Power control method and control terminal of over-the-horizon wireless communication system

Abstract

The present invention is applicable to the field of wireless communication technology, and provides a power control method and control terminal for a beyond-line-of-sight wireless communication system, the method comprising: determining an unobstructed communication distance between a transmitter and a receiver, and controlling the communication between the transmitter and the receiver according to the unobstructed communication distance; obtaining the communication status between the transmitter and the receiver; if the communication status between the transmitter and the receiver is a failure, determining the obstructed communication distance and scattering angle between the transmitter and the receiver, and controlling the communication between the transmitter and the receiver according to the obstructed communication distance and scattering angle. The present invention determines the transmission power according to the unobstructed communication distance, and if the communication fails, determines the transmission power according to the obstructed communication distance, so as to prevent the beyond-line-of-sight wireless communication system from being unable to communicate or causing equipment damage due to excessive power when it is maneuvered or moved.

Description

Technical Field

[0001] The present invention belongs to the technical field of wireless communications, and in particular relates to a power control method and a control terminal for a beyond-line-of-sight wireless communication system. Background Art

[0002] Beyond-line-of-sight wireless communication is a kind of beyond-line-of-sight "bent-pipe transmission" that uses the forward scattering effect of radio waves by inhomogeneous bodies in the high-altitude troposphere atmospheric medium. With its advantages such as long single-hop span, large communication capacity, small transmission delay, free channels, and all-weather reliable communication, beyond-line-of-sight wireless communication has been widely used in the field of wireless communication. Beyond-line-of-sight wireless communication systems usually use high-gain directional antennas and high-power amplifiers. The equivalent isotropic radiated power of the system is above 70dBm, and the radiated power is relatively large.

[0003] In the prior art, the over-the-horizon wireless communication system is usually fixed in position. If the over-the-horizon wireless communication system is mobile or moved, the received signal may be too large to communicate, or even burn the equipment in serious cases, due to the high transmission power of the transmitting end, the large antenna gain of the receiving end, and the low link loss. Summary of the invention

[0004] In view of this, an embodiment of the present invention provides a power control method and a control terminal for a beyond-line-of-sight wireless communication system to solve the problem in the prior art that when the beyond-line-of-sight wireless communication system is moved for use, the received signal may be too large to communicate.

[0005] A first aspect of an embodiment of the present invention provides a power control method for a beyond-line-of-sight wireless communication system, including:

[0006] Determine an unobstructed communication distance between a transmitter and a receiver, and control communication between the transmitter and the receiver according to the unobstructed communication distance;

[0007] Get the communication status between the transmitter and the receiver;

[0008] If the communication status between the transmitter and the receiver is failed, the blocked communication distance and the scattering angle between the transmitter and the receiver are determined, and the communication between the transmitter and the receiver is controlled according to the blocked communication distance and the scattering angle.

[0009] A second aspect of an embodiment of the present invention provides a power control device for a beyond-line-of-sight wireless communication system, including:

[0010] A first communication module, used to determine an unobstructed communication distance between the transmitting end and the receiving end, and control the communication between the transmitting end and the receiving end according to the unobstructed communication distance;

[0011] A communication status acquisition module is used to acquire the communication status between the transmitting end and the receiving end;

[0012] The second communication module is used to determine the blocked communication distance and scattering angle between the transmitting end and the receiving end if the communication status between the transmitting end and the receiving end is failed, and control the communication between the transmitting end and the receiving end according to the blocked communication distance and the scattering angle.

[0013] A third aspect of an embodiment of the present invention provides a control terminal, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the power control method for a beyond-line-of-sight wireless communication system provided in the first aspect of the embodiment of the present invention are implemented.

[0014] A fourth aspect of an embodiment of the present invention provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps of the power control method for a beyond-line-of-sight wireless communication system provided in the first aspect of the embodiment of the present invention are implemented.

