LAUSR

In recent years, multimedia video services have developed rapidly. However, the increasing number and variety of videos is likely to cause packet loss and delay during video transmission. Therefore, how to use channel resources more effectively becomes an urgent problem to be solved. This paper improves the existing random multiple access protocol and designs the 1-persistent CSMA (Carrier Sense Multiple Access) protocol with variable collision length. At the same time, considering the different requirements of different video services, multi-priority 1-persistent CSMA random multiple access control protocol with variable collision length is proposed, which sets different priorities and then competes fairly. Finally, the paper analyzes the performance of the multimedia video service access algorithm: the 1-persistent CSMA access protocol with variable collision length is higher than the traditional 1-persistent CSMA throughput, the performance is better, at the same time, in the case of a relatively high arrival rate, the advantage of throughput is more obvious.