WO2024013813A1 - Wireless communication system, control device, and control method - Google Patents

Wireless communication system, control device, and control method Download PDF

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Publication number
WO2024013813A1
WO2024013813A1 PCT/JP2022/027287 JP2022027287W WO2024013813A1 WO 2024013813 A1 WO2024013813 A1 WO 2024013813A1 JP 2022027287 W JP2022027287 W JP 2022027287W WO 2024013813 A1 WO2024013813 A1 WO 2024013813A1
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Prior art keywords
wireless communication
base station
information indicating
terminal
control device
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PCT/JP2022/027287
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French (fr)
Japanese (ja)
Inventor
俊朗 中平
亮太 椎名
辰彦 岩國
拓人 新井
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日本電信電話株式会社
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Priority to PCT/JP2022/027287 priority Critical patent/WO2024013813A1/en
Publication of WO2024013813A1 publication Critical patent/WO2024013813A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks

Definitions

  • the present invention relates to a wireless communication system, a control device, and a control method.
  • Non-Patent Document 1 discloses a wireless sensing method for detecting objects using machine learning.
  • Non-Patent Document 2 discloses a wireless sensing method for detecting birds and animals by analyzing fluctuations in wireless LAN radio waves.
  • the disclosed technology aims to facilitate the simplification of equipment for wireless sensing.
  • the disclosed technology is a wireless communication system including a terminal and a base station that transmit and receive signals to each other by optical wireless communication, and a control device that controls the base station, the control device controlling communication quality from the base station.
  • an information acquisition unit that acquires information indicating the communication quality; and a shielding detection unit that detects shielding that affects optical wireless communication between the base station and the terminal or other device based on the information indicating the communication quality.
  • This is a wireless communication system comprising:
  • FIG. 1 is a diagram illustrating an example of a configuration of a wireless communication system according to Example 1 of an embodiment of the present invention.
  • 1 is a diagram illustrating an example of a functional configuration of a control device according to Example 1 of an embodiment of the present invention
  • FIG. 1 is a diagram illustrating an example of a functional configuration of a base station according to Example 1 of the embodiment of the present invention
  • FIG. It is a flow chart which shows an example of the flow of detection processing concerning Example 1 of an embodiment of the present invention.
  • FIG. 2 is a diagram illustrating an example of the configuration of a wireless communication system according to Example 2 of the embodiment of the present invention. It is a figure showing an example of the functional composition of the control device concerning Example 2 of an embodiment of the present invention.
  • 12 is a flowchart illustrating an example of the flow of detection processing according to Example 2 of the embodiment of the present invention.
  • 1 is a diagram showing an example of a hardware configuration of a computer.
  • Example 1 and Example 2 will be described as specific examples of this embodiment.
  • Example 1 In this embodiment, an example will be described in which a visible light type optical wireless communication device is used for sensing purposes.
  • FIG. 1 is a diagram illustrating an example of the configuration of a wireless communication system according to Example 1 of the embodiment of the present invention.
  • the wireless communication system 1 includes a control device 10, a base station 20, a terminal 30, and a sensor 40.
  • the control device 10 is a device that controls optical wireless communication between the base station 20, the terminal 30, the sensor 40, etc.
  • the control device 10 is communicably connected to the base station 20 via a wired or wireless communication line.
  • the control device 10 acquires information indicating the quality of optical wireless communication from the base station 20, and detects the presence or absence of shielding that affects the optical wireless communication between the base station 20, the terminal 30, the sensor 40, and the like.
  • the base station 20 is a device that performs visible light optical wireless communication with the terminal 30, sensor 40, etc.
  • the base station 20 estimates the quality of optical wireless communication with the terminal 30, sensor 40, etc., and transmits information indicating the quality of optical wireless communication to the control device 10 based on the estimation result. Furthermore, the base station 20 transmits information indicating the position, direction, etc. of the terminal 30 to the control device 10.
  • the terminal 30 is a device that is used by a user and functions as a mobile station that moves with the user.
  • the communication state between the terminal 30 and the base station 20 changes depending on the position, direction, etc. of the terminal 30.
  • the sensor 40 is installed at a fixed location, and periodically transmits detected information to the base station 20 via optical wireless communication, for example.
  • FIG. 2 is a diagram illustrating an example of the functional configuration of a control device according to Example 1 of the embodiment of the present invention.
  • the control device 10 includes a communication section 11, an external input/output section 12, an arithmetic processing section 13, a storage section 14, an information acquisition section 15, and a shielding detection section 16.
  • the communication unit 11 transmits and receives information to and from the base station 20. Specifically, the communication unit 11 receives information indicating the quality of optical wireless communication and information indicating the position, direction, etc. of the terminal 30 from the base station 20. Furthermore, the communication unit 11 may transmit information indicating the shielding detected by the shielding detection unit 16 to the base station 20.
  • the external input/output unit 12 inputs data necessary for the calculation performed by the calculation processing unit 13 to the calculation processing unit 13, or outputs data as a result of the calculation performed by the calculation processing unit 13. Specifically, the external input/output unit 12 inputs the information received by the communication unit 11 to the arithmetic processing unit 13. Further, the external input/output unit 12 may output information indicating the shielding detected by the shielding detector 16.
  • the calculation processing unit 13 performs calculations based on the input data. Specifically, the calculation processing unit 13 performs calculations based on information indicating the quality of optical wireless communication and information indicating the position, direction, etc. of the terminal 30, and calculates a value for determining the presence or absence of shielding.
  • the storage unit 14 stores data necessary for calculation. Specifically, the storage unit 14 stores information indicating the quality of optical wireless communication, information indicating shielding detected by the shielding detection unit 16, and the like.
  • the information acquisition unit 15 acquires information indicating the quality of optical wireless communication and information indicating the position, direction, etc. of the terminal 30 from the base station 20 via the communication unit 11, external input/output unit 12, etc.
  • the shielding detection unit 16 detects shielding between the base station 20 and the terminal 30 or sensor 40. Specifically, the shielding detection unit 16 determines the presence or absence of shielding based on the calculation results by the calculation processing unit 13 regarding information indicating the quality of optical wireless communication and information indicating the position, direction, etc. of the terminal 30.
  • the shielding detection unit 16 determines that there is shielding when the quality of optical wireless communication has decreased based on information indicating the quality of optical wireless communication. You may. Furthermore, regarding communication between the base station 20 and the terminal 30, the shielding detection unit 16 detects the position of the terminal 30, based on information indicating the quality of optical wireless communication and information indicating the position, direction, etc. of the terminal 30. It may be determined that there is shielding when the quality of optical wireless communication is lower than the quality estimated from the direction or the like.
  • FIG. 3 is a diagram illustrating an example of the functional configuration of a base station according to Example 1 of the embodiment of the present invention.
  • the base station 20 includes a communication section 21 , an optical wireless communication quality estimation section 22 , a signal processing section 23 , and an optical wireless communication section 24 .
