JP2021087141A - Control device, measurement system, control method, and program - Google Patents

Abstract

To measure the frequency band of a radio wave with a simple configuration.SOLUTION: A control device includes: a performance information acquisition unit that acquires performance information indicating a frequency band in which radio waves can be received for each of a plurality of receivers that receive radio waves transmitted from a terminal by radio communication; and a reception control unit that, in response to designation of a frequency band, causes a receiver whose performance information includes the designated frequency band to receive a signal transmitted from the terminal.SELECTED DRAWING: Figure 1

Description

The present invention relates to control devices, measurement systems, control methods and programs.

The frequency band used for wireless communication is determined for each country or region based on the laws and regulations such as the Radio Law. Therefore, conventionally, the work of measuring the frequency band of the radio wave transmitted from the device by wireless communication and confirming whether or not the radio wave complies with the legal regulations has been performed. The measurement of the frequency band of radio waves is performed using, for example, a plurality of receivers.

The above-mentioned confirmation work needs to be performed for all channels used by the terminal for communication. Therefore, the frequency band of the radio wave is measured many times, which is troublesome. Further, even if an attempt is made to reduce the number of measurements using a plurality of receivers, there is a problem that if the frequency bands of the radio waves that can be received differ depending on the receivers, it may not be possible to receive radio waves in some frequency bands. ..

The disclosed technique aims to measure the frequency band of radio waves with a simple configuration.

The disclosed technology receives a performance information acquisition unit that acquires performance information indicating a frequency band in which radio waves can be received for each of a plurality of receivers that receive radio waves transmitted by wireless communication from a terminal, and a frequency band designation. , A control device including a reception control unit that causes a receiver whose performance information includes the designated frequency band to receive a signal transmitted from the terminal.

The frequency band of radio waves can be measured with a simple configuration.

It is a figure which shows an example of the system configuration of a measurement system. It is a figure which shows an example of the hardware composition of a control device. It is a figure which shows an example of the hardware configuration of a wireless receiver. It is a figure which shows an example of the function of a control device. It is a figure which shows an example of the function of a wireless receiver. It is a figure which shows an example of the terminal information. It is a figure which shows an example of a country setting information. It is a figure which shows an example of performance information. It is a figure which shows an example of the flowchart of the wireless communication inspection process. It is a figure which shows an example of the flowchart of the reception start processing. It is a figure which shows an example of the flowchart of abnormality determination processing. It is a figure which shows an example of the sequence of performance information acquisition processing and connection port designation processing. It is a figure which shows an example of the sequence of the reception start processing. It is a figure which shows an example of the sequence of the reception end processing. It is a figure which shows an example of the sequence of abnormality determination processing. It is a figure which shows an example of the sequence of connection disconnection processing.

Hereinafter, embodiments of the measurement system according to the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing an example of a system configuration of a measurement system. The measurement system 1 is a system for inspecting the operation of transmitting radio waves for wireless communication of the MFP (Multifunction Peripheral / Product / Printer) 2 which is the terminal to be inspected.

The MFP2 is assigned a channel to be used for active scanning for each country setting. This channel allocation is set based on the radio law of each country and is updated from time to time. If, in a certain country, the MFP2 transmits radio waves of a channel not assigned by the country setting indicating the country, there is a possibility of violating the radio law of each country. Therefore, the measurement system 1 is used to check whether the communication frame included in the radio wave of the wireless communication transmitted from the MFP 2 as an active scan uses the channel assigned to each country setting.

The channel is a number indicating the frequency band of the radio wave of the divided wireless communication. The active scan is a scanning method for connecting to a wireless access point by sending a scan frame (Probe Request) from the terminal and receiving a response frame (Probe Response) from the wireless access point. .. A communication frame is a structural unit of digital data transfer in a computer network or telecommunications.

Specifically, as shown in FIG. 1, the MFP2 is an M-unit MFP composed of MFP2-1, MFP2-2, ..., MFP2-M. Here, M may be 1 or 2 or more.

When M is 2 or more, the efficiency of inspection can be improved by inspecting a plurality of MFPs 2 in parallel. Further, the MFP2 may be the same model or a different model. For example, if a plurality of MFPs 2 of the same model are inspected, the operation of transmitting radio waves for wireless communication when the setting is changed can be inspected in parallel for the MFP 2 of the model.

As an example of the inspection content, the present embodiment shows an example of inspecting the operation of transmitting the radio wave of wireless communication for each country setting when the MFP2 is manufactured or shipped. The country setting is a setting for operating the MFP2 according to the country of the export destination when the MFP2 is exported overseas. For example, when using it in Japan, the country setting is Japan. The target of country setting may include not only the country but also the region and the like.

Specifically, the measurement system 1 includes a control device 10 and a wireless reception device 20.

The control device 10 is communicably connected to the wireless receiving device 20 via the network 30. The control device 10 instructs the wireless receiving device 20 to start and stop wireless reception, extract a communication frame, and the like.

The wireless receiving device 20 is N devices including a wireless receiving device 20-1, a wireless receiving device 20-2, ..., And a wireless receiving device 20-N. Here, N may be 1 or 2 or more. When N is 2 or more, the efficiency of inspection can be improved by using a plurality of wireless receiving devices 20 in parallel.

