Setting method for radio wave control plate, base station, and control device

Abstract

This setting method for a radio wave control plate includes: a step in which, for a radio wave control plate that controls radio waves on the basis of a set entry angle and a set exit angle, values that are made to change from initial values to final values are temporarily set in sequence as the entry angle and the exit angle; a step in which, every time the entry angle and the exit angle are temporarily set, radio waves are caused to be incident on the radio wave control plate and the intensity of radio waves exiting from the radio wave control plate is assessed; and a step in which, after the entry angle and the exit angle have been made to change to the final values, the entry angle to set for the radio wave control plate is determined on the basis of results of the assessment step.

Description

Method for setting up radio wave control boards, base stations, and control devices.

[0001] This disclosure relates to a method for setting up a radio wave control board, a base station, and a control device.

[0002] A technique for controlling the reflection direction of radio waves using a radio wave control plate containing a metasurface element is known. For example, Patent Document 1 discloses a technique for dynamically controlling the reflection direction of radio waves using a reflector containing a metasurface element.

[0003] International Publication No. 2022 / 018815

[0004] The method for setting a radio wave control board according to this disclosure includes the steps of: sequentially setting values ​​that have been changed from an initial value to a final value as the incident angle and the exit angle for a radio wave control board that controls radio waves based on a set incident angle and exit angle; each time the incident angle and the exit angle are set provisionally, radio waves are incident on the radio wave control board and the intensity of the radio waves emitted from the radio wave control board is determined; and after the incident angle and the exit angle have been changed to the final value, the method for setting the incident angle to be set on the radio wave control board is determined based on the result of the determination step.

[0005] The base station of the present disclosure includes a determination unit that determines the intensity of radio waves emitted from a radio wave control board each time the incident angle and emission angle of the radio waves are provisionally set from an initial value to a final value, and a determination unit that, after the incident angle and emission angle have been changed to the final value, determines the incident angle to be set on the radio wave control board based on the determination result by the determination unit.

[0006] The control device of this disclosure includes an acquisition unit that acquires notification signals for provisionally setting the incident angle and exit angle of radio waves from an initial value to a final value to a radio wave control board that controls radio waves based on a set incident angle and exit angle, and a setting unit that provisionally sets the incident angle and exit angle to the radio wave control board from the initial value to the final value.

[0007] Figure 1 is a diagram illustrating the overview of a radio wave control board. Figure 2 is a diagram illustrating the incident angle of incoming radio waves and the emission angle of radio waves emitted from the radio wave control board. Figure 3 is a diagram illustrating a control method for the radio wave control board. Figure 4 is a diagram showing a communication system according to a comparative example. Figure 5 is a sequence diagram showing the flow of processing for controlling the incident angle of radio waves incident on the radio wave control board and the emission angle of radio waves emitted from the radio wave control board according to a comparative example. Figure 6 is a diagram illustrating an example of a problem according to each embodiment. Figure 7 is a diagram illustrating the change in received power when the position of the radio wave control board is shifted. Figure 8 is a diagram illustrating a control method for the radio wave control board according to the first embodiment. Figure 9 is a block diagram illustrating an example of the configuration of a base station according to each embodiment. Figure 10 is a block diagram illustrating an example of the configuration of a terminal according to each embodiment. Figure 11 is a block diagram illustrating an example of the configuration of a control device according to each embodiment. Figure 12 is a sequence diagram showing the flow of control processing for the radio wave control board according to the first embodiment. Figure 13 is a diagram illustrating a control method for the radio wave control board according to the second embodiment. Figure 14 is a sequence diagram showing the flow of control processing for the radio wave control board according to the second embodiment. Figure 15 is a diagram illustrating the control method of the radio wave control board according to the third embodiment. Figure 16 is a sequence diagram showing the flow of the control process of the radio wave control board according to the third embodiment. Figure 17 is a diagram illustrating the reciprocity of propagation paths. Figure 18 is a diagram showing an example configuration of a communication system according to the fourth embodiment. Figure 19 is a diagram illustrating an example of spatial correlation according to the fourth embodiment.

[0008] Embodiments of the present invention will be described in detail below with reference to the attached drawings. However, the present invention is not limited by these embodiments, and in the following embodiments, the same parts are denoted by the same reference numerals to omit redundant explanations.

[0009] [Overview] (Radio Control Panel) The overview of the radio control panel will be explained using Figure 1. Figure 1 is a diagram illustrating the overview of the radio control panel.

[0010] The radio wave control plate 1 is configured to control the direction of propagation of incident radio waves. For example, when the radio wave control plate 1 receives radio waves transmitted by a base station, it is configured to reflect or refract those radio waves at a predetermined angle. The radio wave control plate 1 may be composed of, for example, a metamaterial that changes the phase of the incident wave. The radio wave control plate 1 may be capable of controlling not only one of the directions of reflection and / or transmission (refractory) of radio waves, but both. In this disclosure, reflection and refraction together are referred to as emission.

[0011] As shown in Figure 1, the radio wave control board 1 may include, for example, a substrate 2, and unit structures 10a, 10b, 10c, and 10d. When it is not necessary to distinguish between unit structures 10a and 10d, they are collectively referred to as unit structure 10. Unit structure 10 is also called a metasurface element.

[0012] The unit structures 10a, 10b, 10c, and 10d can be formed on a substrate 2. The substrate 2 may be, for example, a dielectric substrate made of a dielectric material. The substrate 2 may, for example, have a rectangular shape, but is not limited thereto. The unit structures 10a, 10b, 10c, and 10d can be arranged in two dimensions.

[0013] In the radio wave control panel 1, multiple unit structures 10a are arranged along the X-axis on each tier. On the tier above where unit structures 10a are located, multiple unit structures 10b are arranged along the X-axis. On the tier above where unit structures 10b are located, multiple unit structures 10c are arranged along the X-axis. On the tier above where unit structures 10c are located, multiple unit structures 10d are arranged along the X-axis. In the example shown in Figure 1, unit structures 10a, 10b, 10c, and 10d are arranged periodically along the Y-axis. Note that each unit structure does not necessarily have to be arranged parallel to the X-axis and Y-axis directions. For example, the direction in which the multiple unit structures 10a are arranged does not have to intersect perpendicularly with the direction in which unit structures 10a, 10b, 10c, and 10d are arranged.

[0014] By making the properties of each unit structure 10a to 10d different, the amount of phase change (the difference between the phase of the incident radio wave and the phase of the emitted radio wave) can be made different for each unit structure 10a to 10d. By making the properties of each unit structure 10a to 10d different so that the amount of phase change increases (or decreases) sequentially, the radio wave control plate 1 has a gradient of phase change. The radio wave control plate 1 can reflect and / or refract the incident radio wave in a predetermined direction due to the gradient of phase change. In Figure 1, the shapes of the unit structures 10a to 10d are rectangular, but the shape of the unit structures is not limited to rectangles.

