Station placement design device and program

Abstract

A station installation design device according to the present disclosure carries out radio wave propagation estimation for evaluation positions at which radio waves of a first communication system and / or a second communication system can be received from base stations in various combinations of the first communication system in a case in which, according to the radio wave propagation estimation, a station is installed at a first installation position candidate in a first installation direction and the second communication system in a case in which, according to the radio wave propagation estimation, a station is installed at a second installation position candidate in a second installation direction, and thereby the station installation design device calculates the estimated reception power at each evaluation position in the combinations, uses the estimated reception power to calculate a quality evaluation index indicating the ratio of the number of prescribed evaluation positions where a target reception power has been achieved to the number of all evaluation positions in each combination, calculates a cost evaluation index for each combination on the basis of cost information for each base station, calculates a comprehensive evaluation index for each combination on the basis of the quality evaluation index, a quality leveling index that constitutes a dispersion of this quality evaluation index, and the cost evaluation index, and selects, from among the various combinations, one combination or the like for which the maximum comprehensive evaluation index has been calculated.

Description

[Technical Field]

[0001] The present disclosure relates to a technology for estimating the location where a wireless communication base station is installed. [Background technology]

[0002] Generally, when installing a base station for wireless communication such as 5G (5th Generation) or Wi-Fi, it is necessary to consider the installation location and installation direction, taking into account radio wave obstructions such as structures (Non-Patent Document 1). [Prior art documents] [Non-patent literature]

[0003] [Non-Patent Document 1] NTT DoCoMo Technical Journal vol.2 no.4 <https: / / www.nttdocomo.co.jp / binary / pdf / corporate / technology / rd / technical_journal / bn / vol2_4 / vol2_4_035jp.pdf> Summary of the Invention [Problem to be solved by the invention]

[0004] However, depending on the evaluation location of radio wave quality within the target area for station placement design, there may be cases where, for example, a device that can only receive radio waves of the 5G communication method is installed, a device that can only receive radio waves of the Wi-Fi communication method is installed, or a device that can receive radio waves of both communication methods is installed. Therefore, there is a problem that appropriate station placement design cannot be performed by estimating the installation location etc. based on one type of communication method.

[0005] The present invention has been made in view of the above points, and an object of the present invention is to perform appropriate station placement design for wireless communication base stations. [Means for solving the problem]

[0006] In order to solve the above problem, the invention of claim 1 is a station location design device that designs installation of wireless communication base stations within a station location design target area, the device comprising: a radio wave propagation estimation unit that calculates estimated received power at each evaluation position for each combination by performing radio wave propagation estimation for each evaluation position at which radio waves of at least one of a first communication method when installed in a first installation direction at a first installation position candidate and a second communication method when installed in a second installation direction at a second installation position candidate, the radio wave propagation estimation unit calculating estimated received power at each evaluation position for each of the combinations by using the estimated received power; and a radio wave propagation estimation unit that calculates estimated received power at each evaluation position for each of the combinations by using the estimated received power, the radio wave propagation estimation unit calculating estimated received power at each evaluation position for each of the combinations ... a quality evaluation index calculation unit that calculates a quality evaluation index indicating a ratio of the number of predetermined evaluation positions formed based on the quality evaluation index; a quality leveling index calculation unit that calculates a quality leveling index for each of the combinations based on the quality evaluation index; a cost evaluation index calculation unit that calculates a cost evaluation index for each of the combinations based on cost information of each base station; an overall evaluation index calculation unit that calculates an overall evaluation index for each of the combinations based on the quality evaluation index, the quality leveling index, and the cost evaluation index; and a selection unit that selects, from the combinations, a single combination for which a maximum overall evaluation index is calculated, or a plurality of combinations for which a predetermined number of highest valued standard overall evaluation indexes are calculated. [Effects of the Invention]

[0007] As described above, the present invention provides an effect of enabling appropriate station placement design of wireless communication base stations. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a diagram illustrating the overall configuration of a communication system according to an embodiment of the present invention. [Figure 2] FIG. 2 is an electrical hardware configuration diagram of the station placement design apparatus according to the present embodiment. [Figure 3] FIG. 2 is a diagram illustrating an electrical hardware configuration of a communication terminal according to the present embodiment. [Figure 4]FIG. 2 is a functional configuration diagram of a station placement design apparatus according to the present embodiment. [Figure 5] FIG. 1 is a conceptual diagram of a target area for station placement design. [Figure 6] 10 is a flowchart showing a station placement design method executed by the station placement design device according to the present embodiment. [Figure 7] 1 is a flowchart showing a station placement design method executed by a station placement design device according to the present embodiment. [Figure 8] This figure shows the indexes calculated for each combination of potential installation locations and installation directions for 5G base stations and potential installation locations and installation directions for Wi-Fi base stations. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0010] [System configuration of the embodiment] First, the overall configuration of the communication system of this embodiment will be described with reference to Fig. 1. Fig. 1 is a diagram showing the overall configuration of the communication system according to this embodiment.

