Resizing existing traffic flow in optical transport network
US9118585B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2011 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Dec 25, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L47/35
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In an optical transport network a traffic flow comprises data grouped into a number of resizable data units, encapsulated by optical transport frames, each having a frame overhead. A rate of the traffic flow is changed by changing the data unit overhead and changing at the source node the frame overhead to indicate a change in rate of an optical signal carrying the traffic flow. An optical transmission part is tuned to transmit at the new rate, and at any intermediate nodes along the route the indication of the change in rate is detected in the frame overhead so that the traffic flow on a next optical link is transmitted at the new rate. Thus optical bandwidth allowed for enlarging the data units, can be saved, and electrical processing of data units at the nodes can be simplified, reducing power consumption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.