Communication quality evaluation device, measurement device, received power estimation method, and program

Abstract

To provide a communication quality evaluation device, a measurement device, a received power estimation method, and a program that can evaluate whether or not radio waves transmitted from a base station can cover a desired area with a simple configuration.SOLUTION: A communication quality evaluation device includes: acquisition means for sweeping a second frequency range selected from a first frequency range in which transmission of a reference signal for synchronization with a mobile station transmitted from a base station is defined, with a predetermined resolution, and acquiring measurement results in the second frequency range from a spectrum analyzer capable of measuring a transmission wave from the base station; extraction means for extracting, from the measurement results, a sample from which the reference signal was successfully received; and estimation means for estimating the received power of the reference signal using a value indicated by the sample, the frequency range of the reference signal, and the resolution.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a communication quality evaluation device, a measurement device, a received power estimation method, and a program. [Background technology]

[0002] In mobile communication systems, there is a need to evaluate whether radio waves transmitted by base stations can cover a desired area. Patent Document 1 discloses an example of a radio wave propagation measurement device that can shorten the processing time for searching for SSBs (synchronization signal blocks) by narrowing down the areas for searching for SSBs in NR of a fifth-generation mobile communication system (hereinafter referred to as "5G"). NR is an abbreviation for New Radio. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-158504 Summary of the Invention [Problem to be solved by the invention]

[0004] The radio wave propagation measuring device described in Patent Document 1 includes a radio processing unit that performs operations such as detecting a synchronization signal from a radio signal received from a base station, which has the problem that the device tends to be expensive and large.

[0005] An object of the present disclosure is to provide a communication quality evaluation device, a measurement device, a received power estimation method, and a program that can evaluate, with a simple configuration, whether radio waves transmitted by a base station can cover a desired area. [Means for solving the problem]

[0006] According to a first aspect, there is provided a communication quality evaluation device comprising: acquisition means for sweeping, with a predetermined resolution, a second frequency range selected from a first frequency range defined as a range in which a reference signal for synchronization with a mobile station is transmitted from a base station, and acquiring measurement results for the second frequency range from a spectrum analyzer capable of measuring waves transmitted from the base station; extraction means for extracting, from the measurement results, a sample in which the reference signal was successfully received; and estimation means for estimating the received power of the reference signal using a value indicated by the sample, the frequency range of the reference signal, and the resolution.

[0007] According to a second aspect, there is provided a measurement device comprising: measurement means for sweeping, with a predetermined resolution, a second frequency range selected from a first frequency range in which a reference signal for synchronization with a mobile station transmitted from a base station is to be transmitted, and measuring a transmission wave from the base station; extraction means for extracting, from the measurement results of the transmission wave from the base station, a sample in which the reference signal was successfully received; and estimation means for estimating the received power of the reference signal using a value indicated by the sample, the frequency range of the reference signal, and the resolution.

[0008] According to a third aspect, there is provided a method for estimating the received power of a reference signal, the method comprising: sweeping, with a predetermined resolution, a second frequency range selected from a first frequency range in which a reference signal for synchronization with a mobile station, transmitted from a base station, measuring a transmission wave from the base station; extracting a sample from which the reference signal was successfully received from the measurement result of the transmission wave from the base station; and estimating the received power of the reference signal using a value indicated by the sample, the frequency range of the reference signal, and the resolution.

[0009] According to a fourth aspect, there is provided a program for causing a computer to execute the following processes: a process of sweeping, with a predetermined resolution, a second frequency range selected from a first frequency range in which a reference signal for synchronization with a mobile station transmitted from a base station is to be transmitted, and measuring a transmission wave from the base station; a process of extracting a sample from which the reference signal was received from the measurement result of the transmission wave from the base station; and a process of estimating a received power of the reference signal using a value indicated by the sample, the frequency range of the reference signal, and the resolution. [Effects of the Invention]

