JP2019033323A - Base station device, communication system, and communication method - Google Patents

Abstract

To provide a base station device capable of autonomously moving with a high communication stability.SOLUTION: A unit 10 has such an integrated structure that a secondary battery 11, a power converter 12, a communication unit 200, and a drive unit 14 are accommodated in a housing. The secondary battery 11 has a capacity equal to or more than a specific capacity. The power converter 12 converts a power supplied from the secondary battery 11. The communication unit 200 performs ad hoc communication with the other device by the power converted by the power converter 12. The drive unit 14 moves the own device autonomously by the power converted by the power converter 12. In addition, the specific capacity of the secondary battery 11 is equal to or more than 12 kWh. The communication unit 200 includes a plurality of kinds of wireless communication units. A distribution unit 110 of a controller 100 performs distribution to any one of the plurality of kinds of wireless communication units according to a purpose of communication.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a base station apparatus, a communication system, and a communication method, and more particularly to a base station apparatus, a communication system, and a communication method that can move autonomously.

Conventionally, a plurality of devices (nodes) are connected directly (ad-hoc, Ad Hoc) by wireless communication without using an access point or the like (hereinafter referred to as “ad-hoc communication”), and between these nodes. There is an ad hoc network or mesh network that performs data routing (path setting) (hereinafter simply referred to as “mesh”).
As a conventional mesh, for example, an automobile ad hoc network (VANET) that performs wireless communication between automobiles or between a running automobile and road equipment has been put into practical use.

Here, as a conventional ad hoc network for automobiles, referring to Patent Document 1, it is a transmission path establishment method in which necessary calculation capability is suppressed as much as possible, and a transmission path is established without performing communication with a radio base station. A communication device capable of performing the above is disclosed.
The communication device mounted on the data requesting vehicle of Patent Document 1 specifies a target zone and transmits a data request message to an adjacent vehicle. When the communication device installed in the vehicle adjacent to the data requesting vehicle receives the data request message, it further forwards it. When the data request message is sequentially transferred by this repetition and is transferred to a plurality of vehicles existing in the target zone, a data response message is created in the communication device mounted on each vehicle. Then, the data response message is transferred to the data requesting vehicle by the same method as the data request message.

JP 2006-311132 A JP 2012-5245 A

  However, the automobile ad hoc network described in Patent Document 1 does not function as a node when the engine of the automobile serving as a node is stopped and the power supply of the automobile is turned off. For this reason, the stability of communication was low.

This invention is made | formed in view of such a condition, Comprising: It aims at providing the base station apparatus which eliminates the above-mentioned problem.

The base station apparatus (10) of the present invention includes a secondary battery (11) having a capacity equal to or greater than a specific capacity, a power conversion unit (12) that converts power supplied from the secondary battery (11), and the power A communication unit (200) that performs ad hoc communication with another device using the power converted by the conversion unit (12), and the device that autonomously moves the device by the power converted by the power conversion unit (12). The base station apparatus includes an integral unit (10) in which a drive unit (14) is housed in a housing (15).
A communication system (X) according to the present invention is a communication system (X) including a plurality of base station apparatuses (10) and a terminal (2) communicating via the base station apparatus (10). Each of the base station devices (10) includes a secondary battery (11) having a capacity equal to or greater than a specific capacity, a power converter (12) that converts power supplied from the secondary battery (11), and the power A communication unit (200) that performs ad hoc communication with any of the terminal (2) and the plurality of base station devices (10) using the power converted by the conversion unit (12), and the power conversion unit (12) It includes an integrated unit (10) in which a drive unit (14) for autonomously moving the device by converted power is housed in a housing (15), and the terminal (2) is close to Communicate with any of the plurality of base station apparatuses Characterized in that it is a communication system comprising signal portions (201).
The communication method of the present invention is a communication method executed by a communication system (X) including a plurality of base station devices (10) and a terminal (2) communicating via the base station device (10). Each of the plurality of base station devices (10) includes a secondary battery (11) having a capacity equal to or greater than a specific capacity, and a power converter (12) for converting power supplied from the secondary battery (11). The power conversion unit (12) performs ad hoc communication with either the terminal (2) or the plurality of base station devices (10) by the power converted by the power conversion unit (12) and is converted by the power conversion unit (12). The terminal (2) is a communication method in which the terminal (2) communicates with any of the plurality of base station apparatuses (10) in the vicinity by autonomously moving the own apparatus with the generated power.

  According to the present invention, by an integrated unit in which a secondary battery having a capacity of a specific capacity or more, a power conversion unit, a communication unit, and a drive unit for autonomously moving the device itself are housed in a housing. It is possible to provide a base station apparatus capable of realizing an ad hoc network with high stability.

1 is a system configuration diagram of a communication system according to an embodiment of the present invention. It is the (a) front view and (b) top view which show the schematic external appearance structure of the electric vehicle shown in FIG. It is a schematic sectional drawing of the unit shown in FIG. It is a block diagram which shows the control structure and functional structure of the unit shown in FIG. 2, and the terminal shown in FIG. It is a flowchart of the autonomous mobile base station process which concerns on embodiment of this invention. It is a conceptual diagram of the autonomous mobile base station process shown in FIG. It is a conceptual diagram of the autonomous mobile base station process shown in FIG.

[System configuration of communication system X]
First, the system configuration of the communication system X according to the embodiment of the present invention will be described with reference to FIG.
The communication system X includes, for example, a plurality of electric vehicles 1, terminals 2, and fixed base stations 3. The electric vehicle 1 constructs a mesh as shown by a one-dot chain line and mediates, for example, wireless connection from various terminals 2 to the fixed base station 3. For this reason, in the communication system X, mesh communication can be stabilized by autonomously moving so that a large number of electric vehicles 1 that circulate as a group.
With such a configuration, in the communication system X of the present embodiment, the electric vehicle 1 can be used as a wireless communication base station device capable of autonomous movement instead of the fixed base station 3. Further, the communication system X can provide a high-speed and robust communication network at a low cost, and can realize a disaster-resistant society.

The electric vehicle 1 includes, for example, a large-capacity secondary battery 11 (FIG. 3), and is unmanned mobility (mobility) that can move autonomously by automatic driving.
In the present embodiment, the electric vehicle 1 includes a unit 10 (FIGS. 2 and 3) that is a base station device (mobile base station) described later. This base station apparatus can function as a small base station such as a so-called micro cell, pico cell, or femto cell of a WAN such as a mobile phone network, a dedicated communication network, or the Internet.

The terminal 2 includes a smartphone (Smart Phone), a mobile phone, a PDA (Personal Data Assistant), a PC (Personal Computer), a car navigation terminal, a drive recorder, an HMD (Head Mount Display) mounted terminal, a glasses-type terminal, an arm-mounted terminal, Various wearable terminals such as ear-mounted terminals and pendant-type terminals, stationary voice assistant terminals, robot-type terminals, home appliances, button order-type terminals, network surveillance cameras, traffic signals, signs, and telemetry terminals (Internet of Things) Devices such as various mobility devices including automobiles. Further, the terminal 2 may be installed and fixed in a building or the like. In this case, it is also possible to use a network device such as a fixed wireless router, an access point, or a hub installed in a general home or company building as the terminal 2.
A configuration in which the terminal 2 is used from the seat of the electric vehicle 1 or the like is also possible. The terminal 2 can also be installed and executed by application software (hereinafter simply referred to as “application”) that can call the electric vehicle 1. Moreover, it is also possible to use it like the terminal 2 by connecting an operation panel or the like to the electric vehicle 1 or the unit 10 (FIGS. 2 and 3) mounted thereon. Similarly, a unit 10 described later installed in a building or the like can be used in the same manner as the terminal 2.

The fixed base station 3 is a WAN (Wide Area Network) gateway including a fixed base station such as a mobile phone network. The fixed base station 3 may be connectable to, for example, a dedicated line such as a core network realizing a mobile phone network, the Internet, or the like.
In addition, it is also possible to transmit / receive communication only by the electric vehicle 1 and process information without providing the fixed base station 3. In addition, a configuration in which data is transmitted and received by direct wireless communication from the electric vehicle 1 to a server such as the Internet (not shown) is also possible.

