Improving stability and delay characteristics of multiple access systems employing ALOHA type channels

An approximate analysis of a flow control technique for improving stability and delay characteristics of multiple access schemes employing collision type channels is presented. The technique allows users to enter two retransmission modes with differing retransmission rates. The condition under which such systems exhibit absolute stability and the minimum delay compatible with that condition have been determined. It is found that a significant improvement in delay is possible without having to sacrifice absolute stability.