Wireless energy transfer method and apparatus

Abstract

A wireless energy transfer method and apparatus, which are applied to the technical field of communications. The present application can be applied to the field of AMP, such as supporting WPT, WLAN or IEEE series protocols, e.g. IEEE 802.11 protocols related to AMP, or other protocols applicable to IEEE 802.11 series, e.g. 802.11a / b / g protocols, 802.11n protocols, 802.11ac protocols, 802.11ax protocols, 802.11be protocols, and 802.11bn protocols. The method comprises: a first AMP apparatus sends first capability indication information by means of a WLAN link, and then initiates a WPT establishment process on the basis of the first capability indication information; and a third AMP apparatus receives the first capability indication information and responds to the WPT establishment process. Therefore, the interaction process of the AMP apparatuses is perfected, and communication efficiency is improved.

Description

Wireless energy transmission method and device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on January 26, 2024, with application number 202410112416.6, and priority to the Chinese patent application entitled “Wireless Energy Transmission Method and Device”, all contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a method and device for wireless energy transmission. Background Art

[0003] Currently, wireless local area network (WLAN) applications based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 technology have been deployed in many market segments, including the traditional consumer electronics market and the booming Internet of Things (IoT) market. However, traditional IoT devices are usually powered by batteries with limited lifespans, which brings the following problems to IoT devices: (1) they cannot operate in harsh communication environments (such as high temperature, extremely low temperature, high humidity, high voltage, high radiation, or high-speed movement environments); (2) they cannot achieve extremely small terminal size; (3) they cannot achieve extremely low terminal cost; (4) they have labor maintenance costs such as battery replacement; (5) they have low recycling rates, which damage the earth's ecosystem; and (6) they have safety risks.

[0004] To further reduce the deployment and maintenance costs of Wi-Fi IoT, the IEEE 802.11 working group is discussing a new project called Ambient Power (AMP) to support IoT devices with energy harvesting capabilities. By introducing radio frequency wireless power transfer (RF WPT), devices supporting RF WPT can replace traditional batteries, addressing the bottlenecks caused by traditional batteries.

[0005] Therefore, the interaction mode between devices is a problem being studied by those skilled in the art. Summary of the Invention

[0006] The embodiments of the present application provide a wireless power transfer (WPT) method and apparatus, which improve the interaction process between various AMP devices, so that the first AMP device can realize RF energy collection.

[0007] In a first aspect, an embodiment of the present application provides a wireless energy transmission method, which is applied to a first environment energy AMP device. The AMP device may include the AMP device itself, or a chip or functional module that can be set in the AMP device. For example, the AMP device may include an AMP station (STA). The method includes:

[0008] A first capability indication information is sent via a wireless local area network (WLAN) link, where the first capability indication information is used to indicate the capability information of the first AMP device to receive wireless energy transmission WPT signals; and a WPT establishment process is initiated based on the first capability indication information.

[0009] In the embodiment of the present application, the first AMP device transmits first capability indication information, enabling the third AMP device to, in conjunction with the first capability indication information, determine whether to accept or reject the WPT establishment process. This improves the interaction process between AMP devices, enabling the third AMP device to reasonably determine the success or failure of the WPT establishment process based on the first capability indication information. Due to the third AMP device's greater processing power, the accuracy of determining whether the WPT establishment process is successfully established can be further improved. Furthermore, as the first AMP device is the end requesting RF energy, initiating the WPT establishment process through the first AMP device can also improve the efficiency of the second AMP device providing RF energy to the first AMP device, allowing the second AMP device to charge the first AMP device in a timely manner.

[0010] In a possible implementation, the method further includes: receiving second capability indication information through the WLAN link, where the second capability indication information is used to indicate capability information of the second AMP device to send the WPT signal.

[0011] In an embodiment of the present application, the first AMP device can simply determine whether a WPT establishment process can be initiated by combining the first capability indication information and the second capability indication information, thereby improving the efficiency of the successful establishment of the WPT establishment process. For example, the third AMP device can further determine whether the WPT establishment process initiated by the first AMP device can be successful by combining the first capability indication information and the second capability indication information, thereby further improving the accuracy of the determination of whether the WPT establishment process can be successfully established and improving the efficiency of the WPT establishment process.

[0012] In a possible implementation, the initiating the WPT establishment process based on the first capability indication information includes: initiating the WPT establishment process when the first capability indication information matches the second capability indication information.

[0013] In the embodiment of the present application, when the first capability indication information and the second capability indication information match, the first AMP device initiates the WPT establishment process, thereby improving the efficiency of the third AMP device confirming the WPT establishment process.

[0014] In one possible implementation, the first capability indication information includes at least one of the following: a frequency band supported by the first AMP device, a bandwidth supported by the first AMP device, a WPT waveform supported by the first AMP device, a receiving power sensitivity of the first AMP device, a type of the first AMP device, an antenna type of the first AMP device, or an antenna polarization mode of the first AMP device.

[0015] In a possible implementation, the first capability indication information includes at least one of the following: a frequency band supported by the first AMP device, a bandwidth supported by the first AMP device, or a WPT waveform supported by the first AMP device.

[0016] In this embodiment of the present application, if the frequency band supported by the first AMP device differs from the frequency band supported by the second AMP device, the first AMP device will not be able to receive the WPT signal even if the second AMP device sends it. Therefore, by indicating the frequency band supported by the first AMP device, the third AMP device can accurately determine whether the first AMP device can successfully receive the WPT signal, thereby improving communication efficiency. If the channel bandwidth supported by the first AMP device does not match the channel bandwidth supported by the second AMP device, the power of the WPT signal received by the first AMP device will be unstable. Therefore, by interchanging the channel bandwidth supported by the first AMP device, the power stability of the WPT signal can be ensured. If the WPT waveform supported by the first AMP device does not match the WPT waveform supported by the second AMP device, the first AMP device will not be able to convert the received WPT signal into a DC signal through the rectifier, and the WPT signal will not be able to provide RF energy to the first AMP device. Therefore, by indicating the above capabilities, the first AMP device can enable the third AMP device to accurately and effectively determine whether to accept the WPT establishment process.

[0017] In a possible implementation, the first capability indication information further includes at least one of the following: the receiving power sensitivity of the first AMP device or the type of the first AMP device.

[0018] In an embodiment of the present application, when the receiving power sensitivity of the first AMP device does not match the transmitting power of the second AMP device, for example, the second AMP device transmits the WPT signal at a certain transmitting power, and then the receiving power of the WPT signal when it reaches the first AMP device after signal attenuation is less than the receiving power sensitivity of the first AMP device, the first AMP device will be unable to detect the WPT signal, and thus will be unable to provide RF energy to the first AMP device.

[0019] In a possible implementation, the first capability indication information further includes at least one of the following: an antenna type of the first AMP device or an antenna polarization mode of the first AMP device.

[0020] In this embodiment of the present application, different antenna types require different powers to transmit the same signal. Therefore, the first AMP device can transmit its antenna type, using this antenna type as a reference for capability information. If the antenna type of the first AMP device and the antenna type of the second AMP device do not match, for example, if the antenna type of the first AMP device is circularly polarized and the antenna type of the second AMP device is linearly polarized, WPT signal transmission efficiency will be low. Therefore, using interactive antenna polarization can improve WPT signal transmission efficiency.

[0021] In one possible implementation, the second capability indication information includes at least one of the following: the frequency band supported by the second AMP device, the bandwidth supported by the second AMP device, the WPT waveform supported by the second AMP device, whether the effective isotropic radiated power EIRP of the second AMP device is adjustable, the EIRP of the second AMP device, the antenna type of the second AMP device, the antenna polarization mode of the second AMP device, the antenna horizontal angle of the second AMP device, the antenna downtilt angle of the second AMP device, whether the beam pattern of the second AMP device is adjustable, the beam pattern width of the second AMP device, or the beam pattern height of the second AMP device.

[0022] In a possible implementation, the second capability indication information includes at least one of the following: a frequency band supported by the second AMP device, a bandwidth supported by the second AMP device, or a WPT waveform supported by the second AMP device.

[0023] In a possible implementation manner, the second capability indication information further includes at least one of the following: whether the effective isotropic radiated power (EIRP) of the second AMP device is adjustable or the EIRP of the second AMP device.

[0024] In a possible implementation, the second capability indication information further includes at least one of the following: an antenna type of the second AMP device or an antenna polarization mode of the second AMP device.

[0025] In one possible implementation, the second capability indication information also includes at least one of the following: the antenna horizontal angle of the second AMP device, the antenna downtilt angle of the second AMP device, whether the beam pattern of the second AMP device is adjustable, the beam pattern width of the second AMP device, or the beam pattern height of the second AMP device.

[0026] In this embodiment of the present application, the second AMP device indicates the antenna orientation, antenna downtilt angle, antenna beam width, or antenna beam height to the first AMP device, allowing the first AMP device to determine the antenna's radiation range based on this information. This allows the first AMP device to determine whether it is within the second AMP device's radiation range. If it is not within the radiation range, transmission efficiency will be very low, and the first AMP device may not initiate a WPT establishment request.

[0027] In one possible implementation, initiating a WPT establishment process includes: sending a WPT establishment request through the WLAN link, where the WPT establishment request is used to request initiation of a WPT establishment process, or the WPT establishment request is used to request establishment of a WPT link; and receiving a WPT establishment response to the WPT establishment request through the WLAN link.

[0028] Exemplarily, the WPT establishment response may be used to indicate whether the WPT link establishment is successful.

[0029] In an embodiment of the present application, the first AMP device requests to establish a WPT link with the second AMP device by sending a WPT establishment request; the third AMP device determines whether the second AMP device can establish a WPT link with the first AMP device based on the WPT establishment request; the third AMP device informs the first AMP device whether the WPT link establishment is successful by sending a WPT establishment response. If the WPT link establishment fails, it means that the second AMP device cannot provide wireless energy to the first AMP device; if the WPT link establishment is successful, it means that the second AMP device can provide wireless energy to the first AMP device (such as sending a WPT signal). This embodiment of the present application improves the interactive process of establishing WPT links between different AMP devices and improves the reliability of wireless energy transmission.

[0030] In a possible implementation, the method further includes: sending a WPT report, where the WPT report is used to report WPT status information of the first AMP device.

[0031] In a possible implementation, the method further includes: before sending the WPT report, receiving a WPT report request, where the WPT report request requires the first AMP device to report WPT status information.

[0032] In an embodiment of the present application, the first AMP device enters the WPT process and can send a WPT report to the third AMP device to report the WPT status; the third AMP device can determine whether the WPT process needs to be adjusted based on the WPT status information, thereby further improving the reliability of wireless energy transmission.

[0033] In this embodiment of the present application, during the WPT process, the third AMP device can send a WPT report request to the first AMP device, requesting WPT status information. After receiving the WPT report request, the first AMP device sends a WPT report to the third AMP device, reporting the WPT status information. Combined with the above possible implementations, the first AMP device can actively or passively report WPT status information, improving the interaction process between different AMP devices during the WPT process and further enhancing the reliability of wireless energy transmission.

[0034] In one possible implementation, the method further includes: when a WPT alarm occurs in the first AMP device or a WPT signal is no longer needed, sending the WPT report, wherein the WPT report is used to indicate that a WPT alarm occurs in the first AMP device or a WPT signal is no longer needed.

[0035] In this embodiment of the present application, when a first AMP device detects a WPT alarm or no longer requires a WPT signal—for example, if the first AMP device detects that its wireless energy module is about to be damaged or is fully charged—the first AMP device can proactively send a WPT report to a third AMP device, indicating in the WPT report that a WPT alarm has occurred or that a WPT signal is no longer required. The third AMP device then stops the WPT process based on the WPT report. This is both a proactive WPT reporting method and an implicit WPT stopping process.

[0036] In one possible implementation, the method further includes: receiving a WPT teardown, where the WPT teardown is used to inform the first AMP device to stop the WPT process; and sending an ACK, where the ACK is used to indicate that the first AMP device has successfully received the instruction to stop the WPT process.

[0037] In this embodiment, the third AMP device sends a WPT removal message to the first AMP device, informing it of the need to terminate the WPT process. The first AMP device then responds with an ACK message, indicating successful receipt of the WPT termination instruction. This explicit WPT termination process, along with the implicit WPT termination process described above, completes the WPT removal phase, further enhancing the reliability of wireless energy transmission by ensuring the interaction between different AMP devices.

[0038] In one possible implementation, the WPT establishment request includes at least one of the following fields: a category field, a WPT action field, a WPT establishment parameter field, and a WPT status control field; the category field is used to indicate that the category of the WPT establishment request is WPT category information; the WPT action field is used to indicate that the action type corresponding to the WPT action field is the WPT establishment request; the WPT establishment parameter field is used to indicate the parameters used for WPT link establishment; and the WPT status control field is used to indicate the WPT status information to be reported in the WPT report.

[0039] In one possible implementation, the WPT establishment parameter field includes at least one of the following fields: a WPT frequency range field, a WPT modulation field, and a WPT duration field; the WPT frequency range field is used to indicate the frequency range used by the WPT process; the WPT modulation field is used to indicate the modulation method used by the WPT process; and the WPT duration field is used to indicate the length of time the WPT process lasts.

[0040] In one possible implementation, the WPT status control field includes at least one of the following fields: whether to report the DC voltage output by the rectifier of the first AMP device; whether to report the voltage of the energy storage of the first AMP device; whether to report the amount of electricity received by the first AMP device; and whether to report the temperature of the first AMP device.

[0041] In an embodiment of the present application, the first AMP device sends a WPT establishment request to the third AMP device, notifying it of parameters related to WPT link establishment, such as the frequency range, modulation method, and duration used in the WPT process. It also informs the first AMP device of WPT status information to be reported during the reporting phase, such as whether to report the rectifier output voltage, the energy storage voltage, the received power, or the temperature. The third AMP device can determine whether the WPT link can be successfully established based on the aforementioned WPT establishment parameter fields, and can determine the WPT status information that the first AMP device needs to report during the reporting phase based on the WPT status control field. This improves the interactive process between the first and second AMP devices during the establishment phase to determine whether the WPT link can be successfully established, thereby increasing the accuracy of determining whether the WPT link establishment is successful.

[0042] In one possible implementation, the WPT report includes at least one of the following fields: a category field, a WPT action field, a WPT energy control field, a WPT state control field, and WPT state information; the category field is used to indicate that the category of the WPT report is WPT category information; the WPT action field is used to indicate that the action type corresponding to the WPT action field is the WPT report; the WPT energy control field is used to indicate the WPT energy control information reported by the first AMP device; the WPT state control field is used to indicate the WPT state information to be reported in the WPT report; and the WPT state information is used to indicate the WPT state information reported by the first AMP device.

[0043] In one possible implementation, the WPT energy control information includes at least one of the following information: the urgency of the energy control information reported by the first AMP device; the power status received by the first AMP device; whether the voltage of the first AMP device is too large; whether the current of the first AMP device is too large; whether the temperature of the first AMP device is too high; and whether the first AMP device has a self-protection mechanism.

[0044] In one possible implementation, the WPT status control field includes at least one of the following fields: whether to report the DC voltage output by the rectifier of the first AMP device; whether to report the voltage of the energy storage of the first AMP device; whether to report the amount of electricity received by the first AMP device; and whether to report the temperature of the first AMP device.

[0045] In one possible implementation, the WPT status information includes at least one of the following information: a DC voltage output by a rectifier of the first AMP device; a voltage of an energy storage device of the first AMP device; an amount of electricity received by the first AMP device; and a temperature of the first AMP device.

[0046] In the embodiments of the present application, the first AMP device sends a WPT report to the third AMP device, allowing the third AMP device to obtain WPT energy control information, such as whether the capacity control information reported by the WPT is urgent; whether the power received by the first AMP device has reached the minimum or maximum received power; whether the voltage, current, or temperature of the first AMP device is too high; and whether there is a self-protection mechanism. The third AMP device can adjust the WPT transmission power based on the WPT energy control information. The third AMP device can also obtain WPT status information, such as the DC voltage output by the rectifier of the first AMP device, the voltage of the energy storage device, the amount of power received, and the temperature. Based on the WPT status information, the third AMP device can determine whether to continue the WPT process. This improves the interactive process for the third AMP device to control the information required for the WPT process during the WPT process, further enhancing the reliability of wireless energy transmission.

[0047] In one possible implementation, the power status received by the first AMP device includes at least one of the following status information: the received power does not reach the minimum receiving power threshold; the received power is between the minimum and maximum receiving power thresholds; the received power reaches the maximum receiving power threshold; the received power exceeds a first threshold of the maximum power; the received power exceeds a second threshold of the maximum power; a WPT alarm occurs in the first AMP device; the first AMP device no longer requires WPT.

[0048] In one possible implementation, the power status received by the first AMP device further includes at least one of the following status information: the received power does not reach a minimum received power threshold, the received power is between the minimum and maximum received power thresholds, the received power reaches a maximum received power threshold, the received power exceeds a first maximum power threshold, the received power exceeds a second maximum power threshold, a WPT alarm is generated by the first AMP device, and the first AMP device no longer requires a WPT signal. This further improves the accuracy of determining WPT status information.

[0049] In the embodiment of the present application, the third AMP device can increase or decrease the WPT transmission power, or stop the WPT process according to the reported power status.

[0050] In a second aspect, an embodiment of the present application provides a wireless energy transmission method, which is applied to a third environment energy AMP device, and the method includes:

[0051] Receive first capability indication information through a WLAN link, where the first capability indication information is used to indicate capability information of a first AMP device to receive wireless energy transmission (WPT) signals; and respond to a WPT establishment process based on the first capability indication information.

[0052] In a possible implementation, the method further includes: sending second capability indication information through the WLAN link, where the second capability indication information is used to indicate capability information of the second AMP device to send the WPT signal;

[0053] In a possible implementation, responding to the WPT establishment procedure based on the first capability indication information includes: responding to the WPT establishment procedure when the first capability indication information matches the second capability indication information.

[0054] In a possible implementation, the first capability indication information includes at least one of the following: a frequency band supported by the first AMP device, a bandwidth supported by the first AMP device, or a WPT waveform supported by the first AMP device.

[0055] In a possible implementation, the first capability indication information further includes at least one of the following: the receiving power sensitivity of the first AMP device or the type of the first AMP device.

[0056] In a possible implementation, the first capability indication information further includes at least one of the following: an antenna type of the first AMP device or an antenna polarization mode of the first AMP device.

