Radio wave re-radiation system

Abstract

To provide a radio wave re-radiation module or the like that enables a user to easily construct a network that enables connection with an external communication system in a closed network space or the like, and suppresses restrictions on the installation position.SOLUTION: A radio wave re-radiation module includes an external processing device that receives external radio waves radiated from the outside of a structure and generates a transmission signal from the external radio waves, a transmission unit that transmits a transmission signal from the external processing device, and an internal processing device that converts the transmission signal from the transmission unit into an internal radio wave, in which the output power of the internal radio wave is within an allowable value of the legal regulation, and that is possible to move to a position where wireless communication with a radio relay device that can receive the internal radio wave is possible, and emits radio waves.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a radio wave re-radiation module and a radio wave re-radiation system. [Background technology]

[0002] When using IoT devices on the Internet, they need to be connected to a network. In this case, if there is no network connected to FTTH (Fiber To The Home), a mobile router using a mobile communication network may be used to connect the IoT device to the network. In addition, when using a mobile communication network, communication speeds were traditionally slower than with FTTH, but the fifth generation mobile communication system has improved communication speeds, and the use of mobile communication networks is increasing. On the other hand, when using a mobile communication network, a repeater capable of transmitting amplified signals may be used to maintain a network connection.

[0003] For example, the mobile router in Patent Document 1 includes a LAN interface for connecting to a mobile terminal device, a mobile communication interface for wirelessly connecting to a base station, and a conversion processing unit for converting between the LAN interface and the mobile communication interface. The mobile router also includes a central processing unit for performing overall control and a memory for storing data, and discloses a configuration in which the central processing unit determines the availability of air frames and waits to transmit air frames based on a timer stored in the memory. The above configuration saves power in the mobile router and extends the battery life. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2012-175669 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, since the radio signals of a mobile communication system using a high-frequency carrier such as a quasi-millimeter wave or higher, such as a high-SHF band, do not easily reach indoors, when using a mobile router, it is necessary to install it in a position where the radio signals of the mobile communication system can reach sufficiently. However, since a power source is required to supply the power required for the mobile router, there is a problem that the installation location of the mobile router is limited. In addition, when a repeater is adopted, the transmission power needs to be increased, so in order to comply with legal regulations such as the Radio Law, the mobile communication carrier must install the repeater and obtain the installation permission. Furthermore, in the high SHF band or higher, it is necessary to ensure line-of-sight communication in order to deliver the radio signal re-radiated from the repeater to the mobile device or IoT device, and the installation location of the repeater is also limited. Therefore, from the viewpoint of the Radio Law and communication confirmation, users cannot freely install repeaters, so there is a problem that it is not easy to build a network that enables connection to a mobile communication system in a closed network space. Note that the above problem is not limited to the mobile communication system, but is a problem that occurs in the interface between the mobile communication system and an external communication system including a fixed wireless access system.

[0006] The present invention has been made in consideration of the problems inherent in the conventional technology, and an object of the present invention is to provide a radio wave re-radiation module and a radio wave re-radiation system that enable a user to easily build a network that enables connection to an external communication system in a closed network space or the like, and that has fewer limitations on the installation location. [Means for solving the problem]

[0007] A radio wave re-radiation module according to an embodiment of the present invention preferably comprises an external processing device that receives external radio waves radiated from outside a structure and generates a transmission signal from the external radio waves, a transmission unit that transmits the transmission signal from the external processing device, and an internal processing device that converts the transmission signal from the transmission unit into internal radio waves, the output power of the internal radio waves being within the allowable value set by legal regulations, that is movable to a position where wireless communication with a radio wave repeater device capable of receiving the internal radio waves is possible, and that radiates the internal radio waves.