The wireless receiving device 20 receives radio waves for wireless communication transmitted from the MFP 2. Then, the wireless receiving device 20 extracts the communication frame included in the radio wave of the wireless communication, and determines whether or not the channel used for the active scan is the assigned channel.

The extraction of communication frames included in the radio waves of wireless communication is executed by a technique called packet capture or sniffer. The wireless receiving device 20 may apply these techniques by reading a dedicated application program to perform extraction of communication frames.

Next, the hardware configuration of each device included in the measurement system 1 according to the present embodiment will be described.

FIG. 2 is a diagram showing an example of the hardware configuration of the control device 10.

As shown in FIG. 2, the control device 10 is constructed by a computer, and has a CPU 101, a ROM 102, a RAM 103, an HD 104, an HDD (Hard Disk Drive) controller 105, a display 106, and an external device connection I / F (Interface) 108. It includes a network I / F 109, a data bus 110, a controller 111, a pointing device 112, a DVD-RW (Digital Versatile Disk Rewritable) drive 114, and a media I / F 116.

Of these, the CPU 101 controls the operation of the entire control device 10. The ROM 102 stores a program used for driving the CPU 101 such as an IPL (Initial Program Loader). The RAM 103 is used as a work area of the CPU 101. The HD104 stores various data such as programs. The HDD controller 105 controls reading or writing of various data to the HD 104 according to the control of the CPU 101. The display 106 displays various information such as cursors, menus, windows, characters, or images.

The external device connection I / F 108 is an interface for connecting various external devices. The external device in this case is, for example, a device such as a USB (Universal Serial Bus) memory or a printer. The network I / F 109 is an interface for data communication with the wireless receiving device 20 or the like using the network. The data bus 110 is an address bus, a data bus, or the like for electrically connecting each component such as the CPU 101 shown in FIG.

Further, the keyboard 111 is a kind of input means including a plurality of keys for inputting characters, numerical values, various instructions and the like. The pointing device 112 is a kind of input means for selecting and executing various instructions, selecting a processing target, moving a cursor, and the like. The DVD-RW drive 114 controls reading or writing of various data to the DVD-RW 113 as an example of the removable recording medium. In addition, it is not limited to DVD-RW, and may be DVD-R or the like. The media I / F 116 controls reading or writing (storage) of data to the media 115 such as a flash memory.

FIG. 3 is a diagram showing an example of the hardware configuration of the wireless receiving device 20.

As shown in FIG. 3, the wireless receiving device 20 is constructed by a computer, and has a CPU 201, a ROM 202, a RAM 203, an HD 204, an HDD (Hard Disk Drive) controller 205, a display 206, and an external device connection I / F (Interface) 208. , Network I / F209, Databus 210, Keyboard 211, Pointing Device 212, DVD-RW (Digital Versatile Disk Rewritable) Drive 214, Media I / F216, Receiver 217-1 and Receiver 217-2.

Of these, the CPU 201 controls the operation of the entire wireless receiving device 20. The ROM 202 stores a program used for driving the CPU 201 such as an IPL (Initial Program Loader). The RAM 203 is used as a work area of the CPU 201. The HD204 stores various data such as programs. The HDD controller 205 controls reading or writing of various data to the HD 204 according to the control of the CPU 201. The display 206 displays various information such as cursors, menus, windows, characters, or images.

The external device connection I / F 208 is an interface for connecting various external devices. The external device in this case is, for example, a device such as a USB (Universal Serial Bus) memory or a printer. The network I / F 209 is an interface for data communication with the control device 10 and the like using the network. The data bus 210 is an address bus, a data bus, or the like for electrically connecting each component such as the CPU 201 shown in FIG.

Further, the keyboard 211 is a kind of input means including a plurality of keys for inputting characters, numerical values, various instructions and the like. The pointing device 212 is a kind of input means for selecting and executing various instructions, selecting a processing target, moving a cursor, and the like. The DVD-RW drive 214 controls reading or writing of various data to the DVD-RW 213 as an example of the removable recording medium. In addition, it is not limited to DVD-RW, and may be DVD-R or the like. The media I / F 216 controls reading or writing (storage) of data to the media 215 such as a flash memory.

The receiver 217-1 is a built-in wireless communication radio wave receiver. Further, the receiver 217-2 is a receiver for radio waves of external type wireless communication such as a USB dongle type and a card type. A radio wave receiver for wireless communication is a device that receives radio waves for wireless communication. The receiver 217-1 and the receiver 217-2 each receive radio waves for wireless communication on a designated channel.

Although the example in which the wireless receiver 20 includes two receivers is shown, the number of receivers may be other than 2, for example, 1 or 3 or more. Hereinafter, the receiver 217-1 and the receiver 217-2 are collectively referred to as a receiver 217.

Next, the function of each device included in the measurement system 1 according to the present embodiment will be described.

FIG. 4 is a diagram showing an example of the function of the control device 10.

The control device 10 includes a storage unit 11, a performance information acquisition unit 12, a reception control unit 13, and an abnormality determination unit 14.