[0057] In a possible implementation, the second capability indication information includes at least one of the following: a frequency band supported by the second AMP device, a bandwidth supported by the second AMP device, or a WPT waveform supported by the second AMP device.

[0058] In a possible implementation manner, the second capability indication information further includes at least one of the following: whether the effective isotropic radiated power (EIRP) of the second AMP device is adjustable or the EIRP of the second AMP device.

[0059] In a possible implementation, the second capability indication information further includes at least one of the following: an antenna type of the second AMP device or an antenna polarization mode of the second AMP device.

[0060] In one possible implementation, the second capability indication information also includes at least one of the following: the antenna horizontal angle of the second AMP device, the antenna downtilt angle of the second AMP device, whether the beam pattern of the second AMP device is adjustable, the beam pattern width of the second AMP device, or the beam pattern height of the second AMP device.

[0061] In one possible implementation, the response WPT establishment process includes: receiving a WPT establishment request through the WLAN link, the WPT establishment request is used to request to initiate a WPT establishment process, or the WPT establishment request is used to request to establish a WPT link; sending a WPT establishment response to the WPT establishment request through the WLAN link, and the WPT establishment response can be used to indicate whether the WPT link establishment is successful.

[0062] In a possible implementation, the method further includes: receiving a WPT report, where the WPT report reports WPT status information.

[0063] In a possible implementation, the method further includes: before receiving the WPT report, sending a WPT report request, where the WPT report request requires reporting WPT status information.

[0064] In one possible implementation, the method further includes: sending WPT demolition, where the WPT demolition is used to indicate that the third AMP device is to stop the WPT process; receiving ACK, where the ACK is used to indicate that the first AMP device has successfully received the instruction to stop the WPT process, and the second AMP device stops the WPT process.

[0065] In one possible implementation, the WPT establishment response also includes at least one of the following fields: a category field, a WPT action field, a status code field, a WPT establishment parameter field, and a WPT status control field; the category field is used to indicate that the category of the WPT establishment response is WPT category information; the WPT action field is used to indicate that the action type corresponding to the WPT action field is a WPT establishment response; the status code field is used to indicate whether the WPT link establishment is successful; the WPT establishment parameter field is used to indicate the parameters used for WPT link establishment; and the WPT status control field is used to indicate the WPT status information that needs to be reported in the WPT report.

[0066] In one possible implementation, the WPT establishment parameter field includes at least one of the following fields: a WPT frequency range field, a WPT modulation field, a WPT start time field, and a WPT duration field; the WPT frequency range field is used to indicate the frequency range used by the WPT process; the WPT modulation field is used to indicate the modulation method used by the WPT process; the WPT start time field is used to indicate the start time of the WPT process; and the WPT duration field is used to indicate the length of time the WPT process lasts.

[0067] In one possible implementation, the WPT status control field includes at least one of the following fields: whether it is necessary to report the DC voltage output by the rectifier; whether it is necessary to report the voltage of the energy storage; whether it is necessary to report the received power; and whether it is necessary to report the temperature.

[0068] In one possible implementation, the WPT report request also includes at least one of the following fields: a category field, a WPT action field, and a WPT status control field; the category field is used to indicate that the category of the WPT report request is WPT category information; the WPT action field is used to indicate that the action type corresponding to the WPT action field is the WPT report request; the WPT status control field is used to indicate the WPT status information that needs to be reported in the WPT report.

[0069] In one possible implementation, the WPT status control field includes at least one of the following fields: whether it is necessary to report the DC voltage output by the rectifier; whether it is necessary to report the voltage of the energy storage; whether it is necessary to report the received power; and whether it is necessary to report the temperature.

[0070] In one possible implementation, the WPT dismantling also includes at least one of the following fields: a category field and a WPT action field; the category field is used to indicate that the WPT dismantling is WPT category information; the WPT action field is used to indicate the action type of the WPT category information, and the action type includes the WPT dismantling.

[0071] In one possible implementation, the method further includes: sending a WPT control, where the WPT control is used to start or stop the WPT process.

[0072] In a third aspect, embodiments of the present application provide a first AMP device configured to execute the method of the first aspect or any possible implementation. The first AMP device includes a module configured to execute the method of the first aspect or any possible implementation.

[0073] In a fourth aspect, embodiments of the present application provide a third AMP device for executing the method in the second aspect or any possible implementation. The third AMP device includes a module for executing the method in the second aspect or any possible implementation.

[0074] In a fifth aspect, embodiments of the present application provide a first AMP device, comprising a processor configured to execute the method described in the first aspect or any possible implementation. The processor is configured to execute a program stored in a memory, and when the program is executed, the method described in the first aspect or any possible implementation is executed.

[0075] In a possible implementation, the memory is located outside the first AMP device.

[0076] In a possible implementation, the memory is located within the first AMP device.

[0077] In the embodiment of the present application, the processor and the memory may also be integrated into one device, that is, the processor and the memory may also be integrated together. For example, the first AMP device may be a chip.

[0078] In a possible implementation, the first AMP device further includes a transceiver, where the transceiver is configured to receive information or send information.

[0079] In a sixth aspect, embodiments of the present application provide a third AMP device, comprising a processor configured to execute the method described in the second aspect or any possible implementation. The processor is configured to execute a program stored in a memory, and when the program is executed, the method described in the second aspect or any possible implementation is executed.

[0080] In a possible implementation, the memory is located outside the third AMP device.

[0081] In a possible implementation, the memory is located within the third AMP device.

[0082] In the embodiment of the present application, the processor and the memory may also be integrated into one device, that is, the processor and the memory may also be integrated together. Exemplarily, the third AMP device may be a chip.

[0083] In a possible implementation, the third AMP device further includes a transceiver, where the transceiver is configured to receive information or send information.

[0084] In the seventh aspect, an embodiment of the present application provides a first AMP device, which includes a logic circuit and an interface, and the logic circuit and the interface are coupled; the interface is used to input and / or output information, and the logic circuit is used to execute the method described in the first aspect or any possible implementation method.

[0085] In an eighth aspect, an embodiment of the present application provides a third AMP device, which includes a logic circuit and an interface, and the logic circuit and the interface are coupled; the interface is used to input and / or output information, and the logic circuit is used to execute the method described in the second aspect or any possible implementation method.

[0086] In the ninth aspect, an embodiment of the present application provides a computer-readable storage medium, which is used to store a computer program. When the computer-readable storage medium is run on a computer, the method shown in any one of the above-mentioned first to second aspects or any possible implementation method is executed.

[0087] In a tenth aspect, an embodiment of the present application provides a computer program product, which, when executed on a computer, enables the method shown in any one of the first to second aspects or any possible implementation thereof to be executed.

[0088] In an eleventh aspect, an embodiment of the present application provides a computer program. When the computer program is run on a computer, the method shown in any one of the first to second aspects or any possible implementation is executed.

[0089] In the twelfth aspect, an embodiment of the present application provides a communication system, which includes a first AMP device and / or a third AMP device, the first AMP device is used to execute the method shown in the above-mentioned first aspect or any possible implementation of the first aspect, and the third AMP device is used to execute the method shown in the above-mentioned second aspect or any possible implementation of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0090] FIG1 is a schematic diagram of the structure of an AMP STA provided in an embodiment of the present application;

[0091] FIG2 is a schematic structural diagram of a second AMP device provided in an embodiment of the present application;

[0092] FIG3a is a schematic diagram of a communication system provided by an embodiment of the present application;

[0093] FIG3 b is a schematic diagram of a communication system shown as an example in which the second AMP device is an AP and the first AMP device is an AMP STA;

[0094] FIG3c is a schematic diagram of a communication system shown as an example in which the second AMP device is a relay node and the first AMP device is an AMP STA;

[0095] FIG4a is a schematic diagram of another communication system provided in an embodiment of the present application;

[0096] FIG4 b is a schematic diagram of a communication system shown as an example in which the second AMP device is used as an exciter and the first AMP device is used as an AMP STA;

[0097] FIG5a is a schematic diagram of an interaction phase of a wireless energy transmission method provided in an embodiment of the present application;

[0098] FIG5b is a schematic flow chart of a wireless energy transmission method using FIG3b as an example;

[0099] FIG5c is a schematic flow chart of a wireless energy transmission method using FIG3c as an example;

[0100] FIG5 d is a schematic flow chart of a wireless energy transmission method using FIG4 b as an example;

[0101] FIG6 is a schematic diagram of a flow chart of a wireless energy transmission method provided in an embodiment of the present application;

[0102] FIG7a is a schematic diagram of a format of first capability indication information provided in an embodiment of the present application;

[0103] FIG7 b is a schematic diagram of the format of a first capability element provided in an embodiment of the present application;

[0104] FIG7c is a schematic diagram of the format of a first capability frame provided in an embodiment of the present application;

[0105] FIG8a is a schematic diagram of the format of another first capability indication information provided in an embodiment of the present application;

[0106] FIG8b is a schematic diagram of the format of another first capability indication information provided in an embodiment of the present application;

[0107] FIG9a is a schematic diagram of a format of second capability indication information provided in an embodiment of the present application;

[0108] FIG9 b is a schematic diagram of the format of a second capability element provided in an embodiment of the present application;

[0109] FIG9c is a schematic diagram of the format of a second capability frame provided in an embodiment of the present application;

[0110] FIG10a is a schematic diagram of the format of another second capability indication information provided in an embodiment of the present application;

[0111] FIG10b is a schematic diagram of the format of another second capability indication information provided in an embodiment of the present application;

[0112] FIG10c is a schematic diagram of the format of another second capability indication information provided in an embodiment of the present application;

[0113] FIG11a shows a category field in the existing Wi-Fi protocol;

[0114] FIG11b is a schematic diagram of a WPT category and WPT action field provided in an embodiment of the present application;

[0115] FIG12a is a schematic diagram of a WPT establishment parameter field provided in an embodiment of the present application;

[0116] FIG12 b is a schematic diagram of a WPT state control field provided in an embodiment of the present application;

[0117] FIG13 is a schematic diagram of a WPT state control field parameter selection according to an embodiment of the present application;

[0118] FIG14a is a schematic diagram of a WPT energy control field provided in an embodiment of the present application;

[0119] FIG14b is a schematic diagram of WPT status information provided by an embodiment of the present application;

[0120] FIG15 is a schematic structural diagram of an AMP device provided in an embodiment of the present application;

[0121] FIG16 is a schematic structural diagram of an AMP device provided in an embodiment of the present application;

[0122] FIG17 is a schematic structural diagram of an AMP device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0123] To facilitate understanding of the technical solution of the present application, the present application will be further described below with reference to the accompanying drawings.

[0124] The terms "first" and "second" in the specification, claims, and drawings of this application are used only to distinguish different objects and are not used to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to the process, method, product, or device.

[0125] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It will be understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0126] In this application, "at least one (item)" means one or more, "more than one" means two or more, "at least two (items)" means two or three and more than three, and "and / or" is used to describe the association relationship of associated objects, indicating that three relationships can exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. "Or" means that two relationships can exist, such as only A exists, only B exists; when A and B are not mutually exclusive, it can also mean that three relationships exist, such as only A exists, only B exists, and A and B exist at the same time. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c".

[0127] In this application, "indication" may include direct indication, indirect indication, explicit indication, and implicit indication. When describing that a certain indication information is used to indicate A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A.

[0128] In this application, the information indicated by the indication information is referred to as the information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated, such as but not limited to, the information to be indicated can be directly indicated, such as the information to be indicated itself or the index of the information to be indicated. The information to be indicated can also be indirectly indicated by indicating other information, wherein there is an association between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other parts of the information to be indicated are known or agreed in advance. For example, the indication of specific information can also be achieved with the help of the arrangement order of each information agreed in advance (for example, stipulated by the protocol), thereby reducing the indication overhead to a certain extent. In addition, the information to be indicated can be sent together as a whole, or it can be divided into multiple sub-information and sent separately, and the sending period and / or sending time of these sub-information can be the same or different.

[0129] In this application, "sending" and "receiving" indicate the direction of signal transmission. For example, "sending information to XX" can be understood as the destination of the information is XX, which can include direct sending through the air interface, and also include indirect sending through the air interface by other units or modules. "Receiving information from YY" can be understood as the source of the information is YY, which can include direct receiving from YY through the air interface, and also include indirect receiving from YY through the air interface from other units or modules. "Sending" can also be understood as the "output" of the chip interface, and "receiving" can also be understood as the "input" of the chip interface. In other words, sending and receiving can be carried out between devices, for example, between network devices and terminal devices, or can be carried out within a device, for example, sending or receiving between components, modules, chips, software modules or hardware modules within the device through a bus, trace or interface.

[0130] The following introduces the fields involved in the embodiments of this application.

[0131] The technical solutions provided in the embodiments of the present application can be applied to the AMP field, for example, supporting wireless power transfer (WPT), wireless local area network (WLAN), or Institute of Electrical and Electronics Engineers (IEEE) series protocols.

[0132] The IEEE 802.11AMP topic interest group (TIG) and study group (SG) were established in May 2022 and March 2023, respectively. The AMP task group (TG) is expected to be established in May 2024 and initiate the development of the IEEE 802.11AMP standard specification. For example, the AMP devices involved in the AMP field can meet at least one of the following characteristics: (1) There is at least one data communication mode in the frequency band below 1 GHz (Sub-1 GHz). (2) There is at least one data communication mode in the 2.4 GHz frequency band, and the communication access type (AC) is set to access category_background (AC_BK). (3) There is at least one WPT mode in the Sub-1 GHz frequency band to indicate radio frequency (RF) energy harvesting. For example, the application scenarios of AMP include but are not limited to smart homes, smart farms, smart factories, logistics / warehousing, supermarket distribution, indoor positioning, data centers, etc.

[0133] The method provided in the embodiment of the present application can be applied to IEEE 802.11 protocols related to AMP, or to other protocols in the IEEE 802.11 series, such as 802.11a / b / g protocols, 802.11n protocols, 802.11ac protocols, 802.11ax protocols, 802.11be protocols, 802.11bn protocols (802.11bn is also known as Wi-Fi 8, or ultra-high reliability (UHR) or ultra-high reliability and throughput (UHRT) or next-generation protocols, etc., which are not listed one by one. The technical solution provided in the embodiment of the present application can also be applied to wireless personal area networks (WLANs) based on millimeter wave (MMW) and ultra-wideband (UWB) technologies. The method provided in the embodiment of the present application can be applied to IEEE802.15 series protocols, such as 802.15.4a protocol, 802.15.4z protocol or 802.15.4ab protocol, or a future generation of UWB WPAN protocol, etc., which are not listed one by one.

[0134] The technical solutions provided in the embodiments of the present application can also be applied to the following communication systems, for example, the Internet of Things (IoT) system, vehicle-to-everything (V2X, where X can represent anything), device-to-device (D2D), narrowband Internet of Things (NB-IoT) system, long-term evolution (LTE) system, fifth-generation (5G) communication system, and new communication systems that will emerge in future communication developments. For example, the V2X may include vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P) or vehicle-to-network (V2N) communication.

[0135] As AMP applications become increasingly widespread, the AMP system will be applied to a wider range of scenarios and industries, including the Internet of Things (IoT), the Internet of Vehicles (IoV), the banking industry, corporate offices, stadiums and exhibition halls, concert halls, hotel rooms, dormitories, hospital wards, classrooms, supermarkets, plazas, streets, production workshops, and warehouses. Devices supporting WLAN communication or sensing (such as access points or stations) can include sensor nodes in smart cities (such as smart water meters, smart electricity meters, and smart air quality monitoring nodes), smart devices in smart homes (such as smart cameras, projectors, displays, TVs, speakers, refrigerators, and washing machines), nodes in the Internet of Things (IoT), entertainment terminals (such as wearable devices like augmented reality (AR) and virtual reality (VR)), smart devices in smart offices (such as printers, projectors, speakers, and audio systems), IoV devices, infrastructure in everyday life (such as vending machines, self-service kiosks in supermarkets, self-service checkout machines, and self-service ordering kiosks), and equipment in large sports and music venues.

[0136] Although the embodiments of the present application are primarily based on networks based on the IEEE 802.11 series of standards, the various aspects of the embodiments of the present application can also be extended to other networks that adopt various standards or protocols. For example, Bluetooth, high-performance radio LAN (HIPERLAN) (a wireless standard similar to the IEEE 802.11 standard), wide area network (WAN), or other networks now known or developed in the future.

[0137] The following introduces the devices and terms involved in the embodiments of the present application.

[0138] 1. Devices for RF energy harvesting

[0139] Environmental energy may include, but is not limited to, radio frequency energy (i.e., RF energy), kinetic energy, thermal energy, solar energy, and other energies present in the environment. The essence of RF energy harvesting is to convert RF energy, such as RF signals, into electrical energy, such as direct current (DC) (RF-DC). For example, a device for RF energy harvesting can convert the harvested RF energy into electrical energy and then store it in an energy storage unit (such as a capacitor or battery). Alternatively, it can harvest RF energy and directly use it to drive logic circuits, digital chips, or sensor devices, thereby completing at least one of the following functions: modulation of reflected signals, transmission of reflected signals, and collection and processing of sensor information. The reflected signal shown here refers to the reflected signal of backscatter communication.

[0140] In the embodiment of the present application, the device for RF energy collection can also be referred to as a device for converting RF energy into DC, or a device capable of realizing RF energy collection, or a low-power device, or an AMP station (STA), etc. The specific name of the device is not limited in the embodiment of the present application. The AMP STA shown here can convert the RF energy it collects into electrical energy for the purpose of example only. For example, the AMP STA can also convert the RF energy into other energy, and the other energy can be used to realize functions similar to electrical energy. For ease of description, the device for RF energy collection will be referred to as the first AMP device (for example only) below. For example, the first AMP device may include an AMP STA. The AMP STA can be a low-power device of a complete machine, or it can be a chip, processing system or functional module installed in the complete machine device, etc. The device in which these chips or processing systems or functional modules are installed can realize the methods and functions of the embodiments of the present application under the control of the chip or processing system or functional module.

[0141] An AMP STA can be a low-power IoT device that supports RF energy harvesting. An AMP STA can support receiving RF energy, communicating, or sensing using the AMP protocol or the WLAN protocol, and has the ability to wirelessly transmit energy, communicate, or sense with other non-AP STAs or access points in the AMP network or the WLAN network. For example, an AMP STA can include an AMP STA of type A, an AMP STA of type B, and an AMP STA of type C. Of course, the classification of AMP STAs here is only an example. As the standard progresses, AMP STAs can be classified in other ways in the future, and the embodiments of the present application are not limited to this.

