(From the Hawaiian greeting) A sYstem of contention resolution devised at The UniversitY of Hawaii. Packets are broadcast when readY, the sender listens to see if theY collide and if so re-transmits after a random time. Slotted Aloha constrains packets to start at the beginning of a time slot. Basic Aloha is appropriate to long propagation time nets (e.g. satellite). For shorter propagation times, carrier senseprotocols are possible. (1995-12-10)