Communication control system, communication control device, and communication control method

Abstract

A communication control system according to the present disclosure comprises: a plurality of optical fibers (10); a detection unit (21) that detects an abnormality in an external environment around the plurality of optical fibers (10), on the basis of optical signals received from each of the plurality of optical fibers (10); a prediction unit (22) that predicts, on the basis of the detected abnormality, the presence or absence of a negative impact of the abnormality on a communication path; and a selection unit (23) that, on the basis of the predicted presence or absence of a negative impact of the abnormality on the communication path, selects a communication path not negatively impacted by the abnormality as a communication path to be used for prescribed communication.

Description

Communication control system, communication control device, and communication control method

[0001] The present disclosure relates to a communication control system, a communication control device, and a communication control method.

[0002] Optical fibers are now installed throughout the country and used as communication routes. To ensure stable communication without interruptions, it is important to select the optimal communication route for a given communication.

[0003] For example, Patent Document 1 describes a technology for selecting a communication path to be used for communication in which data is transmitted from a transmitting terminal to a receiving terminal via multiple repeaters. Specifically, according to the technology described in Patent Document 1, an abnormality in each repeater is predicted based on the transmission quality of each repeater, and a communication path is selected from multiple communication paths after excluding a communication path including a repeater in which an abnormality is predicted.

[0004] International Publication No. 2010 / 061573

[0005] As described above, the technology described in Patent Document 1 can predict that a communication path will be interrupted due to an abnormality caused by deterioration of transmission quality in each repeater. However, the technology described in Patent Document 1 cannot predict that a communication path will be interrupted due to an abnormality in the external environment around the optical fiber (e.g., a landslide, an earthquake, etc.). Therefore, even if a communication path is selected using the technology described in Patent Document 1, there is a problem in that a communication interruption may occur on the selected communication path due to an abnormality in the external environment, making it impossible to continue communication.

[0006] Therefore, in view of the above-mentioned problems, the object of the present disclosure is to provide a communication control system, a communication control device, and a communication control method that are capable of selecting a communication path while taking into account abnormalities in the external environment around the optical fiber.

[0007] A communication control system according to one embodiment includes: a plurality of optical fibers; a detection unit that detects abnormalities in the external environment surrounding the plurality of optical fibers based on optical signals received from each of the plurality of optical fibers; a prediction unit that predicts whether or not the abnormality will affect a communication path based on the detected abnormality; and a selection unit that selects a communication path that will not be affected by the abnormality as a communication path to be used for a specified communication based on the predicted whether or not the abnormality will affect the communication path.

[0008] A communication control device according to one embodiment includes: a detection unit that detects abnormalities in the external environment surrounding a plurality of optical fibers based on optical signals received from each of the plurality of optical fibers; a prediction unit that predicts whether or not the abnormality will affect a communication path based on the detected abnormality; and a selection unit that selects a communication path that will not be affected by the abnormality as a communication path to be used for a specified communication based on the predicted whether or not the abnormality will affect the communication path.

[0009] A communication control method according to one embodiment is a communication control method using a communication control device, and includes: a detection step of detecting an abnormality in the external environment surrounding a plurality of optical fibers based on an optical signal received from each of the plurality of optical fibers; a prediction step of predicting whether or not the abnormality will affect a communication path based on the detected abnormality; and a selection step of selecting a communication path that will not be affected by the abnormality as a communication path to be used for a specified communication based on the predicted whether or not the abnormality will affect the communication path.

[0010] According to the above-described aspects, it is possible to provide a communication control system, a communication control device, and a communication control method that are capable of selecting a communication path in consideration of abnormalities in the external environment around the optical fiber.

[0011] Fig. 1 is a diagram showing an example of the configuration of a communication control system according to embodiment 1. Fig. 2 is a diagram showing an example of a correspondence table held by a detection unit according to embodiment 1. Fig. 3 is a diagram showing a specific example of a communication path selected by a selection unit according to embodiment 1. Fig. 4 is a diagram showing another specific example of a communication path selected by a selection unit according to embodiment 1. Fig. 5 is a flow diagram showing an example of a schematic operation flow of the communication control system according to embodiment 1. Fig. 6 is a block diagram showing an example of the hardware configuration of a computer that realizes a communication control device according to embodiment 1.