[0010] According to the present disclosure, it is possible to provide a communication quality evaluation device, a measurement device, a received power estimation method, and a program that can evaluate, with a simple configuration, whether or not radio waves transmitted by a base station can cover a desired area. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a diagram illustrating a configuration of an embodiment of the present disclosure. [Figure 2] 1 is a flow diagram illustrating the operation of one embodiment of the present disclosure. [Figure 3] FIG. 4 is a diagram showing the waveform of a reference signal. [Figure 4] 10A and 10B are diagrams for explaining a reference signal capturing operation according to the present disclosure. [Figure 5] 10A and 10B are diagrams for explaining a process for estimating the received power of a reference signal according to the present disclosure. [Figure 6] FIG. 1 is a functional block diagram showing a first configuration of the present disclosure. [Figure 7] 4 is a flow chart illustrating the operation of the first configuration of the present disclosure. [Figure 8] FIG. 10 is a diagram showing an example of a measurement result obtained by the first configuration of the present disclosure. [Figure 9] FIG. 10 is a functional block diagram showing a second configuration of the present disclosure. [Figure 10] FIG. 1 is a diagram showing the configuration of a computer installed in a communication quality evaluation device or a spectrum analyzer according to the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0012] First, an overview of one embodiment of the present disclosure will be described with reference to the drawings. Note that the reference numerals in this overview are added to each element for convenience as an example to facilitate understanding, and are not intended to limit the present disclosure to the illustrated form. Furthermore, connecting lines between blocks in the drawings and the like referred to in the following description include both bidirectional and unidirectional lines. Unidirectional arrows are used to schematically indicate the flow of main signals (data) and do not exclude bidirectionality. A program is executed via a computer device, which includes, for example, a processor, a storage device, an input device, a communication interface, and, if necessary, a display device. Furthermore, this computer device is configured to be able to communicate with internal or external devices (including computers) via the communication interface, whether wired or wireless. Furthermore, ports or interfaces are present at the input / output connection points of each block in the drawings, but are not shown.

[0013] In one embodiment, the present disclosure can be realized by a configuration including a communication quality evaluation device 10 equipped with acquisition means 11, extraction means 12, and estimation means 13, as shown in FIG. 1, and a spectrum analyzer (not shown). The spectrum analyzer is capable of measuring the transmission waves from the base station in a second frequency range selected from a first frequency range in which a reference signal for synchronization with a mobile station is transmitted from the base station. The spectrum analyzer sweeps at a predetermined resolution (Resolution Band Width; RBW) to measure the transmission waves from the base station. This function is provided in many spectrum analyzers, especially in compact, portable spectrum analyzers. The acquisition means 11 of the communication quality evaluation device 10 acquires measurement results in the second frequency range from the spectrum analyzer. The extraction means 12 extracts samples from the measurement results in which the reference signal was successfully received. Then, the estimation means 13 estimates the received power of the reference signal using the value indicated by the sample, the frequency range of the reference signal, and the resolution.

[0014] The communication quality evaluation device 10 configured as described above operates as follows. First, the spectrum analyzer sweeps a predetermined frequency range with a predetermined resolution to measure the transmission wave from the base station (step S01 in FIG. 2). This predetermined frequency range can be a second frequency range selected from a first frequency range defined as the range in which a reference signal for synchronization with a mobile station is transmitted from the base station. The first and second frequency ranges may be the same, but it is desirable to set the second frequency range narrower than the first frequency range. This is because it is known that the resolution and the sweep speed are inversely proportional. As an example, the second frequency range can be set to a range that is a predetermined multiple of the resolution. This enables accurate and fast measurements. Note that the measurement operation in this spectrum analyzer may be performed in response to an instruction from the communication quality evaluation device 10. The measurement results obtained by the spectrum analyzer are input to the communication quality evaluation device 10.

[0015] The communication quality evaluation device 10 receives the measurement results and extracts from the measurement results samples from which the reference signal was received (step S02 in FIG. 2).

