WO2022024260A1

WO2022024260A1 - Communication quality evaluation system, communication quality evaluation method, and communication quality evaluation program

Info

Publication number: WO2022024260A1
Application number: PCT/JP2020/029052
Authority: WO
Inventors: 匡史岩渕; 智明小川; 友規村上
Original assignee: 日本電信電話株式会社
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2022-02-03
Also published as: JP7452662B2; JPWO2022024260A1

Abstract

A communication quality evaluation system 1 that comprises an environment information acquisition unit 10 that acquires environment information about an area to be evaluated, an environment analysis unit 20 that refines the situation of the area to be evaluated on the basis of the environment information acquired by the environment information acquisition unit 10, a communication path calculation unit 40 that calculates communication path information on the basis of the situation of the area to be evaluated as refined by the environment analysis unit, and a quality calculation unit 70 that calculates the communication quality of a wireless communication system on the basis of the communication path information calculated by the communication path calculation unit 40. The environment analysis unit 20 infers the change and movement of objects on the basis of the environment information and generates object arrangement information on the basis of the inference results. The communication path calculation unit 40 calculates the communication path information on the basis of the object arrangement information generated by the environment analysis unit 20.

Description

Communication quality evaluation system, communication quality evaluation method and communication quality evaluation program

This disclosure relates to a communication quality evaluation system, a communication quality evaluation method, and a communication quality evaluation program.

The use of high frequency bands is attracting attention in order to realize high speed and large capacity of wireless access. For example, in the 5th generation mobile communication system (5G), high speed and large capacity are realized by using the 28 GHz band. For example, in the wireless LAN standard IEEE802.11ad (millimeter wave wireless LAN system), high speed and large capacity are realized by using the 60 GHz band. Further, by using a high frequency band, it is possible to secure a wide band, and it becomes easy to realize low delay communication.

Radio waves in the high frequency band are more easily attenuated than radio waves in the low frequency band, and have radio wave characteristics that are difficult to diffract. Radio waves in the high frequency band are susceptible to, for example, objects (shields) such as people, vehicles, and trees in the area. The radio wave characteristics of radio waves in the high frequency band change significantly due to factors such as the movement of people and vehicles, and changes in the amount of leaves of trees.

The performance of the wireless communication system also changes due to such changes in radio wave characteristics. However, in the best-effort wireless communication system that has been widely deployed in the past, the communication itself was maintained even if the performance fluctuated, and no major problem occurred.

On the other hand, with the diversification of services by wireless communication systems, strict network requirements according to each service are now required. For example, there is an increasing need for accurate evaluation of communication quality in maintenance during construction of a wireless network or during operation after construction. In addition, different communication qualities may be required for each area. For example, there is a need to guarantee a certain quality only in a specific area.

In order to meet the above-mentioned needs, it is necessary to evaluate the communication quality of the wireless communication system. The evaluation of the communication quality of the wireless communication system is performed, for example, for the station design for achieving the desired communication quality in the desired area before the network construction. Further, the evaluation of the communication quality of the wireless communication system is used, for example, for investigating the cause when a communication abnormality occurs after the network is constructed.

In order to build a wireless communication system that guarantees communication quality above a certain level, it is necessary to evaluate the communication quality in consideration of changes in radio wave characteristics. As a conventional method for evaluating communication quality, for example, there is a method of taking a measuring instrument to an actual site and performing measurement. As such a method, Non-Patent Document 1 discloses a tool for visualizing and evaluating the behavior of radio wave propagation in the field by AR (Augmented Reality) technology.

However, although the evaluation method based on actual measurement in the field is effective in that changes in actual radio wave characteristics can be taken into consideration, it takes a lot of time and effort to evaluate the communication quality in a wide area. There is a problem. In addition, in the evaluation method by actual measurement, when the environment in the area changes, it is necessary to measure again, and for example, it is not possible to deal with the case where the environment in the area changes in a short time. There are challenges.

Based on the above issues, network simulators, radio wave propagation simulators, etc. have been conventionally provided as tools for evaluating communication quality without going to the site.

The network simulator is a tool for evaluating communication quality by performing calculations based on a radio wave propagation model modeled in advance. When using a network simulator, modeling by the user is required. For example, the work of modeling considering the influence of structures such as people, vehicles and trees is complicated. In addition, if proper modeling is not performed, the radio wave characteristics peculiar to the area cannot be fully considered.

