Measuring device and method for setting measurement target thereof

Abstract

To provide a measuring device that can easily and correctly specify a desired measurement target in measuring IEEE802.11 communication.SOLUTION: When communication in accordance with the IEEE802.11be standard is measured, a plurality of resource unit display sections 120, which are figures that indicate resource units arranged in the frequency bandwidth of a channel, are displayed in a selectable manner, and if the frequency bandwidth of the channel is 320 MHz, when a mouse cursor is placed over the range of a 26-tone display selection section 111, a predetermined number of resource unit display sections 120 based on the position of the mouse cursor are enlarged and displayed as an enlarged selection section 137, and a resource unit to be measured is selected by the resource unit display sections 120 displayed in the enlarged selection section 137.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a measurement device, and more particularly to a measurement device that measures radio signals transmitted and received by a communication device that operates in accordance with a wireless LAN (Local Area Network) communication standard. [Background technology]

[0002] With the advancement of information and communication technology, various wireless communication technologies have been developed. Among these, well-known communication standards related to wireless LAN technology include IEEE (Institute of Electrical and Electronics Engineers) 802.11ac and IEEE 802.11ax.

[0003] IEEE802.11ax uses Orthogonal Frequency Division Multiple Access (OFDMA) to allow more users to use the same frequency bandwidth.

[0004] In IEEE802.11ax OFDMA, the frequency band of a channel is divided into sub-channels, and each sub-channel is assigned to a user, allowing the frequency band of the channel to be used by multiple users.

[0005] Patent document 1 describes a measurement device that measures communications conforming to the IEEE802.11ax standard, which displays multiple figures indicating subchannels within the channel bandwidth on a display unit and allows the user to select the subchannel to be measured. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2021-022868 Summary of the Invention [Problem to be solved by the invention]

[0007] In recent years, IEEE802.11be, an Extremely High Throughput (EHT) wireless LAN standard, has been proposed as the next version of IEEE802.11ax.

[0008] IEEE802.11be's OFDMA (Orthogonal Frequency Division Multiple Access) makes it possible to divide the frequency band of a channel with a specified frequency bandwidth used for communication into multiple resource units (RUs) and assign multiple resource units to a single terminal.

[0009] However, when multiple resource units are selected, the resource units that can be selected are defined by the standard, and cannot be selected freely.

[0010] When measuring such IEEE802.11be communications, it is necessary to measure a specific resource unit. However, in the case of communications using multiple resource units, it is necessary to select a resource unit that is selectable in accordance with the standard. This can easily lead to user errors, and configuration can be time-consuming and tedious, reducing usability.

[0011] Furthermore, IEEE802.11be also specifies a frequency bandwidth of 320 MHz, but when attempting to display a graphic showing a resource unit on one screen as in Patent Document 1, some parts of the graphic become small, making it difficult to select the resource unit to measure, which can lead to user errors and makes setting up time-consuming and laborious, resulting in issues that reduce usability.

[0012] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a measurement device that can easily and correctly specify a desired measurement target when measuring IEEE802.11 communications. [Means for solving the problem]

[0013] The measurement device of the present invention is a measurement device (1) that measures the transmission and reception characteristics of a communication device (100) by measuring radio signals transmitted and received by the communication device, and includes a display unit (15) that displays images, and a control unit (16) that, when measuring communications in accordance with the IEEE802.11 standard, causes the display unit to selectably display a plurality of resource unit display sections (120), which are graphics indicating resource units arranged in the frequency bandwidth of a channel, and, when the frequency bandwidth of the channel is equal to or greater than a predetermined value, causes the display unit to enlarge a predetermined number of the resource unit display sections based on the position of the mouse cursor when the mouse cursor is placed over a range of a pre-set display selection section (111) and display them as enlarged selection sections (137), and causes the control unit (16) to select a resource unit to be measured using the resource unit display sections displayed in the enlarged selection section.

