The OS³ (Open Source Satellite Simulator) model was ported to INET 2.1+ and is available on github. If you want to model satellite based communication, you will need accurate satellite mobility model.
OS³, the Open Source Satellite Simulator, was developed as a framework for simulating various kinds of satellite-based communication, based on OMNeT++. The aim was to create a platform that makes evaluating satellite communication protocols as easy as possible. OS³ is also be able to automatically import real satellite tracks and weather data to simulate conditions at a certain point in the past or in the future, and offer powerful visualization.