Measurement device and method for limiting its parameters

Abstract

To provide a measuring device that can suppress parameter setting errors by limiting the configurable range of parameters according to the functions that can be performed. [Solution] The system includes measuring instruments 51A and 51B, which have the same appearance but different functionalities, and which measure SISO communication. It also includes an integrated control device 55 that controls the measuring instruments 51A and 51B and measures the wireless signals transmitted and received by the DUT1, which performs MIMO communication. The integrated control device 55 collects the functionalities of each of the measuring instruments 51A and 51B and limits the setting range of the MIMO communication parameters based on the functionalities of the measuring instruments 51A and 51B.

Description

Technical Field

[0001] The present invention relates to a measuring device, and more particularly to a measuring device that measures radio signals transmitted and received by a communication device operating according to the communication standard of a wireless local area network (LAN).

Background Art

[0002] With the development of information and communication technologies, various wireless communication technologies have been developed. Among these, communication standards related to wireless LAN technology include, for example, IEEE (Institute of Electrical and Electronics Engineers) 802.11ac (VHT: Very High Throughput) and IEEE 802.11ax (HE: High Efficiency).

[0003] In wireless communication of a wireless LAN, a SISO (Single Input Single Output) method in which both the transmission side and the reception side communicate using a single antenna, a MIMO (Multiple Input Multiple Output) method in which both the transmission side and the reception side communicate using a plurality of antennas, etc. are used.

[0004] [[ID=2__]]

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] Such measuring instruments may not be distinguishable by appearance, but they have multiple hardware types (hereinafter also referred to as "hardware types") that are hardware-incompatible and have different functions.

[0007] When measuring MIMO communication using a combination of measuring instruments with different hardware types, the available functions may be limited depending on the combination of hardware types.

[0008] Therefore, it is necessary to set the parameters for MIMO communication while being mindful of the functions that can be executed.

[0009] However, setting a parameter to a value outside the configurable range without being aware of the available functions results in a parameter error, but it was difficult to determine whether the cause was a user error or an error due to an available function.

[0010] Because hardware types cannot be distinguished by their appearance, it was time-consuming to determine the cause of a malfunctioning function, resulting in reduced usability.

[0011] Therefore, the present invention aims to provide a measuring device that can suppress parameter setting errors by limiting the settable range of parameters according to the executable function. [Means for solving the problem]

[0012] The present invention provides a measuring device (50) comprising: a plurality of measuring instruments (51A, 51B) having the same appearance but different executable functions for measuring SISO communication; and an integrated control device (55) that controls the plurality of measuring instruments to perform measurements in response to wireless signals transmitted and received by a device under test (1) performing MIMO communication, wherein the integrated control device collects the executable functions of each of the plurality of measuring instruments and limits the setting range of MIMO communication parameters based on the executable functions of the plurality of measuring instruments.

[0013] This configuration limits the parameter settings for MIMO communication to match the functional capabilities of each of the multiple measuring instruments. Therefore, errors in parameter settings can be minimized.

[0014] Furthermore, in the measuring device of the present invention, the integrated control device makes it impossible to set parameters related to functions that cannot be executed, based on the executable functions of the multiple measuring devices, on the parameter setting screen for MIMO communication.

[0015] This configuration ensures that, in the MIMO communication parameter setting screen, parameters related to functions that cannot be performed are unavailable for setting, based on the executable functions of each of the multiple measuring instruments. This reduces the likelihood of errors in parameter setting.

[0016] Furthermore, in the measuring device of the present invention, the integrated control device displays a message on the parameter setting screen for MIMO communication prompting the user to check the executable functions of the measuring device for parameters that cannot be set due to an unexecutable function.

[0017] This configuration displays a message on the MIMO communication parameter setting screen prompting the user to check the executable functions of the measuring instrument for parameters that cannot be set due to unexecutable functions. This clearly indicates that a parameter cannot be set due to an unexecutable function, thus reducing the likelihood of setting errors.

