Asynchronous transfer mode exchange system and priority control method
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United States of America Patent
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Aug 15, 2000
Grant Date -
N/A
app pub date -
Oct 30, 1996
filing date -
Oct 31, 1995
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A call reception control circuit 1 sets each guaranteed band width required for assuring communication quality of the respective band width demand classes in the corresponding N counter Nc, Ntv and Nv at a certain time interval Ts. The call reception control circuit 1 also sets values defined by the ratio of the W counter Wabr and Wubr of the respective best effort class to use the remained band width. The value 1 is subtracted from each value of the N counter Nc, Ntv and Nv and W counter Wabr and Wubr at every output of the cell from the corresponding class. A priority control process circuit 2 outputs cells to an output channel 3 according to priority levels giving a priority to the band width demand class having the value of the N counter not set to 0 over the band width demand class and the best effort classes having the value of the N counter set to 0.
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