JP2019176446A - Radio relay system and operation method of the same - Google Patents

Abstract

To reduce a time until a start of an operation from the reception of a request for the operation of a radio relay system.SOLUTION: In response to an operation request of a radio relay system, a flight route of a flight unit is determined, and radio rely station ON/OFF control data that performs an ON/OFF control of a radio relay of a first radio relay station (master device) and a second radio relay station (slave device) is generated on the basis of the flight route of the flight unit. After the first radio relay station is installed in an area where a radio communication with a fixed base station can be performed, real time flight route data or all flight route data used for a flight operation control of the flight unit is transmitted to the flight unit via the first and second radio relay stations on the basis of the flight route of the flight unit, and the flight unit is operated at a remotely so as to flight on the flight route on the basis of the flight route of the flight unit. On the basis of the flight route of the flight unit, the radio rely station ON/OFF control data is transmitted to the first and second radio relay stations, and each radio rely of the first and second radio relay stations is ON/OFF controlled remotely .SELECTED DRAWING: Figure 1

Description

  The present invention relates to a wireless relay system and an operation method thereof.

  Conventionally, antennas for relays and mobile stations are used in weak electric field areas such as dead areas, mountain areas, and maritime areas where there are obstacles that interfere with line-of-sight propagation between antennas on fixed base stations on the ground. A wireless relay system that performs wireless relay using a drone or a mooring balloon equipped with a wireless relay station having an antenna is known (see, for example, Patent Document 1).

JP, 2006-002973, A

  As the above conventional wireless relay system, the present applicant mounts a wireless relay station (base unit) including a frequency converter on a vehicle that can move on the ground, moves to a destination (site) for wireless relay, The base station receives the radio waves from the station and establishes wireless communication between the base unit and the wireless relay station (slave unit) installed in the drone, so that the fixed base station and the user equipment (mobile station) Have been proposed (see Japanese Patent Application No. 2017-045122, Japanese Patent Application No. 2018-004142, Japanese Patent Application No. 2018-055632). For example, in the case of a disaster in a mountainous area that is outside the service area, the location of the mobile station is identified using the GPS function of the mobile station carried by the victim as soon as possible. There is a problem in that it is desired to further shorten the time from when an operation request is received until the operation is actually started.

A radio relay system according to an aspect of the present invention is a radio relay system that relays radio communication between a fixed base station of a mobile communication network and a user apparatus, and moves to an area where radio communication with the fixed base station is possible Wireless communication between the first radio relay station and the user device mounted on the first radio relay station that can be installed and a flying object that can be controlled to stay at a higher position than the first radio relay station Real-time flight route data used for flight control of the flying object based on the flight route of the flying object created by receiving a request for operation of the wireless relay system and the second wireless relay station that relays A remote control device for transmitting route data to the aircraft via the first radio relay station and the second radio relay station; and a radio relay device for each of the first radio relay station and the second radio relay station. The wireless relay ON / OFF control data for controlling the N / OFF, and a remote control device to be transmitted to the first radio relay station and the second radio relay station.
In the radio relay system, the first radio relay station relays radio communication between each of the fixed base stations of a plurality of communication operators having different radio signal frequencies and the second radio relay station, and the remote control A plurality of apparatuses may be provided corresponding to each of the plurality of communication operators.

