Energy-saving communication method, device, electronic device, storage medium and base station

Abstract

The present disclosure provides an energy-saving communication method, device, electronic device, storage medium and base station, which relate to the field of communication technology. When the reconfigurable intelligent metasurface RIS is in a closed state, the direct uplink power corresponding to each backscattering IoT device within the coverage range of the RIS is obtained, and the first IoT device and the second IoT device are determined according to the direct uplink power. When the RIS is in an open state, the identification information of the first IoT device and the identification information of the second IoT device are sent to the RIS. In the above manner, backscattering IoT devices that require RIS-assisted transmission and backscattering IoT devices that do not require RIS-assisted transmission can be distinguished, which can reduce unnecessary energy consumption and resource overhead.

Description

Background Art

[0002] In IoT communication based on ambient backscatter (Ambc), IoT devices do not generate signals themselves, and can upload their own information only by reflecting signals transmitted from the environment. Reconfigurable Intelligent Surface (RIS) has the ability to control the reflected beam on demand. Using RIS to assist Ambc IoT communication can improve the information transmission performance of IoT devices in areas with weak / blind environmental signal coverage.

[0003] However, IoT devices have a simple structure and will receive and backscatter environmental signals of a specific frequency, making it impossible to distinguish between source signals and RIS reflected signals. In other words, it is impossible to determine whether IoT devices within the coverage of RIS need RIS to assist in enhancing source signals. When IoT devices do not need RIS to assist in enhancing source signals, it will cause a waste of resources and increase system energy consumption.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] The present disclosure provides an energy-saving communication method, device, electronic device and storage medium, which at least to a certain extent overcome the problems of resource waste and increased system energy consumption in related technologies.

[0006] Other features and advantages of the present disclosure will become apparent from the following detailed description, or may be learned in part by the practice of the present disclosure.

[0007] In a first aspect, an embodiment of the present disclosure provides an energy-saving communication method, the method comprising:

[0008] When the reconfigurable intelligent metasurface RIS is in a closed state, the direct uplink power corresponding to each backscattering IoT device located within the coverage range of the RIS is obtained, and a first IoT device and a second IoT device are determined according to the direct uplink power; wherein the first IoT device is a backscattering IoT device whose direct uplink power is greater than or equal to a preset minimum power value; and the second IoT device is a backscattering IoT device whose direct uplink power is less than the preset minimum power value;

[0009] When the RIS is in an on state, the identification information of the first Internet of Things device and the identification information of the second Internet of Things device are sent to the RIS.

[0010] In one embodiment of the present disclosure, obtaining the direct uplink power corresponding to each backscattering IoT device within the coverage area of ​​the RIS includes:

[0011] Sending downlink information to each backscatter IoT device within the coverage area of ​​the RIS;

[0012] Receive the uplink information reflected back by each backscattering IoT device according to the downlink information, and detect the direct uplink power from each uplink information.

[0013] In one embodiment of the present disclosure, after sending the identification information of the first IoT device and the identification information of the second IoT device to the RIS, the method further includes:

[0014] Determine an enhanced power value corresponding to each second IoT device, and send power enhancement indication information to the RIS; the power enhancement indication information is information instructing the RIS to increase the beam power of the transmit beam by an enhanced power value; the transmit beam is a beam that carries downlink information sent by the base station to the second IoT device;

[0015] The enhanced uplink link power corresponding to each second IoT device is obtained, and adjustment indication information is generated according to each enhanced uplink link power and the preset minimum power value, so that the RIS adjusts the enhanced power value corresponding to each second IoT device according to the adjustment indication information; wherein the enhanced uplink link power is obtained by the base station detecting the uplink information enhanced by the RIS.

[0016] In one embodiment of the present disclosure, obtaining the uplink enhanced link power corresponding to each second IoT device includes:

[0017] Sending downlink information to a second IoT device within the coverage of the RIS, so that the RIS increases the beam power of the transmission beam carrying the downlink information by an enhanced power value and then reflects it to the second IoT device;

[0018] Receive the uplink information returned by each second Internet of Things device, detect the uplink information of each second Internet of Things device, and obtain the uplink enhanced link power corresponding to each second Internet of Things device.

[0019] In one embodiment of the present disclosure, determining the enhanced power value corresponding to each second IoT device includes:

[0020] The total power value that can be allocated by the RIS is obtained, and the total power value is evenly allocated to each of the second IoT devices to obtain the enhanced power value.

[0021] In one embodiment of the present disclosure, the generating of adjustment indication information according to each uplink enhanced link power and the preset minimum power value includes:

[0022] For any one of the uplink enhanced link powers, if the any one of the uplink enhanced link powers is a null value, increasing the enhanced power value corresponding to the any one of the uplink enhanced link powers until the any one of the uplink enhanced link powers is not a null value;

[0023] If any one of the uplink enhanced link powers is greater than a preset value and less than the preset minimum power value, then increasing the enhanced power value corresponding to any one of the uplink enhanced link powers until any one of the uplink enhanced link powers is greater than or equal to the preset minimum power value;

[0024] If any one of the uplink enhanced link powers is greater than the preset maximum power value, the enhanced power value corresponding to the any one of the uplink enhanced link powers is reduced until the any one of the uplink enhanced link powers is greater than or equal to the preset minimum power value and less than or equal to the preset maximum power value, and adjustment indication information is generated.

[0025] In one embodiment of the present disclosure, the method further includes:

[0026] For any one of the uplink enhanced link powers, if the any one of the uplink enhanced link powers is greater than or equal to the preset minimum power value, and the uplink enhanced link power is less than or equal to the preset maximum power value, there is no need to adjust the enhanced power value.

[0027] In a second aspect, an embodiment of the present disclosure provides an energy-saving communication device, including:

[0028] A determination unit is used to obtain the direct uplink power corresponding to each backscattering IoT device located within the coverage range of the RIS when the reconfigurable intelligent metasurface is in a closed state, and determine the first IoT device and the second IoT device according to the direct uplink power; wherein the first IoT device is a backscattering IoT device whose direct uplink power is greater than or equal to a preset minimum power value; and the second IoT device is a backscattering IoT device whose direct uplink power is less than the preset minimum power value;

[0029] An indicating unit is used to send the identification information of the first Internet of Things device and the identification information of the second Internet of Things device to the RIS when the RIS is in an on state.

