Wireless communication system, method and equipment assisted by rotatable antenna, and medium

Abstract

The invention discloses a wireless communication system assisted by a rotatable antenna, a method, equipment and a medium. The system comprises a radio frequency transceiving system, a rotatable antenna system and a target positioning system, the target positioning system comprises an image acquisition unit and a target positioning unit; the image acquisition unit is mounted on a motor of the rotatable antenna system and is used for acquiring an environment image; the target positioning unit is used for extracting coordinate information of a target user according to the obtained environment image; the rotatable antenna system comprises a rotatable antenna unit and a main control unit; the rotatable antenna unit is used for receiving and transmitting signals; and the main control unit is used for controlling the rotation angle of the rotatable antenna unit according to the coordinate information extracted by the target positioning unit so as to realize radio frequency signal receiving and transmitting work of the radio frequency receiving and transmitting system. The direction of the rotatable antenna unit is dynamically adjusted by using the position information of the target user, so that the beam direction of the antenna is always aligned with the target user, and the communication quality and the signal strength are improved.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication, and in particular to a wireless communication system, method, device and medium assisted by a rotatable antenna. Background Art

[0002] In traditional wireless communication systems, a large number of antennas and base stations are usually used to increase the array gain and spatial multiplexing gain to improve the signal quality of the user terminal. However, the increase in the number of antennas requires more space, higher energy consumption and hardware costs. Since the position and direction of the antennas are fixed, the increase in the number of antennas will make the mutual coupling effect and interference problems between the antennas more serious, and the spatial degrees of freedom cannot be fully exploited. To solve this problem, some new antenna technologies have been proposed, mainly including the following types:

[0003] Fluid antenna / movable antenna: It consists of a software-controllable fluid, conductive or dielectric structure, and can reconfigure characteristics such as gain, radiation pattern, and operating frequency by changing its shape and position. Although it has flexibility, the change of its position requires a large moving space. The mechanical motion type fluid antenna adjusts the antenna position through physical displacement, and the mechanical system is complex, which is easy to increase the device volume and affect the miniaturization design. In addition, the response speed of mechanical drive is slow, and it is difficult to meet the requirements of high-speed application scenarios. Although the non-mechanical drive structure simplifies the design, its adjustable range is small, and the frequency and bandwidth may be limited, resulting in higher maintenance costs and design difficulties.

[0004] Six-dimensional movable antenna: An antenna that allows flexible adjustment of three-dimensional position and three-dimensional rotation. Although the six-dimensional movable antenna can achieve full coverage of the range and make full use of the spatial degrees of freedom, there are more complex angle / position optimization problems, and its control structure is more complex than that of the movable antenna / fluid antenna, and the manufacturing cost is higher.

[0005] In summary, the existing antenna technology solutions all have corresponding problems, and a perfect technical solution is still needed. Summary of the Invention

[0006] To solve at least one of the technical problems existing in the prior art to a certain extent, an object of the present invention is to provide a wireless communication system, method, device and medium assisted by a rotatable antenna.

[0007] The first technical solution adopted by the present invention is:

[0008] A wireless communication system assisted by a rotatable antenna includes a radio frequency transceiver system, a rotatable antenna system and a target positioning system;

[0009] The target positioning system includes an image acquisition unit and a target positioning unit; the image acquisition unit is installed on the motor of the rotatable antenna system and is used to acquire environmental images; the target positioning unit is used to extract the coordinate information of the target user according to the obtained environmental images.

[0010] The rotatable antenna system includes a rotatable antenna unit and a main control unit; the rotatable antenna unit is used for signal transceiver work, and the number is N, where N is a positive integer; the main control unit is used to control the rotation angle of the rotatable antenna unit according to the coordinate information extracted by the target positioning unit, so as to realize the radio frequency signal transceiver work of the radio frequency transceiver system.

[0011] The rotatable antenna unit transmits and receives radio frequency transceiver signals through the main control unit to the radio frequency transceiver system.

[0012] Further, the rotatable antenna unit includes two motors, a motor control module and a directional antenna unit. The directional antenna unit is responsible for transmitting and receiving radio frequency signals. The motors are connected to and drive the directional antenna unit to perform horizontal or vertical rotational movements. The motor control module is used to control the movement of the motors.