[0014] With this configuration, when the frequency bandwidth of the channel is equal to or greater than a predetermined value, if the mouse cursor is placed over a predetermined range of the display selection section, a predetermined number of resource unit display sections based on the position of the mouse cursor are enlarged and displayed as an enlarged selection section. This allows the resource unit display sections to be made large enough to be easily distinguished, making it possible to easily and correctly specify the desired measurement target.

[0015] In addition, in the measuring device of the present invention, the control unit makes the display of the resource unit display unit of the display selection unit corresponding to the resource unit display unit displayed in the enlarged selection unit different from the other resource unit display units.

[0016] With this configuration, when the mouse cursor is placed over a predetermined range of the display selection section and an enlarged selection section is displayed, the display of the resource unit display section of the display selection section corresponding to the resource unit display section displayed in the enlarged selection section is displayed differently from the other resource unit display sections. This makes it easy to identify where in the channel frequency band the resource unit display section displayed in the enlarged selection section is located, and makes it easy to specify the desired measurement target without error.

[0017] Furthermore, a measurement target setting method of the present invention is a measurement target setting method for a measurement device (1) that has a display unit (15) for displaying images and that measures wireless signals transmitted and received by a communication device (100) to measure the transmission and reception characteristics of the communication device, and includes the steps of: when measuring communications in accordance with the IEEE802.11 standard, displaying a plurality of selectable resource unit display sections (120) on the display unit; when the frequency bandwidth of the channel is equal to or greater than a predetermined value, enlarging a predetermined number of the resource unit display sections based on the position of the mouse cursor when the mouse cursor is placed over a range of a preset display selection section (111) and displaying them as an enlarged selection section (137); and selecting a resource unit to be measured using the resource unit display sections displayed in the enlarged selection section.

[0018] With this configuration, when the frequency bandwidth of the channel is equal to or greater than a predetermined value, if the mouse cursor is placed over a predetermined range of the display selection section, a predetermined number of resource unit display sections based on the position of the mouse cursor are enlarged and displayed as an enlarged selection section. This allows the resource unit display sections to be made large enough to be easily distinguished, making it possible to easily and correctly specify the desired measurement target. [Effects of the Invention]

[0019] The present invention can provide a measurement device that can easily and correctly specify a desired measurement target when measuring IEEE802.11 communications. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is a block diagram of a measurement device according to one embodiment of the present invention. [Figure 2] FIG. 2 is a diagram showing an example of a wireless communication setting image of a measurement device according to one embodiment of the present invention. [Figure 3] FIG. 3 is a diagram showing RU combinations based on MRU types and MRU indices when the channel frequency bandwidth is 20 MHz in IEEE 802.11be. [Figure 4] FIG. 4 is a diagram showing an example of a resource unit configuration image when the frequency bandwidth of the channel of the measurement device according to one embodiment of the present invention is 20 MHz. [Figure 5] FIG. 5 is a diagram showing an example of a resource unit configuration image when the frequency bandwidth of the channel of the measurement device according to one embodiment of the present invention is 40 MHz. [Figure 6] FIG. 6 is a diagram showing an example of a resource unit configuration image when the frequency bandwidth of the channel of the measurement device according to one embodiment of the present invention is 80 MHz. [Figure 7] FIG. 7 is a diagram showing an example of a resource unit configuration image when the frequency bandwidth of the channel of the measurement device according to one embodiment of the present invention is 160 MHz. [Figure 8] FIG. 8 is a diagram showing an example of a resource unit configuration image when the frequency bandwidth of the channel of the measurement device according to one embodiment of the present invention is 320 MHz. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, a measuring device according to an embodiment of the present invention will be described in detail with reference to the drawings. 1, a measurement device 1 according to one embodiment of the present invention communicates wirelessly with a communication device 100 and performs various measurements on wireless signals transmitted and received by the communication device 100. In this embodiment, the measurement device 1 operates as a wireless LAN access point (AP) and the communication device 100 operates as a wireless LAN station (STA), but this is not limiting, and the measurement device 1 may operate as a STA and the communication device 100 may operate as an AP. The measurement device 1 communicates with the communication device 100 in accordance with a communication standard conforming to IEEE802.11.

