Measurement system, measurement method, and measurement program

Abstract

To provide a measurement system, a measurement method, and a measurement program that makes it possible to avoid the work of repeatedly adjusting a location where a base station is installed, which can occur when building a stable wireless communication environment between a mobile body and the base station.SOLUTION: According to the measurement system, the measurement method, and the measurement program, quality information indicating the quality of wireless communication performed between a first communication device provided on a first mobile body and a second communication device provided on a second mobile body is acquired. The quality information is acquired for each combination of the first mobile body arranged for candidate location information. An evaluation value is calculated for each combination on the basis of the quality information. Further, a combination having an evaluation value higher than a predetermined level is extracted.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to a measurement system, a measurement method, and a measurement program. [Background technology]

[0002] Patent Document 1 discloses a technique for measuring the communication status of wireless communication between a first communication device provided in a mobile object and a second communication device provided in a fixed base station in order to efficiently build a stable wireless communication environment between the mobile object and the base station. In this technique, while the mobile object is moving, the measured communication status is acquired in association with location information of the first communication device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-195145 Summary of the Invention [Problem to be solved by the invention]

[0004] According to the technology disclosed in Patent Document 1, when the communication state becomes unstable on the work route of a mobile object, the worker needs to change the location where the base station is installed. After changing the location of the base station, the worker needs to measure the communication state again to confirm whether a stable wireless communication environment has actually been established between the mobile object and the base station. Depending on the location of the base station after the change, it may not be possible to establish a stable wireless communication environment, which poses a problem of unavoidable work of repeatedly adjusting the location where the base station is installed.

[0005] The present disclosure has been made in consideration of the above-mentioned circumstances, and aims to provide a measurement system, a measurement method, and a measurement program that can avoid the work of repeatedly adjusting the location of a base station, which can occur when building a stable wireless communication environment between a mobile device and a base station. [Means for solving the problem]

[0006] A measurement system according to the present disclosure includes a first communication device, a second communication device, a management unit, an acquisition unit, a storage unit, a calculation unit, and an extraction unit. The first communication device is provided in a first mobile body. The second communication device is provided in a second mobile body and performs wireless communication with the first communication device. The management unit controls the first mobile body to place the first mobile body based on a measurement target combination selected from combinations for placing the first mobile body at a candidate placement position. The acquisition unit acquires quality information indicating the quality of the wireless communication. The storage unit stores, for each combination, the quality information when the first mobile body is placed at the candidate placement position, in association with the combination. The calculation unit calculates an evaluation value for each combination based on the quality information. The extraction unit extracts combinations from the combinations having the evaluation value higher than a predetermined level.

[0007] The management unit may control the second moving body to scan a specified area, and the quality information may be mapping information that associates the quality when the second moving body is placed at a position within the specified area with the position.

[0008] The management unit may switch only the first communication device provided in the first moving object arranged based on the measurement target combination to a state in which communication with the second communication device is possible.

[0009] The quality may be indicated by a quality characteristic value of at least one of the communication strength, communication speed, and data loss rate of the wireless communication.

[0010] The calculation unit may calculate the evaluation value based on a minimum value of the quality specific values.

[0011] The calculation unit may calculate the evaluation value based on an average value of the quality characteristic values.

[0012] A measurement method according to the present disclosure uses a first mobile body equipped with a first communication device and a second mobile body equipped with a second communication device that performs wireless communication with the first communication device. The first mobile body is controlled to place the first mobile body based on a measurement target combination selected from combinations for placing the first mobile body at candidate placement positions. Quality information indicating the quality of the wireless communication is acquired, and for each combination, the quality information when the first mobile body is placed at the candidate placement position is stored in association with the combination. An evaluation value is then calculated for each combination based on the quality information, and combinations having the evaluation value higher than a predetermined level are extracted from the combinations.