[0015] The embodiment of the present invention provides a power control method and control terminal for a beyond-line-of-sight wireless communication system, the method comprising: determining an unobstructed communication distance between a transmitter and a receiver, and controlling the communication between the transmitter and the receiver according to the unobstructed communication distance; obtaining the communication status between the transmitter and the receiver; if the communication status between the transmitter and the receiver is failed, determining the obstructed communication distance and scattering angle between the transmitter and the receiver, and controlling the communication between the transmitter and the receiver according to the obstructed communication distance and scattering angle. Since the power of the transmitter when there is no obstruction is smaller than the transmission power required when there is obstruction, the embodiment of the present invention first determines the transmission power (low power) according to the unobstructed communication distance, and if the communication fails, determines the transmission power (high power) according to the obstructed communication distance, so as to prevent the beyond-line-of-sight wireless communication system from being unable to communicate or causing equipment damage due to excessive power when it is maneuvered or moved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a schematic diagram of an implementation flow of a power control method for a beyond-line-of-sight wireless communication system provided by an embodiment of the present invention;

[0018] Figure 2 is a schematic diagram of a power control device for a beyond-horizon wireless communication system provided by an embodiment of the present invention;

[0019] Figure 3 is a schematic diagram of a control terminal provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0020] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0021] In order to illustrate the technical solution of the present invention, specific embodiments are provided below for illustration.

[0022] refer to Figure 1 , an embodiment of the present invention provides a power control method for a beyond-line-of-sight wireless communication system, comprising:

[0023] S101: Determine an unobstructed communication distance between a transmitter and a receiver, and control communication between the transmitter and the receiver according to the unobstructed communication distance;

[0024] S102: Acquire the communication status between the transmitting end and the receiving end;

[0025] S103: If the communication status between the transmitter and the receiver is failed, determine the blocked communication distance and scattering angle between the transmitter and the receiver, and control the communication between the transmitter and the receiver according to the blocked communication distance and scattering angle.

[0026] When the transmitter and the receiver communicate directly without obstruction, the communication distance is shorter and the link loss is less, so the required transmission power is also smaller; similarly, when there is obstruction in communication, the transmission power of the transmitter is larger. In the embodiment of the present invention, in order to prevent the beyond-line-of-sight wireless communication system from being unable to communicate or causing damage to the equipment due to excessive power when it is maneuvered or moved, the transmitter power is first determined according to the unobstructed communication distance in the embodiment of the present invention, and low-power communication is used. If the communication is unsuccessful, the transmitter power is determined according to the obstructed distance to prevent excessive power from causing damage to the equipment. At the same time, since the unobstructed communication distance is simple to calculate, using unobstructed communication first saves computing resources.

[0027] In some embodiments, S101 may include:

[0028] S1011: Obtain the longitude and latitude of the transmitting end and the longitude and latitude of the receiving end;

[0029] S1012: Determine an unobstructed communication distance according to the longitude and latitude of the transmitting end and the longitude and latitude of the receiving end;

[0030] S1013: Determine a first link loss of the communication channel according to the unobstructed communication distance;

[0031] S1014: Determine a first transmission power of the transmitting end according to the first link loss, and control communication between the transmitting end and the receiving end according to the first transmission power.

[0032] In an embodiment of the present invention, when there is no obstruction between the transmitter and the receiver, since the earth is spherical, the unobstructed communication distance can be directly determined according to the longitude and latitude of the transmitter and the receiver, and then the first link loss is determined according to the unobstructed communication distance, and the first transmission power of the transmitter is determined according to the first link loss, and then the power of the transmitter is adjusted according to the first transmission power. For example, the effective radiation power of the beyond-line-of-sight wireless communication system (that is, the transmission power of the transmitter) minus the link loss of the channel, plus the gain of the receiving antenna is the maximum power of the receiving end. If the maximum power of the receiving end is less than the rated maximum power of the receiving end (that is, the maximum receivable signal power), it means that the beyond-line-of-sight wireless communication system can work normally when the transmitter works at the current power. If the maximum power of the receiving end is greater than the rated maximum power of the receiving end, it exceeds the normal working range of the receiving end and may not work normally. Therefore, it is necessary to control the power reduction of the transmitting end so that the maximum power of the receiving end is within the normal working range to ensure normal communication.

[0033] In the embodiment of the present invention, when the beyond-line-of-sight wireless communication system is in mobile operation, the power of the transmitting end is dynamically adjusted to prevent the beyond-line-of-sight wireless communication system from being unable to communicate or causing equipment damage due to excessive power when the position of the beyond-line-of-sight wireless communication system changes.