[0015] Figures 2 and 3 will be used to explain the incident angle of radio waves entering the radio wave control plate and the exit angle of radio waves emitting from the radio wave control plate. Figure 2 is a diagram illustrating the incident angle of incoming radio waves and the exit angle of radio waves emitting from the radio wave control plate. Figure 3 is a diagram illustrating the control method of the radio wave control plate.

[0016] As shown in Figure 2, the base station 20 transmits radio waves 101 to the radio wave control board 1. The radio wave control board 1 transmits radio waves 102 to the terminal 22, which are radio waves 102 that have been refracted at a predetermined angle from the radio wave 102 received from the base station 20. This establishes communication between the base station 20 and the terminal 22. Here, the angle between the radio waves 101 transmitted by the base station 20 and the radio wave control board 1 is called the incident angle θ. ｉ Furthermore, the angle between the radio waves 102 emitted by the radio wave control board 1 and the radio wave control board 1 is defined as the emission angle θ. ｒ Let's assume that.

[0017] The radio wave control board 1 shown in Figure 3 has a structure in which 25 × 25 unit structures 10 are arranged in two dimensions. In order to establish communication between the base station 20 and the terminal 22, the incident angle θ ｉ And the exit angle θ ｒ Based on this, by controlling the voltage applied to each of the 25 x 25 unit structures 10 contained in the radio wave control board 1, radio waves 101 can be transmitted or reflected in any direction to emit radio waves 102.

[0018] For example, let's represent the emission angle direction of the radio waves emitted by the radio wave control plate 1 as (θ, Φ). Here, θ is the elevation angle and Φ is the azimuth angle. Figure 3(a) shows the phase gradient of each unit structure 10 when the incident angle direction of the radio waves emitted by the radio wave control plate 1 is (90°, 90°) and the emission angle direction is (130°, 45°). Figure 3(b) shows the phase gradient of each unit structure 10 when the incident angle direction is (90°, 90°) and the emission angle direction is (135°, 135°). Comparing Figure 3(a) and Figure 3(b), the state of each unit structure 10 is different. In this way, by controlling the state of each unit structure 10, the radio waves 101 can be transmitted or reflected in any direction. As shown in Figure 3, in order to control the incident angle direction and the emission angle direction, it is necessary to control the elevation angle and the azimuth angle, but for convenience, only the control of the elevation angle will be explained below. The azimuth angle can be controlled in the same way as the elevation angle. Regarding the timing of the control, for example, it is possible to control the elevation angle and the azimuth angle simultaneously, but they can also be controlled at different times.

[0019] [Comparative Example] (Method for controlling the incident angle and the exit angle) Using Figures 4 and 5, a method for controlling the incident angle of radio waves incident on a radio wave control board and the exit angle of radio waves emitted from the radio wave control board according to the comparative example will be described. Figure 4 is a diagram of the communication system according to the comparative example.

[0020] As shown in Figure 4, the communication system 100a includes a radio wave control board 1, a base station 20, a terminal 22, and a control device 24.

[0021] The control device 24 is installed on the radio wave control board 1. The control device 24 is a device that controls the state of each unit structure 10 included in the radio wave control board 1.

[0022] Figure 5 is a sequence diagram showing the process flow for controlling the incident angle of radio waves incident on the radio wave control plate and the exit angle of radio waves emitted from the radio wave control plate in the comparative example.

[0023] The base station 20 transmits radio waves 101 toward the radio wave control board 1 at an incidence angle θ of the radio wave 101 toward the radio wave control board 1. ｉ Register (Step S1). Incident angle θ ｉFor example, when the communication system 100a is established, it should be registered with the base station 20.

[0024] Terminal 22 transmits a request signal to base station 20 for data communication (step S2).

[0025] The base station 20 generates a control signal to control the radio wave control board 1 (step S3). The control signal is generated at the incident angle θ of the radio wave 101. ｉ , the emission angle θ of the radio wave 102 ｒ This includes information such as the radio wave width. The base station 20 transmits the generated control signal to the control device 24 (step S4).

[0026] The control device 24 controls the state of each unit structure 10 included in the radio wave control board 1 based on the control signal received from the base station 20 (step S5). This enables data communication between the base station 20 and the terminal 22 via the radio wave control board 1.

[0027] The base station 20 transmits a data signal to the radio control board 1 (step S6). As a result, the data signal transmitted by the base station 20 reaches the terminal 22 via the radio control board 1.

[0028] Figure 6 is a diagram illustrating an example of a problem according to each embodiment. The radio wave control panel 1 is installed, for example, in building B. After being installed in building B, the radio wave control panel 1 may shift in the direction of the arrow.

[0029] Figure 7 is a diagram illustrating the change in received power when the position of the radio wave control plate is shifted. In Figure 7, the horizontal axis represents the emission angle, and the vertical axis represents the intensity of the received power. For example, in Figure 6, the incidence angle of the radio wave 101 to the radio wave control plate 1 is 85°, and the desired emission angle of the radio wave 102 is 45°.

[0030] The left diagram in Figure 7 shows the received power when the incident angle set on the radio wave control board 1 is 85°. When the set incident angle matches the actual incident angle of the radio wave 101, the received power intensity is highest in the 45° direction.

[0031] The right-hand figure in Figure 7 shows the received power when the incident angle set on the radio wave control board 1 is 90°. If the installation position of the radio wave control board 1 shifts, and a discrepancy occurs between the set incident angle and the actual incident angle of the radio wave 101, the strength of the received power in the 45° direction will decrease.

[0032] Therefore, this disclosure provides an appropriate setting of the incident angle to the radio wave control plate 1 in cases where the position of the radio wave control plate 1 shifts after it has been installed.

[0033] [First Embodiment] The control method of the radio wave control board according to the first embodiment will be explained using Figure 8. Figure 8 is a diagram for explaining the control method of the radio wave control board according to the first embodiment.

[0034] As shown in Figure 8, the communication system 100 includes a radio wave control board 1, a base station 20, a terminal 22, and a control device 24. The communication system 100 is a communication system that supports millimeter-wave communication capable of high-speed execution of large-capacity data communication, such as a fifth-generation mobile communication system (hereinafter also referred to as "5G") or a sixth-generation mobile communication system (hereinafter also referred to as "6G").