[0008] A radio wave re-radiation system according to another aspect of the present invention comprises the radio wave re-radiation module of the above aspect and the radio wave repeater, wherein the radio wave repeater functions as a router for the external radio waves and as an access point for the internal radio waves to a wireless electronic device located inside the structure, and it is preferable that the frequency of the radio waves radiated from the radio wave repeater is the same as or lower than the frequency of the internal radio waves. Effect of the Invention

[0009] According to the present invention, it is possible to provide a radio wave re-radiation module and a radio wave re-radiation system that have reduced restrictions on installation location and enable users to easily construct a network that enables connection to an external communication system in a closed network space, etc. [Brief description of the drawings]

[0010] [Figure 1] 1 is a schematic diagram showing an example of a radio wave re-radiation system according to an embodiment of the present invention; [Diagram 2] FIG. 11 is a schematic diagram showing another example of a radio wave re-radiation system according to the present embodiment. [Diagram 3] 1 is a block diagram showing an example of a radio wave re-radiation module according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, an example of a radio wave re-radiation module and a radio wave re-radiation system according to the present embodiment will be described in detail with reference to the drawings. Note that the embodiments described below are comprehensive or specific examples. The numerical values, shapes, materials, components, installation positions and connection forms of the components shown in the following embodiments are examples and are not intended to limit the present disclosure. In addition, among the components in the following embodiments, components that are not described in the independent claims showing the highest concept are described as optional components. Furthermore, the dimensional ratios in the drawings are exaggerated for the convenience of explanation and may differ from the actual ratios.

[0012] Furthermore, the following embodiments and their modified examples may include similar components, and the similar components will be given the same reference numerals and redundant explanations will be omitted.

[0013] (Overview of the operation of the radio wave re-radiation module and radio wave re-radiation system) The outline of a radio wave re-radiation module 100 and a radio wave re-radiation system 1000 will be described with reference to FIGS.

[0014] FIG. 1 is a schematic diagram showing an image of a radio wave re-radiation system 1000 according to the present embodiment. FIG. 1 shows a structure 10a such as a house or building, wireless electronic devices 300a, 300b, 300c, etc., such as smartphones and mobile phones, located inside the structure 10a, and a radio wave relay device 200a that wirelessly communicates with the wireless electronic devices 300a, 300b, 300c, etc. Also shown is a situation in which an external radio wave 20a is radiated from a wireless base station 40a of a mobile communication system or the like, and the external radio wave 20a is received by an external antenna 111a. In order for the radio wave relay device 200a to wirelessly communicate with the wireless electronic devices 300a, 300b, 300c, etc., it is necessary to receive the external radio wave 20a radiated from the wireless base station 40a, etc., outside the structure 10a. However, due to the frequency of the external radio wave 20a and the characteristics of the structure 10a, the external radio wave 20a may not have sufficient strength or SNR inside the structure 10a, and the radio wave repeater 200a may not be able to receive the external radio wave 20a. In such a situation, it is necessary to move the radio wave repeater 200a inside the structure 10a to search for a position where the external radio wave 20a can be received. However, depending on the situation, it may not be possible to find a position where the external radio wave 20a can be received for the radio wave repeater 200a. In addition, since the radio wave repeater 200a needs a power source, a new power source may be provided at the installation position of the radio wave repeater 200a, or the installation position of the radio wave repeater 200a may be restricted to a position where power can be supplied.

[0015] However, the radio wave re-radiation module 100a according to the present embodiment may be able to solve the above problem. FIG. 1 shows a part of the configuration of the radio wave re-radiation module 100a according to the present embodiment. The external antenna 111a of the radio wave re-radiation module 100a receives the external radio wave 20a, and the transmission unit 120a transmits the external radio wave 20a. The internal antenna 133a re-radiates the internal radio wave 30a to the radio wave repeater 200a, so that the radio wave repeater 200a can receive the external radio wave 20a. If the external radio wave 20a is a radio signal of a mobile communication system, the radio wave repeater 200a can maintain a wireless communication connection of the mobile communication system with the wireless electronic devices 300a, 300b, 300c, etc.