[Configuration of electric vehicle 1]
Next, a specific example in the case where the electric vehicle 1 is unmanned mobility will be described with reference to FIG.
The electric vehicle 1 of the present embodiment may include, for example, a slide door on the side surface of the vehicle body 40 and a seat inside, and may be able to carry seated or standing personnel. The personnel may be a user of the electric vehicle 1, a driver (driver), a service man, a cargo delivery manager, or the like.

  Moreover, the electric vehicle 1 may be capable of functioning as an automatic taxi that travels around a densely populated area of the house, and is called from a terminal 2 such as a smartphone and moved to an arbitrary place. At this time, the electric vehicle 1 is controlled by movement control of the control unit 100 (FIG. 4) mounted on the control board 13 (FIG. 3) of the built-in unit 10 or by movement control information such as an external movement control server. It is possible to move autonomously. The electric vehicle 1 can also move autonomously to a road or a charging station equipped with an overhead wire, an electromagnetic induction coil, or the like for charging. For this reason, the electric vehicle 1 may not be provided with mechanisms such as a handle, an accelerator, and a brake for the driver to operate, or may be detachable for maintenance.

  In addition, the electric vehicle 1 may automatically carry the cargo stored in the cargo compartment 50 and use it for home delivery or the like. In this case, the user may receive a parcel delivery package or give a receipt notification via the terminal 2. In addition, the structure which equips the electric vehicle 1 with a robot arm etc. for such home delivery is also possible.

Further, as will be described in detail later, the electric vehicle 1 functions as a mobile base station by a unit 10 that is a base station device having a communication function capable of a plurality of types of wireless communication.
As a configuration related to this, the electric vehicle 1 of the present embodiment includes the above-described unit 10, the transmission / reception unit 20, the non-contact power feeding unit 30, and the like.

The unit 10 is configured to further include a communication function in an apparatus in which, for example, the secondary battery 11 and the driving unit 14 described in Patent Document 2 are integrally configured. In the example of unmanned mobility in FIG. 2, the electric vehicle 1 according to the present embodiment includes two units 10, for example, transports up to a dozen people or transports a cargo of several tons. It may be possible. In other words, the electric vehicle 1 of the present embodiment is equipped with two units 10 so that, for example, unmanned mobility in which a large number of people can board and carry cargo can obtain sufficient power performance for urban driving. Yes.
Further, the unit 10 realizes the function of the base station apparatus of the present embodiment, and has a communication function capable of communicating with other base station apparatuses using a plurality of wireless communication means. Details of this communication function will be described later.
The number of units 10 per electric vehicle 1 may be variable according to the mass to be transported and the purpose of transport. For example, if one unit 10 is mounted, sufficient power performance can be obtained in a vehicle having a light vehicle class weight of less than about 1 ton. If two units 10 are mounted, it is possible to sufficiently drive ordinary passenger cars, small trucks, and the like. If three to six units 10 are mounted, large passenger cars, vans, microbuses, sightseeing buses, medium to large trucks, and the like can be driven sufficiently.
The unit 10 may be easily removable. In this case, it is also possible to replace the unit 10 for each unit 10 used, for example, in units of 5 to 10 years.

The transceiver 20 includes, for example, an antenna for a mobile phone, an antenna capable of beam forming, an infrared and laser transceiver, a LIDAR (Light Detection and Ranging, Laser Imaging Detection and Ranging), and a millimeter wave radar (Extremely High Frequency Radar). , An antenna for performing V2X (Vehicle to X, Vehicle to Everything) communication, an antenna of GNSS (Global Navigation Satellite System, Global Positioning System, hereinafter simply referred to as “GPS” or the like), and the like. Moreover, the transmission / reception unit 20 may be an antenna having greater directivity in the front-rear direction of the host vehicle. This is because it is easy to communicate with other vehicles on the road.
In the present embodiment, “wireless” refers to communication means that does not use direct cable connection such as visible light communication and infrared communication using LEDs and lasers such as headlights and tail lamps and in-vehicle cameras, in addition to RF (Radio Frequency). Including.

The non-contact power feeding unit 30 includes an electromagnetic induction coil for charging, a resonance circuit including a resonance capacitor, and the like. By this non-contact power feeding unit 30, the secondary battery 11 (FIG. 3) in the unit 10 can be charged.
In addition, you may comprise so that it may contact-charge using the terminal for charge, a pantograph, etc. instead of the non-contact electric power feeding part 30.

[Configuration of Unit 10]
Next, the main configuration of the unit 10 will be described with reference to FIG.
The unit 10 includes a secondary battery 11, a power conversion unit 12, a control board 13, a drive unit 14, and a housing 15.
Here, FIG. 3A shows a unit 10-1, which is a configuration example of the unit 10 including the single secondary battery 11. FIG. 3B shows a unit 10-2, which is a configuration example of the unit 10 that is made redundant by the secondary battery 11a and the secondary battery 11b.

The secondary battery 11 has a capacity equal to or greater than a specific capacity, which is larger than that of a general engine-driven automobile, hybrid vehicle, or the like. Therefore, the secondary battery 11 may be, for example, a lithium ion battery, a sodium sulfur battery, a silicon sulfur battery, a metal-air battery such as lithium, aluminum, magnesium, or zinc. The lithium ion battery may be a flame retardant solvent lithium ion battery, an all solid lithium ion battery, or the like. In the present embodiment, the secondary battery 11 has a plurality of cells C connected in series or in parallel, and the output DC voltage of the battery is adjusted. This DC voltage is a safety voltage of less than 60 volts, and may be 42 volts or 48 volts as specific examples.
The specific capacity of the secondary battery 11 is preferably at least 12 kWh. In this case, for example, the specific capacity may be 12 kWh or more by a set of secondary batteries as in the unit 10-1 of FIG. Further, a plurality of secondary batteries 11 are made redundant in two or more types, and the specific capacity may be 12 kWh in total. In this case, for example, in the unit 10-2 of FIG. 3B, the secondary battery 11a and the secondary battery 11b, each having the same capacity of 6 kWh, are configured as an integrated secondary battery. That is, in the example of the unit 10-2, the total capacity is 6 kWh × 2 = 12 kWh. In addition, the structure which makes it redundant by 3 or more types of secondary batteries is also possible.
Thus, since the secondary battery 11 has a capacity of 12 kWh or more, it is possible to achieve both functions as a base station while performing practical autonomous movement in the electric vehicle 1. If the vehicle has a total battery capacity of less than 12 kWh, as in the prior art, for example, if the base station function is always executed, it may fall into an overdischarge, and it may not be possible to reach a charging facility or the like by independent movement. Therefore, it is not preferable. In addition, even in a conventional normal vehicle, a hybrid vehicle equipped with a secondary battery 11 of about 1 to 10 kWh, a plug-in hybrid vehicle, or the like, even if it is intended to function as the base station device of this embodiment, Since the operation time which can be operated as a base station apparatus is short, it is not preferable. Further, when a plurality of secondary batteries are made redundant with two or more types as in the unit 10-2, it is possible to prevent a situation in which a failure occurs in the battery part of only one set and the entire battery does not operate.
When a plurality of redundant secondary batteries are used, each redundant battery may be replaceable. For example, in the case of the unit 10-2, the secondary battery 11a and the secondary battery 11b may be separately replaceable.
For example, when a metal-air battery is used as the secondary battery 11, the secondary battery 11 is used in a primary battery configuration in which a cell is taken out from the housing 15 after being discharged and replaced with a charged (refined) cell. May be. Further, this replacement can be configured such that the unit 10 including the secondary battery 11 is detached and replaced. Further, the removed metal oxide after discharge may be regenerated by refining.