[0011] 1, a communication system 10 of this embodiment is constructed by a station placement design device 30 and a communication terminal 50. The communication terminal 50 is managed and used by a user. The user refers to the output result of the station placement design device 30 and determines what to do next.

[0012] Furthermore, the station placement design device 30 and the communication terminal 50 can communicate with each other via a communication network 100 such as the Internet. The communication network 100 may be connected wirelessly or by wire.

[0013] The station location design device 30 is composed of one or more computers. When the station location design device 30 is composed of multiple computers, it may be referred to as a "station location design device" or a "station location design system." The station location design device 30 is a device that designs the installation of wireless communication base stations, and when both a first base station for wireless communication using a first communication method such as 5G and a second base station for wireless communication using a second communication method such as Wi-Fi are to be installed within a station location design target area, the station location design device 30 performs more appropriate station location design by taking into account the installation positions and installation directions of both.

[0014] The communication terminal 50 is a computer, and a notebook computer is shown as an example in Fig. 1. In Fig. 1, a user operates the communication terminal 50. Note that the station placement design device 30 may perform processing independently without using the communication terminal 50.

[0015] [Hardware configuration] <Hardware configuration of the station placement design device> Next, the electrical hardware configuration of the station placement design device 30 will be described with reference to Fig. 2. Fig. 2 is a diagram showing the electrical hardware configuration of the station placement design device.

[0016] As shown in FIG. 2 , the station placement design device 30 is a computer that includes a CPU (Central Processing Unit) 301 as a processor, a ROM (Read Only Memory) 302, a RAM (Random Access Memory) 303, an SSD (Solid State Drive) 304, an external device connection I / F (Interface) 305, a network I / F 306, a media I / F 309, and a bus line 310.

[0017] Of these, the CPU 301 controls the overall operation of the station placement design device 30. The ROM 302 stores programs such as an IPL (Initial Program Loader) used to drive the CPU 301. The RAM 303 is used as a work area for the CPU 301.

[0018] The SSD 304 reads or writes various data under the control of the CPU 301. Note that instead of the SSD 304, a hard disk drive (HDD) may be used.

[0019] The external device connection I / F 305 is an interface for connecting various external devices, such as a display, a speaker, a keyboard, a mouse, a USB (Universal Serial Bus) memory, and a printer.

[0020] The network I / F 306 is an interface for performing data communication via the communication network 100 .

[0021] The media I / F 309 controls reading and writing (storing) of data from and to a recording medium 309m such as a flash memory, etc. The recording medium 309m includes a DVD (Digital Versatile Disc) and a Blu-ray Disc (registered trademark).

[0022] The bus line 310 is an address bus, a data bus, etc. for electrically connecting the components such as the CPU 301 shown in FIG.

[0023] <Hardware configuration of communication terminal> Next, the electrical hardware configuration of the communication terminal 50 will be described with reference to Fig. 3. Fig. 3 is a diagram showing the electrical hardware configuration of the communication terminal.

[0024] As shown in FIG. 3, the communication terminal 50 is a computer and includes a CPU 501, a ROM 502, a RAM 503, an SSD 504, an external device connection I / F (Interface) 505, a network I / F 506, a display 507, an input device 508, a media I / F 509, and a bus line 510.

[0025] Of these, the CPU 501 controls the overall operation of the communication terminal 50. The ROM 502 stores programs such as IPL used to drive the CPU 501. The RAM 503 is used as a work area for the CPU 501.

[0026] The SSD 504 reads or writes various data under the control of the CPU 501. Note that instead of the SSD 504, an HDD (Hard Disk Drive) may be used.

[0027] The external device connection I / F 505 is an interface for connecting various external devices, such as a display, a speaker, a keyboard, a mouse, a USB memory, and a printer.

