Wireless energy transmission method and device

Abstract

The invention discloses a wireless energy transmission method and device, and is applied to the technical field of communication. The method and the device can be applied to the AMP field, such as supporting WPT, WLAN or IEEE series protocols. The method is suitable for IEEE (Institute of Electrical and Electronic Engineers) 802.11 protocols, such as IEEE 802.11 protocols related to AMP, or is suitable for other protocols of IEEE 802.11 series, such as an 802.11 a / b / g protocol, an 802.11 n protocol, an 802.11 ac protocol, an 802.11 ax protocol, an 802.11 be protocol, an 802.11 bn protocol and the like. The method comprises the following steps: a first AMP device sends first capability indication information through a WLAN link, and then initiates a WPT establishment process based on the first capability indication information. The third AMP device receives the first capability indication information and responds to the WPT establishment process. The interaction process of each AMP device is perfected, and the communication efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a wireless energy transfer method and apparatus. Background Art

[0002] 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 traditional consumer electronics markets and the booming Internet of Things (IoT) market. However, traditional IoT devices are usually powered by batteries with limited lifetimes, which bring the following problems to IoT devices: (1) They cannot operate in harsh communication environments (such as high temperature, extremely low temperature, high humidity, high pressure, high radiation, or high-speed movement environments); (2) They cannot achieve extremely small terminal sizes; (3) They cannot achieve extremely low terminal costs; (4) There are human maintenance costs such as battery replacement; (5) The recovery rate is low, which damages the Earth's ecosystem; (6) There are security risks.

[0003] To further reduce the deployment and operation and maintenance costs of Wi-Fi IoT, the IEEE 802.11 working group is discussing a new project named Ambient Power (AMP) that supports IoT devices with energy harvesting capabilities. By introducing radio frequency wireless power transfer (RF WPT) and using devices supporting RF WPT to replace traditional batteries, the bottleneck problems brought by traditional batteries are solved.

[0004] Therefore, the interaction method between devices is an issue being studied by those skilled in the art. Summary of the Invention

[0005] Embodiments of this application provide a wireless power transfer (WPT) method and apparatus, which improve the interaction process between various AMP devices, enabling the first AMP device to achieve RF energy harvesting.

[0006] In a first aspect, embodiments of this application provide a wireless energy transfer method. The method is applied to a first ambient power AMP device, which may include the AMP device itself, or a chip or functional module that can be disposed in the AMP device. For example, the AMP device may include an AMP station (STA). The method includes:

[0007] Send first capability indication information 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 a wireless power transfer (WPT) signal; initiate a WPT establishment process based on the first capability indication information.

[0008] In an embodiment of this application, by sending the first capability indication information, the first AMP device enables the third AMP device to know whether to accept or reject the WPT establishment process in combination with this first capability indication information. Thus, the interaction process between AMP devices is improved, enabling the third AMP device to reasonably judge the success or failure of the WPT establishment process in combination with the first capability indication information. Since the processing capability of the third AMP device is stronger, the accuracy of judging whether the WP establishment process can be successfully established can be further improved. Additionally, as the end requesting RF energy, the first AMP device initiating the WPT establishment process can also improve the efficiency of the second AMP device providing RF energy to the first AMP device, enabling the second AMP device to charge the first AMP device in a timely manner.

[0009] In a possible implementation, the method further includes: receiving second capability indication information via the WLAN link, where the second capability indication information is used to indicate the capability information of the second AMP device to send the WPT signal.

[0010] In an embodiment of this application, the first AMP device can simply judge whether to initiate a WPT establishment process by combining the first capability indication information and the second capability indication information, thereby improving the efficiency of successfully establishing the WPT establishment process. Exemplarily, the third AMP device can comprehensively combine the first capability indication information and the second capability indication information to judge whether the WPT establishment process initiated by the first AMP device can be successful, further improving the accuracy of judging whether the WPT establishment process can be successfully established and the efficiency of establishing the WPT process.

[0011] 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.

[0012] In an embodiment of this application, when the first capability indication information matches the second capability indication information, the first AMP device initiates the WPT establishment process, thereby improving the efficiency of the third AMP device confirming the WPT establishment process.

[0013] In a possible implementation, 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, the WPT waveform supported by the first AMP device, the received power sensitivity of the first AMP device, the type of the first AMP device, the antenna type of the first AMP device, or the antenna polarization mode of the first AMP device.

[0014] In a possible implementation, 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.

[0015] In the embodiments of the present application, when the frequency band supported by the first AMP device is different 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 cannot receive the WPT signal. Therefore, by indicating the frequency band supported by itself, the first AMP device can enable the third AMP device to correctly determine whether the first AMP device can successfully receive the WPT signal, improving communication efficiency. When 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 interacting with the channel bandwidth supported by the first AMP device, the power stability of the WPT signal can be ensured. 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 cannot convert the received WPT signal into a DC signal through the rectifier, so that the WPT signal cannot provide RF energy for 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.

[0016] In a possible implementation, 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.

[0017] In the embodiments of the present application, when the received power sensitivity of the first AMP device does not match the transmit power of the second AMP device, for example, when the second AMP device transmits the WPT signal at a certain transmit power, and the received power of the WPT signal after signal attenuation when reaching the first AMP device is less than the received power sensitivity of the first AMP device, the first AMP device cannot detect the WPT signal, and thus cannot provide RF energy for the first AMP device.

[0018] In a possible implementation, 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.

[0019] In the embodiments of the present application, the power required for different antenna types to transmit the same signal is different. Therefore, the first AMP device can transmit its antenna type and use this antenna type as a reference for the capability information. When the antenna type of the first AMP device does not match the antenna type of the second AMP device, for example, the antenna type of the first AMP device is circular polarization and the antenna type of the second AMP device is linear polarization, it will result in low transmission efficiency of the WPT signal. Therefore, by interacting with the antenna polarization mode, the transmission efficiency of the WPT signal can be improved.

[0020] In a 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 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.

[0021] In a 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, or the WPT waveform supported by the second AMP device.

[0022] In a possible implementation, 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.

[0023] In a possible implementation, 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.

[0024] In a possible implementation, 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.

[0025] In the embodiments of the present application, the second AMP device can enable the first AMP device to know the radiation range of the antenna based on the information such as the orientation of the antenna, the downtilt angle of the antenna, the bandwidth of the antenna beam, or the height of the antenna beam indicated to the first AMP device. Thus, the first AMP device can know whether it is within the radiation range of the second AMP device. If it is not within the radiation range, the transmission efficiency will be very low, and the first AMP device can refrain from initiating a WPT establishment request.

[0026] In a possible implementation manner, initiating a WPT establishment process includes: sending a WPT establishment request through the WLAN link, where 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; receiving a WPT establishment response to the WPT establishment request through the WLAN link.

[0027] Exemplarily, the WPT establishment response can be used to indicate whether the establishment of the WPT link is successful.

[0028] In the embodiments 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 according to the WPT establishment request; the third AMP device informs the first AMP device whether the establishment of the WPT link is successful by sending a WPT establishment response. If the establishment of the WPT link fails, it means that the second AMP device cannot provide wireless energy for the first AMP device; if the establishment of the WPT link is successful, it means that the second AMP device can provide wireless energy for the first AMP device (such as sending a WPT signal). The embodiments of the present application improve the interaction process of establishing a WPT link between different AMP devices and enhance the reliability of wireless energy transmission.

[0029] In a possible implementation manner, the method further includes: sending a WPT report, where the WPT report is used to report the WPT status information of the first AMP device.

[0030] In a possible implementation manner, the method further includes: before sending the WPT report, receiving a WPT report request that requires the first AMP device to report the WPT status information.

[0031] In the embodiments of the present application, when the first AMP device enters the WPT process, it can send a WPT report to the third AMP device for reporting the WPT status; the third AMP device can determine whether it is necessary to adjust the WPT process according to the WPT status information, further enhancing the reliability of wireless energy transmission.

[0032] In the embodiments of the present application, during the WPT process, the third AMP device may send a WPT report request to the first AMP device, requesting to report the WPT status information; after receiving the WPT report request, the first AMP device sends a WPT report to the third AMP device for reporting the WPT status information. Combining the above possible implementation manners, the first AMP device can actively or passively report the WPT status information, improving the interaction process between different AMP devices during the WPT process and further enhancing the reliability of wireless energy transmission.

[0033] In a possible implementation manner, the method further includes: when a WPT alarm occurs in the first AMP device or the WPT signal is no longer needed, sending the WPT report, where the WPT report is used to indicate that a WPT alarm has occurred in the first AMP device or the WPT signal is no longer needed.

[0034] In the embodiments of the present application, when the first AMP device discovers that a WPT alarm has occurred or the WPT signal is no longer needed, for example, when the first AMP device discovers that the wireless energy receiving module is about to be damaged or is fully charged, the first AMP device can actively send a WPT report to the third AMP device and indicate in the WPT report that a WPT alarm has occurred or the WPT signal is no longer needed; the third AMP device stops the WPT process according to the WPT report. This is both an active WPT reporting method and an implicit way to stop the WPT process.

[0035] In a possible implementation manner, the method further includes: receiving a WPT disassembly, where the WPT disassembly is used to inform the first AMP device to stop the WPT process; sending an ACK, where the ACK is used to indicate that the first AMP device has successfully received the indication to stop the WPT process.

[0036] In the embodiments of the present application, the third AMP device informs the first AMP device to stop the WPT process by sending a WPT disassembly; the first AMP device informs that it has successfully received the indication to stop the WPT process by sending back an ACK. This is an explicit way to stop the WPT process, completing the interaction process between different AMP devices during the WPT disassembly stage with the above implicit way to stop the WPT process and further enhancing the reliability of wireless energy transmission.

[0037] In a 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; the WPT status control field is used to indicate the WPT status information that will be reported in the WPT report.

[0038] In a 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 in the WPT process; the WPT modulation field is used to indicate the modulation method used in the WPT process; the WPT duration field is used to indicate the duration of the WPT process.

[0039] In a 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; whether to report the temperature of the first AMP device.

[0040] In the embodiment of the present application, the first AMP device sends a WPT establishment request to the third AMP device to inform the parameters related to WPT link establishment, such as the frequency range, modulation method, and duration used in the WPT process, and can also inform the WPT status information that the first AMP device will report in the reporting stage, such as whether to report the voltage output by the rectifier, whether to report the voltage of the energy storage, whether to report the amount of electricity received, and whether to report the temperature. The third AMP device can determine whether the WPT link can be successfully established according to the above WPT establishment parameter field, and can determine the WPT status information that the first AMP device needs to report in the reporting stage according to the WPT status control field. The interaction process of whether the first AMP device and the second AMP device can successfully establish a WPT link in the establishment stage is improved, and the accuracy of judging whether the WPT link is successfully established is improved.

[0041] In a 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 status control field, and WPT status 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 status control field is used to indicate the WPT status information that will be reported in the WPT report; the WPT status information is used to indicate the WPT status information reported by the first AMP device.

[0042] In a possible implementation, the WPT energy control information includes at least one of the following pieces of information: the urgency of the energy control information reported by the first AMP device; the power state received by the first AMP device; whether the voltage of the first AMP device is too high; whether the current of the first AMP device is too high; whether the temperature of the first AMP device is too high; whether the first AMP device has a self - protection mechanism.

[0043] In a possible implementation, the WPT status control field includes at least one of the following fields: whether the DC voltage output by the rectifier of the first AMP device will be reported; whether the voltage of the energy storage of the first AMP device will be reported; whether the amount of electricity received by the first AMP device will be reported; whether the temperature of the first AMP device will be reported.

[0044] In a possible implementation, the WPT status information includes at least one of the following pieces of information: the DC voltage output by the rectifier of the first AMP device; the voltage of the energy storage of the first AMP device; the amount of electricity received by the first AMP device; the temperature of the first AMP device.

[0045] In the embodiments of the present application, the first AMP device enables the third AMP device to obtain WPT energy control information by sending a WPT report to the third AMP device. For example, whether the ability control information of the WPT report is urgent; whether the received power of the first AMP device reaches the minimum received power, whether it reaches the maximum received power, etc.; whether the voltage of the first AMP device is too high, whether the current is too high, whether the temperature is too high, and whether there is a self-protection mechanism, etc. The third AMP device can adjust the transmission power of WPT according to 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, the received power, the temperature, etc. The third AMP device can judge whether to continue the WPT process according to the WPT status information. The interaction process of the information required for the third AMP device to control the WPT process in the WPT process is improved, and the reliability of wireless energy transmission is further improved.

[0046] In a possible implementation manner, the power state received by the first AMP device includes at least one of the following state information: the received power does not reach the minimum received power threshold; the received power is between the minimum and maximum received power thresholds; the received power reaches the maximum received power threshold; the received power exceeds the first threshold of the maximum power; the received power exceeds the second threshold of the maximum power; the first AMP device issues a WPT alarm; the first AMP device no longer requires WPT.

[0047] In a possible implementation manner, the power state received by the first AMP device further includes at least one of the following state information: the received power does not reach the minimum received power threshold, the received power is between the minimum and maximum received power thresholds, the received power reaches the maximum received power threshold, the received power exceeds the first threshold of the maximum power, the received power exceeds the second threshold of the maximum power, the first AMP device issues a WPT alarm, and the first AMP device no longer requires the WPT signal. The judgment accuracy of the WPT status information is further improved.

[0048] In the embodiments of the present application, the third AMP device can increase or decrease the transmission power of WPT according to the reported power state, or stop the WPT process.

[0049] In a second aspect, the embodiments of the present application provide a wireless energy transmission method, which is applied to a third environmental energy AMP device, and the method includes:

[0050] Receive first capability indication information via a WLAN link, where the first capability indication information is used to indicate the capability information of a first AMP device to receive a wireless power transfer (WPT) signal; respond to a WPT establishment process based on the first capability indication information.

[0051] In a possible implementation, the method further includes: sending second capability indication information via 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;

[0052] In a possible implementation, 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.

[0053] In a possible implementation, 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.

[0054] In a possible implementation, the first capability indication information further includes at least one of the following: the receive power sensitivity of the first AMP device or the type of the first AMP device.

[0055] In a possible implementation, 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.

[0056] In a 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, or the WPT waveform supported by the second AMP device.

[0057] In a possible implementation, 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.

[0058] In a possible implementation, 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.

[0059] In a possible implementation, 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 tilt 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.

[0060] In a possible implementation, the response WPT establishment process includes: receiving a WPT establishment request through the WLAN link, where the WPT establishment request is used to request to initiate the 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.

[0061] In a possible implementation, the method further includes: receiving a WPT report, where the WPT report reports WPT status information.

[0062] In a possible implementation, the method further includes: before receiving the WPT report, sending a WPT report request, where the WPT report request requests to report WPT status information.

[0063] In a possible implementation, the method further includes: sending a WPT tear-down, where the WPT tear-down is used to indicate that the third AMP device is to stop the WPT process; receiving an ACK, where the ACK is used to indicate that the first AMP device has successfully received the indication to stop the WPT process, and the second AMP device stops the WPT process.

