Wireless energy transmission method and communication apparatus

Abstract

Provided in the present application are a wireless energy transmission method and a communication apparatus. In the method, an access network device can obtain location information of a terminal device, and determine, on the basis of the location information of the terminal device, a first weight for sending a wireless energy signal (i.e., a first signal) for energy transmission to the terminal device. The access network device determines the first weight on the basis of the location information of the terminal device, without requiring the terminal device to measure a reference signal; therefore, energy consumption overheads of closed-loop measurement of the reference signal by the terminal device can be reduced. In addition, the first weight is determined on the basis of a second weight and a third weight, wherein the second weight is related to the angle of the terminal device relative to the access network device, and the third weight is related to the distance of the terminal device relative to the access network device; therefore, the first signal sent by means of the first weight can be coherently transmitted, the power of the wireless energy signal received by a receiving end (i.e., the terminal device) can be increased, and energy transmission efficiency can be improved.

Description

Wireless energy transmission method and communication device

[0001] The present application claims priority to the Chinese patent application No. 202410948026.2, filed on July 15, 2024, and entitled "Wireless energy transmission method and communication device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] Embodiments of the present application relate to the field of communication, and in particular, to a wireless energy transmission method and a communication device. BACKGROUND

[0003] Wireless energy transmission is a technology that provides energy supply for terminal devices (e.g., low-power terminal devices) through wireless signals. After receiving electromagnetic wave signals, the terminal device converts the energy carried by the wireless signals into direct current through a rectifier circuit and stores it, so as to provide power for the load module (e.g., communication module, computing module, processing chip, and sensor module in the terminal device) of the terminal device. The main challenge currently faced by wireless energy transmission includes propagation loss. For example, after the wireless signal is emitted from the transmitting antenna, the energy carried by the wireless signal will quickly decrease with the increase of the propagation distance.

[0004] In order to ensure the efficiency of wireless energy transmission, the industry proposes a closed-loop measurement and feedback scheme, so that the wireless energy signal emitted by the access network device (e.g., base station) can be maximized to be received by the terminal device. In this closed-loop measurement and feedback scheme, the terminal device measures the downlink reference signal sent by the access network device, and then the terminal device feeds back the best frequency point obtained by measuring the downlink reference signal to the access network device, and then the access network device sends the wireless energy signal to the terminal device at the frequency point fed back by the terminal device.

[0005] However, the access network device may send reference signals through multiple antennas, and the terminal device needs to complete the measurement of the reference signals sent by each antenna of the access network device to determine the best frequency point. This measurement process introduces additional power consumption and time overhead, resulting in a decrease in the efficiency of wireless energy transmission. SUMMARY

[0006] The present application provides a wireless energy transmission method and a communication device for improving the efficiency of wireless energy transmission.

[0007] In a first aspect, the present application provides a wireless energy transmission method, which can be executed by an access network device or a component (e.g., a processor, a chip or a chip system, etc.) of the access network device. For example, the access network device obtains position information of a terminal device; then, the access network device determines a first weight value for transmitting a first signal based on the position information of the terminal device, the first signal being used for energy transmission to the terminal device, the first weight value being determined based on a second weight value and a third weight value, the second weight value being related to an angle of the terminal device relative to the access network device, and the third weight value being related to a distance of the terminal device relative to the access network device; and then, the access network device transmits the first signal to the terminal device based on the first weight value.

[0008] In this aspect, the access network device can obtain the position information of the terminal device, and determine the first weight value for transmitting the wireless energy signal (i.e., the first signal) for energy transmission to the terminal device based on the position information of the terminal device. Since the access network device determines the first weight value based on the position information of the terminal device, the terminal device does not need to measure the reference signal, and thus the energy consumption cost of the terminal device for closed-loop measurement of the reference signal can be reduced. In addition, since the first weight value is determined based on the first weight value and the second weight value, and the second weight value is related to the angle of the terminal device relative to the access network device, and the third weight value is related to the distance of the terminal device relative to the access network device, the first signal transmitted by the first weight value can realize coherent transmission, and the power of the wireless energy signal received by the receiving end (i.e., the terminal device) can be improved, which is beneficial to improving the energy transmission efficiency.

[0009] In a possible implementation, the angle of the terminal device relative to the access network device is determined based on the position information of the terminal device and the position information of the access network device; and the distance of the terminal device relative to the access network device is determined based on the position information of the terminal device and the position information of the access network device.

[0010] In a possible implementation, the second weight value is also related to the distance between the antennas of the access network device and / or the wavelength corresponding to the frequency point of the first signal. For example, the access network device determines the second weight value based on the angle of the terminal device relative to the access network device, the distance between the antennas of the access network device, and the wavelength corresponding to the frequency point of the first signal.

[0011] For example, the second weight value, the angle of the terminal device relative to the access network device, the distance between the antennas of the access network device, and the wavelength corresponding to the frequency point of the first signal satisfy the following formula 1:

[0012] wherein, is the second weight value, represents the kth frequency (i.e., f kcorresponding to the first signal, N representing the number of antennas of the access network device, N being an integer greater than 1; θ representing the angle of the terminal device relative to the access network device; d representing the distance between the antennas of the access network device; λ k representing the wavelength corresponding to the kth frequency point of the at least two frequency points corresponding to the first signal; φ k representing a fixed value related or unrelated to the kth frequency point of the at least two frequency points; j representing the imaginary unit.

[0013] In this embodiment, by setting the antenna weight (i.e., the second weight), the wireless energy signal transmitted based on the second weight can be aligned with the direction of the terminal device, thereby improving the efficiency of wireless energy transmission.

[0014] In a possible implementation, the first signal corresponds to at least two frequency points; the third weight is further related to the frequency of the at least two frequency points and / or the wavelength of the at least two frequency points. For example, the access network device determines the third weight based on the distance of the terminal device relative to the access network device, the frequency of the at least two frequency points, and the wavelength of the at least two frequency points.

[0015] For example, the third weight, the distance of the terminal device relative to the access network device, the frequency of the at least two frequency points, and the wavelength of the at least two frequency points satisfy the following formula 2:

[0016] wherein, is the third weight, representing the corresponding weight of the signal of the 1st frequency to the signal of the Mth frequency in the signal of the at least two frequency points (i.e., the signal of the M frequency points) transmitted on the ith antenna, M being the number of frequencies transmitted by an antenna, M being an integer greater than 1; t representing time; R i representing the distance of the terminal device relative to the access network device, for example, the distance of the terminal device to the ith antenna of the access network device; f1 representing the frequency of the 1st frequency point of the M frequency points corresponding to the first signal; f M representing the frequency of the Mth frequency point of the M frequency points corresponding to the first signal; λ1 representing the wavelength corresponding to the 1st frequency point of the M frequency points corresponding to the first signal; λ M representing the wavelength corresponding to the Mth frequency point of the M frequency points corresponding to the first signal; representing a fixed value related or unrelated to the ith antenna of the access network device; j representing the imaginary unit.

[0017] In this embodiment, by setting the frequency weight (i.e., the third weight), the gain of high peak to average power ratio (PAPR) is achieved, the rectification efficiency of the wireless signal is improved, and thus the energy transmission efficiency is improved.

[0018] In a possible implementation, the first weight value is determined based on a product of the second weight value and the third weight value.

[0019] In a possible implementation, the specific implementation of the access network device obtaining the location information of the terminal device includes: the access network device receiving the location information of the terminal device from the terminal device; or, the access network device receiving the location information of the terminal device from the core network device.

[0020] For example, in the case that the terminal device has the capability of reporting the location information of the terminal device to the access network device, the access network device obtains the location information of the terminal device from the terminal device; in the case that the access network device is not convenient to obtain the location information of the terminal device from the terminal device, or the terminal device does not report the location information of the terminal device to the access network device, the access network device obtains the location information of the terminal device from the core network device. Since the present embodiment provides multiple implementation manners of the access network device obtaining the location information of the terminal device, it is not only beneficial to ensure that the access network device can obtain the location information of the terminal device, but also beneficial to improve the diversity of the access network device obtaining the location information of the terminal device.

[0021] In a possible implementation, the location information of the terminal device includes a coordinate type of a location where the terminal device is located and a coordinate value of the location where the terminal device is located, and the coordinate type includes a relative coordinate type, an absolute coordinate type, and a coordinate system type.

[0022] In the present embodiment, the location information of the terminal device includes the coordinate type, which is beneficial to the terminal device providing the coordinate value of the appropriate coordinate type on demand, and is beneficial to improving the efficiency of the terminal device reporting the location of the terminal device, or is beneficial to improving the efficiency of the access network device obtaining the location of the terminal device.

[0023] In a possible implementation, before the access network device determines the first weight value for sending the first signal based on the location information of the terminal device, the method further includes: the access network device receiving an energy transmission request from the terminal device, the energy transmission request including first indication information, the first indication information being used to indicate that the access network device is requested to send a wireless energy signal to the terminal device.

[0024] In a possible implementation, the energy transmission request further includes wireless energy transmission amount information and / or wireless energy transmission time information, the wireless energy transmission amount information being used to indicate the size of the wireless energy requested to be transmitted by the terminal device, and the wireless energy transmission time information being used to indicate a time range in which the terminal device can receive the wireless energy signal.

[0025] In this embodiment, the terminal device can provide the access network device with the size of the wireless energy expected by the terminal device and the time range of the transmission expected by the terminal device, so that the access network device transmits energy to the terminal device with reference to the size of the wireless energy and the time range provided by the terminal device, which is beneficial to improving the efficiency of energy transmission from the access network device to the terminal device.

[0026] In a possible implementation, the energy transmission request further includes energy level information of the terminal device, and the energy level information of the terminal device is used to indicate the size of the energy remaining in the terminal device.

[0027] In this embodiment, the terminal device can provide the access network device with the energy level information of the terminal device, so that the access network device determines the size of the wireless energy to be transmitted to the terminal device based on the energy level information of the terminal device, which is beneficial to improving the flexibility of energy transmission from the access network device to the terminal device.

[0028] In a possible implementation, the energy transmission request further includes position information of the terminal device.

[0029] In this embodiment, the terminal device can provide the access network device with the position information of the terminal device through the energy transmission request when requesting the access network device to transmit energy to the terminal device, which is beneficial to the access network device to quickly obtain the accurate position information of the terminal device, and further beneficial to the access network device to determine the first weight value based on the position information of the terminal device.

