WO2021140882A1 - Communication network construction method and communication network consturuction device - Google Patents

Communication network construction method and communication network consturuction device Download PDF

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Publication number
WO2021140882A1
WO2021140882A1 PCT/JP2020/047513 JP2020047513W WO2021140882A1 WO 2021140882 A1 WO2021140882 A1 WO 2021140882A1 JP 2020047513 W JP2020047513 W JP 2020047513W WO 2021140882 A1 WO2021140882 A1 WO 2021140882A1
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WO
WIPO (PCT)
Prior art keywords
relay device
communication network
network construction
base station
relay
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PCT/JP2020/047513
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French (fr)
Japanese (ja)
Inventor
小野　正人
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株式会社かもめや
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Application filed by 株式会社かもめや filed Critical 株式会社かもめや
Priority to JP2021569809A priority Critical patent/JPWO2021140882A1/ja
Publication of WO2021140882A1 publication Critical patent/WO2021140882A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures

Definitions

  • the present invention relates to a communication network construction method and a communication network construction device for constructing a communication network for wireless communication.
  • Patent Document 1 discloses a system that enables a terminal to communicate via a relay station included in an unmanned flight device by floating an unmanned flight device provided with a relay station for wireless communication in the sky.
  • the present invention has been made in view of these points, and an object of the present invention is to make it possible to easily expand the communicable range when constructing a communication network for wireless communication.
  • the first unmanned transport device transports a first relay device that relays a base station radio communication signal emitted by an existing base station, thereby carrying out the base station radio communication.
  • the second unmanned transport device emits the first first relay device. It has a step of installing the second relay device at a second position where the first wireless communication signal can be received by transporting the second relay device that relays the wireless communication signal.
  • the information processing device installs the step of determining the first position where the first relay device is installed and the second relay device.
  • the information processing apparatus may further include a step of determining the second position in which the second relay device is installed.
  • the third unmanned transport device can receive the second wireless communication signal by transporting the third relay device that relays the second wireless communication signal emitted by the second relay device. It further has a step of installing the third relay device at three positions, and the second relay device and the third relay device are such that the first relay device and the second relay device communicate with each other.
  • the second wireless communication signal may be transmitted and received by a second communication method different from the first communication method for transmitting and receiving signals.
  • the first unmanned transport device may install the second relay device as the second unmanned transport device.
  • the unmanned transportation device moves at least one of the first relay device and the second relay device from the installed position to another position. It may have an additional step to make it.
  • the strength of the radio wave received by the second relay device within a predetermined period after the base station emits the base station wireless communication signal is further have a step of identifying the communication state in the second relay device by measuring.
  • the communication network construction device of the second aspect of the present invention is for installing a first relay device that relays the base station radio communication signal based on the distance reached by the base station radio communication signal emitted by the existing base station.
  • a position determining unit that determines a first position capable of receiving the base station wireless communication signal, and a notification unit that notifies the first unmanned transport device that transports the first relay device of the first position.
  • the position determining unit installs the second relay device that relays the first wireless communication signal based on the distance reached by the first wireless communication signal emitted by the first relay device.
  • the second position where the wireless communication signal can be received may be determined, and the notification unit may notify the second unmanned transport device for transporting the second relay device of the second position.
  • the communication network construction device includes meteorological information indicating the weather conditions around the first relay device measured by the first relay device or the first unmanned transportation device, and geographic information indicating the geography around the first relay device.
  • the second position may be determined based on at least one of the meteorological information and the geographic information.
  • the communication network construction device further has a radio wave information acquisition unit that acquires quality information of radio waves received by the first relay device, and the position determination unit determines the second position based on the quality information. You may.
  • FIG. 1 is a schematic diagram of a communication network construction system S according to the present embodiment.
  • the communication network construction system S includes a communication network construction device 1, an unmanned transportation device 2, a base station 3, a relay device 4, and a communication terminal 5.
  • FIG. 1 shows a first unmanned transportation device 2a and a second unmanned transportation device 2b as the unmanned transportation device 2.
  • FIG. 1 shows the first relay device 4a and the second relay device 4b as the relay device 4.
  • the communication network construction system S may include other devices such as servers and terminals.
  • the communication network construction device 1 is a computer that determines the position where the relay device 4 is installed and notifies the unmanned transportation device 2 of the determined position.
  • the communication network construction device 1 is connected to a network N such as the Internet or a local area network by wire or wirelessly.
  • the unmanned transportation device 2 is a device that transports the relay device 4 based on the information received from the communication network construction device 1.
  • the unmanned transportation device 2 has a communication unit for performing wireless communication, and also has a drive unit such as a motor or an actuator for moving while holding the relay device 4 detachably.
  • the unmanned transport device 2 transports the relay device 4 by moving while holding the relay device 4, and then installs the relay device 4 by separating the relay device 4.
  • the unmanned transportation device 2 is, for example, a device (for example, a drone) that flies in the air. Further, the unmanned transportation device 2 may be a device that travels on the ground (for example, a land drone) or a device that swims on or under water (for example, a water drone or an underwater drone).
  • the base station 3 is a communication device installed at a predetermined position for transmitting and receiving wireless communication signals.
  • the base station 3 is connected to the network N by wire or wirelessly.
  • the base station 3 is provided with equipment necessary for transmitting and receiving radio waves for wireless communication, such as an antenna, a processor, and an electric circuit.
  • the relay device 4 is a communication device that can be transported by the unmanned transport device 2 that relays the wireless communication signal.
  • the relay device 4 (relay station) is provided with equipment necessary for transmitting and receiving radio waves for wireless communication, such as an antenna, a processor, and an electric circuit.
  • the relay device 4 includes a power source of at least one of a battery and a solar panel, and operates autonomously at the place where it is installed even if it is not connected to an external power source.
  • the communication terminal 5 is a computer that performs wireless communication.
  • the communication terminal 5 is, for example, a smartphone, a tablet terminal, or a personal computer.
  • the communication terminal 5 communicates with another communication terminal via the network N by transmitting and receiving radio waves between the base station 3 and at least one of the relay devices 4.
  • the communication network construction device 1 is a first capable of receiving a base station radio communication signal for installing the first relay device 4a based on the distance reached by the base station radio communication signal emitted by the existing base station 3. Determine the position.
  • the distance reached by the base station radio communication signal is, for example, the maximum distance at which the received power (radio wave intensity) becomes a predetermined value or more when the base station radio communication signal is received at a position distant from the base station 3. ..
  • the communication network construction device 1 notifies the first unmanned transportation device 2a of the determined first position via the base station 3.
  • the first unmanned transportation device 2a transports the first relay device 4a to install the first relay device 4a at the first position notified by the communication network construction device 1.
  • the communication terminal 5 within a predetermined range from the first position can communicate with the network N via the base station 3 and the first relay device 4a.
  • the communication network construction device 1 can receive the first wireless communication signal for installing the second relay device 4b based on the distance reached by the first wireless communication signal emitted by the first relay device 4a. 2 Determine the position.
  • the distance reached by the first wireless communication signal is, for example, the maximum distance at which the received power becomes a predetermined value or more when the first wireless communication signal is received at a position separated from the first relay device 4a.
  • the communication network construction device 1 notifies the second unmanned transportation device 2b of the determined second position via the base station 3 and the first relay device 4a.
  • the second unmanned transportation device 2b transports the second relay device 4b to install the second relay device 4b at the second position notified by the communication network construction device 1.
  • the second unmanned transport device 2b that transports the second relay device 4b may be the first unmanned transport device 2a, or may be an unmanned transport device 2 different from the first unmanned transport device 2a.
  • the communication terminal 5 within a predetermined range from the second position can communicate with the network N via the base station 3, the first relay device 4a, and the second relay device 4b.
  • the communication network construction system S uses the unmanned transportation device 2 to install the relay device 4 within the communicable range of the existing base station 3, and further installs a new relay device 4 within the communicable range of the installed relay device 4.
  • a relay device 4 is installed.
  • the communication network construction system S can easily extend the communicable range of wireless communication via the base station 3 and the relay device 4.
  • FIG. 2 is a block diagram of the communication network construction system S according to the present embodiment.
  • the arrows indicate the main data flows, and there may be data flows other than those shown in FIG.
  • each block shows not a hardware (device) unit configuration but a functional unit configuration. Therefore, the block shown in FIG. 2 may be mounted in a single device, or may be mounted separately in a plurality of devices. Data can be exchanged between blocks via any means such as a data bus, a network, or a portable storage medium.
  • the communication network construction device 1 has a communication unit 11, a storage unit 12, and a control unit 13.
  • the control unit 13 includes a radio wave information acquisition unit 131, an environment information acquisition unit 132, a position determination unit 133, and a notification unit 134.
  • the communication unit 11 is a communication interface for communicating with the unmanned transportation device 2.
  • the storage unit 12 is a storage medium including a ROM (Read Only Memory), a RAM (Random Access Memory), a hard disk drive, and the like.
  • the storage unit 12 stores in advance the program executed by the control unit 13.
  • the storage unit 12 may be provided outside the communication network construction device 1, and in that case, data may be exchanged with the control unit 13 via the network.
  • the control unit 13 is, for example, a processor such as a CPU (Central Processing Unit), and by executing a program stored in the storage unit 12, the radio wave information acquisition unit 131, the environment information acquisition unit 132, the position determination unit 133, and the notification unit 13 are executed. It functions as a unit 134.
  • the radio wave information acquisition unit 131 acquires radio wave information related to radio waves transmitted and received by the base station 3 and the relay device 4.
  • the environmental information acquisition unit 132 acquires environmental information regarding the environment in which the relay device 4 is installed.
  • the position determining unit 133 determines the position where the relay device 4 is installed.
  • the notification unit 134 notifies the unmanned transportation device 2 of information such as the position where the relay device 4 is installed.
  • At least a part of the function of the control unit 13 may be executed by an electric circuit. Further, at least a part of the functions of the control unit 13 may be realized by the control unit 13 executing a program executed via the network.
  • the communication network construction system S is not limited to the specific configuration shown in FIG.
  • the communication network construction device 1 may be configured by connecting two or more physically separated devices by wire or wirelessly.
  • the communication network construction device 1 may be composed of a single computer, a plurality of computers that cooperate with each other, or a cloud that is a collection of computer resources.
  • FIG. 3 is a schematic diagram for explaining a method in which the first unmanned transportation device 2a installs the first relay device 4a.
  • the communication network construction device 1 determines the first position for installing the first relay device 4a based on the radio wave information about the radio waves transmitted and received by the base station 3, and then the first unmanned transportation device 2a determines the first position.
  • the relay device 4a is installed at the first position.
  • the flow of processing until the first unmanned transportation device 2a installs the first relay device 4a will be described.
  • the radio wave information acquisition unit 131 acquires radio wave information from the storage unit 12 or the base station 3.
  • the radio wave information includes, for example, information indicating the reachable distance of the base station radio communication signal emitted by the base station 3, and is stored in advance in the storage unit 12 or the base station 3.
  • FIG. 3 shows the distance reached by the base station radio communication signal as the communicable range R of the base station 3.
  • the environmental information acquisition unit 132 acquires the environmental information regarding the environment at the position where the first relay device 4a is to be installed from the storage unit 12.
  • the environmental information indicates, for example, a range of positions where the first relay device 4a can be installed (latitude and longitude range) within the communicable range R, and geographic information (altitude, presence / absence of obstacles, etc.) within the communicable range R. Information) is included.
  • the range of positions where the first relay device 4a can be installed may be stored in the storage unit 12 in advance, or may be input by the user before installing the first relay device 4a.
  • the position determination unit 133 installs a first relay device 4a that relays the base station radio communication signal based on the distance reached by the base station radio communication signal included in the radio wave information acquired by the radio wave information acquisition unit 131.
  • the first position where the base station radio communication signal can be received is determined.
  • the base station wireless communication signal is transmitted with reference to the base station 3 within the range of the position where the first relay device 4a included in the environmental information acquired by the environmental information acquisition unit 132 can be installed.
  • the farthest position within the reachable distance is determined as the first position.
  • the position-fixing unit 133 uses the base station 3 as a reference in a position where the geographic information included in the environmental information satisfies a predetermined condition (for example, a position where the altitude is equal to or higher than a predetermined value), and the base station wireless communication signal. The farthest position within the reach of may be determined as the first position. Further, the position-fixing unit 133 may change the distance reached by the base station radio communication signal according to the geographic information included in the environmental information. In this case, for example, the higher the altitude indicated by the geographic information, the longer the distance reached by the base station radio communication signal, and the lower the altitude indicated by the geographic information, the longer the distance reached by the base station radio communication signal. shorten.
  • a predetermined condition for example, a position where the altitude is equal to or higher than a predetermined value
  • the position-determining unit 133 identifies a plurality of candidate positions within a distance that the base station radio communication signal can reach with reference to the base station 3 within the range of positions where the first relay device 4a can be installed.
  • a plurality of specified candidate positions may be displayed on a display unit such as a liquid crystal display.
  • the position-determining unit 133 accepts the selection of any one of the candidate positions from the plurality of candidate positions from the user, and determines the selected candidate position as the first position.
  • the position-determining unit 133 can reflect the intention of the user at the position where the first relay device 4a is installed.
  • the notification unit 134 notifies the first unmanned transportation device 2a that transports the first relay device 4a of the unmanned transportation devices 2 waiting at the base of the first position determined by the position-determining unit 133.
  • the first unmanned transportation device 2a uses the drive unit to hold the first relay device 4a when the communication network construction device 1 notifies the first position. Further, the first unmanned transportation device 2a may stand by while holding the first relay device 4a before receiving the notification of the first position.
  • the first unmanned transportation device 2a moves from the base to the first position while holding the first relay device 4a.
  • the communication network construction device 1 transmits a control signal for controlling the movement of the first unmanned transportation device 2a via the base station 3 to the first unmanned transportation device 2a.
  • the first unmanned transport device 2a installs the first relay device 4a in the first position by separating the first relay device 4a using a drive unit after reaching the first position. Then, the first unmanned transportation device 2a returns from the first position to the base.
  • the first relay device 4a After being installed at the first position, the first relay device 4a relays the wireless communication signal emitted by the base station 3 to the communication terminal 5, and transmits the wireless communication signal emitted by the communication terminal 5 to the base station 3. It will be relayed to.
  • the base station 3 and the first relay device 4a may send and receive wireless communication signals on a one-to-one basis using a directional antenna, and a one-to-many or many-to-many wireless communication signal using an omnidirectional antenna. May be exchanged.
  • the communication terminals 5 within the range of the first radio communication signal emitted by the first relay device 4a with reference to the first position where the first relay device 4a is installed are the base station 3 and the first. Communication with the network N becomes possible via the 1 relay device 4a.
  • FIG. 4 is a schematic diagram for explaining a method in which the second unmanned transportation device 2b installs the second relay device 4b.
  • the communication network construction device 1 determines the second position for installing the second relay device 4b based on the radio wave information regarding the radio waves transmitted and received by the first relay device 4a, and then the second unmanned transportation device 2b determines the second position.
  • the second relay device 4b is installed at the second position.
  • the flow of processing until the second unmanned transportation device 2b installs the second relay device 4b will be described.
  • the radio wave information acquisition unit 131 acquires radio wave information from the storage unit 12 or the first relay device 4a.
  • the radio wave information includes, for example, information indicating the distance reached by the first radio communication signal emitted by the first relay device 4a, and is stored in advance in the storage unit 12 or the first relay device 4a.
  • FIG. 4 shows the distance reached by the first wireless communication signal as the communicable range Ra of the first relay device 4a.
  • the radio wave information acquisition unit 131 may acquire radio wave information including quality information of the radio wave received by the first relay device 4a in addition to the distance reached by the first radio communication signal.
  • the quality information is, for example, information (signal-to-noise ratio, etc.) indicating the degree of noise (noise) contained in the radio wave received by the first relay device 4a.
  • the environmental information acquisition unit 132 acquires environmental information regarding the environment at the position where the second relay device 4b is to be installed from the storage unit 12.