[0013] Further, the motor control module includes a motor drive circuit and a control unit. The motor drive circuit is connected to and drives the motors. The control unit is connected to the main control unit and the motor drive circuit, and controls the motor drive circuit to drive the motors to perform specific rotational actions according to the signals of the main control unit.

[0014] Further, the target positioning unit includes two convolutional neural networks. The first convolutional neural network is used to extract the features of the image, detect the target position and category in the image, so as to extract the target label position information; the second convolutional neural network is used to extract the target feature vector obtained by the first convolutional neural network, match the detected target with the existing trajectory, and perform data association in target tracking.

[0015] The second technical solution adopted by the present invention is:

[0016] A motor control method, applied to the wireless communication system assisted by the rotatable antenna as described above, includes the following steps:

[0017] The rotatable antenna assisted communication system is started and run.

[0018] The main control unit sends a reset signal to the motor control module.

[0019] The motor drives the image acquisition unit to rotate 360° periodically, and the target positioning unit judges whether there is a target user in the environment.

[0020] If the judgment is negative, that is, there is no target user, the motor continues to rotate periodically.

[0021] If the judgment is yes, that is, there is a target user, the motor stops rotating periodically, and the motor drives the antenna to rotate to the angle where the target is located, and its rotation angle is dynamically adjusted according to the movement of the target user.

[0022] The third technical solution adopted by the present invention is:

[0023] A main control method is applied to the wireless communication system assisted by the rotatable antenna as described above, and includes the following steps:

[0024] The main control unit sends a reset signal to the motor control module and turns on the image acquisition unit;

[0025] The main control unit outputs a pulse signal to the motor control module to control the image acquisition unit to rotate 360° regularly, and the target positioning unit judges whether there is a target user in the environment;

[0026] If the judgment is no, that is, there is no target user, the main control unit periodically outputs a pulse signal to the motor control module to control the image acquisition unit to continue rotating;

[0027] If the judgment is yes, that is, there is a target user, the target positioning unit outputs the position coordinate information of the target user to the main control unit;

[0028] The main control unit obtains the corresponding azimuth angle according to the position coordinate information of the target user and elevation angle θ;

[0029] The main control unit outputs the corresponding angle information to the motor control module, and rotates the antenna clockwise to the user's corresponding azimuth angle and elevation angle θ, and detects the intensity value of the signal.

[0030] Further, the azimuth angle and elevation angle θ are obtained by the following formula:

[0031]

[0032] where, (x 1 , y 1 ), (x 2 , y 2 ) respectively represent the coordinates of the upper left corner and the lower right corner of the target bounding box output by the target positioning unit; x max , y max are respectively the length and width of the picture output by the image acquisition module; 135°, 60° respectively represent the horizontal and vertical visual ranges of the image acquisition module.

[0033] The fourth technical solution adopted by the present invention is:

[0034] A target tracking method is applied to the rotatable antenna-assisted wireless communication system as described above, and includes the following steps:

[0035] Input the target tag information into the pre-trained first convolutional neural network to obtain the current position information of the target;

[0036] Input the output result of the first convolutional neural network into the second convolutional neural network to obtain the appearance features of the target;

[0037] Use the state prediction network to predict the position of the target in the next frame;

[0038] Match the detection result in the current frame with the target according to the predicted position and appearance features;

[0039] Update the trajectory of the target according to the matching result, generate the motion trajectory of the target in consecutive frames, so as to obtain the accurate position information of the moving target.

[0040] The fifth technical solution adopted by the present invention is:

[0041] An electronic device, the electronic device includes a processor and a memory, and at least one instruction, at least one program, a code set or an instruction set is stored in the memory, and the at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by the processor to implement the method as described above.

[0042] The sixth technical solution adopted by the present invention is:

[0043] A computer-readable storage medium, at least one instruction, at least one program, a code set or an instruction set is stored in the storage medium, and the at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by a processor to implement the method as described above.

