| 摘要 |
<p>The present invention relates to the technical field of Wavelength Switched Optical Network (WSON) wavelength control, and in particular relates to a WSON-based wavelength-continuity constraint reduction method. In the WSON, after receiving a request for calculating route according to an appointed wavelength, a routing module calculates a path using a traditional way first, if the calculation succeeds, the path calculation is over, otherwise the routing module performs a wavelength selection path calculation; the wavelength selection path calculation comprises a shared wavelength path calculation and multi-layer graph path calculation; the routing module performs the shared wavelength path calculation first, if the calculation succeeds, the path calculation is over, and if the shared wavelength path calculation fails, the routing module performs the multi-layer graph path calculation. The WSON-based wavelength-continuity constraint reduction method in the present invention is capable of reducing the wavelength-continuity constraint in the wavelength-switching-free WSON, the wavelength conflict during the construction of an optical channel and the connection blocking rate.</p> |