[0030] In one embodiment of the present disclosure, the determining unit is further configured to:

[0031] Sending downlink information to each backscatter IoT device within the coverage area of ​​the RIS;

[0032] Receive the uplink information reflected back by each backscattering IoT device according to the downlink information, and detect the direct uplink power from each uplink information.

[0033] In one embodiment of the present disclosure, the device further includes:

[0034] An adjustment unit, configured to determine an enhanced power value corresponding to each second IoT device, and to send power enhancement indication information to the RIS; the power enhancement indication information is information indicating that the RIS increases the beam power of the transmit beam by an enhanced power value; the transmit beam is a beam that carries downlink information sent by the base station to the second IoT device;

[0035] The enhanced uplink link power corresponding to each second IoT device is obtained, and adjustment indication information is generated according to each enhanced uplink link power and the preset minimum power value, so that the RIS adjusts the enhanced power value corresponding to each second IoT device according to the adjustment indication information; wherein the enhanced uplink link power is obtained by the base station detecting the uplink information enhanced by the RIS.

[0036] In one embodiment of the present disclosure, the adjustment unit is further configured to:

[0037] Sending downlink information to a second IoT device within the coverage of the RIS, so that the RIS increases the beam power of the transmission beam carrying the downlink information by an enhanced power value and then reflects it to the second IoT device;

[0038] Receive the uplink information returned by each second Internet of Things device, detect the uplink information of each second Internet of Things device, and obtain the uplink enhanced link power corresponding to each second Internet of Things device.

[0039] In one embodiment of the present disclosure, the adjustment unit is further configured to:

[0040] Obtain the total power value that can be allocated by the RIS, and evenly allocate the total power value to each of the second IoT devices to obtain the enhanced power value

[0041] In one embodiment of the present disclosure, the adjustment unit is further configured to:

[0042] For any one of the uplink enhanced link powers, if the any one of the uplink enhanced link powers is a null value, increasing the enhanced power value corresponding to the any one of the uplink enhanced link powers until the any one of the uplink enhanced link powers is not a null value;

[0043] If any one of the uplink enhanced link powers is greater than a preset value and less than the preset minimum power value, then increasing the enhanced power value corresponding to any one of the uplink enhanced link powers until any one of the uplink enhanced link powers is greater than or equal to the preset minimum power value;

[0044] If any one of the uplink enhanced link powers is greater than the preset maximum power value, the enhanced power value corresponding to the any one of the uplink enhanced link powers is reduced until the any one of the uplink enhanced link powers is greater than or equal to the preset minimum power value and less than or equal to the preset maximum power value, and adjustment indication information is generated.

[0045] In one embodiment of the present disclosure, the device further includes:

[0046] A silencing unit is used for adjusting the enhanced power value for any one of the uplink enhanced link powers if the any one of the uplink enhanced link powers is greater than or equal to the preset minimum power value and the uplink enhanced link power is less than or equal to the preset maximum power value.

[0047] In a third aspect, an embodiment of the present disclosure provides an electronic device, comprising: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to execute the method described in the first aspect above by executing the executable instructions.

[0048] In a fourth aspect, an embodiment of the present disclosure provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program implements the method described in the first aspect when executed by a processor.

[0049] In a fifth aspect, according to another aspect of the present disclosure, a computer program product or a computer program is also provided, the computer program product or the computer program includes a computer instruction, and the computer instruction is stored in a computer-readable storage medium. The processor of the computer device reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the computer device executes any of the above-mentioned methods.

[0050] In a sixth aspect, an embodiment of the present disclosure provides a base station, including: a memory, a transceiver, and a processor;

[0051] The memory is used to store computer programs;

[0052] a transceiver, for transmitting and receiving data under the control of the processor;

[0053] The processor is configured to read the computer program in the memory and perform the following operations:

[0054] When the reconfigurable intelligent metasurface RIS is in a closed state, the direct uplink power corresponding to each backscattering IoT device located within the coverage range of the RIS is obtained, and a first IoT device and a second IoT device are determined according to the direct uplink power; wherein the first IoT device is a backscattering IoT device whose direct uplink power is greater than or equal to a preset minimum power value; and the second IoT device is a backscattering IoT device whose direct uplink power is less than the preset minimum power value;

[0055] When the RIS is in an on state, the identification information of the first Internet of Things device and the identification information of the second Internet of Things device are sent to the RIS.

[0056] An energy-saving communication method provided by an embodiment of the present disclosure obtains the direct uplink power corresponding to each backscattering IoT device within the coverage of the RIS when the reconfigurable intelligent metasurface RIS is in the off state, and determines the first IoT device and the second IoT device according to the direct uplink power; wherein the first IoT device is a backscattering IoT device whose direct uplink power is greater than or equal to a preset minimum power value; the second IoT device is a backscattering IoT device whose direct uplink power is less than a preset minimum power value, and when the RIS is in the on state, the identification information of the first IoT device and the identification information of the second IoT device are sent to the RIS. In the above manner, the backscattering IoT devices that do not require assistance and the backscattering IoT devices that require assistance can be effectively distinguished, the total energy consumption of the RIS can be saved, and part of the saved energy consumption can be distributed to the backscattering IoT devices that require RIS assistance.

[0057] Determine the enhanced power value corresponding to each second IoT device, and send power enhancement indication information to RIS; the power enhancement indication information is information that instructs RIS to increase the enhanced power value of the beam power of the transmitting beam; the transmitting beam is a beam that carries the downlink information sent by the base station to the second IoT device. Obtain the uplink enhanced link power corresponding to each second IoT device, and generate adjustment indication information based on each uplink enhanced link power and the preset minimum power value, so that RIS adjusts the enhanced power value corresponding to each second IoT device according to the adjustment indication information; wherein the uplink enhanced link power is obtained by the base station detecting the uplink information after RIS enhancement. In the above manner, after determining the enhanced power value of the backscattering IoT device that requires RIS assistance, the enhanced power value can also be adjusted according to the uplink enhanced link power corresponding to each second IoT device, thereby improving the transmission performance of each second IoT device while reducing energy consumption.

