Control apparatus, control method, and storage medium

Abstract

To provide a control device, a control method, and a program capable of suppressing an increase in power consumption while executing distortion compensation processing.SOLUTION: A control device controls a communication device that performs wireless communication with another communication device, and includes an acquisition unit that acquires a parameter based on a relative positional relationship between the other communication device and the communication device, and a control processing unit that controls whether or not to cause a distortion compensation processing execution unit to execute non-linear distortion compensation processing on the basis of the parameter based on the relative positional relationship between the other communication device and the communication device.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a control device, a control method, and a program. [Background technology]

[0002] A radio signal amplified using the nonlinear region of an amplifier contains nonlinear distortion. Nonlinear distortion compensation processing for compensating for this nonlinear distortion is sometimes performed in a digital processing unit of a radio communication device (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-71349 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, communications are sometimes conducted between NTN (Non-Terrestrial Network) communications equipment, such as satellites and HAPS (High Altitude Platform Stations), and terrestrial communications equipment. NTN communications equipment typically operates using electricity generated by solar power or other sources, and therefore has strict restrictions on power consumption. For this reason, there is a need to suppress increases in power consumption while performing distortion compensation processing in communications equipment.

[0005] An object of the present disclosure is to provide a control device, a control method, and a program that can suppress an increase in power consumption while performing distortion compensation processing. Note that this object is only one of multiple objects that multiple embodiments disclosed in this specification aim to achieve. Other objects or problems and novel features will become apparent from the description of this specification or the accompanying drawings. [Means for solving the problem]

[0006] The control device according to the present disclosure is a control device that controls a communication device that performs wireless communication with another communication device, and includes an acquisition unit that acquires parameters based on the relative positional relationship between the other communication device and the communication device, and a control processing unit that controls whether or not to cause a distortion compensation processing execution unit to execute nonlinear distortion compensation processing based on the parameters based on the relative positional relationship between the other communication device and the communication device.

[0007] The control method according to the present disclosure is a control method executed by a control device that controls a communication device that performs wireless communication with another communication device, and includes controlling whether or not to cause a distortion compensation processing execution unit to perform nonlinear distortion compensation processing based on a parameter based on a relative positional relationship between the other communication device and the communication device.

[0008] The program according to the present disclosure is a program that causes a control device that controls a communication device that performs wireless communication with another communication device to execute processing, and the processing includes controlling whether or not a distortion compensation processing execution unit executes nonlinear distortion compensation processing based on a parameter based on a relative positional relationship between the other communication device and the communication device. [Effects of the Invention]

[0009] The present disclosure makes it possible to provide a control device, a control method, and a program that can suppress an increase in power consumption while executing distortion compensation processing. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 2 is a block diagram illustrating an example of a control device according to the present disclosure. [Figure 2] 10 is a flowchart illustrating an example of a processing operation of a control device according to the present disclosure. [Figure 3] FIG. 1 is a block diagram illustrating an example of a communication device according to the present disclosure. [Figure 4] FIG. 2 is a diagram illustrating an example of the configuration of a control device. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments will be described with reference to the drawings. In this disclosure, the drawings may relate to one or more embodiments. Furthermore, each element in the drawings may apply to one or more embodiments. Furthermore, in the embodiments, identical or equivalent elements are given the same reference numerals, and redundant explanations will be omitted.

[0012] First Embodiment <Example of control device configuration> 1 is a block diagram illustrating an example of a control device according to the present disclosure. In FIG. 1, a control device 10 includes an acquisition unit 11 and a control processing unit 12.

[0013] The acquisition unit 11 acquires parameters based on the relative positional relationship between the first communication device and the second communication device. The first communication device may be, for example, an NTN (Non-Terrestrial Network) node. The second communication device may be a terrestrial station (for example, a mobile terminal or a terrestrial base station). The control device 10 may be mounted on the first communication device, which is an NTN node, or may be installed on the ground.

[0014] The "parameter based on the relative positional relationship between the first communication device and the second communication device" may be, for example, the angle formed by the direction in which the first communication device is located as seen from the second communication device relative to the horizontal direction of the second communication device. Hereinafter, this angle may be simply referred to as the "elevation angle."

[0015] Alternatively, the "parameter based on the relative positional relationship between the first communication device and the second communication device" may be, for example, an amount of antenna gain reduction according to the beam direction of the first communication device relative to the array antenna plane of the first communication device. The array antenna plane refers to a plane on which multiple antenna elements constituting the array antenna are arranged. The beam direction of the first communication device here refers to the direction of the beam used by the first communication device for communication with the second communication device. The beam direction of the first communication device is expressed, for example, by a combination of the angle that the beam direction makes with respect to a reference direction in the array antenna plane and the angle that the beam direction makes with respect to a normal to the array antenna plane. Note that the combination of the angle that the beam direction makes with respect to a reference direction in the array antenna plane and the angle that the beam direction makes with respect to a normal to the array antenna plane may be simply referred to as the "antenna angle" hereinafter.