  • the communication unit 21 transmits and receives information to and from the control device 10. Specifically, the communication unit 21 transmits information indicating the quality of optical wireless communication and information indicating the position, direction, etc. of the terminal 30 to the control device 10. Further, the communication unit 21 may receive information indicating the shielding detected by the shielding detection unit 16 from the control device 10.
  • the optical wireless communication quality estimation unit 22 estimates the quality of optical wireless communication with the terminal 30 or the sensor 40 and sends information indicating the estimated quality of optical wireless communication to the control device 10 via the communication unit 21. Send.
  • the optical wireless communication quality estimating unit 22 may estimate the communication quality based on a change in the communication state, such as the failure of regularly transmitted and received data or the occurrence of a packet error.
  • the signal processing unit 23 processes signals transmitted and received in optical wireless communication with the terminal 30 or sensor 40.
  • the optical wireless communication unit 24 performs optical wireless communication with the terminal 30 or the sensor 40.
  • FIG. 4 is a flowchart showing an example of the flow of detection processing according to Example 1 of the embodiment of the present invention.
  • the control device 10 executes the detection process periodically or in response to a user's operation.
  • the information acquisition unit 15 acquires information indicating communication quality from the base station 20 (step S101).
  • the information acquisition unit 15 may acquire information indicating the position, direction, etc. of the terminal 30.
  • the shielding detection unit 16 detects shielding based on information indicating communication quality (step S102). Specifically, the shielding detection unit 16 detects shielding between the base station 20 and the sensor 40 when the communication quality has deteriorated. Further, the shielding detection unit 16 may detect shielding between the terminal 30 and the base station 20 based on information indicating communication quality and information indicating the position, direction, etc. of the terminal 30. In this case, the shielding detection unit 16 may determine that there is shielding when the quality of optical wireless communication is lower than the quality estimated from the position, direction, etc. of the terminal 30.
  • the communication unit 11 outputs information indicating the detected shielding to the base station 20 (step S103).
  • the base station 20 may schedule optical wireless communication based on the received information indicating shielding.
  • control device 10 detects shielding based on information indicating communication quality. This eliminates the need to add dedicated equipment for wireless sensing, making it easier to simplify the equipment and prevent increases in equipment costs.
  • Example 2 Example 2 will be described below with reference to the drawings.
  • the second embodiment differs from the first embodiment in that a heat source is detected in infrared optical wireless communication. Therefore, in the following explanation of the second embodiment, the differences from the first embodiment will be mainly explained, and parts having the same functional configuration as the first embodiment will be designated by the same reference numerals as used in the explanation of the first embodiment. A symbol is given and the explanation thereof is omitted.
  • FIG. 5 is a diagram illustrating an example of the configuration of a wireless communication system according to Example 2 of the embodiment of the present invention.
  • the wireless communication system 2 according to this embodiment includes a control device 10, a base station 20, and a sensor 40.
  • the base station 20 according to this embodiment communicates with the sensor 40 using infrared optical wireless communication.
  • the wireless communication system 2 detects the presence of a heat source by detecting infrared rays emitted by a heat source such as a person as noise.
  • FIG. 6 is a diagram illustrating an example of the functional configuration of a control device according to Example 2 of the embodiment of the present invention.
  • the control device 10 according to the present embodiment has a configuration in which a heat source detection section 17 is added to the control device 10 according to the first embodiment.
  • the information acquisition unit 15 acquires, for example, information indicating the signal-to-noise ratio of signals to be transmitted and received as information indicating communication quality from the base station 20.
  • the heat source detection unit 17 detects a heat source based on information indicating communication quality (for example, SN ratio). Specifically, if the heat source detection unit 17 determines that the noise floor has increased due to a decrease in the SN ratio or the like, it may determine that the heat source has approached.
  • information indicating communication quality for example, SN ratio
  • FIG. 7 is a flowchart showing an example of the flow of detection processing according to Example 2 of the embodiment of the present invention.
  • the information acquisition unit 15 acquires information indicating communication quality from the base station 20 (step S201).
  • the information acquisition unit 15 may acquire information indicating the SN ratio of signals transmitted and received by the base station 20.
  • the heat source detection unit 17 detects a heat source based on information indicating communication quality (step S202). Specifically, the heat source detection unit 17 detects a heat source near the base station 20 or the sensor 40 when the communication quality (for example, SN ratio) has decreased.
  • the communication quality for example, SN ratio
  • the communication unit 11 outputs information indicating the detected heat source to the base station 20 (step S203).
  • the base station 20 may schedule optical wireless communication based on the received information indicating the heat source.
  • control device 10 detects a heat source based on information indicating communication quality. This eliminates the need to add a dedicated device for detecting the heat source, making it easier to simplify the equipment and prevent increases in equipment costs.
  • wireless sensing at the terminal 30 may also be realized.
  • the control device 10 may acquire information indicating communication quality from the terminal 30 and detect shielding or a heat source based on the information.
  • control device 10 may perform information analysis using a combination of other wireless communication methods in addition to wireless devices using optical wireless communication methods.
  • the control device 10 may further estimate the communication quality using wireless LAN for a terminal determined to be shielded by optical wireless communication, and estimate the degree of shielding.
  • wireless sensing between a pair of base station 20 and a terminal 30 using an optical wireless communication system has been described, but wireless sensing between a base station 20 and a plurality of terminals 30 may also be performed.
  • the control device 10 may integrally analyze information collected from a plurality of base stations 20. For example, information indicating the communication quality not only between a certain base station 20 and a terminal 30 but also between a base station 20 and a terminal 30 adjacent to the base station 20 is acquired, and The magnitude of the shielding may be estimated.
  • the base station 20 may have a function of switching wireless communication methods or using them in combination as necessary. .
  • the base station 20 may switch to a wireless communication method suitable for wireless sensing in order to improve the accuracy of wireless sensing.
  • the base station 20 may select a communication method using infrared rays in order to detect the influence of thermal noise.
  • the base station 20 may select a communication method using infrared rays in order to detect the influence of thermal noise.
  • interference between the base stations 20 becomes a problem, so for example, multiple base stations 20 use infrared light in turn, and other base stations 20 use visible light.
  • the heat source may be periodically sensed while avoiding interference between the base stations 20.
  • control device 10, base station 20, or terminal 30 is realized by, for example, the hardware configuration of a computer 500 shown in FIG. 8.
  • the computer 500 shown in FIG. 8 includes an input device 501, a display device 502, an external I/F 503, a communication I/F 504, a processor 505, and a memory device 506. Each of these pieces of hardware is communicably connected via a bus 507.
  • the input device 501 is, for example, a keyboard, a mouse, a touch panel, or the like.
  • the display device 502 is, for example, a display. Note that the computer 500 does not need to have at least one of the input device 501 and the display device 502.
  • the external I/F 503 is an interface with an external device such as a recording medium 503a.
  • a recording medium 503a examples include a CD (Compact Disc), a DVD (Digital Versatile Disk), an SD memory card (Secure Digital memory card), and a USB (Universal Serial Bus) memory card.
  • the communication I/F 504 is an interface for performing data communication with other devices, equipment, systems, etc.
  • the processor 505 is, for example, various arithmetic devices such as a CPU.
