Dynamic entry-to-exit flow control for virtual circuit networks

The authors propose a scheme for virtual circuit networks by which the entry-to-exit (ETE) windows of the virtual circuits passing through a congested node are dynamically varied to reduce buffer occupancy. The aim is to prevent severe congestion rather than to treat it after it occurs. Simulations show that the proposed scheme reduces average transit delay under high traffic conditions. By dynamically controlling the entry-to-exit window transit delay can be reduced without throughput degradation. The scheme suggested can be modified so that the virtual circuits can be throttled selectively to ensure better fairness.<>