Power supply method and related device

Abstract

The present application relates to the field of communications. Provided in the embodiments of the present application are a power supply method and a related device. In the method, a transmitter transmits radio frequency energy to a receiver on the basis of first transmission configuration information, and transmits first configuration information to the receiver, so as to instruct the receiver whether to enable or disable an MPPT function thereof, the first configuration information and the first transmission configuration information being determined on the basis of a first path loss between the transmitter and the receiver, a first energy demand parameter of the receiver, first MPPT power overhead of the receiver and first MPPT efficiency, and the first MPPT efficiency being used for indicating the degree of improvement in the reception efficiency of the receiver by the MPPT function of the receiver. The solution can enable an MPPT function of receivers at an appropriate time during radio frequency energy transmission while ensuring that energy requirements of the receivers are met, thus reducing additional power consumption overhead and effectively improving the efficiency of radio frequency energy transmission between transmitters and receivers.

Description

A power supply method and related equipment

[0001] This application claims priority to the Chinese patent application with application number 202311868832.0 filed with the State Intellectual Property Office of China on December 30, 2023, and priority to the Chinese patent application with the invention name “A power supply method and related equipment”, all contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present application relate to the field of communications, and in particular to a power supply method and related equipment. Background Art

[0003] To ensure long-term or even infinite lifespans for wireless communication terminals, power supply becomes a bottleneck. By designing an energy harvesting circuit to collect electromagnetic energy from the environment, the system can extend battery life and even replace batteries as a power source to provide the power required for wireless communication terminals.

[0004] To improve the energy transmission efficiency between the RF energy transmitter and the wireless communication terminal, the wireless communication terminal applies maximum power point tracking (MPPT) technology between its internal DC-to-DC converter (DC-DC converter) and the DC-DC converter's input source to stabilize the output voltage of the input source at the maximum power tracking voltage, achieving efficient power transmission between the input source and the DC-DC converter, thereby improving the received power of the wireless communication terminal and the energy transmission efficiency between the RF energy transmitter and the wireless communication terminal.

[0005] While maximum power point tracking (MPPT) technology can improve energy transmission efficiency, the MPPT module itself consumes power. When the MPPT module's benefit in increasing received power is less than or equal to its own power consumption, the module generates a negative benefit, resulting in lower energy transmission efficiency for the energy transmission system. Summary of the Invention

[0006] The present application provides a power supply method and related equipment, which can effectively improve the efficiency of radio frequency energy transmission between the transmitter and the receiver.

[0007] In a first aspect, a power supply method is provided. The method is applied to a transmitter and can be executed by the transmitter or by a chip in the transmitter.

[0008] The power supply method includes the following steps: the transmitter sends first configuration information to the receiver, the first configuration information being used to indicate whether to enable the maximum power point tracking (MPPT) function of the receiver. The transmitter transmits radio frequency energy to the receiver based on the first transmission configuration information. The first configuration information and the first transmission configuration information are determined based on a first path loss between the transmitter and the receiver, a first energy requirement parameter of the receiver, a first MPPT power overhead of the receiver, and a first MPPT efficiency. The first MPPT efficiency is used to indicate the extent to which the MPPT function of the receiver improves the receiving efficiency of the receiver.

[0009] The first energy requirement parameter is used to indicate the required power of the receiving end. The first energy requirement parameter may directly indicate the required power, i.e., the first energy requirement parameter is the required power of the receiving end. Alternatively, the first energy requirement parameter may indirectly indicate the required power, for example, by multiplying the average required power and the operating time. The required power of the receiving end can be obtained by multiplying the average required power and the operating time.

[0010] The first MPPT power overhead is the power overhead of the MPPT function of the receiving end.

[0011] As can be seen, in this solution, the transmitter transmits RF energy to the receiver based on the first transmission configuration information and sends the first configuration information to the receiver to instruct the receiver to enable or disable its MPPT function. When transmitting RF energy while meeting the receiver's energy requirements, this solution can timely enable the receiver's MPPT function, reducing additional power consumption and effectively improving the efficiency of RF energy transmission between the transmitter and receiver.

[0012] In a possible implementation of the first aspect, the first MPPT efficiency may include at least one of the following: a first receiving efficiency of the receiving end when the MPPT function of the receiving end is disabled, and a second receiving efficiency of the receiving end when the MPPT function of the receiving end is enabled; or a first parameter, the first parameter being obtained based on the first receiving efficiency and the second receiving efficiency. The first receiving efficiency and the second receiving efficiency are both used to indicate the magnitude of the RF energy receiving efficiency of the receiving end.

[0013] In a possible implementation of the first aspect, the first MPPT efficiency includes the first receiving efficiency and the second receiving efficiency, the first transmit power is greater than the second transmit power, and the first configuration information is used to instruct the receiving end to disable the MPPT function. The first transmit power is determined based on a first energy requirement parameter, a first path loss, and the first receiving efficiency. The second transmit power is determined based on the first energy requirement parameter, the first path loss, the first power overhead, and the second receiving efficiency.

[0014] The first transmit power is the minimum transmit power required to meet the first energy requirement parameter when the MPPT function of the receiving end is disabled. The second transmit power is the minimum transmit power required to meet the first energy requirement parameter when the MPPT function of the receiving end is enabled. If the first transmit power is greater than the second transmit power, the MPPT function of the receiving end can be disabled to avoid additional power consumption.

[0015] In a possible implementation of the first aspect, the first MPPT efficiency includes a first parameter, a ratio of the first power cost to the first energy requirement parameter is less than the first ratio, and the first configuration information is used to instruct to disable the MPPT function of the receiving end. The first ratio is a ratio between the first difference and the first receiving efficiency, and the first difference is a difference between the second receiving efficiency and the first receiving efficiency.

[0016] In this solution, when the ratio of the first power overhead to the first energy requirement parameter is less than the first ratio, the MPPT function of the receiving end can be turned off to avoid additional power consumption overhead.

[0017] In a possible implementation of the first aspect, the power supply method further includes the following steps: sending monitoring configuration information to the receiving end, the monitoring configuration information being used to indicate receiving end status parameters that the receiving end needs to monitor; and receiving monitoring information sent by the receiving end, the monitoring information including the receiving end status parameters.

[0018] The receiving end state parameter includes at least one of the following: a second energy requirement parameter of the receiving end, a second MPPT power overhead of the receiving end, a second MPPT efficiency, a first receiving power, or system state information of the receiving end. The second MPPT efficiency indicates the degree to which the MPPT function of the receiving end improves the receiving efficiency of the receiving end, and the first receiving power indicates the amount of RF energy received by the receiving end from the transmitting end.

[0019] In this solution, various receiving end status parameters of the receiving end can be monitored in real time, so that the transmitting end can update the transmission configuration information according to the receiving end status parameters and re-determine whether to enable the MPPT function configuration information of the receiving end.

[0020] In a possible implementation of the first aspect, the receiving end state parameter includes the first receiving power, and the power supply method further includes the following steps: the transmitting end sends second configuration information to the receiving end, where the second configuration information is used to indicate whether to enable the MPPT function of the receiving end. The transmitting end transmits radio frequency energy to the receiving end based on the second transmission configuration information. The second configuration information and the second transmission configuration information are determined based on a second path loss between the transmitting end and the receiving end, the first energy requirement parameter, the first MPPT power overhead, and the first MPPT efficiency. The second path loss is obtained based on the first receiving power.

[0021] In this solution, when only the receiving power of the receiving end changes, the path loss is updated based on the first receiving power to obtain the second path loss, and then the second transmission configuration information and the second configuration information of the transmitting end are determined based on the second path loss, the first energy requirement parameter, the first MPPT power overhead and the first MPPT efficiency.

[0022] In a possible implementation of the first aspect, the above-mentioned receiving end state parameter includes the above-mentioned second energy requirement parameter, the second MPPT power overhead and the second MPPT efficiency, and the above-mentioned power supply method further includes the following steps: the transmitting end sends third configuration information to the receiving end, and the third configuration information is used to indicate whether to enable the MPPT function of the receiving end. The transmitting end transmits radio frequency energy to the receiving end based on the third transmission configuration information. The third configuration information and the third transmission configuration information are determined based on the first path loss, the second energy requirement parameter, the second MPPT power overhead and the second MPPT efficiency.

[0023] In this solution, when only the energy demand, MPPT power overhead and MPPT efficiency of the receiving end change, the third transmission configuration information and the third configuration information of the transmitting end are determined based on the first path loss, the second energy demand parameter, the second MPPT power overhead and the second MPPT efficiency.

[0024] In a possible implementation of the first aspect, the receiving end state parameter includes the first received power, the second energy requirement parameter, the second MPPT power overhead, and the second MPPT efficiency, and the power supply method further includes the following steps:

[0025] The transmitting end sends fourth configuration information to the receiving end, the fourth configuration information being used to indicate whether to enable the MPPT function of the receiving end. The transmitting end transmits radio frequency energy to the receiving end based on the fourth transmission configuration information. The fourth configuration information and the fourth transmission configuration information are determined based on a second path loss between the transmitting end and the receiving end, a second energy requirement parameter, a second MPPT power overhead, and a second MPPT efficiency, where the second path loss is obtained based on the first received power.

[0026] In this solution, when the receiving power, energy demand, MPPT power overhead and MPPT efficiency of the receiving end all change, the path loss is updated based on the first receiving power to obtain the second path loss, and then the fourth transmission configuration information and the fourth configuration information of the transmitting end are determined based on the second path loss, the second energy demand parameter, the second MPPT power overhead and the second MPPT efficiency.

[0027] In a second aspect, the present application further provides a power supply method, which is applied to a receiving end and can be executed by the receiving end or by a chip in the receiving end.

[0028] The power supply method includes the following steps: the receiving end receives first configuration information from the transmitting end. The first configuration information is used to indicate whether the maximum power point tracking (MPPT) function of the receiving end is enabled. The receiving end receives radio frequency energy transmitted by the transmitting end based on the first transmission configuration information. The first transmission configuration information and the first configuration information are determined by the transmitting end based on a first path loss between the transmitting end and the receiving end, a first energy requirement parameter of the receiving end, a first MPPT power overhead, and a first MPPT efficiency. The first MPPT efficiency is used to indicate the extent to which the MPPT function of the receiving end improves the receiving efficiency of the receiving end.

[0029] In this solution, the transmitter transmits RF energy to the receiver based on first transmission configuration information and sends the first configuration information to the receiver. The receiver can then determine whether to enable or disable its MPPT function based on the first configuration information. This solution can appropriately enable the MPPT function of the receiver when transmitting RF energy while meeting the receiver's energy requirements, reducing additional power consumption and effectively improving the efficiency of RF energy transmission between the transmitter and receiver.

[0030] In a possible implementation of the second aspect, the above-mentioned first MPPT efficiency includes at least one of the following: the first receiving efficiency of the receiving end when the MPPT function of the receiving end is in the off state, and the second receiving efficiency of the receiving end when the MPPT function of the receiving end is in the on state; or, a first parameter, the first parameter is obtained based on the first receiving efficiency and the second receiving efficiency.

[0031] In a possible implementation of the second aspect, the power supply method further includes the following steps: the receiving end receives monitoring configuration information sent by the transmitting end. The monitoring configuration information indicates receiving end status parameters that the receiving end needs to monitor. The receiving end sends monitoring information to the transmitting end. The monitoring information includes the receiving end status parameters.

[0032] The receiving end state parameter includes at least one of the following: a second energy requirement parameter of the receiving end, a second MPPT power overhead of the receiving end, a second MPPT efficiency, a first receiving power, or system state information of the receiving end. The second MPPT efficiency indicates the degree to which the MPPT function of the receiving end improves the receiving efficiency of the receiving end, and the first receiving power indicates the amount of RF energy received by the receiving end from the transmitting end.

[0033] In a possible implementation of the second aspect, the receiving end state parameter includes the first received power, and the power supply method further includes the following steps: the receiving end receives second configuration information from the transmitting end. The second configuration information is used to indicate whether the MPPT function of the receiving end is enabled. The receiving end receives RF energy transmitted by the transmitting end based on the second transmission configuration information. The second transmission configuration information and the second configuration information are determined by the transmitting end based on a second path loss between the transmitting end and the receiving end, the first energy requirement parameter, the first MPPT power overhead, and the first MPPT efficiency, where the second path loss is obtained based on the first received power.

