Patent ID: 7385923
Filing Date: 2008-06-10
Classification: H04L

Abstract:
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: in response to receiving at least one first acknowledgement requesting a data packet be retransmitted over the network connection operating in a first congestion state, retransmitting 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 retransmitted; 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.