Reconfigurable intelligent surface control method and apparatus

Abstract

The present application provides a reconfigurable intelligent surface (RIS) control method and apparatus. The RIS control method is applied to an RIS. The method comprises: receiving first information sent by a first device by means of 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 element in the RIS, and the first configuration information is used for indicating a configuration of the RIS having the performance higher than a lower performance limit of the RIS; on the basis of the first information, acquiring the second information sent by the first device by means of a physical downlink shared channel (PDSCH); and configuring each element in the RIS on the basis of the second information. Embodiments of the present application can implement more effective control over the RIS and improve the communication quality.

Description

Control methods and devices for intelligent metasurfaces Technical Field

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

[0002] Intelligent metasurfaces (RIS), also known as "reconfigurable intelligent surfaces" or "intelligent reflective surfaces," can reflect or refract radio frequency (RF) energy around obstacles. Therefore, they can be flexibly deployed in wireless communication propagation environments to create line-of-sight (LoS) propagation paths, or wireless channels, between the source and the target.

[0003] In related technologies, a Resonant Array (RIS) comprises multiple elements. A signal source, such as a gNB (5G base station), can control the frequency, phase, polarization, and other characteristics of the electromagnetic waves reflected or refracted by the RIS by instructing configuration information such as the phase weights and the number of elements activated in each element, 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 instructs configuration information to control the RIS to adjust the element configuration. For example, the base station instructs the phase weights of each element in the RIS in the form of downlink control information (DCI).

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

[0005] Summary of the Invention

[0006] This application provides a control method and apparatus for a smart metasurface, which can hierarchically send configuration information of the RIS, thereby achieving more effective control of the RIS and improving communication quality.

[0007] In a first aspect, embodiments of this application provide a control method for a smart metasurface, applied to a smart metasurface RIS. The method includes: receiving first information sent by a first device through a physical downlink control channel PDCCH; wherein the first information is used to indicate the acquisition method of second information; the second information is used to indicate first configuration information of each subarray in the RIS; the first configuration information is used to indicate the configuration of a RIS whose performance is higher than the lower bound of the RIS's performance; acquiring the second information sent by the first device through a physical downlink shared channel PDSCH according to the first information; and configuring each subarray in the RIS according to the second information.

[0008] In this embodiment, the first device transmits information controlling the Intelligent Metasurface (RIS) in two levels: first information and second information. The second information, used to indicate the specific configuration of each sub-array in the RIS, is transmitted via the Physical Downlink Shared Channel (PDSCH), essentially as service data and not subject to the length limitations of the DCI. Based on this, the RIS can obtain the second information through the first information and then adjust the configuration of its sub-arrays accordingly. Thus, the first device's control of the RIS is not limited by the RIS's specifications, achieving effective control and improving communication quality.

[0009] According to the first aspect, the first information is also used to instruct that the RIS be prohibited from feeding back the 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 further includes: disabling the target process according to the first information, wherein the target process is used to feed back the response information.

[0010] In this embodiment of the 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 the second configuration information, which is used to indicate the configuration of the RIS whose performance is the lower bound of the performance; after obtaining the second information sent by the first device through the physical downlink shared channel PDSCH according to the first information, the method further includes: in the case of failure to obtain the second information, configuring each element in the RIS according to the second configuration information indicated by the first information.

[0012] In this embodiment of the application, if the acquisition of the second information fails, the configuration of each element in the RIS is performed directly based on the first information, thereby ensuring communication through configuration that can achieve a 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 weights of the radians in the RIS; and / or, in the case of the RIS being a radian with an enabled controllable hybrid reflection adjustable smart metasurface HRRIS, the first configuration information includes: the topology of the radians in the HRRIS.

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

[0015] According to the first aspect, or any implementation of the first aspect above, the first information is further used to indicate the second configuration information, which is used to indicate that the performance of the RIS is configured to the lower bound of the performance; the first configuration information includes a first sub-configuration information obtained based on the second configuration information, wherein 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 configuration of each subarray in the RIS is performed according to the second information, including: if the second information is successfully obtained, determining the first configuration information based on the first sub-configuration information and the second configuration information; and the configuration of each subarray in the RIS is performed according to the first configuration information.

[0016] In this embodiment, the configuration of each element in the RIS is performed in a corresponding manner for the case where the second information is successfully acquired, as well as for different cases of the first and second information, to ensure successful configuration and improve communication quality.

[0017] According to the first aspect, or any implementation of the first aspect above, when the second configuration information includes a codebook, the first sub-configuration information includes the residual of the phase weights of the RIS; when the second configuration information includes the first sub-topology map of the RIS, the first sub-configuration information includes the second sub-topology map of 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 RIS, and the total topology map is used to indicate the activation of the RIS.

[0018] In this embodiment of the application, different first sub-configuration information is set for different second configuration information 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 the location information of the second information in the PDSCH and / or the decoding method.

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

[0021] Secondly, embodiments of this application provide a control method for a smart metasurface, applied to a first device, the method comprising:

[0022] The first information is sent to the intelligent metasurface RIS via the physical downlink control channel PDCCH, wherein the first information is used to indicate the acquisition method of the second information; the second information is used to indicate the first configuration information of each array in the RIS; the first configuration information is used to indicate the configuration of the RIS whose performance is higher than the lower bound of the RIS's performance; the second information is sent to the RIS via the 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 also used to instruct the RIS to prohibit the feedback of the 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 also used to indicate the second configuration information, which is used to indicate the configuration of the RIS with performance as the lower bound of the performance.

[0025] According to the second aspect, or any implementation of the second aspect above, the first configuration information includes the phase weights of the radians in the RIS; and / or, in the case of the RIS being an enabled controllable hybrid reflection adjustable smart metasurface HRRIS for the radians, the first configuration information includes: the topology map of the radians in the HRRIS.