[0044] The seventh technical solution adopted by the present invention is:

[0045] A computer program product or a computer program, the computer program product or the computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the computer device can read the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the method described above.

[0046] The beneficial effect of the present invention is: The present invention uses the position information of the target user to dynamically adjust the direction of the rotatable antenna unit to ensure that the beam direction of the antenna is always aligned with the target user, so as to improve the communication quality and signal strength.

[0047] The control method of the present invention has wide generality and high adaptability, and can be flexibly adjusted and combined according to different devices, different environments and different user requirements to achieve the best control effect.

[0048] The present invention utilizes the directivity of a directional antenna, installs it on a motor, combines with a motor control module to form a rotatable antenna unit, obtains the position information of a target user by using a target positioning system, and ensures that the rotatable antenna unit always aims at the target user through a control algorithm, so as to ensure that the received signal is in an optimal state. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following introduces the drawings of the related technical solutions in the embodiments of the present invention or the prior art. It should be understood that the drawings introduced below only conveniently and clearly illustrate some embodiments of the technical solutions in the present invention. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0050] Figure 1 It is a schematic diagram of the composition of the rotatable antenna system in the embodiment of the present invention.

[0051] Figure 2 It is a schematic diagram of the composition of the target positioning system in the embodiment of the present invention.

[0052] Figure 3 It is a schematic diagram of the composition of the relationship between each module in the embodiment of the present invention.

[0053] Figure 4 It is a working flowchart of the rotatable antenna assisted communication system in the embodiment of the present invention.

[0054] Figure 5 It is a curve graph showing the relationship between the received power and the target position of a moving target under different antenna systems in the embodiment of the present invention.

[0055] Figure 6 It is a schematic diagram of the composition of the signal processing device in the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0056] The embodiments of the present invention are described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention, and should not be construed as a limitation of the present invention. For the step numbers in the following embodiments, they are only set for the convenience of elaboration and explanation, and no limitation is imposed on the order between the steps. The execution order of each step in the embodiments can be adaptively adjusted according to the understanding of those skilled in the art.

[0057] In the description of the present invention, it should be understood that with respect to the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0058] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If the first and second are described only for the purpose of distinguishing technical features, they should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0059] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present invention in combination with the specific content of the technical solution.

[0060] To illustrate the technical progressiveness of the method of the present invention, the rotatable antenna-assisted communication system proposed by the present invention is tested in an actual environment and compared with a fixed antenna system. Among them, the fixed antenna system refers to a system with a fixed antenna position and a fixed orientation. In this test, the number of rotatable antennas is 1, and the number of target users is 1.

[0061] In traditional wireless communication systems, usually a large number of antennas and base stations are added to increase the array gain and spatial multiplexing gain to improve the signal quality at the user end. However, the increase in the number of antennas requires more space, higher energy consumption, and hardware costs. Since the position and direction of the antennas are fixed, the increase in the number of antennas will make the mutual coupling effect and interference problems between the antennas more serious, and the spatial degrees of freedom cannot be fully exploited. To solve this problem, some new antenna technologies have been proposed, mainly including the following types:

[0062] Fluid antenna / movable antenna: It is composed of a software-controllable fluid, conductive or dielectric structure, and can reconfigure characteristics such as gain, radiation pattern, and operating frequency by changing its shape and position. Although it has flexibility, the change of its position requires a large moving space. The mechanical motion type fluid antenna adjusts the antenna position through physical displacement, and the mechanical system is complex, which is easy to increase the device volume and affect the miniaturization design. In addition, the response speed of mechanical drive is slow, and it is difficult to meet the requirements of high-speed application scenarios. Although the non-mechanical drive structure simplifies the design, its adjustable range is small, and the frequency and bandwidth may be limited, resulting in higher maintenance costs and design difficulties.

[0063] Six - dimensional movable antenna: An antenna that allows flexible adjustment of three - dimensional position and three - dimensional rotation. Although the six - dimensional movable antenna can achieve full coverage of the range and make full use of the spatial degrees of freedom, there are relatively complex angle / position optimization problems, and its control structure is more complex than that of movable antennas / fluid antennas, and the manufacturing cost is higher.

