Method and apparatus for controlling smart metasurface

Abstract

The application provides a control method and device of an intelligent metasurface, wherein the control method of the intelligent metasurface is applied to an intelligent metasurface RIS, and the method comprises the following steps: receiving first information sent by a first device through a physical downlink control channel PDCCH; wherein the first information is used for indicating an acquisition mode of second information; the second information is used for indicating first configuration information of each array in the RIS; the first configuration information is used for indicating a configuration of the RIS with a performance higher than a performance lower limit of the RIS; acquiring the second information sent by the first device through a physical downlink shared channel PDSCH according to the first information; and configuring each array in the RIS according to the second information. The application embodiment can realize more effective control of the RIS and improve the communication quality.

Description

Control method and device of intelligent metasurface Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a control method and device for an intelligent metasurface. Background Art

[0002] Reconfigurable intelligence surface (RIS), also known as "reconfigurable intelligent surface" or "intelligent reflective surface", can reflect or refract radio frequency (RF) energy around obstacles. Therefore, it can be flexibly deployed in wireless communication propagation environments to create a line of sight (LoS) wireless transmission path, that is, a wireless channel, between the source and the target.

[0003] In related technologies, a RIS comprises multiple arrays. A signal source, such as a gNB (5G base station), can control the frequency, phase, and polarization characteristics of electromagnetic waves reflected or refracted by the RIS by indicating configuration information such as the phase weights and the number of arrays to be activated, thereby reshaping the wireless channel for data transmission. Communication between the signal source and the RIS occurs over the air interface. Based on this, the signal source indicates configuration information to control the RIS to adjust the array configuration. For example, the base station indicates the phase weights of each array in the RIS via downlink control information (DCI).

[0004] However, the length of a DCI is limited, typically only 7 bits, which can support the control of a RIS consisting of 128 elements. In specific applications, large-scale RIS arrays, such as those consisting of 1024 or more elements, are widely used to achieve gains such as higher spectral efficiency (SE). Therefore, controlling the RIS array using DCI can easily lead to insufficient indication information to control the elements, resulting in reduced spectral efficiency and degraded communication quality.

[0005] Summary of the Invention

[0006] The embodiments of the present application provide a method and device for controlling an intelligent metasurface, which can hierarchically send configuration information of a RIS, thereby achieving more effective control of the RIS and improving communication quality.

[0007] In a first aspect, an embodiment of the present application provides a control method for an intelligent metasurface, which is applied to an intelligent metasurface RIS, the method comprising: receiving first information sent by a first device via a physical downlink control channel PDCCH; wherein the first information is used to indicate a method for obtaining second information; the second information is used to indicate first configuration information of each array in the RIS; the first configuration information is used to indicate a configuration of the RIS having performance higher than a performance lower bound of the RIS; based on the first information, obtaining second information sent by the first device via a physical downlink shared channel PDSCH; and configuring each array in the RIS based on the second information.

[0008] In this embodiment of the present application, a first device transmits information controlling the intelligent metasurface (RIS) in two separate levels: first information and second information. The second information, which indicates the specific configuration of each array in the RIS, is transmitted via the physical downlink shared channel (PDSCH). This information is equivalent to service data and is not subject to the length restrictions of the DCI. Based on this, the RIS can obtain the second information from the first information and then adjust the configuration of its arrays based on the second information. This allows the first device to control the RIS without being restricted by RIS specifications, achieving effective control of the RIS and improving communication quality.

[0009] According to the first aspect, the first information is also used to indicate that RIS is prohibited from feeding back response information corresponding to the second information; after receiving the first information sent by the first device through the physical downlink control channel PDCCH, the method also includes: disabling the target process according to the first information, wherein the target process is used to feed back response information.

[0010] In the embodiment of the present application, by disabling the target process, the problem of inconsistent timing between different users caused by feedback response information in a multi-user situation can be avoided, thereby further improving the communication quality.

[0011] According to the first aspect, or any implementation of the first aspect above, the first information is further used to indicate second configuration information, and the second configuration information is used to indicate the configuration of the RIS with performance being the lower performance limit; after obtaining second information sent by the first device through the physical downlink shared channel PDSCH according to the first information, the method further includes: in a case where obtaining the second information fails, configuring each array in the RIS according to the second configuration information indicated by the first information.

[0012] In the embodiment of the present application, when the acquisition of the second information fails, the configuration of each array in the RIS is directly performed according to the first information, thereby ensuring the communication through the configuration that can achieve the performance lower bound, and further improving the communication quality.

[0013] According to the first aspect, or any implementation of the first aspect above, the first configuration information includes the phase weight of the array in the RIS; and / or, when the RIS is an array-enabled controllable hybrid reflective adjustable smart metasurface HRRIS, the first configuration information includes: a topological map of the array in the HRRIS.

[0014] In the embodiment of the present application, the first configuration information may include the phase weights of the arrays in the RIS and / or the topology of the arrays in the HRRIS, thereby expanding the adaptation scenarios and further improving the communication quality.

[0015] According to the first aspect, or any implementation manner of the first aspect above, the first information is further used to indicate second configuration information, where the second configuration information is used to indicate that the performance of the RIS is configured as a lower performance bound; the first configuration information includes first sub-configuration information obtained based on the second configuration information, and the time domain resources and frequency domain resources occupied by the first sub-configuration information are lower than those of the first configuration information; configuring each array in the RIS based on the second information includes: determining the first configuration information based on the first sub-configuration information and the second configuration information when the second information is successfully obtained; and configuring each array in the RIS based on the first configuration information.

[0016] In the embodiment of the present application, each phase in the RIS is configured in a corresponding manner according to the situation where the second information is successfully obtained, and the situations where the first information and the second information are different, to ensure successful configuration and improve communication quality.

[0017] According to the first aspect, or any implementation manner of the first aspect above, when the second configuration information includes a codebook, the first sub-configuration information includes a residual of a phase weight of an array in the RIS; when the second configuration information includes a first sub-topology map of an array in the RIS, the first sub-configuration information includes a second sub-topology map of the array in the RIS; the first sub-topology map and the second sub-topology map are topology maps obtained by dividing an overall topology map of the array in the RIS, and the overall topology map is used to indicate the activation of the array in the RIS.

[0018] In the embodiment of the present application, different first sub-configuration information is set for different second configuration information, so as to ensure accurate acquisition and effective transmission of configuration information and improve communication quality.

[0019] According to the first aspect, or any implementation of the first aspect above, the acquisition method includes position information and / or decoding method of the second information in the PDSCH.

[0020] In the embodiment of the present application, the second information can be obtained through the position information of the second information in the PDSCH and / or the decoding method, thereby ensuring the improvement of communication quality.

[0021] In a second aspect, an embodiment of the present application provides a method for controlling an intelligent metasurface, which is applied to a first device, and the method includes:

[0022] First information is sent to the intelligent metasurface RIS via a physical downlink control channel PDCCH, wherein the first information is used to indicate a method for obtaining second information; the second information is used to indicate first configuration information of each array in the RIS; the first configuration information is used to indicate a configuration of the RIS having performance higher than a performance lower bound of the RIS; and second information is sent to the RIS via a physical downlink shared channel PDSCH to instruct the RIS to configure each array in the RIS according to the second information.

[0023] According to the second aspect, the first information is further used to indicate that the RIS is prohibited from feeding back response information corresponding to the second information.

