Multiplex communications – Wide area network – Packet switching
Patent
1994-06-10
1995-12-12
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 941, 370113, H04L 1256
Patent
active
054756820
ABSTRACT:
A method of regulating backpressure traffic in a packet switched network made up of a plurality of switching elements each having a local buffer memory identifies at least one switching element which succeeds at least one other switching element in a transmission path. The at least one succeeding switching element has a congested local buffer memory. A backpressure signal is transmitted to the at least one other switching element. Packets destined for the succeeding switching element are queued in the local buffer memory of the at least one other switching element. Next, it is determined when the occupancy of the local buffer memory for the other switching element has exceeded a predetermined threshold. In response to the exceeded predetermined threshold, the other switching element ignores the backpressure signal transmitted from the succeeding switching element and transmits the queued packets to the succeeding switching element.
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Choudhury Abhijit K.
Hahne Ellen L.
AT&T Corp.
Brown Kenneth M.
Conover Michele L.
Ngo Rickey Q.
Olms Douglas W.
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