[0013] A measurement program according to the present disclosure causes a first communication device provided in a first mobile body, a second communication device provided in a second mobile body that performs wireless communication with the first communication device, and a connected computer to execute the following steps: Execute a step of controlling the first mobile body to place the first mobile body based on a measurement target combination selected from combinations for placing the first mobile body at candidate placement positions; Execute a step of acquiring quality information indicating the quality of the wireless communication; Execute a step of storing, for each of the combinations, the quality information when the first mobile body is placed at the candidate placement position, in association with the combination; Execute a step of calculating, for each of the combinations, an evaluation value based on the quality information; and Execute a step of extracting combinations from the combinations that have the evaluation value higher than a predetermined level. [Effects of the Invention]

[0014] According to the present disclosure, it is possible to avoid the task of repeatedly adjusting the location of the base station, which may occur when building a stable wireless communication environment between a mobile unit and a base station. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a diagram schematically illustrating a configuration of a measurement system according to an embodiment of the present disclosure. [Figure 2]FIG. 2 is a block diagram showing the configuration of a first moving body and a second moving body. [Figure 3] FIG. 2 is a block diagram showing the configuration of an analysis device. [Figure 4] 10 is a flowchart showing the procedure of a measurement process of the measurement system. [Figure 5] FIG. 10 is a sequence diagram showing a part of the procedure of the measurement process of the measurement system. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, several exemplary embodiments will be described with reference to the drawings. Note that common parts in the drawings are given the same reference numerals, and duplicated explanations will be omitted.

[0017] [Measurement system configuration] Fig. 1 is a diagram schematically illustrating a configuration of a measurement system according to an embodiment of the present disclosure, Fig. 2 is a block diagram illustrating the configurations of a first moving body and a second moving body, and Fig. 3 is a block diagram illustrating the configuration of an analysis device.

[0018] A measurement system according to an embodiment of the present disclosure is a system for proposing installation locations of base stations that can realize a stable wireless communication environment in a predetermined area where mobile objects move. More specifically, the measurement system places a first mobile object 30 equipped with wireless communication capabilities in place of the base station at candidate locations (e.g., locations specified by longitude, latitude, and height from the ground surface) where the base station may be placed. The measurement system then measures the wireless communication environment in the predetermined area. From the measured wireless communication environment, the measurement system extracts a location of the first mobile object 30 that can realize a stable wireless communication environment, and proposes a candidate location corresponding to the extracted location as a recommended installation location for the base station.

[0019] The measurement system includes an analysis device 20, a first communication device 31, and a second communication device 41. Here, the analysis device 20 is connected to a wireless antenna 10. The first communication device 31 is provided in a first mobile body 30. The second communication device 41 is provided in a second mobile body 40, and performs wireless communication with the first communication device 31. The measurement system may include the first mobile body 30, the second mobile body 40, and the wireless antenna 10.

[0020] The communication method for wireless communication is not particularly limited. For example, the communication method may be a communication method using a mobile communication network such as a mobile phone network, a wireless packet communication network, a specified low-power radio, or a wireless LAN. The first communication device 31 and the second communication device 41 each include a wireless antenna for wireless communication.

[0021] The first moving body 30 and the second moving body 40 move on land, air, or water, and may be manned or unmanned. For example, the first moving body 30 and the second moving body 40 are drones, unmanned aerial vehicles, or autonomous vehicles. In the following, a case will be described in which the first moving body 30 and the second moving body 40 are drones, but the present invention is not limited to this.

[0022] The wireless antenna 10 is used to wirelessly connect the analysis device 20 to the first moving body 30. Note that the wireless antenna 10 may also be used to wirelessly connect the analysis device 20 to the second moving body 40.

[0023] The analysis device 20 is wirelessly connected to a first communication device 31 via a wireless antenna 10. On the other hand, the analysis device 20 is wirelessly connected to a second communication device 41 via the wireless antenna 10 and the first communication device 31.

[0024] Furthermore, the analysis device 20 transmits a first movement control signal to the first communication device 31 to control the movement of the first moving body 30. The analysis device 20 acquires from the first communication device 31 various pieces of information obtained at the first moving body 30.

[0025] Furthermore, the analysis device 20 transmits a second movement control signal to the second communication device 41 to control the movement of the second moving body 40. The analysis device 20 acquires from the second communication device 41 various pieces of information obtained at the second moving body 40.

[0026] First, as shown in FIG. 2, the first moving object 30 includes a first communication device 31, a position measurement unit 33, and a movement control unit .

[0027] The first communication device 31 receives a first movement control signal from the analysis device 20. In addition, the first communication device 31 transmits to the analysis device 20 the position information of the first moving object 30 acquired by a position measurement unit 33, which will be described later.

[0028] Additionally, the first communication device 31 receives a second mobile control signal from the analysis device 20. Then, the first communication device 31 transmits the received second mobile control signal to the second communication device 41. The first communication device 31 also receives position information and quality information of the second mobile body 40 from the second communication device 41. Then, the first communication device 31 transmits the received position information and quality information of the second mobile body 40 to the analysis device 20. In other words, the first communication device 31 relays communication between the analysis device 20 and the second communication device 41.