  • the memory device 506 is, for example, various storage devices such as an HDD, an SSD, a RAM (Random Access Memory), a ROM (Read Only Memory), and a flash memory.
  • the control device 10, base station 20, or terminal 30 can implement the various processes described above by having the hardware configuration of the computer 500 shown in FIG.
  • the hardware configuration of the computer 500 shown in FIG. 8 is an example, and the computer 500 may have another hardware configuration.
  • computer 500 may have multiple processors 505 and multiple memory devices 506.
  • the control device 10, base station 20, or terminal 30 is realized by reading a program for causing the computer 500 to execute each of the above-described processes, and executing the process specified in the program.
  • the program may be recorded on the recording medium 503a or the like, or may be provided through a network.
  • a wireless communication system comprising a terminal and a base station that transmit and receive signals to each other by optical wireless communication, and a control device that controls the base station,
  • the control device includes: an information acquisition unit that acquires information indicating communication quality from the base station; a shielding detection unit that detects shielding that affects optical wireless communication between the base station and the terminal or other device based on information indicating the communication quality; Wireless communication system.
  • the information acquisition unit further acquires information indicating the position or direction of the terminal
  • the shielding detection unit detects shielding that affects optical wireless communication between the base station and the terminal based on information indicating the communication quality and information indicating the position or direction of the terminal.
  • the wireless communication system according to item 1. (Section 3)
  • the control device includes: further comprising a heat source detection unit that detects a heat source that affects optical wireless communication between the base station and the terminal or other device based on information indicating the communication quality;
  • Wireless communication system 10
  • Control device 11
  • Communication unit 12
  • External input/output unit 13
  • Arithmetic processing unit 14
  • Storage unit 15
  • Information acquisition unit 16
  • Shielding detection unit 17
  • Heat source detection unit 20
  • Base station 21
  • Communication unit 22
  • Optical wireless communication quality estimation unit 23
  • Signal processing Section 24
  • Optical wireless communication section 30
  • Sensor 500 Computer 501
  • Input device 502 Display device 503 External I/F 503a Recording medium

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Abstract

The present invention provides a wireless communication system comprising: a terminal and a base station that transmit and receive signals to and from each other via optical wireless communication; and a control device that controls the base station, wherein the control device comprises: an information acquisition unit that acquires, from the base station, information indicating communication quality; and an obstacle detection unit that detects, on the basis of the information indicating communication quality, an obstacle affecting optical wireless communication between the base station and the terminal or other device.

Description

無線通信システム、制御装置、及び制御方法Wireless communication system, control device, and control method
　本発明は、無線通信システム、制御装置、及び制御方法に関する。 The present invention relates to a wireless communication system, a control device, and a control method.
　無線通信機器を用いて検知される情報を収集および分析する無線センシング方法が、さまざまな用途向けに検討されている。例えば、非特許文献１には、機械学習を利用して物体を検知する無線センシング方法について開示されている。また、非特許文献２には、無線ＬＡＮ電波の変動を解析することによって鳥獣を検知する無線センシング方法について開示されている。 Wireless sensing methods that collect and analyze information detected using wireless communication equipment are being considered for various applications. For example, Non-Patent Document 1 discloses a wireless sensing method for detecting objects using machine learning. Furthermore, Non-Patent Document 2 discloses a wireless sensing method for detecting birds and animals by analyzing fluctuations in wireless LAN radio waves.
　従来、赤外線、カメラ画像等を利用した無線センシングでは、センシングを行うための専用デバイスを設置する必要があり、設備の簡略化を困難にするという問題がある。 Conventionally, wireless sensing using infrared rays, camera images, etc. requires the installation of a dedicated device for sensing, which poses the problem of making it difficult to simplify the equipment.
　開示の技術は、無線センシングのための設備の簡略化を容易にすることを目的とする。 The disclosed technology aims to facilitate the simplification of equipment for wireless sensing.
　開示の技術は、互いに光無線通信によって信号を送受信する端末および基地局と、前記基地局を制御する制御装置と、を備える無線通信システムであって、前記制御装置は、前記基地局から通信品質を示す情報を取得する情報取得部と、前記通信品質を示す情報に基づいて、前記基地局と、前記端末またはその他の装置との間の光無線通信に影響する遮蔽を検知する遮蔽検知部と、を備える無線通信システムである。 The disclosed technology is a wireless communication system including a terminal and a base station that transmit and receive signals to each other by optical wireless communication, and a control device that controls the base station, the control device controlling communication quality from the base station. an information acquisition unit that acquires information indicating the communication quality; and a shielding detection unit that detects shielding that affects optical wireless communication between the base station and the terminal or other device based on the information indicating the communication quality. This is a wireless communication system comprising:
　無線センシングのための設備の簡略化を容易にすることができる。 It is possible to simplify the equipment for wireless sensing.
本発明の実施の形態の実施例１に係る無線通信システムの構成の一例を示す図である。1 is a diagram illustrating an example of a configuration of a wireless communication system according to Example 1 of an embodiment of the present invention. 本発明の実施の形態の実施例１に係る制御装置の機能構成の一例を示す図である。1 is a diagram illustrating an example of a functional configuration of a control device according to Example 1 of an embodiment of the present invention; FIG. 本発明の実施の形態の実施例１に係る基地局の機能構成の一例を示す図である。1 is a diagram illustrating an example of a functional configuration of a base station according to Example 1 of the embodiment of the present invention; FIG. 本発明の実施の形態の実施例１に係る検知処理の流れの一例を示すフローチャートである。It is a flow chart which shows an example of the flow of detection processing concerning Example 1 of an embodiment of the present invention. 本発明の実施の形態の実施例２に係る無線通信システムの構成の一例を示す図である。FIG. 2 is a diagram illustrating an example of the configuration of a wireless communication system according to Example 2 of the embodiment of the present invention. 本発明の実施の形態の実施例２に係る制御装置の機能構成の一例を示す図である。It is a figure showing an example of the functional composition of the control device concerning Example 2 of an embodiment of the present invention. 本発明の実施の形態の実施例２に係る検知処理の流れの一例を示すフローチャートである。12 is a flowchart illustrating an example of the flow of detection processing according to Example 2 of the embodiment of the present invention. コンピュータのハードウェア構成の一例を示す図である。1 is a diagram showing an example of a hardware configuration of a computer.
　以下、図面を参照して本発明の実施の形態（本実施の形態）を説明する。以下で説明する実施の形態は一例に過ぎず、本発明が適用される実施の形態は、以下の実施の形態に限られるわけではない。 Hereinafter, an embodiment of the present invention (this embodiment) will be described with reference to the drawings. The embodiments described below are merely examples, and embodiments to which the present invention is applied are not limited to the following embodiments.
　（本実施の形態の概要）
　本実施の形態では、光無線通信用の無線機器をセンシング用途に使用する例について説明する。 (Summary of this embodiment)
In this embodiment, an example will be described in which a wireless device for optical wireless communication is used for sensing purposes.
　以下、本実施の形態の具体的な実施例として、実施例１および実施例２について説明する。 Hereinafter, Example 1 and Example 2 will be described as specific examples of this embodiment.
