A transmissive and reflective integrated active metasurface system and method

Abstract

The application relates to a transmission-reflection integrated active metasurface system and method, comprising a plurality of antenna array unit, the antenna array unit comprises a signal source facing antenna array, a transceiving amplification module, a reflecting surface antenna array and a transmission surface antenna array, the radio frequency signal end of the signal source facing antenna array is electrically connected with the first radio frequency end of the transceiving amplification module, the radio frequency signal ends of the reflecting surface antenna array and the transmission surface antenna array are electrically connected with the second radio frequency end of the transceiving amplification module; all the signal source facing antenna arrays form a signal source facing antenna array, all the reflecting surface antenna arrays form a reflecting surface antenna array, and all the transmission surface antenna arrays form a transmission surface antenna array. The application realizes the active amplification function by arranging the transceiving amplification module. Compared with the passive metasurface system, the active metasurface system can realize signal gain, so that a larger coverage distance and a better signal-to-noise ratio are obtained under the same number of array units.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and more specifically to a transmission-reflection integrated active metasurface system and method. Background Technology

[0002] Reconfigurable Intelligent Surfaces (RIS), an important branch of metamaterials, are composed of a large number of subwavelength electromagnetic units. By applying control signals to the tunable elements on the electromagnetic units, the amplitude, phase, polarization, and frequency of spatial electromagnetic waves can be dynamically adjusted, thereby transforming the wireless propagation environment from passive adaptation to active control, and constructing an intelligent wireless environment.

[0003] In recent years, different types of smart metasurfaces have been introduced, but most existing products are passive reflective surfaces, passive transmissive surfaces, or passive transmissive-reflective surfaces, which have the following prominent problems: First, the gain is insufficient. Passive metasurfaces do not have signal amplification capabilities. To increase the gain, the number of elements must be increased. However, increasing the gain by 3dB requires doubling the number of elements, resulting in a significant increase in cost and low cost-effectiveness.

[0004] Second, they have poor adaptability to application scenarios. Most products can only work in either reflective or transmissive mode and cannot switch flexibly according to the actual deployment environment, which limits their applicability in complex wireless environments. Summary of the Invention

[0005] Based on the above description, the present invention provides an integrated transmission and reflection active metasurface system and method, which aims to solve the problems of insufficient gain and poor scene adaptability of existing active metasurface systems.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: Firstly, a transmissive and reflective integrated active metasurface system includes: Multiple antenna array elements, each antenna array element including a source-facing antenna array, a transceiver amplifier module, a reflector antenna array, and a transmissive antenna array. The radio frequency signal terminal of the source-facing antenna array is electrically connected to the first radio frequency terminal of the transceiver amplifier module, and the radio frequency signal terminals of the reflector antenna array and the transmissive antenna array are both electrically connected to the second radio frequency terminal of the transceiver amplifier module. All of the source-facing antenna elements constitute a source-facing antenna array, all of the reflector antenna elements constitute a reflector antenna array, and all of the transmission antenna elements constitute a transmission antenna array.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, it also includes a main control module. The antenna array sub-unit includes a mode switching module. The controlled terminal of the mode switching module is electrically connected to the first control terminal of the main control module. The first terminal of the mode switching module is electrically connected to the second radio frequency terminal of the transceiver amplifier module. The second terminal of the mode switching module is electrically connected to the radio frequency signal terminal of the reflector antenna array. The third terminal of the mode switching module is electrically connected to the radio frequency signal terminal of the transmissive antenna array.

[0009] Furthermore, it also includes a synchronization module. The antenna array subunit further includes a first channel switching module and a second channel switching module. The controlled terminals of the first channel switching module and the second channel switching module are both electrically connected to the control terminal of the synchronization module. The first terminal of the first channel switching module is electrically connected to the radio frequency signal terminal of the antenna array facing the signal source, and the second terminal of the first channel switching module is electrically connected to the first radio frequency terminal of the transceiver amplifier module. The first terminal of the second channel switching module is electrically connected to the second radio frequency terminal of the transceiver amplifier module, and the second terminal of the second channel switching module is electrically connected to the first terminal of the mode switching module.

