Communication monitoring device, communication monitoring method, and program

Abstract

To predict communication congestion that occurs at ground stations.SOLUTION: An acquisition unit acquires a flight plan of an aircraft. A calculation unit calculates a future communication load on a ground station due to communication between the aircraft and the ground station based on the acquired flight plan. A prediction unit predicts communication congestion that will occur at the ground station based on the calculated future communication load on the ground station. An output unit outputs a warning if communication congestion is predicted to occur at the ground station.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to a communication monitoring device, a communication monitoring method, and a program, and more particularly to a communication monitoring device, a communication monitoring method, and a program for monitoring communications between an aircraft and a ground station. [Background technology]

[0002] Due to the globalization of society and the economy, the role played by airports and air traffic is becoming more important every year. Related technologies are provided to support air traffic.

[0003] The air traffic flow control system described in Patent Document 1 searches for aircraft scheduled to arrive at an airport based on flight plan data and requests the aircraft to transmit their flight status.The air traffic flow control system then predicts air traffic in the airspace around the airport after a predetermined time based on the acquired aircraft flight status. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-260000 Summary of the Invention [Problem to be solved by the invention]

[0005] As the number of aircraft in operation increases and the amount of data transmitted per aircraft increases, there are concerns that communication congestion at ground stations may occur, especially in congested airspace.If communication congestion occurs at a ground station, communication between the aircraft and the ground station will be delayed, which may hinder rapid communication between the pilot (aircraft) and air traffic control.

[0006] The present disclosure has been made in view of the above-mentioned problems, and its purpose is to predict communication congestion that will occur at a ground station. [Means for solving the problem]

[0007] A communication monitoring device according to one embodiment of the present disclosure includes an acquisition means for acquiring a flight plan of an aircraft, a calculation means for calculating a future communication load of the ground station due to communication between the aircraft and the ground station based on the acquired flight plan, a prediction means for predicting communication congestion that will occur at the ground station based on the calculated future communication load of the ground station, and an output means for outputting a warning when communication congestion is predicted to occur at the ground station.

[0008] A communication monitoring method according to one aspect of the present disclosure includes a computer acquiring a flight plan for an aircraft, calculating a future communication load of the ground station due to communication between the aircraft and the ground station based on the acquired flight plan, predicting communication congestion that will occur at the ground station based on the calculated future communication load of the ground station, and outputting a warning if communication congestion is predicted to occur at the ground station.

[0009] A program according to one aspect of the present disclosure causes a computer to perform the following processes: acquiring a flight plan for an aircraft; calculating, based on the acquired flight plan, a future communication load of the ground station due to communication between the aircraft and the ground station; predicting communication congestion that will occur at the ground station based on the calculated future communication load of the ground station; and outputting a warning if communication congestion is predicted to occur at the ground station. [Effects of the Invention]

[0010] According to one aspect of the present disclosure, it is possible to predict communication congestion occurring at a ground station. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a diagram illustrating an example of a communication system according to an embodiment. [Figure 2] FIG. 10 is a diagram showing an example of a communication history indicating the number of messages sent and received between a ground station and an aircraft. [Figure 3] FIG. 1 is a diagram illustrating an example of a flight plan for an aircraft. [Figure 4] 10 is a diagram showing an example of a warning output by a communication repeater, indicating the possibility of communication congestion occurring at a ground station. FIG. [Figure 5] 1 is a block diagram showing a configuration of a communication monitoring device according to an embodiment; [Figure 6] 10 is a flowchart illustrating an operation of the communication monitoring device according to an embodiment. [Figure 7] 1 is a block diagram showing a configuration of a communication monitoring device according to an embodiment; [Figure 8] 10 is a flowchart illustrating an operation of the communication monitoring device according to an embodiment. [Figure 9] FIG. 2 is a diagram illustrating an example of a hardware configuration of a communication monitoring device according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present disclosure will be described with reference to the accompanying drawings.

[0013] [Embodiment 1] A first embodiment of the present disclosure will be described with reference to FIGS. 1 to 4. FIG.

[0014] (Communication System 1) 1 is a diagram schematically illustrating an example of a communication system 1 according to the present embodiment 1. As shown in FIG. 1, the communication system 1 includes a communication repeater 100, communication media 200A and 200B, ground stations 300a and 300b, and an air traffic control system 400.

[0015] The communication medium 200A is composed of a server and middleware that manages communication between the ground station 300a and the aircraft, and the communication medium 200B manages communication between the ground station 300b and the aircraft.