　（実施例１）
　本実施例では、可視光方式の光無線通信機器をセンシング用途に使用する例について説明する。 (Example 1)
In this embodiment, an example will be described in which a visible light type optical wireless communication device is used for sensing purposes.
　図１は、本発明の実施の形態の実施例１に係る無線通信システムの構成の一例を示す図である。無線通信システム１は、制御装置１０と基地局２０と端末３０とセンサ４０とを備える。 FIG. 1 is a diagram illustrating an example of the configuration of a wireless communication system according to Example 1 of the embodiment of the present invention. The wireless communication system 1 includes a control device 10, a base station 20, a terminal 30, and a sensor 40.
　制御装置１０は、基地局２０と端末３０、センサ４０等との間における光無線通信を制御する装置である。制御装置１０は、基地局２０と有線または無線の通信線を介して、通信可能に接続されている。制御装置１０は、基地局２０から光無線通信の品質を示す情報を取得して、基地局２０と端末３０、センサ４０等との間における光無線通信に影響する遮蔽の有無を検知する。 The control device 10 is a device that controls optical wireless communication between the base station 20, the terminal 30, the sensor 40, etc. The control device 10 is communicably connected to the base station 20 via a wired or wireless communication line. The control device 10 acquires information indicating the quality of optical wireless communication from the base station 20, and detects the presence or absence of shielding that affects the optical wireless communication between the base station 20, the terminal 30, the sensor 40, and the like.
　基地局２０は、端末３０、センサ４０等との間で可視光方式の光無線通信を行う装置である。基地局２０は、端末３０、センサ４０等との間の光無線通信の品質を推定し、推定結果に基づいて光無線通信の品質を示す情報を制御装置１０に送信する。また、基地局２０は、端末３０の位置、方向等を示す情報を、制御装置１０に送信する。 The base station 20 is a device that performs visible light optical wireless communication with the terminal 30, sensor 40, etc. The base station 20 estimates the quality of optical wireless communication with the terminal 30, sensor 40, etc., and transmits information indicating the quality of optical wireless communication to the control device 10 based on the estimation result. Furthermore, the base station 20 transmits information indicating the position, direction, etc. of the terminal 30 to the control device 10.
　端末３０は、ユーザによって使用され、ユーザとともに移動する移動局として機能する装置である。端末３０と基地局２０との間の通信状態は、端末３０の位置、方向等に応じて変化する。 The terminal 30 is a device that is used by a user and functions as a mobile station that moves with the user. The communication state between the terminal 30 and the base station 20 changes depending on the position, direction, etc. of the terminal 30.
　センサ４０は、固定された場所に設置され、光無線通信を介して、検知した情報を例えば定期的に基地局２０に送信する。 The sensor 40 is installed at a fixed location, and periodically transmits detected information to the base station 20 via optical wireless communication, for example.
　図２は、本発明の実施の形態の実施例１に係る制御装置の機能構成の一例を示す図である。制御装置１０は、通信部１１と、外部入出力部１２と、演算処理部１３と、記憶部１４と、情報取得部１５と、遮蔽検知部１６と、を備える。 FIG. 2 is a diagram illustrating an example of the functional configuration of a control device according to Example 1 of the embodiment of the present invention. The control device 10 includes a communication section 11, an external input/output section 12, an arithmetic processing section 13, a storage section 14, an information acquisition section 15, and a shielding detection section 16.
　通信部１１は、基地局２０との間で情報の送受信を行う。具体的には、通信部１１は、基地局２０から光無線通信の品質を示す情報および端末３０の位置、方向等を示す情報を受信する。また、通信部１１は、遮蔽検知部１６が検知した遮蔽を示す情報を、基地局２０に送信してもよい。 The communication unit 11 transmits and receives information to and from the base station 20. Specifically, the communication unit 11 receives information indicating the quality of optical wireless communication and information indicating the position, direction, etc. of the terminal 30 from the base station 20. Furthermore, the communication unit 11 may transmit information indicating the shielding detected by the shielding detection unit 16 to the base station 20.
　外部入出力部１２は、演算処理部１３が実行する演算に必要なデータを演算処理部１３に入力し、または演算処理部１３が実行した演算の結果のデータを出力する。具体的には、外部入出力部１２は、通信部１１が受信した情報を演算処理部１３に入力する。また、外部入出力部１２は、遮蔽検知部１６が検知した遮蔽を示す情報を出力してもよい。 The external input/output unit 12 inputs data necessary for the calculation performed by the calculation processing unit 13 to the calculation processing unit 13, or outputs data as a result of the calculation performed by the calculation processing unit 13. Specifically, the external input/output unit 12 inputs the information received by the communication unit 11 to the arithmetic processing unit 13. Further, the external input/output unit 12 may output information indicating the shielding detected by the shielding detector 16.
　演算処理部１３は、入力されたデータに基づく演算を行う。具体的には、演算処理部１３は、光無線通信の品質を示す情報および端末３０の位置、方向等を示す情報に基づく演算を行って、遮蔽の有無を判断するための値を算出する。 The calculation processing unit 13 performs calculations based on the input data. Specifically, the calculation processing unit 13 performs calculations based on information indicating the quality of optical wireless communication and information indicating the position, direction, etc. of the terminal 30, and calculates a value for determining the presence or absence of shielding.
　記憶部１４は、演算に必要なデータを記憶する。具体的には、記憶部１４は、光無線通信の品質を示す情報、遮蔽検知部１６が検知した遮蔽を示す情報等を記憶する。 The storage unit 14 stores data necessary for calculation. Specifically, the storage unit 14 stores information indicating the quality of optical wireless communication, information indicating shielding detected by the shielding detection unit 16, and the like.
　情報取得部１５は、通信部１１、外部入出力部１２等を介して、基地局２０から光無線通信の品質を示す情報および端末３０の位置、方向等を示す情報を取得する。 The information acquisition unit 15 acquires information indicating the quality of optical wireless communication and information indicating the position, direction, etc. of the terminal 30 from the base station 20 via the communication unit 11, external input/output unit 12, etc.
　遮蔽検知部１６は、基地局２０と端末３０またはセンサ４０との間における遮蔽を検知する。具体的には、遮蔽検知部１６は、光無線通信の品質を示す情報および端末３０の位置、方向等を示す情報についての演算処理部１３による演算結果に基づいて、遮蔽の有無を判断する。 The shielding detection unit 16 detects shielding between the base station 20 and the terminal 30 or sensor 40. Specifically, the shielding detection unit 16 determines the presence or absence of shielding based on the calculation results by the calculation processing unit 13 regarding information indicating the quality of optical wireless communication and information indicating the position, direction, etc. of the terminal 30.
