A control method and device of an intelligent metasurface and a storage medium

Abstract

This application provides a control method, apparatus, and storage medium for a smart metasurface, relating to the field of communication technology, to solve the technical problem in the prior art where smart metasurfaces cannot determine the location of a terminal. The control method for the smart metasurface includes: acquiring multiple channel state information; the channel state information representing the channel state of communication signals reflected from the smart metasurface to the terminal by the base station; determining a target channel state information among the multiple channel state information that meets preset conditions; determining the beam direction reflected by the smart metasurface corresponding to the target channel state information as the target beam direction; and sending control information to the smart metasurface; the control information instructing the smart metasurface to reflect the communication signals transmitted by the base station to the terminal according to the target beam direction.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a control method, device and storage medium for an intelligent metasurface. Background Technology

[0002] During the propagation of wireless signals, obstructions such as walls can cause significant signal loss, resulting in low transmission quality. However, the electromagnetic units of the intelligent metasurface system can reflect wireless signals, thus avoiding the signal loss caused by walls.

[0003] However, because the intelligent metasurface system cannot determine the location of the terminal, it cannot accurately determine the direction of wireless signal reflection, thus causing wireless signal loss. Summary of the Invention

[0004] This application provides a control method, apparatus, and storage medium for a smart metasurface, which addresses the technical problem in the prior art that smart metasurfaces cannot determine the terminal location.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] In a first aspect, a control method for a smart metasurface is provided, comprising: acquiring multiple channel state information; the channel state information representing the channel state of a communication signal reflected from a base station to a terminal via the smart metasurface; determining a target channel state information among the multiple channel state information that satisfies preset conditions; the preset conditions including: the reference signal receiving power (RSRP) in the channel state information is greater than a preset RSRP, and / or, the signal to interference plus noise ratio (SINR) in the channel state information is greater than a preset SINR; determining the beam direction reflected by the smart metasurface corresponding to the target channel state information as the target beam direction; sending control information to the smart metasurface; the control information instructing the smart metasurface to reflect the communication signal transmitted by the base station to the terminal according to the target beam direction.

[0007] Optionally, multiple channel state information can be obtained, including: when the terminal is in an idle state, performing multiple Layer 1 Reference Signal Received Power (L1-RSRP) measurements based on the Synchronization Signal Block (SSB) to obtain multiple channel state information; or, when the terminal is in a connected state, performing multiple Radio Resource Management (RRM) measurements based on the Channel State Information-Reference Signal (CSI-RS) to obtain multiple channel state information.

[0008] Optionally, multiple RRM measurements are performed based on CSI-RS to obtain multiple channel state information, including: when the service type of the communication signal transmission service is a preset service type, multiple non-periodic RRM measurements are performed based on CSI-RS to obtain multiple channel state information; the preset service type includes: Ultra-Reliable Low-Latency Communications (uRLLC) service; or, when the service type of the communication signal transmission service is not a preset service type, multiple periodic RRM measurements are performed based on CSI-RS to obtain multiple channel state information.

[0009] Secondly, a control method for a smart metasurface is provided, comprising: receiving control information through a control link; the control link being a wireless transmission link between a base station and the smart metasurface based on a New Radio (NR) Uu interface protocol stack; the control information being used to instruct the smart metasurface to reflect the communication signal transmitted by the base station to a terminal according to the target beam direction determined by the base station; demodulating the control information to obtain an excitation signal corresponding to the control information; and controlling the reflection direction of the communication signal transmitted by the base station according to the excitation signal.

[0010] Thirdly, a control device for a smart metasurface is provided, comprising: an acquisition unit, a processing unit, and a transmission unit; the acquisition unit is used to acquire multiple channel state information; the channel state information is used to represent the channel state of communication signals reflected from the base station to the terminal through the smart metasurface; the processing unit is used to determine a target channel state information among the multiple channel state information that meets preset conditions; the preset conditions include: RSRP in the channel state information is greater than a preset RSRP, and / or, SINR in the channel state information is greater than a preset SINR; the processing unit is further used to determine the beam direction reflected by the smart metasurface corresponding to the target channel state information as the target beam direction; the transmission unit is used to transmit control information to the smart metasurface; the control information is used to instruct the smart metasurface to reflect the communication signals transmitted by the base station to the terminal according to the target beam direction.

[0011] Optionally, the acquisition unit is specifically used to: when the terminal is in an idle state, perform multiple L1-RSRP measurements based on SSB to obtain multiple channel state information; or, when the terminal is in a connected state, perform multiple RRM measurements based on CSI-RS to obtain multiple channel state information.

[0012] Optionally, the processing unit is specifically used to: when the service type of the communication signal transmission service is a preset service type, perform multiple non-periodic RRM measurements based on CSI-RS to obtain multiple channel state information; the preset service type includes: uRLLC service; or, when the service type of the communication signal transmission service is not a preset service type, perform multiple periodic RRM measurements based on CSI-RS to obtain multiple channel state information.

[0013] Fourthly, a control device for a smart metasurface is provided, comprising: a receiving unit and a processing unit; the receiving unit is used to receive control information through a control link; the control link is a wireless transmission link between a base station and the smart metasurface based on an NR Uu interface protocol stack; the control information is used to instruct the smart metasurface to reflect the communication signal transmitted by the base station to a terminal according to the target beam direction determined by the base station; the processing unit is used to demodulate the control information to obtain an excitation signal corresponding to the control information; the processing unit is also used to control the reflection direction of the communication signal transmitted by the base station according to the excitation signal.

[0014] Fifthly, a control device for an intelligent metasurface is provided, comprising a memory and a processor; the memory is used to store computer-executed instructions, and the processor is connected to the memory via a bus; when the control device for the intelligent metasurface is running, the processor executes the computer-executed instructions stored in the memory, so that the control device for the intelligent metasurface executes the control method for the intelligent metasurface of the first aspect.

[0015] The control device for the intelligent metasurface can be a network device or a component of a network device, such as a chip system within the network device. This chip system supports the network device in implementing the functions involved in the first aspect and any of its possible implementations, such as acquiring, determining, and transmitting data and / or information involved in the control method for the intelligent metasurface described above. The chip system includes a chip, but may also include other discrete devices or circuit structures.