The radio wave propagation simulator is a tool that evaluates received power, etc. based on information in the area to be evaluated for communication quality. According to the radio wave propagation simulator, the communication quality can be evaluated after considering the radio wave characteristics peculiar to the area. However, the conventional radio wave propagation simulator performs static calculation on the premise that changes in structures such as people, vehicles, and trees are not taken into consideration, and cannot cope with changes in the environment in the area as described above.

As shown above, the conventional communication quality evaluation method and evaluation tool have a problem that it is difficult to respond to changes in the environment in the area to be evaluated. This disclosure is made to solve such a problem. An object of the present disclosure is to provide a communication quality evaluation system, a communication quality evaluation method, and a communication quality evaluation program capable of responding to changes in the environment in the area to be evaluated.

The communication quality evaluation system according to one aspect of the present disclosure includes an environment information acquisition unit that acquires environmental information of the evaluation target area and an environment that details the status of the evaluation target area based on the environmental information acquired by the environmental information acquisition unit. An analysis unit, a communication path calculation unit that calculates communication path information based on the status of the evaluation target area detailed by the environment analysis unit, and a wireless communication system based on the communication path information calculated by the communication path calculation unit. It is equipped with a quality calculation unit that calculates communication quality. The environmental analysis unit estimates the change and movement of the object based on the environmental information, and generates the object placement information based on the estimation result. Then, the channel calculation unit calculates the channel information based on the object arrangement information generated by the environment analysis unit.

In addition, the communication quality evaluation method according to one aspect of the present disclosure details the status of the evaluation target area based on the environmental information acquisition process for acquiring the environmental information of the evaluation target area and the environmental information acquired in the environmental information acquisition process. An environmental analysis process to be performed, a communication path calculation process for calculating communication path information based on the status of the evaluation target area detailed by the environmental analysis process, and wireless communication based on the communication path information calculated by the communication path calculation process. It includes a quality calculation process for calculating the communication quality of the communication system. In the environmental analysis step, changes and movements of an object are estimated based on environmental information, and object placement information is generated based on the estimation results. Then, in the communication path calculation step, the communication path information is calculated based on the object arrangement information generated by the environment analysis step.

According to the present disclosure, it is possible to provide a communication quality evaluation system, a communication quality evaluation method, and a communication quality evaluation program that can respond to changes in the environment in the area to be evaluated.

It is a figure which shows the configuration example of the communication quality evaluation system which concerns on Embodiment 1. FIG. It is a figure which shows the structural example of the environmental analysis part which concerns on Embodiment 1. FIG. It is a figure which shows the example of the hardware configuration which realizes each function of a communication quality evaluation system.

The embodiment will be described with reference to the attached drawings. In this disclosure, duplicate explanations will be simplified or omitted as appropriate. Further, the present disclosure is not limited to the following embodiments. The present disclosure may include various modifications and combinations of configurations disclosed by the following embodiments, to the extent that they do not deviate from that purpose.

Embodiment 1.
FIG. 1 is a diagram showing a configuration example of the communication quality evaluation system 1 according to the first embodiment. The communication quality evaluation system 1 is a device used to evaluate the communication quality of an arbitrary wireless communication system. The communication quality evaluation system 1 is particularly preferably used for evaluating the communication quality of a wireless communication system using a high frequency band, which is considered to be greatly affected by changes in the environment in the area. As shown in FIG. 1, the communication quality evaluation system 1 includes an environmental information acquisition unit 10, an environment analysis unit 20, a communication path calculation input unit 30, a communication path calculation unit 40, a communication path database 50, and a quality calculation input unit 60. It includes a quality calculation unit 70, a quality database 80, and an output display unit 90.

The environmental information acquisition unit 10 acquires environmental information of the area to be evaluated for communication quality. In this disclosure, the area to be evaluated for communication quality is also referred to as "evaluation target area". The environmental information is, for example, image information acquired by a camera. Further, the environmental information may be, for example, radio wave information such as received power information acquired by radio wave sensing, radio wave arrival time information, or channel information. Location information is associated with the environment information acquired by the environment information acquisition unit 10, and the environment information and the location information are recorded together.

The environmental analysis unit 20 refines the status of the evaluation target area based on the environmental information acquired by the environmental information acquisition unit 10. In the example of FIG. 1, the environmental information is directly input from the environmental information acquisition unit 10 to the environmental analysis unit 20, but may be indirectly input via another device or the like. A more detailed configuration of the environmental analysis unit 20 will be described later. As a result of the processing by the environment analysis unit 20, the object arrangement information and the arrangement identification number (arrangement ID) are output.

