Patent ID: 9215010
Filing Date: 2015-12-15
Classification: H04B

Abstract:
1. A node device in an optical communication system in which a plurality of the node devices are connected by a plurality of optical fibers, the node device comprising: a first optical transceiver that enters into either a first standby mode or a second standby mode, a startup time from the first standby mode being shorter than a down-time of a communication service in the optical communication system, a startup time from the second standby mode being longer than the startup time from the first standby mode, a power consumption of the first optical transceiver in the second standby mode being lower than a power consumption of the first optical transceiver in the first standby mode; a second optical transceiver that enters into a third standby mode, a startup time from the third standby mode being shorter than the down-time, a power consumption of the second optical transceiver in the second standby mode being larger than the power consumption of the first optical transceiver in the second standby mode, the second optical transceiver not entering a standby mode from which a startup time being larger than the down-time; and a power consumption control unit that preferentially performs a process of setting the second optical transceiver into the third standby mode rather than a process of setting the first optical transceiver into the third standby mode when setting at least one of optical transceivers into a standby mode from which a startup time is shorter than the down-time.