[0064] Rotatable antenna: It can flexibly adjust the three - dimensional direction of the antenna beam through mechanical rotation or electrical rotation while keeping its position unchanged. Due to its fixed position, the rotatable antenna can significantly reduce the required cost and space while improving communication performance.

[0065] Based on this, the present invention proposes a wireless communication system assisted by a rotatable antenna. Through the target positioning system and the rotatable antenna system, the direction of the antenna can be dynamically adjusted according to the position of the target, ensuring that the beam direction of the antenna is always aligned with the target user to improve communication quality and signal strength.

[0066] Please refer to Figure 1 Schematic diagram of the composition of the rotatable antenna system of the present invention. The rotatable antenna system 10 includes N rotatable antenna units 105 and a main control unit 101, where N is a positive integer. The rotatable antenna unit includes a motor 102, a motor control module 103, and a directional antenna unit 104. The directional antenna unit 104 is responsible for transmitting and receiving radio frequency signals. The motor 102 is connected to the directional antenna unit 104 to drive the directional antenna unit 104 to perform rotational motion. The motor control module 103 is responsible for receiving the rotation angle signal and controlling the motor 102 to perform horizontal / vertical motion. The main control unit is responsible for determining the rotation angle of the rotatable antenna unit to realize the radio frequency signal transceiver operation of the radio frequency transceiver system 20.

[0067] Refer to Figure 2 Schematic diagram of the composition of the target positioning system of the present invention. The target positioning system 30 further includes an image acquisition unit 301 and a target positioning unit 302. The image acquisition unit 301 is installed on the rotatable antenna system 10 and uses a high - resolution industrial camera to photograph the surrounding environment to obtain clear and accurate environmental images. The target positioning unit 302 is responsible for real - time processing of the obtained environmental images and extracting the coordinate information of the target user. Further, the target positioning unit includes two convolutional neural networks. The first convolutional neural network is used to extract the features of the image, detect the target position and category in the image, so as to extract the target label position information. The second convolutional neural network is used to extract the target feature vector obtained by the first convolutional neural network, match the detected target with the existing trajectory, and perform data association in target tracking.

[0068] Refer to Figure 3Schematic diagram of the relationship composition of each module of the present invention. The main control unit 101 is simultaneously connected to the rotating antenna unit 105, the target positioning unit 302, and the radio frequency transceiver system 20. The main control unit 101 determines the rotation angle of the rotating antenna unit 105. The target positioning unit 302 outputs the position information of the target to the main control unit 101. At the same time, the working process of the radio frequency transceiver system 20 runs on the main control unit 101.

[0069] Reference Figure 4 Working flowchart of the rotatable antenna assisted communication system. The specific implementation details include the following steps:

[0070] Step S101, the system is powered on and starts running;

[0071] Step S102, the main control unit sends a reset signal to the motor control module;

[0072] Step S103, input the target label information into the pre-trained first convolutional neural network;

[0073] Among them, the target label information is the category of the target label. By setting the category of the target label, the target to be recognized can be determined. The structure of the first convolutional neural network is not limited. Commonly used architectures such as CSPDarknet and ResNet can be used. It is possible to select a number of convolutional neural networks to extract multi-scale features of the target, and then fuse the extracted features to integrate the feature information of different signals. Among them, the fusion strategy is not limited. It can be achieved through introducing an attention mechanism, splicing, joint learning, etc. to obtain the positioning information of the target.

[0074] In one embodiment, the first convolutional neural network adopts the CSPDarknet53 architecture, extracts multi-scale features through the C2f module and the Bottleneck Block, introduces an attention mechanism and a path aggregation network for feature fusion, and uses the bottom-up and top-down paths to enhance the interaction of features at different levels; the fused feature vector is sequentially passed through the fully connected layer and the activation function to obtain the position information of the target. The choice of the activation function is not limited, and ReLU (Rectified Linear Unit) etc. can be selected.

[0075] Step S104, the main control unit outputs a pulse signal to the motor control module to control the image acquisition unit to rotate 360°;

[0076] Among them, the visual range and resolution of the image acquisition unit are not limited. An image acquisition module with a larger coverage range and higher resolution can be used. The larger the visual range of the image acquisition unit, the faster the response speed of the system when the target appears.