  • the environmental information indicates, for example, the range of positions where the second relay device 4b can be installed (latitude and longitude range) within the communicable range Ra, and the geographical information (altitude, presence / absence of obstacles, etc.) within the communicable range Ra. Information) is included.
  • the range of positions where the second relay device 4b can be installed may be stored in the storage unit 12 in advance, or may be input by the user before installing the second relay device 4b.
  • the environmental information acquisition unit 132 shows the weather information indicating the weather condition around the first relay device 4a and the geography around the first relay device 4a, in addition to the range of the positions where the second relay device 4b can be installed.
  • Environmental information including at least one of the geographic information may be acquired.
  • the meteorological information is, for example, information (precipitation, wind speed, etc.) indicating the weather at the first position where the first relay device 4a is installed.
  • the geographic information is, for example, the altitude of the first position where the first relay device 4a is installed. Meteorological information and geographic information may be measured by the first relay device 4a, or may be measured by the first unmanned transportation device 2a that has transported the first relay device 4a.
  • the position-fixing unit 133 is a first radio communication signal for installing the second relay device 4b based on the distance reached by the first radio communication signal included in the radio wave information acquired by the radio wave information acquisition unit 131. Determines a second position where the can be received. For example, the position-fixing unit 133 uses the first relay device 4a as a reference in the first wireless communication within the range of the position where the second relay device 4b included in the environmental information acquired by the environmental information acquisition unit 132 can be installed. The farthest position within the reach of the signal is determined as the second position.
  • the position determining unit 133 uses the first relay device 4a as a reference in the position where the geographic information included in the environmental information satisfies the predetermined condition (for example, the position where the altitude is equal to or higher than the predetermined value).
  • the farthest position within the reach of the communication signal may be determined as the second position.
  • the position-fixing unit 133 may change the distance reached by the first radio communication signal according to the geographic information included in the environmental information. In this case, for example, the higher the altitude indicated by the geographic information, the longer the distance reached by the first radio communication signal, and the lower the altitude indicated by the geographic information, the longer the distance reached by the first radio communication signal. shorten.
  • the position-determining unit 133 identifies a plurality of candidate positions within a distance that the first wireless communication signal can reach with reference to the first relay device 4a within the range of positions where the second relay device 4b can be installed. Then, the specified plurality of candidate positions may be displayed on a display unit such as a liquid crystal display. In this case, the position-determining unit 133 accepts the selection of any one of the candidate positions from the plurality of candidate positions from the user, and determines the selected candidate position as the second position. As a result, the position-determining unit 133 can reflect the intention of the user at the position where the second relay device 4b is installed.
  • the position determination unit 133 determines the second position based on the quality information included in the radio wave information acquired by the radio wave information acquisition unit 131 in addition to the distance reached by the first radio communication signal. Good.
  • the position-determining unit 133 is closer to the first relay device 4a than when it is not. Set the second position.
  • the signal-to-noise ratio is low, the communicable distance tends to be short, so the communication network construction device 1 is placed in a position where communication is more stable in consideration of the quality information of the radio waves received by the first relay device 4a.
  • the relay device 4b can be installed. Further, when a plurality of first relay devices 4a are already installed, the position-determining unit 133 uses the first relay device 4a having the highest signal-to-noise ratio indicated by the quality information among the plurality of first relay devices 4a.
  • the second position may be set within the communicable range of.
  • the position-fixing unit 133 may determine the second position based on at least one of the weather information and the geographic information acquired by the environmental information acquisition unit 132 in addition to the distance reached by the first radio communication signal. .. In this case, when the meteorological information satisfies the predetermined condition (for example, when the precipitation amount is equal to or higher than the predetermined value), the position-fixing unit 133 is closer to the first relay device 4a than in the case where the weather information does not satisfy the predetermined value. Set the position. Since the communicable distance tends to be shortened when it is raining, the communication network construction device 1 is placed in a position where communication is more stable in consideration of the weather information at the position where the first relay device 4a is installed.
  • the relay device 4b can be installed. Further, the position-fixing unit 133 may decide not to install the second relay device 4b when the weather information satisfies a predetermined condition (for example, when the wind speed is equal to or higher than a predetermined value). Further, when a plurality of first relay devices 4a are already installed, the position-fixing unit 133 has the best weather indicated by the weather information among the plurality of first relay devices 4a (for example, the lowest precipitation amount). ) The second position may be set within the communicable range of the first relay device 4a.
  • a predetermined condition for example, when the wind speed is equal to or higher than a predetermined value.
  • the position determining unit 133 sets the second position farther from the first relay device 4a than in the case where the altitude does not satisfy the predetermined value. To do. Since the higher the altitude, the longer the communicable distance tends to be, the communication network construction device 1 is located farther from the first relay device 4a in consideration of the geographical information of the position where the first relay device 4a is installed. The second relay device 4b can be installed in. Further, when a plurality of first relay devices 4a are already installed, the position-fixing unit 133 can communicate with the first relay device 4a having the highest altitude indicated by the geographical information among the plurality of first relay devices 4a. The second position may be set within the range.
  • the position determining unit 133 may determine the second position based on the remaining battery level of the first relay device 4a. In this case, the position-determining unit 133 acquires the remaining battery level of the first relay device 4a, and when the acquired remaining battery level satisfies a predetermined condition (for example, when the remaining battery level is equal to or less than a predetermined value). , The second position is set closer to the first relay device 4a as compared with the case where it is not. As a result, the communication network construction device 1 can construct a communication network so that communication can be performed using the second relay device 4b even when the battery of the first relay device 4a runs out.
  • a predetermined condition for example, when the remaining battery level is equal to or less than a predetermined value
  • the notification unit 134 notifies the second unmanned transportation device 2b that transports the second relay device 4b of the unmanned transportation devices 2 waiting at the base of the second position determined by the position-determining unit 133. Further, the notification unit 134 may notify the first unmanned transportation device 2a of the second position. In this case, the first unmanned transport device 2a functions as the second unmanned transport device 2b.
  • the second unmanned transport device 2b uses the drive unit to hold the second relay device 4b when the communication network construction device 1 notifies the second position. Further, the second unmanned transport device 2b may stand by while holding the second relay device 4b before receiving the notification of the second position.
  • the second unmanned transportation device 2b moves from the base to the second position while holding the second relay device 4b.
  • the communication network construction device 1 transmits a control signal for controlling the movement of the second unmanned transport device 2b via the base station 3 and the first relay device 4a. It is sequentially transmitted to the second unmanned transportation device 2b.
  • the communication network construction device 1 transports the control signal via the base station 3, the first relay device 4a, and the second relay device 4b held by the second unmanned transport device 2b. It may be transmitted to the device 2b. Further, the second unmanned transport device 2b may autonomously move to the second position without using the control signal from the communication network construction device 1.
  • the second unmanned transport device 2b installs the second relay device 4b at the second position by separating the second relay device 4b using the drive unit after reaching the second position. Then, the second unmanned transportation device 2b returns from the second position to the base.
  • the second relay device 4a relays the wireless communication signal emitted by the first relay device 4a to the communication terminal 5, and the wireless communication signal emitted by the communication terminal 5 is first. It relays to the relay device 4a.
  • the first relay device 4a and the second relay device 4b may send and receive wireless communication signals on a one-to-one basis using a directional antenna, and may use an omnidirectional antenna to wirelessly transmit one-to-many or many-to-many. Communication signals may be sent and received.
  • the communication terminals 5 within the range of the second radio communication signal emitted by the second relay device 4b with reference to the second position where the second relay device 4b is installed are the base stations 3 and the second. Communication with the network N becomes possible via the first relay device 4a and the second relay device 4b.
  • the first unmanned transportation device 2a transports and installs the first relay device 4a
  • the second unmanned transportation device 2b transports and installs the second relay device 4b at the same time. That is, they may be performed in parallel.
  • the communication network construction device 1 transmits a control signal for controlling the movement of the first unmanned transportation device 2a to the first unmanned transportation device 2a via the base station 3.
  • the communication network construction device 1 transmits a control signal for controlling the movement of the second unmanned transport device 2b via the base station 3 and the first relay device 4a held by the first unmanned transport device 2a. Then, it is transmitted to the second unmanned transportation device 2b. Since the communication network construction system S can start the transportation of the second relay device 4b without waiting for the installation of the first relay device 4a to be completed, the installation of the plurality of relay devices 4 can be quickly advanced. ..
  • the first relay device 4a and the second relay device 4b each within a predetermined period (for example, after the base station 3 emits a base station radio communication signal).
  • the communication state of the first relay device 4a and the second relay device 4b may be specified by measuring the intensity of the received radio wave within 1 millisecond).
  • the first relay device 4a and the second relay device 4b transmit the specified communication state to the communication network construction device 1.
  • the radio wave information acquisition unit 131 acquires the communication state specified by the first relay device 4a and the second relay device 4b and stores it in the storage unit 12.
  • the communication network construction device 1 is installed as a first relay device 4a and a first relay device 4a when the communication states of the first relay device 4a and the second relay device 4b satisfy a predetermined condition, as will be described later with reference to FIG. 2
  • the relay device 4b may be moved to another position.
  • FIG. 5 is a schematic diagram for explaining a state in which the installation of the plurality of relay devices 4 is completed.
  • FIG. 5 shows an example in which three relay devices 4 are installed, but an arbitrary number of two or more relay devices 4 may be installed.
  • FIG. 5 shows a state in which the third unmanned transport device 2c transports and installs the third relay device 4c to the third position after the first relay device 4a and the second relay device 4b are installed.
  • the distance reached by the second radio communication signal emitted by the second relay device 4b is represented as the communicable range Rb of the second relay device 4b.
  • the distance reached by the third radio communication signal emitted by the relay device 4c is represented as the communicable range Rc of the third relay device 4c.
  • the communication terminal 5 can communicate with the network N via at least one of the base station 3, the first relay device 4a, the second relay device 4b, and the third relay device 4c.
  • the second relay device 4b and the third relay device 4c are second communication methods different from the first communication method for the first relay device 4a and the second relay device 4b to transmit and receive the first wireless communication signal.
  • the second wireless communication signal may be transmitted and received.
  • the first relay device 4a and the second relay device 4b communicate with each other by the first communication method using one of the 5.7 GHz band, the 4.9 GHz band, and the Sub-Giga band (that is, the frequency band of 1 GHz or less).
  • the second relay device 4b and the third relay device 4c communicate with each other by the second communication method using another frequency band of the 5.7 GHz band, the 4.9 GHz band, and the Sub-Giga band. ..
  • the first communication method and the second communication method may be the same.
  • the communication network construction system S can flexibly construct a communication network by combining communication methods of a plurality of frequency bands.
  • the second unmanned transportation device 2b transports and installs the second relay device 4b
  • the third unmanned transportation device 2c transports and installs the third relay device 4c at the same time. That is, they may be performed in parallel.
  • the communication network construction device 1 transmits a control signal for controlling the movement of the second unmanned transport device 2b to the second unmanned transport device 2b via the base station 3 and the first relay device 4a.
  • the communication network construction device 1 holds a control signal for controlling the movement of the third unmanned transport device 2c by the base station 3, the first relay device 4a, and the second unmanned transport device 2b. It is transmitted to the third unmanned transport device 2c via the two relay device 4b.
  • the communication network construction system S can start the transportation of the third relay device 4c without waiting for the installation of the second relay device 4b to be completed, the installation of the plurality of relay devices 4 can be quickly advanced. .. Similarly, the communication network construction system S may simultaneously transport and install three or more relay devices 4.
  • FIG. 6A and 6 (b) are schematic views for explaining the connection relationship of the plurality of relay devices 4 in wireless communication.
  • FIG. 6A shows a state in which a plurality of relay devices 4 are wirelessly connected in a straight line (series). In this case, one relay device 4 is wirelessly connected to one or two relay devices 4.
  • FIG. 6B shows a state in which a plurality of relay devices 4 are wirelessly connected in a mesh shape (net shape). In this case, one relay device 4 is wirelessly connected to one or more relay devices 4.
  • the relay device 4 can be installed by using the unmanned transportation device 2 to construct the communication network in both the linear and mesh-like connection relationships. Further, the communication network construction system S may construct a communication network by combining a linear connection relationship and a mesh-like connection relationship.
  • the communication network construction system S uses the unmanned transportation device 2 to install the relay device 4 within the communicable range of the existing base station 3, and further installs the relay device 4 within the communicable range of the installed relay device 4. Repeatedly installing the relay device 4. As a result, the communication network construction system S can easily extend the communicable range of wireless communication via the base station 3 and the relay device 4.
  • the communication network construction system S may make an application before installing the relay device 4.
  • the notification unit 134 generates application information including the position of the relay device 4 determined by the position determination unit 133, the radio wave output of the relay device 4, and the operating time of the relay device 4, and the generated application information. Is notified to a predetermined external device (for example, a server managed by a predetermined organization). Then, the notification unit 134 notifies the unmanned transportation device 2 that transports the relay device 4 of the position determined by the position determination unit 133 on condition that the information indicating that the application information has been approved is received from the external device. .. As a result, the communication network construction system S can install the relay device 4 according to the information applied in advance.
  • the communication line provided by the communication carrier such as LTE (Long Term Evolution) can be used as a backup purpose. Good.
  • at least one of the plurality of relay devices 4 includes a SIM (Subscriber Identity Module) for using the communication line.
  • SIM Subscriber Identity Module
  • some of the relay devices 4 among the plurality of relay devices 4 constituting the communication network may be transported and installed by using a vehicle or a ship operated by a human.
  • the relay device 4 in addition to installing the relay device 4 using the unmanned transportation device 2, the relay device 4 can be efficiently installed by human work.
  • the communication network construction device 1 may move at least one relay device 4 out of the plurality of relay devices 4 from the installed position to another position after the plurality of relay devices 4 are installed.
  • FIG. 7 is a schematic diagram for explaining a method of moving the installed relay device 4.
  • FIG. 7 shows an example in which the communication network construction device 1 moves the first relay device 4a and the second relay device 4b.
  • the position determining unit 133 determines whether or not the conditions for determining the moving destination position of the installed relay device 4 are satisfied.
  • the condition for determining the moving destination position is, for example, that the intensity of the radio wave in at least one of the first relay device 4a and the second relay device 4b acquired by the radio wave information acquisition unit 131 is a predetermined value or less.
  • the position-determining unit 133 determines the position of at least one of the first relay device 4a and the second relay device 4b. For example, the position-determining unit 133 sets the destination position of the first relay device 4a at a position higher than the first position based on the altitude indicated by the geographic information within the range of the distance reached by the base station radio communication signal. decide.
  • the position-determining unit 133 sets the destination position of the second relay device 4b at a position higher than the second position based on the altitude indicated by the geographic information within the range of the distance reached by the first radio communication signal. decide. As a result, for example, when the communication status at the position where the first relay device 4a and the second relay device 4b are installed is poor, the position determining unit 133 determines the moving destination position having a higher altitude and better visibility, and the communication status is changed. Improvements can be made.
  • the notification unit 134 notifies any unmanned transportation device 2 waiting at the base of the movement destination position of the first relay device 4a determined by the position determination unit 133.
  • the unmanned transport device 2 receives the notification of the destination position from the communication network construction device 1, the unmanned transport device 2 moves to the first position where the first relay device 4a is installed, and uses the drive unit to move to the first relay device 4a. To hold.
  • the unmanned transport device 2 moves from the first position to the destination position while holding the first relay device 4a.
  • the unmanned transport device 2 installs the first relay device 4a at the destination position by separating the first relay device 4a using the drive unit after reaching the destination position.
  • the notification unit 134 notifies any unmanned transportation device 2 waiting at the base of the destination position of the second relay device 4b determined by the position determination unit 133.
  • the unmanned transport device 2 receives the notification of the destination position from the communication network construction device 1, the unmanned transport device 2 moves to the second position where the second relay device 4b is installed, and uses the drive unit to move to the second relay device 4b. To hold. The unmanned transport device 2 moves from the second position to the destination position while holding the second relay device 4b. The unmanned transport device 2 installs the second relay device 4b at the destination position by separating the second relay device 4b using the drive unit after reaching the destination position.
