Discrete Event Simulation

In discrete event simulation, the system-specified behaviour is described as a series of events that must be processed at a discrete point of the simulated time and that take a certain amount of real time. An event scheduler manages events and usually enables offline simulations. Nevertheless, some simulators integrate real-time event schedulers permitting online simulations. Online simulation requires taking into account inputs from the real network or from an application and the output of data that will be re-injected in the real network or sent to the application.