[0029] The position measurement unit 33 periodically acquires information (position information) on the current position of the first moving object 30. For example, the position measurement unit 33 is a GNSS / IMU device. Specifically, the position measurement unit 33 acquires the position information of the first moving object 30 in global coordinates. For example, the position measurement unit 33 acquires the current position of the first moving object 30 in global coordinates using a GNSS (Global Navigation Satellite System).

[0030] The movement control unit 35 controls the movement of the first moving body 30 based on the first movement control signal. For example, the movement control unit 35 calculates the positional deviation between the destination position included in the first movement control signal and the current position of the first moving body 30. The movement control unit 35 may then control the drive means of the first moving body 30 so that the positional deviation is equal to or less than a predetermined value, i.e., so that the first moving body 30 arrives near the destination position. For example, if the first moving body 30 is a drone, the movement control unit 35 may control a propeller motor that flies the drone, a motor that controls the pitching angle and rolling angle of the aircraft, etc.

[0031] Next, as shown in FIG. 2, the second moving object 40 includes a second communication device 41, a position measurement unit 43, a movement control unit 45, and a quality information generation unit 47.

[0032] The second communication device 41 receives a second movement control signal from the first communication device 31. In addition, the second communication device 41 transmits to the first communication device 31 the position information of the second moving object 40 acquired by a position measurement unit 43 (described later) and the quality information generated by a quality information generation unit 47.

[0033] The position measurement unit 43 periodically acquires information (position information) on the current position of the second moving body 40. For example, the position measurement unit 43 is a GNSS / IMU device. Specifically, the position measurement unit 43 acquires the position information of the second moving body 40 in global coordinates. For example, the position measurement unit 43 acquires the current position of the second moving body 40 in global coordinates using a GNSS (Global Navigation Satellite System).

[0034] The movement control unit 45 controls the movement of the second moving body 40 based on the second movement control signal. For example, the movement control unit 45 calculates the positional deviation between the destination position included in the second movement control signal and the current position of the second moving body 40. The movement control unit 45 may then control the drive means of the second moving body 40 so that the positional deviation is equal to or less than a predetermined value, i.e., so that the second moving body 40 arrives near the destination position. For example, if the second moving body 40 is a drone, the movement control unit 45 may control a propeller motor that flies the drone, a motor that controls the pitching angle and rolling angle of the aircraft, etc.

[0035] Furthermore, the movement control unit 45 may control the second moving body 40 based on the second movement control signal so that the second moving body 40 scans a predetermined area. In other words, the movement control unit 45 may control the movement of the second moving body 40 so that the second moving body 40 moves along a route that passes through all of the measurement points included in the predetermined area.

[0036] The quality information generator 47 generates quality information indicating the quality of wireless communication between the first communication device 31 and the second communication device 41. Here, the quality of wireless communication is indicated by a quality specific value of at least one of the communication strength, communication speed, and data loss rate of wireless communication.

[0037] Furthermore, when the second moving body 40 is controlled to scan a predetermined area, the quality information generating unit 47 may generate mapping information as quality information, in which the quality in the predetermined area is mapped on a map. The mapping information is information that associates the quality of wireless communication at each measurement point in the predetermined area with the measurement point.

[0038] 3, the analysis device 20 includes an acquisition unit 21, a database 23 (storage unit), a controller 25, an operation unit 27, and a presentation unit 29. The controller 25 is connected to the acquisition unit 21, the database 23, the operation unit 27, and the presentation unit 29 so as to be able to communicate with them.

[0039] Alternatively, the operation unit 27 and the presentation unit 29 may be provided in the analysis device 20 itself, or may be installed outside the analysis device 20 and connected to the analysis device 20.

[0040] The acquiring unit 21 acquires quality information indicating the quality of wireless communication between the first communication device 31 and the second communication device 41. For example, the acquiring unit 21 acquires the quality information generated by the quality information generating unit 47.

[0041] The database 23 stores the acquired quality information. In particular, the database 23 stores the quality information in association with the combination of the first moving body 30 being placed with respect to the candidate placement position when the quality information was acquired. When there are multiple combinations of the first moving body 30 being placed with respect to the candidate placement position, the database 23 stores the quality information for each combination.

