snreval80211.cc

基于omnet++开发的Mf框架下的802.11协议仿真。

// file:        SnrEval80211.cc
//
//  author:      Marc L鯾bers
// copyright:   (c) by Tralafitty
//              Telecommunication Networks Group
//              TU-Berlin
// email:       [e-mail]

// part of: framework implementation developed by tkn description: - a
// snrEval extension for the use with the other 802.11 modules


#include "SnrEval80211.h"
#include "Consts80211.h"

#include <AirFrame_m.h>


#define EV (ev.disabled()||!debug) ? (std::ostream&)ev : ev << logName() << "::SnrEval80211: "

Define_Module( SnrEval80211);

void SnrEval80211::initialize(int stage)
{
  SnrEval::initialize(stage);

  if(stage==0){
    EV <<"initializing stage 0\n";
    if(bitrate!=1E+6 && bitrate!=2E+6 && bitrate!=5.5E+6 && bitrate!=11E+6)
      error("Wrong bitrate!! Please chose 1E+6, 2E+6, 5.5E+6 or 11E+6 as bitrate!!");
    headerLength=192; //has to be 192; this makes sure it is!
  }
}


/**
 * The duration of the packet is computed, with respect to the
 * different bitrates of header and data. The header is sent with
 * 1Mbit/s and the rest with the bitrate read in in initialize().
 **/
double SnrEval80211::calcDuration(cMessage *frame)
{
  EV <<"bits without header: "<<frame->length()-headerLength<<", bits header: "<<headerLength<<endl;
  return  ((frame->length()-headerLength)/bitrate + headerLength/BITRATE_HEADER); 
}