[0034] In a possible implementation of the second aspect, the receiving end state parameter includes the second energy requirement parameter, the second MPPT power cost, and the second MPPT efficiency. The power supply method further includes the following steps: the receiving end receives third configuration information from the transmitting end. The third configuration information is used to indicate whether the MPPT function of the receiving end is enabled. The receiving end receives RF energy transmitted by the transmitting end based on the third transmission configuration information. The third transmission configuration information and the third configuration information are determined by the transmitting end based on the first path loss, the second energy requirement parameter, the second MPPT power cost, and the second MPPT efficiency.

[0035] In a possible implementation of the second aspect, the above-mentioned receiving end state parameters include a first receiving power, a second energy requirement parameter, a second MPPT power overhead, and a second MPPT efficiency, and the above-mentioned power supply method further includes the following steps: the receiving end receives fourth configuration information from the transmitting end. The above-mentioned fourth configuration information is used to indicate whether the MPPT function of the receiving end is turned on. The receiving end receives the radio frequency energy transmitted by the transmitting end based on the fourth transmission configuration information. The above-mentioned fourth transmission configuration information and the fourth configuration information are determined by the transmitting end based on the second path loss, the second energy requirement parameter, the second MPPT power overhead, and the second MPPT efficiency between the transmitting end and the receiving end. The above-mentioned second path loss is obtained based on the above-mentioned first receiving power.

[0036] In a third aspect, the present application also provides a power supply method, which is applied to a radio frequency energy transmission system, wherein the radio frequency energy transmission system includes a transmitting end and a receiving end.

[0037] The power supply method includes the following steps: the transmitter sends first configuration information to the receiver, and the first configuration information is used to indicate whether to enable the maximum power point tracking (MPPT) function of the receiver. The receiver receives the first configuration information. The transmitter transmits radio frequency energy to the receiver based on the first transmission configuration information. The first configuration information and the first transmission configuration information are determined based on the first path loss between the transmitter and the receiver, the first energy requirement parameter of the receiver, the first MPPT power overhead of the receiver, and the first MPPT efficiency; the first MPPT efficiency is used to indicate the degree to which the MPPT function of the receiver improves the receiving efficiency of the receiver. The receiver receives radio frequency energy.

[0038] In a fourth aspect, the present application further provides a power supply method, comprising the following steps: obtaining multiple first received energy parameters of a receiving end. The first received energy parameters are used to indicate the amount of radio frequency energy received by the receiving end from the transmitting end, and the first received energy parameters are obtained when the maximum power point tracking (MPPT) function of the receiving end is enabled. Upon determining that the multiple first received energy parameters satisfy a first condition, the MPPT function of the receiving end is disabled.

[0039] The first condition is used to distinguish whether the MPPT function of the receiving end brings positive benefits or negative benefits.

[0040] In this solution, whether the first condition is met is determined based on multiple first receiving energy parameters of the receiving end. When the first condition is met, turning on the MPPT function at this time cannot bring positive benefits. The MPPT function of the receiving end can be turned off to reduce additional power consumption overhead and effectively improve the RF energy transmission efficiency between the transmitting end and the receiving end.

[0041] In a possible implementation of the fourth aspect, the above-mentioned first condition includes: the difference between at least two first receiving energy parameters among multiple first receiving energy parameters is less than or equal to the first threshold; and the average value of multiple first receiving energy parameters is less than or equal to the second threshold.

[0042] In a possible implementation of the fourth aspect, the first condition includes: an average value of multiple first receiving energy parameters is less than or equal to a second threshold.

[0043] In one possible implementation of the fourth aspect, the second threshold is the difference between the second difference and the first MPPT power overhead of the receiving end. The second difference is the difference between the second received energy parameter and the third received energy parameter. The second received energy parameter and the third received energy parameter are both used to indicate the amount of RF energy received by the receiving end from the transmitting end within the first time period. The second received energy parameter is obtained when the MPPT function of the receiving end is enabled. The third received energy parameter is obtained when the MPPT function of the receiving end is disabled.

[0044] In one possible implementation of the fourth aspect, the power supply method further includes the following steps: obtaining multiple fourth received energy parameters of the receiving end. The fourth received energy parameters are used to indicate the amount of radio frequency energy received by the receiving end from the transmitting end, and the fourth received energy parameters are obtained when the MPPT function of the receiving end is disabled. Upon determining that the multiple fourth received energy parameters satisfy the second condition, the MPPT function of the receiving end is enabled.

[0045] In this solution, when multiple fourth receiving energy parameters of the receiving end meet the second condition, turning on the MPPT function at this time can bring positive benefits, and the MPPT function of the receiving end can be turned on. This application can effectively improve the RF energy transmission efficiency between the transmitting end and the receiving end by turning on the MPPT function of the receiving end at the right time.

[0046] In a possible implementation of the fourth aspect, the second condition includes: a difference between at least two fourth receiving energy parameters among the multiple fourth receiving energy parameters is greater than or equal to a third threshold.

[0047] In a possible implementation of the fourth aspect, the above-mentioned receiving energy parameter includes total receiving power or average receiving power.

[0048] In a fifth aspect, the present application further provides a transmitting end, which includes a unit or module for executing the power supply method described in the first aspect.

[0049] Exemplarily, the transmitting end includes a sending module and a transmitting module.

[0050] The sending module is used to send first configuration information to the receiving end, where the first configuration information is used to indicate whether to enable the maximum power point tracking (MPPT) function of the receiving end.

[0051] A transmitting module is configured to transmit radio frequency energy to a receiving end based on first transmitting configuration information, wherein the first configuration information and the first transmitting configuration information are determined based on a first path loss between the transmitting end and the receiving end, a first energy requirement parameter of the receiving end, a first MPPT power overhead of the receiving end, and a first MPPT efficiency. The first MPPT efficiency is used to indicate the extent to which the MPPT function of the receiving end improves the receiving efficiency of the receiving end.

[0052] In a sixth aspect, the present application further provides a receiving end, which includes a unit or module for executing the power supply method described in the second aspect.

[0053] Exemplarily, the receiving end includes an information receiving module and an energy receiving module.

[0054] The information receiving module is configured to receive first configuration information from the transmitting end, wherein the first configuration information is used to indicate whether to enable the maximum power point tracking (MPPT) function of the receiving end.

[0055] An energy receiving module is configured to receive radio frequency energy transmitted by a transmitting end based on first transmission configuration information. The first transmission configuration information and the first configuration information are determined by the transmitting end based on a first path loss between the transmitting end and the receiving end, a first energy requirement parameter of the receiving end, a first MPPT power overhead, and a first MPPT efficiency. The first MPPT efficiency indicates the extent to which the MPPT function of the receiving end improves the receiving efficiency of the receiving end.

[0056] In the seventh aspect, the present application also provides a radio frequency energy transmission system, comprising the transmitting end described in the fifth aspect and the receiving end described in the sixth aspect.

[0057] In an eighth aspect, the power supply method of the fourth aspect can be executed by a terminal device such as a receiving end, or by a chip in a terminal device such as a receiving end. Therefore, the present application also provides a receiving end, which includes an acquisition module and a processing module.

[0058] The acquisition module is configured to acquire a plurality of first received energy parameters of the receiving end. The first received energy parameters are used to indicate the amount of radio frequency energy received by the receiving end from the transmitting end, and the first received energy parameters are acquired when the maximum power point tracking (MPPT) function of the receiving end is enabled.

[0059] The processing module is used to determine that multiple first receiving energy parameters meet a first condition and disable the MPPT function of the receiving end.

[0060] In the ninth aspect, the present application also provides a radio frequency energy transmission system, the system comprising a transmitting end and a receiving end, the receiving end being used to execute the power supply method described in the eighth aspect.

[0061] In the tenth aspect, the present application also provides a communication device, which includes a processor and a memory, wherein the processor and the memory are connected, wherein the memory is used to store program code, and the processor is used to call the program code to execute the power supply method as described in any one of the first to fourth aspects.

[0062] In the eleventh aspect, the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement the power supply method as described in any one of the first to fourth aspects.

[0063] In a twelfth aspect, the present application further provides a computer program product comprising instructions, which, when run on a computer, enables the computer to execute the power supply method as described in any one of the first to fourth aspects.

[0064] In the thirteenth aspect, the present application also provides a chip, which includes a processor and a data interface, and the processor reads instructions stored in the memory through the data interface to execute the power supply method as described in any one of the first to fourth aspects.

[0065] Optionally, as an implementation method, the chip may further include a memory, in which instructions are stored, and the processor is used to execute the instructions stored in the memory. When the instructions are executed, the processor is used to execute the power supply method as described in any one of the first to fourth aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] The following is an introduction to the drawings used in the embodiments of this application.

[0067] FIG1 is a schematic diagram of a radio frequency energy transmission system provided in an embodiment of the present application;

[0068] FIG2A is a schematic structural diagram of a radio frequency energy transmission system provided in an embodiment of the present application;

[0069] FIG2B is a schematic structural diagram of another radio frequency energy transmission system provided in an embodiment of the present application;

[0070] FIG3A is a schematic diagram of a flow chart of a power supply method provided in an embodiment of the present application;

[0071] FIG3B is a flow chart of another power supply method provided in an embodiment of the present application;

[0072] FIG4A is a schematic structural diagram of a receiving end provided in an embodiment of the present application;

[0073] FIG4B is an interactive flow chart of a power supply method provided in an embodiment of the present application;

[0074] FIG5A is a schematic flow chart of another power supply method provided in an embodiment of the present application;

[0075] FIG5B is a flow chart of another power supply method provided in an embodiment of the present application;

[0076] FIG6 is an interactive flow chart of another power supply method provided in an embodiment of the present application;

[0077] FIG7 is a schematic structural diagram of a transmitting end provided in an embodiment of the present application;

[0078] FIG8 is a schematic structural diagram of a receiving end provided in an embodiment of the present application;

[0079] FIG9 is a schematic structural diagram of a terminal device provided in an embodiment of the present application;

[0080] FIG10 is a schematic structural diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0081] The technical solution in this application will be described below with reference to the accompanying drawings.

[0082] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0083] The "at least one" mentioned in the embodiments of this application refers to one or more, and "plurality" refers to two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can be represented by: a, b, c, (a and b), (a and c), (b and c), or (a and b and c), where a, b, c can be single or multiple. "And / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can be represented by: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship. The serial numbers of the steps in the embodiments of this application (such as step S1, step S21, etc.) are only for distinguishing different steps and do not limit the order of execution between the steps.

[0084] Furthermore, unless otherwise specified, ordinal numbers such as "first" and "second" in the embodiments of this application are used to distinguish multiple objects and are not used to limit the order, timing, priority, or importance of multiple objects. For example, the first device and the second device are only for ease of description and do not indicate differences in structure, importance, etc. between the first and second devices. In some embodiments, the first device and the second device can also be the same device.

[0085] In the above embodiments, the term "when" can be interpreted to mean "if...", "after...", "in response to determining...", or "in response to detecting...", depending on the context. The above are merely optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the concepts and principles of the present application shall be included in the scope of protection of the present application.

[0086] Maximum power point tracking (MPPT) technology is used to achieve maximum power output under various circumstances. This technology is primarily used in wind turbines and photovoltaic solar systems, but its principles can also be applied to other energy sources with variable input power, such as solar energy transmission and thermophotovoltaics. Taking solar cells as an example, the basic principle of maximum power point tracking is to first monitor the current voltage and current of the solar cell through the control circuit through a control algorithm and identify the current maximum power point of the system. The control system then adjusts the output of the power conditioning system to the maximum power point to achieve maximum efficiency.

[0087] In addition, MPPT technology can improve the receiving efficiency of the receiving end of the RF energy transmission system. However, the MPPT module itself consumes power at the receiving end. When the MPPT module's benefit in increasing the received power is less than or equal to the power it consumes, the MPPT module brings negative benefits, resulting in lower energy transmission efficiency of the energy transmission system.

[0088] Therefore, the embodiments of the present application provide a power supply method that can effectively improve the energy transmission efficiency of the radio frequency energy transmission system.

[0089] The power supply method of the embodiment of the present application can be applied to all scenarios with radio frequency energy transmission requirements.

[0090] Refer to Figure 1, which is a structural schematic diagram of a radio frequency energy transmission system provided in an embodiment of the present application; the scenario includes a power source with an energy transmitting end (referred to as the transmitting end), a communication link, an energy transmission link and an energy receiving end (referred to as the receiving end).

