Time frame switching method using time frame labels and a common time reference
US6982979B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2001 |
| Grant date | Jan 3, 2006 |
| Priority date | — |
| Expiry date | Dec 13, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0045
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A time frame switching method and system of data units that utilize a time frame labels and a common time reference (CTR), which is divided into a plurality of contiguous periodic time frames. The system is designed to operate with high-speed wavelength division multiplexing (WDM) links. The plurality of data units that are contained in each of the time frames are forwarded in a pipelined manner through the network switches, and can be switched from any incoming WDM channel to any subset of outgoing WDM channels responsive to the time frame labels and the common time reference. The combination of time frame labels and CTR can be further used for protection when a failure occurs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.