  • the communication network construction device 1 may move the relay device 4 installed at the destination position to another destination position. In this way, the communication network construction system S can flexibly change the communication network according to the situation by moving the installed relay device 4 by the unmanned transportation device 2.
  • FIG. 8 is a sequence diagram of a communication network construction method executed by the communication network construction system S according to the present embodiment.
  • the radio wave information acquisition unit 131 acquires radio wave information related to radio waves transmitted and received by the base station 3 from the storage unit 12 or the base station 3.
  • the environmental information acquisition unit 132 acquires the environmental information regarding the environment at the position where the first relay device 4a is to be installed from the storage unit 12 (S11).
  • the position determination unit 133 installs a first relay device 4a that relays the base station radio communication signal based on the distance reached by the base station radio communication signal included in the radio wave information acquired by the radio wave information acquisition unit 131.
  • the first position where the base station radio communication signal can be received is determined (S12).
  • the notification unit 134 notifies the first unmanned transportation device 2a that transports the first relay device 4a of the unmanned transportation devices 2 waiting at the base of the first position determined by the position-determining unit 133 (S13). ..
  • the first unmanned transportation device 2a holds the first relay device 4a by using the drive unit when the communication network construction device 1 notifies the first position.
  • the first unmanned transportation device 2a moves from the base to the first position while holding the first relay device 4a.
  • the first unmanned transport device 2a installs the first relay device 4a in the first position by separating the first relay device 4a using a drive unit (S14). Then, the first unmanned transportation device 2a returns from the first position to the base.
  • the radio wave information acquisition unit 131 stores radio wave information related to the radio waves transmitted and received by the first relay device 4a in the storage unit 12 or the first. 1 Obtained from the relay device 4a. Further, the environmental information acquisition unit 132 acquires the environmental information regarding the environment at the position where the second relay device 4b is to be installed from the storage unit 12 (S15).
  • the position-fixing unit 133 is a first radio communication signal for installing the second relay device 4b based on the distance reached by the first radio communication signal included in the radio wave information acquired by the radio wave information acquisition unit 131. Is determined (S16).
  • the notification unit 134 notifies the second unmanned transportation device 2b that transports the second relay device 4b of the unmanned transportation devices 2 waiting at the base of the second position determined by the position-determining unit 133 (S17). ..
  • the second unmanned transport device 2b uses the drive unit to hold the second relay device 4b when the communication network construction device 1 notifies the second position.
  • the second unmanned transportation device 2b moves from the base to the second position while holding the second relay device 4b.
  • the second unmanned transport device 2b installs the second relay device 4b at the second position by separating the second relay device 4b using the drive unit (S18). Then, the second unmanned transportation device 2b returns from the second position to the base.
  • the communication network construction device 1 may use the unmanned transportation device 2 to move at least one of the first relay device 4a and the second relay device 4b from the installed position to another position. Further, the communication network construction device 1 may transport and install another relay device 4 (for example, a third relay device 4c) by using the unmanned transportation device 2.
  • another relay device 4 for example, a third relay device 4c
  • the communication network construction device 1 uses the first unmanned transportation device 2a to place the first relay device 4a at the first position within the communicable range of the existing base station 3. Install. Further, the communication network construction device 1 installs the second relay device 4b at the second position within the communicable range of the first relay device 4a by the second unmanned transportation device 2b. As a result, the communication network construction system S can install the relay device 4 one after another by using the unmanned transport device 2 outside the communicable range of the existing base station 3, so that the radio can be installed via the base station 3 and the relay device 4. The communication range of communication can be easily expanded.
  • the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes can be made within the scope of the gist thereof. is there.
  • the specific embodiment of the distribution / integration of the device is not limited to the above embodiment, and all or a part thereof may be functionally or physically distributed / integrated in any unit. Can be done.
  • Also included in the embodiments of the present invention are new embodiments resulting from any combination of the plurality of embodiments. The effect of the new embodiment produced by the combination has the effect of the original embodiment together.
  • the processors of the communication network construction device 1 and the unmanned transportation device 2 are the main components of each step included in the communication network construction method shown in FIG. That is, the processors of the communication network construction device 1 and the unmanned transportation device 2 read a program for executing the communication network construction method shown in FIG. 8 from the storage unit, execute the program, and execute each part of the communication network construction system S. By controlling, the communication network construction method shown in FIG. 8 is executed. Some of the steps included in the communication network construction method shown in FIG. 8 may be omitted, the order between the steps may be changed, and a plurality of steps may be performed in parallel.
  • Communication network construction system 1 Communication network construction device 13 Control unit 131 Radio wave information acquisition unit 132 Environmental information acquisition unit 133 Positioning unit 134 Notification unit 2 Unmanned transportation device 2a 1st unmanned transportation device 2b 2nd unmanned transportation device 2c 3rd unmanned Transport device 3 Base station 4 Relay device 4a 1st relay device 4b 2nd relay device 4c 3rd relay device

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Abstract

The communication network construction method according to one embodiment of the present invention comprises: a step in which a first unmanned transport device 2a transports a first relay device 4a, which relays a base station wireless communication signal that an existing base station 3 transmits, to a first position where the base station wireless communication signal can be received, and installs the first relay device 4a thereat; and a step in which a second unmanned transport device 2b transports, after or at the same time as the step for installing the first relay device 4a, a second relay device 4b, which relays a first wireless communication signal that the first relay device 4a transmits, to a second position where the first wireless communication signal can be received, and installs the second relay device 4b thereat.

Description

通信網構築方法及び通信網構築装置Communication network construction method and communication network construction device
　本発明は、無線通信の通信網を構築するための通信網構築方法及び通信網構築装置に関する。 The present invention relates to a communication network construction method and a communication network construction device for constructing a communication network for wireless communication.
　地震等の災害が発生した際に、基地局や中継局が破損することにより、特定の地域の通信網が寸断する場合がある。このような場合には、当該地域の通信網を速やかに構築することが求められる。特許文献１には、無線通信の中継局を備える無人飛行装置を上空に浮揚させることによって、無人飛行装置が備える中継局を介して端末を通信可能にするシステムが開示されている。 When a disaster such as an earthquake occurs, the communication network in a specific area may be disrupted due to damage to the base station or relay station. In such a case, it is required to promptly build a communication network in the area. Patent Document 1 discloses a system that enables a terminal to communicate via a relay station included in an unmanned flight device by floating an unmanned flight device provided with a relay station for wireless communication in the sky.
特開２０１８－１７７１３５号公報Japanese Unexamined Patent Publication No. 2018-177135
　特許文献１に記載されたシステムでは、地上の基地局（フィーダ局）の通信可能範囲内に、無人飛行装置内の中継局が位置する必要がある。特許文献１に記載されたシステムにおいて、通信可能範囲を拡張するためには地上の基地局を移動又は増設する必要があるため、通信可能範囲を拡張することは容易でない。 In the system described in Patent Document 1, it is necessary that the relay station in the unmanned flight device is located within the communicable range of the base station (feeder station) on the ground. In the system described in Patent Document 1, it is not easy to expand the communicable range because it is necessary to move or add a base station on the ground in order to expand the communicable range.
　本発明はこれらの点に鑑みてなされたものであり、無線通信の通信網を構築する際に、通信可能範囲を容易に拡張できるようにすることを目的とする。 The present invention has been made in view of these points, and an object of the present invention is to make it possible to easily expand the communicable range when constructing a communication network for wireless communication.
　本発明の第１の態様の通信網構築方法は、第１無人輸送装置が、既設の基地局が発する基地局無線通信信号を中継する第１中継装置を輸送することによって、前記基地局無線通信信号を受信可能な第１位置に前記第１中継装置を設置するステップと、前記第１中継装置を設置するステップの後に又は同時に、第２無人輸送装置が、前記第１中継装置が発する第１無線通信信号を中継する第２中継装置を輸送することによって、前記第１無線通信信号を受信可能な第２位置に前記第２中継装置を設置するステップと、を有する。 In the method for constructing a communication network according to the first aspect of the present invention, the first unmanned transport device transports a first relay device that relays a base station radio communication signal emitted by an existing base station, thereby carrying out the base station radio communication. After or at the same time as the step of installing the first relay device at the first position where the signal can be received and the step of installing the first relay device, the second unmanned transport device emits the first first relay device. It has a step of installing the second relay device at a second position where the first wireless communication signal can be received by transporting the second relay device that relays the wireless communication signal.
　前記通信網構築方法は、前記第１中継装置を設置するステップの前に、情報処理装置が、前記第１中継装置を設置する前記第１位置を決定するステップと、前記第２中継装置を設置するステップの前に、前記情報処理装置が、前記第２中継装置を設置する前記第２位置を決定するステップと、をさらに有してもよい。 In the communication network construction method, before the step of installing the first relay device, the information processing device installs the step of determining the first position where the first relay device is installed and the second relay device. The information processing apparatus may further include a step of determining the second position in which the second relay device is installed.
　前記通信網構築方法は、第３無人輸送装置が、前記第２中継装置が発する第２無線通信信号を中継する第３中継装置を輸送することによって、前記第２無線通信信号を受信可能な第３位置に、前記第３中継装置を設置するステップをさらに有し、前記第２中継装置と前記第３中継装置とは、前記第１中継装置と前記第２中継装置とが前記第１無線通信信号を送受信するための第１通信方式とは異なる第２通信方式で、前記第２無線通信信号を送受信してもよい。 In the communication network construction method, the third unmanned transport device can receive the second wireless communication signal by transporting the third relay device that relays the second wireless communication signal emitted by the second relay device. It further has a step of installing the third relay device at three positions, and the second relay device and the third relay device are such that the first relay device and the second relay device communicate with each other. The second wireless communication signal may be transmitted and received by a second communication method different from the first communication method for transmitting and receiving signals.
　前記第２中継装置を設置するステップにおいて、前記第１無人輸送装置は、前記第２無人輸送装置として前記第２中継装置を設置してもよい。 In the step of installing the second relay device, the first unmanned transport device may install the second relay device as the second unmanned transport device.
　前記通信網構築方法は、前記第２中継装置を設置するステップの後に、無人輸送装置が、前記第１中継装置及び前記第２中継装置の少なくとも一方を、設置された位置から別の位置に移動させるステップをさらに有してもよい。 In the communication network construction method, after the step of installing the second relay device, the unmanned transportation device moves at least one of the first relay device and the second relay device from the installed position to another position. It may have an additional step to make it.
　前記通信網構築方法は、前記第２中継装置を設置するステップの後に、前記基地局が前記基地局無線通信信号を発してから所定の期間内に、前記第２中継装置が受信した電波の強度を測定することによって、前記第２中継装置における通信状態を特定するステップをさらに有してもよい。 In the communication network construction method, after the step of installing the second relay device, the strength of the radio wave received by the second relay device within a predetermined period after the base station emits the base station wireless communication signal. May further have a step of identifying the communication state in the second relay device by measuring.
　本発明の第２の態様の通信網構築装置は、既設の基地局が発する基地局無線通信信号が到達する距離に基づいて、前記基地局無線通信信号を中継する第１中継装置を設置するための、前記基地局無線通信信号を受信可能な第１位置を決定する位置決定部と、前記第１中継装置を輸送する第１無人輸送装置に前記第１位置を通知する通知部と、を有し、前記位置決定部は、前記第１中継装置が発する第１無線通信信号が到達する距離に基づいて、前記第１無線通信信号を中継する第２中継装置を設置するための、前記第１無線通信信号を受信可能な第２位置を決定し、前記通知部は、前記第２中継装置を輸送する第２無人輸送装置に前記第２位置を通知してもよい。 The communication network construction device of the second aspect of the present invention is for installing a first relay device that relays the base station radio communication signal based on the distance reached by the base station radio communication signal emitted by the existing base station. A position determining unit that determines a first position capable of receiving the base station wireless communication signal, and a notification unit that notifies the first unmanned transport device that transports the first relay device of the first position. Then, the position determining unit installs the second relay device that relays the first wireless communication signal based on the distance reached by the first wireless communication signal emitted by the first relay device. The second position where the wireless communication signal can be received may be determined, and the notification unit may notify the second unmanned transport device for transporting the second relay device of the second position.
　前記通信網構築装置は、前記第１中継装置又は前記第１無人輸送装置が測定した、前記第１中継装置周辺の気象状況を示す気象情報と、前記第１中継装置周辺の地理を示す地理情報との少なくとも一方を取得する環境情報取得部をさらに有し、前記位置決定部は、前記気象情報及び前記地理情報の少なくとも一方に基づいて前記第２位置を決定してもよい。 The communication network construction device includes meteorological information indicating the weather conditions around the first relay device measured by the first relay device or the first unmanned transportation device, and geographic information indicating the geography around the first relay device. The second position may be determined based on at least one of the meteorological information and the geographic information.
　前記通信網構築装置は、前記第１中継装置が受信した電波の品質情報を取得する電波情報取得部をさらに有し、前記位置決定部は、前記品質情報に基づいて前記第２位置を決定してもよい。 The communication network construction device further has a radio wave information acquisition unit that acquires quality information of radio waves received by the first relay device, and the position determination unit determines the second position based on the quality information. You may.
　本発明によれば、無線通信の通信網を構築する際に、通信可能範囲を容易に拡張できるという効果を奏する。 According to the present invention, when constructing a communication network for wireless communication, there is an effect that the communicable range can be easily expanded.
実施形態に係る通信網構築システムの模式図である。It is a schematic diagram of the communication network construction system which concerns on embodiment. 実施形態に係る通信網構築システムのブロック図である。It is a block diagram of the communication network construction system which concerns on embodiment. 第１無人輸送装置が第１中継装置を設置する方法を説明するための模式図である。It is a schematic diagram for demonstrating the method in which the 1st unmanned transportation apparatus installs the 1st relay apparatus. 第２無人輸送装置が第２中継装置を設置する方法を説明するための模式図である。It is a schematic diagram for demonstrating the method in which the 2nd unmanned transportation apparatus installs the 2nd relay apparatus. 複数の中継装置の設置が完了した状態を説明するための模式図である。It is a schematic diagram for demonstrating the state in which the installation of a plurality of relay devices is completed. 複数の中継装置の無線通信における接続関係を説明するための模式図である。It is a schematic diagram for demonstrating the connection relationship in wireless communication of a plurality of relay devices. 設置された中継装置を移動させる方法を説明するための模式図である。It is a schematic diagram for demonstrating the method of moving the installed relay device. 実施形態に係る通信網構築システムが実行する通信網構築方法のシーケンス図である。It is a sequence diagram of the communication network construction method executed by the communication network construction system which concerns on embodiment.
［通信網構築システムＳの概要］
　図１は、本実施形態に係る通信網構築システムＳの模式図である。通信網構築システムＳは、通信網構築装置１と、無人輸送装置２と、基地局３と、中継装置４と、通信端末５とを含む。図１は、無人輸送装置２として、第１無人輸送装置２ａ及び第２無人輸送装置２ｂを表している。図１は、中継装置４として、第１中継装置４ａ及び第２中継装置４ｂを表している。通信網構築システムＳは、その他のサーバ、端末等の機器を含んでもよい。 [Overview of communication network construction system S]
FIG. 1 is a schematic diagram of a communication network construction system S according to the present embodiment. The communication network construction system S includes a communication network construction device 1, an unmanned transportation device 2, a base station 3, a relay device 4, and a communication terminal 5. FIG. 1 shows a first unmanned transportation device 2a and a second unmanned transportation device 2b as the unmanned transportation device 2. FIG. 1 shows the first relay device 4a and the second relay device 4b as the relay device 4. The communication network construction system S may include other devices such as servers and terminals.
