| 摘要 |
In an ATM network node, cells of different service classes are stored in respective buffers and counters respectively associated with the buffers are initially loaded with full-count values respectively corresponding to the weight values of the service classes. The initial full-count values are updated respectively with the output values of the associated counters. Control circuitry sequentially interrogates the buffers and the counters in a round-robin fashion. If the output value of each interrogated counter is not decremented to a predetermined value, a cell is forwarded from the associated buffer and the counter is decremented by one. At the end of a round robin cycle, all of the counters are reloaded with the initial full-count values or the updated full-count values depending on the number of cells forwarded from each of the buffers.
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