[0016] Alternatively, the "parameter based on the relative positional relationship between the first communication device and the second communication device" may be, for example, the amount of distortion depending on the beam direction of the first communication device with respect to the array antenna plane of the first communication device. In other words, the "parameter based on the relative positional relationship between the first communication device and the second communication device" may be the amount of distortion depending on the antenna angle.

[0017] Alternatively, the "parameter based on the relative positional relationship between the first communication device and the second communication device" may be any combination of the above-mentioned elevation angle, the amount of antenna gain reduction according to the antenna angle, and the amount of distortion according to the antenna angle.

[0018] The control processing unit 12 controls whether or not to cause a distortion compensation processing unit (not shown) of the first communication device to perform nonlinear distortion compensation processing on transmission by the first communication device to the second communication device, based on parameters based on the relative positional relationship between the first communication device and the second communication device. The control processing unit 12 controls whether or not to cause the distortion compensation processing unit to perform nonlinear distortion compensation processing for each of multiple beams generated by the first communication device. In other words, the control processing unit 12 controls whether or not to cause the distortion compensation processing unit to perform nonlinear distortion compensation processing for each of multiple communication partner devices of the first communication device.

[0019] <Example of control device operation> FIG. 2 is a flowchart showing an example of the processing operation of the control device of the present disclosure.

[0020] The acquisition unit 11 acquires a parameter based on the relative positional relationship between the first communication device and the second communication device (step S11).

[0021] The control processing unit 12 controls whether or not to cause the distortion compensation processing unit of the first communication device to perform nonlinear distortion compensation processing for communication between the first communication device and the second communication device, based on parameters based on the relative positional relationship between the first communication device and the second communication device (step S12).

[0022] As described above, according to the first embodiment, the control processing unit 12 in the control device 10 controls whether or not to cause the distortion compensation processing unit of the first communication device to perform nonlinear distortion compensation processing for communication between the first communication device and the second communication device, based on parameters based on the relative positional relationship between the first communication device and the second communication device.

[0023] This configuration of the control device 10 allows the first communication device to perform nonlinear distortion compensation processing based on parameters that are based on the relative positional relationship between the first communication device and the second communication device, rather than having the first communication device perform nonlinear distortion compensation processing at any time. This makes it possible to suppress increases in power consumption while performing distortion compensation processing in the first communication device. This effect is particularly noticeable when the first communication device is an NTN node with strict power consumption restrictions.

[0024] Second Embodiment The configuration of the control device of the second embodiment is the same as the control device 10 of the first embodiment, so refer to Fig. 1. In the following, as an example, the first communication device is an NTN node, and the second communication device is a ground station.

[0025] In the control device 10 of the second embodiment, the acquisition unit 11 acquires a parameter based on the relative positional relationship between the first communication device and the second communication device. In the second embodiment, the acquisition unit 11 acquires information on the angle formed by the direction in which the first communication device exists as seen from the second communication device with respect to the horizontal direction of the second communication device, that is, the "elevation angle," as the "parameter based on the relative positional relationship between the first communication device and the second communication device."

[0026] Here, if the first communication device is an NTN node moving in orbit around the Earth, the smaller the elevation angle, the longer the distance between the first communication device and the second communication device. Therefore, the smaller the elevation angle, the greater the transmission power of the first communication device, and the more likely it is that the amplifier of the first communication device will operate in a nonlinear region. As a result, the more likely it is that nonlinear distortion will be included in the transmission signal. On the other hand, the larger the elevation angle, the shorter the distance between the first communication device and the second communication device. Therefore, the larger the elevation angle, the smaller the transmission power of the first communication device, and the more likely it is that the amplifier of the first communication device will operate in a linear region. As a result, the more likely it is that nonlinear distortion will be included in the transmission signal.

[0027] For this reason, in the control device 10 of the second embodiment, the control processing unit 12 controls the distortion compensation processing unit (not shown) of the first communication device to execute nonlinear distortion compensation processing if the value of the elevation angle is smaller than a predetermined threshold. On the other hand, if the value of the elevation angle is equal to or greater than the predetermined threshold, the control processing unit 12 controls the distortion compensation processing unit (not shown) of the first communication device not to execute nonlinear distortion compensation processing. In other words, when there is a high possibility that distortion is included in the transmission signal, the control processing unit 12 causes the distortion compensation processing unit (not shown) of the first communication device to execute nonlinear distortion compensation processing, but when there is a low possibility that distortion is included in the transmission signal, the control processing unit 12 does not execute nonlinear distortion compensation processing. This makes it possible to suppress an increase in power consumption while executing distortion compensation processing in the first communication device.

[0028] In addition, when the remaining power amount of the first communication device is below a predetermined level, the control processing unit 12 may perform control so as not to cause the distortion compensation processing unit (not shown) to perform nonlinear distortion compensation processing, regardless of the value of the parameter based on the above-mentioned relative positional relationship.