[0091] The energy transmitter can be a digital TV signal tower, a frequency modulation (FM) radio station, a wireless access point (AP) for a mobile hotspot (Wireless Fidelity, Wi-Fi), a Bluetooth Low Energy (BLE) device, a SparkLink-Low Energy (SLE) device, a SparkLink-Basic (SLB) device, a cellular network signal station, a Radio Frequency Identification (RFID) site, or other various RF energy transmission sources. The power source can support both the transceiver and transmitter of communications and the transmission of RF energy signals. For example, the power source is a communications access point. The receiver can support both the transceiver and transmitter of communications and the reception of RF energy signals. The communication link is used for information exchange between the power source and the receiver. The energy transmission link is used for energy transmission between the power source and the receiver. The receiver can be any device terminal or communication terminal capable of receiving RF energy. The power source uses the energy transmitter to provide RF energy to the energy receiver.

[0092] Specifically, the application scenarios of the embodiments of the present application may include smart manufacturing, data centers, smart agriculture, smart homes and other scenarios.

[0093] In smart agriculture scenarios, the focus is on providing infrastructure and leveraging advanced technologies to track, monitor, automate, and analyze operations. Similar to smart home scenarios, low-energy, maintenance-free devices can be used for sensing and monitoring, such as soil moisture, soil fertility, temperature, wind speed, and plant growth. For example, sensing soil moisture can control irrigation systems to increase or decrease water supply to the land or crops. Asset management of agricultural facilities can also be accomplished by remotely reading tags attached to these facilities. Similarly, the low-energy, maintenance-free devices used for sensing and monitoring described above represent the receiving end in Figure 1.

[0094] For indoor positioning scenarios, reference tags with known locations can be densely deployed indoors to establish a navigation and positioning system with a wide range of potential applications, such as large shopping malls, shopping centers, parking lots, smart factories, warehouses, etc.

[0095] Take shopping malls, for example. They offer a wide range of services and products, including large supermarkets, a collection of retail stores, restaurants, banks, theaters, fitness and leisure facilities, underground parking, professional offices, and other amenities. Shopping malls can span hundreds of thousands of square meters and consist of one or more buildings, each with multiple floors above and below ground. While enjoying these various services, users often struggle to find vacant parking spaces, their cars, or items within their desired stores, restaurants, or supermarkets. Reference tags can be evenly distributed throughout the mall, at high density, such as intervals of two meters, on every floor and in every room. Handheld devices can communicate with the reference tags, enabling users to achieve indoor positioning using handheld devices such as smartphones.

[0096] The above-mentioned indoor navigation and positioning system can also be used in smart manufacturing, logistics / warehouses and smart homes in factories. In smart manufacturing, products on the production line or conveyor system should be accurately located so that the product can be identified at which step. In industrial areas, there are some dangerous areas containing toxic substances that are harmful to the health of workers. Workers can be labeled, and when workers enter the dangerous area, a safety alarm can be immediately issued based on the real-time location of the workers. For logistics / warehouses, inventory and attendance checks can also rely on such navigation and positioning systems to locate items or personnel. The above-mentioned reference tags and labels are equivalent to the receiving end in Figure 1. Exemplarily, the above-mentioned reference tags and labels can be RFID tags.

[0097] For smart home scenarios, many devices (such as smartphones, tablets, door locks, thermostats, home monitors, etc.) are interconnected, and low-energy, maintenance-free devices are needed for sensing and monitoring.

[0098] For example, sensors used for home environment perception, such as temperature sensors and humidity sensors, once the controlled nodes collect the perceived information, smart home devices such as heaters, air conditioners and humidifiers can automatically switch on and off accordingly to adjust the ambient temperature and humidity to a comfortable level.

[0099] For example, in a home security control scenario, if a gas detector detects a gas leak in the home, it can sound an alarm to alert the homeowner. If a smoke detector senses a fire, it can automatically sound an alarm. Motion detectors can also detect intruders and send an alert to the homeowner. Another scenario is to locate keys, wallets, and other personal items with attached identification tags (such as RFID tags).

[0100] The temperature sensor, humidity sensor, gas detector, smoke detector, motion detector or personal item with additional identification tag is a low-energy, maintenance-free device, equivalent to the receiving end in Figure 1, and the control node can be equivalent to a power source with a transmitting end.

[0101] In response to the various application scenarios mentioned above, the present application provides a power supply method, which is applied to a radio frequency energy transmission system. First, based on the path loss between the transmitter and the receiver, the energy demand parameters of the receiver, the MPPT power overhead of the receiver, and the MPPT efficiency of the receiver, the transmission configuration information and MPPT configuration information of the transmitter are determined. The MPPT configuration information is used to instruct the receiver to turn on or off its own MPPT function. The transmitter then transmits radio frequency energy to the receiver based on the above-mentioned transmission configuration information, and sends the MPPT configuration information to the receiver to instruct the receiver to turn on or off its own MPPT function. Therefore, when performing radio frequency energy transmission, the embodiment of the present application can timely turn on the MPPT function of the receiver, reduce additional power consumption overhead, and effectively improve the radio frequency energy transmission efficiency between the transmitter and the receiver.

[0102] The execution steps on the transmitter side of the power supply method can be executed by the transmitter or by a chip in the transmitter, and the execution steps on the receiver side of the power supply method can be executed by the receiver or by a chip in the receiver.

[0103] In addition, for the various application scenarios described above, embodiments of the present application also provide another power supply method, which is applied to a terminal device and can be executed by the terminal device or by a chip in the terminal device. The terminal device can be, for example, a receiving terminal, a third-party device, etc. The terminal device determines whether a preset condition is met based on several first received energy parameters of the receiving terminal. When the preset condition is met, the MPPT function of the receiving terminal can be controlled to be disabled to reduce additional power consumption, thereby effectively improving the efficiency of RF energy transmission.

[0104] Referring to Figure 2A, Figure 2A is a schematic diagram of the structure of a radio frequency energy transmission system provided in an embodiment of the present application; the radio frequency energy system involved in the embodiment of the present application includes a transmitter and a receiver, and both the transmitter and the receiver include a communication subsystem, an energy transmission subsystem, and a power subsystem. Among them, the communication subsystem is mainly used for information interaction between the transmitter and the receiver. In addition to the interaction of signaling and data in communication, it can also support information interaction for energy transmission link management and control. For example, the communication subsystem of the transmitter includes a transmitter. The communication subsystem of the receiver includes a receiver and a sensor.

[0105] The energy transfer subsystem is primarily responsible for transmitting RF energy between the transmitter and receiver. In Figure 2A, PA stands for power amplifier. For example, the energy transfer subsystem on the transmitter side includes a transmission processor, PA, and filter. The energy transfer subsystem on the receiver side includes a matching network, rectifier, DC-DC converter, and MPPT module.

[0106] The power subsystem is primarily used to increase energy at the transmitter and manage and store energy at the receiver. In Figure 2A, PMIC stands for Power Management Integrated Circuit. For example, the transmitter's power subsystem includes a power supply and a DC-DC converter. The receiver's power subsystem includes the PMIC and an energy storage device.

[0107] Refer to Figure 2B, which is a structural diagram of another RF energy transmission system provided in an embodiment of the present application; in the embodiment of the present application, the energy transmission subsystem at the receiving end includes a receiving antenna, a matching network, a rectifier, a DC-DC converter, an MPPT module arranged between the rectifier and the DC-DC converter, an energy storage element (such as a capacitor) and a load, etc.

[0108] Example 1

[0109] The following is a detailed description of a power supply method in an embodiment of the present application.

[0110] In the embodiment of the present application, the execution subject is a transmitter and a receiver. Referring to FIG3A , FIG3A is a flow chart of a power supply method provided in the embodiment of the present application; the power supply method includes the following steps:

[0111] 301. A transmitting end sends first configuration information to a receiving end.

[0112] The first configuration information is used to indicate whether to enable the MPPT function of the receiving end.

[0113] 302. The receiving end receives first configuration information.

[0114] Specifically, the receiving end performs MPPT configuration according to the received first configuration information, and configures the MPPT function of the receiving end to be turned on or off.

[0115] 303. The transmitting end transmits radio frequency energy to the receiving end based on the first transmission configuration information.

[0116] Exemplarily, the first transmission configuration information includes but is not limited to: output power of the transmitting end, antenna gain, etc.

[0117] Specifically, the above-mentioned first configuration information and the above-mentioned first transmission configuration information are determined based on the first path loss between the transmitting end and the receiving end, the first energy requirement parameter of the receiving end, the first MPPT power overhead of the receiving end and the first MPPT efficiency. The above-mentioned first MPPT efficiency is used to indicate the degree to which the MPPT function of the receiving end improves the receiving efficiency of the receiving end.

[0118] Exemplarily, the transmitting end or a third-party device may determine the first transmission configuration information and the first configuration information based on the first path loss, the first energy requirement parameter, the first MPPT power overhead, and the first MPPT efficiency. The third-party device sends the first transmission configuration information and the first configuration information to the transmitting end so that the transmitting end can perform steps 301 and 303.

[0119] Exemplarily, the third-party device may be a receiving end or other devices.

[0120] Exemplarily, the first path loss between the transmitting end and the receiving end may be determined based on the transmitting power of the transmitting end and the receiving power of the receiving end.

[0121] The first energy requirement parameter is used to indicate the required power of the receiving end. Different receiving ends have different energy requirements, and the energy requirements of the same receiving end may also vary at different times. The first energy requirement parameter may directly indicate the required power, i.e., the first energy requirement parameter is the required power of the receiving end. Alternatively, the first energy requirement parameter may indirectly indicate the required power, for example, by multiplying the average required power of the receiving end and the operating time of the receiving end. The required power of the receiving end can be calculated based on the product of the average required power and the operating time.

[0122] The first MPPT power cost mentioned above is the power cost of the MPPT function at the receiving end, that is, the power cost of the module responsible for the MPPT function (such as the MPPT module) at the receiving end. For example, the power cost of the MPPT function includes not only the power directly consumed by the MPPT module, but also other forms of energy loss due to heat loss, electromagnetic radiation, etc.

[0123] The first MPPT efficiency is used to indicate the degree to which the MPPT function of the receiving end improves the receiving efficiency of the receiving end. Similarly, the first MPPT efficiency can directly or indirectly indicate the above-mentioned improvement degree.

[0124] 304. The receiving end receives the radio frequency energy transmitted by the transmitting end.

[0125] In an embodiment of the present application, a transmitter transmits radio frequency energy to a receiver based on first transmission configuration information, and sends the first configuration information to the receiver to instruct the receiver to enable or disable its MPPT function. This solution can appropriately enable the MPPT function of the receiver when transmitting radio frequency energy while meeting the energy requirements of the receiver, reducing additional power consumption and achieving the most cost-effective radio frequency energy transmission solution, effectively improving the efficiency of radio frequency energy transmission between the transmitter and receiver.

[0126] In another possible implementation, referring to FIG3B , FIG3B is a flow chart of another power supply method provided in an embodiment of the present application; the power supply method further includes the following steps:

[0127] 305. The transmitting end sends monitoring configuration information to the receiving end, where the monitoring configuration information indicates the receiving end state parameters that the receiving end needs to monitor.

[0128] Specifically, the above-mentioned receiving end state information can be understood as static parameters of the monitored receiving end.

[0129] Correspondingly, the receiving end receives the monitoring configuration information sent by the transmitting end.

[0130] Specifically, after receiving the monitoring configuration information, the receiving end performs monitoring configuration to monitor changes in the receiving end state parameters. Exemplarily, monitoring parameter changes may be periodically acquiring the receiving end state parameters to determine whether they have changed.

[0131] 306. The receiving end sends a monitoring configuration response to the transmitting end.

[0132] Specifically, the receiving end sends a monitoring configuration response to the transmitting end to inform the transmitting end of the monitoring configuration result corresponding to the monitoring configuration information.

[0133] Furthermore, in a possible implementation, referring to FIG3B , the power supply method further includes the following steps:

[0134] 307. The receiving end sends monitoring information to the transmitting end, where the monitoring information includes receiving end status parameters.

[0135] Specifically, when the receiving end determines that the receiving end state parameter has changed, the receiving end sends monitoring information to the transmitting end. The above-mentioned receiving end state parameter includes at least one of the following: the second energy demand parameter of the receiving end, the second MPPT power overhead of the receiving end, the second MPPT efficiency, the first receiving power or the system status information of the receiving end. Among them, the second MPPT efficiency is used to indicate the degree to which the MPPT function of the receiving end improves the receiving efficiency of the receiving end, and the first receiving power is used to indicate the amount of radio frequency energy received by the receiving end from the transmitting end. The system status information of the receiving end may include system error information or power supply stop information indicating that the receiving end does not need energy.

[0136] Correspondingly, the transmitting end receives the monitoring information sent by the receiving end.

