In the lab we already have internet access for future LoRaWAN↔internet gateway functionality
The intial thoughts about gateway hardware is to go the DIY route to gain as much knowledge about the components and the TTN/LoRa technologies as possible. The DIY gateway based on the ic880a board looks like an easy, capable and and relatively cheap solution. The TTN Labs and wiki contains loads of possible node and gateway constructions.
Possible gateway location
The labs' physical location is near ideal for coverage of the central parts of Esbjerg and we have a nice 3 story building to put an antenna on top of. However, we probably need the building owner's (which is Esbjerg Kommune) permission to install antennas on the roof. Have a feeling that might prove to be non-trivial.