Wi-Fi collision probability in ns-3

channel-access.sh

#!/usr/bin/env bash

Nsta=3 #Number of Wi-Fi stations

export 'NS_LOG=HeFrameExchangeManager'; #Enable logging (change FrameExchangeManager accordingly) 
./waf --run "scratch/skrypt --Nsta=$Nsta" &> output.log #Run simulation
cat output.log | grep StartFrameExchange > output-tx.log #Store log of all TX attempts
cat output.log | grep "receive ack" > output-rx.log  #Store log of all successful TXs #TODO: update this line to latest ns-3

# Calculate per-station statistics
for i in `seq 1 $Nsta`
do
   mac=$(printf '%02x\n' $i)
   tx[$i]=$(cat output-tx.log | grep mac=00:00:00:00:00:$mac | wc -l)
   rx[$i]=$(cat output-rx.log | grep mac=00:00:00:00:00:$mac | wc -l)
   echo $i,${tx[$i]},${rx[$i]} >> results.csv #Station ID, number of TX attempts, number of successful TXs
done

unset NS_LOG