Packet switch for providing a minimum cell rate guarantee

Details Packet switch for providing a minimum cell rate guarantee Packet switch for providing a minimum cell rate guarantee

2005-02-22

2005-02-22

Duong, Frank (Department: 2666)

Multiplex communications

Data flow congestion prevention or control

C370S230100

Reexamination Certificate

active

06859432

ABSTRACT:
A packet switch includes a memory unit for storing a flag for indicating a state of existence of a packet in a buffer memory, a peak cell rate packet interval value for restricting a read-out rate to a peak cell rate or under, and a minimum cell rate counter initial value expressed as a minimum cell rate in a way of making these parameters corresponding to every connection, a peak cell rate counter unit decremented by a predetermined value at every packet read-out timing with the peak cell rate packet interval value serving as an initial value, a minimum cell rate counter unit for retaining a value of a corresponding connection, which is decremented by a predetermined value each time the packet is read out of the buffer memory, and a read-out control unit for setting as a read-out target the packet corresponding to a connection exhibiting a maximum value of product of the maximum cell rate packet interval value and a value retained in the minimum cell rate counter unit at the packet read-out timing.

REFERENCES:
patent: 6144636 (2000-11-01), Aimoto et al.
patent: 6243359 (2001-06-01), Roy et al.
patent: 6330240 (2001-12-01), Kozaki et al.
patent: 6480467 (2002-11-01), Hernandez-Valencia
patent: 6501731 (2002-12-01), Chong et al.
patent: 6611527 (2003-08-01), Moriwaki et al.
patent: 6680907 (2004-01-01), Bonaventure

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