The communication channel calculation input unit 30 is for inputting various information necessary for the calculation. The communication path calculation input unit 30 is, for example, a radio parameter for inputting radio parameters, station information, topography / structure information, for example, frequency, bandwidth, transmission power, antenna pattern, and other radio propagation paths. Means various parameters used in the calculation of. Station information means information such as the arrangement of transmission points and reception points. Further, the channel calculation input unit 30 may be configured so that the range of the area to be calculated using the topographical / structural information can be specified.

The communication path calculation input unit 30 outputs, for example, topography / structure information to the environment analysis unit 20. The terrain / structure information input to the environment analysis unit 20 is refined together with the above-mentioned environment information, and is output from the environment analysis unit 20 as object placement information.

Further, the communication path calculation input unit 30 outputs, for example, radio parameters, station placement information, and the above-mentioned object arrangement information to the communication path calculation unit 40. When the above-mentioned environmental information is not used, the channel calculation input unit 30 may output terrain / structure information to the channel calculation unit 40 instead of the object arrangement information.

The communication channel calculation input unit 30 assigns an input ID for determining the set value. The input ID is generated and given each time a different parameter is input. The channel calculation input unit 30 integrates the input ID and the arrangement ID output from the environment analysis unit and outputs the channel ID to the channel database 50. By using the channel ID, it is possible to quote from what input parameter the calculation result in the channel calculation unit 40 is calculated.

The communication path calculation unit 40 calculates the communication path information which is the information of the wireless communication path by using the information input from the communication path calculation input unit 30. The communication path information calculated by the communication path calculation unit 40 synthesizes, for example, the propagation path from the transmission point to the reception point, the reception power of each propagation path, the amplitude, the phase, the path delay, and all the propagation paths at the reception point. The channel information obtained from the above, etc. The communication path calculation unit 40 may output calculation results other than these as communication path information.

The channel database 50 records the calculation result output from the channel calculation unit 40 and the channel ID output from the channel calculation input unit 30 in association with each other. The communication path ID associated with the calculation result output from the communication path calculation unit 40 is a communication path ID corresponding to the information used in the calculation of the calculation result.

The quality calculation input unit 60 inputs network information and desired communication path information as parameters necessary for calculating the communication quality of the wireless communication system based on the calculation result in the communication path calculation unit 40. The network information means, for example, a communication protocol, the number of terminals constituting the network, a higher-level routing configuration of the wireless network, a traffic pattern, and various other parameters related to the evaluation of network performance. The communication protocol may be a protocol specified in a communication standard or an arbitrarily designed protocol.

The communication channel database 50 has a function of referring to a calculation result recorded using desired communication channel information input by the quality calculation input unit 60. The desired communication path information is specified by the user, for example, as a condition of the communication path to be evaluated. For example, the communication channel database 50 searches for a communication path ID that matches the conditions specified as desired communication path information, and outputs a calculation result corresponding to the communication path ID obtained as the search result. The channel database 50 is configured so that the user selects an arbitrary channel ID from the list of search results of the channel IDs that match the specified conditions, and outputs the calculation result corresponding to the selected channel ID. May be done. Further, the communication path database 50 may be configured so that the communication path ID can be directly referred to as desired communication path information and the corresponding calculation result can be output.

The quality calculation input unit 60 assigns a quality calculation input ID for determining the set value. The quality calculation input ID is generated and given each time different network information or desired communication path information is input. By using the quality calculation input ID, it is possible to quote what kind of input parameter the result calculated by the quality calculation unit is calculated.

The quality calculation input unit 60 outputs network information to the quality calculation unit 70. The quality calculation input unit 60 outputs desired communication path information to the communication path database 50. The quality calculation input unit 60 outputs the quality calculation input ID to the quality database 80.

The quality calculation unit 70 calculates the communication quality of the wireless communication system based on the communication path information calculated by the communication path calculation unit. Communication quality is, for example, throughput, packet delay, packet reception success rate, and other communication performance. An evaluation value arbitrarily defined to express communication performance may be applied as communication quality. In the present embodiment, the quality calculation unit 70 calculates the communication quality by using the communication path information input from the communication path database 50 and the network information input from the quality calculation input unit. The quality calculation unit 70 outputs the calculation result to the quality database 80.

The quality database 80 records the calculation result output from the quality calculation unit 70 and the quality calculation input ID output from the quality calculation input unit in association with each other. The quality calculation input ID associated with the calculation result output from the quality calculation unit 70 is a quality calculation input ID corresponding to the information used for the calculation of the calculation result.