[0137] In an embodiment of the present application, the power supply strategy update is triggered by the receiving end. When the receiving end determines that the receiving end state parameter has changed, the changed receiving end state parameter is sent to the transmitting end, triggering a path loss update and / or a power supply strategy update based on the receiving end state parameter. At least one of the first path loss, the first energy requirement parameter, the first MPPT power overhead, and the first MPPT efficiency is replaced according to the receiving end state parameter to achieve a path loss update and / or a power supply decision (such as transmission configuration information, MPPT configuration information) update. For example, in the first example, when the receiving end state parameter includes the first received power, the second path loss is obtained according to the first received power, and the power supply decision is determined according to the second path loss, the first energy requirement parameter, the first MPPT power overhead, and the first MPPT efficiency. For a specific description of the first example, please refer to the description of steps 308 to 312 below. For another example, in the second example, when the receiving end state parameter includes the second energy requirement parameter, the second MPPT power overhead, and the second MPPT efficiency, the power supply decision is determined according to the first path loss, the second energy requirement parameter, the second MPPT power overhead, and the second MPPT efficiency. For a detailed description of the second example, refer to the description of steps 313 to 317 below. For another example, in the third example, when the receiving end state parameters include a first received power, a second energy requirement parameter, a second MPPT power overhead, and a second MPPT efficiency, a second path loss is obtained based on the first received power, and a power supply decision is determined based on the second path loss, the second energy requirement parameter, the second MPPT power overhead, and the second MPPT efficiency. For a detailed description of the third example, refer to the description of steps 318 to 322 below.

[0138] Compared with the traditional wireless power supply system, in the radio frequency energy transmission system of the embodiment of the present application, during the information interaction between the transmitter and the receiver, the transmitter performs actions such as collecting / updating path loss information and deciding / updating the power supply plan.

[0139] In one possible embodiment, the above-mentioned receiving end state parameters include the above-mentioned first receiving power, that is, only when the receiving power of the receiving end changes, the transmitting end determines the second transmission configuration information and the second configuration information of the transmitting end based on the second path loss between the transmitting end and the receiving end, the first energy requirement parameter, the first MPPT power overhead and the first MPPT efficiency.

[0140] The second path loss is obtained based on the first received power. The second configuration information is used to indicate whether to enable the MPPT function of the receiving end. Exemplarily, the second configuration information is the same as or different from the first configuration information.

[0141] Exemplarily, the second transmission configuration information and the second configuration information of the transmitting end may be determined by the transmitting end itself based on the second path loss between the transmitting end and the receiving end, the first energy requirement parameter, the first MPPT power overhead, and the first MPPT efficiency. Furthermore, exemplarily, the transmitting end may send the receiving end state parameter to a third-party device, and the third-party device may determine the second transmission configuration information and the second configuration information of the transmitting end based on the second path loss between the transmitting end and the receiving end, the first energy requirement parameter, the first MPPT power overhead, and the first MPPT efficiency. The third-party device then sends the second transmission configuration information and the second configuration information to the transmitting end.

[0142] Accordingly, the power supply method further includes the following steps:

[0143] 308. The transmitting end sends second configuration information to the receiving end.

[0144] Exemplarily, only when the transmitting end determines that the second configuration information is different from the first configuration information, the transmitting end sends the second configuration information to the receiving end to instruct the receiving end to configure its own MPPT function to be turned on or off according to the second configuration information.

[0145] As another example, regardless of whether the second configuration information is the same as or different from the first configuration information, the transmitting end sends the second configuration information to the receiving end, and the receiving end decides whether to perform MPPT function configuration based on the second configuration information and the first configuration information.

[0146] 309. The receiving end receives second configuration information from the transmitting end.

[0147] Exemplarily, when the transmitting end sends the second configuration information to the receiving end when the second configuration information is different from the first configuration information, the receiving end directly configures the MPPT function according to the second configuration information.

[0148] As another example, when the transmitting end sends the second configuration information to the receiving end regardless of whether the second configuration information is the same as or different from the first configuration information, if the receiving end determines that the first configuration information and the second configuration information are the same, the receiving end does not perform the configuration action and maintains the state of the MPPT function originally configured according to the first configuration information. Conversely, if the receiving end determines that the first configuration information and the second configuration information are different, the receiving end configures its own MPPT function according to the second configuration information.

[0149] 310. The receiving end sends a configuration response to the transmitting end.

[0150] Step 310 is optional. Exemplarily, after completing the MPPT function configuration according to the second configuration information, the receiving end sends a configuration response to the transmitting end to inform the transmitting end of the MPPT configuration result. Exemplarily, if the receiving end determines not to perform the configuration action, the receiving end directly sends the configuration response to the transmitting end.

[0151] 311. The transmitting end transmits radio frequency energy to the receiving end based on the second transmission configuration information.

[0152] Exemplarily, the second transmission configuration information is the same as or different from the first transmission configuration information.

[0153] Exemplarily, only when the transmitting end determines that the second transmission configuration information is different from the first transmission configuration information, the transmitting end sends radio frequency energy to the receiving end based on the second transmission configuration information.

[0154] As another example, regardless of whether the second transmission configuration information is the same as or different from the first transmission configuration information, the transmitting end sends radio frequency energy to the receiving end based on the second transmission configuration information.

[0155] 312. The receiving end receives radio frequency energy transmitted by the transmitting end based on the second transmission configuration information.

[0156] In an embodiment of the present application, when only the receiving power of the receiving end changes, the path loss is updated based on the first receiving power to obtain the second path loss, and then the second transmission configuration information and the second configuration information of the transmitting end are determined based on the second path loss, the first energy requirement parameter, the first MPPT power overhead and the first MPPT efficiency.

[0157] In another possible embodiment, the above-mentioned receiving end state parameters include the above-mentioned second energy requirement parameter, second MPPT power overhead and second MPPT efficiency, and the transmitting end determines the third transmission configuration information and third configuration information of the transmitting end based on the first path loss, the second energy requirement parameter, the second MPPT power overhead and the second MPPT efficiency.

[0158] The third configuration information is used to indicate whether to enable the MPPT function of the receiving end. Exemplarily, the third configuration information is the same as or different from the first configuration information.

[0159] Exemplarily, the transmitter itself may determine the third transmission configuration information and the third configuration information of the transmitter based on the first path loss, the second energy requirement parameter, the second MPPT power overhead, and the second MPPT efficiency. In another exemplary embodiment, the transmitter may send the receiving end state parameter to a third-party device, and the third-party device may determine the third transmission configuration information and the third configuration information of the transmitter based on the first path loss, the second energy requirement parameter, the second MPPT power overhead, and the second MPPT efficiency. The third-party device then sends the third transmission configuration information and the third configuration information to the transmitter.

[0160] Accordingly, the power supply method further includes the following steps:

[0161] 313. The transmitting end sends third configuration information to the receiving end.

[0162] For example, the detailed description of step 313 may refer to the description of step 308 and will not be repeated here.

[0163] 314. The receiving end receives third configuration information from the transmitting end.

[0164] For example, the detailed description of step 314 can refer to the description of step 309 and will not be repeated here.

[0165] 315. The receiving end sends a configuration response to the transmitting end.

[0166] Step 315 is optional. For example, the detailed description of step 315 can refer to the description of step 310 and will not be repeated here.

[0167] 316. The transmitting end transmits radio frequency energy to the receiving end based on the third transmission configuration information.

[0168] For example, the detailed description of step 316 can refer to the description of step 311 and will not be repeated here.

[0169] 317. The receiving end receives radio frequency energy transmitted by the transmitting end based on the third transmission configuration information.

[0170] In an embodiment of the present application, when only the energy demand, MPPT power overhead and MPPT efficiency of the receiving end change, the third transmission configuration information and the third configuration information of the transmitting end are determined based on the first path loss, the second energy demand parameter, the second MPPT power overhead and the second MPPT efficiency.

[0171] In another possible implementation, the receiving end state parameter includes the first receiving power, the second energy requirement parameter, the second MPPT power overhead, and the second MPPT efficiency.

[0172] The transmitting end determines fourth transmission configuration information and fourth configuration information of the transmitting end based on the second path loss between the transmitting end and the receiving end, the second energy requirement parameter, the second MPPT power overhead and the second MPPT efficiency.

[0173] The second path loss is obtained based on the first received power. The fourth configuration information is used to indicate whether to enable the MPPT function of the receiving end. Exemplarily, the fourth configuration information is the same as or different from the first configuration information.

[0174] Exemplarily, the transmitter itself may determine the fourth transmission configuration information and the fourth configuration information of the transmitter based on the second path loss, the second energy requirement parameter, the second MPPT power overhead, and the second MPPT efficiency. Furthermore, exemplarily, the transmitter may send the receiving end state parameter to a third-party device, and the third-party device may determine the fourth transmission configuration information and the fourth configuration information of the transmitter based on the second path loss, the second energy requirement parameter, the second MPPT power overhead, and the second MPPT efficiency. The third-party device then sends the fourth transmission configuration information and the fourth configuration information to the transmitter.

[0175] Accordingly, the power supply method further includes the following steps:

[0176] 318. The transmitting end sends fourth configuration information to the receiving end.

[0177] For example, the detailed description of step 318 can refer to the description of step 308 and will not be repeated here.

[0178] 319. The receiving end receives fourth configuration information from the transmitting end.

[0179] For example, the detailed description of step 319 can refer to the description of step 309 and will not be repeated here.

[0180] 320. The receiving end sends a configuration response to the transmitting end.

[0181] Step 326 is optional. For example, the detailed description of step 320 can refer to the description of step 310 and will not be repeated here.

[0182] 321. The transmitting end transmits radio frequency energy to the receiving end based on the fourth transmission configuration information.

[0183] For example, the detailed description of step 321 may refer to the description of step 311 and will not be repeated here.

[0184] 322. The receiving end receives radio frequency energy transmitted by the transmitting end based on the fourth transmission configuration information.

[0185] In an embodiment of the present application, when the receiving power, energy demand, MPPT power overhead and MPPT efficiency of the receiving end all change, the path loss is updated based on the first receiving power to obtain the second path loss, and then the fourth transmission configuration information and the fourth configuration information of the transmitting end are determined based on the second path loss, the second energy demand parameter, the second MPPT power overhead and the second MPPT efficiency.

[0186] In one possible embodiment, the above-mentioned first MPPT efficiency may include at least one of the following: the first receiving efficiency of the receiving end when the MPPT function of the receiving end is in the off state, and the second receiving efficiency of the receiving end when the MPPT function of the receiving end is in the on state; or, a first parameter, the first parameter is obtained based on the first receiving efficiency and the second receiving efficiency.

[0187] Specifically, the first receiving efficiency a is the receiving efficiency of the receiving end measured when the MPPT function of the receiving end is turned off, and the second receiving efficiency b is the receiving efficiency of the receiving end measured when the MPPT function of the receiving end is turned on.

[0188] Exemplarily, the first parameter includes a first ratio and / or a first difference. The first ratio is the ratio between the first difference and the first receiving efficiency a, the first difference is the difference between the second receiving efficiency and the first receiving efficiency, i.e., ba; the first ratio is

[0189] As another example, when the first parameter includes a first ratio and a first difference, the transmitting end may determine a first receiving efficiency and a second receiving efficiency based on the first ratio and the first difference.

[0190] The first MPPT efficiency may include the first difference and the first receiving efficiency a. The transmitting end may determine the second receiving efficiency based on the first difference and the first receiving efficiency. The first MPPT efficiency may also include the first difference and the second receiving efficiency b. The transmitting end may determine the first receiving efficiency based on the first difference and the second receiving efficiency.

[0191] In one possible embodiment, when the first MPPT efficiency includes the first receiving efficiency and the second receiving efficiency, or the first MPPT efficiency includes the first difference and the first receiving efficiency, or the first MPPT efficiency includes the first difference and the second receiving efficiency, or the first MPPT efficiency includes the first ratio and the first difference, that is, when the transmitting end directly or indirectly obtains the first receiving efficiency and the second receiving efficiency based on the first MPPT efficiency, the first transmit power is greater than the second transmit power, and the first configuration information is used to indicate that the MPPT function of the receiving end is turned off. The first transmit power is determined based on the first energy requirement parameter, the first path loss, and the first receiving efficiency. The second transmit power is determined based on the first energy requirement parameter, the first path loss, the first power overhead, and the second receiving efficiency.

[0192] Illustratively, the power supply method in the embodiment of the present application further includes:

[0193] The transmitting end or the third-party device determines the first transmit power based on the first energy requirement parameter, the first path loss and the first receiving efficiency.

