US 2014/0193150 A1 · COMMUNICATION SYSTEM, STATION-SIDE COMMUNICATION DEVICE, USER-SIDE COMMUNICATION DEVICE, COMMUNICATION METHOD, AND CONTROL DEVICE

Abstract

An OLT includes an OLT control unit that generates a control signal for controlling a power saving operation of an ONU by specifying a different idle period with respect to a first power saving operation in which an optical receiver is operated while an optical transmitter of the ONU is controlled to a power saving state and a second power saving operation for controlling the optical transmitter and the optical receiver to the power saving state, and a station-side transmitter that transmits the control signal generated by the OLT control unit to the ONU. The ONU includes an ONU control unit that receives the control signal via the optical receiver to selectively perform the first power saving operation and the second power saving operation based on the idle period specified by the control signal.

Claims27

Dependent claims

A communication system comprising a station-side communication device (hereinafter, OLT) and a user-side communication device (hereinafter, ONU), in which the ONU communicates with the OLT via a user-side transmitter and a user-side receiver connected to a communication line, wherein

the OLT includes
an OLT control unit that generates a control signal for controlling a power saving operation of the ONU by specifying a different idle period with respect to a first power saving operation in which an optical receiver is operated while an optical transmitter of the ONU is controlled to a power saving state and a second power saving operation in which the user-side transmitter and the user-side receiver are controlled to a power saving state, and
a station-side transmitter that transmits the control signal generated by the OLT control unit to the ONU, and
the ONU includes
an ONU control unit that receives the control signal via the user-side receiver to selectively perform the first power saving operation and the second power saving operation based on the idle period specified by the control signal.

2 more elements

A user-side communication device that communicates with a station-side communication device based on a control signal transmitted from the station-side communication device, the user-side communication device comprising:

a receiver that receives a control signal related to a power saving operation from the station-side communication device, and can shift to a power saving state where power consumption is reduced by halting a part or all of a receiving function;
a transmitter that transmits a transmission signal to the station-side communication device and can shift to a power saving state where power consumption is reduced by halting a part or all of a transmitting function;
and
a control unit that selects a power saving period to be used from a plurality of power saving periods based on the control signal received by the receiver, and controls at least one of the receiver and the transmitter to the power saving state based on the selected power saving period.

1 more element

A communication method used in a communication system including a station-side communication device (hereinafter, OLT) and a user-side communication device (hereinafter, ONU), in which the OLT controls a first power saving operation of the ONU and a second power saving operation different from the first power saving operation, the communication method comprising:

a step at which the OLT transmits a first power saving period related to the first power saving operation of the ONU and a second power saving period related to the second power saving operation to the ONU;
a step at which the ONU receives a control signal transmitted from the OLT;
a step at which the ONU determines whether to perform a power saving operation;
and
a step at which the ONU performs the first power saving operation in the first power saving period, and the second power saving operation in the second power saving period, depending on the determination result.

2 more elements

Dependencies are inferred from the claim text.

Communication system, station-side communication device, user-side communication device, communication method, and control device

Life of this patent

Communication system, station-side communication device, user-side communication device, communication method, and control device

Life of this patent

Abstract

Claims27