The storage unit 11 stores various data, programs, and the like. Specifically, the storage unit 11 stores the terminal information 1101 and the country setting information 1102.

The terminal information 1101 is information about the MFP2 which is the terminal to be inspected. Further, the country setting information 1102 is information regarding the country setting of the MFP2. Specific examples of the terminal information 1101 and the country setting information 1102 will be described later.

The measurement system 1 inspects whether the MFP 2 actually transmits the active scan frame of the channel specified in the country setting information 1102. That is, the country setting information 1102 is information that serves as a reference for determining whether the operation of the MFP 2 is normal or abnormal.

The performance information acquisition unit 12 acquires the performance information of each receiver 217 included in the wireless receiver 20. Specifically, the performance information is information indicating a channel on which each receiver 217 can receive radio waves.

Based on the performance information, the reception control unit 13 instructs the wireless reception device 20 to start and end reception and receive channels for each receiver 217.

The abnormality determination unit 14 determines whether the operation of each MFP 2 is normal or abnormal. Specifically, the abnormality determination unit 14 instructs the wireless receiving device 20 to extract the communication frame necessary for determination from the radio waves of the received channel. Then, the abnormality determination unit 14 determines whether or not each MFP2 actually transmits the active scan frame of the channel specified in the country setting information 1102 based on the extracted communication frame, so that each MFP2 Judge whether the operation of is normal or abnormal.

FIG. 5 is a diagram showing an example of the function of the wireless receiving device 20.

The wireless receiving device 20 includes a storage unit 21, a performance information transmitting unit 22, a wireless receiving unit 23, and a communication frame extraction unit 24.

The storage unit 21 stores various data, programs, and the like. Specifically, the storage unit 21 stores the performance information 2101.

The performance information 2101 is information indicating a channel capable of receiving radio waves for each receiver 217 included in the wireless receiving device 20. The performance information 2101 is generated, for example, by the wireless receiving device 20 executing a specific command included in the device driver of the receiver 217 installed in the wireless receiving device 20.

The performance information transmission unit 22 transmits the performance information 2101 to the control device 10.

The wireless receiving unit 23 receives radio waves for wireless communication for each receiver 217 based on the instruction received from the control device 10.

The communication frame extraction unit 24 extracts a communication frame satisfying the extraction conditions specified by the control device 10 from the radio waves received by the wireless reception unit 23, and transmits the communication frame to the control device 10.

Next, various information handled by the measurement system 1 according to the present embodiment will be described.

FIG. 6 is a diagram showing an example of terminal information 1101.

The terminal information 1101 includes "terminal name", "MAC (Media Access Control) address", and "country setting" as items.

The value of the item "terminal name" is the name of the MFP2 which is the terminal to be inspected.

The value of the item "MAC address" is a character string indicating a MAC address for identifying the source of the communication frame transmitted from each terminal. Specifically, the MAC address is an identifier for uniquely identifying the transmitter of the radio wave of wireless communication included in the MFP2. Since the communication frame included in the radio wave of wireless communication includes the MAC address indicating the source, if the MAC address is used as the extraction condition, the communication frame transmitted from a specific source can be extracted. ..

The value of the item "country setting" is information indicating the country setting set in the MFP2. The item "country setting" functions as an item to be inspected in order to inspect whether the operation of each country setting of the MFP 2 to be inspected is normal or abnormal.

FIG. 7 is a diagram showing an example of the country setting information 1102.

The country setting information 1102 is information regarding the country setting of the MFP2. Specifically, the country setting information 1102 includes "country setting" and "channel" as items.

The value of the item "country setting" is information indicating the country setting set in the MFP2.

The value of the item "channel" is information indicating the channel used by the MFP 2 in the active scan of wireless communication.

The value of the item "channel" set in the country setting information 1102 may be generated based on the Radio Law of each country, but it does not necessarily have to be the same as the channel permitted by the Radio Law. For example, a channel with DFS (Dynamic Frequency Selection) regulations is not necessarily a channel that cannot be used under the Radio Law, but it is difficult to actually detect satellite radio waves and stop transmission of radio waves, so active scanning is used. It is desirable to exclude it from the channel to be used.

In addition, since the Radio Law of each country may be updated frequently, it is desirable that the country setting information 1102 is updated at any time by the designer. Therefore, it can be said that the frequency of inspections is high and there is a strong demand for efficiency.

FIG. 8 is a diagram showing an example of performance information 2101.

The performance information 2101 includes "receiver name", "channel" and "bandwidth" as items.

The value of the item "receiver name" is a name that identifies the receiver 217. If there is a possibility that the same name will be used across the wireless receiving devices 20, the control device 10 additionally stores an item indicating the name that identifies the wireless receiving device 20 after receiving the performance information 2101. It may be stored in the unit 11.

The value of the item "channel" is information indicating the channels that can be received for each receiver. For example, in the example shown in FIG. 8, the receiver "wlan0" cannot receive the radio wave of 14ch wireless communication, whereas the receiver "wls1" can receive the radio wave of 14ch wireless communication.

