ESA is already setting up the quantum network of the future with telescope and nanosatellite like Asgardia-1
https://link.springer.com/article/10.1140/epjqt/s40507-017-0060-1

Entanglement is not only the possible way to send signals, chinese researchers set up an experiment do deliver information without delivering photons with Zeno Quantum effect.
https://arxiv.org/abs/1403.5082

In any way quantum communications will be surely the best choice for Asgardia communications.

Enrico Billi