[0030] In a possible implementation, the method further includes: after the access network device receives the energy level information of the terminal device carried in the energy transmission request, the access network device determines the wireless energy transmission amount information and / or the wireless energy transmission time information based on the energy level information of the terminal device.

[0031] In this embodiment, the access network device can determine the size of the wireless energy to be transmitted to the terminal device and the time range of energy transmission based on the energy level information of the terminal device, which is beneficial to improving the flexibility of energy transmission from the access network device to the terminal device.

[0032] In a possible implementation, the access network device receives the position information of the terminal device from the core network device, including: the access network device sends a location request message to the core network device, the location request message including the identification information of the terminal device; and the access network device receives a location response message from the core network device, the location response message including the position information of the terminal device.

[0033] In this embodiment, the access network device obtains the location information of the terminal device from the core network device, which can save the energy consumption and network time-frequency resources occupied by the terminal device for reporting the location information to the access network device, and improve the security of the terminal device and reduce the risk of leakage of the location information of the terminal device.

[0034] In a second aspect, the present application provides a wireless energy transmission method, which can be executed by a terminal device or a component (for example, a processor, a chip or a chip system, etc.) of the terminal device. Taking the terminal device as an example, the terminal device sends the location information of the terminal device to an access network device, the location information being used by the access network device to determine a first weight value for sending a first signal, the first signal being used for energy transmission to the terminal device, the first weight value being determined based on a second weight value and a third weight value, the second weight value being related to an angle of the terminal device relative to the access network device, and the third weight value being related to a distance of the terminal device relative to the access network device; and then the terminal device receives the first signal from the access network device.

[0035] In this aspect, the terminal device can provide the location information of the terminal device to the access network device, so that the access network device determines the first weight value for sending the wireless energy signal (i.e., the first signal) for energy transmission to the terminal device based on the location information of the terminal device. Since the terminal device does not need to measure the reference signal, the energy consumption of the terminal device for closed-loop measurement of the reference signal can be reduced. In addition, since the first weight value is determined by the access network device based on the first weight value and the second weight value, and the second weight value is related to the angle of the terminal device relative to the access network device, and the third weight value is related to the distance of the terminal device relative to the access network device, the first signal transmitted by the first weight value can realize coherent transmission, which can improve the power of the wireless energy signal received by the receiving end (i.e., the terminal device), and is beneficial to improving the energy transmission efficiency.

[0036] In a possible implementation, the angle of the terminal device relative to the access network device is determined based on the location information of the terminal device and the location information of the access network device; and the distance of the terminal device relative to the access network device is determined based on the location information of the terminal device and the location information of the access network device.

[0037] In a possible implementation, the second weight value is also related to the spacing of the antennas of the access network device and / or the wavelength corresponding to the frequency point of the first signal.

[0038] In a possible implementation, the second weight value, the angle of the terminal device relative to the access network device, the spacing of the antennas of the access network device and the wavelength corresponding to the frequency point of the first signal satisfy the following formula 1:

[0039] wherein, wherein, for the second weight, represents a weight of the N antennas corresponding to the kth frequency (i.e., f k ) of the first signal, N represents a number of antennas of the access network device, N is an integer greater than 1; θ represents an angle of the terminal device relative to the access network device; d represents a distance between the antennas of the access network device; λ k represents a wavelength corresponding to the kth frequency point of the at least two frequency points corresponding to the first signal; φ k represents a fixed value related to or not related to the kth frequency point of the at least two frequency points; j represents an imaginary unit.

[0040] In a possible implementation, the first signal corresponds to the at least two frequency points; the third weight is further related to frequencies of the at least two frequency points and / or wavelengths of the at least two frequency points.

[0041] In a possible implementation, the third weight, the distance of the terminal device relative to the access network device, the frequencies of the at least two frequency points, and the wavelengths of the at least two frequency points satisfy the following formula 2:

[0042] wherein, wherein, for the third weight, represents a weight of the at least two frequency points (i.e., the signals of the M frequency points) sent on the i th antenna from the signal of the 1st frequency to the signal of the Mth frequency, M is a number of frequencies sent by an antenna, M is an integer greater than 1; t represents time; R i represents a distance of the terminal device relative to the access network device, for example, a distance of the terminal device to the i th antenna of the access network device; f1 represents a frequency of the 1st frequency of the M frequency points corresponding to the first signal; f M represents a frequency of the Mth frequency of the M frequency points corresponding to the first signal; λ1 represents a wavelength corresponding to the 1st frequency of the M frequency points corresponding to the first signal; λ M represents a wavelength corresponding to the Mth frequency of the M frequency points corresponding to the first signal; represents a fixed value related to or not related to the i th antenna of the access network device; j represents an imaginary unit.

[0043] In a possible implementation, the first weight is determined based on a product of the second weight and the third weight.

[0044] In a possible implementation, the position information of the terminal device includes a coordinate type of a position where the terminal device is located and a coordinate value of the position where the terminal device is located.

[0045] In a possible implementation, the method further includes: sending, by the terminal device, an energy transmission request to the access network device, the energy transmission request including first indication information, the first indication information being used to indicate a request for the access network device to send a wireless energy signal to the terminal device.

[0046] In a possible implementation, the energy transmission request further comprises wireless energy transmission quantity information and / or wireless energy transmission time information, the wireless energy transmission quantity information is used to indicate the size of wireless energy requested to be transmitted by the terminal device, and the wireless energy transmission time information is used to indicate a time range in which the terminal device can receive the wireless energy signal.

[0047] In a possible implementation, the energy transmission request further comprises energy level information of the terminal device, and the energy level information of the terminal device is used to indicate the size of energy remaining in the terminal device.

[0048] In a possible implementation, the energy transmission request further comprises location information of the terminal device.

[0049] It should be noted that the specific implementation and advantages of the present aspect are similar to those of some of the implementation modes of the first aspect, and details can be referred to the specific implementation and advantages of the first aspect, which will not be repeated here.

[0050] In a third aspect, the present application provides a wireless energy transmission method, which can be executed by a core network device or a component (for example, a processor, a chip or a chip system, etc.) of the core network device. Taking the core network device as an example, the core network device receives a location request message from an access network device, the location request message comprising identification information of a terminal device; and the core network device sends a location response message to the access network device, the location response message comprising location information of the terminal device.

[0051] In a fourth aspect, the present application provides a communication apparatus, which can be the access network device in the foregoing implementation modes, or a chip in the access network device. The communication apparatus can comprise a processing module and a transceiver module. When the communication apparatus is the access network device, the processing module can be a processor, and the transceiver module can be a transceiver; the access network device can further comprise a storage module, which can be a memory; the storage module is used to store instructions, and the processing module executes the instructions stored in the storage module, so that the access network device executes the method in the first aspect or any of the implementation modes of the first aspect. When the communication apparatus is a chip in the access network device, the processing module can be a processor, and the transceiver module can be an input / output interface, a pin or a circuit, etc.; the processing module executes the instructions stored in the storage module, so that the access network device executes the method in the first aspect or any of the implementation modes of the first aspect. The storage module can be a storage module (for example, a register, a cache, etc.) in the chip, or a storage module (for example, a read-only memory, a random access memory, etc.) outside the chip in the access network device.

[0052] In a fifth aspect, an embodiment of the present application provides a communication apparatus, which can be the terminal device in the foregoing embodiments, or a chip in the terminal device. The communication apparatus can include a processing module and a transceiver module. When the communication apparatus is the terminal device, the processing module can be a processor, and the transceiver module can be a transceiver. The terminal device can further include a storage module, which can be a memory. The storage module is configured to store instructions, and the processing module executes the instructions stored in the storage module, so that the terminal device performs the method in the second aspect or any of the implementations of the second aspect. When the communication apparatus is a chip in the terminal device, the processing module can be a processor, and the transceiver module can be an input / output interface, a pin, or a circuit, etc. The processing module executes the instructions stored in the storage module, so that the terminal device performs the method in the second aspect or any of the implementations of the second aspect. The storage module can be a storage module (for example, a register, a cache, etc.) in the chip, or a storage module (for example, a read-only memory, a random access memory, etc.) outside the chip in the terminal device.

[0053] In a sixth aspect, an embodiment of the present application provides a communication apparatus, which can be the core network device in the foregoing embodiments, or a chip in the core network device. The communication apparatus can include a processing module and a transceiver module. When the communication apparatus is the core network device, the processing module can be a processor, and the transceiver module can be a transceiver. The core network device can further include a storage module, which can be a memory. The storage module is configured to store instructions, and the processing module executes the instructions stored in the storage module, so that the core network device performs the method in the third aspect or any of the implementations of the third aspect. When the communication apparatus is a chip in the core network device, the processing module can be a processor, and the transceiver module can be an input / output interface, a pin, or a circuit, etc. The processing module executes the instructions stored in the storage module, so that the core network device performs the method in the third aspect or any of the implementations of the third aspect. The storage module can be a storage module (for example, a register, a cache, etc.) in the chip, or a storage module (for example, a read-only memory, a random access memory, etc.) outside the chip in the core network device.

[0054] In a seventh aspect, the present application provides a communication apparatus, which includes modules, units or means for implementing the methods in the foregoing aspects. The apparatus can be an integrated circuit chip. The integrated circuit chip includes a processor. The processor is coupled with a memory, and the memory is configured to store programs or instructions, which, when executed by the processor, cause the communication apparatus to perform the method as described in any of the implementations of the foregoing aspects.

[0055] In an eighth aspect, an embodiment of the present application provides a computer program product containing instructions which, when executed on a computer, cause the computer to carry out the method as introduced above in any of the respective aspects.

[0056] In a ninth aspect, an embodiment of the present application provides a computer-readable storage medium comprising instructions which, when executed on a computer, cause the computer to carry out the method as introduced above in any of the respective aspects.