[0064] In a possible implementation, the WPT establishment response further includes at least one of the following fields: a category field, a WPT action field, a status code field, a WPT establishment parameter field, 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 the WPT link establishment; the WPT status control field is used to indicate the WPT status information that needs to be reported in the WPT report.

[0065] In a 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 in the WPT process; the WPT modulation field is used to indicate the modulation method used in the WPT process; the WPT start time field is used to indicate the start time of the WPT process; the WPT duration field is used to indicate the duration of the WPT process.

[0066] In a 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; whether to report the voltage of the energy storage; whether to report the received power; whether to report the temperature.

[0067] In a possible implementation, the WPT report request further 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.

[0068] In a 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; whether to report the voltage of the energy storage; whether to report the received power; whether to report the temperature.

[0069] In a possible implementation, the WPT removal further 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 removal 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 removal.

[0070] In a possible implementation, the method further includes: sending a WPT control, where the WPT control is used to start or stop the WPT process.

[0071] In a third aspect, an embodiment of the present application provides a first AMP device for performing the method in the first aspect or any possible implementation. The first AMP device includes a module for performing the method in the first aspect or any possible implementation.

[0072] Fourthly, an embodiment of the present application provides a third AMP device for performing the method in the second aspect or any possible implementation manner. The third AMP device includes a module for performing the method in the second aspect or any possible implementation manner.

[0073] Fifthly, an embodiment of the present application provides a first AMP device. The first AMP device includes a processor for performing the method shown in the first aspect or any possible implementation manner above. The processor is used to execute a program stored in a memory. When the program is executed, the method shown in the first aspect or any possible implementation manner above is executed.

[0074] In a possible implementation manner, the memory is located outside the first AMP device.

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

[0076] 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 first AMP device may be a chip.

[0077] In a possible implementation manner, the first AMP device further includes a transceiver for receiving information or sending information.

[0078] Sixthly, an embodiment of the present application provides a third AMP device. The third AMP device includes a processor for performing the method shown in the second aspect or any possible implementation manner above. The processor is used to execute a program stored in a memory. When the program is executed, the method shown in the second aspect or any possible implementation manner above is executed.

[0079] In a possible implementation manner, the memory is located outside the third AMP device.

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

[0081] 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.

[0082] In a possible implementation manner, the third AMP device further includes a transceiver for receiving information or sending information.

[0083] 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 is coupled to the interface; the interface is used for inputting and / or outputting information, and the logic circuit is used for executing the method described in the first aspect or any possible implementation manner.

[0084] 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 is coupled to the interface; the interface is used for inputting and / or outputting information, and the logic circuit is used for executing the method described in the second aspect or any possible implementation manner.

[0085] Ninth aspect, an embodiment of the present application provides a computer-readable storage medium, which is used for storing a computer program. When it runs on a computer, the method described in any one of the first aspect to the second aspect or any possible implementation manner is executed.

[0086] Tenth aspect, an embodiment of the present application provides a computer program product. When it runs on a computer, the method described in any one of the first aspect to the second aspect or any possible implementation manner is executed.

[0087] Eleventh aspect, an embodiment of the present application provides a computer program. When the computer program runs on a computer, the method described in any one of the first aspect to the second aspect or any possible implementation manner is executed.

[0088] 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 for executing the method described in the first aspect or any possible implementation manner of the first aspect, and the third AMP device is used for executing the method described in the second aspect or any possible implementation manner of the second aspect. Description of the Drawings

[0089] Figure 1 is a schematic structural diagram of an AMP STA provided by an embodiment of the present application;

[0090] Figure 2 is a schematic structural diagram of a second AMP device provided by an embodiment of the present application;

[0091] Figure 3a is a schematic diagram of a communication system provided by an embodiment of the present application;

[0092] Figure 3b is a schematic diagram of a communication system shown by taking the second AMP device as an AP and the first AMP device as an AMP STA as an example;

[0093] Figure 3c It is a schematic diagram of a communication system exemplified by using the second AMP device as a relay node and the first AMP device as an AMP STA;

[0094] Figure 4a It is a schematic diagram of another communication system provided by an embodiment of the present application;

[0095] Figure 4b It is a schematic diagram of a communication system exemplified by using the second AMP device as an exciter and the first AMP device as an AMP STA;

[0096] Figure 5a It is a schematic diagram of an interaction stage of a wireless energy transmission method provided by an embodiment of the present application;

[0097] Figure 5b It is Figure 3b a schematic diagram of a process flow of a wireless energy transmission method exemplified by;

[0098] Figure 5c It is Figure 3c a schematic diagram of a process flow of a wireless energy transmission method exemplified by;

[0099] Figure 5d It is Figure 4b a schematic diagram of a process flow of a wireless energy transmission method exemplified by;

[0100] Figure 6 It is a schematic diagram of a process flow of a wireless energy transmission method provided by an embodiment of the present application;

[0101] Figure 7a It is a schematic diagram of a format of a first capability indication information provided by an embodiment of the present application;

[0102] Figure 7b It is a schematic diagram of a format of a first capability element provided by an embodiment of the present application;

[0103] Figure 7c It is a schematic diagram of a format of a first capability frame provided by an embodiment of the present application;

[0104] Figure 8a It is a schematic diagram of a format of another first capability indication information provided by an embodiment of the present application;

[0105] Figure 8b It is a schematic diagram of a format of yet another first capability indication information provided by an embodiment of the present application;

[0106] Figure 9a It is a schematic diagram of a format of a second capability indication information provided by an embodiment of the present application;

[0107] Figure 9bIt is a schematic diagram of the format of a second capability element provided by an embodiment of the present application;

[0108] Figure 9c It is a schematic diagram of the format of a second capability frame provided by an embodiment of the present application;

[0109] Figure 10a It is a schematic diagram of the format of another second capability indication information provided by an embodiment of the present application;

[0110] Figure 10b It is a schematic diagram of the format of yet another second capability indication information provided by an embodiment of the present application;

[0111] Figure 10c It is a schematic diagram of the format of yet another second capability indication information provided by an embodiment of the present application;

[0112] Figure 11a It is the category field in the existing Wi-Fi protocol;

[0113] Figure 11b It is a schematic diagram of a WPT category and WPT action field provided by an embodiment of the present application;

[0114] Figure 12a It is a schematic diagram of a WPT establishment parameter field provided by an embodiment of the present application;

[0115] Figure 12b It is a schematic diagram of a WPT status control field provided by an embodiment of the present application;

[0116] Figure 13 It is a schematic diagram of parameter selection for a WPT status control field provided by an embodiment of the present application;

[0117] Figure 14a It is a schematic diagram of a WPT energy control field provided by an embodiment of the present application;

[0118] Figure 14b It is a schematic diagram of a WPT status information provided by an embodiment of the present application;

[0119] Figure 15 It is a schematic diagram of the structure of an AMP device provided by an embodiment of the present application;

[0120] Figure 16 It is a schematic diagram of the structure of an AMP device provided by an embodiment of the present application;

[0121] Figure 17 It is a schematic diagram of the structure of an AMP device provided by an embodiment of the present application. Detailed implementation manners

[0122] To facilitate the understanding of the technical solution of this application, the following will further describe this application in conjunction with the accompanying drawings.

[0123] In the description, claims, and drawings of this application, terms such as "first" and "second" are only used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device, etc. that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products, or devices, etc.

[0124] As used herein, "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The phrase appearing at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art can explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0125] In this application, "at least one (item)" means one or more, "a plurality" means two or more, "at least two (items)" means two or three or more, and "and / or" is used to describe the association relationship of associated objects, indicating that there can be three relationships. For example, "A and / or B" can represent: only A exists, only B exists, and both A and B exist simultaneously. Here, A and B can be singular or plural. "Or" indicates that there can be two relationships, such as only A exists, only B exists; when A and B are not mutually exclusive, it can also represent three relationships, such as only A exists, only B exists, and both A and B exist simultaneously. The character " / " generally represents an "or" relationship between the associated objects before and after. "At least one (one) of the following" or its similar expressions refer to any combination of these items. For example, at least one (one) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c".

[0126] In this application, "indicate" can include direct indication, indirect indication, display indication, and implicit indication. When it is described that a certain indication information is used to indicate A, it can be understood that this indication information carries A, directly indicates A, or indirectly indicates A.

[0127] 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. For example, 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. It is also possible to indirectly indicate the information to be indicated by indicating other information, where there is an association relationship between the other information and the information to be indicated. It is also possible to only indicate a part of the information to be indicated, while the other parts of the information to be indicated are known or pre-agreed. For example, it is also possible to use the pre-agreed (such as protocol-defined) arrangement order of each piece of information to implement the indication of specific information, thereby reducing the indication overhead to a certain extent. In addition, the information to be indicated can be sent as a whole, or can be divided into multiple sub-information and sent separately, and the sending periods and / or sending opportunities of these sub-information can be the same or different.

[0128] In this application, "sending" and "receiving" represent the direction of signal transmission. For example, "sending information to XX" can be understood as the destination of the information being XX, which can include directly sending through the air interface, and also include indirectly sending through the air interface by other units or modules. "Receiving information from YY" can be understood as the source of the information being YY, which can include directly receiving from YY through the air interface, and can also include indirectly 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 a network device and a terminal device, or can be carried out within a device, for example, sending or receiving between components within a device, between modules, between chips, between software modules or hardware modules through a bus, trace or interface.

[0129] The following introduces the fields involved in the embodiments of this application.

[0130] The technical solutions provided by the embodiments of this application can be applied to the AMP field. For example, it can support wireless power transfer (WPT), wireless local area network (WLAN), or Institute of Electrical and Electronics Engineers (IEEE) series protocols.

[0131] The IEEE 802.11 AMP 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 802.11 AMP standard specification. Exemplarily, 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 category (AC) is set to access category_background (AC_BK). (3) There is at least one WPT mode in the Sub-1 GHz frequency band for indicating radio frequency (RF) energy harvesting. Exemplarily, 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.

[0132] The method provided in the embodiments of this application can be applicable to the IEEE 802.11 protocols related to AMP, or 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 the next-generation protocol, etc., not listed one by one). The technical solutions provided in the embodiments of this application can also be applied to wireless personal area networks (WPANs) based on millimeter wave (MMW) and ultra-wideband (UWB) technologies. For example, the method provided in the embodiments of this application can be applicable to the IEEE 802.15 series of protocols, such as 802.15.4a protocols, 802.15.4z protocols, or 802.15.4ab protocols, or future generations of UWB WPAN protocols, etc., not listed one by one.

[0133] The technical solutions provided by the embodiments of this application can also be applied to the following communication systems. For example, it can be an Internet of Things (IoT) system, vehicle-to-everything (V2X, where X can represent anything), device-to-device (D2D), narrow band Internet of Things (NB-IoT) system, Long Term Evolution (LTE) system, 5th-generation (5G) communication system, and new communication systems emerging in the future development of communications. For example, the V2X can include vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P), or vehicle-to-network (V2N) communication, etc.

[0134] With the continuous popularization of the AMP application scenarios, the AMP system will be applied to more scenarios or industries. For example, it can be applied to the IoT industry, the vehicle networking industry, the banking industry, enterprise office, stadium exhibition halls, concert halls, hotel rooms, dormitories, wards, classrooms, shopping malls, squares, streets, production workshops, and warehouses, etc. Of course, devices that support WLAN communication or sensing (such as access points or stations) can be sensor nodes in a smart city (such as smart water meters, smart electricity meters, smart air detection nodes), smart devices in a smart home (such as smart cameras, projectors, displays, televisions, speakers, refrigerators, washing machines, etc.), nodes in the Internet of Things, entertainment terminals (such as wearable devices like augmented reality (AR), virtual reality (VR), etc.), smart devices in smart office (such as printers, projectors, loudspeakers, speakers, etc.), vehicle networking devices in vehicle networking, infrastructure in daily life scenarios (such as vending machines, self-service navigation stations in shopping malls, self-service cashiers, self-service ordering machines, etc.), and devices in large sports and music venues.

[0135] Although the embodiments of the present application mainly relate to networks of the IEEE 802.11 series standards, various aspects involved in the embodiments of the present application can also be extended to other networks adopting various standards or protocols. For example, Bluetooth, High Performance Radio LAN (HIPERLAN, a wireless standard similar to the IEEE 802.11 standard), and Wide Area Network (WAN), or other networks known currently or developed in the future.

[0136] The following introduces the devices and terms involved in the embodiments of the present application.

[0137] 1. Devices for RF energy harvesting

[0138] Environmental energy may include, but is not limited to, radio frequency energy (i.e., RF energy), kinetic energy, thermal energy, solar energy, etc., which exist 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 RF energy it harvests into electrical energy and then store it in an energy storage unit (such as a capacitor or a battery), or it can also directly use the harvested RF energy to drive logic circuits, digital chips, or sensor devices, etc., so as to complete at least one of the following functions: modulating the reflected signal, transmitting the reflected signal, collecting and processing the sensing information. The reflected signal shown here refers to the reflected signal of backscatter communication.

[0139] In the embodiments of the present application, the device for RF energy harvesting can also be referred to as a device for converting RF energy into DC, or a device capable of realizing RF energy harvesting, or a low-power device, or an AMP Station (STA), etc. The specific name of this device is not limited in the embodiments of the present application. Taking the AMP STA as an example, it can convert the RF energy it harvests into electrical energy. For example, the AMP STA can also convert the RF energy into other energy, and this other energy can be used to realize functions similar to electrical energy. For ease of description, the device for RF energy harvesting will be referred to as the first AMP device hereinafter (only for example). For example, the first AMP device can include an AMP STA. The AMP STA can be a low-power device of a whole machine, or a chip, a processing system, or a functional module installed in the whole machine device. The device installed with these chips, processing systems, or functional modules can implement the methods and functions of the embodiments of the present application under the control of the chip, processing system, or functional module.

[0140] The AMP STA can be a low-power IoT device that supports RF energy harvesting. The AMP STA can support receiving RF energy or communication or sensing using the AMP protocol or the WLAN protocol, and has the ability to wirelessly transfer energy or communicate or sense with other non-AP STAs or access points in the AMP network or the WLAN network. Exemplarily, the AMP STA can include the AMP STA of type A, the AMP STA of type B, and the AMP STA of type C. Of course, the classification of the AMP STA here is only an example. For example, as the standard progresses, the AMP STA can be classified in other ways in the future. The embodiments of the present application do not limit this.

[0141] The following examples illustrate the characteristics satisfied by the AMP STAs of type A to type C.

[0142] The AMP STA of type A can satisfy at least one of the following: RF energy is part of the energy source of this type of AMP STA, has strong communication capabilities, has a large energy storage capacity, and supports the Wi-Fi protocol. The strong communication capabilities shown here can be relative to the AMP STAs of type B and type C. For example, the AMP STA of type A can process PPDUs with an OFDM modulation method, or process PPDUs with an on-off keying (OOK) modulation method, etc. Another example is that the AMP STA of type A can support protocols such as IEEE 802.11b / g / n / ac / ax / be / bn. The large energy storage capacity shown here is relative to the AMP STAs of type B and type C. For example, this type of AMP STA of type A can be provided with a battery.

