Patent ID: 7653308
Filing Date: 2010-01-26
Classification: H04J

Abstract:
1. A path routing computation method in an optical communication network including a wavelength convertible subnetwork in which paths are connected in the form of a mesh, a first wavelength inconvertible subnetwork having a starting point node, and a second wavelength inconvertible subnetwork having an end point node, the first and second wavelength inconvertible subnetworks being connected via the wavelength convertible subnetwork, wherein out of the nodes constituting the first and second wavelength inconvertible subnetworks, a node having a port connected to the wavelength convertible subnetwork is defined as a border node, the path routing computation method comprising: obtaining, for the first wavelength inconvertible subnetwork, a path from the starting point node to a border node in the first subnetwork; and obtaining, for the second wavelength inconvertible subnetwork, a path from the end point node to a border node in the second wavelength inconvertible subnetwork.