[0035] In the first embodiment, when calibrating the position of the radio wave control board 1, the base station 20 transmits a notification signal 111 to the control device 24. The base station 20 transmits radio waves 103 to the radio wave control board 1. The radio wave control board 1 reflects the radio waves 103 and emits radio waves 104. Based on the received power of the radio waves 104 received from the radio wave control board 1, the base station 20 determines the incident angle of the radio waves to the radio wave control board 1. The base station 20 determines the incident angle of the radio waves to the radio wave control board 1 and ends the position calibration mode (position calibration is completed; determining the incident angle of the radio waves to the radio wave control board 1 is referred to as "position calibration"). The base station 20 then performs normal operation.

[0036] (Base Station) Using Figure 9, we will explain the configuration examples of base stations according to each embodiment. Figure 9 is a block diagram showing the configuration examples of base stations according to each embodiment.

[0037] As shown in Figure 9, the base station 20 comprises a communication unit 30, a storage unit 32, and a control unit 34.

[0038] The communication unit 30 is a wireless communication interface that performs data communication with external devices. The communication unit 30 is configured to perform data communication with, for example, a terminal 22. The communication unit 30 supports millimeter-wave communication such as 5G or 6G.

[0039] The storage unit 32 is a memory that stores various types of information. The storage unit 32 is configured to store information such as the calculation contents and programs of the control unit 34. The storage unit 32 may include any non-transient storage medium such as a semiconductor storage medium and a magnetic storage medium. The storage unit 32 may include multiple types of storage mediums. The storage unit 32 may include a combination of a portable storage medium such as a memory card, optical disc, or magneto-optical disc and a storage medium reader. The storage unit 32 may include, for example, RAM (Random Access Memory) and ROM (Read Only Memory).

[0040] The control unit 34 is configured to control the operation of each part of the base station 20. The control unit 34 is implemented, for example, by a CPU (Central Processing Unit) or MPU (Micro Processing Unit) executing a program stored in the memory unit 32 using RAM or the like as the working area. The control unit 34 may also be implemented by an integrated circuit such as an ASIC (Application Specific Integrated Circuit) or FPGA (Field Programmable Gate Array). The control unit 34 may also be implemented by a combination of hardware and software.

[0041] The control unit 34 comprises a communication control unit 40, a notification unit 42, a determination unit 44, and a decision unit 46.

[0042] The communication control unit 40 controls the communication unit 30 to perform data communication with the terminal 22. The communication control unit 40 transmits radio waves via the communication unit 30. The communication control unit 40 receives radio waves via the communication unit 30. The communication control unit 40 transmits a control signal to the control device 24 indicating the set value of the radio wave incidence angle.

[0043] The notification unit 42 transmits a notification signal to the radio wave control board 1 to change the incident angle of radio waves incident on the radio wave control board 1 and the emission angle of radio waves emitted from the radio wave control board from an initial value to a final value in predetermined step widths.

[0044] The determination unit 44 determines the radio wave intensity of the received radio waves. The determination unit 44 determines the radio wave intensity of the radio waves reflected or refracted from the radio wave control plate from the initial value to the final value, where the incident angle and exit angle are provisionally set.

[0045] The determination unit 46 determines the set value of the incident angle to the radio wave control plate 1 based on the radio wave intensity determination result of the judgment unit 44. The determination unit 46 generates a control signal indicating the set value of the incident angle to the radio wave control plate 1.

[0046] (Terminal) Using Figure 10, we will explain the configuration examples of terminals according to each embodiment. Figure 10 is a block diagram showing the configuration examples of terminals according to each embodiment.

[0047] As shown in Figure 10, the terminal 22 includes an input unit 50, an output unit 52, a communication unit 54, a storage unit 56, and a control unit 58.

[0048] The input unit 50 accepts various input operations for the terminal 22. The input unit 50 includes, for example, a touch panel, buttons, switches, etc. The input unit 50 also includes, for example, a microphone that takes the voice of the terminal 22 as input sound.

[0049] The output unit 52 outputs various types of information. The output unit 52 includes, for example, a speaker that outputs audio contained in audio data received from another terminal 22. The output unit 52 also includes, for example, a display unit configured as a liquid crystal display or the like.

[0050] The communication unit 54 is a wireless communication interface that performs data communication with external devices. The communication unit 54 is configured to perform data communication with, for example, a base station 20. The communication unit 54 supports millimeter-wave communication such as 5G or 6G.

[0051] The storage unit 56 is a memory that stores various types of information. The storage unit 56 is configured to store information such as the calculation contents and programs of the control unit 58. The storage unit 56 may include any non-transient storage medium such as a semiconductor storage medium and a magnetic storage medium. The storage unit 56 may include multiple types of storage media. The storage unit 56 may include, for example, RAM and ROM.

[0052] The control unit 58 is configured to control the operation of each part of the terminal 22. The control unit 58 is implemented, for example, by a CPU or MPU executing a program stored in the memory unit 56 using RAM or the like as the working area. The control unit 58 may also be implemented by an integrated circuit such as an ASIC or FPGA. The control unit 58 may also be implemented by a combination of hardware and software.

[0053] The control unit 58 comprises a communication control unit 60, a determination unit 62, and a decision unit 64.

[0054] The communication control unit 60 controls the communication unit 54 to perform data communication with the base station 20. The communication control unit 60 transmits radio waves via the communication unit 54. The communication control unit 60 receives radio waves via the communication unit 54. The communication control unit 60 transmits a notification signal to the base station 20 indicating the set value of the radio wave incidence angle to be set.

[0055] The determination unit 62 determines the radio wave intensity of the received radio waves. The determination unit 62 determines the radio wave intensity of the radio waves reflected or refracted from the radio wave control plate 1 as the incident angle and exit angle with respect to the radio wave control plate 1 range from the initial value to the final value.

[0056] The determination unit 64 determines the set value of the incident angle to the radio wave control plate 1 based on the radio wave intensity determination result of the judgment unit 62.

[0057] (Control device) Using Figure 11, we will describe the configuration examples of the control devices according to each embodiment. Figure 11 is a block diagram showing the configuration examples of the control devices according to each embodiment.

[0058] As shown in Figure 11, the control device 24 comprises a communication unit 70, a storage unit 72, and a control unit 74.

[0059] The communication unit 70 is a wireless communication interface that performs data communication with external devices. The communication unit 70 is configured to perform data communication with, for example, a base station 20 and a terminal 22.

[0060] The storage unit 72 is a memory that stores various types of information. The storage unit 72 is configured to store information such as the calculation contents and programs of the control unit 74. The storage unit 72 may include any non-transient storage medium such as a semiconductor storage medium and a magnetic storage medium. The storage unit 72 may include, for example, RAM and ROM.

[0061] The control unit 74 is configured to control the operation of each part of the control device 24. The control unit 74 is implemented, for example, by a CPU or MPU executing a program stored in the memory unit 72 using RAM or the like as the working area. The control unit 74 may also be implemented by an integrated circuit such as an ASIC or FPGA. The control unit 74 may also be implemented by a combination of hardware and software.

