Time synchronization method and system, and node device
US9184860B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2012 |
| Grant date | Nov 10, 2015 |
| Priority date | — |
| Expiry date | Jan 8, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W56/001
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present disclosure discloses a time synchronization method. In the method, a first node sends a first time packet at a first time over a first working wavelength; a second node receives the first time packet at a second time. The first node sends a second time packet at a third time over a second working wavelength. The second node receives the second time packet at a fourth time; calculates an absolute time deviation between the second node and the first node according to the first time, the second time, the third time, the fourth time, a first signal transmission rate corresponding to the first working wavelength, and a second signal transmission rate corresponding to the second working wavelength, and synchronizes the local time between the second node and the first node. Further, a time synchronization system and a node device are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.