Method of determining whether to use preempt/resume or alternate

Details Method of determining whether to use preempt/resume or alternate Method of determining whether to use preempt/resume or alternate

1992-08-07

1994-08-30

Safourek, Benedict V.

Multiplex communications

Wide area network

Packet switching

370 99, 370 941, 34082551, H04Q 139

Patent

active

053434730

ABSTRACT:
A method is disclosed for determining whether to use a preempt/resume protocol or an alternate protocol in transmitting data packets from a local system to a remote system. Each system informs the other whether it supports preempt/resume and provides the sizes of the largest low priority data packets it can send and receive. The local system always elects the alternate protocol unless both support preempt/resume. The local system then selects the lesser of (a) the largest low-priority data packet it can send and (b) the largest low-priority data packet the remote system can receive. Use of prompt/resume is initiated by the local system only where a packet of the selected size would be delayed in reaching the remote system by more than a predetermined interval.

REFERENCES:
patent: 4500987 (1985-02-01), Hasegawa
patent: 4542380 (1985-09-01), Beckner et al.
patent: 4707693 (1987-11-01), Hessel
patent: 5051946 (1991-09-01), Cubranich et al.

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