Patent ID: 7305486

Claim:
A method for controlling a transmission of a data stream from a sending node to a receiving node in a data communication network, the method comprising: (a) initially transmitting first information defining a begin and an end of a first unique range of data from a receiving node to a sending node, said first information authorizing transmission of a first quantity of data between the defined begin and end from said sending node; (b) transmitting data of said data stream defined by said first information from a buffer disposed at said sending node to said receiving node; (c) transmitting second information defining a begin and an end of a second unique range of data from said receiving node to said sending node when an event occurs, said second information authorizing transmission of a second quantity of data between the defined begin and the end from said sending node; and (d) releasing at least a portion of said buffer at the sending node corresponding to said first unique range of data on receiving said second information.