Hello everyone, I am simulating AODV with HELLO messages in ns2. However, I have ran 5 simulations with different traffic and movement patterns (which are generated using the following settings) and the average packet delivery ratio is only around 70% ? Where in some paper I have seen the ratio could be as high as 95-98% with the similar simulation settings. However, if I increase the packet rate from 2 to 4 or even 6, then the results are much closer to the other published results. Could anyone please please kindly suggest me what could be the possible reasons that causes poor packet delivery ratio results at lower offered load? I dunno what settings i should be changing in the ns2 tcl script. Actually I'm trying to follow the standard settings for Lucent WaveLAN. so, the bandwidth should be 2Mbps. I know if i increase the bandwidth , the packet ratio would be higher, but is there any other reasons that could help me to get a better ratio at lower offered load.
My simulation settings are * 2200x600 dimension, * 100 nodes * max node speed is 20m/s * Packet rate 2 pkt/sec * Simulation time 500 sec * Pause time 100 sec * 40 CBR source * 2Mbps shared media bandwidth * 64 pkts in sending buffer * 30 sec for timeout before dropping packet from sending buffer Thank you very much Regards, Martin
