Congestion avoidance in ATM networks

The authors propose a new policy to prevent congestion phenomena in asynchronous transfer mode (ATM) networks. In particular, using a synthesis approach, they define and calculate the bandwidth which is assigned to every acceptable source from the ATM network. This bandwidth, which varies between the peak and the average bandwidth demands of the particular source, is called effective or virtual, and is mainly characterized from the burstiness of the source. In constant bit rate sources the effective bandwidth is equal to the peak rate. Based on the concept of effective bandwidth, a connection acceptance algorithm that leads to a very high utilization of network resources is formulated