Multiplex communications – Wide area network – Packet switching
Patent
1989-02-24
1990-07-17
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 856, H04J 326
Patent
active
049425692
ABSTRACT:
One technique of a congestion control method for packet switching apparatuses, in which a plurality of priority data indicative of different demands, such as a first priority data indicative of immediateness priority and a second priority data indicative of necessity priority, are attached to each packet. In congestion of a packet queue, such control is carried out that such a packet as having the high first immediateness priority is rearranged as located in the front part of the queue while such a packet as having the high first immediateness priority but having the low second necessity priority is first discarded according to the first and second priority data of the packets, whereby major demands for the each packet are concurrently satisfied. For example, a packet of data transferred between telephone set terminals has a strong immediateness demand but has a relatively weak necessity demand, whereas, a packet of data transferred between data terminals has a relatively weak immediateness demand but has a strong necessity demand.
REFERENCES:
patent: 4607363 (1986-08-01), Platel et al.
patent: 4757529 (1988-07-01), Glapa et al.
patent: 4769811 (1988-09-01), Eckberg, Jr. et al.
patent: 4864560 (1989-09-01), Quinquis et al.
Kabushiki Kaisha Toshiba
Marcelo Melvin
Olms Douglas W.
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