　通信網構築装置１は、中継装置４を設置する位置を決定し、決定した位置を無人輸送装置２に通知するコンピュータである。通信網構築装置１は、有線又は無線でインターネット、ローカルエリアネットワーク等のネットワークＮに接続される。 The communication network construction device 1 is a computer that determines the position where the relay device 4 is installed and notifies the unmanned transportation device 2 of the determined position. The communication network construction device 1 is connected to a network N such as the Internet or a local area network by wire or wirelessly.
　無人輸送装置２は、通信網構築装置１から受信した情報に基づいて、中継装置４を輸送する装置である。無人輸送装置２は、無線通信を行うための通信部を有するとともに、中継装置４を着脱可能に保持しながら移動するためのモータやアクチュエータ等の駆動部を有する。無人輸送装置２は、中継装置４を保持しながら移動することによって中継装置４を輸送した後、中継装置４を分離することによって中継装置４を設置する。無人輸送装置２は、例えば空中を飛行する装置（例えばドローン）である。また、無人輸送装置２は、地上を走行する装置（例えば陸上ドローン）や、水上又は水中を遊泳する装置（例えば水上ドローン又は水中ドローン）であってもよい。 The unmanned transportation device 2 is a device that transports the relay device 4 based on the information received from the communication network construction device 1. The unmanned transportation device 2 has a communication unit for performing wireless communication, and also has a drive unit such as a motor or an actuator for moving while holding the relay device 4 detachably. The unmanned transport device 2 transports the relay device 4 by moving while holding the relay device 4, and then installs the relay device 4 by separating the relay device 4. The unmanned transportation device 2 is, for example, a device (for example, a drone) that flies in the air. Further, the unmanned transportation device 2 may be a device that travels on the ground (for example, a land drone) or a device that swims on or under water (for example, a water drone or an underwater drone).
　基地局３は、無線通信信号を送受信する、所定の位置に設置された通信装置である。基地局３は、有線又は無線でネットワークＮに接続されている。基地局３は、アンテナ、プロセッサ、電気回路等、無線通信のための電波の送受信に必要な設備を備える。中継装置４は、無線通信信号を中継する、無人輸送装置２によって輸送されることが可能な通信装置である。中継装置４（中継局）は、アンテナ、プロセッサ、電気回路等、無線通信のための電波の送受信に必要な設備を備える。中継装置４は、電池及びソーラーパネルのうち少なくとも一方の電源を備えており、外部電源に接続されなくとも設置された場所で自律的に作動する。 The base station 3 is a communication device installed at a predetermined position for transmitting and receiving wireless communication signals. The base station 3 is connected to the network N by wire or wirelessly. The base station 3 is provided with equipment necessary for transmitting and receiving radio waves for wireless communication, such as an antenna, a processor, and an electric circuit. The relay device 4 is a communication device that can be transported by the unmanned transport device 2 that relays the wireless communication signal. The relay device 4 (relay station) is provided with equipment necessary for transmitting and receiving radio waves for wireless communication, such as an antenna, a processor, and an electric circuit. The relay device 4 includes a power source of at least one of a battery and a solar panel, and operates autonomously at the place where it is installed even if it is not connected to an external power source.
　通信端末５は、無線通信を行うコンピュータである。通信端末５は、例えばスマートフォン、タブレット端末又はパーソナルコンピュータである。通信端末５は、基地局３及び中継装置４の少なくとも一方との間で電波を送受信することによって、ネットワークＮを介して他の通信端末と通信する。 The communication terminal 5 is a computer that performs wireless communication. The communication terminal 5 is, for example, a smartphone, a tablet terminal, or a personal computer. The communication terminal 5 communicates with another communication terminal via the network N by transmitting and receiving radio waves between the base station 3 and at least one of the relay devices 4.
　本実施形態に係る通信網構築システムＳが実行する処理の概要を以下に説明する。まず通信網構築装置１は、既設の基地局３が発する基地局無線通信信号が到達する距離に基づいて、第１中継装置４ａを設置するための、基地局無線通信信号を受信可能な第１位置を決定する。基地局無線通信信号が到達する距離は、例えば基地局３から当該距離離れた位置において基地局無線通信信号が受信される場合に受信電力（電波の強度）が所定値以上となる最大距離である。通信網構築装置１は、基地局３を介して、決定した第１位置を第１無人輸送装置２ａに通知する。 The outline of the processing executed by the communication network construction system S according to this embodiment will be described below. First, the communication network construction device 1 is a first capable of receiving a base station radio communication signal for installing the first relay device 4a based on the distance reached by the base station radio communication signal emitted by the existing base station 3. Determine the position. The distance reached by the base station radio communication signal is, for example, the maximum distance at which the received power (radio wave intensity) becomes a predetermined value or more when the base station radio communication signal is received at a position distant from the base station 3. .. The communication network construction device 1 notifies the first unmanned transportation device 2a of the determined first position via the base station 3.
　第１無人輸送装置２ａは、第１中継装置４ａを輸送することによって、通信網構築装置１が通知した第１位置に第１中継装置４ａを設置する。これにより、第１位置から所定範囲内にある通信端末５は、基地局３及び第１中継装置４ａを介して、ネットワークＮとの間で通信可能になる。 The first unmanned transportation device 2a transports the first relay device 4a to install the first relay device 4a at the first position notified by the communication network construction device 1. As a result, the communication terminal 5 within a predetermined range from the first position can communicate with the network N via the base station 3 and the first relay device 4a.
　次に通信網構築装置１は、第１中継装置４ａが発する第１無線通信信号が到達する距離に基づいて、第２中継装置４ｂを設置するための、第１無線通信信号を受信可能な第２位置を決定する。第１無線通信信号が到達する距離は、例えば第１中継装置４ａから当該距離離れた位置において第１無線通信信号が受信される場合に受信電力が所定値以上となる最大距離である。通信網構築装置１は、基地局３及び第１中継装置４ａを介して、決定した第２位置を第２無人輸送装置２ｂに通知する。 Next, the communication network construction device 1 can receive the first wireless communication signal for installing the second relay device 4b based on the distance reached by the first wireless communication signal emitted by the first relay device 4a. 2 Determine the position. The distance reached by the first wireless communication signal is, for example, the maximum distance at which the received power becomes a predetermined value or more when the first wireless communication signal is received at a position separated from the first relay device 4a. The communication network construction device 1 notifies the second unmanned transportation device 2b of the determined second position via the base station 3 and the first relay device 4a.
　第２無人輸送装置２ｂは、第２中継装置４ｂを輸送することによって、通信網構築装置１が通知した第２位置に第２中継装置４ｂを設置する。第２中継装置４ｂを輸送する第２無人輸送装置２ｂは、第１無人輸送装置２ａであってもよく、第１無人輸送装置２ａとは異なる無人輸送装置２であってもよい。これにより、第２位置から所定範囲内にある通信端末５は、基地局３、第１中継装置４ａ及び第２中継装置４ｂを介して、ネットワークＮとの間で通信可能になる。 The second unmanned transportation device 2b transports the second relay device 4b to install the second relay device 4b at the second position notified by the communication network construction device 1. The second unmanned transport device 2b that transports the second relay device 4b may be the first unmanned transport device 2a, or may be an unmanned transport device 2 different from the first unmanned transport device 2a. As a result, the communication terminal 5 within a predetermined range from the second position can communicate with the network N via the base station 3, the first relay device 4a, and the second relay device 4b.
　このように通信網構築システムＳは、無人輸送装置２を用いて、既設の基地局３の通信可能範囲内に中継装置４を設置し、さらに設置した中継装置４の通信可能範囲内に新たな中継装置４を設置する。これにより、通信網構築システムＳは、基地局３及び中継装置４を介した無線通信の通信可能範囲を容易に拡張できる。 In this way, the communication network construction system S uses the unmanned transportation device 2 to install the relay device 4 within the communicable range of the existing base station 3, and further installs a new relay device 4 within the communicable range of the installed relay device 4. A relay device 4 is installed. As a result, the communication network construction system S can easily extend the communicable range of wireless communication via the base station 3 and the relay device 4.
［通信網構築システムＳの構成］
　図２は、本実施形態に係る通信網構築システムＳのブロック図である。図２において、矢印は主なデータの流れを示しており、図２に示したもの以外のデータの流れがあってよい。図２において、各ブロックはハードウェア（装置）単位の構成ではなく、機能単位の構成を示している。そのため、図２に示すブロックは単一の装置内に実装されてよく、あるいは複数の装置内に分かれて実装されてよい。ブロック間のデータの授受は、データバス、ネットワーク、可搬記憶媒体等、任意の手段を介して行われてよい。 [Configuration of communication network construction system S]
FIG. 2 is a block diagram of the communication network construction system S according to the present embodiment. In FIG. 2, the arrows indicate the main data flows, and there may be data flows other than those shown in FIG. In FIG. 2, each block shows not a hardware (device) unit configuration but a functional unit configuration. Therefore, the block shown in FIG. 2 may be mounted in a single device, or may be mounted separately in a plurality of devices. Data can be exchanged between blocks via any means such as a data bus, a network, or a portable storage medium.
　通信網構築装置１は、通信部１１と、記憶部１２と、制御部１３とを有する。制御部１３は、電波情報取得部１３１と、環境情報取得部１３２と、位置決定部１３３と、通知部１３４と、を有する。 The communication network construction device 1 has a communication unit 11, a storage unit 12, and a control unit 13. The control unit 13 includes a radio wave information acquisition unit 131, an environment information acquisition unit 132, a position determination unit 133, and a notification unit 134.
　通信部１１は、無人輸送装置２と通信を行うための通信インターフェースである。記憶部１２は、ＲＯＭ（Read Only Memory）、ＲＡＭ（Random Access Memory）、ハードディスクドライブ等を含む記憶媒体である。記憶部１２は、制御部１３が実行するプログラムを予め記憶している。記憶部１２は、通信網構築装置１の外部に設けられてもよく、その場合にネットワークを介して制御部１３との間でデータの授受を行ってもよい。 The communication unit 11 is a communication interface for communicating with the unmanned transportation device 2. The storage unit 12 is a storage medium including a ROM (Read Only Memory), a RAM (Random Access Memory), a hard disk drive, and the like. The storage unit 12 stores in advance the program executed by the control unit 13. The storage unit 12 may be provided outside the communication network construction device 1, and in that case, data may be exchanged with the control unit 13 via the network.
　制御部１３は、例えばＣＰＵ（Central Processing Unit）等のプロセッサであり、記憶部１２に記憶されたプログラムを実行することにより、電波情報取得部１３１、環境情報取得部１３２、位置決定部１３３及び通知部１３４として機能する。電波情報取得部１３１は、基地局３及び中継装置４が送受信する電波に関する電波情報を取得する。環境情報取得部１３２は、中継装置４が設置される環境に関する環境情報を取得する。位置決定部１３３は、中継装置４を設置する位置を決定する。通知部１３４は、中継装置４を設置する位置等の情報を無人輸送装置２に通知する。制御部１３の機能の少なくとも一部は電気回路によって実行されてもよい。また、制御部１３の機能の少なくとも一部は、制御部１３がネットワーク経由で実行されるプログラムを実行することによって実現されてもよい。 The control unit 13 is, for example, a processor such as a CPU (Central Processing Unit), and by executing a program stored in the storage unit 12, the radio wave information acquisition unit 131, the environment information acquisition unit 132, the position determination unit 133, and the notification unit 13 are executed. It functions as a unit 134. The radio wave information acquisition unit 131 acquires radio wave information related to radio waves transmitted and received by the base station 3 and the relay device 4. The environmental information acquisition unit 132 acquires environmental information regarding the environment in which the relay device 4 is installed. The position determining unit 133 determines the position where the relay device 4 is installed. The notification unit 134 notifies the unmanned transportation device 2 of information such as the position where the relay device 4 is installed. At least a part of the function of the control unit 13 may be executed by an electric circuit. Further, at least a part of the functions of the control unit 13 may be realized by the control unit 13 executing a program executed via the network.
　本実施形態に係る通信網構築システムＳは、図２に示す具体的な構成に限定されない。通信網構築装置１は、２つ以上の物理的に分離した装置が有線又は無線で接続されることにより構成されてもよい。通信網構築装置１は、単一のコンピュータによって構成されてもよく、互いに連携する複数のコンピュータによって構成されてもよく、コンピュータ資源の集合であるクラウドによって構成されてもよい。 The communication network construction system S according to the present embodiment is not limited to the specific configuration shown in FIG. The communication network construction device 1 may be configured by connecting two or more physically separated devices by wire or wirelessly. The communication network construction device 1 may be composed of a single computer, a plurality of computers that cooperate with each other, or a cloud that is a collection of computer resources.
［通信網構築方法の説明］
　本実施形態に係る通信網構築システムＳが実行する通信網構築方法を以下に説明する。所定の拠点に、少なくとも１つの無人輸送装置２と、少なくとも２つの中継装置４とが予め配置されており、当該無人輸送装置２が２つの中継装置４を設置することにより通信網を構築する方法を例示する。 [Explanation of communication network construction method]
The communication network construction method executed by the communication network construction system S according to the present embodiment will be described below. A method in which at least one unmanned transportation device 2 and at least two relay devices 4 are arranged in advance at a predetermined base, and the unmanned transportation device 2 installs two relay devices 4 to construct a communication network. Is illustrated.
（１）第１中継装置４ａの設置
　最初に、第１無人輸送装置２ａは、第１中継装置４ａを設置する。図３は、第１無人輸送装置２ａが第１中継装置４ａを設置する方法を説明するための模式図である。まず通信網構築装置１が、基地局３が送受信する電波に関する電波情報に基づいて第１中継装置４ａを設置するための第１位置を決定し、その後、第１無人輸送装置２ａが、第１中継装置４ａを第１位置に設置する。以下、第１無人輸送装置２ａが第１中継装置４ａを設置するまでの処理の流れを説明する。 (1) Installation of First Relay Device 4a First, the first unmanned transport device 2a installs the first relay device 4a. FIG. 3 is a schematic diagram for explaining a method in which the first unmanned transportation device 2a installs the first relay device 4a. First, the communication network construction device 1 determines the first position for installing the first relay device 4a based on the radio wave information about the radio waves transmitted and received by the base station 3, and then the first unmanned transportation device 2a determines the first position. The relay device 4a is installed at the first position. Hereinafter, the flow of processing until the first unmanned transportation device 2a installs the first relay device 4a will be described.
　まず、通信網構築装置１において、電波情報取得部１３１は、電波情報を、記憶部１２又は基地局３から取得する。電波情報は、例えば基地局３が発する基地局無線通信信号が到達する距離を示す情報を含んでおり、記憶部１２又は基地局３に予め記憶されている。図３は、基地局無線通信信号が到達する距離を、基地局３の通信可能範囲Ｒとして表している。 First, in the communication network construction device 1, the radio wave information acquisition unit 131 acquires radio wave information from the storage unit 12 or the base station 3. The radio wave information includes, for example, information indicating the reachable distance of the base station radio communication signal emitted by the base station 3, and is stored in advance in the storage unit 12 or the base station 3. FIG. 3 shows the distance reached by the base station radio communication signal as the communicable range R of the base station 3.
　環境情報取得部１３２は、第１中継装置４ａを設置する予定の位置の環境に関する環境情報を、記憶部１２から取得する。環境情報は、例えば通信可能範囲Ｒ内で第１中継装置４ａを設置可能な位置の範囲（緯度及び経度の範囲）や、通信可能範囲Ｒ内の地理情報（高度や障害物の有無等を示す情報）を含む。第１中継装置４ａを設置可能な位置の範囲は、予め記憶部１２に記憶されてもよく、第１中継装置４ａを設置する前にユーザによって入力されてもよい。 The environmental information acquisition unit 132 acquires the environmental information regarding the environment at the position where the first relay device 4a is to be installed from the storage unit 12. The environmental information indicates, for example, a range of positions where the first relay device 4a can be installed (latitude and longitude range) within the communicable range R, and geographic information (altitude, presence / absence of obstacles, etc.) within the communicable range R. Information) is included. The range of positions where the first relay device 4a can be installed may be stored in the storage unit 12 in advance, or may be input by the user before installing the first relay device 4a.
