Transmission device, control device, and transmission method

1. A transmission device that transmits an optical signal, comprising:

a first signal processing circuit configured to average transmission quality of a first data signal based on a third data signal;

a second signal processing circuit configured to average transmission quality of a second data signal based on a fourth data signal; and

a processor configured to allocate a channel in a transmission path that transmits the first data signal and a channel in a transmission path that transmits the second data signal, based on a first index value indicating transmission quality of a first optical signal in the transmission path through which the first optical signal is transmitted, the first optical signal being generated based on the averaged first data signal and a second index value indicating transmission quality of a second optical signal in the transmission path through which the second optical signal is transmitted, the second optical signal being generated based on the averaged second data signal.

2. The transmission device according to claim 1 , wherein

the processor allocates the channel in the transmission path that transmits the first data signal and the channel in the transmission path that transmits the second data signal, based on the first index value and the second index value, so that a difference in transmission quality between the first and second optical signals is reduced.

3. The transmission device according to claim 1 , further comprising:

a first optical modulator configured to generate the first optical signal having a predetermined wavelength, based on the first data signal outputted from the first signal processing circuit; and

a second optical modulator configured to generate the second optical signal having a predetermined wavelength, based on the second data signal outputted from the first signal processing circuit, wherein

the processor allocates a wavelength for transmitting the first data signal and a wavelength for transmitting the second data signal,

the first optical modulator generates the first optical signal having the wavelength allocated to the first data signal, and

the second optical modulator generates the second optical signal having the wavelength allocated to the second data signal.

4. The transmission device according to claim 1 , further comprising:

the transmission path is a multicore fiber having a plurality of cores,

the transmission device further comprising a switch configured to switch between a core for transmitting the first optical signal and a core for transmitting the second optical signal,

the processor allocates a core for transmitting the first data signal and a core for transmitting the second data signal, and

the switch outputs the first and second optical signals to the allocated cores, respectively.

5. The transmission device according to claim 1 , further comprising:

the transmission path is a multimode fiber for transmitting in a plurality of propagation modes,

the transmission device further comprises a switch configured to switch between a propagation mode for transmitting the first optical signal inputted to a first port and a propagation mode for transmitting the second optical signal,

the processor allocates a propagation mode for transmitting the first data signal and a propagation mode for transmitting the second data signal, and

the switch outputs the first and second optical signals so that the optical signals are propagated in the allocated propagation modes, respectively.

6. The transmission device according to claim 1 , further comprising:

the processor acquires the index value from a reception device that receives the first optical signal and the second optical signal, respectively.

7. The transmission device according to claim 1 , further comprising:

the first signal processing circuit unitary transforms the third data signal and the first data signal, and

the first signal processing circuit unitary transforms the fourth data signal and the second data signal.

8. The transmission device according to claim 1 , further comprising:

the processor performs a process of

allocating the channel in the transmission path that transmits the first data signal and the channel in the transmission path that transmits the second data signal, based on the first index value and the second index value when the transmission quality is not averaged by the first signal processing circuit and the second signal processing circuit, and

changing the channel in the transmission path that transmits the first data signal and the channel in the transmission path that transmits the second data signal, based on the first index value and the second index value when the transmission quality is averaged by the first signal processing circuit and the second signal processing circuit.

9. The transmission device according to claim 8 , wherein

the processor increases the averaging frequency of the first signal processing circuit when the first index value does not meet a predetermined standard.

10. The transmission device according to claim 9 , wherein

the processor changes the channel to be allocated to the first optical signal when the first index value when the transmission quality is averaged by the first signal processing circuit does not meet the predetermined standard and the frequency of averaging the transmission quality of the optical signal has reached its upper limit.

11. A control device that controls a transmission device including a first signal processing circuit for averaging transmission quality of a first data signal based on a third data signal and a second signal processing circuit for averaging transmission quality of a second data signal based on a fourth data signal, comprising:

a memory; and

a processor configured to allocate a channel in a transmission path that transmits the first data signal and a channel in a transmission path that transmits the second data signal, based on a first index value indicating transmission quality of a first optical signal in the transmission path through which the first optical signal is transmitted, the first optical signal being generated based on the averaged first data signal and a second index value indicating transmission quality of a second optical signal in the transmission path through which the second optical signal is transmitted, the second optical signal being generated based on the averaged second data signal.

12. The control device according to claim 11 , wherein

the processor allocates the channel in the transmission path that transmits the first data signal and the channel in the transmission path that transmits the second data signal, based on the first index value and the second index value, so that a difference in transmission quality between the first and second optical signals is reduced.

13. A transmission method for transmitting an optical signal, comprising:

averaging transmission quality of a first data signal based on a third data signal;

averaging transmission quality of a second data signal based on a fourth data signal; and

allocating a channel in a transmission path that transmits the first data signal and a channel in a transmission path that transmits the second data signal, based on a first index value indicating transmission quality of a first optical signal in the transmission path through which the first optical signal is transmitted, the first optical signal being generated based on the averaged first data signal and a second index value indicating transmission quality of a second optical signal in the transmission path through which the second optical signal is transmitted, the second optical signal being generated based on the averaged second data signal.

14. The transmission method according to claim 13 , wherein

the allocating a channel includes

allocating the channel in the transmission path that transmits the first data signal and the channel in the transmission path that transmits the second data signal, based on the first index value and the second index value, so that a difference in transmission quality between the first and second optical signals is reduced.