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Control Technique for Time-Multiplexed Crossbar Networks

IP.com Disclosure Number: IPCOM000034746D
Original Publication Date: 1989-Apr-01
Included in the Prior Art Database: 2005-Jan-27

Publishing Venue

IBM

Related People

Authors:
Dias, DM Franaszek, PA Georgiou, CJ Goyal, A Kumar, M [+details]

Abstract

This article describes a simple routing technique for crossbar matrices which are used to switch circuits between several high bandwidth trunks. The trunks are slotted in time and a group of successive slots constitutes a frame. The number of circuits that can be multiplexed on the trunk is equal to the number of slots in a frame. The crossbar- matrix is time multiplexed (at the same rate as the input trunks). In each slot, it transfers information from the incoming trunks to the outgoing trunks. (Image Omitted) Slot interchangers are provided between the crossbar-matrix and each incoming trunk. Thus, if two or more calls which use the same slot on a different incoming trunk are to be switched to the same outgoing trunk, they can use different slots in the crossbar-matrix and on the desired outgoing trunk.