Hitless protection for packet based digitized clock distribution
US11777628B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2021 |
| Grant date | Oct 3, 2023 |
| Priority date | — |
| Expiry date | Feb 9, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2212/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system includes a first module with a first clock; a second module with a second clock; and an Ethernet network interconnecting the first module and the second module by N Ethernet paths, N≥2; wherein the first module is configured to provide timestamps encapsulated in replicated Ethernet packets to the second module over each of the N Ethernet paths for redundancy. The first module can be configured to obtain timestamps from a first clock with each timestamp having a sequence identifier, replicate each timestamp and its sequence identifier, and encapsulate each replicated timestamp and its sequence identifier in an Ethernet packet and transmit each Ethernet packet over one of the N Ethernet paths. The second module can be configured to receive Ethernet packets over the N Ethernet paths; and utilize a first Ethernet packet with a given sequence identifier for synchronization of the second clock with the first clock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.