US 9,813,176 B2
Method and apparatus for forming and processing data units
Sergio Lanzone, Genoa (IT); and Orazio Toscano, Genoa (IT)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 13/807,571
Filed by Sergio Lanzone, Genoa (IT); and Orazio Toscano, Genoa (IT)
PCT Filed Aug. 23, 2010, PCT No. PCT/EP2010/062266
§ 371(c)(1), (2), (4) Date Dec. 28, 2012,
PCT Pub. No. WO2012/000565, PCT Pub. Date Jan. 5, 2012.
Claims priority of application No. 10167470 (EP), filed on Jun. 28, 2010.
Prior Publication US 2013/0107894 A1, May 2, 2013
Int. Cl. H04J 3/14 (2006.01); H04J 3/16 (2006.01); H04J 3/06 (2006.01)
CPC H04J 3/14 (2013.01) [H04J 3/1652 (2013.01); H04J 3/0647 (2013.01); H04J 3/167 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method of forming a higher order data unit in an Optical Transport Network (OTN), comprising payload data and overhead data, from a plurality of lower order data units, comprising the steps of:
forming, by a first network node, the payload of the higher order data unit in the OTN by combining payload data from a respective payload area of each of the plurality of lower order data units; and
forming, by the first network node, overhead data of the higher order data unit in the OTN, the overhead data comprising clock quality information relating to a plurality of clocks, each of the plurality of clocks associated with a respective one of the plurality of lower order data units, wherein forming the overhead data comprises:
for each of the plurality of clocks associated with a respective one of the plurality of lower data units, inserting corresponding clock quality information into a payload structure identifier in a frame of at least one reserved portion of an overhead data portion of the higher order data unit in the OTN.