Multiplex communications – Wide area network – Packet switching
Patent
1984-07-16
1986-04-15
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 94, H04J 326
Patent
active
045832196
ABSTRACT:
Fair and fast service to a plurality of channels served by packet switches at nodes interconnected through a common carrier facility is achieved by controlling the quantity of data sent from any one channel to another. When data arrives at a node from a channel, the channel address is entered in line in the first of two channel address queues and the data is entered in a separate data queue. Each channel address is read from the first queue, a predetermined number of data bytes is read from the corresponding data queue and sent in a frame to a distant node. Thereafter, the channel address is entered at the end of the second, lower priority queue. The frame may have data bytes from other first queue channels but the frame length is limited either by a predetermined number of bytes or when no more channel addresses remain in the first queue. When no channel addresses remain in the first queue, a new frame is started by reading a channel address from the lower priority second queue. A frame may have data from a data queue corresponding to a channel address in the second queue followed by data from a data queue corresponding to a channel in the higher priority first queue.
REFERENCES:
patent: 4317195 (1982-02-01), Barberis et al.
patent: 4399531 (1983-08-01), Grande et al.
patent: 4443875 (1984-04-01), Blausten
patent: 4475192 (1984-10-01), Fernow et al.
patent: 4484326 (1984-11-01), Turner
patent: 4488288 (1984-12-01), Turner
patent: 4499576 (1985-02-01), Fraser
patent: 4516238 (1985-05-01), Huang et al.
"An Architecture for a Flexible Integrated Voice/Data Switch", ICC '80 International Conference on Communications, Seattle, WA, USA (8-12 Jun. 1980) pp. 21.6.1-21.6.5 by M. J. Ross, J. H. Gottschalck, and E. A. Harrington.
AT&T Bell Laboratories
Nimtz Robert O.
Olms Douglas W.
Roberts Patrick E.
Rokoff Kenneth I.
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