[0057] In a tenth aspect, an embodiment of the present application provides a communication system comprising the access network device as introduced above in the first aspect and any of the embodiments of the first aspect, the terminal device as introduced above in the second aspect and any of the embodiments of the second aspect, and the core network device as introduced above in the third aspect and any of the embodiments of the third aspect. BRIEF DESCRIPTION OF DRAWINGS

[0058] Fig. 1 is an example diagram of a system architecture of a wireless energy transmission method provided by the present application;

[0059] Fig. 2 is a flow chart of a wireless energy transmission method provided by the present application;

[0060] Fig. 3 is another flow chart of a wireless energy transmission method provided by the present application;

[0061] Fig. 4 is another flow chart of a wireless energy transmission method provided by the present application;

[0062] Fig. 5 is a schematic diagram of a communication apparatus provided by the present application;

[0063] Fig. 6 is another schematic diagram of a communication apparatus provided by the present application;

[0064] Fig. 7 is another schematic diagram of a communication apparatus provided by the present application. DETAILED DESCRIPTION

[0065] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0066] The terms "first", "second", "third", "fourth" and the like in the description and in the claims of the present application, if any, are used for distinguishing between similar objects talking about the exemplary embodiments and not necessarily for describing a sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and / or embodiments. The terms "comprise", "comprising", "comprises", "include", "including", and "includes" as well as variants such as "comprise", "comprising", "comprises", "include", "including", and "includes" unless otherwise specified, are used synonymously to denote and refer to the inclusion of something missed or other than that which is listed or discussed, for instance, a process, method, object, or apparatus that includes or has other steps, methods, components, elements, items, or parts not specifically and explicitly recited or described.

[0067] It should be understood that the term "and / or" in this text is merely used to describe associated objects in association with each other, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, B exists alone, and A, B can be single or multiple. In addition, the character " / " in this text generally represents that the associated objects before and after are in an "or" relationship. In addition, "at least one of the following" or similar expressions in this text are used to represent any combination of the listed items; for example, at least one of A, B and (or) C can mean that A exists alone, B exists alone, C exists alone, A and B exist together, B and C exist together, A and C exist together, A, B and C exist together, and A, B, C can be single or multiple.

[0068] For the sake of understanding, the system architecture and application scenarios to which the wireless energy transmission method proposed in the present application is applicable will be introduced first as follows:

[0069] The wireless energy transmission method proposed in the present application can be applied to the 5th generation mobile communication technology (5G) system and future communication systems, which are not limited by the present application. As shown in FIG. 1, the communication system includes a terminal device, an access network device and a core network device.

[0070] Terminal device refers to a device with wireless communication function and wireless energy transmission function. For example, the terminal device can communicate with a core network (e.g., a 5th generation core (5GC)) via a radio access network (RAN), and can exchange voice and / or data with the RAN. In addition, the terminal device can also receive a wireless energy signal and convert the wireless energy into electrical energy for storage in the terminal device. It should be understood that the terminal device can also be referred to as a terminal, a user equipment (UE), a wireless terminal device, a mobile terminal (MT) device, a subscriber unit, a subscriber station, a mobile station (MS), a mobile, a remote station, a remote terminal, an access terminal, a user terminal, a user agent, or a user device, etc. For example, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) device, an augmented reality (AR) device, an extended reality (XR) service terminal, a vehicle-mounted terminal, an Internet of Things terminal (e.g., a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc.), etc. It should be understood that the terminal device in the present application can be implemented in any of the above forms, and the present application is not limited.

[0071] An access network device refers to a device or apparatus capable of providing wireless communication function and wireless energy transmission function for a terminal device. Exemplarily, the access network device can be a radio access network (RAN) device (also referred to as a network device or a RAN node) currently serving the terminal device. Currently, some common examples of the access network device are: a node B (NB), an evolved node B (eNB or eNodeB), a node B (gNB) in a 5G new radio (NR) system, a node (for example, an xNodeB) in a future communication system, a transmission reception point (TRP), a transmission measurement function (TMF), a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), and the like. In addition, in a network structure such as a cloud radio access network (CloudRAN) or an open radio access network (ORAN), the access network device can be a device including a centralized unit (CU) (also referred to as a control unit) and / or a distributed unit (DU). The RAN device including the CU and the DU splits the protocol layers of the gNB in the NR system, and the functions of part of the protocol layers are controlled by the CU in a centralized manner, and the functions of the remaining part or all of the protocol layers are distributed in the DUs and controlled by the CU in a centralized manner. The split of the CU and the DU can be performed according to the protocol stack. For example, one possible split manner is to deploy the radio resource control (RRC), the service data adaptation protocol (SDAP), and the packet data convergence protocol (PDCP) layers in the CU, and the remaining radio link control (RLC) layer, the media access control (MAC) layer, and the physical layer (PHY) in the DU.The CU and the DU are connected through an Fl interface, the CU is connected with a core network through an NG interface on behalf of a gNB, and the CU is connected with other gNBs (or other CUs) through an Xn interface on behalf of the gNB. In actual deployment of a RAN device, in addition to the logical gNB composed of the CU and the DU, the RAN device also includes an RU (not shown in the figure). The RU is a hardware unit that contains part of the PHY layer function and / or an antenna device. Optionally, the RU can be configured to be independent of the antenna device (for example, an antenna line device (ALD), which can also be integrated with the antenna device. For example, in a 5G NR system, the aforementioned RU can be an active antenna unit (AAU), that is, a processing unit integrated with a remote radio unit (RRU) (or a remote radio head (RRH)) and an antenna device.

[0072] It should be noted that in actual applications, there can be various ways to deploy the access network device, which are not limited by the present application. For example, in some deployments, the access network device mentioned in the embodiments of the present application can be a device including a CU, or a DU, or a device including a CU and a DU, or a control plane CU node (central unit-control plane (CU-CP)) and a user plane CU node (central unit-user plane (CU-UP)) and a DU node. For example, the network device can include a gNB-CU-CP, a gNB-CU-UP, and a gNB-DU. For another example, in some deployments, a plurality of RAN nodes cooperate to assist a terminal to implement wireless access, and different RAN nodes respectively implement part of the functions of a base station. For example, the RAN node can be a CU, a DU, a CU-CP, a CU-UP, or an RU, etc. The CU and the DU can be separately arranged or can be included in the same network element, for example, the CU and the DU can be included in a BBU. The RU can be included in a radio frequency device or a radio frequency unit, for example, the RU can be included in an RRU, an AAU, or an RRH. For example, the processing unit in the BBU for implementing baseband functions is referred to as a baseband high (BBH) unit, and the processing unit in the RRU / AAU / RRH for implementing baseband functions is referred to as a baseband low (BBL) unit.

[0073] It should also be appreciated that a RAN node can support one or more types of fronthaul interface, respectively, corresponding to DUs and RUs having different functionality. If the fronthaul interface between the DU and RU is common public radio interface (CPRI), the DU is configured to implement one or more of baseband functions, and the RU is configured to implement one or more of radio frequency functions. If the fronthaul interface between the DU and RU is another interface, it offloads some baseband functions for downlink and / or uplink relative to CPRI. For example, for downlink, one or more of precoding, digital beamforming (BF), or inverse fast Fourier transform (IFFT) / add cyclic prefix (CP) is offloaded from the DU to the RU, and for uplink, one or more of digital beamforming (BF), or fast Fourier transform (FFT) / remove cyclic prefix (CP) is offloaded from the DU to the RU. In one possible implementation, the interface can be enhanced common public radio interface (eCPRI). Under the eCPRI architecture, the split between the DU and the RU is different, corresponding to different categories (Cat) of eCPRI, such as eCPRI Cat A, B, C, D, E, F. Taking eCPRI Cat A as an example, for downlink transmission, the split is at layer mapping, the DU is configured to implement one or more of layer mapping and preceding functions (i.e., one or more of encoding, rate matching, scrambling, modulation, layer mapping), and other functions after layer mapping (e.g., one or more of resource element (RE) mapping, digital beamforming (BF), or inverse fast Fourier transform (IFFT) / add cyclic prefix (CP)) are offloaded to the RU.For uplink transmission, with de-RE mapping as the cut, the DU is configured to implement one or more functions of de-mapping and before (i.e., one or more functions of decoding, de-rate matching, de-scrambling, de-modulation, inverse discrete Fourier transform (IDFT), channel equalization, de-RE mapping) and other functions after de-mapping (e.g., one or more of digital BF or fast Fourier transform (FFT) / de-CP) are implemented in the RU. It can be understood that the functional description of the DU and the RU corresponding to various types of eCPRI can refer to the eCPRI protocol, which is not described here.

[0074] It should be understood that the access network device in the present application can be implemented in any of the above forms, and the present application is not limited.

[0075] A core network device refers to a device in a core network (CN) that provides service support for a terminal device. The core network device is connected with an access network device through an interface (for example, a next generation (NG) interface, etc.) between the core network device and the access network device, and can provide the access network device with information about the terminal device (for example, subscription data of the terminal device, authentication information of the terminal device, or location information of the terminal device, etc.). Currently, some common examples of the core network device are: a location management function (LMF) entity, an access and mobility management function (AMF) entity, a session management function (SMF) entity, a user plane function (UPF) entity, and the like, which are not listed one by one here. Among them, the AMF entity and the SMF entity are also referred to as control plane entities of the core network, which are used to perform functions related to the control plane of the core network. For example, the AMF entity can be responsible for access management and mobility management of the terminal device; the SMF entity can be responsible for session management, such as session establishment of a user, etc. The UPF entity is also referred to as a user plane entity of the core network, which is used to perform functions related to the user plane of the core network. For example, the UPF entity is mainly responsible for connecting an external network and transmitting service data. The LMF entity is used to manage the location information of the terminal device. It should be noted that the entity in this application can also be referred to as a network element or a functional entity. For example, the LMF entity can also be referred to as an LMF network element or an LMF functional entity; for example, the AMF entity can also be referred to as an AMF network element or an AMF functional entity; for example, the SMF entity can also be referred to as an SMF network element or an SMF functional entity, etc. The core network device referred to in this application at least includes an LMF entity or other functional entities capable of collecting and managing the location information of the terminal device.

[0076] In a conventional wireless energy transmission scenario, a terminal device and an access network device adopt a closed-loop measurement plus feedback scheme to improve the transmission efficiency of a wireless energy transmission signal. For example, the terminal device measures a downlink reference signal transmitted by the access network device, and then feeds back to the access network device an optimal frequency point obtained by measuring the downlink reference signal. Then, the access network device transmits a wireless energy signal to the terminal device at the frequency point fed back by the terminal device. However, the access network device can transmit the reference signal through multiple antennas, and the terminal device needs to complete the measurement of the reference signal transmitted by each antenna of the access network device to determine the optimal frequency point. In addition, in a multi-station energy transmission scenario, there can be multiple access network devices transmitting reference signals near the terminal device. At this time, the terminal device needs to complete the measurement of the reference signal transmitted by each antenna of each access network device to determine the optimal frequency point. As can be seen, the foregoing measurement plus feedback scheme will introduce additional power consumption overhead and time overhead, which is not conducive to the improvement of the wireless energy transmission efficiency.

