Patent ID: 9014554
Filing Date: 2015-04-21
Classification: H04B,H04J,H04L

Abstract:
1. A method, comprising: sending, from a first optical device towards a second optical device over an optical transport network, a sequence of request frames includes a plurality of request frames; receiving, by the second optical device, each frame of the sequence of request frames; for each particular request frame of the sequence of request frames, sending, by the second optical device towards the first optical device over the optical transport network, a particular response frame after imposing a variable delay after receiving said particular request frame and before adding a delay measurement marker to a frame to create the particular response frame; receiving, by the first optical device, each said particular response frame; and processing different pairs of corresponding said request frames and said response frames to calculate a one-way delay measurement between the first optical device and the second optical device; wherein said processing different pairs includes identifying a frame slip within said received response frames, and adjusting the one-way delay measurement by an offset value determined based on said identified frame slip within said received response frames.