[0062] The control unit 74 includes an acquisition unit 80 and a setting unit 82.

[0063] The acquisition unit 80 acquires a notification signal via the communication unit 70. The acquisition unit 80 also acquires a control signal via the communication unit 70 that indicates the set value of the incident angle to be set on the radio wave control board 1.

[0064] Based on the notification signal acquired by the acquisition unit 80, the setting unit 82 provisionally sets the incident angle and the emission angle of the radio waves sequentially, changing the values ​​from the initial value to the final value in predetermined step widths (for example, widths obtained by dividing the range from the initial value to the final value into equal intervals of predetermined integers). The setting unit 82 also sets the incident angle of the radio waves to the set value for each unit structure 10 of the radio wave control board 1 based on the control signal acquired by the acquisition unit 80.

[0065] (Control Processing of the Radio Wave Control Board) The control processing of the radio wave control board according to the first embodiment will be explained using Figure 12. Figure 12 is a sequence diagram showing the flow of the control processing of the radio wave control board according to the first embodiment.

[0066] The control unit 34 starts position calibration processing for the radio wave control plate 1 (step S10). For example, the control unit 34 performs the position calibration when the radio wave control plate 1 is installed, or when positional displacement occurs after installation of the radio wave control plate 1 and the received power of radio waves received from the radio wave control plate 1 becomes equal to or less than a predetermined value. The position calibration processing may be arbitrarily started by an operator who installs the radio wave control plate 1. Furthermore, when the position calibration processing is performed after positional displacement occurs after installation of the radio wave control plate 1, adjustment in an angular direction (azimuth direction or elevation direction) where positional displacement is likely to occur may be preferentially performed. For example, when the radio wave control plate 1 is installed on the roof of a building, the radio wave control plate 1 is often installed obliquely with respect to the vertical direction, and in such an installation method, positional displacement in the elevation direction is likely to occur due to the influence of gravity, so it is conceivable to preferentially perform adjustment in the elevation direction.

[0067] The notification unit 42 transmits a notification signal 111 to the control device 24 to change the incident angle of the radio wave 103 incident on the radio wave control plate 1 and the emission angle of the radio wave 104 emitted from the radio wave control plate 1 from an initial value to a final value at a predetermined step width (step S11).

[0068] The setting unit 82 sets the incident angle to an initial value θ for each unit structure 10 of the radio wave control plate 1 ｉ１ , and sets the emission angle to an initial value θ ｉ１ on a temporary basis (step S12). In the first embodiment, the incident angle and the emission angle set by the setting unit 82 for each unit structure 10 of the radio wave control plate 1 are the same angle.

[0069] The communication control unit 40 transmits the radio wave 103 to the radio wave control plate 1 via the communication unit 30 (step S13). The communication control unit 40 receives the radio wave 104 reflected by the radio wave control plate 1 via the communication unit 30 (step S14).

[0070] The determination unit 44 receives, from the communication control unit 40, the incident angle θ ｉ１ and the emission angle θ ｉ１ and determines (measures) the intensity of the received power of the radio wave 104 emitted by the radio wave control plate 1 set to the above values (step S15).

[0071] From this point forward, the incident angle and exit angle of the radio wave control plate 1 are set to θ ｉ２、 θ ｉ３ ..., θ ｉＮ And the final value θ ｉＮ The same control as in steps S12 to S15 is performed while sequentially changing (N is an integer of 2 or more). That is, the values ​​of the incident angle and the exit angle are gradually changed from the initial value to the final value and are sequentially set provisionally on the radio wave control board 1, and each time a provisional setting is made (initial value θ ｉ１ The strength of the received power of the radio wave 104 is determined (including the Nth time).

[0072] The determination unit 46 determines the incident angle to the radio wave control plate 1 based on the radio wave intensity determination result by the judgment unit 44 (step S20). Specifically, the determination unit 46 determines the incident angle θ ｉ１ and emission angle θ ｉ１ From the angle of incidence θ ｉＮ and emission angle θ ｉＮ Among these, the incidence angle with the strongest received power is determined as the set value, and the set value of the incidence angle is stored in the storage unit 32.

[0073] When step S20 is completed, the position calibration mode ends, and the base station 20 and radio wave control board 1 then operate normally. That is, when the base station 20 receives a request signal from a terminal for data communication, it transmits a control signal containing the incident angle information determined in step S20 to the control device 24 of the radio wave control board 1. The emission angle information included in the control signal is determined, for example, each time the base station 20 receives a request signal, based on the location information of the terminal that sent the request signal. The control device 24 of the radio wave control board 1, upon receiving the control signal, then controls the state of each unit structure 10 of the radio wave control board 1 based on the control signal.

[0074] As described above, in the first embodiment, the base station 20 transmits radio waves to the radio wave control board 1, and the radio wave control board 1 receives the reflected radio waves. Based on the strength of the received power, the incident angle of the radio waves to the radio wave control board 1 is determined. This allows the first embodiment to appropriately set the incident angle of the radio waves incident on the radio wave control board 1.

[0075] [Modification of the First Embodiment] In the first embodiment, the angle of incidence θ ｉ１ and emission angle θ ｉ１ From the angle of incidence θ ｉＮ and emission angle θ ｉＮ Although it has been explained that the set value of the incident angle is determined based on the received power intensity of N radio waves up to this point, this disclosure is not limited thereto. For example, when the radio wave control board 1 is installed, the process shown in Figure 12 is performed, and the set value of the incident angle for the radio wave control board 1 is the incident angle θ ｉｘ It is assumed that the following is set. Subsequently, when performing position calibration of the radio wave control board 1, if it is assumed that the position of the radio wave control board 1 has not shifted significantly, the incident angle and exit angle shall be θ ｉＮ Instead of sequentially setting N possible angles up to θ, ｉｘ The angle around (for example, θ) ｉｘ-2 From θ ｉｘ+2 The angle up to θ can be set provisionally in sequence, and the setting value for the incident angle can be determined. This is because, if the position of the radio wave control board 1 is not significantly shifted, the angle θ ｉｘ This is because the strength of the received radio wave power is expected to be greatest at angles around this point. As a result, the number of trials required to set the incident and outgoing angles to the radio wave control board 1 (the number of times the incident and outgoing angles to the radio wave control board 1 are tentatively set) can be reduced, thereby shortening the time required for positional calibration of the radio wave control board 1.

[0076] [Second Embodiment] The control method of the radio wave control board according to the second embodiment will be explained using Figure 13. Figure 13 is a diagram for explaining the control method of the radio wave control board according to the second embodiment.