[0034] In some embodiments, S103 may include:

[0035] S1031: If the communication status between the transmitting end and the receiving end is failed, obtaining the longitude and latitude of the transmitting end and the longitude and latitude of the receiving end;

[0036] S1032: Draw an elevation profile according to the longitude and latitude of the transmitting end and the longitude and latitude of the receiving end;

[0037] S1033: Determine the blocked communication distance and scattering angle according to the elevation profile;

[0038] S1034: Determine a second link loss of the communication channel according to the blocked communication distance and the scattering angle;

[0039] S1035: Determine a second transmission power of the transmitting end according to the second link loss, and control communication between the transmitting end and the receiving end according to the second transmission power.

[0040] If the communication fails using the transmission power determined by the unobstructed communication method, it means that there may be obstruction between the transmitter and the receiver. At this time, draw an elevation profile to determine the obstructed communication distance, and then determine the link loss based on the obstructed communication distance, so as to increase the power of the transmitter and try to communicate.

[0041] In some embodiments, S1034 may include:

[0042] 1. Determine the second link loss according to the blocked communication distance, the scattering angle and the first formula;

[0043] The first formula can be:

[0044] L a =L(50)+Y(q)+L A

[0045] L(50)=30log(f)+30log(1000θ)+10log(d)+L N +L c +F

[0046] L A =A(d c )*B(f)

[0047] Among them, L a is the second link loss; L(50) is the median loss; Y(q) is the fading depth with a probability of (1-q)%; f is the radio frequency, θ is the scattering angle, d is the unobstructed communication distance, L N is the common volume height factor, L c is the dielectric coupling loss, F is the climate calibration factor; L A is d c function, A() is d c is a function of , and B() is a function of f.

[0048] In some embodiments, S1035 may include:

[0049] 1. Determine a second transmit power according to the second link loss and the second formula;

[0050] 2. Controlling communication between the transmitting end and the receiving end according to the second transmission power;

[0051] The second formula can be:

[0052] P s2 =L a -G r +P rr

[0053] Among them, P s2 is the second transmission power, La is the second link loss, G r is the receiving antenna gain, P rr is the maximum receivable signal power.

[0054] In the embodiment of the present invention, the power received by the receiving end should not be greater than the maximum receivable signal power P rr , the power received by the receiving end is P s2 -L a +G r ≤P rr At the same time, if the transmitting power is too small, the communication signal will be attenuated during the communication process, and the receiving end may not be able to receive the communication signal. Therefore, the maximum power value that meets the above conditions is selected, that is, P s2 -L a +G r =P rr It is neither too small to cause the receiving end to fail to receive the communication signal, nor too large to cause the receiving end to fail to receive the communication signal. It ensures that the communication signal can be received by the receiving end, thus ensuring the communication quality.

[0055] In some embodiments, after determining the second transmit power according to the second link loss and the second formula, S1035 may further include:

[0056] 3. Determine the path elevation angle between the transmitter and the receiver based on the elevation map;

[0057] 4. Update the second transmit power according to the path elevation angle to obtain an updated second transmit power;

[0058] The controlling the communication between the transmitting end and the receiving end according to the second transmission power specifically includes: controlling the communication between the transmitting end and the receiving end according to the updated second transmission power.

[0059] In an embodiment of the present invention, in order to avoid calculation errors caused by changes in terrain information, which may lead to excessive power and cause malfunctions, the embodiment of the present invention should also ensure that the power received by the receiving end is not greater than the maximum non-destructive signal power to prevent the receiving end equipment from being damaged. Therefore, the second transmission power can also be updated according to the path elevation angle to ensure the security of communication.

[0060] In some embodiments, updating the second transmit power according to the path elevation angle to obtain the updated second transmit power may include:

[0061] (1) Determine the gain reduction of the transmitting antenna in the horizontal direction and the gain reduction of the receiving antenna in the horizontal direction according to the path elevation angle;

[0062] (2) determining the intermediate transmit power according to the first link loss, the gain reduction in the horizontal direction of the transmitting antenna, the gain reduction in the horizontal direction of the receiving antenna, and the third formula;

[0063] (3) taking the smaller value of the intermediate transmit power and the second transmit power as the updated second transmit power;

[0064] The third formula can be:

[0065] P us2 =L loss -G r +G tθ +G rθ +P max

[0066] Among them, P us2 is the middle transmission power, L loss is the first link loss, G r is the receiving antenna gain, G tθ G is the gain reduction of the transmitting antenna in the horizontal direction. rθ P is the gain reduction of the receiving antenna in the horizontal direction. max The maximum power without damaging the signal.