[0194] Specifically, in this embodiment, the first energy requirement parameter of the receiving end obtained by the transmitting end or the third-party device at the current moment is P bat , the first path loss is P loss When the MPPT function of the receiving end is turned off, the minimum transmission power required by the transmitting end to meet the energy demand of the receiving end is the first transmission power x MPPTOff Satisfy: (x MPPTOff -P loss )·a=P bat ,

[0195] The transmitting end or the third-party device determines the second transmit power based on the first energy requirement parameter, the first path loss, the first power overhead and the second receiving efficiency.

[0196] Specifically, in this embodiment, the first power cost of the MPPT function of the receiving end is P MPPT When the MPPT function of the receiving end is turned on, the minimum transmission power required by the transmitting end to meet the energy demand of the receiving end is the second transmission power x MPPTOn Satisfy: (x MPPTOn -P loss )·bP MPPT =P bat ,

[0197] The first transmit power is greater than the second transmit power, and the transmitting end or the third-party device determines that the first configuration information indicates to disable the MPPT function of the receiving end.

[0198] Specifically, x MPPTOff >x MPPTOn When the transmitter or third-party device can determine that turning off the MPPT function of the receiver can also meet the energy demand of the receiver, the transmitter will use the first transmission power x MPPTOff On the contrary, the transmitter or third-party equipment can determine that it is necessary to turn on the MPPT function of the receiver at this time, and the transmitter will transmit at the second transmission power x MPPTOn Emitting radio frequency energy.

[0199] Therefore, the method of the embodiment of the present application can avoid additional power consumption. In addition, the embodiment of the present application predicts the minimum transmission power in advance, which can reduce the impact of the transmission power on the environment.

[0200] For example, after the transmitter determines a transmit power (e.g., a first transmit power or a second transmit power) for transmitting RF energy, the transmit power being the air interface power. Based on the transmit power, the transmitter can determine first transmit configuration information, such as the output power and antenna gain of the transmitter. For example, given the air interface power, the specific method for determining the output power and antenna gain is not particularly limited.

[0201] In another possible embodiment, when the first MPPT efficiency includes the first receiving efficiency and the second receiving efficiency, or the first MPPT efficiency includes the first ratio, or the first MPPT efficiency includes the first difference and the first receiving efficiency, the ratio of the first power cost to the first energy requirement parameter is less than the first ratio, and the first configuration information is used to instruct to disable the MPPT function of the receiving end to avoid additional power consumption. The first ratio is the ratio between the first difference and the first receiving efficiency, and the first difference is the difference between the second receiving efficiency and the first receiving efficiency.

[0202] Illustratively, the power supply method in the embodiment of the present application further includes:

[0203] The ratio of the first power overhead to the first energy requirement parameter is less than the first ratio, and the transmitting end or the third-party device determines that the first configuration information indicates to turn off the MPPT function of the receiving end.

[0204] Specifically, the first ratio can be obtained based on the first receiving efficiency and the second receiving efficiency. Alternatively, the first ratio can be obtained based on the first difference and the first receiving efficiency.

[0205] In this embodiment, based on the above x MPPTOff >x MPPTOn , it can be deduced that the first power consumption and the first energy requirement parameters satisfy:

[0206] Therefore, in this embodiment, the ratio of the first power consumption to the first energy requirement parameter is When the ratio is less than the first ratio, the transmitting end or the third-party device determines that the MPPT function of the receiving end can be turned off, that is, the first configuration information instructs to turn off the MPPT function of the receiving end.

[0207] Accordingly, after determining the first configuration information, the following may be used:

[0208] or To calculate the transmit power corresponding to the transmitting end at this time, and then determine the first transmit configuration information such as the output power and antenna gain of the transmitting end based on the transmit power.

[0209] For example, the transmitting end or a third-party device can estimate the first path loss based on the second receiving power and the transmitting power of the transmitting end. The path loss can be referred to as path loss. In this embodiment, the transmitting end determines the first path loss as an example. The second receiving power of the receiving end is P r , the power transmitted by the transmitter itself is P t , then the path loss PL of the communication subsystem at the receiving end satisfies:

[0210] In this embodiment, refer to Figure 4A, which is a structural diagram of a receiving end provided by an embodiment of the present application; the communication subsystem and energy transmission subsystem of the receiving end can use different receiving antennas and RF front-ends. Therefore, there can be energy conversion between the communication subsystem and the energy transmission subsystem of the receiving end. The energy reported by the communication subsystem is converted to the antenna end of the communication subsystem, and then converted to the received energy of the energy transmission subsystem through the difference in antenna gain of the two subsystems. The hardware solution of the receiving end determines the conversion rate between the two. Different conversion rates c exist for different receiving ends at different receiving energy points. Therefore, the first path loss PL′ satisfies:

[0211] Referring to FIG4B , FIG4B is an interactive flow chart of a power supply method provided in an embodiment of the present application; the power supply method includes the following steps:

[0212] 401. The transmitter sends a beacon to the receiver.

[0213] During the device discovery phase, when the receiver has energy needs, it can establish a connection with the transmitter by responding to the beacon signal sent by the transmitter.

[0214] 402. The receiving end sends a beacon response to the transmitting end.

[0215] Exemplarily, the receiving end may carry the second receiving power in the beacon response.

[0216] 403. The transmitter sends a connection establishment request to the receiver.

[0217] 404. The receiving end sends a connection establishment response to the transmitting end.

[0218] As another example, during the process of establishing a connection between the receiving end and the transmitting end, the receiving end may carry the second receiving power in a connection establishment response, and the transmitting end may calculate the path loss based on the second receiving power to obtain the first path loss.

[0219] Optionally, referring to FIG4B , after obtaining the first path loss, in an embodiment of the present application, identity authentication may be performed between the transmitting end and the receiving end, including authentication and encryption processes.

[0220] 405. The transmitter sends a static parameter read request to the receiver. For example, after obtaining the first path loss, the transmitter needs to read the static parameters of the receiver before powering on. The transmitter may send a static parameter read request to the receiver to read data. For example, the transmitter may read the first energy requirement parameter of the receiver, the first MPPT power overhead, and the first MPPT efficiency of the receiver, to determine the first transmission configuration information and the first configuration information of the transmitter based on the first path loss, the first energy requirement parameter of the receiver, the first MPPT power overhead, and the first MPPT efficiency of the receiver.

[0221] 406. The receiving end returns a parameter reading response to the transmitting end.

[0222] The parameter read response includes the static parameters of the receiving end. In this embodiment, the transmitting end may request to read the static parameters of the receiving end by using dedicated signaling or by adding parameter information to existing signaling.

[0223] In the embodiment of the present application, the static parameters of the receiving end read by the transmitting end may be factory configuration values ​​of the receiving end, such as the power consumption required by the MPPT function that can be determined at the factory. The static parameters of the receiving end may also be parameter values ​​of the receiving end in its current state, such as the energy required by the receiving end in the current energy transmission state.

[0224] 4B , the static parameters of the receiving end may further include the latest second receiving power, and the transmitting end may update the first path loss based on the latest second receiving power.

[0225] A power supply decision is made based on the first energy requirement parameter of the updated first path loss receiving end, the first MPPT power overhead and the first MPPT efficiency of the receiving end, that is, the first transmission configuration information and the first configuration information of the transmitting end are determined.

[0226] 407. The transmitting end sends the first configuration information to the receiving end.

[0227] The transmitting end can use the first configuration information to instruct the receiving end to turn on or off its own MPPT function.

[0228] 408. The receiving end returns a configuration response to the transmitting end.

[0229] Optionally, after turning on or off its own MPPT function, the receiving end may return a configuration response to the transmitting end to inform the transmitting end of the MPPT configuration result.

[0230] In addition, in wireless communication systems, the receiving power of the receiving end is affected by many factors, including signal transmission distance, channel attenuation, multipath effect, etc. Over time, these factors may change, resulting in changes in the receiving power of the receiving end. Similarly, the energy demand, MPPT power overhead, and MPPT efficiency of the receiving end may also change. Therefore, the transmitting end can obtain the parameters of the receiving end after the change (such as receiving efficiency, energy demand, MPPT power overhead, and MPPT efficiency), and update the path loss and power supply decisions (such as transmission configuration information, MPPT configuration information) based on the changed parameters. Therefore, the power supply method also includes:

[0231] 409. The transmitting end sends monitoring configuration information to the receiving end. The monitoring configuration information indicates the receiving end state parameters that the receiving end needs to monitor.

[0232] 410. The receiving end returns a monitoring configuration response to the transmitting end.

[0233] Specifically, after receiving the monitoring configuration information, the receiving end performs monitoring configuration; the receiving end sends a monitoring configuration response to the transmitting end to inform the transmitting end of the monitoring configuration result corresponding to the monitoring configuration information.

[0234] In the embodiment of the present application, referring to Figure 4B, steps 409 to 410 may be performed before powering the receiving end to complete the monitoring configuration. After completing the monitoring configuration, the transmitting end powers the receiving end according to the first transmission configuration information.

[0235] 411. The transmitter may send power supply startup information to the receiver.

[0236] 412. The receiving end returns a power supply start response to the transmitting end.

[0237] After receiving the power supply start-up information, the receiving end may return a power supply start-up response to the transmitting end according to actual conditions (for example, when the receiving end is in a normal state).

[0238] 413. The receiving end sends monitoring information to the transmitting end. The monitoring information includes receiving end status parameters.

[0239] During the process of the transmitter supplying power to the receiver, if the receiver determines that a receiver status parameter has changed, it includes the receiver status parameter in the monitoring information. The transmitter updates the path loss and power supply decision based on the receiver status parameter. For example, the transmitter obtains the second transmission configuration information and the second configuration information. The transmitter transmits RF energy to the receiver based on the second transmission configuration information. For details, see the description of step 311.

[0240] 414. The transmitting end sends second configuration information to the receiving end to instruct the receiving end to configure its own MPPT function to be turned on or off according to the second configuration information.

[0241] 415. The receiving end returns a configuration response to the transmitting end to inform the transmitting end of the configuration result of the second configuration information. For details, please refer to the relevant description of step 310.

[0242] 416. During the subsequent power supply process, if the state parameters of the receiving end change, the receiving end sends monitoring information to the transmitting end.

[0243] 417. When the monitoring information includes system error information or power supply stop information, the transmitter needs to stop supplying power to the receiver and disconnect the connection between the transmitter and the receiver.

[0244] Specifically, when the receiver issues a system error, the transmitter must stop supplying power and disconnect the connection to prevent damage to the device. A system error on the receiver side could be due to a signal transmission issue or device malfunction on the transmitter side. Stopping power to the transmitter prevents further damage and avoids further losses. Furthermore, stopping power to the receiver facilitates troubleshooting. After stopping power, further troubleshooting between the transmitter and receiver can be performed to determine the specific cause. This helps quickly locate and resolve the issue, restoring normal system operation. Furthermore, it protects system stability on the receiver side. In some cases, a system error on the receiver side could be caused by signal interference or instability on the transmitter side. Stopping power to the transmitter temporarily eliminates the source of interference, protecting system stability, and facilitating further troubleshooting.

[0245] In another possible embodiment, in addition to obtaining the receiving end status parameters through monitoring information, the transmitting end can configure the update period of the static parameters and regularly read the static parameters of the receiving end to determine whether it is necessary to update the path loss and update the power supply decision. When at least one parameter of the current static parameter is different from the most recently read static parameter, it is necessary to update the path loss or update the power supply decision. For example, when only the receiving power of the receiving end changes, the path loss is updated based on the changed receiving power, and then the power supply decision is updated based on the updated path loss and the previous energy demand, MPPT power overhead and MPPT efficiency.

[0246] Example 2

[0247] The present application also provides a power supply method. In the present application, the execution subject is a terminal device as an example. The terminal device can be a receiving end or a third-party device. Referring to FIG5A , FIG5A is a flow chart of another power supply method provided by the embodiment of the present application. The power supply method includes the following steps:

[0248] 501. Acquire multiple first receiving energy parameters of a receiving end.

[0249] Specifically, the first received energy parameter indicates the amount of radio frequency energy received by the receiving end from the transmitting end. The first received energy parameter is obtained when the maximum power point tracking (MPPT) function of the receiving end is enabled. The first received energy parameter can be total received power or average received power, etc.

[0250] Exemplarily, the receiving end can obtain the first receiving energy parameter when the MPPT function is turned on according to the first frequency and the second duration, that is, obtain the first receiving energy parameter according to the first frequency within the second duration. The specific values ​​of the second duration and the first frequency can be set according to actual conditions without special limitation.

[0251] For example, if the second duration is 1 minute and the first frequency is 10 seconds, a total of six first received energy parameters can be obtained. When the first received energy parameter is total received power, the total received power is the total power received by the receiving end within 10 seconds. When the first received energy parameter is average received power, the average received power is the ratio of the total received power divided by 10 seconds.

