m_listOfAllocatedRBs.size() == 0
&& requiredPRBs[j] > 0) //only unallocated users requesting some RB's
if (bestMetric < metrics[i][j]){
selectedPRB = i;
selectedUser = j;
bestMetric = metrics[i][j];
}
}
}
}
// Now start allocating for the selected user at the selected PRB the required blocks
// using how many PRB's are needed for the user
if (selectedUser != -1)
{
scheduledUser = users->at(selectedUser);
//scheduledUser->m_listOfAllocatedRBs.push_back (selectedPRB);
m_mouan[selectedUser]++;
Allocated[selectedPRB] = true;
left = selectedPRB - 1;
right = selectedPRB + 1;
availableRBs--;
unallocatedUsers--;
allocationMade = true;
for(int i = 1; i < requiredPRBs[selectedUser] && availableRBs > 0 && allocationMade; i++ )
{ // search right and left of initial allocation
allocationMade = false;
if (left >=0 && Allocated[left] && right < nbOfRBs && Allocated[right])
break; // nothing is available, since we need to have contiguous allocation
if ( (right < nbOfRBs) && (! Allocated[right]) &&
(
((left >=0) &&
(metrics[right][selectedUser] >= metrics[left][selectedUser])) // right is better than left
|| (left < 0) || Allocated[left]// OR no more left
)
)
{
//Allocate PRB at right to the user
Allocated[right] = true;
//scheduledUser->m_listOfAllocatedRBs.push_back (right);
m_mouan[selectedUser]++;
right++;
allocationMade = true;
availableRBs--;
} else if ( (left >=0) && (! Allocated[left]) &&
(
((right < nbOfRBs) &&
(metrics[left][selectedUser] > metrics[right][selectedUser])) //left better than right
|| (right >= nbOfRBs) || Allocated[right]// OR no more right
)
)
{
//Allocate PRB at left to the user
Allocated[left] = true;
//scheduledUser->m_listOfAllocatedRBs.push_back (left);
m_mouan[selectedUser]++;
left--;
allocationMade = true;
availableRBs--;
}
} // end of for
if(scheduledUser->m_userToSchedule->GetIDNetworkNode()==ue->GetIDNetworkNode()){
ueat=selectedUser;
printf("selected user %d is ueat\n",ueat);//test
}
} else { // nothing to do exit the allocation loop
break;
}
} //while
std::cout<<"7"<<std::endl;//test
//copy end
if(ueat==-1)return false;//temp
compare[1]=m_mouan[ueat];//m_mouan[ueat];//bs vs ue result
}
std::cout<<"enb vs ue end"<<std::endl;//test
//bus route
std::vector<Bus *> *buses=nm->GetBusContainer();
std::vector<Bus *>::iterator select_bus;
for(select_bus=buses->begin();select_bus != buses->end();select_bus++)
{
Bus *selectedbus=(*select_bus);
std::vector<double> mouan_bustoueSinr;
std::vector<double> rxSignalValues;
std::vector<double>::iterator it;
rxSignalValues = ue->GetPhy()->GetTxSignal()->Getvalues();
//compute noise + interference
double interference;
if (ue->GetPhy()->GetInterference () != NULL)
{
ENodeB *node;
interference = 0;
std::vector<ENodeB*> *eNBs = NetworkManager::Init ()->GetENodeBContainer ();
std::vector<ENodeB*>::iterator it;
//std::cout << "Compute interference for UE " << ue->GetIDNetworkNode () << " ,target node " << ue->GetTargetNode ()->GetIDNetworkNode ()<< std::endl;
for (it = eNBs->begin (); it != eNBs->end (); it++)
{
node = (*it);
if (//node->GetIDNetworkNode () != ue->GetTargetNode ()->GetIDNetworkNode () &&
node->GetPhy ()->GetBandwidthManager ()->GetUlOffsetBw () ==
ue->GetTargetNode ()->GetPhy ()->GetBandwidthManager ()->GetUlOffsetBw ())
{
double powerTXForSubBandwidth = 10 * log10 (
pow (10., (node->GetPhy()->GetTxPower() - 30)/10)
/
node->GetPhy()->GetBandwidthManager ()->GetUlSubChannels().size ());
double nodeInterference_db = powerTXForSubBandwidth - 10 - ComputePathLossForInterference (node, ue); // in dB
double nodeInterference = pow(10, nodeInterference_db/10);
interference += nodeInterference;
/*
std::cout << "\t add interference from eNB " << node->GetIDNetworkNode ()
<< " " << powerTXForSubBandwidth << " " << ComputePathLossForInterference (node, ue)
<< " " << nodeInterference_db << " " << nodeInterference
<< " --> tot: " << interference
<< std::endl;
*/
}
}
}
else
{
interference = 0;
}
double noise_interference = 10. * log10 (pow(10., -148.95/10) + interference); // dB
for (it = rxSignalValues.begin(); it != rxSignalValues.end(); it++)
{
double power; // power transmission for the current sub channel [dB]
if ((*it) != 0.)