[0018] Furthermore, the parameter limiting method of the present invention is a parameter limiting method for a measuring device (50) comprising: a plurality of measuring instruments (51A, 51B) having the same appearance but different executable functions for measuring SISO communication; and an integrated control device (55) that controls the plurality of measuring instruments to perform measurements with respect to wireless signals transmitted and received by a device under test (1) performing MIMO communication, the method comprising the steps of: collecting the executable functions of each of the plurality of measuring instruments; and limiting the setting range of MIMO communication parameters based on the executable functions of the plurality of measuring instruments.

[0019] This configuration limits the parameter settings for MIMO communication to match the functional capabilities of each of the multiple measuring instruments. Therefore, errors in parameter settings can be minimized. [Effects of the Invention]

[0020] The present invention can provide a measuring device that can suppress parameter setting errors by limiting the configurable range of parameters according to the executable function. [Brief explanation of the drawing]

[0021] [Figure 1] Figure 1 is a block diagram of a measuring device according to one embodiment of the present invention. [Figure 2] Figure 2 shows examples of parameter setting screens for the STBC and NSTS of a measuring device according to one embodiment of the present invention. Figure 2(a) shows an example of a setting screen for SISO communication. Figure 2(b) shows an example of a setting screen for the STBC of MIMO communication. Figure 2(c) shows an example of a setting screen for the NSTS of MIMO communication. [Figure 3]FIG. 3 is a diagram showing an example of a PPDU type parameter setting screen of a measurement device according to an embodiment of the present invention. FIG. 3(a) is a diagram showing an example of a setting screen for SISO mode communication, FIG. 3(b) is a diagram showing an example of a setting screen for MIMO mode communication, and FIG. 3(c) is a diagram showing an example of a setting screen when the information icon of the setting screen for MIMO mode communication is selected. [Figure 4] FIG. 4 is a diagram showing an example of a Channel Band parameter setting screen of a measurement device according to an embodiment of the present invention. FIG. 4(a) is a diagram showing an example of a setting screen for SISO mode communication, and FIG. 4(b) is a diagram showing an example of a setting screen when the information icon of the setting screen for MIMO mode communication is selected. [Figure 5] FIG. 5 is a diagram showing an example of a Primary Channel parameter setting screen of a measurement device according to an embodiment of the present invention. FIG. 5(a) is a diagram showing an example of a setting screen for SISO mode communication, FIG. 5(b) is a diagram showing an example of a setting screen for MIMO mode communication, and FIG. 5(c) is a diagram showing an example of a setting screen when the information icon of the setting screen for MIMO mode communication is selected.

Mode for Carrying Out the Invention

[0022] Hereinafter, with reference to the drawings, a measurement device according to an embodiment of the present invention will be described in detail. As shown in FIG. 1, the measurement device 50 according to the present embodiment is configured to connect to a DUT1 as a device under test via a wireless LAN and perform measurement of the DUT1. In the present embodiment, the measurement device 50 operates as, for example, a wireless LAN master unit (AP: Access Point), and the DUT1 operates as a wireless LAN slave unit (STA: STAtion). Further, the measurement device 50 communicates with the DUT1 based on a communication standard compliant with IEEE802.11ax, IEEE802.11be, or the like.

[0023] <The original text to be translated is as below which wraped by : 図3は、本発明の一実施形態に係る測定装置のPPDUタイプのパラメータ設定画面の例を示す図であり、図3(a)は、SISO方式の通信の設定画面の例を示す図であり、図3(b)は、MIMO方式の通信の設定画面の例を示す図であり、図3(c)は、MIMO方式の通信の設定画面の情報アイコンが選択された時の設定画面の例を示す図である。 [Figure 4] 図4は、本発明の一実施形態に係る測定装置のChannel Bandのパラメータ設定画面の例を示す図であり、図4(a)は、SISO方式の通信の設定画面の例を示す図であり、図4(b)は、MIMO方式の通信の設定画面の情報アイコンが選択された時の設定画面の例を示す図である。 [Figure 5] 図5は、本発明の一実施形態に係る測定装置のPrimary Channelのパラメータ設定画面の例を示す図であり、図5(a)は、SISO方式の通信の設定画面の例を示す図であり、図5(b)は、MIMO方式の通信の設定画面の例を示す図であり、図5(c)は、MIMO方式の通信の設定画面の情報アイコンが選択された時の設定画面の例を示す図である。