[0016] Communication media 200A and 200B transmit communication data such as messages and flight information received by ground stations 300a and 300b from aircraft to an airport air traffic control system 400 via communication repeater 100. Communication media 200A and 200B also transmit communication data from air traffic control system 400 to aircraft in the sky via ground stations 300a and 300b. Ground stations 300a and 300b include VHF (Very High Frequency) stations. Ground station 300a also includes a radio station for satellite communication.

[0017] In the following description, "communication medium 200" means "either communication medium 200A or communication medium 200B." Furthermore, "ground station 300" means "either ground station 300a or ground station 300b." However, the communication system 1 may include three or more communication media 200 and / or three or more ground stations 300.

[0018] The air traffic control system 400 includes a communication control device (not shown). The communication control device of the air traffic control system 400 communicates with aircraft and airport facilities.

[0019] The communication repeater 100 repeats communication between the communication medium 200 and the air traffic control system 400. The communication repeater 100 includes one of the communication monitoring devices 10 and 20 (FIGS. 5 and 7) according to second and third embodiments described below.

[0020] The communication repeater 100 accumulates and manages downlink messages relayed from aircraft to the air traffic control system 400 via the communication medium 200, and based on these, creates a communication history (FIG. 2) that indicates the past communication load of the ground station 300 managed by the communication medium 200. The communication repeater 100 also acquires the flight plan of the aircraft from the air traffic control system 400. The communication history indicates the exchange of communication data between the aircraft and the ground station 300.

[0021] Based on the acquired flight plan, the communication repeater 100 calculates the future communication load of the ground station 300 due to communication between the aircraft and the ground station 300. Then, based on the calculated future communication load of the ground station 300, the communication repeater 100 predicts communication congestion that will occur at the ground station 300. Here, communication congestion means that communication data transmitted from the aircraft to the air traffic control system 400 or from the air traffic control system 400 to the aircraft becomes too concentrated at the ground station 300.

[0022] The communication repeater 100 outputs a warning when communication congestion is predicted to occur at the ground station 300. For example, the communication repeater 100 recommends to the communication provider that provides the ground station 300 where communication congestion is predicted to occur that they consider and implement measures to improve the communication environment (for example, increase communication capacity). Alternatively, the communication repeater 100 warns the air traffic control system 400 that communication congestion is predicted to occur at the ground station 300.

[0023] (Example of communication history) 2 shows an example of a communication history received by the communication relay device 100 from the communication medium 200. In the example shown in FIG. 2, the communication history includes the average delay time per hour of communications between four ground stations 300 ("AAA," "BBB," "CCC," and "DDDD") and an aircraft. For example, the average delay time of ground station "AAAA" at time "1:00" is 20 seconds, and the average delay time of ground station "BBBB" at the same time is 31 seconds.

[0024] The communication history is not limited to the average delay time per unit time, as long as it enables calculation of the future communication load of the ground station 300. In another example, the communication history may include the amount of data communication or the number of packets per unit time.

[0025] (Example of a flight plan) Fig. 3 shows an example of a flight plan that the communication repeater 100 receives from the air traffic control system 400. In the example shown in Fig. 3, the flight plan includes at least the date and time, departure point, destination, route and cruising altitude, and (air) speed of aircraft A and B. The flight plan is submitted to air traffic control by each airline operating the aircraft, and is registered in the air traffic control system 400 before the aircraft take flight.

[0026] (Example of a warning) Fig. 4 shows an example of a warning output by the communication repeater 100 when communication congestion is predicted to occur at the ground station 300. The communication repeater 100 transmits the data shown in Fig. 4 to the air traffic control system 400 (Fig. 1). The terminal (not shown) of the air traffic control system 400 displays the diagram shown in Fig. 4 together with the warning. Fig. 4 also shows a graph (upper left) showing the time progression of the future communication load of the ground station 300.

[0027] 4 shows that there is a possibility of communication congestion occurring at one ground station 300 (represented by a pin). By checking the diagrams and graphs displayed on the terminal, a person in charge of the air traffic control system 400 (e.g., a controller) can know when and where communication congestion will occur, and can consider and implement countermeasures.

[0028] (Effects of this embodiment) According to the configuration of this embodiment, the communication repeater 100 acquires a flight plan for the aircraft. Based on the acquired flight plan, the communication repeater 100 calculates the future communication load of the ground station 300 due to communication between the aircraft and the ground station 300. Then, based on the calculated future communication load of the ground station 300, the communication repeater 100 predicts communication congestion that will occur at the ground station 300. If communication congestion is predicted to occur at the ground station 300, the communication repeater 100 outputs a warning to air traffic control and a communication provider.