An operation method of a radio relay system according to another aspect of the present invention includes a first radio relay station that can be installed by moving to an area where radio communication can be performed with a fixed base station of a mobile communication network, and the first radio relay station. The fixed base station and the user apparatus, comprising: a second radio relay station that is mounted on an aircraft that can be controlled to stay at a higher position and relays radio communication between the first radio relay station and the user apparatus. A method of operating a wireless relay system for relaying wireless communication between the first wireless relay station and the first wireless relay station; A step of creating wireless relay ON / OFF control data for controlling ON / OFF of the wireless relay of each of the two wireless relay stations, and after the first wireless relay station is installed in an area capable of wireless communication with the fixed base station , Based on the flight route of the flying object, real-time flight route data used for flight control of the flying object is transmitted to the flying object via the first wireless relay station and the second wireless relay station, and Remotely controlling the vehicle to fly along a flight route, and transmitting radio relay ON / OFF control data to the first radio relay station and the second radio relay station based on the flight route of the aircraft. Remote ON / OFF control of the wireless relay of each of the first wireless relay station and the second wireless relay station.
A method for operating a radio relay system according to still another aspect of the present invention includes a first radio relay station that can be installed by moving to an area capable of radio communication with a fixed base station of a mobile communication network, and the first radio relay station A second radio relay station that is mounted on an aircraft that can be controlled to stay at a higher position and relays radio communication between the first radio relay station and the user apparatus, and the fixed base station and the user A method of operating a wireless relay system that relays wireless communication with an apparatus, the step of determining a flight route of the flying object in response to an operation request for the wireless relay system, and based on the flight route of the flying object Generating wireless relay ON / OFF control data for controlling ON / OFF of the wireless relay of each of the first wireless relay station and the second wireless relay station; and an area capable of wireless communication with the fixed base station. After the first radio relay station is installed on the basis of the flight route of the flying object, all flight route data used for flight control of the flying object is transmitted via the first wireless relay station or the Transmitting to the aircraft via the first radio relay station and the second radio relay station and remotely maneuvering the aircraft to fly along the flight route; and wirelessly based on the flight route of the aircraft Transmitting relay ON / OFF control data to the first radio relay station and the second radio relay station, and remotely ON / OFF controlling the radio relay of each of the first radio relay station and the second radio relay station And including.
In the method of operating the radio relay system, the first radio relay station relays radio communication between each of the fixed base stations of a plurality of communication operators having different radio signal frequencies and the second radio relay station, The wireless relay ON / OFF control data may be transmitted for each communication operator so that the wireless relay of each of the plurality of communication operators is individually ON / OFF controlled.

  According to the present invention, it is possible to reduce the time from when a request for operation of the wireless relay system is received until the operation is actually started.

1 is a schematic configuration diagram illustrating an example of an overall configuration of a communication system including a wireless relay system according to an embodiment of the present invention. The schematic block diagram which shows an example of the whole structure of the communication system containing the radio relay system which concerns on other embodiment. Explanatory drawing of the subject of the operation | movement in the wireless relay system which concerns on a comparative example. The block diagram which shows an example of the principal part structure of the 1st radio relay station (master machine), the 2nd radio relay station (slave machine), and a flying body (drone) of the radio relay system which concerns on embodiment. The block diagram which shows an example of the principal part structure of the remote drone control apparatus which concerns on embodiment. An explanatory view showing an example of operation of a radio relay system concerning an embodiment. The flowchart which shows an example of the flow of operation | movement of the wireless relay system which concerns on embodiment. (A) is explanatory drawing of operation | movement of the conventional wireless relay system. (B) is explanatory drawing which shows an example of operation | movement of the radio relay system of this embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 are schematic configuration diagrams showing an example of the overall configuration of a communication system including a wireless relay system according to an embodiment of the present invention. The wireless relay system according to the present embodiment can carry out wireless relay to an out-of-service area by mounting a wireless relay station on a flying body such as a drone or a mooring balloon during a disaster or searching for a victim such as a mountain. It is a temporary radio relay system that can be used. In particular, the wireless relay system of the present embodiment has a simple configuration, and after moving to a target position, immediately starts relaying wireless communication between a fixed base station of a mobile communication network of a plurality of communication operators and a user device. can do.

  In FIG. 1, the radio relay system according to the present embodiment includes a first radio relay station (hereinafter also referred to as “master unit”) 10 and a second radio relay station (hereinafter also referred to as “slave unit”) 20. . The first radio relay station (base unit) 10 and the second radio relay station (slave unit) 20 are connected to the mobile communication networks 80A and 80B of a plurality of communication operators (communication carriers) A and B having different radio signal frequencies. Wireless communication between a plurality of fixed base stations 30A, 30B such as macro cell base stations connected to each of the core networks and a plurality of mobile stations 40A, 40B as user apparatuses corresponding to the plurality of communication operators A, B, respectively Are relayed simultaneously. The master unit 10 and the slave unit 20 are time-synchronized with each other using a received signal from a GPS satellite.