[0042] The operation unit 27 is an input device that can be operated by a user, such as a monitor or maintenance person of the measurement system. For example, the operation unit 27 is a keyboard, a mouse, a trackball, a touch panel, or the like. The operation unit 27 is not limited to the examples given here. The content of the user's operation input via the operation unit 27 is transmitted to the controller 25.

[0043] The presentation unit 29 displays the information received from the controller 25. For example, the presentation unit 29 may be a display that displays figures and characters by combining a plurality of display pixels. The presentation unit 29 is not limited to the examples given here.

[0044] The controller 25 (controller) is a general-purpose microcomputer equipped with a CPU (central processing unit), a memory, and an input / output unit. A computer program (measurement program) for functioning as the analysis device 20 is installed in the controller 25. By executing the computer program, the controller 25 functions as a plurality of information processing circuits (251, 253, 255) equipped in the analysis device 20. The computer program (measurement program) may be stored in a storage medium readable and writable by a computer.

[0045] In this disclosure, an example is shown in which multiple information processing circuits (251, 253, 255) are realized by software. However, it is also possible to configure the information processing circuits (251, 253, 255) by preparing dedicated hardware for executing each of the information processes described below. Also, the multiple information processing circuits (251, 253, 255) may be configured by individual hardware.

[0046] As shown in FIG. 3, the controller 25 includes a management unit 251, a calculation unit 253, and an extraction unit 255 as a plurality of information processing circuits (251, 253, 255).

[0047] The management unit 251 manages the placement of the first moving object 30. More specifically, the management unit 251 acquires pre-set candidate placement positions (for example, positions specified by longitude, latitude, and height from the ground surface). Here, the candidate placement positions are candidates for positions where a base station may be placed.

[0048] The candidate placement positions may be read out from the database 23 or may be input by the user via the operation unit 27.

[0049] The management unit 251 selects a measurement target combination to be measured from among combinations in which first moving bodies are placed at candidate placement positions. For example, there are as many combinations "nCm" in which m first moving bodies are placed at n candidate placement positions. Here, n and m are natural numbers, and m is a number equal to or less than the number of first moving bodies 30 managed by the measurement system. Also, m is a number equal to or less than n.

[0050] However, the management unit 251 may select a combination to be measured by excluding cases where the first mobile bodies are placed adjacent to each other from among combinations where m first mobile bodies are placed at n candidate placement positions. This is because, from the viewpoint of reducing costs when constructing base stations, it is necessary to widely cover the entire predetermined area where the mobile bodies move with as few base stations as possible.

[0051] Then, the management unit 251 generates a first movement control signal based on the selected combination of measurement targets to position the first moving body 30. The generated first movement control signal is transmitted to the first communication device 31 via the wireless antenna 10.

[0052] The management unit 251 may control all of the multiple first moving bodies 30 managed by the measurement system to be placed at any of the candidate placement positions. Alternatively, the management unit 251 may control only some of the multiple first moving bodies 30 to be placed at any of the candidate placement positions.

[0053] Alternatively, the management unit 251 may switch only the first communication device 31 provided on the first moving body 30 placed based on the selected measurement target combination to a state capable of communicating with the second communication device 41. Efficient measurement can be performed when some of the multiple first moving bodies 30 are placed at candidate placement positions related to the measurement target combination, and the remaining first moving bodies 30 are placed at candidate placement positions other than the candidate placement positions related to the measurement target combination.

[0054] For example, the remaining first moving bodies 30 that are not placed at the candidate placement positions related to the measurement target combination are set in a state where they cannot communicate with the second communication device 41. This allows the remaining first moving bodies 30 to be moved to the candidate placement positions related to the next measurement target combination, while quality information can be acquired using the first moving bodies 30 that are placed at the candidate placement positions related to the currently selected measurement target combination.

[0055] The management unit 251 may also control the second moving body 40 to scan a predetermined area. For example, the management unit 251 may generate a second movement control signal so that the second moving body 40 moves along a route that passes through all of the measurement points included in the predetermined area. The generated second movement control signal is transmitted to the second communication device 41 via the wireless antenna 10 and the first communication device 31.

[0056] The calculation unit 253 calculates an evaluation value based on the quality information stored in the database 23 for each combination of arranging the first moving object with respect to the candidate arrangement position.