[0024] According to the second aspect, or any implementation of the second aspect above, the first information is further used to indicate second configuration information, and the second configuration information is used to indicate the configuration of the RIS with a performance lower bound.

[0025] According to the second aspect, or any implementation of the second aspect above, the first configuration information includes the phase weight of the array in the RIS; and / or, when the RIS is an array-enabled controllable hybrid reflective adjustable smart metasurface HRRIS, the first configuration information includes: a topological map of the array in the HRRIS.

[0026] According to the second aspect, or any implementation manner of the above second aspect, the first information is also used to indicate second configuration information, and the second configuration information is used to indicate that the performance of the RIS is configured as the performance lower bound; the first configuration information includes first sub-configuration information obtained based on the second configuration information, and the time domain resources and frequency domain resources occupied by the first sub-configuration information are lower than the first configuration information. The first sub-configuration information is used by the RIS to determine the first configuration information based on the first sub-configuration information and the second configuration information.

[0027] According to the second aspect, or any implementation of the second aspect above, when the second configuration information includes a codebook, the first sub-configuration information includes a residual of a phase weight of an array in the RIS; when the second configuration information includes a first sub-topology map of an array in the RIS, the first sub-configuration information includes a second sub-topology map of the array in the RIS; the first sub-topology map and the second sub-topology map are topology maps obtained by dividing the overall topology map of the array in the RIS, and the overall topology map is used to indicate the activation of the array in the RIS.

[0028] According to the second aspect, or any implementation of the second aspect above, the acquisition method includes position information and / or decoding method of the second information in the PDSCH.

[0029] The second aspect and any implementation of the second aspect correspond to the first aspect and any implementation of the first aspect, respectively. The technical effects corresponding to the second aspect and any implementation of the second aspect can be referred to the technical effects corresponding to the first aspect and any implementation of the first aspect, and will not be repeated here.

[0030] In a third aspect, an embodiment of the present application provides a control method for an intelligent metasurface, which is applied to a wireless communication system, the system including a first device and an intelligent metasurface RIS, the method including: the first device is used to send first information to the RIS through a physical downlink control channel PDCCH; and send second information to the RIS through a physical downlink shared channel PDSCH; wherein the first information is used to indicate a method for obtaining the second information; the second information is used to indicate first configuration information of each array in the RIS; the first configuration information is used to indicate a configuration of the RIS with performance higher than a performance lower bound of the RIS; the RIS is used to receive the first information; according to the first information, obtain the second information sent by the first device through the physical downlink shared channel PDSCH; and according to the second information, configure each array in the RIS.

[0031] According to the third aspect, the first information is also used to indicate that RIS is prohibited from feeding back response information corresponding to the second information; RIS is also used to: after receiving the first information sent by the first device through the physical downlink control channel PDCCH, disable the target process according to the first information, wherein the target process is used to feed back response information.

[0032] According to the third aspect, or any implementation of the third aspect above, the first information is further used to indicate second configuration information, and the second configuration information is used to indicate the configuration of the RIS with a performance lower bound;

[0033] The RIS is further configured to: if the acquisition of the second information fails, configure each phase in the RIS according to the second configuration information indicated by the first information.

[0034] According to the third aspect, or any implementation of the third aspect above, the first configuration information includes the phase weight of the array in the RIS; and / or, when the RIS is an array-enabled controllable hybrid reflective adjustable smart metasurface HRRIS, the first configuration information includes: a topological map of the array in the HRRIS.

[0035] According to the third aspect, or any implementation of the third aspect above, the first information is further used to indicate second configuration information, and the second configuration information is used to indicate that the performance of the RIS is configured as a performance lower bound; the first configuration information includes first sub-configuration information obtained based on the second configuration information, and the time domain resources and frequency domain resources occupied by the first sub-configuration information are lower than those of the first configuration information; the RIS is specifically used to: when the second information is successfully obtained, determine the first configuration information based on the first sub-configuration information and the second configuration information; and configure each array in the RIS according to the first configuration information.

[0036] According to the third aspect, or any implementation of the third aspect above, when the second configuration information includes a codebook, the first sub-configuration information includes a residual of a phase weight of an array in the RIS; when the second configuration information includes a first sub-topology map of an array in the RIS, the first sub-configuration information includes a second sub-topology map of the array in the RIS; the first sub-topology map and the second sub-topology map are topology maps obtained by dividing the overall topology map of the array in the RIS, and the overall topology map is used to indicate the activation of the array in the RIS.

[0037] According to the third aspect, or any implementation of the third aspect above, the acquisition method includes the position information and / or decoding method of the second information in the PDSCH. The third aspect and any implementation of the third aspect correspond to the first aspect and any implementation of the first aspect, respectively. The technical effects corresponding to the third aspect and any implementation of the third aspect can be referred to the technical effects corresponding to the first aspect and any implementation of the first aspect above, and will not be repeated here.

[0038] In a fourth aspect, an embodiment of the present application provides a control device for an intelligent metasurface, which is applied to an intelligent metasurface RIS, and the device includes: an information transceiver module, which is used to receive first information sent by a first device through a physical downlink control channel PDCCH; wherein the first information is used to indicate a method for obtaining the second information; the second information is used to indicate first configuration information of each array in the RIS; the first configuration information is used to indicate a configuration of a RIS with performance higher than a performance lower bound of the RIS; an information processing module, which is used to obtain, based on the first information, the second information sent by the first device through a physical downlink shared channel PDSCH; and an array configuration module, which is used to configure each array in the RIS based on the second information.

[0039] According to the fourth aspect, the first information is also used to indicate that RIS is prohibited from feeding back response information corresponding to the second information; the information transceiver module is also used to: after receiving the first information sent by the first device through the physical downlink control channel PDCCH, disable the target process according to the first information, wherein the target process is used to feed back response information.

[0040] According to the fourth aspect, or any implementation of the fourth aspect, the first information is further used to indicate second configuration information, where the second configuration information is used to indicate the configuration of a RIS with a performance lower bound; and the array configuration module is further used to configure each array in the RIS according to the second configuration information indicated by the first information if obtaining the second information fails.

[0041] According to the fourth aspect, or any implementation of the fourth aspect above, the first configuration information includes the phase weight of the array in the RIS; and / or, when the RIS is an array-enabled controllable hybrid reflective adjustable smart metasurface HRRIS, the first configuration information includes: a topological map of the array in the HRRIS.

[0042] According to the fourth aspect, or any implementation of the fourth aspect above, the first information is further used to indicate second configuration information, and the second configuration information is used to indicate that the performance of the RIS is configured as a performance lower bound; the first configuration information includes first sub-configuration information obtained based on the second configuration information, and the time domain resources and frequency domain resources occupied by the first sub-configuration information are lower than those of the first configuration information; the array configuration module is specifically used to: when the second information is successfully obtained, determine the first configuration information based on the first sub-configuration information and the second configuration information; and configure each array in the RIS according to the first configuration information.

[0043] According to the fourth aspect, or any implementation of the fourth aspect above, when the second configuration information includes a codebook, the first sub-configuration information includes a residual of a phase weight of an array in the RIS; when the second configuration information includes a first sub-topology map of an array in the RIS, the first sub-configuration information includes a second sub-topology map of the array in the RIS; the first sub-topology map and the second sub-topology map are topology maps obtained by dividing the overall topology map of the array in the RIS, and the overall topology map is used to indicate the activation of the array in the RIS.

[0044] According to the fourth aspect, or any implementation of the fourth aspect above, the acquisition method includes the position information and / or decoding method of the second information in the PDSCH.

