Relay apparatus, optical access system and relay method
Provided a relay device that performs relay among a plurality of optical communication devices that perform communication using at least time division multiplexing, the device including a data length acquisition unit configured to acquire information on a data length of an uplink signal transmitted from the optical communication device using the uplink signal, a management control signal generation unit configured to generate a management control signal used for management and control, a management control signal division unit configured to divide the generated management control signal based on the information on the data length of the uplink signal acquired by the data length acquisition unit, and a management control signal superimposition unit configured to superimpose the divided management control signal on the uplink signal and transfers the superimposed signal to another optical communication device.
1 . A relay device that performs relay among a plurality of optical communication devices that perform communication using at least time division multiplexing, the device comprising:
a data length acquisition unit configured to acquire information on a data length of an uplink signal transmitted from an optical communication device using the uplink signal;
a management control signal generation unit configured to generate a management control signal used for management and control;
a management control signal division unit configured to divide the generated management control signal based on the information on the data length of the uplink signal acquired by the data length acquisition unit; and
a management control signal superimposition unit configured to superimpose the divided management control signal on the uplink signal and transfers the superimposed signal to another optical communication device.
2 . The relay device according to claim 1 , wherein the management control signal division unit divides the management control signal into a size not exceeding a data length indicated by the information on the data length of the uplink signal.
3 . The relay device according to claim 1 or 2 , further comprising
a branching unit configured to branch the uplink signal transmitted from the optical communication device, wherein
the management control signal superimposition unit superimposes the divided management control signal on the uplink signal to which a delay is given on one branched path.
4 . The relay device according to any one of claims 1 to 3 , further comprising
a user information acquisition unit configured to acquire transmission source information indicating a transmission source of the uplink signal from the uplink signal, wherein the management control signal generation unit is provided for each optical communication device, and
the management control signal division unit divides the management control signal generated by the management control signal generation unit related to a transmission source optical communication device indicated by the transmission source information acquired by the user information acquisition unit based on the information on the data length of the uplink signal.
5 . An optical access system comprising: a first optical communication device that performs communication using at least time division multiplexing; a second optical communication device; and a relay device that performs relay between the first optical communication device and the second optical communication device, wherein
the relay device includes
a data length acquisition unit configured to acquire information on a data length of an uplink signal using the uplink signal transmitted from the first optical communication device,
a management control signal generation unit configured to generate a management control signal used for management and control,
a management control signal division unit configured to divide the generated management control signal based on the information on the data length of the uplink signal acquired by the data length acquisition unit,
a management control signal superimposition unit configured to superimpose the divided management control signal on the uplink signal and transfers the superimposed signal to another optical communication device,
a signal extraction unit configured to extract the divided management control signal superimposed on the uplink signal transferred from the relay device, and
an integration unit configured to integrate the divided management control signals to restore the management control signal.
6 . The optical access system according to claim 5 , further comprising
a management control device configured to manage and control the first optical communication device, wherein
the management control device includes a reception unit configured to receive the uplink signal transferred from the relay device,
the signal extraction unit, and
the integration unit.
7 . A relay method performed by a relay device that performs relay among a plurality of optical communication devices that perform communication using at least time division multiplexing, the method comprising:
acquiring information on a data length of an uplink signal transmitted from the optical communication device using the uplink signal;
generating a management control signal used for management and control;
dividing the generated management control signal based on the acquired information on the data length of the uplink signal; and
superimposing the divided management control signal on the uplink signal and transferring the superimposed signal to another optical communication device.