WO2022003964A1 - Système de collecte de données, terminal, procédé de collecte de données et programme - Google Patents

Système de collecte de données, terminal, procédé de collecte de données et programme Download PDF

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Publication number
WO2022003964A1
WO2022003964A1 PCT/JP2020/026240 JP2020026240W WO2022003964A1 WO 2022003964 A1 WO2022003964 A1 WO 2022003964A1 JP 2020026240 W JP2020026240 W JP 2020026240W WO 2022003964 A1 WO2022003964 A1 WO 2022003964A1
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Prior art keywords
data collection
terminal
metadata
data
wireless communication
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PCT/JP2020/026240
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English (en)
Japanese (ja)
Inventor
真也 玉置
友宏 谷口
徹也 鈴木
康隆 木村
掣 黄
智也 秦野
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日本電信電話株式会社
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Priority to PCT/JP2020/026240 priority Critical patent/WO2022003964A1/fr
Priority to JP2022533004A priority patent/JP7494909B2/ja
Publication of WO2022003964A1 publication Critical patent/WO2022003964A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • 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
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]

Definitions

  • This disclosure relates to sensing data collection in IoT (Internet of Things).
  • Non-Patent Document 1 reports a method using LLDP (Link Layer Discovery Protocol).
  • Non-Patent Document 2 Non-Patent Document 2
  • Yoshiyuki Mihara Takeshi Yamazaki, Manabu Okamoto, Atsushi Sato, "Design of Home Network Map Specific Protocol HTIP and Application to Diagnostic Tools", IPSJ Journal Consumer Devices & Systems, Vol. 2, No. 3, pp. 34-45, Dec. 2012.
  • Toshihiko Oda, Hiroshi Imai Taketsugu Naito, Ichi Takebayashi, "One Method of Definition, Generation, and Utilization of Metadata in the Sensing Data Distribution Market", 2018 National Conference of the Japanese Society for Artificial Intelligence (32nd), June 2012.
  • Non-Patent Document 1 metadata (device information) such as the manufacturer name and model number related to sensing data should be collected with an economical system configuration while utilizing a standard protocol. Is required (Problem 1).
  • the metadata includes not only the device information such as the product name / model number but also the installation conditions such as the installation position / installer of the sensor device and the sensor observes. It is desirable to include things related to the subject. As a method of collecting metadata other than these device information, it is conceivable to develop / build a dedicated system and collect it, or to collect it manually and associate it with separately collected sensing data. There are some difficulties (Problem 2). (1) Development / construction of multiple systems and manual collection and operation will increase costs and complicate operations. (2) An error (for example, a human error) occurs when associating the individually acquired sensing data with the metadata.
  • an error for example, a human error
  • the present invention is a data collection system, a terminal, and a data collection that can collect various metadata by wireless communication and can associate the sensing data with the metadata without error.
  • the purpose is to provide methods and programs.
  • the data collection system is standardized and stores metadata in an extended area in a control system frame defined by a widely used wireless communication protocol. And said.
  • the data collection system is a data collection system that performs communication from a terminal to a data collection unit using a standardized wireless communication protocol.
  • the terminal stores metadata other than the sensing data detected by the sensor device in an extended area in the control system frame defined by the wireless communication protocol.
  • the data collecting unit is characterized in that the metadata is collected for each terminal based on the information for identifying the terminal described in the control system frame.
  • the terminal according to the present invention is a terminal that performs communication to the data collection unit using a standardized wireless communication protocol.
  • the terminal has a storage processing unit that stores metadata other than the sensing data detected by the sensor device in an extended area in the control system frame defined by the wireless communication protocol.
  • a wireless communication protocol operating unit that transmits the control system frame to the data acquisition unit, and It is characterized by having.
  • the data collection method is a data collection method in which communication from a terminal to a data collection unit is performed by a standardized wireless communication protocol.
  • the terminal stores metadata other than the sensing data detected by the sensor device in an extended area in the control system frame defined by the wireless communication protocol, and the data collection unit describes the metadata in the control system frame. It is characterized in that the metadata is collected for each terminal based on the information for identifying the terminal.
  • This data collection system uses, for example, Wi-Fi as a standardized and widely used wireless communication protocol.
  • This data collection system collects device information (metadata) such as the product name / model number of the sensor terminal by utilizing the unique expansion area of the Wi-Fi control system frame (management frame and control frame). Therefore, this data collection system can solve the problem 1.
  • this data collection system can collect various metadata at once by storing information such as the installation position / installer of the sensor device in the original expansion area in addition to the above device information. Therefore, this data collection system can solve the problem 2.