[0058] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0060] Figure 1 A schematic diagram showing the structure of a communication network in an embodiment of the present disclosure is shown;

[0061] Figure 2 A schematic diagram of a process of energy-saving communication in an embodiment of the present disclosure is shown;

[0062] Figure 3 A schematic diagram showing a direct uplink power and a direct downlink power in an embodiment of the present disclosure is shown;

[0063] Figure 4 A schematic diagram showing an uplink enhanced link power and a downlink enhanced link power in an embodiment of the present disclosure is shown;

[0064] Figure 5 A schematic diagram showing another uplink enhanced link power and downlink enhanced link power in an embodiment of the present disclosure is shown;

[0065] Figure 6 A schematic diagram showing communication between a base station and a second Internet of Things device in an embodiment of the present disclosure is shown;

[0066] Figure 7 A schematic diagram showing the structure of an energy-saving communication device in an embodiment of the present disclosure is shown;

[0067] Figure 8 A schematic diagram showing the structure of an electronic device in an embodiment of the present disclosure is shown;

[0068] Fig. 9 A schematic structural diagram of a base station in an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0069] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the disclosure will be more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0070] In addition, the accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and their repeated description will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities can be implemented in software form, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.

[0071] Due to the simple structure of RIS, it is impossible to determine whether the IoT devices within the coverage area of ​​RIS need RIS to assist in enhancing the source signal. When the IoT devices do not need RIS to assist in enhancing the source signal, it will cause resource waste and increase system energy consumption.

[0072] Based on this problem, the present disclosure proposes an energy-saving communication method. When the reconfigurable intelligent metasurface RIS is in the closed state, the direct uplink power corresponding to each backscattering IoT device within the coverage of the RIS is obtained, and the first IoT device and the second IoT device are determined according to the direct uplink power; wherein the first IoT device is a backscattering IoT device whose direct uplink power is greater than or equal to a preset minimum power value; the second IoT device is a backscattering IoT device whose direct uplink power is less than a preset minimum power value, and when the RIS is in the open state, the identification information of the first IoT device and the identification information of the second IoT device are sent to the RIS. In the above manner, the backscattering IoT devices that do not require assistance and the backscattering IoT devices that require assistance can be effectively distinguished, the total energy consumption of the RIS can be saved, and part of the saved energy consumption can be distributed to the backscattering IoT devices that require RIS assistance.

[0073] The network architecture and business scenarios described in the embodiments of the present disclosure are intended to more clearly illustrate the technical solutions of the embodiments of the present disclosure, and do not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. It is known to those skilled in the art that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems.

[0074] Figure 1 1 is a schematic diagram of a communication network applicable to the embodiments of the present disclosure. The communication network includes a network-side device 101, a reconfigurable intelligent metasurface 102, and a backscattering Internet of Things device 103.

[0075] The network side device 101 may be a base station or a core network. The base station may be a base station of 5G and later versions (e.g., gNB, 5G NR NB, etc.), or a base station in other communication systems (e.g., eNB, WLAN access point, or other access point, etc.). The base station may be referred to as a node B, an evolved node B, an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a B node, an evolved B node (eNB), a home B node, a home evolved B node, a WLAN access point, a WiFi node, or some other suitable term in the field. As long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary. It should be noted that in the embodiment of the present invention, only a base station in an NR system is used as an example, but the specific type of the base station is not limited. The base station can communicate with the reconfigurable intelligent metasurface 102 and the backscattering IoT device 103 under the control of a base station controller, and the base station controller may be part of the core network or some base stations.

[0076] The network side device 101 may be a base station having a built-in backscatter transmitter and receiver, which is responsible for sending signals to the backscatter IoT device and receiving and demodulating uplink information uploaded by the backscatter IoT device.

[0077] The reconfigurable intelligent metasurface RIS can reversely adjust the incident beam and enhance the signal power. The reconfigurable intelligent metasurface panel size and control unit can be involved according to the actual coverage range, transmission power and other parameters to ensure that the deployment of the reconfigurable intelligent metasurface can cover all backscattering IoT devices, and the power can at least cover the backscattering IoT devices within the coverage range.

[0078] Backscatter IoT devices can be represented as tags. Figure 1There are three backscattering IoT devices communicating with the base station 101, namely tag1, tag2, and tag3.

[0079] The base station and tag1 can communicate directly, indicating that there is not only a downlink channel between the base station and tag1, but also that the downlink channel is not blocked by something, and the downlink information sent by the base station to tag1 can be reflected back by tag1 to the corresponding uplink information to reach the base station.

[0080] It should be noted that the base station can determine the number and location of tags in a known area, and each tag has corresponding identification information. Figure 1 It is represented by tag1, tag2, etc.

[0081] The base station can record downlink power and uplink power during communication with the tag. Downlink power refers to the power of the activated tag, which can be obtained through tag reporting. Uplink power refers to the power of the tag operation, which can be obtained by the base station detecting the received signal power, that is, detecting the uplink power from the received uplink information.

[0082] The purpose of recording downlink power and uplink power is to ensure the working status of the tag. The working status of the tag is verified by setting the downlink power threshold and the preset minimum power value.

[0083] For example, when the downlink power is greater than or equal to the downlink power threshold, it means that the Tag can be activated and can transmit information back to the base station, that is, the basic function of the Tag can be guaranteed at this time.

[0084] When the uplink power is greater than or equal to the preset minimum power value, it means that the tag can maintain good transmission performance, such as rate, reliability and other performance.

[0085] Figure 1 The specific uplink channel is not shown. Since the present disclosure mainly focuses on the situation that when the base station 101 sends downlink information to the Tag, it may be impossible to send the downlink information to the Tag. Therefore, RIS is needed for auxiliary transmission. For the Tag assisted by RIS, when the base station sends downlink information to the Tag, RIS will enhance the power of the transmission beam of the downlink information sent to the Tag. The specific enhanced value is the enhanced power value.

[0086] Since the Tag has a relatively high sensitivity requirement, a relatively large power value is required when activating the Tag through downlink information. However, when the Tag reflects the uplink information back to the base station, since the base station receives the uplink information returned by the Tag, only the beam carrying the uplink information needs to have a smaller power value. Therefore, when the Tag is activated, the method by which the uplink information is obtained is not limited in this disclosure. It is only necessary for the base station to detect the uplink power from the beam carrying the uplink information for configuring and adjusting the enhanced power value.