[0143] The AMP STA of type B can satisfy at least one of the following: has a certain energy storage capacity (such as the energy storage capacity is greater than or equal to the first threshold and less than or equal to the second threshold), and supports low-power transceiver operations. The energy storage capacity of this type of AMP STA is less than that of the AMP STA of type A, but greater than that of the AMP STA of type C. For example, the first threshold can be greater than or equal to the third threshold. The specific values of the first threshold, the second threshold, and the third threshold are not limited in the embodiments of the present application.

[0144] The AMP STA of type C can meet at least one of the following: the energy storage capacity is less than or equal to a third threshold (such as this threshold can be equal to 0), support low-power transceiver operations, support backscatter communication. Such an AMP STA can achieve the purpose of communication by collecting RF energy. Exemplarily, the AMP STA of type C may not support Wi-Fi protocols, such as IEEE 802.11b / g / n / ac / ax / be / bn and other protocols.

[0145] The above three types of AMP STAs all have the ability to collect RF energy. For the above three types of AMP STAs, in terms of energy storage capacity, type A > type B > type C. In terms of communication ability, type A > type B > type C. In terms of power consumption, type A > type B > type C, that is, the power consumption of type C is the lowest.

[0146] Figure 1 It is a schematic structural diagram of an AMP STA provided by an embodiment of the present application. As Figure 1 shown, the AMP STA can include at least one of the following: a WPT radio subsystem or a power subsystem. Exemplarily, the AMP STA may further include a Wi-Fi subsystem. The names of the respective subsystems shown here are only examples and should not be construed as limiting the embodiments of the present application.

[0147] The power subsystem may include a power management integrated circuit (PMIC) or a power management module. The power management module can be used to provide appropriate current (I) and voltage (V) to the energy storage module for storing electrical energy. The PMIC can 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 further include a voltage regulator (such as a DC / DC) ( Figure 1 not shown). When the DC voltage output by the rectifier is too low (such as lower than the available voltage of the PMIC), the voltage regulator can be used to boost the voltage and convert the rectifier voltage into the available voltage of the PMIC or the power management module.

[0148] The WPT radio subsystem may include an antenna and a rectifier. The antenna can be used to receive WPT signals, and the rectifier can be used to convert RF energy into a stable DC voltage.

[0149] The Wi-Fi subsystem may include an antenna, a Wi-Fi module, and sensors. For example, the Wi-Fi module may include a baseband circuit and a radio frequency circuit, etc. 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 be 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, a demodulator. The Wi-Fi subsystem may be used to support the communication of WLAN links (such as the communication links and P2P links shown below). For example, it supports sending at least one of the following on the WLAN link: first capability indication information, a WPT establishment request, a WPT report, or an acknowledgement (ACK), etc. It also supports receiving at least one of the following on the WLAN link: second capability indication information, a WPT establishment response, a WPT report request, or a WPT disconnection, etc. 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 devices, discrete gate or transistor logic devices, discrete hardware components, etc., and can implement or execute the various methods and steps in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. For example, the processor may be used to process Wi-Fi protocols and communication data, control the entire AMP device, execute software programs, process the data of software programs, etc. For example, when the first AMP device is powered on, the processor may read the software program in the memory ( Figure 1 (not shown in the figure)), interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be wirelessly transmitted, the processor performs baseband processing on the data to be transmitted and then outputs a baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and then transmits the radio frequency signal outward in the form of electromagnetic waves through the antenna. 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.

[0150] As an example, for an AMP STA of type A, the AMP STA may include a WPT wireless electronic subsystem, a power supply subsystem, a Wi-Fi subsystem, and an energy storage module. As another example, for an AMP STA of type B, the AMP STA may include a WPT wireless electronic subsystem, a power supply subsystem, and an energy storage module. For example, the AMP STA may also include a Wi-Fi subsystem. As yet another example, for an AMP STA of type C, the AMP STA may include a WPT wireless electronic subsystem, etc. The structure of the AMP STA of type C is not limited in the embodiments of the present application.

[0151] The structure of the AMP STA shown here is only an example. In a specific implementation, the AMP STA may have more or fewer devices, and the embodiments of the present application do not limit this. The wireless transmission method provided by the embodiments of the present application can be applied to the AMP STA of type A or type B described above.

[0152] 2. Device for providing RF energy

[0153] The device for providing RF energy (or a device with a charging function) can provide RF energy for the first AMP device. For example, the device for providing RF energy can achieve the purpose of providing RF energy for 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, this WPT signal can also be called an energy transfer signal or a signal for transmitting RF energy or a signal for RF energy collection, etc. The embodiments of the present application do not limit the name of this WPT signal.

[0154] For ease of description, the device for providing RF energy will be referred to as the second AMP device (only an example) hereinafter. The second AMP device may have the following examples:

[0155] As an example, the second AMP device can be an AP, or an AMP AP.

[0156] An AP is a device with wireless communication functions, supporting wireless energy transfer or communication or sensing using the WLAN protocol (including the AMP protocol), and having the function of wireless energy transfer or communication or sensing with other devices (such as non-access point stations (non-AP STAs) or other access points or AMP STAs) in the AMP network or WLAN network. Of course, it can also have the function of communicating or sensing with other devices. For example, an AP is a device that provides services for non-AP STAs, or an AP is a device that provides services for AMP STAs, and can support 802.11 series protocols or subsequent protocols, etc.

[0157] The AP is equivalent to a bridge connecting a wired network and a 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 whole device, or a chip, a processing system, or a functional module installed in the whole device. The device installed with these chips, processing systems, or functional modules can, under the control of the chip, processing system, or functional module, implement the methods and functions of the embodiments of the present application. 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, mainly deployed in homes, inside buildings, and inside campuses, with a typical coverage radius of dozens 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, a router, a switch, or a bridge; 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 to the AMP STA. Of course, the AP can also be a chip, a processing system, or a module in the above various forms of devices, so as to implement the methods and functions of the embodiments of the present application.

[0158] Exemplarily, the second AMP device can also be an AP belonging to a multi-link device (MLD). Exemplarily, a multi-link device (MLD) means that the device has multiple APs at the same time, each working on a different frequency band or channel. The multi-link device includes multiple subordinate APs. The subordinate APs can be physical APs or logical APs. Each AP can work on a link, a frequency band, or a channel, etc.

[0159] As another example, the second AMP device can be an energizer (or called an excitation node or an excitation device, etc.). For ease of description, the energizer will be used as an example for illustration below.

[0160] The energizer can be used to provide RF energy to the AMP STA. And the energizer can also communicate with the AP using the Wi-Fi protocol. Exemplarily, the energizer does not have low-power communication with the AMP STA. For example, there may be no communication link between the energizer and the AMP STA.

[0161] As yet another example, the second AMP device can be a relay node (or called a repeater or a relay device, etc.). The relay node can be used to amplify signals, compensate for signal attenuation, and support communication (such as including long-distance communication). Generally speaking, both the energizer and the relay node can be used to provide RF energy. The difference is that the relay node can also achieve long-distance communication. For ease of description, the relay node will be used as an example for illustration below.

[0162] Figure 2This is a schematic structural diagram of a second AMP device provided by an embodiment of the present application. As Figure 2 shown, the device includes at least one of the following: a power supply subsystem, a WPT wireless electronic subsystem, and a Wi-Fi subsystem. The names of the respective subsystems shown here are only examples and should not be construed as limiting the embodiments of the present application.

[0163] The power supply subsystem may include a power supply module and a voltage regulator (such as a DC / DC). For example, the power supply module can be used to provide a DC power supply, and the voltage regulator is an effective device for converting one DC voltage to another DC voltage. When the input voltage is low, the voltage regulator can be used for boosting; when the input voltage is high, the voltage regulator can be used for bucking. These devices can provide DC power to different parts of the system at the correct voltage.

[0164] The WPT wireless electronic subsystem may include an RF frequency generator, a power amplifier (PA), and an antenna. The WPT wireless electronic subsystem can be used to transmit WPT signals. For example, the RF frequency generator is used to generate the RF of communication or WPT signals, the power amplifier is used to amplify the power of the WPT signals, and the antenna is used to transmit the WPT signals.

[0165] The Wi-Fi subsystem may include an antenna and a Wi-Fi module. For example, the Wi-Fi module may include a baseband circuit and an RF circuit. The description of the Wi-Fi module can refer to Figure 1 , which will not be elaborated here. The Wi-Fi subsystem can be used to support the communication of WLAN links (such as the communication link and P2P link shown below). For example, it supports sending at least one of the following on the WLAN link: second capability indication information, WPT establishment response, WPT report request, or WPT disconnection, etc. For example, it supports receiving at least one of the following on the WLAN link: first capability indication information, WPT establishment request, WPT report, or ACK, etc. The description of the Wi-Fi module and the antenna can refer to Figure 1 the description, which will not be elaborated here.

[0166] The structure of the second AMP device shown here is only an example. In specific implementations, the second AMP device may have more or fewer components, and the embodiments of the present application do not limit this.

[0167] 3. Devices Communicating with the First AMP Device

[0168] The device can be used to communicate with the first AMP device, or the device is capable of communicating 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 on a WLAN link, or receive information from the first AMP device on a WLAN link. For ease of description, in the embodiments of the present application, a device that can communicate with the first AMP device is referred to as a third AMP device.

[0169] Based on different capabilities, the above-mentioned second AMP device can also be used to communicate with the first AMP device. Exemplarily, the second AMP device can be used to provide RF energy and also to communicate with the first AMP device. For example, when the second AMP device is an AP or a relay node, the AP or the relay node can be used to provide RF energy and also to communicate with the first AMP device.

[0170] 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 also to communicate with the first AMP device. At this time, the second AMP device (i.e., the third AMP device) can be an AP or a relay node.

[0171] 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 can be a device such as an AP or a relay node that can communicate with the first AMP device, and specific examples are not listed one by one here.

[0172] In the embodiments of the present application, the first AMP device, the second AMP device, and the third AMP device are all distinguished from different functions, and the specific product forms of these three devices are not limited in the embodiments of the present application.

[0173] 4. WLAN Link and WPT Link

[0174] WLAN link: A wireless transmission link between two devices in a WLAN. For example, a transmitted signal is transmitted through a WLAN link, and the receiving end can demodulate useful information from the received signal. The useful information can include, but is not limited to, data, control, or management information, etc. The WLAN link shown in the embodiments of the present application can 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: first capability indication information, second capability indication information, WPT establishment request, WPT establishment response, WPT report request, WPT report, WPT disconnection, or ACK, etc.

[0175] WPT link (or WPT energy transfer link): A link used for wireless energy transfer between two devices in a WLAN. For example, when a transmitted signal is transferred through the WPT link, the receiving end can directly perform energy conversion from radio frequency to direct current on the received radio frequency signal. Or rather, the receiving end does not need to perform information demodulation.

[0176] The following describes the system involved in the embodiments of the present application.

[0177] Figure 3a It is a schematic diagram of a communication system provided by an embodiment of the present application. Figure 3a In [the figure], the second AMP device can both provide RF energy for the first AMP device and communicate with the first AMP device.

[0178] As a possible implementation, taking the second AMP device as an AP and the first AMP device as an AMP STA as an example, as Figure 3b shown. Figure 3b The WPT link in [the figure] can be used to transfer WPT signals. That is, the link used to transfer WPT signals can be called the WPT link. This WPT link can also be called an energy transfer link, etc. The specific name of this WPT link is not limited in the embodiments of the present application. Figure 3b In [the figure], AMP downlink (DL) refers to the downlink from the AP to the AMP STA. AMP uplink (UL) refers to the uplink from the AMP STA to the AP. This AMP DL or AMP UL can also be called a communication link based on AMP.

[0179] The WPT link and the communication link (or data link) shown in the embodiments of the present application are distinguished from a functional perspective. In specific implementations, the frequency bands supported by these two types of links can be the same or different. This communication link can belong to a WLAN link. As an example, the WPT link may not belong to a WLAN link. As another example, this WPT link may also belong to a WLAN link. The embodiments of the present application do not limit whether the WPT link belongs to a WLAN link. Exemplarily, a WLAN link can include a P2P link. The WLAN link shown in the embodiments of the present application can be one of the following links: P2P link, AMP UL, AMP DL, UL, or DL.

[0180] Exemplarily, the AP and the AMP STA can communicate via a communication link. For example, AMP DL or AMP UL can support the 2.4 GHz frequency band, or a frequency band below 1 GHz (Sub-1 GHz). The AP can also provide a WPT signal to 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 of type A or type B, the time when the AP sends the WPT signal and the time when the AMP STA communicates can be decoupled. Another example is that if the AMP STA is of type C, 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 for energy harvesting before communicating.

[0181] 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, AMP DL and AMP UL may also support the PPDU format in other Wi-Fi protocols that appear in the future, etc., which are not listed here. Another example is that AMP DL and AMP UL can support the PPDU format in the AMP protocol, such as new PPDU formats that appear in the future. The embodiments of the present application do not limit the PPDU format used for communication between the AP and the AMP STA.

[0182] 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 Figure 3c shown. For the relevant descriptions of the WPT link, AMP DL, and AMP UL, reference can be made to Figure 3b . Figure 3c The relay node in

[0183] can also communicate with the AP via DL or UL. Figure 3c Exemplarily, the relay node and the AMP STA can communicate, and the relay node can provide a WPT signal to the AMP STA. Figure 3c The UL or DL in Figure 3b can support frequency bands such as sub-1 GHz, or 2.4 GHz, or 5 GHz, or 6 GHz, etc., which are not listed one by one here.

[0184] In the embodiments of the present application, AMP UL, AMP DL, UL, and DL are all communication links. The PPDU formats supported by AMP UL and AMP DL may be different from the PPU formats supported by UL and DL. For example, UL and DL may support more frequency bands or more PPDU formats. Another example is that the PPDU format supported by AMP UL and AMP DL may be AMP PPU, and the format of this AMP PPDU is different from the existing PPDU formats in the Wi-Fi protocol. Another example is that the protocols supported by UL and DL are not limited to the Wi-Fi protocol. The differences between the respective communication links will not be listed one by one here.

[0185] The above descriptions of the frequency bands or PPDU formats of AMP UL, AMP DL, UL, and DL also apply to the information transmitted on each link. For the specific information transmitted on different links, reference can be made to the following text, and details will not be elaborated here for the time being.

[0186] Figure 4a It is a schematic diagram of another communication system provided by the embodiments of the present application. Figure 4a The second AMP device and the third AMP device in [diagram] are different devices. The second AMP device is used to provide RF energy for the first AMP device, and the third AMP device is used to communicate with the first AMP device.

[0187] Exemplarily, taking the second AMP device as the exciter, the first AMP device as the AMP STA, and the third AMP device as the AP as an example, as Figure 4b shown. The descriptions of each link can be referred to Figure 3b or Figure 3c , and details will not be elaborated here.