{
power = (*it);
}
else
{
power = 0.;
}
mouan_bustoueSinr.push_back (power - noise_interference);
}
AMCModule *amc = ue->GetProtocolStack ()->GetMacEntity ()->GetAmcModule ();
std::vector<int> mouan_bustouecqi = amc->CreateCqiFeedbacks (mouan_bustoueSinr);
//run the bus scheduler
UplinkPacketScheduler *ulps=selectedbus->GetULScheduler();
UplinkPacketScheduler::UsersToSchedule *users = ulps->GetUsersToSchedule();
UplinkPacketScheduler::UserToSchedule* scheduledUser;
int nbOfRBs = ulps->GetMacEntity()->GetDevice ()->GetPhy ()->GetBandwidthManager ()->GetUlSubChannels ().size ();
int availableRBs; // No of RB's not allocated
int unallocatedUsers; // No of users who remain unallocated
int selectedUser; // user to be selected for allocation
int selectedPRB; // PRB to be selected for allocation
double bestMetric; // best metric to identify user/RB combination
int left, right; // index of left and left PRB's to check
bool Allocated[nbOfRBs];
bool allocationMade;
double metrics[nbOfRBs][users->size ()];
int requiredPRBs[users->size ()];
//std::vector<int> m_mouan;
int m_mouan[users->size()];
int ueat;
for(int i=0;i<users->size();i++)m_mouan[i]=0;
//Some initialization
availableRBs = nbOfRBs;
unallocatedUsers = users->size ();
for(int i=0; i < nbOfRBs; i++)
Allocated[i] = false;
//create a matrix of flow metrics
for (int i = 0; i < nbOfRBs; i++)
{
for (int j = 0; j < users->size (); j++)
{
//metrics[i][j] = ComputeSchedulingMetric (users->at (j), i);
double spectralEfficiency = ulps->GetMacEntity ()->GetAmcModule ()->GetSinrFromCQI (mouan_bustouecqi.at(i));
metrics[i][j] = spectralEfficiency * 180000;
}
}
//create number of required PRB's per scheduled users
for(int j=0; j < users->size(); j++)
{
scheduledUser = users->at(j);
std::vector<double> sinrs;
for (std::vector<int>::iterator c = scheduledUser->m_channelContition.begin ();
c != scheduledUser->m_channelContition.end (); c++)
{
//cout << *c <<" ";
sinrs.push_back (ulps->GetMacEntity ()->GetAmcModule ()->GetSinrFromCQI (*c));
}
double effectiveSinr = GetEesmEffectiveSinr (sinrs);
int mcs = ulps->GetMacEntity ()->GetAmcModule ()->GetMCSFromCQI (
ulps->GetMacEntity ()->GetAmcModule ()->GetCQIFromSinr (effectiveSinr));
//scheduledUser->m_selectedMCS = mcs;
requiredPRBs[j] = (floor) (scheduledUser->m_dataToTransmit /
(ulps->GetMacEntity ()->GetAmcModule ()->GetTBSizeFromMCS (mcs, 1) / 8));
}
//RBs allocation
while(availableRBs > 0 && unallocatedUsers > 0) //
{
// First step: find the best user-RB combo
selectedPRB = -1;
selectedUser = -1;
bestMetric = (double) (-(1<<30));
for(int i=0; i < nbOfRBs; i++)
{
if (!Allocated[i]){ // check only unallocated PRB's
for(int j=0; j < users->size (); j++)
{
if ( users->at (j)->m_listOfAllocatedRBs.size() == 0
&& requiredPRBs[j] > 0) //only unallocated users requesting some RB's
if (bestMetric < metrics[i][j]){
selectedPRB = i;
selectedUser = j;
bestMetric = metrics[i][j];
}
}
}
}
// Now start allocating for the selected user at the selected PRB the required blocks
// using how many PRB's are needed for the user
if (selectedUser != -1)
