ALOHA in it's full form stands for: Advocates of Linux Open-source Hawaii Association.
It is a computer protocol that was designed at the University of Hawaii in the 70's for use with satellite communication systems in the Pacific.
The protocol itself is quite simple. When a frame* arrives for transmission, the user transmits the frame, and awaits an acknowledgement. If this acknowledgement arrives, the process is complete, and we know that the transmission of the frame was successful. If not, process is completed again.
Problems
If two users transmit at the same time, and they overlap, the transmission will be corrupted, and neither device will receive a acknowledgement.
*In this instance, a frame is defined as a packet of data.