The quality database 80 has a function of outputting the recorded information to the output display unit 90. The quality database 80 outputs the calculation result corresponding to the quality calculation input ID designated by the output display unit 90. The quality database 80 may be configured to search for a quality calculation input ID that matches the conditions specified in the output display unit 90, and output a calculation result corresponding to the quality calculation input ID obtained as the search result. .. Further, the quality database 80 so that the user selects an arbitrary quality calculation input ID from the list of search results of the quality calculation input ID that matches the specified condition, and outputs the calculation result corresponding to the selected quality calculation input ID. It may be configured.

The output display unit 90 refers to the calculation result recorded in the quality database 80 and visualizes and displays it as a graph. The user may specify an arbitrary calculation result to be displayed on the output display unit 90, and the output display unit 90 may display the specified calculation result. The user may directly specify, for example, the quality calculation input ID. Further, the output display unit 90 may display the calculation result corresponding to the quality calculation input ID that matches the specified condition by designating the condition of the communication path or the condition of the network that the user wants to display.

FIG. 2 is a diagram showing a configuration example of the environmental analysis unit 20 according to the first embodiment. The environmental analysis unit 20 is configured to estimate changes and movements of an object based on environmental information and generate object placement information based on the estimation results. Specifically, as shown in FIG. 2, the environment analysis unit 20 is from the analysis unit 21, the object change estimation unit 22, the object change database 23, the object movement estimation unit 24, the object movement database 25, and the object arrangement generation unit 26. It is composed.

The analysis unit 21 analyzes and evaluates the environmental information, and detects and determines the object type, the object position, and the environment type included in the environmental information. The analysis unit 21 may perform analysis using a plurality of environmental information. Further, the analysis unit 21 may perform an analysis using dynamic environmental information within a certain period of time.

The object type means, for example, the type of a structure such as a person, a vehicle, or a tree. The environment type means, for example, whether it is outdoors or indoors, and if it is outdoors, it means an office district, a residential area, a suburb, a tourist spot, or the like. The object type and environment type are not limited to the above examples.

The detection and determination process by the analysis unit 21 is performed by comparing the information group recorded / learned in advance with the environmental information to be analyzed. The detection and determination processing by the analysis unit 21 is executed by using, for example, machine learning. The analysis unit 21 outputs information on the object type, the object position, and the environment type as a result of the analysis and evaluation of the environmental information.

The object change estimation unit 22 estimates the time-dependent change of the object whose state changes. An object whose state changes is, for example, a tree whose leaf amount changes.

The object change estimation unit 22 inquires about the object change database 23 for the object type included in the information based on the information output from the analysis unit 21. The object change estimation unit 22 acquires time change information corresponding to the object type from the object change database 23.

Time change information is information related to the time change of an object. For example, the time change information when the object is a tree is information such as a change in the shape of the tree and a change in the amount of leaves due to a change in the season. Only characteristic information at a specific time or season may be extracted as time-varying information that is actually used.

The object change estimation unit 22 links the object type, the object position, and the time change information, and outputs the object arrangement generation unit 26. For example, when 10 patterns of time change information are used, 10 sets of object type, object position, and time change information are output.

The object change database 23 records time change information corresponding to the object type. The object change database 23 outputs necessary information to the object change estimation unit 22 in response to the notification from the object change estimation unit 22.

The object movement estimation unit 24 estimates the movement path, movement speed, and appearance frequency of the object. The object movement estimation unit 24 estimates the movement path and movement speed of the object from the object type and the object position included in the information output from the analysis unit 21. For example, the movement path and movement speed of an object can be estimated by calculating the change in the position of the same object based on the object type and the object position obtained from a plurality of temporally continuous environmental information. .. Further, by obtaining the number of specific objects at regular intervals, the appearance frequency of the objects can be estimated.

The object movement database 25 records the movement speed, appearance frequency, and congestion degree (number of appearances) of objects corresponding to various environment types. The object movement estimation unit 24 may refer to the information recorded in the object movement database 25 and acquire the environment information corresponding to the environment type included in the information output from the analysis unit 21 from the object movement database 25. .. The object movement estimation unit 24 may use the information acquired from the object movement database 25 to supplement information that cannot be estimated from the information obtained from the analysis unit 21. For example, when the environmental information can be acquired only in a specific time zone such as the daytime zone, the information acquired from the object movement database 25 may be used to estimate the movement of the object in the night zone.

