I need a simulator to analyze the bahavior of mobile nodes mowing according to a synhetic mobility pattern described by the probabilistic ditribution of inter-contact times of mobile nodes.
I'm not aware of any simulator having that exact feature. However, some workarounds are possible. To get exponential intercontact time (ICT), you can use the random waypoint mobility model. You can use real-life traces to get power law distributed ICT. And, of course, you can write your own module to generate connection events with desired ICT distribution.
Thanks for your answer, indeed I use RWP mobility pattern and estimate of the distribution of ICT post simulation. I was wandering if I could avoid this backward estimation of the ICT distribution through fitting by having at the start of the simulation the exact parameter value of the exponential distribution :)