Patent ID: 9712417
Date: 2017-07-18
CPC Classifications: H04B,H04J,H04L

Claim:
1. A method for collision control during delay measurements in optical transport networks, the method comprising: at an optical transport network (OTN) node processing optical data units (ODU) respectively corresponding to different domains of an OTN associated with the OTN node, scheduling a plurality of time slices in a time window, wherein each of the time slices corresponds to a delay measurement cycle during which delay measurements are performed; adding a first delay measurement cycle to a first time slice in the time slices, wherein the first delay measurement cycle is associated with a first ODU and a first delay measurement layer of the first ODU, wherein, when the first delay measurement cycle is added to the first time slice, the first time slice does not already include a delay measurement cycle associated with the first ODU; and successively performing the delay measurements in each delay measurement cycle corresponding to each successive time slice in the time window, including setting a delay measurement source to a delay measurement sink during the delay measurement cycle upon completion of each delay measurement.