[0057] For example, the quality information includes at least one quality characteristic value of the wireless communication strength, communication speed, and data loss rate. The calculation unit 253 may calculate the evaluation value based on the minimum value of these quality characteristic values. This is to set a low evaluation value for the arrangement of base stations where there are measurement points where the quality of wireless communication deteriorates in a predetermined area.

[0058] Alternatively, the calculation unit 253 may calculate the evaluation value based on the average value of the quality characteristic values, where the average value is a value obtained by dividing the sum of the evaluation values ​​at the measurement points in the entire predetermined area by the number of measurement points included in the predetermined area.

[0059] Note that weighting may be applied to each measurement point in a predetermined area, and the average value may be calculated by weighted averaging. For example, parameters used for weighting include population density, traffic volume, and the cost of constructing a base station. By assigning a higher weight to points with higher population density and traffic volume, base stations can be located with user convenience in mind. Furthermore, by assigning a higher weight to points with lower costs of constructing a base station, base stations can be located with economic rationality in mind.

[0060] The extraction unit 255 extracts combinations having evaluation values ​​higher than a predetermined level from the combinations stored in the database 23. In particular, the extraction unit 255 extracts combinations having evaluation values ​​higher than a predetermined level as recommended combinations.

[0061] Alternatively, the extraction unit 255 may output the extracted recommended combination to the outside. The extracted recommended combination may be presented to the user via the presentation unit 29, for example.

[0062] [Measurement system measurement processing procedure] Next, the procedure of the measurement process of the measurement system according to the present disclosure will be described with reference to Fig. 4 and Fig. 5. Fig. 4 is a flowchart showing the procedure of the measurement process of the measurement system. Fig. 5 is a sequence diagram showing some steps of the measurement process of the measurement system. The process of the flowchart shown in Fig. 4 is started based on a user instruction.

[0063] In step S101, the management unit 251 selects a measurement target combination to be a measurement target from among combinations in which the first moving object is placed with respect to the candidate placement positions.

[0064] In step S103, the measurement system places the first moving body 30 at the candidate placement position based on the measurement target combination.

[0065] 5, a first movement control signal is transmitted from the analysis device 20 to the first moving body 30. Then, in step S301, position information of the first moving body 30 is acquired. In step S303, based on the first movement control signal, the first moving body 30 moves to a candidate placement position related to the measurement target combination. Thereafter, the position information of the first moving body 30 is transmitted from the first moving body 30 to the analysis device 20.

[0066] Step S103 is executed until the placement of the candidate placement positions and the first moving body 30 related to the measurement target combination is completed.

[0067] Next, in step S105, the acquisition unit 21 acquires quality information indicating the quality of wireless communication between the first communication device 31 and the second communication device 41.

[0068] 5, a second movement control signal is transmitted from the analysis device 20 to the first moving body 30. Then, the second movement control signal is transmitted from the first moving body 30 to the second moving body 40. In other words, the first moving body 30 relays the transmission of the second movement control signal from the analysis device 20 to the second moving body 40.

[0069] In step S401, the quality information generating unit 47 generates quality information indicating the quality of wireless communication between the first communication device 31 and the second communication device 41. In step S403, the location information of the second moving object 40 is acquired.

[0070] Thereafter, the second moving body 40 transmits the quality information and the position information of the second moving body 40 to the first moving body 30. Then, the first moving body 30 transmits the quality information and the position information of the second moving body 40 to the analysis device 20. In other words, the first moving body 30 relays the transmission of the quality information and the position information of the second moving body 40 from the second moving body 40 to the analysis device 20.

[0071] Next, in step S107, the calculation unit 253 calculates an evaluation value for each combination of arranging the first moving object with respect to the candidate arrangement position, based on the quality information.

[0072] In step S109, the database 23 stores the calculated evaluation value for each combination of the candidate placement positions and the first moving object.

[0073] In step S111, the management unit 251 determines whether or not there is a combination that has not been selected as a measurement target combination among the combinations for arranging the first moving object with respect to the candidate arrangement positions.

[0074] If there is an unselected combination (YES in step S111), the process returns to step S101, and the management unit 251 selects the unselected combination as a measurement target combination.

[0075] On the other hand, if there is no unselected combination (NO in step S111), in step S113, the extraction unit 255 extracts combinations having evaluation values ​​higher than a predetermined level. In particular, the extraction unit 255 extracts combinations having evaluation values ​​higher than a predetermined level as recommended combinations.

[0076] In step S115, the extraction unit 255 outputs the recommended combination.

