| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve resource utilization efficiency in an optical network that allocates resources to paths by using frequency slots. <P>SOLUTION: In an optical network comprising link-connected variable bandwidth communication device groups, when a network control device determines that there is no route having a free frequency slot to be allocated to a required path, the control device performs a path relocation process. In the path relocation process, the control device extracts one route from routes available on the optical network as a route of the required path, extracts a relocation target path to which at least one frequency slot has been allocated from the frequency slots required for the path on the extraction route, determines whether the relocation target path is available or not for a relocation to another route different from the route on which the path is established, performs such relocation if available, and allocates the frequency slot released by the relocation to the required path. <P>COPYRIGHT: (C)2013,JPO&INPIT |
