This project is aimed towards building a portable cell tower that is not only economic and reliable for sending valuable information, like Global Positioning System (GPS) locations, but also intuitive to deploy and use. The cell tower will act as a WiFi hotspot (mainly for mobile connectivity and short-distance voice calls and text) as well as utilize the Automatic Packet Reporting System (APRS) for long-distance text communication and GPS location reporting.
I've often thought a temporary cell phone base station for emergency situations would be useful but I wasn't sure whether they already exist. Also I don't know how it would connect to the 'outside world' or be powered. Have you already solved these problems?
My usage scenario is say after a hurricane or earthquake eg Haiti where people need to contact their loved ones and find online lists of those missing or found, and safe places to go.