[0022] The measurement device 1 includes a transmitting unit 10 , a receiving unit 11 , a signal generating unit 12 , a signal analyzing unit 13 , an operating unit 14 , a display unit 15 , and a control unit 16 .

[0023] The transmitter 10 amplifies and frequency-converts the signal generated by the signal generator 12 and transmits it to the communication device 100 .

[0024] The receiver 11 amplifies and frequency-converts the radio signal received from the communication device 100 and outputs the signal to the signal analyzer 13 .

[0025] The signal generating unit 12 generates a signal including a control packet and a data packet for communicating with the communication device 100 and transmits the signal to the communication device 100 via the transmitting unit 10 .

[0026] The signal analysis unit 13 analyzes the radio signal received from the communication device 100 via the receiving unit 11, and performs measurement processing of the transmission and reception characteristics of the communication device 100. The transmission and reception characteristics include a packet error rate, EVM (Error Vector Magnitude), and transmission power.

[0027] The operation unit 14 is composed of input devices such as a keyboard, a mouse, and a touch panel, and outputs information input by operation to the control unit 16.

[0028] The display unit 15 is composed of an image display device such as a liquid crystal display, and displays images for inputting information necessary for measurement, images showing measurement results, and the like.

[0029] The control unit 16 is configured by a computer unit that includes a CPU (Central Processing Unit), not shown, a RAM (Random Access Memory), a ROM (Read Only Memory), a hard disk drive, and an input / output port.

[0030] The ROM and hard disk drive of this computer unit store various control constants, various maps, and the like, as well as a program for causing the computer unit to function as control unit 16. That is, the CPU executes the program stored in the ROM and hard disk drive, causing the computer unit to function as control unit 16. The hard disk drive may be a flash memory such as a CF (Compact Flash) card.

[0031] The signal generating unit 12, signal analyzing unit 13, operating unit 14, and display unit 15 are connected to the input / output ports of the control unit 16, and the control unit 16 and each unit can send and receive signals.

[0032] The measurement device 1 of this embodiment is capable of measuring communications in accordance with the IEEE802.11be standard.

[0033] In IEEE802.11be, a channel with a specified frequency bandwidth used for communication is divided into resource units consisting of a specified number of subcarriers, and communication is carried out by assigning a terminal to each resource unit or by assigning multiple resource units to one terminal.

[0034] The minimum number of subcarriers that make up a resource unit is 26 (26-tone RU), but other options include 52 (52-tone RU), 106 (106-tone RU), 242 (242-tone RU), 484 (484-tone RU), and 996 (996-tone RU). Channel frequency bandwidths include 20 MHz, 40 MHz, 80 MHz, 160 MHz, and 320 MHz.

[0035] The control unit 16 causes the display unit 15 to display an image (wireless setting image) such as that shown in FIG. 2, and causes the user to set up wireless communication.

[0036] In Fig. 2, a PPDU format selection unit 101 selects a PPDU (Physical Layer Convergence Protocol (PLCP) Protocol Data Unit) format. A PPDU type selection unit 102 selects a channel frequency bandwidth. The channel frequency bandwidth can be selected from, for example, 20 MHz, 40 MHz, 80 MHz, 160 MHz, and 320 MHz.

[0037] When "EHT TB" is selected in the PPDU format selection section 101, the control section 16 displays the RU type setting section 103, the RU index setting section 104, and the RU allocation selection icon 105.

[0038] RU type setting section 103 sets the type of RU specified by the standard. For example, the RU types are 26, 52, 106, 242, 484, 996, 2x996, 4x996, etc., and when only one RU is allocated, it is called Single RU (SRU).

[0039] When multiple RUs are assigned, such as 52+26, 106+26, 484+242, and 996+484, the type of RU is referred to as Multiple RU (MRU).

[0040] The RU index setting unit 104 sets the RU index defined by the standard for single RU or multiple RU.

