Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2007-04-10
2007-04-10
Qureshi, Afsar (Department: 2616)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S354000, C370S395700, C370S430000, C370S474000
Reexamination Certificate
active
10063384
ABSTRACT:
One embodiment of a method for switching ATM cells using Early Packet Discard and Partial Packet Discard is provided. Initially, a first cell of an AAL5 packet is received at an input port. Next, it is determined whether there is likely to be enough buffering available to handle the whole packet (i.e., up to 64 Kbytes). If it is determined that sufficient buffering is unlikely to be available, the entire packet is discarded. If it is determined that sufficient buffering exists, the cell is received and buffered for subsequent transmission. Next it is determined whether the flow's buffer is filled at any time after initial transmission of a AAL5 cell but before reception of the final cell. If such a state is determined, the current cell is discarded and a flag is set in the flow structure so that subsequent cells of the same packet, except the last, will also be discarded.
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Chick Timothy John
Knight Brian James
Conexant, Inc.
Qureshi Afsar
Thomas Kayden Horstemeyer & Risley
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