{
scheduledUser = users->at(selectedUser);
//scheduledUser->m_listOfAllocatedRBs.push_back (selectedPRB);
m_mouan[selectedUser]++;
Allocated[selectedPRB] = true;
left = selectedPRB - 1;
right = selectedPRB + 1;
availableRBs--;
unallocatedUsers--;
allocationMade = true;
for(int i = 1; i < requiredPRBs[selectedUser] && availableRBs > 0 && allocationMade; i++ )
{ // search right and left of initial allocation
allocationMade = false;
if (left >=0 && Allocated[left] && right < nbOfRBs && Allocated[right])
break; // nothing is available, since we need to have contiguous allocation
if ( (right < nbOfRBs) && (! Allocated[right]) &&
(
((left >=0) &&
(metrics[right][selectedUser] >= metrics[left][selectedUser])) // right is better than left
|| (left < 0) || Allocated[left]// OR no more left
)
)
{
//Allocate PRB at right to the user
Allocated[right] = true;
//scheduledUser->m_listOfAllocatedRBs.push_back (right);
m_mouan[selectedUser]++;
right++;
allocationMade = true;
availableRBs--;
} else if ( (left >=0) && (! Allocated[left]) &&
(
((right < nbOfRBs) &&
(metrics[left][selectedUser] > metrics[right][selectedUser])) //left better than right
|| (right >= nbOfRBs) || Allocated[right]// OR no more right
)
)
{
//Allocate PRB at left to the user
Allocated[left] = true;
//scheduledUser->m_listOfAllocatedRBs.push_back (left);
m_mouan[selectedUser]++;
left--;
allocationMade = true;
availableRBs--;
}
} // end of for
if(scheduledUser->m_userToSchedule->GetIDNetworkNode()==ue->GetIDNetworkNode()){
ueat=selectedUser;
printf("selected user %d is ueat\n",ueat);//test
}
} else { // nothing to do exit the allocation loop
break;
}
}//end while
if(m_mouan[ueat]>compare[0]){
compare[0]=m_mouan[ueat];//bus vs ue
selected_bus_id=selectedbus->GetIDNetworkNode();
}
}//end for
std::cout<<"bus vs ue end"<<std::endl;//test
//bus vs bs
{
//ENodeB *targetenb=nm->GetENodeBByID(targetNode->GetIDNetworkNode());
std::vector<int> buscqi=targetenb->GetUserEquipmentRecord(selected_bus_id)->GetCQI();
/*std::vector<double> spectralEfficiency;
//std::vector<int> cqiFeedbacks = ueRecord->GetCQI ();
int numberOfCqi = uecqi.size ();
for (int i = 0; i < numberOfCqi; i++)
{
double sEff = GetMacEntity ()->GetAmcModule ()->GetEfficiencyFromCQI (uecqi.at (i));
spectralEfficiency.push_back (sEff);//i didn't do * 180000.0,because just for compare
}*/
//copy start (from enhance-uplink-scheduler.cpp)
UplinkPacketScheduler *ulps=targetenb->GetULScheduler();
UplinkPacketScheduler::UsersToSchedule *users = ulps->GetUsersToSchedule();
UplinkPacketScheduler::UserToSchedule* scheduledUser;
int nbOfRBs = ulps->GetMacEntity()->GetDevice ()->GetPhy ()->GetBandwidthManager ()->GetUlSubChannels ().size ();
int availableRBs; // No of RB's not allocated
int unallocatedUsers; // No of users who remain unallocated
int selectedUser; // user to be selected for allocation
int selectedPRB; // PRB to be selected for allocation
double bestMetric; // best metric to identify user/RB combination
int left, right; // index of left and left PRB's to check
bool Allocated[nbOfRBs];