[0041] In the case of MRU, for example, IEEE802.11be specifies the combination of RUs to be used based on the MRU type and MRU index, as shown in Figure 3. Note that Figure 3 shows the combination of RUs when the channel frequency bandwidth is 20 MHz.

[0042] In this way, a resource unit can be selected based on the MRU type and MRU index defined in the standard, making it easy to select an MRU resource unit.

[0043] Note that the control unit 16 allows the RU type setting unit 103 and the RU index setting unit 104 to set only the RU types and RU indexes assigned by the standard.

[0044] For example, RU type setting section 103 displays RU types defined by the standard in a drop-down list for selection. Only the index of an RU that can be selected for the RU type selected in RU type setting section 103 can be set in RU index setting section 104, and if an index of an RU that cannot be selected is set, the setting is canceled and the original value is restored.

[0045] In addition, when the type of RU is set in the RU type setting unit 103, if the value set in the RU index setting unit 104 becomes an unselectable value, the control unit 16 sets the smallest value among the selectable RU indexes in the RU index setting unit 104.

[0046] When the RU allocation selection icon 105 is selected, for example, by clicking it with the mouse on the operation unit 14, the control unit 16 displays on the display unit 15 an image of the RU configuration (RU configuration image) corresponding to the frequency bandwidth selected by the PPDU type selection unit 102, and assigns the RU to be measured.

[0047] When the frequency bandwidth selected by the PPDU type selection unit 102 is 20 MHz and the RU type selected by the RU type setting unit 103 is MRU, the control unit 16 causes the display unit 15 to display an image such as that shown in Fig. 4, and assigns the RU to be measured. The horizontal direction in Fig. 4 represents the frequency band, with the frequency increasing to the right.

[0048] In Figure 4, the 26-tone display selection unit 111, which is a row-direction group, displays and allows selection of 26-tone RU resource units. The 52-tone display selection unit 112 displays and allows selection of 52-tone RU resource units. The 106-tone display selection unit 113 displays and allows selection of 106-tone RU resource units. The 242-tone display selection unit 114 displays and allows selection of 242-tone RU resource units.

[0049] Each display selection section displays the same number of resource unit display sections 120 as the number of resource units, each representing a respective resource unit. The resource unit display sections 120, for example, represent the frequency bandwidth of each resource unit and its position on the frequency bandwidth of the channel using a substantially trapezoidal figure.

[0050] By doing this, it is possible to easily check the location of the resource unit being selected or the resource unit to be selected, and it is possible to easily and correctly specify the desired measurement target.

[0051] The control unit 16 changes the display of the resource unit display unit 120 between unselected, selected (= selected), and unselectable. Unselectable indicates a resource unit that cannot be used with the selected PPDU type. Unselected indicates a resource unit that can be used with the selected PPDU type but has not been selected.

[0052] For example, the control unit 16 causes the display of the selected resource unit display section 120 to look like resource unit display section 120a. For example, the control unit 16 causes the display of the non-selectable resource unit display section 120 to look like resource unit display section 120b. The resource unit display section 120a and the resource unit display section 120b have different display modes that allow them to be distinguished from each other.

[0053] In this way, the display of the resource unit display section 120 changes between unselected, selected, and unselectable, so that it is easy to check which resource units cannot be selected, and it is possible to easily and correctly specify the desired measurement target.

[0054] For example, based on the RU type and RU index set by the RU type setting unit 103 and the RU index setting unit 104 in Figure 2, the control unit 16 sets the display in the resource unit display unit 120 of the resource unit determined from the set RU type and RU index to selected, sets the display in the resource unit display unit 120 of the non-selectable resource unit determined from the set RU type and RU index to unselectable, and sets the display in the resource unit display unit 120 of the selectable resource unit determined from other set RU types to unselected.

[0055] In this way, it is possible to easily check the position of the selected resource unit, and to easily and correctly specify the desired measurement target.

[0056] The RU type setting unit 131 displays the RU type set by the RU type setting unit 103 in FIG. 2 as the initial value, and the RU type can be set by user operation.

