Using commercial satellites to provide communication support for space missions

NASA is interested in using commercial satellites to provide broadband communications support for future space missions. we describe a large-scale simulation model that we plan to use for detailed performance studies of critical parameters. We focus on the unique challenges we face and how we plan to use simulations to investigate: the feasibility of using proposed commercial constellations to carry various classes of traffic between ground terminals and near-Earth spacecraft; and the performance optimization of such systems.