[0012] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Note that the following description and drawings have been omitted and simplified as appropriate for clarity of explanation. In addition, in the following drawings, the same elements are given the same reference numerals, and duplicate explanations are omitted as necessary.

[0013] First Embodiment First, an example of the configuration of a communication control system according to the first embodiment will be described with reference to Fig. 1. As shown in Fig. 1, the communication control system according to the first embodiment includes a plurality of optical fibers 10-1 to 10-n (n is an integer of 2 or more) and a communication control device 20. Hereinafter, when it is not necessary to specify which of the optical fibers 10-1 to 10-n is being referred to, it will be simply referred to as "optical fiber 10."

[0014] The optical fiber 10 is laid in a predetermined area. There are no particular limitations on the manner in which the optical fiber 10 is laid. For example, the optical fiber 10 may be laid overhead on a pole such as a utility pole, or may be buried underground.

[0015] The communication control device 20 is a device for selecting a communication path to be used for a predetermined communication, and is realized by, for example, a sensing device such as a Distributed Fiber Optic Sensing (DFOS) device. The predetermined communication is, for example, communication for transmitting data from a transmitting device to a receiving device.

[0016] In the first embodiment, the communication paths that can be selected for use in a given communication are any of the multiple optical fibers 10 and a wireless line that passes through a communication satellite, a base station, or the like.

[0017] The communication control device 20 includes a detection unit 21, a prediction unit 22, and a selection unit 23. A plurality of optical fibers 10 are connected to the detection unit 21. The detection unit 21 transmits pulsed light to each of the plurality of optical fibers 10. The detection unit 21 also receives backscattered light, which is generated as the pulsed light is transmitted through each of the plurality of optical fibers 10, from each of the plurality of optical fibers 10 as an optical signal.

[0018] Here, if an abnormality occurs in the external environment surrounding the optical fiber 10, the vibrations generated by the abnormality are transmitted to the optical fiber 10, and the characteristics (e.g., wavelength) of the optical signal transmitted through the optical fiber 10 change.

[0019] Therefore, the detection unit 21 can detect vibrations transmitted to the optical fiber 10 based on the optical signal received from the optical fiber 10, and can also detect abnormalities that are the cause of the vibrations.

[0020] In addition, based on the time difference between the time when pulsed light is transmitted to the optical fiber 10 and the time when the optical signal is received from the optical fiber 10, the detection unit 21 can identify the location where the optical signal was generated, i.e., the location where the abnormality detected based on the optical signal occurred (the distance of the optical fiber 10 from the communication control device 20).

[0021] The detection unit 21 also stores in advance a correspondence table indicating, for each of the multiple optical fibers 10, the distance from the communication control device 20 on that optical fiber 10 and the latitude / longitude at that distance. An example of the correspondence table is shown in FIG. 2. Therefore, by using the correspondence table shown in FIG. 2, the detection unit 21 can identify the latitude / longitude of the location where an abnormality has occurred. For example, in the example of FIG. 2, if an abnormality has occurred at a position on the optical fiber 10-1 that is a distance 1a from the communication control device 20, the detection unit 21 identifies the location where the abnormality has occurred as a position with latitude / longitude X1a / Y1a.

[0022] The correspondence table does not necessarily have to be held by the detection unit 21. For example, any component inside or outside the communication control device 20 may hold the correspondence table, and the detection unit 21 may read and use the correspondence table.

[0023] In addition, due to an abnormality in the external environment surrounding the optical fiber 10, the vibrations transmitted to the optical fiber 10 have unique vibration patterns that vary in strength, vibration position, and frequency fluctuation progression depending on the type of abnormality.