[0057] The RU index setting unit 132 displays the RU index set by the RU index setting unit 104 in FIG. 2 as the initial value, and the RU index can be set by user operation.

[0058] In this way, a resource unit can be selected based on the RU type and RU index defined in the standard, making it easy to select an MRU resource unit.

[0059] The control unit 16 switches the display of the resource unit display unit 120 in accordance with the settings of the RU type setting unit 131 and the RU index setting unit 132, for example.

[0060] The control unit 16 sets the display in the resource unit display unit 120 of the RU determined from the RU type and RU index set by the RU type setting unit 131 and the RU index setting unit 132 as selected, sets the display in the resource unit display unit 120 of the RU that cannot be selected from the set RU type and RU index as unselectable, and sets the display in the resource unit display unit 120 of the selectable RU determined from the other set RU types as unselected.

[0061] In this way, a resource unit can be selected based on the RU type and RU index defined in the standard, and the location of the selected resource unit can be easily confirmed.

[0062] In addition, when the resource unit display section 120, which is displayed as unselected, is selected, for example, by clicking using the mouse of the operation section 14, the control section 16 switches the resource unit display section 120 of the RU corresponding to the selected RU to display as selected, and switches the display of the RU type setting section 131 and the RU index setting section 132 to match the selected RU.

[0063] For example, if there are multiple combinations in the selected RU, the control unit 16 adopts the combination with the smallest MRU index value and switches the display.

[0064] In this way, it is possible to select a resource unit to be measured from the configuration image of the resource unit, and it is possible to easily and correctly specify the desired measurement target.

[0065] Furthermore, since the resource unit paired with the selected resource unit is automatically selected, the desired measurement target can be easily and correctly specified.

[0066] In addition, the MRU type and index of the selected resource unit can be confirmed from the resource unit configuration image, making it possible to easily and correctly specify the desired measurement target.

[0067] Furthermore, when any of the resource unit display sections 120 of an unselected RU is selected by, for example, clicking using the mouse of the operation section 14, the control section 16 displays a candidate other than unselected, selected, or unselectable in the resource unit display section 120 of the candidate RU paired with the selected RU. Note that if the combination of RUs is uniquely determined by the first selected RU, the resource unit display section 120 of the corresponding second RU will also display selected.

[0068] In this way, the display of the candidate resource units that are paired with the selected resource unit changes, so that the desired measurement target can be easily and correctly specified.

[0069] Furthermore, if a resource unit that pairs with a selected resource unit is uniquely determined, that resource unit is automatically selected, so that the desired measurement target can be easily and correctly specified.

[0070] The control unit 16 may switch the display of the resource unit display unit 120 in accordance with the settings of the RU type setting unit 131 and the RU index setting unit 132.

[0071] By doing so, it is possible to easily check the location of the resource unit selected by the settings of the RU type setting unit 131 and the RU index setting unit 132.

[0072] Alternatively, the setting may be performed by the RU type setting unit 103, the RU index setting unit 104, the RU type setting unit 131, and the RU index setting unit 132, and the resource unit display unit 120 may simply check the display.

[0073] In Fig. 4, Confirm button 133 is used to confirm the setting of the selected resource unit. When Confirm button 133 is selected by operating operation unit 14, control unit 16 sets the resource unit corresponding to selected resource unit display section 120a as the resource unit to be measured, and returns the display on display unit 15 to the display in Fig. 2 (the display in Fig. 4 disappears). At this time, control unit 16 causes RU type setting unit 103 to display the type of the selected resource unit, and RU index setting unit 104 to display the index.

[0074] In Fig. 4, the cancel button 134 is used to cancel the changed setting of the selected resource unit. When the cancel button 134 is selected by operating the operation unit 14, the control unit 16 sets the resource unit that was selected before the image of Fig. 4 was displayed as the resource unit to be measured, and returns the display on the display unit 15 to the display in Fig. 2. At this time, the control unit 16 causes the RU type setting unit 103 to display the type of the resource unit that was selected before the image of Fig. 4 was displayed, and causes the RU index setting unit 104 to display the index.