The power conversion unit 12 converts the power supplied from the secondary battery 11. For this reason, the power conversion unit 12 may be configured by a polyphase multiple inverter or the like capable of performing step-up / step-down and DC / AC conversion during charging / discharging of the secondary battery 11. In addition, the power conversion unit 12 can output the DC power when the secondary battery 11 is discharged to other units without stepping up or down. Further, the operation of the power conversion unit 12 may be controlled by the control board 13.
Further, the power conversion unit 12 and the secondary battery 11 may be provided with heat pipes, heat lanes, and other liquid flow paths, and may be capable of transporting heat.

The control board 13 controls each part of the unit 10 and performs communication for operating the unit 10 as a base station apparatus. For this reason, the control board 13 is provided with each circuit, such as the communication part 200 (FIG. 4) and the control part 100 so that it may mention later. The control configuration and functional configuration of each part of the control board 13 will be described later.
The control board 13 may be provided with a fan, a pump for moving the refrigerant, and the like. Thereby, the heat of the secondary battery 11, the power conversion unit 12, the control board 13, and the like may be dissipated to the outside via the housing 15.
Further, the control board 13 may include one or a plurality of antennas for the communication unit 200 described later. This antenna may be a planar antenna or a rod antenna.
Moreover, the control board 13 may be connectable with the transmission / reception part 20 and the non-contact electric power feeding part 30 via the terminal part of the housing | casing 15, and the connected conductive wire.
The control board 13 is not a single board but may be configured such that a plurality of boards, members, and the like are connected by various conductive wires (codes, cables) including a flexible cable and a flat cable. The “conductive wire” includes a cord, a cable, and the like that perform optical transmission such as an optical fiber.

The drive unit 14 is a three-phase AC motor, an AC motor using a permanent magnet, a DC motor, or the like. In the present embodiment, a three-phase AC motor having a maximum output of about 10 to 15 kW (maximum torque of about 50 to 75 Nm) may be used for the drive unit 14. Moreover, the drive part 14 may be equipped with two or more motors so that it may drive separately with a left-right wheel. Further, as in the electric vehicle 1 of the present embodiment, two units 10 may be mounted and the front and rear wheels may be driven separately by the drive unit 14. Thereby, it is possible to easily change the steering, the speed, and the traveling direction.
Further, the drive unit 14 of the present embodiment may be used as a generator. In this case, the drive unit 14 can act as a regenerative brake of the electric vehicle 1. That is, the secondary battery 11 can be charged via the power conversion unit 12 by the electric power generated by the drive unit 14 driven by regeneration.
In the present embodiment, the drive accommodating portion 10b including the drive portion 14 is configured to be removable. For this reason, the structure which the drive part 14 does not exist in the unit 10 is also possible. In such a configuration, the unit 10 can be installed in a home, a small-scale facility, or the like, and function as a power storage device for renewable energy such as solar power generation or wind power generation.
Conversely, the unit 10 is installed in a building with the drive unit 14 and can be used as a generator for a small turbine, small-scale hydroelectric power generation, binary power generation, or the like. In this case, the drive unit 14 may include a generator having a configuration more suitable for power generation, an accompanying mechanism, and the like.

The housing 15 is a case or housing made of metal such as aluminum, iron, stainless steel, and magnesium, various resins, fiber reinforced plastic, or carbon. In the present embodiment, the housing 15 stores therein the secondary battery 11, the power conversion unit 12, the control board 13, and the drive unit 14. Moreover, the housing | casing 15 may be able to permeate | transmit an electromagnetic wave, when the internal communication part 200 (FIG. 4) is equipped with the antenna. Further, at least a part of the housing 15 can be used for heat dissipation of the internal heat. In this case, the casing 15 may be provided with a radiator, a fin, or the like so as to conduct heat more easily.
Further, as described above, the housing 15 may be configured such that the drive accommodating portion 10b that accommodates the drive portion 14 is detachable. In this case, the secondary battery 11, the power conversion unit 12, and the battery storage unit 10a in which the control board 13 is stored may be connected via a terminal and a conductive wire.

[Control Configuration and Functional Configuration of Unit 10 and Terminal 2]
Next, the control configuration and functional configuration of the unit 10 and the terminal 2 of the communication system X according to the embodiment of the present invention will be described with reference to FIG.
According to FIG. 4A, the unit 10 is connected to the control board 13, the secondary battery 11, and the drive unit 14 via the power conversion unit 12. Further, the power conversion unit 12 may be connected to the non-contact power supply unit 30.

  Here, the configuration of the control board 13 will be described in more detail. The control board 13 includes a control unit 100, a communication unit 200, a sensor group 300, and a storage unit 400.

The control unit 100 is information processing means including an MPU (Micro Processing Unit), a CPU (Central Processing Unit), other ASIC (Application Specific Processor), and the like. The control unit 100 also includes a GPU (Graphics Processing Unit), a vector computing unit, a TPU (Tensor Processing Unit), a DSP capable of executing AI (Artificial Intelligence) processing such as an artificial neural network at high speed for image processing of an in-vehicle camera. (Digital Signal Processor) or the like may be provided.
The control unit 100 reads out a control program stored in the auxiliary storage unit of the storage unit 400, expands and executes the control program in the main storage unit, and operates as each functional block (functional unit) described later. Be made. Further, the control unit 100 may control the entire electric vehicle 1 in conjunction with the ECU of the electric vehicle 1 and the other unit 10.

The storage unit 400 is a non-transitory tangible storage medium. The storage unit 400 is a main storage unit such as a RAM (Random Access Memory), an ROM (Read Only Memory), an SSD (Solid State Disk), an auxiliary storage unit such as a magnetic recording medium, an external such as a flash memory card or an optical recording medium. A storage unit may be included.
The auxiliary storage unit of the storage unit 400 stores a control program for performing operation control of the unit 10 and the electric vehicle 1 and the like. This control program may include an OS (Operating System), firmware, and the like. The storage unit 400 also stores various other data.

The sensor group 300 includes various sensors that measure and detect the environment around the device. Specifically, the sensor group 300 may include, for example, a gyro, a three-dimensional acceleration sensor (hereinafter simply referred to as “acceleration sensor”), an altitude sensor, an atmospheric pressure sensor, a humidity sensor, a magnetic sensor, and the like.
In the control board 13, for example, signals from various sensors (hereinafter referred to as “external sensors”) provided inside and outside the electric vehicle 1 other than the unit 10 are acquired via the terminals of the housing 15. It can be used in the same manner as the signal from the sensor group 300. Using such external sensor signals, it is possible to obtain sensor information on the state of the vehicle including the passenger, the state of the cargo in the cargo compartment 50, external weather and air pollutants, and other ambient conditions. It may be.

  The communication unit 200 performs ad hoc communication with the terminal 2 and any of the plurality of base station devices using the power converted by the power conversion unit 12. Therefore, the communication unit 200 is, for example, a wireless communication circuit that can be connected to the terminal 2, the fixed base station 3, another vehicle, another unit 10, and the like. The communication unit 200 may include various logic layer and physical layer circuits.

The communication unit 200 includes a plurality of types of wireless communication units.
In the present embodiment, a short-range wireless communication unit 210 and a long-range wireless communication unit 220 are included as the plurality of types of communication units 200.

  The short-range wireless communication unit 210 is a wireless communication circuit that can communicate over a short distance mainly between the terminal 2 and / or the electric vehicle 1. In the case of RF, the short-range wireless communication unit 210 performs radio wave communication capable of high-speed and / or short-range communication such as 2.4 GHz band such as WiFi, 5 GHz, 60 GHz, 77 GHz of millimeter wave radar, terahertz wave, and the like. . That is, for example, the short-range wireless communication unit 210 may mainly perform short-wave wireless communication. Although this shortwave communication band is relatively free, it is difficult to reach only a short distance and linearly, and the communicable distance is short. For this reason, the short-range wireless communication unit 210 may be able to communicate over a relatively short distance of about several hundred meters to several kilometers, for example. In addition, the short-range wireless communication unit 210 may perform visible light communication, infrared communication, or the like that is more straightforward and can be performed at a short distance.

