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AssigneeInternational Business Machines Corporation
InventorsKavitha Vittal Murthy Baratakke, Vinit Jain, Vasu Vallabhaneni, Venkat Venkatsubra
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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.
A data processing system providing improved transport layer performance following packet reordering in a network, said system comprising:
An article of manufacture for improved transport layer performance following packet reordering in a network, wherein the network comprises a network connection between a sender and a receiver and wherein the network connection operates in a congestion state, comprising tangible machine-readable medium including program logic embedded therein that causes control circuitry in a data processing system to perform the steps of:
Dependencies are inferred from the claim text.