[0075] The MRU switching button 135 switches the RU type to MRU. The SRU switching button 136 switches the RU type to SRU. When the MRU switching button 135 is selected by clicking it with the mouse of the operation unit 14, the control unit 16 switches the RU type to MRU. When the SRU switching button 136 is selected by clicking it with the mouse of the operation unit 14, the control unit 16 switches the RU type to SRU.

[0076] When the RU type is MRU, the control unit 16 displays the MRU switching button 135 larger than the SRU switching button 136, as shown in Fig. 4. When the RU type is SRU, the control unit 16 displays the SRU switching button 136 larger than the MRU switching button 135, opposite to what is shown in Fig. 4.

[0077] In this way, it is possible to easily know whether the currently selected RU type is SRU or MRU, and to easily and correctly specify the desired measurement target.

[0078] When the frequency bandwidth selected by the PPDU type selection unit 102 is 40 MHz, the control unit 16 causes the display unit 15 to display an image as shown in FIG. 5, and causes the display unit 15 to allocate RUs to be measured.

[0079] 5, when the frequency bandwidth is 20 MHz, the 484-tone display selection section 115 is displayed. The 484-tone display selection section 115 displays and allows selection of 484-tone RU resource units.

[0080] When the frequency bandwidth selected by the PPDU type selection unit 102 is 80 MHz, the control unit 16 causes the display unit 15 to display an image as shown in FIG. 6, and causes the display unit 15 to allocate RUs to be measured.

[0081] 6, when the frequency bandwidth is 40 MHz, the 996-tone display selection section 116 is displayed. The 996-tone display selection section 116 displays and allows selection of 996-tone RU resource units.

[0082] When the frequency bandwidth selected by the PPDU type selection unit 102 is 160 MHz, the control unit 16 causes the display unit 15 to display an image as shown in FIG. 7, and causes the display unit 15 to allocate RUs to be measured.

[0083] 7, when the frequency bandwidth is 80 MHz, a 2×996-tone display selection section 117 is displayed. The 2×996-tone display selection section 117 displays and allows selection of 2×996-tone RU resource units.

[0084] When the frequency bandwidth selected by the PPDU type selection unit 102 is 320 MHz, the control unit 16 causes the display unit 15 to display an image as shown in Fig. 8, and assigns the RU to be measured. Note that Fig. 8 shows the case where the RU type is SRU.

[0085] 8, when the frequency bandwidth is 160 MHz, a 4x996-tone display selection section 118 is displayed. The 4x996-tone display selection section 118 displays and allows selection of 4x996-tone RU resource units.

[0086] If the frequency bandwidth of a channel is 320 MHz, displaying the entire 320 MHz on one screen will result in a small graphic in the 26-tone display selection unit 111, making it difficult to select an RU or check the selected RU.

[0087] Therefore, in this embodiment, when the mouse cursor is placed within the range of the 26-tone display selection unit 111, the control unit 16 enlarges and displays a predetermined number of resource unit display units 120 based on the position of the mouse cursor, and allows the user to select the RU to be measured using the enlarged resource unit display units 120.

[0088] 8, when the mouse cursor is placed within the range of the 26-tone display selection unit 111, the control unit 16 enlarges five resource unit display units 120, including the one closest to the mouse cursor position and two on each side of that unit, and displays them as enlarged selection unit 137. The control unit 16 causes the user to select an RU to be measured using the resource unit display units 120 displayed in the enlarged selection unit 137.

[0089] By doing so, the size of the resource unit display section 120 can be made easy to distinguish, and the desired measurement target can be specified easily and without error.

[0090] The control unit 16 may cause the display of the resource unit display unit 120 of the 26-tone display selection unit 111 corresponding to the resource unit display unit 120 displayed in the enlargement selection unit 137 to be different from that of the other resource unit display units 120.