[0016] In a sixth aspect, a smart metasurface is provided, comprising: a control module and a forwarding module; the control module includes: a communication module and a beam control network; the forwarding module includes: a passive smart metasurface array; the communication module is used to receive control information through a control link and demodulate the control information to obtain an excitation signal corresponding to the control information; the control link is a wireless transmission link between a base station and the smart metasurface based on a New Radio (NR) Uu interface protocol stack; the control information is used to instruct the smart metasurface to reflect the communication signal transmitted by the base station to the terminal according to the target beam direction determined by the base station; the communication module is also used to send the excitation signal to the beam control network; the beam control network is used to receive the excitation signal and control the reflection direction of the communication signal reflected by the passive smart metasurface array according to the excitation signal.

[0017] In a seventh aspect, a computer-readable storage medium is provided, comprising computer-executable instructions that, when executed on a computer, cause the computer to perform the control method for the intelligent metasurface described in the first aspect.

[0018] Eighthly, a computer program product is also provided, the computer program product including computer instructions that, when executed on a control device for a smart metasurface, cause the control device for the smart metasurface to perform the control method for the smart metasurface as described in the first aspect above.

[0019] It should be noted that the aforementioned computer instructions may be stored, in whole or in part, on a computer-readable storage medium. This computer-readable storage medium may be packaged together with the processor of the smart metasurface control device, or it may be packaged separately from the processor of the smart metasurface control device; this application does not limit this.

[0020] The descriptions of the second, third, fourth, fifth, sixth, seventh, and eighth aspects of this application can be found in the detailed description of the first aspect.

[0021] In the embodiments of this application, the name of the control device for the aforementioned intelligent metasurface does not limit the device or functional module itself. In actual implementation, these devices or functional modules may appear under other names. For example, the receiving unit may also be called a receiving module, receiver, etc. As long as the function of each device or functional module is similar to that of this application, it falls within the scope of the claims of this application and its equivalents.

[0022] The technical solution provided in this application brings at least the following beneficial effects:

[0023] Based on any of the above aspects, this application provides a control method for a smart metasurface, comprising: a base station acquiring multiple channel state information. The channel state information represents the channel state of a communication signal reflected from the base station to a terminal via the smart metasurface. Then, the base station determines a target channel state information among the multiple channel state information that satisfies preset conditions. The preset conditions include: the RSRP in the channel state information is greater than a preset RSRP, and / or, the SINR in the channel state information is greater than a preset SINR. Next, the base station determines the beam direction reflected by the smart metasurface corresponding to the target channel state information as the target beam direction. Then, the base station sends control information to the smart metasurface. The control information instructs the smart metasurface to reflect the communication signal transmitted by the base station to the terminal according to the target beam direction.

[0024] As shown above, the base station can determine the target channel state information that meets the preset conditions from multiple acquired channel state information. Since the target channel state information is the channel state information that meets the preset conditions, the base station can determine that the beam direction reflected by the smart metasurface corresponding to the target channel state information is the region of the terminal.

[0025] Subsequently, the base station sends control information to the smart metasurface, causing the smart metasurface to reflect the communication signal transmitted by the base station in the target beam direction corresponding to the target channel state information. In this way, since the reflection direction of the communication signal reflected by the smart metasurface is towards the terminal's region, the channel state between the base station and the terminal can be improved, thus enhancing the communication quality of the communication signal.

[0026] The beneficial effects of the first, second, third, fourth, fifth, sixth, seventh, and eighth aspects of this application can all be referred to in the analysis of the above-mentioned beneficial effects, and will not be repeated here. Attached Figure Description

[0027] Figure 1 A schematic diagram of the structure of a control system for an intelligent metasurface provided in an embodiment of this application;

[0028] Figure 2 This is a schematic diagram of the structure of a smart metasurface provided in an embodiment of this application;

[0029] Figure 3 A schematic diagram of the hardware structure of a control device for an intelligent metasurface provided in this application embodiment. Figure 1 ;

[0030] Figure 4 A schematic diagram of the hardware structure of a control device for an intelligent metasurface provided in this application embodiment. Figure 2 ;

[0031] Figure 5A flowchart illustrating a control method for an intelligent metasurface provided in this application embodiment. Figure 1 ;

[0032] Figure 6 A flowchart illustrating a control method for an intelligent metasurface provided in this application embodiment. Figure 2 ;

[0033] Figure 7 A flowchart illustrating a control method for an intelligent metasurface provided in this application embodiment. Figure 3 ;

[0034] Figure 8 A schematic diagram of a CSI-RS-based semi-persistent periodic RRM measurement triggered by MAC CE provided in an embodiment of this application;

[0035] Figure 9 A schematic diagram of a DCI-triggered semi-persistent periodic CSI-RS-based RRM measurement process provided for an embodiment of this application;

[0036] Figure 10 A schematic diagram of a DCI-triggered non-periodic CSI-RS-based RRM measurement provided for an embodiment of this application;

[0037] Figure 11 A schematic diagram of a periodic RRM measurement based on CSI-RS provided for an embodiment of this application;

[0038] Figure 12 A flowchart illustrating a control method for an intelligent metasurface provided in this application embodiment. Figure 4 ;

[0039] Figure 13 Another structural schematic diagram of a control system for an intelligent metasurface provided in an embodiment of this application;

[0040] Figure 14 A schematic diagram of the structure of a control device for an intelligent metasurface provided in this application embodiment. Figure 1 ;

[0041] Figure 15 A schematic diagram of the structure of a control device for an intelligent metasurface provided in this application embodiment. Figure 2 . Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] It should be noted that in the embodiments of this application, the words "exemplary" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of the words "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0044] To facilitate a clear description of the technical solutions of the embodiments of this application, the terms "first" and "second" are used in the embodiments of this application to distinguish the same or similar items with essentially the same function and effect. Those skilled in the art can understand that the terms "first" and "second" are not intended to limit the quantity or execution order.

[0045] As described in the background section, during the propagation of wireless signals (also known as communication signals), obstructions such as walls can cause significant signal loss, resulting in low transmission quality. The electromagnetic units of the intelligent metasurface system can reflect wireless signals, thus avoiding the signal loss caused by walls.

[0046] However, because the intelligent metasurface system cannot determine the location of the terminal, it cannot accurately determine the direction of wireless signal reflection, thus causing wireless signal loss.

[0047] To address the aforementioned problems, this application provides a control method for a smart metasurface, comprising: a base station acquiring multiple channel state information. The channel state information represents the channel state of the communication signal reflected from the base station to a terminal via the smart metasurface. Then, the base station determines a target channel state information among the multiple channel state information that satisfies preset conditions. These preset conditions include: the RSRP in the channel state information is greater than a preset RSRP, and / or, the SINR in the channel state information is greater than a preset SINR. Next, the base station determines the beam direction reflected by the smart metasurface corresponding to the target channel state information as the target beam direction. Then, the base station sends control information to the smart metasurface. The control information instructs the smart metasurface to reflect the communication signal transmitted by the base station to the terminal according to the target beam direction.