[0045] The fourth aspect and any implementation of the fourth aspect correspond to the first aspect and any implementation of the first aspect, respectively. The technical effects corresponding to the fourth aspect and any implementation of the fourth aspect can be referred to the technical effects corresponding to the first aspect and any implementation of the first aspect, and will not be repeated here.

[0046] In a fifth aspect, an embodiment of the present application provides a control device for an intelligent metasurface, applied to a first device, the device comprising:

[0047] The first sending module is used to send first information to the intelligent metasurface RIS through a physical downlink control channel PDCCH, wherein the first information is used to indicate a method for obtaining second information; the second information is used to indicate first configuration information of each array in the RIS; the first configuration information is used to indicate a configuration of the RIS with performance higher than a performance lower bound of the RIS; and the second sending module is used to send second information to the RIS through a physical downlink shared channel PDSCH to instruct the RIS to configure each array in the RIS according to the second information.

[0048] According to the fifth aspect, the first information is further used to indicate that the RIS is prohibited from feeding back response information corresponding to the second information.

[0049] According to the fifth aspect, or any implementation of the fifth aspect, the first information is further used to indicate second configuration information, and the second configuration information is used to indicate the configuration of the RIS with a performance lower bound.

[0050] According to the fifth aspect, or any implementation of the fifth aspect above, the first configuration information includes the phase weight of the array in the RIS; and / or, when the RIS is an array-enabled controllable hybrid reflective adjustable smart metasurface HRRIS, the first configuration information includes: a topological map of the array in the HRRIS.

[0051] According to the fifth aspect, or any implementation manner of the fifth aspect above, the first information is also used to indicate the second configuration information, and the second configuration information is used to indicate that the performance of the RIS is configured as the performance lower bound; the first configuration information includes first sub-configuration information obtained based on the second configuration information, and the time domain resources and frequency domain resources occupied by the first sub-configuration information are lower than the first configuration information, and the first sub-configuration information is used by the RIS to determine the first configuration information based on the first sub-configuration information and the second configuration information.

[0052] According to the fifth aspect, or any implementation of the fifth aspect above, when the second configuration information includes a codebook, the first sub-configuration information includes the residual of the phase weight of the array in the RIS; when the second configuration information includes a first sub-topology map of the array in the RIS, the first sub-configuration information includes a second sub-topology map of the array in the RIS; the first sub-topology map and the second sub-topology map are topology maps obtained by dividing the total topology map of the array in the RIS, and the total topology map is used to indicate the activation of the array in the RIS.

[0053] According to the fifth aspect, or any implementation of the fifth aspect above, the acquisition method includes the position information and / or decoding method of the second information in the PDSCH.

[0054] The fifth aspect and any implementation of the fifth aspect correspond to the first aspect and any implementation of the first aspect, respectively. The technical effects corresponding to the fifth aspect and any implementation of the fifth aspect can be referred to the technical effects corresponding to the first aspect and any implementation of the first aspect, and will not be repeated here.

[0055] In a sixth aspect, an embodiment of the present application provides a wireless communication system, the system comprising a first device and an intelligent metasurface RIS;

[0056] A first device is configured to send first information to a RIS via a physical downlink control channel (PDCCH); and send second information to the RIS via a physical downlink shared channel (PDSCH); wherein the first information is configured to indicate a method for obtaining the second information; the second information is configured to indicate first configuration information of each array in the RIS; the first configuration information is configured to indicate a configuration of the RIS having performance higher than a lower performance limit of the RIS; the RIS is configured to receive the first information; obtain second information sent by the first device via the physical downlink shared channel (PDSCH) based on the first information; and configure each array in the RIS based on the second information.

[0057] According to the sixth aspect, the first information is also used to indicate that RIS is prohibited from feeding back response information corresponding to the second information; RIS is also used to: after receiving the first information sent by the first device through the physical downlink control channel PDCCH, disable the target process according to the first information, wherein the target process is used to feed back response information.

[0058] According to the sixth aspect, or any implementation of the sixth aspect, the first information is further used to indicate second configuration information, and the second configuration information is used to indicate the configuration of the RIS with performance being the lower performance limit; and the RIS is further used to: in the event of a failure to obtain the second information, configure each array in the RIS according to the second configuration information indicated by the first information.

[0059] According to the sixth aspect, or any implementation of the sixth aspect above, the first configuration information includes the phase weight of the array in the RIS; and / or, when the RIS is an array-enabled controllable hybrid reflective adjustable smart metasurface HRRIS, the first configuration information includes: a topological map of the array in the HRRIS.

[0060] According to the sixth aspect, or any implementation manner of the sixth aspect above, the first information is further used to indicate second configuration information, and the second configuration information is used to indicate that the performance of the RIS is configured as a performance lower bound; the first configuration information includes first sub-configuration information obtained based on the second configuration information, and the time domain resources and frequency domain resources occupied by the first sub-configuration information are lower than those of the first configuration information; the RIS is specifically used to: when the second information is successfully obtained, determine the first configuration information based on the first sub-configuration information and the second configuration information; and configure each array in the RIS according to the first configuration information.

[0061] According to the sixth aspect, or any implementation of the sixth aspect above, when the second configuration information includes a codebook, the first sub-configuration information includes the residual of the phase weight of the array in the RIS; when the second configuration information includes a first sub-topology map of the array in the RIS, the first sub-configuration information includes a second sub-topology map of the array in the RIS; the first sub-topology map and the second sub-topology map are topology maps obtained by dividing the total topology map of the array in the RIS, and the total topology map is used to indicate the activation of the array in the RIS.

[0062] According to the sixth aspect, or any implementation of the sixth aspect above, the acquisition method includes the position information and / or decoding method of the second information in the PDSCH.

[0063] The sixth aspect and any implementation of the sixth aspect correspond to the first aspect and any implementation of the first aspect, respectively. The technical effects corresponding to the sixth aspect and any implementation of the sixth aspect can be referred to the technical effects corresponding to the first aspect and any implementation of the first aspect, and will not be repeated here.

[0064] In the seventh aspect, an embodiment of the present application provides an electronic device, comprising: a processor and a memory; the processor and the memory are connected; the memory is used to store one or more programs; when the one or more programs are executed by one or more processors, the one or more processors implement a method as in any one of the first to third aspects and any one of the implementation methods of the first to third aspects.

[0065] In an eighth aspect, an embodiment of the present application provides a computer-readable medium for storing a computer program, wherein the computer program includes instructions for executing the method in any possible implementation of the first to third aspects or the first to third aspects.

[0066] In a ninth aspect, an embodiment of the present application provides a computer program comprising instructions for executing the method of the first to third aspects or any possible implementation of the first to third aspects.