  In the present embodiment, the case where the number of communication operators (fixed base stations) is two will be described, but the number of communication operators (fixed base stations) may be three or more. In FIG. 1, the number of mobile stations corresponding to each of the communication operators A and B is 1, but the number of mobile stations corresponding to each of the communication operators A and B may be two or more.

  The mobile communication networks 80A and 80B may be provided with remote control devices 81A and 81B (remote control sources), respectively. The remote control devices 81A and 81B hold, for example, information on the first radio relay station 10 and the second radio relay station 20, and transmit control information to at least one of the first radio relay station 10 and the second radio relay station 20. be able to. The remote control devices 81A and 81B may function as information transmission destinations and receive information from at least one of the first radio relay station 10 and the second radio relay station 20. The remote control devices 81A and 81B may be provided in addition to the mobile communication networks 80A and 80B as long as they can communicate with the first radio relay station 10 and the second radio relay station 20. The control of the first radio relay station 10 and the second radio relay station 20 may be performed by both the remote control devices 81A and 81B, or may be performed by either one of the remote control devices 81A and 81B. Good. The remote control device 81C may be installed on a common communication network 80C other than the mobile communication networks 80A and 80B of the respective communication operators.

  In the common communication network 80C, a remote control device (hereinafter referred to as “remote drone control device”) 82 that remotely controls a drone 70 as a flying body on which the second radio relay station (child device) 20 is mounted. Is provided.

  The remote control devices 81A, 81B, 81C are, for example, servers, PCs, or tablet terminals that can communicate with the first radio relay station 10 or can communicate with the first radio relay station 10 and the second radio relay station 20. There may be. The remote drone control device 82 is a server, PC, or tablet that can communicate with the drone 70 via the first radio relay station 10 or the first radio relay station 10 and the second radio relay station 20. It may be a terminal.

  The first radio relay station 10 is also referred to as a first frequency to be relayed to the fixed base stations 30A and 30B (hereinafter referred to as “radio relay frequency” or “base station side frequency”) for each of the communication operators A and B. ) A second frequency (hereinafter referred to as “intermediate frequency”) between the radio signals F1A (downlink signal) and F1A ′ (uplink signal), F1B (downlink signal) and F1B ′ (uplink signal), and the second radio relay station 20 It is also a frequency conversion type radio relay device that relays F2A (downlink signal) and F2A ′ (uplink signal) and F2B (downlink signal) and F2B ′ (uplink signal) radio signals, and is an automobile. It can move to the target position on the ground.

  As shown in FIG. 2, the radio signal between the first radio relay station 10 and the second radio relay station 20 is a second frequency (hereinafter also referred to as “intermediate frequency”) F2 (downlink signal) common to the communication operators. ) And F2 ′ (upstream signal) radio signals. In addition, each of the communication operators A and B may use wireless relay in a time division manner.

  Hereinafter, F1A (downlink signal) and F1A ′ (uplink signal) are collectively expressed as “F1A / F1A ′”, and F1B (downlink signal) and F1B ′ (uplink signal) are collectively expressed as “F1B / F1B ′”. To do. Further, F2A (downlink signal) and F2A ′ (uplink signal) are collectively expressed as “F2A / F2A ′”, and F2B (downlink signal) and F2B ′ (uplink signal) are collectively expressed as “F2B / F2B ′”. F2 (downlink signal) and F2 ′ (uplink signal) are collectively expressed as “F2 / F2 ′”.

  The vehicle 50 on which the first wireless relay station 10 is mounted includes a battery, a generator, or the like that can supply power to the first wireless relay station 10 for a long time, such as an electric vehicle, a hybrid vehicle, and a fuel cell vehicle. It may be.

