Controlling congestion in a packet switched data network

Details Controlling congestion in a packet switched data network Controlling congestion in a packet switched data network

2008-12-03

2011-12-06

Pham, Chi (Department: 2471)

Multiplex communications

Data flow congestion prevention or control

Flow control of data transmission through a network

C370S235000

Reexamination Certificate

active

08072888

ABSTRACT:
A method of controlling congestion in a packet switched network includes transmitting a pause message to a node upstream of a congested node to instruct it to cease sending for a period of time. The congested node also sends information to the upstream node informing it of the buffer size required to relieve congestion. If the buffer capacity of the upstream node is greater than or equal to the signalled amount required, no further action is taken. If the buffer capacity of the upstream node is less that the required amount, it in turn sends a pause message to a node upstream of it, together with an indication of the required buffer size to reduce congestion, taking into account the amount available from the sending nodes.

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