[0016] In addition, the internal antenna 133a can be installed near or very close to the radio wave repeater 200a. Therefore, spatial attenuation due to re-radiation is suppressed, and communication with the radio wave repeater 200a is possible even when the radio wave power of the internal radio wave 30a re-radiated from the internal antenna 133a is set within the allowable range of radio wave laws such as the Radio Law. In addition, it is possible to install the radio wave re-radiation system 1000a without being restricted by radio wave laws. That is, when re-radiating radio waves, radio waves are re-radiated with radio wave power that does not violate the Radio Law without using a high-gain amplifier. In addition, although there is some overlap with the above explanation, when a repeater is used, in order to re-radiate radio waves from the repeater and deliver them to the mobile router, it is necessary to increase the transmission power, so the repeater may be equipped with a high-gain amplifier. Therefore, if the transmission power becomes high, the Radio Law requires the operator to carry out installation work such as determining the position of the repeater, which may make it difficult for the user to freely place it. In particular, in the forward millimeter wave band used in 5G, the amount of attenuation is large even in the air, so a high-gain amplifier is often provided in the repeater. In addition, since the repeater is installed taking into consideration interference with direct waves, the installation location may be limited. However, as described above, the radio wave re-radiation system 1000a re-radiates radio waves with radio power that does not violate the Radio Law without using a high-gain amplifier when re-radiating radio waves. Therefore, the radio wave re-radiation system 1000a can be freely arranged by the user. In addition, since the transmission unit 120a of the radio wave re-radiation system 1000a according to this embodiment can use optical fiber, it is possible to configure the system with a significantly superior installation tolerance for wiring. According to the above configuration, even if there is no freedom in the arrangement of the repeater, it is possible to easily deliver external radio waves to the repeater due to the highly flexible arrangement characteristics of the radio wave re-radiation module.

[0017] Furthermore, the space where the radio signal of the mobile communication system does not reach is not limited to an office or a home, but may occur in a closed network space of a moving body such as the inside of a car. FIG. 2 is a schematic diagram showing an overview of the case where the radio wave re-radiation system 1000b of this embodiment is applied when the radio signal of the mobile communication system does not reach inside a vehicle such as a car. FIG. 2 also shows a part of the configuration of the radio wave re-radiation module 100b according to this embodiment. The external antenna 111b of the radio wave re-radiation module 100b receives the external radio wave 20b radiated from the base station 40b, transmits the external radio wave 20b by the transmission unit 120b, and re-radiates the external radio wave 20b from the internal antenna 133b to the radio wave relay device 200b. This enables the radio wave relay device 200a to receive the external radio wave 20a. The external antenna 111b can be used in common with an external antenna installed in the vehicle. In addition, the transmission unit 120b can be wired inside the vehicle interior, but at least a part of the transmission unit 120b can be installed inside the vehicle body so as not to be visible from the vehicle interior and not to interfere with the user's movements.

[0018] A wireless LAN network can be constructed in the vehicle by relaying and transmitting a radio signal of a mobile communication system received outside the vehicle to the inside of the vehicle by the radio wave re-radiation system 1000b and re-radiating it by the radio wave repeater 200b installed in the vehicle or brought in by the user. The wireless electronic devices 300d, 300e, etc. can be smartphones, mobile phones, etc. carried by the user. The wireless electronic devices 300d, 300e, etc. can wirelessly communicate with the radio wave repeater 200b. As described above, the internal antenna 133b can be installed in the vicinity or very close proximity to the radio wave repeater 200b. Therefore, it is possible to set the radio wave power of the internal radio wave 30b re-radiated from the internal antenna 133b within the permissible range of the legal regulations regarding radio waves, and it is also possible to install the radio wave re-radiation system 1000b without being restricted by the legal regulations regarding radio waves. In other words, when re-radiating radio waves, radio waves are re-radiated with radio wave power that does not violate the Radio Law without using a high-gain amplifier.

[0019] The radio wave re-radiation system 1000a and the radio wave re-radiation system 1000b may be collectively referred to as the radio wave re-radiation system 1000. Similarly, the radio wave re-radiation module 100a and the radio wave re-radiation module 100b may be collectively referred to as the radio wave re-radiation module 100. Furthermore, the radio wave repeater 200a and the radio wave repeater 200b may be collectively referred to as the radio wave repeater 200. Furthermore, the wireless electronic devices 300a, 300b, 300c, 300d, 300e, etc. may be collectively referred to as the wireless electronic devices. Note that the radio wave repeater 200 and the wireless electronic device 300 communicate wirelessly according to the so-called Wi-Fi (registered trademark) standard, and the external radio wave emitting device (not shown) and the radio wave repeater 200 can communicate wirelessly according to the so-called mobile wireless communication standard such as 5G. Furthermore, the external radio wave emitting device (not shown) may be a base station of a mobile wireless communication system.

[0020] (Configuration of radio wave re-radiation module) An example of the configuration of the radio wave re-radiation module 100 will be described with reference to FIG.

[0021] The radio wave re-radiation module 100 includes an external processing device 110, a transmission unit 120, and an internal processing device 130. The radio wave re-radiation module 100 mainly targets radio waves in the high SHF band, such as quasi-millimeter waves and millimeter waves, but can also target radio waves in frequency bands above or below the gigahertz band.