[0077] In the second embodiment, when calibrating the position of the radio wave control board 1, the base station 20 transmits a notification signal 113 to the control device 24, and then the base station 20 transmits a notification signal 114 to the terminal 22. The base station 20 transmits radio waves 105 to the radio wave control board 1. The radio wave control board 1 emits radio waves 106, which are obtained by reflecting or refracting the radio waves 105 at a predetermined angle. The terminal 22 determines the set value of the incident angle to be set for each unit structure 10 included in the radio wave control board 1 based on the received power of the received radio waves 106. The terminal 22 transmits a notification signal 115 to the base station 20 indicating the set value of the incident angle. Based on the notification signal 115 received from the terminal 22, the base station 20 determines the incident angle of the radio waves to the radio wave control board 1 and terminates the position calibration mode. The base station 20 then performs normal operation.

[0078] (Control Processing of the Radio Wave Control Board) The control processing of the radio wave control board according to the second embodiment will be explained using Figure 14. Figure 14 is a sequence diagram showing the flow of the control processing of the radio wave control board according to the second embodiment.

[0079] The processes in steps S30 and S31 are the same as those in steps S10 and S11, respectively, so their explanation will be omitted.

[0080] The notification unit 42 transmits a notification signal 114 to the terminal 22 to provisionally set the incidence angle of the radio waves 105 that enter the radio wave control board 1 from the base station 20 and the emission angle of the radio waves 106 that exit the radio wave control board 1 to the terminal 22, changing their values ​​sequentially from an initial value to a final value in predetermined step widths (step S32).

[0081] The setting unit 82 sets the incident angle of the radio waves 105 to an initial value θ for each unit structure 10 of the radio wave control board 1. ｉ１ The emission angle of the radio wave 106 is set to the initial value θ. ｒ１ This is tentatively set (step S33). In the second embodiment, the setting unit 82 tentatively sets the incident angle and the emission angle to be set independently for each unit structure 10 of the radio wave control board 1.

[0082] The communication control unit 40 transmits radio waves 105 to the radio wave control board 1 via the communication unit 30 (step S34).

[0083] The communication control unit 60 receives the radio waves 106 emitted from the radio wave control board 1 via the communication unit 54 (step S35).

[0084] The determination unit 62 determines the incident angle θ received by the communication control unit 60. ｉ１ and emission angle θ ｒ１ The radio wave control board 1, which has been set to a certain value, determines the received power of the radio wave 106 emitted (step S36). Thereafter, the incident angle of the radio wave control board 1 is set to θ. ｉ２、 θ ｉ３ ..., θ ｉＮ And the final value θ ｉＮ (N is an integer greater than or equal to 2) The emission angle of the radio wave control board 1 is set to θ ｒ２、 θ ｒ３ ..., θ ｒＭ And the final value θ ｒＭ The same control as in steps S33 to S36 is performed while sequentially changing each value up to (where M is an integer of 2 or more). That is, the values ​​of the incident angle and the exit angle are gradually changed from the initial value to the final value and are sequentially set provisionally on the radio wave control board 1, and the strength of the received power of the radio wave 106 is determined each time a provisional setting is made.

[0085] In other words, the determination unit 62 determines the incident angle θ ｉ１ and emission angle θ ｒ１ From the angle of incidence θ ｉＮ and emission angle θ ｒＭ The strength of the received radio waves up to N x M is determined.

[0086] The determination unit 64 determines the set value of the incident angle based on the radio wave intensity determination result by the judgment unit 62 (step S41). Specifically, the determination unit 64 determines the incident angle θ ｉ１ and emission angle θ ｒ１ From the angle of incidence θ ｉＮ and emission angle θ ｒＭ The system determines the incident angle as a set value for the combination of incident and exit angles that yields the strongest received power, and generates a control signal indicating this set value.

[0087] The communication control unit 60 transmits a notification signal 115 indicating the set value of the incident angle to the base station 20 via the communication unit 54 (step S42).

[0088] The determination unit 46 determines the incident angle based on the notification signal 115 received from the terminal 22 (step S43). The determination unit 46 stores the determined incident angle as a set value.

[0089] Once step S43 is completed, the incidence angle of the radio waves on the radio wave control board 1 is determined, and the position calibration mode ends. From this point onward, normal operation begins.

[0090] As described above, in the second embodiment, the base station 20 transmits radio waves to the radio wave control board 1, and when the terminal 22 receives the radio waves emitted by the radio wave control board 1, the incident angle of the radio wave control board 1 is determined based on the strength of the received power. This allows the second embodiment to appropriately set the incident angle of the radio waves incident on the radio wave control board 1.

[0091] [Modification of the second embodiment] In the second embodiment, the incident angle θ ｉ１ and emission angle θ ｒ１ From the angle of incidence θ ｉＮ and emission angle θ ｒＮ Although it has been explained that the incident angle setting value is determined based on the received power intensity of N × M radio waves up to this point, this disclosure is not limited thereto. For example, when the radio wave control board 1 is installed, the process shown in Figure 14 is performed and the incident angle setting value is θ ｉｘ It is assumed that the following is set. Subsequently, when calibrating the position of the radio wave control board 1, if it is assumed that the position of the radio wave control board 1 has not shifted significantly, the incident angle is set to θ ｉｘ The angle of incidence may be determined by sequentially setting only the angles around the point. This reduces the number of attempts to set the angle of incidence to the radio wave control board 1 (the number of times the angle of incidence to the radio wave control board 1 is provisionally set), thereby shortening the time required for positional calibration of the radio wave control board 1.

[0092] [Third Embodiment] The control method of the radio wave control board according to the third embodiment will be explained using Figure 15. Figure 15 is a diagram for explaining the control method of the radio wave control board according to the third embodiment.

[0093] In the third embodiment, when calibrating the position of the radio wave control board 1, the terminal 22 transmits a notification signal 117 to the control device 24, and then the terminal 22 transmits a notification signal 118 to the base station 20. The terminal 22 transmits radio waves 107 to the radio wave control board 1. The radio wave control board 1 emits radio waves 108, which are the radio waves 107 that have been reflected. Based on the received power of the radio waves received from the radio wave control board 1, the terminal 22 determines the incident angle of the radio waves from the terminal 22 that transmitted the notification signal 117 to the radio wave control board 1. Next, in the third embodiment, the terminal 22 transmits radio waves 109 to the radio wave control board 1. The radio wave control board 1 emits radio waves 110, which are the radio waves 109 that have been reflected / refracted at a predetermined angle. Based on the received power of the radio waves 110 received from the radio wave control board 1, the base station 20 determines the emission angle of the radio waves from the radio wave control board 1 to the base station 20, and based on that, determines the incident angle of the radio waves from the base station 20 to the radio wave control board 1. Then, the base station 20 generates a control signal 120 to control the state of each unit structure 10 included in the radio wave control board 1, based on the determined incidence angle from the base station 20 to the radio wave control board 1, and outputs it to the control device 24. The control device 24 controls the state of each unit structure 10 according to the control signal 120 received from the base station 20. The incidence angle of the radio waves from the base station 20 to the radio wave control board 1 is determined, and the terminal and the base station exit the position calibration mode. The base station 20 then performs normal operation.