[0029] Based on the warning, air traffic control and communication providers consider and implement measures to eliminate communication congestion, thereby making it possible to predict communication congestion that may occur at the ground station 300.

[0030] [Embodiment 2] A second embodiment of the present disclosure will be described with reference to Figures 5 and 6. In the second embodiment, an example of the communication monitoring device 10 included in the communication system 1 described in the first embodiment will be described.

[0031] (Configuration of communication monitoring device 10) Fig. 5 is a block diagram showing the configuration of a communication monitoring device 10 according to embodiment 2. As shown in Fig. 5, the communication monitoring device 10 includes an acquisition unit 11, a calculation unit 12, a prediction unit 13, and an output unit 14.

[0032] The acquisition unit 11 acquires a flight plan for an aircraft. The acquisition unit 11 is an example of an acquisition means.

[0033] For example, the acquisition unit 11 acquires a flight plan (FIG. 3) of an aircraft registered in the air traffic control system 400 (FIG. 1). The acquisition unit 11 outputs information indicating the acquired flight plan to the calculation unit 12.

[0034] The acquisition unit 11 may further acquire a communication history between the ground station 300 and an airplane that has flown in the past. Alternatively, the acquisition unit 11 may further acquire meteorological information (e.g., a weather forecast) indicating future weather conditions (e.g., weather, wind speed, and rainfall) around the ground station 300 in addition to the flight plan of the airplane.

[0035] The calculation unit 12 calculates the future communication load of the ground station 300 (FIG. 1) due to communication between the aircraft and the ground station 300 based on the acquired flight plan. The calculation unit 12 is an example of a calculation means.

[0036] For example, the calculation unit 12 receives, from the acquisition unit 11, information indicating the flight plan of the aircraft.

[0037] The calculation unit 12 calculates the time when communication will occur between the aircraft and the ground station 300, the total amount of data communication, and the total number of exchanges, based on information contained in the aircraft's flight plan (e.g., flight date and time, departure point, destination, route / cruising altitude, airspeed).

[0038] The calculation unit 12 may also receive, from the acquisition unit 11, a communication history ( FIG. 2 ) indicating the past communication load of the ground station 300, along with the flight plan of the aircraft. In this case, the calculation unit 12 may calculate the future communication load of the ground station 300 based on the flight plan and the communication history.

[0039] The calculation unit 12 outputs information indicating the calculated future communication load of the ground station 300 to the prediction unit 13.

[0040] The prediction unit 13 predicts communication congestion that will occur in the ground station 300 based on the calculated future communication load of the ground station 300. The prediction unit 13 is an example of a prediction means.

[0041] For example, the prediction unit 13 receives information indicating the future communication load of the ground station 300 from the calculation unit 12. The prediction unit 13 predicts communication congestion that will occur in the ground station 300 by comparing the future communication load of the ground station 300 calculated by the calculation unit 12 with the upper limit of the communication capacity of the ground station 300.

[0042] The prediction unit 13 may also receive from the acquisition unit 11 meteorological information (e.g., a weather forecast) indicating future weather conditions around the ground station 300. In this case, the prediction unit 13 may predict future communication loads of the ground station 300 and communication congestion that may occur at the ground station 300 based on the received meteorological information.

[0043] The prediction unit 13 outputs the result of predicting communication congestion that will occur at the ground station 300 to the output unit 14. For example, the prediction unit 13 outputs to the output unit 14, as the prediction result, information indicating the date and time when communication congestion is predicted to occur at the ground station 300, the communication load of the ground station 300 at that time, and aircraft that will be affected.

[0044] The output unit 14 outputs a warning when it is predicted that communication congestion will occur in the ground station 300. The output unit 14 is an example of an output means.

[0045] For example, the output unit 14 receives from the prediction unit 13 the result of predicting communication congestion that will occur at the ground station 300. In response, the output unit 14 outputs information indicating airspace that will be affected by the occurrence of communication congestion at the ground station 300.

[0046] (Operation of communication monitoring device 10) The operation of the communication monitoring device 10 according to the second embodiment will be described with reference to Fig. 6. Fig. 6 is a flowchart showing the flow of processing executed by each unit of the communication monitoring device 10.

[0047] As shown in FIG. 6, the acquisition unit 11 acquires a flight plan for an aircraft from the air traffic control system 400 (FIG. 1) (S101).