[0067] In the embodiment of the present invention, the power received by the receiving end should not be greater than the maximum non-destructive signal power, that is, the power P received by the receiving end us2 -L loss +G r -G tθ -G rθ ≤P max Similarly, if the transmitting power is too small, the receiving end may not be able to receive the communication signal. Therefore, the maximum power value that meets the above conditions is selected, that is, P us2 -L loss +G r -G tθ -G rθ =P max , ensuring the communication quality and security. Then the smaller value of the transmission power and the second transmission power is selected as the updated second transmission power, ensuring the safety of communication and preventing the calculation error caused by the change of terrain information, resulting in excessive power and causing failure.

[0068] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0069] Corresponding to the above method embodiment, refer to Figure 2The embodiment of the present invention further provides a power control device for a beyond-horizon wireless communication system, comprising:

[0070] The first communication module 21 is used to determine the unobstructed communication distance between the transmitter and the receiver, and control the communication between the transmitter and the receiver according to the unobstructed communication distance;

[0071] The communication status acquisition module 22 is used to acquire the communication status between the transmitting end and the receiving end;

[0072] The second communication module 23 is used to determine the blocked communication distance and scattering angle between the transmitter and the receiver if the communication status between the transmitter and the receiver is failed, and control the communication between the transmitter and the receiver according to the blocked communication distance and scattering angle.

[0073] In some embodiments, the first communication module 21 may include:

[0074] A first parameter acquisition unit 211 is used to acquire the longitude and latitude of the transmitting end and the longitude and latitude of the receiving end;

[0075] A first distance determination unit 212, configured to determine an unobstructed communication distance according to the longitude and latitude of the transmitting end and the longitude and latitude of the receiving end;

[0076] A first loss calculation unit 213, configured to determine a first link loss of the communication channel according to the unobstructed communication distance;

[0077] The first power control unit 214 is used to determine the first transmission power of the transmitting end according to the first link loss, and control the communication between the transmitting end and the receiving end according to the first transmission power.

[0078] In some embodiments, the second communication module 23 may include:

[0079] The second parameter acquisition unit 231 is used to acquire the longitude and latitude of the transmitting end and the longitude and latitude of the receiving end if the communication status between the transmitting end and the receiving end is failed;

[0080] A profile drawing unit 232 is used to draw an elevation profile according to the longitude and latitude of the transmitting end and the longitude and latitude of the receiving end;

[0081] A second distance determination unit 233, used to determine the blocked communication distance and the scattering angle according to the elevation profile;

[0082] A second loss calculation unit 234, configured to determine a second link loss of the communication channel according to the blocked communication distance and the scattering angle;

[0083] The second power control unit 235 is used to determine the second transmission power of the transmitting end according to the second link loss, and control the communication between the transmitting end and the receiving end according to the second transmission power.

[0084] In some embodiments, the second loss calculation unit 234 may be specifically used to:

[0085] Determine the second link loss according to the blocked communication distance, the scattering angle and the first formula;

[0086] The first formula can be:

[0087] L a =L(50)+Y(q)+L A

[0088] L(50)=30log(f)+30log(1000θ)+10log(d)+L N +L c +F

[0089] L A =A(d c )*B(f)

[0090] Among them, L a is the second link loss; L(50) is the median loss; Y(q) is the fading depth with a probability of (1-q)%; f is the radio frequency, θ is the scattering angle, d is the unobstructed communication distance, L N is the common volume height factor, L c is the dielectric coupling loss, F is the climate calibration factor; L A is d c The function of c is the obstructed communication distance, A() is d c is a function of , and B() is a function of f.

[0091] In some embodiments, the second power control unit 235 may include:

[0092] The power determination subunit 2351 is used to determine the second transmit power according to the second link loss and the second formula;

[0093] The communication subunit 2352 is used to control the communication between the transmitting end and the receiving end according to the second transmission power; the second formula can be:

[0094] P s2 =L a -G r +P rr

[0095] Among them, P s2 is the second transmission power, L a is the second link loss, G r is the receiving antenna gain, P rr is the maximum receivable signal power.

