Sorting unit for a switching node comprising a plurality of digital switching matrix networks for fast, asynchronous packet switching networks
US4905224A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1988 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | Sep 22, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/256
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A sorting unit for a switching node comprising a plurality of digital switching matrix networks for fast, asynchronous packet switching networks, which switching node comprises a multi-stage, mixed connection structure based, for example, on a banyan tree structure, that forms a complete truck group, such that every input of the switching node is connectable to every output thereof. The digital switching matrix networks are fashioned as self-controlling (self-routing) sorting units that are a multi-stage circuit switching arrangement comprising 2m-1 beta element columns of m beta elements (.alpha.) each, whereby 2m is equal to the number of inputs and equal to the number of outputs of the sorting unit, and m is a power to two. The sorting unit is divided into a first sub-unit comprising m columns that functions as a distribution unit and a second sub-unit comprising m-1 columns that functions as a correction unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.