[0016] Finally, the communication quality evaluation device 10 estimates the received power of the reference signal using the value indicated by the sample, the frequency range of the reference signal, and the resolution (step S03 in FIG. 2).

[0017] Fig. 3 is a diagram showing a schematic waveform of a reference signal transmitted from a base station for synchronization with a mobile station. The symbol d in Fig. 3 indicates the frequency width (bandwidth) d of the reference signal. For example, in the case of local 5G, which is used when a company or local government builds its own dedicated 5G environment, a synchronization signal is transmitted as a reference signal in a certain band (first frequency range) within that frequency range. The frequency width of this synchronization signal is, for example, 30 kHz.

[0018] 4 is a diagram for explaining the reference signal capture operation according to the present disclosure. An appropriate frequency range (second frequency range) is selected from the first frequency range, and that range is swept with a spectrum analyzer having a resolution of a kHz to measure the transmission wave from the base station. Here, it is desirable that the resolution a is sufficiently small compared to the frequency width of the reference signal. If the reference signal from the base station can be captured, a measurement result can be obtained that has a peak at the timing when the reference signal from the base station is captured, as shown in FIG.

[0019] However, the power value measured by the spectrum analyzer (corresponding to the area of ​​the hatched region in Figure 5) is the received power with a resolution of a kHz, so it must be converted into the frequency width of the reference signal. For example, if the frequency width d of the reference signal in Figure 5 is divided by the aforementioned resolution a, the conversion factor d / a is obtained. By multiplying this value by the measured received power c, the received power of the reference signal can be estimated.

[0020] The received power of the reference signal estimated in this way can be used as an index for evaluating whether the radio waves transmitted by the base station can cover the location where the spectrum analyzer is located. As described above, the present disclosure has the advantage that a small, portable spectrum analyzer can be used, eliminating the need for a dedicated measuring device for the reference signal.

[0021] [First embodiment] Next, an embodiment of the present disclosure will be described in detail with reference to drawings in which the present disclosure is applied to an evaluation of whether radio waves transmitted from a local 5G base station can cover a desired area. Fig. 6 is a functional block diagram showing a first configuration of the present disclosure. Fig. 6 shows a configuration in which a communication quality evaluation device 100 and a spectrum analyzer 200 are connected.

[0022] The spectrum analyzer 200 has a function of measuring the transmission wave from the base station while sweeping a specified frequency range at a predetermined resolution (for example, 1 kHz). The frequency range can be specified by specifying a start frequency and a stop frequency, or by specifying a center frequency and a span.

[0023] The communication quality evaluation device 100 comprises an acquisition unit 101 , an extraction unit 102 , and an estimation unit 103 .

[0024] The acquiring unit 101 causes the spectrum analyzer 200 to repeatedly measure the received power in a specified frequency range for a specified period (b seconds) and acquires the measurement results. For example, in the case of local 5G Sub6 (4.7 GHz band), the frequency range available outdoors (first frequency range) is 4.8 GHz to 4.9 GHz. If the resolution of the spectrum analyzer 200 is 1 kHz, the frequency range (second frequency range) for measurement, 4.8 GHz (4800 MHz) to 4.80003 GHz (4800.03 MHzx), selected from the first frequency range, can be selected. In this way, by narrowing the second frequency range compared to the first frequency range, it is possible to increase the speed and accuracy of measurement.

[0025] Extraction unit 102 extracts the sample in the maximum range from the measurement results of the received power for the specified period (b seconds). Note that there may be only one sample in the maximum range, in which case that sample will be the maximum value from the measurement results of the received power for the specified period (b seconds).

[0026] The estimation unit 103 estimates synchronization signal-reference signal received power (SS-RSRP) using the value indicated by the sample, the frequency range of the reference signal, and the resolution. Note that SS stands for secondary synchronization signal, and SS-RSRP stands for synchronization signal reference signal received power.