[0188] As Figure 4b shown, the exciter can provide a WPT signal for the AMP STA, and the AP and the AMP STA can communicate. Regarding Figure 4b the descriptions of the frequency bands or PPDU formats supported by each link in [diagram], reference can be made to Figure 3b or Figure 3c , and details will not be elaborated here.

[0189] Figure 3b , Figure 3c and Figure 4b The types of the first AMP device, the second AMP device, and the third AMP device shown in [diagram] are only examples, and do not represent limitations on the types of AP, AMP STA, exciter, and relay node in the embodiments of the present application. At the same time, Figures 3a to 3c , Figures 4a to 4b The number of each device shown is only an example. In specific implementations, the number of devices can be more or less, and the embodiments of the present application do not make limitations in this regard.

[0190] Figures 3a to 3c 、 Figures 4a to 4b Each of the systems shown is only an example. As the standard progresses, other types of topologies may appear in the future. However, any topology that can be applied to the interaction process shown below falls within the protection scope of the embodiments of this application.

[0191] Generally speaking, before the second AMP device provides RF energy to the first AMP device, parameter negotiation can be carried out between the second AMP device and the first AMP device, and then it is decided whether to establish a WPT link.

[0192] In view of this, the embodiments of this application provide a wireless energy transmission method and device, which can improve the interaction process of each device, improve the process of the communication link assisting the WPT link at the protocol level, so that the first AMP device can achieve RF energy collection. Thus, the first AMP device can use the RF energy it collects for communication or sensing, etc. Exemplarily, the first AMP device can also store electrical energy.

[0193] Figure 5a It is a schematic diagram of the interaction stage of a wireless energy transmission method provided by the embodiments of this application.

[0194] As an example, in the case where the 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 parameter negotiation, etc. At this time, the third AMP device shown below Figure 5a and the second AMP device can be the same device, such as Figure 5b or Figure 5c . Figure 5b is a schematic flow diagram of the wireless energy transmission method shown by taking Figure 3b as an example; Figure 5c is a schematic flow diagram of the wireless energy transmission method shown by taking Figure 3c as an example.

[0195] As another example, in the case where the second AMP device (such as Figure 4a or Figure 4b ) cannot communicate with the first AMP device, the third AMP device can interact with the first AMP device. For example, the parameters negotiated between the third AMP device and the first AMP device can include the parameters of the second AMP device. At this time, the third AMP device shown below Figure 5a and the second AMP device can be different devices, such as Figure 5d . Figure 5d is a schematic flow diagram of the wireless energy transmission method shown by taking Figure 4bSchematic flowchart of the illustrated wireless energy transfer method.

[0196] Regarding Figure 5b this, the AP can be associated with the AMP STA, and communication can be carried out between the AP and the AMP STA through a WLAN link. Regarding Figure 5c this, the relay node provides RF energy to the AMP STA. For example, communication can be carried out between the AMP STA and the relay node through a P2P link. If an association has been established between the relay node and the AP, and a P2P link has been established between the relay node and the AMP STA. Regarding Figure 5d this, an association has been established between the exciter and the AP. For example, the exciter has informed the AP of its own capability information. The AP can be associated with the AMP STA. The embodiments of the present application do not limit the method for establishing an association or the method for establishing a P2P link. Regarding Figures 5b to 5c the description of Figure 5a can refer to

[0197] As Figure 5a shown, the interaction stage of the wireless energy transfer method provided by the present application includes at least one of the following stages. It should be understood that each of the following stages can interact with each other or can be implemented independently of each other:

[0198] 501. WPT Capability Exchange stage.

[0199] Exemplarily, in the WPT Capability Exchange stage, the first AMP device can indicate its capabilities to the third AMP device. For example, the first AMP device can send the first capability indication information to the third AMP device. The first capability indication information can be used to indicate the capability information of the first AMP device to receive WPT signals. Or, the first capability indication information is used to indicate the capability information of the first AMP device for wireless energy transfer. Or, the first capability indication information can be used to indicate the capability information of the first AMP device related to receiving WPT signals. Or, the first capability indication information can be used to indicate to the third AMP device the capability information of the first AMP device to receive WPT signals.

[0200] As an example, as Figure 5b and Figure 5d shown, the AMP STA can send the first capability indication information to the AP, and the AP receives the first capability indication information. The first capability indication information can be the capability information of the AMP STA indicating to the AP its ability to receive WPT signals. As another example, as Figure 5cAs shown, the AMP STA can send first capability indication information to a relay node, and the relay node receives the first capability indication information. The first capability indication information can be the capability information of the AMP STA for receiving WPT signals indicated by the AMP STA to the relay node. For the specific content of the first capability indication information, reference can also be made to Figure 6 , which will not be elaborated here for now.

[0201] Exemplarily, in the WPT capability interaction phase, a third AMP device can indicate the capability of a second AMP device to a first AMP device. For example, the third AMP device can send second capability indication information to the first AMP device. The second capability indication information can be used to indicate the capability information of the second AMP device for sending WPT signals. Or, the second capability indication information is used to indicate the capability information of the second AMP device for performing wireless energy transfer. Or, the second capability indication information can be used to indicate the capability information of the second AMP device related to sending WPT signals. Or, the second capability indication information can be used to indicate to the first AMP device the capability information of the second AMP device for sending WPT signals.

[0202] As an example, as Figure 5b shown, the AP can send second capability indication information to the AMP STA, and the AMP STA receives the second capability indication information. The second capability indication information can be the capability information of the AP for sending WPT signals indicated by the AP to the AMP STA. As another example, as Figure 5c shown, the relay node can send second capability indication information to the AMP STA, and the AMP STA receives the second capability indication information. The second capability indication information can be the capability information of the relay node for sending WPT signals indicated by the relay node to the AMP STA. As yet another example, as Figure 5d shown, 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 can be the capability information of the exciter for sending WPT signals indicated by the AP to the AMP STA. For the specific content of the second capability indication information, reference can also be made to Figure 6 , which will not be elaborated here for now.

[0203] In the WPT capability interaction phase, the step regarding the first capability indication information can be optional, or the step regarding the second capability indication information can be optional. In the embodiments of the present application, the WPT capability interaction phase can also be referred to as the AMP capability interaction phase or the capability negotiation phase, etc., and no specific limitation is imposed on the specific name of this phase.

[0204] 502. WPT setup phase.

[0205] The WPT establishment phase, i.e., the establishment phase of the WPT process (or also referred to as the WPT procedure), may include, for example, the WPT establishment process. This WPT establishment process is used to prepare for the subsequent WPT process, or this process can be used to determine whether the WPT process can proceed smoothly, or this process can be used to decide whether the subsequent WPT process can be successfully executed. For example, this WPT establishment process can also be referred to as the establishment process of the WPT process or the establishment phase of the WPT process, etc., and will not be listed one by one here.

[0206] As an example, the initiating end of the WPT establishment process can be the first AMP device. For example, the first AMP device initiates the WPT establishment process, and then the third AMP device decides whether the WPT establishment process can be 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 decide whether the WPT establishment process can be successfully established can effectively improve the success rate of establishing the WPT process. As the end requesting RF energy, the first AMP device initiating the WPT establishment process can also improve the efficiency of the second AMP device providing RF energy to the first AMP device, enabling the second AMP device to charge the first AMP device in a timely manner.

[0207] As another example, the initiating end of the WPT establishment process can be the third AMP device. For example, after the third AMP device obtains the capability information of the first AMP device or the second AMP device, it can initiate the WPT establishment process. In this case, for example, the first AMP device can accept this WPT establishment process.

[0208] The following is illustrated by taking the WPT establishment process initiated by the first AMP device as an example, but it should not be construed as a limitation to 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 it is successfully established, and the WPT establishment response in the WPT establishment process initiated by the third AMP device can be the 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 specific implementations, 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. The following descriptions about the WPT establishment request and the WPT establishment response can also be applied to the WPT establishment process initiated by the third AMP device.

[0209] During the WPT establishment phase, the first AMP device and the third AMP device can exchange WPT status information. Such WPT status information can be used to indicate the WPT status to be reported by the first AMP device in the WPT report. Or, such WPT status information can be used to indicate the WPT status that the first AMP device needs to report in the WPT report. Or, such WPT status information can be used to indicate the WPT status to be reported by the first AMP device. The first AMP device can send a WPT setup request including the WPT status information to the third AMP device. After receiving the WPT setup request, the third AMP device can reply with a WPT setup response. Such WPT setup response can be used to indicate whether the WPT process can be successfully established. As Figures 5b to 5d shown, the AMP STA can initiate the WPT establishment process by sending a WPT setup request. The AP or relay node can feedback a WPT setup response. Other descriptions of the WPT setup request and the WPT setup response can also be referred to Figure 12a 、 Figure 12b and Figure 13 , which will not be elaborated here for the time being.

[0210] When the WPT establishment process indicates that the WPT process can be successfully established, the second AMP device can provide RF energy for the first AMP device. For example, the second AMP device can send a WPT signal to the first AMP device.

[0211] As an example, as Figure 5b shown, the AP can send a WPT signal to the AMP STA through the WPT link. Figures 5b to 5d The continuous transmission duration shown refers to the continuous transmission duration of the WPT signal, Figures 5b to 5d which exemplarily shows the continuous transmission duration of the WPT signal. The duration shown in the figure should not be construed as a limitation on the embodiments of the present application. Figures 5b to 5d The process of the second AMP device transmitting the WPT signal shown can be referred to as the WPT process.

[0212] As another example, as Figure 5c shown, the relay node can send a WPT signal to the AMP STA through the WPT link.

[0213] As yet another example, as Figure 5dAs shown, since the ability of the AP to interact with the AMP STA is the ability of the exciter, the exciter provides RF energy for the AMP STA. Therefore, after the WPT establishment phase is completed, the AP can send control information #1 to the exciter. This control information #1 can be included in a control frame, a management frame, or a data frame. For example, this control information #1 can be included in a trigger frame. For example, this control information #1 can be used to control (or trigger or activate) the exciter to send a WPT signal. Or rather, the control information #1 can be used to instruct the exciter to enter the WPT process (or referred to as the WPT procedure). For example, this control information #1 can include 1 bit, and this 1 bit can be used to indicate whether to trigger the exciter to start sending the WPT signal. Another example is that this control information #1 can include 1 bit, and this 1 bit can be used to indicate stopping or starting to send the WPT signal. Another example is that this control information #1 can be included in a data frame or a control frame. For example, this control information #1 can be used to indicate the transmission time of the WPT signal. For example, this control information #1 can indicate the transmission 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. For the specific form of the control information #1, no further enumeration is provided here. Exemplarily, the WPT establishment response shown in the embodiments of this application can also include the above control information #1, or the WPT establishment response and the control information #1 are included in the same trigger frame. For example, the AP can also indicate the transmission time of the WPT signal to the AMP STA or indicate the activation indication of the WPT signal to the AMP STA, etc. The control information shown in the embodiments of this application can also be referred to as WPT control. For example, the control information #1 can be referred to as WPT control #1, the control information #2 can be referred to as WPT control #2, etc. No further enumeration is provided here.

[0214] When the WPT establishment process indicates that the WPT process establishment fails, the second AMP device cannot provide RF energy for the first AMP device. When the current WPT process establishment fails, if the first AMP device and the third AMP device still maintain an association, 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. When 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 execute the WPT capability interaction phase, the WPT establishment phase, etc.

[0215] 503. WPT report phase.

[0216] The WPT reporting phase can be the reporting phase of the WPT process, such as including the WPT reporting process. This WPT reporting process can be used to feedback information in the WPT process, or feedback information during the WPT process. For example, this WPT reporting process can be used to feedback at least one of the WPT status or the WPT power control information.

[0217] As an example, the initiating end of the WPT reporting process can be the third AMP device. For example, the third AMP device can send a WPT report request to the first AMP device (such as Figures 5b to 5d the WPT report request indicated by the dashed line part). This WPT report request can be used to request the WPT status information, etc. of the first AMP device during the energy transfer process. The first AMP device can return a WPT report. For example, the third AMP device can send this WPT report request during the process of the first AMP device receiving the WPT signal, so that the third AMP device can timely 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 the threshold within a certain period in the future according to the temperature or voltage reported by the first AMP device. Another example is that the third AMP device can adjust the transmission power according to the WPT power control information reported by the first AMP device.

[0218] As another example, the initiating end of the WPT reporting 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 does not need to wait for the third AMP device to send a WPT report request, but directly sends a WPT report. For example, the first AMP device can send this WPT report when detecting a WPT alarm or when the charging is full. Thus, the first AMP device can implicitly instruct the third AMP device to control the second AMP device to stop sending the WPT signal (such as Figure 5d shown), or implicitly instruct the second AMP device to stop sending the WPT signal (such as Figure 5b or Figure 5c shown), protect the circuit of the first AMP device, save the resources for transmitting the WPT signal, and reduce the power consumption of the second AMP device. Other descriptions about the WPT report request and the WPT report can refer to Figure 14a and Figure 14b , which will not be elaborated here for the time being.

[0219] 504. The WPT teardown phase.

[0220] The WPT removal phase refers to the situation where the current WPT process needs to be stopped or terminated, which may include the WPT removal process. This WPT removal process may also be referred to as the WPT termination process, etc. The embodiments of this application do not limit the name.

[0221] As an example, when the WPT status indicated by the WPT report in the WPT reporting phase is a preset status, the WPT report may also implicitly indicate that the WPT process is removed. The preset status shown here may include but is not limited to an alarm status or a full charge, etc.

[0222] As another example, the initiating end of the WPT removal process may be the third AMP device. For example, the third AMP device may send a WPT removal (or termination indication, etc.) (such as Figures 5b to 5d the WPT removal indicated by the dashed part). This WPT removal may be used to indicate the removal of the WPT process, or the termination of the WPT process, or the removal of the WPT procedure. The WPT removal process initiated by the third AMP device through the removal indication explicitly indicates that the WPT process is removed.

[0223] For Figure 5d As an example, when the above control information #1 is used to indicate the transmission time of the WPT signal, the exciter may automatically stop sending the WPT signal based on this transmission time. As another example, during or after the WPT removal phase, the AP may send control information #2 to the exciter, and this control information #2 may be included in a control frame or a management frame or a data frame. This control information #2 may be used to control the exciter to stop sending the WPT signal. Exemplarily, this control information #2 may be included in a trigger frame. For example, this control information #2 may include 1 bit, and this 1 bit may be used to indicate whether to trigger the exciter to stop sending the WPT signal. Or rather, this control information #2 may be used to indicate that the exciter stops the WPT procedure (or the WPT process). For example, this control information #2 may include 1 bit, and this 1 bit may be used to indicate to stop sending the WPT signal or start sending the WPT signal. For example, the value of 1 bit in the above control information #1 may be 1 to indicate starting to send the WPT signal, and the value of 1 bit in control information #2 may be 0 to indicate stopping to send the WPT signal. For the description of control information #2, reference may also be made to the description of control information #1, which will not be elaborated here. Exemplarily, control information #2 may also be included in the WPT removal, or the WPT removal and control information #2 may be included in the same trigger frame. For example, the AP may indicate to the AMP STA an instruction to stop transmitting the WPT signal, etc.