[0077] [Effects of the embodiment] As described in detail above, the measurement system, measurement method, and measurement program according to the present disclosure use a first mobile body equipped with a first communication device and a second mobile body equipped with a second communication device that performs wireless communication with the first communication device. The first mobile body is controlled to place the first mobile body based on a measurement target combination selected from combinations for placing the first mobile body at a candidate placement position. Quality information indicating the quality of the wireless communication is acquired, and for each combination, the quality information when the first mobile body is placed at the candidate placement position is stored in association with the combination. An evaluation value is then calculated for each combination based on the quality information, and combinations having an evaluation value higher than a predetermined level are extracted from the combinations.

[0078] This makes it possible to avoid the need to repeatedly adjust the location of the base station, which can occur when building a stable wireless communication environment between a mobile unit and a base station.

[0079] In particular, before the base station is actually installed, quality information is obtained for the combination of the first mobile unit and the candidate installation position. Therefore, by comparing multiple combinations, it is possible to grasp the base station installation that is likely to create a stable wireless communication environment before the base station is actually installed.

[0080] The measurement system, measurement method, and measurement program according to the present disclosure may control the second mobile body to scan a predetermined area. The quality information may be mapping information that associates the quality when the second mobile body is located at a position within the predetermined area with the position within the predetermined area. This allows the quality of wireless communication within the predetermined area to be understood in conjunction with map information. Furthermore, locations where wireless communication quality deteriorates can be identified, and the mapping results can be used in future base station deployment planning.

[0081] The measurement system, measurement method, and measurement program according to the present disclosure may switch only the first communication device provided in the first moving body arranged based on the measurement target combination to a state capable of communicating with the second communication device. This allows for efficient measurement when some of the multiple first moving bodies are arranged at candidate placement positions related to the measurement target combination and the remaining first moving bodies are arranged at candidate placement positions other than the candidate placement positions related to the measurement target combination.

[0082] For example, while moving the remaining first mobile units to the candidate locations for the next measurement target combination, quality information can be acquired using the first mobile units placed at the candidate locations for the currently selected measurement target combination. As a result, the time spent placing the first mobile units can also be used for measurement. As a result, it is possible to quickly determine the location of base stations that are likely to create a stable wireless communication environment before actually installing the base stations.

[0083] In the measurement system, the measurement method, and the measurement program according to the present disclosure, the quality may be indicated by at least one quality specific value of the communication strength, the communication speed, and the data loss rate of the wireless communication. The placement of base stations can be considered taking the quality of the wireless communication into account. As a result, the accuracy of the placement of base stations can be improved.

[0084] The measurement system, the measurement method, and the measurement program according to the present disclosure may calculate the evaluation value based on the minimum value of the quality specific value. This allows a low evaluation value to be set for the placement of a base station where there is a measurement point where the quality of wireless communication in a predetermined area deteriorates. As a result, the accuracy of the placement of the base station can be improved.

[0085] The measurement system, measurement method, and measurement program according to the present disclosure may calculate the evaluation value based on an average value of the quality specific values. This allows the placement of base stations to be considered taking into account the quality of wireless communication throughout a predetermined area. As a result, the accuracy of the placement of base stations can be improved. Furthermore, the placement of base stations can be performed with economic rationality in mind.

[0086] Each function described in the above embodiments may be implemented by one or more processing circuits, including programmed processors, electrical circuits, and even devices such as application specific integrated circuits (ASICs), or circuit components arranged to perform the described functions.

[0087] Although several embodiments have been described, the embodiments can be modified or varied based on the above disclosure. All components of the above embodiments and all features described in the claims may be individually extracted and combined, unless they contradict each other. [Explanation of symbols]

[0088] 10. Radio Antenna 20 Analyzer 21 Acquisition Department 23 Database (storage section) 25 Controller 251 Management Department 253 Calculation Unit 255 Extraction part 27 Control section 29 Presentation section 30 First Mobile Unit 31 First communication device 40 Second Mobile Unit 41 Second communication device 47 Quality information generation section

Claims

1. A first communication device provided in a first mobile object; a second communication device provided in a second mobile object and configured to wirelessly communicate with the first communication device; a management unit that controls the first moving body so as to place the first moving body based on a measurement target combination selected from combinations for placing the first moving body at a candidate placement position; an acquisition unit that acquires quality information indicating the quality of the wireless communication; a storage unit that stores, for each of the combinations, the quality information when the first moving object is placed at the candidate placement position, in association with the combination; a calculation unit that calculates an evaluation value for each of the combinations based on the quality information; an extraction unit that extracts combinations having evaluation values ​​higher than a predetermined level from the combinations; A measurement system comprising: the management unit controls the second moving body to scan a predetermined area; A measurement system, wherein the quality information is mapping information that associates the quality when the second moving body is placed at a position within the specified area with the position.