[0067] In a tenth aspect, an embodiment of the present application provides a chip comprising a processing circuit and a transceiver pin. The transceiver pin and the processing circuit communicate with each other via an internal connection path, and the processing circuit executes the method of aspects 1 to 3 or any possible implementation of aspects 1 to 3 to control the receive pin to receive a signal and control the transmit pin to send a signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] Figure 1 is an example diagram of how RIS works;

[0069] Figure 2 is a schematic diagram of the average spectral efficiency of the RIS array under different phase weights;

[0070] FIG3 is a structural diagram of a communication system provided in an embodiment of the present application;

[0071] FIG4 is a structural diagram of an RIS provided in an embodiment of the present application;

[0072] FIG5 is a structural diagram of an example of a signal source provided in an embodiment of the present application;

[0073] FIG6 is a flow chart of a method for controlling a smart metasurface provided in an embodiment of the present application;

[0074] FIG7 is an example diagram of an indication method of RIS configuration information provided in an embodiment of the present application;

[0075] FIG8 is one of the exemplary contents of RIS configuration information provided in an embodiment of the present application;

[0076] FIG. 9 is one of example diagrams of the content of RIS configuration information provided in an embodiment of the present application. DETAILED DESCRIPTION

[0077] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions in this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0078] The terms "first", "second", etc. in the specification, embodiments, claims, and drawings of this application are only used for the purpose of distinguishing descriptions and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying an order. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one (item)" means one or more, and "multiple" means two or more. "Installation", "connection", "connected", etc. should be understood in a broad sense, for example, it can be an electrical connection or a mechanical connection; it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection between two elements. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, including a series of steps or units. Methods, systems, products, or devices are not necessarily limited to the steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to the processes, methods, products, or devices. "Up," "down," "left," "right," etc. are used only with respect to the orientation of components in the drawings. These directional terms are relative concepts and are used for relative description and clarification. They may change accordingly depending on the orientation of the components in the drawings.

[0079] It should be understood that in this application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0080] To facilitate understanding of the embodiments of the present application, some background technologies involved in the embodiments of the present application are first introduced:

[0081] Figure 1 illustrates the operation of a RIS. As shown in Figure 1, a new type of network device can be installed on large surfaces (such as indoor walls or ceilings, or outdoor buildings or signs). Compared to direct connections without RIS, RIS bypasses obstacles by reflecting radio frequency (RF) energy around them, creating a virtual line-of-sight (LoS) path between the communication source and destination. In specific applications, the direction of the reflected beam can be altered by changing the phase weights of one or more RIS elements. Since the RIS is not connected to the gNB (5G base station), it requires the gNB to indicate its element configuration, such as phase adjustment, over the air interface. For example, there are two possible ways to indicate this: the first is to indicate the codebook corresponding to the RIS beam, which is indicated within a predefined beam and has low overhead. The second is to indicate the RIS element weights, that is, the phase weights for each RIS element. However, due to the large number of RIS elements, this incurs high overhead.

[0082] In related technologies, NCR (Network Controlled Repeater), similar to RIS, uses beam indication and time-bound DCI (Downlink Control Information) to control the NCR's beam. For example, the DCI may include indicate: {beam1, time slot1}, ..., {beam xx, time slot xx}, i.e., the beam indication indicates that the transmission period of beam beam1 is time slot1, ..., and the transmission period of beam beam xx is time slot xx. DL (Downlink) reflection, UL (Uplink) reflection. Due to the limited length of DCI, which is only 7 bits, the existing NCR standard only supports DCI indications for 128 beams for beam control.

[0083] For example, Figure 2 illustrates the average spectral efficiency of a RIS under different phase weights. As shown in Figure 2, the existing configuration instructions for 128 beams may be sufficient for a small RIS array. However, as the RIS array grows, the beam configuration instructions may not be sufficient, and the performance gain deteriorates. Specifically, the average spectral efficiency of the RIS is highest when using ideal RIS array weights (such as the phase weights obtained by the KR algorithm), followed by 1024 beams. When using 128 beams, the RIS gain is only 5%. This indicates that the existing codebook-based indication mechanism is limited by PDCCH (physical downlink control channel) resources, resulting in significant performance loss. This means that using the PDCCH to control the RIS suffers from significant performance loss, ineffective control, and poor communication quality. MIMO (Multiple-Input Multiple-Output) refers to the technology used in wireless communications to transmit and receive signals using multiple antennas. The KR (Kruskal) algorithm is a greedy algorithm used to find the optimal solution. Spectral efficiency (SE), also known as system capacity or frequency band utilization, measures system effectiveness and describes the capacity it can provide. It is defined as the effective information rate (R) transmitted by the communication channel bandwidth (B). This refers to the number of bits that can be transmitted per second per unit bandwidth. It represents the system's efficient use of spectrum resources and is measured in bits / s / Hz.

[0084] Therefore, how to achieve more effective control of RIS to improve spectrum efficiency and thus improve communication quality is an urgent problem to be solved.

[0085] In this embodiment of the present application, a first device transmits information controlling the intelligent metasurface (RIS) in two separate levels: first information and second information. The second information, which indicates the specific configuration of each array in the RIS, is transmitted via the physical downlink shared channel (PDSCH). This information is equivalent to service data and is not subject to the length restrictions of the DCI. Based on this, the RIS can obtain the second information from the first information and then adjust the configuration of its arrays based on the second information. This allows the first device to control the RIS without being restricted by RIS specifications, achieving effective control of the RIS and improving communication quality.

[0086] Before describing the technical solutions of the embodiments of the present application, the operating platform of the control method of the intelligent metasurface of the embodiments of the present application will be described in conjunction with the accompanying drawings. Figure 3 is a structural example diagram of a communication system provided by the embodiments of the present application. As shown in Figure 3, the embodiments of the present application can be applied to wireless communication systems such as 5G and satellite communication. The first device is a device that can control RIS in the wireless communication system, such as a base station or other central node network device for MAC layer resource scheduling. The system architecture is shown in Figure 3. The wireless communication system is usually composed of cells, each cell contains a base station (BS), and the base station provides communication services to multiple mobile stations (MS). Among them, the base station includes a BBU (baseband unit) and an RRU (remote radio unit). The BBU and RRU can be placed in different places, for example: the RRU is remote and placed in an area with high traffic volume, and the BBU is placed in a central computer room. The BBU and RRU can also be placed in the same computer room. The BBU and RRU can also be different components under the same rack.

[0087] It should be noted that the wireless communication systems mentioned in the embodiments of the present application include but are not limited to: narrowband Internet of Things (NB-IoT) systems, global system for mobile communications (GSM), enhanced data rate for GSM evolution (EDGE), wideband code division multiple access (WCDMA), code division multiple access 2000 (CDMA2000), time division-synchronization code division multiple access (TD-SCDMA), long term evolution (LTE), and the three major application scenarios of the next generation 5G mobile communication system, eMBB, URLLC and eMTC.

[0088] In the embodiments of the present application, a base station is a device deployed in a wireless access network to provide wireless communication functions for an MS. The base station may include various forms of macro base stations, micro base stations (also known as small stations), relay stations, access points, etc. In systems using different wireless access technologies, the names of devices with base station functions may be different. For example, in an LTE system, it is called an evolved Node B (eNB or eNodeB), and in a third generation (3G) system, it is called a Node B, etc. For the convenience of description, in all embodiments of the present application, the above-mentioned devices that provide wireless communication functions for an MS are collectively referred to as network devices or base stations or BSs. In the present invention, a base station may also be referred to as a base station device.

[0089] Still referring to FIG3 , the MS involved in the embodiments of the present application may include various handheld devices with wireless communication capabilities, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem. The MS may also be referred to as a terminal. The MS may also be a subscriber unit, a cellular phone, a smart phone, a wireless data card, a personal digital assistant (PDA), a tablet computer, a wireless modem, a handheld device (handset), a laptop computer, a machine type communication (MTC) terminal, etc. In the present invention, a terminal may also be referred to as a terminal device.