[0224] After the current process is removed, if the first AMP device and the third AMP device still 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 removed, 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 execute the WPT capability interaction phase, the WPT establishment phase, etc.

[0225] The embodiments of the present application improve the interaction process involved in WPT, refine the steps to be executed by each device, and thus effectively improve the interaction efficiency between devices.

[0226] The following details each stage involved in the embodiments of the present application.

[0227] Figure 6 is a schematic flowchart of a wireless energy transfer method provided by the embodiments of the present application. As Figure 6 shown, the method includes:

[0228] In a possible implementation manner, Figure 6 the method shown can include step 601:

[0229] 601. The first AMP device sends first capability indication information to the third AMP device. Correspondingly, the third AMP device receives the first capability indication information.

[0230] First, the form of the parameters indicated by the first capability indication information will be introduced, and then the content of the parameters indicated by the first capability indication information will be introduced. For ease of description, in the following when referring to specific examples, the first parameter is used as an example to illustrate the form of the parameters indicated by the first capability indication information, and the description of the indication form of this first parameter is equally applicable to other parameters indicated by the first capability indication information.

[0231] As an example, the first capability indication information can indicate the value of the first parameter in an index manner (or called a mapping relationship). The number of bits occupied by the first parameter can be related to the different values of the first parameter. If the number of bits occupied by the first parameter is m bits, then these m bits can represent 2 m values of the first parameter. m can be a positive integer. For example, if m = 2, then 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 - 3" shown here is in decimal as an example, but it should not be construed as a limitation on the embodiments of the present application. In specific implementations, different values can be represented in binary, which will not be listed one by one here.

[0232] 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. For example, if the number of bits occupied by the first parameter is m bits, then these m bits can represent m values of the first parameter. Each bit can correspond to a value respectively. For example, if the value of a bit is 1, it can represent that the value of the first parameter is the value corresponding to this bit. For example, m = 3 and the bitmap is 010, then the value of the first parameter can be the value corresponding to the bit "1".

[0233] In the embodiments 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. The embodiments of the present application do not limit this. 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 numbers of bits occupied. The embodiments of the present application do not limit this. The indication forms of the following parameters and the number of bits occupied by each field are only examples, and the embodiments of the present application are not limited thereto.

[0234] The following introduces the parameter content indicated by the first capability indication information.

[0235] 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.

[0236] (1A) The frequency band supported by the first AMP device can be used to indicate the frequency band where the WPT signal received by the first AMP device is located, or which frequency band the first AMP device can support to receive the WPT signal, 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 may occupy 2 bits. The relationship between the value of this field and its meaning 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 either Sub-1 GHz or 2.4 GHz (that is, 2 indicates support for both Sub-1 GHz and 2.4 GHz), and 3 is a reserved value. As the standard progresses, subsequent WPT signals may support more frequency bands, and at this time, the number of bits occupied by the WPT frequency support field may be more.

[0237] The relationship between the values and meanings of the fields listed in the embodiments of the present application is only an example and should not be construed as a limitation on the embodiments of the present application. The names of the fields listed in the embodiments of the present application are only examples and should not be construed as a limitation on the embodiments of the present application. Similarly, the number of bits occupied by each field is also an example. With the progress of the standard, the different values supported by each parameter may be more or less, that is, the number of bits occupied by the fields carried by each parameter may also be more or less, etc. The embodiments of the present application do not limit this.

[0238] For example, if the value of the WPT frequency support field is 1 (binary 01), it means that the first AMP device can support receiving WPT signals at 2.4 GHz. Here, it is shown by way of index. For example, it can also be indicated by a bitmap which frequency bands the first AMP device supports. Still taking 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 band, the second bit can be used to indicate whether the first AMP device supports receiving WPT signals in the 2.4 GHz 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 band. Another example, if the WPT frequency support field is 110, it means that the first AMP device can support receiving WPT signals both in the 2.4 GHz band and in the sub-1 GHz band. Other parameters can also be indicated by a bitmap, which will not be listed one by one below.

[0239] In the embodiments of the present application, when the frequency bands supported by the first AMP device and the second AMP device are different, even if the second AMP device sends a WPT signal to the first AMP device, the first AMP device cannot receive the WPT signal. Therefore, in the WPT capability interaction phase, by indicating the frequency bands it supports, the first AMP device can enable the third AMP device to correctly determine whether the first AMP device can successfully receive WPT signals, improving communication efficiency.

[0240] (2A) The bandwidth supported by the first AMP device can be used to indicate the bandwidth of the channel where the WPT signal received by the first AMP device is located, or the channel bandwidth of the WPT signal. Since the link for transmitting 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.

[0241] As an example, the WPT link may have the same channel division as the communication link. For example, the center frequency of the channel bandwidth where the WPT link is located is the same as the center frequency of the channel bandwidth where the communication link is located. As another example, the WPT link may have a different channel division from the communication link. For example, the center frequency of the channel bandwidth where the WPT link is located may be different from the center frequency of the channel bandwidth where the communication link is located.

[0242] For example, the WPT bandwidth field may occupy 3 bits. The relationship between the value of this field and its meaning may be as follows: 0 represents 1 MHz, 1 represents 2 MHz, 2 represents 4 MHz, 3 represents 8 MHz, 4 represents 16 MHz, and 5 to 7 are reserved values. As the standard progresses, the subsequent WPT link may support more frequency bands. At this time, the channel bandwidth division method may also change accordingly. The embodiments of the present application do not limit this.

[0243] In the embodiments of the present application, when 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, in the WPT capability interaction stage, by interacting with the channel bandwidths supported by the first AMP device and the second AMP device respectively, the power stability of the WPT signal can be ensured.

[0244] (3A) The WPT waveform supported by the first AMP device can be used to indicate which modulation method the WPT signal received by the first AMP device is generated by, 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. The relationship between the value of this field and its meaning 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 6-7 are reserved values. For example, if the value of the WPT modulation field is 0, it means that the first AMP device can support the WPT signal modulated by the FMCW modulation method. After receiving the WPT signal, the first AMP device converts it into a DC signal through a rectifier. The modulation method supported by the first AMP device can be one or more of the modulation methods listed above, or can also include other modulation methods that appear later. The embodiments of the present application do not limit this. 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 can support all modulation methods, the WPT modulation field may also not appear in the second capability indication information sent by the second AMP device. That is, the absence of the WPT modulation field default means supporting all modulation methods.

[0245] In the embodiments 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 not be able to convert the received WPT signal into a DC signal through the rectifier, so the WPT signal cannot provide RF energy for the first AMP device.

[0246] Figure 7a It is a schematic diagram of the format of a first capability indication information provided by the embodiments of the present application. Figure 7a The number of bits and the position (or called order) occupied by each field shown are only examples and should not be construed as a limitation to the embodiments of the present application. The same applies to each format shown below for the description of the number of bits and the position.

[0247] Exemplarily, the first capability indication information may be carried in a first capability element, Figure 7b which is a schematic format diagram of a first capability element provided by an embodiment of the present application. As Figure 7b shown, the first capability element may include an element identifier (element ID), a length, an element ID extension, and the first capability indication information. The element identifier 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.

[0248] Exemplarily, a present field ( Figures 7a to 7c not shown) may also be included in the first capability element. The present field 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 that appear in the first capability indication information 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. For example, the first bit may be used to indicate whether a WPT frequency support field appears, the second bit may be used to indicate whether a WPT bandwidth field appears, and the third bit may be used to indicate whether a 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. As shown in the following text Figure 8a or Figure 8b the fields shown by the dotted line may be optional fields.

[0249] Exemplarily, the first capability element may be carried in a first capability frame, Figure 7c which is a schematic format diagram of a first capability frame provided by an embodiment of the present application. As Figure 7c shown, the first capability frame may include a frame control and the first capability element. The frame control field may be used to identify the type of the first capability frame. For example, the type of the first capability frame may be a management frame, a control frame, or a data frame. For other fields in the first capability frame, the embodiments of the present application do not make any limitations.

[0250] 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 frame are not elaborated one by one here.

[0251] Figure 7band Figure 7c Exemplarily, three parameters included in the first capability indication information are shown as follows. As described below, the first capability indication information may also indicate more parameters. When the first capability indication information indicates more parameters, the first capability indication information is also applicable to Figure 7b and Figure 7c the format shown below, which will not be listed one by one hereinafter.

[0252] Furthermore, the first capability indication information may further include at least one of the following: the received power sensitivity of the first AMP device or the type of the first AMP device.

[0253] (4A) The received power sensitivity of the first AMP device can be used to indicate the received power threshold of the first AMP device when receiving a WPT signal, or can indicate the minimum received 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 exceeds the maximum received power that the first AMP device can withstand when transmitting the 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 it exceeds, there will be a problem of circuit breakdown.

[0254] For example, the received power sensitivity of the first AMP device can be carried in the receiver sensitivity field. For example, the receiver sensitivity field may occupy 2 bits. The relationship between the values and meanings of this field can be as follows: 0 represents -20 dBm, 1 represents -30 dBm, 2 represents -45 dBm, and 3 represents -90 dBm. For example, if the value of the receiver sensitivity field is 0, it means that the received power threshold of the first AMP device when receiving a WPT signal is -20 dBm. When the received power of the WPT signal is less than this threshold, the WPT signal cannot excite the first AMP device, or the first AMP device cannot detect the WPT signal. Another example, the relationship between the values and meanings of this field can be as follows: 0 represents 0.01 mW, 1 represents 0.001 mW, 2 represents 0.000031 mW, and 3 represents 1e-9 mW. The values of the receiver sensitivity listed here are only examples and should not be construed as limitations on the embodiments of the present application.

[0255] As above Figure 5aAs shown, during the WPT reporting phase, the first AMP device can also report the WPT status. Therefore, this receiver sensitivity field may not appear. For example, it can be indicated through the WPT report whether the second AMP device increases the transmission power of the WPT signal.

[0256] In the embodiments of the present application, when the received power sensitivity of the first AMP device does not match the transmission power of the second AMP device. For example, when the second AMP device transmits the WPT signal at a certain transmission power, and then the received power of the WPT signal after signal attenuation reaching the first AMP device is less than the received power sensitivity of the first AMP device, it will cause the first AMP device to be unable to detect the WPT signal, thus unable to provide RF energy for the first AMP device. Generally speaking, the higher the received power sensitivity of the first AMP device, the greater the transmission power required by the second AMP device.

[0257] (5A) The type of the first AMP device can be used to indicate that 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. The relationship between the value and meaning of this field can be as follows: 0 indicates type A, which is compatible with traditional Wi-Fi devices; 1 indicates type B, a low-power device that is not compatible with traditional Wi-Fi devices (such as Wi-Fi devices supporting the 802.11b / g / n protocol); 2 indicates type C that supports back reflection, and 3 indicates a reserved value.

[0258] In the embodiments of the present application, different types of devices can correspond to different receiver sensitivities, or different types of devices can indicate the energy storage capacity of the device battery. For example, the first capability indication information can include one of the above receiver sensitivity field and the AMP STA type field. Of course, the first capability indication information can also include both of these fields at the same time.

[0259] Figure 8a It is a schematic diagram of another format of the first capability indication information provided by the embodiments of the present application. Regarding Figure 8a the description of each field in can refer to the above (1A) to (5A), which will not be elaborated here. Similarly, the first capability indication information can also be carried in elements such as Figure 7b shown, or in frames such as Figure 7c shown, which will not be shown one by one here.

[0260] Furthermore, the first capability indication information can further include at least one of the following: the antenna type of the first AMP device or the antenna polarization mode of the first AMP device.

[0261] (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 the WPT signal. 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 values and meanings of this field can be as follows: 0 represents an omnidirectional antenna, 1 represents a directional antenna, 2 represents a smart antenna, where the smart antenna can support both omnidirectional and directional antennas, and 3 is a reserved value. Another example is when the antenna capability of the first AMP STA is weak and there is no support for a smart antenna. At this time, the relationship between the values and meanings of the WPT antenna type field can be as follows: 0 represents an omnidirectional antenna, 1 represents a directional antenna, and 2-3 are reserved values.

[0262] In the embodiments of this application, when different antenna types transmit the same signal, the required power will be different. Therefore, the first AMP device can transmit its antenna type and use this antenna type as a reference for capability information.

[0263] (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 the WPT signal. 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. The relationship between the values and meanings of this field can be as follows: 0 represents linear polarization, 1 represents circular polarization, 2 represents support for both, and 3 is a reserved value.

[0264] In the embodiments of this application, when the antenna type of the first AMP device does not match the antenna type of the second AMP device, for example, the antenna type of the first AMP device is circular polarization and the antenna type of the second AMP device is linear polarization, the transmission efficiency of the WPT signal will be low. Therefore, by interacting with the antenna polarization mode, the transmission efficiency of the WPT signal can be improved.

[0265] Figure 8b This is another schematic diagram of the format of the first capability indication information provided by the embodiments of this application. Regarding Figure 8b The descriptions of each field in can refer to the above (1A)-(7A) and will not be elaborated here. Similarly, this first capability indication information can also be carried in elements such as Figure 7b shown, or in frames such as Figure 7c shown, which will not be shown one by one here.

[0266] In a possible implementation, Figure 6 the method shown in may further include step 602:

[0267] 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.

[0268] For the parameter form indicated by the second capability indication information, reference can be made to the description of the parameter form indicated by the first capability indication information above, which will not be elaborated here.

[0269] The following introduces the parameter content indicated by the second capability indication information.

[0270] The second capability indication information may include 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.

[0271] (1B) The frequency band supported by the second AMP device can be used to indicate the frequency band where the WPT signal sent by the second AMP device is located, or which frequency band the second AMP device can support to send the WPT signal, or indicate the frequency band for transmitting the WPT signal. For example, the frequency band supported by the second AMP device can be carried in the WPT frequency support field. For the description of this field, reference can be made to the above (1A), which will not be shown one by one here.

[0272] (2B) The bandwidth supported by the second AMP device can be used to indicate the bandwidth of the channel where the WPT signal sent by the second AMP device is located, or the channel bandwidth of the WPT signal. For the description of the bandwidth supported by the second AMP device, reference can be made to the above (2A), which will not be shown one by one here.

[0273] (3B) The WPT waveform supported by the second AMP device can be used to indicate the modulation method of the WPT signal sent by the second AMP device. For the description of the WPT waveform supported by the second AMP device, reference can be made to the above (3A), which will not be shown one by one here.

[0274] Figure 9a It is a schematic diagram of the format of a second capability indication information provided by an embodiment of the present application. Figure 9b It is a schematic diagram of the format of a second capability element provided by an embodiment of the present application. Figure 9c It is a schematic diagram of the format of a second capability frame provided by an embodiment of the present application. For example, the second capability frame can be a beacon frame, or a probe response frame, or an association response frame. The second capability element may also include a presence field. For the description of the presence field, reference can be made to Figures 7a to 7c the description, which will not be elaborated here. For the description of Figures 9a to 9c reference can be made to Figures 7a to 7c , or the above (1B) to (3B), which will not be elaborated here.