2. A first communication device provided in a first mobile object; a second communication device provided in a second mobile object and configured to wirelessly communicate with the first communication device; a management unit that controls the first moving body so as to place the first moving body based on a measurement target combination selected from combinations for placing the first moving body at a candidate placement position; an acquisition unit that acquires quality information indicating the quality of the wireless communication; a storage unit that stores, for each of the combinations, the quality information when the first moving object is placed at the candidate placement position, in association with the combination; a calculation unit that calculates an evaluation value for each of the combinations based on the quality information; an extraction unit that extracts combinations having evaluation values ​​higher than a predetermined level from the combinations; A measurement system comprising: The management unit switches only the first communication device provided on the first moving body arranged based on the measurement target combination to a state in which it can communicate with the second communication device.

3. The measurement system according to claim 1 , wherein the quality is indicated by at least one quality characteristic value of the communication strength, communication speed, and data loss rate of the wireless communication.

4. A first communication device provided in a first mobile object; a second communication device provided in a second mobile object and configured to wirelessly communicate with the first communication device; a management unit that controls the first moving body so as to place the first moving body based on a measurement target combination selected from combinations for placing the first moving body at a candidate placement position; an acquisition unit that acquires quality information indicating the quality of the wireless communication; a storage unit that stores, for each of the combinations, the quality information when the first moving object is placed at the candidate placement position, in association with the combination; a calculation unit that calculates an evaluation value for each of the combinations based on the quality information; an extraction unit that extracts combinations having evaluation values ​​higher than a predetermined level from the combinations; A measurement system comprising: the quality is indicated by at least one quality characteristic value of the communication strength, communication speed, and data loss rate of the wireless communication; The calculation unit calculates the evaluation value based on a minimum value of the quality characteristic values.

5. A first communication device provided in a first mobile object; a second communication device provided in a second mobile object and configured to wirelessly communicate with the first communication device; a management unit that controls the first moving body so as to place the first moving body based on a measurement target combination selected from combinations for placing the first moving body at a candidate placement position; an acquisition unit that acquires quality information indicating the quality of the wireless communication; a storage unit that stores, for each of the combinations, the quality information when the first moving object is placed at the candidate placement position, in association with the combination; a calculation unit that calculates an evaluation value for each of the combinations based on the quality information; an extraction unit that extracts combinations having evaluation values ​​higher than a predetermined level from the combinations; A measurement system comprising: the quality is indicated by at least one quality characteristic value of the communication strength, communication speed, and data loss rate of the wireless communication; The calculation unit calculates the evaluation value based on an average value of the quality characteristic values.

6. A measurement method using a first mobile body having a first communication device and a second mobile body having a second communication device that performs wireless communication with the first communication device, controlling the first moving body so as to place the first moving body based on a measurement target combination selected from combinations for placing the first moving body at a candidate placement position; acquiring quality information indicating the quality of the wireless communication; for each of the combinations, the quality information when the first moving object is placed at the candidate placement position is stored in association with the combination; calculating an evaluation value for each of the combinations based on the quality information; A measurement method for extracting combinations having evaluation values ​​higher than a predetermined level from the combinations, Controlling the second moving body to scan a predetermined area; A measurement method, wherein the quality information is mapping information that associates the quality when the second moving body is placed at a position within the specified area with the position.

7. A measurement method using a first mobile body having a first communication device and a second mobile body having a second communication device that performs wireless communication with the first communication device, controlling the first moving body so as to place the first moving body based on a measurement target combination selected from combinations for placing the first moving body at a candidate placement position; acquiring quality information indicating the quality of the wireless communication; for each of the combinations, the quality information when the first moving object is placed at the candidate placement position is stored in association with the combination; calculating an evaluation value for each of the combinations based on the quality information; A measurement method for extracting combinations having evaluation values ​​higher than a predetermined level from the combinations, A measurement method in which only the first communication device provided on the first moving body arranged based on the measurement target combination is switched to a state in which it can communicate with the second communication device.