[0027] The above-mentioned acquisition unit 101, extraction unit 102, and estimation unit 103 can be realized by a computer program that causes a computer to perform the processing of each of these processing units. The communication quality evaluation device 100 equipped with these units can be realized by a computer program that causes a portable PC (Personal Computer), smartphone, or the like to function as the acquisition unit 101, extraction unit 102, and estimation unit 103.

[0028] Next, the operation of the present disclosure will be described in detail with reference to the drawings. FIG. 7 is a flow chart showing the operation of the first configuration of the present disclosure. Referring to FIG. 7, first, the communication quality evaluation device 100 sweeps the second frequency range with a predetermined resolution to measure the transmission wave from the base station (step S001). It is desirable to perform this measurement of the transmission wave for a time b or a predetermined number of times. The longer the time b or the greater the predetermined number of times, the higher the possibility of capturing the transmission wave from the base station. On the other hand, the longer the time b or the greater the predetermined number of times, the longer the time required for step S001. Therefore, it is desirable to set an appropriate time b and predetermined number of times. Furthermore, the upper limit resolution of the spectrum analyzer 200 can be used as this predetermined resolution, and it is desirable to select a spectrum analyzer with appropriate resolution as needed.

[0029] Fig. 8 shows the measurement results obtained by measuring for time b (or a predetermined number of times) using spectrum analyzer 200. For example, at the first, third, and seventh measurements from the left in Fig. 8, the reference signal from the base station was captured and the power value reached its maximum. At the second and fourth to sixth measurements from the left, the reference signal from the base station could not be captured and the power remained low.

[0030] Next, the communication quality evaluation device 100 extracts the sample with the maximum power value from the results of the measurement in step S001 (step S002). The method for extracting the sample with the maximum power value is to simply compare the power values ​​and select the sample with the maximum power value.

[0031] Next, the communication quality evaluation device 100 estimates the SS-RSRP from the sample extracted in step S002 (step S003). Specifically, the power value measured by the spectrum analyzer 200 (corresponding to the area of ​​the hatched region in FIG. 5) is the received power with a resolution of a kHz, and if measured as is, it will be a value lower than the received power of the reference signal. For this reason, it is necessary to convert the above-mentioned power value c into the received power of the reference signal (the area of ​​the c × d rectangle in FIG. 5). Therefore, the communication quality evaluation device 100 estimates the SS-RSRP by multiplying the value obtained by dividing the frequency width d of the SS signal by the above-mentioned resolution a by the received power c.

[0032] Finally, the communication quality evaluation device 100 displays the estimated SS-RSRP on a display device or the like (step S004).

[0033] Instead of displaying the SS-RSRP, the estimated SS-RSRP may be plotted on a map, thereby creating a map showing the coverage area of ​​the base station.

[0034] As described above, according to the present disclosure, SS-RSRP can be measured with high accuracy using spectrum analyzer 200 without using dedicated equipment for measuring SS-RSRP.

[0035] The communication quality evaluation device 100 of the present disclosure can also be used to create a heat map of SS-RSRP for a specific area. For example, the SS-RSRP is estimated at each point in the assumed service area of ​​the base station. The estimated SS-RSRP is plotted on a map of the service area. This procedure allows the creation of a heat map of SS-RSRP for a specific area. The communication quality evaluation device 100 may be mounted on any mobile object, but measurements can also be performed by a measurement engineer carrying the communication quality evaluation device 100 and spectrum analyzer 200. In this case, it is also preferable to provide the communication quality evaluation device 100 with positioning means such as a Global Positioning System (GPS). By providing positioning means in the communication quality evaluation device 100, the communication quality evaluation device 100 can be configured to instruct the measurement engineer on the location to which they should move.

[0036] [Second embodiment] In the first embodiment, an example has been described in which a spectrum analyzer 200 and a communication quality evaluation device 100 are used, but a configuration in which a spectrum analyzer is provided with functions equivalent to those of a communication quality evaluation device may also be used. Fig. 9 is a functional block diagram showing a second configuration of the present disclosure. In the example of Fig. 9, a spectrum analyzer 300 is provided with the above-mentioned measurement unit 301, extraction unit 302, and estimation unit 303. The other configurations and operations are the same as those of the first embodiment, and therefore will not be described again.