[0275] Further, 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.

[0276] (4B) Whether the EIRP of the second AMP device is adjustable can be used to indicate whether the transmission power of the second AMP device can be adjusted. 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 may occupy 1 bit. The relationship between the value of this field and its meaning may be as follows: 0 indicates non - support for adjustability, and 1 indicates support for adjustability.

[0277] In the embodiments of the present application, when the EIRP of the second AMP device is adjustable, when the second AMP device learns the type or received power sensitivity of the first AMP device, it can adjust the transmission power of the WPT signal in combination with the receiving ability of the first AMP device, so as to ensure that the first AMP device can detect the WPT signal and enable the first AMP device to complete RF energy harvesting. 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. Thus, whether the first AMP device can detect the WPT signal needs to be determined in combination with the received 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 - mentioned (4A), and will not be shown one by one here.

[0278] (5B) The EIRP of the second AMP device can be used to indicate the transmission power (Txpower) or received power of the second AMP device. The EIRP of the second AMP device can be carried in the WPT EIRP field.

[0279] As an example, when the EIRP of the second AMP device is non-adjustable, the WPT EIRP field can be used to indicate the fixed transmission 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 transmission 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 received power of the second AMP device. If the WPT signal is transmitted at the minimum transmission power and still exceeds the maximum received power of the first AMP device when it reaches the first AMP device, the first AMP device may not initiate a WPT establishment request.

[0280] For example, the WPT EIRP field can occupy 2 bits. The relationship between the values of this field and their meanings can be as follows: 0 represents 1W, 1 represents 2W, 2 represents 3W, and 3 represents 4W. Another example is that the relationship between the values of this field and their meanings can be as follows: 0 represents 0.2W, 1 represents 0.4W, 2 represents 0.6W, and 3 represents 0.8W.

[0281] For the description of (5B), reference can be made to (5A) or (4A), which will not be shown one by one here.

[0282] Figure 10a It is a schematic diagram of another format of the second capability indication information provided by the embodiments of this application. Regarding Figure 10a The descriptions of each field in can refer to the above (1B) to (5B), which will not be elaborated here. Similarly, the second capability indication information can also be carried in elements such as Figure 9b shown, or in frames such as Figure 9c shown, which will not be shown one by one here.

[0283] Furthermore, the second capability indication information can include at least one of the following: the antenna type of the second AMP device or the antenna polarization mode of the second AMP device.

[0284] (6B) The antenna type of the second AMP device can be the same as the antenna type used to indicate that the second AMP device transmits the WPT signal. For example, the antenna type of the second AMP device can be carried in the WPT antenna type field. The description of this field can refer to the above (6A), which will not be shown one by one here.

[0285] (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 the WPT signal. For example, the antenna polarization of the second AMP device can be carried in the WPT antenna polarization field. For the description of this field, reference can be made to the above (7A), which will not be shown one by one here.

[0286] Figure 10b It is a schematic diagram of another format of the second capability indication information provided by the embodiments of the present application. Regarding Figure 10b The descriptions of each field in can refer to the above (1B) to (7B), etc., which will not be elaborated here.

[0287] Furthermore, the second capability indication information may include at least one of the following: the horizontal angle of the antenna of the second AMP device, the downward tilt 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.

[0288] (8B) The horizontal angle of the antenna of the second AMP device can be used to indicate the horizontal angle of the antenna (such as the so-called WPT antenna) used by the second AMP device to transmit the WPT signal. For example, the horizontal angle of the antenna of the second AMP device can be carried in the WPT antenna azimuth field. For example, the WPT antenna azimuth field may occupy 6 bits. The relationship between the value and meaning of this field can be as follows: 0 represents 10°; 1 represents 20°;...; 35 represents 360°; 36 - 63 are reserved. In specific implementation, the actual antenna horizontal angle can be quantified to the above values, and the quantization method can be rounding down, rounding up, rounding, etc. For example, if the actual antenna angle is 21°, it can be quantified to 20° using the rounding method, and the WPT antenna azimuth field can be represented by 1. Another example is that the WPT antenna azimuth field may occupy 9 bits. The relationship between the value and meaning of this field can be as follows: 0 represents 0°; 1 represents 1°;...; 359 represents 359°; 360 - 511 are reserved values. The division method here is only an example and should not be construed as a limitation on the embodiments of the present application.

[0289] In the embodiments of the present application, by indicating the orientation of the antenna, the antenna downtilt angle, the bandwidth of the antenna beam, or the height of the antenna beam to the first AMP device, the second AMP device can enable the first AMP device to know the radiation range of the antenna based on this information. Thus, the first AMP device can know whether it is within the radiation range of the second AMP device. If it is not within the radiation range, the transmission efficiency will be very low, and the first AMP device can refrain from initiating a WPT establishment request. For the description of the antenna downtilt angle, the bandwidth of the antenna beam, and the height of the antenna beam, reference can be made to the following text.

[0290] (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 WPT signals. 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 elevation field. For example, this field can occupy 5 bits. 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. Another example is that this field can occupy 8 bits. 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 construed as a limitation on the embodiments of the present application.

[0291] (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 variability. For example, when the antenna type is a directional antenna, the beam pattern of the second AMP device can be used to indicate whether the antenna supports variability. When the above 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 can appear or can have a specific meaning. For example, the beam pattern of the second AMP device can be carried in the WPT beam pattern changeable field. For example, this field can occupy 1 bit. The relationship between the value and meaning of this field can be as follows: in the directional antenna scenario, 0 represents not supporting variability, and 1 represents supporting variability. When the above WPT antenna type field indicates that the antenna type of the second AMP device is an omnidirectional antenna, this field is a reserved field.

[0292] (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. When 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 field. This field can occupy 4 bits. The relationship between the values and meanings of this field can be as follows: 0 represents 10°, 1 represents 20°, …, 15 represents 160°. For another example, this field can occupy 8 bits. For example, 0 to 159 respectively represent 1° to 160°, 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 construed as a limitation on the embodiments of the present application.

[0293] In the embodiments of the present application, when the number of first AMP devices to be charged is small, the second AMP device can use a narrow beam to send WPT signals. When the number of first AMP devices to be charged is large, the second AMP device can use a wide beam to send WPT signals. Thus, the first AMP devices 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. When the antenna type is a directional antenna, it is the height of the WPT antenna beam. For example, the beam pattern height of the second AMP device can be carried in the WPT beam pattern height field. The design of this field can be the same as that of the WPT beam pattern width, which will not be shown one by one here.

[0294] Figure 10c It is a schematic diagram of another format of the second capability indication information provided by the embodiments of the present application. Regarding Figure 10c The descriptions of each field in can refer to the above (1B) to (12B), etc., and will not be elaborated here.

[0295] The embodiments of the present application do not limit the sequence of steps 601 and 602.

[0296] Optionally, after the capability interaction, the first AMP device initiates a WPT establishment process, such as Figure 6 step 603 shown.

[0297] As a possible implementation, after sending the first capability indication information, the first AMP device can initiate a WPT establishment process. After receiving the first capability indication information, the second AMP device can decide whether to respond to the WPT establishment process based on its own capabilities.

[0298] 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 for the first AMP device in combination with the capability information of the second AMP device.

[0299] As yet another possible implementation, after the first AMP device sends the first capability indication information and receives the second capability indication information, it may initiate a WPT establishment process.

[0300] 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 embodiments of this application refers to the matching of corresponding information, such as whether (1A) and (1B) match as described above, 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.

[0301] For example, if (1A) and (3A) in the first capability indication information all match (1B) and (3B) in the second capability indication information one by one, the first AMP device may initiate a WPT establishment process. Thus, by judging its own capabilities and the capabilities of the second AMP device before initiating the WPT establishment process, the first AMP device can improve the success rate of the WPT establishment process. 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 another example, the first AMP device may determine whether it is within the effective radiation range of the second AMP device, such as judging whether it is within the effective radiation range in combination with (8B) to (12B) above. If it is within the effective radiation range, the first AMP device may initiate a WPT establishment process, thereby realizing ranging or positioning of the second AMP device, etc.

[0302] As an example, when at least one of (1A) and (3A) in the first capability indication information does not match (1B) and (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 rejects the establishment of the WPT process.

[0303] As another example, when all of (1A) to (3A) in the first capability indication information match (1B) to (3B) in the second capability indication information, the first AMP device may send a WPT establishment request, and the third AMP device may 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 received power in (4A) of the first AMP device is relatively high or the (5A) of the first AMP device is an AMP STA of type C, and the maximum transmitted power in (5B) of the third AMP device is relatively low, if the distance between the first AMP device and the third AMP device is relatively far, the third AMP device rejects the establishment of the WPT link. If the distance between the first AMP device and the third AMP device is relatively close, the third AMP device accepts the establishment of the WPT link.

[0304] As yet another example, when all of (1A) to (5A) in the first capability indication information and (1B) to (5B) in the second capability indication information satisfy the condition that the first AMP device can send a WPT establishment request, the first AMP device sends a WPT establishment request, and the third AMP device may switch its type and polarization mode according to (6A) to (7A) in the first capability indication information. For example, if an AMP STA only supports circular polarization, and an AP can support circular polarization and can support linear polarization, then in the subsequent WPT process, the AP can select circular polarization to transmit the WPT signal. That is to say, the third AMP device can combine (6B) to (7B) in the second capability indication information to adapt it to the first AMP device; otherwise, the third AMP device may reject the establishment of the WPT link.

[0305] As yet another example, when the first AMP device determines according to (8B) to (12B) in the second capability indication information that it is not within the effective radiation range of the second AMP device, the first AMP device may not send a WPT establishment request. Of course, since the first AMP device needs to determine whether it is within the effective radiation range of the second AMP device, the first AMP device requires relatively strong computing capabilities (such as ranging). If the first AMP device does not have this capability (for example, an AMP STA of type A may have this capability, while an AMP STA of type B and type C may not have this capability), then the first AMP device may not determine whether it is within the effective radiation range of the second AMP device, such as directly sending a WPT establishment request.

[0306] For the description of the WPT establishment process, reference can be made to the following text, which will not be elaborated here.

[0307] In the embodiments of the present application, the first AMP device can enable the second AMP device to effectively combine whether the ability information of the first AMP device responds to the WPT establishment process by indicating its own ability information to the second AMP device, which not only improves the interaction process in the AMP field but also improves the interaction efficiency.

[0308] The following introduces five new types of frames involved in the embodiments of the present application.

[0309] The WPT establishment phase, WPT reporting phase, and WPT disconnection phase shown in the specific process of the above wireless energy transfer involve five new types of frames, namely WPT establishment request, WPT establishment response, WPT reporting request, WPT report, and WPT disconnection.

[0310] To be compatible with the existing Wi-Fi protocol, the five new types of frames defined in the embodiments of the present application can be extended through the action frames of the existing Wi-Fi protocol. Figure 11a It is the action field format of the existing Wi-Fi protocol action frame, including a category field and a specific action details field. The category field is used to indicate the category or type to which the action frame belongs, and the specific action field is used to indicate the specific action name. Table 1 gives the specific definitions of the category fields of the action frames in the existing Wi-Fi protocol, where 0 to 127 have been allocated and 128 to 255 are not allocated.

[0311] Table 1 Definition of the category field of the action frame in the Wi-Fi protocol

[0312] Field value Category 0 Spectrum Management 1 QoS 2 Reserved value … … 127 Vendor-specific 128-255 Unallocated

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

[0314] Table 2 Value of the category field of the WPT action frame

[0315] Field value Category 128 WPT

[0316] The embodiments of the present application define a specific action field, which can also be called the WPT action field, to distinguish the five new types of frames defined above, such as Figure 11bAs shown. In Table 3, the WPT action field is represented by 8 bits. When its value is 0, it represents a WPT establishment request; 1 represents a WPT establishment response; 2 represents a WPT report request; 3 represents a WPT report; 4 represents a WPT disconnection; and the remaining values are reserved values. The above is only an example. The number of bits used to represent the WPT action field and the order of the WPT action field definition are not limited in the embodiments of this application. Additionally, in specific implementations, according to actual scenario requirements, the embodiments of this application can also define some new message types. For example, in the embodiments of this application, only 2 bits are used to represent the WPT action field, where 0 represents a WPT establishment request, 1 represents a WPT establishment response, 2 represents a WPT report, and 3 represents a WPT disconnection.

[0317] Table 3 Definition of WPT Action Field

[0318] WPT Action Field Description 0 WPT Establishment Request 1 WPT Establishment Response 2 WPT Report Request 3 WPT Report 4 WPT Dismantling 5-255 Reserved

[0319] The following introduces the WPT establishment request and WPT establishment response involved in the embodiments of this application.

[0320] 1) WPT Establishment Request

[0321] The WPT establishment request includes at least one of the following fields: category field, WPT action field, WPT establishment parameter field, and WPT status control field. Among them, the category field indicates that the category of the WPT establishment request is WPT category information; the WPT action field indicates that the current action type is a WPT establishment request; the WPT establishment parameter field indicates the parameters used for WPT link establishment; the WPT status control field indicates whether, in the reporting stage, the first AMP device will report the DC voltage at the output of the rectifier, whether it will report the voltage of the energy storage device, whether it will report the power received, and whether it will report the temperature.

[0322] Exemplarily, according to Table 2 and Table 3 above, in the WPT establishment request, the value of the category field can be 128, and the value of the WPT action field can be 0.

[0323] The WPT establishment parameter field can include at least one of the following fields: WPT frequency range field, WPT modulation field, and WPT duration field; among them, the WPT frequency range field indicates the frequency range used for the WPT process, the WPT modulation field indicates the modulation method used for the WPT process, and the WPT duration field indicates the duration length of the WPT process. As Figure 12aAs shown, the WPT frequency range field can be represented by 2 bytes. The first byte represents the operating class, and the second byte represents the channel number. For example, when the operating class value is 12 and the channel number value is 1, it means the WPT process uses a frequency range with a center frequency of 2412 MHz and a bandwidth of 20 MHz; when the operating class value is 12 and the channel number value is 2, it means 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 by 3 bytes. The first 2 bytes represent the starting frequency, and the third byte represents the bandwidth. For example, when the starting frequency value is 2417 and the bandwidth value is 20, it means 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 methods, and the remaining bits are reserved. Set the corresponding bit of the selected modulation method to 1 and the remaining bits to 0 to represent the modulation method used in the WPT process. For example, the 3 bits in 1 byte respectively correspond to the FMCW, DSSS, and FHSS modulation methods, and a value of "010" means the WPT process uses the DSSS modulation method. The WPT duration field can use different values in 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 are only examples, and the embodiments of the present application do not limit the order of the above fields, the byte length, value range, value unit, etc. of each field.