  • this data collection system utilizes the standardized and widely used wireless communication protocol to collect metadata other than device information in addition to device information such as the product name / model number of the sensor terminal. Can be collected in bulk. For this reason, this data collection system avoids the problems of cost improvement, complicated operation, and error in associating sensing data with metadata, and is economical and highly reliable wireless. An IoT system by communication can be realized.
  • the present invention can provide a data collection system, a terminal, and a data collection method that can collect various types of metadata by wireless communication and can associate the sensing data with the metadata without error. ..
  • the terminal divides the metadata so as to fit in the extended area and stores it in a plurality of control system frames.
  • the terminal may use the record of accumulating information other than the sensing data for a certain period of time, or the result of performing a specific calculation as the metadata.
  • the terminal may voluntarily change the transmission cycle of the control system frame or by an instruction from the data collecting unit.
  • the metadata collection of the data collection system according to the present invention is performed via any one of the plurality of data collection units, or via another terminal. It is characterized by.
  • the program according to the present invention is a program for operating a computer as the terminal.
  • the terminal of the present invention can also be realized by a computer and a program, and the program can be recorded on a recording medium or provided through a network.
  • the present invention provides a data collection system, terminal, data collection method, and program capable of collecting sensing data and various types of metadata with a single communication protocol and associating the sensing data with the metadata without error. Can be provided.
  • FIG. 1 is a diagram illustrating the data collection system 301 of the present embodiment.
  • the data collection system 301 is a data collection system that performs communication from the terminal 11 to the data collection unit 12 using a standardized wireless communication protocol.
  • the terminal 11 stores metadata other than the sensing data detected by the sensor device in the extended area in the control system frame defined by the wireless communication protocol.
  • the data collection unit 12 is characterized in that the metadata is collected for each terminal 11 based on the information for identifying the terminal 11 described in the control system frame.
  • the data collection network 15 is a network that connects the sensor terminal 11 existing in a specific range and the data collection unit 12.
  • the data acquisition network 15 is, for example, a local area network (LAN), a field area network (FAN), an IoT area network, or the like.
  • the sensor terminal 11 senses the observation target and generates sensing data.
  • the sensor terminal 11 uses a lightweight and standardized wireless communication protocol such as Wi-Fi (IEEE802.11), and various types of sensing data, device information such as product name / model number, and network configuration information.
  • Wi-Fi IEEE802.11
  • device information such as product name / model number
  • network configuration information such as network configuration information.
  • the data collection unit 12 is, for example, an IoT gateway, an access point, and various other accommodation devices.
  • the data collection unit 12 uses the collected sensing data and metadata as information in a state associated with the sensor terminal 11 and passes it to the data analysis unit 13. The details of the data collection unit 12 will also be described later.
  • the data analysis unit 13 stores the information passed from the data collection unit 12 and uses it for analysis.
  • the data analysis unit 13 may be in the same device as the data collection unit 12 or in a different device. If it is in another device, it may be located away from the data collection unit 12 via the network.
  • FIG. 2 is a diagram illustrating the sensor terminal 11.
  • the sensor terminal 11 includes a sensor device 11a, a device information storage processing unit 11b, a sensing data storage processing unit 11c, a protocol operation unit 11d, a detection unit 11e, and a metadata storage processing unit 11f.
  • the sensor device 11a performs sensing regarding the observation target.
  • the sensing data storage processing unit 11c stores the sensing data from the sensor device 11a at a predetermined position of the data frame (such as the payload portion defined by the wireless communication protocol).
  • the device information storage processing unit 11b collects device information to be observed (for example, device manufacturer name, model name, model number, etc.), and sets a predetermined position of a control system frame (an "extended area" defined by a wireless communication protocol). The information is stored in an area that can be used for unique purposes such as an "option area”). If the wireless communication protocol is Wi-Fi (IEEE802.11), the control frame is a management frame and a control frame other than the data frame.
  • Wi-Fi IEEE802.11
  • the control frame is a management frame and a control frame other than the data frame.
  • Beacon frame (frame that notifies network information), Probe Request frame (frame that requests network information), Probe Response frame (response to Probe Request), Association Request frame (frame requesting connection), Associate Response frame (response to Associate Request), Dissociation frame (frame that disconnects communication), Authentication frame (frame that authenticates the other party), De-Autitionation frame (frame to disconnect (discontinue authentication)), Action frame (frame for all additional functions), Is included.