The reference to the object movement database 25 is not based on the environment type output by the analysis unit 21, but may be performed by the environment information itself. The object movement estimation unit 24 may acquire information on the environment close to the area to be evaluated from the object movement database 25 by using the environment information itself.

When estimating the movement path of an object, the object movement estimation unit 24 may estimate the movement path so that the object does not collide with a structure or the like by using the terrain / structure information. Further, the estimation result of the movement path of the object may be corrected by referring to the map data. For example, after the object movement estimation unit 24 estimates the movement route of the object, the correction is made so that the road closest to the estimation result among the roads on the map data (for example, the roadway when the object is a vehicle) is set as the movement route. You may go.

The object movement estimation unit 24 outputs the estimated movement path, movement speed, and appearance frequency of the object to the object arrangement generation unit 26. The object movement estimation unit 24 may extract and output estimation results of a characteristic movement path, movement speed, and appearance frequency of a characteristic object in a specific time zone. Further, the object movement estimation unit 24 may output the estimation result of the arrangement and the number of objects at regular time intervals in an arbitrarily set fixed period as an arrangement pattern. For example, when it is desired to evaluate the communication quality every second in one minute, 60 patterns of arrangement patterns reflecting the movement of the object are output.

The object arrangement generation unit 26 reflects the estimation results of the object change estimation unit 22 and the object movement estimation unit 24 in the terrain / structure information to generate the object arrangement information. When there are a plurality of object arrangement information, the state of the object or the information on the arrangement of the objects included in each object arrangement information is different from each other. When there are a plurality of object placement information, a placement ID corresponding to each object placement information is assigned. The object placement information includes time information.

As shown above, the communication quality evaluation system 1 according to the present embodiment evaluates based on the environmental information acquisition unit 10 that acquires the environmental information of the evaluation target area and the environmental information acquired by the environmental information acquisition unit 10. The environment analysis unit 20 that details the status of the target area, the communication path calculation unit 40 that calculates the communication path information based on the status of the evaluation target area detailed by the environment analysis unit 20, and the communication path calculation unit 40. A quality calculation unit 70 for calculating the communication quality of the wireless communication system based on the calculated communication path information is provided. The environment analysis unit 20 estimates the change and movement of the object based on the environment information, generates the object arrangement information based on the estimation result, and the communication path calculation unit 40 generates the object arrangement information generated by the environment analysis unit 20. It is characterized in that the communication path information is calculated based on. With the communication quality evaluation system 1 configured in this way, it is possible to accurately evaluate the communication quality in a specific area in consideration of the movement and change of the object in the area. For example, area-specific network performance such as throughput and delay can also be evaluated. According to this embodiment, it is possible to provide a communication quality evaluation system 1 capable of responding to changes in the environment in the area to be evaluated. The communication quality evaluation system 1 can also be provided as a communication quality evaluation method.

Further, the communication quality evaluation system 1 according to the present embodiment includes a communication path database 50 that stores communication path information calculated by the communication path calculation unit 40. Then, the quality calculation unit 70 calculates the communication quality of the wireless communication system based on the communication path information stored in the communication path database 50. By performing calculations assuming various scenarios in advance and creating a database of the calculation results, it is possible to omit the complicated work of inputting the conditions necessary for the calculation in advance. In addition, it is possible to support the evaluation of communication quality in areas of various environments.

The communication quality evaluation system 1 according to the present embodiment is designated among the quality database 80 that stores the communication quality calculation results calculated by the quality calculation unit 70 and the communication quality calculation results stored in the quality database 80. An output display unit 90 that outputs a calculation result corresponding to the condition is provided. By accumulating the calculation results of communication quality in advance and creating a database, more accurate evaluation of communication quality becomes possible.

Even if some or all of the functions of the communication quality evaluation system 1 are realized by using hardware such as ASIC (Application Specific Integrated Circuit), PLD (Programmable Logic Device) or FPGA (Field Programmable Gate Array). good. Each function of the communication quality evaluation system 1 may be realized by a combination of dedicated hardware and software. Further, each function of the communication quality evaluation system 1 may be partially or wholly configured as a program executed by a processor such as a CPU. The program may be recorded on a computer-readable storage medium.

For example, the communication quality evaluation system 1 can be realized by using a computer and a program, and the program can be recorded on a storage medium or provided through a network.

