Congestion-monitor control apparatus and switching system

Details Congestion-monitor control apparatus and switching system Congestion-monitor control apparatus and switching system

1996-03-22

1998-03-10

Olms, Douglas W.

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

370230, H04L 1228

Patent

active

057269874

ABSTRACT:
A congestion-monitor control apparatus monitors a congestion condition of each output highway in an asynchronous transfer mode switching system transferring cells to output highways by using a cell-storage buffer. The apparatus includes a monitor circuit monitoring the number of cells stored in the cell-storage buffer for each output highway at a plurality of timings during a given monitor time interval. The apparatus further includes a first determination circuit comparing the number of times when the number of cells from the monitor circuit is equal to or more than a first threshold value during the given monitor time interval with a second threshold value and determining whether the congestion has occurred in a corresponding output highway based on a comparison result.

REFERENCES:
patent: 5090011 (1992-02-01), Fukuta et al.
patent: 5179556 (1993-01-01), Turner
patent: 5313454 (1994-05-01), Bustini et al.
patent: 5335222 (1994-08-01), Kamoi et al.
patent: 5583858 (1996-12-01), Hanaoka

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