[0026] According to the second aspect, or any implementation of the second aspect above, the first information is further used to indicate the second configuration information, which is used to indicate that the performance of the RIS is configured as the lower bound of the performance; the first configuration information includes a 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.

[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 the residual of the phase weights of the RIS; when the second configuration information includes the first sub-topology map of the RIS, the first sub-configuration information includes the second sub-topology map of 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 RIS, and the total topology map is used to indicate the activation of the RIS.

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

[0029] The second aspect and any implementation thereof correspond to the first aspect and any implementation thereof, respectively. The technical effects of the second aspect and any implementation thereof are similar to those of the first aspect and any implementation thereof, and will not be repeated here.

[0030] Thirdly, embodiments of this application provide a control method for a smart metasurface, applied to a wireless communication system. The system includes a first device and a smart metasurface RIS. The method includes: the first device, configured 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 the acquisition method of the second information; the second information is used to indicate first configuration information of each element in the RIS; the first configuration information is used to indicate the configuration of the RIS whose performance is higher than the lower bound of the RIS's performance; and the RIS, configured to receive the first information; acquire the second information sent by the first device via the PDSCH according to the first information; and configure each element in the RIS according to the second information.

[0031] According to the third aspect, the first information is also used to instruct the RIS to prohibit the feedback of the response information corresponding to the second information; the 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 the response information.

[0032] According to the third aspect, or any implementation of the third aspect above, the first information is also used to indicate the second configuration information, which is used to indicate the configuration of the RIS with performance as the lower bound of performance.

[0033] The RIS is also used to: configure each element in the RIS according to the second configuration information indicated by the first information in the event that the second information fails to be obtained.

[0034] According to the third aspect, or any implementation of the third aspect above, the first configuration information includes the phase weights of the radians in the RIS; and / or, in the case of the RIS being an enabled controllable hybrid reflection adjustable smart metasurface HRRIS for the radians, the first configuration information includes: the topology of the radians 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 the second configuration information, which is used to indicate that the performance of the RIS is configured to the lower bound of the performance; the first configuration information includes a first sub-configuration information obtained based on the second configuration information, wherein 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: determine the first configuration information based on the first sub-configuration information and the second configuration information when the second information is successfully obtained; 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 the residual of the phase weights of the RIS; when the second configuration information includes the first sub-topology map of the RIS, the first sub-configuration information includes the second sub-topology map of 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 RIS, and the total topology map is used to indicate the activation of the RIS.

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

[0038] Fourthly, embodiments of this application provide a control device for a smart metasurface, applied to a smart metasurface RIS. The device includes: an information transceiver module, configured to receive first information transmitted by a first device via a physical downlink control channel (PDCCH); wherein the first information is used to indicate the acquisition method of second information; the second information is used to indicate first configuration information of each sub-array in the RIS; the first configuration information is used to indicate the configuration of RIS with performance higher than the lower bound of the performance of the RIS; an information processing module, configured to acquire the second information transmitted by the first device via a physical downlink shared channel (PDSCH) based on the first information; and a sub-array configuration module, configured to configure each sub-array in the RIS based on the second information.

[0039] According to the fourth aspect, the first information is also used to instruct that the RIS is prohibited from feeding back the 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 the response information.

[0040] According to the fourth aspect, or any implementation of the fourth aspect above, the first information is also used to indicate the second configuration information, which is used to indicate the configuration of the RIS whose performance is the lower bound of the performance; the sub-module configuration module is also used to configure each sub-module in the RIS according to the second configuration information indicated by the first information in the case of failure to obtain the second information.

[0041] According to the fourth aspect, or any implementation of the fourth aspect above, the first configuration information includes the phase weights of the radians in the RIS; and / or, in the case of the RIS being an enabled controllable hybrid reflection adjustable smart metasurface HRRIS for the radians, the first configuration information includes: the topology of the radians 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 the second configuration information, which is used to indicate that the performance of the RIS is configured to the lower bound of the performance; the first configuration information includes a first sub-configuration information obtained based on the second configuration information, wherein 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 sub-array configuration module is specifically used to: determine the first configuration information based on the first sub-configuration information and the second configuration information when the second information is successfully obtained; and configure each sub-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 the residual of the phase weights of the RIS; when the second configuration information includes the first sub-topology map of the RIS, the first sub-configuration information includes the second sub-topology map of 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 RIS, and the total topology map is used to indicate the activation of the RIS.

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

[0045] The fourth aspect and any implementation thereof correspond to the first aspect and any implementation thereof, respectively. The technical effects of the fourth aspect and any implementation thereof are similar to those of the first aspect and any implementation thereof, and will not be repeated here.

[0046] Fifthly, embodiments of this application provide a control device for a smart metasurface, applied to a first device, the device comprising:

[0047] The first transmitting module is used to transmit first information to the intelligent metasurface RIS via the physical downlink control channel PDCCH, wherein the first information is used to indicate the acquisition method of the second information; the second information is used to indicate the first configuration information of each element in the RIS; the first configuration information is used to indicate the configuration of the RIS whose performance is higher than the lower bound of the RIS's performance; the second transmitting module is used to transmit the second information to the RIS via the physical downlink shared channel PDSCH to instruct the RIS to configure each element in the RIS according to the second information.

[0048] According to the fifth aspect, the first information is also used to instruct the RIS to prohibit the feedback of the response information corresponding to the second information.

[0049] According to the fifth aspect, or any implementation of the fifth aspect above, the first information is also used to indicate the second configuration information, which is used to indicate the configuration of the RIS with performance as the lower bound of the performance.

[0050] According to the fifth aspect, or any implementation of the fifth aspect above, the first configuration information includes the phase weights of the radians in the RIS; and / or, in the case of the RIS being an enabled controllable hybrid reflection adjustable smart metasurface HRRIS for the radians, the first configuration information includes: the topology of the radians in the HRRIS.