[0048] The calculation unit 12 calculates the future communication load of the ground station 300 (FIG. 1) based on the flight plan of the aircraft (or, in addition, the communication history) (S102).

[0049] The prediction unit 13 predicts communication congestion that will occur in the ground station 300 based on the calculated future communication load of the ground station 300 (FIG. 1) (S103).

[0050] When it is predicted that communication congestion will occur at the ground station 300, the output unit 14 outputs a warning to the air traffic control system 400 and the communication provider that manages the ground station 300 (S104).

[0051] This completes the operation of the communication monitoring device 10 according to the second embodiment.

[0052] (Effects of this embodiment) According to the configuration of this embodiment, the acquisition unit 11 acquires a flight plan for the aircraft. The calculation unit 12 calculates the future communication load of the ground station 300 due to communication between the aircraft and the ground station 300 based on the acquired flight plan. The prediction unit 13 predicts communication congestion that will occur at the ground station 300 based on the calculated future communication load of the ground station 300. The output unit 14 outputs a warning when communication congestion is predicted to occur at the ground station 300.

[0053] Air traffic control and communication providers can consider and implement countermeasures based on the warning, thereby predicting communication congestion that may occur at the ground station 300.

[0054] [Embodiment 3] A third embodiment of the present disclosure will be described with reference to Figures 7 and 8. In this third embodiment, a configuration will be described that proposes modifying the flight plan of an aircraft when communication congestion is predicted to occur at ground station 300 (Figure 1).

[0055] In the third embodiment, the same components as those in the second embodiment are denoted by the same reference numerals as those in the second embodiment, and the description thereof will be omitted.

[0056] (Configuration of communication monitoring device 20) Fig. 7 is a block diagram showing the configuration of a communication monitoring device 20 according to embodiment 3. As shown in Fig. 7, the communication monitoring device 20 includes an acquisition unit 11, a calculation unit 12, a prediction unit 13, and an output unit 14. The communication monitoring device 20 further includes a proposal unit 25.

[0057] The proposal unit 25 proposes to modify the flight plan of the aircraft when it is predicted that communication congestion will occur at the ground station 300. The proposal unit 25 is an example of a proposal means.

[0058] For example, the proposal unit 25 receives from the prediction unit 13 the result of predicting communication congestion that will occur at the ground station 300. When it is predicted that communication congestion will occur at the ground station 300, the proposal unit 25 transmits a proposal to amend the flight plan of the aircraft to the airline.

[0059] (Operation of communication monitoring device 20) The operation of the communication monitoring device 20 according to the third embodiment will be described with reference to Fig. 8. Fig. 8 is a flowchart showing the flow of processing executed by each unit of the communication monitoring device 20.

[0060] As shown in FIG. 8, the acquisition unit 11 acquires a flight plan of an aircraft from the air traffic control system 400 (FIG. 1) (S201).

[0061] The calculation unit 12 calculates the future communication load of the ground station 300 (FIG. 1) based on the flight plan of the aircraft (or, in addition, the communication history) (S202).

[0062] The prediction unit 13 predicts communication congestion that will occur in the ground station 300 based on the calculated future communication load of the ground station 300 (FIG. 1) (S203).

[0063] When it is predicted that communication congestion will occur at the ground station 300, the output unit 14 outputs a warning to the air traffic control system 400 and the communication provider that manages the ground station 300 (S204).

[0064] The suggestion unit 25 suggests modifying the flight plan of the aircraft (S205).

[0065] This completes the operation of the communication monitoring device 20 according to the third embodiment.

[0066] (Effects of this embodiment) According to the configuration of this embodiment, the acquisition unit 11 acquires a flight plan for the aircraft. The calculation unit 12 calculates the future communication load of the ground station 300 due to communication between the aircraft and the ground station 300 based on the acquired flight plan. The prediction unit 13 predicts communication congestion that will occur at the ground station 300 based on the calculated future communication load of the ground station 300. The output unit 14 outputs a warning when communication congestion is predicted to occur at the ground station 300.

[0067] Air traffic control and communication providers can consider and implement countermeasures based on the warning, thereby predicting communication congestion that may occur at the ground station 300.

[0068] According to the configuration of this embodiment, the suggestion unit 25 suggests modifying the flight plan of the aircraft.

[0069] The airline company considers and implements modifications to the flight plans of its aircraft based on the proposal, thereby reducing the possibility of communication congestion occurring at the ground station 300.