[0142] The following examples illustrate the characteristics satisfied by AMP STAs of Type A to Type C.

[0143] AMP STA of type A can meet at least one of the following conditions: RF energy is part of the energy source of this type of AMP STA, it has strong communication capability, has large energy storage capability, and supports Wi-Fi protocol. The stronger communication capability shown here can be relative to AMP STA of type B and AMP STA of type C. For example, AMP STA of type A can process PPDU with OFDM modulation, or process PPDU with on-off keying (OOK) modulation, etc. For example, AMP STA of type A can support IEEE 802.11b / g / n / ac / ax / be / bn and other protocols. The larger energy storage capacity shown here is relative to AMP STA of type B and AMP STA of type C, such as the AMP STA of type A can be provided with a battery.

[0144] Type B AMP STAs can meet at least one of the following requirements: possess a certain energy storage capacity (e.g., energy storage capacity greater than or equal to the first threshold and less than or equal to the second threshold) and support low-power transceiver operations. The energy storage capacity of this type of AMP STA is less than that of a Type A AMP STA, but greater than that of a Type C AMP STA. For example, the first threshold can be greater than or equal to the third threshold. The specific values ​​of the first, second, and third thresholds are not limited in this embodiment of the present application.

[0145] Type C AMP STAs may meet at least one of the following requirements: energy storage capability less than or equal to a third threshold (e.g., the threshold may be equal to 0), support for low-power transceiver operations, and support for backscatter communication. Such AMP STAs can achieve communication by harvesting RF energy. For example, Type C AMP STAs may not support Wi-Fi protocols such as IEEE 802.11b / g / n / ac / ax / be / bn.

[0146] All three types of AMP STAs have RF energy harvesting capabilities. For these three types of AMP STAs, Type A > Type B > Type C in terms of energy storage capacity. In terms of communication capabilities, Type A > Type B > Type C. In terms of power consumption, Type A > Type B > Type C, meaning Type C has the lowest power consumption.

[0147] Figure 1 is a schematic diagram of the structure of an AMP STA provided in an embodiment of the present application. As shown in Figure 1, the AMP STA may include at least one of the following: a WPT radio subsystem or a power subsystem. For example, the AMP STA may also include a Wi-Fi subsystem. The names of the various subsystems shown here are only examples and should not be construed as limiting the embodiments of the present application.

[0148] The power subsystem may include a power management integrated circuit (PMIC) or a power management module. The power management module may be used to provide appropriate current (I) and voltage (V) to the energy storage module for storing electrical energy. The PMIC may be used to provide appropriate voltage and timing control for the rest of the system (such as the Wi-Fi subsystem). Exemplarily, the power subsystem may also include a voltage regulator (such as a DC / DC) (not shown in FIG1 ). If the DC voltage output by the rectifier is too low (such as lower than the available voltage of the PMIC), the voltage regulator may be used to boost the voltage and convert the rectifier voltage into a usable voltage for the PMIC or the power management module.

[0149] The WPT radio subsystem can include an antenna for receiving WPT signals and a rectifier for converting RF energy into a stable DC voltage.

[0150] The Wi-Fi subsystem may include an antenna, a Wi-Fi module, and a sensor. For example, the Wi-Fi module may include a baseband circuit and a radio frequency circuit. The baseband circuit may be used to process baseband signals, and the radio frequency circuit may be used to process radio frequency signals. For example, the baseband circuit may include at least one of the following: a processor, a channel encoder, a digital signal processor, a modem, or an interface circuit. For example, the radio frequency circuit may include at least one of the following: a radio frequency amplifier, a mixer, a filter, and a demodulator. The Wi-Fi subsystem may be used to support communication over a WLAN link (such as a communication link or a peer-to-peer link as described below). For example, it may support sending at least one of the following over the WLAN link: a first capability indication, a WPT establishment request, a WPT report, or an acknowledgment (ACK). It may also support receiving at least one of the following over the WLAN link: a second capability indication, a WPT establishment response, a WPT report request, or a WPT teardown. The aforementioned processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and the like, and may implement or execute the various methods and steps described in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. For example, the processor can be used to process Wi-Fi protocols and communication data, as well as control the entire AMP device, execute software programs, process software program data, etc. For example, when the first AMP device is turned on, the processor can read the software program in the memory (not shown in Figure 1), interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor performs baseband processing on the data to be sent and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and then sends the radio frequency signal outward through the antenna in the form of electromagnetic waves. When data is sent to the first AMP device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data.

[0151] As an example, for a Type A AMP STA, the AMP STA may include a WPT radio subsystem, a power subsystem, a Wi-Fi subsystem, and an energy storage module. As another example, for a Type B AMP STA, the AMP STA may include a WPT radio subsystem, a power subsystem, and an energy storage module. For example, the AMP STA may also include a Wi-Fi subsystem. As another example, for a Type C AMP STA, the AMP STA may include a WPT radio subsystem, etc. The structure of the Type C AMP STA is not limited in this embodiment of the present application.

[0152] The structure of the AMP STA shown here is only an example. In a specific implementation, the AMP STA may have more or fewer components, which is not limited in this embodiment of the present application. The wireless transmission method provided in this embodiment of the present application can be applied to the above-mentioned type A AMP STA or type B AMP STA.

[0153] 2. Device for providing RF energy

[0154] The device for providing RF energy (or a device with a charging function) can provide RF energy to the first AMP device. For example, the device for providing RF energy can achieve the purpose of providing RF energy to the first AMP device by sending a WPT signal to the first AMP device. The WPT signal shown here is an RF signal. For example, the WPT signal can also be called an energy transmission signal, a signal for transmitting RF energy, or a signal for collecting RF energy. The name of the WPT signal is not limited in this embodiment of the application.

[0155] For ease of description, the device for providing RF energy is referred to as a second AMP device (only as an example) below. The second AMP device may have the following examples:

[0156] As an example, the second AMP device may be an AP, or referred to as an AMP AP.

[0157] An AP is a device with wireless communication capabilities that supports wireless energy transmission, communication, or awareness using WLAN protocols (including AMP protocols). It has the ability to wirelessly transmit energy, communicate, or sense with other devices in an AMP network or WLAN network (such as non-access point stations (non-AP STAs) or other access points or AMP STAs). Of course, it can also communicate or sense with other devices. For example, an AP is a device that provides services to non-AP STAs, or an AP is a device that provides services to AMP STAs. It can support the 802.11 series protocols and subsequent protocols.

[0158] The AP is equivalent to a bridge connecting the wired network and the wireless network. Its main function is to connect various wireless network clients together and then connect the wireless network to the Ethernet. The device with wireless communication function can be a complete device, or it can be a chip, processing system or functional module installed in the complete device. The device installed with these chips or processing systems or functional modules can implement the methods and functions of the embodiments of the present application under the control of the chip or processing system or functional module. For example, the access point can be an access point for a terminal (such as a mobile phone) to enter a wired (or wireless) network. It is mainly deployed in homes, buildings and campuses. The typical coverage radius is tens of meters to hundreds of meters. Of course, it can also be deployed outdoors. For another example, the AP can be a communication entity such as a communication server, router, switch, bridge, etc.; the AP can include various forms of macro base stations, micro base stations, relay stations, etc. For another example, the AP can be used to transmit energy for the AMP STA, etc. Of course, the AP can also be a chip or processing system or module in the above-mentioned various forms of equipment, so as to implement the methods and functions of the embodiments of the present application.

[0159] Exemplarily, the second AMP device may be an AP belonging to a multi-link device (MLD). Exemplarily, a multi-link device (MLD) is a device that simultaneously has multiple APs, each operating on a different frequency band or channel. A multi-link device includes multiple subordinate APs, which may be physical or logical APs. Each AP may operate on a link, a frequency band, or a channel.

[0160] As another example, the second AMP device may be an energizer (or called an energizing node or an energizing device, etc.). For ease of description, the following description will take the energizer as an example.

[0161] The exciter can be used to provide RF energy to the AMP STA. The exciter can also communicate with the AP using the Wi-Fi protocol. For example, the exciter does not have low-power communication capabilities with the AMP STA. For example, there may be no communication link between the exciter and the AMP STA.

[0162] As another example, the second AMP device can be a relay node (also known as a repeater or relay device). Relay nodes can be used to amplify signals, compensate for signal attenuation, and support communications (e.g., including long-distance communications). Generally speaking, both exciters and relay nodes can be used to provide RF energy, but relay nodes can also enable long-distance communications. For ease of description, the following uses a relay node as an example.

[0163] Figure 2 is a schematic diagram of the structure of a second AMP device provided in an embodiment of the present application. As shown in Figure 2 , the device includes at least one of the following: a power subsystem, a WPT radio subsystem, and a Wi-Fi subsystem. The names of the subsystems shown here are merely examples and should not be construed as limiting the embodiments of the present application.

[0164] The power subsystem can include a power supply module and a voltage regulator (such as a DC / DC). The power supply module can be used to provide DC power, while the voltage regulator is a device that converts one DC voltage to another. The voltage regulator can be used to boost the input voltage when it is low, or to step down the input voltage when it is high. These devices provide DC power at the correct voltage to different parts of the system.

[0165] A WPT radio subsystem can include an RF generator, a power amplifier (PA), and an antenna. This WPT radio subsystem can be used to transmit WPT signals. For example, the RF generator generates the radio frequency for communication or WPT signals, the PA amplifies the power of the WPT signal, and the antenna transmits the WPT signal.

[0166] The Wi-Fi subsystem may include an antenna and a Wi-Fi module, such as the Wi-Fi module may include a baseband circuit and a radio frequency circuit. For the description of the Wi-Fi module, please refer to Figure 1 and will not be described in detail here. The Wi-Fi subsystem can be used to support the communication of a WLAN link (such as a communication link and a P2P link as shown below). For example, it supports sending at least one of the following items on a WLAN link: a second capability indication information, a WPT establishment response, a WPT report request or a WPT removal, etc. For example, it supports receiving at least one of the following items on a WLAN link: a first capability indication information, a WPT establishment request, a WPT report or ACK, etc. For the description of the Wi-Fi module and the antenna, please refer to the description of Figure 1 and will not be described in detail here.

[0167] The structure of the second AMP device shown here is only an example. In a specific implementation, the second AMP device may have more or fewer devices, and the embodiments of the present application are not limited to this.

[0168] 3. Device that communicates with the first AMP device

[0169] This device can be used to communicate with the first AMP device, or the device can communicate with the first AMP device, or the device has the ability to communicate with the first AMP device. For example, the device can send information to the first AMP device over a WLAN link, or receive information from the first AMP device over a WLAN link. For ease of description, in this embodiment of the application, the device that can communicate with the first AMP device is referred to as a third AMP device.

[0170] Based on different capabilities, the second AMP device can also be used to communicate with the first AMP device. For example, the second AMP device can be used to both provide RF energy and communicate with the first AMP device. If the second AMP device is an AP or a relay node, the AP or relay node can be used to both provide RF energy and communicate with the first AMP device.

[0171] As an example, the third AMP device can be the same as the second AMP device, for example, the second AMP device and the third AMP device can be the same device, which can be used to provide RF energy and communicate with the first AMP device. In this case, the second AMP device (i.e., the third AMP device) can be an AP or a relay node.

[0172] As another example, the third AMP device is different from the second AMP device. For example, the second AMP device is an exciter, and the third AMP device may be an AP or a relay node that can communicate with the first AMP device. They are not listed here one by one.

[0173] In the embodiment of the present application, the first AMP device, the second AMP device and the third AMP device are distinguished by their different functions. The embodiment of the present application does not limit the specific product forms of these three devices.

[0174] 4. WLAN link and WPT link

[0175] WLAN link: A wireless transmission link between two devices in a WLAN. If a transmitted signal is transmitted via a WLAN link, the receiving end can demodulate useful information from the received signal. The useful information may include, but is not limited to, data, control or management information, etc. The WLAN link shown in the embodiment of the present application may include, but is not limited to: an AMP-based communication link, a P2P link or a communication link, etc. The useful information includes, but is not limited to, the following: the first capability indication information, the second capability indication information, the WPT establishment request, the WPT establishment response, the WPT report request, the WPT report, the WPT removal or ACK, etc.

[0176] A WPT link (or WPT energy transmission link) is a link used for wireless energy transmission between two devices in a WLAN. If the transmitted signal is transmitted over a WPT link, the receiver can directly convert the received RF signal to DC energy. In other words, the receiver does not need to perform information demodulation.

[0177] The following introduces the system involved in the embodiments of the present application.

[0178] Figure 3a is a schematic diagram of a communication system provided by an embodiment of the present application. The second AMP device in Figure 3a can both provide RF energy to the first AMP device and communicate with the first AMP device.

[0179] As a possible implementation method, take the second AMP device as an AP and the first AMP device as an AMP STA as an example, as shown in Figure 3b. The WPT link in Figure 3b can be used to transmit WPT signals. That is, the link used to transmit WPT signals can be called a WPT link. The WPT link can also be called an energy transfer link, etc. The specific name of the WPT link is not limited in the embodiment of the present application. The AMP downlink (DL) in Figure 3b refers to the downlink from AP to AMP STA. The AMP uplink (UL) refers to the uplink from AMP STA to AP. The AMP DL or AMP UL can also be called an AMP-based communication link.

[0180] The WPT link and the communication link (or data link) shown in the embodiment of the present application are functionally distinguished. In a specific implementation, the frequency bands supported by these two types of links may be the same or different. The communication link may belong to a WLAN link. As an example, the WPT link may not belong to a WLAN link. As another example, the WPT link may also belong to a WLAN link. The embodiment of the present application does not limit whether the WPT link belongs to a WLAN link. For example, the WLAN link may include a P2P link. The WLAN link shown in the embodiment of the present application may be one of the following links: a P2P link, an AMP UL, an AMP DL, a UL, or a DL.

[0181] For example, the AP and the AMP STA can communicate through a communication link. For example, the AMP DL or AMP UL can support the 2.4 GHz frequency band, or the frequency band below 1 GHz (Sub-1 GHz). The AP can also provide a WPT signal for the AMP STA. For example, the WPT link can support the 2.4 GHz frequency band, or the Sub-1 GHz frequency band. For example, if the AMP STA is a type A or type B AMP STA, the time when the AP sends the WPT signal and the time when the AMP STA communicates can be decoupled. For another example, if the AMP STA is a type C AMP STA, the time when the AP sends the WPT signal and the time when the AMP STA communicates can be coupled. That is, the AMP STA needs to receive the WPT signal to collect energy before communicating.

[0182] For example, AMP DL and AMP UL can support the PPDU format in existing Wi-Fi protocols (such as 802.11b / g / n protocols, etc.). Of course, the AMP DL and the AMP UL may also support the PPDU format in other Wi-Fi protocols that will appear later, which are not listed here. For another example, AMP DL and AMP UL can support the PPDU format in the AMP protocol, such as the new PPDU format that will appear later. The embodiments of the present application do not limit the PPDU format used in communication between the AP and the AMP STA.

[0183] As another possible implementation, taking the second AMP device as a relay node and the first AMP device as an AMP STA as an example, as shown in Figure 3c. For an explanation of the WPT link, AMP DL, and AMP UL, please refer to Figure 3b. The relay node in Figure 3c can also communicate with the AP via DL or UL.

[0184] Exemplarily, the relay node can communicate with the AMP STA, and the relay node can provide a WPT signal for the AMP STA. The UL or DL ​​in Figure 3c can support a sub-1GHz frequency band, or a 2.4GHz frequency band, or a 5GHz frequency band, or a 6GHz frequency band, etc., which are not listed here one by one. The UL or DL ​​in Figure 3c can support Wi-Fi protocols (such as 802.11b / g / n / ac / ax / be / bn protocols, etc.) or other communication protocols, etc., which are not limited to the embodiments of the present application. For the frequency bands supported by AMP UL or AMP DL and the frequency bands supported by the WPT link, please refer to the description in Figure 3b, which will not be described in detail here.

[0185] The AMP UL, AMP DL, UL, and DL shown in the embodiments of the present application are all communication links. The PPDU format supported by the AMP UL and AMP DL may be different from the PPU format supported by UL and DL. For example, UL and DL may support more frequency bands or more PPDU formats. For another example, the PPDU format supported by AMP UL and AMP DL may be AMP PPU, and the format of the AMP PPDU is different from the existing PPDU format in the Wi-Fi protocol. For another example, the protocol supported by UL and DL may not be limited to the Wi-Fi protocol. The differences between the various communication links are not listed here one by one.

[0186] The above descriptions of AMP UL, AMP DL, UL, DL frequency bands or PPDU formats also apply to information transmitted on each link. Specific information about transmission on different links can be found below and will not be detailed here.

[0187] Figure 4a is a schematic diagram of another communication system provided by an embodiment of the present application. The second AMP device and the third AMP device in Figure 4a are different devices. The second AMP device is used to provide RF energy to the first AMP device, and the third AMP device is used to communicate with the first AMP device.

[0188] For example, the second AMP device is an exciter, the first AMP device is an AMP STA, and the third AMP device is an AP, as shown in Figure 4b. For the description of each link, please refer to Figure 3b or Figure 3c, which will not be described in detail here.

[0189] As shown in Figure 4b, the exciter can provide a WPT signal to the AMP STA, and the AP and AMP STA can communicate. For the description of the frequency bands or PPDU formats supported by each link in Figure 4b, please refer to Figure 3b or Figure 3c and will not be described in detail here.

[0190] The types of the first, second, and third AMP devices shown in Figures 3b, 3c, and 4b are merely examples and do not limit the types of APs, AMP STAs, exciters, and relay nodes in the embodiments of the present application. Furthermore, the number of devices shown in Figures 3a through 3c and 4a through 4b is merely an example; in a specific implementation, the number of devices may be greater or lesser, and this is not a limitation in the embodiments of the present application.

[0191] The systems shown in Figures 3a to 3c and Figures 4a to 4b are only examples. As the standard progresses, other types of topologies may appear in the future. As long as the topologies that appear can be applied to the interaction process shown below, they fall within the scope of protection of the embodiments of the present application.

[0192] Generally speaking, before the second AMP device provides RF energy to the first AMP device, the second AMP device and the first AMP device may perform parameter negotiation and then decide whether to establish a WPT link.

[0193] In light of this, embodiments of the present application provide a wireless energy transmission method and apparatus that improve the interaction process between various devices, enhancing the communication link-assisted WPT link process at the protocol level, thereby enabling a first AMP device to harvest RF energy. Consequently, the first AMP device can utilize the harvested RF energy for communication or sensing, for example. Exemplarily, the first AMP device can also store electrical energy.

