Packet concentrator and switch including a controller for assign

Details Packet concentrator and switch including a controller for assign Packet concentrator and switch including a controller for assign

1989-01-03

1989-09-19

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 56, H04Q 1104, H04J 326

Patent

active

048688134

ABSTRACT:
In a packet concentrating arrangement which comprises a space switch (33) having N input terminals and N output terminals, an input device (34) for supplying the input terminals with up to N simultaneous packets in each of successive time periods, N buffers (31) connected to the respective output terminals to buffer, as buffered packets, the simultaneous packets delivered to the output terminals in the successive time periods, and a selector (32) for reading the buffered packets one at a time cyclically from the buffers, a controller (35) is connected to the input device to assign priorities to the input terminals supplied with the up to N simultaneous packets and to cyclically select the output terminals which should be connected to the input terminals assigned with the priorities. The packet concentrating arrangement may comprise first through M-th space switches controlled in this manner and a single space switch which has M input terminals connected to first through M-th selectors associated with the buffers used in connection with the first through the M-th space switches and M output terminals and is similarly controlled. Between incoming and outgoing terminals, a packet switching arrangement may comprise such a packet concentrating arrangement for supplying the buffered jackets one at a time to each outgoing terminal.

REFERENCES:
patent: 4566095 (1986-01-01), Devault et al.
patent: 4621359 (1986-11-01), McMillen
patent: 4754451 (1988-06-01), Eng et al.
patent: 4760570 (1988-07-01), Acampora et al.
"The Knockout Switch: A Simple, Modular Architecture for High-Performance Packet Switching," Yu-Shuan Yeh, IEEE Journal on Selected Areas in Communications, vol. SAC-5, No. 8, Oct. 1987, pp. 1274-1283.

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