8. A measurement method using a first mobile body having a first communication device and a second mobile body having a second communication device that performs wireless communication with the first communication device, controlling the first moving body so as to place the first moving body based on a measurement target combination selected from combinations for placing the first moving body at a candidate placement position; acquiring quality information indicating the quality of the wireless communication; for each of the combinations, the quality information when the first moving object is placed at the candidate placement position is stored in association with the combination; calculating an evaluation value for each of the combinations based on the quality information; A measurement method for extracting combinations having evaluation values ​​higher than a predetermined level from the combinations, the quality is indicated by at least one quality characteristic value of the communication strength, communication speed, and data loss rate of the wireless communication; A measurement method, further comprising: calculating the evaluation value based on the minimum value of the quality characteristic values.

9. A measurement method using a first mobile body having a first communication device and a second mobile body having a second communication device that performs wireless communication with the first communication device, controlling the first moving body so as to place the first moving body based on a measurement target combination selected from combinations for placing the first moving body at a candidate placement position; acquiring quality information indicating the quality of the wireless communication; for each of the combinations, the quality information when the first moving object is placed at the candidate placement position is stored in association with the combination; calculating an evaluation value for each of the combinations based on the quality information; A measurement method for extracting combinations having evaluation values ​​higher than a predetermined level from the combinations, the quality is indicated by at least one quality characteristic value of the communication strength, communication speed, and data loss rate of the wireless communication; A measurement method, wherein the evaluation value is calculated based on an average value of the quality characteristic values.

10. A first communication device provided in a first mobile body, a second communication device provided in a second mobile body and performing wireless communication with the first communication device, and a connected computer, controlling the first moving body so as to place the first moving body based on a measurement target combination selected from combinations for placing the first moving body at a candidate placement position; acquiring quality information indicating quality of the wireless communication; storing, for each of the combinations, the quality information when the first moving object is placed at the candidate placement position, in association with the combination; calculating an evaluation value for each of the combinations based on the quality information; extracting a combination having an evaluation value higher than a predetermined level from the combinations; A measurement program for executing Executing a step of controlling the second moving body to scan a predetermined area; A measurement program, wherein the quality information is mapping information that associates the quality when the second moving body is placed at a position within the specified area with the position.

11. A first communication device provided in a first mobile body, a second communication device provided in a second mobile body and performing wireless communication with the first communication device, and a connected computer, controlling the first moving body so as to place the first moving body based on a measurement target combination selected from combinations for placing the first moving body at a candidate placement position; acquiring quality information indicating quality of the wireless communication; storing, for each of the combinations, the quality information when the first moving object is placed at the candidate placement position, in association with the combination; calculating an evaluation value for each of the combinations based on the quality information; extracting a combination having an evaluation value higher than a predetermined level from the combinations; A measurement program for executing a measurement program that executes a step of switching only the first communication device provided on the first moving body arranged based on the measurement target combination to a state in which it can communicate with the second communication device;

12. A first communication device provided in a first mobile body, a second communication device provided in a second mobile body and performing wireless communication with the first communication device, and a connected computer, controlling the first moving body so as to place the first moving body based on a measurement target combination selected from combinations for placing the first moving body at a candidate placement position; acquiring quality information indicating quality of the wireless communication; storing, for each of the combinations, the quality information when the first moving object is placed at the candidate placement position, in association with the combination; calculating an evaluation value for each of the combinations based on the quality information; extracting a combination having an evaluation value higher than a predetermined level from the combinations; A measurement program for executing the quality is indicated by at least one quality characteristic value of the communication strength, communication speed, and data loss rate of the wireless communication; a measurement program causing the program to execute a step of calculating the evaluation value based on the minimum value of the quality characteristic values;

13. A first communication device provided in a first mobile body, a second communication device provided in a second mobile body and performing wireless communication with the first communication device, and a connected computer, controlling the first moving body so as to place the first moving body based on a measurement target combination selected from combinations for placing the first moving body at a candidate placement position; acquiring quality information indicating quality of the wireless communication; storing, for each of the combinations, the quality information when the first moving object is placed at the candidate placement position, in association with the combination; calculating an evaluation value for each of the combinations based on the quality information; extracting a combination having an evaluation value higher than a predetermined level from the combinations; A measurement program for executing the quality is indicated by at least one quality characteristic value of the communication strength, communication speed, and data loss rate of the wireless communication; a measurement program causing the computer to execute a step of calculating the evaluation value based on an average value of the quality characteristic values;

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