Further, the short-range wireless communication unit 210 can dynamically change the communication target by performing ad hoc communication. The short-range wireless communication unit 210 relays packets from the terminal 2, the fixed base station 3, and / or other vehicles. As a specific example, for example, when the short-range wireless communication unit 210 connects to a communication target using WiFi or the like, the short-range wireless communication unit 210 may construct a mesh by performing WiFi direct communication or the like. In this case, the short-range wireless communication unit 210 may perform inter-base station communication corresponding to the mesh. The inter-base station communication corresponding to this mesh may use a protocol or the like different from that defined by the mobile phone network or the like.
In addition, the short-range wireless communication unit 210 may perform unstable wireless communication because the communication target to be connected may be changed when the electric vehicle 1 moves. For this reason, the short-range wireless communication unit 210 may perform buffering to store the acquired packet as temporary data 410, as will be described later. In addition, the short-range wireless communication unit 210 may transmit the buffered packet while the connection with the communication target is stable.
Further, the short-range wireless communication unit 210 may be able to perform radio wave communication for low-speed wireless communication for various IoT devices and the like.

The long-range wireless communication unit 220 is a wireless communication circuit that can communicate over a longer distance than the short-range wireless communication unit 210 between the self-device and the electric vehicle 1 and the fixed station device. The long-distance wireless communication unit 220 is a mobile phone network (mobile phone) such as 3G, 4G (LTE), 5G, a data communication network, WiMAX (registered trademark) at 700 MHz to 900 MHz, for example, as in the so-called “platinum band”. Communication network (hereinafter simply referred to as “mobile phone network”). That is, the long-range wireless communication unit 220 mainly performs long-wave wireless communication, for example. Although long-wave bands such as the platinum band are often congested, they can communicate over long distances. Specifically, the long-distance wireless communication unit 220 may be able to communicate over a distance of several kilometers to several tens of kilometers, for example.
Further, the long-distance wireless communication unit 220 may correspond to the rules of the mobile phone network and perform inter-base station communication corresponding to the rules of each mobile phone company. The long-distance wireless communication unit 220 can also mediate packets from the terminal 2, other devices, and / or other vehicles using protocols other than communication between base stations. As a protocol other than the inter-base station communication, a protocol such as the above-described mesh communication or inter-base station communication corresponding to the mesh may be used.
The long-distance wireless communication unit 220 may also perform radio communication dedicated to automobiles such as 700 MHz.

  The long-distance wireless communication unit 220 can maintain a communication state with the fixed station device up to a specific range even when the electric vehicle 1 moves. For this reason, the long-distance wireless communication unit 220 can perform stable wireless communication.

  The communication unit 200 transmits / receives communication by the short-range wireless communication unit 210 and communication by the long-range wireless communication unit 220 by the transmission / reception unit 20 using a technique such as frequency band time division multiplexing communication. Also good. Moreover, the communication part 200 may transmit / receive these communications separately using a separate antenna. In addition, the communication unit 200 may perform wired communication using a vehicle-mounted network or the like via a terminal and a conductive wire with the communication unit 200 of the other unit 10 in the vehicle.

In the present embodiment, the control unit 100 includes a distribution unit 110, a route construction unit 120, and a movement control unit 130.
The communication unit 200 includes a short-range wireless communication unit 210 and a long-range wireless communication unit 220.
The storage unit 400 stores temporary data 410, map data 420, and billing data 430.

The distribution unit 110 distributes to any of a plurality of types of wireless communication units corresponding to the purpose of communication.
In the present embodiment, the sorting unit 110 estimates the purpose based on, for example, the added value, urgency, importance, etc. of information to be communicated, and is assigned to either the short-range wireless communication unit 210 or the long-range wireless communication unit 220. Distribute.
At this time, for example, the distribution unit 110 can preferentially distribute the important communication that requires real-time processing to the long-distance wireless communication unit 220. In addition, the distribution unit 110 can direct communication that does not require real-time property or comfortable communication to the short-range wireless communication unit 210.

More specifically, the purpose of communication that the distribution unit 110 distributes to the short-range wireless communication unit 210 is to allow a slight delay by performing buffering, and even for relatively unstable communication. Good. Specific examples of such communication include communication of various status information of the electric vehicle 1, telemetry communication, communication for web order by pressing a button, communication by various assistant type services, non-real-time communication of various IoT devices, terminal 2 Communication of call of electric vehicle 1 by WWW, communication for browsing WWW (World Wide Web) page, transmission / reception of e-mail by POP / SMTP, transmission / reception of messages by various SNS (Social Network Service) and messenger, SMS (Short Message) Service), push-type information distribution, file transmission / reception by FTP (File Transfer Protocol), image data of still images and moving images that can be buffered, uploading and downloading to various cloud storages, and the like.
In addition, for the purpose of communication, the distribution unit 110 may distribute communication to the short-range wireless communication unit 210 for the above-described comfort system that may be unstable. Such communication may be, for example, streaming video transmission / reception, transmission / reception of game battle data, file transfer by PtP (Peer to Peer), and the like.

In addition, the distribution unit 110 may distribute the vehicle network communication such as V2X communication to the short-range wireless communication unit 210. Further, the distribution unit 110 may further distribute communication such as information on various sensors of the sensor group 300 and information on the in-vehicle camera to the short-range wireless communication unit 210. The distribution unit 110 also distributes communication such as monitoring image data when the terminal 2 is a network monitoring camera and information on the monitoring state of the road state by traffic signals and signs to the short-range wireless communication unit 210. May be.
By communicating and sharing such data, the image data of the in-vehicle camera of each electric vehicle 1 and the image data of the network monitoring camera, etc., captured at the same point in different directions and at different times can be shared. , It can be used for usage methods such as “360-degree camera” for sharing crime prevention information.

  Further, as a purpose of communication that the distribution unit 110 distributes to the long-distance wireless communication unit 220, communication that requires reliable connection and real-time property and needs to perform stable wireless communication may be used. The communication that requires stable wireless communication may be, for example, real-time movement control information communication of the electric vehicle 1 or real-time communication by VoIP (Voice over IP) call.

Further, the distribution unit 110 may determine the purpose of communication for performing distribution as described above from, for example, the types of protocols for various communication, port numbers, target IP addresses, and the like. The distribution unit 110 may determine the purpose of communication using information included in a packet such as a TTL of an IP packet, fragmentation, or a header of an encapsulated IP packet. Further, the distribution unit 110 may set a different SSID or the like for each terminal 2 or unit 10 and determine the purpose of communication depending on which SSID or the like is connected. In this case, even if the control unit 100 of the terminal 2 determines which SSID or the like to connect to based on the type of application software (hereinafter, “application” is omitted), etc. Good.
The distribution unit 110 estimates the purpose of communication by controlling the communication with the fixed base station 3 related to the control of communication such as channel assignment in the radio section, the handover control function, and the like. It may be determined to distribute to any of the wireless communication units.

In addition, the distribution unit 110 may change the distribution to a plurality of types of wireless communication units based on the sensor information of the sensor group 300.
For example, the sorting unit 110 may sort from the short-range wireless communication unit 210 to the long-range wireless communication unit 220 when the acceleration of the acceleration sensor and / or the change in the acceleration is larger than a specific threshold. For example, the acceleration and / or the specific threshold value of the change in acceleration are set corresponding to the case where the electric vehicle 1 is in the middle of movement control, which will be described later, or the situation of surrounding traffic is not stable. Also good.
The sorting unit 110 may sort from the short-range wireless communication unit 210 to the long-range wireless communication unit 220 based on, for example, information from an altitude sensor or an atmospheric pressure sensor. For example, the distribution unit 110 may perform such distribution even in the vicinity of other vehicles in the vicinity, when the altitudes of the other vehicles in the vicinity are different and communication is difficult. Conversely, the sorting unit 110 may sort from the long-range wireless communication unit 220 to the short-range wireless communication unit 210 based on information from an altitude sensor or an atmospheric pressure sensor, for example. For example, the sorting unit 110 may perform such sorting when the host vehicle is at a higher position than other vehicles around and the communication by the short-range wireless communication unit 210 is easy.
Further, the sorting unit 110 sorts from the long-range wireless communication unit 220 to the short-range wireless communication unit 210 or from the short-range wireless communication unit 210 to the long-range wireless communication unit 220 depending on the situation of the external sensor. Also good.