  The second radio relay station 20 transmits radio signals of the second frequencies (intermediate frequencies) F2A / F2A ′, F2B / F2B ′, and F2 / F2 ′ to the first radio relay station 10 for each of the communication operators A and B. And the first frequency to be relayed between the mobile stations 40A and 40B (hereinafter also referred to as “radio relay frequency” or “mobile station side frequency”) F1A / F1A ′ and F1B / F1B ′ radio signals. It is a frequency conversion type radio relay device that relays, and is higher than the first radio relay station 10 by being mounted on a drone 70 as a flying object that stays or moves in a predetermined airspace by autonomous control or by external control Can be in position. In this case, the automobile 50 on which the first radio relay station 10 is mounted may be provided with a takeoff / departure unit where the drone 70 can take off / depart.

  Hereinafter, a radio relay system using a drone as a flying body on which the second radio relay station 20 is mounted is also referred to as a “drone radio relay system”.

  First frequency (relay target frequency) F1A / F1A ′, F1B / F1B ′ and second frequency (intermediate frequency) F2A converted for each of the communication operators A and B in the first radio relay station 10 and the second radio relay station 20, respectively. / F2A ′, F2B / F2B ′, and F2 / F2 ′ cause wraparound interference between radio signals transmitted and received by the first radio relay station 10 and wraparound interference between radio signals transmitted and received by the second radio relay station 20 The frequency is different from each other. For example, the first frequencies (relay target frequencies) F1A / F1A ′ and F1B / F1B ′ are frequencies in the 2.1 GHz band, and the second frequencies (intermediate frequencies) F2A / F2A ′, F2B / F2B ′, and F2 / F2 ′. May be a frequency in the 3.3 GHz band.

  FIG. 3 is an explanatory diagram of problems in the operation of the wireless relay system according to the comparative example. In FIG. 3, the outline of operation assumed when investigating a victim using a drone radio relay system equipped with a drone as a flying body equipped with the second radio relay station is as follows (1) to (9). It is as follows.

(1) For example, a search request for specifying the position of a distress (to be exact, a portable terminal carried by the distress) is received from a search organization such as the police or a fire department to a communication operator (communication carrier).
(2) Next, the person in charge of the communication operator receives information on the position of the search location from the search side. In addition, the drone's rough flight course information (drone flight information) is received.
(3) Based on the information, the person in charge of the communication operator determines a position (master unit setting position) where communication with an existing mobile base station is possible in the vicinity of the search location.
(4) The person in charge of the communication operator carries the master unit and the slave unit mounted on the drone to the master unit setting position by, for example, an automobile.
(5) A communication operator person in charge, a searcher person in charge, and a person in charge of operating a drone (drone operator) gather at the base station installation location.
(6) The person in charge of the communication operator installs the antenna for the mobile base station and connects the base unit and the antenna for the mobile base station. In addition, an antenna for the slave unit is installed, and the antenna for the slave unit is connected to the master unit. The person in charge of the communication operator turns on the wireless relay between the master unit and the slave unit and starts communication. That is, the person in charge of the communication operator performs all settings and operations related to wireless relay.
(7) The person in charge on the search side designates a specific flight course to the drone operator. In other words, the person in charge on the search side performs operations related to the investigation, such as setting the flight course.
(8) The drone operator flies the designated flight course. That is, the drone operator performs all operations related to the drone flight.
(9) Further, if the mobile terminal of the victim is communicable (outside) from outside the service area, the mobile terminal of the victim is transmitted to the mobile terminal of the victim and acquires GPS information and displayed on the display device on the search side.

  In the operation of the above comparative example, basically, in order to investigate the victim using the drone wireless relay system, the “person in charge of investigation”, “person in charge of communication operator”, “ "Drone operator" needs to gather at the same time. The site to be investigated is expected to be remote areas such as snowy mountains. In general, "Investigator", "Communication Operator", and "Drone Operator" belong to different institutions, and these institutions are generally located at different locations. Since it takes a very long time to start the operation of the drone wireless relay system, the time until the operation is a big issue to carry out the search for the moment.

  Therefore, in the wireless relay system according to the present embodiment, as shown below, search operations (operation start) are performed by performing remote control via a communication line for each operation performed by an investigation organization, each communication operator, and a drone operator. ) Has been greatly shortened.

