Can you use a pair of mesh routers? One client outside the concrete to connect to the strong signal, then short cat5 through the concrete (eg window or vent) and then another inside the concrete to rebroadcast as a new network?
Can you use a pair of mesh routers? One client outside the concrete to connect to the strong signal, then short cat5 through the concrete (eg window or vent) and then another inside the concrete to rebroadcast as a new network?