[0010] Furthermore, the antenna array subunit also includes a first phase shifting module and a second phase shifting module. The controlled terminals of the first phase shifting module and the second phase shifting module are both electrically connected to the second control terminal of the main control module. The first terminal of the first phase shifting module is electrically connected to the radio frequency signal terminal facing the source antenna array. The second terminal of the first phase shifting module is electrically connected to the first terminal of the first channel switching module. The first terminal of the second phase shifting module is electrically connected to the second terminal of the second channel switching module. The second terminal of the second phase shifting module is electrically connected to the first terminal of the mode switching module.

[0011] Furthermore, the mode switching module, the first channel switching module, and the second channel switching module are switches.

[0012] Furthermore, the first phase-shifting module and the second phase-shifting module are PIN diodes or radio frequency switches.

[0013] Furthermore, the first phase-shifting module and the second phase-shifting module each include a varactor diode and an inductor, and the controlled terminal of the varactor diode is electrically connected to the second control terminal of the main control module.

[0014] In a second aspect, a beam control method for a transmissive-reflective integrated active metasurface is provided, characterized in that the method is executed by a main control module according to the first aspect: Load the device system configuration table; the device system configuration table includes at least the device frequency band, operating mode, source-oriented antenna array codebook configuration, reflector antenna array codebook configuration, and transmissive antenna array codebook configuration. According to the source-oriented antenna array codebook configuration, the beam codebook of the source-oriented antenna array is adjusted to the maximum receiving range, and the synchronization module is triggered to search multiple first regions in the frequency band to obtain the broadcast information and signal quality indicators of each first region. Based on the signal quality index, a second region is selected from the plurality of first regions, and analysis is performed to obtain the optimal codebook configuration for the source-oriented antenna array; The synchronization module is controlled to parse the time slot allocation information of the second region, realize frame header synchronization and obtain the uplink and downlink time slot allocation; According to the operating mode, the mode switching module is controlled to connect the second radio frequency terminal of the transceiver amplifier module to the reflector antenna array or the transmissive antenna array; Configure the beamcodebook of the reflector antenna array or the transmissive antenna array according to the characteristics of the target coverage area.

[0015] Furthermore, the analysis to derive the optimal codebook configuration for the source-oriented antenna array includes: The main control unit traverses the codebook set facing the source antenna array, measures the received power of the reference signal and the signal-to-interference-plus-noise ratio (SINR) for each codebook, analyzes the received power of the reference signal and the SINR, and obtains the optimal codebook configuration.

[0016] Further, the control synchronization module parses the time slot allocation information of the second region, including: The synchronization module uses a cellular communication module to parse the main information block and system information block messages of the second region and extract the uplink and downlink time slot ratio parameters from them; or, the synchronization module uses an envelope detector chip to detect the rising and falling edges of the signal in the time domain and, in conjunction with a preset trigger threshold, directly outputs a switching level signal that matches the uplink and downlink time slot ratio of the base station in the second region.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: (1) This invention achieves active amplification by setting up a transceiver amplification module. Compared with passive metasurface systems, the active metasurface system of this invention can achieve signal gain, thereby obtaining a larger coverage distance and a better signal-to-noise ratio with the same number of elements.

[0018] (2) The present invention controls the mode switching module through the main control module software, which can switch the working mode anytime and anywhere without replacing the hardware or reinstalling, thus solving the problem of poor adaptability to application scenarios. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a transmission-reflection integrated active metasurface system provided in an embodiment of the present invention; Figure 2 This is a flowchart of a beam control method for an integrated transmission and reflection active metasurface system provided in an embodiment of the present invention; Explanation of reference numerals in the attached figures: 1. Antenna element; 11. Source-oriented antenna element; 12. Transmitter / receiver amplification module; 13. Reflector antenna element; 14. Transmitter antenna element; 15. Mode switching module; 16. First channel switching module; 17. Second channel switching module; 18. First phase shifting module; 19. Second phase shifting module; 2. Main control module; 3. Synchronization module. Detailed Implementation