[0051] According to the fifth aspect, or any implementation of the fifth aspect above, the first information is further used to indicate the second configuration information, which is used to indicate that the performance of the RIS is configured as the lower bound of the performance; the first configuration information includes a 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.

[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 weights of the RIS; when the second configuration information includes the first sub-topology map of the RIS, the first sub-configuration information includes the second sub-topology map of 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 RIS, and the total topology map is used to indicate the activation of the RIS.

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

[0054] The fifth aspect and any implementation thereof correspond to the first aspect and any implementation thereof, respectively. The technical effects of the fifth aspect and any implementation thereof are similar to those of the first aspect and any implementation thereof, and will not be repeated here.

[0055] Sixthly, embodiments of this application provide a wireless communication system, the system including a first device and a smart metasurface RIS;

[0056] A first device is configured 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). The first information indicates the method of acquiring the second information. The second information indicates the first configuration information of each subarray in the RIS. The first configuration information indicates the configuration of RISs with performance higher than the lower bound of the RIS's performance. The RIS is configured to receive the first information, acquire the second information sent by the first device via the PDSCH based on the first information, and configure each subarray in the RIS based on the second information.

[0057] According to the sixth aspect, the first information is also used to instruct the RIS to prohibit the feedback of the response information corresponding to the second information; the 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 the response information.

[0058] According to the sixth aspect, or any implementation of the sixth aspect above, the first information is also used to indicate the second configuration information, which is used to indicate the configuration of the RIS whose performance is the lower bound of the performance; the RIS is also used to: in the event that the acquisition of the second information fails, configure each element 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 weights of the radians in the RIS; and / or, in the case of the RIS being an enabled controllable hybrid reflection adjustable smart metasurface HRRIS for the radians, the first configuration information includes: the topology of the radians in the HRRIS.

[0060] According to the sixth aspect, or any implementation of the sixth aspect above, the first information is further used to indicate the second configuration information, which is used to indicate that the performance of the RIS is configured to the lower bound of the performance; the first configuration information includes a first sub-configuration information obtained based on the second configuration information, wherein 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: determine the first configuration information based on the first sub-configuration information and the second configuration information when the second information is successfully obtained; 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 weights of the RIS; when the second configuration information includes the first sub-topology map of the RIS, the first sub-configuration information includes the second sub-topology map of 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 RIS, and the total topology map is used to indicate the activation of the RIS.

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

[0063] The sixth aspect and any implementation thereof correspond to the first aspect and any implementation thereof, respectively. The technical effects of the sixth aspect and any implementation thereof are similar to those of the first aspect and any implementation thereof, and will not be repeated here.

[0064] In a seventh aspect, embodiments of this application provide an electronic device, including: a processor and a memory; the processor and the memory are connected; the memory is used to store one or more programs; when one or more programs are executed by one or more processors, the one or more processors implement the method as described in the first to third aspects and any one of the implementations of the first to third aspects.

[0065] Eighthly, embodiments of this application provide a computer-readable medium for storing a computer program including instructions for performing the methods of the first to third aspects or any possible implementations of the first to third aspects.

[0066] In a ninth aspect, embodiments of this application provide a computer program including instructions for performing the methods of the first to third aspects or any possible implementations of the first to third aspects.

[0067] In a tenth aspect, embodiments of this application provide a chip including a processing circuit and transceiver pins. The transceiver pins and the processing circuit communicate with each other via an internal connection path. The processing circuit executes methods from the first to the third aspects or any possible implementation of the first to the third aspects to control the receiving pins to receive signals and to control the transmitting pins to transmit signals. Attached Figure Description

[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] Figure 3 is a structural example diagram of a communication system provided in an embodiment of this application;

[0071] Figure 4 is a structural example diagram of a RIS provided in an embodiment of this application;

[0072] Figure 5 is a structural example diagram of a signal source provided in an embodiment of this application;

[0073] Figure 6 is a flowchart of a control method for an intelligent metasurface provided in an embodiment of this application;

[0074] Figure 7 is an example diagram of a RIS configuration information indication method provided in an embodiment of this application;

[0075] Figure 8 is one of the example diagrams of configuration information of a RIS provided in an embodiment of this application;

[0076] Figure 9 is one of the example diagrams of configuration information of a RIS provided in an embodiment of this application. Detailed Implementation

[0077] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions 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, 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.

[0078] The terms "first," "second," etc., used in the specification, embodiments, claims, and drawings of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or order. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can indicate three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item)" refers to one or more, and "more" refers to two or more. "Installation," "connection," "linking," etc., should be interpreted broadly, for example, it can be an electrical connection or a mechanical connection; it can be a fixed connection or a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, or a connection within two elements. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, for example, including a series of steps or units. Methods, systems, products, or equipment are not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or equipment. Terms such as “up,” “down,” “left,” and “right” are used only with respect to the orientation of components in the accompanying drawings. These directional terms are relative concepts used for relative description and clarification and may vary 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 "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0080] To facilitate understanding of the embodiments of this application, some background technologies involved in the embodiments of this application will be introduced first:

[0081] For example, Figure 1 shows an example of how a RIS (Reflection Array) works. As shown in Figure 1, the RIS, as a new type of network device, can be installed on large planes (such as indoor walls or ceilings, outdoor buildings or signs). Compared to direct connections without the RIS, it can avoid obstacles by reflecting radio frequency (RF) energy around obstacles and creating a virtual line-of-sight (LoS) propagation path between the communication source and the target. In specific applications, the direction of the reflected beam can be changed by altering the phase weights of one or more elements in the RIS. Since the RIS is not connected to the gNB (5G base station), the RIS requires the gNB to indicate the configuration of its elements, such as phase adjustment, via the air interface. For example, there are two indication methods: the first is to indicate the codebook corresponding to the RIS beam, i.e., indication within a predefined beam, which has lower overhead. The second is to indicate the weights of the RIS elements, i.e., the phase weights on each element of the RIS, which has higher overhead due to the large number of elements in the RIS.

