System and method for dynamic wavelength assignment in wavelength division multiplex ring networks
US7286759B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 2003 |
| Grant date | Oct 23, 2007 |
| Priority date | — |
| Expiry date | Dec 15, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0086
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
System and method for dynamically assigning wavelengths wavelength division multiplex (“WDM”) ring networks is described. In one embodiment, the invention comprises a method for dynamic wavelength assignment on a ring in a WDM network comprising, for each new requested traffic flow from a source node to a destination node on the ring, for each segment on a path around the ring between the source and destination nodes, classifying the new requested traffic flow into one of a set of spatial relationship types for each existing wavelength; determining a corresponding number of optical-to-electrical and electrical-to-optical (“OEO”) interfaces needed for each spatial relationship type selected for each segment; determining the total number of OEO interfaces needed for the entire path between the source and destination nodes along the ring; and selecting the existing wavelengths that minimize the OEO interfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.