A contention channel access control policy- retreatable dual mean collision density control policy (REDME) for random channel access control

A random multiple access channel control policy to improve delay and throughput performance of the minislot ALOHA reservation protocols is proposed and studied. A prioritised multiple access scheme derived from the study is also simulated. The policy permits channel access according to two estimated values of the mean collision density based on the previous l (l=1, 2, 3..., called history length) request access (RA) channel feedbacks. It is shown that the policy reduces collisions in the RA channel and better performance is provided by applying optimal policy parameters to the access control process. It is also shown that the policy can prioritise a random multiple access process