Patent ID: 8792380

Claim:
A method for indicating one-way latency in a data network, with continuous clock synchronization, between first and second nodes having clocks that are not synchronized with each other, comprising: executing a continuous synchronisation session by repetitively sending predetermined synchronization messages from the first node to the second node and from the second node to the first node, calculating a round trip time for each message at the first node, updating a synchronization point if the calculated round trip time is smaller than a previously calculated round trip time, storing the updated synchronization points of a synchronization window, and calculating a virtual clock from the updated synchronization points of said synchronization window, and executing a measurement session to determine the one-way latency of said network between said first node and said second node by collecting multiple measurements of one-way latency between said first and second nodes using the virtual clock, and generating a latency profile by interpolating said multiple measurements.