発明を実施するための形態

[0022] 以下、図面を参照して、本発明の実施形態に係る測定装置について詳細に説明する。 図1に示すように、本実施形態に係る測定装置50は、被測定装置としてのDUT1と無線LANによる接続を行なってDUT1の測定を行なうものである。本実施形態では、測定装置50は、例えば、無線LAN親機(AP:Access Point)として動作し、DUT1は無線LAN子機(STA:STAtion)として動作する。また、測定装置50は、IEEE802.11axや、IEEE802.11beなどに準拠する通信規格に基づいて、DUT1と通信する。

[0023] FIG. 3 is a diagram showing an example of a PPDU type parameter setting screen of a measurement device according to an embodiment of the present invention. FIG. 3(a) is a diagram showing an example of a setting screen for SISO mode communication, FIG. 3(b) is a diagram showing an example of a setting screen for MIMO mode communication, and FIG. 3(c) is a diagram showing an example of a setting screen when the information icon of the setting screen for MIMO mode communication is selected. [Figure 4] FIG. 4 is a diagram showing an example of a Channel Band parameter setting screen of a measurement device according to an embodiment of the present invention. FIG. 4(a) is a diagram showing an example of a setting screen for SISO mode communication, and FIG. 4(b) is a diagram showing an example of a setting screen when the information icon of the setting screen for MIMO mode communication is selected. [Figure 5] FIG. 5 is a diagram showing an example of a Primary Channel parameter setting screen of a measurement device according to an embodiment of the present invention. FIG. 5(a) is a diagram showing an example of a setting screen for SISO mode communication, FIG. 5(b) is a diagram showing an example of a setting screen for MIMO mode communication, and FIG. 5(c) is a diagram showing an example of a setting screen when the information icon of the setting screen for MIMO mode communication is selected.

Mode for Carrying Out the Invention

[0022] Hereinafter, with reference to the drawings, a measurement device according to an embodiment of the present invention will be described in detail. As shown in FIG. 1, the measurement device 50 according to the present embodiment is configured to connect to a DUT1 as a device under test via a wireless LAN and perform measurement of the DUT1. In the present embodiment, the measurement device 50 operates as, for example, a wireless LAN master unit (AP: Access Point), and the DUT1 operates as a wireless LAN slave unit (STA: STAtion). Further, the measurement device 50 communicates with the DUT1 based on a communication standard compliant with IEEE802.11ax, IEEE802.11be, or the like.

[0023] In this embodiment, the measuring device 50 includes two measuring instruments 51A and 51B, a router 54, and an integrated control device 55. Measuring instruments 51A and 51B are connected to the integrated control device 55 via the router 54 by a network 56, such as Ethernet®.

[0024] The integrated control unit 55 is configured, for example, by a personal computer (PC). The integrated control unit 55 communicates with the measuring instruments 51A and 51B via the network 56 through the router 54 and controls both of them comprehensively. Specifically, the integrated control unit 55 sets one of the measuring instruments 51A or 51B as the primary and the other as the secondary, and also performs control such as issuing a command to the primary side to start measuring DUT1. Figure 1 shows an example in which the integrated control unit 55 has set measuring instrument 51A as the primary and measuring instrument 51B as the secondary.

[0025] In this embodiment, the DUT1 to be measured by the measuring device 50 uses MIMO communication and has, for example, two antennas. In contrast, the measuring instruments 51A and 51B that make up the measuring device 50 are each configured to use SISO communication.

