devAP.cpp

Go to the documentation of this file.

#include <list>

#include "devAP.h"

DevAP::DevAP(DESystem *_System)
: DEDevice(_System)
{
  theBandProbe = 0;
  theBandSliceProbe = 0;

  halfSlot = DETime(time_int(1), time_int(0), time_int(0)) / 2;

};

void DevAP::setup(ParamManager *Param, GlobalProbeManager *Results)
{
  Param->addClass ("AccessPoint", "Slotted Aloha access point");  
}

void DevAP::Initialize()
{

  RoundTripDelay = get<DETimeParameter,DETime>(Param, "RoundTripDelay",  "SAloha", "");
  
  queue.clear();
  
  if( theBandProbe )
    delete( theBandProbe );
  theBandProbe = new ProbeBand( "theBand" );

  if( theBandSliceProbe )
    delete( theBandSliceProbe );
  theBandSliceProbe = new ProbeBandSlice( "theBandSlice" );
}

void DevAP::HEv_AP_Packet_Arrival(DevPkt* sender)
{
  if( queue.empty() )
    newEvent(new Ev_AP_SelfCheck(this), halfSlot );
  
  queue.push_back(sender);
}


void DevAP::HEv_AP_SelfCheck()
{
  if( queue.size() == 1 ) {
    // no collision
    newEvent(new Ev_Pkt_Feedback(queue.front(), 0), RoundTripDelay );
    theBandProbe->Observe(1.0);
    theBandSliceProbe->Observe(1.0);
  }
  else {
    // collisions
    list<DevPkt*>::iterator dtListIter;
    for(  dtListIter=queue.begin(); dtListIter!=queue.end(); dtListIter++)
      newEvent(new Ev_Pkt_Feedback(*dtListIter, 1), RoundTripDelay ); 
  }
  queue.clear();
}

---