[0087] Those skilled in the art will know that Figure 1 The terminals, network side devices and backscattering IoT devices are only illustrative, and any number of terminals, network side devices and backscattering IoT devices may be provided according to actual needs. The embodiments of the present disclosure are not limited to this.

[0088] The present exemplary implementation is described in detail below with reference to the accompanying drawings and embodiments.

[0089] First, an energy-saving communication method is provided in an embodiment of the present disclosure. The method can be executed by any network-side device with computing and processing capabilities. The network-side device in the following process takes a base station as an example.

[0090] Figure 2 A flow chart of energy-saving communication in an embodiment of the present disclosure is shown as follows: Figure 2 As shown, the energy-saving communication method provided in the embodiment of the present disclosure includes the following steps:

[0091] S202: When the reconfigurable intelligent metasurface RIS is in a closed state, obtain the direct uplink power corresponding to each backscattering IoT device within the coverage of the RIS, and determine the first IoT device and the second IoT device according to the direct uplink power.

[0092] In a possible embodiment, since the tag structure in the prior art is simple, environmental signals of a specific frequency will be received and backscattered, and it is impossible to distinguish between the source signal and the RIS reflection signal, that is, it is impossible to determine whether the tag within the coverage range of the RIS needs RIS to assist in enhancing the source signal. When the tag does not need RIS to assist in enhancing the source signal, it will cause a waste of resources and increase the system energy consumption.

[0093] Therefore, the base station first sends an indication message to the RIS to turn off the RIS, and sends downlink information to each backscatter IoT device within the coverage of the RIS. The base station also receives uplink information reflected back by each backscatter IoT device based on the downlink information, and detects the direct uplink power from each uplink information.

[0094] It can be understood that when RIS is in the off state, the base station sends a signal to trigger and activate the tag, the tag receives and modulates the signal, and uploads its own information to the base station, and the base station records the direct uplink power. It can also record the direct downlink power. Figure 3 As shown, Figure 3 The direct downlink power and the direct uplink power are shown when a RIS is in the off state.

[0095] In the process of detecting the direct uplink power, the first IoT device and the second IoT device can be distinguished according to the direct uplink power. The first IoT device is a backscatter IoT device that does not require RIS for auxiliary transmission, and the second IoT device is a backscatter IoT device that requires RIS for auxiliary transmission.

[0096] like Figure 3 As shown, the direct uplink power of Tag1 is -50dBm, the direct uplink power of Tag3 is -40dBm, and the direct uplink power of Tag2 is displayed as a null value. According to the different direct uplink powers, it is judged which IoT devices are IoT devices that do not require RIS for auxiliary transmission. Taking the minimum preset power value of -48dBm as an example, it can be determined that Tag1 and Tag2 are both tags that require RIS assistance, while Tag3 is a tag that does not require RIS assistance.

[0097] Figure 3 The direct uplink power and direct downlink power of Tag2 in are NULL, where NULL represents a null value. This is because the downlink information sent by the base station to Tag2 does not activate Tag2, or other problems occur when Tag2 returns uplink information, resulting in the base station not receiving the uplink information and failing to detect the direct uplink power. A represents the direct downlink power of TagN, P W Indicates the direct uplink power of TagN.

[0098] Among them, the first Internet of Things device is a backscattering Internet of Things device whose direct uplink power is greater than or equal to a preset minimum power value; the second Internet of Things device is a backscattering Internet of Things device whose direct uplink power is less than the preset minimum power value.

[0099] It should be noted that there are two types of uplink power in the present disclosure. One type of uplink power is the uplink power that is not assisted by RIS during the communication between the base station and the tag. This type of uplink power can be called direct uplink power. The other type is the uplink power enhanced by RIS during the communication between the base station and the tag. This type of uplink power can be called uplink enhanced link power. Downlink power can also be divided into two types, namely direct downlink power and downlink enhanced link power.

[0100] S204: When the RIS is in an on state, the identification information of the first IoT device and the identification information of the second IoT device are sent to the RIS.

[0101] In a possible embodiment, when RIS is in a closed state, after determining the first IoT device and the second IoT device, the base station can communicate with the RIS and indicate the identification information of the first IoT device and the identification information of the second IoT device to the RIS. Then, in the subsequent communication process, the RIS can only enhance the transmission beam sent by the base station to the second IoT device, without enhancing the transmission beam sent by the base station to the first IoT device.

[0102] In this way, the energy consumption of RIS can be effectively saved, and the first IoT device can communicate directly with the base station without forwarding through RIS, which can also save energy. Since the total power of RIS is limited, the saved power can be used to enhance the transmission beam with relatively poor signal quality, so as to make the best use of it and improve the signal quality.

[0103] In a possible implementation, after distinguishing the first IoT device and the second IoT device, the beam power of the transmission beam of the base station for sending downlink information to each second IoT device can be enhanced in a targeted manner. The specific implementation is as follows:

[0104] Determine the enhanced power value corresponding to each second IoT device, send power enhancement indication information to the RIS, obtain the uplink enhanced link power corresponding to each second IoT device, and generate adjustment indication information according to each uplink enhanced link power and the preset minimum power value, so that the RIS adjusts the enhanced power value corresponding to each second IoT device according to the adjustment indication information.

[0105] In a possible embodiment, after distinguishing the first IoT device and the second IoT device, when the RIS is in an on state, the base station sends downlink information to each second IoT device again. This is the first time that downlink information is sent to the second IoT device after the first IoT device and the second IoT device are determined and when the RIS is in an on state. For ease of understanding, the transmission beam that carries the downlink information can be referred to as a first beam.

[0106] RIS can identify, based on the identification information of the second IoT device, that the beam power of the first beam needs to be enhanced, and can increase the beam power of the first beam by an enhanced power value according to the power enhancement indication information. Then, RIS increases the beam power of the first beam by the enhanced power value and forwards it to each second IoT device.

[0107] The power enhancement indication information is information indicating that the RIS increases the beam power of the transmission beam by an enhanced power value. The transmission beam is a beam that carries downlink information sent by the base station to the second IoT device.