[0048] As shown above, the base station can determine the target channel state information that meets the preset conditions from multiple acquired channel state information. Since the target channel state information is the channel state information that meets the preset conditions, the base station can determine that the beam direction reflected by the smart metasurface corresponding to the target channel state information is the region of the terminal.

[0049] Subsequently, the base station sends control information to the smart metasurface, causing the smart metasurface to reflect the communication signal transmitted by the base station in the target beam direction corresponding to the target channel state information. In this way, since the reflection direction of the communication signal reflected by the smart metasurface is towards the terminal's region, the channel state between the base station and the terminal can be improved, thus enhancing the communication quality of the communication signal.

[0050] The control method for this intelligent metasurface is applicable to the control system of intelligent metasurfaces. Figure 1 One structure of the control system for this intelligent metasurface is shown. For example... Figure 1 As shown, the control system of the smart metasurface includes: base station 101, smart metasurface 102 and terminal 103.

[0051] Base station 101 and smart metasurface 102 are communicatively connected. Base station 101 is communicatively connected to terminal 103 through smart metasurface 102.

[0052] The smart metasurface 102 can reflect communication signals transmitted by the base station 101 and the terminal 103. The base station 101 and the terminal 103 can receive the communication signals reflected by the smart metasurface.

[0053] In this application, base station 101 can transmit communication signals for service transmission with terminal 103. Smart metasurface 102 can reflect the communication signals transmitted by base station 101 to the area where terminal 103 is located. Then, terminal 103 can receive the communication signals reflected by smart metasurface, so that terminal 103 can transmit services with base station 101.

[0054] Terminal 103 can transmit communication signals for service transmission with base station 101. Then, smart metasurface 102 can reflect the communication signals transmitted by terminal 103 back to the area where base station 101 is located. Afterwards, base station 101 can receive the communication signals reflected by smart metasurface, so that base station 101 can transmit services with terminal 103.

[0055] In some embodiments, the smart metasurface 102 may include a control module 201 and a forwarding module 202. The control module 201 includes a communication module and a wave control network. The forwarding module 202 includes a passive smart metasurface array.

[0056] The communication module receives control information via the control link and demodulates it to obtain the corresponding excitation signal. The control link is a wireless transmission link between the base station and the smart metasurface based on the NR Uu interface protocol stack. The control information instructs the smart metasurface to reflect the communication signal transmitted by the base station back to the terminal according to the target beam direction determined by the base station.

[0057] The communication module is also used to send excitation signals to the beam control network.

[0058] A wave-controlled network is used to receive excitation signals and control the reflection direction of passive intelligent metasurface array reflection communication signals according to the excitation signals.

[0059] For example, Figure 2 A structure of a smart metasurface is shown. For example... Figure 2 As shown, the control module 201 can be a lightweight, simplified terminal module configured with an L1 / L2 protocol stack, and can control a passive intelligent metasurface array through an internal interface. The passive intelligent metasurface array can control the reflection direction of communication signals according to the information sent by the control module 201.

[0060] Optionally, terminal 103 may be a device that provides voice and / or data connectivity to a user, a handheld device with wireless connectivity, or other processing device connected to a wireless modem. The terminal may communicate with one or more core networks via a radio access network (RAN). The terminal may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, or a portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile device that exchanges voice and / or data with the radio access network, such as a mobile phone, tablet computer, laptop computer, netbook, or personal digital assistant (PDA).

[0061] Optionally, base station 101 can be a wireless communication base station or base station controller, etc. In this embodiment, the base station can be a base station (BTS) in Global System for Mobile Communication (GSM), Code Division Multiple Access (CDMA), a base station (nodeB) in Wideband Code Division Multiple Access (WCDMA), an eNB in ​​Internet of Things (IoT) or Narrow Band-Internet of Things (NB-IoT), a base station in a future 5G mobile communication network, or a future evolved public land mobile network (PLMN). This embodiment does not impose any limitations on this.

[0062] The basic hardware structure of base station 101 includes Figure 3 or Figure 4 The components included in the control device of the smart metasurface shown below. Figure 3 and Figure 4 Taking the control device of the intelligent metasurface shown as an example, the hardware structure of the base station 101 is introduced.

[0063] like Figure 3 The diagram shown is a hardware structure schematic of a control device for an intelligent metasurface provided in an embodiment of this application. The control device includes a processor 21, a memory 22, a communication interface 23, and a bus 24. The processor 21, memory 22, and communication interface 23 are connected via the bus 24.

[0064] Processor 21 is the control center of the intelligent metasurface control device. It can be a single processor or a collective term for multiple processing elements. For example, processor 21 can be a general-purpose central processing unit (CPU) or other general-purpose processors. Among them, the general-purpose processor can be a microprocessor or any conventional processor.

[0065] As one embodiment, processor 21 may include one or more CPUs, for example Figure 3 CPU 0 and CPU 1 are shown in the diagram.

[0066] The memory 22 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto.

[0067] In one possible implementation, the memory 22 can exist independently of the processor 21. The memory 22 can be connected to the processor 21 via a bus 24 and is used to store instructions or program code. When the processor 21 calls and executes the instructions or program code stored in the memory 22, it can implement the intelligent metasurface control method provided in the following embodiments of this application.

[0068] In this embodiment, the software programs stored in the memory 22 of the base station 101 are different, so the functions implemented by the base station 101 are different. The functions performed by each device will be described with reference to the following flowchart.

[0069] In another possible implementation, the memory 22 can also be integrated with the processor 21.

[0070] Communication interface 23 is used for the control device of the intelligent metasurface to connect with other devices via a communication network, such as Ethernet, wireless access network, wireless local area network (WLAN), etc. Communication interface 23 may include a receiving unit for receiving data and a transmitting unit for sending data.

[0071] Bus 24 can be an industry standard architecture (ISA) bus, a peripheral component interconnect (PCI) bus, or an extended industry standard architecture (EISA) bus, etc. This bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 3 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0072] Figure 4 Another hardware structure of the control device for the smart metasurface in this application is shown. For example... Figure 3 As shown, the control device for the intelligent metasurface may include a processor 31 and a communication interface 32. The processor 31 is coupled to the communication interface 32.

[0073] The functions of processor 31 can be referred to in the description of processor 21 above. In addition, processor 31 also has a storage function, and can perform the functions of memory 22 mentioned above.