[0029] <Third embodiment> The configuration of the control device of the third embodiment is the same as that of the control device 10 of the first embodiment, so FIG. 1 will be referred to.

[0030] In the control device 10 of the third embodiment, the acquisition unit 11 acquires a parameter based on the relative positional relationship between the first communication device and the second communication device. In the third embodiment, the acquisition unit 11 acquires information on the amount of antenna gain reduction corresponding to the beam direction of the first communication device with respect to the array antenna plane of the first communication device as the "parameter based on the relative positional relationship between the first communication device and the second communication device." In other words, the acquisition unit 11 acquires information on the amount of antenna gain reduction corresponding to the antenna angle.

[0031] Here, the array antenna includes multiple antenna elements. The gain characteristics of each antenna element are such that the gain is highest in the direction directly in front of the antenna element, and the gain tends to decrease as the angle between the antenna element and the direction of the antenna element becomes larger. The gain characteristics of the entire array antenna also follow the same trend. Therefore, the larger the antenna angle, the greater the transmission power of the first communication device, and the more likely it is that the amplifier of the first communication device will operate in a nonlinear region. As a result, the more likely it is that nonlinear distortion will be included in the transmission signal. On the other hand, the smaller the antenna angle, the smaller the transmission power of the first communication device, and the more likely it is that the amplifier of the first communication device will operate in a linear region. As a result, the more likely it is that nonlinear distortion will be included in the transmission signal.

[0032] For this reason, in the control device 10 of the third embodiment, the control processing unit 12 controls the distortion compensation processing unit (not shown) of the first communication device to perform nonlinear distortion compensation processing if the value of the antenna gain reduction amount corresponding to the antenna angle is equal to or greater than a predetermined threshold. On the other hand, if the value of the antenna gain reduction amount corresponding to the antenna angle is smaller than the predetermined threshold, the control processing unit 12 controls the distortion compensation processing unit (not shown) of the first communication device not to perform nonlinear distortion compensation processing. That is, the control processing unit 12 causes the distortion compensation processing unit (not shown) of the first communication device to perform nonlinear distortion compensation processing when there is a high possibility that distortion is included in the transmission signal, but does not cause the distortion compensation processing to be performed when there is a low possibility that distortion is included in the transmission signal. This makes it possible to suppress an increase in power consumption while performing distortion compensation processing in the first communication device.

[0033] In addition, when the remaining power amount of the first communication device is below a predetermined level, the control processing unit 12 may perform control so as not to cause the distortion compensation processing unit (not shown) to perform nonlinear distortion compensation processing, regardless of the value of the parameter based on the above-mentioned relative positional relationship.

[0034] <Fourth embodiment> The configuration of the control device of the fourth embodiment is the same as that of the control device 10 of the first embodiment, so FIG. 1 will be referred to.

[0035] In the control device 10 of the third embodiment, the acquisition unit 11 acquires a parameter based on the relative positional relationship between the first communication device and the second communication device. In the third embodiment, the acquisition unit 11 acquires information on the amount of distortion according to the beam direction of the first communication device with respect to the array antenna plane of the first communication device as the "parameter based on the relative positional relationship between the first communication device and the second communication device."

[0036] Here, the array antenna includes multiple antenna elements. Due to the impedance matching conditions between each antenna element and the amplifier in the first communication device, the amount of distortion tends to vary when the beam direction of the first communication device with respect to the array antenna plane of the first communication device varies. The amount of distortion means, for example, the amount of signal components corresponding to unwanted frequency components contained in the transmitted signal.

[0037] For this reason, in the control device 10 of the fourth embodiment, the control processing unit 12 controls the distortion compensation processing unit (not shown) of the first communication device to perform nonlinear distortion compensation processing if the value of the distortion amount according to the beam direction is equal to or greater than a predetermined threshold. On the other hand, if the value of the distortion amount according to the beam direction is smaller than the predetermined threshold, the control processing unit 12 controls the distortion compensation processing unit (not shown) of the first communication device not to perform nonlinear distortion compensation processing. In other words, when there is a high possibility that distortion is included in the transmission signal, the control processing unit 12 causes the distortion compensation processing unit (not shown) of the first communication device to perform nonlinear distortion compensation processing, but when there is a low possibility that distortion is included in the transmission signal, the control processing unit 12 does not cause the distortion compensation processing to be performed. This makes it possible to suppress an increase in power consumption while performing distortion compensation processing in the first communication device.

[0038] In addition, when the remaining power amount of the first communication device is below a predetermined level, the control processing unit 12 may perform control so as not to cause the distortion compensation processing unit (not shown) to perform nonlinear distortion compensation processing, regardless of the value of the parameter based on the above-mentioned relative positional relationship.

[0039] Fifth Embodiment In the fifth embodiment, the control device is included in the first communication device. In the following, as an example, the first communication device is an NTN node, and the second communication device is a ground station.

