4G hardware is mature and fairly reliable at this point. There's probably 5G base equipment that would work too, but the client hardware is probably also an iss

4G hardware is mature and fairly reliable at this point. There's probably 5G base equipment that would work too, but the client hardware is probably also an issue. 4G speeds ought to be more than enough for a lot of traffic -- it's not that the astrounauts will be streaming movies off Netflix when they're outside or anything.