[0070] (Hardware configuration) Each of the components of the communication monitoring devices 10 and 20 described in the second and third embodiments is represented by a functional block. Some or all of these components are realized by an information processing device such as that shown in Fig. 9. Fig. 9 is a block diagram showing an example of the hardware configuration of the information processing device.

[0071] 9, the computer 110 includes a CPU (Central Processing Unit) 111, a main memory 112, a storage device 113, an input interface 114, a display controller 115, a data reader / writer 116, and a communication interface 117. These components are connected to each other via a bus 121 so as to be able to communicate data with each other. Note that the computer 110 may include a GPU (Graphics Processing Unit) or an FPGA (Field-Programmable Gate Array) in addition to or instead of the CPU 111.

[0072] The CPU 111 loads the programs (codes) of this embodiment stored in the storage device 113 into the main memory 112 and executes them in a predetermined order to perform various calculations. The main memory 112 is typically a volatile storage device such as a DRAM (Dynamic Random Access Memory). The programs of this embodiment are provided in a state stored in a computer-readable recording medium 120. The programs of this embodiment may be distributed over the Internet connected via the communication interface 117.

[0073] Specific examples of the storage device 113 include a hard disk drive and a semiconductor storage device such as a flash memory. The input interface 114 mediates data transmission between the CPU 111 and input devices 118 such as a keyboard and a mouse. The display controller 115 is connected to a display device 119 and controls the display on the display device 119.

[0074] The data reader / writer 116 mediates data transmission between the CPU 111 and the recording medium 120, reads programs from the recording medium 120, and writes processing results from the computer 110 to the recording medium 120. The communication interface 117 mediates data transmission between the CPU 111 and other computers.

[0075] Specific examples of the recording medium 120 include general-purpose semiconductor storage devices such as CF (Compact Flash (registered trademark)) and SD (Secure Digital), magnetic recording media such as flexible disks, or optical recording media such as CD-ROMs (Compact Disk Read Only Memory).

[0076] (Addendum) A part or all of the above-described embodiments can be described as, but not limited to, the following supplementary notes.

[0077] (Appendix 1) acquisition means for acquiring a flight plan for the aircraft; a calculation means for calculating a future communication load of the ground station due to communication between the aircraft and the ground station based on the acquired flight plan; a prediction means for predicting communication congestion that will occur at the ground station based on the calculated future communication load of the ground station; an output means for outputting a warning when communication congestion is predicted to occur in the ground station; Equipped with Communications monitoring equipment.

[0078] (Appendix 2) The flight plan includes information indicating the takeoff and landing points, flight route, and takeoff and landing times of the aircraft. 2. A communication monitoring device according to claim 1.

[0079] (Appendix 3) the acquiring means further acquires a communication history indicating a past communication load of the ground station; The calculation means calculates a future communication load of the ground station based on the flight plan and the communication history. 3. The communication monitoring device according to claim 1 or 2.

[0080] (Appendix 4) the calculation means calculates the number of messages transmitted and received per unit time between the aircraft and the ground station based on the acquired flight plan. 4. The communication monitoring device according to claim 1, wherein:

[0081] (Appendix 5) The calculation means calculates the number of the aircraft communicating with the ground station in the same time period based on the acquired flight plan. 4. The communication monitoring device according to claim 1, wherein:

[0082] (Appendix 6) The prediction means predicts communication congestion that will occur at the ground station by comparing the calculated future communication load of the ground station with an upper limit of the communication capacity of the ground station. 6. A communication monitoring device according to any one of claims 1 to 5.

[0083] (Appendix 7) The acquisition means further acquires meteorological information in the vicinity of the ground station in addition to the flight plan of the aircraft, The prediction means predicts the occurrence of congestion in the communication based on the future communication load of the ground station and the weather information. 7. A communication monitoring device according to any one of claims 1 to 6.

[0084] (Appendix 8) the calculation means calculates future communication loads of the plurality of ground stations for the plurality of ground stations; The prediction means predicts, among the plurality of ground stations, a ground station that is least likely to cause communication congestion based on the calculated future communication loads of the plurality of ground stations. 8. A communication monitoring device according to any one of claims 1 to 7.

[0085] (Appendix 9) The output means outputs information indicating the degree of possibility of communication congestion occurring at the ground station. 9. A communication monitoring device according to any one of appendices 1 to 8.