[0324] The WPT status control field can be represented by 8 bits, as Figure 12b shown. Figure 12b In it, the WPT status control field is represented by 8 bits, and 4 of them represent 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 received power, and the temperature. Each bit corresponds to a parameter. When its value is 0, it means not reporting this parameter, and 1 means reporting this parameter. 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 are only examples, and the embodiments of the present application do not limit the number of parameters of the WPT status, the parameter order, and the specific parameters, nor do they limit the number of bits representing the WPT status control field and whether it corresponds to the parameters one by one.

[0325] 2) WPT establishment response

[0326] The WPT establishment response 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. Among them, the category field is used to indicate that the category of the WPT establishment response is WPT category information, and the WPT action field indicates that the current action type is a WPT establishment response; the status code field is used to indicate whether the WPT link establishment is successful; the WPT status control field indicates whether, in the reporting stage, the first AMP device is to report the DC voltage output by the rectifier, whether to report the voltage of the energy storage, whether to report the received power, and whether to report the temperature.

[0327] Exemplarily, according to Table 2 and Table 3 above, in the WPT establishment response, the value of the category field can be 128, and the value of the WPT action field can be 1.

[0328] The encoded status field can be extended using the status code field in the existing Wi-Fi protocol. In the existing Wi-Fi protocol, the status code field is used to indicate whether the requested operation is successful. Table 4 gives the specific definitions of the status code field in the existing Wi-Fi protocol, where 0 to 129 have been assigned, and 130 to 65535 are reserved values.

[0329] Table 4 Definition of the Encoded Status Field in the Wi-Fi Protocol

[0330]

[0331]

[0332] In the embodiments of the present application, the status code field value of 0 can be used to indicate that the WPT link establishment is successful. At the same time, a newly defined value of 130 indicates that the WPT link establishment is successful, and the WPT establishment response carries the WPT status control field; the newly defined value of 131 indicates that the WPT link establishment fails, as shown in Table 5. In the embodiments of the present application, the status code field value of 0 can also be used to indicate that the WPT link establishment is successful, and the newly defined value of 130 indicates that the WPT link establishment fails, as shown in Table 6. The above are only examples, and the embodiments of the present application do not limit the format of the status code field, as long as it can indicate whether the WPT link establishment is successful.

[0333] Table 5 Example 1 of the Definition of the Encoded Status Field in the WPT Establishment Response

[0334]

[0335] Table 6 Example 2 of the Definition of the Encoded Status Field in the WPT Establishment Response

[0336] Status Code Value Name Description 0 Success WPT Link Establishment Success 130 Failure WPT Link Establishment Failure

[0337] The format of the WPT establishment parameter field can be consistent with the WPT establishment parameter field in the WPT establishment request, such as Figure 12a as shown.

[0338] The format of the WPT status control field in the WPT establishment response can be consistent with the WPT status control field in the WPT establishment request, and the parameters required to be reported are subsets of it, such as Figure 13 as shown. Exemplarily, Figure 13 in, the WPT establishment request uses 4 bits to represent the WPT status control field, each bit corresponding to a parameter, 1 indicating reporting and 0 indicating not reporting; the 4-bit value of the WPT status control field in the WPT establishment request is "1110", indicating that the first AMP device will report the DC voltage output by the rectifier, the voltage of the energy storage, and the received power; the WPT establishment response also uses 4 bits to represent the WPT status control field, and its value is "1100", which is a subset of the WPT status control field "1110" in the WPT establishment 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. The above is only an example, and the specific format of the WPT status control field is not limited.

[0339] If the WPT link establishment fails, it means that the second AMP device cannot provide wireless energy for the first AMP device. If the WPT link establishment is successful, it means that the second AMP device provides wireless energy for the first AMP device and enters the WPT process.

[0340] The following introduces the WPT report request and WPT report involved in the embodiments of the present application.

[0341] 3) WPT report request

[0342] The WPT report request includes at least one of the following fields: category field, WPT action field, WPT status control field. Among them, the category field is used to indicate that the category of the WPT report request is WPT category information; the WPT action field indicates that the current action type is a WPT report request; the WPT status control field indicates whether the first AMP device is to report the DC voltage output by the rectifier, whether to report the voltage of the energy storage, whether to report the received power, and whether to report the temperature during the reporting stage.

[0343] Exemplarily, according to Table 2 and Table 3 above, in the WPT report request, the category field can take a value of 128, and the WPT action field can take a value of 2.

[0344] The format of the WPT status control field can be consistent with the WPT status control field in the WPT establishment request, and the parameters required to be reported are subsets of it, such as Figure 13 as shown. Exemplarily, Figure 13Among them, the WPT establishment request uses 4 bits to represent the WPT status control field, 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 establishment request is "1110", indicating that the first AMP device will report the DC voltage output by the rectifier, the voltage of the energy storage, and the received power; the WPT report request also uses 4 bits to represent the WPT status control field, and its value is "1000", which is a subset of the WPT status control field "1110" in the WPT establishment request, indicating that the first AMP device is required to report the DC voltage output by the rectifier. The above is only an example, and the embodiments of the present application do not limit the specific format of the WPT status control field.

[0345] 4) WPT Report

[0346] The WPT report includes at least one of the following fields: category field, WPT action field, WPT energy control field, WPT status control field, WPT status information. Among them, the category field is used to indicate that the category of the WPT is WPT category information, and the WPT action field indicates that the current action type is a WPT report; the WPT energy control field is used to indicate the WPT energy control information reported by the first AMP device, and the WPT energy control information includes at least one of the following information: 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 there is a self-protection mechanism; the WPT status control field is used to indicate whether the first AMP device will report the DC voltage output by the rectifier, whether it will report the voltage of the energy storage, the received power, and whether it will report the temperature during the reporting phase; the WPT status information is used to indicate the WPT status information reported by the first AMP device, and the WPT status information includes at least one of the following status information: the DC voltage output by the rectifier, the voltage of the energy storage, the received power, and the temperature. The WPT status control information indicates the information reported by the WPT status information.

[0347] Exemplarily, according to Table 2 and Table 3 above, in the WPT report, the value of the category field can be 128, and the value of the WPT action field can be 3.

[0348] Exemplarily, the WPT energy control field can be represented by 8 bits, such as Figure 14a shown. Figure 14aAmong them, the urgency level of the energy control information can be represented by 1 bit, where 0 indicates not urgent and 1 indicates not urgent; the received power status can be represented by 3 bits, where 0 indicates that the received power does not reach the minimum received power threshold of the first AMP device, 1 indicates that the received power is between the minimum and maximum received power thresholds, 2 indicates that the received power reaches the maximum received power threshold, 3 indicates that the received power exceeds the first threshold of the maximum power, such as 10% or 20%, 4 indicates that the received power exceeds the second threshold of the maximum power, such as 30% or 50%, 5 indicates that a WPT alarm occurs, 6 indicates that the WPT signal is no longer needed, such as the first AMP device is fully charged, and the remaining values are reserved; whether the voltage is too high can be represented by 1 bit, where 0 indicates that it does not exceed the set voltage threshold and 1 indicates that it exceeds the set voltage threshold; whether the current is too high can be represented by 1 bit, where 0 indicates that it does not exceed the set current threshold and 1 indicates that it exceeds the set current threshold; whether the temperature is too high can be represented by 1 bit, where 0 indicates that it does not exceed the set temperature threshold and 1 indicates that it exceeds the set temperature threshold; whether there is a self-protection mechanism can be represented by 1 bit, where 0 indicates that there is no self-protection mechanism and 1 indicates that there is a self-protection mechanism. The above are only examples, and 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.

[0349] The format of the WPT status control field can be consistent with the WPT status control field in the WPT establishment request, such as Figure 12b shown.

[0350] The WPT status information is the specific WPT status information indicated by the WPT status control field. Exemplarily, such as Figure 14bAs shown, the DC voltage output by the rectifier can be represented by 8 bits, where 0 represents 0 mV, 1 represents 1 mV, 2 represents 2 mV, …, 255 represents 255 mV; the DC voltage output by the rectifier can also be represented in another way, still using 8 bits, where 0 represents 0 mV, 1 represents 2 mV, 2 represents 4 mV, …, 255 represents 510 mV. The voltage of the energy storage can be represented by 8 bits, where 0 represents 0 mV, 1 represents 1 mV, 2 represents 2 mV, …, 255 represents 255 mV; the voltage of the energy storage can also be represented in another way, where 0 represents 3 mV, 1 represents 3 mV, 2 represents 6 mV, …, 255 represents 765 mV. The received power can be represented by 8 bits, where 0 represents 0 mW, 1 represents 1 mW, 2 represents 2 mW, …, 255 represents 255 mW; the received power can also be represented in another way, still using 8 bits, where 0 represents 0 mW, 1 represents 4 mW, 2 represents 8 mW, …, 255 represents 1020 mW. The temperature can be represented by 8 bits, where 0 represents -20°, 1 represents -19°, 2 represents -18°, …, 50 represents 30°, and the rest of the values are reserved; the temperature can also be represented in another way, where 0 represents -30°, 1 represents -29°, 2 represents -28°, …, 90 represents 60°, and the rest of the values are reserved. The above parameter representations are only examples, and the embodiments of the present application do not limit the number of parameters, the order of parameters, and the specific representation methods of parameters.

[0351] When the first AMP device detects a WPT alarm or no longer needs the WPT signal, it sets the received power status in the WPT energy control field of the WPT report to 5 or 6, indicating a WPT alarm or no longer needing the WPT. In a specific implementation, if the first AMP device is damaged and cannot receive the WPT signal, or the received power far exceeds the maximum value of the maximum received power, it can set the received power status in the WPT to 5 and send it to the third AMP device; if the first AMP device is fully charged or has completed the transmission task and no longer needs the WPT signal, it can set the received power status in the WPT to 6 and send it to the third AMP device.

[0352] The following introduces the WPT removal involved in the embodiments of the present application.

[0353] 5) WPT removal

[0354] The WPT removal includes at least one of the following fields: a category field and a WPT action field. 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.

[0355] Exemplarily, according to Table 2 and Table 3 above, in the WPT removal, the category field can take the value of 128, and the WPT action field can take the value of 4.

[0356] During the WPT disassembly phase, the first AMP device receives the WPT disassembly, instructs the second AMP device to stop the WPT process, and the first AMP device sends an ACK to the third AMP device, indicating agreement to stop the WPT process.

[0357] During the WPT disassembly phase, the third AMP device receives the ACK, indicating that the first AMP device agrees to stop the WPT process, and the third AMP device stops the WPT process.

[0358] The specific interaction process of the embodiments of the present application will be introduced below in combination with the above-given example topology and five new types of frames. The WPT capability interaction phase is not involved in the interaction process shown below. For the description of the WPT capability interaction phase, reference can be made to the above, and details will not be elaborated here.

[0359] With Figures 5a to 5dTake the following as an example. First, during the WPT establishment phase, the first AMP device sends a WPT establishment request to the third AMP device, requesting to establish a WPT link. The third AMP device sends a WPT establishment response to the first AMP device, which is used to indicate whether the WPT link establishment is successful. If the WPT link establishment fails, it means that the second AMP device cannot provide wireless energy transmission for the first AMP device, that is, it cannot provide the WPT signal for RF energy harvesting. If the WPT link establishment is successful, the WPT process is entered. For example, the second AMP device can send a WPT signal to the first AMP device, and the first AMP device can perform RF energy harvesting based on this WPT signal. During the WPT reporting phase, the first AMP device can actively or passively report the WPT status information to the third AMP device. For example, the third AMP device can send a WPT reporting request to the first AMP device, asking the first AMP device to report the WPT status information. The first AMP device sends a WPT report, which is used to report the WPT status information. This is the passive reporting method. Another example is that the first AMP device can actively send a WPT report to the third AMP device to report the WPT status information, especially when the first AMP device has a WPT alarm or no longer needs the WPT signal. According to the reported WPT status information, when the third AMP device finds that the first AMP device has a WPT alarm or no longer needs the WPT signal, it can enter the WPT disconnection phase. During the WPT disconnection phase, the third AMP device can stop the WPT process in an implicit or explicit manner. When the WPT report received by the third AMP device indicates a WPT alarm or no longer needs the WPT signal, 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 the WPT signal according to the received WPT report, it sends a WPT disconnection, indicating that the WPT process needs to be stopped. The first AMP device sends an ACK, indicating that it has successfully received the WPT disconnection. The third AMP device triggers (or controls) the second AMP device to stop the WPT process, that is, to stop sending the WPT signal to the first AMP device.

[0360] The above specific process of wireless energy transmission is only an example. In specific implementations, there may be other interaction processes, such as the WPT capability interaction phase. There may also be no clear WPT reporting phase or WPT disconnection phase. The embodiments of this application do not limit this. Any interaction process that can be applied to the above-mentioned phases belongs to the protection scope of the embodiments of this application.

[0361] According to Figure 3bIn the shown topology structure, AMP STA is the first AMP device, and AMP AP is the second AMP device. AMP AP can not only provide wireless energy for AMP STA, but also communicate with AMP STA through AMP. The specific process of its wireless energy transmission is as Figure 5b shown.

[0362] As the initiator of WPT establishment, AMP STA sends a WPT establishment request to AMP AP to request the establishment of a WPT link.

[0363] The WPT establishment 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 category of the WPT establishment request is WPT category information, the WPT action field indicates that the current action type is a WPT establishment request; the WPT status control field indicates that in the reporting stage, whether AMP STA will report the DC voltage at the output of the rectifier, whether it will report the voltage of the energy storage device, whether it will report the received power, and whether it will report the temperature. The setting of the category field can refer to Table 2, the setting of the WPT action type field can refer to Table 3, and the setting of the WPT status control field can refer to Figure 12b .

[0364] AMP AP receives the WPT establishment request and feeds back a WPT establishment response to AMP STA to indicate whether the WPT link establishment is successful. If the WPT establishment fails, it means that AMP AP cannot provide wireless energy for AMP STA. If the WPT establishment is successful, the WPT process is entered. This WPT process can be the process of AMP AP transmitting a WPT signal to AMP STA.

[0365] The WPT establishment 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 is used to indicate that the category of the WPT establishment response is WPT category information, the WPT action field indicates that the current action type is a WPT establishment response; the status code field is used to indicate whether the WPT link establishment is successful; the WPT status control field indicates that in the reporting stage, whether AMP STA will report the DC voltage at the output of the rectifier, whether it will report the voltage of the energy storage device, whether it will report the received power, and whether it will report the temperature. The setting of the category field can refer to Table 2, the setting of the WPT action type field can refer to Table 3, the setting of the status code field can refer to Table 5 or Table 6, and the setting of the WPT status control field can refer to Figure 13 .

[0366] During the WPT reporting phase, the AMP AP can send a WPT report request to the AMP STA, requesting the AMP STA to report the WPT status information.

[0367] 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 is used to indicate that the category of the WPT report request is WPT category information; the WPT action field indicates that the current action type is a WPT report request; the WPT status control field indicates whether, during the reporting phase, the AMP STA is to report the DC voltage output by the rectifier, whether to report the voltage of the energy storage, whether to report the received power, and whether to report the temperature. The setting of the category field can be referred to Table 2, the setting of the WPT action type field can be referred to Table 3, and the setting of the WPT status control field can be referred to Figure 13 .

