Transmission device, control device, and transmission method

Patent metadata

Field	Value
Publication number	US-2020228228-A1
Application number	US-202016733789-A
Country	US
Kind code	A1
Filing date	Jan 3, 2020
Priority date	Jan 11, 2019
Publication date	Jul 16, 2020
Grant date	—

Abstract

A transmission device includes 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, 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, the second optical signal being generated based on the averaged second data signal.

First claim

What is claimed is:

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 throug

Assignees

• Fujitsu Ltd

Inventors

• Oyama Tomofumi

Classifications

• H04J14/0257 Primary

  Wavelength assignment algorithms · CPC title

• H04J14/0267

  Optical signaling or routing · CPC title

• H04J14/0224

  Irregular wavelength spacing, e.g. to accommodate interference to all wavelengths · CPC title

• H04L25/4904

  using self-synchronising codes, e.g. split-phase codes · CPC title

• H04L25/4919

  using balanced multilevel codes (H04L25/4927 takes precedence) · CPC title