[0090] Exemplarily, FIG3 above is an example of a wireless communication system provided in an embodiment of the present application, which includes a signal source (a base station and / or a terminal as shown in FIG3 ) and an intelligent metasurface RIS (not shown in FIG3 , see FIG3 , which may be located between the terminal and the base station), specifically:

[0091] A signal source is configured to send first information to the RIS via a physical downlink control channel (PDCCH); and to send second information to the RIS via a physical downlink shared channel (PDSCH); wherein the first information indicates a method for obtaining the second information; the second information indicates first configuration information of each array in the RIS; and the first configuration information indicates a configuration of the RIS having performance higher than a lower performance limit of the RIS.

[0092] The RIS is configured to receive first information; obtain second information sent by a signal source via a physical downlink shared channel (PDSCH) based on the first information; and configure each array in the RIS based on the second information.

[0093] For example, Figure 4 is a structural diagram of a RIS provided in an embodiment of the present application. As shown in Figure 4, a smart metasurface may include:

[0094] The information transceiver module 401 is configured to receive first information sent by a source via a physical downlink control channel (PDCCH); wherein the first information indicates a method for obtaining second information; the second information indicates first configuration information of each array in the RIS; and the first configuration information indicates a configuration of the RIS having performance higher than a lower performance limit of the RIS.

[0095] An information processing module 402 is configured to obtain, based on the first information, second information sent by a signal source via a physical downlink shared channel (PDSCH);

[0096] The array configuration module 403 is used to configure each array in the RIS according to the second information.

[0097] For example, FIG5 is a structural diagram of a signal source provided by an embodiment of the present application. As shown in FIG5 , a signal source may include:

[0098] The first sending module 501 is configured to send first information to the intelligent metasurface RIS via a physical downlink control channel (PDCCH), wherein the first information is used to indicate a method for obtaining second information; the second information is used to indicate first configuration information of each array in the RIS; and the first configuration information is used to indicate a configuration of the RIS having performance higher than a performance lower bound of the RIS;

[0099] The second sending module 502 is configured to send second information to the RIS via the physical downlink shared channel PDSCH to instruct the RIS to configure each phase in the RIS according to the second information.

[0100] It should be understood that the wireless communication system, signal source, or RIS shown in Figures 3 to 5 is merely an example, and that the wireless communication system, signal source, and RIS may have more or fewer components than shown in the figures, may combine two or more components, or may have a different component configuration. The various components shown in Figures 3 to 5 may be implemented in hardware, including one or more signal processing and / or application specific integrated circuits, software, or a combination of hardware and software.

[0101] The following is a detailed description of a method for controlling an intelligent metasurface provided in an embodiment of the present application with reference to Figures 6 to 9.

[0102] For example, Figure 6 is a flow chart of a control method for a smart metasurface provided in an embodiment of the present application. As shown in Figure 6, a control method for a smart metasurface provided in an embodiment of the present application can be applied to a wireless communication system, which includes a first device such as a base station and a smart metasurface RIS. The method may include the following steps:

[0103] S601, the base station sends first information to the RIS via a physical downlink control channel PDCCH;

[0104] The physical downlink control channel PDCCH is a channel used to transmit DCI, and may also transmit information such as a slot format indicator (SFI) and a preemption indication (PI).

[0105] S602, the base station sends second information to the RIS via a physical downlink shared channel PDSCH;

[0106] The first information indicates how the second information is obtained. The second information indicates the first configuration information for each phase in the RIS. The first configuration information indicates the configuration of the RIS with performance exceeding the lower performance limit of the RIS. In other words, the first information can be considered first-level DCI, and the second information can be considered second-level DCI. The embodiments of the present application classify the DCI used to control the RIS and transmit the different levels of DCI obtained through different channels. This decouples the configuration information used to control the RIS, eliminating DCI length limitations and achieving more effective control of the RIS.

[0107] In one example, the information indicating the configuration of the lower bound of the performance of the RIS, that is, the second configuration information, can be a codebook or a beam index. The codebook includes a finite set of vectors consisting of the beams corresponding to the RIS. Each vector in the codebook represents a possible beam shape and can be used to assist in calculating the beam shape, that is, for beamforming. The beam index is used to indicate the identifier of the beam corresponding to the RIS. In the case where the second configuration information includes the codebook or the beam index, the first configuration information can be, for example, the phase weights of one or more arrays in the RIS. The beam adjustment accuracy corresponding to the phase weights of the arrays is higher than that of the codebook. Based on this, the RIS configures the arrays in the RIS according to the first configuration information, which can ensure that the performance of the RIS is higher than that when configured according to the codebook.

[0108] In an optional example, the method for obtaining the second information indicated by the first information may include position information and / or decoding method of the second information in the PDSCH. The position information of the second information in the PDSCH may be, for example, the position of the second information in the time domain and / or frequency domain of the PDSCH.

[0109] S603, the RIS obtains second information sent by the information source via the physical downlink shared channel PDSCH based on the first information;

[0110] S604: RIS configures each phase in RIS according to the second information.

[0111] For example, Figure 7 is an example diagram of an indication method for RIS configuration information provided in an embodiment of the present application. As shown in Figure 7, the gNB transmits the first-level DCI in the PDCCH and indicates two types of information:

[0112] Category 1: Information indicating the relevant information of the second-level DCI, such as the time-frequency domain resource location of the second-level DCI; the coding method of the second-level DCI, AMC (Adaptive Modulation and Coding, an adaptive coding and modulation technology used on wireless channels that ensures link transmission quality by adjusting the modulation method and coding rate of wireless link transmission); BLER (block error rate) threshold, etc.

[0113] The second category: low-overhead control information, such as codebook / beam index and low-overhead topology pattern. The gNB transmits second-level DCI in the PDSCH to indicate high-overhead control information, such as the specific weight of the RIS and the topology of the high-overhead RIS array.

[0114] It should be noted that the two-level DCI indication of RIS can be applied to the following two scenarios: RIS weight indication and HRRIS (Hybrid Reflective Reconfigurable Intelligent Surface, a hybrid reflective adjustable intelligent metasurface that can selectively shut down arrays to reduce power consumption) topology indication.

[0115] In an optional example, the first information is further used to indicate that the RIS is prohibited from feeding back response information corresponding to the second information;

[0116] RIS is also used for:

[0117] After receiving first information sent by a source through a physical downlink control channel (PDCCH), a target process is disabled according to the first information, where the target process is used to feed back response information.

[0118] For example, when the RIS fails to correctly detect the PDSCH on a resource block, i.e., fails to obtain the second information, it does not need to send an ACK (acknowledgement) or NACK (negative acknowledgment) back to the gNB and directly uses the codebook in the PDCCH for data transmission. The ACK and NACK can, for example, be HARQ (Hybrid Automatic Repeat Request) hybrid automatic repeat request. In another example, when the RIS detects the PDSCH on a resource block, i.e., successfully obtains the second information, it also does not need to send an acknowledgment back to the gNB.

[0119] In one example, the AMC and BLER thresholds of the PDSCH used to transmit the second information such as the weight residual may be the same as or different from the existing PDSCH, i.e., the PDSCH for transmitting service data. For example, the possible differences between the PDSCH carrying the second-level DCI and the PDSCH for data transmission may be shown in Table 1 below:

[0120] For example, for the first stage DCI and the second stage DCI, the following DCI fields may be used to indicate the configuration of the RIS, as shown in Table 2 and Table 3 below, respectively:

[0121] In an optional example, the first information is further used to indicate second configuration information, and the second configuration information is used to indicate a configuration of a RIS having a performance lower bound;

[0122] RIS is also used for:

[0123] In the case of failure in obtaining the second information, configuration of each array in the RIS is performed according to the second configuration information indicated by the first information.

