title: Why is the number of SNIRLostPackets so large?
body: <p>I am trying to simulate vehicular ad hoc networks using Veins 4.4, OMNeT++ 5.0 and SUMO 0.25.</p>
  
  <p>There are only one-hop broadcast beacons in the vanet, and each vehicle sends 10 beacons/s. The size of each beacon is 4000 bits. And nic.mac1609_4.bitrate is 6Mbps.</p>
  
  <p>In my simulation,there are 120 vehicles almost uniformly along the 2-km road, and the TX power of each vehicle is 200mW. After 20s' simulation, I select the vehicles in the middle part, and their SNIRLostPackets is almost 19000 and ReceivedBroadcasts is almost 3500, so the Packet Error Ratio is so high.
  I read the codes and find:if there is one bit error in one packet, the packet is consedered to be not correctly received. Is my finding right?</p>
  
  <p>The TX power is 200mW and vehicles are in each others' communication range. Then the network load at each vehicle is 4000*10*120 = 4.8Mbps &lt; 6Mbps,so the number of SNIRLostPackets should not be so large?</p>