Path selecting method and apparatus
US9215029B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2013 |
| Grant date | Dec 15, 2015 |
| Priority date | — |
| Expiry date | Feb 5, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/62
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present invention disclose a path selecting method and apparatus. The method includes: computing an end-to-end path for a newly added service according to network topology and a wavelength constraint, and assigning a wavelength to the path; computing performance of each existing service and performance of the newly added service in a network according to physical impairment information collected in the network, where the physical impairment information includes a gain reference spectrum of each optical amplifier in the network; and performing impairment check on performance of each service, and performing path selection for the newly added service according to a result of the impairment check. The apparatus includes a path computation module, a performance computation module and an impairment check module. According to the embodiments, efficiency of network update or rerouting is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.