Multiplex communications – Wide area network – Packet switching
Patent
1994-08-29
1995-09-26
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 92, 370 941, 39549701, 39520005, 395830, 39520014, H04L 1240
Patent
active
054539820
ABSTRACT:
A method for controlling packet communications between a source and destination causes a source to perform the steps of: transmitting a message to the destination which requests an allocation of a specified number of credits from the destination, a credit manifesting a portion of memory space in the destination that has been set aside to store a received packet; updating a stored credit value at the source upon receipt of a message from the destination which grants at least some of the requested credits; and transmitting a packet or packets from the source to the destination and decrementing the stored credit value for each transmitted packet. The source also includes means for transmitting a packet debit command which returns to the destination credits that are no longer required by the source, thus enabling the destination to reallocate the debited credits to another source which wishes to communicate.
REFERENCES:
patent: 4677616 (1987-06-01), Franklin
patent: 5029164 (1991-07-01), Goldstein et al.
patent: 5063562 (1991-11-01), Barzilai et al.
patent: 5239627 (1993-08-01), Beck et al.
patent: 5313597 (1994-05-01), Gephardt
Batchelder Brian D.
Johnson Karla
Kilk Erik
Pennington Ricky J.
Blum Russell W.
Hewlett--Packard Company
Olms Douglas W.
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