[0040] Fig. 3 is a block diagram showing an example of a communication device according to the present disclosure. In Fig. 3, communication device 50 includes location information acquisition unit 51, location information acquisition unit 52, beam control unit 53, transmission power control unit 54, distortion compensation processing unit 55, communication processing unit 56, antenna 57, and control device 20. Antenna 57 includes an array antenna composed of multiple antenna elements. Here, communication device 50 corresponds to the first communication device described above.

[0041] The position information acquisition unit 51 acquires information related to the position of the first communication device. For example, the position information acquisition unit 51 may hold trajectory information of the first communication device (e.g., three-dimensional coordinates of each point on the trajectory and the estimated time of passing through each point). Then, the position information acquisition unit 51 may acquire the current position of the first communication device based on the trajectory information of the first communication device and the current time.

[0042] The location information acquisition unit 52 acquires information related to the location of the second communication device. For example, the second communication device acquires location information (three-dimensional coordinates) of the second communication device using a GPS (Global Positioning System) function. Then, the location information acquisition unit 52 may acquire the location information of the second communication device from the second communication device. Alternatively, the location information acquisition unit 52 may acquire the location information of the second communication device from another NTN node in the vicinity of the first communication device, or from a terrestrial network node that manages the location information of the second communication device.

[0043] The communication processing unit 56 receives the transmission data output from the distortion compensation processing unit 55 and outputs a radio signal corresponding to the transmission data. The communication processing unit 56 includes, for example, a digital-to-analog conversion unit, a frequency adjustment unit, a phase adjustment unit, and an amplification unit, all of which are not shown.

[0044] The beam control unit 53 calculates a beam direction for the second communication device based on the position of the first communication device acquired by the position information acquisition unit 51, the position of the second communication device acquired by the position information acquisition unit 52, and attitude information of the first communication device (a reference direction in the array antenna plane of the first communication device and a direction perpendicular to the array antenna plane). The beam control unit 53 may also adjust the direction of the beam for the second communication device by adjusting the phases of multiple phase adjusters included in a phase adjustment unit (not shown) of the communication processing unit 56.

[0045] The transmission power control unit 54 controls the transmission power of a signal transmitted to the second communication device. For example, the transmission power control unit 54 may calculate the distance between the first communication device and the second communication device based on the position of the first communication device acquired by the position information acquisition unit 51 and the position of the second communication device acquired by the position information acquisition unit 52, and determine the transmission power based on the calculated distance. The transmission power control unit 54 may also adjust the amplification factor of an amplifier (not shown) of the communication processing unit 56 to adjust the transmission power.

[0046] When the distortion compensation processing unit 55 receives an execution command from the control device 20, it executes distortion compensation processing on the input transmission data. On the other hand, when the distortion compensation processing unit 55 receives a stop command from the control device 20, it stops the distortion compensation processing on the input transmission data. For example, the distortion compensation processing unit 55 receives the output signal of the communication processing unit 56 as a feedback signal, and calculates a distortion compensation coefficient based on the feedback signal. Then, the distortion compensation processing unit 55 performs distortion compensation processing using the calculated distortion compensation coefficient.

[0047] Similar to the control device 10, the control device 20 controls whether or not the distortion compensation processing unit 55 of the communication device 50 performs nonlinear distortion compensation processing for communication between the communication device 50 and the second communication device based on parameters based on the relative positional relationship between the communication device 50 and the second communication device.

[0048] The control device 20 includes an acquisition unit 21 and a control processing unit 22 .

[0049] Similar to the acquisition unit 11, the acquisition unit 21 acquires parameters based on the relative positional relationship between the first communication device and the second communication device.

[0050] Acquisition unit 21 may calculate the angle formed by the direction in which communication device 50 exists as seen from the second communication device with respect to the horizontal direction of the second communication device, i.e., the elevation angle. For example, acquisition unit 21 identifies a vertical vector corresponding to the position of the second communication device acquired by position information acquisition unit 52. Furthermore, acquisition unit 21 identifies a vector pointing from the position of the second communication device to the position of the first communication device, from the position of the first communication device acquired by position information acquisition unit 51 and the position of the second communication device acquired by position information acquisition unit 52. Then, acquisition unit 21 calculates the elevation angle based on the vertical vector and the vector pointing from the position of the second communication device to the position of the first communication device.

[0051] Furthermore, the acquisition unit 21 may calculate the amount of antenna gain reduction corresponding to the beam direction of the communication device 50 with respect to the array antenna plane of the communication device 50. For example, the acquisition unit 21 may store a first correspondence table that associates a plurality of beam direction candidates with the amount of antenna gain reduction corresponding to each beam direction candidate. Then, the acquisition unit 21 may calculate the amount of antenna gain reduction corresponding to the beam direction determined by the beam control unit 53 based on the beam direction determined by the beam control unit 53 and the first correspondence table.

