TCP Extended Fast Recovery and Segment Timing
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United States of America Patent
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N/A
Issued Date -
Feb 26, 2015
app pub date -
Oct 30, 2013
filing date -
Aug 20, 2013
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
When in Fast Recovery, Extended Fast Recovery operation starts a timer on the retransmission of each packet. The time expires in one adjusted round trip time. If there has not been an acknowledgement for the retransmitted packet and the Extended Fast Recovery timer expires, it is assumed that the retransmitted packet was lost and must be retransmitted again. Extended Fast Recovery operation keeps retransmitting the packet, once every adjusted round trip time, until an acknowledgement is received or the slow recovery timer expires. Segment Timing is an addition to Extended Fast Recovery where every sent packet is timed separately from the time of first transmission, not just retransmitted packets.
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