Hi, I need to set up WiFi in my entire office (which encompasses two floors of a building). Preferably, I'd like to use only one Primary Base Station (and if possible, only Apple Products since my office uses only Macs). I currently have an incoming wired Internet Connection in one of the rooms (should I introduce more in other rooms as well or is it possible to wirelessly transport it to the rest of the office?). Also, due to extra thick concrete walls (and lots of shelves of books, etc. the average network range gets reduced by about 50% in the office).
You can use Access points, and both wired as well as wireless Access Points.
Wired is preferred to get more bandwidth. You can use wireless, obviously, if you dont want the wired hassles, but from experience, it would be preferred to go for wired, as it sometimes can be more convenient, and use wireless as a backup, in case the wired connections do not work.
A good product is Netgear and they come in white as well, and almost looks like an apple product.
For internal office where there are lots of obstructions, you can try and put the wireless access points on the ceiling, i.e. just above the fall ceiling, or underneath it also, to get better coverage.
There are also separate antennas that act as signal boosters to get more coverage.