USE OF FILTRATION AND ACTIVE SURVEY TO EVALUATE A DATA TRANSFER TRAVEL.

摘要

A method for evaluating an available bandwidth in a data transfer path that transfers data between data communication nodes of a data network, comprising: providing (13) probe packets that travel the data transfer path during operation real-time data transfer path; in response to the path of the data transfer path through said probe packets, and during said real-time operation of the data transfer path, provide estimation data for use in estimating the available bandwidth; and producing (17) an estimate of the available width during said real-time operation of the data transfer path, including applying a Kalman filter operation to said estimation data during said real-time operation of the data transfer path, characterized because said Kalman filter operation uses combination parameters for use in combining said estimation data with current filter status information to produce new filter status information, and in which said application includes supplying said combination parameters for use in said filter operation