bool allocationMade;
double metrics[nbOfRBs][users->size ()];
int requiredPRBs[users->size ()];
//std::vector<int> m_mouan;
int m_mouan[users->size()];
int busat;
for(int i=0;i<users->size();i++)m_mouan[i]=0;
//Some initialization
availableRBs = nbOfRBs;
unallocatedUsers = users->size ();
for(int i=0; i < nbOfRBs; i++)
Allocated[i] = false;
//create a matrix of flow metrics
for (int i = 0; i < nbOfRBs; i++)
{
for (int j = 0; j < users->size (); j++)
{
//metrics[i][j] = ComputeSchedulingMetric (users->at (j), i);
double spectralEfficiency = ulps->GetMacEntity ()->GetAmcModule ()->GetSinrFromCQI (buscqi.at(i));
metrics[i][j] = spectralEfficiency * 180000;
}
}
//create number of required PRB's per scheduled users
for(int j=0; j < users->size(); j++)
{
scheduledUser = users->at(j);
std::vector<double> sinrs;
for (std::vector<int>::iterator c = scheduledUser->m_channelContition.begin ();
c != scheduledUser->m_channelContition.end (); c++)
{
//cout << *c <<" ";
sinrs.push_back (ulps->GetMacEntity ()->GetAmcModule ()->GetSinrFromCQI (*c));
}
double effectiveSinr = GetEesmEffectiveSinr (sinrs);
int mcs = ulps->GetMacEntity ()->GetAmcModule ()->GetMCSFromCQI (
ulps->GetMacEntity ()->GetAmcModule ()->GetCQIFromSinr (effectiveSinr));
//scheduledUser->m_selectedMCS = mcs;
requiredPRBs[j] = (floor) (scheduledUser->m_dataToTransmit /
(ulps->GetMacEntity ()->GetAmcModule ()->GetTBSizeFromMCS (mcs, 1) / 8));
}
//RBs allocation
while(availableRBs > 0 && unallocatedUsers > 0) //
{
// First step: find the best user-RB combo
selectedPRB = -1;
selectedUser = -1;
bestMetric = (double) (-(1<<30));
for(int i=0; i < nbOfRBs; i++)
{
if (!Allocated[i]){ // check only unallocated PRB's
for(int j=0; j < users->size (); j++)
{
if ( users->at (j)->m_listOfAllocatedRBs.size() == 0
&& requiredPRBs[j] > 0) //only unallocated users requesting some RB's
if (bestMetric < metrics[i][j]){
selectedPRB = i;
selectedUser = j;
bestMetric = metrics[i][j];
}
}
}
}
// Now start allocating for the selected user at the selected PRB the required blocks
// using how many PRB's are needed for the user
if (selectedUser != -1)
{
scheduledUser = users->at(selectedUser);
//scheduledUser->m_listOfAllocatedRBs.push_back (selectedPRB);
m_mouan[selectedUser]++;
Allocated[selectedPRB] = true;
left = selectedPRB - 1;
right = selectedPRB + 1;
availableRBs--;
unallocatedUsers--;
allocationMade = true;
for(int i = 1; i < requiredPRBs[selectedUser] && availableRBs > 0 && allocationMade; i++ )
{ // search right and left of initial allocation
allocationMade = false;
if (left >=0 && Allocated[left] && right < nbOfRBs && Allocated[right])
break; // nothing is available, since we need to have contiguous allocation
if ( (right < nbOfRBs) && (! Allocated[right]) &&
(
((left >=0) &&
(metrics[right][selectedUser] >= metrics[left][selectedUser])) // right is better than left
|| (left < 0) || Allocated[left]// OR no more left
)
)
{
//Allocate PRB at right to the user
Allocated[right] = true;
//scheduledUser->m_listOfAllocatedRBs.push_back (right);
m_mouan[selectedUser]++;
right++;