FIG. 4 is a block diagram illustrating an example of a main configuration of the first radio relay station (master unit), the second radio relay station (slave unit), and the flying body (drone) of the radio relay system according to the embodiment.
In FIG. 4, the radio relay system according to the present embodiment includes a first radio relay station (master) 10 installed at a position where it can communicate with existing mobile base stations (fixed base stations) 30A and 30B, a drone and a mooring balloon. A second radio relay station (slave unit) 20 is mounted. As the wireless relay system, a “non-reproduction / frequency-modified repeat system” is used in which radio waves of the mobile base stations 30A and 30B are received and frequency-converted and relayed.

  The first radio relay station (base unit) 10 includes first antennas (antennas for base stations) 101A and 10B for fixed base stations of the communication operators A and B, and a first base unit function corresponding to the communication operator A. 11A, second master unit function unit 11B corresponding to communication operator B, addition / distribution unit 12, and second antenna (antenna for slave unit) 102 for the radio relay station. The first base unit function unit 11A and the second base unit function unit 11B each include a frequency converter, an amplifier (AMP), and the like.

  The second radio relay station (slave unit) 20 corresponds to the first antenna (antenna for base unit) 201 for the radio relay station, the first slave unit function unit 21A corresponding to the communication operator A, and the communication operator B. A second handset function unit 21B, an addition / distribution unit 22, and a second antenna 202 for a mobile station. Each of the first slave unit function unit 21A and the second slave unit function unit 21B includes a frequency converter, an amplifier (AMP), and the like.

  In addition, a changeover switch is provided instead of each of the addition / distribution units 12 and 22 in FIG. 4 to switch between the first master unit function unit 11A and the second master unit function unit 11B of the base unit 10, and The communication operators A and B may be configured to use the wireless relay in a time division manner by synchronously executing the switching of the first slave unit function unit 21A and the second slave unit function unit 21B.

  For example, in the downlink, the base unit 10 wirelessly relays the radio signals of the frequencies F1A and F1B received by the first antennas 101A and 10B for the fixed base stations of a plurality of communication operators A and B with a frequency converter different from F1. The frequency is converted to a frequency (F2A, F2B) and transmitted from the second antenna 102 to the slave unit 20.

  The subunit | mobile_unit 20 receives the electromagnetic wave transmitted with the frequency (F2A, F2B) from the main | base station 10 with the 1st antenna 201, frequency-converts it to (F1A, F1B) with a frequency converter, and heads for mobile station 40A, 40B And output from the second antenna 202. The mobile station 40A of the communication operator A receives at the frequency of F1A, and the mobile station 40B of the communication operator B receives at the frequency of F1B.

  By performing frequency conversion in each of the parent device 10 and the child device 20, sneak interference of the same frequency between the first antennas 101A and 101B and the second antenna 102 of the parent device 10 and the antennas 201 and 202 of the child device 20 occurs. Since the transmission power of the parent device 10 and the child device 20 can be transmitted with the maximum transmission power, the wireless relay distance and the wireless relay area can be increased.

  In addition, the wireless relay system according to the present embodiment controls ON / OFF of the wireless relay of each of the parent device 10 and the child device 20 on the mobile communication networks (fixed networks) 80A and 80B of the respective communication operators A and B. Remote control devices 81A and 81B that transmit wireless relay ON / OFF control data to the master unit 10 and the slave unit 20 and remotely control the wireless relay of the master unit 10 and the slave unit 20 are provided.

  The search engine also includes a communication device that creates a flight route and transfers it to each communication operator and drone operator. Further, the drone operator has a remote drone control device 82 for remotely controlling the flight of the drone on a fixed network such as the communication network 80C.

  In the wireless relay system of this embodiment, the master unit 10 and the slave unit 20 are provided with wireless relay control devices 13 and 23 and wireless communication devices (portable communication modules) 14 and 24, respectively. Each of the communication operators A and B communicates from the remote control devices 81A and 81B on the mobile communication networks (fixed networks) 80A and 80B to the wireless communication devices 14 and 24 and the wireless relay control device 13 in the master unit 10 and the slave unit 20, respectively. The wireless communication of each parent device 10 or child device 20 is ON / FF-controlled via 23. The drone operator controls the flight control device (for example, flight controller) 72 of the drone (aircraft) 70 from the remote drone control device 82 through the wireless communication device 24 in the slave unit 20 and the communication device 71 in the drone. Carry out the flight.