[0082] In related technologies, similar to RIS (Network Controlled Repeater), the NCR (Network Controlled Repeater) uses beam indication and time-bound DCI (Downlink Control Information) to control the NCR beam. For example, this DCI may include an indication: {beam1, time slot1}, ..., {beam xx, time slot xx}, meaning the beam indication is that the transmission time of beam1 is time slot1, ..., the transmission time of beam xx is time slot xx. DL (Downlink) reflection and UL (Uplink) reflection are also included. Because the DCI length is limited to only 7 bits, existing NCR standards only support 128-beam DCI indications for beam control.

[0083] For example, Figure 2 illustrates the average spectral efficiency of the RIS (Resonance Array) under different phase weights. As shown in Figure 2, the existing configuration indication for 128 beams may be sufficient for a small RIS array, but as the RIS array grows larger, the beam configuration indication may become insufficient, leading to a decrease in performance gain. Specifically, the average spectral efficiency of the RIS is best when using the ideal weights of the RIS beams (such as the phase weights obtained by the KR algorithm), followed by the case of using 1024 beams. When using 128 beams, the RIS gain is only 5%. It is evident that the indication mechanism using the existing codebook is limited by the resources of the PDCCH (physical downlink control channel), resulting in significant performance loss. In other words, using the PDCCH to control the RIS incurs a significant performance loss, making control ineffective and resulting in poor communication quality. MIMO (Multiple-Input Multiple-Output) refers to the technology of using multiple antennas to transmit and receive signals in the field of wireless communication. The KR (Kruskal) algorithm is a greedy algorithm used to find the optimal solution. Spectral efficiency (SE), also known as system capacity or bandwidth utilization, is a metric used to measure the effectiveness of a system and describes how much capacity it can provide. It is defined as the effective information transmission rate R of the system divided by the communication channel bandwidth B, i.e., the number of bits per second that can be transmitted on a channel per unit bandwidth. It represents the system's efficiency in utilizing spectrum resources, and its unit is bit / s / Hz.

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

[0085] In this embodiment, the first device transmits information controlling the Intelligent Metasurface (RIS) in two levels: first information and second information. The second information, used to indicate the specific configuration of each sub-array in the RIS, is transmitted via the Physical Downlink Shared Channel (PDSCH), essentially as service data and not subject to the length limitations of the DCI. Based on this, the RIS can obtain the second information through the first information and then adjust the configuration of its sub-arrays accordingly. Thus, the first device's control of the RIS is not limited by the RIS's specifications, achieving effective control and improving communication quality.

[0086] Before describing the technical solutions of the embodiments of this application, the operating platform of the control method for the intelligent metasurface of this application will first be described with reference to the accompanying drawings. Figure 3 is a structural example diagram of a communication system provided by an embodiment of this application. As shown in Figure 3, the embodiment of this application can be applied to wireless communication systems such as 5G and satellite communication. The first device is a device in the wireless communication system that can control RIS, such as a base station or other central node network device for MAC layer resource scheduling. The system architecture is shown in Figure 3. Wireless communication systems are usually composed of cells, each cell containing a base station (BS). The base station provides communication services to multiple mobile stations (MS). The base station contains a BBU (baseband unit) and an RRU (remote radio unit). The BBU and RRU can be placed in different locations. For example, the RRU can be moved remotely and placed in a high-traffic area, while the BBU is placed in a central equipment room. The BBU and RRU can also be placed in the same equipment 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 this application include, but are not limited to: narrowband Internet of Things (NB-IoT), 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 next-generation 5G mobile communication systems: eMBB, URLLC, and eMTC.

[0088] In this application, a base station is a device deployed in a radio access network to provide wireless communication functions for an MS. A base station can include various forms of macro base stations, micro base stations (also called small stations), relay stations, access points, etc. In systems employing different radio access technologies, the name of the device with base station functionality may differ; 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 ease of description, in all embodiments of this application, the device providing wireless communication functions for an MS is collectively referred to as a network device, base station, or BS. In this invention, a base station can also be called a base station device.

[0089] Referring again to Figure 3, the MS involved in the embodiments of this application may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem with wireless communication capabilities. The MS may also be called a terminal, and can also be a subscriber unit, cellular phone, smartphone, wireless data card, personal digital assistant (PDA) computer, tablet computer, wireless modem, handset, laptop computer, machine-type communication (MTC) terminal, etc. In this invention, the terminal may also be called a terminal device.

[0090] For example, Figure 3 above is an example of a wireless communication system provided in an embodiment of this application. The system includes a signal source (a base station and / or terminal as shown in Figure 3) and a smart metasurface RIS (not shown in Figure 3, but can be located between the terminal and the base station, see Figure 3). Specifically:

[0091] The information source is used to send first information to the RIS via the Physical Downlink Control Channel (PDCCH) and second information to the RIS via the Physical Downlink Shared Channel (PDSCH). The first information is used to indicate the acquisition method of the second information. The second information is used to indicate the first configuration information of each element in the RIS. The first configuration information is used to indicate the configuration of the RIS whose performance is higher than the lower bound of the RIS's performance.

[0092] The RIS is used to receive the first information; based on the first information, to obtain the second information sent by the information source through the Physical Downlink Shared Channel (PDSCH); and based on the second information, to configure each element in the RIS.

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

[0094] The information transceiver module 401 is used to receive first information sent by the information source through the physical downlink control channel PDCCH; wherein, the first information is used to indicate the acquisition method of the second information; the second information is used to indicate the first configuration information of each element in the RIS; the first configuration information is used to indicate the configuration of the RIS whose performance is higher than the lower bound of the RIS.