allocationMade = true;
availableRBs--;
} else if ( (left >=0) && (! Allocated[left]) &&
(
((right < nbOfRBs) &&
(metrics[left][selectedUser] > metrics[right][selectedUser])) //left better than right
|| (right >= nbOfRBs) || Allocated[right]// OR no more right
)
)
{
//Allocate PRB at left to the user
Allocated[left] = true;
//scheduledUser->m_listOfAllocatedRBs.push_back (left);
m_mouan[selectedUser]++;
left--;
allocationMade = true;
availableRBs--;
}
} // end of for
if(scheduledUser->m_userToSchedule->GetIDNetworkNode()==selected_bus_id){
busat=selectedUser;
printf("selected bus %d is busat\n",busat);//test
}
} else { // nothing to do exit the allocation loop
break;
}
} //while
//copy end
if(compare[0]>m_mouan[busat]){
compare[0]=m_mouan[busat];
}
//compare[1]=m_mouan[ueat];//m_mouan[ueat];//bs vs ue result
}
if(compare[0]>compare[1]){//using bs
if(ue->GetTargetNode()->GetIDNetworkNode()==targetenb->GetIDNetworkNode()){
return false;
}
else{
m_target=nm->GetNetworkNodeByID(targetenb->GetIDNetworkNode());
//std::cout<<"HO TRUE"<<std::endl;//test
NetworkNode* newTagertNode = m_target;
#ifdef HANDOVER_DEBUG
std::cout << "** HO ** \t time: " << time << " user " << ue->GetIDNetworkNode () <<
" old eNB " << targetNode->GetIDNetworkNode () <<
" new eNB " << newTagertNode->GetIDNetworkNode () << std::endl;
#endif
double time=0;
nm->HandoverProcedure(time, ue, targetNode, newTagertNode);
return true;
}
}
else{//using bus
if(ue->GetTargetNode()->GetIDNetworkNode()==selected_bus_id){
return false;
}
else{
m_target=nm->GetNetworkNodeByID(selected_bus_id);
//std::cout<<"HO TRUE"<<std::endl;//test
NetworkNode* newTagertNode = m_target;
#ifdef HANDOVER_DEBUG
std::cout << "** HO ** \t time: " << time << " user " << ue->GetIDNetworkNode () <<
" old eNB " << targetNode->GetIDNetworkNode () <<
" new eNB " << newTagertNode->GetIDNetworkNode () << std::endl;
#endif
double time=0;
nm->HandoverProcedure(time, ue, targetNode, newTagertNode);
return true;
}
}
//std::cout<<"enb vs bus end"<<std::endl;//test
/*}
else{//default bus route
;
}
double TXpower = 10 * log10 (
pow (10., (targetNode->GetPhy()->GetTxPower() - 30)/10)
/
targetNode->GetPhy()->GetBandwidthManager()->GetDlSubChannels().size () );
double pathLoss = ComputePathLossForInterference(targetNode, ue);
double targetRXpower = TXpower - pathLoss;
double RXpower;
std::vector<ENodeB*> *listOfNodes = NetworkManager::Init ()->GetENodeBContainer ();
std::vector<ENodeB*>::iterator it;
for (it = listOfNodes->begin (); it != listOfNodes->end (); it++)
{
if ((*it)->GetIDNetworkNode () != targetNode->GetIDNetworkNode () )
{
NetworkNode *probableNewTargetNode = (*it);
TXpower = 10 * log10 (
pow (10., (probableNewTargetNode->GetPhy()->GetTxPower() - 30)/10)
/
probableNewTargetNode->GetPhy()->GetBandwidthManager()->GetDlSubChannels().size () );
pathLoss = ComputePathLossForInterference(probableNewTargetNode, ue);
RXpower = TXpower - pathLoss;
if (RXpower > targetRXpower)
{
if (NetworkManager::Init()->CheckHandoverPermissions(probableNewTargetNode,ue))
{
targetRXpower = RXpower;
targetNode = probableNewTargetNode;
