If you’re interested in learning more about WiFi and cell phone technologies that might work on Dewees, here are some good background articles…
WiMax is a longer-range WiFi technology. From the articles listed below, it sounds like WiMax is still a ways off, but may be gaining traction. There are also several competing technologies, such as LTE.
Femtocells are small scale cellular phone networks. Some companies are trying to put them on computer chips. Just image a cellphone tower inside your laptop. Very cool. Here’s some background material on Femtocells…
A google search on “WiMax” or “Femtocell” will turn up lots of additional information.