[0108] It should be noted that backscatter transmits its own information by reflecting the source signal of the base station, and will experience two attenuations in the uplink and downlink channels. Therefore, strengthening the beam power of the transmitting beam can simultaneously enhance the downlink information sent by the receiving base station, that is, the power of the source signal of the base station, which can also be understood as the downlink power; it can also enhance the uplink power corresponding to the uplink information reflected back to the base station by the second IoT device.

[0109] The enhanced power value is the power value of the beam power enhancement of each first beam by RIS. The specific method for determining the enhanced power value is as follows:

[0110] The base station obtains the total power value that can be allocated by the RIS, and evenly allocates the total power value to each second IoT device to obtain an enhanced power value.

[0111] For example, if the second IoT devices include 10 and the total power value that can be allocated by RIS is 150 dBm, the enhanced power value is 15 dBm. The total power value that can be allocated by RIS can be expressed as P. If there are N backscatter IoT devices within the coverage of RIS, M first IoT devices, and (NM) second IoT devices, the enhanced power value can be expressed as P / (NM).

[0112] Each second IoT device will return uplink information to the base station based on the downlink information of the enhanced first beam. The base station receives the uplink information returned by each second IoT device, detects the uplink information of each second IoT device, and obtains the uplink enhanced link power corresponding to each second IoT device. The downlink enhanced link power can also be recorded, such as Figure 4 shown.

[0113] The uplink enhanced link power is obtained by the base station detecting the uplink information enhanced by RIS.

[0114] Figure 4 The uplink enhanced link power of Tag1 is -32dBm, and the downlink enhanced link power is -30dBm. The uplink enhanced link power of the first beam after RIS enhancement is significantly greater than the preset minimum power value. Figure 4 The uplink enhanced link power and downlink enhanced link power of Tag2 and Tag3 are also included. Figure 3 The downlink power of Tag1 and Figure 4 By comparing the downlink enhanced link power of Tag1 in Figure 1, it can be seen that the enhanced power value is 15dBm.

[0115] Figure 4 After the assistance of RIS, the uplink enhanced link power of Tag2 in the example is greater than the preset minimum power value. Tag3 is indicated by Work, indicating that Tag3 is a tag that does not require RIS assistance.

[0116] The base station generates adjustment indication information according to the enhanced link power, the purpose of which is to instruct the RIS to adjust the enhanced power value according to the adjustment indication information. The following is a method for adjusting the enhanced power value. After adjusting the enhanced power value in the following manner, the enhanced power value corresponding to each second IoT device can be added to the adjustment indication information and sent to the RIS.

[0117] For any one of the uplink enhanced link powers, the method of adjusting the enhanced power value specifically includes three adjustments, which are as follows:

[0118] (1) If any uplink enhanced link power is a null value, then the enhanced power value corresponding to any uplink enhanced link power is increased until any uplink enhanced link power is not a null value.

[0119] In a possible embodiment, the downlink enhanced link power can also be used to determine whether the beam power of a certain transmitting beam needs to be adjusted. For example, if the downlink enhanced link power is less than the downlink power threshold, the beam power of this transmitting beam is enhanced until the downlink enhanced link power is greater than the downlink power threshold, or until the downlink enhanced link power and the uplink enhanced link power are not null values.

[0120] (2) If any uplink enhanced link power is greater than a preset value and less than a preset minimum power value, increase the enhanced power value corresponding to any uplink enhanced link power until any uplink enhanced link power is greater than or equal to the preset minimum power value.

[0121] It should be noted that the preset value is not 0.

[0122] (3) If any one of the uplink enhanced link powers is greater than a preset maximum power value, reduce the enhanced power value corresponding to any one of the uplink enhanced link powers until any one of the uplink enhanced link powers is greater than or equal to a preset minimum power value and the uplink enhanced link power is less than or equal to a preset maximum power value, and generate adjustment indication information.

[0123] It should be noted that the purpose of adjusting the enhanced power value is to make each uplink enhanced power eventually between the preset minimum power value and the preset maximum power value, so the order of the above three adjustments can be swapped. For example, in order to facilitate the adjustment process, (3) can be performed first, and each uplink enhanced link power can be adjusted to be less than or equal to the preset maximum power value. In this way, the RIS can have a surplus of allocable power value, which can be more convenient when performing the next two adjustments. If the first two adjustments are performed first, it may be necessary to expand the capacity of the RIS, because in the process of enhancing the beam power of the first beam, the total power that can be allocated by the RIS has been allocated.

[0124] Exemplarily, the three adjustments mentioned above can be completed by the base station configuring one adjustment indication message to indicate the RIS, or can be completed in three times by indicating the RIS through three adjustment indication messages.

[0125] It should be noted that, in the process of adjusting the enhanced power value, priority is given to reducing the transmission beam whose uplink enhanced link power is greater than or equal to the preset maximum power value.

[0126] Finally, after the enhanced power value is adjusted according to the adjustment indication information, the base station sends downlink information to each second IoT device once. The transmission beam that carries the downlink information this time can be called the second beam. The second IoT device returns uplink information based on the downlink information sent by the base station this time. The base station obtains the adjusted uplink enhanced two-way power by detecting the uplink information this time. Figure 5 shown. Figure 5 The difference between the initial direct uplink power of each second IoT device and the adjusted uplink enhanced link power is also shown, which is the final enhanced power value. For example, the enhanced power value of Tag1 is P / (NM)-ΔP1, where ΔP1, ΔP2, etc. are the adjusted values ​​of the enhanced power value based on the adjustment indication information. Figure 4 The status in is the same, which is represented as Work. It is a backscatter IoT device that does not require RIS assistance. Therefore, its beam identification and enhanced power value are both represented as None, which can be understood as none.

[0127] In another possible embodiment, for any one of each uplink enhanced link power, if any one of the uplink enhanced link powers is greater than or equal to a preset minimum power value and less than or equal to a preset maximum power value, there is no need to adjust the enhanced power value.

[0128] It should be noted that in the present disclosure, the uplink information is obtained each time, and the enhanced power value can be adjusted according to the uplink information, and the downlink power is used as a reference. Since the beam power of the beam carrying the downlink information sent by the base station to the second IoT device is enhanced in the present disclosure, the specific value of the enhanced power value can be clearly seen through the change of the downlink power, and obtaining the downlink power can make the configuration and adjustment of the enhanced power value controllable.