[0194] FIG5 a is a schematic diagram of an interaction phase of a wireless energy transmission method provided in an embodiment of the present application.

[0195] As an example, when a second AMP device (such as Figures 3a to 3c) can both provide RF energy to the first AMP device and communicate with the first AMP device, the second AMP device can interact with the first AMP device, such as for parameter negotiation. In this case, the third AMP device shown in Figure 5a below can be the same device as the second AMP device, as shown in Figure 5b or Figure 5c. Figure 5b is a schematic flow chart of the wireless energy transmission method using Figure 3b as an example; Figure 5c is a schematic flow chart of the wireless energy transmission method using Figure 3c as an example.

[0196] As another example, if the second AMP device (such as Figure 4a or Figure 4b) is unable to communicate with the first AMP device, a third AMP device can interact with the first AMP device, such that the parameters negotiated between the third AMP device and the first AMP device may include parameters of the second AMP device. In this case, the third AMP device shown in Figure 5a below and the second AMP device can be different devices, such as shown in Figure 5d. Figure 5d is a schematic flow chart of the wireless energy transmission method using Figure 4b as an example.

[0197] With respect to Figure 5b, the AP can be associated with the AMP STA, and the AP and the AMP STA can communicate through a WLAN link. With respect to Figure 5c, the relay node provides RF energy to the AMP STA, such as the AMP STA and the relay node can communicate through a P2P link. If an association has been established between the relay node and the AP, a P2P link has been established between the relay node and the AMP STA. With respect to Figure 5d, an association has been established between the exciter and the AP, such as the exciter has informed the AP of its capability information. The AP can be associated with the AMP STA. The embodiments of the present application do not limit the method of establishing an association or the method of establishing a P2P link. For the description of Figures 5b to 5c, please refer to Figure 5a, and the repeated parts will not be described in detail.

[0198] As shown in FIG5a , the present application provides a wireless energy transmission method in which the interactive phase includes at least one of the following phases. It should be understood that each of the following phases may interact with each other or be implemented independently of each other:

[0199] 501. WPT capability exchange phase.

[0200] For example, during the WPT capability exchange phase, a first AMP device may indicate its capabilities to a third AMP device. For example, the first AMP device may send first capability indication information to the third AMP device. This first capability indication information may be used to indicate the first AMP device's capability to receive WPT signals. Alternatively, this first capability indication information may be used to indicate the first AMP device's capability to perform wireless energy transmission. Alternatively, this first capability indication information may be used to indicate the first AMP device's capability related to receiving WPT signals. Alternatively, this first capability indication information may be used to indicate the first AMP device's capability to receive WPT signals to the third AMP device.

[0201] As an example, as shown in Figures 5b and 5d, the AMP STA may send first capability indication information to the AP, and the AP receives the first capability indication information. The first capability indication information may be information indicating the AMP STA's ability to receive WPT signals to the AP. As another example, as shown in Figure 5c, the AMP STA may send first capability indication information to a relay node, and the relay node receives the first capability indication information. The first capability indication information may be information indicating the AMP STA's ability to receive WPT signals to the relay node. For the specific content of the first capability indication information, please refer to Figure 6 and will not be described in detail here.

[0202] For example, during the WPT capability exchange phase, the third AMP device may indicate the capabilities of the second AMP device to the first AMP device. For example, the third AMP device may send second capability indication information to the first AMP device. This second capability indication information may be used to indicate the second AMP device's capability to send WPT signals. Alternatively, this second capability indication information may be used to indicate the second AMP device's capability to perform wireless energy transmission. Alternatively, this second capability indication information may be used to indicate the second AMP device's capability related to sending WPT signals. Alternatively, this second capability indication information may be used to indicate to the first AMP device the second AMP device's capability to send WPT signals.

[0203] As an example, as shown in Figure 5b, the AP may send second capability indication information to the AMP STA, and the AMP STA receives the second capability indication information. The second capability indication information may be information about the AP's ability to send WPT signals indicated by the AP to the AMP STA. As another example, as shown in Figure 5c, the relay node may send second capability indication information to the AMP STA, and the AMP STA receives the second capability indication information. The second capability indication information may be information about the relay node's ability to send WPT signals indicated by the relay node to the AMP STA. As another example, as shown in Figure 5d, the AP sends second capability indication information to the AMP STA, and the AMP STA receives the second capability indication information. The second capability indication information may be information about the exciter's ability to send WPT signals indicated by the AP to the AMP STA. For the specific content of the second capability indication information, please refer to Figure 6, which will not be described in detail here.

[0204] In the WPT capability interaction phase, the step regarding the first capability indication information may be optional, or the step regarding the second capability indication information may be optional. In the embodiment of the present application, the WPT capability interaction phase may also be referred to as the AMP capability interaction phase or the capability negotiation phase, etc., and the specific name of this phase is not limited.

[0205] 502. WPT setup phase.

[0206] The WPT establishment phase is also the phase for establishing the WPT process (or WPT procedure), and may include, for example, the WPT establishment process. This WPT establishment process is used to prepare for the subsequent WPT process, or to determine whether the WPT process can proceed smoothly, or to determine whether the subsequent WPT process can be successfully executed. For example, the WPT establishment process may also be referred to as the WPT process establishment process or the WPT process establishment phase, etc., which are not listed here one by one.

[0207] As an example, the initiator of the WPT establishment process can be the first AMP device. After the first AMP device initiates the WPT establishment process, a third AMP device determines whether the WPT establishment process is successfully established. Generally speaking, the processing capacity of the third AMP device is greater than that of the first AMP device. Therefore, having the third AMP device determine whether the WPT establishment process is successfully established can effectively improve the success rate of the WPT establishment process. As the end requesting RF energy, initiating the WPT establishment process through the first AMP device can also improve the efficiency of the second AMP device providing RF energy to the first AMP device, allowing the second AMP device to charge the first AMP device in a timely manner.

[0208] As another example, the initiator of the WPT establishment process may be a third AMP device. For example, after learning the capability information of the first AMP device or the second AMP device, the third AMP device may initiate the WPT establishment process. In this case, the first AMP device may accept the WPT establishment process.

[0209] The following is illustrated by taking the WPT establishment process initiated by the first AMP device as an example, but it should not be understood as a limitation on the embodiments of the present application. The difference between the WPT establishment process initiated by the first AMP device and the WPT establishment process sent by the third AMP device is that the WPT establishment response in the WPT establishment process initiated by the first AMP device can be used to indicate whether the establishment is successful, and the WPT establishment response in the WPT establishment process initiated by the third AMP device can be confirmation information of the WPT establishment request, such as confirming that the first AMP device has correctly received the WPT establishment request. Of course, the difference in the WPT establishment response shown here is only an example. In a specific implementation, the WPT establishment process initiated by the first AMP device and the WPT establishment process sent by the third AMP device can also be similar. For example, the following description of the WPT establishment request and the WPT establishment response can also be applied to the WPT establishment process initiated by the third AMP device.

[0210] During the WPT establishment phase, the first AMP device and the third AMP device may exchange WPT status information. For example, the WPT status information may be used to indicate the WPT status to be reported by the first AMP device in the WPT report. Alternatively, the WPT status information may be used to indicate the WPT status that the first AMP device needs to report in the WPT report. Alternatively, the WPT status information may be used to indicate the WPT status to be reported by the first AMP device. The first AMP device may send a WPT setup request (WPT setup request) including WPT status information to the third AMP device. After receiving the WPT setup request, the third AMP device may reply with a WPT setup response (WPT setup response). For example, the WPT setup response may be used to indicate whether the WPT process can be successfully established. As shown in Figures 5b to 5d, the AMP STA may initiate the WPT establishment process by sending a WPT setup request. The AP or relay node may feedback a WPT setup response. For other descriptions of the WPT setup request and the WPT setup response, please refer to Figures 12a, 12b, and 13, which will not be described in detail here.

[0211] When the WPT establishment process indicates that the WPT process can be established successfully, the second AMP device may provide RF energy to the first AMP device, such as the second AMP device sending a WPT signal to the first AMP device.

[0212] As an example, as shown in Figure 5b, the AP can send a WPT signal to the AMP STA via a WPT link. The continuous transmission duration shown in Figures 5b to 5d refers to the continuous transmission duration of the WPT signal. Figures 5b to 5d illustrate the continuous transmission duration of the WPT signal, and the durations shown in the figures should not be understood as limiting the embodiments of the present application. The process of the second AMP device transmitting the WPT signal shown in Figures 5b to 5d can be referred to as a WPT process.

[0213] As another example, as shown in FIG5 c , the relay node may send a WPT signal to the AMP STA through a WPT link.

[0214] As another example, as shown in Figure 5d, since the ability of the AP to interact with the AMP STA is the ability of the exciter, the exciter provides RF energy to the AMP STA. Therefore, after the WPT establishment phase is completed, the AP can send control information #1 to the exciter. The control information #1 can be included in a control frame, a management frame, or a data frame. For example, the control information #1 can be included in a trigger frame, such as the control information #1 can be used to control (or trigger or activate) the exciter to send a WPT signal. In other words, the control information #1 can be used to instruct the exciter to enter the WPT process (or called a WPT process). For example, the control information #1 can include 1 bit, and the 1 bit can be used to indicate whether to trigger the exciter to start sending the WPT signal. For another example, the control information #1 can include 1 bit, and the 1 bit can be used to indicate to stop sending the WPT signal or start sending the WPT signal. For another example, the control information #1 can be included in a data frame or a control frame, such as the control information #1 can be used to indicate the transmission time of the WPT signal, such as the control information #1 can indicate the sending period of the WPT signal, or indicate the start transmission time and end transmission time of the WPT signal, or indicate the continuous transmission duration of the WPT signal, etc. The specific forms of the control information #1 are not listed here one by one. For example, the WPT establishment response shown in the embodiment of the present application can also include the above-mentioned control information #1, or the WPT establishment response and control information #1 are included in the same trigger frame. For example, the AP can also instruct the AMP STA on the transmission time of the WPT signal or instruct the AMP STA on the activation indication of the WPT signal, etc. The control information shown in the embodiment of the present application can also be called WPT control, such as control information #1 can be called WPT control #1, control information #2 can be called WPT control #2, etc., which are not listed here one by one.

[0215] If the WPT establishment process indicates a failure, the second AMP device will be unable to provide RF energy to the first AMP device. If the WPT establishment process fails, and if the first AMP device and the third AMP device remain associated, the first AMP device can re-initiate a WPT establishment request when it needs to re-establish the WPT process, or the third AMP device can re-initiate a WPT establishment request. If the first AMP device and the third AMP device lose their association, the first AMP device must re-establish an association with the third AMP device and proceed through the WPT capability exchange phase and WPT establishment phase.

[0216] 503. WPT report stage.

[0217] The WPT reporting phase may be a reporting phase of a WPT process, and may include, for example, a WPT reporting process. The WPT reporting process may be used to provide feedback on information within the WPT process, or information within the WPT process. For example, the WPT reporting process may be used to provide feedback on at least one of WPT status and WPT power control information.

[0218] As an example, the initiator of the WPT report process can be a third AMP device. For example, the third AMP device can send a WPT report request (WPT report request) to the first AMP device (such as the WPT report request represented by the dotted part of Figures 5b to 5d). The WPT report request can be used to request the WPT status information of the first AMP device during the energy transmission process. The first AMP device can return a WPT report (WPT report). For example, the third AMP device can send the WPT report request while the first AMP device is receiving the WPT signal, so that the third AMP device can promptly know the status of the first AMP device receiving the WPT signal. For example, the third AMP device can predict whether the temperature or voltage will rise to a threshold within a period of time in the future based on the temperature or voltage reported by the first AMP device. For example, the third AMP device can adjust the transmission power based on the WPT power control information reported by the first AMP device.

[0219] As another example, the initiator of the WPT report process can be the first AMP device. For example, the first AMP device can directly send a WPT report to the third AMP device. The first AMP device may not need to wait for the third AMP device to send a WPT report request, but directly send the WPT report. For example, the first AMP device can send the WPT report when a WPT alarm is detected or the battery is fully charged. Thus, the first AMP device can implicitly instruct the third AMP device to control the second AMP device to stop sending the WPT signal (as shown in Figure 5d) by sending a WPT report, or implicitly instruct the second AMP device to stop sending the WPT signal (as shown in Figure 5b or Figure 5c), thereby protecting the circuit of the first AMP device, saving resources for transmitting WPT signals, and reducing the power consumption of the second AMP device. For other explanations on WPT report requests and WPT reports, please refer to Figures 14a and 14b, which will not be described in detail here.

[0220] 504. WPT teardown phase.

[0221] The WPT removal phase refers to the need to stop or terminate the WPT process, such as including a WPT removal process. The WPT removal process may also be referred to as a WPT termination process, etc., and the present embodiment does not limit this name.

[0222] As an example, when the WPT state indicated by the WPT report in the WPT reporting phase is a preset state, the WPT report may also implicitly indicate that the WPT process is torn down. The preset state shown here may include, but is not limited to, an alarm state or a fully charged state.

[0223] As another example, the initiator of the WPT teardown process can be a third AMP device. For example, the third AMP device can send a WPT teardown (or termination indication, etc.) (such as the WPT teardown indicated by the dashed lines in Figures 5b to 5d). This WPT teardown can be used to indicate the teardown of the WPT process, or to terminate the WPT process, or to tear down the WPT process. The WPT teardown process initiated by the third AMP device via the teardown indication explicitly indicates that the WPT process is to be removed.

[0224] Taking Figure 5d as an example, when the control information #1 is used to indicate the transmission time of the WPT signal, the exciter can automatically stop sending the WPT signal based on the transmission time. As another example, during or after the WPT dismantling phase, the AP can send control information #2 to the exciter. This control information #2 can be included in a control frame, a management frame, or a data frame. This control information #2 can be used to control the exciter to stop sending the WPT signal. Exemplarily, this control information #2 can be included in a trigger frame. For example, this control information #2 can include one bit, which can be used to indicate whether to trigger the exciter to stop sending the WPT signal. In other words, this control information #2 can be used to instruct the exciter to stop the WPT process (also known as the WPT flow). For example, this control information #2 can include one bit, which can be used to indicate whether to stop sending the WPT signal or to start sending the WPT signal. For example, the value of the one bit in the control information #1 can be 1 to indicate starting sending the WPT signal, while the value of the one bit in the control information #2 can be 0 to indicate stopping sending the WPT signal. For more information about control information #2, refer to the description of control information #1 and are not detailed here. For example, WPT teardown can also include control information #2, or both WPT teardown and control information #2 can be included in the same trigger frame. For example, the AP can instruct the AMP STA to stop transmitting WPT signals.

[0225] After the current process is terminated, if the first AMP device and the third AMP device remain associated, when the first AMP device needs to re-establish the WPT process, the first AMP device can re-initiate a WPT establishment request, or the third AMP device can re-initiate a WPT establishment request. After the current process is terminated, if the first AMP device and the third AMP device are disconnected, the first AMP device needs to re-establish an association with the third AMP device and perform the WPT capability exchange phase and WPT establishment phase.

[0226] The embodiments of the present application improve the interaction process involved in the WPT process, refine the steps to be performed by each device, and thus effectively improve the interaction efficiency between devices.

[0227] The following describes in detail the various stages involved in the embodiments of the present application.

[0228] FIG6 is a flow chart of a wireless energy transmission method provided in an embodiment of the present application. As shown in FIG6 , the method includes:

[0229] In a possible implementation, the method shown in FIG6 may include step 601:

[0230] 601. A first AMP device sends first capability indication information to a third AMP device. Correspondingly, the third AMP device receives the first capability indication information.

[0231] The following first describes the format of the parameter indicated by the first capability indication information, and then describes the parameter content indicated by the first capability indication information. For ease of description, the following uses the first parameter as an example to illustrate the format of the parameter indicated by the first capability indication information. The description of the indication format of the first parameter also applies to other parameters indicated by the first capability indication information.

[0232] As an example, the first capability indication information may indicate the value of the first parameter in an indexed manner (or referred to as a mapping relationship). The number of bits occupied by the first parameter may be related to the different values ​​of the first parameter. If the number of bits occupied by the first parameter is m bits, then the m bits may represent 2 of the first parameter. m values. m can be a positive integer. For example, if m=2, 0 can represent the first parameter #1, 1 can represent the first parameter #2, 2 can represent the first parameter #3, and 3 can represent the first parameter #4. The "0 to 3" shown here is shown as an example of decimal, but it should not be understood as a limitation on the embodiments of the present application. In a specific implementation, different values ​​can be represented by binary, which will not be listed here one by one.

[0233] As another example, the first capability indication information may indicate the value of the first parameter in the form of a bitmap. The number of bits occupied by the first parameter is still related to the different values ​​of the first parameter. If the number of bits occupied by the first parameter is m bits, then the m bits can represent m values ​​of the first parameter. Each bit can correspond to a value, such as a bit value of 1 can indicate that the value of the first parameter is the value corresponding to the bit. For example, m=3, the bitmap is 010, then the value of the first parameter can be the value corresponding to the bit "1".

[0234] In an embodiment of the present application, each parameter indicated by the first capability indication information may be in the same indication form, or there may be at least two parameters with different indication forms, which is not limited in this embodiment of the present application. The number of bits occupied by each parameter indicated by the first capability indication information may be the same, or there may be at least two parameters with different number of bits occupied, which is not limited in this embodiment of the present application. The indication forms of the various parameters shown below and the number of bits occupied by each field are merely examples, and the embodiments of the present application are not limited thereto.

[0235] The following describes the parameter content indicated by the first capability indication information.

[0236] The first capability indication information includes at least one of the following: a frequency band supported by the first AMP device, a bandwidth supported by the first AMP device, or a WPT waveform supported by the first AMP device.

[0237] (1A) The frequency band supported by the first AMP device can be used to indicate the frequency band of the WPT signal received by the first AMP device, or the first AMP device can support receiving the WPT signal in which frequency band, or indicate the frequency band for transmitting the WPT signal. For example, the frequency band supported by the first AMP device can be carried in the WPT frequency support field. For example, the WPT frequency support field can occupy 2 bits. The relationship between the value and meaning of the field can be as follows: 0 indicates that the frequency band is Sub-1 GHz, 1 indicates that the frequency band is 2.4 GHz, 2 indicates that the frequency band can be Sub-1 GHz or 2.4 GHz (i.e., 2 indicates that both Sub-1 GHz and 2.4 GHz are supported), and 3 is a reserved value. As the standard progresses, subsequent WPT signals can support more frequency bands, and the number of bits occupied by the WPT frequency support field can be even greater.