[0077] To this end, the present application provides a wireless energy transmission method and a communication device, wherein an access network device can determine a weight value of a transmitted wireless energy signal based on the position information of a terminal device, and transmit the wireless energy signal to the terminal device through the weight value. Since the terminal device does not need to measure the reference signal, the power consumption overhead of the terminal device for closed-loop measurement of the reference signal can be reduced to improve the wireless energy transmission efficiency.

[0078] The wireless energy transmission method provided by the present application will be described below in conjunction with FIG. 2:

[0079] As shown in FIG. 2, it is a flowchart of a wireless energy transmission method provided by the present application. The wireless energy transmission method is illustrated by taking the interaction between a terminal device and an access network device as an example. Of course, the subject performing the action of the terminal device in the method can also be a device or a module in the terminal device; the subject performing the action of the access network device in the method can also be a device or a module in the access network device, which is not specifically limited in the embodiment. For example, as shown in FIG. 2, the wireless energy transmission method includes the following steps:

[0080] Step 201: An access network device acquires position information of a terminal device.

[0081] For example, before performing wireless energy transmission on the terminal device, the access network device acquires the position information of the terminal device, so as to decide how to maximize the transmitted wireless energy signal to reach the terminal device based on the position information of the terminal device. Specifically, the access network device can acquire the position information of the terminal device through any one of the following implementation manners.

[0082] In a possible implementation, the access network device obtains the location information of the terminal device from the terminal device. In an example, when the terminal device needs to be wirelessly powered, the terminal device actively sends the location information of the terminal device to the access network device. For example, when the remaining energy consumption of the terminal device is lower than a preset threshold, the terminal device actively sends the location information of the terminal device to the access network device, so that the access network device powers the terminal device based on the location information of the terminal device. In another example, the terminal device sends the location information of the terminal device to the access network device based on a location reporting rule, which can be preconfigured or sent by the access network device, and the application does not limit it. For example, the location reporting rule can indicate that the terminal device periodically reports the location information of the terminal device to the access network device; or, whenever the location of the terminal device changes, the terminal device reports the current latest location information of the terminal device to the access network device.

[0083] In this embodiment, the terminal device actively reports the location information of the terminal device to the access network device, which is beneficial to the access network device to obtain the accurate location of the terminal device in time, and further beneficial to the access network device to determine to maximize the transmission of the wireless energy signal to the terminal device based on the accurate location information of the terminal device.

[0084] In another possible implementation, the access network device obtains the location information of the terminal device from the core network device. In an example, the access network device sends a location request message to the core network device, where the location request message includes the identification information of the terminal device, and the location request message is used to indicate that the core network device is requested to provide the location information of the terminal device; then, the access network device receives a location response message from the core network device, where the location response message includes the location information of the terminal device.

[0085] It should be understood that the core network device in this embodiment refers to a device having a function of managing the location of the terminal device. For example, the core network device can be a location management function (LMF) entity in a 5G-Advanced converged network architecture, or can be another functional entity capable of managing the location information of the terminal device in a future communication system, and the application does not limit it.

[0086] In this embodiment, the access network device obtains the location information of the terminal device from the core network device, which can save the energy consumption and occupied network time-frequency resources caused by the terminal device reporting the location information to the access network device, and can improve the security of the terminal device and reduce the risk of the location information of the terminal device being leaked.

[0087] It should be understood that the location information of the terminal device is used to indicate the location (for example, the geographical position or the physical position) where the terminal device is located.

[0088] Optionally, the location information of the terminal device comprises a coordinate type of a location where the terminal device is located and a coordinate value of the location where the terminal device is located. The coordinate type of the location where the terminal device is located comprises a relative coordinate type and an absolute coordinate type, i.e., the coordinate type is used to indicate whether the coordinate of the terminal device is a relative coordinate or an absolute coordinate. The relative coordinate can also be referred to as a local coordinate, which can be a coordinate of the terminal device relative to a certain access network device (e.g., an access network device currently providing communication services for the terminal device) as an origin. The absolute coordinate can also be referred to as a global coordinate, which can be a coordinate with a certain geographical location (e.g., a certain longitude and latitude) as an origin. Optionally, the coordinate type of the location where the terminal device is located further comprises a coordinate system type. For example, common coordinate system types include a geodetic coordinate system, an earth longitude and latitude coordinate system, or a polar coordinate system. The geodetic coordinate system is a coordinate system established with a reference ellipsoid as a reference surface in geodetic surveying. The position of a ground point (i.e., the location where the terminal device is located) is represented by geodetic longitude, geodetic latitude, and geodetic height. The earth longitude and latitude coordinate system uses the longitude and latitude of the location where the terminal device is located as the coordinate value of the terminal device. The polar coordinate system, also known as the polar coordinate system, is a coordinate system composed of a distance and one or more azimuth angles in a plane.

[0089] It should be understood that in actual applications, the terminal device can also use other ways to represent the location of the terminal device, and the application does not limit the specific implementation form of the coordinate type. Since the location information of the terminal device comprises the coordinate type, it is beneficial for the terminal device to provide appropriate coordinate values of the coordinate type on demand, beneficial for improving the efficiency of the terminal device in reporting the location of the terminal device, or beneficial for improving the efficiency of the access network device in obtaining the location of the terminal device.

[0090] In step 202, the access network device determines a first weight value for transmitting a first signal based on the location information of the terminal device.

[0091] The first signal is used to transmit energy to the terminal device, i.e., the first signal is a wireless energy signal used to transmit energy to the terminal device.

[0092] Optionally, the first signal corresponds to at least two frequency points. It can be understood that the first signal comprises at least two frequency point signals. It can also be understood that the first signal is composed of at least two frequency point signals.

[0093] The first weight value is determined by the access network device based on the position information of the terminal device, and is used for sending a wireless energy signal to the terminal device. The first weight value is related to an angle of the terminal device relative to the access network device (hereinafter referred to as a relative angle) and a distance of the terminal device relative to the access network device (hereinafter referred to as a relative distance). The angle of the terminal device relative to the access network device (i.e., the relative angle) is determined based on the position information of the terminal device and the position information of the access network device; the distance of the terminal device relative to the access network device (i.e., the relative distance) is determined based on the position information of the terminal device and the position information of the access network device. For example, the access network device determines the relative angle and the relative distance based on the position information of the terminal device and the position information of the access network device.

[0094] It should be understood that the first weight value is related to the relative angle, and the wireless energy signal (e.g., the first signal) sent based on the first weight value can be aligned with the direction in which the terminal device is located; the first weight value is related to the relative distance, and the gain of the wireless energy signal (e.g., the first signal) sent based on the first weight value can be controlled to avoid severe attenuation of the wireless energy signal before it reaches the terminal device. Therefore, the access network device sends the first signal based on the first weight value determined based on the relative angle and the relative distance, which helps the first signal to accurately and with high gain reach the terminal device, thereby improving the wireless energy transmission efficiency.

[0095] In a possible implementation, the first weight value is determined based on a second weight value and a third weight value. The second weight value is related to the angle of the terminal device relative to the access network device (i.e., the relative angle), i.e., the access network device determines the second weight value based on the relative angle; the third weight value is related to the distance of the terminal device relative to the access network device (i.e., the relative distance), i.e., the access network device determines the third weight value based on the relative distance. Since the second weight value is related to the relative angle, the wireless energy signal (e.g., the first signal) sent based on the second weight value can have a greater probability of being aligned with the direction in which the terminal device is located. Since the third weight value is related to the relative distance, the third weight value helps to control the gain of the wireless energy signal (e.g., the first signal) to avoid severe attenuation of the wireless energy signal before it reaches the terminal device.

[0096] Optionally, the second weight value is also related to the spacing of the antennas of the access network device and / or the wavelength corresponding to the frequency point of the first signal. For example, in the process of determining the second weight value, the access network device will refer to the spacing of the antennas of the access network device and / or the wavelength corresponding to the frequency point of the first signal in addition to the angle of the terminal device relative to the access network device (i.e., the relative angle). The spacing of the antennas of the access network device refers to the distance between two adjacent antennas included in the array antenna of the access network device. The wavelength corresponding to the frequency point of the first signal refers to the wavelength of a certain frequency point in the at least two frequency points corresponding to the first signal.

[0097] In an example, the second weight, the angle of the terminal device relative to the access network device, the spacing of the antennas of the access network device, and the wavelength corresponding to the frequency point of the first signal satisfy the following formula 1:

[0098] wherein, is the second weight, represents the weight of the N antennas corresponding to the kth frequency (i.e., f k ), N represents the number of antennas of the access network device, N is an integer greater than 1; θ represents the angle of the terminal device relative to the access network device; d represents the spacing of the antennas of the access network device; λ k represents the wavelength corresponding to the kth frequency point in the at least two frequency points corresponding to the first signal; φ k represents a fixed value related to or unrelated to the kth frequency point in the at least two frequency points; j represents an imaginary unit.

[0099] For example, if the access network device has 2 antennas (i.e., N = 2), each antenna corresponds to 3 frequency points (for example, the 1st frequency point (i.e., f1), the 2nd frequency point (i.e., f2), and the 3rd frequency point (i.e., f3)), then represents a matrix composed of the weight of the 1st antenna corresponding to the 1st frequency point (i.e., f1) and the weight of the 2nd antenna corresponding to the 1st frequency point (i.e., f1); represents a matrix composed of the weight of the 1st antenna corresponding to the 2nd frequency point (i.e., f2) and the weight of the 2nd antenna corresponding to the 2nd frequency point (i.e., f2); represents a matrix composed of the weight of the 1st antenna corresponding to the 3rd frequency point (i.e., f3) and the weight of the 2nd antenna corresponding to the 3rd frequency point (i.e., f3).

[0100] It should be noted that φ k is a fixed value related to or unrelated to the kth frequency point in the at least two frequency points, and the weight vector multiplied by exp(-jφ k ) does not affect the direction of the signal beam, which is conducive to more flexible weight design.

[0101] It should be understood that in some scenarios, the second weight is also referred to as an antenna weight, which is used to reflect the weighting coefficient between different antennas of the access network device. Generally, the signals sent by different antennas of the access network device are the same, but the complex coefficients multiplied by the signals sent by different antennas are different. The complex coefficient is the weighting coefficient. The complex coefficient includes the amplitude and phase corresponding to the antenna. The wireless energy signal sent based on the second weight can be aligned with the direction of the terminal device, thereby improving the efficiency of wireless energy transmission.