[0129] In a possible embodiment, for the second IoT device, the base station sends a downlink to the second IoT device in the following manner: Figure 1 In the method of transmitting to Tag3, the beam power of the transmitting beam carrying the downlink information is enhanced through RIS, and then the transmitting beam is reflected to Tag3.

[0130] The second IoT device returns uplink information in the following three ways:

[0131] (1) The second IoT device directly returns uplink information to the base station, such as Figure 6 shown.

[0132] If there is an uplink channel between the second IoT device and the base station, and there is no obstruction between the uplink channels, before RIS assists in transmitting downlink information, the second IoT device cannot be reached only because the beam power of the transmit beam sent by the base station is insufficient. After RIS enhances the beam power of the transmit beam, the second IoT device returns the uplink information by reflecting the transmit beam of the downlink information. Therefore, after RIS enhances the transmit beam carrying the downlink information, it can directly return the uplink information to the base station in a reflection manner.

[0133] (2) The uplink information is then returned to the base station with the assistance of RIS, and only the phase and angle of the beam carrying the uplink information are adjusted.

[0134] If there is an uplink channel between the second IoT device and the base station, but there is an obstruction between the uplink channels, the second IoT device cannot directly return uplink information to the base station. This situation can be discovered in the process of adjusting the enhanced power value by adjusting the indication information.

[0135] If the second IoT device directly returns uplink information to the base station, but the base station cannot receive the uplink information returned by the second IoT device no matter how the enhanced power value is increased, then when the second IoT device returns the uplink information to the base station, the phase and angle of the beam carrying the uplink information can be adjusted with the assistance of RIS, so that the beam carrying the uplink information can avoid obstruction and return to the base station.

[0136] (3) RIS assists in returning the uplink information to the base station, adjusting the phase and angle of the beam carrying the uplink information and enhancing the beam power of the beam carrying the uplink information.

[0137] The energy-saving communication method disclosed in the present invention effectively screens the first IoT device that does not need RIS assistance, and instructs RIS not to assist the first IoT device during the communication between the base station and the backscatter IoT device. Only the second IoT device is assisted. Compared with the prior art, which uses RIS to assist backscatter IoT communication to enhance transmission performance, improve coverage, or minimize base station power through joint beam design, etc., it takes into account that when RIS covers multiple tags, some tags are in a weak coverage area, but the received signal power is sufficient to support their operation. These tags do not need to be assisted by RIS, thereby reducing these unnecessary energy consumption and reducing system power consumption.

[0138] Furthermore, the energy-saving communication method disclosed in the present invention also makes targeted adjustments to each second Internet of Things device, configures and adjusts the enhanced power value, further optimizes each enhanced power value, and ensures the communication performance of each second Internet of Things device with the base station while reducing energy consumption.

[0139] Based on the same inventive concept, the present disclosure also provides an energy-saving communication device, such as the following embodiment. Since the principle of solving the problem in the device embodiment is similar to that in the above method embodiment, the implementation of the device embodiment can refer to the implementation of the above method embodiment, and the repeated parts will not be repeated.

[0140] Figure 7 A schematic diagram of the structure of an energy-saving communication device in an embodiment of the present disclosure is shown. Figure 7 As shown, the energy-saving communication device 70 includes:

[0141] The determining unit 701 is used to obtain the direct uplink power corresponding to each backscattering IoT device within the coverage range of the RIS when the reconfigurable intelligent metasurface RIS is in a closed state, and determine the first IoT device and the second IoT device according to the direct uplink power; wherein the first IoT device is a backscattering IoT device whose direct uplink power is greater than or equal to a preset minimum power value; and the second IoT device is a backscattering IoT device whose direct uplink power is less than the preset minimum power value;

[0142] The indicating unit 702 is used to send the identification information of the first Internet of Things device and the identification information of the second Internet of Things device to the RIS when the RIS is in an on state.

[0143] In one embodiment of the present disclosure, the determining unit 701 is further configured to:

[0144] Send downlink information to each backscatter IoT device within the coverage area of ​​RIS;

[0145] Receive the uplink information reflected back by each backscattering IoT device based on the downlink information, and detect the direct uplink power from each uplink information.

[0146] In one embodiment of the present disclosure, the energy-saving communication device 70 further includes:

[0147] The adjustment unit 703 is used to determine the enhanced power value corresponding to each second IoT device, and send power enhancement indication information to the RIS; the power enhancement indication information is information indicating the RIS to increase the enhanced power value of the beam power of the transmit beam; the transmit beam is a beam that carries the downlink information sent by the base station to the second IoT device;

[0148] The enhanced uplink link power corresponding to each second IoT device is obtained, and adjustment indication information is generated according to each enhanced uplink link power and a preset minimum power value, so that the RIS adjusts the enhanced power value corresponding to each second IoT device according to the adjustment indication information; wherein the enhanced uplink link power is obtained by the base station detecting the uplink information enhanced by the RIS.

[0149] In one embodiment of the present disclosure, the adjustment unit 703 is further configured to:

[0150] Sending downlink information to a second IoT device within the coverage of the RIS, so that the RIS increases the beam power of the transmission beam carrying the downlink information by an enhanced power value and then reflects it to the second IoT device;

[0151] Receive uplink information returned by each second Internet of Things device, detect the uplink information of each second Internet of Things device, and obtain the uplink enhanced link power corresponding to each second Internet of Things device.

[0152] In one embodiment of the present disclosure, the adjustment unit 703 is further configured to:

[0153] Get the total power value that can be allocated by RIS, and evenly distribute the total power value to each second IoT device to obtain the enhanced power value

[0154] In one embodiment of the present disclosure, the adjustment unit 703 is further configured to:

[0155] For any uplink enhanced link power of each uplink enhanced link power, if any uplink enhanced link power is a null value, increase the enhanced power value corresponding to any uplink enhanced link power until any uplink enhanced link power is not a null value;

[0156] If any uplink enhanced link power is greater than a preset value and less than a preset minimum power value, then increase the enhanced power value corresponding to any uplink enhanced link power until any uplink enhanced link power is greater than or equal to the preset minimum power value;

[0157] If any uplink enhanced link power is greater than the preset maximum power value, reduce the enhanced power value corresponding to any uplink enhanced link power until any uplink enhanced link power is greater than or equal to the preset minimum power value and less than or equal to the preset maximum power value, and generate adjustment indication information.

