Priority arbitration mechanism

Details Priority arbitration mechanism Priority arbitration mechanism

2007-03-06

2007-03-06

Marcelo, Melvin (Department: 2616)

Multiplex communications

Pathfinding or routing

Store and forward

C370S462000

Reexamination Certificate

active

10185028

ABSTRACT:
A method is provided for selecting a data source for transmission on one of several logical (virtual) lanes embodied in a single physical connection. Lanes are assigned to either a high priority class or to a low priority class. One of six conditions is employed to determine when re-arbitration of lane priorities is desired. When this occurs a next source for transmission is selected based on a the specification of the maximum number of high priority packets that can be sent after a lower priority transmission has been interrupted. Alternatively, a next source for transmission is selected based on a the specification of the maximum number of high priority packets that can be sent while a lower priority packet is waiting. If initialized correctly, the arbiter keeps all of the packets of a high priority packet contiguous, while allowing lower priority packets to be interrupted by the higher priority packets, but not to the point of starvation of the lower priority packets.

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patent: W000/20876 (2000-04-01), None

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