Method and apparatus for scheduling cells for use in a static priority scheduler

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United States of America Patent

PATENT NO 5999534





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A method for scheduling a plurality of cells of N number of prioritized queues in a node of an ATM network is provided, wherein each prioritized queue has a static priority different from priorities of other queues. In response to receipt of a cell having a jth static priority, the cell is held for a holding time so that the cell turns to be an eligible cell for transmission. Meanwhile, an empty flag EF.sub.j `0` or `1` is generated on a time slot basis, wherein the empty flag EF.sub.j `0` or `1` represents whether or not there exists the eligible cell for transmission in the corresponding jth prioritized queue; and the jth prioritized queue is switched to a higher prioritized switch in a jth prioritized switch based on the empty flag EF.sub.j, wherein the jth prioritized switch has a jth and a lower input terminals, which are connected to the jth prioritized queue and the lower prioritized switch, respectively, and an output terminal, which is connected to the higher prioritized switch.

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Inventor Name Address # of filed Patents Total Citations
Kim, Deog-Nyoun Seoul, KR 5 126

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