[0091] By doing this, it is possible to easily identify where in the channel frequency band the resource unit display section 120 displayed in the enlarged selection section 137 is located, and the desired measurement target can be easily and correctly specified.

[0092] The control unit 16 causes the display of the selected resource unit display section 120 to look like resource unit display section 120a.

[0093] Furthermore, if the RU type is an MRU, the control unit 16 performs the same control as in the case of the MRU described above.

[0094] Furthermore, when the mouse cursor is placed over the 26-tone display selection section 111, the enlarged display is displayed in the enlargement selection section 137, but the same may be done for other preset display selection sections.

[0095] The control unit 16 uses the resource units set in this way to communicate with the communication device 100 and causes it to perform various measurements. For example, an operator selects and confirms the resource units that the operator wants the communication device 100 to transmit, using the RU configuration image in FIG. 4 . The transmitter 10 notifies the communication device 100 of the measurement conditions, including the selected resource units, and the communication device 100 transmits a predetermined signal back to the measurement device 1 using the specified resource units. The measurement device 1 receives the signal transmitted back by the receiver 11, and measures the transmission characteristics, etc., by the signal analyzer 13.

[0096] In this embodiment, an example of a measuring device in which the operation unit 14 and the display unit 15 are integrated is shown, but it is also possible to configure the device so that the signal generation unit 12 and the signal analysis unit 13 are controlled from a program on a personal computer connected via a network, for example.

[0097] Furthermore, in this embodiment, IEEE802.11be is taken as an example, but the present invention can be applied to other communication standards that require the selection of selectable resource units according to the standard.

[0098] While an embodiment of the present invention has been disclosed, it will be apparent to one skilled in the art that modifications may be made thereto without departing from the scope of the present invention, and it is intended that all such modifications and equivalents be included in the following claims. [Explanation of symbols]

[0099] 1. Measuring equipment 14 Control section 15 Display section 16 Control Unit 100 Communication equipment 102 PPDU type selection section 103, 131 RU type setting section 104, 132 RU index setting section 105 RU allocation selection icon 111 26-tone display selection unit (display selection unit) 120, 120a, 120b Resource unit display section 137 Enlargement selection section

Claims

1. A measurement device (1) that measures the transmission and reception characteristics of a communication device (100) by measuring a radio signal transmitted and received by the communication device, A display unit (15) for displaying an image; When measuring communications in accordance with the IEEE 802.11 standard, a plurality of resource unit display sections (120) each of which is a graphic indicating a resource unit allocated to a frequency bandwidth of a channel are selectively displayed on the display section; and a control unit (16) that, when the frequency bandwidth of the channel is equal to or greater than a predetermined value, enlarges a predetermined number of the resource unit display sections based on the position of the mouse cursor and displays them as an enlarged selection section (137) when the mouse cursor is placed over a range of a pre-set display selection section (111), and selects a resource unit to be measured using the resource unit display sections displayed in the enlarged selection section.

2. The measurement device according to claim 1 , wherein the control unit causes the display of the resource unit display section of the display selection unit corresponding to the resource unit display section being displayed in the enlarged selection unit to be different from the display of the other resource unit display sections.

3. A measurement target setting method for a measurement device (1) that has a display unit (15) that displays an image and measures a wireless signal transmitted and received by a communication device (100) to measure the transmission and reception characteristics of the communication device, comprising: When measuring communications in accordance with the IEEE 802.11 standard, a step of selectively displaying a plurality of resource unit display sections (120) on the display section, the resource unit display sections (120) being graphics indicating resource units allocated in the frequency bandwidth of the channel; When the frequency bandwidth of the channel is equal to or greater than a predetermined value, when a mouse cursor is placed over a range of a preset display selection section (111), a step of enlarging a predetermined number of the resource unit display sections based on the position of the mouse cursor and displaying them as an enlarged selection section (137); a step of selecting a resource unit to be measured using the resource unit display portion displayed in the enlarged selection portion; A measurement target setting method comprising:

Images