[0074] The communication interface 32 is used to provide data to the processor 31. The communication interface 32 can be an internal interface of the control device of the smart metasurface, or it can be an external interface of the control device of the smart metasurface (equivalent to communication interface 23).

[0075] It should be pointed out that, Figure 3 (or Figure 4 The structure shown in the diagram does not constitute a limitation on the control device for the intelligent metasurface, except... Figure 3 (or Figure 4 In addition to the components shown, the control device for the smart metasurface may include more or fewer components than those shown, or combine certain components, or have different component arrangements.

[0076] The control method for intelligent metasurfaces provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0077] The intelligent metasurface control method provided in this application embodiment is applied to... Figure 1 The base station 101 in the control system of the intelligent metasurface shown is, for example Figure 5 As shown, the control method for intelligent metasurfaces provided in this application includes:

[0078] S501, The base station acquires multiple channel status information.

[0079] Among them, channel state information is used to represent the channel state of communication signals reflected from the base station to the terminal through the smart metasurface.

[0080] Specifically, to acquire multiple channel state information, the base station can transmit communication signals for measuring the channel state using beam scanning, that is, sequentially transmitting multiple communication signals using beams from different directions. Since the beams are emitted from different directions, the terminal can directly receive the communication signals transmitted by the base station. Furthermore, the terminal can also receive multiple communication signals from beams in different directions after reflection by the smart metasurface. Subsequently, the terminal can measure these multiple communication signals and send the measurement results, i.e., multiple channel state information, to the base station.

[0081] Optionally, the base station can acquire multiple channel status information within a preset time period.

[0082] S502. The base station determines the target channel state information that meets the preset conditions among multiple channel state information.

[0083] The preset conditions include: RSRP in the channel state information is greater than the preset RSRP, and / or SINR in the channel state information is greater than the preset SINR.

[0084] Specifically, after acquiring multiple channel state information, the base station can identify the channel state information whose RSRP is greater than a preset RSRP and / or whose SINR is greater than a preset SINR as the target channel state information. Since a higher RSRP and / or SINR in the channel state information indicates a better channel state, the channel state can be represented by RSRP and / or SINR.

[0085] Optionally, the preset conditions may also include: the channel delay in the channel state information is less than the preset delay, and the transmission rate in the channel state information is greater than the preset rate, etc.

[0086] In practical applications, the target channel state information can be the optimal channel state information among multiple channel state information sets. The optimal channel state information can be the channel state information with the highest RSRP among multiple channel state information sets, and / or, the channel state information with the highest SINR among multiple channel state information sets.

[0087] S503. The base station determines the beam direction reflected by the smart metasurface corresponding to the target channel state information as the target beam direction.

[0088] Specifically, since base stations transmit communication signals via beam scanning, different beams have different transmission directions. In this case, the reflected beam directions of the communication signals from the smart metasurface also differ, resulting in different channel state information acquired by the base station. When the base station determines the target channel state information, it can determine the target beam direction as the beam direction reflected by the smart metasurface corresponding to the target channel state information.

[0089] Since the channel state corresponding to the target channel state information is relatively good, the base station can determine that the target beam direction corresponds to the area of ​​the terminal. At this point, the base station can determine the location of the terminal corresponding to the target beam direction.

[0090] S504, The base station sends control information to the smart metasurface.

[0091] The control information is used to instruct the smart metasurface to reflect the communication signals transmitted by the base station to the terminal according to the target beam direction.

[0092] Specifically, since the base station can determine the target beam direction as the terminal's location, it can generate control information based on this direction. Then, the base station can send this control information to the smart metasurface via a communication connection. Upon receiving the control information from the base station, the smart metasurface reflects the communication signal transmitted by the base station in the direction of the target beam indicated in the control information. Because the target beam direction corresponds to the terminal's location, the channel condition for the terminal to receive the communication signal reflected from the smart metasurface is good, resulting in good communication quality.

[0093] In some embodiments, combined with Figure 5 ,like Figure 6 As shown, in the above S501, the base station obtains multiple channel state information, specifically including:

[0094] S601. When the terminal is in an idle state, the base station performs multiple L1-RSRP measurements based on SSB to obtain multiple channel state information.

[0095] SSB refers to a block that includes the Primary Synchronization Signal (PSS), the Secondary Synchronization Signal (SSS), and the Physical Broadcast Channel (PBCH).

[0096] Specifically, when the terminal is in an idle state, the base station can transmit SSBs to the terminal via beam scanning. The terminal can then directly receive the SSBs transmitted by the base station. Additionally, the terminal can also receive SSBs reflected by the smart metasurface. In this way, the terminal can measure the demodulation reference signal (DMRS) associated with the PBCH in the SSB, thereby obtaining the SSB-related RSRP and SINR. Afterwards, the terminal can transmit the SSB-related RSRP and SINR to the base station. Since the SSBs are transmitted through the channel between the base station, the smart metasurface, and the terminal, the base station can determine the SSB-related RSRP and SINR, which constitute the channel state information of the channel between the base station, the smart metasurface, and the terminal.

[0097] It should be noted that the base station can periodically send SSBs to the terminal to perform L1-RSRP measurements. Furthermore, since the base station performs multiple L1-RSRP measurements within a preset time period, it can acquire multiple channel state information sets.

[0098] Optionally, the time period for the base station to periodically send SSB to the terminal can be 5 milliseconds, 10 milliseconds, 20 milliseconds, etc.

[0099] Optionally, the base station can periodically acquire multiple channel state information to determine the target channel state information.

[0100] S602. When the terminal is in the connected state, the base station performs multiple RRM measurements based on CSI-RS to obtain multiple channel state information.

[0101] Specifically, when the terminal is in connected state, the base station can configure multiple CSI-RS resources for each SS burst. Then, the base station can send the SS burst configured with CSI-RS resources to the terminal. Since an SS burst consists of multiple SSBs, and SSBs can enable time synchronization between the terminal and the base station, after receiving the SS burst sent by the base station through the smart metasurface, the terminal obtains time synchronization with the base station through the SS burst. Then, the terminal can search for CSI-RS resources through the SSBs in the SS burst.

[0102] Subsequently, the terminal measures multiple CSI-RS resources and performs linear averaging of the measurement results to obtain information such as RSRP and SINR of the CSI-RS resources. Following this, the terminal sends the RSRP and SINR information of the CSI-RS resources to the base station. Since CSI-RS resources are transmitted through the channel between the base station, the smart metasurface, and the terminal, the base station can determine the RSRP and SINR information of the CSI-RS resources, thus providing channel state information for the channel between the base station, the smart metasurface, and the terminal.