It should be noted that 14ch is a channel permitted by the current Radio Law in Japan, but is not permitted in many overseas countries. Therefore, among overseas products, there are actually receivers that cannot receive radio waves of 14ch wireless communication. Therefore, if a receiver that cannot receive the radio wave of 14ch wireless communication and a receiver that can receive the radio wave of 14ch wireless communication can be used in parallel, the range of selection of the receiver is widened and the convenience is improved.

The value of the item "bandwidth" is a numerical value indicating the receivable bandwidth in MHz units. The bandwidth of 40 MHz is premised on the channel bonding function. The channel bonding function is defined in IEEE802.11n and is a technique for combining a plurality of channels to use a bandwidth of 40 MHz.

In the following, an example of inspecting a terminal that does not use the channel bonding function, that is, a terminal that uses a bandwidth of 20 MHz is shown, but a terminal that uses the channel bonding function may be inspected. In that case, for example, the range of the combined frequency band may be set in the country setting information 1102 as the information indicating the combined channels.

Next, the operation of the measurement system 1 according to the present embodiment will be described.

FIG. 9 is a diagram showing an example of a flowchart of the wireless communication inspection process.

As a prerequisite, the K-number of channels C ₁ to be inspected to C _K is set by the operation of the user. For _{example, C 1 = 1ch, C 2} = 2ch, ···, is set as C K = 165ch.

In the following processing, measurement is performed both when the channel that should not be used as the active scan is not actually used and when the channel that should not be used as the active scan is actually used. System 1 determines that it is abnormal. Therefore, it is desirable that both channels that should be used as active scans and channels that should not be used as active scans be set for inspection.

Further, in the following description, the number of wireless receiving devices 20 is N, and the number of MFPs 2 which are terminals to be inspected is M. The total number of receivers 217 included in the N wireless receivers 20 is L. Each receiver 217 is hereinafter referred to as Y ₁ , Y ₂ , ..., Y _L. Further, each MFP 2 is hereinafter referred to as Z ₁ , Z ₂ , ..., Z _M.

The control device 10 starts the wireless communication inspection process by the user's operation or the like.

Next, the control device 10 sets the variable ch to C ₁ . The variable ch is used as a variable indicating the channel being processed in the subsequent processing (step S101).

The performance information acquisition unit 12 of the control device 10 acquires the performance information 2101. Specifically, the performance information transmitting unit 22 of each wireless receiving device 20 transmits the performance information 2101 to the control device 10, and the control device 10 receives the performance information 2101.

Then, the performance information acquisition unit 12 acquires the performance information 2101 by receiving from each wireless receiving device 20. As described above, when there is a possibility that the value of the item "receiver name" is duplicated, the performance information acquisition unit 12 may add information for identifying the wireless receiver 20 of the transmission source (step S102). ).

Next, the control device 10 designates a connection port. Specifically, the control device 10 transmits information indicating a standby port number and a communication port number to each wireless receiving device 20. The standby port number is a port number for receiving an instruction signal from the control device 10. The communication port number is a port number for transmitting data to the control device 10.

The control device 10 has preset numerical ranges for the standby port number and the communication port number, and is used for each wireless receiving device 20 in ascending order of numbers or randomly from the set numerical ranges. The numerical values of the standby port number and the communication port number to be used are determined (step S103).

Next, the reception control unit 13 executes the reception start process. Specifically, the reception control unit 13 designates a channel to be received by each receiver 217 and instructs the start of reception of radio waves for wireless communication. Details of the reception start process will be described later (step S104).

Next, the reception control unit 13 waits until the reception time elapses. The reception time is predetermined as a time sufficient to receive the active scan, for example 90 seconds (step S105).

Then, the reception control unit 13 instructs the end of reception. Specifically, the reception control unit 13 transmits a signal for instructing the end of reception of radio waves for wireless communication (hereinafter, referred to as a reception end instruction signal) for each receiver 217. Hereinafter, this process is referred to as a reception end process (step S106).

Next, the abnormality determination unit 14 executes the abnormality determination process. Specifically, the abnormality determination unit 14 instructs each wireless receiving device 20 to extract a communication frame necessary for determination. Then, the abnormality determination unit 14 determines whether each MFP 2 is normal or abnormal based on the extracted communication frame. Details of the abnormality determination process will be described later (step S107).

Next, the control device 10 determines whether or not the variable ch is (none) (step S108). When the variable ch is set to (none) in the reception start process in step S104, the control device 10 determines that the variable ch is (none) (step S108: Yes), and each wireless receiving device. Break the connection with 20. Hereinafter, this process is referred to as a connection disconnection process (step S109). After that, the control device 10 ends the wireless communication inspection process.

If the variable ch is not set to (none) in the reception start process in step S104, the control device 10 determines that the variable ch is not (none) (step S108: No), and performs the process in step S104. Return.

FIG. 10 is a diagram showing an example of a flowchart of the reception start processing.

When the reception control unit 13 starts the reception start process, the reception control unit 13 sets ch in the variable ch2. The variable ch2 is a variable indicating the channel being processed in the reception start processing. Hereinafter, the channel indicated by the variable ch2 is referred to as channel ch2 (step S201).