[0095] Information processing module 402 is used to obtain second information sent by the information source through the physical downlink shared channel (PDSCH) based on the first information;

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

[0097] For example, Figure 5 is a structural example diagram of a signal source provided in an embodiment of this application. As shown in Figure 5, a signal source may include:

[0098] The first transmitting module 501 is used to transmit first information to the intelligent metasurface RIS via the physical downlink control channel PDCCH, wherein the first information is used to indicate the acquisition method of the second information; the second information is used to indicate the first configuration information of each element in the RIS; and the first configuration information is used to indicate the configuration of the RIS whose performance is higher than the performance lower bound of the RIS.

[0099] The second transmitting module 502 is used to transmit second information to the RIS via the physical downlink shared channel PDSCH to instruct the RIS to configure each array in the RIS according to the second information.

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

[0101] The following describes in detail, with reference to Figures 6 to 9, a control method for an intelligent metasurface provided in the embodiments of this application.

[0102] For example, Figure 6 is a flowchart of a control method for a smart metasurface provided in an embodiment of this application. As shown in Figure 6, the control method for a smart metasurface provided in this embodiment of the 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 the first information to RIS through the physical downlink control channel PDCCH;

[0104] The Physical Downlink Control Channel (PDCCH) is used to transmit DCI (Digital Control Information), and can also transmit information such as Slot Format Indicator (SFI) and Preemption Indication (PI).

[0105] S602, the base station sends the second information to RIS through the Physical Downlink Shared Channel (PDSCH);

[0106] The first information is used to indicate the method of acquiring the second information. The second information is used to indicate the first configuration information of each element in the RIS; the first configuration information is used to indicate the configuration of the RIS whose performance is higher than the lower bound of the RIS's performance. That is, the first information can be regarded as the first-level DCI, and the second information can be regarded as the second-level DCI. The embodiments of this application classify the DCI used to control the RIS, and transmit different levels of DCI through different channels, thereby decoupling the configuration information used to control the RIS so as not to be limited by the DCI length, and realizing more effective control of the RIS.

[0107] In one example, the configuration information indicating the lower bound of the RIS's performance, i.e., the second configuration information, can be a codebook or beam indices. The codebook comprises a finite set of vectors representing the beams corresponding to the RIS. Each vector in the codebook represents a possible beam shape and can be used to assist in beamforming calculations. The beam index indicates the identifier of the beam corresponding to the RIS. When the second configuration information includes a codebook or beam indexes, the first configuration information can, for example, be the phase weights of one or more elements in the RIS. The beam adjustment precision corresponding to the phase weights of the elements is higher than that of the codebook. Based on this, configuring the elements in the RIS according to the first configuration information ensures that the RIS's performance is higher than that when configured according to the codebook.

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

[0109] S603, RIS obtains the second information sent by the source through the Physical Downlink Shared Channel (PDSCH) based on the first information;

[0110] S604, the RIS configures each element in the RIS based on the second information.

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

[0112] The first category indicates relevant information about 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 technique used in wireless channels to ensure the transmission quality of the link by adjusting the modulation method and coding rate of the wireless link transmission); the BLER (block error rate) threshold, etc.

[0113] The second category: control information indicating low overhead: codebook / beam index, low-overhead topology pattern, etc. The gNB transmits second-level DCI control information in the PDSCH that indicates high overhead, such as the specific weights of the RIS and the topology indication of high-overhead RIS arrays.

[0114] It should be noted that the two-level DCI indication of RIS can be applied to the following two scenarios: weight indication of RIS and topology indication of HRRIS (Hybrid Reflective Reconfigurable Intelligent Surface, which can selectively turn off the array to reduce power consumption).

[0115] In an optional example, the first information is also used to indicate that the RIS should not provide a response corresponding to the second information;

[0116] RIS is also used for:

[0117] After receiving the first information sent by the source through the physical downlink control channel (PDCCH), the target process is disabled based on the first information, wherein the target process is used to provide feedback response information.

[0118] For example, if the RIS fails to correctly detect the PDSCH on the resource block (i.e., fails to acquire the second information), it does not need to send an ACK (acknowledgment) or NACK (negative acknowledgment) to the gNB and can directly use the codebook in the PDCCH for data transmission. ACK and NACK can be, for example, HARQ (Hybrid Automatic Repeat Request). In one example, if the RIS successfully detects the PDSCH on the resource block (i.e., successfully acquires the second information), it also does not need to send an acknowledgment to the gNB.

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

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

[0121] In an optional example, the first information is also used to indicate second configuration information, which indicates the configuration of the RIS with performance at the lower bound of the performance.

[0122] RIS is also used for:

[0123] If the acquisition of the second information fails, the 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 detect the PDSCH correctly on a resource block, it can directly use the information indicated in the PDCCH for auxiliary communication. A resource block (RB) consists of 12 consecutive subcarriers in the frequency domain and one time slot in the time domain.

[0125] In one optional example, the first configuration information includes the phase weights of the arrays in the RIS; and / or,

[0126] In the case of HRRIS, a controllable hybrid reflection tunable smart metasurface with RIS as the array element, the first configuration information includes: a topology diagram of the array element in HRRIS.

[0127] For example, Figure 8 is one of the example diagrams of configuration information of a RIS provided in an embodiment of this application. As shown in Figure 8, the transmission of phase weights of the RIS in this embodiment decouples the RIS weights into a low-overhead part and a high-overhead part, which are transmitted in the PDCCH and PDSCH respectively. In the PDCCH, the gNB transmits the traditional low-overhead configuration information corresponding to the beam, such as the beam codebook, which is used to guarantee the lower bound of the transmission performance. In the PDSCH, the gNB can transmit high-overhead configuration information, such as detailed weight information, for example: ideal weights (e.g., the phase weights of the RIS obtained by the KR algorithm in the example of Figure 2) or the residual between the ideal weights and the codebook, i.e., the weight residual.

