Extending path computation element protocol to accommodate routing and wavelength assignment in wavelength switched optical networks
US8290366B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2008 |
| Grant date | Oct 16, 2012 |
| Priority date | — |
| Expiry date | May 4, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0086
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A network component comprising at least one processor configured to implement a method comprising transmitting a request to compute a routing assignment, a wavelength assignment, or both for a signal in a wavelength switched optical network, wherein the request comprises a lightpath constraint and wherein the request is transmitted using a path computation element protocol. Also disclosed is a network comprising a first path computation element (PCE) and a path computation client (PCC) in communication with the PCE, wherein the PCC is configured to send a request to and receive a reply from the PCE using a PCE protocol, wherein the request comprises a lightpath constraint. Included is a method comprising sending a discovery advertisement to the at least one PCE that calculates a wavelength assignment, receiving a response comprising a PCE capability information from the PCE, wherein the request and the reply are communicated via a PCE protocol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.