[0026] In other words, the measuring device 50 is configured such that two SISO measuring instruments 51A and 51B transmit a single stream of information, modulated using a predetermined modulation scheme (e.g., BPSK, QPSK, etc.), simultaneously and in parallel from their respective antennas. The DUT1 receives this information using multiple antennas (two in this embodiment) as if it were MIMO information, and sends the response frame back to the measuring device 50 in MIMO mode, thereby enabling the measurement of the DUT1.

[0027] Furthermore, in order to enable measuring instruments 51A and 51B to simultaneously transmit single-stream signals in parallel, measuring instrument 51A, which is the primary of the two, controls the synchronization of the transmission and reception timing between measuring instrument 51A and measuring instrument 51B. For this reason, in the measuring device 50, after the integrated control unit 55 issues a command to measuring instrument 51A to start measuring DUT1, it does not need to control measuring instrument 51B. With this configuration of the measuring device 50, although communication with DUT1 using the MIMO method is not possible, it is possible to measure DUT1 using the MIMO method while simultaneously transmitting and receiving two streams of information using the SISO method. It is assumed that measuring instruments 51A and 51B could be products such as the MT8862A, a wireless LAN measuring instrument manufactured by Anritsu Corporation.

[0028] In the measuring device 50, the measuring instrument 51A comprises a control unit 60A, a transmission data generation unit 70A, a frame generation unit 71A, a transmission / reception unit 72A, a measurement unit 75A, and a display unit 76A. The measuring instrument 51A includes a microcomputer (not shown) equipped with a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), an input interface unit to which various interfaces are connected, and an output interface unit. The measuring instrument 51A is configured to make the microcomputer function as the aforementioned functional unit of the measuring instrument 51A by executing a control program pre-stored in the ROM.

[0029] In measuring instrument 51A, the control unit 60A controls the entire measuring instrument 51A, and also controls measuring instrument 51B to synchronize with the self-measuring instrument.

[0030] The transmission data generation unit 70A generates the transmission data set by the user and outputs it to the frame generation unit 71A.

[0031] The frame generation unit 71A generates (configures) a frame that includes data from the transmission data generation unit 70A and outputs it to the transmission / reception unit 72A.

[0032] The transmitting / receiving unit 72A comprises a transmitting unit 73A and a receiving unit 74A, and is configured to establish a wireless connection with the DUT1 based on a communication standard compliant with, for example, IEEE 802.11be. After the wireless connection is established, the transmitting / receiving unit 72A transmits and receives various measurement-related data to and from the DUT1.

[0033] The transmitting unit 73A includes an encoding circuit, a modulation circuit, a DAC (digital-to-analog converter), an upconverter, a transmitting antenna, etc. (not shown), and performs processing such as digital modulation and upconversion on the frame generated by the frame generation unit 71A, and transmits it to the DUT1 via the antenna.

[0034] The receiving unit 74A, which is not shown in the diagram, includes a receiving antenna, a downconverter, an ADC (analog-to-digital converter), a demodulation circuit, a decoding processing circuit, etc., and extracts the data to be measured from the frames that are determined to be the target of measurement from the frames received from the DUT1, and outputs it to the measurement unit 75A.

[0035] Similarly, the measuring device 51B includes a control unit 60B, a transmission data generation unit 70B, a frame generation unit 71B, a transmission / reception unit 72B, a measurement unit 75B, and a display unit 76B. The control unit 60B controls the entire measuring device 51B under the control of the control unit 60A of the measuring device 51A.

[0036] In the measuring device 51B, the transmission data generation unit 70B, frame generation unit 71B, transmission / reception unit 72B, measurement unit 75B, and display unit 76B basically have the same configuration as the identical functional units in the measuring device 51A, namely the transmission data generation unit 70A, frame generation unit 71A, transmission / reception unit 72A, measurement unit 75A, and display unit 76A.

[0037] Like measuring instrument 51A, measuring instrument 51B also includes a microcomputer (not shown) equipped with a CPU, ROM, RAM, input interface section, and output interface section to which various interfaces are connected. In measuring instrument 51B as well, the microcomputer is made to function as the aforementioned functional section of measuring instrument 51B by executing a control program pre-stored in the ROM.