In the situation where the delay in the short-range wireless communication unit 210 is less than a predetermined threshold and is stable, the distribution unit 110 is short-range wireless even in the case of the relatively important communication described above. You may distribute to the communication part 210. FIG.
Such a situation can be realized by grouping a plurality of electric vehicles 1 by movement control of autonomous movement by the movement control unit 130 described below and route construction by the route construction unit 120. May be.
On the other hand, when the short distance wireless communication unit 210 is difficult or unstable, such as when there are few electric vehicles 1 around the distribution unit 110, the distribution unit 110 sets the long distance wireless communication unit 220 to the long distance wireless communication unit 220. You may distribute.

The distribution unit 110 can also perform communication settlement and billing.
In this settlement or billing, the distribution unit 110 may perform authentication with the terminal 2. For example, the distribution unit 110 may measure the number of packets using communication for each terminal 2, the amount of data, and the like, and calculate a data usage fee for the terminal 2.
In addition, the distribution unit 110 may calculate a usage fee for a mobile phone company or the like for using the unit 10 as a base station device from the communication amount in the communication unit 200. In this case, an ID (Identification) may be set for each unit 10, and a usage fee may be calculated for communication in this unit 10. That is, these usage fees may include an amount paid by the user of the terminal 2 and an amount paid or paid to a mobile phone company or the like.
Further, a plurality of owners may be set for each unit 10 and the usage fee may be calculated for each owner. Further, the communication usage fee in the unit 10 may be paid based on the number of units 10 and the like, and settlement using a block chain may be performed. In this case, the usage fee related to the virtual communication amount of each owner may be calculated from the total amount of communication via the unit 10 by a method of calculating the communication amount using the virtual currency.

  The path construction unit 120 constructs an ad hoc communication path corresponding to the purpose of communication. Specifically, the route construction unit 120 can dynamically construct a communication route by performing routing for both the short-range wireless communication unit 210 and the long-range wireless communication unit 220 to form a mesh. Is possible. The route construction unit 120 may calculate an optimum route for the route of the short-range wireless communication unit 210 based on the GPS information of other terminals 2 and units 10. The route construction unit 120 can also share the calculated route information as routing information among the unit 10 of the other vehicle, the electric vehicle 1, the base station device, and the terminal 2.

The movement control unit 130 controls the movement of the unit 10 according to the population density and / or the communication usage rate.
Further, the movement control unit 130 may perform movement control such that the destination of the own vehicle itself is selected and moved in cooperation with another unit 10 in the own vehicle, the ECU of the own vehicle, and the like. Specifically, for example, when the electric vehicle 1 that is the own vehicle is unmanned mobility, the movement control unit 130 can construct a mesh while considering a call by a user and a destination by movement. Move your vehicle. At this time, the movement control unit 130 moves the host vehicle to a position where the density of the mesh can be easily formed. Further, the movement control unit 130 may automatically control the inter-vehicle distance or the like so that the distance between the own vehicle and the other vehicle becomes appropriate during movement.
This makes it possible to form a mesh while waiting for a user to use it like a so-called “sink” taxi in the vicinity of an urban area or a building with a high population density. Further, for example, the movement control unit 130 may move the own vehicle so that the density of the mesh becomes high at a place where the communication usage rate is high, similarly to the population density.
In addition, when the cargo is delivered, the movement control unit 130 can calculate the delivery route in consideration of the mesh density and control the vehicle to move.

  The temporary data 410 includes buffer data and the like buffered by the communication unit 200. The buffer data may be, for example, packet data distributed to the short-range wireless communication unit 210. The temporary data 410 may be image data, audio data, PtP data, or the like having a specific length or capacity.

  The map data 420 is electronic map data. The electric vehicle 1 may be able to move autonomously based on the map data 420 and information such as GPS.

  The billing data 430 is data for communication settlement and billing. The billing data 430 may include, for example, the ID, password, hash function, public key, etc. of the owner of the own unit 10. Accordingly, the billing data 430 may be used for authentication with the terminal 2 and for calculating a usage fee. Further, the billing data 430 may include data such as “wallet” for virtual currency of the block chain.

The terminal 2 includes a communication unit 201.
The communication unit 201 performs wireless communication corresponding to various communication methods of the short-range wireless communication unit 210 and the long-range wireless communication unit 220 of the unit 10. For this reason, the communication unit 201 can be connected to the mesh configured by the unit 10 and the fixed base station 3. At this time, the control unit 100 of the terminal 2 executes a dedicated connection application and connects to one of the short-range wireless communication unit 210 and the long-range wireless communication unit 220 of the unit 10 of the electric vehicle 1 depending on the purpose of communication. It may be selectable.

Note that the communication unit 201 of the terminal 2 may not perform communication between base stations.
The terminal 2 may include an input unit such as a touch panel, a pointing device such as a mouse, a button, a keyboard, an acceleration sensor, a line-of-sight sensor, and a biometric sensor.
The terminal 2 may include a display unit such as an LCD (Liquid Crystal Display), an organic EL display, and an LED (Light Emitting Diode).

The electric vehicle 1, the terminal 2, and the fixed base station 3 may include other components in addition to the above-described units, and each unit may include a plurality of control units.
In addition, any one of the units and any combination thereof may be integrally configured. Further, each of the control unit 100 and the storage unit 400 may be integrally formed.

Here, the control unit 100 of the unit 10 executes a control program on an OS (Operating System) stored in the storage unit 400, so that the control unit 100, the distribution unit 110, the route construction unit 120, and the movement control unit 130 and so on.
Each unit of the unit 10 and the terminal 2 is a hardware resource for executing the method of the present invention.
Note that some or all of the functions executed by the control unit 100 may be configured by hardware using one or more ICs, DSPs, programmable logic circuits, and the like.

[Autonomous mobile base station processing by unit 10]
Next, the autonomous mobile base station processing according to the embodiment of the present invention will be described with reference to FIGS.
In the autonomous mobile base station processing of the present embodiment, the unit 10 mounted on the electric vehicle 1 mainly receives power from the terminal 2 using the power converted by the power conversion unit 12, and the unit 10 of the other vehicle. And function as a mobile base station that relays to the fixed base station 3. At this time, the unit 10 performs ad hoc communication with the terminal 2 and a plurality of base station apparatuses. Moreover, the electric vehicle 1 is moved autonomously by the electric power converted by the power conversion unit 12.
In the autonomous mobile base station processing of the present embodiment, the control unit 100 of the unit 10 mainly executes the program stored in the storage unit 400 using hardware resources in cooperation with each unit.
Hereinafter, details of the autonomous mobile base station processing of this embodiment will be described step by step with reference to the flowchart of FIG. In addition, in the autonomous mobile base station process of this embodiment, the example in which the unit 10 contained in the electric vehicle 1 cooperates and performs the same process is described.

(Step S101)
First, the distribution unit 110 performs sensor information acquisition processing.
The sorting unit 110 acquires information on each sensor from the sensor group 300.
Further, the distribution unit 110 receives information such as GPS from the transmission / reception unit 20 of the own vehicle, compares the information with the map data 420, and calculates the position of the own vehicle. Then, the distribution unit 110 measures and detects the environment around the own device from the information of each sensor and the position of the own vehicle, and grasps it.
Thereby, the distribution unit 110 may calculate the relationship among the position, speed, acceleration, and the like of the terminal 2, the other vehicle, the other unit 10, and the fixed base station 3, and may use the calculated relationship.