[0022] The external processing device 110 includes an external antenna 111 and an external processing unit 112. The external antenna 111 is provided on the external space side of the structure, and is capable of receiving radio waves emitted from an external radio wave emission device such as a wireless base station. The type of the external antenna 111 is not particularly limited, but a directional antenna and an omnidirectional antenna can be used. The directional antenna may include an array antenna and an adaptive array antenna. In addition, the number of external antennas 111 does not need to be limited to one. For example, the external antenna 111 may be one for transmission and reception, or may be configured to have one each for transmission and reception.

[0023] The external processing unit 112 may include a function of performing directivity control processing when the external antenna 111 is a directional antenna, and a function of an amplifier. The amplifier may be arranged to compensate for transmission loss in the transmission path and suppress deterioration of the transmission signal. The amplifier amplifies the external signal obtained by converting the received external radio wave 20 into an electric signal by the external antenna 111. The amplification degree of the amplifier may be set so that there is no attenuation of the signal from the external antenna 111 to the output of the re-radiation processing unit 132. In other words, the radio wave re-radiation module 100 may be designed so that the attenuation of the signal from the external antenna 111 to the output of the re-radiation processing unit 132 is "0". The frequency band and modulation method of the external radio wave 20 are the same as those of the internal radio wave 30. The radio wave relay device 200 such as a mobile router may also have a function of radiating to the wireless electronic device 300 radio waves whose frequency band and modulation method have been changed or transitioned from the received internal radio wave 30. The wireless electronic device 300 has a function of directly performing wireless communication with an external radio wave radiating device such as a base station of a mobile wireless communication system. However, the wireless electronic device 300 can also perform wireless communication with the radio wave repeater 200 using a high-speed communication standard such as WI-FI. Therefore, it is possible to stably maintain wireless communication between the wireless electronic device 300 and the radio wave repeater 200, and as a result, it may be possible to maintain stable and high-speed wireless communication between the external radio wave emitting device and the wireless electronic device 300.

[0024] Furthermore, when an optical cable is used for the transmission unit 120, the external processing unit 112 may include an electrical / optical conversion unit that is a light emitting element such as an LED or a laser.

[0025] The external processing device 110 can also be configured with an amplifier of the external antenna 111 and the external processing unit 112. When power is supplied to the external processing device 110, power can be supplied from any position via a metal cable, and at least a part of the power supply metal cable can be bundled together with the transmission unit 120 for wiring. Power can also be supplied from the external processing device 110 side including the external antenna 111 or from the internal processing device 130 side.

[0026] The transmission section 120 may be an optical cable or a metal cable. When the transmission section 120 is an optical cable, it may be a broadband GI type multimode optical fiber or a single mode optical fiber. When the transmission section 120 is an optical cable, it is also possible to use a quartz-based optical fiber, a plastic-based optical fiber, or an optical fiber made of a mixture of materials. There are cases where it is preferable that the transmission section 120 is particularly flexible. With respect to the flexibility of wiring, optical fibers have sufficient flexibility whether the material is plastic or quartz, and rarely cause difficulties in wiring.

[0027] Plastic optical fibers (POF) are pliable and resistant to bending due to the flexibility of the resin, and the material is inexpensive, and the connection accuracy of the optical fiber is easier than that of quartz-based optical fibers. Furthermore, the use of fluorinated polymers enables high-speed communication that exceeds that of quartz-based optical fibers. However, this embodiment does not exclude quartz-based optical fibers from the optical fibers used.

[0028] Furthermore, the transmission unit 120 may be a single cable, but multiple cables may also be used. Furthermore, as described above, the transmission unit 120 may include a power supply cable. The external processing device 110 may be the device to which power is supplied from the power supply cable. However, this does not exclude the internal processing device 130 from the devices to which power is supplied from the power supply cable. For example, the internal radio waves 30 received by the internal antenna 133 may be amplified by an amplifier included in the internal processing device 130. Note that the internal processing device 130 may not include an amplifier.

[0029] The internal processing device 130 includes an internal processing unit 131 to which the transmission signal transmitted by the transmission unit 120 is input, a re-radiation processing unit 132 , and an internal antenna 133 .