  • RTS frame (frame to confirm whether data can be transmitted from now on), CTS frame (frame for data transmission from now on), Ack frame (confirmation frame that data was received normally), Block Ac Ac Request frame (frame requesting a confirmation frame (Block Ac)), Block Ac frame (a collection of confirmation frames for multiple MAC frames), Is included.
  • the detection unit 11e acquires information (metadata) other than device information.
  • the information other than the device information is the position information of the detection target, the installer information, and the environmental information.
  • the detection unit 11e has a position information detection unit 11e 1 , an installer detection unit 11e 2 , and an environment information detection unit 11e 3 in order to acquire such information.
  • the position information detection unit 11e 1 is, for example, a GPS, an acceleration sensor, a gyro sensor, or an RSSI receiver such as a Wi-Fi signal or a BLE beacon signal.
  • the installer detection unit 11e 2 is, for example, a fingerprint sensor, a vein sensor, a camera (face / iris recognition), or a microphone (voice print detection) when identifying the installer, and is installed when checking the status of the installer. It is a receiver that receives the output values (blood pressure, heartbeat, movement speed, speech, conversation, etc.) of the sensor worn by the person.
  • the environment information detection unit 11e 3 is, for example, a camera (video information) or an environment sensor for temperature, humidity, illuminance, atmospheric pressure, sound, infrared rays / ultraviolet rays, and the like. The detection unit 11e may detect all of the plurality of detection targets, or may detect any one of them.
  • the metadata storage processing unit 11f stores the data detected by the detection unit 11e as metadata in the extended area or option area in the control system frame set by the wireless communication protocol. ..
  • the metadata stored in the metadata storage processing unit 11f and the device information stored in the device information storage processing unit 11b may be stored in different control system frames, or the same control system may be combined with the metadata and the device information. It may be stored in a frame.
  • both the metadata stored in the metadata storage processing unit 11f and the device information stored in the device information storage processing unit 11b may be collectively referred to as "metadata".
  • the metadata storage processing unit 11f and the device information storage processing unit 11b convert the metadata into a certain abbreviated code and store or divide the metadata so as to conform to the format / restriction of the original extension area of the control system frame. It may be stored in the control system frame after processing, such as storing (fragmentation) separately in a plurality of control system frames.
  • the metadata storage processing unit 11f can arbitrarily set the storage timing for storing the metadata in the control system frame. For example, the storage timing may be set each time the metadata is updated, or the metadata may be stored at the timing of accumulating for a certain period of time instead of sequentially storing the metadata. Further, when the metadata storage processing unit 11f stores the metadata for a certain period of time, the recording (log) or the result of specific calculation / statistical processing may be stored in the control system frame.
  • the type and storage timing of the metadata stored in the frame may be fixed or variable.
  • the type and storage timing of the metadata may be dynamically changed according to the judgment of the sensor terminal 11 itself and the instruction from the data analysis unit 13 or the data collection unit 12.
  • the metadata storage processing unit 11f and the device information storage processing unit 11b encrypt the metadata using an instruction from the data analysis unit 13 or the collection unit 12 or an encryption key preset on the terminal 11 side to encrypt the control system frame. May be stored in.
  • FIG. 3 is a diagram illustrating the data collection unit 12.
  • the data collection unit 12 includes a wireless communication protocol operation unit 12a, a collection data processing unit 12b, and a data batch transmission unit 12c.
  • the protocol operation unit 12a receives a data frame from the sensor terminal 11 and a control system frame in which the metadata is stored in the original extension area.
  • the collected data processing unit 12b takes out metadata from the received control system frame and sensing data from the data frame, and organizes these in a database based on the information (eg, MAC address) that identifies the individual of the sensor terminal 11.
  • the data batch transmission unit 12c stores the data organized in the database in the payload portion of the frame at a predetermined timing, and transmits the frame to the data analysis unit 13.
  • the data batch transmission unit 12c may transmit only a part of the data in the database or may transmit all the data according to the requirements of the data analysis unit 13.
  • FIG. 4 is an example of explaining an area for storing metadata in the control system frame of the 802.11 wireless LAN.
  • FIG. 4A is an example when the control system frame is a probe request frame.
  • the metadata is stored in the "Vendor Specific" area EXP.
  • FIG. 4B is an example when the control system frame is a probe response frame.
  • the metadata is stored in the "Vendor Specific" area EXP.
  • the source of FIG. 4 is as follows. IEEE Std 802.11-2016, p. 708-712 IEEE Standard for Information Technology. Local and Metropolitan Area Network. Specific Requirements, Part 11: Wireless LAN MAC and PHY Specifications,
  • FIG. 5 is a diagram illustrating the data collection system 302 of the present embodiment.