[0037] In a more preferred embodiment, the spectrum analyzer 300 has an SS-RSRP estimation mode as an operation mode. When the SS-RSRP estimation mode is selected, the spectrum analyzer 300 starts the operation shown in Fig. 7 and displays the SS-RSRP estimation result.

[0038] According to the present disclosure, it is possible to measure SS-RSRP using spectrum analyzer 300 alone.

[0039] Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments, and further modifications, substitutions, and adjustments can be made without departing from the basic technical concept of the present disclosure. For example, the network configuration, element configuration, and data representation format shown in each drawing are examples to aid in understanding the present disclosure, and are not limited to the configurations shown in these drawings.

[0040] For example, in the above-described embodiments, the scope of application of the present disclosure is not limited to the examples in which a reference signal transmitted from a local 5G base station is measured. For example, within the scope in which the principles of the present disclosure are applicable, the present disclosure can also be applied to measurement of reference signals of other wireless communication networks, such as LTE (Long Term Evolution) and sixth-generation mobile communication systems.

[0041] (About hardware configuration) In each embodiment of the present disclosure, each component of each device represents a functional block. Some or all of the components of each device are realized by an arbitrary combination of an information processing device 900 and a program, for example, as shown in FIG. 10. FIG. 10 is a block diagram showing an example of the hardware configuration of the information processing device 900 that realizes each component of each device. The information processing device 900 includes, as an example, the following configuration. ·CPU(Central Processing Unit)901 ROM (Read Only Memory) 902 ·RAM(Random Access Memory)903 Program 904 loaded into RAM 903 A storage device 905 for storing a program 904 A drive device 907 for reading and writing data from and to the recording medium 906 A communication interface 908 for connecting to a communication network 909 Input / output interface 910 for inputting and outputting data Bus 911 connecting each component

[0042] Each component of each device in each embodiment is realized by the CPU 901 acquiring and executing a program 904 that realizes the function. That is, the CPU 901 in FIG. 10 executes a measurement implementation program and a received power estimation program, and performs an update process for each calculation parameter stored in the RAM 903, the storage device 905, etc. The program 904 that realizes the function of each component of each device is stored in the storage device 905 or the ROM 902 in advance, for example, and is read out by the CPU 901 as needed. The program 904 may be supplied to the CPU 901 via the communication network 909, or may be stored in advance on the recording medium 906, and the drive device 907 may read out the program and supply it to the CPU 901.

[0043] There are various variations in the method of realizing each device. For example, each device may be realized by any combination of a separate information processing device 900 and a program for each component. Furthermore, the multiple components of each device may be realized by any combination of a single information processing device 900 and a program. In other words, the communication quality evaluation device 100 and the spectrum analyzer 300 shown in the first and second embodiments can be realized by a computer program that causes a processor installed in these devices to execute the above-mentioned processes using the hardware.

[0044] In addition, some or all of the components of each device may be realized by other general-purpose or dedicated circuits, processors, etc., or a combination of these. These may be configured by a single chip, or by multiple chips connected via a bus.

[0045] Some or all of the components of each device may be realized by a combination of the above-mentioned circuits and programs.

[0046] When some or all of the components of each device are realized by multiple information processing devices, circuits, etc., the multiple information processing devices, circuits, etc. may be centrally or decentralized. For example, the information processing devices, circuits, etc. may be realized as a client-server system, a cloud computing system, or the like, in a form in which each device is connected via a communication network.

[0047] It should be noted that the above-described embodiments are preferred embodiments of the present disclosure, and the scope of the present disclosure is not limited to only the above-described embodiments. In other words, those skilled in the art can modify or substitute the above-described embodiments to construct various modified forms without departing from the gist of the present disclosure.

[0048] A part or all of the above-described embodiments can be described as, but not limited to, the following supplementary notes.