[0030] When an optical cable is used for the transmission section 120, the internal processing section 131 may include an optical / electrical conversion section that is a light receiving element such as a photodiode.

[0031] The re-radiation processing unit 132 re-radiates the external radio waves 20 received by the external processing device 110 as internal radio waves 30 to the radio wave relay device 200 functioning as a mobile router or repeater. The power of the internal radio waves 30 is within the range permitted by legal regulations such as the Radio Law, and is within the power range that does not require installation by the carrier. Since the transmission unit 120 can be freely routed, the re-radiation processing unit 132 can be installed close to the radio wave relay device 200, and the strength of the internal radio waves 30 can be sufficiently reduced. For example, there are cases where there is no radio wave obstruction between the re-radiation processing unit 132 and the radio wave relay device 200, making it possible to achieve a state in which line-of-sight wireless communication is possible.

[0032] In addition, when the radio wave repeater 200 is not installed at a flexible position and is far from the internal radio wave 30, an amplifier may be included to amplify the power of the internal radio wave 30 within the scope of legal regulations. In addition, when line-of-sight wireless communication is not possible between the radio wave repeater 200 and the wireless electronic device 300, the frequency band of the radio wave that the radio wave repeater 200 radiates to the wireless electronic device 300 may be a microwave band or other frequency. By using the microwave band or other frequency, it may be possible to maintain stable and good wireless communication between the radio wave repeater 200 and the wireless electronic device 300. In addition, transmission and reception are possible by using the same modulation method for the microwave band for the radio wave repeater 200 and the wireless electronic device 300.

[0033] The re-radiation processing unit 132 may be capable of measuring the EVM of the output signal of the internal processing unit 131. When the measured EVM value is large and an increase in the error rate is expected, it may be possible to transmit an improvement request signal to the external processing unit 112 to increase the amplification degree. When a positive response signal cannot be received from the radio wave repeater 200, the re-radiation processing unit 132 may increase the transmission power of the internal radio wave 30 within the scope of legal regulations. An example of the above-mentioned legal regulations is the Radio Law, but legal regulations are not limited to the Radio Law. The internal radio wave 30 may be a so-called weak radio wave signal, etc.

[0034] The internal antenna 133 is provided on the internal space side of the structure, and is capable of transmitting internal radio waves 30 to a radio wave repeater 200 such as a mobile router, and receiving radio waves emitted from the radio wave repeater 200. The type of the internal antenna 133 is not particularly limited, but a directional antenna or an omnidirectional antenna can be used. The directional antenna may include an array antenna and an adaptive array antenna.

[0035] The radio wave repeater 200, which receives the internal radio wave 30 radiated from the internal antenna 133, transmits information obtained from the internal radio wave 30 to the wireless electronic device 300 by radio wave. The radio wave radiated from the wireless electronic device 300 is received by the radio wave repeater 200, and the radio wave radiated from the radio wave repeater 200 is received by the internal antenna 133. The radio wave received by the internal antenna 133 is then transmitted from the external antenna 111 to an external radio station or the like via the internal processing device 130, the transmission unit 120, and the external processing device 110. In this way, communication between the external radio station or the like and the wireless electronic device 300 in the structure 10 is possible. The radio wave repeater 200 functions as a router and an access point, and can form a network with the wireless electronic device 300. In addition, when the radio wave strength received by the internal antenna 133 from the radio wave repeater 200 is not sufficient, an amplifier can be provided in the re-radiation processing unit 132 or the internal processing unit 131.

[0036] (Variation 1) In the above embodiment, the external radio wave 20 has been described mainly as radio waves in a mobile communication system, but in this embodiment, the external radio wave 20 is not limited to radio waves in a mobile communication system. For example, the configuration of this embodiment can be adopted on the condition that the router is also compatible with wireless signals used for transmission from a wired network, such as a fixed wireless access system using quasi-millimeter waves or millimeter waves, to the final terminal at the end.

[0037] According to the configuration described above, it is possible to connect to a mobile communication system using a carrier wave of a high frequency band such as a quasi-millimeter wave or a millimeter wave that enables high-speed communication, without having to worry about the installation position of a radio wave relay device such as a mobile router. Also, according to the configuration described above, it becomes easy to build a network such as a wireless LAN in a closed network space such as indoors or in a vehicle. In particular, when building a network such as a wireless LAN inside a moving object, it becomes possible to effectively use the radio wave re-radiation module 100 of this embodiment.