[0028] The network I / F 506 is an interface for performing data communication via the communication network 100 .

[0029] The display 507 is a type of display means such as a liquid crystal display or organic EL (Electro Luminescence) display that displays various images.

[0030] The input device 508 is a keyboard, a pointing device, etc., and is a type of input means for selecting and executing various instructions, selecting a processing target, moving a cursor, etc. When the user uses a keyboard, the pointing device function may be turned off.

[0031] The media I / F 509 controls reading and writing (storing) of data from and to a recording medium 509m such as a flash memory, etc. The recording medium 509m includes DVDs, Blu-ray Discs (registered trademarks), etc.

[0032] The bus line 510 is an address bus, a data bus, etc. for electrically connecting the components such as the CPU 501 shown in FIG.

[0033] [Functional configuration of this embodiment] Next, a functional configuration of the station placement design device 30 according to this embodiment will be described. Fig. 4 is a functional configuration diagram of the station placement design device according to this embodiment.

[0034] 4, the station design device 30 has an input / output unit 31, a radio wave propagation estimation unit 32, a quality evaluation index calculation unit 33, a quality leveling index calculation unit 34, a cost evaluation index calculation unit 35, a comprehensive evaluation index calculation unit 37, and a selection unit 39. Each of these units has a function realized by an instruction from the CPU 301 in FIG. 2 based on a program.

[0035] The input / output unit 31 inputs design environment information, design condition information, and design target information from the communication terminal 50. The input / output unit 31 also outputs the final design result. Examples of output include displaying on a display connected to the station placement design device 30, printing on a printer or the like connected to the station placement design device 30, or transmitting to the communication terminal 50 via the communication network 100.

[0036] "Design environment information" includes the size of the area for which the station is designed, the size and location of structures, whether or not they are obstructed, and a 3D map of the area.

[0037] The "design condition information" includes information indicating the type of 5G antenna (or type of equipment related to Wi-Fi AP), the number of base stations that can be installed (inventory, etc.), locations where base stations can be installed within the area targeted for station design (potential base station installation locations), evaluation locations for radio wave quality within the area targeted for station design, and the formula for calculating the overall evaluation index (coefficients, weighting, case distinctions, specified values, etc.).

[0038] The "design target information" includes information indicating the required received power (or throughput) at an evaluation position located within the station placement design target area.

[0039] The design environment information, design condition information, and design goal information may include information other than the above examples.

[0040] Here, the station placement design target area will be described using FIG. 5. FIG. 5 is a conceptual diagram of the station placement design target area. FIG. 5 describes an indoor area, but it may also be an outdoor area. As shown in FIG. 5, within the station placement design target area, a plurality of installation position candidates c1 to c6 are set at various locations on the ceiling, evaluation positions e1, e2, etc. for radio wave quality at various locations on the floor, and structures s1, etc. are set. In FIG. 5, for example, evaluation positions indicated by white circles such as evaluation position e1 are locations where devices that can only receive 5G radio waves are installed, and evaluation positions indicated by black circles such as evaluation position e2 are locations where devices that can receive both 5G and Wi-Fi radio waves are installed. Note that this is just an example, and the evaluation positions indicated by white circles such as evaluation position e1 may also be locations where devices that can only receive Wi-Fi radio waves are installed. Furthermore, evaluation positions e1 and e2 may also be locations where devices that can receive radio waves other than 5G or Wi-Fi, such as 4G, are installed.

[0041] The installation position candidates c1 to c6 are collectively referred to as "installation position candidates c." The evaluation positions e1, e2, etc. are collectively referred to as "evaluation position e." Furthermore, the structure s1, etc. are collectively referred to as "structure s." Furthermore, the numbers of installation position candidates c, evaluation positions e, and structures s shown in FIG. 5 are merely examples, and are not limited to the numbers shown in FIG. 5.

[0042] The station placement design device 30 of this embodiment selects one or more optimal combinations from multiple installation location candidates c, based on the installation location candidate c for the 5G base station and the installation location of the Wi-Fi base station (AP (Access Point) device). For example, in FIG. 5, a first combination is when a 5G base station is installed at installation location candidate c1 and a Wi-Fi base station is installed at installation location candidate c2, and a second combination is when a 5G base station is installed at installation location candidate c1 and a Wi-Fi base station is installed at installation location candidate c3. By narrowing the station placement design target area, the station placement design device 30 can actually select multiple optimal combinations of installation location candidates.