[0124] For example, when the RIS fails to correctly detect the PDSCH on the resource block, it can directly use the information indicated in the PDCCH for auxiliary communication. Resource Block (RB): 12 consecutive subcarriers in frequency and one time slot in time domain are called 1 RB.

[0125] In an optional example, the first configuration information includes a phase weight of an array in the RIS; and / or,

[0126] In the case where the RIS is an array-enabled controllable hybrid reflective adjustable smart metasurface HRRIS, the first configuration information includes: a topological map of the array in the HRRIS.

[0127] For example, FIG8 is one of the example diagrams of the content of RIS configuration information provided by an embodiment of the present application. As shown in FIG8 , this embodiment is directed to the transmission of the phase weights of the array in the RIS, decoupling the RIS weights into a high overhead portion and a low overhead portion, which are transmitted in the PDCCH and PDSCH, respectively. The gNB transmits low overhead configuration information corresponding to the traditional beam in the PDCCH, such as the beam codebook. The codebook is used to ensure the lower bound of transmission performance. The gNB can transmit high overhead configuration information such as detailed weight information in the PDSCH, such as the ideal weight (for example, the array phase weight obtained by the KR algorithm shown in FIG2 ) or the residual between the ideal weight and the codebook, that is, the weight residual.

[0128] This embodiment uses two-level DCI to transmit RIS phase weights. By decoupling the weights, low-overhead codebook information can be transmitted in the PDCCH, while high-overhead detailed weight information can be transmitted in the PDCSH. This allows for more precise weight indication and improves RIS-assisted communication performance.

[0129] In an optional example, the first information is further used to indicate second configuration information, and the second configuration information is used to indicate that the performance of the RIS is configured as a performance lower bound;

[0130] The first configuration information includes first sub-configuration information obtained based on the second configuration information, and the time domain resources and frequency domain resources occupied by the first sub-configuration information are lower than those of the first configuration information;

[0131] RIS, specifically for:

[0132] If the second information is successfully obtained, determining the first configuration information based on the first sub-configuration information and the second configuration information;

[0133] According to the first configuration information, each array in the RIS is configured.

[0134] In an optional example, when the second configuration information includes a codebook, the first sub-configuration information includes a residual of a phase weight of an array in the RIS;

[0135] When the second configuration information includes the first sub-topology map of the array in the RIS, the first sub-configuration information includes the second sub-topology map of the array in the RIS; the first sub-topology map and the second sub-topology map are topology maps obtained by dividing the overall topology map of the array in the RIS, and the overall topology map is used to indicate the activation of the array in the RIS.

[0136] Exemplarily, the RIS may be configured using the phase weights of the arrays in the RIS indicated by the second-level DCI, or the complete topology of the arrays in the RIS indicated by the second-level DCI; alternatively, the RIS may obtain the phase weights of the arrays in the RIS using a combination of the codebook indicated by the first-level DCI and the weight residual indicated by the second-level DCI; alternatively, the RIS may be configured using a combination of the RIS array topologies indicated by the first-level DCI.

[0137] For example, FIG9 is one of the example diagrams of the content of the configuration information of a RIS provided in an embodiment of the present application. As shown in FIG9 , in this embodiment, for the case where the configuration information of the RIS is a topological diagram of the array in the HRRIS, the total topological diagram of the array in the HRRIS is decoupled into a low-overhead topological pattern, i.e., the first sub-topological diagram of the array in the RIS, and a high-overhead topological pattern, i.e., the second sub-topological diagram of the array in the RIS, which are transmitted in the PDCCH and PDSCH respectively. Among them, the RIS array at the topological position indicated by any of the above topological diagrams is required to be turned off or on. For example, as shown in FIG9 , the shaded topological position represents on, and the white topological position represents off; or, the shaded topological position represents off, and the white topological position represents on. The specific setting can be based on the application requirements, and the embodiment of the present application does not impose any restrictions on this.

[0138] Specifically, regarding the topology indication of the RIS array: in one example, the gNB transmits a low-overhead topology pattern in the PDCCH to ensure the lower bound of RIS transmission performance, or the performance lower bound; the gNB transmits a high-overhead topology pattern in the PDSCH to enhance RIS transmission performance. In another alternative example, the gNB transmits all topology patterns in the PDSCH, i.e., the topology patterns of the arrays in the HRRIS, without decoupling, and can be directly transmitted in the PDSCH as secondary information.

[0139] The topology of the array in the HRRIS is used to indicate the opening and / or closing of the array in the HRRIS. In an optional example, the overall topology of the array in the HRRIS can be decoupled into a low-overhead topology pattern containing a first number (4 and 16 as shown in Figure 9) of arrays in a preset shape (a square as shown in Figure 9) area in the complete topology, and a high-overhead topology pattern containing a second number (1 as shown in Figure 9) of arrays. The preset shape can be set specifically according to application requirements. For example, in this embodiment, it is set to a regular shape to ensure that the calculation can be more convenient. The embodiment of the present application does not limit the preset shape, and any preset shape that can decouple the complete topology of the array in the RIS can be used in this application.

[0140] This embodiment uses two-level DCI to transmit RIS array topology information. Similar to the RIS array phase weight, by decoupling the RIS topology, low-overhead topology information is transmitted in the PDCCH, while high-overhead topology information is transmitted in the PDCSH. This ensures that RIS configuration information is more comprehensive and accurate, improving communication quality.

[0141] In addition, the systems and devices shown in Figures 3 to 5 of the present application respectively include hardware and / or software modules for performing the corresponding functions in order to realize the functions of the control method of the intelligent metasurface in the above-mentioned embodiments of the present application. In combination with the algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or 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 in combination with the embodiments, but such implementation should not be considered to be beyond the scope of this application.

[0142] This embodiment further provides a computer storage medium, in which computer instructions are stored. When the computer instructions are executed on an electronic device, the electronic device executes the above-mentioned related method steps to implement the network management method in the above-mentioned embodiment.

[0143] This embodiment further provides a computer program product. When the computer program product is run on a computer, the computer is caused to execute the above-mentioned related steps to implement the network management method in the above-mentioned embodiment.

[0144] Among them, the electronic device, computer storage medium, computer program product or chip provided in this embodiment is used to execute the corresponding method provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method provided above, and will not be repeated here.

[0145] Any content of each embodiment of this application, as well as any content of the same embodiment, can be freely combined. Any combination of the above content is within the scope of this application.

[0146] Those skilled in the art will appreciate that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any media that facilitates the transmission of computer programs from one place to another. The storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0147] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A control method for an intelligent metasurface, characterized in that: Applied to the intelligent super surface RIS, the method comprises: Receiving first information sent by a first device through a physical downlink control channel PDCCH; wherein the first information is used to indicate a method for obtaining second information; the second information is used to indicate first configuration information of each array in the RIS; the first configuration information is used to indicate a configuration of a RIS having a performance higher than a performance lower limit of the RIS; Acquire, according to the first information, second information sent by the first device through a physical downlink shared channel PDSCH; According to the second information, each array in the RIS is configured.

2. The method according to claim 1, characterized in that The first information is also used to indicate that the RIS is prohibited from feeding back response information corresponding to the second information; After receiving the first information sent by the first device through a physical downlink control channel PDCCH, the method further includes: According to the first information, a target process is disabled, wherein the target process is used to feed back the response information.