  • the data collection system 302 differs from the data collection system 301 of FIG. 1 in that the metadata is collected via any of a plurality of data collection units (12a, 12b). In this embodiment, the differences from the data collection system 301 of the first embodiment will be described.
  • the data collection system 302 includes a data collection network 15a and a data collection network 15b.
  • the data collection unit 12a and the data collection unit 12b are in charge of each data collection network.
  • the terminal 11 in the data collection network 15a transfers the data frame to the data collection unit 12a to which the connection is established by wireless communication Rm.
  • the control system frame is broadcast unlike the data frame. That is, the control system frame from the terminal 11 in the data acquisition network 15a is also transferred to the data acquisition unit 12b by the broadcast wireless communication Rs.
  • the data collection system 302 is different from the data collection unit 12a in which the connection is established and the main signal (data frame) is directly exchanged, and the data collection unit 12b (another Wi-Fi access point, another IoT-GW) is different. Etc.), and metadata can be collected.
  • the data collection system 302 has the following merits over the data collection system 301 of FIG. (1) Even if one access point (data collection unit 12a) fails, metadata can be received via the other access point (data collection unit 12b). (2) Since a plurality of access points (data collection units) can receive metadata from the same terminal 11, it is possible to grasp that the corresponding terminal 11 exists within the coverage of both access points.
  • FIG. 6 is a diagram illustrating the data collection system 303 of the present embodiment.
  • the data collection system 303 is different from the data collection system 301 of FIG. 1 in that the metadata is collected via another terminal. In this embodiment, the differences from the data collection system 301 of the first embodiment will be described.
  • the terminal 11 of the data collection system 303 further includes a wireless communication device 11g in the configuration of the terminal 11 described with reference to FIG.
  • the wireless communication device 11g can wirelessly communicate with the terminal 11N outside the data collection network 15, and the terminal 11 can receive other metadata acquired by the terminal 11N.
  • the wireless communication is, for example, infrared communication or Bluetooth.
  • the terminal 11 is the metadata including the other metadata received from the other terminal 11N. That is, the metadata storage processing unit 11f also stores the other metadata from the other terminal 11N in the original extension area of the control system frame. Therefore, the data collecting unit 12 can collect the metadata of the other terminal 11N via the terminal 11.
  • FIG. 7 is a flowchart illustrating a data collection method performed by the data collection systems (301 to 303) described in the first to third embodiments.
  • This data collection method is a data collection method in which communication from the terminal 11 to the data collection unit 12 is performed by a standardized wireless communication protocol.
  • the terminal 11 stores the metadata other than the sensing data detected by the sensor device 11a in the extended area in the control system frame defined by the wireless communication protocol (step S01), and the data collection unit 12 describes the metadata.
  • step S02 Collecting the metadata for each terminal 11 based on the information for identifying the terminal 11 described in the control system frame. It is characterized by.
  • this data collection method in the sensor terminal device of the IoT system, various metadata (installation position and installer of the sensor device, etc.) are used together with the device information of the own device for the original expansion area of the Wi-Fi control system frame. Information) is stored.
  • This data collection method can collectively collect other metadata in addition to the device information of the sensor terminal by utilizing the standardized wireless communication protocol.
  • the terminal 11 can also be realized by a computer and a program, and the program can be recorded on a recording medium or provided through a network.
  • FIG. 11 shows a block diagram of the system 100.
  • the system 100 includes a computer 105 connected to the network 135.
  • Network 135 is a data communication network.
  • the network 135 may be a private network or a public network, for example, (a) a personal area network covering a room, (b) a local area network covering, for example, a building, (c), for example.
  • a campus area network that covers a campus (d) a metropolitan area network that covers, for example, a city, (e) a wide area that covers areas that connect, for example, across urban, local, or national boundaries. It can include any or all of the area network, or (f) the Internet. Communication is carried out by electronic signals and optical signals via the network 135.
  • the computer 105 includes a processor 110 and a memory 115 connected to the processor 110.
  • the computer 105 is represented herein as a stand-alone device, but is not so limited, but rather may be connected to other devices not shown in the distributed processing system.
  • the processor 110 is an electronic device composed of a logic circuit that responds to an instruction and executes an instruction.
  • the memory 115 is a readable storage medium for a tangible computer in which a computer program is encoded.
  • the memory 115 stores data and instructions readable and executable by the processor 110, i.e., program code, to control the operation of the processor 110.
