A Combined Input-Output Queuing ATM Switch with m Intenal Links for Cell Transfer
Carlos Roberto dos Santos, Shusaburo Motoyama · Anais do 2002 International Telecommunications Symposium · 2002
In this paper a combined input-output queuing ATM switch with m internal links for cell transfer is proposed.A single buffer is used at each input, whereas each output needs m buffers, where m is the number of internal links (or channels) that connect each input to m output buffers.The proposed structure uses physical internal links instead of time division, thus no speedup is required.Since until m cells can be transmitted to the same output line from different inputs the head of line blocking (HOLB) probability can be reduced and a very high throughput can be obtained.Simulation results show that for m=3, only a 10-cell size buffer at each input port is required to achieve a cell loss probability better than 10 -8 , independent of the switch size.