An adaptive buffer control scheme for slotted ALOHA satellite channels

The behaviour of the slotted-ALOHA random access satellite channel wherein each user with a finite buffer changes the retransmission probability in accordance with the queue length is studied. The finite buffer of each user is divided into a number of strata and whenever the queue length moves from one stratum to the other, the retransmission probability is changed to reduce the average queueing delay. The analysis carried out in this paper reveals that significant reduction in the delay can be achieved by this technique employing only a few strata.