Method and device for migrating data traffic from an existing optical WDM transmission system to a new optical WDM transmission system
US11233564B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2021 |
| Grant date | Jan 25, 2022 |
| Priority date | — |
| Expiry date | May 10, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/40
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method for migrating data traffic from an existing optical WDM transmission system to a new optical WDM transmission system, the existing optical WDM transmission system using a first optical transmission band and the new optical WDM transmission system being capable of using a second optical transmission band. The second optical transmission band at least partially includes the first optical transmission band and a further extension band that does not overlap with the first optical transmission band, the method including the steps of. According to the invention, a migration filter device is used in order to connect, during a migration phase, the network nodes of the existing system and the network nodes of the new system to the network paths that have been used by the existing system. During the migration phase, both systems are operated in parallel, with the new system using the extension band only. In this way, during the migration phase, the data traffic handled by the existing system can stepwise be switched to the new system. After all data traffic has been switched to the new system, the existing system can be deinstalled. The migration filter devi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.