Next, the reception control unit 13 sets the receiver existence flag to "false". The receiver existence flag is a flag indicating that there is a receiver that can be received. The receiver presence flag is used in the determination process of step S215, which will be described later (step S202).

Next, the reception control unit 13 sets the reception flag to "false". The receiving flag is a flag used in the determination process of step S218 described later (step S203).

Then, the reception control unit 13 _{sets Y 1} in the variable y. The variable y is a variable indicating the receiver 217 to be processed in the following processing. Hereinafter, the receiver 217 indicated by the variable y is referred to as a receiver y (step S204).

Next, the reception control unit 13 determines whether or not the receiver y can receive the channel ch2. Specifically, the reception control unit 13 refers to the performance information 2101 and determines that reception is possible if the value of the item "channel" of the receiver y includes the channel ch2, and the channel ch2 is included. If it is not, it is determined that reception is not possible (step S205).

When the reception control unit 13 determines that the receiver y can receive the channel ch2 (step S205: Yes), the reception control unit 13 further determines whether or not the receiver y is receiving a channel other than the channel ch2.

Specifically, when the receiver y has already been instructed to start reception in the process of step S210 of the reception start process, the reception control unit 13 determines that the receiver y is receiving. In other cases, the reception control unit 13 determines that the receiver y is not receiving (step S206).

When the reception control unit 13 determines that the receiver y is receiving (step S206: Yes), the reception control unit 13 sets the reception flag to "true" (step S207).

When the reception control unit 13 determines that the receiver y cannot receive the channel ch2 (step S205: No), the reception control unit 13 proceeds to the process of step S208.

Next, the reception control unit 13 _{determines whether or not the receiver y is Y L} (step S208). When the reception control unit 13 determines that the receiver y is not Y _L (step S208: No), the reception control unit 13 sets the next receiver of the receiver y in the variable y. For example, when y is Y ₁ , the variable y _{is set to Y 2} (step S209). Then, the reception control unit 13 returns to the process of step S205.

Further, in the process of step S206, when the reception control unit 13 determines that the receiver y is not receiving (step S206: No), the reception control unit 13 instructs the receiver y to start receiving the channel ch2. Specifically, the reception control unit 13 sends a signal for instructing the start of reception (hereinafter, referred to as a reception start instruction signal) including the designation of the receiver y and the channel ch2 to the wireless receiver 20 including the receiver y. Transmit (step S210).

Next, the reception control unit 13 sets the receiver existence flag to "true" (step S211).

Subsequently, the reception control unit 13, the variable ch2 determines whether a _{C K} (step S212). Reception control unit 13, the variable ch2 is determined to be _{C K} (step S212: Yes), sets (none) in the variable ch. This means that the instruction to start reception of all channels is completed (step S213).

Reception control unit 13, the variable ch2 is determined not _{C K} (step S212: No), sets the next channel in the channel ch2 to the variable ch (step S214). For example, if ch = C ₁ and ch 2 = C ₃ , then ch = C ₄ .

Further, in the process of step S208, when the reception control unit 13 determines that the receiver y is Y _L (step S208: Yes), the reception control unit 13 executes the following process of step S215. Further, after the processing of step S213 and step S214, the following processing of step S215 is executed.

The reception control unit 13 determines whether or not the receiver existence flag is “true”. When there is a receivable receiver y for the channel ch2 being processed, that is, when "true" is set in the receiver existence flag by the processing of step S211, the reception control unit 13 has a receiver. It is determined that the flag is "true" (step S215).

Reception control unit 13, the receiver present flag is determined to be "true" (step S215: Yes), the variable ch2 determines whether a _{C K} (step S216). Then, the reception control unit 13, the variable ch2 is determined not _{C K} (step S216: No), sets the next channel in the channel ch2 to the variable ch2 (step S217), the process returns to step S202.

The reception control unit 13, the variable ch2 is determined to be _{C K} (step S216: Yes), terminates the reception start processing returns to the wireless communication inspection process, executes the process of step S105.

In the process of step S215, when the reception control unit 13 determines that the receiver existence flag is not "true" (step S215: No), it further determines whether or not the reception flag is "true". In fact, capable of receiving the receiver the channel ch2 is present at least one in the Y ₁ to Y _L, and if receivable receiver are all being received, the reception flag is "true (Step S218).

When the reception control unit 13 determines that the reception flag is "true" (step S218: Yes), the reception control unit 13 ends the reception start process, returns to the wireless communication inspection process, and executes the process of step S105.

Further, when the reception control unit 13 determines that the reception flag is not "true" (step S218: No), the wireless communication inspection process ends abnormally. This receivable receiver channel ch2 is due to the absence in the _{Y 1} to _{Y L,} which means that it can not test for channel ch2 (step S219).

Reception control unit 13, by the reception start processing, from the channel C ₁ in order to start receiving the receivable receiver 217. Then, when there is no receiver 217 capable of starting reception, the reception start process is temporarily terminated, and the process of step S105 of the wireless communication inspection process is executed. Then when executing the reception starting process again instructs the start of reception to the receiver 217 capable of receiving the order from the the next channel of the received channel to C _N.