[0043] Next, returning to FIG. 4 , the radio wave propagation estimating unit 32 calculates estimated received power (or throughput) by performing radio wave propagation estimation (simulation) such as ray tracing using a 3D model. Specifically, based on the design environment information and the design condition information, the radio wave propagation estimating unit 32 performs radio wave propagation estimation for each evaluation position where radio waves of at least one of the first communication method and the second communication method can be received from each base station associated with each combination of a first communication method (e.g., 5G) when installed in a first installation direction at a first installation location candidate and a second communication method (e.g., Wi-Fi) when installed in a second installation direction at a second installation location candidate, thereby calculating estimated received power (or throughput) at each evaluation position for each combination. The method of selecting the evaluation point for radio wave propagation estimation may be to calculate for all supported methods set for the evaluation point, or to randomly select a method (or network) to be used independently for each evaluation point. In the case of random selection, the frequency of selection may be weighted in proportion to the system throughput of each method (network).

[0044] When the radio wave propagation estimating unit 32 calculates the throughput, the throughput may be predicted from a conversion table of received power and throughput prepared in advance by acquiring experimental data or by link level simulation, for example.

[0045] The quality evaluation index calculation unit 33 calculates a quality evaluation index indicating the ratio of the number of predetermined evaluation positions that achieve the target received power in the design target information to the number of all evaluation positions for each combination of a first communication method (5G, etc.) when installed in a first installation direction at a first installation position candidate and a second communication method (Wi-Fi, etc.) when installed in a second installation direction at a second installation position candidate, using the estimated received power calculated by the radio wave propagation estimation unit 32. For example, if there are four evaluation positions e1, e2, e3, and e4, and three evaluation positions e1, e2, and e3 achieve (clear) the target received power when radio waves are output from each base station of the predetermined combination, the quality evaluation index for the base stations of the predetermined combination is 75%.

[0046] Furthermore, the quality evaluation index calculation unit 33 may use the estimated received power calculated by the radio wave propagation estimation unit 32 to calculate the achievement rate of the target received power at each evaluation position for each combination of a first communication method (5G, etc.) when installed in a first installation direction at a first installation position candidate and a second communication method (Wi-Fi, etc.) when installed in a second installation direction at a second installation position candidate, and calculate a quality evaluation index indicating the average of the achievement rates for each evaluation position. For example, if there are three evaluation positions e1, e2, and e3, and radio waves are output from a predetermined combination of base stations, and 110% of the target received power is achieved at evaluation position e1, only 90% of the target received power is achieved at evaluation position e2, and only 70% of the target received power is achieved at evaluation position e3, the quality evaluation index for the predetermined combination of base stations is 90% (=(110+90+70) / 3).

[0047] The target reception power (or throughput) is set in advance for each evaluation position.

[0048] Based on the quality evaluation index output by the quality evaluation index calculation unit, the quality leveling index calculation unit 34 calculates a quality leveling index for each combination of a first communication method (5G, etc.) when installed in a first installation direction at a first installation position candidate and a second communication method (Wi-Fi, etc.) when installed in a second installation direction at a second installation position candidate. This quality leveling index indicates the variance of the quality evaluation index.

[0049] The cost evaluation index calculation unit 35 calculates a cost evaluation index for each combination (a predetermined type of antenna (or a predetermined type of AP device) when installed in a predetermined installation direction at a predetermined installation position candidate) based on the cost information of each base station in the design condition information, for example, using the following (Equation 1): A and B are predetermined values ​​included in the design condition information.

[0050] Cost evaluation index = (A - equipment cost) × B (Equation 1) The overall evaluation index calculation unit 37 calculates the overall evaluation index for each combination (a predetermined type of antenna when installed in a predetermined installation direction at a predetermined installation position candidate) by multiplying the quality evaluation index, quality leveling index, and cost evaluation index by the corresponding coefficients (α, β, γ) in the design condition information. The overall evaluation index calculation unit 37 calculates the overall evaluation index using, for example, the following (Equation 2).

[0051] Overall evaluation index = α × target received power achievement rate + β × quality leveling index + γ × cost evaluation index (Equation 2) The comprehensive evaluation index calculation unit 37 may first narrow down the quality evaluation indexes to those equal to or greater than a predetermined value, and then calculate a quasi-comprehensive evaluation index based on the quality leveling index and cost evaluation index corresponding to the narrowed-down quality evaluation index. The quasi-comprehensive evaluation index is calculated, for example, using the following formula (Formula 3).