(Step S102)
Next, the distribution unit 110 performs communication establishment processing.
In this process, first, the communication unit 200 of the unit 10 as its own device communicates with the communicable terminal 2, the unit 10 of the other vehicle, and the communicable base station 3.
Here, the communicable terminal 2, the other vehicle unit 10, or the source communication unit 200 that is the fixed base station 3 and the communication unit 200 of the own vehicle unit 10 are connected to start communication.
When the transmission source is the terminal 2, the control unit 100 of the terminal 2 may execute a dedicated connection application and add the connection purpose of the application to be connected to the encapsulated packet. Further, the distribution unit 110 may perform authentication or the like with the terminal 2 when establishing a connection.
Further, the communication unit 200 of the unit 10 of the own vehicle does not perform communication with the communication unit 200 of the transmission source that does not match the altitude or the like even in the vicinity based on the information of each sensor.

This will be described with reference to the example of FIG. In FIG. 6 (a), each electric vehicle 1 that is traveling or stopping on the road R on the map communicates with the long-range wireless communication unit 220 and / or the short-range wireless communication unit 210, It shows that a mesh can be formed.
In this example, the state in which communication is possible in the short-range wireless communication unit 210 and the long-range wireless communication unit 220 is indicated by a one-dot chain line, and the state in which communication is possible only by the long-range wireless communication unit 220 is indicated by a dotted line. . The terminal 2, the unit 10 of each electric vehicle 1, and the fixed base station 3 function as communication nodes.

(Step S103)
Next, the distribution unit 110 performs communication reception processing.
Here, the allocating unit 110 communicates with the communication unit 200 of the own unit 10 by wirelessly connecting to a communicable terminal 2, a unit 10 of another vehicle, or a transmission source that is the fixed base station 3. This connection may be the short-range wireless communication unit 210 or the long-range wireless communication unit 220.
Here, the communication unit 200 of the unit 10 receives wireless communication data from the transmission source communication unit 200 in units of packets, for example. The communication unit 200 may store the received data as temporary data 410 in the storage unit 400.

(Step S104)
Next, the distribution unit 110 determines whether or not the long-distance wireless communication unit 220 should perform communication.
Specifically, for example, the distribution unit 110 determines whether or not to transfer the received data to the unit 10 of the other vehicle or the fixed base station 3 via the long-distance wireless communication unit 220. More specifically, the distribution unit 110 estimates the purpose of communication from the received data. On this basis, the distribution unit 110 determines Yes in order to distribute to the long-distance wireless communication unit 220 in the case of communication that needs to perform stable wireless communication as the purpose of communication. In addition, for communication purposes, the distribution unit 110 determines “No” in order to distribute to the short-range wireless communication unit 210 in the case of communication that may be unstable. However, for example, the distribution unit 110 may change the distribution to the long-distance wireless communication unit 220 even if the communication may be unstable based on the sensor information of the sensor group 300. , Yes. For example, the sorting unit 110 may also determine Yes when there is no unit 10 of another vehicle that can be connected by the short-range wireless communication unit 210 in the first place.
In the case of Yes, the distribution part 110 advances a process to step S105.
In No, the distribution part 110 advances a process to step S107.

(Step S105)
When the long-distance wireless communication unit 220 is to communicate, the route construction unit 120 performs a long-distance system route construction process.
The route construction unit 120 constructs an ad hoc communication route for communication by the long-distance wireless communication unit 220.

Referring to FIG. 6B, for example, when the terminal 2 is a smartphone and it is desired to reliably communicate with the fixed base station 3, the route building unit 120 includes the route building unit 120 of the other vehicle unit 10 and the fixed unit. In conjunction with the base station 3, routing is determined. Thereby, the route construction unit 120 constructs a communication route U1 by the long-distance wireless communication unit 220 such as a thick line. A packet can be transmitted from the communication unit 201 of the terminal 2 to the fixed base station 3 through this path U1.
Note that the route construction unit 120 may perform routing so as to select the long-distance wireless communication unit 220 of the unit 10 of another vehicle to be delivered without creating the route U1 of FIG. 6B at a time. Further, the route construction unit 120 may construct a route with the shortest distance using a Dijkstra method or the like based on a distance obtained by scoring the time between each node, ease of spatial connection, or the like.

(Step S106)
Next, the distribution unit 110 performs long-distance system distribution processing.
The distribution unit 110 distributes packets from the transmission source to the long-distance wireless communication unit 220 or the fixed base station 3 of the nearby terminal 2 or the unit 10 of another vehicle corresponding to the constructed route as the transmission destination. Send.
Thereafter, the distribution unit 110 proceeds with the process to step S109.

(Step S107)
Here, when the short-range wireless communication unit 210 should perform communication, the route construction unit 120 performs short-distance system route construction processing.
The route construction unit 120 constructs an ad hoc communication route for communication by the short-range wireless communication unit 210.

  Referring to FIG. 6C, for example, when the terminal 2 is a telemetry terminal 2 such as a smart meter provided in a building and may be unstable, the path construction unit 120 is a thick line. A communication path U2 by the short-range wireless communication unit 210 is constructed. Through this path U2, packets can be transmitted from the communication unit 201 of the terminal 2 to the fixed base station 3 while buffering by the short-range wireless communication unit 210 of the unit 10 of each electric vehicle 1.

(Step S108)
Next, the distribution unit 110 performs short-distance system distribution processing.
The distribution unit 110 distributes and transmits packets from the transmission source mainly corresponding to the constructed route, with the short-range wireless communication unit 210 of the unit 10 of the other nearby vehicle as a transmission destination.
In addition, the distribution unit 110 distributes the route to the long-distance wireless communication unit 220 when the other vehicle in the vicinity cannot move and wirelessly communicate with the short-range wireless communication unit 210 of the other vehicle. The construction unit 120 may reconstruct a route for communication by the short-range wireless communication unit 210.
In the first place, when there is no other vehicle unit 10 that can be connected by the short-range wireless communication unit 210 in the vicinity, the distribution unit 110 can be connected while being stored in the temporary data 410. You may wait until. In this case, when the storage capacity of the temporary data 410 exceeds the specific capacity, or when the time since storage or the number of packet routings exceeds a specific amount, the distribution unit 110 performs long-distance wireless communication. You may distribute to the part 220. FIG.

(Step S109)
Here, the distribution unit 110 performs a payment process.
After transmitting the packet to the transmission destination, the distribution unit 110 refers to the billing data 430 and calculates a usage fee for the terminal 2 and the mobile phone network through communication. This usage fee or the like may be shared among the units 10 on the block chain. Further, the distribution unit 110 may set the settlement result of the block chain, such as virtual currency, in the wallet or the like of the billing data 430.

(Step S110)
Next, the movement control unit 130 performs a movement control process.
The movement control unit 130 controls the movement of the vehicle according to the population density and / or the communication usage rate.

Details of the movement control process will be described with reference to FIG.
For example, as shown in FIG. 7A, in the case where the electric vehicle 1 does not have enough density to construct a mesh in the short-range communication unit 200, the movement control unit 130 cooperates with other vehicles, The movement control is performed so that the electric vehicles 1 are gathered at a position where the population density is high and the mesh is easily constructed. The position where the electric vehicles 1 are gathered may be set according to the frequency of use by the user, the utilization rate of communication, and the like.
As shown in FIG. 7B, each electric vehicle 1 moves, so that a mesh by the short-range communication unit 200 can be constructed, and a load by the mesh in the long-range communication unit 200 can be reduced. It becomes possible. The mesh range may be, for example, a radius range of 1 to 10 km. That is, for example, the range in which each electric vehicle 1 is gathered in a range of 1 to 10 km in radius may be in a density state in which each electric vehicle 1 can easily build a mesh of groups.
Thus, the autonomous mobile base station process according to the embodiment of the present invention is completed.