[0038] Furthermore, the present invention is not limited to mobile communication systems, and by using an optical cable or the like as the transmission line of this embodiment, it becomes easy to introduce the transmission line into a closed network space or the like in a system such as a fixed wireless access system.

[0039] The features of the radio wave re-radiation module 100 and the radio wave re-radiation system 1000 according to this embodiment will be described below.

[0040] The radio wave re-radiation module 100 according to the first aspect of the present disclosure preferably includes an external processing device 110 that receives external radio waves 20 radiated from the outside of the structure 10 and generates a transmission signal from the external radio waves, and a transmission unit 120 that transmits the transmission signal from the external processing device 110. The radio wave re-radiation module 100 preferably includes an internal processing device 130. The internal processing device 130 preferably converts the transmission signal from the transmission unit 120 into internal radio waves 30, the output power of the internal radio waves is within the legally permitted value, the internal radio waves are movable to a position where wireless communication is possible with a radio wave relay device 200 that can receive the internal radio waves, and the internal radio waves are radiated.

[0041] According to the present disclosure, it is possible to provide a radio wave re-radiation module with reduced restrictions on installation location, enabling users to easily build a network that enables connection to an external communication system in a closed network space, etc.

[0042] It is preferable that the frequency band of the external radio waves 20 and the frequency band of the internal radio waves 30 of the radio wave re-radiation module 100 according to the second aspect of the present disclosure are the same, and that the modulation method of the external radio waves 20 and the modulation method of the internal radio waves 30 are the same.

[0043] According to the present disclosure, it is possible to easily build a network in a closed network space from the space where the base station is located, without performing processing such as waveform conversion and frequency conversion of radio waves having a carrier wave in a high frequency band such as 5G adopted in a mobile communication system. In particular, radio waves having a carrier wave in a high frequency band such as 5G have a strong tendency to travel in a straight line and are attenuated greatly not only by gases such as air but also by solids. However, the radio wave re-radiation module according to the present disclosure makes it possible to efficiently deliver radio waves to areas where it is difficult for radio waves to reach, without falling under legal regulations.

[0044] The external processing device 110 of the radio wave re-radiation module 100 according to the third aspect of the present disclosure preferably includes an external antenna 111 for generating a transmission signal by converting the external radio wave 20 into an electric signal, and an amplifier for amplifying the transmission signal. The amplification degree of the amplifier is preferably set so that the output power of the internal radio wave 30 falls within the allowable range of legal regulations.

[0045] According to the present disclosure, it is possible to keep the output power of the internal radio waves 30 within the legal limits of radio waves, etc., and it is possible to freely change the location of the external processing device 110 or the internal processing device 130 of the radio wave re-radiation module 100 by the transmission unit 120. In addition to the location of the radio wave re-radiation module 100, it is also possible to freely change the location of the radio wave repeater 200, as long as the radio wave repeater 200 is close to the internal antenna 133 of the radio wave re-radiation module 100. In addition, by freely arranging the radio wave repeater 200, it may be possible to facilitate wireless communication between the radio wave repeater 200 and the wireless electronic device 300.

[0046] The external radio wave 20 of the radio wave re-radiation module 100 according to the fourth aspect of the present disclosure is a radio wave defined in a mobile communication system or a radio wave defined in a fixed wireless access system, and is preferably at a frequency equal to or higher than the high SHF band, such as the quasi-millimeter wave band.

[0047] According to the present disclosure, the external radio waves 20 are not limited to high-frequency radio waves defined in mobile communication systems, and the radio wave re-radiation module 100 of this embodiment can be applied to wireless systems that use high-frequency radio waves that are difficult to reach inside a structure.

[0048] The radio wave re-radiation module 100 according to the fifth aspect of the present disclosure preferably includes an external processing device 110 that receives external radio waves 20 radiated from the outside of the structure 10 and generates a transmission signal from the external radio waves, and a transmission unit 120 that transmits the transmission signal from the external processing device 110. The radio wave re-radiation module 100 preferably includes an internal processing device 130. The internal processing device 130 is preferably a radio wave relay device 200 configured to be capable of receiving external radio waves, movable to a position where it can wirelessly communicate with a radio wave relay device capable of receiving internal radio waves 30, and converts the transmission signal from the transmission unit 120 into an internal radio wave and radiates the internal radio wave.