FIG. 11 is a diagram showing an example of a flowchart of the abnormality determination process.

Abnormality determination unit 14 starts the abnormality determination process in step S107 in the wireless communication inspection process, to set the Y ₁ to the variable y. The variable y2 is a variable indicating the receiver 217 being processed in the abnormality determination process. Hereinafter, the receiver 217 indicated by the variable y2 is referred to as a receiver y2 (step S301).

Next, the abnormality determination unit 14 _{sets Z 1} in the variable z. The variable z is a variable indicating the terminal (MFP2) to be determined in the abnormality determination process. Hereinafter, the terminal indicated by the variable z is referred to as a terminal z (step S302).

Subsequently, the abnormality determination unit 14 determines the extraction conditions for the communication frame transmitted from the terminal z. Specifically, the abnormality determination unit 14 refers to the terminal information 1101 and determines the extraction conditions of "source MAC address = terminal z MAC address" and "frame type = active scan" (step S303). ).

Next, the abnormality determination unit 14 instructs the wireless receiver 20 including the receiver y2 to extract the communication frame received by the receiver y2. Specifically, a signal indicating the extraction condition determined in step S303 (hereinafter, referred to as an extraction condition signal) is transmitted to the wireless receiver 20 including the receiver y2 (step S304).

Next, the abnormality determination unit 14 acquires the number of extracted frames. Specifically, the wireless receiving device 20 receives the extraction condition signal transmitted in step S304, and extracts a communication frame satisfying the extraction condition from the received communication frame. Then, the number of frames of the extracted communication frames is totaled, and the extraction result information indicating the totaled number of frames is transmitted to the control device 10.

The abnormality determination unit 14 of the control device 10 acquires the number of extracted communication frames by receiving the extraction result information from the wireless reception device 20 (step S305).

Next, the abnormality determination unit 14 determines whether or not the channel received by the receiver y2 is included in the country-set channel. Specifically, the abnormality determination unit 14 specifies the country setting of the terminal z with reference to the terminal information 1101. Then, the abnormality determination unit 14 refers to the country setting information 1102 and acquires a list of the specified country setting channels. Subsequently, the abnormality determination unit 14 determines whether or not the channel received by the receiver y2 is included in the list of acquired channels (step S306).

When the abnormality determination unit 14 determines that the channel received by the receiver y2 is included in the country-set channel (step S306: Yes), the abnormality determination unit 14 further determines whether or not the number of frames is larger than 0 (step S307).

When the abnormality determination unit 14 determines that the number of frames is larger than 0 (step S307: Yes), the abnormality determination unit 14 sets the determination result flag to "OK". The determination result flag is flag information indicating the result of the abnormality determination process, and is determined for each terminal and each channel (step S308).

Further, when the abnormality determination unit 14 determines that the number of frames is not larger than 0, that is, 0 (step S307: No), the determination result flag is set to "NG". If the channel received by receiver y2 is included in the country-set channel, terminal z should transmit an active scan communication frame. Therefore, the abnormality determination unit 14 determines that the number of frames is 0 as an abnormality (step S309).

In the process of step S306, when the abnormality determination unit 14 determines that the channel received by the receiver y2 is not included in the country-set channel (step S306: No), it further determines whether or not the number of frames is 0. (Step S310).

When the abnormality determination unit 14 determines that the number of frames is 0 (step S310: Yes), the abnormality determination unit 14 sets the determination result flag to "OK" (step S311).

If the abnormality determination unit 14 determines that the number of frames is not 0 (step S310: No), the abnormality determination unit 14 sets the determination result flag to "NG". If the channel received by receiver y2 is not included in the country settings, terminal z should not transmit active scan communication frames. Therefore, the abnormality determination unit 14 determines that the number of frames is not 0 as an abnormality (step S312).

Next, the abnormality determination section 14 determines whether or not the terminal z is _{Z M} (step S313). When the abnormality determination unit 14 determines that the terminal z is not Z _M (step S313: No), the abnormality determination unit 14 sets the terminal next to z in the variable z and returns to the process of step S303 (step S314).

Further, when the abnormality determination unit 14 determines that the terminal z is Z _M (step S313: Yes), the abnormality determination unit 14 further determines whether or not _{the receiver y2 is Y L (step S315).}

When the abnormality determination unit 14 determines that the receiver y2 is not Y _L (step S315: No), the abnormality determination unit 14 sets the next terminal of y2 in the variable y2 and returns to the process of step S302 (step S316).

Further, when the abnormality determination unit 14 determines that the receiver y2 is Y _L (step S315: Yes), the abnormality determination unit 14 ends the abnormality determination process, returns to the wireless communication inspection process, and executes the process of step S108.

The abnormality determination unit 14 uses this abnormality determination process both when the channel that should not be used as the active scan is not actually used and when the channel that should not be used as the active scan is actually used. In the case of, it is judged as abnormal.

For the sole purpose of not violating laws and regulations, it may be determined that an abnormality is made only when a channel that should not be used as an active scan is actually used. In that case, the abnormality determination unit 14 may set the determination result flag to "OK" in the process of step S309.