[0094] (Control Processing of the Radio Wave Control Board) The control processing of the radio wave control board according to the third embodiment will be explained using Figure 16. Figure 16 is a sequence diagram showing the flow of the control processing of the radio wave control board according to the third embodiment.

[0095] The control unit 58 starts the position calibration process for the radio wave control board 1 (step S50). For example, the control unit 58 starts the position calibration process when the radio wave control board 1 is installed or when the received power of the radio waves received from the radio wave control board 1 is below a predetermined level. The position calibration process may also be started at the discretion of the business operator installing the radio wave control board 1.

[0096] The notification unit 42 transmits a notification signal 117 to the control device 24 to change the incidence angle of the radio waves 107 that enter the radio wave control board 1 from the terminal 22 and the emission angle of the radio waves 108 that exit the radio wave control board 1 to the terminal 22 from an initial value to a final value in a predetermined step width (step S51).

[0097] The process in step S53 is basically the same as the process in step S12 shown in Figure 12. That is, the incident angle and the emission angle set for each unit structure 10 of the radio wave control board 1 are set to the same value.

[0098] The communication control unit 60 transmits radio waves 107 to the radio wave control board 1 via the communication unit 54 (step S54). The communication control unit 60 receives the radio waves 108 reflected by the radio wave control board 1 via the communication unit 54 (step S55).

[0099] The determination unit 62 determines the incident angle θ received by the communication control unit 60. ｉ１ and emission angle θ ｉ１ The radio wave control board 1, which is set to this configuration, determines the received power of the radio wave 108 that has been reflected (step S56).

[0100] The processes from step 57 to step S60 are basically the same as the processes from step S54 to step S56, respectively. That is, after step S56, the setting unit 82 sets the incident angle θ ｉ１ and emission angle θ ｉ１ The incident angle θ is set to a predetermined step width and then to the final value. ｉＮ and emission angle θ ｉＮ The change is made up to this point. Then, the communication control unit 60 and the determination unit 62 execute the processing from step S54 to step S56 for each unit structure 10 of the radio wave control board 1, with each incident angle and each emission angle set. That is, the determination unit 62 determines the incident angle θ ｉ１ and emission angle θ ｉ１ From the angle of incidence θ ｉＮ and emission angle θ ｉＮ Determine the received power of the N radio waves up to that point.

[0101] The determination unit 64 determines the incidence angle from the terminal 22 to the radio wave control board 1 based on the radio wave intensity determination result by the judgment unit 62 (step S61). Specifically, the determination unit 64 determines the incidence angle θ ｉ１ and emission angle θ ｉ１ From the angle of incidence θ ｉＮ and emission angle θ ｉＮ Of these, the one with the strongest received power is determined as the incidence angle from terminal 22 to radio wave control board 1. The determined incidence angle from terminal 22 to radio wave control board 1 is incidence angle θ. ｉ＿ｆｉｘ It is also called by this name.

[0102] The communication control unit 60 notifies the base station 20 of the start of the position calibration mode via the communication unit 54 between the terminal 22, the radio wave control board 1, and the base station 20 (step S62).

[0103] The setting unit 82 sets the emission angle of radio waves from the radio wave control board 1 to the base station 20 for each unit structure 10 of the radio wave control board 1, with an initial value θ. ｒ１ Set to (step S63).

[0104] The communication control unit 60 transmits radio waves 109 to the radio wave control board 1 via the communication unit 54 (step S64).

[0105] The communication control unit 40 receives the radio waves 110 emitted from the radio wave control board 1 via the communication unit 30 (step S65).

[0106] The determination unit 44 determines the incident angle θ received by the communication control unit 40. ｉ＿ｆｉｘ and emission angle θ ｒ１ The radio wave control board 1, which is set to this value, determines the received power of the radio waves it emits (step S66).

[0107] The setting unit 82 sets the final value θ of the emission angle from the radio wave control board 1 to the base station 20 for each unit structure 10 of the radio wave control board 1. ｒＭ Set M to an integer greater than or equal to 2 (step S67).

[0108] The processes in steps S68 and S69 are the same as those in steps S64 and S65, respectively, so their explanation will be omitted.

[0109] The processes from step 68 to step 70 are basically the same as the processes from step S64 to step S66, respectively. That is, after step S66, the setting unit 82 sets the incidence angle from terminal 22 to radio wave control board 1 to θ ｉ＿ｆｉｘ With the control panel fixed in place, the radio wave emission angle from the radio wave control panel 1 to the base station 20 is set to an initial value θ. ｒ１ From to the final value θ ｒＭ The changes are made sequentially up to this point. Then, the communication control unit 60 and the determination unit 44 execute the processing from step S64 to step S56 for each unit structure 10 of the radio wave control board 1 while each emission angle is set. That is, the determination unit 62 determines the incident angle θ ｉ＿ｆｉｘ and emission angle θ ｒ１ From the angle of incidence θ ｉ＿ｆｉｘ and emission angle θ ｒＭ Determine the received power of radio waves up to M street.

[0110] In other words, in the third embodiment, the received power of radio waves is determined for a total of N + M cases, where the incident angle is N and the exit angle is M.

[0111] The determination unit 46 determines the emission angle from the radio wave control board 1 to the base station 20 based on the radio wave intensity determination result by the judgment unit 44 (step S71). Specifically, the determination unit 46 determines the emission angle θ ｒ１ From the exit angle θ ｒＮ Of these, the one with the strongest received power is determined as the emission angle.

[0112] The determination unit 46 determines the incidence angle from the base station 20 to the radio wave control board 1 (i.e., the incidence angle to be ultimately set on the radio wave control board 1) based on the emission angle of radio waves from the radio wave control board 1 to the base station 20 determined by the determination unit 46 (step S72). In step S72, for example, the reciprocity of the radio wave propagation paths is utilized. The determination unit 46 stores the determined incidence angle as a set value.

[0113] Once step S72 is completed, the incidence angle of the radio waves from the base station 20 to the radio wave control board 1 is determined, and the position calibration mode ends. From this point onward, normal operation begins.

