How to resolve no network connectivity after waking up from sleep?

I tried disconnect the USB-C cable from the TS4 and reconnect but there is no change.

Have you tried connecting the dock to a different USB-C port on the computer?

Have you tried eliminating the dock and connecting the computer directly to the access point? That could clearly identify or eliminate the dock as the problem. Simple test but may require an adaptor.

Is the dock self-powered?

Here's another "strange but true" issue I had with the same symptoms. After a trip I had to restart my Macbook Pro after evvery sleep session. After a week of trying all sorts of cures, I looked at the system log and found the computer was still trying to connect to the internet service of a lodge where we'd stayed two weeks before and some 45 miles away!

I fixed that by doing System Preferences > Network and chosing "Wi-fi." In that pane I checked the "Advanced...."tab that shows networks previously joined. There was the lodge. I deleted it and had not further issues. Newer OS versions allow you to deselect "auto-join" for individual networks as well as deletion:

That computer is a battery-CAPABLE device. It is not optimized as a battery-operated device. (It is NOT an iPhone.)

In general, you should ALWAYS connect AC power when it is possible to do so, and only run on batteries (which will be somewhat slower) when no AC sources are at hand. Your Mac will NEVER over-charge. 

connect the power adapter

then, restart your Mac