[0038] In the measuring device 50, the difference between measuring instrument 51A and measuring instrument 51B is that the former acts as the primary, controlling the synchronization of the transmission timing between the transmitter 73A of measuring instrument 51A and the transmitter 73B of measuring instrument 51B, and also controlling the synchronization of the reception timing between the receiver 74A of measuring instrument 51A and the receiver 74B of measuring instrument 51B, while the latter acts as the secondary, following the synchronization control performed by the former.

[0039] To realize the primary and secondary relationship described above, the control unit 60A controls the entire measuring instrument 51A and also controls the control unit 60B by providing a transmit synchronization trigger signal and a receive synchronization trigger signal. The transmit synchronization trigger signal is a control signal that causes the control unit 60B to synchronize the transmit unit 73B with the transmit unit 73A to perform the transmit operation, and the receive synchronization trigger signal is a control signal that causes the control unit 60B to synchronize the receive unit 74B with the receive unit 74A to perform the receive operation.

[0040] The integrated control unit 55, in accordance with instructions input from an operating unit such as a keyboard or mouse (not shown), displays a screen for setting communication parameters for measurement on a display unit such as a monitor (not shown) and allows the user to input the information necessary for measurement. The integrated control unit 55 also transmits instructions to the control unit 60A of the measuring instrument 51A in accordance with the instructions input from the operating unit, establishes communication with the set parameters, performs the measurement, and displays the results on the display unit.

[0041] In this embodiment, measuring instruments 51A and 51B have identical casings and are indistinguishable by appearance, but there are multiple hardware types with different hardware configurations, and the available functions differ depending on the hardware type. Note that "identical" includes instruments that are exactly the same in appearance or so similar that they are difficult to distinguish.

[0042] Hardware types include, for example, the "5GRF," which can communicate in accordance with the IEEE 802.11n / 11ac / 11ax / 11be standards but does not support frequency bandwidths of 160MHz and 320MHz; the "6GRF," which can communicate in accordance with the IEEE 802.11n / 11ac / 11ax / 11be standards but does not support frequency bandwidth of 320MHz; and the "BW320M," which can communicate in accordance with the IEEE 802.11n / 11ac / 11ax / 11be standards and supports frequency bandwidth of 320MHz.

[0043] If the primary device's hardware type is 5GRF, and the secondary device's hardware type is also 5GRF, then MIMO functionality compliant with the IEEE 802.11n / 11ac standard will be enabled.

[0044] When both the primary and secondary devices have a 6GRF hardware type, or when the primary device has a BW320M hardware type and the secondary device has a 6GRF hardware type, MIMO functionality is enabled even if it does not support a frequency bandwidth of 320MHz compliant with the IEEE802.11n / 11ac / 11ax / 11be standards.

[0045] If both the primary and secondary devices are of the BW320M hardware type, MIMO functionality supporting a frequency bandwidth of 320MHz compliant with IEEE802.11n / 11ac / 11ax / 11be standards will be enabled.

[0046] Thus, the functions that can be performed by MIMO communication are limited by the functions that can be performed by the primary and secondary units. For this reason, it was necessary to set the parameters of MIMO communication while being aware of the functions that can be performed by the primary or secondary unit.

[0047] Setting a parameter to a value outside the configurable range without considering the executable functions of the primary or secondary machine results in a parameter error. However, it was difficult to determine whether the cause was a user error or an error related to the executable functions of the primary or secondary machine.

[0048] Therefore, the integrated control device 55 of this embodiment collects the executable functions of the primary measuring instrument 51A and the secondary measuring instrument 51B, and limits the setting range of the MIMO communication parameters to match the executable functions of the primary measuring instrument 51A and the secondary measuring instrument 51B.

[0049] The integrated control unit 55, for example, determines the setting range for the STBC (Space Time Block Coding) and NSTS (Number of Space Time Streams) parameters of MIMO communication to match the executable functions of the secondary measuring instrument 51B.

