Communication device with multi-stages of traffic shaping functions
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United States of America Patent
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Jan 29, 2008
Grant Date -
Jan 9, 2003
app pub date -
Aug 22, 2002
filing date -
Jul 9, 1998
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A traffic shaper comprises a cell buffer for temporarily storing an ATM cell arrived thereat, a first calculator for calculating an estimated cell sending time according to a VC contracted bandwidth, a second calculator for calculating an estimated cell sending time according to a VP contracted bandwidth, a binary tree VP sorting circuit for determining VP to be sent in top priority, a binary tree VC sorting circuit for determining VC to be sent in top priority, and a sending circuit for sending a cell in which the determined VP and VC are both brought to a transmittable state. The VP estimated sending time is revised according to the VC estimated sending time.
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