[0103] For example, after configuring multiple CSI-RS resources for an SS burst, the base station can allocate time slot resources to the CSI-RS resources. Assume that the time slot resource allocated to each CSI-RS is (k, l). p,μ When k = 0, k represents the 0th subcarrier of resource block 0, l is the time domain index, p is the port number, and μ is the time slot index.

[0104] After receiving the CSI-RS resources sent by the base station, the terminal can determine that the sequence of the CSI-RS resources is r(m):

[0105]

[0106] Where j is the imaginary unit, m represents the carrier index within an Orthogonal Frequency Division Multiplexing (OFDM) technique, and c(n) is a pseudo-random sequence composed of a 31-bit Gold sequence.

[0107] c(n)=(x1(n+N C )+x2(n+N C ))mod2;

[0108] x1(n+31)=(x1(n+3)+x1(n))mod2;

[0109] x2(n+31)=(x2(n+3)+x2(n+2)+x2(n+1)+x2(n))mod2;

[0110] Where Nc represents the initial phase of the output Gold sequence in the shift register, the value of which is set manually. x1 and x2 are two different sequences, x1(n) is the nth bit of the x1 sequence, and x2(n) is the nth bit of the x2 sequence, where n is 0-30.

[0111] In some embodiments, combined with Figure 6 ,like Figure 7 As shown, in the above S602, the base station performs multiple Radio Resource Management (RRM) measurements based on CSI-RS to obtain multiple channel state information, specifically including:

[0112] S701. When the service type of the communication signal transmission service is a preset service type, the base station performs multiple non-periodic RRM measurements based on CSI-RS to obtain multiple channel state information.

[0113] The preset service types include: uRLLC (Ultra-Reliable Low-Latency Communication) service.

[0114] Specifically, since the preset service type can include uRLLC services, and non-periodic CSI-RS-based RRM measurements can promptly send channel state information to the base station based on changes in channel state and service requirements, the base station can perform non-periodic RRM measurements based on CSI-RS when the service type of the communication signal transmission service is the preset service type.

[0115] For example, Figure 8 This illustrates a semi-persistent, periodic, CSI-RS-based RRM measurement triggered by a Media Access Control (MAC) control element (CE). For example... Figure 8 As shown:

[0116] S801. The base station configures CSI resources and CSI reports through Radio Resource Control (RRC).

[0117] Specifically, when configuring CSI-RS resources for an SS burst, the base station provides CSI resources and a CSI report for the SS burst. CSI resources are used to instruct the terminal to measure information such as RSRP and SINR of the CSI-RS. CSI reports are used to instruct the terminal to send channel state information such as RSRP and SINR to the base station.

[0118] S802, the base station activates the transmission of CSI-RS resources through MAC CE1.

[0119] Specifically, the base station does not need to periodically send CSI-RS resources to the terminal. When MAC CE1 is activated, the base station sends CSI-RS resources to the terminal.

[0120] S803, the base station sends CSI-RS resources to the terminal through the smart metasurface.

[0121] S804. The terminal performs multiple RRM measurements on the CSI-RS resources to obtain multiple channel state information.

[0122] S805, the base station activates the transmission of CSI-RS reports via MAC CE2.

[0123] Specifically, after sending CSI-RS resources to the terminal, the base station can send a CSI-RS report to the base station. The CSI-RS report is used to instruct the terminal to periodically send measured channel state information to the base station.

[0124] S806, the base station sends CSI-RS reports to the terminal through the smart metasurface.

[0125] S807. The terminal periodically sends multiple channel status information measured by the terminal to the base station through the Physical Uplink Control Channel (PUCCH) or the Physical Uplink Shared Channel (PUSCH).

[0126] S808: The base station generates control information based on multiple channel status information sent by the terminal.

[0127] Specifically, the base station can identify the target channel state information that meets preset conditions among multiple received channel state information, and determine the beam direction of the smart metasurface reflection corresponding to the target channel state information as the target beam direction. Then, the base station generates control information based on the target beam direction.

[0128] S809, the base station periodically sends control information to the smart metasurface.

[0129] The period during which the base station sends control information is longer than the period during which the base station sends CSI-RS resources and CSI-RS reports to the terminal.

[0130] The S810 intelligent metasurface reflects communication signals transmitted by the base station to the terminal based on control information.

[0131] Specifically, the base station can reflect the communication signal transmitted by the base station to the terminal based on the target beam direction in the control information.

[0132] Figure 9 This illustrates a semi-persistent, periodic, CSI-RS-based RRM measurement triggered by Downlink Control Information (DCI). For example... Figure 9 As shown:

[0133] S901, the base station configures CSI resources and CSI reports via RRC.

[0134] Specifically, when configuring CSI-RS resources for an SS burst, the base station provides CSI resources and a CSI report for the SS burst. CSI resources are used to instruct the terminal to measure information such as RSRP and SINR of the CSI-RS. CSI reports are used to instruct the terminal to send channel state information such as RSRP and SINR to the base station.

[0135] S902, the base station activates the transmission of CSI-RS resources through MAC CE1.

[0136] Specifically, the base station does not need to periodically send CSI-RS resources to the terminal. When MAC CE1 is activated, the base station sends CSI-RS resources to the terminal.

[0137] S903: The base station sends CSI-RS resources to the terminal through the intelligent metasurface.

[0138] S904. The terminal performs multiple RRM measurements on the CSI-RS resources to obtain multiple channel state information.

[0139] S905, the base station activates the transmission of CSI-RS reports via DCI.

[0140] Specifically, after sending CSI-RS resources to the terminal, the terminal can send a CSI-RS report to the base station when DCI is activated. The CSI-RS report is used to instruct the terminal to periodically send measured channel state information to the base station.

[0141] S906, the base station sends CSI-RS reports to the terminal through the intelligent metasurface.

[0142] S907. The terminal periodically sends multiple channel status information measured by the terminal to the base station through the PUCCH or PUSCH channel.

[0143] S908: The base station generates control information based on multiple channel status information sent by the terminal.

[0144] Specifically, the base station can identify the target channel state information that meets preset conditions among multiple received channel state information, and determine the beam direction of the smart metasurface reflection corresponding to the target channel state information as the target beam direction. Then, the base station generates control information based on the target beam direction.

[0145] S909, the base station periodically sends control information to the smart metasurface.

[0146] The period during which the base station sends control information is longer than the period during which the base station sends CSI-RS resources and CSI-RS reports to the terminal.

[0147] The S910 intelligent metasurface reflects communication signals transmitted by the base station to the terminal based on control information.