[0052] Furthermore, the acquiring unit 21 may calculate the amount of distortion corresponding to the beam direction of the communication device 50 with respect to the array antenna plane of the communication device 50. For example, the acquiring unit 21 may store a second correspondence table in which a plurality of beam direction candidates are associated with the amount of distortion corresponding to each beam direction candidate. Then, the acquiring unit 21 may calculate the amount of distortion corresponding to the beam direction determined by the beam control unit 53 based on the beam direction determined by the beam control unit 53 and the second correspondence table.

[0053] Similar to the control processing unit 12, the control processing unit 22 controls whether or not the distortion compensation processing unit 55 of the communication device 50 performs nonlinear distortion compensation processing for transmission by the first communication device to the second communication device, based on parameters based on the relative positional relationship between the communication device 50 and the second communication device.

[0054] When the control processing unit 22 determines that the distortion compensation processing unit 55 should execute nonlinear distortion compensation processing, it sends an execution command to the distortion compensation processing unit 55. On the other hand, when the control processing unit 22 determines that the distortion compensation processing unit 55 should not execute nonlinear distortion compensation processing, it sends a stop command to the distortion compensation processing unit 55.

[0055] In addition, when the remaining power amount of the communication device 50 is below a predetermined level, the control processing unit 22 may perform control so as not to cause the distortion compensation processing unit 55 to perform nonlinear distortion compensation processing, regardless of the value of the parameter based on the above-mentioned relative positional relationship.

[0056] <Modification of the Fifth Embodiment> In the above description, the transmission power control unit 54 calculates the distance between the first communication device and the second communication device based on the positions of the first communication device and the second communication device, and determines the transmission power of a signal to be transmitted to the second communication device based on the calculated distance. However, the present disclosure is not limited to this. For example, the transmission power control unit 54 may control whether the amplifier of the communication processing unit 56 operates in a nonlinear region or a linear region based on a parameter based on the relative positional relationship between the first communication device and the second communication device. In this case, the transmission power control unit 54 may acquire the parameter based on the relative positional relationship between the first communication device and the second communication device from the acquisition unit 21. The transmission power control unit 54 may be included in the control device 20.

[0057] For example, if the elevation angle value is smaller than a predetermined threshold, the transmission power control unit 54 may control the amplifier of the communication processing unit 56 to operate in a nonlinear region. On the other hand, if the elevation angle value is equal to or larger than a predetermined threshold, the transmission power control unit 54 may control the amplifier of the communication processing unit 56 to operate in a linear region.

[0058] Alternatively, the transmission power control unit 54 may control the amplifier of the communication processing unit 56 to operate in a nonlinear region if the value of the antenna gain reduction amount according to the antenna angle is equal to or greater than a predetermined threshold. On the other hand, the control processing unit 12 may control the amplifier of the communication processing unit 56 to operate in a linear region if the value of the antenna gain reduction amount according to the antenna angle is smaller than a predetermined threshold.

[0059] Alternatively, the transmission power control unit 54 may control the amplifier of the communication processing unit 56 to operate in a nonlinear region if the value of the distortion amount according to the beam direction is equal to or greater than a predetermined threshold. On the other hand, the control processing unit 12 may control the amplifier of the communication processing unit 56 to operate in a linear region if the value of the distortion amount according to the beam direction is smaller than a predetermined threshold.

[0060] When the control processing unit 22 operates the amplifier of the communication processing unit 56 in a nonlinear region, the control processing unit 22 may cause the distortion compensation processing unit 55 to perform nonlinear distortion compensation processing. On the other hand, when the control processing unit 22 operates the amplifier of the communication processing unit 56 in a linear region, the control processing unit 22 may not cause the distortion compensation processing unit 55 to perform nonlinear distortion compensation processing.

[0061] <Other embodiments> FIG. 4 is a diagram illustrating an example configuration of a control device. In FIG. 4, the control device 100 includes a processor 101 and a memory 102. The processor 101 may be, for example, a microprocessor, a microprocessing unit (MPU), or a central processing unit (CPU). The processor 101 may include multiple processors. The memory 102 is configured by a combination of a volatile memory and a nonvolatile memory. The memory 102 may include storage located away from the processor 101. In this case, the processor 101 may access the memory 102 via an I (Input) / O (Output) interface (not shown).