　例えば、遮蔽検知部１６は、基地局２０とセンサ４０との間の通信については、光無線通信の品質を示す情報に基づいて、光無線通信の品質が低下した場合に、遮蔽が有ると判断してもよい。また、遮蔽検知部１６は、基地局２０と端末３０との間の通信については、光無線通信の品質を示す情報および端末３０の位置、方向等を示す情報に基づいて、端末３０の位置、方向等から推定される品質よりも光無線通信の品質が低下した場合に、遮蔽が有ると判断してもよい。 For example, regarding the communication between the base station 20 and the sensor 40, the shielding detection unit 16 determines that there is shielding when the quality of optical wireless communication has decreased based on information indicating the quality of optical wireless communication. You may. Furthermore, regarding communication between the base station 20 and the terminal 30, the shielding detection unit 16 detects the position of the terminal 30, based on information indicating the quality of optical wireless communication and information indicating the position, direction, etc. of the terminal 30. It may be determined that there is shielding when the quality of optical wireless communication is lower than the quality estimated from the direction or the like.
　図３は、本発明の実施の形態の実施例１に係る基地局の機能構成の一例を示す図である。基地局２０は、通信部２１と、光無線通信品質推定部２２と、信号処理部２３と、光無線通信部２４と、を備える。 FIG. 3 is a diagram illustrating an example of the functional configuration of a base station according to Example 1 of the embodiment of the present invention. The base station 20 includes a communication section 21 , an optical wireless communication quality estimation section 22 , a signal processing section 23 , and an optical wireless communication section 24 .
　通信部２１は、制御装置１０との間で情報の送受信を行う。具体的には、通信部２１は、光無線通信の品質を示す情報および端末３０の位置、方向等を示す情報を制御装置１０に送信する。また、通信部２１は、遮蔽検知部１６が検知した遮蔽を示す情報を、制御装置１０から受信してもよい。 The communication unit 21 transmits and receives information to and from the control device 10. Specifically, the communication unit 21 transmits information indicating the quality of optical wireless communication and information indicating the position, direction, etc. of the terminal 30 to the control device 10. Further, the communication unit 21 may receive information indicating the shielding detected by the shielding detection unit 16 from the control device 10.
　光無線通信品質推定部２２は、端末３０またはセンサ４０との間の光無線通信の品質を推定し、推定された光無線通信の品質を示す情報を、通信部２１を介して制御装置１０に送信する。例えば、光無線通信品質推定部２２は、定期的に送受信されているデータが届かなくなる、パケットエラーが生じる、などのような通信状態の変化に基づいて、通信品質を推定してもよい。 The optical wireless communication quality estimation unit 22 estimates the quality of optical wireless communication with the terminal 30 or the sensor 40 and sends information indicating the estimated quality of optical wireless communication to the control device 10 via the communication unit 21. Send. For example, the optical wireless communication quality estimating unit 22 may estimate the communication quality based on a change in the communication state, such as the failure of regularly transmitted and received data or the occurrence of a packet error.
　信号処理部２３は、端末３０またはセンサ４０との間の光無線通信において送受信する信号を処理する。 The signal processing unit 23 processes signals transmitted and received in optical wireless communication with the terminal 30 or sensor 40.
　光無線通信部２４は、端末３０またはセンサ４０との間で、光無線通信を行う。 The optical wireless communication unit 24 performs optical wireless communication with the terminal 30 or the sensor 40.
　図４は、本発明の実施の形態の実施例１に係る検知処理の流れの一例を示すフローチャートである。制御装置１０は、定期的に、またはユーザの操作に応じて、検知処理を実行する。 FIG. 4 is a flowchart showing an example of the flow of detection processing according to Example 1 of the embodiment of the present invention. The control device 10 executes the detection process periodically or in response to a user's operation.
　情報取得部１５は、基地局２０から通信品質を示す情報を取得する（ステップＳ１０１）。ここで、情報取得部１５は、端末３０の位置、方向等を示す情報を取得してもよい。 The information acquisition unit 15 acquires information indicating communication quality from the base station 20 (step S101). Here, the information acquisition unit 15 may acquire information indicating the position, direction, etc. of the terminal 30.
　遮蔽検知部１６は、通信品質を示す情報に基づいて、遮蔽を検知する（ステップＳ１０２）。具体的には、遮蔽検知部１６は、通信品質が低下した場合には、基地局２０とセンサ４０との間の遮蔽を検知する。また、遮蔽検知部１６は、通信品質を示す情報と端末３０の位置、方向等を示す情報とに基づいて、端末３０と基地局２０との間の遮蔽を検知してもよい。この場合、遮蔽検知部１６は、端末３０の位置、方向等から推定される品質よりも光無線通信の品質が低下した場合に、遮蔽が有ると判断してもよい。 The shielding detection unit 16 detects shielding based on information indicating communication quality (step S102). Specifically, the shielding detection unit 16 detects shielding between the base station 20 and the sensor 40 when the communication quality has deteriorated. Further, the shielding detection unit 16 may detect shielding between the terminal 30 and the base station 20 based on information indicating communication quality and information indicating the position, direction, etc. of the terminal 30. In this case, the shielding detection unit 16 may determine that there is shielding when the quality of optical wireless communication is lower than the quality estimated from the position, direction, etc. of the terminal 30.
　次に、通信部１１は、検知した遮蔽を示す情報を基地局２０に出力する（ステップＳ１０３）。基地局２０は、受信した遮蔽を示す情報に基づいて、光無線通信のスケジューリングを行ってもよい。 Next, the communication unit 11 outputs information indicating the detected shielding to the base station 20 (step S103). The base station 20 may schedule optical wireless communication based on the received information indicating shielding.
　本実施例によれば、制御装置１０は、通信品質を示す情報に基づいて、遮蔽を検知する。これによって、無線センシングのための専用の機器を追加する必要がないため、設備の簡略化を容易にすることができ、設備コストの増大を防ぐことができる。 According to this embodiment, the control device 10 detects shielding based on information indicating communication quality. This eliminates the need to add dedicated equipment for wireless sensing, making it easier to simplify the equipment and prevent increases in equipment costs.
　（実施例２）
　以下に図面を参照して、実施例２について説明する。実施例２は、赤外線方式の光無線通信において熱源を検知する点が、実施例１と相違する。よって、以下の実施例２の説明では、実施例１との相違点を中心に説明し、実施例１と同様の機能構成を有するものには、実施例１の説明で用いた符号と同様の符号を付与し、その説明を省略する。 (Example 2)
Example 2 will be described below with reference to the drawings. The second embodiment differs from the first embodiment in that a heat source is detected in infrared optical wireless communication. Therefore, in the following explanation of the second embodiment, the differences from the first embodiment will be mainly explained, and parts having the same functional configuration as the first embodiment will be designated by the same reference numerals as used in the explanation of the first embodiment. A symbol is given and the explanation thereof is omitted.
　図５は、本発明の実施の形態の実施例２に係る無線通信システムの構成の一例を示す図である。本実施例に係る無線通信システム２は、制御装置１０と基地局２０とセンサ４０とを備える。本実施例に係る基地局２０は、赤外線方式の光無線通信によって、センサ４０と通信する。 FIG. 5 is a diagram illustrating an example of the configuration of a wireless communication system according to Example 2 of the embodiment of the present invention. The wireless communication system 2 according to this embodiment includes a control device 10, a base station 20, and a sensor 40. The base station 20 according to this embodiment communicates with the sensor 40 using infrared optical wireless communication.