[0114] It should be noted that the incident angle of an incident wave from the base station 20 to the radio wave control panel 1 can be specified based on the reciprocity of radio wave propagation paths, as long as the emission angle from the radio wave control panel 1 to the base station 20 is specified. FIG. 17 is a diagram for explaining the reciprocity of propagation paths. Let θ be the angle formed between the radio wave 131 from the terminal 22 to the radio wave control panel 1 and the radio wave control panel 1 Ｂｉ , and let θ be the angle formed between the radio wave 132 from the radio wave control panel 1 to the base station 20 and the radio wave control panel 1 Ｂｒ . In this case, if there is no large difference between the channel center frequencies of the downlink and the uplink, due to the reciprocity of radio wave propagation paths, θ, which is the angle formed between the radio wave 133 from the base station 20 to the radio wave control panel 1 and the radio wave control panel 1 Ａｉ , is the same as θ Ｂｒ .

[0115] [Modification of Third Embodiment] In the third embodiment, the description has been given on the assumption that the incident angle setting value is determined based on the received power intensities of N+M types of radio waves from the incident angle θ ｉ１ and the emission angle θ ｒ１ to the incident angle θ ｉＮ and the emission angle θ ｒＭ , but the present disclosure is not limited thereto. For example, it is assumed that when the radio wave control panel 1 is installed, the process shown in FIG. 16 is performed, and θ ｉｘ is set as the incident angle setting value from the base station 20 to the radio wave control panel 1. Thereafter, when performing position calibration of the radio wave control panel 1, if it is assumed that the position of the radio wave control panel 1 is not greatly deviated, the setting value of the incident angle from the base station 20 to the radio wave control panel 1 may be determined based on the received power intensity of radio waves around θ ｉｘ .

[0116] [Fourth Embodiment] A communication system according to a fourth embodiment will be described with reference to FIG. 18. FIG. 18 is a diagram showing a configuration example of the communication system according to the fourth embodiment.

[0117] As shown in FIG. 18, the communication system 100A includes the radio wave control panel 1, a communication device 200, and a communication device 300.

[0118] Communication device 200 includes antenna 201 and antenna 202. Communication device 300 includes antenna 301 and antenna 302. Communication devices 200 and 300 are MIMO (Multi-Input Multi-Output) compatible communication devices. Although communication devices 200 and 300 are described as having two antennas, this disclosure is not limited thereto. Communication devices 200 and 300 may have three or more antennas.

[0119] The antenna 201 of the communication device 200 emits radio waves 141 to the radio wave control board 1. The radio wave control board 1 reflects / refracts the radio waves 141 and emits radio waves 142 to the communication device 300. The antenna 302 of the communication device 300 receives the radio waves 142.

[0120] The antenna 202 of the communication device 200 emits radio waves 143 to the communication device 300. The antenna 302 of the communication device 300 receives the radio waves 143.

[0121] In the example shown in Figure 18, it is preferable that the radio waves 142 and 143 are radio waves that can be independently received by antennas 302 and 301, respectively. In other words, it is preferable that the radio wave control board 1 emits radio waves 142 that have low spatial correlation with the radio waves 143 received by antenna 301.

[0122] Figure 19 is a diagram illustrating an example of spatial correlation according to the fourth embodiment. In the fourth embodiment, for example, a rank indicator can be used as an index representing spatial correlation.

[0123] In the examples shown in Figures 19(a) and 19(b), in both cases, the antenna 201 of the communication device 200 transmits radio wave 151 to the communication device 300, and the antenna 202 of the communication device 200 transmits radio wave 152 to the communication device 300. However, the spatial correlation of the radio waves differs between Figure 19(a) and Figure 19(b). In the case of radio waves 151 and 152 shown in Figure 19(a), the antenna 301 of the communication device 300 receives both radio wave 151 and radio wave 152. Similarly, the antennas 302 of the communication device 300 also receive both radio wave 151 and radio wave 152, respectively.

[0124] As described above, in the example illustrated in FIG. 19A, the antenna 301 and the antenna 302 of the communication device 300 cannot independently receive two signals, which are the radio wave 151 and the radio wave 152, respectively. In this case, the rank indicator is "1".

[0125] In the radio waves 151 and 152 illustrated in FIG. 19B, the example differs from FIG. 19A in that the antenna 301 of the communication device 300 can receive only the radio wave 151, and the antenna 302 of the communication device 300 can receive only the radio wave 152.

[0126] That is, in the example illustrated in FIG. 19B, the antenna 301 and the antenna 302 of the communication device 300 can independently receive two signals, which are the radio wave 151 and the radio wave 152, respectively. In this case, the rank indicator is "2".

[0127] Comparing FIG. 19A and FIG. 19B, the throughput of FIG. 19B is twice the throughput of FIG. 19A. As described above, throughput can be improved by using radio waves with low spatial correlation.

[0128] The present disclosure can also adopt the following configuration. (1) A step of sequentially provisionally setting values varied from an initial value to a final value as the incident angle and the outgoing angle for a radio wave control plate that controls radio waves based on the set incident angle and outgoing angle; a step of causing a radio wave to be incident on the radio wave control plate and determining the intensity of the radio wave emitted from the radio wave control plate each time the incident angle and the outgoing angle are provisionally set; and a step of, after varying the incident angle and the outgoing angle to the final values, determining an incident angle to be set for the radio wave control plate based on a result of the determining step. A setting method for a radio wave control plate, comprising: (2) In the setting step, the same initial value θ for the incident angle and the outgoing angle １ is set, and the initial value θ １ is provisionally set at a predetermined step width up to a final value θ Ｎ (where N is an integer of 2 or greater), and in the determining step, for the radio wave emitted from the radio wave control plate, the initial value θ １ to the final value θＮ The method for setting a radio wave control board as described in (1), wherein the setting step involves determining N different radio wave strengths up to a certain point, and in the setting step, the setting value of the incident angle is determined based on the determination results of the N different radio wave strengths. (3) In the setting step, the initial value of the incident angle is set to the initial value θ. ｉ１ , the initial value of the emission angle is the initial value θ ｒ１ Let's tentatively set it to the initial value θ. ｉ１ The final value θ is obtained in a predetermined step width. ｉＮ (N is an integer greater than or equal to 2) is tentatively set, and the initial value θ is set accordingly. ｒ１ The final value θ is obtained in a predetermined step width. ｒＭ (M is an integer of 2 or more) is set to a provisional value, and in the step of making the determination, the initial value θ is set for the radio waves emitted from the radio wave control board. ｉ１ From the aforementioned final value θ ｉＮ and the initial value θ ｒ１ From the aforementioned final value θ ｒＭ The method for setting a radio wave control board as described in (1), wherein the radio wave intensity for N × M cases is determined, and in the step of determining, the set value of the incident angle is determined based on the determination result of the N × M cases of radio wave intensity. (4) In the step of setting, the initial value of the incident angle is set to the initial value θ. ｉ１ Set to the initial value θ ｉ１ The final value θ is obtained in a predetermined step width. ｉＮ (N is an integer greater than or equal to 2) is set as a provisional value, and in the step of making the determination, the initial value θ is set for the radio waves emitted from the radio wave control board. ｉ１ From the aforementioned final value θ ｉＮ The N possible radio wave strengths are determined, and in the step of determining the N possible radio wave strengths, the set value θ of the incident angle is determined based on the determination result of the N possible radio wave strengths. ｉ＿ｆｉｘ Determine the above setting value θ ｉ＿ｆｉｘ After determining the initial value of the emission angle, the initial value of the emission angle is set to the initial value θ. ｒ１ The steps to set the initial value θ ｒ１ The final value θ is obtained in a predetermined step width. ｒＭ The steps include changing the value up to (where M is an integer greater than or equal to 2), transmitting radio waves toward the radio wave control board, and setting the initial value θ for the radio waves emitted from the radio wave control board. ｒ１From the aforementioned final value θ ｒＭ The steps include determining the radio wave intensity for M paths up to a certain point, and determining the emission angle setting value θ based on the determination result of the radio wave intensity for M paths. ｒ＿ｆｉｘ A method for setting a radio wave control board as described in (1), wherein the set value of the incident angle is determined based on the reciprocity of the radio wave propagation path. (5) A base station comprising: a determination unit that determines the intensity of radio waves emitted from a radio wave control board each time the incident angle and the emission angle of the radio waves are provisionally set from an initial value to a final value for a radio wave control board that controls radio waves based on a set incident angle and emission angle; and a determination unit that, after changing the incident angle and the emission angle to the final value, determines the incident angle to be set on the radio wave control board based on the determination result by the determination unit. (6) A control device comprising: an acquisition unit that acquires a notification signal for provisionally setting the incident angle and the emission angle of the radio waves from an initial value to a final value for a radio wave control board that controls radio waves based on a set incident angle and emission angle; and a setting unit that provisionally sets the incident angle and the emission angle on the radio wave control board from the initial value to the final value. (7) The control device according to (6), wherein the acquisition unit acquires a control signal indicating a set value of the incident angle to be set on the radio wave control board, and the setting unit sets the incident angle to the set value based on the control signal.

