Multiplex communications – Data flow congestion prevention or control
Reexamination Certificate
2005-07-26
2005-07-26
Chin, Wellington (Department: 2664)
Multiplex communications
Data flow congestion prevention or control
C370S230000, C370S231000, C370S232000, C370S233000, C370S234000, C370S235000, C370S235100
Reexamination Certificate
active
06922390
ABSTRACT:
A method and apparatus for controlling congestion at a node in a data network. The node includes an input for receiving traffic units from the network, an output for releasing traffic units to the network and a control unit. The control unit is responsible for estimating a level of data occupancy of at least a portion of the network by looking at the traffic units received at the input from a remote node in the network. When the data occupancy level reaches a certain threshold, the node issues a control signal to the remote node such that the remote node lowers its rate of traffic units input in the network. By estimating the network data occupancy level, congestion at the node can be effectively foreseen and controlled.
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Chapman Alan S.
Kung Hsiang T.
Chin Wellington
Ho Chuong
Nortel Networks Limited
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