　本実施例に係る無線通信システム２は、実施例１に係る遮蔽検知に加えて、ヒト等の熱源が発する赤外線をノイズとして検知することで、熱源の存在を把握する。 In addition to the shielding detection according to the first embodiment, the wireless communication system 2 according to this embodiment detects the presence of a heat source by detecting infrared rays emitted by a heat source such as a person as noise.
　図６は、本発明の実施の形態の実施例２に係る制御装置の機能構成の一例を示す図である。本実施例に係る制御装置１０は、実施例１に係る制御装置１０に熱源検知部１７を追加した構成を有する。 FIG. 6 is a diagram illustrating an example of the functional configuration of a control device according to Example 2 of the embodiment of the present invention. The control device 10 according to the present embodiment has a configuration in which a heat source detection section 17 is added to the control device 10 according to the first embodiment.
　また、本実施例に係る情報取得部１５は、基地局２０から通信品質を示す情報として、例えば、送受信する信号のＳＮ比（signal-to-noise ratio）を示す情報を取得する。 Further, the information acquisition unit 15 according to the present embodiment acquires, for example, information indicating the signal-to-noise ratio of signals to be transmitted and received as information indicating communication quality from the base station 20.
　熱源検知部１７は、通信品質（例えばＳＮ比）を示す情報に基づいて、熱源を検知する。具体的には、熱源検知部１７は、ＳＮ比の低下等によってノイズフロアが増大したと判断すると、熱源が接近したと判断してもよい。 The heat source detection unit 17 detects a heat source based on information indicating communication quality (for example, SN ratio). Specifically, if the heat source detection unit 17 determines that the noise floor has increased due to a decrease in the SN ratio or the like, it may determine that the heat source has approached.
　図７は、本発明の実施の形態の実施例２に係る検知処理の流れの一例を示すフローチャートである。本実施例に係る検知処理では、情報取得部１５は、基地局２０から通信品質を示す情報を取得する（ステップＳ２０１）。ここで、情報取得部１５は、基地局２０が送受信する信号のＳＮ比を示す情報を取得してもよい。 FIG. 7 is a flowchart showing an example of the flow of detection processing according to Example 2 of the embodiment of the present invention. In the detection process according to the present embodiment, the information acquisition unit 15 acquires information indicating communication quality from the base station 20 (step S201). Here, the information acquisition unit 15 may acquire information indicating the SN ratio of signals transmitted and received by the base station 20.
　熱源検知部１７は、通信品質を示す情報に基づいて、熱源を検知する（ステップＳ２０２）。具体的には、熱源検知部１７は、通信品質（例えばＳＮ比）が低下した場合には、基地局２０またはセンサ４０の近傍の熱源を検知する。 The heat source detection unit 17 detects a heat source based on information indicating communication quality (step S202). Specifically, the heat source detection unit 17 detects a heat source near the base station 20 or the sensor 40 when the communication quality (for example, SN ratio) has decreased.
　次に、通信部１１は、検知した熱源を示す情報を基地局２０に出力する（ステップＳ２０３）。基地局２０は、受信した熱源を示す情報に基づいて、光無線通信のスケジューリングを行ってもよい。 Next, the communication unit 11 outputs information indicating the detected heat source to the base station 20 (step S203). The base station 20 may schedule optical wireless communication based on the received information indicating the heat source.
　本実施例によれば、制御装置１０は、通信品質を示す情報に基づいて、熱源を検知する。これによって、熱源を検知するための専用の機器を追加する必要がないため、設備の簡略化を容易にすることができ、設備コストの増大を防ぐことができる。 According to this embodiment, the control device 10 detects a heat source based on information indicating communication quality. This eliminates the need to add a dedicated device for detecting the heat source, making it easier to simplify the equipment and prevent increases in equipment costs.
　上述した各実施例において、光無線通信方式の基地局２０における無線センシングを実現させる方法について説明したが、端末３０における無線センシングを実現してもよい。例えば、制御装置１０は、端末３０から通信品質を示す情報を取得して、当該情報に基づいて、遮蔽または熱源を検知してもよい。 In each of the embodiments described above, a method for realizing wireless sensing at the optical wireless communication base station 20 has been described, but wireless sensing at the terminal 30 may also be realized. For example, the control device 10 may acquire information indicating communication quality from the terminal 30 and detect shielding or a heat source based on the information.
　また、制御装置１０は、光無線通信方式の無線機器に加え、別の無線通信方式を組合せた情報解析を行ってもよい。例えば、制御装置１０は、光無線通信で遮蔽と判定された端末に対し、さらに無線ＬＡＮを使って通信品質を推定し、その遮蔽の度合いを推定してもよい。 Furthermore, the control device 10 may perform information analysis using a combination of other wireless communication methods in addition to wireless devices using optical wireless communication methods. For example, the control device 10 may further estimate the communication quality using wireless LAN for a terminal determined to be shielded by optical wireless communication, and estimate the degree of shielding.
　また、上述した各実施例では、１組の光無線通信方式の基地局２０と端末３０との間での無線センシングについて説明したが、基地局２０と複数の端末３０との間の無線センシングでもよく、複数の基地局２０から収集した情報を制御装置１０が統合的に解析してもよい。例えば、ある基地局２０と端末３０との間の通信ペアだけでなく、基地局２０に隣接する基地局２０と端末３０との間の通信品質を示す情報がさらに取得し、基地局２０ごとの遮蔽の大小について推定を行ってもよい。 Further, in each of the above-described embodiments, wireless sensing between a pair of base station 20 and a terminal 30 using an optical wireless communication system has been described, but wireless sensing between a base station 20 and a plurality of terminals 30 may also be performed. Often, the control device 10 may integrally analyze information collected from a plurality of base stations 20. For example, information indicating the communication quality not only between a certain base station 20 and a terminal 30 but also between a base station 20 and a terminal 30 adjacent to the base station 20 is acquired, and The magnitude of the shielding may be estimated.
　また、上述した各実施例では、単一の無線通信方式を想定して説明したが、基地局２０が無線通信方式を切り替えたり、必要に応じて併用したりする機能を有していてもよい。その場合、基地局２０は、無線センシングの精度を高めるため、無線センシングに適した無線通信方式への切り替えを行っても良い。例えば、基地局２０は、複数の周波数帯域が選択できる場合、熱雑音の影響を検知するため、赤外線を用いた通信方式を選択してもよい。ただし、複数の基地局２０が同じ周波数帯を利用すると基地局２０間の干渉が課題となるため、例えば複数の基地局２０の間で順番に赤外線を利用し、その他の基地局２０は可視光を利用することで、基地局２０間の干渉を避けつつ、定期的に熱源のセンシングを行ってもよい。 Further, in each of the above-mentioned embodiments, a single wireless communication method is assumed, but the base station 20 may have a function of switching wireless communication methods or using them in combination as necessary. . In that case, the base station 20 may switch to a wireless communication method suitable for wireless sensing in order to improve the accuracy of wireless sensing. For example, when a plurality of frequency bands can be selected, the base station 20 may select a communication method using infrared rays in order to detect the influence of thermal noise. However, if multiple base stations 20 use the same frequency band, interference between the base stations 20 becomes a problem, so for example, multiple base stations 20 use infrared light in turn, and other base stations 20 use visible light. By using this, the heat source may be periodically sensed while avoiding interference between the base stations 20.