[0052] Semi-comprehensive evaluation index = β × quality leveling index + γ × cost evaluation index (Equation 3) The selection unit 39 selects a combination (a combination of a candidate installation location and installation direction for a base station of a first communication method (such as 5G) and a candidate installation location and installation direction for a base station of a second communication method (such as Wi-Fi)) related to the maximum overall evaluation index or quasi-comprehensive evaluation index (or the top N (predetermined number) of overall evaluation indexes or quasi-comprehensive evaluation indexes) and outputs the selection result.

[0053] 8 is a diagram showing the indices calculated for each combination of a 5G base station installation location candidate and installation direction and a Wi-Fi base station installation location candidate and installation direction. As shown in FIG. 8, for each base station associated with a combination of a first communication method (e.g., 5G) when installed in a first installation direction at a first installation location candidate and a second communication method (e.g., Wi-Fi) when installed in a second installation location candidate and a second installation direction, the quality evaluation index calculated by the quality evaluation index calculation unit 33, the quality leveling index calculated by the quality leveling index calculation unit 34, the cost evaluation index calculated by the cost evaluation index calculation unit 35, and the overall evaluation index calculated by the overall evaluation index calculation unit 37 are listed. In this case, the selection unit 39 selects the combination associated with the maximum overall evaluation index of "9.75" (the combination of the 5G base station at the installation location candidate "c1" and the installation direction "d2" and the Wi-Fi base station at the installation location candidate "c5" and the installation direction "d1") and outputs the selection result.

[0054] [Processing or Operation of This Embodiment] Next, the processing or operation of the station placement design device 30 will be described with reference to Figures 6 to 8. Figures 6 and 7 are flowcharts showing a station placement design method executed by the station placement design device according to this embodiment.

[0055] S11: The input / output unit 31 inputs design environment information, design condition information, and design goal information from the communication terminal 50 or the like.

[0056] S12: Based on the design environment information and the design condition information, the radio wave propagation estimation unit 32 calculates the estimated received power (or throughput) at each evaluation position by performing radio wave propagation estimation for each evaluation position where at least one of radio waves of the first communication method (5G, etc.) and the second communication method (Wi-Fi, etc.) can be received from each combination of a base station of a first communication method (5G, etc.) when installed in a first installation direction at a first installation location candidate and a base station of a second communication method (Wi-Fi, etc.) when installed in a second installation direction at a second installation location candidate.

[0057] S13: The quality evaluation index calculation unit 33 calculates a quality evaluation index based on the estimated received power (or throughput) relative to the target received power in the design target information.

[0058] S14: The quality leveling index calculation unit 34 calculates a quality leveling index based on the quality evaluation index.

[0059] S15: The cost evaluation index calculation unit 35 calculates each cost evaluation index based on the cost information of each base station in the design condition information.

[0060] S16: The overall evaluation index calculation unit 37 calculates an overall evaluation index by multiplying the quality evaluation index, the quality leveling index, and the cost evaluation index by the corresponding coefficients in the design condition information.

[0061] S17: The selection unit 39 selects a combination (a combination of a candidate installation location and installation direction of a base station of the first communication method (5G, etc.) and a candidate installation location and installation direction of a base station of the second communication method (Wi-Fi, etc.)) related to the maximum overall evaluation index (or the top N overall evaluation indexes) and outputs the selection result.

[0062] S18: The input / output unit 31 outputs the selection result from the selection unit 36 ​​as the design result.

[0063] This completes the description of the processing or operation of this embodiment.

[0064] [Effects of this embodiment] As described above, according to this embodiment, even if, for example, a device that can only receive radio waves of the 5G communication method is installed, a device that can only receive radio waves of the Wi-Fi communication method is installed, or a device that can receive radio waves of both communication methods is installed, it is possible to achieve the effect of enabling appropriate station placement design for wireless communication base stations.