[0024] Therefore, the detection unit 21 may estimate the type of abnormality in the external environment around the optical fiber 10 based on the vibration pattern of the vibration detected based on the optical signal. The type of abnormality in the external environment is, for example, a landslide, an earthquake, a traffic accident, a flood, a tsunami, a fire, etc.

[0025] Furthermore, the detection unit 21 may use pattern matching or a learning model when estimating the type of abnormality in the external environment around the optical fiber 10. Furthermore, the learning model may be a model including a CNN (Convolutional Neural Network).

[0026] For example, when using pattern matching, the detection unit 21 stores in advance, for each type of abnormality in the external environment, a vibration pattern that occurs when that type of abnormality occurs as a matching pattern.The detection unit 21 then compares the vibration pattern of the vibration detected based on the optical signal with the matching pattern.If there is a matching pattern among the matching patterns whose compatibility with the vibration pattern is equal to or greater than a threshold, the detection unit 21 determines that the type of abnormality in the external environment corresponds to that matching pattern.

[0027] Furthermore, when using a learning model, the detection unit 21 inputs a plurality of pairs of teacher data indicating the type of abnormality in the external environment and the vibration pattern when that type of abnormality occurs, and constructs and stores the learning model in advance. The detection unit 21 then inputs the vibration pattern of the vibration detected based on the optical signal to the learning model. As a result, the detection unit 21 obtains the type of abnormality in the external environment as an output result of the learning model.

[0028] The matching patterns and learning models are not limited to being held by the detection unit 21. For example, any component inside or outside the communication control device 20 may hold the matching patterns and learning models, and the detection unit 21 may read and use the matching patterns and learning models.

[0029] In addition, when the detection unit 21 estimates the type of abnormality in the external environment surrounding the optical fiber 10, it may further estimate the scale of the abnormality in the external environment based on the estimated type of abnormality in the external environment.

[0030] The prediction unit 22 predicts whether or not the abnormality in the external environment will affect the communication path, based on the abnormality in the external environment detected by the detection unit 21. For example, the prediction unit 22 may predict that the communication path including a location where communication interruption may occur due to the abnormality in the external environment will be affected by the abnormality in the external environment.

[0031] Furthermore, when the detection unit 21 estimates the type and scale of the abnormality in the external environment, the prediction unit 22 identifies the range in which communication interruption may occur based on the estimated type and scale of the abnormality in the external environment, and if all or part of the communication path is included in the identified range, it may predict that the communication path will be affected by the abnormality in the external environment.

[0032] The selection unit 23 selects a communication path that is not affected by an abnormality in the external environment as a communication path to be used for a predetermined communication, based on whether or not the communication path is affected by an abnormality in the external environment as predicted by the prediction unit 22.

[0033] 3 and 4, a specific example of a communication path selected by the selector 23 will be described. In the examples of Fig. 3 and Fig. 4, a communication path to be used for communication to transmit data from the transmitter 30 to the receiver 40 is selected. Also, it is assumed that two optical fibers 10-1 and 10-2 are laid between the transmitter 30 and the receiver 40.

[0034] 3, the prediction unit 22 predicts that only the optical fiber 10-1 will be affected by the abnormality in the external environment because the scale of the abnormality in the external environment is small. Therefore, the selection unit 23 selects the optical fiber 10-2, which is not affected by the abnormality in the external environment, as the communication path to be used for communication.

[0035] 4, the prediction unit 22 predicts that both of the optical fibers 10-1 and 10-2 will be affected by the abnormality in the external environment because the abnormality in the external environment is large in scale. Therefore, the selection unit 23 selects, as the communication path to be used for communication, a wireless link via the communication satellite 50, which is not affected by the abnormality in the external environment. However, in the example of FIG. 4, the selection is not limited to a wireless link via the communication satellite 50, and the selection unit 23 may also select a wireless link via a base station (not shown) that is not affected by the abnormality in the external environment.