[0086] (Appendix 10) The system further comprises a suggestion unit that suggests modifying the flight plan of the aircraft when communication congestion is predicted to occur at the ground station. 10. The communication monitoring device according to any one of appendices 1 to 9,

[0087] (Appendix 11) The computer Obtaining aircraft flight plans, Calculating a future communication load of the ground station due to communication between the aircraft and the ground station based on the acquired flight plan; predicting communication congestion that will occur at the ground station based on the calculated future communication load of the ground station; outputting a warning when communication congestion is predicted to occur at the ground station; Communications monitoring methods.

[0088] (Appendix 12) obtaining a flight plan for the aircraft; A process of calculating a future communication load of the ground station due to communication between the aircraft and the ground station based on the acquired flight plan; a process of predicting communication congestion that will occur at the ground station based on the calculated future communication load of the ground station; a process of outputting a warning when communication congestion is predicted to occur in the ground station; A program that causes a computer to execute the following.

[0089] (Other notes) Furthermore, some or all of the configurations described in Supplementary Notes 2 to 10 that are dependent on Supplementary Note 1 (communication monitoring device) may also be dependent on Supplementary Note 11 (communication monitoring method) and Supplementary Note 12 (program) in the same dependent relationship as Supplementary Notes 2 to 10. Furthermore, within the scope of each of the above-mentioned embodiments, some or all of the configurations described as Supplements may be made dependent on various hardware, software, various recording means for recording software, or systems.

[0090] The present disclosure has been described above with reference to several embodiments. However, the present disclosure is not limited to the above embodiments. Each embodiment can be combined with other embodiments as appropriate. Furthermore, various modifications that can be understood by those skilled in the art can be made to the configurations and details of the above embodiments within the scope of the present disclosure. [Industrial Applicability]

[0091] The present disclosure can be used, for example, in air traffic control communication systems. [Explanation of symbols]

[0092] 1. Communication Systems 10. Communications monitoring equipment 11 Acquisition Department 12 Calculation section 13 Prediction Department 14 Output section 20. Communications monitoring equipment 25 Proposal Department 100 Communication Repeater 200 Communication Media 200A Communication Media 200B Communication Media 300 Ground Stations 300a ground station 300b ground station 400 Air Traffic Control System

Claims

1. acquisition means for acquiring a flight plan for the aircraft; a calculation means for calculating a future communication load of the ground station due to communication between the aircraft and the ground station based on the acquired flight plan; a prediction means for predicting communication congestion that will occur at the ground station based on the calculated future communication load of the ground station; an output means for outputting a warning when communication congestion is predicted to occur in the ground station; Equipped with Communications monitoring equipment.

2. the acquiring means further acquires a communication history indicating a past communication load of the ground station; The calculation means calculates a future communication load of the ground station based on the flight plan and the communication history.

2. The communication monitoring device according to claim 1.

3. the calculation means calculates the number of messages transmitted and received per unit time between the aircraft and the ground station based on the acquired flight plan.

3. The communication monitoring device according to claim 1 or 2.

4. The calculation means calculates the number of the aircraft communicating with the ground station in the same time period based on the acquired flight plan.

3. The communication monitoring device according to claim 1 or 2.

5. The prediction means predicts communication congestion that will occur at the ground station by comparing the calculated future communication load of the ground station with an upper limit of the communication capacity of the ground station.

5. The communication monitoring device according to claim 1, wherein the communication monitoring device is a communication monitoring device.

6. The acquisition means further acquires meteorological information in the vicinity of the ground station in addition to the flight plan of the aircraft, The prediction means predicts the occurrence of congestion in the communication based on the future communication load of the ground station and the weather information.

6. The communication monitoring device according to claim 1, wherein:

7. The output means outputs information indicating the degree of possibility of communication congestion occurring at the ground station.

7. The communication monitoring device according to claim 1, wherein the communication monitoring device is a communication monitoring device.

8. The system further comprises a suggestion unit that suggests modifying the flight plan of the aircraft when communication congestion is predicted to occur at the ground station.

8. The communication monitoring device according to claim 1, wherein:

9. The computer Obtaining aircraft flight plans, Calculating a future communication load of the ground station due to communication between the aircraft and the ground station based on the acquired flight plan; predicting communication congestion that will occur at the ground station based on the calculated future communication load of the ground station; outputting a warning when communication congestion is predicted to occur at the ground station; Communications monitoring methods.

10. obtaining a flight plan for the aircraft; A process of calculating a future communication load of the ground station due to communication between the aircraft and the ground station based on the acquired flight plan; a process of predicting communication congestion that will occur at the ground station based on the calculated future communication load of the ground station; a process of outputting a warning when communication congestion is predicted to occur in the ground station; A program that causes a computer to execute the following.

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