[0077] In one embodiment, an image acquisition module with a visible range of 135° horizontally and 60° vertically and a resolution of 1920×1080 is adopted. The visible range of the image acquisition module affects the angle of rotation of the motor-controlled antenna.

[0078] Step S105, the target positioning unit determines whether there is a target user in the environment;

[0079] Step S106, if the judgment result is negative, that is, there is no target user, the main control unit periodically outputs a pulse signal to the motor control module to control the periodic rotation of the image acquisition unit.

[0080] Among them, the period of the motor rotation is not restricted and can be set according to the actual situation.

[0081] In one embodiment, a hardware timer is initialized in the main control unit and its period is set to 100000 milliseconds. Further, an activation function is written, which is responsible for sending a control signal to the servo to adjust its angle. The timer is started so that the activation function is triggered every 100 seconds. In this way, the servo will receive a control signal every 100 seconds, thus realizing periodic rotation.

[0082] Step S107, if the judgment result is positive, that is, there is a target user, the target positioning unit outputs the position coordinate information of the target user to the main control unit.

[0083] Step S108, the main control unit processes the position coordinate information of the target user to obtain the corresponding azimuth angle and pitch angle θ;

[0084] Among them, the azimuth angle pointed by the rotatable antenna unit is determined by the coordinate information of the target, the visible range of the image acquisition module, and the size of the picture output by the image acquisition module.

[0085] In one embodiment, the target bounding box output by the target positioning unit is (x 1 , x 2 , y 1 , y 2 ), (x 1 , y 1 ), (x 2 , y 2 ) respectively represent the coordinates of the upper left and lower right corners of the bounding box. x max , y max are respectively the length and width of the picture output by the image acquisition module. 135° and 60° are respectively the horizontal and vertical visible ranges of the image acquisition module. Then the azimuth angle and pitch angle θ of the rotatable antenna unit are respectively:

[0086]

[0087] According to the target bounding box information output by the image positioning module, the steps of channel estimation and target positioning can be simplified, and the angular information of the target can be obtained quickly and accurately, so as to obtain the rotation angle of the rotatable antenna.

[0088] Step S109, the main control unit outputs the corresponding angle information to the motor control module, and rotates the antenna clockwise to the user's corresponding azimuth and elevation angle θ, and detect the signal strength value.

[0089] Step S110, input the output result of the first convolutional neural network into the second convolutional neural network to obtain the appearance features of the target;

[0090] Among them, the structure of the second convolutional neural network is not limited, and common architectures such as ResNet and MobileNet can be used. Several convolutional neural networks can be selected to extract the appearance features of the target.

[0091] In one embodiment, the second convolutional neural network adopts a simplified convolutional neural network structure based on ResNet, and generates a 128-dimensional feature vector for target matching through a convolutional layer, a residual block, a global average pooling layer, and a fully connected layer to represent the appearance features of the target.

[0092] Step S111, use the state prediction method to predict the position of the target in the next frame;

[0093] Among them, the method of state prediction is not limited, and prediction methods such as Kalman filtering and particle filtering can be used to predict the position of the target in the next frame.

[0094] In one embodiment, according to the historical position and speed information of the target, the Kalman filter is used to predict the position of the target in the next frame.

[0095] Step S112, according to the predicted position and appearance features, match the detection result in the current frame with the target;

[0096] Among them, the matching method and order are not limited, and methods such as the Hungarian algorithm, cascade matching, and dynamic template matching can be used to achieve more accurate matching.

[0097] In one embodiment, first, the similarity between two bounding boxes is measured using IOU (Intersection over Union), and a cost matrix is constructed. Then, the Hungarian algorithm is used to optimize the matching of the cost matrix. The Hungarian algorithm can find the optimal matching scheme to ensure a one-to-one matching between each detection box and prediction box. Then, the unmatched detection boxes and prediction boxes are cascaded for matching. Finally, feature similarity matching is used to match the detection boxes and prediction boxes with high feature similarity.

