Multiplex communications – Wide area network – Packet switching
Patent
1991-11-07
1995-01-31
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 941, H04Q 1104
Patent
active
053864158
ABSTRACT:
In communication nodes inserted in a ring-shaped or bus-shaped transmission path, a transmitting section writes transmission packets into transmission buffers in appropriate order and sends out the transmission packets onto the transmission path at appropriate unoccupied time of the transmission path, whereas a receiving section temporarily stores packets directed to its own node into a receiving buffer and reads out the packets in the same order as that of writing them into the transmission buffers in the transmitting section. Further, in the transmitting section, special packets referred to as "restart cells" are inserted on all of the transmission paths or written into all transmitting buffers at intervals of a fixed period. In the receiving section, when the restart cell is received on a certain transmission path, readout of packets arriving at that transmission path is temporarily stopped. After restart cells have arrived at all transmission paths, readout is reopened from the first transmission path of the order.
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Gohara Shinobu
Ito Yutaka
Mori Makoto
Hitachi , Ltd.
Hsu Alpus H.
Olms Douglas W.
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