A Method for Detecting Timing References Affected by a Change in Path Delay Asymmetry Between Nodes in a Communication Network

摘要

A method for detecting a timing reference affected by a change in path delay asymmetry in a communications network comprising a master node having a master clock and a plurality of slave nodes each having a respective slave clock is provided. The method comprises: determining that a first timing reference received by a first slave node indicates a time correction to its slave clock greater than a time correction threshold; determining whether one or more other slave nodes have received a timing reference indicating a time correction to their slave clock greater than a time correction threshold; and determining whether the first timing reference is affected by a change in path delay asymmetry based on the determining of whether one or more other slave nodes have received a timing reference indicating a time correction to their slave clock greater than a time correction threshold. Apparatus and a computer program for detecting a timing reference affected by a change in path delay asymmetry in a communications network are also provided.