[0062] The control devices 10 and 20 of the first to fifth embodiments may each have the configuration shown in FIG. 4 . The acquisition units 11 and 21 and the control processing units 12 and 22 of the control devices 10 and 20 of the first to fifth embodiments may be implemented by the processor 101 reading and executing a program stored in the memory 102. That is, the control devices 10 and 20 of the first to fifth embodiments may be implemented by software. The program may be stored in various types of non-transitory computer-readable media and supplied to the control devices 10 and 20. Examples of non-transitory computer-readable media include magnetic recording media (e.g., flexible disks, magnetic tapes, hard disk drives) and magneto-optical recording media (e.g., magneto-optical disks). Further examples of non-transitory computer-readable media include CD-ROMs (Read Only Memory), CD-Rs, and CD-R / Ws. Further examples of non-transitory computer-readable media include semiconductor memories. The semiconductor memory includes, for example, a mask ROM, a programmable ROM (PROM), an erasable PROM (EPROM), a flash ROM, and a random access memory (RAM). The program may also be supplied to the control devices 10 and 20 by various types of transitory computer-readable media. Examples of transitory computer-readable media include electrical signals, optical signals, and electromagnetic waves. The transitory computer-readable media can supply the program to the control devices 10 and 20 via a wired communication path such as an electrical wire or optical fiber, or via a wireless communication path.

[0063] Alternatively, the acquisition units 11, 21 and the control processing units 12, 22 of the control devices 10, 20 of the first to fifth embodiments may each be realized by dedicated hardware. Furthermore, some or all of the components of each device may be realized by general-purpose or dedicated circuits, processors, etc., or a combination of these. These may be configured by a single chip, or by multiple chips connected via a bus. Some or all of the components of each device may be realized by a combination of the above-mentioned circuits, etc., and a program. Furthermore, a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), an FPGA (Field-Programmable Gate Array), a quantum processor (quantum computer control chip), etc., may be used as the processor.

[0064] Although the present invention has been described above with reference to the embodiments, the present invention is not limited to the above. Various modifications that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the invention. Furthermore, each embodiment can be combined with other embodiments as appropriate.

[0065] Each drawing is merely an example for describing one or more embodiments. Each drawing may relate not only to one particular embodiment, but also to one or more other embodiments. As will be understood by those skilled in the art, various features or steps described with reference to any one drawing can be combined with features or steps shown in one or more other drawings to create, for example, an embodiment not explicitly shown or described. Not all features or steps shown in any one drawing are necessary to describe an exemplary embodiment, and some features or steps may be omitted. The order of steps described in any drawing may be changed as appropriate.

