Multiplex communications – Data flow congestion prevention or control
Reexamination Certificate
2005-03-24
2009-02-03
Patel, Ajit (Department: 2617)
Multiplex communications
Data flow congestion prevention or control
C370S230100, C370S232000, C370S395400, C370S395430
Reexamination Certificate
active
07486617
ABSTRACT:
In a network device of a broadband access device, granularity of queue rates is improved by introducing intermediate rates in addition to those conventionally provided. When an intermediate rate between a first 10 Mbps queue rate and a second 5 Mbps queue rate, for instance, is desired for a traffic flow, a skip interval in a traffic shaper is configured to calculate a skip interval value according to the 5 Mbps rate, while each PDU of the specific traffic flow is subjected to a further override-interval-calculation decision: with a 50% probability, for instance, a skip zero queue interval (used for the 10 Mbps rate) is applied to the PDU, instead of the skip interval value calculated for the PDU in the traffic shaper. As a result, an intermediate rate, such as 7.5 Mbps, is obtained. According to another aspect of the present invention, latency and timing problems are alleviated such that a PDU length is determined, and a queue interval is calculated and written to an interval register already for a first block of a PDU read from a queue.
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Nokia Corporation
Patel Ajit
Squire Sanders & Dempsey L.L.P.
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