Control of packet buffer using token buckets with different token bucket sizes
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United States of America Patent
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Nov 13, 2012
Grant Date -
Sep 30, 2010
app pub date -
Jun 16, 2010
filing date -
Dec 17, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
Control of readout of packets from a packet buffer is disclosed in which equal numbers of tokens are removed and used from token buckets having different bucket sizes; tokens are generated at token rates for the token buckets, wherein each token rate is preset such that the larger the token bucket size, the lower the token rate, and the generated tokens are added to the token buckets; a used-token count is measured for each token bucket, and a stored-token count is measured for each token bucket, with the stored-token count given a negative value if each token bucket is empty; and a number of data packets are read out of the packet buffer, which depends on the measured value of the used-token count for each token buffer.
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