[0102] Optionally, the third weight value is further related to frequencies of the at least two frequency points and / or wavelengths of the at least two frequency points. For example, in the process of determining the third weight value, the access network device refers to the frequencies of the at least two frequency points and / or the wavelengths of the at least two frequency points corresponding to the wireless energy signal to be transmitted in addition to the distance of the terminal device relative to the access network device (i.e., the relative distance).

[0103] In an example, the third weight value, the distance of the terminal device relative to the access network device, the frequencies of the at least two frequency points, and the wavelengths of the at least two frequency points satisfy the following formula 2:

[0104] wherein, is the third weight value, represents the weight value of the signal of the first frequency in the signals of the at least two frequency points (i.e., the signals of the M frequency points) transmitted by the i-th antenna to the corresponding weight value in the signals of the M frequency points, M is the number of frequencies transmitted by one antenna, M is an integer greater than 1; t represents time; R i represents the distance of the terminal device relative to the access network device, for example, the distance of the terminal device to the i-th antenna of the access network device; f1 represents the frequency of the first frequency point in the M frequency points corresponding to the first signal; f M represents the frequency of the M-th frequency point in the M frequency points corresponding to the first signal; λ1 represents the wavelength corresponding to the first frequency point in the M frequency points corresponding to the first signal; λ M represents the wavelength corresponding to the M-th frequency point in the M frequency points corresponding to the first signal; represents a fixed value related or unrelated to the i-th antenna of the access network device; j represents an imaginary unit.

[0105] For example, if the access network device has 2 antennas (i.e., N = 2) and each antenna corresponds to 3 frequency points, then represents a matrix composed of weight value coefficients of the signals of the 3 frequencies transmitted by the first antenna, i.e., a matrix composed of the signals of the first frequency point (i.e., f1), the signals of the second frequency point (i.e., f2), and the signals of the third frequency point (i.e., f3) transmitted by the first antenna; represents a matrix composed of weight value coefficients of the signals of the 3 frequencies transmitted by the second antenna, i.e., a matrix composed of the signals of the first frequency point (i.e., f1), the signals of the second frequency point (i.e., f2), and the signals of the third frequency point (i.e., f3) transmitted by the second antenna; represents a matrix composed of weight value coefficients of the signals of the 3 frequencies transmitted by the third antenna, i.e., a matrix composed of the signals of the first frequency point (i.e., f1), the signals of the second frequency point (i.e., f2), and the signals of the third frequency point (i.e., f3) transmitted by the third antenna.

[0106] It should be noted that, is a fixed value related to or not related to the i-th antenna of the access network device, and the weight vector is multiplied with After multiplication, the direction of the signal beam is not affected, which is beneficial to realize more flexible weight design.

[0107] It should be understood that in some scenarios, the third weight is also referred to as a frequency weight (for example, a frequency diverse array (FDA) weight), which is used to reflect the weighting coefficient between different frequency signals in the wireless energy signal (for example, the first signal) transmitted by the access network device. By setting different weighting coefficients between different frequency signals corresponding to the first signal, the coherent superposition of different frequency signals in the first signal when transmitted to the terminal device is realized. This is beneficial to realize the gain of high peak to average power ratio (PAPR), improve the rectification efficiency of the wireless signal, and thus improve the energy transmission efficiency.

[0108] It should be noted that the first weight, the second weight and the third weight in the present application are weights of a signal matrix, that is, the second weight is a matrix, the third weight is also a matrix, and the first weight determined based on the second weight and the third weight is also a matrix.

[0109] Optionally, the first weight is determined based on the product of the second weight and the third weight. The aforementioned product refers to the product between matrices. For example, the aforementioned product can be a Hadamard product (also known as an elementary product). For example, if A=(a ij ) and B=(b ij ) are two matrices of the same order, if c ij =a ij ×b ij , then the matrix C=(c ij ) is called the Hadamard product or elementary product of A and B.

[0110] For example, if the matrix the matrix the matrix

[0111] It should be understood that since the first weight is the weight used by the access network device when finally transmitting the first signal, in some scenarios, the first weight is also referred to as a transmission weight. Since the transmission weight is determined based on the antenna weight and the frequency weight, which represents the weight of each frequency corresponding to each antenna, transmitting the first signal based on the transmission weight can make the first signal align with the terminal device and ensure that the first signal realizes coherent superposition when reaching the terminal device, thereby increasing the function of the first signal received by the terminal device and improving the efficiency of wireless energy transmission.

[0112] It should be noted that the antenna in the present application can be understood as an antenna element in an array antenna, or other forms of antennas, which are not limited in the present application. For example, in some scenarios, the number of antennas in the present application can be replaced by the number of antenna elements, the spacing between antennas can be replaced by the spacing between antenna elements, and N antennas can be replaced by N antenna elements.

[0113] In step 203, the access network device sends a first signal to the terminal device based on the first weight; correspondingly, the terminal device receives the first signal from the access network device.

[0114] In the embodiment, the access network device can obtain the position information of the terminal device, and determine the first weight for sending the wireless energy signal (i.e. the first signal) to the terminal device based on the position information of the terminal device. Since the access network device determines the first weight based on the position information of the terminal device, the terminal device does not need to measure the reference signal, thereby reducing the energy consumption overhead of the terminal device in closed-loop measurement of the reference signal. In addition, since the first weight is determined based on the first weight and the second weight, the second weight is related to the angle of the terminal device relative to the access network device, and the third weight is related to the distance of the terminal device relative to the access network device, therefore, the first signal sent by the first weight can realize coherent transmission, which can improve the power of the wireless energy signal received by the receiving end (i.e. the terminal device), and is beneficial to improving the energy transmission efficiency.

[0115] As shown in FIG. 3, another flowchart of a wireless energy transmission method provided by the present application is shown. The embodiment takes the access network device obtaining the position information of the terminal device from the terminal device as an example to introduce the behaviors of the terminal device and the access network device. The wireless energy transmission method in the embodiment is described by taking the interaction between the terminal device and the access network device as an example. Of course, the subject performing the action of the terminal device in the method can also be a device or module in the terminal device; the subject performing the action of the access network device in the method can also be a device or module in the access network device, which is not limited in the embodiment. For example, as shown in FIG. 3, the wireless energy transmission method includes the following steps:

[0116] In step 301, the terminal device sends an energy transmission request to the access network device; correspondingly, the access network device receives the energy transmission request from the terminal device.

[0117] The energy transmission request includes the position information of the terminal device. For example, the access network device receives the wireless energy transmission request from the terminal device, and parses the wireless energy transmission request to obtain the position information of the terminal device. The position information of the terminal device is described in the foregoing step 201, which is not repeated here.

[0118] In addition, the energy transmission request further includes first indication information, the first indication information being used to indicate that the access network device transmits the wireless energy signal to the terminal device.

[0119] Optionally, the energy transmission request further includes wireless energy transmission quantity information and / or wireless energy transmission time information.

[0120] The energy transmission quantity information is used to indicate the size of the wireless energy requested to be transmitted by the terminal device, and can also be understood as indicating the size of the wireless energy expected to be obtained by the terminal device from the access network device. In an example, the energy transmission quantity information includes an energy transmission value. For example, the energy transmission value is 100 ampere-hours (Ah), indicating that the size of the wireless energy requested to be transmitted by the terminal device from the access network device is 100 ampere-hours (Ah). In another example, the energy transmission quantity information includes a transmission power and a transmission duration. For example, if the transmission power is 600 watts (W) and the transmission duration is 2 hours (h), it indicates that the terminal device requests the access network device to continuously transmit wireless energy to the terminal device at a power of 600 W for 2 hours (h).

[0121] It should be understood that, in actual application, the energy transmission quantity information can also be implemented in other manners, which are not limited in the present application. In addition, in addition to the units of the energy transmission quantity information in the foregoing examples, in actual application, the energy transmission information provided by the present application can also use other units. For example, the unit of the energy transmission value can also be milliamperes (mAh); the unit of the transmission power can also be kilowatts (kW); and the unit of the transmission duration can also be minutes (min) or seconds (s). The present application does not limit the specific units of the energy transmission information.

[0122] The wireless energy transmission time information is used to indicate the time range in which the terminal device can receive the wireless energy signal, and can also be understood as indicating the time range in which the terminal device expects the access network device to transmit energy to the terminal device. The wireless energy transmission time information can include a transmission start time and a transmission duration, or can include a transmission start time and a transmission end time, which are not limited in the present application.

[0123] Optionally, the energy transmission request can further include energy level information of the terminal device, the energy level information of the terminal device being used to indicate the size of the energy remaining in the terminal device. In an example, the energy level information of the terminal device includes an energy value remaining in the terminal device. For example, the energy level information of the terminal device is 10 ampere-hours (Ah), indicating that the energy value remaining in the terminal device is 10 ampere-hours (Ah). In another example, the energy level information of the terminal device includes a working power and a working duration of the terminal device. For example, the energy level information of the terminal device is 100 watts (W) and 10 hours (h), indicating that the energy remaining in the terminal device can work at a working power of 100 W for 10 hours (h).

[0124] In this step, the terminal device can provide the access network device with the size of wireless energy that the terminal device expects and the time range that the terminal device expects, so that the access network device transmits energy to the terminal device with reference to the size of wireless energy and the time range provided by the terminal device, which is beneficial to improving the efficiency of energy transmission from the access network device to the terminal device.

[0125] After receiving the energy transmission request from the terminal device, the access network device will determine the first weight value. For details, please refer to the relevant description in step 303 below.

[0126] In step 302, the access network device determines the wireless energy transmission amount information and / or the wireless energy transmission time information based on the energy transmission request.

[0127] In this embodiment, step 302 is an optional step. For example, in the case that the energy transmission request does not include the wireless energy transmission amount information and the wireless energy transmission time information, the access network device can determine the wireless energy transmission amount information and / or the wireless energy transmission time information based on the content carried by the energy transmission request, that is, determine how much energy the access network device needs to transmit to the terminal device and when to transmit energy to the terminal device. For another example, although the energy transmission request includes the wireless energy transmission amount information and / or the wireless energy transmission time information, the access network device may need to consider its own energy supply capability and the energy supply demand of other terminal devices around, and the access network device can also determine the wireless energy transmission amount information and / or the wireless energy transmission time information. In this case, the wireless energy transmission amount information (or the wireless energy transmission time information) determined by the access network device may be different from the wireless energy transmission amount information (or the wireless energy transmission time information) provided by the terminal device.

