Design and performance evaluation of a distributed knockout switch with input and output buffers

Author

Cheng, Y.-J. ; Lee, T.-H. ; Shen, W.-Z.

Author_Institution

Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan

Volume

143

Issue

3

fYear

1996

fDate

6/1/1996 12:00:00 AM

Firstpage

149

Lastpage

154

Abstract

A high-capacity switch is an essential component for the success of broadband ISDN. A nonblocking ATM switch with input and output buffers is proposed and its performance is evaluated. The proposed switch is a modified version of an existing distributed-knockout-switch. In the proposed switch architecture, an input port with a nonempty queue always sends a cell to the switch at the beginning of each time slot. The cell sent out from an input port reaches either its destination output port (if it wins the contention) or a different input port (if it loses). A priority scheme is adopted to preserve service-cell sequencing. A cell is discarded if it loses a predetermined number of consecutive contentions. A modified architecture which can provide multicast service is also presented. Simulations are performed to evaluate the proposed switch architecture under both uniform- and hot-spot nonuniform-traffic models

Keywords

B-ISDN; asynchronous transfer mode; buffer storage; electronic switching systems; queueing theory; telecommunication traffic; B-ISDN; broadband ISDN; contentions; destination output port; distributed knockout switch; high capacity switch; hot spot nonuniform traffic models; input buffers; input port; multicast service; nonblocking ATM switch; nonempty queue; output buffers; performance evaluation; priority scheme; service cell sequencing; simulations; switch architecture; switch design; uniform traffic models;

fLanguage

English

Journal_Title

Communications, IEE Proceedings-

Publisher

iet

ISSN

1350-2425

Type

jour

DOI

10.1049/ip-com:19960500

Filename

502915