  • the memory 115 can be realized by a random access memory (RAM), a hard drive, a read-only memory (ROM), or a combination thereof.
  • One of the components of the memory 115 is the program module 120.
  • the program module 120 includes instructions for controlling the processor 110 to execute the processes described herein. Although the operations are described herein as being performed by a computer 105 or a method or process or a subordinate process thereof, those operations are actually performed by the processor 110.
  • module is used herein to refer to a functional operation that can be embodied as either a stand-alone component or an integrated configuration consisting of multiple subordinate components. Therefore, the program module 120 can be realized as a single module or as a plurality of modules operating in cooperation with each other. Further, the program module 120 is described herein as being installed in memory 115 and thus implemented in software, but of hardware (eg, electronic circuits), firmware, software, or a combination thereof. It can be realized by either.
  • the storage device 140 is a readable storage medium for a tangible computer that stores the program module 120. Examples of storage devices 140 include compact disks, magnetic tapes, read-only memories, optical storage media, memory units consisting of hard drives or multiple parallel hard drives, and universal serial bus (USB) flash drives. Be done. Alternatively, the storage device 140 may be a random access memory or other type of electronic storage device located in a remote storage system (not shown) and connected to the computer 105 via the network 135.
  • the system 100 is collectively referred to herein as the data source 150, and further includes a data source 150A and a data source 150B that are communicably connected to the network 135.
  • the data source 150 can include any number of data sources, i.e. one or more data sources.
  • the data source 150 contains unsystematic data and can include social media.
  • the system 100 further includes a user device 130 operated by the user 101 and connected to the computer 105 via the network 135.
  • User devices 130 include input devices such as keyboards or voice recognition subsystems that allow the user 101 to convey information and command selections to the processor 110.
  • the user device 130 further includes an output device such as a display device or a printer or a speech synthesizer.
  • a cursor control unit such as a mouse, trackball, or touch-sensitive screen, allows the user 101 to manipulate the cursor on the display device to convey further information and command selections to the processor 110.
  • the processor 110 outputs the execution result 122 of the program module 120 to the user device 130.
  • the processor 110 can bring the output to a storage device 125, such as a database or memory, or to a remote device (not shown) via the network 135.
  • the program that performs the flowchart of FIG. 7 may be the program module 120.
  • the system 100 can be operated as a terminal 11.
  • the present invention is not limited to the above embodiment, and can be variously modified and implemented without departing from the gist of the present invention.
  • the present invention is not limited to the higher-level embodiment as it is, and at the implementation stage, the components can be modified and embodied within a range that does not deviate from the gist thereof.
  • inventions can be formed by appropriately combining a plurality of components disclosed in the above embodiment. For example, some components may be removed from all the components shown in the embodiments. In addition, components from different embodiments may be combined as appropriate.
  • Sensor terminal 11a Sensor device 11b: Sensing data storage unit 11c: Device information storage unit 11d: Wireless communication protocol operation unit 11e: Detection unit 11e 1 : Position information detection unit 11e 2 : Installer detection unit 11e 3 : Environmental information Detection unit 11f: Metadata storage processing unit 12: Data collection unit 12a: Wireless communication protocol operation unit 12b: Collected data processing unit 12c: Data batch transmission unit 13: Data analysis unit 15: Data collection network 301 to 303: Data collection system

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Abstract

L'objectif de la présente invention est de fournir un système de collecte de données, un terminal, un procédé de collecte de données et un programme par lesquels divers types de métadonnées peuvent être collectées au moyen d'une communication sans fil et par lesquels les données de détection et les métadonnées peuvent être associées les unes aux autres sans erreurs.　Un système de collecte de données 301 selon la présente invention réalise une communication depuis des terminaux 11 vers une unité de collecte de données 12 à l'aide d'un protocole de communication sans fil standardisé, le système de collecte de données étant caractérisé en ce que : chacun des terminaux 11 stocke des métadonnées autres que des données de détection détectées par un dispositif de capteur dans une région d'extension dans un cadre de système de commande prescrit par le protocole de communication sans fil ; et l'unité de collecte de données 12 collecte les métadonnées pour chacun des terminaux 11 sur la base d'informations identifiant le terminal 11 qui est décrit dans le cadre de système de commande.
PCT/JP2020/026240 2020-07-03 2020-07-03 Système de collecte de données, terminal, procédé de collecte de données et programme WO2022003964A1 (fr)

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JP2022533004A JP7494909B2 (ja) 2020-07-03 2020-07-03 データ収集システム、端末、データ収集方法、及びプログラム

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