[0066] A part or all of the above-described embodiments can be described as, but not limited to, the following supplementary notes. (Appendix 1) A control device that controls a communication device that performs wireless communication with another communication device, an acquisition unit that acquires parameters based on a relative positional relationship between the other communication device and the communication device; A control device comprising: a control processing unit that controls whether or not to cause a distortion compensation processing execution unit to execute nonlinear distortion compensation processing based on a parameter based on a relative positional relationship between the other communication device and the communication device. (Appendix 2) the control processing unit causes the distortion compensation processing execution unit to execute nonlinear distortion compensation processing when the amplifier of the communication device is operated in a nonlinear region, and does not cause the distortion compensation processing execution unit to execute nonlinear distortion compensation processing when the amplifier is operated in a linear region; and Equipped with 10. The control device of claim 1. (Appendix 3) The parameter based on the relative positional relationship is an angle formed by a direction in which the communication device exists as seen from the other communication device with respect to a horizontal direction of the other communication device; an antenna gain reduction amount according to a beam direction of the communication device with respect to an array antenna plane of the communication device; A distortion amount corresponding to the beam direction of the communication device relative to the array antenna surface of the communication device or any combination thereof, 3. The control device according to claim 1 or 2. (Appendix 4) the control processing unit controls whether or not to cause the distortion compensation processing execution unit to execute nonlinear distortion compensation processing for each of a plurality of beams generated by the communication device. 4. The control device of claim 3. (Appendix 5) when the parameter based on the relative positional relationship is an antenna gain reduction amount according to a beam direction of the communication device with respect to an array antenna plane of the communication device, the control processing unit causes the distortion compensation processing execution unit to execute nonlinear distortion compensation processing if the value of the antenna gain reduction amount is equal to or greater than a first threshold, and does not cause the distortion compensation processing execution unit to execute nonlinear distortion compensation processing if the value of the antenna gain reduction amount is smaller than the first threshold. 3. The control device according to claim 1 or 2. (Appendix 6) when the parameter based on the relative positional relationship is an angle formed by a direction in which the communication device exists as seen from the other communication device with respect to a horizontal direction of the other communication device, if the value of the angle is smaller than a second threshold, the control processing unit causes the distortion compensation processing execution unit to execute nonlinear distortion compensation processing, and if the value of the angle is equal to or greater than the second threshold, does not cause the distortion compensation processing execution unit to execute nonlinear distortion compensation processing. 3. The control device according to claim 1 or 2. (Appendix 7) when the parameter based on the relative positional relationship is a distortion amount corresponding to a beam direction of the communication device with respect to an array antenna plane of the communication device, if the value of the distortion amount is equal to or greater than a third threshold, the control processing unit causes the distortion compensation processing execution unit to execute nonlinear distortion compensation processing, and if the value of the distortion amount is smaller than the third threshold, does not cause the distortion compensation processing execution unit to execute nonlinear distortion compensation processing. 3. The control device according to claim 1 or 2. (Appendix 8) when the remaining power amount of the communication device is equal to or less than a predetermined level, the control processing unit does not cause the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing regardless of the value of the parameter based on the relative positional relationship. 8. The control device according to any one of claims 1 to 7. (Appendix 9) the distortion compensation processing execution unit; A control device according to any one of appendices 1 to 8; A communication device comprising: (Appendix 10) The communication device is an NTN (Non-Terrestrial Network) node. 10. The communication device of claim 9. (Appendix 11) A control method executed by a control device that controls a communication device that wirelessly communicates with another communication device, a control method including controlling whether or not to cause a distortion compensation processing execution unit to execute nonlinear distortion compensation processing, based on a parameter based on a relative positional relationship between the other communication device and the communication device. (Appendix 12) Controlling whether to cause the distortion compensation processing execution unit to execute nonlinear distortion compensation processing includes causing the distortion compensation processing execution unit to execute nonlinear distortion compensation processing when an amplifier of the communication device is operated in a nonlinear region, and not causing the distortion compensation processing execution unit to execute nonlinear distortion compensation processing when the amplifier is operated in a linear region. 12. The control method of claim 11. (Appendix 13) The parameter based on the relative positional relationship is an angle formed by a direction in which the communication device exists as seen from the other communication device with respect to a horizontal direction of the other communication device; an antenna gain reduction amount according to a beam direction of the communication device with respect to an array antenna plane of the communication device; A distortion amount corresponding to the beam direction of the communication device relative to the array antenna surface of the communication device or any combination thereof, 13. The control method according to claim 11 or 12. (Appendix 14) Controlling whether to cause the distortion compensation processing execution unit to execute nonlinear distortion compensation processing includes controlling whether to cause the distortion compensation processing execution unit to execute nonlinear distortion compensation processing for each of a plurality of beams generated by the communication device. 14. The control method of claim 13. (Appendix 15) Controlling whether to cause the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing includes, when the parameter based on the relative positional relationship is an antenna gain reduction amount according to a beam direction of the communication device with respect to an array antenna plane of the communication device, causing the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing if the value of the antenna gain reduction amount is equal to or greater than a first threshold, and not causing the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing if the value of the antenna gain reduction amount is smaller than the first threshold. 13. The control method according to claim 11 or 12. (Appendix 16) Controlling whether to cause the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing includes, when the parameter based on the relative positional relationship is an angle formed by a direction in which the communication device exists as seen from the other communication device with respect to a horizontal direction of the other communication device, causing the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing if the value of the angle is smaller than a second threshold value, and not causing the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing if the value of the angle is equal to or greater than the second threshold value. 13. The control method according to claim 11 or 12. (Appendix 17) Controlling whether to cause the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing includes, when the parameter based on the relative positional relationship is a distortion amount corresponding to a beam direction of the communication device with respect to an array antenna plane of the communication device, causing the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing if the value of the distortion amount is equal to or greater than a third threshold, and not causing the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing if the value of the distortion amount is smaller than the third threshold. 13. The control method according to claim 11 or 12. (Appendix 18) controlling whether to cause the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing includes not causing the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing when the remaining power amount of the communication device is equal to or less than a predetermined level, regardless of the value of the parameter based on the relative positional relationship. 18. A control method according to any one of appendices 11 to 17. (Appendix 19) A program for causing a control device that controls a communication device that wirelessly communicates with another communication device to execute a process, The program includes controlling whether or not to cause a distortion compensation processing execution unit to execute nonlinear distortion compensation processing based on a parameter based on a relative positional relationship between the other communication device and the communication device. (Appendix 20) Controlling whether to cause the distortion compensation processing execution unit to execute nonlinear distortion compensation processing includes causing the distortion compensation processing execution unit to execute nonlinear distortion compensation processing when an amplifier of the communication device is operated in a nonlinear region, and not causing the distortion compensation processing execution unit to execute nonlinear distortion compensation processing when the amplifier is operated in a linear region. The program described in Appendix 19. (Appendix 21) The parameter based on the relative positional relationship is an angle formed by a direction in which the communication device exists as seen from the other communication device with respect to a horizontal direction of the other communication device; an antenna gain reduction amount according to a beam direction of the communication device with respect to an array antenna plane of the communication device; A distortion amount corresponding to the beam direction of the communication device relative to the array antenna surface of the communication device or any combination thereof, 21. The program according to claim 19 or 20. (Appendix 22) Controlling whether to cause the distortion compensation processing execution unit to execute nonlinear distortion compensation processing includes controlling whether to cause the distortion compensation processing execution unit to execute nonlinear distortion compensation processing for each of a plurality of beams generated by the communication device. The program described in Appendix 21. (Appendix 23) Controlling whether to cause the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing includes, when the parameter based on the relative positional relationship is an antenna gain reduction amount according to a beam direction of the communication device with respect to an array antenna plane of the communication device, causing the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing if the value of the antenna gain reduction amount is equal to or greater than a first threshold, and not causing the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing if the value of the antenna gain reduction amount is smaller than the first threshold. 21. The program according to claim 19 or 20. (Appendix 24) Controlling whether to cause the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing includes, when the parameter based on the relative positional relationship is an angle formed by a direction in which the communication device exists as seen from the other communication device with respect to a horizontal direction of the other communication device, causing the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing if the value of the angle is smaller than a second threshold value, and not causing the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing if the value of the angle is equal to or greater than the second threshold value. 21. The program according to claim 19 or 20. (Appendix 25) Controlling whether to cause the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing includes, when the parameter based on the relative positional relationship is a distortion amount corresponding to a beam direction of the communication device with respect to an array antenna plane of the communication device, causing the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing if the value of the distortion amount is equal to or greater than a third threshold, and not causing the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing if the value of the distortion amount is smaller than the third threshold. 21. The program according to claim 19 or 20. (Appendix 26) controlling whether to cause the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing includes not causing the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing when the remaining power amount of the communication device is equal to or less than a predetermined level, regardless of the value of the parameter based on the relative positional relationship. 26. The program of any one of appendices 19 to 25. [Explanation of symbols]