[0128] This embodiment uses a two-stage DCI to transmit the phase weights of the RIS. In this way, by decoupling the weights, the low-overhead codebook information can be transmitted in the PDCCH, while the high-overhead detailed weight information can be transmitted in the PDCSH, thereby achieving higher precision weight indication and improving the communication performance of RIS-assisted communication.

[0129] In an optional example, the first information is also used to indicate second configuration information, which indicates that the performance of the RIS is configured as a performance lower bound.

[0130] The first configuration information includes a first sub-configuration information obtained based on the second configuration information, wherein 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 is specifically used for:

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

[0133] Based on the initial configuration information, configure each array in the RIS.

[0134] In an optional example, where the second configuration information includes a codebook, the first sub-configuration information includes the residuals of the phase weights of the RIS.

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

[0136] For example, the RIS can be configured using the phase weights of the RIS subarrays indicated by the second-level DCI, or the complete topology of the RIS subarrays indicated by the second-level DCI; or, the RIS can obtain the phase weights of the RIS subarrays using a combination of the codebook indicated by the first-level DCI and the weight residuals indicated by the second-level DCI; or the RIS can be configured using a combination of the RIS subarray topologies indicated by the first-level DCI.

[0137] For example, Figure 9 is one of the example diagrams of configuration information for a RIS provided in an embodiment of this application. As shown in Figure 9, this embodiment addresses the case where the configuration information of the RIS is a topology diagram of the arrays in an HRRIS. The overall topology diagram of the arrays in the HRRIS is decoupled into a low-overhead topology pattern (i.e., the first sub-topology diagram of the arrays in the RIS) and a high-overhead topology pattern (i.e., the second sub-topology diagram of the arrays in the RIS), which are transmitted in the PDCCH and PDSCH respectively. The RIS array at the topology location indicated by any of the above topology diagrams is required to be either turned off or on. For example, in Figure 9, the shaded topology location represents on, and the white topology location represents off; or, the shaded topology location represents off, and the white topology location represents on. The specific configuration can be set according to application requirements, and this embodiment of the application does not impose any limitations on this.

[0138] In other words, regarding the topology indication of the RIS array: in one example, the gNB transmits a low-overhead topology pattern in the PDCCH to guarantee the lower bound of the RIS's transmission performance; the gNB transmits a high-overhead topology pattern in the PDSCH to enhance the RIS's transmission performance. In another optional example, the gNB transmits all topology patterns in the PDSCH; that is, the topology of the array in the HRRIS can be transmitted directly in the PDSCH as second information without decoupling.

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

[0140] In this embodiment, a two-stage DCI is used to transmit the topology information of the RIS array. Similar to the phase weights of the RIS array, by decoupling the RIS topology, low-overhead topology information is transmitted in the PDCCH, and high-overhead topology information is transmitted in the PDCSH, thereby ensuring that the configuration information of the RIS is more comprehensive and accurate, and improving the communication quality.

[0141] Furthermore, the systems and devices shown in Figures 3 to 5 of this application, in order to realize the functions of the intelligent metasurface control method described in the embodiments of this application, include hardware and / or software modules corresponding to the execution of each function. Based on the algorithm steps of the various examples described in 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 a hardware or computer software-driven manner 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 conjunction with the embodiments, but such implementation should not be considered beyond the scope of this application.

[0142] This embodiment also provides a computer storage medium storing computer instructions. When the computer instructions are executed on an electronic device, the electronic device performs the aforementioned method steps to implement the network management method described in the above embodiment.

[0143] This embodiment also provides a computer program product that, when run on a computer, causes the computer to perform the aforementioned steps to implement the network management method described in the above embodiment.

[0144] In this embodiment, the electronic device, computer storage medium, computer program product or chip are all used to execute the corresponding method provided above. Therefore, the beneficial effects that can be achieved can be referred to the beneficial effects of the corresponding method provided above, and will not be repeated here.

[0145] Any content in the various embodiments of this application, as well as any content in 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 recognize that the functions described in the embodiments of this application in one or more of the above examples 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 code on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any medium that facilitates the transfer of a computer program from one place to another. Storage media 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 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 scope of the technology 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, The method, applied to intelligent metasurfaces (RIS), includes: The system receives first information transmitted by a first device via the Physical Downlink Control Channel (PDCCH); wherein the first information is used to indicate the acquisition method of second information; the second information is used to indicate the first configuration information of each element in the RIS; and the first configuration information is used to indicate the configuration of RIS with performance higher than the lower bound of the performance of the RIS. Based on the first information, obtain the second information sent by the first device through the Physical Downlink Shared Channel (PDSCH); Based on the second information, the configuration of each array in the RIS is performed.

2. The method according to claim 1, characterized in that, The first information is also used to instruct the RIS to prohibit it from feeding back the response information corresponding to the second information; After receiving the first information transmitted by the first device through the Physical Downlink Control Channel (PDCCH), the method further includes: Based on the first information, the target process is disabled, wherein the target process is used to provide feedback on the response information.

3. The method according to claim 1 or 2, characterized in that, The first information is also used to indicate second configuration information, which is used to indicate the configuration of the RIS whose performance is the lower bound of the performance. After obtaining the second information sent by the first device through the Physical Downlink Shared Channel (PDSCH) based on the first information, the method further includes: If the acquisition of the second information fails, the 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 weights of the array elements in the RIS; and / or, In the case of the HRRIS, which is a controllable hybrid reflective adjustable smart metasurface with arrays of RIS, the first configuration information includes: a topology diagram of the arrays in the HRRIS.