[0238] The relationship between the values ​​and meanings of the various fields listed in the embodiments of the present application is only an example and should not be understood as a limitation on the embodiments of the present application. The names of the various fields listed in the embodiments of the present application are only examples and should not be understood as a limitation on the embodiments of the present application. Similarly, the number of bits occupied by each field is also an example. As the standard progresses, the different values ​​supported by each parameter may be more or less, that is, the number of bits occupied by the field carried by each parameter may also be more or less, etc., and the embodiments of the present application do not limit this.

[0239] For example, if the value of the WPT Frequency Support field is 1 (01 in binary), it means that the first AMP device can support receiving WPT signals at 2.4 GHz. This is illustrated here as an index. For example, the frequency band supported by the first AMP device can also be indicated by a bitmap. Still using the above relationship as an example, the WPT Frequency Support field can occupy 3 bits. For example, the first bit can be used to indicate whether the first AMP device supports receiving WPT signals in the sub-1 GHz frequency band, the second bit can be used to indicate whether the first AMP device supports receiving WPT signals in the 2.4 GHz frequency band, and the third bit can be a reserved value. For example, if the WPT Frequency Support field is 010, it means that the first AMP device can support receiving WPT signals in the 2.4 GHz frequency band. For another example, if the WPT Frequency Support field is 110, it means that the first AMP device can support receiving WPT signals in both the 2.4 GHz frequency band and the sub-1 GHz frequency band. Other parameters can also be indicated by a bitmap, which will not be listed one by one below.

[0240] In this embodiment of the present application, if the frequency band supported by the first AMP device differs from the frequency band supported by the second AMP device, even if the second AMP device sends a WPT signal to the first AMP device, the first AMP device will not be able to receive the WPT signal. Therefore, during the WPT capability exchange phase, the first AMP device indicates its supported frequency band, allowing the third AMP device to correctly determine whether the first AMP device can successfully receive the WPT signal, thereby improving communication efficiency.

[0241] (2A) The bandwidth supported by the first AMP device can be used to indicate the bandwidth of the channel containing the WPT signal received by the first AMP device, or the channel bandwidth of the WPT signal. Because the link used to transmit the WPT signal is a WPT link, the bandwidth supported by the first AMP device can also be used to indicate the channel bandwidth of the WPT link. For example, the bandwidth supported by the first AMP device can be carried in the WPT bandwidth field.

[0242] As an example, the WPT link can have the same channel division as the communication link. For example, the center frequency of the channel bandwidth of the WPT link is the same as the center frequency of the channel bandwidth of the communication link. As another example, the WPT link can have a different channel division than the communication link. For example, the center frequency of the channel bandwidth of the WPT link can be different from the center frequency of the channel bandwidth of the communication link.

[0243] For example, the WPT bandwidth field can occupy 3 bits. The relationship between the value and meaning of this field can be as follows: 0 represents 1MHz, 1 represents 2MHz, 2 represents 4MHz, 3 represents 8MHz, 4 represents 16MHz, and 5-7 are reserved. As the standard progresses, the frequency bands supported by subsequent WPT links will increase, and the division of channel bandwidth may also change accordingly. This is not limited in the present embodiment.

[0244] In this embodiment of the present application, if the channel bandwidth supported by the first AMP device does not match the channel bandwidth supported by the second AMP device, the power of the WPT signal received by the first AMP device may be unstable. Therefore, during the WPT capability exchange phase, the power stability of the WPT signal can be ensured by exchanging the channel bandwidths supported by the first and second AMP devices.

[0245] (3A) The WPT waveform supported by the first AMP device can be used to indicate which modulation method is used to generate the WPT signal received by the first AMP device, or the modulation method used by the WPT signal. For example, the WPT waveform supported by the first AMP device can be carried in the WPT modulation field. For example, the WPT modulation field can occupy 3 bits. For example, the relationship between the value and meaning of this field can be as follows: 0 represents frequency modulated continuous wave (FMCW), 1 represents direct sequence spread spectrum (DSSS), 2 represents frequency-hopping spread spectrum (FHSS), 3 represents time hopping spread spectrum (THSS), 4 represents chirp spread spectrum (CSS), 5 represents orthogonal frequency division multiplexing (OFDM), and 6 to 7 are reserved values. For example, if the value of the WPT modulation field is 0, it means that the first AMP device can support WPT signals modulated by FMCW modulation. After receiving the WPT signal, the first AMP device converts it into a DC signal through a rectifier. The modulation methods supported by the first AMP device may be one or more of the modulation methods listed above, or may include other modulation methods that appear later, etc., which are not limited in the embodiments of the present application. Of course, when the first AMP device can support all modulation methods, the WPT modulation field may not appear. Similarly, when the second AMP device supports all modulation methods, the WPT modulation field may not appear in the second capability indication information sent by the second AMP device, that is, the WPT modulation field indicates support for all modulation methods by default.

[0246] In an embodiment of the present application, when the WPT waveform supported by the first AMP device is inconsistent with the WPT waveform supported by the second AMP device, the first AMP device will be unable to convert the received WPT signal into a DC signal through the rectifier, and thus the WPT signal will be unable to provide RF energy to the first AMP device.

[0247] Figure 7a is a schematic diagram of the format of a first capability indication information provided in an embodiment of the present application. The number of bits and the position (or order) of each field shown in Figure 7a are merely examples and should not be construed as limiting the embodiments of the present application. The description of the number of bits and positions is also applicable to the various formats shown below.

[0248] Exemplarily, the first capability indication information can be carried in a first capability element. FIG7 b is a schematic diagram of the format of a first capability element provided in an embodiment of the present application. As shown in FIG7 b , the first capability element may include an element ID, a length, an element ID extension, and the first capability indication information. The element ID field and the element ID extension field may be used to identify the first capability element. The length field may be used to indicate the length of the first capability element.

[0249] Exemplarily, the first capability element may further include a present field (not shown in Figures 7a to 7c), which may be used to indicate the fields that will appear in the first capability indication information. For example, the present field may indicate the fields in which the first capability indication information appears in the form of a bitmap. As an example, the number of bits occupied by the present field may be equal to the maximum number of fields that the first capability indication information can carry. Taking Figure 7b as an example, the present field may occupy 3 bits, such as the first bit may be used to indicate whether the WPT frequency support field appears, the second bit may be used to indicate whether the WPT bandwidth field appears, and the third bit may be used to indicate whether the WPT modulation field appears. As another example, the number of bits occupied by the present field may be equal to a fixed value. For example, the number of bits occupied by the present field may be equal to the number of optional fields in the first capability element. The fields shown in the dotted part of Figure 8a or Figure 8b below may be optional fields.

[0250] Exemplarily, the first capability element can be carried in a first capability frame. FIG7c is a schematic diagram of the format of a first capability frame provided in an embodiment of the present application. As shown in FIG7c, the first capability frame may include a frame control and a first capability element. The frame control field may be used to identify the type of the first capability frame, such as a management frame, a control frame, or a data frame. The embodiment of the present application does not limit other fields in the first capability frame.

[0251] As an example, the first capability frame may be a probe request frame. As another example, the first capability frame may be an association request frame. The specific frame names of the first capability frames are not described in detail here.

[0252] Figures 7b and 7c exemplarily show the three parameters included in the first capability indication information. As shown below, the first capability indication information can also indicate more parameters. When the first capability indication information indicates more parameters, the first capability indication information is also applicable to the format shown in Figures 7b and 7c, which will not be listed one by one below.

[0253] Furthermore, the first capability indication information may also include at least one of the following: the receiving power sensitivity of the first AMP device or the type of the first AMP device.

[0254] (4A) The receive power sensitivity of the first AMP device can be used to indicate the receive power threshold of the first AMP device when receiving a WPT signal, or can indicate the minimum receive power of the first AMP device when receiving a WPT signal, or can indicate the maximum receive power of the first AMP device when receiving a WPT signal. The maximum receive power can be used by the AP to determine whether the power of the WPT signal after reaching the first AMP device exceeds the maximum receive power that the first AMP device can withstand when transmitting a WPT signal using a fixed EIRP (such as WPT EIRP Changeable = 0 below) or a minimum EIRP (such as WPT EIRP Changeable = 1 below). If so, circuit breakdown may occur.

[0255] For example, the receiving power sensitivity of the first AMP device can be carried in the receiver sensitivity field. For example, the receiver sensitivity field can occupy 2 bits. For example, the relationship between the value and meaning of this field can be as follows: 0 represents -20dBm, 1 represents -30dBm, 2 represents -45dBm, and 3 represents -90dBm. For example, if the value of the receiver sensitivity field is 0, it means that the receiving power threshold when the first AMP device receives the WPT signal is -20dBm. When the receiving power of the WPT signal is less than the threshold, the WPT signal cannot stimulate the first AMP device, or the first AMP device cannot detect the WPT signal. For another example, the relationship between the value and meaning of this field can be as follows: 0 represents 0.01mW, 1 represents 0.001mW, 2 represents 0.000031mW, and 3 represents 1e-9mW. The receiver sensitivity values ​​listed here are only examples and should not be understood as limiting the embodiments of the present application.

[0256] As shown in FIG5a above, the first AMP device may also report the WPT status during the WPT reporting phase, so the receiver sensitivity field may not appear, such as indicating through the WPT report whether the second AMP device increases the transmission power of the WPT signal.

[0257] In this embodiment of the present application, if the receive power sensitivity of the first AMP device does not match the transmit power of the second AMP device, for example, if the second AMP device transmits the WPT signal at a certain transmit power and then, after signal attenuation, the received power of the WPT signal upon reaching the first AMP device is less than the receive power sensitivity of the first AMP device, the first AMP device will be unable to detect the WPT signal and, therefore, will be unable to provide RF energy to the first AMP device. Generally speaking, the higher the receive power sensitivity of the first AMP device, the greater the transmit power required by the second AMP device.

[0258] (5A) The type of the first AMP device can be used to indicate whether the type of the first AMP device is type A, type B, or type C. For example, the type of the first AMP device can be carried in the AMP STA type field. For example, the AMP STA type field can occupy 2 bits. For example, the relationship between the value and meaning of this field can be as follows: 0 represents type A, which is compatible with traditional Wi-Fi devices; 1 represents type B, which is a low-power device that is not compatible with traditional Wi-Fi devices (such as Wi-Fi devices that support 802.11b / g / n protocols); 2 represents type C that supports back reflection, and 3 represents a reserved value.

[0259] In embodiments of the present application, different types of devices may correspond to different receiver sensitivities, or different types of devices may indicate the energy storage capacity of the device's battery. For example, the first capability indication information may include either the aforementioned receiver sensitivity field or the AMP STA type field. Of course, the first capability indication information may also include both fields.

[0260] Figure 8a is a schematic diagram of the format of another first capability indication information provided in an embodiment of the present application. For the description of each field in Figure 8a, please refer to (1A) to (5A) above, which will not be described in detail here. Similarly, the first capability indication information can also be carried in an element as shown in Figure 7b, or in a frame as shown in Figure 7c, which will not be shown here one by one.

[0261] Furthermore, the first capability indication information may also include at least one of the following: an antenna type of the first AMP device or an antenna polarization mode of the first AMP device.

[0262] (6A) The antenna type of the first AMP device can be used to indicate the antenna type used by the first AMP device to receive WPT signals. For example, the antenna type of the first AMP device can be carried in the WPT antenna type field. For example, the WPT antenna type field can occupy 2 bits. The relationship between the value and meaning of the field can be as follows: 0 represents an omnidirectional antenna, 1 represents a directional antenna, 2 represents a smart antenna, and if the smart antenna can support both omnidirectional and directional antennas, 3 is a reserved value. For another example, when the antenna capability of the first AMP STA is weak, there is no support for smart antennas. At this time, the relationship between the value and meaning of the WPT antenna type field can be as follows: 0 represents an omnidirectional antenna, 1 represents a directional antenna, and 2 to 3 are reserved values.

[0263] In the embodiment of the present application, different antenna types require different powers when sending the same signal, so the first AMP device can send its antenna type and use the antenna type as a reference for capability information.

[0264] (7A) The antenna polarization mode of the first AMP device can be used to indicate the antenna polarization mode used by the first AMP device to receive WPT signals. For example, the antenna polarization of the first AMP device can be carried in the WPT antenna polarization field. For example, the WPT antenna polarization field can occupy 2 bits. For example, the relationship between the value and meaning of this field can be as follows: 0 indicates linear polarization, 1 indicates circular polarization, 2 indicates both are supported, and 3 is a reserved value.

[0265] In this embodiment, if the antenna type of the first AMP device does not match the antenna type of the second AMP device, for example, if the antenna type of the first AMP device is circularly polarized and the antenna type of the second AMP device is linearly polarized, this will result in low WPT signal transmission efficiency. Therefore, using interactive antenna polarization can improve the transmission efficiency of WPT signals.

[0266] Figure 8b is a schematic diagram of the format of another first capability indication information provided in an embodiment of the present application. For the description of each field in Figure 8b, please refer to (1A) to (7A) above, and will not be described in detail here. Similarly, the first capability indication information can also be carried in an element as shown in Figure 7b, or in a frame as shown in Figure 7c, which will not be shown here one by one.

[0267] In a possible implementation, the method shown in FIG6 may further include step 602:

[0268] 602. The third AMP device sends second capability indication information to the first AMP device. Correspondingly, the first AMP device receives the second capability indication information.

[0269] For the parameter format indicated by the second capability indication information, please refer to the above description of the parameter format indicated by the first capability indication information, which will not be described in detail here.

[0270] The following describes the parameter content indicated by the second capability indication information.

[0271] The second capability indication information may include at least one of the following: a frequency band supported by the second AMP device, a bandwidth supported by the second AMP device, or a WPT waveform supported by the second AMP device.

[0272] (1B) The frequency band supported by the second AMP device can be used to indicate the frequency band of the WPT signal transmitted by the second AMP device. Alternatively, the second AMP device can support the transmission of WPT signals in which frequency band, or indicate the frequency band of the WPT signal. For example, the frequency band supported by the second AMP device can be carried in the WPT frequency support field. For a description of this field, please refer to (1A) above and will not be shown here.

[0273] (2B) The bandwidth supported by the second AMP device can be used to indicate the bandwidth of the channel on which the WPT signal transmitted by the second AMP device resides, or the channel bandwidth of the WPT signal. For a description of the bandwidth supported by the second AMP device, please refer to (2A) above and will not be detailed here.

[0274] (3B) The WPT waveform supported by the second AMP device can be used to indicate the modulation mode of the WPT signal sent by the second AMP device. For the description of the WPT waveform supported by the second AMP device, please refer to (3A) above and will not be shown here one by one.

[0275] Figure 9a is a format diagram of a second capability indication information provided by an embodiment of the present application. Figure 9b is a format diagram of a second capability element provided by an embodiment of the present application. Figure 9c is a format diagram of a second capability frame provided by an embodiment of the present application. For example, the second capability frame may be a beacon frame, a probe response frame, or an association response frame. The second capability element may also include an existence field. For an explanation of the existence field, please refer to the description of Figures 7a to 7c, which will not be described in detail here. For an explanation of Figures 9a to 9c, please refer to Figures 7a to 7c, or the above-mentioned (1B) to (3B), which will not be described in detail here.

[0276] Furthermore, the second capability indication information may further include at least one of the following: whether the effective / equivalent isotropic radiated power (EIRP) of the second AMP device is adjustable or the EIRP of the second AMP device.

[0277] (4B) Whether the EIRP of the second AMP device is adjustable can be used to indicate whether the transmit power of the second AMP device is adjustable. Whether the EIRP of the second AMP device is adjustable can be carried in the WPT EIRP adjustable field. For example, the WPT EIRP variable field can occupy 1 bit. The relationship between the value and meaning of this field can be as follows: 0 indicates that adjustment is not supported, and 1 indicates that adjustment is supported.

[0278] In an embodiment of the present application, when the EIRP of the second AMP device is adjustable, the second AMP device, upon learning the type or receiving power sensitivity of the first AMP device, can adjust the transmission power of the WPT signal in combination with the receiving capability of the first AMP device, thereby ensuring that the first AMP device can detect the WPT signal and enabling the first AMP device to complete RF energy collection. When the EIRP of the second AMP device is not adjustable, the second AMP device needs to transmit the WPT signal at a fixed transmission power. Therefore, whether the first AMP device can detect the WPT signal needs to be determined in combination with the receiving power sensitivity of the first AMP device and the transmission power of the second AMP device. The description of (4B) can also refer to the above (4A), which will not be shown here one by one.

[0279] (5B) The EIRP of the second AMP device can be used to indicate the transmit power (Txpower) or receive power of the second AMP device. The EIRP of the second AMP device can be carried in the WPT EIRP field.

[0280] As an example, when the EIRP of the second AMP device is not adjustable, the WPT EIRP field can be used to indicate the fixed transmit power of the second AMP device. As another example, when the EIRP of the second AMP device is adjustable, the WPT EIRP field can be used to indicate the maximum transmit power of the second AMP device. As yet another example, when the EIRP of the second AMP device is adjustable, the WPT EIRP field can be used to indicate the minimum receive power of the second AMP device. If a WPT signal is transmitted at the minimum transmit power and still exceeds the maximum receive power of the first AMP device when it reaches the first AMP device, the first AMP device may not initiate a WPT establishment request.

[0281] For example, the WPT EIRP field can occupy 2 bits. The relationship between the value and meaning of this field can be as follows: 0 represents 1W, 1 represents 2W, 2 represents 3W, and 3 represents 4W. For another example, the relationship between the value and meaning of this field can be as follows: 0 represents 0.2W, 1 represents 0.4W, 2 represents 0.6W, and 3 represents 0.8W.

[0282] For the description of (5B), please refer to (5A) or (4A), which will not be shown here one by one.

[0283] Figure 10a is a schematic diagram of the format of another type of second capability indication information provided in an embodiment of the present application. For descriptions of the various fields in Figure 10a, please refer to (1B) to (5B) above and will not be described in detail here. Similarly, the second capability indication information may also be carried in an element as shown in Figure 9b, or in a frame as shown in Figure 9c, which will not be shown here one by one.

[0284] Furthermore, the second capability indication information may include at least one of the following: an antenna type of the second AMP device or an antenna polarization mode of the second AMP device.