[0067] 10 Control device 11 Acquisition Department 12 Control processing section 20 Control device 21 Acquisition Department 22 Control processing section 50 Communication equipment 51 Location information acquisition section 52 Location information acquisition section 53 Beam control section 54 Transmission power control section 55 Distortion compensation processing unit 56 Communication processing unit 57 Antenna

Claims

1. A control device that controls a communication device that performs wireless communication with another communication device, an acquisition unit that acquires parameters based on a relative positional relationship between the other communication device and the communication device; A control device comprising: a control processing unit that controls whether or not to cause a distortion compensation processing execution unit to execute nonlinear distortion compensation processing based on a parameter based on a relative positional relationship between the other communication device and the communication device.

2. The parameter based on the relative positional relationship is an angle formed by a direction in which the communication device exists as seen from the other communication device with respect to a horizontal direction of the other communication device; an antenna gain reduction amount according to a beam direction of the communication device with respect to an array antenna plane of the communication device; A distortion amount corresponding to the beam direction of the communication device relative to the array antenna surface of the communication device or any combination thereof, The control device according to claim 1 .

3. the control processing unit controls whether or not to cause the distortion compensation processing execution unit to execute nonlinear distortion compensation processing for each of a plurality of beams generated by the communication device. The control device according to claim 2.

4. when the parameter based on the relative positional relationship is an antenna gain reduction amount corresponding to a beam direction of the communication device with respect to an array antenna plane of the communication device, the control processing unit causes the distortion compensation processing execution unit to execute nonlinear distortion compensation processing if the value of the antenna gain reduction amount is equal to or greater than a first threshold, and does not cause the distortion compensation processing execution unit to execute nonlinear distortion compensation processing if the value of the antenna gain reduction amount is smaller than the first threshold. The control device according to claim 1 or 2.

5. when the parameter based on the relative positional relationship is an angle formed by a direction in which the communication device exists as seen from the other communication device with respect to a horizontal direction of the other communication device, if the value of the angle is smaller than a second threshold, the control processing unit causes the distortion compensation processing execution unit to execute nonlinear distortion compensation processing, and if the value of the angle is equal to or greater than the second threshold, does not cause the distortion compensation processing execution unit to execute nonlinear distortion compensation processing. The control device according to claim 1 or 2.

6. when the parameter based on the relative positional relationship is a distortion amount corresponding to a beam direction of the communication device with respect to an array antenna plane of the communication device, if the value of the distortion amount is equal to or greater than a third threshold, the control processing unit causes the distortion compensation processing execution unit to execute nonlinear distortion compensation processing, and if the value of the distortion amount is smaller than the third threshold, does not cause the distortion compensation processing execution unit to execute nonlinear distortion compensation processing. The control device according to claim 1 or 2.

7. when the remaining power amount of the communication device is equal to or less than a predetermined level, the control processing unit does not cause the distortion compensation processing execution unit to execute the nonlinear distortion compensation processing regardless of the value of the parameter based on the relative positional relationship. The control device according to claim 1 or 2.

8. A control method executed by a control device that controls a communication device that wirelessly communicates with another communication device, a control method including controlling whether or not to cause a distortion compensation processing execution unit to execute nonlinear distortion compensation processing, based on a parameter based on a relative positional relationship between the other communication device and the communication device.

9. A program for causing a control device that controls a communication device that wirelessly communicates with another communication device to execute a process, The processing includes controlling whether or not to cause a distortion compensation processing execution unit to execute nonlinear distortion compensation processing based on a parameter based on a relative positional relationship between the other communication device and the communication device.

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