[0050] The integrated control unit 55 allows the user to set the parameters of STBC and NSTS using a setting screen, for example, as shown in Figure 2.

[0051] Figure 2 shows the case where the primary measuring instrument 51A has a hardware type of 6GRF or BW320M, and the secondary measuring instrument 51B has a hardware type of 5GRF.

[0052] Figure 2(a) shows the settings screen for SISO communication on the primary measuring instrument 51A. In the SISO communication settings, the PPDU type setting and the MCS setting unit 101 are displayed, but the STBC and NSTS parameters for MIMO communication are not displayed.

[0053] Figures 2(b) and (c) show the MIMO communication settings screen, where the STBC setting unit 102 and the NSTS setting unit 103 are displayed. However, due to limitations in the functionality of the secondary measuring instrument 51B, the STBC setting value cannot be changed from "0" and the NSTS setting value from "1", and are therefore grayed out.

[0054] An information icon 102a is displayed to the right of the STBC setting unit 102. For example, if the mouse pointer is hovered over the information icon 102a and the information icon 102a is selected, as shown in Figure 2(b), a message will be displayed prompting the user to check the functions of the secondary unit, stating that "1" cannot be set.

[0055] An information icon 103a is displayed to the right of the NSTS setting unit 103. For example, if the mouse pointer is hovered over the information icon 103a and the information icon 103a is selected, a message will be displayed prompting the user to check the functions of the secondary unit, as shown in Figure 2(c), indicating that "2" cannot be set.

[0056] The integrated control device 55 allows the user to set the PPDU type parameters using a setting screen, for example, as shown in Figure 3.

[0057] Figure 3 shows the case where the primary measuring instrument 51A has a hardware type of 6GRF and the secondary measuring instrument 51B has a hardware type of 5GRF.

[0058] Figure 3(a) shows the settings screen for SISO communication on the primary measuring instrument 51A. When the PPDU setting unit 104 is selected, for example by clicking with the mouse, a list of configurable values ​​is displayed as a drop-down list, and values ​​up to "160 MHz" can be selected.

[0059] In the MIMO communication settings screen, due to limitations in the functionality of the secondary measuring device 51B, only up to "80 MHz" is displayed, as shown in Figure 3(b), and an information icon 104a is displayed to the right of the PPDU setting unit 104.

[0060] For example, when the mouse pointer is hovered over information icon 104a and information icon 104a is selected, as shown in Figure 3(c), "160 MHz" cannot be set and a message prompting the user to check the functions of the secondary unit is displayed.

[0061] The integrated control device 55 allows the user to set the Channel Band parameters using a setting screen, for example, as shown in Figure 4.

[0062] Figure 4 shows the case where the primary measuring instrument 51A has a hardware type of 6GRF or BW320M, and the secondary measuring instrument 51B has a hardware type of 5GRF.

[0063] Figure 4(a) shows the SISO communication settings screen on the primary measuring instrument 51A. When the channel band setting unit 105 is selected, for example by clicking with the mouse, a list of configurable values ​​is displayed as a drop-down list, and "2.4G / 5G Band" and "6G Band" are selectable.

[0064] In the MIMO communication settings screen, due to limitations in the functionality of the secondary measuring device 51B, as shown in Figure 4(b), "2.4G / 5G Band" is selected and cannot be changed, it is grayed out, and an information icon 105a is displayed to the right of the channel band setting section 105.

[0065] For example, if the mouse pointer is hovered over information icon 105a and information icon 105a is selected, as shown in Figure 4(b), the "6G Band" cannot be set and a message prompting the user to check the functions of the secondary device will be displayed.

[0066] The integrated control unit 55 allows the user to set the parameters of the Primary Channel using a settings screen, for example, as shown in Figure 5.

[0067] Figure 5 shows the case where the primary measuring instrument 51A has a hardware type of 6GRF or BW320M, and the secondary measuring instrument 51B has a hardware type of 5GRF.