[0128] In a possible implementation, the energy transmission request includes the energy level information of the terminal device. The access network device determines the wireless energy transmission amount information and / or the wireless energy transmission time information based on the energy level information of the terminal device. For example, the energy level information of the terminal device is 10 ampere-hours (Ah), and the maximum capacity of the terminal device is 100 ampere-hours (Ah). If the access network device is relatively idle at 10 o'clock in the evening, the access network device can determine the wireless energy transmission amount information as 90 ampere-hours (Ah), and determine the wireless energy transmission time information as after 10 o'clock in the evening, which means that the access network device transmits energy to the terminal device after 10 o'clock in the evening until the energy level of the terminal device approaches 100 ampere-hours (Ah).

[0129] In this embodiment, the terminal device can provide the access network device with the energy level information of the terminal device, so that the access network device determines the size of wireless energy to be transmitted to the terminal device based on the energy level information of the terminal device, which is beneficial to improving the efficiency of energy transmission from the access network device to the terminal device.

[0130] In another possible implementation, the energy transmission request comprises terminal device expected wireless energy transmission amount information and / or terminal device expected wireless energy transmission time information. The access network device determines wireless energy transmission amount information and / or wireless energy transmission time information used by the access network device for subsequent energy transmission to the terminal device based on the terminal device expected wireless energy transmission amount information and / or terminal device expected wireless energy transmission time information. For example, the terminal device expected wireless energy transmission amount information contained in the energy transmission request is 600 W and 2 hours, indicating that the terminal device requests the access network device to continuously transmit wireless energy to the terminal device at a power of 600 W for 2 hours (h). However, the access network device currently also needs to supply energy to other terminal devices, and therefore, the wireless energy transmission amount information determined by the access network device is 600 W and 1.5 hours, indicating that the access network device continuously transmits wireless energy to the terminal device at a power of 600 W for 1.5 hours (h).

[0131] In this embodiment, the access network device determines the size and time range of wireless energy used by the access network device for final energy transmission to the terminal device with reference to the terminal device expected wireless energy transmission amount information and / or terminal device expected wireless energy transmission time information, which is beneficial for the access network device to perform energy transmission to the terminal device in combination with the load condition of the access network device. In the case where the access network device needs to perform energy transmission to multiple terminal devices, it is beneficial for the access network device to provide guarantee for energy transmission to the multiple terminal devices, thereby being beneficial for the efficiency of wireless energy transmission.

[0132] It should be understood that, in actual application, the access network device can also have other examples of determining wireless energy transmission amount information and / or wireless energy transmission time information, which are not described herein.

[0133] In step 303, the access network device determines a first weight value for sending the first signal based on the location information of the terminal device.

[0134] In this embodiment, step 303 is similar to step 202 described above, and details are referred to the related description in step 202 described above, which is not described herein.

[0135] It should be understood that, in this embodiment, there is no time sequence limitation between step 302 and step 303, and the access network device can perform step 302 first and then perform step 303, or perform step 303 first and then perform step 302, or perform step 302 and step 303 at the same time, which is not limited by the present application.

[0136] In step 304, the access network device sends the first signal to the terminal device based on the first weight value, and correspondingly, the terminal device receives the first signal from the access network device.

[0137] Optionally, the access network device sends the first information to the terminal device based on the first weight in the wireless energy transmission time until the transmission time length is reached or the wireless energy transmission amount is reached.

[0138] In this embodiment, the terminal device can provide accurate position information of the terminal device to the access network device, which facilitates the access network device to accurately determine the position (e.g., relative angle or relative distance, etc.) of the terminal device relative to the access network device, and is conducive to the access network device to determine accurate second weight (i.e., antenna weight) and third weight (i.e., frequency weight), and further is conducive to the access network device to determine accurate first weight (i.e., sending weight), and further is conducive to improving the energy transmission efficiency.

[0139] As shown in FIG. 4, another flowchart of the wireless energy transmission method provided by the present application is shown. This embodiment takes the access network device obtaining the position information of the terminal device from the core network device as an example to introduce the behaviors of the terminal device, the access network device and the core network device. The wireless energy transmission method in this embodiment is described by taking the interaction among the terminal device, the access network device and the core network device as an example. Of course, the subject performing the action of the terminal device in the method can also be a device or a module in the terminal device; the subject performing the action of the access network device in the method can also be a device or a module in the access network device; the subject performing the action of the core network device in the method can also be a device or a module in the core network device, which is not limited in this embodiment. For example, as shown in FIG. 4, the wireless energy transmission method includes the following steps:

[0140] Step 401, the terminal device sends an energy transmission request to the access network device; correspondingly, the access network device receives the energy transmission request from the terminal device.

[0141] The energy transmission request includes first indication information, and the first indication information is used to indicate that the access network device is requested to send a wireless energy signal to the terminal device.

[0142] Optionally, the energy transmission request further includes wireless energy transmission amount information and / or wireless energy transmission time information. The energy transmission amount information is used to indicate the size of the wireless energy requested to be transmitted by the terminal device, and the wireless energy transmission time information is used to indicate the time range in which the terminal device can receive the wireless energy signal.

[0143] Optionally, the energy transmission request further includes energy level information of the terminal device, and the energy level information of the terminal device is used to indicate the size of the remaining energy of the terminal device.

[0144] The first indication information, the wireless energy transmission amount information, the wireless energy transmission time information and the energy level information of the terminal device are explained in the foregoing step 301, which will not be repeated here.

[0145] It should be noted that, compared with the foregoing step 301, the energy transfer request does not carry the location information of the terminal device. For example, the terminal device can not be able to obtain the accurate location of the terminal device, or the terminal device does not directly report the location information of the terminal device to the access network device. Since the energy transfer request does not include the location information of the terminal device, the access network device requests the location information of the terminal device from the core network device. Specifically, the access network device will perform steps 403 and 404.

[0146] In step 402, the access network device determines the wireless energy transfer amount information and / or the wireless energy transfer time information based on the energy level information of the terminal device.

[0147] In this embodiment, step 402 is an optional step. Step 402 is similar to the foregoing step 302, and specific details can be referred to the related description in the foregoing step 302, which will not be described here.

[0148] In step 403, the access network device sends a location request message to the core network device; correspondingly, the core network device receives the location request message from the access network device.

[0149] The location request message includes the identification information of the terminal device. The location request message is used to request the core network device to provide the location information of the terminal device. The explanation of the location information of the terminal device can be referred to the related description in the foregoing step 201, which will not be described here.

[0150] Optionally, the core network device can be a device having a function of managing the location of the terminal device. For example, the core network device can be a location management function (LMF) entity in a 5G-Advanced converged network architecture, or can be a functional entity capable of managing the location information of the terminal device in a future communication system, which is not limited by the present application.

[0151] In step 404, the core network device sends a location response message to the access network device; correspondingly, the access network device receives the location response message from the core network device.

[0152] The location response message includes the location information of the terminal device.

[0153] It should be understood that, in this embodiment, there is no time sequence limitation between step 402 and steps 403 to 404. The access network device can first perform step 402 and then perform steps 403 to 404, or can first perform steps 403 to 404 and then perform step 402, or can simultaneously perform step 402 and steps 403 to 404, which is not limited by the present application.

[0154] At step 405, the access network device determines a first weight value for sending the first signal based on the location information of the terminal device.

[0155] In this embodiment, step 405 is similar to step 202 described above. For details, please refer to the description of step 202 above.

[0156] At step 406, the access network device sends the first signal to the terminal device based on the first weight value. Correspondingly, the terminal device receives the first signal from the access network device.

[0157] Optionally, the access network device sends the first information to the terminal device based on the first weight value in the wireless energy transmission time until the transmission time length is reached or the wireless energy transmission amount is reached.

[0158] In this embodiment, the access network device obtains the location information of the terminal device from the core network device, which can save the energy consumption and network time-frequency resources occupied by the terminal device reporting the location information to the access network device, and improve the security of the terminal device and reduce the risk of the location information of the terminal device being leaked.

[0159] Corresponding to the scheme given in the foregoing method embodiment, the present embodiment also provides a corresponding communication apparatus (also referred to as a communication device) and a communication system. The communication apparatus includes modules or units corresponding to each part of the above embodiments for performing the functions of the modules or units. The modules or units can be software, hardware, or a combination of software and hardware. The communication apparatus and system are briefly described below. For details of the scheme implementation, please refer to the description of the foregoing method embodiment, which will not be described here.

[0160] As shown in FIG. 5, it is a structural schematic diagram of a communication apparatus 50 provided in this embodiment. It should be understood that the terminal device in the foregoing method embodiments corresponding to FIG. 2, FIG. 3 or FIG. 4 can be based on the structure of the communication apparatus 50 shown in FIG. 5 in this embodiment.

[0161] The communication apparatus 50 includes at least one processor 501, at least one memory 502 and at least one transceiver 503. The processor 501, the memory 502 and the transceiver 503 are connected. Optionally, the communication apparatus 50 can also include an input device 505, an output device 506 and one or more antennas 504. The antenna 504 is connected to the transceiver 503, and the input device 505 and the output device 506 are connected to the processor 501.

[0162] In this embodiment, the memory 502 is mainly used to store software programs and data. The memory 502 can exist independently and be connected to the processor 501. Optionally, the memory 502 can be integrated with the processor 501, for example, integrated within one or more chips. The memory 502 can store program code that executes the technical solutions of this application embodiment, and its execution is controlled by the processor 501. The various types of computer program code being executed can also be considered as drivers for the processor 501. It should be understood that Figure 5 in this embodiment only shows one memory and one processor; however, in practical applications, the communication device 50 can have multiple processors or multiple memories, and this is not limited here. Furthermore, the memory 502 can also be called a storage medium or storage device, etc. The memory 502 can be a storage element on the same chip as the processor (i.e., an on-chip storage element), or it can be an independent storage element; this embodiment does not limit this.