[0049] According to the present disclosure, it is possible to provide a radio wave re-radiation module with reduced restrictions on installation location, enabling users to easily build a network that enables connection to an external communication system in a closed network space, etc.

[0050] A radio wave re-radiation system 1000 according to a sixth aspect of the present disclosure preferably includes the radio wave re-radiation module 100 according to any one of the first to fourth aspects, and a radio wave repeater 200. The radio wave repeater 200 preferably functions as a router for the external radio waves 20, and as an access point for the internal radio waves 30 to the wireless electronic device 300 located inside the structure 10. The frequency of the radio waves radiated from the radio wave repeater 200 is preferably the same as or lower than the frequency of the internal radio waves 30.

[0051] According to the present disclosure, it is possible to provide a radio wave re-radiation system with reduced restrictions on installation location, which allows a user to easily build a network that enables connection to an external communication system in a closed network space, etc. Also, if the frequency of the radio wave radiated from the radio wave repeater 200 is lower than that of the internal radio wave 30, it is possible to make the wireless communication between the radio wave repeater 200 and the wireless electronic device 300 more stable.

[0052] The radio wave repeater 200 of the radio wave re-radiation system 1000 according to the embodiment of the present disclosure is preferably a mobile router.

[0053] According to the present disclosure, even when the radio wave relay device 200 is a mobile router, it is possible to provide a radio wave re-radiation system with reduced restrictions on installation location, enabling a user to easily construct a network that enables connection to an external communication system in a closed network space, etc.

[0054] A radio wave re-radiation system 1000 according to a seventh aspect of the present disclosure preferably includes the radio wave re-radiation module 100 according to any one of the first to fourth aspects, and a radio wave repeater 200. The radio wave repeater 200 preferably functions as a repeater for the wireless electronic device 300 inside the structure 10.

[0055] According to the present disclosure, it is possible to provide a radio wave re-radiation module and a radio wave re-radiation system with reduced restrictions on installation locations, which allows a user to easily build a network that enables connection to an external communication system in a closed network space, etc. Also, while there are legal regulations that require wireless communication carriers to install repeaters, the radio wave re-radiation module 100 of the present disclosure may allow a user to freely install it near a repeater without being restricted by legal regulations.

[0056] The radio wave re-radiation system 1000 relating to the eighth aspect of the present disclosure further includes a wireless electronic device 300, which preferably has the function of receiving external radio waves 20 and also wirelessly communicating with an external radio wave radiating device that transmits external radio waves 20 from outside the structure 10.

[0057] According to the present disclosure, even when a wireless electronic device such as a smartphone owned by a user is moved to a closed network space, etc., a network that enables connection to an external communication system can be easily constructed, which may alleviate restrictions on the movement location of the wireless electronic device 300.

[0058] It is preferable that the wireless electronic device 300 and the radio wave relay device 200 of the radio wave re-radiation system 1000 according to the ninth embodiment of the present disclosure are wirelessly connected by Wi-Fi (registered trademark).

[0059] According to the above configuration, it is possible to build a wireless network with a proven track record of stable communication in a closed network space. In addition, it may be possible to improve the degree of freedom regarding the location where the radio relay device 200 is installed.

[0060] It is preferable that the structure 10 of the radio wave re-radiation system 1000 relating to the tenth aspect of the present disclosure is a vehicle, the external processing device 110 utilizes the vehicle's antenna, and at least a portion of the transmission section 120 is arranged between the inner surface of the interior space of the vehicle and the outer surface of the vehicle.

[0061] According to the present disclosure, it is possible to easily build a network that enables connection to an external communication system in a closed network space inside a vehicle such as an automobile. It is also possible to connect a wireless electronic device such as a user's smartphone to a system such as a mobile communication system inside a moving body without the user being aware of the presence of a radio wave re-radiation system.

[0062] (Supplementary embodiment) The block diagrams used in the description of the above-mentioned embodiments show functional blocks. The method of realizing each functional block is not particularly limited. For example, each functional block may be realized using one device that is physically or logically coupled, or may be realized using two or more devices that are physically or logically separated and directly or indirectly connected to each other.

[0063] Furthermore, the information described in this disclosure may be expressed using absolute values, may be expressed using relative values ​​from a predetermined value, or may be expressed using other corresponding information.