[0129] 1 Radio wave control board 2 Circuit board 10-unit structure 20 Base station 22 Terminal 24 Control device 30, 54, 70 Communication unit 32, 56, 72 Memory unit 34, 58, 74 Control unit 40, 60 Communication control unit 42 Notification unit 44, 62 Judgment unit 46, 64 Decision unit 50 Input unit 52 Output unit 80 Acquisition unit 82 Setting unit 100, 100a, 100A Communication system 200, 300 Communication device 201, 202, 301, 302 Antenna

Claims

1. A method for setting up a radio wave control board, comprising: the steps of: sequentially setting values ​​that change from an initial value to a final value as the incident angle and the exit angle for a radio wave control board that controls radio waves based on a set incident angle and exit angle; each time the incident angle and the exit angle are set, radio waves are incident on the radio wave control board and the intensity of the radio waves emitted from the radio wave control board is determined; and after the incident angle and the exit angle have been changed to the final value, the step of determining the incident angle to be set on the radio wave control board based on the result of the determination step.

2. In the setting step described above, the incident angle and the exit angle are set to the same initial value θ. １ Set the initial value θ １ The final value θ is obtained in a predetermined step width. Ｎ (N is an integer greater than or equal to 2) is set as a provisional value, and in the step of making the determination, the initial value θ is set for the radio waves emitted from the radio wave control board. １ From the aforementioned final value θ Ｎ A method for setting up a radio wave control board according to claim 1, comprising: determining N different radio wave strengths up to a certain point; and in the step of determining the N different radio wave strengths, determining the set value of the incident angle based on the determination results of the N different radio wave strengths.

3. In said setting step, an initial value of the incident angle is provisionally set to an initial value θ ｉ１ , an initial value of the emission angle is provisionally set to an initial value θ ｒ１ , said initial value θ ｉ１ is provisionally set with a predetermined step width up to a final value θ ｉＮ (where N is an integer of 2 or greater), and said initial value θ ｒ１ is provisionally set with a predetermined step width up to a final value θ ｒＭ (where M is an integer of 2 or greater); in said determining step, for radio waves emitted from the radio wave control plate, N×M types of radio wave intensities from said initial value θ ｉ１ to said final value θ ｉＮ and from said initial value θ ｒ１ to said final value θ ｒＭ are determined; and in said decision step, a set value of the incident angle is decided based on the N×M determination results of said radio wave intensities. The method for setting a radio wave control plate according to claim 1.

4. In the setting step described above, the initial value of the incident angle is set to the initial value θ. ｉ１ Set to the initial value θ ｉ１ The final value θ is obtained in a predetermined step width. ｉＮ (N is an integer greater than or equal to 2) is set as a provisional value, and in the step of making the determination, the initial value θ is set for the radio waves emitted from the radio wave control board. ｉ１ From the aforementioned final value θ ｉＮ The N possible radio wave strengths are determined, and in the step of determining the N possible radio wave strengths, the set value θ of the incident angle is determined based on the determination result of the N possible radio wave strengths. ｉ＿ｆｉｘ Determine the above setting value θ ｉ＿ｆｉｘ After determining the initial value of the emission angle, the initial value of the emission angle is set to the initial value θ. ｒ１ The steps to set the initial value θ ｒ１ The final value θ is obtained in a predetermined step width. ｒＭ The steps include changing the value up to (where M is an integer of 2 or more), transmitting radio waves toward the radio wave control board, and setting the initial value θ for the radio waves emitted from the radio wave control board. ｒ１ From the aforementioned final value θ ｒＭ The steps include determining the radio wave intensity for M paths up to a certain point, and determining the emission angle setting value θ based on the determination result of the radio wave intensity for M paths. ｒ＿ｆｉｘ A method for setting a radio wave control board according to claim 1, comprising determining the set value of the incident angle based on the reciprocity of the radio wave propagation path.

5. A base station comprising: a radio wave control board that controls radio waves based on set incidence and emission angles, the determination unit which determines the intensity of radio waves emitted from the radio wave control board each time the incidence and emission angles of the radio waves are provisionally set from an initial value to a final value; and a determination unit which, after the incidence and emission angles have been changed to the final value, determines the incidence angle to be set on the radio wave control board based on the determination result by the determination unit.

6. A control device comprising: an acquisition unit for acquiring notification signals to provisionally set the incident angle and exit angle of radio waves to a radio wave control board that controls radio waves based on set incident and exit angles, from an initial value to a final value; and a setting unit for provisionally setting the incident angle and exit angle to the radio wave control board from the initial value to the final value.

7. The control device according to claim 6, wherein the acquisition unit acquires a control signal indicating a set value for the incident angle to be set on the radio wave control board, and the setting unit sets the incident angle to the set value based on the control signal.

Images