Wavelength path switching node apparatus and wavelength path allocation method
US7796884B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2004 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | Jul 16, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0083
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A wavelength path switching node apparatus is provided that improves the utilization efficiency of wavelength resources by allocating wavelength paths by following traffic variations in packet units. A node apparatus on the wavelength path start point side includes: a packet distributing section that stores input packets in a buffer, fetches the packets from the buffer and distributes to an initial path and additional paths; a control section that allocates the additional paths based on distribution states of the packet units; and an optical switch that switches wavelength paths based on this control. A node apparatus on the wavelength path end point side includes: a monitoring section that monitors packets distributed to the initial path and the additional paths; a control section that allocates the additional paths based on distribution states of the packet units obtained by this monitoring; and an optical switch that switches wavelength paths based on this control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.