[0036] Next, an example of a schematic operation flow of the communication control system according to the first embodiment will be described with reference to Fig. 5. As shown in Fig. 5, the detection unit 21 transmits pulsed light to each of the plurality of optical fibers 10 and receives optical signals from each of the plurality of optical fibers 10. Then, the detection unit 21 detects an abnormality in the external environment around the plurality of optical fibers 10 based on the optical signals received from each of the plurality of optical fibers 10 (step S11).

[0037] Next, the prediction unit 22 predicts whether or not the communication path will be affected by the abnormality in the external environment based on the abnormality in the external environment detected by the detection unit 21 (step S12). Thereafter, the selection unit 23 selects a communication path that will not be affected by the abnormality in the external environment as a communication path to be used for predetermined communication based on the influence of the abnormality in the external environment predicted by the prediction unit 22 (step S13).

[0038] As described above, according to the first embodiment, the detection unit 21 detects an abnormality in the external environment surrounding the plurality of optical fibers 10 based on the optical signals received from each of the plurality of optical fibers 10. The prediction unit 22 predicts whether or not the abnormality in the external environment will affect the communication path based on the abnormality in the external environment detected by the detection unit 21. The selection unit 23 selects a communication path that is not affected by the abnormality in the external environment as the communication path to be used for predetermined communication based on the presence or absence of the influence of the abnormality in the external environment predicted by the prediction unit 22 on the communication path.

[0039] Therefore, a communication path to be used for predetermined communication can be selected taking into consideration abnormalities in the external environment around the optical fiber 10. This allows the communication path to be selected while avoiding locations or areas where communication interruptions may occur due to abnormalities in the external environment. As a result, the predetermined communication can be continued without communication interruptions due to abnormalities in the external environment, and the predetermined communication can be realized stably.

[0040] Furthermore, according to the first embodiment, when detecting an abnormality in the external environment, the optical fiber 10, which is also used as a communication path, is used, so there is no need to prepare a dedicated sensor for detecting an abnormality in the external environment, which can reduce costs.

[0041] <Other Embodiments> In the first embodiment described above, only one detector 21 is provided, but this is not limiting. For example, a plurality of detectors 21 may be provided corresponding to a plurality of optical fibers 10, respectively. In this case, the detector 21 may be connected only to the corresponding optical fiber 10, transmit pulsed light to the corresponding optical fiber 10, and receive an optical signal from the corresponding optical fiber 10. Furthermore, the detector 21 may detect only an abnormality in the external environment surrounding the corresponding optical fiber 10, based on the optical signal received from the corresponding optical fiber 10.

[0042] In addition, in the above-mentioned embodiment 1, the selection unit 23 selected a communication path based on whether or not the communication path predicted by the prediction unit 22 is affected by an abnormality in the external environment, but this is not limited to this.

[0043] For example, the selector 23 may determine the communication capacity during communication in a predetermined communication when an abnormality in the external environment is detected by the detector 21. Then, the selector 23 may select a communication path based on the determined communication capacity and whether or not the communication path predicted by the predictor 22 is affected by the abnormality in the external environment. For example, when the communication capacity exceeds the communication capacity of a single optical fiber 10, the selector 23 may select, as the communication path, multiple optical fibers 10 that are not affected by the abnormality in the external environment, or may select a wireless line.

[0044] Alternatively, the selection unit 23 may determine the communication capacity of a predetermined communication. Then, the selection unit 23 may select a communication path based on whether or not an abnormality in the external environment will affect the communication path predicted by the prediction unit 22 and the communication capacity determined above.

[0045] Alternatively, the selector 23 may determine the priority of a predetermined communication when the detector 21 detects an abnormality in the external environment. The selector 23 may then select a communication path based on the influence of the abnormality in the external environment on the communication path predicted by the predictor 22 and the priority determined above. For example, a high priority may be set for communication that requires real-time transmission, and a low priority may be set for communication that does not require real-time transmission. Furthermore, when the priority of the predetermined communication is high, the selector 23 may select an optical fiber 10 that is not affected by an abnormality in the external environment as the communication path, in order to select an optical fiber 10 with a high communication speed. Furthermore, when the priority of the predetermined communication is low, the selector 23 may select a wireless line via a communication satellite with a slow communication speed as the communication path.