　＜ハードウェア構成＞
　最後に、本実施形態に係る制御装置１０、基地局２０または端末３０のハードウェア構成について説明する。本実施形態に係る制御装置１０、基地局２０または端末３０は、例えば、図８に示すコンピュータ５００のハードウェア構成により実現される。 <Hardware configuration>
Finally, the hardware configuration of the control device 10, base station 20, or terminal 30 according to this embodiment will be explained. The control device 10, base station 20, or terminal 30 according to this embodiment is realized by, for example, the hardware configuration of a computer 500 shown in FIG. 8.
　図８に示すコンピュータ５００は、入力装置５０１と、表示装置５０２と、外部Ｉ／Ｆ５０３と、通信Ｉ／Ｆ５０４と、プロセッサ５０５と、メモリ装置５０６とを有する。これらの各ハードウェアは、それぞれがバス５０７により通信可能に接続される。 The computer 500 shown in FIG. 8 includes an input device 501, a display device 502, an external I/F 503, a communication I/F 504, a processor 505, and a memory device 506. Each of these pieces of hardware is communicably connected via a bus 507.
　入力装置５０１は、例えば、キーボードやマウス、タッチパネル等である。表示装置５０２は、例えば、ディスプレイ等である。なお、コンピュータ５００は、入力装置５０１及び表示装置５０２のうちの少なくとも一方を有していなくてもよい。 The input device 501 is, for example, a keyboard, a mouse, a touch panel, or the like. The display device 502 is, for example, a display. Note that the computer 500 does not need to have at least one of the input device 501 and the display device 502.
　外部Ｉ／Ｆ５０３は、記録媒体５０３ａ等の外部装置とのインタフェースである。なお、記録媒体５０３ａとしては、例えば、ＣＤ（Compact Disc）、ＤＶＤ（Digital Versatile Disk）、ＳＤメモリカード（Secure Digital memory card）、ＵＳＢ（Universal Serial Bus）メモリカード等が挙げられる。 The external I/F 503 is an interface with an external device such as a recording medium 503a. Note that examples of the recording medium 503a include a CD (Compact Disc), a DVD (Digital Versatile Disk), an SD memory card (Secure Digital memory card), and a USB (Universal Serial Bus) memory card.
　通信Ｉ／Ｆ５０４は、他の装置や機器、システム等との間でデータ通信を行うためのインタフェースである。プロセッサ５０５は、例えば、ＣＰＵ等の各種演算装置である。メモリ装置５０６は、例えば、ＨＤＤやＳＳＤ、ＲＡＭ（Random Access Memory）、ＲＯＭ（Read Only Memory）、フラッシュメモリ等の各種記憶装置である。 The communication I/F 504 is an interface for performing data communication with other devices, equipment, systems, etc. The processor 505 is, for example, various arithmetic devices such as a CPU. The memory device 506 is, for example, various storage devices such as an HDD, an SSD, a RAM (Random Access Memory), a ROM (Read Only Memory), and a flash memory.
　本実施形態に係る制御装置１０、基地局２０または端末３０は、図８に示すコンピュータ５００のハードウェア構成を有することにより、上述した各種処理を実現することができる。なお、図８に示すコンピュータ５００のハードウェア構成は一例であって、コンピュータ５００は、他のハードウェア構成を有していてもよい。例えば、コンピュータ５００は、複数のプロセッサ５０５を有していてもよいし、複数のメモリ装置５０６を有していてもよい。 The control device 10, base station 20, or terminal 30 according to this embodiment can implement the various processes described above by having the hardware configuration of the computer 500 shown in FIG. Note that the hardware configuration of the computer 500 shown in FIG. 8 is an example, and the computer 500 may have another hardware configuration. For example, computer 500 may have multiple processors 505 and multiple memory devices 506.
　本実施形態に係る制御装置１０、基地局２０または端末３０は、上述した各処理をコンピュータ５００に実行させるためのプログラムを読み出して、当該プログラムに規定される処理を実行することによって実現される。当該プログラムは、記録媒体５０３ａ等に記録されていてもよいし、ネットワークを通して提供されていてもよい。 The control device 10, base station 20, or terminal 30 according to the present embodiment is realized by reading a program for causing the computer 500 to execute each of the above-described processes, and executing the process specified in the program. The program may be recorded on the recording medium 503a or the like, or may be provided through a network.
　（実施の形態のまとめ）
　本明細書には、少なくとも下記の各項に記載した無線通信システム、制御装置、及び制御方法が記載されている。
（第１項）
　互いに光無線通信によって信号を送受信する端末および基地局と、前記基地局を制御する制御装置と、を備える無線通信システムであって、
　前記制御装置は、
　前記基地局から通信品質を示す情報を取得する情報取得部と、
　前記通信品質を示す情報に基づいて、前記基地局と、前記端末またはその他の装置との間の光無線通信に影響する遮蔽を検知する遮蔽検知部と、を備える、
　無線通信システム。
（第２項）
　前記情報取得部は、前記端末の位置または方向を示す情報をさらに取得し、
　前記遮蔽検知部は、前記通信品質を示す情報と、前記端末の位置または方向を示す情報と、に基づいて、前記基地局と前記端末との間の光無線通信に影響する遮蔽を検知する、
　第１項に記載の無線通信システム。
（第３項）
　前記制御装置は、
　前記通信品質を示す情報に基づいて、前記基地局と、前記端末またはその他の装置との間の光無線通信に影響する熱源を検知する熱源検知部をさらに備える、
　第２項に記載の無線通信システム。
（第４項）
　光無線通信によって端末との間で信号を送受信する基地局を制御するための制御装置であって、
　前記基地局から通信品質を示す情報を取得する情報取得部と、
　前記通信品質を示す情報に基づいて、前記基地局と、前記端末またはその他の装置との間の光無線通信に影響する遮蔽を検知する遮蔽検知部と、を備える、
　制御装置。
（第５項）
　光無線通信によって端末との間で信号を送受信する基地局を制御するための制御装置が実行する制御方法であって、
　前記基地局から通信品質を示す情報を取得するステップと、
　前記通信品質を示す情報に基づいて、前記基地局と、前記端末またはその他の装置との間の光無線通信に影響する遮蔽を検知するステップと、を備える、
　制御方法。 (Summary of embodiments)
This specification describes at least the wireless communication system, control device, and control method described in the following sections.
(Section 1)
A wireless communication system comprising a terminal and a base station that transmit and receive signals to each other by optical wireless communication, and a control device that controls the base station,
The control device includes:
an information acquisition unit that acquires information indicating communication quality from the base station;
a shielding detection unit that detects shielding that affects optical wireless communication between the base station and the terminal or other device based on information indicating the communication quality;
Wireless communication system.