Further, the determination result flag is determined for each terminal and each channel. This makes it possible to grasp which terminal has an abnormality in the operation of transmitting the radio wave of the wireless communication of which channel. On the other hand, the determination result flag for each terminal, which does not specify the channel, may be determined. In that case, the abnormality determination unit 14 sets the determination result flag for each terminal to "OK" when all the determination result flags for each channel are "OK", and the determination result flag for each channel includes "NG". In that case, the determination result flag for each terminal may be set to "OK".

An example of the sequence of the measurement system 1 according to the present invention will be described below.

FIG. 12 is a diagram showing an example of a sequence of performance information acquisition processing and connection port designation processing.

When there are a plurality of wireless receiving devices 20, the performance information acquisition processing in step S102 and the connection port designation processing in step S103 of the wireless communication inspection process are executed between the control device 10 and each wireless receiving device 20. ..

For example, when N is 2, that is, when the wireless receiving device 20-1 and the wireless receiving device 20-2 are present, the wireless receiving device 20-1 or the wireless receiving device 20-2 performs as shown in FIG. When the information is generated and transmitted to the control device 10, the control device 10 updates the performance information 2101 stored in the storage unit 21.

When the number N of the wireless receiving devices 20 is preset in the control device 10 and the performance information acquisition process in step S102 and the connection port designation process in step S103 are executed with the N wireless receiving devices 20, the following Proceed to the process of step S104.

Alternatively, the control device 10 may accept transmission of performance information from the wireless receiving device 20 at any time because the number N of the wireless receiving device 20 is not set in advance. In that case, the information about the wireless receiving device 20 of the connection destination may be stored in the storage unit 21 and updated at any time.

FIG. 13 is a diagram showing an example of a sequence of reception start processing.

When there are a plurality of wireless receiving devices 20, the reception start process in step S104 of the wireless communication inspection process is executed between the control device 10 and each of the wireless receiving devices 20. When there are a plurality of receivers, a reception start instruction signal is transmitted from the control device 10 for each receiver.

For example, a case where the wireless receiver 20-1 includes the receiver Y ₁ and the receiver Y ₂ and the wireless receiver 20-2 includes the receiver Y ₃ and the receiver Y ₄ will be illustrated.

In this case, as shown in FIG. 13, when the receiver Y ₁ is selected as a receivable receiver, the control device 10 transmits a reception start instruction signal to the receiver _{Y 1 to the wireless receiver 20-1.} Further, when the control device 10 selects the receiver _{Y 2} as a receivable receiver, the control device 10 transmits a reception start instruction signal to the receiver _{Y 2 to the wireless reception device 20-1.}

Further, when the receiver Y ₃ is selected as a receivable receiver, the _{reception start instruction signal for the receiver Y 3} is transmitted to the wireless receiver 20-2. Further, when the control device 10 selects the receiver _{Y 4} as a receivable receiver, the control device 10 transmits a reception start instruction signal to the receiver _{Y 4 to the wireless reception device 20-2.}

FIG. 14 is a diagram showing an example of a sequence of reception end processing.

When there are a plurality of wireless receiving devices 20, the reception termination process in step S106 of the wireless communication inspection process is executed between the control device 10 and each of the wireless receiving devices 20. When there are a plurality of receivers, a reception end instruction signal is transmitted from the control device 10 for each receiver.

FIG. 15 is a diagram showing an example of a sequence of abnormality determination processing.

When there are a plurality of wireless receiving devices 20, the transmission of the extraction condition signal in the abnormality determination process of step S107 of the wireless communication inspection process is executed between the control device 10 and each wireless receiving device 20. When there are a plurality of receivers, the extraction condition signal is transmitted from the control device 10 for each receiver.

The wireless receiving device 20 executes extraction and aggregation of communication frames of each receiver to acquire the number of frames, and transmits the extraction result information indicating the acquired number of frames to the control device 10.

FIG. 16 is a diagram showing an example of a sequence of connection disconnection processing.

When there are a plurality of wireless receiving devices 20, the connection disconnection process in step S109 of the wireless communication inspection process is executed between the control device 10 and each of the wireless receiving devices 20.

For example, when N is 2, that is, when the wireless receiving device 20-1 and the wireless receiving device 20-2 are present, as shown in FIG. 16, the control device 10 is the wireless receiving device 20-1 and the wireless receiving device 20-1. A signal for instructing the end of processing (processing end instruction signal) is transmitted to each of 20-2. When the wireless receiving device 20-1 and the wireless receiving device 20-2 receive the processing end instruction signal, they transmit a disconnection signal for disconnecting the connection to the control device 10.

According to the measurement system 1 according to the present embodiment, by selecting a receiver to be received based on the performance information of the receiver, a plurality of receivers having different receivable channels can be used in parallel. Thereby, the efficiency of inspection of the terminal that transmits the radio wave of wireless communication can be improved.

In addition, by extracting communication frames according to the type of communication frame and the MAC address of the source, inspection of the terminal that transmits the radio wave of wireless communication is performed even in an environment where wireless communication is performed for purposes other than the intended purpose. be able to. As a result, it is not necessary to prepare a special environment such as an anechoic chamber where there is no unintended wireless communication, so that the labor for inspection is reduced.