　位置決定部１３３は、電波情報取得部１３１が取得した電波情報に含まれている基地局無線通信信号が到達する距離に基づいて、基地局無線通信信号を中継する第１中継装置４ａを設置するための、基地局無線通信信号を受信可能な第１位置を決定する。例えば位置決定部１３３は、環境情報取得部１３２が取得した環境情報に含まれている第１中継装置４ａを設置可能な位置の範囲の中で、基地局３を基準として基地局無線通信信号が到達する距離以内の最も遠い位置を、第１位置として決定する。また、位置決定部１３３は、環境情報に含まれている地理情報が所定条件を満たす位置（例えば高度が所定値以上である位置等）の中で、基地局３を基準として基地局無線通信信号が到達する距離以内の最も遠い位置を、第１位置として決定してもよい。また、位置決定部１３３は、環境情報に含まれている地理情報に応じて、基地局無線通信信号が到達する距離を変更してもよい。この場合に、位置決定部１３３は、例えば地理情報が示す高度が高いほど基地局無線通信信号が到達する距離を長くし、地理情報が示す高度が低いほど基地局無線通信信号が到達する距離を短くする。 The position determination unit 133 installs a first relay device 4a that relays the base station radio communication signal based on the distance reached by the base station radio communication signal included in the radio wave information acquired by the radio wave information acquisition unit 131. The first position where the base station radio communication signal can be received is determined. For example, in the position-fixing unit 133, the base station wireless communication signal is transmitted with reference to the base station 3 within the range of the position where the first relay device 4a included in the environmental information acquired by the environmental information acquisition unit 132 can be installed. The farthest position within the reachable distance is determined as the first position. Further, the position-fixing unit 133 uses the base station 3 as a reference in a position where the geographic information included in the environmental information satisfies a predetermined condition (for example, a position where the altitude is equal to or higher than a predetermined value), and the base station wireless communication signal. The farthest position within the reach of may be determined as the first position. Further, the position-fixing unit 133 may change the distance reached by the base station radio communication signal according to the geographic information included in the environmental information. In this case, for example, the higher the altitude indicated by the geographic information, the longer the distance reached by the base station radio communication signal, and the lower the altitude indicated by the geographic information, the longer the distance reached by the base station radio communication signal. shorten.
　また、例えば位置決定部１３３は、第１中継装置４ａを設置可能な位置の範囲の中で、基地局３を基準として基地局無線通信信号が到達する距離以内の複数の候補位置を特定し、特定した複数の候補位置を液晶ディスプレイ等の表示部に表示させてもよい。この場合に、位置決定部１３３は、複数の候補位置の中からいずれか１つの候補位置の選択をユーザから受け付け、選択された候補位置を第１位置として決定する。これにより、位置決定部１３３は、第１中継装置４ａを設置する位置に、ユーザの意向を反映することができる。 Further, for example, the position-determining unit 133 identifies a plurality of candidate positions within a distance that the base station radio communication signal can reach with reference to the base station 3 within the range of positions where the first relay device 4a can be installed. A plurality of specified candidate positions may be displayed on a display unit such as a liquid crystal display. In this case, the position-determining unit 133 accepts the selection of any one of the candidate positions from the plurality of candidate positions from the user, and determines the selected candidate position as the first position. As a result, the position-determining unit 133 can reflect the intention of the user at the position where the first relay device 4a is installed.
　通知部１３４は、拠点に待機している無人輸送装置２のうち、第１中継装置４ａを輸送する第１無人輸送装置２ａに、位置決定部１３３が決定した第１位置を通知する。第１無人輸送装置２ａは、通信網構築装置１から第１位置の通知を受けた場合に、駆動部を用いて第１中継装置４ａを保持する。また、第１無人輸送装置２ａは、第１位置の通知を受ける前に、第１中継装置４ａを保持した状態で待機していてもよい。第１無人輸送装置２ａは、第１中継装置４ａを保持した状態で、拠点から第１位置へ移動する。第１無人輸送装置２ａが第１位置へ移動する際に、通信網構築装置１は、第１無人輸送装置２ａの移動を制御する制御信号を、基地局３を介して第１無人輸送装置２ａへ逐次送信する。また、通信網構築装置１は、制御信号を、基地局３と、第１無人輸送装置２ａが保持している第１中継装置４ａとを介して、第１無人輸送装置２ａへ送信してもよい。また、第１無人輸送装置２ａは、通信網構築装置１からの制御信号を用いず、自律的に第１位置へ移動してもよい。 The notification unit 134 notifies the first unmanned transportation device 2a that transports the first relay device 4a of the unmanned transportation devices 2 waiting at the base of the first position determined by the position-determining unit 133. The first unmanned transportation device 2a uses the drive unit to hold the first relay device 4a when the communication network construction device 1 notifies the first position. Further, the first unmanned transportation device 2a may stand by while holding the first relay device 4a before receiving the notification of the first position. The first unmanned transportation device 2a moves from the base to the first position while holding the first relay device 4a. When the first unmanned transportation device 2a moves to the first position, the communication network construction device 1 transmits a control signal for controlling the movement of the first unmanned transportation device 2a via the base station 3 to the first unmanned transportation device 2a. Sequentially send to. Further, even if the communication network construction device 1 transmits a control signal to the first unmanned transportation device 2a via the base station 3 and the first relay device 4a held by the first unmanned transportation device 2a. Good. Further, the first unmanned transport device 2a may autonomously move to the first position without using the control signal from the communication network construction device 1.
　第１無人輸送装置２ａは、第１位置に到達した後に、駆動部を用いて第１中継装置４ａを分離することによって、第１中継装置４ａを第１位置に設置する。そして第１無人輸送装置２ａは、第１位置から拠点に戻る。 The first unmanned transport device 2a installs the first relay device 4a in the first position by separating the first relay device 4a using a drive unit after reaching the first position. Then, the first unmanned transportation device 2a returns from the first position to the base.
　第１中継装置４ａは、第１位置に設置された後に、基地局３が発した無線通信信号を通信端末５に対して中継するとともに、通信端末５が発した無線通信信号を基地局３に対して中継する。基地局３と第１中継装置４ａとは、指向性アンテナを用いて１対１で無線通信信号を授受してもよく、無指向性アンテナを用いて１対多又は多対多で無線通信信号を授受してもよい。これにより、第１中継装置４ａが設置された第１位置を基準として、第１中継装置４ａが発する第１無線通信信号が到達する距離の範囲内にある通信端末５は、基地局３及び第１中継装置４ａを介して、ネットワークＮとの間で通信可能になる。 After being installed at the first position, the first relay device 4a relays the wireless communication signal emitted by the base station 3 to the communication terminal 5, and transmits the wireless communication signal emitted by the communication terminal 5 to the base station 3. It will be relayed to. The base station 3 and the first relay device 4a may send and receive wireless communication signals on a one-to-one basis using a directional antenna, and a one-to-many or many-to-many wireless communication signal using an omnidirectional antenna. May be exchanged. As a result, the communication terminals 5 within the range of the first radio communication signal emitted by the first relay device 4a with reference to the first position where the first relay device 4a is installed are the base station 3 and the first. Communication with the network N becomes possible via the 1 relay device 4a.
（２）第２中継装置４ｂの設置
　次に第２無人輸送装置２ｂは、第２中継装置４ｂを設置する。図４は、第２無人輸送装置２ｂが第２中継装置４ｂを設置する方法を説明するための模式図である。まず通信網構築装置１が、第１中継装置４ａが送受信する電波に関する電波情報に基づいて第２中継装置４ｂを設置するための第２位置を決定し、その後、第２無人輸送装置２ｂが、第２中継装置４ｂを第２位置に設置する。以下、第２無人輸送装置２ｂが第２中継装置４ｂを設置するまでの処理の流れを説明する。 (2) Installation of the Second Relay Device 4b Next, the second unmanned transportation device 2b installs the second relay device 4b. FIG. 4 is a schematic diagram for explaining a method in which the second unmanned transportation device 2b installs the second relay device 4b. First, the communication network construction device 1 determines the second position for installing the second relay device 4b based on the radio wave information regarding the radio waves transmitted and received by the first relay device 4a, and then the second unmanned transportation device 2b determines the second position. The second relay device 4b is installed at the second position. Hereinafter, the flow of processing until the second unmanned transportation device 2b installs the second relay device 4b will be described.
　通信網構築装置１において、電波情報取得部１３１は、電波情報を、記憶部１２又は第１中継装置４ａから取得する。電波情報は、例えば第１中継装置４ａが発する第１無線通信信号が到達する距離を示す情報を含んでおり、記憶部１２又は第１中継装置４ａに予め記憶されている。図４は、第１無線通信信号が到達する距離を、第１中継装置４ａの通信可能範囲Ｒａとして表している。 In the communication network construction device 1, the radio wave information acquisition unit 131 acquires radio wave information from the storage unit 12 or the first relay device 4a. The radio wave information includes, for example, information indicating the distance reached by the first radio communication signal emitted by the first relay device 4a, and is stored in advance in the storage unit 12 or the first relay device 4a. FIG. 4 shows the distance reached by the first wireless communication signal as the communicable range Ra of the first relay device 4a.
　また、電波情報取得部１３１は、第１無線通信信号が到達する距離に加えて、第１中継装置４ａが受信した電波の品質情報を含む電波情報を取得してもよい。品質情報は、例えば第１中継装置４ａが受信した電波に含まれている雑音（ノイズ）の程度を示す情報（信号対雑音比等）である。 Further, the radio wave information acquisition unit 131 may acquire radio wave information including quality information of the radio wave received by the first relay device 4a in addition to the distance reached by the first radio communication signal. The quality information is, for example, information (signal-to-noise ratio, etc.) indicating the degree of noise (noise) contained in the radio wave received by the first relay device 4a.
　環境情報取得部１３２は、第２中継装置４ｂを設置する予定の位置の環境に関する環境情報を、記憶部１２から取得する。環境情報は、例えば通信可能範囲Ｒａ内で第２中継装置４ｂを設置可能な位置の範囲（緯度及び経度の範囲）や、通信可能範囲Ｒａ内の地理情報（高度や障害物の有無等を示す情報）を含む。第２中継装置４ｂを設置可能な位置の範囲は、予め記憶部１２に記憶されてもよく、第２中継装置４ｂを設置する前にユーザによって入力されてもよい。 The environmental information acquisition unit 132 acquires environmental information regarding the environment at the position where the second relay device 4b is to be installed from the storage unit 12. The environmental information indicates, for example, the range of positions where the second relay device 4b can be installed (latitude and longitude range) within the communicable range Ra, and the geographical information (altitude, presence / absence of obstacles, etc.) within the communicable range Ra. Information) is included. The range of positions where the second relay device 4b can be installed may be stored in the storage unit 12 in advance, or may be input by the user before installing the second relay device 4b.
　また、環境情報取得部１３２は、第２中継装置４ｂを設置可能な位置の範囲に加えて、第１中継装置４ａ周辺の気象状況を示す気象情報と、第１中継装置４ａ周辺の地理を示す地理情報との少なくとも一方を含む環境情報を取得してもよい。気象情報は、例えば第１中継装置４ａが設置された第１位置の天気を示す情報（降水量、風速等）である。また、環境情報取得部１３２は、地理情報は、例えば第１中継装置４ａが設置された第１位置の高度である。気象情報及び地理情報は、第１中継装置４ａによって測定されてもよく、第１中継装置４ａを輸送した第１無人輸送装置２ａによって測定されてもよい。 Further, the environmental information acquisition unit 132 shows the weather information indicating the weather condition around the first relay device 4a and the geography around the first relay device 4a, in addition to the range of the positions where the second relay device 4b can be installed. Environmental information including at least one of the geographic information may be acquired. The meteorological information is, for example, information (precipitation, wind speed, etc.) indicating the weather at the first position where the first relay device 4a is installed. Further, in the environmental information acquisition unit 132, the geographic information is, for example, the altitude of the first position where the first relay device 4a is installed. Meteorological information and geographic information may be measured by the first relay device 4a, or may be measured by the first unmanned transportation device 2a that has transported the first relay device 4a.
　位置決定部１３３は、電波情報取得部１３１が取得した電波情報に含まれている第１無線通信信号が到達する距離に基づいて、第２中継装置４ｂを設置するための、第１無線通信信号を受信可能な第２位置を決定する。例えば位置決定部１３３は、環境情報取得部１３２が取得した環境情報に含まれている第２中継装置４ｂを設置可能な位置の範囲の中で、第１中継装置４ａを基準として第１無線通信信号が到達する距離以内の最も遠い位置を、第２位置として決定する。また、位置決定部１３３は、環境情報に含まれている地理情報が所定条件を満たす位置（例えば高度が所定値以上である位置等）の中で、第１中継装置４ａを基準として第１無線通信信号が到達する距離以内の最も遠い位置を、第２位置として決定してもよい。また、位置決定部１３３は、環境情報に含まれている地理情報に応じて、第１無線通信信号が到達する距離を変更してもよい。この場合に、位置決定部１３３は、例えば地理情報が示す高度が高いほど第１無線通信信号が到達する距離を長くし、地理情報が示す高度が低いほど第１無線通信信号が到達する距離を短くする。 The position-fixing unit 133 is a first radio communication signal for installing the second relay device 4b based on the distance reached by the first radio communication signal included in the radio wave information acquired by the radio wave information acquisition unit 131. Determines a second position where the can be received. For example, the position-fixing unit 133 uses the first relay device 4a as a reference in the first wireless communication within the range of the position where the second relay device 4b included in the environmental information acquired by the environmental information acquisition unit 132 can be installed. The farthest position within the reach of the signal is determined as the second position. Further, the position determining unit 133 uses the first relay device 4a as a reference in the position where the geographic information included in the environmental information satisfies the predetermined condition (for example, the position where the altitude is equal to or higher than the predetermined value). The farthest position within the reach of the communication signal may be determined as the second position. Further, the position-fixing unit 133 may change the distance reached by the first radio communication signal according to the geographic information included in the environmental information. In this case, for example, the higher the altitude indicated by the geographic information, the longer the distance reached by the first radio communication signal, and the lower the altitude indicated by the geographic information, the longer the distance reached by the first radio communication signal. shorten.
　また、例えば位置決定部１３３は、第２中継装置４ｂを設置可能な位置の範囲の中で、第１中継装置４ａを基準として第１無線通信信号が到達する距離以内の複数の候補位置を特定し、特定した複数の候補位置を液晶ディスプレイ等の表示部に表示させてもよい。この場合に、位置決定部１３３は、複数の候補位置の中からいずれか１つの候補位置の選択をユーザから受け付け、選択された候補位置を第２位置として決定する。これにより、位置決定部１３３は、第２中継装置４ｂを設置する位置に、ユーザの意向を反映することができる。 Further, for example, the position-determining unit 133 identifies a plurality of candidate positions within a distance that the first wireless communication signal can reach with reference to the first relay device 4a within the range of positions where the second relay device 4b can be installed. Then, the specified plurality of candidate positions may be displayed on a display unit such as a liquid crystal display. In this case, the position-determining unit 133 accepts the selection of any one of the candidate positions from the plurality of candidate positions from the user, and determines the selected candidate position as the second position. As a result, the position-determining unit 133 can reflect the intention of the user at the position where the second relay device 4b is installed.