[Usage example of communication system X]
Here, an example of constructing and using a wireless communication network by a communication system X including the unit 10 of the electric vehicle 1 which is an uninterruptible autonomous mobile body with built-in large-capacity battery of the present embodiment as a base station device. explain.
As described above, in the communication system X of the present embodiment, the electric vehicle 1 includes the unit 10 that can operate as a base station device of a small base station. Moreover, since each unit 10 has a built-in secondary battery 11 with a large capacity, it functions as an uninterruptible base station device. For this reason, a mesh is automatically constructed | assembled because the electric vehicle 1 moves autonomously.
The unit 10 has functions of power generation, power storage, communication, physical distribution, and movement, and autonomously configures a mesh with a moving body incorporating a large-capacity battery. At this time, according to the importance of communication, for example, the 800 MHz band of the “platinum band” of the mobile phone network and the 2.4 GHz band of Wi-Fi or the like may be allocated.
With this configuration, it is possible to provide a high-speed and strong communication network at low cost. It is also possible to build a social system that is resistant to disasters.

Moreover, the electric vehicle 1 in which the unit 10 is mounted as described above can be used for unmanned mobility, cargo transportation, and the like.
In addition, the ownership of each unit 10 may be managed by a block chain. For this reason, the ownership of the unit 10 can be shared, and the burden such as the maintenance cost of the communication system X becomes easy.
It is also possible to monitor road conditions with various sensors and to easily share crime prevention information using image data from a plurality of directions with a vehicle-mounted camera.
For this reason, in the communication system X, it is possible not only to provide an inexpensive communication network, but also to realize a safe society while realizing unmanned mobility and unmanned logistics.

By configuring as described above, the following effects can be obtained.
Conventionally, at the time of a disaster or the like, there is a possibility that the telephone pole collapses, a power failure occurs, the optical fiber network is disconnected, and the wired communication network including the fixed base station 3 cannot be used.
On the other hand, in the automobile ad hoc network as described in Patent Document 1, when the engine of the automobile is turned off, it does not function as a node. For this reason, it could not be used as a base station for performing stable communication.
On the other hand, the communication system X according to the embodiment of the present invention includes a plurality of units 10 that are base station apparatuses and a terminal 2 that communicates via the units 10. Each of the plurality of units 10 includes a secondary battery 11 having a capacity equal to or greater than a specific capacity, a power conversion unit 12 that converts power supplied from the secondary battery 11, and power converted by the power conversion unit 12. In order to move the electric vehicle 1 including the unit 10 autonomously by the communication unit 200 that performs ad hoc communication with the terminal 2 and any one of the plurality of units 10 and the power converted by the power conversion unit 12. And an integral unit 10 in which the drive unit 14 is housed in a housing 15. Further, the terminal 2 includes a communication unit 201 that can communicate with any of the plurality of units 10 in the vicinity.
By configuring the mesh autonomously in the electric vehicle 1 using the unit 10 as a base station device, which is configured as described above and having a unit 10 that has a large capacity secondary battery 11 with a capacity equal to or greater than a specific capacity, stable It becomes possible to construct a communication network. Thereby, even if the fixed base station 3 stops functioning due to a disaster such as an earthquake, communication from the terminal 2 becomes possible. As a result, a disaster-resistant society can be established.
Further, by using the unit 10 that is mass-produced and mounted on the electric vehicle 1 or the like as a base station device, it is possible to reduce the cost of installing a large number of dedicated fixed base stations 3. As a result, it is possible to provide a high-speed and robust wireless communication network at low cost.

Moreover, since the conventional fixed base station 3 needed to have an expensive antenna and a large uninterruptible power supply facility, the installation location was limited and it was difficult to perform necessary and sufficient load distribution. For this reason, in a long-distance wireless communication such as a conventional cellular phone network, the fixed base station 3 has become a bottleneck such as a communication band and stability.
In recent years, the number of wirelessly connected IoT devices has been increasing, and the wireless fixed base station 3 has become a bottleneck for communication.
In contrast, the base station apparatus according to the embodiment of the present invention is characterized in that the specific capacity is 12 kWh or more in total, and a plurality of redundancy may be provided. Here, in the case where a plurality of redundancy is made, the specific capacity may be, for example, 6 kWh × 2 two sets.
If comprised in this way, even if the electric vehicle 1 grade | etc., Has stopped, it will be sufficient capacity | capacitance to operate small base station apparatuses, such as a microcell. For this reason, since the mesh by an uninterruptible small communication base station is always arrange | positioned, it becomes unnecessary to arrange many fixed base stations 3. FIG. Therefore, it becomes possible to eliminate bottlenecks such as communication bandwidth and stability due to a shortage of base stations. That is, it is possible to arrange a sufficiently wireless base station device without restriction on the installation position, and to realize high-speed communication.
In addition, the communication system X according to the embodiment of the present invention can eliminate bottlenecks of communication due to an increase in IoT devices by increasing the number of base station devices that are not fixed.

Also, in recent years, the frequency band of wireless communication has almost been vacant, and has become an “interaction” between users.
On the other hand, in the unit 10 according to the embodiment of the present invention, the communication unit 200 includes a short-range wireless communication unit 210 and a long-distance wireless communication unit 220, which are a plurality of types of wireless communication units. In accordance with the above-described purpose, a distribution unit 110 that distributes to either the short-range wireless communication unit 210 or the long-range wireless communication unit 220 is further provided.
By configuring in this way, communication for performing important control and communication that requires real-time characteristics are distributed to the short-range wireless communication unit 210 for comfortable communication that can be slightly delayed by buffering. Are distributed to the long-distance wireless communication unit 220. As described above, the bandwidth of the wireless communication unit can be saved by allocating to any of a plurality of types of wireless communication units according to the purpose of communication. As a result, it is possible to effectively utilize the frequency band of wireless communication and perform more stable communication.
In addition, in the unit 10, it is possible to perform automatic redistribution of the communication frequency band according to the importance of communication. As a result, the communication in which stability is important can be distributed to the long-range wireless communication unit 220 such as a platinum band, and the communication in which stability is not so important can be distributed to the short-range wireless communication unit 210 such as WiFi. As a result, even if there are a large number of base station apparatuses, it is possible to prevent the long-wave band, which has conventionally been pointed out to be insufficient, from being compressed. Further, for example, it is possible to release the 700 MHz band that has been allocated to conventional wireless communication for automobiles, thereby contributing to efficient redistribution of wireless communication frequency bands. In other words, it is possible to relocate the radio wave resources in a bundle with the same purpose as “collecting water, gas, and water in a common ditch”.

In addition, the base station apparatus according to the embodiment of the present invention is further characterized by further comprising a path construction unit 120 that constructs a path for ad hoc communication corresponding to the purpose of communication.
By configuring in this way, it is possible to perform communication through an optimum route corresponding to the purpose of communication. For this reason, for example, even when communication is performed by the short-range wireless communication unit 210 such as WiFi, it is possible to reliably relay a packet or the like between the units 10 located at a communicable distance and stably communicate. In addition, for communication by the long-range wireless communication unit 220 such as a platinum band in which stability and speed are important, packets can be relayed by relaying fewer units 10, and communication can be performed with less delay. It becomes possible.

In addition, the base station apparatus according to the embodiment of the present invention further includes a movement control unit 130 that controls movement of the own apparatus in accordance with the population density and / or the communication usage rate.
By configuring in this way, it is possible to operate the electric vehicle 1 or the like as a group by autonomous traveling, and to construct an optimal mesh according to population density and usage rate in the range of about 1 to 10 km, for example. It becomes. As a result, a stable wireless communication network according to demand can be realized.

In addition, the base station apparatus according to the embodiment of the present invention further includes a sensor group 300 that measures the environment around the own apparatus, and the sorting unit 110 uses a long-distance wireless communication based on sensor information included in the sensor group 300. The distribution to either the communication unit 220 or the short-range wireless communication unit 210 is changed.
By configuring in this way, according to sensor information, for example, it is possible to appropriately select whether to distribute to either the long-range wireless communication unit 220 or the short-range wireless communication unit 210, and to realize stable communication Can do.

