Decider80211MultiChannel.cc

/*
 * Decider80211MultiChannel.cpp
 *
 *  Created on: Mar 22, 2011
 *      Author: karl
 */

#include "Decider80211MultiChannel.h"
#include "DeciderResult80211.h"

Decider80211MultiChannel::Decider80211MultiChannel(DeciderToPhyInterface* phy,
          double threshold,
          double sensitivity,
          double decodingCurrentDelta,
          int currentChannel,
          int myIndex,
          bool debug):
  Decider80211Battery(phy, threshold, sensitivity,
            currentChannel, decodingCurrentDelta,
            myIndex, debug),
  currentChannel(currentChannel)
{
}

Decider80211MultiChannel::~Decider80211MultiChannel() {}

void Decider80211MultiChannel::getChannelInfo(simtime_t start, simtime_t end, AirFrameVector& out)
{
  Decider80211Battery::getChannelInfo(start, end, out);

  for(AirFrameVector::iterator it = out.begin();
    it != out.end(); ++it)
  {
    AirFrame* af = *it;
    if(af->getChannel() != currentChannel) {
      it = out.erase(it);
      --it;
    }
  }
}

simtime_t Decider80211MultiChannel::processNewSignal(AirFrame* frame) {
  if(frame->getChannel() != currentChannel)
    return notAgain;

  return Decider80211Battery::processNewSignal(frame);
}

DeciderResult* Decider80211MultiChannel::checkIfSignalOk(AirFrame* frame) {
  DeciderResult* result = 0;

  if(frame->getChannel() != currentChannel) {
    ConstMappingIterator* bitrateIt
        = frame->getSignal().getBitrate()->createConstIterator();
    bitrateIt->next(); //iterate to payload bitrate indicator
    double payloadBitrate = bitrateIt->getValue();
    delete bitrateIt;
    deciderEV << "Channel changed during reception. packet is lost!\n";
    result = new DeciderResult80211(false, payloadBitrate, 0);
  } else {
    result = Decider80211Battery::checkIfSignalOk(frame);
  }

  return result;
}

void Decider80211MultiChannel::channelChanged(int newChannel) {
  assert(1 <= currentChannel && currentChannel <= 14);
  currentChannel = newChannel;
  centerFrequency = CENTER_FREQUENCIES[currentChannel];
  channelStateChanged();
}