[0021] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0023] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "above," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "below" of the other element or feature will be oriented "above" the other element or feature. Therefore, the exemplary terms "below" and "below" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0024] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0025] Reference Figure 1 As shown, the present invention provides a technical solution: a transmission-reflection integrated active metasurface system, comprising multiple antenna array elements 1, each antenna array element 1 including a source-facing antenna array 11, a transceiver amplifier module 12, a reflective antenna array 13, and a transmission antenna array 14. The radio frequency signal terminal of the source-facing antenna array 11 is electrically connected to the first radio frequency terminal of the transceiver amplifier module 12, and the radio frequency signal terminals of the reflective antenna array 13 and the transmission antenna array 14 are both electrically connected to the second radio frequency terminal of the transceiver amplifier module 12. All source-facing antenna arrays 11 constitute a source-facing antenna array, all reflective antenna arrays 13 constitute a reflective antenna array, and all transmission antenna arrays 14 constitute a transmission antenna array.

[0026] In this embodiment, the transceiver amplification module 12 amplifies bidirectional radio frequency signals. During downlink, the transceiver amplification module 12 receives the source signal, amplifies it, and simultaneously outputs it to both the reflector antenna array 13 and the transmissive antenna array 14. During uplink, the transceiver amplification module 12 receives signals from both the reflector antenna array 13 and the transmissive antenna array 14, amplifies them, and transmits them to the source-facing antenna array 11. By configuring the transceiver amplification module 12, active amplification is achieved. Compared to passive metasurface systems, the active metasurface system of this invention can achieve signal gain, thereby obtaining a greater coverage distance and a better signal-to-noise ratio with the same number of arrays.

[0027] Reference Figure 1 As shown, in some embodiments, the active metasurface system further includes a main control module 2, and the antenna sub-unit 1 includes a mode switching module 15. The controlled end of the mode switching module 15 is electrically connected to the first control end of the main control module 2, the first end of the mode switching module 15 is electrically connected to the second radio frequency end of the transceiver amplifier module 12, the second end of the mode switching module 15 is electrically connected to the radio frequency signal end of the reflector antenna array 13, and the third end of the mode switching module 15 is electrically connected to the radio frequency signal end of the transmissive antenna array 14.

[0028] In this embodiment, the main control module 2 outputs a selection signal (e.g., high level selects reflection, low level selects transmission) to directly control the connectivity of the mode switching module 15. When the active metasurface system is deployed on the same side of the signal source and requires reflection compensation, the main control module 2 connects the mode switching module 15 to the reflector antenna array 13; when there is an obstacle between the signal source and the target and transmission through the wall is required, the main control module 2 connects the mode switching module 15 to the transmission antenna array 14. By controlling the mode switching module 15 through software, the main control module 2 can switch the working mode anytime and anywhere without replacing hardware or reinstalling, thus solving the problem of poor adaptability to application scenarios.

[0029] Reference Figure 1 As shown, in some embodiments, the active metasurface system further includes a synchronization module 3, and the antenna array subunit 1 further includes a first channel switching module 16 and a second channel switching module 17. The controlled terminals of the first channel switching module 16 and the second channel switching module 17 are both electrically connected to the control terminal of the synchronization module 3. The first terminal of the first channel switching module 16 is electrically connected to the radio frequency signal terminal facing the source antenna array 11, and the second terminal of the first channel switching module 16 is electrically connected to the first radio frequency terminal of the transceiver amplifier module 12. The first terminal of the second channel switching module 17 is electrically connected to the second radio frequency terminal of the transceiver amplifier module 12, and the second terminal of the second channel switching module 17 is electrically connected to the first terminal of the mode switching module 15.

