Method and apparatus for token distribution

Electrical computers and digital processing systems: multicomput – Computer network managing

Reexamination Certificate

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Details

C709S224000, C709S225000, C709S226000, C370S400000, C370S431000, C370S450000, C370S909000

Reexamination Certificate

active

06965933

ABSTRACT:
A method and apparatus for token distribution include providing one or more nodes of a plurality of network nodes with a token machine that includes counters associated with each of other network nodes having a token machine. Each time a token possessing network node implicitly or explicitly passes the token to another network node having a token machine, counter values of each of the counters associated with each node having a token machine are adjusted. When a token is passed, the counter value of the receiving node is adjusted based, at least in part, on an initial token interval value, and counter values associated with other nodes are adjusted toward a threshold value. The decision as to where the token is passed may be based, at least in part, on the value of a counter and/or an assigned counter priority level. The system or method also may include priority slots in which the token is unconditionally passed to a node assigned the priority slot, and an ARQ scheme for acknowledgment of transferred information.

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