[0148] Specifically, the base station can reflect the communication signal transmitted by the base station to the terminal based on the target beam direction in the control information.

[0149] Figure 10 A DCI-triggered, non-periodic CSI-RS-based RRM measurement is illustrated. For example... Figure 10 As shown:

[0150] S1001. The base station configures CSI resources and CSI reports via RRC.

[0151] Specifically, when configuring CSI-RS resources for an SS burst, the base station provides CSI resources and a CSI report for the SS burst. CSI resources are used to instruct the terminal to measure information such as RSRP and SINR of the CSI-RS. CSI reports are used to instruct the terminal to send channel state information such as RSRP and SINR to the base station.

[0152] S1002. The base station activates CSI-RS resources and sends CSI-RS reports via DCI.

[0153] Specifically, the base station does not need to periodically send CSI-RS resources to the terminal. When DCI is activated, the base station can send CSI-RS resource CSI-RS reports to the terminal.

[0154] S1003. The base station sends CSI-RS resources and CSI-RS reports to the terminal through the intelligent metasurface.

[0155] S1004. The terminal performs multiple RRM measurements on the CSI-RS resources to obtain multiple channel state information.

[0156] S1005. The terminal periodically sends multiple channel state information measured by the terminal to the base station.

[0157] Specifically, the base station can trigger the transmission of CSI-RS reports through DCI, so that the terminal can send multiple channel status information to the base station non-periodically.

[0158] S1006. The base station generates control information based on multiple channel status information sent by the terminal.

[0159] Specifically, the base station can identify the target channel state information that meets preset conditions among multiple received channel state information, and determine the beam direction of the smart metasurface reflection corresponding to the target channel state information as the target beam direction. Then, the base station generates control information based on the target beam direction.

[0160] S1007. The base station periodically sends control information to the smart metasurface.

[0161] S1008, the intelligent metasurface reflects the communication signals transmitted by the base station to the terminal according to the control information.

[0162] Specifically, the base station can reflect the communication signal transmitted by the base station to the terminal based on the target beam direction in the control information.

[0163] S702. When the service type of the communication signal transmission service is not the preset service type, the base station performs multiple periodic RRM measurements based on CSI-RS to obtain multiple channel state information.

[0164] Specifically, when the service type of the communication signal transmission service is not a preset service type, the base station can determine that the communication signal transmission service does not need to send channel state information to the base station in a timely manner based on changes in channel state or service requirements. Therefore, the base station can perform multiple periodic RRM measurements based on CSI-RS to obtain multiple channel state information.

[0165] For example, Figure 11 A periodic RRM measurement based on CSI-RS is shown. For example... Figure 11 As shown:

[0166] S1101. The base station configures CSI resources and CSI reports via RRC.

[0167] Specifically, when configuring CSI-RS resources for an SS burst, the base station provides both CSI-RS resources and a CSI-RS report for the SS burst. The CSI-RS resources are used to instruct the terminal to measure information such as RSRP and SINR of the CSI-RS. The CSI-RS report is used to instruct the terminal to send channel state information such as RSRP and SINR to the base station.

[0168] S1102. The base station periodically sends CSI-RS resources and CSI-RS reports to the terminal through the intelligent metasurface.

[0169] S1103. The terminal performs multiple measurements on the CSI-RS resources to obtain multiple channel state information.

[0170] S1104. The terminal periodically sends multiple channel status information measured by the terminal to the base station.

[0171] S1105. The base station generates control information based on multiple channel status information sent by the terminal.

[0172] Specifically, the base station can identify the target channel state information that meets preset conditions among multiple received channel state information, and determine the beam direction of the smart metasurface reflection corresponding to the target channel state information as the target beam direction. Then, the base station generates control information based on the target beam direction.

[0173] S1106. The base station periodically sends control information to the smart metasurface.

[0174] The period during which the base station sends control information is longer than the period during which the base station sends CSI-RS resources and CSI-RS reports to the terminal.

[0175] S1107, the intelligent metasurface reflects the communication signals transmitted by the base station to the terminal according to the control information.

[0176] Specifically, the base station can reflect the communication signal transmitted by the base station to the terminal based on the target beam direction in the control information.

[0177] The intelligent metasurface control method provided in this application embodiment can also be applied to… Figure 1 The intelligent metasurface 102 in the control system of the intelligent metasurface shown is as follows: Figure 12 As shown, the control method for intelligent metasurfaces provided in this application includes:

[0178] S1201, the intelligent metasurface receives control information through the control link.

[0179] The control link is a wireless transmission link between the base station and the smart metasurface based on the NR Uu interface protocol stack. Control information is used to instruct the smart metasurface to reflect the communication signals transmitted by the base station back to the terminal, according to the target beam direction determined by the base station.

[0180] Specifically, since the control link is a wireless transmission link between the smart metasurface and the base station used to transmit control information, the base station can send control information to the smart metasurface through the control link. Subsequently, the smart metasurface can receive control information through the control link.

[0181] S1202, the intelligent metasurface demodulates the control information to obtain the excitation signal corresponding to the control information.

[0182] Specifically, after receiving control information, the smart metasurface can demodulate the control information to obtain the target beam direction. Then, the smart metasurface can determine the codebook for controlling the smart metasurface based on the target beam direction, and generate an excitation signal for controlling the smart metasurface using the codebook.

[0183] S1203, the intelligent metasurface controls the reflection direction of the communication signal transmitted by the base station according to the excitation signal.

[0184] Specifically, after generating an excitation signal, the smart metasurface can control the reflection direction of the communication signal transmitted by the base station according to the excitation signal, so that the smart metasurface can reflect the communication signal transmitted by the base station to the target beam direction. In this way, the direction of the communication signal transmitted by the base station reflected by the smart metasurface is closer to the terminal, which can improve the transmission quality.

[0185] For example, such as Figure 13 As shown, Figure 13 Another structure for the control method of the smart metasurface is shown. The base station can send control information to the smart metasurface via a control link. Furthermore, the base station can send communication signals for service transmission with the terminal to the smart metasurface via a backhaul link. Additionally, the smart metasurface can reflect the communication signals transmitted by the base station via an access link.

[0186] The foregoing mainly describes the solutions provided by the embodiments of this application from a methodological perspective. To achieve the above functions, it includes corresponding hardware structures and / or software modules for executing each function. Those skilled in the art should readily recognize that, based on the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0187] This application embodiment can divide the control device for the intelligent metasurface into functional modules based on the above method example. For example, each function can be divided into its own functional module, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware or as a software functional module. Optionally, the module division in this application embodiment is illustrative and only represents one logical functional division; other division methods may be used in actual implementation.

