Title:
CBR/VBR TRAFFIC SCHEDULER
Document Type and Number:
WIPO Patent Application WO2000001120
Kind Code:
A9
Abstract:
A CBR/VBR traffic scheduler includes multiple CBR/VBR shapers to shape traffic over a wide range of peak cell rates for multiple CBR and VBR connection. Each shaper points to one or more VCs in a link list and includes a PCR counter (100) initialized to a first value, an SCR counter (105) initialized to a second and an arbitration counter (135). Each shaper is also connected to one of several clock sources, each having an associated clock cycle. A priority encoder, coupled to each arbitration counter, provides for determining priority between shapers having one or more associated VCs ready for transmission. Both the PCR counter (100) and the SCR counter (105) for each shaper is decremented during each associated clock cycle. For each shaper, when the PCR counter (100) is decremented to a value of zero, the arbitration counter (135) is initialized to a preset value and enabled for selection by the priority encoder.
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Inventors:
CHONG SIMON (US)
HUANG ANGUO TONY (US)
BLESZYNSKI RYSZARD (US)
STELLIGA DAVID A (US)
HUANG ANGUO TONY (US)
BLESZYNSKI RYSZARD (US)
STELLIGA DAVID A (US)
Application Number:
PCT/US1999/014268
Publication Date:
March 23, 2000
Filing Date:
June 25, 1999
Export Citation:
Assignee:
SOFTCOM MICROSYSTEMS (US)
CHONG SIMON (US)
HUANG ANGUO TONY (US)
BLESZYNSKI RYSZARD (US)
STELLIGA DAVID A (US)
CHONG SIMON (US)
HUANG ANGUO TONY (US)
BLESZYNSKI RYSZARD (US)
STELLIGA DAVID A (US)
International Classes:
G06F9/46; G06F12/02; H04L12/24; H04L12/46; H04L12/56; H04L29/06; H04L29/12; H04Q11/04; H04L29/08; (IPC1-7): H04L12/56
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