  FIG. 5 is a block diagram illustrating an example of a main part configuration of the remote drone control device 82 according to the embodiment. The remote drone control device 82 includes a communication device 821 that communicates with the drone 70 via a communication network (fixed network) 80C, a user interface unit 822 that is operated by the drone operator, and a drone control via the user interface unit 822. A data generation unit 823 that generates real-time flight route data or total flight route data for maneuvering the drone based on the operation of the person.

FIG. 6 is an explanatory diagram illustrating an example of the operation of the wireless relay system according to the embodiment. FIG. 7 is a flowchart showing an example of the operation flow of the wireless relay system according to the embodiment. The basic operation of the wireless relay system of this embodiment is as follows.
A: Operation is carried out by search engines, transport / installers, communication operators (communication operators), and drone operators.
B: The search engine is the main organization, and requests work from the transport / installer, each carrier, and the drone operator.
C: Only the transport / installer is moved to the site (base unit installation location). Search engines, carriers, and drone operators do not move as in the past.
D: The search agency, each telecommunications carrier, and the drone operator carry out operations by remote control.

  The operation flow of the wireless relay system according to the embodiment is as follows (1) to (14).

[Judgment of search agency drone radio relay]
(1) Search agencies, such as police and fire departments, receive reports of mountain and snow mountain distresses, etc., and request a search to locate the victim (more precisely, the mobile terminal (mobile station) carried by the victim) Receive.

(2) The search organization identifies the search location and determines whether drone radio relay is necessary.

[Confirmation of implementation of drone radio relay by search agency]
If the search agency determines that drone radio relay is required,
(3) The person in charge of the search engine creates a flight route for the drone wireless relay (S1, S2 in FIG. 7).

(4) The person in charge of the search engine transfers the location of the master unit and the flight route data to the person in charge of each communication operator, and confirms whether or not wireless relay is possible (permitted / not permitted) (S3 in FIG. 7).

(5) The person in charge of each communication operator examines the possibility of wireless relay based on the situation such as interference and notifies the person in charge of the search organization of the result (S4, S5 in FIG. 7).

[Drone radio relay implementation]
If the search agency is notified by each communication operator that drone wireless relay is possible (OK),
(6) The person in charge of the search engine transports a set of equipment such as drone, master unit, and slave unit necessary for drone wireless relay to the transport / installer from the storage location to the master unit installation location by car, etc. The installation work is requested (S6 in FIG. 7). The person in charge of the transportation / installation company transports a set of equipment such as the main unit and sub unit from the storage location to the main unit installation location, and when it arrives at the main unit installation location, it makes the drone equipped with the sub unit a place where it can fly. Move. In addition, an antenna for base station and an antenna for slave unit are installed and connected to the master unit. When the installation of all the equipment is completed, the search engine is notified of the completion of the installation (S7 in FIG. 7).

(7) When the person in charge of the search engine receives a notification of the completion of the installation from the person in charge of the transport / installer, the person in charge of the search engine transfers the flight route information to the drone operator and requests the flight operation of the drone (S8 in FIG. 7). ).

(8) The person in charge of the drone operator performs the following (i) or (ii) by the remote drone control device based on the received flight route information, and starts the drone flight.
(I) Create and transmit control data (flight route data) in real time.
(Ii) All flight route data are created in advance and transmitted in a batch.

(9) The person in charge of the search engine requests the communication operator, who is permitted to perform the wireless relay, to start the wireless relay start control (ON) because the drone flight has started (S10 in FIG. 7).

(10) The person in charge of the communication operator requested to start control (ON) of the wireless relay from the search engine creates the wireless relay ON control data by the remote control device, and sends it to the master unit (or the master unit and the slave unit). On the other hand, wireless relay ON control data is transmitted, and wireless relay start control (ON) is performed (S11 in FIG. 7).

