Method, system and article for improved TCP performance...

Details Method, system and article for improved TCP performance... Method, system and article for improved TCP performance...

2008-04-11

2010-06-22

Ngo, Ricky (Department: 2464)

Multiplex communications

Data flow congestion prevention or control

Flow control of data transmission through a network

C709S235000

Reexamination Certificate

active

07742419

ABSTRACT:
TCP congestion avoidance is implemented upon retransmission of a packet and is reverted back to the original congestion state upon receipt of an early acknowledgement (ACK), indicating reordering of packets, thereby eliminating a needless restriction on TCP bandwidth. Upon receiving an ACK to a retransmitted packet, it is determined if the ACK resulted from receipt of the original reordered packet or the retransmitted packet, based on the arrival time of the ACK at the sender. If the round-trip-time (RTT) for the retransmitted packet is much lower than the average or current calculated RTT for the network link between sender and receiver, then the retransmission occurred as a result of a reordering event, and the congestion window is restored back to its value prior to the retransmission, thereby permitting the network link to continue operating at its original increased throughput.

REFERENCES:
patent: 7046631 (2006-05-01), Giroux et al.
patent: 9200134279 (2000-05-01), None
patent: 92002534907 (2002-10-01), None

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