[0049] [Appendix 1] an acquisition means for sweeping a second frequency range selected from a first frequency range in which a reference signal for synchronization with a mobile station transmitted from a base station is transmitted with a predetermined resolution, and acquiring measurement results in the second frequency range from a spectrum analyzer capable of measuring a transmission wave from the base station; an extracting means for extracting samples from the measurement results in which the reference signal can be received; an estimation means for estimating a received power of the reference signal using the value indicated by the sample, the frequency range of the reference signal, and the resolution; A communication quality evaluation device comprising: [Appendix 2] the acquisition means of the communication quality evaluation device acquires measurement results obtained by repeatedly measuring the second frequency range a plurality of times from the spectrum analyzer, The extracting means may be configured to extract a sample in the maximum range from the results of the multiple measurements. [Appendix 3] The estimation means of the above-described communication quality evaluation device can be configured to estimate the received power of the reference signal by multiplying the value indicated by the sample in the maximum frequency range by the value obtained by dividing the frequency range of the reference signal by the resolution. [Appendix 4] The estimation means of the above-described communication quality evaluation device can be configured to estimate the received power of the reference signal by dividing the frequency range of the reference signal by the resolution, converting the value into a decibel value, and adding the converted value to the value indicated by the sample in the maximum range. [Appendix 5] The above-mentioned communication quality evaluation device A configuration can be adopted in which the received power of the reference signal is estimated at each point within the service area and the estimated values ​​are plotted on a map of the service area, thereby creating a map showing the received power of the reference signal on a map. [Appendix 6] In the above-described communication quality evaluation device, the base station may be a local 5G base station. [Appendix 7] a measuring means for sweeping a second frequency range selected from a first frequency range in which a reference signal for synchronization with a mobile station transmitted from a base station is transmitted with a predetermined resolution and measuring a transmission wave from the base station; an extracting means for extracting samples of the reference signal from the measurement results of the transmitted wave from the base station; an estimation means for estimating a received power of the reference signal using the value indicated by the sample, the frequency range of the reference signal, and the resolution; A measuring device comprising: [Appendix 8] a second frequency range selected from a first frequency range in which a reference signal for synchronization with a mobile station transmitted from a base station is transmitted, is swept with a predetermined resolution, and a transmission wave from the base station is measured; extracting a sample from the measurement result of the transmitted wave from the base station in which the reference signal was received; estimating the received power of the reference signal using the values ​​indicated by the samples, the frequency range of the reference signal, and the resolution; A method for estimating the received power of a reference signal. [Appendix 9] a process of sweeping a second frequency range selected from a first frequency range in which a reference signal for synchronization with a mobile station transmitted from a base station is transmitted with a predetermined resolution, and measuring a transmission wave from the base station; A process of extracting samples from the measurement results of the transmitted waves from the base station, in which the reference signal was received; estimating the received power of the reference signal using the values ​​indicated by the samples, the frequency range of the reference signal, and the resolution; A program that causes a computer to execute the following. The embodiments described in the above Supplementary Notes can be combined with each other after necessary modifications are made. For example, a configuration that combines the contents described in Supplementary Note 2 and the contents described in Supplementary Note 3 is also included in the scope of disclosure of this specification. The embodiments of Supplementary Notes 7 to 9 can be expanded to the embodiments of Supplementary Notes 2 to 6, similarly to Supplementary Note 1.