[0096] In some embodiments, the second power control unit 235 may further include:

[0097] The elevation angle determination subunit 2353 is used to determine the elevation angle of the path between the transmitting end and the receiving end according to the elevation map;

[0098] The power updating subunit 2354 is configured to update the second transmit power according to the path elevation angle to obtain an updated second transmit power;

[0099] The communication subunit 2352 is specifically used for:

[0100] The communication between the transmitting end and the receiving end is controlled according to the updated second transmitting power.

[0101] In some embodiments, the power update subunit 2354 may be specifically used to:

[0102] 1. Determine the gain reduction of the transmitting antenna in the horizontal direction and the gain reduction of the receiving antenna in the horizontal direction according to the path elevation angle;

[0103] 2. Determine the intermediate transmit power according to the first link loss, the gain reduction of the transmitting antenna in the horizontal direction, the gain reduction of the receiving antenna in the horizontal direction, and the third formula;

[0104] 3. The smaller value between the intermediate transmit power and the second transmit power is used as the updated second transmit power; the third formula may be:

[0105] P us2 =L loss -G r +G tθ +G rθ +P max

[0106] Among them, P us2 is the middle transmission power, L loss is the first link loss, G r is the receiving antenna gain, G tθ G is the gain reduction of the transmitting antenna in the horizontal direction. rθ P is the gain reduction of the receiving antenna in the horizontal direction. max The maximum power without damaging the signal.

[0107] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the control terminal can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned device can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0108] Figure 3 FIG. 1 is a schematic block diagram of a control terminal provided by an embodiment of the present invention. Figure 3 As shown, the control terminal 4 of this embodiment includes: one or more processors 40, a memory 41, and a computer program 42 stored in the memory 41 and executable on the processor 40. When the processor 40 executes the computer program 42, the steps in the above-mentioned power control method embodiments of the over-the-horizon wireless communication system are implemented, for example Figure 1 Alternatively, when the processor 40 executes the computer program 42, the functions of each module / unit in the power control device of the above-mentioned over-the-horizon wireless communication system are realized, for example Figure 2 The functions of modules 21 to 23 are shown.

[0109] Exemplarily, the computer program 42 may be divided into one or more modules / units, one or more modules / units are stored in the memory 41, and are executed by the processor 40 to complete the present application. One or more modules / units may be a series of computer program instruction segments capable of completing specific functions, and the instruction segments are used to describe the execution process of the computer program 42 in the control terminal 4. For example, the computer program 42 may be divided into a first communication module 21, a communication status acquisition module 22, and a second communication module 23.

[0110] The first communication module 21 is used to determine the unobstructed communication distance between the transmitter and the receiver, and control the communication between the transmitter and the receiver according to the unobstructed communication distance;

[0111] The communication status acquisition module 22 is used to acquire the communication status between the transmitting end and the receiving end;

[0112] The second communication module 23 is used to determine the blocked communication distance and scattering angle between the transmitter and the receiver if the communication status between the transmitter and the receiver is failed, and control the communication between the transmitter and the receiver according to the blocked communication distance and scattering angle.

[0113] Other modules or units are not described in detail here.

[0114] The control terminal 4 includes but is not limited to a processor 40 and a memory 41. Those skilled in the art will appreciate that Figure 3 It is only an example of a control terminal and does not constitute a limitation on the control terminal 4. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the control terminal 4 may also include an input device, an output device, a network access device, a bus, etc.

[0115] The processor 40 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0116] The memory 41 may be an internal storage unit of the control terminal, such as a hard disk or memory of the control terminal. The memory 41 may also be an external storage device of the control terminal, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the control terminal. Furthermore, the memory 41 may also include both an internal storage unit of the control terminal and an external storage device. The memory 41 is used to store the computer program 42 and other programs and data required by the control terminal. The memory 41 may also be used to temporarily store data that has been output or is to be output.

[0117] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0118] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0119] In the embodiments provided in the present application, it should be understood that the disclosed control terminal and method can be implemented in other ways. For example, the control terminal embodiments described above are only schematic, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0120] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0121] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0122] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electric carrier signals and telecommunication signals.

