Ns2 is a software for wireless and wired simulations. you can simulate real time simulations with Tcl scripts.. its available here
"http://www.isi.edu/nsnam/ns/"...
i am not sure about the scenario you are specifying..
Make sure you download the allinone package to resolve dependency problems..The latest version is Ns 2.32..
Running Ns2 in LINUX is always advisable.. its easy too.. installing in windows and using is a bit difficult for beginners..
all the best for your project..