COMMUNICATION SYSTEM, STATION-SIDE OPTICAL LINE TERMINATING APPARATUS, USER-SIDE OPTICAL LINE TERMINATING APPARATUS, CONTROL APPARATUS, AND COMMUNICATION METHOD

摘要

A communication system in which a plurality of user-side optical line terminating apparatuses (Optical Network Units, hereinafter referred to as ONUs) and station-side optical line terminating apparatus (Optical Line Terminal, hereinafter referred to as OLT) are connected with a common optical fiber. The ONUs each includes: an ONU side optical transceiver having a transmitting function capable of being stopped and waked in a power saving mode to reduce power consumption; and an ONU control device configured to stop the transmitting function of the ONU side optical transceiver in a period designated by the OLT via the ONU side optical transceiver. The OLT includes: an OLT side optical transceiver connected to the optical fiber; and an OLT control device configured to designate the period the ONU stops the transmitting function of the ONU side optical transceiver to the ONU via the OLT side optical transceiver.