[0188] like Figure 14 The diagram shown is a structural schematic of a control device for a smart metasurface provided in an embodiment of this application. This control device for the smart metasurface can be used to perform… Figures 5-7 A method for controlling the intelligent metasurface as shown in any one of the above. Figure 14 The control device for the intelligent metasurface shown includes: an acquisition unit 1401, a processing unit 1402, and a transmission unit 1403;

[0189] The acquisition unit 1401 is used to acquire multiple channel state information; the channel state information is used to represent the channel state of the communication signal reflected from the base station to the terminal through the smart metasurface. For example, combined with Figure 5 The acquisition unit 1401 is used to execute S501.

[0190] Processing unit 1402 is used to determine, among multiple channel state information, a target channel state information that meets preset conditions; the preset conditions include: the RSRP in the channel state information is greater than a preset RSRP, and / or, the SINR in the channel state information is greater than a preset SINR. For example, combined with Figure 5 The processing unit 1402 is used to execute S502.

[0191] The processing unit 1402 is further configured to determine the beam direction reflected by the smart metasurface corresponding to the target channel state information as the target beam direction. For example, combined with Figure 5 The processing unit 1402 is used to execute S503.

[0192] The transmitting unit 1403 is used to transmit control information to the smart metasurface; the control information is used to instruct the smart metasurface to reflect the communication signal transmitted by the base station to the terminal according to the target beam direction. For example, combined with Figure 5 The sending unit 1403 is used to execute S504.

[0193] Optionally, the acquisition unit 1401 is specifically used for:

[0194] When the terminal is in an idle state, multiple L1-RSRP measurements are performed based on the SSB to obtain multiple channel state information. For example, combined with Figure 6 The acquisition unit 1401 is used to execute S601.

[0195] Alternatively, when the terminal is in a connected state, multiple RRM measurements can be performed based on CSI-RS to obtain multiple channel state information. For example, combining... Figure 6 The acquisition unit 1401 is used to execute S602.

[0196] Optionally, the processing unit 1402 is specifically used for:

[0197] When the service type of the communication signal transmission service is a preset service type, multiple aperiodic RRM measurements are performed based on CSI-RS to obtain multiple channel state information. The preset service type includes uRLLC service. For example, combined with... Figure 7 The processing unit 1402 is used to execute S701.

[0198] Alternatively, when the service type of the communication signal transmission service is not a preset service type, multiple periodic RRM measurements are performed based on CSI-RS to obtain multiple channel state information. For example, combined with Figure 7 The processing unit 1402 is used to execute S702.

[0199] like Figure 15 The diagram shown is a structural schematic of a control device for a smart metasurface provided in an embodiment of this application. This control device for the smart metasurface can be used to perform… Figure 12 The method for controlling the intelligent metasurface is shown. Figure 15 The control device for the intelligent metasurface shown includes: a receiving unit 1501 and a processing unit 1502;

[0200] The receiving unit 1501 is used to receive control information through a control link; the control link is a wireless transmission link between the base station and the smart metasurface based on the NR Uu interface protocol stack; the control information is used to instruct the smart metasurface to reflect the communication signal transmitted by the base station to the terminal according to the target beam direction determined by the base station. For example, combined with Figure 12 The receiving unit 1501 is used to execute S1201.

[0201] Processing unit 1502 is used to demodulate the control information to obtain an excitation signal corresponding to the control information. For example, combined with... Figure 12 The processing unit 1502 is used to execute S1202.

[0202] The processing unit 1502 is also configured to control the reflection direction of the communication signal transmitted by the base station according to the excitation signal. For example, in combination with Figure 12 The processing unit 1502 is used to execute S1203.

[0203] This application also provides a computer-readable storage medium, which includes computer-executable instructions. When the computer-executable instructions are executed on the computer, the computer performs the control method for the smart metasurface provided in the above embodiments.

[0204] This application also provides a computer program that can be directly loaded into a memory and contains software code. After being loaded and executed by a computer, the computer program can realize the intelligent metasurface control method provided in the above embodiments.

[0205] Those skilled in the art will recognize that, in one or more of the examples above, the functions described in this application can be implemented using hardware, software, firmware, or any combination thereof. When implemented in software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media include computer-readable storage media and communication media, wherein communication media include any medium that facilitates the transmission of a computer program from one place to another. Storage media can be any available medium accessible to a general-purpose or special-purpose computer.

[0206] Through the above description of the embodiments, those skilled in the art can clearly understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0207] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules or units is only a logical functional division, and other division methods may exist in actual implementation. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms. Units described as separate components may or may not be physically separate; components shown as units may be one physical unit or multiple physical units, i.e., they may be located in one place or distributed in multiple different places. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0208] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiments of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This software product is stored in a storage medium and includes several instructions to cause a device (which may be a microcontroller, chip, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0209] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for controlling an intelligent metasurface, characterized in that, include: Obtain multiple channel status information; The channel state information is used to represent the channel state of the communication signal reflected from the base station to the terminal through the smart metasurface; wherein, when the radio resource control state between the terminal and the base station is connected and the service type of the transmission service of the communication signal between the base station and the terminal is a preset service type, the multiple channel state information are obtained by performing multiple non-periodic radio resource management (RRM) measurements based on CSI-RS; the preset service type includes: ultra-low latency high reliability communication (uRLLC) service; Determine the target channel state information that meets preset conditions among the plurality of channel state information; the preset conditions include: the reference signal received power RSRP in the channel state information is greater than a preset RSRP, and / or, the signal-to-interference-plus-noise ratio SINR in the channel state information is greater than a preset SINR; The beam direction reflected by the smart metasurface corresponding to the target channel state information is determined as the target beam direction; Control information is sent to the smart metasurface; the control information is used to instruct the smart metasurface to reflect the communication signal transmitted by the base station to the terminal according to the target beam direction.

2. The control method for the intelligent metasurface according to claim 1, characterized in that, When the radio resource control state between the terminal and the base station is idle, the multiple channel state information is obtained by performing multiple Layer 1 Reference Signal Received Power (L1-RSRP) measurements based on the Synchronization Signal Block (SSB).

3. The control method for the intelligent metasurface according to claim 2, characterized in that, When the radio resource control state between the terminal and the base station is in a connected state and the service type of the transmission service of the communication signal between the base station and the terminal is not the preset service type, the multiple channel state information is obtained by performing multiple periodic RRM measurements based on the CSI-RS.