[0030] In this embodiment, the synchronization module 3 obtains the frame header timing and uplink / downlink time slot ratio by parsing the downlink signal of the signal source. The control terminal of the synchronization module 3 directly outputs two control signals to control the operation of the first channel switching module 16 and the second channel switching module 17 respectively. When the downlink time slot arrives, the synchronization module 3 controls the first channel switching module 16 and the second channel switching module 17 to simultaneously conduct the downlink direction (i.e., from the antenna array 11 facing the signal source to the reflector antenna array 13 / transmitter antenna array 14); when the uplink time slot arrives, the synchronization module 3 controls the first channel switching module 16 and the second channel switching module 17 to simultaneously conduct the uplink direction (i.e., from the reflector antenna array 13 / transmitter antenna array 14 to the antenna array 11 facing the signal source).

[0031] Reference Figure 1 As shown, in some embodiments, the antenna array sub-unit 1 further includes a first phase shifting module 18 and a second phase shifting module 19. The controlled terminals of the first phase shifting module 18 and the second phase shifting module 19 are both electrically connected to the second control terminal of the main control module 2. The first terminal of the first phase shifting module 18 is electrically connected to the radio frequency signal terminal facing the source antenna array 11. The second terminal of the first phase shifting module 18 is electrically connected to the first terminal of the first channel switching module 16. The first terminal of the second phase shifting module 19 is electrically connected to the second terminal of the second channel switching module 17. The second terminal of the second phase shifting module 19 is electrically connected to the first terminal of the mode switching module 15.

[0032] In this embodiment, the first phase-shifting module 18 is used to adjust the phase of the received beam; the second phase-shifting module 19 is used to adjust the phase of the transmitted beam. Since both the first phase-shifting module 18 and the second phase-shifting module 19 are bidirectional passive devices, the phase value written once is applicable to both uplink and downlink signals simultaneously, eliminating the need for switching between uplink and downlink time slots. By adjusting the phase using the first phase-shifting module 18 and the second phase-shifting module 19, the main control module 2 can calculate the optimal receiving phase for aligning the source-facing antenna array with the source, and the optimal transmitting phase for aligning the reflector antenna array or the transmissive antenna array with the target coverage area.

[0033] Preferably, the mode switching module 15, the first channel switching module 16, and the second channel switching module 17 are switches. For example, the switches are radio frequency switches.

[0034] Optionally, the first phase-shifting module 18 and the second phase-shifting module 19 are PIN diodes or radio frequency switches, and the controlled terminal of the PIN diode or radio frequency switch is electrically connected to the second control terminal of the main control module 2. Alternatively, the first phase-shifting module 18 and the second phase-shifting module 19 each include a varactor diode and an inductor, and the controlled port of the varactor diode is electrically connected to the second control terminal of the main control module 2.

[0035] For example, in the first phase-shifting module 18, the phase-shifting function is achieved using two RF switches and microstrip paths of different lengths between the RF switches. Further, the ANT terminal of RF switch 1 is electrically connected to the RF signal terminal facing the source antenna array 11, and the ANT terminal of RF switch 2 is electrically connected to the first terminal of the first channel switching module 16. The switching selection path RF1 of RF switch 1 is electrically connected to the switching selection path RF1 of RF switch 2, the switching selection path RF2 of RF switch 1 is electrically connected to the switching selection path RF2 of RF switch 2, and so on. The switching selection paths of RF switch 1 and RF switch 2 are electrically connected to paths with the same number. If an octet RF switch is used, a 3-bit phase-shifting function can be achieved.

[0036] Reference Figure 2As shown, a beam control method for an integrated transmission and reflection active metasurface is executed by the aforementioned main control module 2: S101, Load the device system configuration table; The device system configuration table shall include at least the device frequency band, operating mode, source-oriented antenna array codebook configuration, reflector antenna array codebook configuration, and transmissive antenna array codebook configuration. S102, according to the source antenna array codebook configuration, adjust the beam codebook of the source antenna array to the maximum receiving range, and trigger the synchronization module 3 to search multiple first regions in the frequency band to obtain the broadcast information and signal quality indicators of each first region; S103, select a second region from multiple first regions based on signal quality indicators, and analyze the results to obtain the optimal codebook configuration for the source antenna array; S104, control synchronization module 3 to parse the time slot allocation information of the second region, realize frame header synchronization and obtain uplink and downlink time slot allocation; S105, depending on the working mode, the control mode switching module 15 connects the second radio frequency terminal of the transceiver amplifier module 12 to the reflector antenna array or the transceiver antenna array. S106, Configure the beamcodebook of the reflector antenna array or the transmissive antenna array according to the characteristics of the target coverage area.

