WO2024142824A1 - 電波制御板の設置方法および通信システム - Google Patents

電波制御板の設置方法および通信システム Download PDF

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Publication number
WO2024142824A1
WO2024142824A1 PCT/JP2023/043781 JP2023043781W WO2024142824A1 WO 2024142824 A1 WO2024142824 A1 WO 2024142824A1 JP 2023043781 W JP2023043781 W JP 2023043781W WO 2024142824 A1 WO2024142824 A1 WO 2024142824A1
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WO
WIPO (PCT)
Prior art keywords
radio wave
wave control
control plate
base station
terminal device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2023/043781
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English (en)
French (fr)
Japanese (ja)
Inventor
敬平 白澤
拓哉 保▲高▼
信樹 平松
孝文 上濱
博道 吉川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyocera Corp
Original Assignee
Kyocera Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kyocera Corp filed Critical Kyocera Corp
Priority to JP2024567387A priority Critical patent/JPWO2024142824A1/ja
Publication of WO2024142824A1 publication Critical patent/WO2024142824A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/02—Refracting or diffracting devices, e.g. lens, prism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/02—Refracting or diffracting devices, e.g. lens, prism
    • H01Q15/10—Refracting or diffracting devices, e.g. lens, prism comprising three-dimensional [3D] array of impedance discontinuities, e.g. holes in conductive surfaces or conductive discs forming artificial dielectric
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/02—Refracting or diffracting devices, e.g. lens, prism
    • H01Q15/12—Refracting or diffracting devices, e.g. lens, prism functioning also as polarisation filter
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/14—Reflecting surfaces; Equivalent structures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/145—Passive relay systems