3. The method according to claim 1 or 2, characterized in that: The first information is further used to indicate second configuration information, where the second configuration information is used to indicate the configuration of the RIS having a performance lower bound; After acquiring, according to the first information, second information sent by the first device through a physical downlink shared channel PDSCH, the method further includes: In the case of failure in acquiring the second information, configuration of each array in the RIS is performed according to the second configuration information indicated by the first information.

4. The method according to any one of claims 1 to 3, characterized in that The first configuration information includes the phase weight of the array in the RIS; and / or, In the case where the RIS is an array-enabled controllable hybrid reflective adjustable smart metasurface HRRIS, the first configuration information includes: a topological map of the array in the HRRIS.

5. The method according to any one of claims 1 to 4, characterized in that The first information is further used to indicate second configuration information, where the second configuration information is used to indicate that the performance of the RIS is configured as the performance lower bound; The first configuration information includes first sub-configuration information obtained based on the second configuration information, and the time domain resources and frequency domain resources occupied by the first sub-configuration information are lower than those of the first configuration information; The configuring of each array in the RIS according to the second information includes: In the case where the second information is successfully acquired, determining the first configuration information based on the first sub-configuration information and the second configuration information; According to the first configuration information, each array in the RIS is configured.

6. The method according to claim 5, characterized in that When the second configuration information includes a codebook, the first sub-configuration information includes a residual of a phase weight of an array in the RIS; When the second configuration information includes a first sub-topology map of an array in the RIS, the first sub-configuration information includes a second sub-topology map of an array in the RIS; the first sub-topology map and the second sub-topology map are topology maps obtained by dividing a total topology map of an array in the RIS, and the total topology map is used to indicate the opening of an array in the RIS.

7. The method according to any one of claims 1 to 6, characterized in that The acquisition method includes location information and / or decoding method of the second information in the PDSCH.

8. A method for controlling an intelligent metasurface, characterized in that: Applied to a first device, the method includes: Sending first information to the smart metasurface RIS via a physical downlink control channel PDCCH, wherein the first information is used to indicate a method for obtaining the second information; the second information is used to indicate first configuration information of each array in the RIS; and the first configuration information is used to indicate a configuration of a RIS having a performance higher than a performance lower bound of the RIS; The second information is sent to the RIS via a physical downlink shared channel PDSCH to instruct the RIS to configure each phase in the RIS according to the second information.

9. The method according to claim 8, characterized in that The first information is also used to indicate that the RIS is prohibited from feeding back response information corresponding to the second information.

10. The method according to claim 8 or 9, characterized in that: The first information is further used to indicate second configuration information, and the second configuration information is used to indicate the configuration of the RIS having a performance lower bound.

11. The method according to any one of claims 8 to 10, characterized in that The first configuration information includes the phase weight of the array in the RIS; and / or, In the case where the RIS is an array-enabled controllable hybrid reflective adjustable smart metasurface HRRIS, the first configuration information includes: a topological map of the array in the HRRIS.

12. The method according to any one of claims 8 to 11, characterized in that The first information is further used to indicate second configuration information, where the second configuration information is used to indicate that the performance of the RIS is configured as the performance lower bound; The first configuration information includes first sub-configuration information obtained based on the second configuration information, the time domain resources and frequency domain resources occupied by the first sub-configuration information are lower than those of the first configuration information, and the first sub-configuration information is used by the RIS to determine the first configuration information based on the first sub-configuration information and the second configuration information.

13. The method according to claim 12, characterized in that When the second configuration information includes a codebook, the first sub-configuration information includes a residual of a phase weight of an array in the RIS; When the second configuration information includes a first sub-topology map of an array in the RIS, the first sub-configuration information includes a second sub-topology map of an array in the RIS; the first sub-topology map and the second sub-topology map are topology maps obtained by dividing a total topology map of an array in the RIS, and the total topology map is used to indicate the opening of an array in the RIS.

14. The method according to any one of claims 8 to 13, characterized in that The acquisition method includes location information and / or decoding method of the second information in the PDSCH.

15. A method for controlling an intelligent metasurface, characterized in that: Applied to a wireless communication system, the system includes a first device and an intelligent super surface RIS, and the method includes: The first device is used to send first information to the RIS via a physical downlink control channel PDCCH; and send second information to the RIS via a physical downlink shared channel PDSCH; wherein the first information is used to indicate a method for obtaining the second information; the second information is used to indicate first configuration information of each array in the RIS; and the first configuration information is used to indicate a configuration of a RIS having a performance higher than a performance lower limit of the RIS; The RIS is used to receive the first information; obtain second information sent by the first device through a physical downlink shared channel PDSCH according to the first information; and configure each array in the RIS according to the second information.

16. The method according to claim 15, characterized in that The first information is also used to indicate that the RIS is prohibited from feeding back response information corresponding to the second information; The RIS is also used to: After receiving first information sent by a first device through a physical downlink control channel PDCCH, a target process is disabled according to the first information, wherein the target process is used to feed back the response information.

17. The method according to claim 15 or 16, characterized in that The first information is further used to indicate second configuration information, where the second configuration information is used to indicate the configuration of the RIS having a performance lower bound; The RIS is also used to: In the case of failure in acquiring the second information, configuration of each array in the RIS is performed according to the second configuration information indicated by the first information.

18. The method according to any one of claims 15 to 17, characterized in that The first configuration information includes the phase weight of the array in the RIS; and / or, In the case where the RIS is an array-enabled controllable hybrid reflective adjustable smart metasurface HRRIS, the first configuration information includes: a topological map of the array in the HRRIS.

19. The method according to any one of claims 15 to 18, characterized in that The first information is further used to indicate second configuration information, where the second configuration information is used to indicate that the performance of the RIS is configured as the performance lower bound; The first configuration information includes first sub-configuration information obtained based on the second configuration information, and the time domain resources and frequency domain resources occupied by the first sub-configuration information are lower than those of the first configuration information; The RIS is specifically used for: In the case where the second information is successfully acquired, determining the first configuration information based on the first sub-configuration information and the second configuration information; According to the first configuration information, each array in the RIS is configured.

20. The method according to claim 19, characterized in that When the second configuration information includes a codebook, the first sub-configuration information includes a residual of a phase weight of an array in the RIS; When the second configuration information includes a first sub-topology map of an array in the RIS, the first sub-configuration information includes a second sub-topology map of an array in the RIS; the first sub-topology map and the second sub-topology map are topology maps obtained by dividing a total topology map of an array in the RIS, and the total topology map is used to indicate the opening of an array in the RIS.

21. The method according to any one of claims 15 to 20, characterized in that The acquisition method includes location information and / or decoding method of the second information in the PDSCH.

22. A control device for an intelligent metasurface, characterized in that: Applied to intelligent super surface RIS, the device comprises: An information transceiver module is used to receive first information sent by a first device through a physical downlink control channel PDCCH; wherein the first information is used to indicate a method for obtaining second information; the second information is used to indicate first configuration information of each array in the RIS; the first configuration information is used to indicate a configuration of a RIS having a performance higher than a performance lower limit of the RIS; An information processing module, configured to obtain, according to the first information, second information sent by the first device through a physical downlink shared channel PDSCH; The array configuration module is used to configure each array in the RIS according to the second information.

23. The device according to claim 22, characterized in that The first information is also used to indicate that the RIS is prohibited from feeding back response information corresponding to the second information; The information transceiver module is also used for: After receiving first information sent by a first device through a physical downlink control channel PDCCH, a target process is disabled according to the first information, wherein the target process is used to feed back the response information.