[0285] (6B) The antenna type of the second AMP device can be used to indicate the antenna type used by the second AMP device to transmit WPT signals. For example, the antenna type of the second AMP device can be carried in the WPT antenna type field. For a description of this field, please refer to (6A) above and will not be shown here.

[0286] (7B) The antenna polarization mode of the second AMP device can be used to indicate the antenna polarization mode used by the second AMP device to transmit WPT signals. For example, the antenna polarization mode of the second AMP device can be carried in the WPT antenna polarization field. For a description of this field, please refer to (7A) above and will not be shown here.

[0287] Figure 10b is a schematic diagram of the format of another second capability indication information provided by an embodiment of the present application. For the description of each field in Figure 10b, please refer to (1B) to (7B) above, etc., and will not be described in detail here.

[0288] Furthermore, the second capability indication information may include at least one of the following: the antenna horizontal angle of the second AMP device, the antenna downtilt angle of the second AMP device, whether the beam pattern of the second AMP device is adjustable, the beam pattern width of the second AMP device, or the beam pattern height of the second AMP device.

[0289] (8B) The antenna horizontal angle of the second AMP device can be used to indicate the horizontal angle of the antenna (e.g., a WPT antenna) used by the second AMP device to transmit the WPT signal. For example, the antenna horizontal angle of the second AMP device can be carried in the WPT antenna horizontal angle (WPT antenna azimuth) field. For example, the WPT antenna horizontal angle field can occupy 6 bits. For example, the relationship between the value and meaning of this field can be as follows: 0 represents 10°; 1 represents 20°; ...; 35 represents 360°; 36 to 63 are reserved. In a specific implementation, the actual antenna horizontal angle can be quantized to the above values, and the quantization method can be rounding down, rounding up, or rounding up. For example, if the actual antenna angle is 21°, it can be quantized to 20° using rounding up, and the WPT antenna horizontal angle field can be represented by 1. For another example, the WPT antenna horizontal angle field can occupy 9 bits. For example, the relationship between the value and meaning of this field can be as follows: 0 represents 0°; 1 represents 1°; ...; 359 represents 359°; 360 to 511 are reserved values. The division method here is only an example and should not be understood as a limitation to the embodiments of the present application.

[0290] In this embodiment of the present application, the second AMP device indicates the antenna orientation, antenna downtilt angle, antenna beam width, or antenna beam height to the first AMP device, allowing the first AMP device to determine the antenna's radiation range based on this information. This allows the first AMP device to determine whether it is within the second AMP device's radiation range. If it is not within the radiation range, transmission efficiency will be very low, and the first AMP device may not initiate a WPT establishment request. For a description of the antenna downtilt angle, antenna beam width, and antenna beam height, please refer to the following.

[0291] (9B) The antenna downtilt angle of the second AMP device can be used to indicate the downtilt angle of the antenna used by the second AMP device to send the WPT signal. Exemplarily, the downtilt angle range of the antenna can be -90° to 90°. For example, the antenna downtilt angle of the second AMP device can be carried in the WPT antenna downtilt angle (WPT antenna elevation) field. For example, this field can occupy 5 bits. For example, the relationship between the value and meaning of this field can be as follows: 0 represents -90°; 1 represents -80°; ...; 17 represents 80°; 18 represents 90°; 19 to 31 are reserved values. For another example, this field can occupy 8 bits. For example, the relationship between the value and meaning of this field can be as follows: 0 represents -90°; 1 represents -89°; ...; 180 represents 90°; 181 to 255 are reserved values. The division method here is only an example and should not be understood as a limitation on the embodiments of the present application.

[0292] (10B) Whether the beam pattern of the second AMP device is adjustable is used to indicate whether the antenna used by the second AMP device supports changeability. If the antenna type is a directional antenna, the beam pattern of the second AMP device can be used to indicate whether the antenna supports changeability. If the above-mentioned WPT antenna type field indicates that the antenna type of the second AMP device is a directional antenna, the beam pattern of the second AMP device may appear, or may have a specific meaning. For example, the beam pattern of the second AMP device may be carried in the WPT beam pattern changeable field. For example, this field may occupy 1 bit. The relationship between the value and meaning of this field can be as follows: in the directional antenna scenario, 0 indicates that changeability is not supported, and 1 indicates that changeability is supported. If the above-mentioned WPT antenna type field indicates that the antenna type of the second AMP device is an omnidirectional antenna, this field is a reserved field.

[0293] (11B) The beam pattern width of the second AMP device can be used to indicate the width of the antenna beam used by the second AMP device. If the antenna type is a directional antenna, the beam pattern width of the second AMP device can be used to indicate the width of the WPT antenna beam. For example, the beam pattern width of the second AMP device can be carried in the WPT beam pattern width (WPT beam pattern width) field. For example, this field can occupy 4 bits. The relationship between the value and meaning of this field can be as follows: 0 represents 10°, 1 represents 20°, ..., 15 represents 160°. For example, this field can occupy 8 bits. For example, 0 to 159 represent 1° to 160° respectively, and 160 to 255 are reserved values. If the antenna type is an omnidirectional antenna, this field is a reserved field. The division method here is only an example and should not be understood as a limitation on the embodiments of the present application.

[0294] In an embodiment of the present application, if the number of first AMP devices that need to be charged is small, the second AMP device can use a narrow beam to send the WPT signal. If the number of first AMP devices that need to be charged is large, the second AMP device can use a wide beam to send the WPT signal. Thus, the first AMP device can be covered reasonably and effectively. (12B) The beam pattern height of the second AMP device can be used to indicate the height of the antenna beam used by the second AMP device, such as the height of the WPT antenna beam when the antenna type is a directional antenna. For example, the beam pattern height of the second AMP device can be carried in the WPT beam pattern height (WPT beam pattern height) field. The design of this field can be the same as the WPT beam pattern width, and will not be shown here one by one.

[0295] Figure 10c is a schematic diagram of the format of another second capability indication information provided by an embodiment of the present application. For the description of each field in Figure 10c, please refer to (1B) to (12B) above, etc., and will not be described in detail here.

[0296] The embodiment of the present application does not limit the order of step 601 and step 602.

[0297] Optionally, after the capability interaction, the first AMP device initiates a WPT establishment process, as shown in step 603 of FIG6 .

[0298] As a possible implementation, the first AMP device may initiate a WPT establishment process after sending the first capability indication information. After receiving the first capability indication information, the second AMP device may determine whether to respond to the WPT establishment process based on its own capabilities.

[0299] As another possible implementation, after receiving the second capability indication information, the first AMP device may initiate a WPT establishment process. For example, the first AMP device may determine whether the second AMP device can provide RF energy to the first AMP device based on the capability information of the second AMP device.

[0300] As another possible implementation manner, the first AMP device may initiate a WPT establishment process after sending the first capability indication information and receiving the second capability indication information.

[0301] When the first capability indication information matches the second capability indication information, the first AMP device may initiate a WPT establishment process. The matching shown in the embodiment of the present application refers to the matching of corresponding information, such as whether (1A) and (1B) match, whether (2A) and (2B) match, whether (3A) and (3B) match, whether (4A) (or (5A)) and (5B) match, whether (6A) and (6B) match, and whether (7A) and (7B) match.

[0302] If (1A) and (3A) in the first capability indication information match (1B) and (3B) in the second capability indication information, the first AMP device can initiate the WPT establishment process. Therefore, the first AMP device can improve the success rate of the WPT establishment process by initiating the WPT establishment process after judging its own capabilities and the capabilities of the second AMP device. If the first capability indication information does not match the second capability indication information, the first AMP device does not initiate the WPT establishment process and can continue to wait for the access of the next second AMP device. For example, the first AMP device can determine whether it is within the effective radiation range of the second AMP device, such as combining the above (8B) to (12B) to determine whether it is within the effective radiation range. If it is within the effective radiation range, the first AMP device can initiate the WPT establishment process, thereby achieving ranging or positioning of the second AMP device.

[0303] As an example, when (1A), (3A) in the first capability indication information does not match at least one of (1B), (3B) in the second capability indication information, the first AMP device may not initiate a WPT establishment request, or the first AMP device initiates a WPT establishment request, but the third AMP device refuses to establish the WPT process.

[0304] As another example, when (1A) to (3A) in the first capability indication information matches (1B) to (3B) in the second capability indication information, the first AMP device can send a WPT establishment request, and the third AMP device can determine whether a WPT link can be successfully established based on (4A) to (5A) in the first capability indication information and (4B) to (5B) in the second capability indication information. For example, when the minimum receive power of (4A) in the first AMP device is high or (5A) in the first AMP device is a Type C AMP STA, and the maximum transmit power of (5B) in the third AMP device is low, if the first AMP device and the third AMP device are far apart, the third AMP device rejects the establishment of the WPT link. If the first AMP device and the third AMP device are close, the third AMP device accepts the establishment of the WPT link.

[0305] As another example, when (1A) to (5A) in the first capability indication information and (1B) to (5B) in the second capability indication information all meet the conditions for the first AMP device to send a WPT establishment request, the first AMP device sends a WPT establishment request, and the third AMP device can switch its own type and polarization mode according to (6A) to (7A) in the first capability indication information. For example, if the AMP STA only supports circular polarization, and the AP can support circular polarization and linear polarization, then in the subsequent WPT process, the AP can choose circular polarization to transmit the WPT signal. In other words, the third AMP device can be combined with (6B) to (7B) in the second capability indication information to adapt it to the first AMP device. Otherwise, the third AMP device can refuse to establish the WPT link.

[0306] As another example, when the first AMP device determines that it is not within the effective radiation range of the second AMP device based on (8B) to (12B) in the second capability indication information, the first AMP device may not send a WPT establishment request. Of course, because the first AMP device needs to determine whether it is within the effective radiation range of the second AMP device, the first AMP device needs to have strong computing capabilities (such as ranging). If the first AMP device does not have this capability (for example, Type A AMP STAs may have this capability, while Type B and Type C AMP STAs may not have this capability), the first AMP device may not determine whether it is within the effective radiation range of the second AMP device, and may directly send a WPT establishment request.

[0307] The description of the WPT establishment process can be found below and will not be described in detail here.

[0308] In an embodiment of the present application, the first AMP device indicates its own capability information to the second AMP device, so that the second AMP device can effectively combine the capability information of the first AMP device to determine whether to respond to the WPT establishment process, which not only improves the interaction process in the AMP field, but also improves the efficiency of the interaction.

[0309] The following introduces five new types of frames involved in the embodiments of this application.

[0310] The WPT establishment phase, WPT reporting phase, and WPT removal phase shown in the above-mentioned wireless energy transmission specific process involve five new types of frames, namely WPT establishment request, WPT establishment response, WPT reporting request, WPT report, and WPT removal.

[0311] In order to be compatible with the existing Wi-Fi protocol, the five new frames defined in the embodiments of the present application can be extended through the action frame of the existing Wi-Fi protocol. Figure 11a shows the action field format of the existing Wi-Fi protocol action frame, including a category field and an action details field, where the category field is used to indicate the category or type of the action frame, and the action details field is used to indicate the specific action name. Table 1 gives the specific definition of the action frame category field in the existing Wi-Fi protocol, where 0 to 127 are allocated and 128 to 255 are not allocated.

[0312] Table 1 Definition of action frame category fields in the Wi-Fi protocol

[0313] According to Table 1, the embodiment of the present application can select a value from 128 to 255, for example, 128, as the WPT category frame identifier of the embodiment of the present application, which is used to indicate the WPT action frame, as shown in Table 2. The specific value of the WPT category field is not limited by the embodiment of the present application.

[0314] Table 2 WPT action frame category field values

[0315] The embodiment of the present application defines a specific action field, which can also be referred to as a WPT action field, to distinguish the five new types of frames defined above, as shown in Figure 11b. In Table 3, the WPT action field is represented by 8 bits. When its value is 0, it indicates a WPT establishment request, 1 indicates a WPT establishment response, 2 indicates a WPT report request, 3 indicates a WPT report, 4 indicates a WPT removal, and the remaining values ​​are reserved values. The above is only an example. The embodiment of the present application does not limit the specific number of bits used to represent the WPT action field and the order in which the WPT action field is defined. In addition, in a specific implementation, according to the needs of the actual scenario, the embodiment of the present application can also define some new messages. For example, the embodiment of the present application only uses 2 bits to represent the WPT action field, where 0 indicates a WPT establishment request, 1 indicates a WPT establishment response, 2 indicates a WPT report, and 3 indicates a WPT removal.

[0316] Table 3 WPT action field definition

[0317] The following introduces the WPT establishment request and WPT establishment response involved in the embodiments of the present application.

[0318] 1) WPT establishment request

[0319] The WPT setup request includes at least one of the following fields: a category field, a WPT action field, a WPT setup parameter field, and a WPT status control field. The category field indicates that the WPT setup request is WPT category information, the WPT action field indicates that the current action type is a WPT setup request, the WPT setup parameter field indicates parameters used to establish the WPT link, and the WPT status control field indicates whether, during the reporting phase, the first AMP device will report the DC voltage at the output of the rectifier, the energy storage device voltage, the received power, or the temperature.

[0320] Exemplarily, according to Table 2 and Table 3 above, in the WPT establishment request, the category field may take a value of 128, and the WPT action field may take a value of 0.

[0321] The WPT Establishment Parameters field may include at least one of the following fields: a WPT Frequency Range field, a WPT Modulation field, and a WPT Duration field. The WPT Frequency Range field indicates the frequency range used by the WPT process, the WPT Modulation field indicates the modulation scheme used by the WPT process, and the WPT Duration field indicates the duration of the WPT process. As shown in Figure 12a, the WPT Frequency Range field can be represented using two bytes, with the first byte indicating the operating class and the second byte indicating the channel number. For example, an operating class value of 12 and a channel number of 1 indicate that the WPT process uses a frequency range with a center frequency of 2412 MHz and a bandwidth of 20 MHz. An operating class value of 12 and a channel number of 2 indicate that the WPT process uses a frequency range with a center frequency of 2417 MHz and a bandwidth of 20 MHz. The WPT Frequency field can also be represented using three bytes, with the first two bytes indicating the starting frequency and the third byte indicating the bandwidth. For example, a starting frequency value of 2417 and a bandwidth value of 20 indicate that the WPT process uses a frequency range with a starting frequency of 2417 MHz and a bandwidth of 20 MHz. The WPT modulation field can use 3 bits in 1 byte to correspond to 3 different modulation modes, and the remaining bits are reserved. The corresponding bit of the selected modulation mode is set to 1, and the remaining bits are set to 0, indicating the modulation mode used in the WPT process. For example, the 3 bits in 1 byte correspond to FMCW, DSSS, and FHSS modulation modes respectively. The value of "010" indicates that the WPT process uses the DSSS modulation mode. The WPT duration field can use different values ​​of 1 byte to represent different durations, for example, 0 represents 0 seconds, 1 represents 1 second, ..., 255 represents 255 seconds; or 0 represents 0 milliseconds, 1 represents 2 milliseconds, ..., 255 represents 510 milliseconds. The above is only an example. The embodiment of the present application does not limit the order of the above fields, the byte length of each field, the value range, the value unit, etc.

[0322] The WPT status control field can be represented by 8 bits, as shown in Figure 12b. In Figure 12b, the WPT status control field is represented by 8 bits, of which 4 bits indicate whether the first AMP device will report the following 4 parameters: the DC voltage output by the rectifier, the voltage of the energy storage, the amount of power received, and the temperature. Each bit corresponds to a parameter. When its value is 0, it means that the parameter is not reported, and 1 means that the parameter is reported. The WPT status control field can also be represented by 1 bit, 0 means reporting the above 4 parameters, and 1 means not reporting. The above is only an example. The embodiments of the present application do not limit the number of parameters of the WPT status, the order of parameters, and the specific parameters. There is no limitation on the number of bits representing the WPT status control field and whether it corresponds one-to-one with the parameters.

[0323] 2)WPT establishes response

[0324] The WPT setup response includes at least one of the following fields: a category field, a WPT action field, a status code field, a WPT setup parameter field, and a WPT status control field. The category field indicates that the WPT setup response is WPT category information, and the WPT action field indicates that the current action type is WPT setup response. The status code field indicates whether the WPT link establishment is successful. The WPT status control field indicates whether the first AMP device reports the DC voltage output by the rectifier, the voltage of the energy storage device, the received power, or the temperature during the reporting phase.

[0325] Exemplarily, according to Table 2 and Table 3 above, in the WPT establishment response, the category field may take a value of 128, and the WPT action field may take a value of 1.

[0326] The coded status field can be extended using the status code field in existing Wi-Fi protocols. In existing Wi-Fi protocols, the status code field indicates whether a request was successful. Table 4 defines the status code field in existing Wi-Fi protocols, where values ​​0 to 129 are assigned and values ​​130 to 65535 are reserved.

[0327] Table 4 Definition of the encoding status field in the Wi-Fi protocol

[0328] In this embodiment of the present application, a Status Code field value of 0 can be used to indicate a successful WPT link establishment. A newly defined value of 130 indicates a successful WPT link establishment, and the WPT Setup Response carries the WPT Status Control field. A newly defined value of 131 indicates a failed WPT link establishment, as shown in Table 5. In this embodiment of the present application, a Status Code field value of 0 can also be used to indicate a successful WPT link establishment, and a newly defined value of 130 to indicate a failed WPT link establishment, as shown in Table 6. The above is merely an example; this embodiment of the present application does not limit the format of the Status Code field; it only needs to indicate whether the WPT link establishment is successful.

[0329] Table 5 Example 1 of the definition of the coded status field in the WPT establishment response

[0330] Table 6 Example 2 of the definition of the coded status field in the WPT establishment response

[0331] The format of the WPT establishment parameter field may be consistent with the WPT establishment parameter field in the WPT establishment request, as shown in FIG12 a.

[0332] The format of the WPT Status Control field in the WPT Setup Response can be consistent with the WPT Status Control field in the WPT Setup Request, with the required parameters being a subset, as shown in Figure 13. For example, in Figure 13, the WPT Setup Request uses four bits to represent the WPT Status Control field, with each bit corresponding to a parameter, 1 indicating reporting and 0 indicating non-reporting. The four-bit value of the WPT Status Control field in the WPT Setup Request is "1110," indicating that the first AMP device will report the DC voltage output by the rectifier, the voltage of the energy storage device, and the amount of power received. The WPT Setup Response also uses four bits to represent the WPT Status Control field, with the value being "1100," a subset of the "1110" value in the WPT Status Control field in the WPT Setup Request, indicating that the first AMP device is required to report the DC voltage output by the rectifier and the voltage of the energy storage device. This is merely an example, and the specific format of the WPT Status Control field is not limited.