[0065] [Other examples] The selection unit 39 may calculate a quality evaluation index for each combination of a first communication method (e.g., 5G) when the device is installed in a first installation orientation at a first installation location candidate and a second communication method (e.g., Wi-Fi) when the device is installed in a second installation orientation at a second installation location candidate, select multiple combinations whose quality evaluation index is equal to or greater than a predetermined value, and select a specific combination from among these combinations whose quasi-comprehensive evaluation index has been calculated. For example, in FIG. 8, the selection unit 39 selects multiple combinations (the first, second, and third from the top in FIG. 8) whose quality evaluation indexes (95%, 90%, and 95%) exceed a predetermined value (e.g., 85%), and selects a specific combination from among these combinations whose quasi-comprehensive evaluation index has been calculated. That is, the selection unit 39 narrows down the quality evaluation indexes to a predetermined number whose quality evaluation indexes are equal to or greater than a predetermined value, thereby eliminating quality evaluation indexes whose quality evaluation indexes are less than the predetermined value.

[0066] In this case, the comprehensive evaluation index calculation unit 37 calculates a quasi-comprehensive evaluation index for each of the combinations based on the quality leveling index and the cost evaluation index.

[0067] This is effective when the quality evaluation index is more important than the cost, even when the cost of the base station is taken into consideration.

[0068] 〔supplement〕 The present invention is not limited to the above-described embodiment, and may have the following configurations or processes (operations).

[0069] (1) The station placement design device 30 can be realized by a computer and a program, but this program can also be recorded on a (non-transitory) recording medium or provided via the communication network 100.

[0070] (2) In the above embodiment, a notebook computer is shown as an example of the communication terminal 50, but this is not limited to this and may be, for example, a desktop computer, a tablet terminal, a smartphone, a smartwatch, a car navigation device, a refrigerator, a microwave oven, etc.

[0071] (3) Each CPU 301, 501 may be a single CPU or may be multiple CPUs.

[0072] (4) In the above embodiments, the radio wave propagation estimating unit 32 estimates the received power at each evaluation position e by radio wave propagation estimation (simulation) such as ray tracing using a 3D model, but the present invention is not limited to this. For example, the radio wave propagation estimating unit 32 may actually measure and predict the received power by calibrating the radio wave propagation estimation result based on actual measurement data at each evaluation position (part of each evaluation position).

[0073] (5) Furthermore, the station placement design device may perform station placement design for other generations of mobile communication systems, such as 4G and 6G, instead of 5G. [Explanation of symbols]

[0074] 10. Communication Systems 30 Station location design device 31 Input / output section 32 Radio wave propagation estimation unit 33 Quality evaluation index calculation unit 34 Quality leveling index calculation section 35 Cost evaluation index calculation section 37 Comprehensive Evaluation Index Calculation Department 39 Selection section

Claims

1. A station placement design device that designs installation of a wireless communication base station within a station placement design target area, a radio wave propagation estimating unit that calculates an estimated received power at each evaluation position for each combination by performing radio wave propagation estimation for each evaluation position at which radio waves of at least one of the first communication method and the second communication method can be received from each base station associated with each combination of the first communication method when installed in a first installation direction at a first installation position candidate and the second communication method when installed in a second installation direction at a second installation position candidate; a quality evaluation index calculation unit that calculates, using the estimated received power, a quality evaluation index indicating a ratio of the number of predetermined evaluation positions that have achieved the target received power to the number of all evaluation positions in each of the combinations; a quality leveling index calculation unit that calculates a quality leveling index for each of the combinations based on the quality evaluation index; a cost evaluation index calculation unit that calculates a cost evaluation index for each combination based on cost information of each base station; a comprehensive evaluation index calculation unit that calculates a comprehensive evaluation index for each of the combinations based on the quality evaluation index, the quality leveling index, and the cost evaluation index; a selection unit that selects, from among the combinations, a single combination for which the maximum overall evaluation index is calculated, or a plurality of combinations for which a predetermined number of top-ranked standard overall evaluation indexes are calculated; A station placement design device having the same.

2. 2. The station design device according to claim 1, wherein, instead of using the estimated received power to calculate a quality evaluation index indicating a ratio of the number of predetermined evaluation positions that have achieved the target received power to the number of all evaluation positions in each of the combinations, the quality evaluation index calculation unit uses the estimated received power to calculate an achievement rate for the target received power at each evaluation position in each of the combinations, and calculates a quality evaluation index indicating an average of the achievement rates for each evaluation position.

3. the radio wave propagation estimating unit calculates a throughput at each evaluation position for each of the combinations instead of the estimated received power at each evaluation position for each of the combinations; the quality evaluation index calculation unit calculates the quality evaluation index using an estimated received power corresponding to the throughput. The station placement design device according to claim 1 or 2.

