Browse Prior Art Database

Split-Bus Switching Network

IP.com Disclosure Number: IPCOM000046226D
Original Publication Date: 1983-Jun-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 52K

Publishing Venue

IBM

Related People

Croisier, A: AUTHOR

Abstract

A technique is described for increasing the data handling capability of a time-division switch composed of a rectangular arrangement of switching nodes connecting incoming and outgoing serial links to time-division highways, in which each highway is split into two parts.

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Split-Bus Switching Network

A technique is described for increasing the data handling capability of a time- division switch composed of a rectangular arrangement of switching nodes connecting incoming and outgoing serial links to time-division highways, in which each highway is split into two parts.

Fig. 1 shows a time-division switch comprising switching nodes (N) arranged in a 4-row x 8-column matrix. All the switching nodes in the same row are connected to the same highway. All the switching nodes in the same column are connected to the same incoming (IN) and outgoing (OUT) serial links, each carrying 256 time slots in a time frame of 125 microsecondes. For clarity, only those serial links which are connected to the first column have been shown in the figure. Each incoming serial link carries the incoming time slots from the stations attached thereto. they are deserialized in the addressed switching node and switched on the highway connected to this node. The time slots circulating on the highway are dispatched among the outgoing time slots to be carried by the outgoing serial links.

In this article, we propose to increase the switch data handling capability through splitting the highways in two parts. Since the two halves can now operate independently, the same time slot can now be used for two independent connections.

The splitting of each highway should be effected in such a way that each serial link has access to all others. An example is shown in Fig. 2 u...