[0252] 502. Determine whether multiple first receiving energy parameters meet a first condition, and disable the MPPT function of the receiving end.

[0253] Specifically, the first condition is used to distinguish whether the MPPT function of the receiving end brings positive benefits or negative benefits. The first condition can be set according to actual conditions, as long as it can distinguish whether the MPPT function of the receiving end brings positive benefits or negative benefits when the MPPT function is turned on.

[0254] In one possible implementation, when the executor of the power supply method of the embodiment of the present application is a third-party device, when it is determined that multiple first receiving energy parameters meet the first condition, the third-party device instructs the receiving end to turn off the MPPT function of the receiving end.

[0255] In an embodiment of the present application, whether the first condition is met is determined based on multiple first receiving energy parameters of the receiving end. When the first condition is met, turning on the MPPT function at this time cannot bring positive benefits. The MPPT function of the receiving end can be turned off to reduce additional power consumption overhead and effectively improve the RF energy transmission efficiency between the transmitting end and the receiving end.

[0256] In a possible implementation, the first condition includes: a difference between at least two first receiving energy parameters among the multiple first receiving energy parameters is less than or equal to a first threshold; and an average value of the multiple first receiving energy parameters is less than or equal to a second threshold.

[0257] Specifically, the specific values ​​of the first threshold and the second threshold can be set according to actual conditions and are not particularly limited. The difference between at least two of the multiple first received energy parameters is less than or equal to the first threshold, which can be represented by the difference between each of the multiple first received energy parameters is less than or equal to the first threshold. Alternatively, the difference between at least two of the multiple first received energy parameters is less than or equal to the first threshold, which can be replaced by the variance of the multiple first received energy parameters being less than the first threshold, or by the variance of the absolute values ​​of the multiple first received energy parameters.

[0258] In another possible implementation, the first condition includes: an average value of multiple first receiving energy parameters is less than or equal to a second threshold.

[0259] In a possible implementation, the second threshold is the difference between the second difference and the first MPPT power overhead of the receiving end. The second difference is the difference between the second receiving energy parameter and the third receiving energy parameter. Both the second receiving energy parameter and the third receiving energy parameter are used to indicate the amount of radio frequency energy received by the receiving end from the transmitting end within the first time period. The second receiving energy parameter is obtained when the MPPT function of the receiving end is in the on state. The third receiving energy parameter is obtained when the MPPT function of the receiving end is in the off state. Exemplarily, the first MPPT power overhead P MPPT It can be the factory configuration value of the receiving end.

[0260] Specifically, the specific value of the first duration can be set according to actual circumstances and is not particularly limited. For example, the third received energy parameter is obtained during the initialization phase of the receiving end, and the second received energy parameter is obtained after the third received energy parameter is obtained. The second and third received energy parameters can be total received power or average received power, etc. When the first received energy parameter is total received power, the second and third received energy parameters are also total received power. When the first received energy parameter is average received power, the second and third received energy parameters are also average received power.

[0261] In a possible implementation, referring to FIG5B , FIG5B is a flow chart of another power supply method provided in an embodiment of the present application; the power supply method further includes the following steps:

[0262] 503. Acquire multiple fourth receiving energy parameters of the receiving end.

[0263] Specifically, the fourth received energy parameter is used to indicate the amount of radio frequency energy received by the receiving end from the transmitting end. The fourth received energy parameter is obtained when the MPPT function of the receiving end is disabled. The fourth received energy parameter can be total received power or average received power.

[0264] Exemplarily, the receiving end can obtain the fourth receiving energy parameter when the MPPT function is turned off according to the second frequency and the third duration, that is, obtain the fourth receiving energy parameter according to the second frequency within the third duration. The specific values ​​of the third duration and the second frequency can be set according to actual conditions without special limitation.

[0265] For example, if the third duration is 2 minutes and the second frequency is 15-second acquisition, a total of eight fourth received energy parameters can be obtained. When the fourth received energy parameter is total received power, the total received power is the total power received by the receiving end within 15 seconds. When the fourth received energy parameter is average received power, the average received power is the ratio of the total received power divided by 15 seconds.

[0266] 504. Determine whether the plurality of fourth received energy parameters satisfy a second condition, and enable the MPPT function of the receiving end. Specifically, the second condition is used to distinguish whether the MPPT function of the receiving end generates a positive benefit or a negative benefit. The second condition can be set based on actual conditions, as long as it can distinguish whether the MPPT function of the receiving end generates a positive benefit or a negative benefit when the MPPT function is disabled, and is not particularly limited.

[0267] In one possible implementation, when the executor of the power supply method of the embodiment of the present application is a third-party device, when it is determined that multiple fourth receiving energy parameters meet the second condition, the third-party device instructs the receiving end to turn on the MPPT function of the receiving end.

[0268] In this solution, when multiple fourth receiving energy parameters of the receiving end meet the second condition, turning on the MPPT function at this time can bring positive benefits, and the MPPT function of the receiving end can be turned on. This application can effectively improve the RF energy transmission efficiency between the transmitting end and the receiving end by turning on the MPPT function of the receiving end at the right time.

[0269] In one possible implementation, the second condition includes: a difference between at least two fourth received energy parameters among the plurality of fourth received energy parameters is greater than or equal to a third threshold. The specific value of the third threshold can be set according to actual conditions and is not particularly limited. In this embodiment, during RF energy transmission, when the receiving end turns off the MPPT function, if the fluctuation range of the received energy at the receiving end exceeds the third threshold, it indicates that the MPPT function can bring positive benefits at this time, and the MPPT function of the receiving end can be turned on.

[0270] In order to facilitate the control of the MPPT function, in the embodiment of the present application, the second received energy parameter and the third received energy parameter are obtained during the initialization phase. Referring to Figure 6, Figure 6 is an interactive flow chart of another power supply method provided by the embodiment of the present application; the power supply method includes the following steps:

[0271] 601. When initializing the receiving end, the MPPT function of the receiving end is in a disabled state.

[0272] 602. The transmitting end starts power supply and obtains the energy received by the receiving end when the MPPT function of the receiving end is in the off state, that is, the third receiving energy parameter P Off .

[0273] 603. The receiving end turns on the MPPT function of the receiving end. When the MPPT function of the receiving end is turned on, the collected energy is recorded, that is, the second receiving energy parameter P On .

[0274] When the second receiving energy parameter is obtained after the initialization phase, when the MPPT function of the receiving end is turned on, the latest MPPT value at the current moment can be obtained when the second receiving energy parameter is needed. On .

[0275] 604. During the process of the transmitting end supplying power to the receiving end, when the MPPT function of the receiving end is in an enabled state, obtain a plurality of first receiving energy parameters.

[0276] 605. The receiving end determines whether a first condition is satisfied based on the multiple first reception energy parameters. In some examples, the first condition may include: a difference between at least two of the multiple first reception energy parameters is less than or equal to a first threshold; and an average of the multiple first reception energy parameters is less than or equal to a second threshold.

[0277] 606. Determine that the first condition is met and disable the MPPT function of the receiving end. When the difference between at least two of the multiple first receiving energy parameters is less than or equal to the first threshold, it indicates that the energy received by the receiving end is stable; and the average value of the multiple first receiving energy parameters is less than or equal to P MPPTOn -P MPPTOff -P MPPT When the multiple first receiving energy parameters meet the first condition, turning on the MPPT function at this time cannot bring positive benefits, and the MPPT function of the receiving end can be turned off.

[0278] 607. During the process of the transmitting end supplying power to the receiving end, when the MPPT function of the receiving end is in a disabled state, obtain a plurality of fourth receiving energy parameters.

[0279] 608. The receiving end determines whether a second condition is satisfied based on the plurality of fourth received energy parameters. Specifically, the second condition is used to distinguish whether the MPPT function of the receiving end generates positive or negative benefits. In some examples, the second condition may include: a difference between at least two of the plurality of fourth received energy parameters is greater than or equal to a third threshold.

[0280] 609. Determine whether the second condition is met and enable the MPPT function of the receiving end.

[0281] In one possible implementation, Example 1 and Example 2 can be combined, and the receiving end can determine whether to turn on or off the MPPT function based on the above steps 501 to 502. Based on the method of Example 1, the transmitting end can also send configuration information indicating whether to turn on or off the MPPT function to the receiving end. The receiving end can determine which MPPT configuration strategy to adopt according to actual conditions (the transmitting end or the receiving end determines the MPPT configuration strategy), without special limitation.

[0282] The above describes in detail the method of the embodiment of the present application. The following describes the device provided by the embodiment of the present application.

[0283] Figures 7, 8, 9 and 10 are schematic diagrams of the structures of possible devices provided in the embodiments of the present application. Among them, the transmitting end shown in Figure 7 can be used to implement the function of the transmitting end in the power supply method embodiment shown in Figure 3A above, and thus can also achieve the beneficial effects possessed by the above-mentioned power supply method embodiment. In the embodiment of the present application, the receiving end can be an electronic device, and can also be a module (such as a chip) applied to an electronic device. The receiving end shown in Figure 8 can be used to implement the function of the receiving end in the power supply method embodiment shown in Figure 3A above, and thus can also achieve the beneficial effects possessed by the above-mentioned power supply method embodiment. In the embodiment of the present application, the receiving end can be an electronic device, and can also be a module (such as a chip) applied to an electronic device. The terminal device shown in Figure 9 can be used to implement the function of the power supply method embodiment shown in Figures 5A and 5B above, and thus can also achieve the beneficial effects possessed by the above-mentioned power supply method embodiment. In the embodiment of the present application, the terminal device can be an electronic device (such as a receiving end), and can also be a module (such as a chip) applied to an electronic device.

[0284] As shown in Figure 7, Figure 7 is a schematic diagram of the structure of a transmitter provided in an embodiment of the present application; transmitter 700 includes a transmitting module 710 and a transmitting module 720. Transmitter 700 is used to implement the functions of the transmitter in the power supply method embodiment shown in Figure 3A above. Alternatively, transmitter 700 may include a module for implementing any function or operation of the transmitter in the power supply method embodiment shown in Figure 3A above, and this module may be implemented in whole or in part through software, hardware, firmware, or any combination thereof.

[0285] When the transmitter 700 is used to implement the functions of the transmitter in the method embodiment shown in FIG3A , the sending module 710 is used to send first configuration information to the receiving end, where the first configuration information is used to indicate whether to enable the maximum power point tracking (MPPT) function of the receiving end. The transmitting module 720 is used to transmit radio frequency energy to the receiving end based on the first transmission configuration information, wherein the first configuration information and the first transmission configuration information are determined based on the first path loss between the transmitter and the receiving end, the first energy requirement parameter of the receiving end, the first MPPT power overhead of the receiving end, and the first MPPT efficiency. The first MPPT efficiency is used to indicate the degree to which the MPPT function of the receiving end improves the receiving efficiency of the receiving end.

[0286] In one possible embodiment, the first MPPT efficiency may include at least one of the following: a first receiving efficiency of the receiving end when the MPPT function of the receiving end is in a disabled state, and a second receiving efficiency of the receiving end when the MPPT function of the receiving end is in an enabled state; or a first parameter, the first parameter being obtained based on the first receiving efficiency and the second receiving efficiency. The first receiving efficiency and the second receiving efficiency are both used to indicate the magnitude of the RF energy receiving efficiency of the receiving end.

[0287] In one possible implementation, the first MPPT efficiency includes the first receiving efficiency and the second receiving efficiency, the first transmit power is greater than the second transmit power, and the first configuration information indicates that the MPPT function of the receiving end is disabled. The first transmit power is determined based on the first energy requirement parameter, the first path loss, and the first receiving efficiency. The second transmit power is determined based on the first energy requirement parameter, the first path loss, the first power overhead, and the second receiving efficiency.

[0288] The first transmit power is the minimum transmit power required to meet the first energy requirement parameter when the MPPT function of the receiving end is disabled. The second transmit power is the minimum transmit power required to meet the first energy requirement parameter when the MPPT function of the receiving end is enabled. If the first transmit power is greater than the second transmit power, the MPPT function of the receiving end can be disabled to avoid additional power consumption.

[0289] In one possible implementation, the first MPPT efficiency includes a first parameter, a ratio of the first power cost to the first energy requirement parameter is less than the first ratio, and the first configuration information is used to instruct to disable the MPPT function of the receiving end. The first ratio is a ratio between the first difference and the first receiving efficiency, and the first difference is a difference between the second receiving efficiency and the first receiving efficiency.