[0158] In one embodiment of the present disclosure, the energy-saving communication device 70 further includes:

[0159] The silent unit 704 is used for adjusting the enhanced power value for any one of each of the enhanced uplink powers if any one of the enhanced uplink powers is greater than or equal to a preset minimum power value and the enhanced uplink power is less than or equal to a preset maximum power value.

[0160] Those skilled in the art will appreciate that various aspects of the present disclosure may be implemented as systems, methods or program products. Therefore, various aspects of the present disclosure may be specifically implemented in the following forms, namely: complete hardware implementation, complete software implementation (including firmware, microcode, etc.), or a combination of hardware and software, which may be collectively referred to herein as "circuits", "modules" or "systems".

[0161] Refer to the following Figure 8 The electronic device 800 according to this embodiment of the present disclosure is described. Figure 8 The electronic device 800 shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.

[0162] like Figure 8 As shown, the electronic device 800 is in the form of a general computing device. The components of the electronic device 800 may include but are not limited to: at least one processing unit 810, at least one storage unit 820, and a bus 830 connecting different system components (including the storage unit 820 and the processing unit 810).

[0163] The storage unit stores a program code, and the program code can be executed by the processing unit 810, so that the processing unit 810 executes the steps described in the above "Exemplary Method" section of this specification according to various exemplary embodiments of the present disclosure. For example, the processing unit 810 can execute the following steps in the above method embodiment, for example: when the reconfigurable intelligent metasurface RIS is in the off state, obtain the direct uplink power corresponding to each backscattering IoT device located within the coverage range of the RIS, and determine the first IoT device and the second IoT device according to the direct uplink power; wherein the first IoT device is a backscattering IoT device whose direct uplink power is greater than or equal to a preset minimum power value; the second IoT device is a backscattering IoT device whose direct uplink power is less than a preset minimum power value, and when the RIS is in the on state, send the identification information of the first IoT device and the identification information of the second IoT device to the RIS.

[0164] The storage unit 820 may include a readable medium in the form of a volatile storage unit, such as a random access memory unit (RAM) 8201 and / or a cache memory unit 8202 , and may further include a read-only memory unit (ROM) 8203 .

[0165] The storage unit 820 may also include a program / utility 8204 having a set (at least one) of program modules 8205, such program modules 8205 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0166] Bus 830 may represent one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

[0167] The electronic device 800 may also communicate with one or more external devices 840 (e.g., keyboards, pointing devices, Bluetooth devices, etc.), may also communicate with one or more devices that enable a user to interact with the electronic device 800, and / or communicate with any device that enables the electronic device 800 to communicate with one or more other computing devices (e.g., routers, modems, etc.). Such communication may be performed via an input / output (I / O) interface 850. Furthermore, the electronic device 800 may also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and / or public networks, such as the Internet) via a network adapter 860. As shown, the network adapter 860 communicates with other modules of the electronic device 800 via a bus 830. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the electronic device 800, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, etc.

[0168] Through the description of the above implementation, it is easy for those skilled in the art to understand that the example implementation described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (which can be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the implementation of the present disclosure.

[0169] In particular, according to an embodiment of the present disclosure, the process described above with reference to the flowchart can be implemented as a computer program product or a computer program, which includes computer instructions stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs any of the above energy-saving communication methods.

[0170] Fig. 9 FIG. 1 shows a schematic diagram of the structure of a base station provided by an embodiment of the present disclosure, that is, a schematic diagram of the structure of a base station. Fig. 9 As shown, the base station includes a processor 900, a memory 901 and a transceiver 902;

[0171] The processor 900 is responsible for managing the bus architecture and general processing, and the memory 901 can store data used by the processor 900 when performing operations. The transceiver 902 is used to receive and send data under the control of the processor 900. The transceiver 902 can be a backscatter transmitter and a backscatter receiver.

[0172] The bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 900 and memory represented by memory 901. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The processor 900 is responsible for managing the bus architecture and general processing, and the memory 901 may store data used by the processor 900 when performing operations.

[0173] The process disclosed in the embodiment of the present invention can be applied to the processor 900, or implemented by the processor 900. In the implementation process, each step of the signal processing process can be completed by the hardware integrated logic circuit or software instructions in the processor 900. The processor 900 can be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can implement or execute the methods, steps and logic block diagrams disclosed in the embodiment of the present invention. The general-purpose processor can be a microprocessor or any conventional processor, etc. The steps of the method disclosed in the embodiment of the present invention can be directly embodied as a hardware processor to be executed, or a combination of hardware and software modules in the processor can be executed. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 901, and the processor 900 reads the information in the memory 901 and completes the steps of the signal processing process in combination with its hardware.

[0174] Specifically, the processor 900 is used to read the program in the memory 901 and execute: when the reconfigurable intelligent metasurface RIS is in the off state, obtain the direct uplink power corresponding to each backscattering IoT device located within the coverage area of ​​the RIS, and determine the first IoT device and the second IoT device according to the direct uplink power; wherein the first IoT device is a backscattering IoT device whose direct uplink power is greater than or equal to a preset minimum power value; the second IoT device is a backscattering IoT device whose direct uplink power is less than the preset minimum power value; when the RIS is in the on state, send the identification information of the first IoT device and the identification information of the second IoT device to the RIS.

[0175] In an exemplary embodiment of the present disclosure, a computer-readable storage medium is also provided, which may be a readable signal medium or a readable storage medium. A program product capable of implementing the above method of the present disclosure is stored thereon. In some possible implementations, various aspects of the present disclosure may also be implemented in the form of a program product, which includes a program code, and when the program product is run on a terminal device, the program code is used to cause the terminal device to execute the steps according to various exemplary implementations of the present disclosure described in the above “Exemplary Method” section of this specification.

[0176] More specific examples of computer-readable storage media in the present disclosure may include, but are not limited to, an electrical connection having one or more conductors, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0177] In the present disclosure, a computer readable storage medium may include a data signal propagated in baseband or as part of a carrier wave, wherein a readable program code is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A readable signal medium may also be any readable medium other than a readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0178] Alternatively, the program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination of the foregoing.

[0179] In a specific implementation, the program code for performing the operations of the present disclosure may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, etc., and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., using an Internet service provider to connect through the Internet).

