InterPacket interval for OnOff Application

[Zoraze Ali]

Hello Everyone,

Please anyone can tell me how i can find the inter packet interval for onoff application. If i am configuring the application following way .


OnOffHelper onoff ("ns3::UdpSocketFactory",Address(InetSocketAddress (ueIpIface.GetAddress(j), ueportul+j)));
 
    
   onoff.SetAttribute ("OnTime", StringValue ("ns3::ExponentialRandomVariable[Mean=0.352]")); //for ns 3.16
   onoff.SetAttribute ("OffTime",StringValue("ns3::ExponentialRandomVariable[Mean=0.65]")); // for ns 3.16

 
  onoff.SetAttribute("PacketSize", UintegerValue(300));
  onoff.SetAttribute("DataRate",DataRateValue(DataRate("3000bps")));


Regards,
Zoraze Ali

[Zoraze Ali]

Please Someone help me in this , any suggestions guysss.

Regards,
Zoraze Ali

[Larissa Marinho Eglem de Oliveira]

Have you checked the Doxygen API?

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[Konstantinos]

Hi Zoraze,

You have the application that sends packets of size 300B at rate 3kbps when it is ON and nothing when it is OFF. These two stages are governed by the exponential distribution.

The inter-arrival of the packets in ON state is 0 (meaning that the packets are send continuously with no pause), but the overall inter-arrival depends on the OFF duration

Be aware that packet size is on Bytes, so in the ON state you will have 3000/(300*8) = 1.25. So Each new packet is created every 1.25seconds.

[Zoraze Ali]

Hi Larissa,

Yes i checked it but i couldn't find any thing related to Inter Packet Interval. There is a discription in the Header file but its about transmission start time and and delay .

Regards,
Zoraze

[zoraze ali]

Hello Kostantinos,

Thank you so much for you detailed reply , But i think it should be ( Packet Size / Data rate) which is (300*8 bits/3000 bits per second) that is 0.8 seconds. Please correct me if i am wrong.

Secondly if i keep my Packet size 300 Bytes and Data Rate 24000 bps that's mean i am sending one packet every 0.1 Seconds in ON state.

Regards,
Zoraze

[Konstantinos]

On Saturday, March 16, 2013 1:48:17 PM UTC, zoraze ali wrote:

Hello Kostantinos,

Thank you so much for you detailed reply , But i think it should be ( Packet Size / Data rate) which is (300*8 bits/3000 bits per second) that is 0.8 seconds. Please correct  

me if i am wrong.

We say the same thing by in different way. I calculated the period, you the frequency... 

 

Secondly if i keep my Packet size 300 Bytes and Data Rate 24000 bps that's mean i am sending one packet every 0.1 Seconds in ON state.

Yes.

 

Regards,
Zoraze

[ns3c...@gmail.com]

Hi. I was wondering whether it is possible to change the data rate of the onoff application during the simulation by using Scheduling?  Is this possible?  If yes what is the correct way of implementing it please because I keep getting errors.  Thank you, any help is appreciated

[zoraze ali]

Hello Kostantinos,

Thanks alot for answering. About the first question my answer is in Seconds not Hz i mean ( (bits) / (bits/second) ) give me seconds . How i can take it as frequency ? So sorry if its bit silly i just want to make my concept for this.

Regards,
Zoraze

[Tianye]

Hello Zoraze,

It has been three years since you asked this question. But when I saw your question, I had the same doubt. I thought in OnOffApplication, the time interval between packets is determined by the both the value of packet size/bit rate and the duration of the off time. 

Regards,

Tianye

在 2013年3月16日星期六 UTC-4下午12:59:02，zoraze ali写道：