(Section 2)
The information acquisition unit further acquires information indicating the position or direction of the terminal,
The shielding detection unit detects shielding that affects optical wireless communication between the base station and the terminal based on information indicating the communication quality and information indicating the position or direction of the terminal.
The wireless communication system according to item 1.
(Section 3)
The control device includes:
further comprising a heat source detection unit that detects a heat source that affects optical wireless communication between the base station and the terminal or other device based on information indicating the communication quality;
The wireless communication system according to item 2.
(Section 4)
A control device for controlling a base station that transmits and receives signals to and from a terminal by optical wireless communication,
an information acquisition unit that acquires information indicating communication quality from the base station;
a shielding detection unit that detects shielding that affects optical wireless communication between the base station and the terminal or other device based on information indicating the communication quality;
Control device.
(Section 5)
A control method executed by a control device for controlling a base station that transmits and receives signals to and from a terminal by optical wireless communication, the method comprising:
acquiring information indicating communication quality from the base station;
detecting occlusion that affects optical wireless communication between the base station and the terminal or other device based on information indicating the communication quality;
Control method.
　以上、本実施の形態について説明したが、本発明はかかる特定の実施形態に限定されるものではなく、請求の範囲に記載された本発明の要旨の範囲内において、種々の変形・変更が可能である。 Although the present embodiment has been described above, the present invention is not limited to such specific embodiment, and various modifications and changes can be made within the scope of the gist of the present invention as described in the claims. It is.
　１　無線通信システム
　１０　制御装置
　１１　通信部
　１２　外部入出力部
　１３　演算処理部
　１４　記憶部
　１５　情報取得部
　１６　遮蔽検知部
　１７　熱源検知部
　２０　基地局
　２１　通信部
　２２　光無線通信品質推定部
　２３　信号処理部
　２４　光無線通信部
　３０　端末
　４０　センサ
　５００　　コンピュータ
　５０１　　入力装置
　５０２　　表示装置
　５０３　　外部Ｉ／Ｆ
　５０３ａ　記録媒体
　５０４　　通信Ｉ／Ｆ
　５０５　　プロセッサ
　５０６　　メモリ装置
　５０７　　バス 1 Wireless communication system 10 Control device 11 Communication unit 12 External input/output unit 13 Arithmetic processing unit 14 Storage unit 15 Information acquisition unit 16 Shielding detection unit 17 Heat source detection unit 20 Base station 21 Communication unit 22 Optical wireless communication quality estimation unit 23 Signal processing Section 24 Optical wireless communication section 30 Terminal 40 Sensor 500 Computer 501 Input device 502 Display device 503 External I/F
503a Recording medium 504 Communication I/F
505 processor 506 memory device 507 bus

Claims (5)

  1. 　互いに光無線通信によって信号を送受信する端末および基地局と、前記基地局を制御する制御装置と、を備える無線通信システムであって、
    　前記制御装置は、
    　前記基地局から通信品質を示す情報を取得する情報取得部と、
    　前記通信品質を示す情報に基づいて、前記基地局と、前記端末またはその他の装置との間の光無線通信に影響する遮蔽を検知する遮蔽検知部と、を備える、
    　無線通信システム。     A wireless communication system comprising a terminal and a base station that transmit and receive signals to each other by optical wireless communication, and a control device that controls the base station,
    The control device includes:
    an information acquisition unit that acquires information indicating communication quality from the base station;
    a shielding detection unit that detects shielding that affects optical wireless communication between the base station and the terminal or other device based on information indicating the communication quality;
    Wireless communication system.
  2. 　前記情報取得部は、前記端末の位置または方向を示す情報をさらに取得し、
    　前記遮蔽検知部は、前記通信品質を示す情報と、前記端末の位置または方向を示す情報と、に基づいて、前記基地局と前記端末との間の光無線通信に影響する遮蔽を検知する、
    　請求項１に記載の無線通信システム。     The information acquisition unit further acquires information indicating the position or direction of the terminal,
    The shielding detection unit detects shielding that affects optical wireless communication between the base station and the terminal based on information indicating the communication quality and information indicating the position or direction of the terminal.
    The wireless communication system according to claim 1.
  3. 　前記制御装置は、
    　前記通信品質を示す情報に基づいて、前記基地局と、前記端末またはその他の装置との間の光無線通信に影響する熱源を検知する熱源検知部をさらに備える、
    　請求項２に記載の無線通信システム。     The control device includes:
    further comprising a heat source detection unit that detects a heat source that affects optical wireless communication between the base station and the terminal or other device based on information indicating the communication quality;
    The wireless communication system according to claim 2.
  4. 　光無線通信によって端末との間で信号を送受信する基地局を制御するための制御装置であって、
    　前記基地局から通信品質を示す情報を取得する情報取得部と、
    　前記通信品質を示す情報に基づいて、前記基地局と、前記端末またはその他の装置との間の光無線通信に影響する遮蔽を検知する遮蔽検知部と、を備える、
    　制御装置。     A control device for controlling a base station that transmits and receives signals to and from a terminal by optical wireless communication,
    an information acquisition unit that acquires information indicating communication quality from the base station;
    a shielding detection unit that detects shielding that affects optical wireless communication between the base station and the terminal or other device based on information indicating the communication quality;
    Control device.
  5. 　光無線通信によって端末との間で信号を送受信する基地局を制御するための制御装置が実行する制御方法であって、
    　前記基地局から通信品質を示す情報を取得するステップと、
    　前記通信品質を示す情報に基づいて、前記基地局と、前記端末またはその他の装置との間の光無線通信に影響する遮蔽を検知するステップと、を備える、
    　制御方法。     A control method executed by a control device for controlling a base station that transmits and receives signals to and from a terminal by optical wireless communication, the method comprising:
    acquiring information indicating communication quality from the base station;
    detecting occlusion that affects optical wireless communication between the base station and the terminal or other device based on information indicating the communication quality;
    Control method.
PCT/JP2022/027287 2022-07-11 2022-07-11 Wireless communication system, control device, and control method WO2024013813A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000224189A (en) * 1999-02-02 2000-08-11 Hittsu Kenkyusho:Kk Optical transmission system
WO2021002023A1 (en) * 2019-07-04 2021-01-07 日本電信電話株式会社 Communication system, terminal, communication method, and program
JP2022057511A (en) * 2020-09-30 2022-04-11 パナソニック株式会社 Wireless environment estimation system, wireless environment estimation method, terminal device, wireless environment deterioration factor suggestion system, wireless environment deterioration factor suggestion method, and base station

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000224189A (en) * 1999-02-02 2000-08-11 Hittsu Kenkyusho:Kk Optical transmission system
WO2021002023A1 (en) * 2019-07-04 2021-01-07 日本電信電話株式会社 Communication system, terminal, communication method, and program
JP2022057511A (en) * 2020-09-30 2022-04-11 パナソニック株式会社 Wireless environment estimation system, wireless environment estimation method, terminal device, wireless environment deterioration factor suggestion system, wireless environment deterioration factor suggestion method, and base station

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