[0180] It should be noted that, although several modules or units of the device for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiments of the present disclosure, the features and functions of two or more modules or units described above can be embodied in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into multiple modules or units to be embodied.

[0181] In addition, although the steps of the method in the present disclosure are described in a specific order in the drawings, this does not require or imply that the steps must be performed in this specific order, or that all the steps shown must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps, etc.

[0182] Through the description of the above implementation, it is easy for those skilled in the art to understand that the example implementation described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (which can be a personal computer, a server, a mobile terminal, or a network device, etc.) to execute the method according to the implementation of the present disclosure.

[0183] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. An energy-saving communication method, characterized in that: The method comprises: When the reconfigurable intelligent metasurface RIS is in a closed state, the direct uplink power corresponding to each backscattering IoT device located within the coverage range of the RIS is obtained, and a first IoT device and a second IoT device are determined according to the direct uplink power; wherein the first IoT device is a backscattering IoT device whose direct uplink power is greater than or equal to a preset minimum power value; and the second IoT device is a backscattering IoT device whose direct uplink power is less than the preset minimum power value; When the RIS is in an on state, sending the identification information of the first IoT device and the identification information of the second IoT device to the RIS; The RIS enhances the transmission beam of the second Internet of Things device according to the identification information of the first Internet of Things device and the identification information of the second Internet of Things device.

2. The energy-saving communication method according to claim 1, characterized in that: The obtaining of the direct uplink power corresponding to each backscattering IoT device within the coverage area of ​​the RIS includes: Sending downlink information to each backscatter IoT device within the coverage area of ​​the RIS; Receive the uplink information reflected back by each backscattering IoT device according to the downlink information, and detect the direct uplink power from each uplink information.

3. The energy-saving communication method according to claim 1, characterized in that: After sending the identification information of the first IoT device and the identification information of the second IoT device to the RIS, the method further includes: Determine an enhanced power value corresponding to each second IoT device, and send power enhancement indication information to the RIS; the power enhancement indication information is information instructing the RIS to increase the beam power of the transmit beam by an enhanced power value; the transmit beam is a beam that carries downlink information sent by the base station to the second IoT device; The enhanced uplink link power corresponding to each second IoT device is obtained, and adjustment indication information is generated according to each enhanced uplink link power and the preset minimum power value, so that the RIS adjusts the enhanced power value corresponding to each second IoT device according to the adjustment indication information; wherein the enhanced uplink link power is obtained by the base station detecting the uplink information enhanced by the RIS.

4. The energy-saving communication method according to claim 3, characterized in that: The obtaining of the uplink enhanced link power corresponding to each second IoT device includes: Sending downlink information to a second IoT device within the coverage of the RIS, so that the RIS increases the beam power of the transmission beam carrying the downlink information by an enhanced power value and then reflects it to the second IoT device; Receive the uplink information returned by each second Internet of Things device, detect the uplink information of each second Internet of Things device, and obtain the uplink enhanced link power corresponding to each second Internet of Things device.

5. The energy-saving communication method according to claim 3, characterized in that: The determining of the enhanced power value corresponding to each second IoT device includes: The total power value that can be allocated by the RIS is obtained, and the total power value is evenly allocated to each of the second IoT devices to obtain the enhanced power value.

6. The energy-saving communication method according to claim 3, characterized in that: The generating adjustment indication information according to each uplink enhanced link power and the preset minimum power value includes: For any one of the uplink enhanced link powers, if the any one of the uplink enhanced link powers is a null value, increasing the enhanced power value corresponding to the any one of the uplink enhanced link powers until the any one of the uplink enhanced link powers is not a null value; If any one of the uplink enhanced link powers is greater than a preset value and less than the preset minimum power value, then increasing the enhanced power value corresponding to any one of the uplink enhanced link powers until any one of the uplink enhanced link powers is greater than or equal to the preset minimum power value; If any one of the uplink enhanced link powers is greater than the preset maximum power value, the enhanced power value corresponding to the any one of the uplink enhanced link powers is reduced until the any one of the uplink enhanced link powers is greater than or equal to the preset minimum power value and less than or equal to the preset maximum power value, and adjustment indication information is generated.

7. The energy-saving communication method according to claim 3, characterized in that: The method further comprises: For any one of the uplink enhanced link powers, if the any one of the uplink enhanced link powers is greater than or equal to the preset minimum power value, and the uplink enhanced link power is less than or equal to the preset maximum power value, there is no need to adjust the enhanced power value.

8. An energy-saving communication device, characterized in that: The device comprises: A determination unit is used to obtain the direct uplink power corresponding to each backscattering IoT device located within the coverage range of the RIS when the reconfigurable intelligent metasurface is in a closed state, and determine the first IoT device and the second IoT device according to the direct uplink power; wherein the first IoT device is a backscattering IoT device whose direct uplink power is greater than or equal to a preset minimum power value; and the second IoT device is a backscattering IoT device whose direct uplink power is less than the preset minimum power value; an indicating unit, configured to send identification information of the first IoT device and identification information of the second IoT device to the RIS when the RIS is in an on state; The adjustment unit is used for RIS to enhance the transmission beam of the second Internet of Things device according to the identification information of the second Internet of Things device.

9. An electronic device, characterized in that: include: processor; as well as A memory, configured to store executable instructions of the processor; The processor is configured to perform the method of any one of claims 1 to 7 by executing the executable instructions.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

11. A base station, characterized in that: include: Memory, transceiver, and processor; The memory is used to store computer programs; a transceiver, for transmitting and receiving data under the control of the processor; The processor is configured to read the computer program in the memory and perform the following operations: When the reconfigurable intelligent metasurface RIS is in a closed state, the direct uplink power corresponding to each backscattering IoT device located within the coverage range of the RIS is obtained, and a first IoT device and a second IoT device are determined according to the direct uplink power; wherein the first IoT device is a backscattering IoT device whose direct uplink power is greater than or equal to a preset minimum power value; and the second IoT device is a backscattering IoT device whose direct uplink power is less than the preset minimum power value; When the RIS is in an on state, sending the identification information of the first IoT device and the identification information of the second IoT device to the RIS; The RIS enhances the transmission beam of the second Internet of Things device according to the identification information of the second Internet of Things device.

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