Multiplex communications – Data flow congestion prevention or control – Flow control of data transmission through a network
Reexamination Certificate
2002-09-25
2010-11-23
Tran, Phuc H. (Department: 2471)
Multiplex communications
Data flow congestion prevention or control
Flow control of data transmission through a network
C370S389000, C370S412000
Reexamination Certificate
active
07839785
ABSTRACT:
A method and system for dropping lower priority packets for transmission over a communication medium is provided. A cable modem termination system receives one or more packets to be transferred to one or more data providers, each packet having a priority. Then, based on the priority, a media access controller stores each of the packets in one or more priority queues in a fixed shared memory space in such a way as to maintain the order in which the packets were received in each of the priority queues. The media access controller monitors the number of packets in each of the priority queues and signals an interrupt when a packet threshold is exceeded in one or more of the priority queues. The media access controller then drops lower priority packets in the fixed shared memory space based on the order received to guarantee that there is enough memory to store higher priority packets in the fixed shared memory space.
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International Search Report issued Dec. 16, 2002, for Appln. No. PCT/US02/30523, 5 pages.
Gomez Francisco J
Lansing Shane
Pantelias Niki
Vu Young
Broadcom Corporation
Hom Shick
Sterne Kessler Goldstein & Fox P.L.L.C.
Tran Phuc H.
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