[0046] <Hardware Configuration of Communication Control Device According to First Embodiment> Next, with reference to FIG. 6, an example of the hardware configuration of a computer 90 that realizes the communication control device 20 according to the above-described first embodiment will be described.

[0047] 6, the computer 90 includes a processor 91, a memory 92, a storage 93, an input / output interface (input / output I / F) 94, and a communication interface (communication I / F) 95. The processor 91, the memory 92, the storage 93, the input / output interface 94, and the communication interface 95 are connected by a data transmission path for transmitting and receiving data to and from each other.

[0048] The processor 91 is an arithmetic processing device such as a central processing unit (CPU) or a graphics processing unit (GPU). The memory 92 is a memory such as a random access memory (RAM) or a read only memory (ROM). The storage 93 is a storage device such as a hard disk drive (HDD), a solid state drive (SSD), or a memory card. The storage 93 may also be a memory such as a RAM or a ROM.

[0049] The storage 93 stores programs that realize the functions of the components of the communication control device 20. The processor 91 executes each of these programs to realize the functions of the components of the communication control device 20. When executing each of the above programs, the processor 91 may read these programs onto the memory 92 before executing them, or may execute them without reading them onto the memory 92. The memory 92 and storage 93 also serve to store information and data held by the components of the communication control device 20.

[0050] The above-described program can be stored on various types of non-transitory computer-readable media and supplied to a computer (including computer 90). Non-transitory computer-readable media include various types of tangible storage media. Examples of non-transitory computer-readable media include magnetic recording media (e.g., flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (e.g., magneto-optical disks), compact disc-ROMs (CD-ROMs), CD-Recordables (CD-Rs), CD-Rewritables (CD-R / Ws), and semiconductor memories (e.g., mask ROMs, programmable ROMs (PROMs), erasable PROMs (EPROMs), flash ROMs, and RAMs). The program can also be supplied to a computer by various types of transitory computer-readable media. Examples of transitory computer-readable media include electrical signals, optical signals, and electromagnetic waves. The temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire or an optical fiber, or via a wireless communication path.

[0051] The input / output interface 94 is connected to a display device 941, an input device 942, a sound output device 943, etc. The display device 941 is a device that displays a screen corresponding to drawing data processed by the processor 91, such as an LCD (Liquid Crystal Display), a CRT (Cathode Ray Tube) display, or a monitor. The input device 942 is a device that accepts operational inputs from an operator, such as a keyboard, a mouse, or a touch sensor. The display device 941 and the input device 942 may be integrated and realized as a touch panel. The sound output device 943 is a device that outputs sound corresponding to the sound data processed by the processor 91, such as a speaker.

[0052] The communication interface 95 transmits and receives data to and from an external device. For example, the communication interface 95 communicates with the external device via a wired communication path or a wireless communication path.

[0053] Although the present disclosure has been described above with reference to the embodiments, the present disclosure is not limited to the above-described embodiments. Various modifications that can be understood by those skilled in the art can be made to the configuration and details of the present disclosure within the scope of the present disclosure.