4. The station location design device according to claim 1 , wherein each of the evaluation positions is a position where a device capable of receiving radio waves of at least one of the first communication method and the second communication method is installed.

5. A station placement design device that designs installation of a wireless communication base station within a station placement design target area, a radio wave propagation estimating unit that calculates an estimated received power at each evaluation position for each combination by performing radio wave propagation estimation for each evaluation position at which radio waves of at least one of the first communication method and the second communication method can be received from each base station associated with each combination of the first communication method when installed in a first installation direction at a first installation position candidate and the second communication method when installed in a second installation direction at a second installation position candidate; a quality evaluation index calculation unit that calculates, using the estimated received power, a quality evaluation index indicating a ratio of the number of predetermined evaluation positions that have achieved the target received power to the number of all evaluation positions in each of the combinations; a quality leveling index calculation unit that calculates a quality leveling index for each of the combinations based on the quality evaluation index; a cost evaluation index calculation unit that calculates a cost evaluation index for each combination based on cost information of each base station; a comprehensive evaluation index calculation unit that calculates a quasi-comprehensive evaluation index for each of the combinations based on the quality leveling index and the cost evaluation index; a selection unit that selects a plurality of combinations for which quality evaluation indexes equal to or greater than a predetermined value are calculated from the quality evaluation indexes of the respective combinations, and selects a specific combination for which a maximum quasi-comprehensive evaluation index is calculated from the plurality of combinations; A station placement design device having the same.

6. 6. The station placement design device according to claim 5, wherein, instead of using the estimated received power to calculate a quality evaluation index indicating a ratio of the number of predetermined evaluation positions that have achieved the target received power to the number of all evaluation positions in each of the combinations, the quality evaluation index calculation unit uses the estimated received power to calculate an achievement rate for the target received power at each evaluation position in each of the combinations, and calculates a quality evaluation index indicating an average of the achievement rates for each evaluation position.

7. A program for causing a computer to execute a station placement design method for designing the installation of a wireless communication base station within a station placement design target area, a radio wave propagation estimation process for calculating an estimated received power at each evaluation position for each combination by performing radio wave propagation estimation for each evaluation position at which radio waves of at least one of the first communication method and the second communication method can be received from each base station associated with each combination of a first communication method when installed in a first installation direction at a first installation position candidate and a second communication method when installed in a second installation direction at a second installation position candidate; a quality evaluation index calculation process for calculating a quality evaluation index indicating a ratio of the number of predetermined evaluation positions that have achieved the target reception power to the number of all evaluation positions in each of the combinations using the estimated reception power; a quality leveling index calculation process for calculating a quality leveling index for each of the combinations based on the quality evaluation index; a cost evaluation index calculation process for calculating a cost evaluation index for each combination based on the cost information of each base station; a comprehensive evaluation index calculation process for calculating a comprehensive evaluation index for each of the combinations based on the quality evaluation index, the quality leveling index, and the cost evaluation index; a selection process for selecting, from among the combinations, a single combination for which the maximum overall evaluation index is calculated, or a plurality of combinations for which a predetermined number of top-ranked standard overall evaluation indexes are calculated; A program that executes the following.

8. A program that causes a computer to execute a station placement design method for designing the installation of a wireless communication base station within a station placement design target area, a radio wave propagation estimation process for calculating an estimated received power at each evaluation position for each combination by performing radio wave propagation estimation for each evaluation position at which radio waves of at least one of the first communication method and the second communication method can be received from each base station associated with each combination of a first communication method when installed in a first installation direction at a first installation position candidate and a second communication method when installed in a second installation direction at a second installation position candidate; a quality evaluation index calculation process for calculating a quality evaluation index indicating a ratio of the number of predetermined evaluation positions that have achieved the target reception power to the number of all evaluation positions in each of the combinations using the estimated reception power; a quality leveling index calculation process for calculating a quality leveling index for each of the combinations based on the quality evaluation index; a cost evaluation index calculation process for calculating a cost evaluation index for each combination based on the cost information of each base station; a comprehensive evaluation index calculation process for calculating a quasi-comprehensive evaluation index for each of the combinations based on the quality leveling index and the cost evaluation index; a selection process of selecting a plurality of combinations for which quality evaluation indexes equal to or greater than a predetermined value are calculated from the quality evaluation indexes of the respective combinations, and selecting a specific combination for which a maximum quasi-comprehensive evaluation index is calculated from the plurality of combinations; A program that executes the following.

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