Multiplex communications – Wide area network – Packet switching
Patent
1992-07-22
1994-05-03
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 941, H01Q 1104
Patent
active
053094301
ABSTRACT:
A telecommunication system for transmitting cells through switching nodes (N1-3) interconnected by groups (LG12, LG23) of transmission links, each node including an asynchronous switching network (SN1-3) which comprises several switch elements. At least one of these switch elements possesses a routing group possibility whereby the cells are distributed over its outlets and so further over the different transmission links of the link group to which the switching network is connected. This distribution is performed in function of a self-routing tag which is derived from external routing data associated with the cell. At the input ports of either each or only the first switching network (SN1) of the system, the external routing data is translated in a self-routing tag which is for instance added to the header of the cell, while at the output ports of each or of only the last switching network (SN3) of the system respectively, the self-routing tag is removed from this header. Some switch elements possess a multicast possibility whereby the cells are transferred to several outlets thereof and thereby to several link groups to which the switching network is connected.
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IEEE Inforcom '90, The Conference of Computer Communications, Jun. 3, 1990, San Francisco, U.S., pp. 668-676 S. Liew et al. "Performance Analysis of Asymmetric Pocket Switch Modules with Change/Grouping".
Ohtsuki et al. "A High-Speed Packet Switch Architecture with a Multichannel Bandwidth Allocating" Proceedings of Infocom '91, pp. 155-162.
De Somer Michel P.
Henrion Michel A. R.
Pauwels Bart J. G.
Verhille Henri A. J.
ALCATEL N.V.
Blum Russell W.
Olms Douglas W.
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