[0064] The names used in the above information are not limiting in any way.

[0065] Each aspect / embodiment described in the present disclosure may be used alone, in combination, or switched depending on the implementation.

[0066] Although the embodiments have been described in detail with reference to the drawings, the present invention is not limited to the contents described in the above embodiments. Furthermore, the components described above include those that a person skilled in the art can easily imagine and those that are substantially the same. Furthermore, the configurations described above can be appropriately combined. Furthermore, various omissions, substitutions, or modifications of the configurations can be made without departing from the gist of the present invention. [Explanation of symbols]

[0067] 10, 10a, 10b Structure 20, 20a, 20b External radio waves 30, 30a, 30b internal radio waves 100 Radio wave re-radiation module 110 External processing device 120 Transmission Unit 130 Internal processing unit 200, 200a, 200b Radio wave repeater 300, 300a, 300b, 300c, 300d, 300e wireless electronic equipment 1000, 1000a, 1000b Radio Re-radiation Systems

Claims

1. A radio wave re-radiation system having a radio wave re-radiation module and a radio wave relay device, The radio wave re-radiation module includes: an external processing device that receives an external radio wave radiated from outside the structure and generates a transmission signal from the external radio wave; a transmission unit that transmits the transmission signal from the external processing device; an internal processing device that converts the transmission signal from the transmission unit into an internal radio wave, the output power of the internal radio wave is within a legally permitted value, the internal radio wave is movable to a position where wireless communication with the radio wave relay device that can receive the internal radio wave is possible, and the internal processing device radiates the internal radio wave; The radio wave repeater functions as a router for the external radio waves and functions as an access point for the internal radio waves for wireless electronic devices located inside the structure, and the frequency of the radio waves radiated from the radio wave repeater is the same as or lower than the frequency of the internal radio waves; The wireless electronic device is capable of demodulating the radio waves received from the radio wave repeater. Radio wave re-radiation system.

2. 2. The radio wave re-radiation system according to claim 1, wherein a frequency band of the external radio wave and a frequency band of the internal radio wave are the same, and a modulation method of the external radio wave and a modulation method of the internal radio wave are the same.

3. 3. The radio wave re-radiation system according to claim 1 or 2, wherein the external processing device includes an external antenna that generates the transmission signal by converting the external radio waves into an electrical signal, and an amplifier that amplifies the transmission signal, and the amplification degree of the amplifier is such that the output power of the internal radio waves falls within the allowable range of the legal regulations.

4. 4. The radio wave re-radiation system according to claim 1, wherein the external radio wave is a radio wave defined in a mobile communication system or a radio wave defined in a fixed wireless access system, and has a frequency in the high SHF band or higher.

5. an external processing device that receives an external radio wave radiated from outside the structure and generates a transmission signal from the external radio wave; a transmission unit that transmits the transmission signal from the external processing device; a radio wave relay device configured to be able to receive the external radio waves, movable to a position where wireless communication with the radio wave relay device capable of receiving internal radio waves is possible, the internal processing device converts the transmission signal from the transmission unit into the internal radio waves, and radiates the internal radio waves; The radio wave repeater functions as a router for the external radio waves and functions as an access point for the internal radio waves for wireless electronic devices located inside the structure, and the frequency of the radio waves radiated from the radio wave repeater is the same as or lower than the frequency of the internal radio waves; The wireless electronic device is capable of demodulating the radio waves received from the radio wave repeater. Radio wave re-radiation system.

6. The radio wave re-radiation system according to claim 1 , wherein the radio wave relay device functions as a repeater for wireless electronic devices inside the structure.

7. The wireless electronic device further comprises: The radio wave re-radiation system according to claim 6 , wherein the wireless electronic device has a function of receiving the external radio wave and wirelessly communicating with an external radio wave emitting device that transmits the external radio wave from outside the structure.

8. The radio wave re-radiation system according to claim 6 or 7, wherein the wireless electronic device and the radio wave relay device are wirelessly connected by Wi-Fi (registered trademark).

9. The radio wave re-radiation system according to any one of claims 6 to 8, wherein the structure is a moving body, the external processing device utilizes an antenna provided on the moving body, and at least a portion of the transmission section is positioned between an inner surface of the interior space of the moving body and an outer surface of the moving body.

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