[0098] Step S113, determine whether the target is moving;

[0099] Step S114, if the target is not moving, the antenna rotation angle remains unchanged and always points to the user;

[0100] Step S115, if the target is moving, update the trajectory of the target according to the matching result to obtain the accurate position information of the moving target, and output the position information to the main control unit.

[0101] Step S116, the main control unit processes the updated position coordinate information of the target user to obtain the corresponding azimuth angle and elevation angle θ.

[0102] Step S117, the main control unit outputs the corresponding angle information to the motor control module, rotates the antenna to the corresponding azimuth angle of the user and elevation angle θ, and detects the signal strength value.

[0103] Reference Figure 5 is the curve graph of the relationship between the received power and the target position in different antenna systems for the mobile target provided by the embodiment of the present application. It can be Figure 5 concluded that compared with the fixed antenna system, the received signal power of the user obtained in the rotatable antenna-assisted communication system proposed in the embodiment of the present application is significantly more stable, and the signal quality is significantly higher than that of the fixed antenna system. This verifies that when the rotatable antenna-assisted communication system proposed in the embodiment of the present application is used, the communication quality and its stability can be effectively improved.

[0104] In addition, the embodiment of the present application also provides a signal processing device, including:

[0105] One or more processors;

[0106] At least one memory;

[0107] At least two interfaces and

[0108] One or more computer programs;

[0109] Among them, the one or more computer programs are stored in the memory and configured to be executed by the one or more processors. The electronic device can be any intelligent terminal including a tablet computer, a personal digital assistant (PDA), an in-vehicle computer, etc.

[0110] Reference Figure 6 FIG. shows the hardware structure of the electronic device according to an embodiment of the present application. The electronic device includes:

[0111] A processor 901, which can be implemented by using a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, etc., and is used to execute relevant programs to implement the technical solutions provided by the embodiments of the present application;

[0112] A memory 902, which can be implemented in the form of a ROM (Read Only Memory), a static storage device, a dynamic storage device, or a RAM (Random Access Memory), etc. The memory 902 can store an operating system and other application programs. When implementing the technical solutions provided by the embodiments of this specification through software or firmware, the relevant program codes are stored in the memory 902 and called by the processor 901 to execute the intelligent reflecting surface design method of the embodiments of the present application;

[0113] An input / output interface 903, which is used to implement information input and output;

[0114] A communication interface 904, which is used to implement communication interaction between this device and other devices, and can implement communication through a wired method (such as USB, network cable, etc.) or through a wireless method (such as a mobile network, WIFI, Bluetooth, etc.); and

[0115] A bus 905, which transmits information between various components of the device (such as the processor 901, the memory 902, the input / output interface 903, and the communication interface 904);

[0116] Among them, the processor 901, the memory 902, the input / output interface 903, and the communication interface 904 are communicatively connected to each other inside the device through the bus 905.

[0117] An embodiment of the present application further provides a storage medium, which is a storage medium that stores a computer program. When the computer program is executed by a processor, the above-mentioned intelligent reflecting surface design method is implemented.

[0118] As a non-transitory storage medium, the memory can be used to store non-transitory software programs and non-transitory computer-executable programs. In addition, the memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state storage devices. In some embodiments, the memory optionally includes a memory remotely disposed relative to the processor, and these remote memories can be connected to the processor through a network. Examples of the above networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0119] The control method of the present invention has wide generality and high adaptability, and can be flexibly adjusted and combined according to different devices, different environments, and different user requirements to achieve the best control effect.

[0120] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0121] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those of ordinary skill in the art to understand the content of the present invention and implement it accordingly, and cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the essence of the content of the present invention should be covered by the protection scope of the present invention.

Claims

1. A wireless communication system assisted by a rotatable antenna, characterized in that: Includes radio frequency transceiver system, rotatable antenna system and target positioning system; The target positioning system includes an image acquisition unit and a target positioning unit; the image acquisition unit is installed on the motor of the rotatable antenna system and is used to acquire an environmental image; the target positioning unit is used to extract the coordinate information of the target user according to the acquired environmental image; The rotatable antenna system includes a rotatable antenna unit and a main control unit; the rotatable antenna unit is used for signal transmission and reception; the main control unit is used to control the rotation angle of the rotatable antenna unit according to the coordinate information extracted by the target positioning unit to realize the radio frequency signal transmission and reception of the radio frequency transceiver system.