}
}
}
}
std::vector<HeNodeB*> *listOfNodes2 = NetworkManager::Init ()->GetHomeENodeBContainer();
std::vector<HeNodeB*>::iterator it2;
for (it2 = listOfNodes2->begin (); it2 != listOfNodes2->end (); it2++)
{
if ((*it2)->GetIDNetworkNode () != targetNode->GetIDNetworkNode () )
{
NetworkNode *probableNewTargetNode = (*it2);
TXpower = 10 * log10 (
pow (10., (probableNewTargetNode->GetPhy()->GetTxPower() - 30)/10)
/
probableNewTargetNode->GetPhy()->GetBandwidthManager()->GetDlSubChannels().size () );
pathLoss = ComputePathLossForInterference(probableNewTargetNode, ue);
RXpower = TXpower - pathLoss;
if (RXpower > targetRXpower)
{
if (NetworkManager::Init()->CheckHandoverPermissions(probableNewTargetNode,ue))
{
targetRXpower = RXpower;
targetNode = probableNewTargetNode;
}
}
}
}
if (ue->GetTargetNode ()->GetIDNetworkNode () != targetNode->GetIDNetworkNode ())
{
m_target = targetNode;
return true;
}
else
{
return false;
}*/
}
void
NetworkManager::TransferBearerInfo (UserEquipment* ue, NetworkNode* target)
{
#ifdef HANDOVER_DEBUG
std::cout << "** HO ** \t TransferBearerInfo for user "
<< ue->GetIDNetworkNode () << std::endl;
#endif
if ( (target->GetNodeType() == NetworkNode::TYPE_ENODEB && ue->GetTargetNode ()->GetNodeType() == NetworkNode::TYPE_ENODEB) ||
(target->GetNodeType() == NetworkNode::TYPE_HOME_BASE_STATION && ue->GetTargetNode ()->GetNodeType() == NetworkNode::TYPE_ENODEB) ||
(target->GetNodeType() == NetworkNode::TYPE_ENODEB && ue->GetTargetNode ()->GetNodeType() == NetworkNode::TYPE_HOME_BASE_STATION))
{
ENodeB *oldTargetNode = (ENodeB*) ue->GetTargetNode ();
ENodeB *newTargetNode = (ENodeB*) target;
// 1 - update spectrum, channels and propagation loss model
#ifdef HANDOVER_DEBUG
std::cout << "update spectrum, channels and propagation loss model"<< std::endl;
#endif
ue->GetPhy ()->SetBandwidthManager (newTargetNode->GetPhy ()->GetBandwidthManager ());
LteChannel *oldDl = oldTargetNode->GetPhy ()->GetDlChannel ();
LteChannel *oldUl = oldTargetNode->GetPhy ()->GetUlChannel ();
LteChannel *newDl = newTargetNode->GetPhy ()->GetDlChannel ();
LteChannel *newUl = newTargetNode->GetPhy ()->GetUlChannel ();
ue->GetPhy ()->SetDlChannel (newDl);
if (oldDl->IsAttached (ue))
{
newDl->AddDevice (ue);
oldDl->DelDevice (ue);
}
if (newDl->GetPropagationLossModel () != NULL)
{
newDl->GetPropagationLossModel ()->
AddChannelRealization (CreateChannelRealization (newTargetNode, ue));
oldDl->GetPropagationLossModel ()->DelChannelRealization (oldTargetNode,ue);
}
ue->GetPhy ()->SetUlChannel (newUl);
if (oldUl->IsAttached (ue))
{
newUl->AddDevice (ue);
oldUl->DelDevice (ue);
}
if (newUl->GetPropagationLossModel () != NULL)
{
newUl->GetPropagationLossModel ()->AddChannelRealization (
CreateChannelRealization (ue, newTargetNode));
oldUl->GetPropagationLossModel ()->DelChannelRealization (ue,oldTargetNode);;
}
// 2 - add ue record to the new Enb
#ifdef HANDOVER_DEBUG
std::cout << "add ue record to the new Enb"<< std::endl;
#endif
newTargetNode->RegisterUserEquipment (ue);
// 3 - delete ue record form the old enb
