Patent ID: 8331537

Claim:
A method for managing a line topology, comprising: obtaining an actual transfer function of a line by performing one or more line tests; estimating a line diameter and a length of a bridge tap of the line and a line diameter and a length of a trunk line of the line according to the actual transfer function of the line and a transfer function of a bridge tap model; obtaining a transfer function of a line model with a position parameter of the bridge tap according to the estimated line diameters and lengths of the bridge tap and the trunk line, respectively; estimating a position of the bridge tap by comparing an error between the actual transfer function and the transfer function of the line model with the position parameter of the bridge tap; and generating a topology of the line according to the estimated line diameters and lengths of the trunk line and the bridge tap and the position of the bridge tap; wherein before the estimating the line diameter and the length of the bridge tap according to the actual transfer function of the line and the transfer function of the bridge tap model, the method further comprising: performing a noise canceling process of the obtained actual transfer function of the line, wherein the noise canceling process comprising at least one of: performing an averaging process on the actual transfer function of the line obtained based on a plurality of tests to cancel noise; performing a median filtering process on the actual transfer function of the line within a filtering window to cancel noise; and performing a mean filtering process on the actual transfer function of the line within the filtering window to cancel noise.