2. A wireless communication system assisted by a rotatable antenna according to claim 1, characterized in that: The rotatable antenna unit includes two motors, a motor control module and a directional antenna unit. The directional antenna unit is responsible for sending and receiving radio frequency signals. The motor is connected to and drives the directional antenna unit to perform horizontal or vertical rotation movement. The motor control module is used to control the motor movement.

3. A wireless communication system assisted by a rotatable antenna according to claim 2, characterized in that: The motor control module includes a motor drive circuit and a control unit. The motor drive circuit is connected to and drives the motor. The control unit is connected to the main control unit and the motor drive circuit. The motor drive circuit is controlled according to the signal of the main control unit to drive the motor to perform a specific rotation action.

4. A wireless communication system assisted by a rotatable antenna according to claim 1, characterized in that: The target positioning unit includes two convolutional neural networks. The first convolutional neural network is used to extract image features, detect the target position and category in the image, and thus extract the target label position information; the second convolutional neural network is used to extract the target feature vector obtained using the first convolutional neural network, match the detected target with the existing trajectory, and perform data association in target tracking.

5. A motor control method, applied to the wireless communication system assisted by a rotatable antenna as claimed in claim 2, characterized in that: The following steps are involved: Rotating antenna to assist communication system in starting operation; The main control unit sends a reset signal to the motor control module; The motor drives the image acquisition unit to rotate periodically, and the target positioning unit determines whether there is a target user in the environment; If the judgment is no, that is, there is no target user, the motor continues to rotate periodically; If the judgment is yes, that is, there is a target user, the motor stops periodically rotating, and the motor drives the antenna to rotate to the angle where the target is located, and its rotation angle is dynamically adjusted according to the movement of the target user.

6. A main control method, applied to the wireless communication system assisted by a rotatable antenna as claimed in claim 2, characterized in that: The following steps are involved: The main control unit sends a reset signal to the motor control module and turns on the image acquisition unit; The main control unit outputs a pulse signal to the motor control module to control the image acquisition unit to rotate regularly, and the target positioning unit determines whether there is a target user in the environment; If the judgment is no, that is, there is no target user, the main control unit periodically outputs a pulse signal to the motor control module to control the image acquisition unit to continue rotating; If the judgment is yes, that is, the target user exists, the target positioning unit outputs the position coordinate information of the target user to the main control unit; The main control unit obtains the corresponding azimuth according to the location coordinate information of the target user and pitch angle θ; The main control unit outputs the corresponding angle information to the motor control module, and rotates the antenna clockwise to the user's corresponding azimuth angle. and pitch angle θ, and detect the signal strength value.

7. A master control method according to claim 6, characterized in that: The azimuth The pitch angle θ is calculated by the following formula: Among them, (x1, y1) and (x2, y2) represent the coordinates of the upper left corner and lower right corner of the target bounding box output by the target positioning unit respectively; x max ,y max They are the length and width of the image output by the image acquisition module; 135° and 60° represent the horizontal and vertical visual ranges of the image acquisition module respectively.

8. A target tracking method, applied to the wireless communication system assisted by a rotatable antenna as claimed in claim 4, characterized in that: The following steps are involved: Input the target label information into the pre-trained first convolutional neural network to obtain the current position information of the target; The output result of the first convolutional neural network is input into the second convolutional neural network to obtain the appearance features of the target; Use the state prediction network to predict the location of the target in the next frame; Match the detection result in the current frame with the target based on the predicted position and appearance features; The target's trajectory is updated according to the matching results, and the target's motion trajectory in consecutive frames is generated, thereby obtaining the accurate position information of the moving target.

9. An electronic device, characterized in that: The electronic device includes a processor and a memory, wherein the memory stores at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by the processor to implement the method according to any one of claims 5 to 8.

10. A computer-readable storage medium, characterized in that: The storage medium stores at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by the processor to implement the method according to any one of claims 5 to 8.

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