Lightpath segmentation system and method in a generalized multi-protocol label switching network
US7233743B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2002 |
| Grant date | Jun 19, 2007 |
| Priority date | — |
| Expiry date | Aug 18, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0088
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A lightpath segmentation system and method for use in a GMPLS network is described. In one embodiment, lightpaths are divided into segments according to the distribution of the wavelength-converter-equipped optical switches, or nodes, within a WDM network. As the number of hops within the segment increases, a lightpath segmentation probability increases. When a wavelength-converter-equipped node receives an LSP Request message, it calculates the LPSP and, if the LPSP exceeds a threshold, the node sets up a lightpath between itself and the ingress node or a previous upstream wavelength-converter-equipped node, if the lightpath has already been segmented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.