Patent ID: 8391711
Filing Date: 2013-03-05
Classification: H04B,H04J

Abstract:
1. An optical relay system, which relays an optical signal by wavelength division multiplexing, comprising: a plurality of relay devices each of which relays the optical signal; and a network control device which controls each of the plurality of relay devices, wherein the regenerative repeater allocation management section is configured to, in the regenerative repeater allocation processing: reference the deterioration degree retaining section and the threshold value retaining section, for each of the signal IDs, to extract the relay device ID associated with the deterioration degree equal to or higher than the threshold value from the deterioration degree retaining section when the relay device that has notified the deterioration degree equal to or higher than the threshold value exists; identify the relay device IDs of the relay devices existing at an upstream of the relay device having the extracted relay device ID on the relay path of the optical signal corresponding to the each of the signal IDs from within the relay path retaining section; select the relay device ID of the relay device comprising an unused regenerative repeater among the identified relay device IDs from within the equipment information retaining section; and transmit, to the relay device corresponding to the selected relay device ID, the regeneration instruction comprising the signal ID of the optical signal having the deterioration degree notified as being equal to or higher than the threshold value.