[0290] In one possible embodiment, the transmitting module 710 is further configured to transmit monitoring configuration information to the receiving end, where the monitoring configuration information indicates the receiving end state parameters that the receiving end needs to monitor. Referring to FIG7 , the transmitting end 700 further includes a receiving module 730 configured to receive monitoring information transmitted by the receiving end, where the monitoring information includes the receiving end state parameters.

[0291] The receiving end state parameter includes at least one of the following: a second energy requirement parameter of the receiving end, a second MPPT power overhead of the receiving end, a second MPPT efficiency, a first receiving power, or system state information of the receiving end. The second MPPT efficiency indicates the degree to which the MPPT function of the receiving end improves the receiving efficiency of the receiving end, and the first receiving power indicates the amount of RF energy received by the receiving end from the transmitting end.

[0292] In one possible embodiment, the receiving end state parameter includes the first receiving power, and the sending module 710 is further configured to send second configuration information to the receiving end, where the second configuration information is used to indicate whether the MPPT function of the receiving end is enabled. The transmitting module 720 is further configured to transmit radio frequency energy to the receiving end based on the second transmission configuration information. The second configuration information and the second transmission configuration information are determined based on a second path loss between the transmitting end and the receiving end, a first energy requirement parameter, a first MPPT power overhead, and a first MPPT efficiency. The second path loss is obtained based on the first receiving power.

[0293] In one possible embodiment, the receiving end state parameter includes the second energy requirement parameter, the second MPPT power cost, and the second MPPT efficiency. The sending module 710 is further configured to send third configuration information to the receiving end, where the third configuration information indicates whether to enable the MPPT function of the receiving end. The transmitting module 720 is further configured to transmit RF energy to the receiving end based on the third transmission configuration information. The third configuration information and the third transmission configuration information are determined based on the first path loss, the second energy requirement parameter, the second MPPT power cost, and the second MPPT efficiency.

[0294] In a possible implementation of the first aspect, the above-mentioned receiving end state parameters include the above-mentioned first receiving power, the second energy requirement parameter, the second MPPT power overhead and the second MPPT efficiency, and the above-mentioned sending module 710 is also used to send fourth configuration information to the receiving end, and the fourth configuration information is used to indicate whether to turn on the MPPT function of the receiving end. The above-mentioned transmitting module 720 is also used to transmit radio frequency energy to the receiving end based on the fourth transmitting configuration information. The fourth configuration information and the fourth transmitting configuration information are determined based on the second path loss, the second energy requirement parameter, the second MPPT power overhead and the second MPPT efficiency between the transmitting end and the receiving end, and the second path loss is obtained based on the first receiving power. For the introduction of each of the above-mentioned modules, please refer to the records of the aforementioned embodiments and will not be repeated here.

[0295] As shown in Figure 8, Figure 8 is a schematic diagram of the structure of a receiving end provided in an embodiment of the present application; receiving end 800 includes an information receiving module 810 and an energy receiving module 820. Receiver 800 is used to implement the functions of the receiving end in the power supply method embodiment shown in Figure 3A above. Alternatively, receiver 800 may include a module for implementing any function or operation of the receiving end in the power supply method embodiment shown in Figure 3A above, and this module may be implemented in whole or in part through software, hardware, firmware, or any combination thereof.

[0296] When the receiving end 800 is used to implement the function of the receiving end in the method embodiment shown in Figure 3A, the information receiving module 810 is used to receive the first configuration information from the transmitting end. The above-mentioned first configuration information is used to indicate whether the MPPT function of the receiving end is turned on. The energy receiving module 820 is used to receive the radio frequency energy transmitted by the transmitting end based on the first transmission configuration information. The above-mentioned first transmission configuration information and the first configuration information are determined by the transmitting end based on the first path loss between the transmitting end and the receiving end, the first energy requirement parameter of the receiving end, the first MPPT power overhead and the first MPPT efficiency. The above-mentioned first MPPT efficiency is used to indicate the degree to which the MPPT function of the receiving end improves the receiving efficiency of the receiving end.

[0297] In one possible embodiment, the above-mentioned first MPPT efficiency includes at least one of the following: the above-mentioned first MPPT efficiency includes at least one of the following: the first receiving efficiency of the receiving end when the MPPT function of the receiving end is in the off state, and the second receiving efficiency of the receiving end when the MPPT function of the receiving end is in the on state; or, a first parameter, the first parameter is obtained based on the first receiving efficiency and the second receiving efficiency. In one possible embodiment, referring to Figure 8, the above-mentioned information receiving module 810 is also used to receive monitoring configuration information sent by the transmitting end. The above-mentioned monitoring configuration information indicates the receiving end status parameters that the receiving end needs to monitor. The receiving end 800 also includes a sending module 830, which is used to send monitoring information to the transmitting end. The above-mentioned monitoring information includes the receiving end status parameters.

[0298] The receiving end state parameter includes at least one of the following: a second energy requirement parameter of the receiving end, a second MPPT power overhead of the receiving end, a second MPPT efficiency, a first receiving power, or system state information of the receiving end. The second MPPT efficiency indicates the degree to which the MPPT function of the receiving end improves the receiving efficiency of the receiving end, and the first receiving power indicates the amount of RF energy received by the receiving end from the transmitting end.

[0299] In one possible embodiment, the receiving end state parameter includes the first receiving power, and the information receiving module 810 is further configured to receive second configuration information from the transmitting end. The second configuration information is used to indicate whether the MPPT function of the receiving end is enabled. The energy receiving module 820 is further configured to receive, at the receiving end, radio frequency energy transmitted by the transmitting end based on the second transmitting configuration information. The second transmitting configuration information and the second configuration information are determined by the transmitting end based on a second path loss between the transmitting end and the receiving end, a first energy requirement parameter, a first MPPT power overhead, and a first MPPT efficiency, where the second path loss is obtained based on the first receiving power.

[0300] In one possible embodiment, the receiving end state parameter includes the second energy requirement parameter, the second MPPT power overhead, and the second MPPT efficiency. The information receiving module 810 is further configured to receive third configuration information from the transmitting end. The third configuration information is used to indicate whether the MPPT function of the receiving end is enabled. The energy receiving module 820 is further configured to receive RF energy transmitted by the transmitting end based on the third transmission configuration information. The third transmission configuration information and the third configuration information are determined by the transmitting end based on the first path loss, the second energy requirement parameter, the second MPPT power overhead, and the second MPPT efficiency.

[0301] In one possible embodiment, the above-mentioned receiving end state parameters include a first receiving power, a second energy requirement parameter, a second MPPT power overhead, and a second MPPT efficiency, and the above-mentioned information receiving module 810 is further used to receive fourth configuration information from the transmitting end. The above-mentioned fourth configuration information is used to indicate whether to enable the MPPT function of the receiving end. The above-mentioned energy receiving module 820 is also used to receive radio frequency energy transmitted by the transmitting end based on the fourth transmission configuration information. The above-mentioned fourth transmission configuration information and the fourth configuration information are determined by the transmitting end based on the second path loss between the transmitting end and the receiving end, the second energy requirement parameter, the second MPPT power overhead, and the second MPPT efficiency. The above-mentioned second path loss is obtained based on the above-mentioned first receiving power.

[0302] For the introduction of the above modules, please refer to the description of the above embodiments, which will not be repeated here.

[0303] The present application also provides a radio frequency energy transmission system, including a transmitting end shown in FIG7 and a receiving end shown in FIG8 .

[0304] As shown in Figure 9, Figure 9 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application; the terminal device 900 can be a receiving end or a third-party device, etc. The terminal device 900 includes an acquisition module 910 and a processing module 920. The terminal device 900 is used to implement the functions of the power supply method embodiment shown in Figure 5A above. Alternatively, the terminal device 900 may include a module for implementing any function or operation in the power supply method embodiment shown in Figure 5A above, and the module can be implemented in whole or in part by software, hardware, firmware, or any combination thereof.

[0305] When terminal device 900 is used to implement the functions of the method embodiment shown in FIG5A , acquisition module 910 is configured to obtain multiple first received energy parameters of a receiving end. The first received energy parameters are used to indicate the amount of radio frequency energy received by the receiving end from the transmitting end. The first received energy parameters are obtained when the maximum power point tracking (MPPT) function of the receiving end is enabled. Processing module 920 is configured to determine if the multiple first received energy parameters meet a first condition and disable the MPPT function of the receiving end.

[0306] The first condition is used to distinguish whether the MPPT function of the receiving end brings positive benefits or negative benefits.

[0307] In a possible implementation, the first condition includes: a difference between at least two first receiving energy parameters among the multiple first receiving energy parameters is less than or equal to a first threshold; and an average value of the multiple first receiving energy parameters is less than or equal to a second threshold.

[0308] In a possible implementation, the first condition includes: an average value of multiple first receiving energy parameters is less than or equal to a second threshold.

[0309] In one possible implementation, the second threshold is the difference between the second difference and the first MPPT power overhead of the receiving end. The second difference is the difference between the second received energy parameter and the third received energy parameter. Both the second received energy parameter and the third received energy parameter are used to indicate the amount of RF energy received by the receiving end from the transmitting end within the first time period. The second received energy parameter is obtained when the MPPT function of the receiving end is enabled. The third received energy parameter is obtained when the MPPT function of the receiving end is disabled.

[0310] In one possible implementation, the acquisition module 910 is further configured to acquire multiple fourth received energy parameters of the receiving end. The fourth received energy parameters are used to indicate the amount of radio frequency energy received by the receiving end from the transmitting end. The fourth received energy parameters are acquired when the MPPT function of the receiving end is disabled. The processing module 920 is further configured to determine that the multiple fourth received energy parameters meet the second condition and enable the MPPT function of the receiving end.

[0311] In a possible implementation, the second condition includes: a difference between at least two fourth reception energy parameters among the plurality of fourth reception energy parameters is greater than or equal to a third threshold.

[0312] In a possible implementation, the above-mentioned received energy parameter includes total received power or average received power. For the introduction of each of the above-mentioned modules, please refer to the description of the above-mentioned embodiments, which will not be repeated here.

[0313] Referring to Figure 10 , which is a schematic diagram of the structure of a communication device provided in an embodiment of the present application, the communication device 1000 includes a memory 1001, a processor 1002, a communication interface 1004, and a bus 1003. The memory 1001, the processor 1002, and the communication interface 1004 are communicatively connected to each other via the bus 1003.

[0314] Optionally, the communication device 1000 further includes a display screen (not shown), which is connected to the memory 1001, the processor 1002, and the communication interface 1004 via the bus 1003. The display screen is used to output information and interact with the user, such as voice output or display output.

[0315] The memory 1001 may be a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 1001 may store a program. When the program stored in the memory 1001 is executed by the processor 1002, the processor 1002 and the communication interface 1004 are used to perform the various steps of the power supply method of any embodiment of the present application.

[0316] The processor 1002 can adopt a general central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), a graphics processing unit (GPU) or one or more integrated circuits to execute relevant programs to implement the functions required to be performed by the transmitting end or receiving end or the unit in the terminal device of any embodiment of the present application, or to execute the power supply method of any embodiment of the present application.

[0317] The processor 1002 may also be an integrated circuit chip with signal processing capabilities. During implementation, the various steps of the power supply method of any embodiment of the present application may be completed by hardware integrated logic circuits or software instructions in the processor 1002. The above-mentioned processor 1002 may also be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. The power supply method, steps, and logic block diagram disclosed in the embodiments of the present application may be implemented or executed. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc. The steps of the power supply method in conjunction with any embodiment of the present application may be directly embodied as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor. The software module may be located in a storage medium mature in the art, 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, or the like. The storage medium is located in the memory 1001, and the processor 1002 reads the information in the memory 1001 and combines its hardware to complete the functions required to be performed by the units included in the transmitting end or receiving end or terminal device of any embodiment of the present application, or executes the power supply method of any embodiment of the present application.

[0318] The communication interface 1004 uses a transceiver such as, but not limited to, a transceiver to implement communication between the communication device 1000 and other devices or a communication network. For example, the first received power or the first MPPT power overhead can be obtained through the communication interface 1004.

[0319] The bus 1003 may include a path for transmitting information between the various components of the communication device 1000 (for example, the memory 1001, the processor 1002, the communication interface 1004). In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method can be implemented in other ways. For example, the apparatus embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0320] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0321] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0322] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website, computer, server or data center to another website, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium can be a read-only memory (ROM), a random access memory (RAM), or a magnetic medium, such as a floppy disk, a hard disk, a tape, a magnetic disk, or an optical medium, such as a digital versatile disc (DVD), or a semiconductor medium, such as a solid state drive (SSD).