[0163] In this embodiment, transceiver 503 can be used to support the reception or transmission of radio frequency signals between communication device 50 and access network equipment. Transceiver 503 can be connected to antenna 504. Transceiver 503 includes transmitter Tx and receiver Rx. Specifically, one or more antennas 504 can receive radio frequency signals. The receiver Rx of transceiver 503 is used to receive the radio frequency signals from antennas 504, convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and provide the digital baseband signals or digital intermediate frequency signals to processor 501 so that processor 501 can perform further processing on the digital baseband signals or digital intermediate frequency signals, such as demodulation and decoding. In addition, the transmitter Tx in transceiver 503 is also used to receive modulated digital baseband signals or digital intermediate frequency signals from processor 501, convert the modulated digital baseband signals or digital intermediate frequency signals into radio frequency signals, and transmit the radio frequency signals through one or more antennas 504. Specifically, the receiver Rx can selectively perform one or more stages of downmixing and analog-to-digital conversion on the radio frequency signal to obtain a digital baseband signal or a digital intermediate frequency (IF) signal. The order of the downmixing and IF conversion processes is adjustable. The transmitter Tx can selectively perform one or more stages of upmixing and digital-to-analog conversion on the modulated digital baseband signal or digital IF signal to obtain a radio frequency signal. The order of the upmixing and IF conversion processes is also adjustable. The digital baseband signal and the digital IF signal can be collectively referred to as digital signals.

[0164] It should be understood that the aforementioned transceiver 503 can also be referred to as a transceiver unit, transceiver, transceiver device, etc. Optionally, the device in the transceiver unit used to implement the receiving function can be regarded as the receiving unit, and the device in the transceiver unit used to implement the transmitting function can be regarded as the transmitting unit. That is, the transceiver unit includes a receiving unit and a transmitting unit. The receiving unit can also be referred to as a receiver, input port, receiving circuit, etc., and the transmitting unit can be referred to as a transmitter, transmitter, or transmitting circuit, etc.

[0165] Processor 501 can be a baseband processor or a central processing unit (CPU). The baseband processor and CPU can be integrated together or separate. Processor 501 can be used to implement various functions for the terminal device, such as processing communication protocols and communication data, or controlling the entire terminal device, executing software programs, and processing data from software programs; or assisting in completing computational processing tasks, such as graphics processing or audio processing; or processor 501 can be used to implement one or more of the above functions.

[0166] Furthermore, the output device 506 communicates with the processor 501 and can display information in various ways, which are not limited here.

[0167] In one design, the communication device 50 is used to execute the method of the terminal device in the embodiments corresponding to FIG2, FIG3, or FIG4. In this communication device 50, the processor 501 is used to determine the location information of the terminal device; the transceiver 503 is used to send the location information of the terminal device to the access network device, the location information being used by the access network device to determine a first weight for transmitting a first signal, the first signal being used to transmit power to the terminal device, the first weight being determined based on a second weight and a third weight, the second weight being related to the angle of the terminal device relative to the access network device, and the third weight being related to the distance of the terminal device relative to the access network device; and receiving the first signal from the access network device.

[0168] Optionally, the angle of the terminal device relative to the access network device is determined based on the location information of the terminal device and the access network device; the distance of the terminal device relative to the access network device is determined based on the location information of the terminal device and the access network device.

[0169] Optionally, the second weight is also related to the spacing of the antennas of the access network equipment and / or the wavelength corresponding to the frequency point of the first signal.

[0170] Optionally, the first signal corresponds to at least two frequency points; the third weight is also related to the frequency of at least two frequency points and / or the wavelength of at least two frequency points.

[0171] Optionally, the first weight is determined based on the product of the second and third weights.

[0172] Optionally, the location information of the terminal device includes the coordinate type of the terminal device's location and the coordinate value of the terminal device's location.

[0173] In one possible implementation, transceiver 503 is further configured to send a power transmission request to the access network device, the power transmission request including first indication information, the first indication information being used to instruct the access network device to send a wireless power signal to the terminal device.

[0174] Optionally, the power transfer request may also include wireless power transfer amount information and / or wireless power transfer time information. The wireless power transfer amount information is used to indicate the amount of wireless power requested by the terminal device, and the wireless power transfer time information is used to indicate the time range within which the terminal device can receive the wireless power signal.

[0175] Optionally, the energy transfer request may also include energy level information of the terminal device, which indicates the amount of energy remaining in the terminal device.

[0176] Optionally, the energy transfer request may also include the location information of the terminal device.

[0177] It should be noted that the specific implementation method and beneficial effects of this embodiment can be referred to the terminal device method in the above embodiments, and will not be repeated here.

[0178] Figure 6 shows a schematic diagram of another communication device 60 provided in this embodiment. It should be understood that the access network device in the method embodiments corresponding to Figures 2, 3, or 4 above can be based on the structure of the communication device 60 shown in Figure 6 of this embodiment.

[0179] The communication device 60 includes at least one processor 601, at least one memory 602, at least one transceiver 603, at least one network interface 605, and one or more antennas 604. The processor 601, memory 602, transceiver 603, and network interface 605 are connected via a connection device, and the antenna 604 is connected to the transceiver 603. The aforementioned connection device may include various interfaces, transmission lines, or buses, etc., and this embodiment is not limited to any particular type.

[0180] The memory 602 is primarily used to store software programs and data. The memory 602 can exist independently and be connected to the processor 601. Optionally, the memory 602 can be integrated with the processor 601, for example, integrated within one or more chips. The memory 602 can store program code that executes the technical solutions of the embodiments of this application, and its execution is controlled by the processor 601. The various types of computer program code being executed can also be considered as drivers for the processor 601. It should be understood that Figure 6 in this embodiment only shows one memory and one processor; however, in practical applications, the communication device 60 can have multiple processors or multiple memories, and this is not limited here. Furthermore, the memory 602 can also be called a storage medium or storage device, etc. The memory 602 can be a storage element located on the same chip as the processor (i.e., an on-chip storage element), or it can be a separate storage element; this embodiment does not limit this.

[0181] In this embodiment, transceiver 603 can be used to support the reception or transmission of radio frequency signals between communication device 60 and terminal device. Transceiver 603 can be connected to antenna 604. Transceiver 603 includes transmitter Tx and receiver Rx. Specifically, one or more antennas 604 can receive radio frequency signals. The receiver Rx of transceiver 603 is used to receive the radio frequency signals from antennas 604, convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and provide the digital baseband signals or digital intermediate frequency signals to processor 601 so that processor 601 can perform further processing on the digital baseband signals or digital intermediate frequency signals, such as demodulation and decoding. In addition, the transmitter Tx in transceiver 603 is also used to receive modulated digital baseband signals or digital intermediate frequency signals from processor 601, convert the modulated digital baseband signals or digital intermediate frequency signals into radio frequency signals, and transmit the radio frequency signals through one or more antennas 604. Specifically, the receiver Rx can selectively perform one or more stages of downmixing and analog-to-digital conversion on the radio frequency signal to obtain a digital baseband signal or a digital intermediate frequency (IF) signal. The order of the downmixing and IF conversion processes is adjustable. The transmitter Tx can selectively perform one or more stages of upmixing and digital-to-analog conversion on the modulated digital baseband signal or digital IF signal to obtain a radio frequency signal. The order of the upmixing and IF conversion processes is also adjustable. The digital baseband signal and the digital IF signal can be collectively referred to as digital signals.

[0182] It should be understood that the aforementioned transceiver 603 can also be referred to as a transceiver unit, transceiver, transceiver device, etc. Optionally, the device in the transceiver unit used to implement the receiving function can be regarded as the receiving unit, and the device in the transceiver unit used to implement the transmitting function can be regarded as the transmitting unit. That is, the transceiver unit includes a receiving unit and a transmitting unit. The receiving unit can also be referred to as a receiver, input port, receiving circuit, etc., and the transmitting unit can be referred to as a transmitter, transmitter, or transmitting circuit, etc.

[0183] Furthermore, the aforementioned processor 601 is mainly used for processing communication protocols and communication data, controlling the entire network device, executing software programs, and processing software program data, for example, to support the communication device 60 in performing the actions described in the foregoing embodiments. The communication device 60 may include a baseband processor and a central processing unit (CPU). The baseband processor is mainly used for processing communication protocols and communication data, while the CPU is mainly used for controlling the entire communication device 60, executing software programs, and processing software program data. As shown in Figure 6, the processor 601 can integrate the functions of both the baseband processor and the CPU; alternatively, the baseband processor and the CPU can be independent processors interconnected via technologies such as buses. Furthermore, the communication device 60 may include multiple baseband processors to adapt to different network standards, and multiple CPUs to enhance its processing capabilities. The various components of the communication device 60 can be connected via various buses. The baseband processor can also be described as a baseband processing circuit or a baseband processing chip. The CPU can also be described as a central processing circuit or a central processing chip. The function of processing communication protocols and communication data can be built into the processor or stored in memory as a software program, which is then executed by the processor to implement the baseband processing function.

[0184] Furthermore, the aforementioned network interface 605 is used to enable the communication device 60 to connect with other communication devices via a communication link. Specifically, the network interface 605 may include a network interface between the communication device 60 and a core network element, such as an S1 interface; the network interface 605 may also include a network interface between the communication device 60 and other network devices (such as other access network devices or core network elements), such as an X2 or Xn interface.

[0185] In one design, the communication device 60 is used to perform the method of the access network device in the embodiments corresponding to FIG2, FIG3, or FIG4. The transceiver 603 in the communication device 60 is used to acquire the location information of the terminal device; the processor 601 is used to determine a first weight for transmitting a first signal based on the location information of the terminal device, the first signal being used to transmit power to the terminal device, the first weight being determined based on a second weight and a third weight, the second weight being related to the angle of the terminal device relative to the access network device, and the third weight being related to the distance of the terminal device relative to the access network device; the transceiver 603 is also used to transmit the first signal to the terminal device based on the first weight.

[0186] Optionally, the angle of the terminal device relative to the access network device is determined based on the location information of the terminal device and the access network device; the distance of the terminal device relative to the access network device is determined based on the location information of the terminal device and the access network device.

[0187] Optionally, the second weight is also related to the spacing of the antennas of the access network equipment and / or the wavelength corresponding to the frequency point of the first signal.

[0188] Optionally, the first signal corresponds to at least two frequency points; the third weight is also related to the frequency of at least two frequency points and / or the wavelength of at least two frequency points.

[0189] Optionally, the first weight is determined based on the product of the second and third weights.

[0190] In one possible implementation, transceiver 603 is specifically used to receive the location information of the terminal device from the terminal device; or, to receive the location information of the terminal device from the core network device.