5. The method according to any one of claims 1 to 4, characterized in that, The first information is also used to indicate second configuration information, which is used to indicate that the performance of the RIS is configured as the performance lower bound; The first configuration information includes a first sub-configuration information obtained based on the second configuration information, wherein 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 step of configuring each array in the RIS based on the second information includes: If the second information is successfully obtained, the first configuration information is determined based on the first sub-configuration information and the second configuration information; Based on the first configuration information, configure each array in the RIS.

6. The method according to claim 5, characterized in that, In the case where the second configuration information includes a codebook, the first sub-configuration information includes the residuals of the phase weights of the array elements in the RIS; If the second configuration information includes the first sub-topology map of the RIS array, the first sub-configuration information includes the second sub-topology map of the RIS array; the first sub-topology map and the second sub-topology map are a topology map obtained by dividing the total topology map of the RIS array, and the total topology map is used to indicate the activation of the RIS array.

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

8. A method for controlling an intelligent metasurface, characterized in that, Applied to a first device, the method includes: The first information is sent to the intelligent metasurface RIS via the physical downlink control channel PDCCH, wherein the first information is used to indicate the acquisition method of the second information; the second information is used to indicate the first configuration information of each element in the RIS; and the first configuration information is used to indicate the configuration of the RIS whose performance is higher than the lower bound of the performance of the RIS. The second information is sent to the RIS via the Physical Downlink Shared Channel (PDSCH) to instruct the RIS to configure each array 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 instruct the RIS to prohibit it from feeding back the response information corresponding to the second information.

10. The method according to claim 8 or 9, characterized in that, The first information is also used to indicate second configuration information, which is used to indicate the configuration of the RIS whose performance is the lower bound of the performance.

11. The method according to any one of claims 8 to 10, characterized in that, The first configuration information includes the phase weights of the array elements in the RIS; and / or, In the case of the HRRIS, which is a controllable hybrid reflective adjustable smart metasurface with arrays of RIS, the first configuration information includes: a topology diagram of the arrays in the HRRIS.

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

13. The method according to claim 12, characterized in that, In the case where the second configuration information includes a codebook, the first sub-configuration information includes the residuals of the phase weights of the array elements in the RIS; If the second configuration information includes the first sub-topology map of the RIS array, the first sub-configuration information includes the second sub-topology map of the RIS array; the first sub-topology map and the second sub-topology map are a topology map obtained by dividing the total topology map of the RIS array, and the total topology map is used to indicate the activation of the RIS array.

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

15. A control method for an intelligent metasurface, characterized in that, Applied to a wireless communication system, the system including a first device and a smart metasurface RIS, the method includes: The first device is configured 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 the acquisition method of the second information; the second information is used to indicate the first configuration information of each element in the RIS; and the first configuration information is used to indicate the configuration of RISs with performance higher than the lower bound of the performance of the RIS. The RIS is configured to receive the first information; obtain the second information sent by the first device through the Physical Downlink Shared Channel (PDSCH) based on the first information; and configure each element in the RIS based on the second information.

16. The method according to claim 15, characterized in that, The first information is also used to instruct the RIS to prohibit it from feeding back the response information corresponding to the second information; The RIS is also used for: After receiving the first information sent by the first device through the physical downlink control channel (PDCCH), the target process is disabled based on the first information, wherein the target process is used to provide feedback on the response information.

17. The method according to claim 15 or 16, characterized in that, The first information is also used to indicate second configuration information, which is used to indicate the configuration of the RIS whose performance is the lower bound of the performance. The RIS is also used for: If the acquisition of the second information fails, the 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 weights of the array elements in the RIS; and / or, In the case of the HRRIS, which is a controllable hybrid reflective adjustable smart metasurface with arrays of RIS, the first configuration information includes: a topology diagram of the arrays in the HRRIS.

19. The method according to any one of claims 15 to 18, characterized in that, The first information is also used to indicate second configuration information, which is used to indicate that the performance of the RIS is configured as the performance lower bound; The first configuration information includes a first sub-configuration information obtained based on the second configuration information, wherein 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: If the second information is successfully obtained, the first configuration information is determined based on the first sub-configuration information and the second configuration information; Based on the first configuration information, configure each array in the RIS.

20. The method according to claim 19, characterized in that, In the case where the second configuration information includes a codebook, the first sub-configuration information includes the residuals of the phase weights of the array elements in the RIS; If the second configuration information includes the first sub-topology map of the RIS array, the first sub-configuration information includes the second sub-topology map of the RIS array; the first sub-topology map and the second sub-topology map are a topology map obtained by dividing the total topology map of the RIS array, and the total topology map is used to indicate the activation of the RIS array.

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

22. A control device for an intelligent metasurface, characterized in that, The device, applied to intelligent metasurfaces (RIS), includes: The information transceiver module is used to receive first information sent by the first device through the physical downlink control channel (PDCCH); wherein, the first information is used to indicate the acquisition method of second information; the second information is used to indicate the first configuration information of each element in the RIS; the first configuration information is used to indicate the configuration of the RIS whose performance is higher than the lower bound of the performance of the RIS; The information processing module is used to obtain the second information sent by the first device through the Physical Downlink Shared Channel (PDSCH) based on the first information. The array configuration module is used to configure each array in the RIS according to the second information.

23. The apparatus according to claim 22, characterized in that, The first information is also used to instruct the RIS to prohibit it from feeding back the response information corresponding to the second information; The information transceiver module is also used for: After receiving the first information sent by the first device through the physical downlink control channel (PDCCH), the target process is disabled based on the first information, wherein the target process is used to provide feedback on the response information.

24. The apparatus according to claim 22 or 23, characterized in that, The first information is also used to indicate second configuration information, which is used to indicate the configuration of the RIS whose performance is the lower bound of the performance. 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 if the acquisition of the second information fails.