　また、位置決定部１３３は、第１無線通信信号が到達する距離に加えて、電波情報取得部１３１が取得した電波情報に含まれている品質情報に基づいて、第２位置を決定してもよい。この場合に、位置決定部１３３は、品質情報が所定条件を満たす場合に（例えば、信号対雑音比が所定値以下である場合）に、そうでない場合に比べて第１中継装置４ａの近くに第２位置を設定する。信号対雑音比が低いと通信可能距離が短くなる傾向にあるため、通信網構築装置１は、第１中継装置４ａが受信した電波の品質情報を考慮して、通信がより安定する位置に第２中継装置４ｂを設置できる。また、複数の第１中継装置４ａが既に設置されている場合に、位置決定部１３３は、複数の第１中継装置４ａのうち、品質情報が示す信号対雑音比が最も高い第１中継装置４ａの通信可能範囲内に第２位置を設定してもよい。 Further, even if the position determination unit 133 determines the second position based on the quality information included in the radio wave information acquired by the radio wave information acquisition unit 131 in addition to the distance reached by the first radio communication signal. Good. In this case, when the quality information satisfies the predetermined condition (for example, when the signal-to-noise ratio is equal to or less than the predetermined value), the position-determining unit 133 is closer to the first relay device 4a than when it is not. Set the second position. When the signal-to-noise ratio is low, the communicable distance tends to be short, so the communication network construction device 1 is placed in a position where communication is more stable in consideration of the quality information of the radio waves received by the first relay device 4a. 2 The relay device 4b can be installed. Further, when a plurality of first relay devices 4a are already installed, the position-determining unit 133 uses the first relay device 4a having the highest signal-to-noise ratio indicated by the quality information among the plurality of first relay devices 4a. The second position may be set within the communicable range of.
　また、位置決定部１３３は、第１無線通信信号が到達する距離に加えて、環境情報取得部１３２が取得した気象情報及び地理情報の少なくとも一方に基づいて、第２位置を決定してもよい。この場合に、位置決定部１３３は、気象情報が所定条件を満たす場合に（例えば、降水量が所定値以上である場合）に、そうでない場合に比べて第１中継装置４ａの近くに第２位置を設定する。雨が降っていると通信可能距離が短くなる傾向にあるため、通信網構築装置１は、第１中継装置４ａが設置された位置の気象情報を考慮して、通信がより安定する位置に第２中継装置４ｂを設置できる。また、位置決定部１３３は、気象情報が所定条件（例えば、風速が所定値以上である場合）を満たす場合に、第２中継装置４ｂを設置しないことを決定してもよい。また、複数の第１中継装置４ａが既に設置されている場合に、位置決定部１３３は、複数の第１中継装置４ａのうち、気象情報が示す天気が最も良い（例えば、降水量が最も小さい）第１中継装置４ａの通信可能範囲内に第２位置を設定してもよい。 Further, the position-fixing unit 133 may determine the second position based on at least one of the weather information and the geographic information acquired by the environmental information acquisition unit 132 in addition to the distance reached by the first radio communication signal. .. In this case, when the meteorological information satisfies the predetermined condition (for example, when the precipitation amount is equal to or higher than the predetermined value), the position-fixing unit 133 is closer to the first relay device 4a than in the case where the weather information does not satisfy the predetermined value. Set the position. Since the communicable distance tends to be shortened when it is raining, the communication network construction device 1 is placed in a position where communication is more stable in consideration of the weather information at the position where the first relay device 4a is installed. 2 The relay device 4b can be installed. Further, the position-fixing unit 133 may decide not to install the second relay device 4b when the weather information satisfies a predetermined condition (for example, when the wind speed is equal to or higher than a predetermined value). Further, when a plurality of first relay devices 4a are already installed, the position-fixing unit 133 has the best weather indicated by the weather information among the plurality of first relay devices 4a (for example, the lowest precipitation amount). ) The second position may be set within the communicable range of the first relay device 4a.
　また、位置決定部１３３は、地理情報が所定条件を満たす場合に（例えば、高度が所定値以上である場合）に、そうでない場合に比べて第１中継装置４ａの遠くに第２位置を設定する。高度が高いほど通信可能距離が長くなる傾向にあるため、通信網構築装置１は、第１中継装置４ａが設置された位置の地理情報を考慮して、第１中継装置４ａからより離れた位置に第２中継装置４ｂを設置できる。また、複数の第１中継装置４ａが既に設置されている場合に、位置決定部１３３は、複数の第１中継装置４ａのうち、地理情報が示す高度が最も高い第１中継装置４ａの通信可能範囲内に第２位置を設定してもよい。 Further, when the geographic information satisfies the predetermined condition (for example, when the altitude is equal to or higher than the predetermined value), the position determining unit 133 sets the second position farther from the first relay device 4a than in the case where the altitude does not satisfy the predetermined value. To do. Since the higher the altitude, the longer the communicable distance tends to be, the communication network construction device 1 is located farther from the first relay device 4a in consideration of the geographical information of the position where the first relay device 4a is installed. The second relay device 4b can be installed in. Further, when a plurality of first relay devices 4a are already installed, the position-fixing unit 133 can communicate with the first relay device 4a having the highest altitude indicated by the geographical information among the plurality of first relay devices 4a. The second position may be set within the range.
　第１中継装置４ａが電池によって作動する場合に、位置決定部１３３は、第１中継装置４ａの電池残量に基づいて第２位置を決定してもよい。この場合に、位置決定部１３３は、第１中継装置４ａの電池残量を取得し、取得した電池残量が所定条件を満たす場合に（例えば、電池残量が所定値以下である場合）に、そうでない場合に比べて第１中継装置４ａの近くに第２位置を設定する。これにより、通信網構築装置１は、第１中継装置４ａの電池が切れた場合であっても、第２中継装置４ｂを用いて通信できるように、通信網を構築できる。 When the first relay device 4a is operated by a battery, the position determining unit 133 may determine the second position based on the remaining battery level of the first relay device 4a. In this case, the position-determining unit 133 acquires the remaining battery level of the first relay device 4a, and when the acquired remaining battery level satisfies a predetermined condition (for example, when the remaining battery level is equal to or less than a predetermined value). , The second position is set closer to the first relay device 4a as compared with the case where it is not. As a result, the communication network construction device 1 can construct a communication network so that communication can be performed using the second relay device 4b even when the battery of the first relay device 4a runs out.
　通知部１３４は、拠点に待機している無人輸送装置２のうち、第２中継装置４ｂを輸送する第２無人輸送装置２ｂに、位置決定部１３３が決定した第２位置を通知する。また、通知部１３４は、第１無人輸送装置２ａに第２位置を通知してもよい。この場合に、第１無人輸送装置２ａは、第２無人輸送装置２ｂとして機能する。 The notification unit 134 notifies the second unmanned transportation device 2b that transports the second relay device 4b of the unmanned transportation devices 2 waiting at the base of the second position determined by the position-determining unit 133. Further, the notification unit 134 may notify the first unmanned transportation device 2a of the second position. In this case, the first unmanned transport device 2a functions as the second unmanned transport device 2b.
　第２無人輸送装置２ｂは、通信網構築装置１から第２位置の通知を受けた場合に、駆動部を用いて第２中継装置４ｂを保持する。また、第２無人輸送装置２ｂは、第２位置の通知を受ける前に、第２中継装置４ｂを保持した状態で待機していてもよい。第２無人輸送装置２ｂは、第２中継装置４ｂを保持した状態で、拠点から第２位置へ移動する。第２無人輸送装置２ｂが第２位置へ移動する際に、通信網構築装置１は、第２無人輸送装置２ｂの移動を制御する制御信号を、基地局３及び第１中継装置４ａを介して第２無人輸送装置２ｂへ逐次送信する。また、通信網構築装置１は、制御信号を、基地局３と、第１中継装置４ａと、第２無人輸送装置２ｂが保持している第２中継装置４ｂとを介して、第２無人輸送装置２ｂへ送信してもよい。また、第２無人輸送装置２ｂは、通信網構築装置１からの制御信号を用いず、自律的に第２位置へ移動してもよい。 The second unmanned transport device 2b uses the drive unit to hold the second relay device 4b when the communication network construction device 1 notifies the second position. Further, the second unmanned transport device 2b may stand by while holding the second relay device 4b before receiving the notification of the second position. The second unmanned transportation device 2b moves from the base to the second position while holding the second relay device 4b. When the second unmanned transport device 2b moves to the second position, the communication network construction device 1 transmits a control signal for controlling the movement of the second unmanned transport device 2b via the base station 3 and the first relay device 4a. It is sequentially transmitted to the second unmanned transportation device 2b. Further, the communication network construction device 1 transports the control signal via the base station 3, the first relay device 4a, and the second relay device 4b held by the second unmanned transport device 2b. It may be transmitted to the device 2b. Further, the second unmanned transport device 2b may autonomously move to the second position without using the control signal from the communication network construction device 1.
　第２無人輸送装置２ｂは、第２位置に到達した後に、駆動部を用いて第２中継装置４ｂを分離することによって、第２中継装置４ｂを第２位置に設置する。そして第２無人輸送装置２ｂは、第２位置から拠点に戻る。 The second unmanned transport device 2b installs the second relay device 4b at the second position by separating the second relay device 4b using the drive unit after reaching the second position. Then, the second unmanned transportation device 2b returns from the second position to the base.
　第２中継装置４ｂは、第２位置に設置された後に、第１中継装置４ａが発した無線通信信号を通信端末５に対して中継するとともに、通信端末５が発した無線通信信号を第１中継装置４ａに対して中継する。第１中継装置４ａと第２中継装置４ｂとは、指向性アンテナを用いて１対１で無線通信信号を授受してもよく、無指向性アンテナを用いて１対多又は多対多で無線通信信号を授受してもよい。これにより、第２中継装置４ｂが設置された第２位置を基準として、第２中継装置４ｂが発する第２無線通信信号が到達する距離の範囲内にある通信端末５は、基地局３、第１中継装置４ａ及び第２中継装置４ｂを介して、ネットワークＮとの間で通信可能になる。 After the second relay device 4b is installed at the second position, the second relay device 4a relays the wireless communication signal emitted by the first relay device 4a to the communication terminal 5, and the wireless communication signal emitted by the communication terminal 5 is first. It relays to the relay device 4a. The first relay device 4a and the second relay device 4b may send and receive wireless communication signals on a one-to-one basis using a directional antenna, and may use an omnidirectional antenna to wirelessly transmit one-to-many or many-to-many. Communication signals may be sent and received. As a result, the communication terminals 5 within the range of the second radio communication signal emitted by the second relay device 4b with reference to the second position where the second relay device 4b is installed are the base stations 3 and the second. Communication with the network N becomes possible via the first relay device 4a and the second relay device 4b.
　通信網構築システムＳは、第１無人輸送装置２ａが第１中継装置４ａを輸送及び設置することと、第２無人輸送装置２ｂが第２中継装置４ｂを輸送及び設置することとを、同時に、すなわち並行して行ってもよい。この場合に、通信網構築装置１は、第１無人輸送装置２ａの移動を制御する制御信号を、基地局３を介して、第１無人輸送装置２ａへ送信する。これと同時に、通信網構築装置１は、第２無人輸送装置２ｂの移動を制御する制御信号を、基地局３と、第１無人輸送装置２ａが保持している第１中継装置４ａとを介して、第２無人輸送装置２ｂへ送信する。通信網構築システムＳは、第１中継装置４ａの設置が完了することを待たずに第２中継装置４ｂの輸送を開始することができるため、複数の中継装置４の設置を素早く進めることができる。 In the communication network construction system S, the first unmanned transportation device 2a transports and installs the first relay device 4a, and the second unmanned transportation device 2b transports and installs the second relay device 4b at the same time. That is, they may be performed in parallel. In this case, the communication network construction device 1 transmits a control signal for controlling the movement of the first unmanned transportation device 2a to the first unmanned transportation device 2a via the base station 3. At the same time, the communication network construction device 1 transmits a control signal for controlling the movement of the second unmanned transport device 2b via the base station 3 and the first relay device 4a held by the first unmanned transport device 2a. Then, it is transmitted to the second unmanned transportation device 2b. Since the communication network construction system S can start the transportation of the second relay device 4b without waiting for the installation of the first relay device 4a to be completed, the installation of the plurality of relay devices 4 can be quickly advanced. ..
　第２無人輸送装置２ｂが第２中継装置４ｂを設置した後、第１中継装置４ａ及び第２中継装置４ｂは、それぞれ基地局３が基地局無線通信信号を発してから所定の期間内（例えば１ミリ秒以内）に、受信した電波の強度を測定することによって、第１中継装置４ａ及び第２中継装置４ｂの通信状態を特定してもよい。第１中継装置４ａ及び第２中継装置４ｂは、特定した通信状態を、通信網構築装置１へ送信する。通信網構築装置１において、電波情報取得部１３１は、第１中継装置４ａ及び第２中継装置４ｂが特定した通信状態を取得し、記憶部１２に記憶させる。さらに通信網構築装置１は、図７を用いて後述するように第１中継装置４ａ及び第２中継装置４ｂの通信状態が所定の条件を満たす場合に、設置された第１中継装置４ａ及び第２中継装置４ｂを別の位置に移動させてもよい。 After the second unmanned transport device 2b installs the second relay device 4b, the first relay device 4a and the second relay device 4b each within a predetermined period (for example, after the base station 3 emits a base station radio communication signal). The communication state of the first relay device 4a and the second relay device 4b may be specified by measuring the intensity of the received radio wave within 1 millisecond). The first relay device 4a and the second relay device 4b transmit the specified communication state to the communication network construction device 1. In the communication network construction device 1, the radio wave information acquisition unit 131 acquires the communication state specified by the first relay device 4a and the second relay device 4b and stores it in the storage unit 12. Further, the communication network construction device 1 is installed as a first relay device 4a and a first relay device 4a when the communication states of the first relay device 4a and the second relay device 4b satisfy a predetermined condition, as will be described later with reference to FIG. 2 The relay device 4b may be moved to another position.
（３）通信網の構築
　通信網構築システムＳは、所定の通信網が構築されるまで、無人輸送装置２が中継装置４を輸送及び設置することを繰り返す。図５は、複数の中継装置４の設置が完了した状態を説明するための模式図である。図５は、３つの中継装置４が設置された例を表しているが、２つ以上の任意の数の中継装置４が設置されてもよい。図５は、第１中継装置４ａ及び第２中継装置４ｂが設置された後に、第３無人輸送装置２ｃが第３中継装置４ｃを第３位置に輸送及び設置した状態を表している。 (3) Construction of Communication Network In the communication network construction system S, the unmanned transportation device 2 repeatedly transports and installs the relay device 4 until a predetermined communication network is constructed. FIG. 5 is a schematic diagram for explaining a state in which the installation of the plurality of relay devices 4 is completed. FIG. 5 shows an example in which three relay devices 4 are installed, but an arbitrary number of two or more relay devices 4 may be installed. FIG. 5 shows a state in which the third unmanned transport device 2c transports and installs the third relay device 4c to the third position after the first relay device 4a and the second relay device 4b are installed.
　図５は、通信可能範囲Ｒ及び通信可能範囲Ｒａに加えて、第２中継装置４ｂが発する第２無線通信信号が到達する距離を第２中継装置４ｂの通信可能範囲Ｒｂとして表しており、第３中継装置４ｃが発する第３無線通信信号が到達する距離を第３中継装置４ｃの通信可能範囲Ｒｃとして表している。これにより、通信端末５は、基地局３、第１中継装置４ａ、第２中継装置４ｂ及び第３中継装置４ｃのうち少なくとも１つを介して、ネットワークＮとの間で通信可能になる。 In FIG. 5, in addition to the communicable range R and the communicable range Ra, the distance reached by the second radio communication signal emitted by the second relay device 4b is represented as the communicable range Rb of the second relay device 4b. 3 The distance reached by the third radio communication signal emitted by the relay device 4c is represented as the communicable range Rc of the third relay device 4c. As a result, the communication terminal 5 can communicate with the network N via at least one of the base station 3, the first relay device 4a, the second relay device 4b, and the third relay device 4c.