In the present embodiment, an example is shown in which the measurement system 1 includes a plurality of wireless receivers 20, and each wireless receiver 20 includes a plurality of receivers 217. Each wireless receiving device 20 may include one receiver 217 or a plurality of receivers 217.

Further, if the measurement system 1 includes a plurality of receivers 217 as a whole, the number of wireless receivers 20 may be one or a plurality.

Further, the control device 10 may include each function of the wireless receiving device 20 described above, and may include a receiver 217. In that case, if the control device 10 has each function of the measurement system 1 described above, the wireless receiving device 20 may not be provided.

The country setting information 1102 according to the present embodiment is an example of information that serves as a reference for determining whether or not the operation of the terminal to be inspected is normal. In the case of the 2.4 GHz band, for example, the available channels of wireless communication differ depending on the country, such as 1-14ch in Japan, 1-11ch in the United States, and 1-13ch in Europe. There is a high need to inspect operation.

In addition, there are many channels that can be used in the 5 GHz band, and it takes time to execute the inspection for each channel. Therefore, there is a growing demand for efficient inspections.

However, the reference information for determining whether or not the operation of the terminal is normal is not limited to the country setting, and any other information may be used as long as it is the reference information for inspecting the operation of the terminal.

Further, the control device 10 or the wireless receiving device 20 according to the present embodiment is, for example, a PJ (Projector: projector), an output device such as a digital signage, a HUD (Head Up Display) device, an industrial machine, a medical device, a network home appliance, It may be a car (Connected Car), a notebook PC (Personal Computer), a mobile phone, a tablet terminal, a game machine, a PDA (Personal Digital Assistant), a digital camera, a wearable PC, a desktop PC, or the like.

Each function of the embodiment described above can be realized by one or more processing circuits. Here, the "processing circuit" in the present specification is a processor programmed to execute each function by software such as a processor implemented by an electronic circuit, or a processor designed to execute each function described above. It shall include devices such as ASIC (Application Specific Integrated Circuit), DSP (Digital Signal Processor), FPGA (Field Programmable Gate Array) and conventional circuit modules.

Although the present invention has been described above based on each embodiment, the present invention is not limited to the requirements shown in the above embodiments. With respect to these points, the gist of the present invention can be changed without impairing the gist of the present invention, and can be appropriately determined according to the application form thereof.

1 Measurement system 2,2-1,2, ..., 2-M MFP
10 Control device 11 Storage unit 12 Performance information acquisition unit 13 Reception control unit 14 Abnormality determination unit 20, 20-1, 20-2, ..., 20-N wireless receiver 21 Storage unit 22 Performance information transmission unit 23 Wireless reception Part 24 Communication frame extraction part 30 Network 217,217-1,217-2 Receiver 1101 Terminal information 1102 Country setting information 2101 Performance information

JP-A-2017-169003

Claims (8)

A performance information acquisition unit that acquires performance information indicating the frequency band in which radio waves can be received for each of a plurality of receivers that receive radio waves transmitted by wireless communication from a terminal.
A receiver that receives a designation of a frequency band and includes the designated frequency band in the performance information is provided with a reception control unit that receives a signal transmitted from the terminal.
Control device. In order to extract a communication frame from the radio wave received by the receiver, the reception control unit sets an extraction condition in which the type of the communication frame and the identifier for identifying the source of the wireless communication are specified. Sending to a device including the receiver,
The control device according to claim 1. An abnormality determination unit for determining whether the operation of the terminal is normal or abnormal based on the extraction result of the communication frame and the frequency band of the wireless communication transmitted from the terminal is further provided.
The control device according to claim 2. The abnormality determination unit determines based on the terminal information indicating the country setting of the terminal and the country setting information indicating the frequency band to be used for each country setting.
The control device according to claim 3. With multiple receivers that receive wireless communication,
A performance information acquisition unit that acquires performance information indicating the frequency band in which radio waves can be received for each of a plurality of receivers that receive radio waves transmitted by wireless communication from a terminal.
A receiver that receives a designation of a frequency band and includes the designated frequency band in the performance information is provided with a reception control unit that receives a signal transmitted from the terminal.
Measurement system. Based on the instruction from the reception control unit, a communication frame satisfying the extraction conditions in which the type of the communication frame and the identifier for identifying the source of the wireless communication are specified from the radio waves received by the receiver is selected. Further equipped with a communication frame extraction unit for extraction,
The measuring system according to claim 5. The control device
For each of the multiple receivers that receive radio waves transmitted by wireless communication from the terminal, performance information indicating the frequency band in which radio waves can be received is acquired, and performance information is acquired.
In response to the designation of the frequency band, the receiver whose designated frequency band is included in the performance information receives the signal transmitted from the terminal.
Control method. On the computer
For each of the multiple receivers that receive radio waves transmitted by wireless communication from the terminal, a step to acquire performance information indicating the frequency band in which radio waves can be received, and
A step of receiving a designation of a frequency band and causing a receiver whose designated frequency band is included in the performance information to receive a signal transmitted from the terminal.
A program to execute.

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