(11) If the person in charge of the search engine is able to communicate from the outside of the service area (within the area), the person in charge of the search engine transmits the information to the mobile terminal of the person in distress and acquires the GPS information of the mobile terminal. Or it displays on the display apparatus on the positional information collection apparatus of a search engine based on GPS information.

(12) The person in charge of the communication operator who is requested by the search engine for the completion control (OFF) of the wireless relay creates the wireless relay OFF control data by the remote control device and sends it to the master unit (or the master unit and the slave unit). On the other hand, wireless relay end control (OFF) is performed by transmitting wireless relay OFF control data.

(13) The drone operator who received the drone operation termination from the search organization returns the drone to the place where the base unit is installed.

(14) The transporter / installer who has received the search completion (storage start) notification from the search engine clears up the complete set of equipment such as the master unit and slave units at the base unit installation location, and stores them in the car. Return to.

  As described above, according to the present embodiment, the operation of the temporary wireless relay system corresponding to a plurality of communication operators is collectively performed by the communication operators at the request of a conventional investigation agency (see FIG. 8A). Investigators, transport / installers, communication operators, and drone operators can independently implement a temporary wireless relay system flow, which can drastically simplify operations (FIG. 8 (b) )reference).

  In addition, according to the present embodiment, for the conventional operation (see FIG. 8 (a)) that can be realized only when the personnel in charge of the investigation organization, each communication operator, and the drone operator are gathered at the location where the base unit is installed. The work performed by the investigation agency, each communication operator and the drone operator is realized by remote control via the communication line, eliminating the need for each person to gather at the location where the base unit is installed, until the search start (operation start) Can be greatly shortened (see FIG. 8B).

  Note that the processing steps described in this specification and the components of the base station apparatus in the radio relay station, the remote control apparatus, the remote control apparatus, and the base station can be implemented by various means. For example, these steps and components may be implemented in hardware, firmware, software, or a combination thereof.

  For hardware implementation, entity (eg, wireless relay station, base station device, wireless relay device, user device (mobile station, communication terminal), remote control device, remote control device, hard disk drive device, or optical disk drive device) Means such as processing units used to implement the above steps and components in one or more of: an application specific IC (ASIC), a digital signal processor (DSP), a digital signal processor (DSPD), programmable Logic devices (PLDs), field programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, electronic devices, and others designed to perform the functions described herein Electronic unit, computer, or It may be implemented in a combination thereof.

  Also, for firmware and / or software implementation, means such as processing units used to implement the above components may be programs (eg, procedures, functions, modules, instructions) that perform the functions described herein. , Etc.). In general, any computer / processor readable medium that specifically embodies firmware and / or software code is means such as a processing unit used to implement the steps and components described herein. May be used to implement For example, the firmware and / or software code may be stored in a memory, for example, in a control device, and executed by a computer or processor. The memory may be implemented inside the computer or processor, or may be implemented outside the processor. The firmware and / or software code may be, for example, random access memory (RAM), read only memory (ROM), nonvolatile random access memory (NVRAM), programmable read only memory (PROM), electrically erasable PROM (EEPROM) ), FLASH memory, floppy disk, compact disk (CD), digital versatile disk (DVD), magnetic or optical data storage, etc. Good. The code may be executed by one or more computers or processors, and may cause the computers or processors to perform the functional aspects described herein.

  Also, descriptions of embodiments disclosed herein are provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to the present disclosure will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. The present disclosure is therefore not limited to the examples and designs described herein, but should be accorded the widest scope consistent with the principles and novel features disclosed herein.

