TCP/IP by itself supports this, or rather, doesn't care about the physical layer. Years ago I could disconnect the PPP phone networking on my laptop, close the laptop and go home. In the middle of a remote data transfer. Then come back the day after, open the laptop, connect the cellphone, re-dial the system. Data transfer continued.

As long as the same laptop had Windows on it this was broken though, because Windows insisted on shutting down any TCP/IP connections if the physical network broke. Which happened all the time with the cellphone, so I had to restart data transfers all the time and got a phone bill which could have bought several laptops. Manager not happy.