[0050] The disclosures of the above-cited patent documents are incorporated herein by reference and may be used as the basis or part of this disclosure, as necessary. Within the scope of this disclosure (including the claims), modifications and adjustments of the embodiments and examples are possible based on the basic technical concepts. Furthermore, within the scope of this disclosure, various combinations and selections (including partial deletions) of various disclosed elements (including elements of each claim, elements of each embodiment or example, elements of each drawing, etc.) are possible. In other words, this disclosure naturally includes various modifications and alterations that would be possible by a person skilled in the art in accordance with the entire disclosure and technical concepts, including the claims. In particular, with regard to the numerical ranges set forth herein, any numerical value or subrange within that range should be construed as specifically set forth, even if not otherwise specified. Furthermore, the disclosures of the above-cited documents, when used in part or in whole in combination with the disclosures herein as part of this disclosure, in accordance with the spirit of this disclosure, are also deemed to be included in the disclosures of this application. [Explanation of symbols]

[0051] 10, 100 Communication quality evaluation device 11 Acquisition method 12 Extraction means 13 Estimation means 101 Acquisition Department 102 Extraction part 103 Estimation part 200, 300 Spectrum Analyzer 900 Information Processing Equipment 901 CPU(Central Processing Unit) 902 ROM (Read Only Memory) 903 RAM (Random Access Memory) 904 Program 905 Storage device 906 Recording Media 907 Drive unit 908 Communication Interface 909 Communication Network 910 Input / Output Interface 911 Bus a resolution b Measurement time c Received power d Frequency width (bandwidth) of the reference signal

Claims

1. an acquisition means for sweeping a second frequency range selected from a first frequency range in which a reference signal for synchronization with a mobile station is transmitted from a base station with a predetermined resolution, and acquiring measurement results in the second frequency range from a spectrum analyzer capable of measuring a wave transmitted from the base station; an extracting means for extracting samples from the measurement results in which the reference signal can be received; an estimation means for estimating a received power of the reference signal using the value indicated by the sample, the frequency range of the reference signal, and the resolution; A communication quality evaluation device comprising:

2. the acquiring means acquires from the spectrum analyzer measurement results obtained by repeatedly measuring the second frequency range a plurality of times; 2. A communication quality evaluation device according to claim 1, wherein said extracting means extracts a sample in a maximum range from the results of said multiple measurements.

3. 2. A communication quality evaluation device according to claim 1, wherein said estimation means estimates the received power of said reference signal by multiplying the value indicated by the sample in said maximum frequency range by a value obtained by dividing the frequency range of said reference signal by said resolution.

4. 2. A communication quality evaluation device according to claim 1, wherein said estimation means estimates the received power of said reference signal by dividing the frequency range of said reference signal by said resolution, converting the value into a decibel value, and adding the converted value to the value indicated by the sample in said maximum frequency range.

5. 2. The communication quality evaluation device according to claim 1, wherein the received power of the reference signal is estimated at each point within the service area and the estimated values ​​are plotted on a map of the service area, thereby creating a map showing the received power of the reference signal on the map.

6. The communication quality evaluation device according to claim 1 , wherein the base station is a local 5G base station.

7. a measuring means for sweeping a second frequency range selected from a first frequency range in which a reference signal for synchronization with a mobile station transmitted from a base station is transmitted with a predetermined resolution, and measuring a transmission wave from the base station; an extracting means for extracting samples of the reference signal from the measurement results of the transmitted wave from the base station; an estimation means for estimating a received power of the reference signal using the value indicated by the sample, the frequency range of the reference signal, and the resolution; A measuring device comprising:

8. a second frequency range selected from a first frequency range in which a reference signal for synchronization with a mobile station transmitted from a base station is transmitted, is swept with a predetermined resolution, and a transmission wave from the base station is measured; extracting a sample from the measurement result of the transmitted wave from the base station in which the reference signal was received; estimating the received power of the reference signal using the values ​​indicated by the samples, the frequency range of the reference signal, and the resolution; A method for estimating the received power of a reference signal.

9. a process of sweeping a second frequency range selected from a first frequency range in which a reference signal for synchronization with a mobile station transmitted from a base station is transmitted with a predetermined resolution, and measuring a transmission wave from the base station; A process of extracting samples from the measurement results of the transmitted waves from the base station, in which the reference signal was received; estimating the received power of the reference signal using the values ​​indicated by the samples, the frequency range of the reference signal, and the resolution; A program that causes a computer to execute the following.

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