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Method, system and article for improved TCP performance during packet reordering

  • US 20050036511A1
  • Filed: 08/14/2003
  • Published: 02/17/2005
  • Est. Priority Date: 08/14/2003
  • Status: Active Grant
First Claim
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1. A method 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, said method comprising the steps of:

  • receiving a predetermined threshold number of first acknowledgements requesting a data packet be transmitted over the network connection operating in a first congestion state;

    in response to receiving the predetermined threshold number of first acknowledgements, transmitting the requested data packet over the network connection from the sender to the receiver;

    receiving a second acknowledgement indicating that the requested data packet has been received by the receiver;

    calculating the difference between the time that the second acknowledgement was received and the time that the requested data packet was transmitted;

    setting the congestion state of the network connection to the first congestion state, if the difference is less than a threshold round-trip-time, wherein the threshold round-trip-time is a minimum round-trip-time for a data packet over the network connection between the sender and the receiver; and

    setting the congestion state of the network connection to a second congestion state, if the difference is greater than the threshold round-trip-time, wherein the second congestion state is less than the first congestion state.

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