[0054] Furthermore, some or all of the above-described embodiments can be described as, but are not limited to, the following supplementary notes. (Supplementary Note 1) A communication control system comprising: a plurality of optical fibers; a detection unit that detects an abnormality in an external environment surrounding the plurality of optical fibers based on an optical signal received from each of the plurality of optical fibers; a prediction unit that predicts whether or not a communication path will be affected by the abnormality based on the detected abnormality; and a selection unit that selects a communication path that will not be affected by the abnormality as a communication path to be used for predetermined communication based on the predicted whether or not the abnormality will be affected by the abnormality. (Supplementary Note 2) The communication control system according to Supplementary Note 1, wherein the detection unit estimates the type and scale of the detected abnormality based on the optical signal, and the prediction unit predicts whether or not the communication path will be affected by the abnormality based on the estimated type and scale of the abnormality. (Supplementary Note 3) The communication control system according to Supplementary Note 1, wherein the selection unit determines a communication capacity during communication in the predetermined communication when the abnormality is detected, and selects a communication path to be used for the predetermined communication based on whether the abnormality is affecting the predicted communication path and the determined communication capacity. (Supplementary Note 4) The communication control system according to Supplementary Note 1, wherein the selection unit determines a communication capacity planned for future communication in the predetermined communication, and selects a communication path to be used for the predetermined communication based on whether the abnormality is affecting the predicted communication path and the determined communication capacity. (Supplementary Note 5) The communication control system according to Supplementary Note 1, wherein the selection unit determines a priority of the predetermined communication when the abnormality is detected, and selects a communication path to be used for the predetermined communication based on whether the abnormality is affecting the predicted communication path and the determined priority. (Supplementary Note 6) The communication control system according to any one of Supplements 1 to 5, wherein the selection unit selects one of the plurality of optical fibers or a wireless line as the communication path to be used for the predetermined communication.(Supplementary Note 7) A communication control device comprising: a detection unit that detects an abnormality in an external environment surrounding a plurality of optical fibers based on an optical signal received from each of the plurality of optical fibers; a prediction unit that predicts whether or not a communication path will be affected by the abnormality based on the detected abnormality; and a selection unit that selects a communication path that will not be affected by the abnormality as a communication path to be used for predetermined communication based on whether or not the predicted communication path is affected by the abnormality. (Supplementary Note 8) The communication control device according to Supplementary Note 7, wherein the detection unit estimates a type and scale of the detected abnormality based on the optical signal, and the prediction unit predicts whether or not the communication path will be affected by the abnormality based on the estimated type and scale of the abnormality. (Supplementary Note 9) The communication control device according to Supplementary Note 7, wherein the selection unit determines a communication capacity during communication in the predetermined communication when the abnormality is detected, and selects a communication path to be used for the predetermined communication based on whether or not the predicted communication path is affected by the abnormality and the determined communication capacity. (Supplementary Note 10) The communication control device according to Supplementary Note 7, wherein the selection unit determines a communication capacity planned for future communication in the predetermined communication, and selects a communication path to be used for the predetermined communication based on whether the abnormality has affected the predicted communication path and the determined communication capacity. (Supplementary Note 11) The communication control device according to Supplementary Note 7, wherein the selection unit determines a priority of the predetermined communication when the abnormality is detected, and selects a communication path to be used for the predetermined communication based on whether the abnormality has affected the predicted communication path and the determined priority. (Supplementary Note 12) The communication control device according to any one of Supplementary Notes 7 to 11, wherein the selection unit selects one of the plurality of optical fibers or a wireless line as the communication path to be used for the predetermined communication.(Supplementary Note 13) A communication control method by a communication control device, comprising: a detection step of detecting an abnormality in an external environment surrounding a plurality of optical fibers based on optical signals received from each of the plurality of optical fibers; a prediction step of predicting whether or not a communication path will be affected by the abnormality based on the detected abnormality; and a selection step of selecting a communication path that will not be affected by the abnormality as a communication path to be used for a predetermined communication based on whether or not the abnormality will be affected on the predicted communication path. (Supplementary Note 14) The communication control method according to Supplementary Note 13, wherein the detection step estimates the type and magnitude of the detected abnormality based on the optical signals, and the prediction step predicts whether or not the abnormality will be affected on the communication path based on the estimated type and magnitude of the abnormality. (Supplementary Note 15) The communication control method according to Supplementary Note 13, wherein the selection step determines a communication capacity in use in the predetermined communication when the abnormality is detected, and selects a communication path to be used for the predetermined communication based on whether or not the abnormality will be affected on the predicted communication path and the determined communication capacity. (Supplementary Note 16) The communication control method according to Supplementary Note 13, wherein in the selection step, a communication capacity planned for future communication in the predetermined communication is determined, and a communication path to be used for the predetermined communication is selected based on whether or not the abnormality has affected the predicted communication path and the determined communication capacity. (Supplementary Note 17) The communication control method according to Supplementary Note 13, wherein in the selection step, a priority of the predetermined communication when the abnormality is detected is determined, and a communication path to be used for the predetermined communication is selected based on whether or not the abnormality has affected the predicted communication path and the determined priority. (Supplementary Note 18) The communication control method according to any one of Supplements 13 to 17, wherein in the selection step, one of the plurality of optical fibers or a wireless line is selected as the communication path to be used for the predetermined communication.