[0333] If the WPT link fails to be established, it means that the second AMP device cannot provide wireless energy to the first AMP device. If the WPT link is successfully established, it means that the second AMP device provides wireless energy to the first AMP device and enters the WPT process.

[0334] The following introduces the WPT report request and WPT report involved in the embodiments of the present application.

[0335] 3) WPT report request

[0336] The WPT report request includes at least one of the following fields: a category field, a WPT action field, and a WPT status control field. The category field indicates that the WPT report request category is WPT category information; the WPT action field indicates that the current action type is a WPT report request; and the WPT status control field indicates whether the first AMP device should report the DC voltage output by the rectifier, the voltage of the energy storage device, the received power, or the temperature during the reporting phase.

[0337] For example, according to Table 2 and Table 3 above, in the WPT report request, the category field may take a value of 128, and the WPT action field may take a value of 2.

[0338] The format of the WPT Status Control field can be consistent with the WPT Status Control field in the WPT Setup Request, and the parameters required to be reported are a subset thereof, as shown in Figure 13. For example, in Figure 13, the WPT Setup Request uses 4 bits to represent the WPT Status Control field, with each bit corresponding to a parameter, 1 indicating reporting and 0 indicating non-reporting. The 4-bit value of the WPT Status Control field in the WPT Setup Request is "1110," indicating that the first AMP device will report the DC voltage output by the rectifier, the voltage of the energy storage device, and the amount of power received. The WPT Report Request also uses 4 bits to represent the WPT Status Control field, with a value of "1000," which is a subset of the WPT Status Control field "1110" in the WPT Setup Request, indicating that the first AMP device is required to report the DC voltage output by the rectifier. The above is merely an example, and the embodiments of the present application do not limit the specific format of the WPT Status Control field.

[0339] 4) WPT Report

[0340] The WPT report includes at least one of the following fields: a category field, a WPT action field, a WPT energy control field, a WPT status control field, and WPT status information. The category field indicates the WPT category is WPT category information, and the WPT action field indicates the current action type is WPT reporting. The WPT energy control field indicates the WPT energy control information reported by the first AMP device. The WPT energy control information includes at least one of the following: the urgency of the energy control information, the received power status, whether the voltage is too high, whether the current is too high, whether the temperature is too high, and whether a self-protection mechanism is present. The WPT status control field indicates whether the first AMP device will report the DC voltage output by the rectifier, the voltage of the energy storage device, the received power, or the temperature during the reporting phase. The WPT status information indicates the WPT status information reported by the first AMP device. The WPT status information includes at least one of the following: the DC voltage output by the rectifier, the voltage of the energy storage device, the received power, and the temperature. The WPT status control information indicates the information reported by the WPT status information.

[0341] For example, according to Table 2 and Table 3 above, in the WPT report, the category field may take a value of 128, and the WPT action field may take a value of 3.

[0342] Exemplarily, the WPT energy control field may be represented using 8 bits, as shown in FIG14 a . In FIG14 a , the urgency of the energy control information can be represented by one bit, where 0 indicates no urgency and 1 indicates no urgency. The received power status can be represented by three bits, where 0 indicates that the received power does not reach the minimum receive power threshold of the first AMP device, 1 indicates that the received power is between the minimum and maximum receive power thresholds, 2 indicates that the received power reaches the maximum receive power threshold, 3 indicates that the received power exceeds a first threshold of the maximum power, such as 10% or 20%, 4 indicates that the received power exceeds a second threshold of the maximum power, such as 30% or 50%, 5 indicates that a WPT alarm has occurred, and 6 indicates that the WPT signal is no longer needed, such as if the first AMP device is fully charged. The remaining values ​​are retained. Whether the voltage is too high can be represented by one bit, where 0 indicates that the voltage threshold is not exceeded and 1 indicates that the voltage threshold is exceeded. Whether the current is too high can be represented by one bit, where 0 indicates that the current threshold is not exceeded and 1 indicates that the current threshold is exceeded. Whether the temperature is too high can be represented by one bit, where 0 indicates that the temperature threshold is not exceeded and 1 indicates that the temperature threshold is exceeded. Whether a self-protection mechanism is present can be represented by one bit, where 0 indicates that the self-protection mechanism is not present and 1 indicates that the self-protection mechanism is present. The above is only an example. The embodiments of the present application do not limit the number of parameters included in the WPT energy control field, the order between the parameters, and the specific parameters.

[0343] The format of the WPT status control field may be consistent with the WPT status control field in the WPT establishment request, as shown in FIG12b .

[0344] The WPT status information is specific WPT status information indicated by the WPT status control field. For example, as shown in FIG14b , the DC voltage output by the rectifier can be represented using 8 bits, where 0 represents 0mV, 1 represents 1mV, 2 represents 2mV, ..., 255 represents 255mV. The DC voltage output by the rectifier can also be represented using another method, still using 8 bits, where 0 represents 0mV, 1 represents 2mV, 2 represents 4mV, ..., 255 represents 510mV. The voltage of the energy storage device can be represented using 8 bits, where 0 represents 0mV, 1 represents 1mV, 2 represents 2mV, ..., 255 represents 255mV. The voltage of the energy storage device can also be represented using another method, where 0 represents 3mV, 1 represents 3mV, 2 represents 6mV, ..., 255 represents 765mV. The received power can be represented by 8 bits, where 0 represents 0mW, 1 represents 1mW, 2 represents 2mW, ..., 255 represents 255mW; the received power can also be represented by another method, still using 8 bits, where 0 represents 0mW, 1 represents 4mW, 2 represents 8mW, ..., 255 represents 1020mW. The temperature can be represented by 8 bits, where 0 represents -20°, 1 represents -19°, 2 represents -18°, ..., 50 represents 30°, and the remaining values ​​are reserved; the temperature can also be represented by another method, where 0 represents -30°, 1 represents -29°, 2 represents -28°, ..., 90 represents 60°, and the remaining values ​​are reserved. The above parameter representation is only an example, and the embodiments of the present application do not limit the number of parameters, the order of parameters, and the specific representation of parameters.

[0345] When the first AMP device detects a WPT alarm or no longer requires a WPT signal, it sets the Received Power Status field in the WPT Energy Control field of the WPT Report to 5 or 6, indicating a WPT alarm or no longer requires WPT. In a specific implementation, if the first AMP device is unable to receive WPT signals due to damage or the received power significantly exceeds the maximum receive power, the Received Power Status field in the WPT Report may be set to 5 and sent to the third AMP device. If the first AMP device is fully charged or has completed its transmission task and no longer requires a WPT signal, the Received Power Status field in the WPT Report may be set to 6 and sent to the third AMP device.

[0346] The following introduces the WPT removal involved in the embodiments of the present application.

[0347] 5) WPT dismantling

[0348] The WPT removal includes at least one of the following fields: a category field and a WPT action field, wherein the category field indicates that the WPT removal is WPT category information, and the WPT action field indicates that the current action type is WPT removal.

[0349] For example, according to Table 2 and Table 3 above, in WPT dismantling, the category field may take a value of 128, and the WPT action field may take a value of 4.

[0350] In the WPT teardown phase, the first AMP device receives the WPT teardown, indicating that the second AMP device wants to stop the WPT process. The first AMP device sends an ACK to the third AMP device, indicating that it agrees to stop the WPT process.

[0351] In the WPT dismantling phase, the third AMP device receives ACK, indicating that the first AMP device agrees to stop the WPT process, and the third AMP device stops the WPT process.

[0352] The following describes the specific interaction process of the embodiment of the present application, combining the example topology and five new frames given above. The interaction process shown below does not involve the WPT capability interaction phase. For the description of the WPT capability interaction phase, please refer to the above and will not be described in detail here.

[0353] Take Figures 5a to 5d as an example. First, during the WPT establishment phase, the first AMP device sends a WPT establishment request to the third AMP device, requesting the establishment of a WPT link. The third AMP device then sends a WPT establishment response to the first AMP device, indicating whether the WPT link establishment was successful. If the WPT link establishment fails, this indicates that the second AMP device is unable to provide wireless energy transmission to the first AMP device, meaning it cannot provide a WPT signal for RF energy harvesting. If the WPT link establishment is successful, the WPT process begins. For example, the second AMP device can send a WPT signal to the first AMP device, and the first AMP device can then harvest RF energy based on the WPT signal. During the WPT reporting phase, the first AMP device can actively or passively report WPT status information to the third AMP device. For example, the third AMP device can send a WPT report request to the first AMP device, requesting the first AMP device to report WPT status information. The first AMP device then sends a WPT report to report the WPT status information. This is a passive reporting method. Alternatively, the first AMP device can actively send a WPT report to the third AMP device to report WPT status information, particularly when the first AMP device experiences a WPT alarm or no longer requires a WPT signal. Based on the reported WPT status information, when the third AMP device discovers that the first AMP device has a WPT alarm or no longer needs a WPT signal, it can enter the WPT removal phase. During the WPT removal phase, the third AMP device can stop the WPT process implicitly or explicitly. When the WPT report received by the third AMP device indicates that a WPT alarm has occurred or that a WPT signal is no longer needed, the third AMP device can trigger (or control) the second AMP device to directly stop the WPT process. This is the implicit method. The explicit method is that when the third AMP device determines that the first AMP device has a WPT alarm or no longer needs a WPT signal based on the received WPT report, it sends a WPT removal to indicate that the WPT process is to be stopped; the first AMP device feeds back an ACK to indicate that the WPT removal has been successfully received; the third AMP device triggers (or controls) the second AMP device to stop the WPT process, that is, stops sending WPT signals to the first AMP device.

[0354] The above-described wireless energy transmission process is merely an example. In practical implementations, other interaction processes may exist, such as a WPT capability interaction phase. There may also be no explicit WPT reporting phase or WPT removal phase. This is not a limitation of the present embodiments. Any interaction process that can be applied to the above-described phases falls within the scope of protection of the present embodiments.

[0355] According to the topology shown in FIG3b, AMP STA is the first AMP device, AMP AP is the second AMP device, AMP AP can provide wireless energy for AMP STA and perform AMP communication with AMP STA. The specific process of wireless energy transmission is shown in FIG5b.

[0356] As the initiator of WPT establishment, the AMP STA sends a WPT establishment request to the AMP AP to request the establishment of a WPT link.

[0357] The WPT setup request includes at least one of the following fields: a category field, a WPT action field, and a WPT state control field. The category field indicates that the WPT setup request category is WPT category information, the WPT action field indicates that the current action type is a WPT setup request, and the WPT state control field indicates whether the AMP STA will report the DC voltage at the output of the rectifier, the energy storage device voltage, the received power, and the temperature during the reporting phase. For details on the category field setting, see Table 2, the WPT action type field setting, and Figure 12b.

[0358] The AMP AP receives the WPT Establishment Request and sends a WPT Establishment Response back to the AMP STA, indicating whether the WPT link establishment is successful. If the WPT establishment fails, the AMP AP cannot provide wireless energy to the AMP STA. If the WPT establishment succeeds, the WPT process begins. This WPT process involves the AMP AP transmitting WPT signals to the AMP STA.

[0359] The WPT Setup Response includes at least one of the following fields: a Category field, a WPT Action field, a Status Code field, and a WPT Status Control field. The Category field indicates that the WPT Setup Response is WPT Category Information, the WPT Action field indicates that the current action type is WPT Setup Response, the Status Code field indicates whether the WPT link establishment is successful, and the WPT Status Control field indicates whether the AMP STA reports the DC voltage output by the rectifier, the voltage of the energy storage device, the received power, or the temperature during the reporting phase. For details on the Category field, see Table 2; for details on the WPT Action Type field, see Table 3; for details on the Status Code field, see Table 5 or Table 6; and for details on the WPT Status Control field, see Figure 13.

[0360] In the WPT reporting phase, the AMP AP may send a WPT reporting request to the AMP STA, requesting the AMP STA to report WPT status information.

[0361] The WPT Report Request includes at least one of the following fields: a Category field, a WPT Action field, and a WPT Status Control field. The Category field indicates that the WPT Report Request is WPT Category Information; the WPT Action field indicates that the current action type is a WPT Report Request; and the WPT Status Control field indicates whether the AMP STA reports the DC voltage output by the rectifier, the voltage of the energy storage device, the received power, or the temperature during the reporting phase. For details on the Category field, see Table 2; for details on the WPT Action Type field, see Table 3; and for details on the WPT Status Control field, see Figure 13.

[0362] The AMP STA receives the WPT report request and sends a WPT report to the AMP AP to report the WPT status information.

[0363] The WPT report request includes at least one of the following fields: a category field, a WPT action field, a WPT energy control field, a WPT status control field, and WPT status information. The category field indicates the WPT category is WPT category information, and the WPT action field indicates the current action type is WPT reporting. The WPT energy control field indicates the WPT energy control information reported by the AMP STA, which includes at least one of the following: the urgency of the energy control information, the received power status, whether the voltage is too high, whether the current is too high, whether the temperature is too high, and whether a self-protection mechanism is in place. The WPT status control field indicates whether the AMP STA will report the DC voltage output by the rectifier, the voltage of the energy storage device, the received power, or the temperature during the reporting phase. The WPT status information indicates the WPT status information reported by the AMP STA, which includes at least one of the following: the DC voltage output by the rectifier, the voltage of the energy storage device, the received power, and the temperature. The WPT status information indicates the WPT status information reported by the AMP STA, which includes at least one of the following: the DC voltage output by the rectifier, the voltage of the energy storage device, the received power, and the temperature. The WPT status control information indicates the information reported by the WPT status information. For the category field setting, please refer to Table 2; for the WPT action type field setting, please refer to Table 3; for the WPT energy control field setting, please refer to Figure 14a; for the WPT state control field setting, please refer to Figure 13; and for the WPT state information setting, please refer to Figure 14b.

[0364] The above is a passive report by AMP STA. AMP STA can also actively report and send a WPT report to the AMP AP. In particular, when a WPT alarm occurs in the AMP STA or the WPT signal is no longer needed, the received power state in the WPT energy control field in the WPT report is set to 5 or 6, indicating that a WPT alarm occurs or the WPT signal is no longer needed.

[0365] When the AMP AP receives a WPT report indicating that a WPT alarm has occurred in the AMP STA or the WPT signal is no longer needed, the AMP AP stops the WPT process of the AMP STA.

[0366] The above is an implicit WPT removal process. AMP APs can also use an explicit WPT removal process. Based on the received WPT report, the AMP AP determines that the AMP STA no longer requires the WPT signal. For example, if the AMP STA is nearly fully charged or has completed its transmission task, it sends a WPT removal message to the AMP STA, instructing the AMP AP to stop the WPT process.

[0367] The WPT teardown field includes at least one of the following fields: a Category field and a WPT Action field. The Category field indicates that the WPT teardown is WPT category information, and the WPT Action field indicates that the current action type is WPT teardown. For details on the Category field, refer to Table 2; for details on the WPT Action Type field, refer to Table 3.

[0368] The AMP STA receives the WPT teardown message, indicating that the AMP AP wants to stop the WPT process. The AMP STA sends an ACK to the AMP AP, indicating that it agrees to stop the WPT process.

[0369] The AMP AP receives the ACK, indicating that the AMP STA agrees to stop the WPT process, and the AMP AP stops the WPT process.

[0370] According to the topology shown in FIG4 b , the AMP STA is the first AMP device, the AMP AP is the third AMP device, the exciter is the second AMP device, the AMP AP performs AMP communication with the AMP STA, and the exciter provides RF energy to the AMP STA.

[0371] The AMP communication process between the AMP STA and the AMP AP is the same as that shown in Figure 5b, with the difference being the start and stop of the WPT process, as shown in Figure 5d.

[0372] After the AMP AP sends a WPT setup response, indicating a successful WPT link establishment, it sends a WPT control message (control message #1, shown in Figure 5d) to the exciter, instructing the start of the WPT process. The exciter receives the WPT control message and begins providing RF energy to the AMP STA, entering the WPT process.

[0373] When the AMP AP receives a WPT report indicating a WPT alarm or no longer requiring a WPT signal, or receives an ACK indicating that the AMP STA has received an instruction to stop the WPT process, the AMP AP sends a WPT control (control message #2 shown in Figure 5d) to the exciter, instructing it to stop the WPT process. The exciter receives the WPT control and stops providing RF energy to the AMP STA.

[0374] According to the topology shown in Figure 3c, the AMP STA is the first AMP device, the relay node is the second AMP device, and the relay node can not only provide RF energy for the AMP STA but also perform AMP communication with the AMP STA. The specific process of wireless energy transmission is shown in Figure 5b.

[0375] The following will introduce the AMP device provided in the embodiments of the present application.

[0376] The present application divides the functional modules of the AMP device according to the above-mentioned method embodiment. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the present application is schematic and is only a logical functional division. There may be other division methods in actual implementation. The AMP device of the embodiment of the present application will be described in detail below with reference to Figures 15 to 17.

[0377] Figure 15 is a schematic diagram of the structure of an AMP device provided in an embodiment of the present application. As shown in Figure 15, the AMP device includes a processing module 1501 and a transceiver module 1502. The transceiver module 1502 can implement corresponding communication functions, and the processing module 1501 is used to implement corresponding processing functions. For example, the transceiver module 1502 can also be referred to as an interface, a communication interface, or a communication module.

[0378] In some embodiments of the present application, the AMP device can be used to perform the actions performed by the first AMP device in the above method embodiments. In this case, the first AMP device can be the WLAN device itself, or a chip or functional module configurable in the device. The transceiver module 1502 is used to perform the transceiver-related operations of the first AMP device in the above method embodiments, and the processing module 1501 is used to perform the processing-related operations of the first AMP device in the above method embodiments.

[0379] Exemplarily, the processing module 1501 can be used to obtain first capability indication information; the transceiver module 1502 can be used to send or output the first capability indication information through a WLAN link; the processing module 1501 can also be used to initiate a WPT establishment process based on the first capability indication information.

[0380] Exemplarily, the transceiver module 1502 may also be configured to receive or input second capability indication information. The processing module 1501 may also be configured to parse the second capability indication information.

[0381] Exemplarily, the processing module 1501 may also be used to obtain a WPT establishment request; the transceiver module 1502 may also be used to send or output a WPT establishment request through a WLAN link, and receive or input a WPT establishment response.