[0037] Specifically, it enables fully automated and intelligent deployment of metasurface systems. Operators do not need to manually adjust antenna pointing or gain; the system can autonomously complete cell search, source alignment, time slot synchronization, mode selection, and coverage beam configuration after power-on, reducing engineering installation and maintenance costs.

[0038] In some embodiments, analysis is performed to determine the optimal codebook configuration for the source antenna array, including: The main control unit traverses the codebook set facing the source antenna array, measures the received power of the reference signal and the signal-to-interference-plus-noise ratio (SINR) for each codebook, analyzes the received power of the reference signal and the SINR, and obtains the optimal codebook configuration.

[0039] For example, the analysis of the received power and signal-to-interference-plus-noise ratio of the reference signal can be performed using the analysis method described in the invention application with application number 202411449646.8.

[0040] In some embodiments, the control synchronization module 3 parses the time slot allocation information of the second region, including: Synchronization module 3 uses a cellular communication module to parse the main information block and system information block messages of the second area and extract the uplink and downlink time slot ratio parameters from them; or, synchronization module 3 uses an envelope detector chip to detect the rising and falling edges of the signal in the time domain and, in conjunction with a preset trigger threshold, directly outputs a switching level signal that matches the uplink and downlink time slot ratio of the base station in the second area.

[0041] Option 1: Synchronization module 3 incorporates a commercial cellular communication module (such as a 5G NR module) to receive and decode the MIB and SIB broadcast by the second cell. The MIB contains basic information about the frame structure, and the SIB contains the TDD uplink and downlink time slot ratio. Synchronization module 3 extracts this parameter from the decoded message and then generates the corresponding high / low level switching signal based on the local clock.

[0042] Option 2: Synchronization module 3 uses an envelope detector chip (such as ADL6010) to directly perform envelope detection on the received downlink RF signal, identifying the rising edge (indicating the source has started transmitting the downlink signal) and falling edge (indicating the end of the downlink and the imminent entry into the uplink or guard interval). Combined with a preset trigger threshold, the envelope detector directly outputs a switching level signal synchronized with the source time slot.

[0043] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A transmissive and reflective integrated active metasurface system, characterized in that, include: Multiple antenna array elements (1) are provided. Each antenna array element (1) includes a source-facing antenna array (11), a transceiver amplifier module (12), a reflector antenna array (13), and a transmissive antenna array (14). The radio frequency signal terminal of the source-facing antenna array (11) is electrically connected to the first radio frequency terminal of the transceiver amplifier module (12). The radio frequency signal terminals of the reflector antenna array (13) and the transmissive antenna array (14) are both electrically connected to the second radio frequency terminal of the transceiver amplifier module (12). All of the source-facing antenna elements (11) constitute a source-facing antenna array, all of the reflector antenna elements (13) constitute a reflector antenna array, and all of the transmissive antenna elements (14) constitute a transmissive antenna array.

2. The integrated transmission and reflection active metasurface system according to claim 1, characterized in that, It also includes a main control module (2), and the antenna array unit (1) includes a mode switching module (15). The controlled end of the mode switching module (15) is electrically connected to the first control end of the main control module (2). The first end of the mode switching module (15) is electrically connected to the second radio frequency end of the transceiver amplifier module (12). The second end of the mode switching module (15) is electrically connected to the radio frequency signal end of the reflector antenna array (13). The third end of the mode switching module (15) is electrically connected to the radio frequency signal end of the transmissive antenna array (14).