　第２中継装置４ｂと第３中継装置４ｃとは、第１中継装置４ａと第２中継装置４ｂとが第１無線通信信号を送受信するための第１通信方式とは異なる第２通信方式で、第２無線通信信号を送受信してもよい。例えば第１中継装置４ａと第２中継装置４ｂとは５．７ＧＨｚ帯、４．９ＧＨｚ帯、Ｓｕｂ－Ｇｉｇａ帯（すなわち１ＧＨｚ以下の周波数帯）のうち１つの周波数帯を用いる第１通信方式で通信するのに対して、第２中継装置４ｂと第３中継装置４ｃとは５．７ＧＨｚ帯、４．９ＧＨｚ帯、Ｓｕｂ－Ｇｉｇａ帯のうち別の１つの周波数帯を用いる第２通信方式で通信する。また、第１通信方式と第２通信方式は同一であってもよい。これにより、通信網構築システムＳは、複数の周波数帯の通信方式を組み合わせて通信網を柔軟に構築することができる。 The second relay device 4b and the third relay device 4c are second communication methods different from the first communication method for the first relay device 4a and the second relay device 4b to transmit and receive the first wireless communication signal. The second wireless communication signal may be transmitted and received. For example, the first relay device 4a and the second relay device 4b communicate with each other by the first communication method using one of the 5.7 GHz band, the 4.9 GHz band, and the Sub-Giga band (that is, the frequency band of 1 GHz or less). On the other hand, the second relay device 4b and the third relay device 4c communicate with each other by the second communication method using another frequency band of the 5.7 GHz band, the 4.9 GHz band, and the Sub-Giga band. .. Further, the first communication method and the second communication method may be the same. As a result, the communication network construction system S can flexibly construct a communication network by combining communication methods of a plurality of frequency bands.
　通信網構築システムＳは、第２無人輸送装置２ｂが第２中継装置４ｂを輸送及び設置することと、第３無人輸送装置２ｃが第３中継装置４ｃを輸送及び設置することとを、同時に、すなわち並行して行ってもよい。この場合に、通信網構築装置１は、第２無人輸送装置２ｂの移動を制御する制御信号を、基地局３及び第１中継装置４ａを介して、第２無人輸送装置２ｂへ送信する。これと同時に、通信網構築装置１は、第３無人輸送装置２ｃの移動を制御する制御信号を、基地局３と、第１中継装置４ａと、第２無人輸送装置２ｂが保持している第２中継装置４ｂとを介して、第３無人輸送装置２ｃへ送信する。通信網構築システムＳは、第２中継装置４ｂの設置が完了することを待たずに第３中継装置４ｃの輸送を開始することができるため、複数の中継装置４の設置を素早く進めることができる。同様に、通信網構築システムＳは、３つ以上の中継装置４の輸送及び設置を同時に行ってもよい。 In the communication network construction system S, the second unmanned transportation device 2b transports and installs the second relay device 4b, and the third unmanned transportation device 2c transports and installs the third relay device 4c at the same time. That is, they may be performed in parallel. In this case, the communication network construction device 1 transmits a control signal for controlling the movement of the second unmanned transport device 2b to the second unmanned transport device 2b via the base station 3 and the first relay device 4a. At the same time, the communication network construction device 1 holds a control signal for controlling the movement of the third unmanned transport device 2c by the base station 3, the first relay device 4a, and the second unmanned transport device 2b. It is transmitted to the third unmanned transport device 2c via the two relay device 4b. Since the communication network construction system S can start the transportation of the third relay device 4c without waiting for the installation of the second relay device 4b to be completed, the installation of the plurality of relay devices 4 can be quickly advanced. .. Similarly, the communication network construction system S may simultaneously transport and install three or more relay devices 4.
［通信網構築方法の付加機能］
　図６（ａ）、図６（ｂ）は、複数の中継装置４の無線通信における接続関係を説明するための模式図である。図６（ａ）は、複数の中継装置４が直線状（直列）に無線接続されている状態を表している。この場合に、１つの中継装置４は、１つ又は２つの中継装置４に無線接続されている。図６（ｂ）は、複数の中継装置４がメッシュ状（網状）に無線接続されている状態を表している。この場合に、１つの中継装置４は、１つ又は複数の中継装置４に無線接続されている。通信網構築システムＳは、直線状及びメッシュ状のどちらの接続関係においても、無人輸送装置２を用いて中継装置４を設置して通信網を構築できる。また、通信網構築システムＳは、直線状の接続関係と、メッシュ状の接続関係とを組み合わせて通信網を構築してもよい。 [Additional functions of communication network construction method]
6 (a) and 6 (b) are schematic views for explaining the connection relationship of the plurality of relay devices 4 in wireless communication. FIG. 6A shows a state in which a plurality of relay devices 4 are wirelessly connected in a straight line (series). In this case, one relay device 4 is wirelessly connected to one or two relay devices 4. FIG. 6B shows a state in which a plurality of relay devices 4 are wirelessly connected in a mesh shape (net shape). In this case, one relay device 4 is wirelessly connected to one or more relay devices 4. In the communication network construction system S, the relay device 4 can be installed by using the unmanned transportation device 2 to construct the communication network in both the linear and mesh-like connection relationships. Further, the communication network construction system S may construct a communication network by combining a linear connection relationship and a mesh-like connection relationship.
　このように、通信網構築システムＳは、無人輸送装置２を用いて、既設の基地局３の通信可能範囲内に中継装置４を設置し、さらに設置した中継装置４の通信可能範囲内に新たな中継装置４を設置することを繰り返す。これにより、通信網構築システムＳは、基地局３及び中継装置４を介した無線通信の通信可能範囲を容易に拡張できる。 In this way, the communication network construction system S uses the unmanned transportation device 2 to install the relay device 4 within the communicable range of the existing base station 3, and further installs the relay device 4 within the communicable range of the installed relay device 4. Repeatedly installing the relay device 4. As a result, the communication network construction system S can easily extend the communicable range of wireless communication via the base station 3 and the relay device 4.
　中継装置４を設置するために、事前に所定の機関に対する申請が必要な場合がある。そのため、通信網構築システムＳは、中継装置４を設置する前に、申請を行ってもよい。この場合に、通知部１３４は、位置決定部１３３が決定した中継装置４の位置と、中継装置４の電波出力と、中継装置４の運用時間とを含む申請情報を生成し、生成した申請情報を所定の外部装置（例えば所定の機関が管理するサーバ）へ通知する。そして通知部１３４は、外部装置から申請情報が承認されたことを示す情報を受信したことを条件として、中継装置４を輸送する無人輸送装置２に、位置決定部１３３が決定した位置を通知する。これにより、通信網構築システムＳは、事前に申請した情報に沿って、中継装置４を設置することができる。 In order to install the relay device 4, it may be necessary to apply to a designated institution in advance. Therefore, the communication network construction system S may make an application before installing the relay device 4. In this case, the notification unit 134 generates application information including the position of the relay device 4 determined by the position determination unit 133, the radio wave output of the relay device 4, and the operating time of the relay device 4, and the generated application information. Is notified to a predetermined external device (for example, a server managed by a predetermined organization). Then, the notification unit 134 notifies the unmanned transportation device 2 that transports the relay device 4 of the position determined by the position determination unit 133 on condition that the information indicating that the application information has been approved is received from the external device. .. As a result, the communication network construction system S can install the relay device 4 according to the information applied in advance.
　通信網構築システムＳは、基地局３及び複数の中継装置４を用いた通信網に加えて、ＬＴＥ（Long Term Evolution）等の通信事業者が提供する通信回線をバックアップ用途として利用可能にしてもよい。この場合に、複数の中継装置４のうち少なくとも１つは、通信回線を利用するためのＳＩＭ（Subscriber Identity Module）を備える。このような構成により、例えば周辺環境の変化によって基地局３と中継装置４との間、又は中継装置４と中継装置４との間で無線通信信号が授受できなくなった場合であっても、通信網構築システムＳは、ＳＩＭを用いた通信回線を用いて無線通信を継続できるため、通信網の安定性を向上させることができる。 In the communication network construction system S, in addition to the communication network using the base station 3 and the plurality of relay devices 4, the communication line provided by the communication carrier such as LTE (Long Term Evolution) can be used as a backup purpose. Good. In this case, at least one of the plurality of relay devices 4 includes a SIM (Subscriber Identity Module) for using the communication line. With such a configuration, even if a wireless communication signal cannot be exchanged between the base station 3 and the relay device 4 or between the relay device 4 and the relay device 4 due to a change in the surrounding environment, communication is performed. Since the network construction system S can continue wireless communication using a communication line using SIM, the stability of the communication network can be improved.
　通信網構築システムＳにおいて、通信網を構成する複数の中継装置４のうち一部の中継装置４は、人間が操縦する車両又は船舶を用いて輸送及び設置されてもよい。これにより、通信網構築システムＳは、無人輸送装置２を用いて中継装置４を設置することに加えて、人間の作業によって中継装置４を効率的に設置できる。 In the communication network construction system S, some of the relay devices 4 among the plurality of relay devices 4 constituting the communication network may be transported and installed by using a vehicle or a ship operated by a human. As a result, in the communication network construction system S, in addition to installing the relay device 4 using the unmanned transportation device 2, the relay device 4 can be efficiently installed by human work.
　さらに通信網構築装置１は、複数の中継装置４が設置された後に、複数の中継装置４のうち少なくとも１つの中継装置４を、設置された位置から別の位置に移動させてもよい。図７は、設置された中継装置４を移動させる方法を説明するための模式図である。図７は、通信網構築装置１が第１中継装置４ａ及び第２中継装置４ｂを移動させる例を表している。 Further, the communication network construction device 1 may move at least one relay device 4 out of the plurality of relay devices 4 from the installed position to another position after the plurality of relay devices 4 are installed. FIG. 7 is a schematic diagram for explaining a method of moving the installed relay device 4. FIG. 7 shows an example in which the communication network construction device 1 moves the first relay device 4a and the second relay device 4b.
　位置決定部１３３は、設置された中継装置４の移動先位置を決定するための条件が満たされているか否かを判定する。移動先位置を決定するための条件は、例えば、電波情報取得部１３１が取得した第１中継装置４ａ及び第２中継装置４ｂの少なくとも一方における電波の強度が所定値以下であることである。位置決定部１３３は、所定の条件が満たされていると判定した場合に、第１中継装置４ａ及び第２中継装置４ｂの少なくとも一方の移動先位置を決定する。例えば、位置決定部１３３は、基地局無線通信信号が到達する距離の範囲内で、地理情報が示す高度に基づいて、第１位置よりも高い位置に、第１中継装置４ａの移動先位置を決定する。例えば、位置決定部１３３は、第１無線通信信号が到達する距離の範囲内で、地理情報が示す高度に基づいて、第２位置よりも高い位置に、第２中継装置４ｂの移動先位置を決定する。これにより、例えば第１中継装置４ａ及び第２中継装置４ｂを設置した位置の通信状況が悪い場合に、位置決定部１３３は、より高度が高く見通しの良い移動先位置を決定し、通信状況の改善を図ることができる。 The position determining unit 133 determines whether or not the conditions for determining the moving destination position of the installed relay device 4 are satisfied. The condition for determining the moving destination position is, for example, that the intensity of the radio wave in at least one of the first relay device 4a and the second relay device 4b acquired by the radio wave information acquisition unit 131 is a predetermined value or less. When it is determined that the predetermined condition is satisfied, the position-determining unit 133 determines the position of at least one of the first relay device 4a and the second relay device 4b. For example, the position-determining unit 133 sets the destination position of the first relay device 4a at a position higher than the first position based on the altitude indicated by the geographic information within the range of the distance reached by the base station radio communication signal. decide. For example, the position-determining unit 133 sets the destination position of the second relay device 4b at a position higher than the second position based on the altitude indicated by the geographic information within the range of the distance reached by the first radio communication signal. decide. As a result, for example, when the communication status at the position where the first relay device 4a and the second relay device 4b are installed is poor, the position determining unit 133 determines the moving destination position having a higher altitude and better visibility, and the communication status is changed. Improvements can be made.
　通知部１３４は、拠点に待機しているいずれかの無人輸送装置２に、位置決定部１３３が決定した第１中継装置４ａの移動先位置を通知する。無人輸送装置２は、通信網構築装置１から移動先位置の通知を受けた場合に、第１中継装置４ａが設置されている第１位置に移動し、駆動部を用いて第１中継装置４ａを保持する。無人輸送装置２は、第１中継装置４ａを保持した状態で、第１位置から移動先位置へ移動する。無人輸送装置２は、移動先位置に到達した後に、駆動部を用いて第１中継装置４ａを分離することによって、第１中継装置４ａを移動先位置に設置する。 The notification unit 134 notifies any unmanned transportation device 2 waiting at the base of the movement destination position of the first relay device 4a determined by the position determination unit 133. When the unmanned transport device 2 receives the notification of the destination position from the communication network construction device 1, the unmanned transport device 2 moves to the first position where the first relay device 4a is installed, and uses the drive unit to move to the first relay device 4a. To hold. The unmanned transport device 2 moves from the first position to the destination position while holding the first relay device 4a. The unmanned transport device 2 installs the first relay device 4a at the destination position by separating the first relay device 4a using the drive unit after reaching the destination position.
　同様に、通知部１３４は、拠点に待機しているいずれかの無人輸送装置２に、位置決定部１３３が決定した第２中継装置４ｂの移動先位置を通知する。無人輸送装置２は、通信網構築装置１から移動先位置の通知を受けた場合に、第２中継装置４ｂが設置されている第２位置に移動し、駆動部を用いて第２中継装置４ｂを保持する。無人輸送装置２は、第２中継装置４ｂを保持した状態で、第２位置から移動先位置へ移動する。無人輸送装置２は、移動先位置に到達した後に、駆動部を用いて第２中継装置４ｂを分離することによって、第２中継装置４ｂを移動先位置に設置する。 Similarly, the notification unit 134 notifies any unmanned transportation device 2 waiting at the base of the destination position of the second relay device 4b determined by the position determination unit 133. When the unmanned transport device 2 receives the notification of the destination position from the communication network construction device 1, the unmanned transport device 2 moves to the second position where the second relay device 4b is installed, and uses the drive unit to move to the second relay device 4b. To hold. The unmanned transport device 2 moves from the second position to the destination position while holding the second relay device 4b. The unmanned transport device 2 installs the second relay device 4b at the destination position by separating the second relay device 4b using the drive unit after reaching the destination position.
　さらに通信網構築装置１は、移動先位置に設置された中継装置４を、さらに別の移動先位置に移動させてもよい。このように、通信網構築システムＳは、設置された中継装置４を無人輸送装置２によって移動させることによって、通信網を状況に応じて柔軟に変更できる。 Further, the communication network construction device 1 may move the relay device 4 installed at the destination position to another destination position. In this way, the communication network construction system S can flexibly change the communication network according to the situation by moving the installed relay device 4 by the unmanned transportation device 2.
［通信網構築方法のシーケンス］
　図８は、本実施形態に係る通信網構築システムＳが実行する通信網構築方法のシーケンス図である。通信網構築装置１において、電波情報取得部１３１は、基地局３が送受信する電波に関する電波情報を、記憶部１２又は基地局３から取得する。また、環境情報取得部１３２は、第１中継装置４ａを設置する予定の位置の環境に関する環境情報を、記憶部１２から取得する（Ｓ１１）。 [Sequence of communication network construction method]
FIG. 8 is a sequence diagram of a communication network construction method executed by the communication network construction system S according to the present embodiment. In the communication network construction device 1, the radio wave information acquisition unit 131 acquires radio wave information related to radio waves transmitted and received by the base station 3 from the storage unit 12 or the base station 3. Further, the environmental information acquisition unit 132 acquires the environmental information regarding the environment at the position where the first relay device 4a is to be installed from the storage unit 12 (S11).
　位置決定部１３３は、電波情報取得部１３１が取得した電波情報に含まれている基地局無線通信信号が到達する距離に基づいて、基地局無線通信信号を中継する第１中継装置４ａを設置するための、基地局無線通信信号を受信可能な第１位置を決定する（Ｓ１２）。通知部１３４は、拠点に待機している無人輸送装置２のうち、第１中継装置４ａを輸送する第１無人輸送装置２ａに、位置決定部１３３が決定した第１位置を通知する（Ｓ１３）。 The position determination unit 133 installs a first relay device 4a that relays the base station radio communication signal based on the distance reached by the base station radio communication signal included in the radio wave information acquired by the radio wave information acquisition unit 131. The first position where the base station radio communication signal can be received is determined (S12). The notification unit 134 notifies the first unmanned transportation device 2a that transports the first relay device 4a of the unmanned transportation devices 2 waiting at the base of the first position determined by the position-determining unit 133 (S13). ..