FIG. 3 is a diagram showing an example of a hardware configuration that realizes each function of the communication quality evaluation system 1. As shown in FIG. 3, each function of the communication quality evaluation system 1 is realized by, for example, an input unit 100, an output unit 110, a communication unit 120, a CPU 130, a memory 140, an HDD 150, and the like. The input unit 100, the output unit 110, the communication unit 120, the CPU 130, the memory 140, and the HDD 150 are connected via the bus 160 and have a function as a computer. Further, a computer composed of an input unit 100, an output unit 110, a communication unit 120, a CPU 130, a memory 140, an HDD 150, and the like can input and output data to and from a storage medium 170 readable by the computer. It has become.

The input unit 100 is, for example, a keyboard, a mouse, or the like. The output unit 110 is, for example, a display device such as a display. The communication unit 120 is, for example, a wireless network interface.

The CPU 130 controls each part constituting the communication quality evaluation system 1 and performs predetermined processing and the like. The memory 140 and the HDD 150 function as a storage unit for storing various data and the like.

The storage medium 170 stores a program for executing each function of the communication quality evaluation system 1. The architecture constituting the communication quality evaluation system 1 is not limited to the example shown in FIG.

In addition, the term "computer" here includes hardware such as an OS and peripheral devices. The "computer-readable storage medium" is, for example, a portable medium such as a flexible disk, a magneto-optical disk, a ROM, or a CD-ROM.

Furthermore, a "computer-readable storage medium" is a medium that dynamically holds a program for a short period of time, such as a communication line when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. May be. Further, the "computer-readable storage medium" may be one that holds a program for a certain period of time, such as a volatile memory inside a computer that is a server or a client.

1 Communication quality evaluation system 10 Environmental information acquisition unit 20 Environmental analysis unit 21 Analysis unit 22 Object change estimation unit 23 Object change database 24 Object movement estimation unit 25 Object movement database 26 Object placement generation unit 30 Communication path calculation Input unit 40 Communication path calculation 50 Communication path database 60 Quality calculation input section 70 Quality calculation section 80 Quality database 90 Output display section 100 Input section 110 Output section 120 Communication section 130 CPU
140 memory 150 HDD
160 bus 170 storage medium

Claims

The environmental information acquisition department that acquires environmental information of the evaluation target area,
An environmental analysis unit that refines the status of the evaluation target area based on the environmental information acquired by the environmental information acquisition unit, and an environmental analysis unit.
A channel calculation unit that calculates channel information based on the status of the evaluation target area detailed by the environmental analysis unit, and a channel calculation unit.
A quality calculation unit that calculates the communication quality of the wireless communication system based on the communication path information calculated by the communication path calculation unit, and a quality calculation unit.
Equipped with
The environmental analysis unit estimates the change and movement of the object based on the environmental information, generates the object arrangement information based on the estimation result, and generates the object arrangement information.
The communication path calculation unit is a communication quality evaluation system characterized by calculating communication path information based on object arrangement information generated by the environment analysis unit.
It is equipped with a channel database that stores the channel information calculated by the channel calculation unit.
The communication quality evaluation system according to claim 1, wherein the quality calculation unit calculates the communication quality of the wireless communication system based on the communication path information stored in the communication path database.
A quality database that stores the calculation results of communication quality calculated by the quality calculation unit, and
Of the communication quality calculation results stored in the quality database, an output display unit that outputs the calculation results corresponding to the specified conditions, and
The communication quality evaluation system according to claim 1 or 2, wherein the communication quality evaluation system is provided.
Environmental information acquisition process to acquire environmental information of the evaluation target area,
An environmental analysis process that refines the status of the evaluation target area based on the environmental information acquired in the environmental information acquisition process, and an environmental analysis process.
A channel calculation process that calculates channel information based on the status of the evaluation target area refined by the environmental analysis process, and a channel calculation process.
A quality calculation process for calculating the communication quality of a wireless communication system based on the communication path information calculated by the communication path calculation process, and a quality calculation process.
Equipped with
In the environmental analysis step, changes and movements of an object are estimated based on environmental information, and object placement information is generated based on the estimation results.
The communication path calculation step is a communication quality evaluation method characterized in that communication path information is calculated based on object arrangement information generated by the environment analysis step.
Further provided with a database creation process for accumulating the communication path information calculated by the communication path calculation process.
The communication quality evaluation method according to claim 4, wherein the quality calculation step calculates the communication quality of the wireless communication system based on the communication path information accumulated in the database creation step.
A communication quality evaluation program for operating a computer as each part of the communication quality evaluation system according to any one of claims 1 to 3.