alohanet, also known as the aloha system,frank f. kuo (1995). "the aloha system". acm computer communication review: 25 or simply aloha, was a pioneering computer networking system developed at the university of hawaii. alohanet became operational in june, 1971, providing the first public demonstration of a wireless packet data network. the alohanet used a new method of medium access (aloha random access) and experimental ultra high frequency (uhf) for its operation, since frequency assignments for communications to and from a computer were not available for commercial applications in the 1970s. but even before such frequencies were assigned there were two other media available for the application of an aloha channel â cables and satellites. in the 1970s aloha random access was employed in the widely used ethernet cable based network and then in the marisat (now inmarsat) satellite network. in the early 1980s frequencies for mobile networks became available, and in 1985 frequencies suitable for what became known as wi-fi were allocated in the us. these regulatory developments made it possible 
Channel_access_methods History_of_the_Internet Media_access_control Packet_radio