　第１無人輸送装置２ａは、通信網構築装置１から第１位置の通知を受けた場合に、駆動部を用いて第１中継装置４ａを保持する。第１無人輸送装置２ａは、第１中継装置４ａを保持した状態で、拠点から第１位置へ移動する。第１無人輸送装置２ａは、第１位置に到達した後に、駆動部を用いて第１中継装置４ａを分離することによって、第１中継装置４ａを第１位置に設置する（Ｓ１４）。そして第１無人輸送装置２ａは、第１位置から拠点に戻る。 The first unmanned transportation device 2a holds the first relay device 4a by using the drive unit when the communication network construction device 1 notifies the first position. The first unmanned transportation device 2a moves from the base to the first position while holding the first relay device 4a. After reaching the first position, the first unmanned transport device 2a installs the first relay device 4a in the first position by separating the first relay device 4a using a drive unit (S14). Then, the first unmanned transportation device 2a returns from the first position to the base.
　第１無人輸送装置２ａが第１中継装置４ａを設置した後に、通信網構築装置１において、電波情報取得部１３１は、第１中継装置４ａが送受信する電波に関する電波情報を、記憶部１２又は第１中継装置４ａから取得する。また、環境情報取得部１３２は、第２中継装置４ｂを設置する予定の位置の環境に関する環境情報を、記憶部１２から取得する（Ｓ１５）。 After the first unmanned transportation device 2a installs the first relay device 4a, in the communication network construction device 1, the radio wave information acquisition unit 131 stores radio wave information related to the radio waves transmitted and received by the first relay device 4a in the storage unit 12 or the first. 1 Obtained from the relay device 4a. Further, the environmental information acquisition unit 132 acquires the environmental information regarding the environment at the position where the second relay device 4b is to be installed from the storage unit 12 (S15).
　位置決定部１３３は、電波情報取得部１３１が取得した電波情報に含まれている第１無線通信信号が到達する距離に基づいて、第２中継装置４ｂを設置するための、第１無線通信信号を受信可能な第２位置を決定する（Ｓ１６）。通知部１３４は、拠点に待機している無人輸送装置２のうち、第２中継装置４ｂを輸送する第２無人輸送装置２ｂに、位置決定部１３３が決定した第２位置を通知する（Ｓ１７）。 The position-fixing unit 133 is a first radio communication signal for installing the second relay device 4b based on the distance reached by the first radio communication signal included in the radio wave information acquired by the radio wave information acquisition unit 131. Is determined (S16). The notification unit 134 notifies the second unmanned transportation device 2b that transports the second relay device 4b of the unmanned transportation devices 2 waiting at the base of the second position determined by the position-determining unit 133 (S17). ..
　第２無人輸送装置２ｂは、通信網構築装置１から第２位置の通知を受けた場合に、駆動部を用いて第２中継装置４ｂを保持する。第２無人輸送装置２ｂは、第２中継装置４ｂを保持した状態で、拠点から第２位置へ移動する。第２無人輸送装置２ｂは、第２位置に到達した後に、駆動部を用いて第２中継装置４ｂを分離することによって、第２中継装置４ｂを第２位置に設置する（Ｓ１８）。そして第２無人輸送装置２ｂは、第２位置から拠点に戻る。 The second unmanned transport device 2b uses the drive unit to hold the second relay device 4b when the communication network construction device 1 notifies the second position. The second unmanned transportation device 2b moves from the base to the second position while holding the second relay device 4b. After reaching the second position, the second unmanned transport device 2b installs the second relay device 4b at the second position by separating the second relay device 4b using the drive unit (S18). Then, the second unmanned transportation device 2b returns from the second position to the base.
　その後、通信網構築装置１は、無人輸送装置２を用いて、第１中継装置４ａ及び第２中継装置４ｂの少なくとも一方を、設置された位置から別の位置に移動させてもよい。さらに、通信網構築装置１は、無人輸送装置２を用いて、別の中継装置４（例えば第３中継装置４ｃ）を輸送及び設置してもよい。 After that, the communication network construction device 1 may use the unmanned transportation device 2 to move at least one of the first relay device 4a and the second relay device 4b from the installed position to another position. Further, the communication network construction device 1 may transport and install another relay device 4 (for example, a third relay device 4c) by using the unmanned transportation device 2.
［実施形態の効果］
　本実施形態に係る通信網構築システムＳによれば、通信網構築装置１は、第１無人輸送装置２ａによって、既設の基地局３の通信可能範囲内の第１位置に第１中継装置４ａを設置する。また、通信網構築装置１は、第２無人輸送装置２ｂによって、第１中継装置４ａの通信可能範囲内の第２位置に第２中継装置４ｂを設置する。これにより、通信網構築システムＳは、既設の基地局３の通信可能範囲外にも無人輸送装置２を用いて次々と中継装置４を設置できるため、基地局３及び中継装置４を介した無線通信の通信可能範囲を容易に拡張できる。 [Effect of Embodiment]
According to the communication network construction system S according to the present embodiment, the communication network construction device 1 uses the first unmanned transportation device 2a to place the first relay device 4a at the first position within the communicable range of the existing base station 3. Install. Further, the communication network construction device 1 installs the second relay device 4b at the second position within the communicable range of the first relay device 4a by the second unmanned transportation device 2b. As a result, the communication network construction system S can install the relay device 4 one after another by using the unmanned transport device 2 outside the communicable range of the existing base station 3, so that the radio can be installed via the base station 3 and the relay device 4. The communication range of communication can be easily expanded.
　以上、本発明を実施の形態を用いて説明したが、本発明の技術的範囲は上記実施の形態に記載の範囲には限定されず、その要旨の範囲内で種々の変形及び変更が可能である。例えば、装置の分散・統合の具体的な実施の形態は、以上の実施の形態に限られず、その全部又は一部について、任意の単位で機能的又は物理的に分散・統合して構成することができる。また、複数の実施の形態の任意の組み合わせによって生じる新たな実施の形態も、本発明の実施の形態に含まれる。組み合わせによって生じる新たな実施の形態の効果は、もとの実施の形態の効果を合わせ持つ。 Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes can be made within the scope of the gist thereof. is there. For example, the specific embodiment of the distribution / integration of the device is not limited to the above embodiment, and all or a part thereof may be functionally or physically distributed / integrated in any unit. Can be done. Also included in the embodiments of the present invention are new embodiments resulting from any combination of the plurality of embodiments. The effect of the new embodiment produced by the combination has the effect of the original embodiment together.
　通信網構築装置１及び無人輸送装置２のプロセッサは、図８に示す通信網構築方法に含まれる各ステップ（工程）の主体となる。すなわち、通信網構築装置１及び無人輸送装置２のプロセッサは、図８に示す通信網構築方法を実行するためのプログラムを記憶部から読み出し、該プログラムを実行して通信網構築システムＳの各部を制御することによって、図８に示す通信網構築方法を実行する。図８に示す通信網構築方法に含まれるステップは一部省略されてもよく、ステップ間の順番が変更されてもよく、複数のステップが並行して行われてもよい。 The processors of the communication network construction device 1 and the unmanned transportation device 2 are the main components of each step included in the communication network construction method shown in FIG. That is, the processors of the communication network construction device 1 and the unmanned transportation device 2 read a program for executing the communication network construction method shown in FIG. 8 from the storage unit, execute the program, and execute each part of the communication network construction system S. By controlling, the communication network construction method shown in FIG. 8 is executed. Some of the steps included in the communication network construction method shown in FIG. 8 may be omitted, the order between the steps may be changed, and a plurality of steps may be performed in parallel.
Ｓ　通信網構築システム
１　通信網構築装置
１３　制御部
１３１　電波情報取得部
１３２　環境情報取得部
１３３　位置決定部
１３４　通知部
２　無人輸送装置
２ａ　第１無人輸送装置
２ｂ　第２無人輸送装置
２ｃ　第３無人輸送装置
３　基地局
４　中継装置
４ａ　第１中継装置
４ｂ　第２中継装置
４ｃ　第３中継装置 S Communication network construction system 1 Communication network construction device 13 Control unit 131 Radio wave information acquisition unit 132 Environmental information acquisition unit 133 Positioning unit 134 Notification unit 2 Unmanned transportation device 2a 1st unmanned transportation device 2b 2nd unmanned transportation device 2c 3rd unmanned Transport device 3 Base station 4 Relay device 4a 1st relay device 4b 2nd relay device 4c 3rd relay device

Claims (9)

  1. 　第１無人輸送装置が、既設の基地局が発する基地局無線通信信号を中継する第１中継装置を輸送することによって、前記基地局無線通信信号を受信可能な第１位置に前記第１中継装置を設置するステップと、
    　前記第１中継装置を設置するステップの後に又は同時に、第２無人輸送装置が、前記第１中継装置が発する第１無線通信信号を中継する第２中継装置を輸送することによって、前記第１無線通信信号を受信可能な第２位置に前記第２中継装置を設置するステップと、
    　を有する、通信網構築方法。     The first unmanned transport device transports the first relay device that relays the base station radio communication signal emitted by the existing base station, so that the first relay device can receive the base station radio communication signal at the first position. Steps to install and
    After or at the same time as the step of installing the first relay device, the second unmanned transport device transports the second relay device that relays the first radio communication signal emitted by the first relay device, thereby carrying out the first radio. The step of installing the second relay device at the second position where the communication signal can be received, and
    A communication network construction method.
  2. 　前記第１中継装置を設置するステップの前に、情報処理装置が、前記第１中継装置を設置する前記第１位置を決定するステップと、
    　前記第２中継装置を設置するステップの前に、前記情報処理装置が、前記第２中継装置を設置する前記第２位置を決定するステップと、をさらに有する、
    　請求項１に記載の通信網構築方法。     Prior to the step of installing the first relay device, the information processing device determines the first position in which the first relay device is installed.
    Prior to the step of installing the second relay device, the information processing device further includes a step of determining the second position where the second relay device is installed.
    The communication network construction method according to claim 1.
  3. 　第３無人輸送装置が、前記第２中継装置が発する第２無線通信信号を中継する第３中継装置を輸送することによって、前記第２無線通信信号を受信可能な第３位置に、前記第３中継装置を設置するステップをさらに有し、
    　前記第２中継装置と前記第３中継装置とは、前記第１中継装置と前記第２中継装置とが前記第１無線通信信号を送受信するための第１通信方式とは異なる第２通信方式で、前記第２無線通信信号を送受信する、
    　請求項１又は２に記載の通信網構築方法。     The third unmanned transport device transports the third relay device that relays the second radio communication signal emitted by the second relay device to a third position where the second radio communication signal can be received. It also has a step to install a relay device,
    The second relay device and the third relay device have a second communication method different from the first communication method for transmitting and receiving the first wireless communication signal between the first relay device and the second relay device. , Sending and receiving the second wireless communication signal,
    The communication network construction method according to claim 1 or 2.
  4. 　前記第２中継装置を設置するステップにおいて、前記第１無人輸送装置は、前記第２無人輸送装置として前記第２中継装置を設置する、
    　請求項１から３のいずれか一項に記載の通信網構築方法。     In the step of installing the second relay device, the first unmanned transport device installs the second relay device as the second unmanned transport device.
    The communication network construction method according to any one of claims 1 to 3.
  5. 　前記第２中継装置を設置するステップの後に、無人輸送装置が、前記第１中継装置及び前記第２中継装置の少なくとも一方を、設置された位置から別の位置に移動させるステップをさらに有する、
    　請求項１から４のいずれか一項に記載の通信網構築方法。     After the step of installing the second relay device, the unmanned transport device further has a step of moving at least one of the first relay device and the second relay device from the installed position to another position.
    The communication network construction method according to any one of claims 1 to 4.
  6. 　前記第２中継装置を設置するステップの後に、前記基地局が前記基地局無線通信信号を発してから所定の期間内に、前記第２中継装置が受信した電波の強度を測定することによって、前記第２中継装置における通信状態を特定するステップをさらに有する、
    　請求項１から５のいずれか一項に記載の通信網構築方法。     After the step of installing the second relay device, the strength of the radio wave received by the second relay device is measured within a predetermined period after the base station emits the base station radio communication signal. Further having a step of specifying the communication state in the second relay device.
    The communication network construction method according to any one of claims 1 to 5.
  7. 　既設の基地局が発する基地局無線通信信号が到達する距離に基づいて、前記基地局無線通信信号を中継する第１中継装置を設置するための、前記基地局無線通信信号を受信可能な第１位置を決定する位置決定部と、
    　前記第１中継装置を輸送する第１無人輸送装置に前記第１位置を通知する通知部と、
    　を有し、
    　前記位置決定部は、前記第１中継装置が発する第１無線通信信号が到達する距離に基づいて、前記第１無線通信信号を中継する第２中継装置を設置するための、前記第１無線通信信号を受信可能な第２位置を決定し、
    　前記通知部は、前記第２中継装置を輸送する第２無人輸送装置に前記第２位置を通知する、通信網構築装置。     A first capable of receiving the base station radio communication signal for installing a first relay device for relaying the base station radio communication signal based on the reach of the base station radio communication signal emitted by an existing base station. The position determination unit that determines the position and the position determination unit
    A notification unit that notifies the first unmanned transport device that transports the first relay device of the first position, and a notification unit.
    Have,
    The position-fixing unit determines the first wireless communication for installing a second relay device that relays the first wireless communication signal based on the distance reached by the first wireless communication signal emitted by the first relay device. Determine the second position where the signal can be received,
    The notification unit is a communication network construction device that notifies the second unmanned transportation device that transports the second relay device of the second position.
  8. 　前記第１中継装置又は前記第１無人輸送装置が測定した、前記第１中継装置周辺の気象状況を示す気象情報と、前記第１中継装置周辺の地理を示す地理情報との少なくとも一方を取得する環境情報取得部をさらに有し、
    　前記位置決定部は、前記気象情報及び前記地理情報の少なくとも一方に基づいて前記第２位置を決定する、
    　請求項７に記載の通信網構築装置。     Acquire at least one of the weather information indicating the weather condition around the first relay device and the geographic information indicating the geography around the first relay device measured by the first relay device or the first unmanned transportation device. It also has an environmental information acquisition department,
    The position-fixing unit determines the second position based on at least one of the meteorological information and the geographic information.
    The communication network construction device according to claim 7.
  9. 　前記第１中継装置が受信した電波の品質情報を取得する電波情報取得部をさらに有し、
    　前記位置決定部は、前記品質情報に基づいて前記第２位置を決定する、
    　請求項７又は８に記載の通信網構築装置。     It also has a radio wave information acquisition unit that acquires quality information of the radio waves received by the first relay device.
    The position determining unit determines the second position based on the quality information.
    The communication network construction device according to claim 7 or 8.
PCT/JP2020/047513 2020-01-06 2020-12-18 Communication network construction method and communication network consturuction device WO2021140882A1 (en)

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JP2009111760A (en) * 2007-10-30 2009-05-21 Toshiba Corp Radio communication system
JP2016219874A (en) * 2015-05-14 2016-12-22 日本電信電話株式会社 Wireless relay system
JP2019169848A (en) * 2018-03-23 2019-10-03 株式会社日立国際電気 Unmanned aerial vehicle
JP2019176446A (en) * 2018-03-29 2019-10-10 ソフトバンク株式会社 Radio relay system and operation method of the same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009111760A (en) * 2007-10-30 2009-05-21 Toshiba Corp Radio communication system
JP2016219874A (en) * 2015-05-14 2016-12-22 日本電信電話株式会社 Wireless relay system
JP2019169848A (en) * 2018-03-23 2019-10-03 株式会社日立国際電気 Unmanned aerial vehicle
JP2019176446A (en) * 2018-03-29 2019-10-10 ソフトバンク株式会社 Radio relay system and operation method of the same

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