A Combined Input-Output Queuing ATM Switch with m Intenal Links for Cell Transfer

Carlos Roberto dos Santos, Shusaburo Motoyama

DOI: 10.14209/its.2002.141

Evento: 2002 International Telecommunications Symposium (ITS2002)

Keywords: computer networks ATM switching

Abstract

"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 10e-8, independent of the switch size. Key words: computer networks, ATM, switching."

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