Patent ID: 6643259
Filing Date: 2003-11-04
Classification: H04L

Abstract:
In a data network, a method for optimizing data transfer from a first network device to a second network device, the method comprising the steps of:determining whether data is to be transferred between a higher layer of a protocol stack on the first network device to a higher layer of a protocol stack on the second network device at a constant bitrate, and if so, ascertaining a roundtrip delay time for data transfer between the first network device and the second network device in a lower layer of the protocol stack on the first network device, wherein the roundtrip delay time is a measure of congestion in the data network, computing a maximum congestion window in response to the constant bitrate multiplied by the roundtrip delay time, obtaining a congestion window value from a congestion control process in the lower layer of the protocol stack on the first network device, wherein the congestion control process regulates the amount of data that is passed from the higher layer of the protocol stack to the lower layer of the protocol stack, and transferring an amount of data from the higher layer of the protocol stack on the first network device to the lower layer of the protocol stack on the first network device equal to a minimum of the congestion window value and the maximum congestion window.