[0055] 10-1 to 10-n Optical fiber 20 Communication control device 21 Detection unit 22 Prediction unit 23 Selection unit 30 Transmission device 40 Reception device 50 Communication satellite 90 Computer 91 Processor 92 Memory 93 Storage 94 Input / output interface 941 Display device 942 Input device 943 Sound output device 95 Communication interface

Claims

1. A plurality of optical fibers; a detection unit that detects an abnormality in an external environment around the plurality of optical fibers based on an optical signal received from each of the plurality of optical fibers; a prediction unit that predicts whether or not the abnormality has an effect on a communication path based on the detected abnormality; a selection unit that selects a communication path that will not be affected by the abnormality as a communication path to be used for predetermined communication based on whether or not the predicted communication path is affected by the abnormality, Communications control system.

2. The detection unit Estimating the type and magnitude of the detected anomaly based on the optical signal; The prediction unit predicting whether or not the abnormality will have an effect on the communication path based on the estimated type and scale of the abnormality; The communication control system according to claim 1 .

3. The selection unit determining a communication capacity during communication in the predetermined communication when the abnormality is detected; selecting a communication path to be used for the predetermined communication based on the presence or absence of the influence of the abnormality on the predicted communication path and the determined communication capacity; The communication control system according to claim 1 .

4. a detection unit that detects an abnormality in an external environment around the plurality of optical fibers based on an optical signal received from each of the plurality of optical fibers; a prediction unit that predicts whether or not the abnormality has an effect on a communication path based on the detected abnormality; a selection unit that selects a communication path that will not be affected by the abnormality as a communication path to be used for predetermined communication based on whether or not the predicted communication path is affected by the abnormality, Communications control device.

5. The detection unit Estimating the type and magnitude of the detected anomaly based on the optical signal; The prediction unit predicting whether or not the abnormality will have an effect on the communication path based on the estimated type and scale of the abnormality; The communication control device according to claim 4.

6. The selection unit determining a communication capacity during communication in the predetermined communication when the abnormality is detected; selecting a communication path to be used for the predetermined communication based on the presence or absence of the influence of the abnormality on the predicted communication path and the determined communication capacity; The communication control device according to claim 4.

7. The selection unit determining a communication capacity for future communication in the predetermined communication; selecting a communication path to be used for the predetermined communication based on the presence or absence of the influence of the abnormality on the predicted communication path and the determined communication capacity; The communication control device according to claim 4.

8. The selection unit determining the priority of the predetermined communication when the abnormality is detected; selecting a communication path to be used for the predetermined communication based on whether or not the abnormality has had an effect on the predicted communication path and the determined priority; The communication control device according to claim 4.

9. The selection unit selecting one of the plurality of optical fibers or a wireless line as a communication path to be used for the predetermined communication; The communication control device according to any one of claims 4 to 8.

10. A communication control method by a communication control device, a detecting step of detecting an abnormality in an external environment around the plurality of optical fibers based on an optical signal received from each of the plurality of optical fibers; a prediction step of predicting whether or not the abnormality has an effect on a communication path based on the detected abnormality; a selection step of selecting a communication path that is not affected by the abnormality as a communication path to be used for a predetermined communication based on whether or not the predicted communication path is affected by the abnormality, Communication control method.