[0123] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A power control method for a beyond-line-of-sight wireless communication system, characterized in that: include: Determining an unobstructed communication distance between a transmitting end and a receiving end, and controlling communication between the transmitting end and the receiving end according to the unobstructed communication distance; Acquiring a communication status between the transmitting end and the receiving end; If the communication state between the transmitting end and the receiving end is failed, determining the blocked communication distance and the scattering angle between the transmitting end and the receiving end, and controlling the communication between the transmitting end and the receiving end according to the blocked communication distance and the scattering angle; The determining of the unobstructed communication distance between the transmitting end and the receiving end, and controlling the communication between the transmitting end and the receiving end according to the unobstructed communication distance, comprises: Obtaining the longitude and latitude of the transmitting end and the longitude and latitude of the receiving end; Determining the unobstructed communication distance according to the longitude and latitude of the transmitting end and the longitude and latitude of the receiving end; determining a first link loss of a communication channel according to the unobstructed communication distance; determining a first transmission power of the transmitting end according to the first link loss, and controlling communication between the transmitting end and the receiving end according to the first transmission power; If the communication state between the transmitting end and the receiving end is failed, determining the blocked communication distance and the scattering angle between the transmitting end and the receiving end, and controlling the communication between the transmitting end and the receiving end according to the blocked communication distance and the scattering angle, including: If the communication status between the transmitting end and the receiving end is failed, obtaining the longitude and latitude of the transmitting end and the longitude and latitude of the receiving end; Draw an elevation profile according to the longitude and latitude of the transmitting end and the longitude and latitude of the receiving end; Determining the blocked communication distance and the scattering angle according to the elevation profile; Determine a second link loss of the communication channel according to the blocked communication distance and the scattering angle; determining a second transmission power of the transmitting end according to the second link loss, and controlling communication between the transmitting end and the receiving end according to the second transmission power; The determining the second link loss of the communication channel according to the blocked communication distance and the scattering angle includes: Determining the second link loss according to the blocked communication distance, the scattering angle and the first formula; The first formula is: in, is the second link loss; is the median loss, Probability of occurrence The depth of the decay; is the radio wave frequency, is the scattering angle, is the unobstructed communication distance, is the common volume height factor, is the dielectric coupling loss, is the climate calibration factor; for The function of is the obstructed communication distance, for The function of for Function of The determining the second transmission power of the transmitting end according to the second link loss, and controlling the communication between the transmitting end and the receiving end according to the second transmission power, comprises: Determining the second transmit power according to the second link loss and a second formula; controlling communication between the transmitting end and the receiving end according to the second transmitting power; The second formula is: in, is the second transmission power, is the second link loss, is the receiving antenna gain, is the maximum receivable signal power; After determining the second transmit power according to the second link loss and the second formula, the method further includes: Determining a path elevation angle between the transmitting end and the receiving end according to the elevation profile; Updating the second transmit power according to the path elevation angle to obtain an updated second transmit power; The controlling the communication between the transmitting end and the receiving end according to the second transmission power includes: Controlling communication between the transmitting end and the receiving end according to the updated second transmitting power; The updating the second transmit power according to the path elevation angle to obtain an updated second transmit power includes: Determining a gain reduction in a horizontal direction of a transmitting antenna and a gain reduction in a horizontal direction of a receiving antenna according to the path elevation angle; determining an intermediate transmit power according to the first link loss, the gain reduction of the transmitting antenna in the horizontal direction, the gain reduction of the receiving antenna in the horizontal direction, and a third formula; Using the smaller value between the intermediate transmit power and the second transmit power as the updated second transmit power; The third formula is: in, is the intermediate transmission power, is the first link loss, is the receiving antenna gain, is the gain reduction of the transmitting antenna in the horizontal direction, is the gain reduction of the receiving antenna in the horizontal direction, The maximum power without damaging the signal.

2. A power control device for a beyond-line-of-sight wireless communication system, characterized in that: Used to implement the power control method of the over-the-horizon wireless communication system according to claim 1; the above-mentioned device comprises: A first communication module, used to determine an unobstructed communication distance between a transmitting end and a receiving end, and control the communication between the transmitting end and the receiving end according to the unobstructed communication distance; A communication status acquisition module, used to acquire the communication status between the transmitting end and the receiving end; The second communication module is used to determine the blocked communication distance and scattering angle between the transmitting end and the receiving end if the communication status between the transmitting end and the receiving end is failed, and control the communication between the transmitting end and the receiving end according to the blocked communication distance and the scattering angle.

3. A control terminal, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the power control method for the beyond-line-of-sight wireless communication system as claimed in claim 1 is implemented.

4. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the power control method for the over-the-horizon wireless communication system as claimed in claim 1 is implemented.

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