[0323] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A power supply method, characterized in that, Applied to the transmitting end, the method includes: Sending first configuration information to the receiving end; the first configuration information is used to indicate whether to enable the maximum power point tracking (MPPT) function of the receiving end; Transmitting radio frequency energy to the receiving end based on first transmission configuration information, where the first configuration information and the first transmission configuration information are determined based on the first path loss between the transmitting end and the receiving end, the first energy demand parameter of the receiving end, the first MPPT power overhead of the receiving end, and the first MPPT efficiency; the first MPPT efficiency is used to indicate the degree of improvement of the receiving efficiency of the receiving end by the MPPT function of the receiving end.

2. The method according to claim 1, characterized in that, The first MPPT efficiency includes at least one of the following: When the MPPT function of the receiving end is in the off state, the first receiving efficiency of the receiving end, and when the MPPT function of the receiving end is in the on state, the second receiving efficiency of the receiving end; Or, A first parameter, where the first parameter is obtained based on the first receiving efficiency and the second receiving efficiency.

3. The method according to claim 2, wherein The first MPPT efficiency includes the first receiving efficiency and the second receiving efficiency, the first transmission power is greater than the second transmission power, the first configuration information is used to indicate turning off the MPPT function of the receiving end, and the first transmission power is determined based on the first energy demand parameter, the first path loss, and the first receiving efficiency; The second transmission power is determined based on the first energy demand parameter, the first path loss, the first power overhead, and the second receiving efficiency.

4. The method according to claim 2, wherein The first MPPT efficiency includes the first parameter, the ratio of the first power overhead to the first energy demand parameter is less than the first ratio, and the first configuration information is used to indicate turning off the MPPT function of the receiving end; the first ratio is the ratio of the first difference to the first receiving efficiency, and the first difference is the difference between the second receiving efficiency and the first receiving efficiency.

5. The method according to any one of claims 1 to 4, characterized in that The method further includes: Sending monitoring configuration information to the receiving end, where the monitoring configuration information is used to indicate the receiving end state parameters that need to be monitored by the receiving end; Receiving the monitoring information sent by the receiving end, where the monitoring information includes the receiving end state parameters; the receiving end state parameters include at least one of the following: the second energy demand parameter of the receiving end, the second MPPT power overhead of the receiving end, the second MPPT efficiency, the first receiving power, or the system state information of the receiving end; Wherein, the second MPPT efficiency is used to indicate the degree of improvement of the receiving efficiency of the receiving end by the MPPT function of the receiving end, and the first receiving power is used to indicate the magnitude of the radio frequency energy received by the receiving end from the transmitting end.

6. The method according to claim 5, characterized in that, When the receiving end state parameter includes the first receiving power, the method further includes: Sending second configuration information to the receiving end, where the second configuration information is used to indicate whether to enable the MPPT function of the receiving end; Transmit radio frequency energy to the receiving end based on the second transmission configuration information, where the second configuration information and the second transmission configuration information are determined based on the second path loss between the transmitting end and the receiving end, the first energy demand parameter, the first MPPT power overhead, and the first MPPT efficiency; the second path loss is obtained based on the first received power.

7. The method according to claim 5, wherein The receiving end state parameters include the second energy demand parameter, the second MPPT power overhead, and the second MPPT efficiency. The method further includes: Send third configuration information to the receiving end, where the third configuration information is used to indicate whether to enable the MPPT function of the receiving end; Transmit radio frequency energy to the receiving end based on the third transmission configuration information, where the third configuration information and the third transmission configuration information are determined based on the first path loss, the second energy demand parameter, the second MPPT power overhead, and the second MPPT efficiency.

8. The method according to claim 5, wherein The receiving end state parameters include the first received power, the second energy demand parameter, the second MPPT power overhead, and the second MPPT efficiency. The method further includes: Send fourth configuration information to the receiving end, where the fourth configuration information is used to indicate whether to enable the MPPT function of the receiving end; Transmit radio frequency energy to the receiving end based on the fourth transmission configuration information, where the fourth configuration information and the fourth transmission configuration information are determined based on the second path loss between the transmitting end and the receiving end, the second energy demand parameter, the second MPPT power overhead, and the second MPPT efficiency, and the second path loss is obtained based on the first received power.

9. A power supply method, characterized in that, The method is applied to the receiving end. The method includes: Receive first configuration information from the transmitting end, where the first configuration information is used to indicate whether to enable the maximum power point tracking (MPPT) function of the receiving end; Receive the radio frequency energy transmitted by the transmitting end based on the first transmission configuration information, where the first transmission configuration information and the first configuration information are determined by the transmitting end based on the first path loss between the transmitting end and the receiving end, the first energy demand parameter of the receiving end, the first MPPT power overhead, and the first MPPT efficiency; the first MPPT efficiency is used to indicate the improvement degree of the receiving efficiency of the receiving end by the MPPT function of the receiving end.

10. The method according to claim 9, wherein The first MPPT efficiency includes at least one of the following: When the MPPT function of the receiving end is in the off state, the first receiving efficiency of the receiving end, and when the MPPT function of the receiving end is in the on state, the second receiving efficiency of the receiving end; Or, The first parameter, where the first parameter is obtained based on the first receiving efficiency and the second receiving efficiency.

11. The method according to claim 9 or 10, characterized in that, The method further includes: Receive the monitoring configuration information sent by the transmitting end, where the monitoring configuration information is used to indicate the receiving end state parameters that need to be monitored by the receiving end; Send monitoring information to the transmitting end, where the monitoring information includes the receiving end status parameters; the receiving end status parameters include at least one of the following: the second energy demand parameter of the receiving end, the second MPPT power overhead of the receiving end, the second MPPT efficiency, the first received power, or the system status information of the receiving end; Wherein, the second MPPT efficiency is used to indicate the improvement degree of the receiving efficiency of the receiving end by the MPPT function of the receiving end, and the first received power is used to indicate the magnitude of the radio frequency energy received by the receiving end from the transmitting end.

12. The method according to claim 11, characterized in that, The receiving end status parameters include the first received power, and the method further includes: Receiving second configuration information from the transmitting end, where the second configuration information is used to indicate whether to enable the MPPT function of the receiving end; Receiving radio frequency energy transmitted by the transmitting end based on second transmission configuration information, where the second transmission configuration information and the second configuration information are determined by the transmitting end based on the second path loss between the transmitting end and the receiving end, the first energy demand parameter, the first MPPT power overhead, and the first MPPT efficiency, and the second path loss is obtained based on the first received power.

13. The method according to claim 11, wherein The receiving end status parameters include the second energy demand parameter, the second MPPT power overhead, and the second MPPT efficiency, and the method further includes: Receiving third configuration information from the transmitting end, where the third configuration information is used to indicate whether to enable the MPPT function of the receiving end; Receiving radio frequency energy transmitted by the transmitting end based on third transmission configuration information, where the third transmission configuration information and the third configuration information are determined by the transmitting end based on the first path loss, the second energy demand parameter, the second MPPT power overhead, and the second MPPT efficiency.

14. The method according to claim 11, wherein The receiving end status parameters include the first received power, the second energy demand parameter, the second MPPT power overhead, and the second MPPT efficiency, and the method further includes: Receiving fourth configuration information from the transmitting end, where the fourth configuration information is used to indicate whether to enable the MPPT function of the receiving end; Receiving radio frequency energy transmitted by the transmitting end based on fourth transmission configuration information, where the fourth transmission configuration information and the fourth configuration information are determined by the transmitting end based on the second path loss between the transmitting end and the receiving end, the second energy demand parameter, the second MPPT power overhead, and the second MPPT efficiency; the second path loss is obtained based on the first received power.

15. A power supply method, characterized in that, The method is applied to a radio frequency energy transmission system, which includes a transmitting end and a receiving end, and the method includes: The transmitting end sends the first configuration information to the receiving end; the first configuration information is used to indicate whether to enable the maximum power point tracking (MPPT) function of the receiving end; The receiving end receives the first configuration information; The transmitting end transmits radio frequency energy to the receiving end based on the first transmission configuration information; the first configuration information and the first transmission configuration information are determined based on the first path loss between the transmitting end and the receiving end, the first energy demand parameter of the receiving end, the first MPPT power overhead of the receiving end, and the first MPPT efficiency; the first MPPT efficiency is used to indicate the improvement degree of the receiving efficiency of the receiving end by the MPPT function of the receiving end; The receiving end receives the radio frequency energy.

16. A power supply method, characterized in that, The method includes: Obtaining a plurality of first received energy parameters of the receiving end, where the first received energy parameters are used to indicate the magnitude of the radio frequency energy received by the receiving end from the transmitting end, and the first received energy parameters are obtained when the maximum power point tracking (MPPT) function of the receiving end is in an on state; Determining that the plurality of first received energy parameters meet a first condition, and turning off the MPPT function of the receiving end.

17. The method according to claim 16, characterized in that, The first condition includes: The difference between at least two of the plurality of first received energy parameters is less than or equal to a first threshold; and The average value of the plurality of first received energy parameters is less than or equal to a second threshold.

18. The method according to claim 17, wherein The second threshold is the difference between a second difference and the first MPPT power overhead of the receiving end, and the second difference is the difference between a second received energy parameter and a third received energy parameter; Both the second received energy parameter and the third received energy parameter are used to indicate the magnitude of the radio frequency energy received by the receiving end from the transmitting end within a first time period; The second received energy parameter is obtained when the MPPT function of the receiving end is in an on state, and the third received energy parameter is obtained when the MPPT function of the receiving end is in an off state.

19. The method according to any one of claims 16 to 18, characterized in that, The method further includes: Obtaining a plurality of fourth received energy parameters of the receiving end, where the fourth received energy parameters are used to indicate the magnitude of the radio frequency energy received by the receiving end from the transmitting end, and the fourth received energy parameters are obtained when the MPPT function of the receiving end is in an off state; Determining that the plurality of fourth received energy parameters meet a second condition, and turning on the MPPT function of the receiving end.

20. The method according to claim 19, wherein The second condition includes: The difference between at least two of the plurality of fourth received energy parameters is greater than or equal to a third threshold.

21. The method according to any one of claims 16 to 20, characterized in that, The received energy parameter includes total received power or average received power.

22. A transmitting end, characterized in that, The transmitting end includes: A sending module, configured to send first configuration information to the receiving end; the first configuration information is used to indicate whether to turn on the maximum power point tracking (MPPT) function of the receiving end; A transmitting module, configured to transmit radio frequency energy to the receiving end based on the first transmission configuration information, where the first configuration information and the first transmission configuration information are determined based on the first path loss between the transmitting end and the receiving end, the first energy demand parameter of the receiving end, the first MPPT power overhead of the receiving end, and the first MPPT efficiency; the first MPPT efficiency is used to indicate the improvement degree of the receiving efficiency of the receiving end by the MPPT function of the receiving end.

23. A receiving end, characterized in that, The receiving end includes: An information receiving module, configured to receive first configuration information from the transmitting end, where the first configuration information is used to indicate whether to enable the maximum power point tracking (MPPT) function of the receiving end. An energy receiving module, configured to receive radio frequency energy transmitted by the transmitting end based on first transmission configuration information, where the first transmission configuration information and the first configuration information are determined by the transmitting end based on a first path loss between the transmitting end and the receiving end, a first energy demand parameter of the receiving end, a first MPPT power overhead, and a first MPPT efficiency; the first MPPT efficiency is used to indicate the improvement degree of the receiving efficiency of the receiving end by the MPPT function of the receiving end.

24. A radio frequency energy transmission system, characterized in that, It includes a transmitting end and a receiving end, where the transmitting end is configured to execute the power supply method according to any one of claims 1 to 8, and the receiving end is configured to execute the power supply method according to any one of claims 9 to 14.

25. A receiving end, characterized in that, The receiving end includes: An acquisition module, configured to acquire a plurality of first received energy parameters of the receiving end, where the first received energy parameters are used to indicate the magnitude of the radio frequency energy received by the receiving end from the transmitting end, and the first received energy parameters are acquired when the maximum power point tracking (MPPT) function of the receiving end is in an enabled state. A processing module, configured to determine that the plurality of first received energy parameters meet a first condition, and turn off the MPPT function of the receiving end.

26. A radio frequency energy transmission system, characterized in that, It includes a transmitting end and a receiving end, where the receiving end is configured to execute the power supply method according to any one of claims 16 to 21.

27. A communication device, characterized in that, It includes a processor and a memory. Among them, the processor is connected to the memory. The memory is configured to store program code, and the processor is configured to call the program code to execute the power supply method according to any one of claims 1 to 21.

28. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement the power supply method according to any one of claims 1 to 21.

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