[0368] The AMP STA receives the WPT report request and sends a WPT report to the AMP AP, reporting the WPT status information.

[0369] 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 is used to indicate that the category of the WPT is WPT category information, and the WPT action field indicates that the current action type is a WPT report; the WPT energy control field is used to indicate the WPT energy control information reported by the AMP STA, and the WPT energy control information includes at least one of the following information: 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 there is a self-protection mechanism; the WPT status control field is used to indicate whether, during the reporting phase, the AMP STA will report the DC voltage output by the rectifier, whether it will report the voltage of the energy storage, the received power, and whether it will report the temperature; the WPT status information is used to indicate the WPT status information reported by the AMP STA, and the WPT status information includes at least one of the following status information: the DC voltage output by the rectifier, the voltage of the energy storage, the received power, and the temperature. The WPT status control information indicates the information reported by the WPT status information. The setting of the category field can be referred to Table 2, the setting of the WPT action type field can be referred to Table 3, the setting of the WPT energy control field can be referred to Figure 14a , and the setting of the WPT status control field can be referred to Figure 13 , and the setting of the WPT status information can be referred to Figure 14b .

[0370] The above is the passive report of the AMP STA. The AMP STA can also actively report by sending a WPT report to the AMP AP. Especially when a WPT alarm occurs at the AMP STA or the WPT signal is no longer needed, the received power status in the WPT energy control field of the WPT report is set to 5 or 6, indicating that a WPT alarm has occurred or the WPT signal is no longer needed.

[0371] When the AMP AP receives the WPT report indicating that a WPT alarm has occurred at the AMP STA or the WPT signal is no longer needed, the AMP AP stops the WPT process of the AMP STA.

[0372] The above is the implicit process of WPT removal. The AMP AP can also adopt an explicit WPT removal process. Based on the received WPT report, the AMP AP determines that the AMP STA no longer needs the WPT signal. For example, when the AMP STA is about to be fully charged or has completed the transmission task, the AMP AP sends a WPT removal to the AMP STA, indicating that the AMP AP is going to stop the WPT process.

[0373] The WPT removal includes at least the following fields: a category field and a WPT action field. 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. The setting of the category field can refer to Table 2, and the setting of the WPT action type field can refer to Table 3.

[0374] When the AMP STA receives the WPT removal indicating that the AMP AP is going to stop the WPT process, the AMP STA sends an ACK to the AMP AP, indicating agreement to stop the WPT process.

[0375] When the AMP AP receives the ACK indicating that the AMP STA agrees to stop the WPT process, the AMP AP stops the WPT process.

[0376] According to Figure 4b the shown topology, the AMP STA is the first AMP device, the AMP AP is the third AMP device, and the exciter is the second AMP device. The AMP AP communicates with the AMP STA, and the exciter provides RF energy for the AMP STA.

[0377] The AMP communication process between the AMP STA and the AMP AP is the same as the Figure 5b shown process, except for starting and stopping the WPT process, as Figure 5d shown.

[0378] When the AMP AP sends a WPT establishment response indicating that the WPT link is successfully established, the AMP AP sends a WPT control to the exciter (as Figure 5dThe control information #1 shown, indicating the start of the WPT process. The exciter receives the WPT control, starts providing RF energy to the AMP STA, and enters the WPT process.

[0379] When the AMP AP receives a WPT report indicating that a WPT alert has occurred or that the WPT signal is no longer needed, or receives an ACK indicating that the AMP STA has received an indication to stop the WPT process, the AMP AP sends WPT control to the exciter (such as Figure 5d the control information #2 shown), indicating the stop of the WPT process. The exciter receives the WPT control and stops providing RF energy to the AMP STA.

[0380] According to Figure 3c the topology shown, the AMP STA is the first AMP device, and the relay node is the second AMP device. The relay node can not only provide RF energy to the AMP STA but also communicate with the AMP STA via AMP. The specific process of its wireless energy transfer is as Figure 5b shown.

[0381] The AMP device provided by the embodiments of the present application will be introduced below.

[0382] The present application divides the functional modules of the AMP device according to the above method embodiments. For example, each functional module can be corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of a software functional module. It should be noted that the division of modules in the present application is illustrative, only a logical function division, and there may be other division methods in actual implementation. The following will be combined with Figures 15 to 17 to describe in detail the AMP device of the embodiments of the present application.

[0383] Figure 15 is a schematic structural diagram of an AMP device provided by the embodiments of the present application. As Figure 15 shown, 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, etc.

[0384] In some embodiments of the present application, the AMP device can be used to perform the actions executed by the first AMP device in the above method embodiments. At this time, the first AMP device can be the WLAN device itself or a chip or functional module that can be configured in the device, etc. The transceiver module 1502 is used to perform the operations related to the transceiver of the first AMP device in the above method embodiments, and the processing module 1501 is used to perform the operations related to the processing of the first AMP device in the above method embodiments.

[0385] Exemplarily, the processing module 1501 can be used to obtain the first capability indication information; the transceiver module 1502 can be used to send or output the first capability indication information through the WLAN link; the processing module 1501 can also be used to initiate the WPT establishment process based on the first capability indication information.

[0386] Exemplarily, the transceiver module 1502 can also be used to receive or input the second capability indication information. The processing module 1501 can also be used to parse the second capability indication information.

[0387] Exemplarily, the processing module 1501 can also be used to obtain the WPT establishment request; the transceiver module 1502 can also be used to send or output the WPT establishment request through the WLAN link, and receive or input the WPT establishment response.

[0388] Exemplarily, the processing module 1501 can also be used to obtain the WPT report; the transceiver module 1502 can also be used to send or output the WPT link through the WLAN link.

[0389] Exemplarily, the transceiver module 1502 can also be used to receive or input the WPT report request.

[0390] Exemplarily, the transceiver module 1502 can also be used to receive or input the WPT disconnection through the WLAN link; the processing module 1501 can also parse the WPT disconnection.

[0391] Exemplarily, the processing module 1501 can include a generation module or a parsing module, etc. For example, the generation module can be used to generate the various information shown above, and the parsing module can be used to parse the various information received by the first AMP device. Exemplarily, the transceiver module 1502 can include a radio frequency module, an antenna module, etc. Exemplarily, the transceiver module 1502 can include a pin module, etc.

[0392] Multiplexing Figure 15, in some other embodiments of the present application, the AMP device can be used to perform the actions executed by the third AMP device in the above method embodiments. At this time, the AMP device can be the WLAN device itself or a chip or functional module that can be configured in the device, etc. The transceiver module 1502 is used to perform the operations related to receiving and transmitting of the third AMP device in the above method embodiments, and the processing module 1501 is used to perform the operations related to processing of the third AMP in the above method embodiments.

[0393] Exemplarily, the transceiver module 1502 can be used to receive or input the first capability indication information through the WLAN link; the processing module 1501 can be used to respond to the WPT establishment process based on the first capability indication information.

[0394] Exemplarily, the transceiver module 1502 can be used to send or output the second capability indication information through the WLAN link.

[0395] Exemplarily, the transceiver module 1502 can be used to receive or input a WPT establishment request through the WLAN link, and send or output a WPT establishment response.

[0396] Exemplarily, the transceiver module 1502 can also be used to receive or input a WPT report through the WLAN link.

[0397] Exemplarily, the transceiver module 1502 can also be used to send or output a WPT report request through the WLAN link.

[0398] Exemplarily, the transceiver module 1502 can also be used to send or output a WPT tear-down through the WLAN link.

[0399] Exemplarily, the processing module 1501 can include a generation module and a parsing module. For example, the generation module can be used to generate each piece of information shown above, and the parsing module can be used to parse each piece of information received by the third AMP device. Exemplarily, the transceiver module 1502 can include a radio frequency module, an antenna module, etc. Exemplarily, the transceiver module 1502 can include a pin module, etc.

[0400] Optionally, in each of the above embodiments, the AMP device can further include a storage module, and the storage module can be used to store instructions and / or data. The processing module 1501 can read the instructions and / or data in the storage module so that the AMP device can implement the foregoing method embodiments.

[0401] 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.

[0402] 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.

[0403] The above describes the AMP device of the embodiment of the present application, and the following describes the possible product forms of the AMP device. Figure 15 Any product that has the functions of the AMP device described above falls within the scope of protection of the embodiments of the present application. The following description is for illustrative purposes only and does not limit the product form of the AMP device of the embodiments of the present application to this.

[0404] 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). For example, when the above-mentioned AMP device is used to execute the action executed by the first AMP device, the AMP device can be as follows: Figure 1 All shown, or as Figure 1 The part shown is a Wi-Fi subsystem. For the description of the first AMP device, please refer to Figure 1 , which will not be described in detail here.

[0405] In one possible implementation, Figure 15 In the illustrated AMP device, 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.

[0406] Figure 16 This is a schematic diagram of the structure of an AMP device provided in an embodiment of the present application. Figure 16As shown, the AMP device 160 includes one or more processors 1620 and a transceiver 1610.

[0407] In some embodiments of the present application, the AMP device can be used to perform the steps, methods, or functions executed by the above-mentioned first AMP device. For example, the processor 1620 can be used to perform the functions or steps implemented by the processing module 1501 as Figure 15 shown, and the transceiver 1610 can be used to perform the functions or steps implemented by the transceiver module 1502 as Figure 15 shown. Specific descriptions of the processor 1620 and the transceiver 1610 can be referred to Figure 15 or the method embodiments shown above, and will not be elaborated here. In combination with Figure 1 , the processor shown here may include Figure 1 the baseband circuit or radio frequency circuit in the Wi-Fi subsystem as Figure 1 shown. The transceiver may include

[0408] In some other embodiments of the present application, the AMP device is used to perform the steps, methods, or functions executed by the above-mentioned third AMP device. For example, the processor 1620 can be used to perform the functions or steps implemented by the processing module 1501 as Figure 15 shown, and the transceiver 1610 can be used to perform the functions or steps implemented by the transceiver module 1502 as Figure 15 shown. Specific descriptions of the processor 1620 and the transceiver 1610 can be referred to Figure 15 or the method embodiments shown above, and will not be elaborated here.

[0409] Exemplarily, the processing capacity of the processor of the first AMP device can be less than that of the processor of the third AMP device. Descriptions of the processor can also be referred to Figure 1 , and will not be elaborated here.

[0410] In Figure 16 each implementation manner of the AMP device shown, the transceiver may include a receiver and a transmitter. The receiver is used to perform the receiving function (or operation), and the transmitter is used to perform the transmitting function (or operation). And the transceiver is used to communicate with other devices / devices through a transmission medium.

[0411] 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 embodiments of the present application is an indirect coupling or communication connection between AMP devices, units or modules, which can be electrical, mechanical or other forms for information interaction between AMP devices, units or modules. The processor 1620 may cooperate with the memory 1630. The processor 1620 may execute the program instructions stored in the memory 1630. Optionally, at least one of the above one or more memories may be included in the processor.

[0412] In the embodiments of the present application, the specific connection medium between the transceiver 1610, the processor 1620 and the memory 1630 is not limited. In the embodiments of the present application Figure 16 it is shown that the memory 1630, the processor 1620 and the transceiver 1610 are connected through a bus 1640. The bus is represented by a thick line in Figure 16 which. The connection manners between other components are only for illustrative purposes and are not to be construed as limiting. The bus may be divided into an address bus, a data bus, a control bus, etc. For the sake of convenience of representation, Figure 16 only one thick line is used to represent it in which, but it does not mean that there is only one bus or one type of bus.

[0413] 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), a random access memory (RAM), an erasable programmable read-only memory (EPROM), a read-only memory (ROM), or a compact disc read-only memory (CD-ROM), etc. 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 the present application), but is not limited thereto. The memory in the embodiments of the present application may also be a circuit or any other device capable of implementing a storage function for storing program instructions and / or data.

[0414] The processor 1620 is mainly used to process Wi-Fi protocols and communication data, control the entire AMP device, execute software programs, and process the data of software programs. The memory 1630 is mainly used to store software programs and data. The transceiver 1610 may include a control circuit and an antenna. The control circuit is mainly used for the conversion between baseband signals and radio frequency signals and the processing of radio frequency signals. The antenna is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves. The input / output devices, such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users.

[0415] The AMP device shown in the embodiments of the present application may also have Figure 16 more components, etc. The embodiments of the present application do not limit this. The methods executed by the above-mentioned processor and transceiver are only examples. For the specific steps executed by the processor and transceiver, reference may be made to the methods described above.

[0416] In another possible implementation, Figure 15 in the shown AMP device, the processing module 1501 may be one or more logic circuits, and the transceiver module 1502 may be an input / output interface, also referred to as a communication interface, or an interface circuit, or an interface, etc. Or the transceiver module 1502 may also be a sending module and a receiving module. The sending module may be an output interface, and the receiving module may be an input interface. The sending module and the receiving module are integrated into one module, such as an input / output interface. As Figure 17 shown, Figure 17 the shown AMP device includes a logic circuit 1701 and an interface 1702. That is, the above-mentioned processing module 1501 may be implemented by the logic circuit 1701, and the transceiver module 1502 may be implemented by the interface 1702. Among them, 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. Exemplarily, Figure 17 is shown with the above-mentioned AMP device as a chip. The chip includes a logic circuit 1701 and an interface 1702.

[0417] In the embodiments of the present application, the logic circuit and the interface may also be coupled to each other. For the specific connection manner between the logic circuit and the interface, the embodiments of the present application do not limit this. Exemplarily, the logic circuit 1701 may be used to execute the functions or steps implemented by the processing module 1501 as Figure 15 shown, and the interface 1702 may be used to execute the functions or steps implemented by the transceiver module 1502 as Figure 15 shown. For the specific description of the logic circuit 1701 and the interface 1702, reference may be made to Figure 15 or the method embodiments shown above, which will not be elaborated here.

[0418] 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.

[0419] 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.

[0420] 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.

[0421] 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.

[0422] 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.

[0423] 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.

[0424] 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.

[0425] 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.

[0426] 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: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk, and other media that can store program code.

[0427] 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 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 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 via 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, characterized in that 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, characterized in that 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, wherein 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, characterized in that 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 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.

11. The method according to any one of claims 1-10, characterized in that, Initiating the WPT establishment process includes: Sending a WPT establishment request via 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 via 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 via the WLAN link, where the WPT report is used to indicate WPT status information.

13. The method according to claim 12, characterized in that Before sending the WPT report, the method further includes: Receiving a WPT report request via 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 that the WPT signal is no longer needed.

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

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, 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; Responding to the 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, where the second capability indication information is used to indicate the capability information of the second AMP device to send the WPT signal.

18. The method according to claim 17, characterized in that, 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, wherein 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, characterized in that 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, where the WPT establishment response is used to indicate whether the WPT link establishment 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 ambient 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 for inputting and / or outputting 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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