10: First radio relay station (master unit)
11A: First base unit function unit (communication operator A)
11B: Second base unit function unit (communication operator B)
12: Addition / distribution unit 13: Radio relay control device 14: Radio communication device 20: Second radio relay station (slave unit)
21A: First slave unit function unit (communication operator A)
21B: Second slave unit function unit (communication operator B)
22: Addition / distribution unit 23: Wireless relay control device 24: Wireless communication device 30A, 30B: Fixed base station (mobile base station)
31A, 31B: Antenna 40A, 40B: Mobile station 50: Automobile 60: Balloon 70: Flying object (drone)
80A, 80B: Mobile communication network 80C: Common communication network 81A, 81B: Remote control device 82: Remote control device 101A, 101B: First antenna (antenna for base station)
102: Second antenna (antenna for antenna)
200A, 200B: cell 201: first antenna (antenna for parent device)
202: Second antenna (antenna for terminal)

Claims (5)

A wireless relay system that relays wireless communication between a fixed base station of a mobile communication network and a user device,
A first wireless relay station that can be installed by moving to an area capable of wireless communication with the fixed base station;
A second radio relay station that is mounted on an aircraft that can be controlled to stay higher than the first radio relay station and relays radio communication between the first radio relay station and a user device;
Based on the flight route of the flying object created in response to the operation request of the wireless relay system, real-time flight route data or all flight route data used for flight control of the flying object is obtained from the first wireless relay station. And a remote control device for transmitting to the aircraft via the second radio relay station;
Remote transmission for transmitting wireless relay ON / OFF control data for controlling ON / OFF of wireless relay of each of the first wireless relay station and the second wireless relay station to the first wireless relay station and the second wireless relay station A wireless relay system comprising: a control device; The wireless relay system according to claim 1,
The first radio relay station relays radio communication between each of the fixed base stations of a plurality of communication operators having different radio signal frequencies and the second radio relay station,
A wireless relay system, wherein a plurality of the remote control devices are provided corresponding to each of the plurality of communication operators. A first radio relay station that can be installed by moving to an area capable of radio communication with a fixed base station of a mobile communication network, and a vehicle that can be controlled to stay at a higher position than the first radio relay station. An operation method of a radio relay system comprising: a second radio relay station that relays radio communication between the first radio relay station and a user apparatus; and relays radio communication between the fixed base station and the user apparatus. There,
Receiving a request for operation of the wireless relay system and determining a flight route of the flying object;
Creating wireless relay ON / OFF control data for controlling ON / OFF of the wireless relay of each of the first wireless relay station and the second wireless relay station;
After the first wireless relay station is installed in an area capable of wireless communication with the fixed base station, based on the flight route of the flying object, real-time flight route data used for flight control of the flying object, Transmitting to the aircraft via the first radio relay station and the second radio relay station and remotely maneuvering the aircraft to fly the flight route;
Radio relay ON / OFF control data is transmitted to the first radio relay station and the second radio relay station based on the flight route of the aircraft, and the radio of each of the first radio relay station and the second radio relay station is transmitted. And a step of remotely ON / OFF controlling the relay. A first radio relay station that can be installed by moving to an area capable of radio communication with a fixed base station of a mobile communication network, and a vehicle that can be controlled to stay at a higher position than the first radio relay station. An operation method of a radio relay system comprising: a second radio relay station that relays radio communication between the first radio relay station and a user apparatus; and relays radio communication between the fixed base station and the user apparatus. There,
Receiving a request for operation of the wireless relay system and determining a flight route of the flying object;
Creating wireless relay ON / OFF control data for controlling ON / OFF of the wireless relay of each of the first wireless relay station and the second wireless relay station based on the flight route of the aircraft;
After the first wireless relay station is installed in an area capable of wireless communication with the fixed base station, based on the flight route of the flying object, all flight route data used for flight control of the flying object, Transmitting to the aircraft via a first radio relay station or via the first radio relay station and the second radio relay station and remotely maneuvering the aircraft to fly over the flight route;
Radio relay ON / OFF control data is transmitted to the first radio relay station and the second radio relay station based on the flight route of the aircraft, and the radio of each of the first radio relay station and the second radio relay station is transmitted. And a step of remotely ON / OFF controlling the relay. In the operation method of the wireless relay system according to claim 3 or 4,
The first radio relay station relays radio communication between each of the fixed base stations of a plurality of communication operators having different radio signal frequencies and the second radio relay station,
The wireless relay system operating method, wherein the wireless relay ON / OFF control data is transmitted for each of the communication operators so that the wireless relay of each of the plurality of communication operators is individually ON / OFF controlled.