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networkingrandomdelayns-3ndnsim

Adding channels with random delays in ns3/ndnsim

I am working on simulation scenarios using ns3/ndnsim, l've already done some using point to point channels between nodes which use constant delays. I would like to add randomness to these delays (say normal distribution).

I've worked on omnet++ which presents this functionality and can be used so easily.

My question, is there any way to do this on ns3?

Solution

  • There are two types of delays relevant here: transmission delay and propagation delay.

    Transmission delay is a function is the size of the frame, and the data rate of the medium. For a given link, the data rate is typically constant.

    Propagation delay is a function of the type of medium. For a wired medium, propagation delay is typically constant. Non-uniform propagation delays are associated with wireless mediums.

    So, effectively, you want a random propagation delay. ns-3 does have a RandomPropagationDelayModel, but it's only used by wireless mediums, so you're out of luck.