[0068] Figure 5(a) shows the SISO communication settings screen for the primary measuring instrument 51A. When the primary channel setting unit 106 is selected, for example by clicking with the mouse, a list of configurable values ​​is displayed as a drop-down list, and it is possible to select up to "173 (5865 MHz)" and "177 (5885 MHz)".

[0069] When setting up MIMO communication, due to limitations in the functionality of the secondary measuring device 51B, only "169 (5845 MHz)" is displayed, as shown in Figure 5(b), and an information icon 106a is displayed to the right of the primary channel setting unit 106.

[0070] For example, when the mouse pointer is hovered over information icon 106a and information icon 106a is selected, as shown in Figure 5(c), "173" and "177" cannot be set, and a message prompting the user to check the functions of the secondary machine is displayed.

[0071] Thus, in the above-described embodiment, the integrated control device 55 collects the executable functions of the primary measuring instrument 51A and the secondary measuring instrument 51B, and limits the setting range of the MIMO communication parameters to match the executable functions of the primary measuring instrument 51A and the secondary measuring instrument 51B.

[0072] This limits the range of MIMO communication parameters to match the functional capabilities of the primary measuring instrument 51A and the secondary measuring instrument 51B. Therefore, errors in parameter settings can be minimized.

[0073] Furthermore, the integrated control unit 55 makes it impossible to set parameters for functions that cannot be performed, based on the executable functions of the primary measuring instrument 51A and the secondary measuring instrument 51B, in the parameter setting screen for MIMO communication.

[0074] As a result, in the MIMO communication parameter setting screen, parameters related to functions that cannot be performed are made unset based on the executable functions of the primary measuring device 51A and the secondary measuring device 51B. Therefore, errors in parameter setting can be suppressed.

[0075] Furthermore, the integrated control unit 55 displays a message on the MIMO communication parameter setting screen prompting the user to check the executable functions of the primary measuring instrument 51A or the secondary measuring instrument 51B for parameters that cannot be set due to unexecutable functions.

[0076] As a result, on the MIMO communication parameter setting screen, a message will be displayed prompting the user to check the executable functions of the primary measuring instrument 51A or the secondary measuring instrument 51B for parameters that cannot be set due to an unexecutable function. This makes it clear that the parameter cannot be set due to an unexecutable function, thus reducing the likelihood of setting errors.

[0077] While embodiments of the present invention have been disclosed, it will be apparent to those skilled in the art that modifications can be made without departing from the scope of the invention. All such modifications and equivalents are intended to be included in the following claims. [Explanation of Symbols]

[0078] 1 DUT (device under test) 50 Measuring devices 51A, 51B Measuring equipment 55 Integrated control unit 56 Networks 60A, 60B Control Unit

Claims

1. A measuring device (50) comprising: multiple measuring instruments (51A, 51B) having the same appearance but different functionalities, which measure SISO communication; and an integrated control device (55) that controls the multiple measuring instruments to perform measurements in response to wireless signals transmitted and received by a device under test (1) performing MIMO communication, The integrated control device collects the executable functions of each of the multiple measuring instruments and limits the setting range of MIMO communication parameters based on the executable functions of the multiple measuring instruments.

2. The measuring device according to claim 1, wherein the integrated control device makes it impossible to set parameters for non-executable functions based on the executable functions of a plurality of measuring devices in the parameter setting screen for MIMO communication.

3. The measuring device according to claim 2, wherein the integrated control device displays a message prompting the user to check the executable functions of the measuring device for parameters that cannot be set due to an unexecutable function, on the parameter setting screen for MIMO communication.

4. A parameter limiting method for a measuring device (50) comprising: multiple measuring instruments (51A, 51B) having the same appearance but different executable functions for measuring SISO communication; and an integrated control device (55) that controls the multiple measuring instruments to perform measurements in response to wireless signals transmitted and received by a device under test (1) performing MIMO communication, wherein the device limits the parameters of the measuring device (50), A step of collecting the executable functions of each of the multiple measuring instruments, A parameter limiting method comprising the step of limiting the setting range of MIMO communication parameters based on the executable functions of a plurality of the aforementioned measuring instruments.

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