24. The device according to claim 22 or 23, characterized in that The first information is further used to indicate second configuration information, where the second configuration information is used to indicate the configuration of the RIS having a performance lower bound; The array configuration module is further configured to configure each array in the RIS according to the second configuration information indicated by the first information when the acquisition of the second information fails.

25. The device according to any one of claims 22 to 24, characterized in that The first configuration information includes the phase weight of the array in the RIS; and / or, In the case where the RIS is an array-enabled controllable hybrid reflective adjustable smart metasurface HRRIS, the first configuration information includes: a topological map of the array in the HRRIS.

26. The device according to any one of claims 22 to 25, characterized in that The first information is further used to indicate second configuration information, where the second configuration information is used to indicate that the performance of the RIS is configured as the performance lower bound; The first configuration information includes first sub-configuration information obtained based on the second configuration information, and the time domain resources and frequency domain resources occupied by the first sub-configuration information are lower than those of the first configuration information; The array configuration module is specifically used for: In the case where the second information is successfully acquired, determining the first configuration information based on the first sub-configuration information and the second configuration information; According to the first configuration information, each array in the RIS is configured.

27. The device according to claim 26, characterized in that When the second configuration information includes a codebook, the first sub-configuration information includes a residual of a phase weight of an array in the RIS; When the second configuration information includes a first sub-topology map of an array in the RIS, the first sub-configuration information includes a second sub-topology map of an array in the RIS; the first sub-topology map and the second sub-topology map are topology maps obtained by dividing a total topology map of an array in the RIS, and the total topology map is used to indicate the opening of an array in the RIS.

28. The device according to any one of claims 22 to 27, characterized in that The acquisition method includes location information and / or decoding method of the second information in the PDSCH.

29. A control device for an intelligent metasurface, characterized in that: Applied to a first device, the apparatus comprises: A first sending module is used to send first information to the intelligent metasurface RIS through a physical downlink control channel PDCCH, wherein the first information is used to indicate a method for obtaining the second information; the second information is used to indicate first configuration information of each array in the RIS; and the first configuration information is used to indicate a configuration of a RIS having a performance higher than a performance lower bound of the RIS; The second sending module is used to send the second information to the RIS through a physical downlink shared channel PDSCH to indicate that the RIS root The configuration of each phase in the RIS is performed according to the second information.

30. The device according to claim 29, characterized in that The first information is also used to indicate that the RIS is prohibited from feeding back response information corresponding to the second information.

31. The device according to claim 29 or 30, characterized in that The first information is further used to indicate second configuration information, and the second configuration information is used to indicate the configuration of the RIS having a performance lower bound.

32. The device according to any one of claims 29 to 31, characterized in that The first configuration information includes the phase weight of the array in the RIS; and / or, In the case where the RIS is an array-enabled controllable hybrid reflective adjustable smart metasurface HRRIS, the first configuration information includes: a topological map of the array in the HRRIS.

33. The device according to any one of claims 29 to 32, characterized in that The first information is further used to indicate second configuration information, where the second configuration information is used to indicate that the performance of the RIS is configured as the performance lower bound; The first configuration information includes first sub-configuration information obtained based on the second configuration information, the time domain resources and frequency domain resources occupied by the first sub-configuration information are lower than those of the first configuration information, and the first sub-configuration information is used by the RIS to determine the first configuration information based on the first sub-configuration information and the second configuration information.

34. The device according to claim 33, characterized in that When the second configuration information includes a codebook, the first sub-configuration information includes a residual of a phase weight of an array in the RIS; When the second configuration information includes a first sub-topology map of an array in the RIS, the first sub-configuration information includes a second sub-topology map of an array in the RIS; the first sub-topology map and the second sub-topology map are topology maps obtained by dividing a total topology map of an array in the RIS, and the total topology map is used to indicate the opening of an array in the RIS.

35. The device according to any one of claims 29 to 34, characterized in that The acquisition method includes location information and / or decoding method of the second information in the PDSCH.

36. A wireless communication system, characterized in that: The system includes a first device and an intelligent metasurface RIS; The first device is used to send first information to the RIS via a physical downlink control channel PDCCH; and send second information to the RIS via a physical downlink shared channel PDSCH; wherein the first information is used to indicate a method for obtaining the second information; the second information is used to indicate first configuration information of each array in the RIS; and the first configuration information is used to indicate a configuration of a RIS having a performance higher than a performance lower limit of the RIS; The RIS is used to receive the first information; obtain second information sent by the first device through a physical downlink shared channel PDSCH according to the first information; and configure each array in the RIS according to the second information.

37. The system according to claim 36, characterized in that The first information is also used to indicate that the RIS is prohibited from feeding back response information corresponding to the second information; The RIS is also used to: After receiving first information sent by a first device through a physical downlink control channel PDCCH, a target process is disabled according to the first information, wherein the target process is used to feed back the response information.

38. The system according to claim 36 or 37, characterized in that The first information is further used to indicate second configuration information, where the second configuration information is used to indicate the configuration of the RIS having a performance lower bound; The RIS is also used to: In the case of failure in acquiring the second information, configuration of each array in the RIS is performed according to the second configuration information indicated by the first information.

39. A system according to any one of claims 36 to 38, characterized in that The first configuration information includes the phase weight of the array in the RIS; and / or, In the case where the RIS is an array-enabled controllable hybrid reflective adjustable smart metasurface HRRIS, the first configuration information includes: a topological map of the array in the HRRIS.

40. The system according to any one of claims 36 to 39, characterized in that The first information is further used to indicate second configuration information, where the second configuration information is used to indicate that the performance of the RIS is configured as the performance lower bound; The first configuration information includes first sub-configuration information obtained based on the second configuration information, and the time domain resources and frequency domain resources occupied by the first sub-configuration information are lower than those of the first configuration information; The RIS is specifically used for: In the case where the second information is successfully acquired, determining the first configuration information based on the first sub-configuration information and the second configuration information; According to the first configuration information, each array in the RIS is configured.

41. The system according to claim 40, characterized in that When the second configuration information includes a codebook, the first sub-configuration information includes a residual of a phase weight of an array in the RIS; When the second configuration information includes a first sub-topology map of an array in the RIS, the first sub-configuration information includes a second sub-topology map of an array in the RIS; the first sub-topology map and the second sub-topology map are topology maps obtained by dividing a total topology map of an array in the RIS, and the total topology map is used to indicate the opening of an array in the RIS.

42. A system according to any one of claims 36 to 41, characterised in that The acquisition method includes location information and / or decoding method of the second information in the PDSCH.

43. An electronic device, characterized in that: include: Processor and memory; The processor is connected to the memory; The memory is used to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the method according to any one of claims 1 to 21.

44. A computer-readable storage medium, characterized in that It comprises a computer program, characterized in that when the computer program is run on an electronic device, the electronic device executes the method as claimed in any one of claims 1 to 21.

45. A chip, characterized in that: It comprises one or more interface circuits and one or more processors; the interface circuit is used to receive a signal from a memory of an electronic device and send the signal to the processor, the signal including a computer instruction stored in the memory; when the processor executes the computer instruction, the electronic device executes the method described in any one of claims 1 to 21.

46. ​​A computer program product, characterized in that The invention comprises a computer program, which, when executed by an electronic device, enables the electronic device to execute the method according to any one of claims 1 to 21.

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