ATM network switch with congestion control
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 19, 2000
Grant Date -
N/A
app pub date -
Dec 4, 1997
filing date -
Jun 5, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ATM network switch (11) including a buffer (24) for buffering the flow of ATM cells and a congestion control mechanism (23). The congestion control mechanism establishes a value Max, representing the maximum permissible number of ATM cells which may be stored in the buffer. The switch includes a predetermined offset value K for determining the maximum occupancy of the buffer for the connection. The congestion control mechanism determines the total number of cells TSC currently stored in the buffer and the number of cells VcCnt stored for a given connection, determines the remaining capacity BS of the buffer, calculates an adjusted value of Max as a function of TSC and BS, compares the adjusted value Max' with VcCnt, and discards the cell if VcCnt is greater than the adjusted value.
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