3. The integrated transmission and reflection active metasurface system according to claim 2, characterized in that, It also includes a synchronization module (3). The antenna array unit (1) further includes a first channel switching module (16) and a second channel switching module (17). The controlled terminals of the first channel switching module (16) and the second channel switching module (17) are electrically connected to the control terminal of the synchronization module (3). The first terminal of the first channel switching module (16) is electrically connected to the radio frequency signal terminal of the antenna array facing the signal source (11). The second terminal of the first channel switching module (16) is electrically connected to the first radio frequency terminal of the transceiver amplifier module (12). The first terminal of the second channel switching module (17) is electrically connected to the second radio frequency terminal of the transceiver amplifier module (12). The second terminal of the second channel switching module (17) is electrically connected to the first terminal of the mode switching module (15).

4. The integrated transmission and reflection active metasurface system according to claim 3, characterized in that, The antenna array subunit (1) further includes a first phase shifting module (18) and a second phase shifting module (19). The controlled ends of the first phase shifting module (18) and the second phase shifting module (19) are electrically connected to the second control end of the main control module (2). The first end of the first phase shifting module (18) is electrically connected to the radio frequency signal end of the antenna array facing the source (11). The second end of the first phase shifting module (18) is electrically connected to the first end of the first channel switching module (16). The first end of the second phase shifting module (19) is electrically connected to the second end of the second channel switching module (17). The second end of the second phase shifting module (19) is electrically connected to the first end of the mode switching module (15).

5. The integrated transmission and reflection active metasurface system according to claim 4, characterized in that, The mode switching module (15), the first channel switching module (16), and the second channel switching module (17) are switches.

6. The integrated transmission and reflection active metasurface system according to claim 4, characterized in that, The first phase shift module (18) and the second phase shift module (19) are PIN diodes or radio frequency switches.

7. The integrated transmission and reflection active metasurface system according to claim 6, characterized in that, The first phase shifting module (18) and the second phase shifting module (19) each include a varactor diode and an inductor, and the controlled terminal of the varactor diode is electrically connected to the second control terminal of the main control module (2).

8. A beam control method for a transmissive-reflective integrated active metasurface, characterized in that, The method is executed by the main control module (2) according to any one of claims 3 to 7: Load the device system configuration table; the device system configuration table includes at least the device frequency band, operating mode, source-oriented antenna array codebook configuration, reflector antenna array codebook configuration, and transmissive antenna array codebook configuration. According to the source-oriented antenna array codebook configuration, the beam codebook of the source-oriented antenna array is adjusted to the maximum receiving range, and the synchronization module (3) is triggered to search multiple first regions in the frequency band to obtain the broadcast information and signal quality indicators of each first region; Based on the signal quality index, a second region is selected from the plurality of first regions, and analysis is performed to obtain the optimal codebook configuration for the source-oriented antenna array; The synchronization module (3) is controlled to parse the time slot allocation information of the second region, realize frame header synchronization and obtain the uplink and downlink time slot allocation; According to the working mode, the mode switching module (15) is controlled to connect the second radio frequency terminal of the transceiver amplifier module (12) to the reflector antenna array or the transmissive antenna array; Configure the beamcodebook of the reflector antenna array or the transmissive antenna array according to the characteristics of the target coverage area.

9. The beam control method for a transmissive-reflective integrated active metasurface according to claim 8, characterized in that, The analysis to determine the optimal codebook configuration for the source-oriented antenna array includes: The main control unit traverses the codebook set facing the source antenna array, measures the received power of the reference signal and the signal-to-interference-plus-noise ratio (SINR) for each codebook, analyzes the received power of the reference signal and the SINR, and obtains the optimal codebook configuration.

10. The beam control method for a transmissive-reflective integrated active metasurface according to claim 9, characterized in that, The control synchronization module (3) parses the time slot allocation information of the second region, including: The synchronization module (3) uses a cellular communication module to parse the main information block and system information block messages of the second area and extract the uplink and downlink time slot ratio parameters from them; or, the synchronization module (3) uses an envelope detector chip to detect the rising and falling edges of the signal in the time domain and, in conjunction with a preset trigger threshold, directly outputs a switching level signal that matches the uplink and downlink time slot ratio of the base station in the second area.

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