#ifdef HANDOVER_DEBUG
std::cout << "delete ue record form the old enb"<< std::endl;
#endif
oldTargetNode->DeleteUserEquipment (ue);
// 4 - update cell and new target enb for the ue
#ifdef HANDOVER_DEBUG
std::cout << "update cell and new target enb for the ue"<< std::endl;
#endif
ue->SetTargetNode (newTargetNode);
// MOVE RRC CONTEXT FOR THE OLD TARGET NODE TO THE NEWER ONE
#ifdef HANDOVER_DEBUG
std::cout << "MOVE RRC CONTEXT"<< std::endl;
#endif
RrcEntity * oldEnbRrc = oldTargetNode->GetProtocolStack ()->GetRrcEntity ();
RrcEntity * newEnbRrc = newTargetNode->GetProtocolStack ()->GetRrcEntity ();
RrcEntity * ueRrc = ue->GetProtocolStack ()->GetRrcEntity ();
// --> move dl bearers
#ifdef HANDOVER_DEBUG
std::cout << "\t DL radio bearers " << oldEnbRrc->GetRadioBearerContainer ()->size () << std::endl;
#endif
std::vector<RadioBearer* > *dlBearerToDelete = new std::vector<RadioBearer* > ();
for (std::vector<RadioBearer* >::iterator it = oldEnbRrc->GetRadioBearerContainer ()->begin();
it != oldEnbRrc->GetRadioBearerContainer ()->end (); it++)
{
RadioBearer *bearer = (*it);
if (bearer->GetDestination ()->GetIDNetworkNode () == ue->GetIDNetworkNode ())
{
bearer->SetSource (newTargetNode);
bearer->GetRlcEntity ()->SetDevice (newTargetNode);
newEnbRrc->AddRadioBearer (bearer);
dlBearerToDelete->push_back (bearer);
}
}
for (std::vector<RadioBearer* >::iterator it = dlBearerToDelete->begin();
it != dlBearerToDelete->end (); it++)
{
RadioBearer *bearer = (*it);
oldEnbRrc->DelRadioBearer (bearer);
}
dlBearerToDelete->clear ();
delete dlBearerToDelete;
// --> move ul bearers
#ifdef HANDOVER_DEBUG
std::cout << "\t UL radio bearers"<< std::endl;
#endif
std::vector<RadioBearerSink* > *ulBearerToDelete = new std::vector<RadioBearerSink* > ();
for (std::vector<RadioBearerSink* >::iterator it = oldEnbRrc->GetRadioBearerSinkContainer ()->begin();
it != oldEnbRrc->GetRadioBearerSinkContainer ()->end (); it++)
{
RadioBearerSink *bearer = (*it);
if (bearer->GetSource ()->GetIDNetworkNode () == ue->GetIDNetworkNode ())
{
bearer->SetDestination (newTargetNode);
newEnbRrc->AddRadioBearerSink (bearer);
ulBearerToDelete->push_back (bearer);
}
}
for (std::vector<RadioBearerSink* >::iterator it = ulBearerToDelete->begin();
it != ulBearerToDelete->end (); it++)
{
RadioBearerSink *bearer = (*it);
oldEnbRrc->DelRadioBearerSink (bearer);
}
ulBearerToDelete->clear ();
delete ulBearerToDelete;
// UPDATE THE RRC CONTEXT FOR THE UE
#ifdef HANDOVER_DEBUG
std::cout << "\t UE updates DL radio bearers "<< std::endl;
#endif
for (std::vector<RadioBearerSink* >::iterator it = ueRrc->GetRadioBearerSinkContainer ()->begin();
it != ueRrc->GetRadioBearerSinkContainer ()->end (); it++)
{
RadioBearerSink *bearer = (*it);
bearer->SetSource (newTargetNode);
}
#ifdef HANDOVER_DEBUG
std::cout << "\t UE updates UL radio bearers "<< std::endl;
#endif
for (std::vector<RadioBearer* >::iterator it = ueRrc->GetRadioBearerContainer ()->begin();
it != ueRrc->GetRadioBearerContainer ()->end (); it++)
{
RadioBearer *bearer = (*it);
bearer->SetDestination (newTargetNode);
}
}
}