<Other embodiments>
In the above-described embodiment, an example in which the unit 10 mainly relays communication as a base station apparatus has been described.
However, the control board 13 of the unit 10 may be provided with WWW and other server functions. Further, the control board 13 of the unit 10 may have a fog function for performing an intermediate process for performing an intermediate process of a server on the cloud.
With this configuration, the unit 10 can be used as an information processing apparatus capable of performing distributed processing, not just a base station apparatus.
For example, in recent years, the number of stationary IoT devices has increased. Such IoT devices are increasingly connected by wireless communication in addition to those connected by wire to an optical fiber network or the like. By processing such an enormous data transaction for an IoT device by the unit 10, the load on the server on the cloud can be eliminated.

In addition, the control board 13 of the unit 10 can easily perform other distributed processing as an information processing apparatus as described above.
As such distributed processing, for example, statistical processing by various sensor information, image analysis by AI, character and voice recognition, map production processing, PtP data distribution, big data analysis processing, various backup processing, scientific technology calculation, etc. are performed. It is also possible. Statistical processing based on the various sensor information includes, for each electric vehicle 1, traffic conditions including pedestrians and automobiles, road conditions, noise and atmospheric pollution, building, construction, and roadside trees. The surrounding situation of the vehicle, inundation due to heavy rain, etc. may be counted on the map data 420 by image recognition and shared by each unit 10 to be accessible.
In addition, a virtual server is constructed based on the ownership of the unit 10 described above, a time-lending distributed supercomputer process, an accounting process including the block chain process described above, etc. May be configured to distribute. The distribution of the usage fee may be paid as a bond, or may be performed using the above-described virtual currency.
Further, each unit 10 may perform excavation of “coins” or the like by executing virtual currency settlement processing.
These processes can also be executed, for example, when the unit 10 is in a stand-by state where the load of automatic operation is low, or when the processing load is low, such as circulating around in the “sink”.
With this configuration, the unit 10 can be used not only as a base station device but also as a conventional cloud server as “autonomously moving”, “almost always operating”, “always networked computer” It can be used as a social computing resource that complements the network.

Moreover, in the above-described embodiment, the example in which two units 10 are mounted on the electric vehicle 1 and each function as a base station apparatus in cooperation with each other has been described. However, the configuration may be such that only one unit 10 per electric vehicle 1 functions as a base station device. In this case, another unit that is not the base station apparatus may be connected to the unit of the base station apparatus by wire or wirelessly to perform the above-described calculation.
With this configuration, it is possible to distribute the processing load of the base station apparatus to each unit 10 and to further enhance the processing of the fog function and the server function.
Conversely, the unit 10 that does not function as a base station device may be configured to reduce the power consumption of the electric vehicle 1 by stopping the operation of the control board 13 or operating it with power saving.

Further, in the above-described embodiment, the example in which the unit 10 includes the function of the base station device has been described. However, the function of the base station apparatus may be configured to be separately installed in the electric vehicle 1. In this case, the communication unit 200 may be configured to be separately installed in the electric vehicle 1. The communication unit 200 in the unit 10 may be configured to include only one of the short-range wireless communication unit 210 and the long-range wireless communication unit 220. In this case, the distribution unit 110 may perform distribution among the base station device, the short-range wireless communication unit 210, and the long-range wireless communication unit 220 that are separately mounted on the electric vehicle 1.
With this configuration, the configuration of the electric vehicle 1 and the unit 10 can be optimized, and cost reduction can be realized.

Further, in the above-described embodiment, the communication unit 200 includes the short-range wireless communication unit 210 and the long-range wireless communication unit 220, and an example in which the communication is performed is described.
However, the communication unit 200 may include other types of wireless communication units as a plurality of types of wireless communication units. The plurality of types of wireless communication units may be, for example, communication using charging electromagnetic induction or contact charging, satellite communication, voice communication using driving sound, tire vibration, or the like. Further, the distribution unit 110 may perform distribution between wireless communication of the terminal 2 of the passenger in the vehicle and external wireless communication.
By configuring in this way, it is possible to appropriately realize communication using various communication networks.

In the above-described embodiment, the features of the communication system X have been described focusing on the main configuration. However, the combination of the configuration of the functional units in the embodiment is arbitrary. That is, any configuration, a configuration in any combination, or a configuration including all functional units may be used. Moreover, you may further provide the function part which is not described in the above-mentioned embodiment.
With this configuration, the configuration of the communication system X can be flexibly realized.

  In addition, the configuration and operation of the above embodiment are examples, and it is needless to say that the configuration and operation can be appropriately changed and executed without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Electric vehicle 2 Terminal 3 Fixed base station 10, 10-1, 10-2 unit, 10a Battery accommodating part, 10b Drive accommodating part, 11, 11a, 11b Secondary battery, 12 Power conversion part, 13 Control board , 14 drive unit, 15 housing, 20 transmission / reception unit, 30 non-contact power feeding unit, 40 vehicle body, 50 cargo compartment, 100 control unit, 110 distribution unit, 120 route construction unit, 130 movement control unit, 200, 201 communication unit, 210 Short-range wireless communication unit, 220 Long-range wireless communication unit, 300 Sensor group, 400 Storage unit, 410 Temporary data, 420 Map data, 430 Billing data, C cell, R road, S shaft, U1, U2 route, X communication system

Claims (9)

A secondary battery (11) having a capacity greater than a specific capacity;
A power converter (12) for converting the power supplied from the secondary battery (11);
A communication unit (200) that performs ad hoc communication with another device using the power converted by the power conversion unit (12);
A base unit including an integrated unit (10) in which a drive unit (14) for autonomously moving the own device by the power converted by the power conversion unit (12) is housed in a housing (15). Station equipment. The base station apparatus according to claim 1, wherein the specific capacity is 12 kWh or more, and a plurality of the specific capacities may be made redundant. The communication unit (200) includes a plurality of types of wireless communication units,
The base station apparatus according to claim 1, further comprising a distribution unit (110) that distributes to any of the plurality of types of wireless communication units corresponding to the purpose of communication. The plurality of types of wireless communication units are:
A short-range wireless communication unit (210) capable of short-range communication;
The base station apparatus according to claim 3, further comprising a long-range wireless communication unit (220) capable of communicating over a longer distance than the short-range wireless communication unit (210). The base station apparatus of any one of Claims 1 thru | or 4 further provided with the path | route construction part (120) which constructs | assembles the path | route of the said ad hoc communication corresponding to the objective of communication. The base station apparatus of any one of Claims 1 thru | or 5 further provided with the movement control part (130) which controls the movement of an own apparatus according to population density and / or the usage rate of communication. It further comprises a sensor (300) for measuring the environment around the device itself,
The base station apparatus according to any one of claims 1 to 6, wherein the distribution unit (110) changes distribution to the plurality of types of wireless communication units based on information of the sensor (300). A communication system (X) including a plurality of base station devices (10) and a terminal (2) communicating via the base station device (10),
Each of the plurality of base station devices (10)
A secondary battery (11) having a capacity greater than a specific capacity;
A power converter (12) for converting the power supplied from the secondary battery (11);
A communication unit (200) that performs ad hoc communication with either the terminal (2) or the plurality of base station devices (10) by using the power converted by the power conversion unit (12),
An integrated unit (10) in which a drive unit (14) for autonomously moving the device by the power converted by the power conversion unit (12) is housed in a housing (15);
The terminal (2)
A communication system comprising a communication unit (201) that communicates with any of the plurality of base station devices in the vicinity. A communication method executed by a communication system (X) including a plurality of base station apparatuses (10) and a terminal (2) communicating via the base station apparatus (10),
Each of the plurality of base station devices (10)
A secondary battery (11) having a capacity greater than a specific capacity;
A power converter (12) for converting the power supplied from the secondary battery (11),
The power converted by the power conversion unit (12) performs ad hoc communication with either the terminal (2) or the plurality of base station devices (10). The power converted by the power conversion unit (12) , Move your device autonomously,
The terminal (2)
A communication method for communicating with any of the plurality of base station devices (10) located nearby.

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