Definitions

  • This disclosure relates to a method for installing a radio wave control panel and a communication system.
  • the disclosed method for installing a radio wave control plate is a method for installing a radio wave control plate that is set between a base station and a terminal device, and the radio wave control plate, which has a phase gradient in a first direction, is installed at a position away from the base station in a second direction perpendicular to the first direction.
  • the communication system disclosed herein includes a base station that transmits radio waves, a radio wave control plate that has a phase gradient in a first direction and is installed at a position away from the base station in a second direction perpendicular to the first direction, and that receives and refracts the radio waves transmitted by the base station, and a terminal device that receives the radio waves refracted by the radio wave control plate.
  • FIG. 1 is a diagram illustrating an example of the configuration of a communication system according to the first embodiment.
  • FIG. 2 is a diagram showing an example of the configuration of the radio wave control plate according to the first embodiment.
  • FIG. 3 is a diagram for explaining a method of installing the radio wave control plate according to the first embodiment.
  • FIG. 4 is a diagram for explaining a method of installing the radio wave control plate according to the first embodiment.
  • FIG. 5 is a diagram for explaining a method of installing a radio wave control plate according to the second embodiment.
  • FIG. 6 is a diagram for explaining a method of installing a radio wave control plate according to the second embodiment.
  • FIG. 7 is a diagram for explaining the refraction direction of radio waves in the radio wave control plate according to the third embodiment.
  • FIG. 1 is a diagram illustrating an example of the configuration of a communication system according to the first embodiment.
  • FIG. 2 is a diagram showing an example of the configuration of the radio wave control plate according to the first embodiment.
  • FIG. 3 is
  • FIG. 8 is a diagram for explaining the power of a refracted wave according to a comparative example of the third embodiment.
  • FIG. 9 is a diagram for explaining the power of a refracted wave according to the third embodiment.
  • FIG. 10 is a diagram for explaining a method of installing a radio wave control plate according to the fourth embodiment.
  • FIG. 11 is a diagram for explaining a method of installing a radio wave control plate according to the fourth embodiment.
  • FIG. 12 is a diagram for explaining the reception power of a terminal device according to the fourth embodiment.
  • FIG. 13 is a diagram illustrating an example of the configuration of a communication system according to the fifth embodiment.
  • an XYZ Cartesian coordinate system is set, and the positional relationship of each part is explained with reference to this XYZ Cartesian coordinate system.
  • the direction parallel to the X-axis in a horizontal plane is the X-axis direction
  • the direction parallel to the Y-axis in the horizontal plane perpendicular to the X-axis is the Y-axis direction
  • the direction parallel to the Z-axis perpendicular to the horizontal plane is the Z-axis direction.
  • the X-axis and Y-axis directions are parallel to the ground
  • the Z-axis direction is the height direction from the ground.
  • the plane including the X-axis and Y-axis is appropriately referred to as the XY plane
  • the plane including the X-axis and Z-axis is appropriately referred to as the XZ plane
  • the plane including the Y-axis and Z-axis is appropriately referred to as the YZ plane.
  • the XY plane is parallel to the horizontal plane.
  • the XY plane, the XZ plane, and the YZ plane are perpendicular to each other.
  • Fig. 1 is a diagram showing an example of the configuration of the communication system according to the first embodiment.
  • the base station 10 is a wireless communication device configured to perform wireless communication with the terminal device 14.
  • the base station 10 is configured to perform wireless communication with the terminal device 14, for example, by transmitting and receiving millimeter waves.
  • the base station 10 is configured to perform wireless communication with the terminal device 14 via the radio wave control board 12.
  • the radio wave control plate 12 includes, for example, a substrate 121, a unit structure 122, a unit structure 123, and a unit structure 124.
  • a substrate 121 for example, a substrate 121, a unit structure 122, a unit structure 123, and a unit structure 124.
  • the substrate 121 may be, for example, a dielectric substrate formed of a dielectric material.
  • the substrate 121 may be, for example, rectangular in shape, but is not limited to this.
  • the substrate 121 may be, for example, circular or polygonal except rectangular.
  • the unit structures 122, 123, and 124 may be formed on the substrate 121.
  • the unit structures 122, 123, and 124 may be arranged two-dimensionally on the substrate 121.
  • the unit structures 122, 123, and 124 may each have a different size.
  • the unit structures 122, 123, and 124 change the phase of the radio waves incident on the radio wave control plate 12.
  • the unit structures 122, 123, and 124 may each have a different frequency band of the radio waves they change and the amount of phase change.
  • FIG. 2 shows an example of the structure of the substrate 121.
  • unit structures 122, 123, and 124 are arranged in order along the X-axis direction.
  • the radio wave control plate 12 is configured to have a phase gradient along the X-axis direction, but generally the phase gradient also has a component in the Y-axis direction.
  • the direction of the phase gradient of the radio wave control plate 12 is parallel to the ground, but the present disclosure is not limited to this.
  • the direction of the phase gradient of the radio wave control plate 12 may or may not be parallel to the ground.
  • the direction in which the phase gradient is provided may be referred to as the first direction.
  • the direction in the horizontal plane perpendicular to the first direction may be referred to as the second direction.
  • the direction perpendicular to the first and second directions may be referred to as the third direction.
  • the X-axis direction corresponds to the first direction
  • the Y-axis direction corresponds to the second direction
  • the Z-axis direction corresponds to the third direction, but the present disclosure is not limited to this.
  • the half-value angle of the radio wave W1 transmitted by the base station 10 is ⁇
  • the refraction angle of the radio wave W1 of the radio wave control plate 12 is ⁇ .
  • the position coordinates of the base station 10 are (0, 0, 0
  • the position coordinates of the position where the radio wave control plate 12 is installed are (0, Yp, 0)
  • the position coordinates of the terminal device 14 are (Xu, Yu, Zu).
  • the position coordinates of the base station 10 are the origin.
  • range R1 is the range in which effective power of refracted wave W2 emitted by radio wave control board 12 can be obtained.
  • radio wave control board 12 is installed between base station 10 and terminal device 14 so that terminal device 14 can obtain effective power.
  • the distance 41 in the X direction from the radio wave control board 12 to the terminal device 14 is Lcos ⁇ .
  • the distance 42 in the Z direction from the radio wave control board 12 to the terminal device 14 is Lsin ⁇ .
  • the terminal device 14 is installed so that the position coordinate Xu in the X-axis direction and the position coordinate Zu in the Z-axis direction of the terminal device 14 satisfy the relationships in the following formulas (2) and (3), respectively.
  • the terminal device 14 can obtain effective power more appropriately.
  • the area in which the terminal device 14 can obtain effective power is expanded by configuring the radio wave control plate 12 to be capable of refracting both horizontally polarized and vertically polarized waves.
  • the terminal device 14 can obtain effective power no matter how the radio wave control plate 12 is tilted, improving the degree of freedom in installing the radio wave control plate 12.
  • the second Fresnel zone 72 and the fourth Fresnel zone 74 are even-order Fresnel zones.
  • Fig. 10 shows a circular radio wave control plate 12A with a diameter of L1.
  • Fig. 11 shows a square radio wave control plate 12B with a side length of L2.
  • At least the length L2 of the radio wave control plate 12B is greater than the radius of the first Fresnel zone 71. It is more preferable that the length L2 of the radio wave control plate 12B is formed in a range of twice the radius of the first Fresnel zone 71 ⁇ 25%. In the fourth embodiment, by setting the length L2 of the radio wave control plate 12B to twice the radius of the first Fresnel zone 71 ⁇ 25% it is possible to deliver sufficient power to the terminal device 14.
  • the radio wave control plate in a polygonal shape like radio wave control plate 12B, it is possible to stabilize the received power that terminal device 14 can obtain. As a result, in the fourth embodiment, terminal device 14 can more appropriately receive radio waves transmitted by base station 10.
  • the radio wave control panel 12-4 refracts the radio wave W1 transmitted by the base station 10 and emits a refracted wave W2-4.
  • the radio wave control panel 12-4 can emit the refracted wave W2-4 toward the terminal device 14 present in the area 60-4 by changing the phase gradient direction angle with respect to the ground.
  • radio wave control plates 12-1 to 12-4 are each configured to emit radio waves to a different area.
  • radio waves can be delivered to a wider area.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)
PCT/JP2023/043781 2022-12-27 2023-12-07 電波制御板の設置方法および通信システム Ceased WO2024142824A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2024567387A JPWO2024142824A1 (https=) 2022-12-27 2023-12-07

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2022210712 2022-12-27
JP2022-210712 2022-12-27
JP2023109586 2023-07-03
JP2023-109586 2023-07-03

Publications (1)

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WO2024142824A1 true WO2024142824A1 (ja) 2024-07-04

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Country Link
JP (1) JPWO2024142824A1 (https=)
WO (1) WO2024142824A1 (https=)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017017643A (ja) * 2015-07-06 2017-01-19 ソフトバンク株式会社 無線通信システム、無線通信制御装置及びプログラム
WO2022091986A1 (ja) * 2020-10-30 2022-05-05 京セラ株式会社 通信システム、通信方法、および電波屈折板の設置方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017017643A (ja) * 2015-07-06 2017-01-19 ソフトバンク株式会社 無線通信システム、無線通信制御装置及びプログラム
WO2022091986A1 (ja) * 2020-10-30 2022-05-05 京セラ株式会社 通信システム、通信方法、および電波屈折板の設置方法

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