25. The apparatus according to any one of claims 22 to 24, characterized in that, The first configuration information includes the phase weights of the array elements in the RIS; and / or, In the case of the HRRIS, which is a controllable hybrid reflective adjustable smart metasurface with arrays of RIS, the first configuration information includes: a topology diagram of the arrays in the HRRIS.

26. The apparatus according to any one of claims 22 to 25, characterized in that, The first information is also used to indicate second configuration information, which is used to indicate that the performance of the RIS is configured as the performance lower bound; The first configuration information includes a first sub-configuration information obtained based on the second configuration information, wherein 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: If the second information is successfully obtained, the first configuration information is determined based on the first sub-configuration information and the second configuration information; Based on the first configuration information, configure each array in the RIS.

27. The apparatus according to claim 26, characterized in that, In the case where the second configuration information includes a codebook, the first sub-configuration information includes the residuals of the phase weights of the array elements in the RIS; If the second configuration information includes the first sub-topology map of the RIS array, the first sub-configuration information includes the second sub-topology map of the RIS array; the first sub-topology map and the second sub-topology map are a topology map obtained by dividing the total topology map of the RIS array, and the total topology map is used to indicate the activation of the RIS array.

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

29. A control device for an intelligent metasurface, characterized in that, Applied to a first device, the device includes: A first transmitting module is configured to transmit first information to a smart metasurface RIS via a physical downlink control channel (PDCCH), wherein the first information is used to indicate the acquisition method of second information; the second information is used to indicate the first configuration information of each element in the RIS; and the first configuration information is used to indicate the configuration of RISs with performance higher than the performance lower bound of the RIS. The second transmitting module is used to transmit the second information to the RIS via the Physical Downlink Shared Channel (PDSCH) to indicate the RIS root. Configure each array in the RIS according to the second information.

30. The apparatus according to claim 29, characterized in that, The first information is also used to instruct the RIS to prohibit it from feeding back the response information corresponding to the second information.

31. The apparatus according to claim 29 or 30, characterized in that, The first information is also used to indicate second configuration information, which is used to indicate the configuration of the RIS whose performance is the lower bound of the performance.

32. The apparatus according to any one of claims 29 to 31, characterized in that, The first configuration information includes the phase weights of the array elements in the RIS; and / or, In the case of the HRRIS, which is a controllable hybrid reflective adjustable smart metasurface with arrays of RIS, the first configuration information includes: a topology diagram of the arrays in the HRRIS.

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

34. The apparatus according to claim 33, characterized in that, In the case where the second configuration information includes a codebook, the first sub-configuration information includes the residuals of the phase weights of the array elements in the RIS; If the second configuration information includes the first sub-topology map of the RIS array, the first sub-configuration information includes the second sub-topology map of the RIS array; the first sub-topology map and the second sub-topology map are a topology map obtained by dividing the total topology map of the RIS array, and the total topology map is used to indicate the activation of the RIS array.

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

36. A wireless communication system, characterized in that, The system includes a first device and a smart metasurface RIS; The first device is configured 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 the acquisition method of the second information; the second information is used to indicate the first configuration information of each element in the RIS; and the first configuration information is used to indicate the configuration of RISs with performance higher than the lower bound of the performance of the RIS. The RIS is configured to receive the first information; obtain the second information sent by the first device through the Physical Downlink Shared Channel (PDSCH) based on the first information; and configure each element in the RIS based on the second information.

37. The system according to claim 36, characterized in that, The first information is also used to instruct the RIS to prohibit it from feeding back the response information corresponding to the second information; The RIS is also used for: After receiving the first information sent by the first device through the physical downlink control channel (PDCCH), the target process is disabled based on the first information, wherein the target process is used to provide feedback on the response information.

38. The system according to claim 36 or 37, characterized in that, The first information is also used to indicate second configuration information, which is used to indicate the configuration of the RIS whose performance is the lower bound of the performance. The RIS is also used for: If the acquisition of the second information fails, the configuration of each array in the RIS is performed according to the second configuration information indicated by the first information.

39. The system according to any one of claims 36 to 38, characterized in that, The first configuration information includes the phase weights of the array elements in the RIS; and / or, In the case of the HRRIS, which is a controllable hybrid reflective adjustable smart metasurface with arrays of RIS, the first configuration information includes: a topology diagram of the arrays in the HRRIS.

40. The system according to any one of claims 36 to 39, characterized in that, The first information is also used to indicate second configuration information, which is used to indicate that the performance of the RIS is configured as the performance lower bound; The first configuration information includes a first sub-configuration information obtained based on the second configuration information, wherein 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: If the second information is successfully obtained, the first configuration information is determined based on the first sub-configuration information and the second configuration information; Based on the first configuration information, configure each array in the RIS.

41. The system according to claim 40, characterized in that, In the case where the second configuration information includes a codebook, the first sub-configuration information includes the residuals of the phase weights of the array elements in the RIS; If the second configuration information includes the first sub-topology map of the RIS array, the first sub-configuration information includes the second sub-topology map of the RIS array; the first sub-topology map and the second sub-topology map are a topology map obtained by dividing the total topology map of the RIS array, and the total topology map is used to indicate the activation of the RIS array.

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

43. An electronic device, characterized in that, include: Processor and 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 the one or more processors, the one or more processors implement the method as described in any one of claims 1 to 21.

44. A computer-readable storage medium, characterized in that, The method includes a computer program, characterized in that, when the computer program is run on an electronic device, it causes the electronic device to perform the method as described in any one of claims 1 to 21.

45. A chip, characterized in that, The device includes one or more interface circuits and one or more processors; the interface circuits are configured to receive signals from the memory of the electronic device and send the signals to the processors, the signals including computer instructions stored in the memory; when the processor executes the computer instructions, the electronic device performs the method according to any one of claims 1 to 21.

46. ​​A computer program product, characterized in that, The method includes a computer program that, when executed by an electronic device, causes the electronic device to perform the method according to any one of claims 1 to 21.

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