[0382] Exemplarily, the processing module 1501 may also be used to obtain a WPT report; the transceiver module 1502 may also be used to send or output a WPT link via a WLAN link.

[0383] Exemplarily, the transceiver module 1502 may also be configured to receive or input a WPT report request.

[0384] Exemplarily, the transceiver module 1502 may also be configured to receive or input WPT removal via a WLAN link; and the processing module 1501 may also parse the WPT removal.

[0385] Exemplarily, the processing module 1501 may include a generation module or a parsing module. For example, the generation module may be used to generate the various information shown above, and the parsing module may be used to parse the various information received by the first AMP device. Exemplarily, the transceiver module 1502 may include a radio frequency module, an antenna module, etc. Exemplarily, the transceiver module 1502 may include a pin module, etc.

[0386] Referring to Figure 15 , in some other embodiments of the present application, the AMP device can be used to perform the actions performed by the third AMP device in the above method embodiment. In this case, the AMP device can be the WLAN device itself, or a chip or functional module configurable in the device. Transceiver module 1502 is used to perform the transceiver-related operations of the third AMP device in the above method embodiment, and processing module 1501 is used to perform the processing-related operations of the third AMP device in the above method embodiment.

[0387] Exemplarily, the transceiver module 1502 may be configured to receive or input first capability indication information via a WLAN link; and the processing module 1501 may be configured to respond to a WPT establishment process based on the first capability indication information.

[0388] Illustratively, the transceiver module 1502 may be configured to send or output the second capability indication information via a WLAN link.

[0389] Exemplarily, the transceiver module 1502 may be configured to receive or input a WPT establishment request through a WLAN link, and to send or output a WPT establishment response.

[0390] Exemplarily, the transceiver module 1502 may also be configured to receive or input a WPT report via a WLAN link.

[0391] Exemplarily, the transceiver module 1502 may also be configured to send or output a WPT report request via a WLAN link.

[0392] Exemplarily, the transceiver module 1502 may also be configured to send or output WPT removal via a WLAN link.

[0393] Exemplarily, the processing module 1501 may include a generation module and a parsing module. For example, the generation module may be used to generate the various information shown above, and the parsing module may be used to parse the various information received by the third AMP device. Exemplarily, the transceiver module 1502 may include a radio frequency module, an antenna module, etc. Exemplarily, the transceiver module 1502 may include a pin module, etc.

[0394] Optionally, in each of the above embodiments, the AMP device may further include a storage module, which may be used to store instructions and / or data, and the processing module 1501 may read the instructions and / or data in the storage module so that the AMP device implements the above method embodiments.

[0395] In the above embodiments, for specific descriptions of terms or steps such as the first capability indication information, the second capability indication information, the WLAN link, the WPT link, the first AMP device, the third AMP device, the WPT establishment request, the WPT establishment response, the WPT report request, the WPT report or the WPT dismantling, etc., please refer to the introduction in the above method embodiments and will not be described in detail here.

[0396] The specific descriptions of the transceiver module and the processing module shown in the above embodiments are only examples. For the specific functions or execution steps of the transceiver module and the processing module, please refer to the above method embodiments and will not be described in detail here.

[0397] The above describes the AMP device according to the embodiment of the present application. The following describes possible product forms of the AMP device. Any product that possesses the functions of the AMP device described in FIG. 15 falls within the scope of protection of the embodiment of the present application. The following description is for illustrative purposes only and does not limit the product forms of the AMP device according to the embodiment of the present application to these examples.

[0398] The AMP device shown in the embodiment of the present application can be an AMP device body or a communication module in the AMP device, or a circuit or chip therein (such as a modem chip, also known as a baseband chip, or a system on chip (SoC) chip or system in package (SIP chip) containing a modem core). Exemplarily, when the above-mentioned AMP device is used to perform the action performed by the first AMP device, the AMP device can be all as shown in Figure 1, or a part as shown in Figure 1, such as a Wi-Fi subsystem. For the description of the first AMP device, please refer to Figure 1 and will not be described in detail here.

[0399] In one possible implementation, in the AMP device shown in FIG15 , processing module 1501 may be one or more processors, and transceiver module 1502 may be a transceiver. Alternatively, transceiver module 1502 may be a transmitting module and a receiving module, wherein the transmitting module may be a transmitter and the receiving module may be a receiver, and the transmitting module and the receiving module are integrated into a single device, such as a transceiver. In the embodiments of the present application, the processor and the transceiver may be coupled, and the embodiments of the present application do not limit the connection method between the processor and the transceiver.

[0400] FIG16 is a schematic diagram of the structure of an AMP device provided in an embodiment of the present application. As shown in FIG16 , the AMP device 160 includes one or more processors 1620 and a transceiver 1610 .

[0401] In some embodiments of the present application, the AMP device can be used to execute the steps or methods or functions performed by the above-mentioned first AMP device, such as the processor 1620 can be used to execute the functions or steps implemented by the processing module 1501 shown in Figure 15, and the transceiver 1610 can be used to execute the functions or steps implemented by the transceiver module 1502 shown in Figure 15. For specific descriptions of the processor 1620 and the transceiver 1610, please refer to Figure 15 or the method embodiment shown above, and will not be described in detail here. In conjunction with Figure 1, the processor shown here may include a baseband circuit or a radio frequency circuit in the Wi-Fi subsystem shown in Figure 1. The transceiver may include an antenna in the Wi-Fi subsystem shown in Figure 1.

[0402] In other embodiments of the present application, an AMP device is used to execute the steps, methods, or functions performed by the third AMP device described above. For example, the processor 1620 can be used to execute the functions or steps implemented by the processing module 1501 shown in FIG15 , and the transceiver 1610 can be used to execute the functions or steps implemented by the transceiver module 1502 shown in FIG15 . For detailed descriptions of the processor 1620 and the transceiver 1610, please refer to FIG15 or the method embodiments shown above and will not be described in detail here.

[0403] For example, the processing capability of the processor of the first AMP device may be smaller than that of the processor of the third AMP device. For the description of the processor, please refer to FIG1 and will not be described in detail here.

[0404] In various implementations of the AMP device shown in FIG16 , the transceiver may include a receiver and a transmitter, wherein the receiver is configured to perform a receiving function (or operation) and the transmitter is configured to perform a transmitting function (or operation). The transceiver is configured to communicate with other devices / apparatuses via a transmission medium.

[0405] Optionally, the AMP device 160 may further include one or more memories 1630 for storing program instructions and / or data. The memory 1630 is coupled to the processor 1620. The coupling in the embodiment of the present application is an indirect coupling or communication connection between AMP devices, units or modules, which may be electrical, mechanical or other forms, and is used for information exchange between AMP devices, units or modules. The processor 1620 may operate in conjunction with the memory 1630. The processor 1620 may execute program instructions stored in the memory 1630. Optionally, at least one of the above-mentioned one or more memories may be included in the processor.

[0406] The specific connection medium between the transceiver 1610, processor 1620, and memory 1630 is not limited in the embodiments of the present application. In Figure 16, the memory 1630, processor 1620, and transceiver 1610 are connected via a bus 1640. The bus is represented by a bold line in Figure 16. The connection methods between other components are merely schematic and are not limiting. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, Figure 16 only uses a single bold line, but this does not mean that there is only one bus or only one type of bus.

[0407] In the embodiments of the present application, the memory may include, but is not limited to, non-volatile memories such as a hard disk drive (HDD) or a solid-state drive (SSD), random access memory (RAM), erasable programmable read-only memory (EPROM), read-only memory (ROM), or portable read-only memory (CD-ROM). The memory is any storage medium that can be used to carry or store program code in the form of instructions or data structures and can be read and / or written by a computer (such as the AMP device shown in this application), but is not limited to this. The memory in the embodiments of the present application can also be a circuit or any other device that can realize a storage function, used to store program instructions and / or data.

[0408] Processor 1620 is primarily used to process Wi-Fi protocols and communication data, control the entire AMP device, execute software programs, and process software program data. Memory 1630 is primarily used to store software programs and data. Transceiver 1610 may include control circuitry and an antenna. The control circuitry is primarily used to convert baseband signals into RF signals and process RF signals. The antenna is primarily used to transmit and receive RF signals in the form of electromagnetic waves. Input / output devices, such as touch screens, displays, and keyboards, are primarily used to receive user input and output data to the user.

[0409] The AMP device shown in the embodiment of the present application may also have more components than those in Figure 16, and the embodiment of the present application is not limited to this. The method executed by the processor and transceiver shown above is only an example. For the specific steps executed by the processor and transceiver, please refer to the method described above.

[0410] In another possible implementation, in the AMP device shown in FIG15 , the processing module 1501 may be one or more logic circuits, and the transceiver module 1502 may be an input / output interface, also known as a communication interface, or an interface circuit, or an interface, etc. Alternatively, the transceiver module 1502 may be a transmitting module and a receiving module, where the transmitting module may be an output interface and the receiving module may be an input interface, with the transmitting module and the receiving module integrated into a single module, such as an input / output interface. As shown in FIG17 , the AMP device shown in FIG17 includes a logic circuit 1701 and an interface 1702. That is, the processing module 1501 may be implemented using a logic circuit 1701, and the transceiver module 1502 may be implemented using an interface 1702. The logic circuit 1701 may be a chip, a processing circuit, an integrated circuit, or a system-on-chip (SoC) chip, etc., and the interface 1702 may be a communication interface, an input / output interface, a pin, etc. For example, FIG17 uses the AMP device as a chip as an example, and the chip includes a logic circuit 1701 and an interface 1702.

[0411] In the embodiment of the present application, the logic circuit and the interface can also be coupled to each other. The embodiment of the present application does not limit the specific connection method of the logic circuit and the interface. For example, the logic circuit 1701 can be used to perform the functions or steps implemented by the processing module 1501 shown in Figure 15, and the interface 1702 can be used to perform the functions or steps implemented by the transceiver module 1502 shown in Figure 15. For a specific description of the logic circuit 1701 and the interface 1702, please refer to Figure 15 or the method embodiment shown above, and will not be described in detail here.

[0412] The AMP device shown in the embodiment of the present application can implement the method provided in the embodiment of the present application in the form of hardware, or can implement the method provided in the embodiment of the present application in the form of software, etc., and the embodiment of the present application is not limited to this.

[0413] The embodiment of the present application further provides a communication system, which includes a first AMP device and a third AMP device, and the first AMP device and the third AMP device can be used to perform the method in any of the above embodiments. Optionally, the communication system can also include a second AMP device.

[0414] In addition, the present application also provides a computer program, which is used to implement the operations and / or processing performed by each AMP device in the method provided by the present application.

[0415] The present application also provides a computer-readable storage medium having computer code stored therein. When the computer code runs on a computer, the computer executes the operations and / or processing performed by each AMP device in the method provided by the present application.

[0416] The present application also provides a computer program product, which includes computer code or computer program. When the computer code or computer program is run on a computer, the operations and / or processes performed by the method provided in the present application are executed.

[0417] In the several embodiments provided in this application, it should be understood that the disclosed systems, AMP devices and methods can be implemented in other ways. For example, the AMP device embodiments described above are only schematic. For example, the division of the modules is only a logical function division. In actual implementation, there may be other division methods, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, communication devices or modules, or can be an electrical, mechanical or other form of connection.

[0418] The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the technical effects of the solutions provided in the embodiments of the present application.

[0419] In addition, the functional modules in the various embodiments of the present application may be integrated into a processing module, or each module may exist physically separately, or two or more modules may be integrated into a single module. The above-mentioned integrated modules may be implemented in the form of hardware or software functional modules.

[0420] If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a readable storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned readable storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0421] 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 wireless energy transmission method, characterized in that, The method is applied to a first ambient energy AMP device, and the method includes: Sending first capability indication information through a wireless local area network (WLAN) link, where the first capability indication information is used to indicate the capability information of the first AMP device to receive a wireless power transfer (WPT) signal; Initiating a WPT establishment process based on the first capability indication information.

2. The method according to claim 1, wherein The method further includes: Receiving second capability indication information through the WLAN link, where the second capability indication information is used to indicate the capability information of a second AMP device to send the WPT signal.

3. The method according to claim 2, wherein The initiating the WPT establishment process based on the first capability indication information includes: Initiating the WPT establishment process when the first capability indication information matches the second capability indication information.

4. The method according to any one of claims 1 to 3, characterized in that, The first capability indication information includes at least one of the following: The frequency band supported by the first AMP device, the bandwidth supported by the first AMP device, or the WPT waveform supported by the first AMP device.

5. The method according to claim 4, wherein The first capability indication information further includes at least one of the following: The received power sensitivity of the first AMP device or the type of the first AMP device.

6. The method according to claim 5, characterized in that, The first capability indication information further includes at least one of the following: The antenna type of the first AMP device or the antenna polarization mode of the first AMP device.

7. The method according to any one of claims 2-6, characterized in that, The second capability indication information includes at least one of the following: The frequency band supported by the second AMP device, the bandwidth supported by the second AMP device, or the WPT waveform supported by the second AMP device.

8. The method according to claim 7, wherein The second capability indication information further includes at least one of the following: Whether the effective isotropic radiated power (EIRP) of the second AMP device is adjustable or the EIRP of the second AMP device.

9. The method according to claim 8, wherein The second capability indication information further includes at least one of the following: The antenna type of the second AMP device or the antenna polarization mode of the second AMP device.

10. The method according to claim 9, characterized in that, The second capability indication information further includes at least one of the following: The horizontal angle of the antenna of the second AMP device, the downward angle of the antenna of the second AMP device, whether the beam pattern of the second AMP device is adjustable, the beam pattern width of the second AMP device, or the beam pattern height of the second AMP device.

11. The method according to any one of claims 1 to 10, characterized in that, Initiating the WPT establishment process includes: Sending a WPT establishment request through the WLAN link, where the WPT establishment request is used to request the establishment of a WPT link; Receiving a WPT establishment response to the WPT establishment request through the WLAN link, where the WPT establishment response is used to indicate whether the establishment of the WPT link is successful.

12. The method according to any one of claims 1-11, characterized in that, The method further includes: Sending a WPT report through the WLAN link, where the WPT report is used to indicate WPT status information.

13. The method according to claim 12, wherein Before sending the WPT report, the method further includes: Receiving a WPT report request through the WLAN link, where the WPT report request is used to request the WPT report.

14. The method according to claim 12 or 13, characterized in that, The sending the WPT report includes: When a WPT alarm occurs in the first AMP device or the WPT signal is no longer needed, send the WPT report, which is used to indicate the occurrence of the WPT alarm in the first AMP device or the fact that the WPT signal is no longer needed.

15. The method according to any one of claims 1 to 14, characterized in that, The method further includes: Receiving a WPT tear-down via the WLAN link, which is used to indicate the tearing-down of the WPT process.

16. A wireless energy transmission method, characterized in that, The method is applied to a third environmental energy AMP device, and the method includes: Receiving first capability indication information via a wireless local area network (WLAN) link, which is used to indicate the capability information of a first AMP device to receive a wireless power transfer (WPT) signal; Responding to a WPT establishment process based on the first capability indication information.

17. The method according to claim 16, wherein The method further includes: Sending second capability indication information via the WLAN link, which is used to indicate the capability information of a second AMP device to send the WPT signal.

18. The method according to claim 17, wherein The responding to the WPT establishment process based on the first capability indication information includes: Responding to the WPT establishment process when the first capability indication information matches the second capability indication information.

19. The method according to any one of claims 15 - 18, characterized in that, The first capability indication information includes at least one of the following: The frequency band supported by the first AMP device, the bandwidth supported by the first AMP device, or the WPT waveform supported by the first AMP device.

20. The method according to claim 19, wherein The first capability indication information further includes at least one of the following: The received power sensitivity of the first AMP device or the type of the first AMP device.

21. The method according to claim 20, characterized in that, The first capability indication information further includes at least one of the following: The antenna type of the first AMP device or the antenna polarization mode of the first AMP device.

22. The method according to any one of claims 17-21, characterized in that, The second capability indication information includes at least one of the following: The frequency band supported by the second AMP device, the bandwidth supported by the second AMP device, or the WPT waveform supported by the second AMP device.

23. The method according to claim 22, wherein The second capability indication information further includes at least one of the following: Whether the effective isotropic radiated power (EIRP) of the second AMP device is adjustable or the EIRP of the second AMP device.

24. The method according to claim 23, wherein The second capability indication information further includes at least one of the following: The antenna type of the second AMP device or the antenna polarization mode of the second AMP device.

25. The method according to claim 24, wherein The second capability indication information further includes at least one of the following: The antenna horizontal angle of the second AMP device, the antenna downtilt angle of the second AMP device, whether the beam pattern of the second AMP device is adjustable, the beam pattern width of the second AMP device, or the beam pattern height of the second AMP device.

26. The method according to any one of claims 16-25, characterized in that, The responding to the WPT establishment process includes: Receiving a WPT establishment request via the WLAN link, which is used to request the establishment of a WPT link; Sending a WPT establishment response to the WPT establishment request via the WLAN link, which is used to indicate whether the establishment of the WPT link is successful.

27. The method according to any one of claims 16-26, characterized in that, The method further includes: Receiving a WPT report via the WLAN link, which is used to indicate WPT status information.

28. The method according to claim 27, wherein Before receiving the WPT report, the method further includes: Sending a WPT report request via the WLAN link, where the WPT report request is used to request the WPT report.

29. The method according to any one of claims 16 - 28, characterized in that, The method further includes: Sending a WPT tear-down via the WLAN link, where the WPT tear-down is used to indicate the tearing down of the WPT process.

30. An environmental energy AMP device, characterized in that, Includes a module for performing the method according to any one of claims 1-29.

31. An environmental energy AMP device, characterized in that, Includes a processor for performing the method according to any one of claims 1-29.

32. An environmental energy AMP device, characterized in that, Includes a logic circuit and an interface, with the logic circuit and the interface being coupled; The interface is used to input and / or output information, and the logic circuit is used to perform the method according to any one of claims 1-15, or the logic circuit is used to perform the method according to any one of claims 16-29.

33. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store a computer program, and when the computer program is executed, the method according to any one of claims 1-29 is executed.

34. A computer program product, characterized in that, When the computer program product is executed, the method according to any one of claims 1-29 is executed.

35. A communication system, characterized in that, The communication system includes a first ambient energy AMP device and a third AMP device, where the first AMP device is used to perform the method according to any one of claims 1-15, and the third AMP device is used to perform the method according to any one of claims 16-29.

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