Methods of time synchronization in communications networks
US9686034B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2015 |
| Grant date | Jun 20, 2017 |
| Priority date | — |
| Expiry date | Jun 23, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0061
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method of providing a path delay asymmetry for time synchronization between a master clock at a first client node and a slave clock at a second client node. The method comprises: mapping a first time protocol signal (TPS) carrying master clock time protocol data (TPD) onto a first signal; determining a forward mapping delay (dmf); mapping a second TPS carrying slave clock TPD onto a second signal; determining a reverse mapping delay (dmr); applying FEC to the first signal, determining a forward FEC delay (dfecf); applying FEC to the second signal; determining a reverse FEC delay (dfecr); providing dmf, dmr, dfecf and dfecr to a calculation element; calculating a path delay asymmetry in dependence on dmf, dmr, dfecf and dfecr; and providing it to a time protocol client at the second client node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.