4. A method for controlling an intelligent metasurface, characterized in that, include: Receive control information via the control link; The control link is a wireless transmission link between the base station and the smart metasurface based on the New Radio (NR) Uu interface protocol stack. The control information is used to instruct the smart metasurface to reflect the communication signal transmitted by the base station to the terminal according to the target beam direction determined by the base station; The target beam direction is the beam direction reflected by the smart metasurface corresponding to the target channel state information; the target channel state information is the channel state information that meets preset conditions among multiple channel state information between the base station and the terminal. The channel state information is used to represent the channel state of the communication signal reflected from the base station to the terminal through the smart metasurface; The preset conditions include: the Reference Signal Received Power (RSRP) in the channel state information is greater than a preset RSRP, and / or the Signal-to-Interference-plus-Noise Ratio (SINR) in the channel state information is greater than a preset SINR; the multiple channel state information are multiple channel state information between the base station and the terminal; when the radio resource control state between the terminal and the base station is connected and the service type of the transmission service of the communication signal between the base station and the terminal is a preset service type, the multiple channel state information are obtained by performing multiple non-periodic radio resource management (RRM) measurements based on CSI-RS; the preset service type includes: Ultra-Reliable Low-Latency Communication (uRLLC) service; The control information is demodulated to obtain the excitation signal corresponding to the control information; The reflection direction of the communication signal transmitted by the base station is controlled according to the excitation signal.

5. A control device for an intelligent metasurface, characterized in that, include: Acquisition unit, processing unit, and transmission unit; The acquisition unit is used to acquire multiple channel state information; The channel state information is used to represent the channel state of the communication signal reflected from the base station to the terminal through the smart metasurface; wherein, when the radio resource control state between the terminal and the base station is connected and the service type of the transmission service of the communication signal between the base station and the terminal is a preset service type, the multiple channel state information are obtained by performing multiple non-periodic radio resource management (RRM) measurements based on CSI-RS; the preset service type includes: ultra-low latency high reliability communication (uRLLC) service; The processing unit is used to determine, among the plurality of channel state information, a target channel state information that meets preset conditions; the preset conditions include: the reference signal received power (RSRP) in the channel state information is greater than a preset RSRP, and / or, the signal-to-interference-plus-noise ratio (SINR) in the channel state information is greater than a preset SINR. The processing unit is further configured to determine the beam direction reflected by the smart metasurface corresponding to the target channel state information as the target beam direction; The transmitting unit is used to send control information to the smart metasurface; the control information is used to instruct the smart metasurface to reflect the communication signal transmitted by the base station to the terminal according to the target beam direction.

6. The control device for the intelligent metasurface according to claim 5, characterized in that, When the radio resource control state between the terminal and the base station is idle, the multiple channel state information is obtained by performing multiple Layer 1 Reference Signal Received Power (L1-RSRP) measurements based on the Synchronization Signal Block (SSB).

7. The control device for the intelligent metasurface according to claim 6, characterized in that, When the radio resource control state between the terminal and the base station is in a connected state and the service type of the transmission service of the communication signal between the base station and the terminal is not a preset service type, the multiple channel state information is obtained by performing multiple periodic RRM measurements based on the CSI-RS.

8. A control device for an intelligent metasurface, characterized in that, include: Receiving unit and processing unit; The receiving unit is used to receive control information through the control link; The control link is a wireless transmission link between the base station and the smart metasurface based on the New Radio (NR) Uu interface protocol stack; the control information is used to instruct the smart metasurface to reflect the communication signal transmitted by the base station to the terminal according to the target beam direction determined by the base station. The target beam direction is the beam direction reflected by the smart metasurface corresponding to the target channel state information; the target channel state information is the channel state information that meets preset conditions among multiple channel state information between the base station and the terminal. The channel state information is used to represent the channel state of the communication signal reflected from the base station to the terminal through the smart metasurface; The preset conditions include: the Reference Signal Received Power (RSRP) in the channel state information is greater than a preset RSRP, and / or the Signal-to-Interference-plus-Noise Ratio (SINR) in the channel state information is greater than a preset SINR; the multiple channel state information are multiple channel state information between the base station and the terminal; when the radio resource control state between the terminal and the base station is connected and the service type of the transmission service of the communication signal between the base station and the terminal is a preset service type, the multiple channel state information are obtained by performing multiple non-periodic radio resource management (RRM) measurements based on CSI-RS; the preset service type includes: Ultra-Reliable Low-Latency Communication (uRLLC) service; The processing unit is used to demodulate the control information to obtain an excitation signal corresponding to the control information; The processing unit is further configured to control the reflection direction of the communication signal transmitted by the base station according to the excitation signal.

9. A control device for an intelligent metasurface, characterized in that, It includes a memory and a processor; the memory is used to store computer execution instructions, and the processor is connected to the memory via a bus; when the control device of the smart metasurface is running, the processor executes the computer execution instructions stored in the memory, so that the control device of the smart metasurface performs the control method of the smart metasurface as described in any one of claims 1-3.

10. A smart metasurface, characterized in that, include: Control module and forwarding module; The control module includes a communication module and a wave control network; the forwarding module includes a passive intelligent metasurface array. The communication module is used to receive control information through a control link and demodulate the control information to obtain an excitation signal corresponding to the control information; the control link is a new radio (NR) based communication between the base station and the smart metasurface. The wireless transmission link of the Uu interface protocol stack; the control information is used to instruct the smart metasurface to reflect the communication signal transmitted by the base station to the terminal according to the target beam direction determined by the base station; the target beam direction is the beam direction reflected by the smart metasurface corresponding to the target channel state information; the target channel state information is the channel state information that meets preset conditions among multiple channel state information between the base station and the terminal; the channel state information is used to represent the channel state of the communication signal reflected by the base station to the terminal through the smart metasurface; the preset conditions include: the reference signal received power RSRP in the channel state information is greater than the preset RSRP, and / or, the signal-to-interference-plus-noise ratio SINR in the channel state information is greater than the preset SINR; the multiple channel state information are multiple channel state information between the base station and the terminal; when the radio resource control state between the terminal and the base station is connected and the service type of the transmission service of the communication signal between the base station and the terminal is a preset service type, the multiple channel state information is obtained by multiple non-periodic radio resource management RRM measurements based on CSI-RS; the preset service type includes: low latency high reliability communication uRLLC service. The communication module is also used to send the excitation signal to the wave control network; The wave control network is used to receive the excitation signal and control the reflection direction of the communication signal by the passive intelligent metasurface array according to the excitation signal.

11. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes computer-executable instructions that, when executed on a computer, cause the computer to perform the control method for the smart metasurface as described in any one of claims 1-3 or claim 4.

Images