[0191] Optionally, the location information of the terminal device includes the coordinate type of the terminal device's location and the coordinate value of the terminal device's location. The coordinate type includes relative coordinate type, absolute coordinate type, and coordinate system type.

[0192] In one possible implementation, transceiver 603 is further configured to receive a power transfer request from a terminal device, the power transfer request including first indication information, the first indication information being used to instruct the requesting access network device to send a wireless power signal to the terminal device.

[0193] Optionally, the power transfer request may also include wireless power transfer amount information and / or wireless power transfer time information. The wireless power transfer amount information is used to indicate the amount of wireless power requested by the terminal device, and the wireless power transfer time information is used to indicate the time range within which the terminal device can receive the wireless power signal.

[0194] Optionally, the energy transfer request may also include energy level information of the terminal device, which indicates the amount of energy remaining in the terminal device.

[0195] Optionally, the energy transfer request may also include the location information of the terminal device.

[0196] In one possible implementation, the processor 601 is further configured to determine wireless power transfer amount information and / or wireless power transfer time information based on the power level information of the terminal device.

[0197] In one possible implementation, transceiver 603 is further configured to send a location request message to the core network device, the location request message including the identification information of the terminal device; and to receive a location response message from the core network device, the location response message including the location information of the terminal device.

[0198] It should be noted that the specific implementation method and beneficial effects of this embodiment can be referred to the method of the access network device in the above embodiments, and will not be repeated here.

[0199] As shown in Figure 7, this application also provides a communication device 70. The communication device 70 can be a terminal device or an access network device, or a component of the terminal device or access network device (e.g., an integrated circuit, a chip, etc.). The communication device 70 can also be other communication modules used to implement the methods in the method embodiments of this application.

[0200] The communication device 70 may include a processing module 701 (or processing unit). Optionally, it may also include an interface module 702 (or transceiver unit or transceiver module) and a storage module 703 (or storage unit). The interface module 702 is used to enable communication with other devices. The interface module 702 may be, for example, a transceiver module or an input / output module.

[0201] In one possible design, one or more modules as shown in Figure 7 may be implemented by one or more processors, or by one or more processors and memory; or by one or more processors and transceivers; or by one or more processors, memory, and transceivers. This application does not limit the specific implementation of these modules. The processors, memory, and transceivers can be implemented individually or integrated into a single unit.

[0202] The communication device 70 has the functions of the terminal device described in the embodiments of this application. For example, the communication device 70 includes modules, units, or means corresponding to the steps involved in the terminal device described in the embodiments of this application. The functions, units, or means can be implemented by software, hardware, or hardware executing corresponding software, or a combination of software and hardware. Further details can be found in the corresponding descriptions in the foregoing method embodiments. Specifically, please refer to the communication device 50 in the embodiment corresponding to Figure 5 above.

[0203] Alternatively, the communication device 70 may have the functions of the access network device described in the embodiments of this application. For example, the communication device 70 includes modules, units, or means corresponding to the steps of the access network device described in the embodiments of this application. These functions, units, or means can be implemented by software, hardware, or hardware executing corresponding software, or a combination of software and hardware. Further details can be found in the corresponding descriptions in the foregoing method embodiments. Specifically, please refer to the communication device 60 in the embodiment corresponding to Figure 6 above.

[0204] Furthermore, this application provides a computer program product comprising one or more computer instructions. When these computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. For example, methods related to access network devices as shown in Figures 2, 3, or 4 above are implemented. Another example is methods related to terminal devices as shown in Figures 2, 3, or 4 above are implemented. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a server or data center that integrates one or more available media. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital versatile discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0205] In addition, this application also provides a computer-readable storage medium storing a computer program that is executed by a processor to implement the methods related to the access network device as shown in Figures 2, 3 or 4 above.

[0206] In addition, this application also provides a computer-readable storage medium storing a computer program that is executed by a processor to implement the terminal device-related methods as shown in Figures 2, 3 or 4 above.

[0207] It should be understood that in the various embodiments of this application, the sequence number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

Claims

1. A wireless power transfer method, applied in access network equipment, characterized in that, The method comprises: obtaining position information of a terminal device; determining a first weight value for transmitting a first signal based on the position information of the terminal device, the first signal being used for transmitting energy to the terminal device, the first weight value being determined based on a second weight value and a third weight value, the second weight value being related to an angle of the terminal device relative to the access network device, and the third weight value being related to a distance of the terminal device relative to the access network device; transmitting the first signal to the terminal device based on the first weight value.

2. The method of claim 1, wherein, The angle of the terminal device relative to the access network device is determined based on the position information of the terminal device and position information of the access network device; and the distance of the terminal device relative to the access network device is determined based on the position information of the terminal device and the position information of the access network device.

3. The method according to claim 1 or 2, characterized in that, The second weight value is further related to a spacing of antennas of the access network device and / or a wavelength corresponding to a frequency point of the first signal.

4. The method of claim 3, wherein, The second weight, the angle of the terminal device relative to the access network device, the spacing of the antennas of the access network device, and the wavelength corresponding to the frequency point of the first signal satisfy the following formula 1: Among them, the For the second weight, represents the weight of the N antennas corresponding to the kth frequency (i.e. f k ) of the terminal device relative to the access network device; d represents the interval of the antennas of the access network device; λ k represents the wavelength corresponding to the kth frequency point of the at least two frequency points corresponding to the first signal; φ k represents a fixed value related or unrelated to the kth frequency point of the at least two frequency points; j represents an imaginary unit.

5. The method according to claim 1 or 2, characterized in that, The first signal corresponds to at least two frequency points; and the third weight value is further related to frequencies of the at least two frequency points and / or wavelengths of the at least two frequency points.

6. The method of claim 5, wherein, The third weight value, the distance of the terminal device relative to the access network device, the frequencies of the at least two frequency points, and the wavelengths of the at least two frequency points satisfy the following formula 2: Among them, the For the third weight value, it represents the corresponding weight value of the signal of the 1st frequency in the signals of at least two frequency points transmitted on the i-th antenna to the corresponding weight value of the signal of the M-th frequency point, where M is the number of frequencies transmitted by one antenna, and M is an integer greater than 1; t represents time; R i represents the distance of the terminal device relative to the access network device; f1 represents the frequency of the 1st frequency point in the M frequency points corresponding to the first signal; f M represents the frequency of the M-th frequency point in the M frequency points corresponding to the first signal; λ1 represents the wavelength corresponding to the 1st frequency point in the M frequency points corresponding to the first signal; λ M represents the wavelength corresponding to the M-th frequency point in the M frequency points corresponding to the first signal; and The j represents an imaginary unit.

7. The method according to any one of claims 1 to 6, characterized in that, The first weight value is determined based on a product of the second weight value and the third weight value.

8. The method according to any one of claims 1 to 7, characterized in that, The method of obtaining the position information of the terminal device comprises: receiving the position information of the terminal device from the terminal device; or receiving the position information of the terminal device from a core network device.

9. The method according to any one of claims 1 to 8, characterized in that, The position information of the terminal device comprises a coordinate type of a position where the terminal device is located and a coordinate value of the position where the terminal device is located, and the coordinate type comprises a relative coordinate type, an absolute coordinate type and a coordinate system type.

10. The method according to any one of claims 1 to 9, characterized in that, Before the method of determining the first weight value for transmitting the first signal based on the position information of the terminal device, the method further comprises: receiving an energy transmission request from the terminal device, the energy transmission request comprising first indication information, the first indication information being used for indicating that the access network device is requested to transmit a wireless energy signal to the terminal device.

11. The method of claim 10, wherein, The energy transmission request further comprises wireless energy transmission amount information and / or wireless energy transmission time information, the wireless energy transmission amount information being used for indicating a size of wireless energy requested to be transmitted by the terminal device, and the wireless energy transmission time information being used for indicating a time range in which the terminal device can receive the wireless energy signal.

12. The method according to claim 10 or 11, characterized in that, The energy transmission request further comprises energy level information of the terminal device, the energy level information of the terminal device being used for indicating a size of energy remaining in the terminal device.

13. The method according to any one of claims 10 to 12, characterized in that, The energy transmission request further comprises the position information of the terminal device.

14. The method of claim 13, wherein, The method further comprises: determining the wireless energy transmission amount information and / or the wireless energy transmission time information based on the energy level information of the terminal device.

15. The method of claim 14, wherein, The method of receiving the position information of the terminal device from the core network device comprises: sending a position request message to the core network device, the position request message comprising identification information of the terminal device; receiving a location response message from the core network device, the location response message comprising location information of the terminal device.

16. A wireless energy transmission method applied in a terminal device, comprising: comprising: sending, to an access network device, location information of the terminal device, the location information being used by the access network device to determine a first weight value for sending a first signal, the first signal being used to transmit energy to the terminal device, the first weight value being determined based on a second weight value and a third weight value, the second weight value being related to an angle of the terminal device relative to the access network device, the third weight value being related to a distance of the terminal device relative to the access network device; receiving the first signal from the access network device.

17. The method of claim 16, wherein, The angle of the terminal device relative to the access network device is determined based on the location information of the terminal device and the location information of the access network device; the distance of the terminal device relative to the access network device is determined based on the location information of the terminal device and the location information of the access network device.

18. The method according to claim 16 or 17, characterized in that The second weight value is further related to a spacing of antennas of the access network device and / or a wavelength corresponding to a frequency point of the first signal.

19. The method of claim 18, wherein, The second weight, the angle of the terminal device relative to the access network device, the spacing of the antennas of the access network device, and the wavelength corresponding to the frequency point of the first signal satisfy the following formula 1: wherein the For the second weight, represents the weight of the N antennas corresponding to the kth frequency (i.e. f k ) of the terminal device relative to the access network device; d represents the interval of the antennas of the access network device; λ k represents the wavelength corresponding to the kth frequency point of the at least two frequency points corresponding to the first signal; φ k represents a fixed value related or unrelated to the kth frequency point of the at least two frequency points; j represents an imaginary unit.

20. The method of claim 16 or 17, wherein, The first signal corresponds to at least two frequency points; the third weight value is further related to frequencies of the at least two frequency points and / or wavelengths of the at least two frequency points.

21. The method of claim 20, wherein, The third weight value, the distance of the terminal device relative to the access network device, the frequencies of the at least two frequency points, and the wavelengths of the at least two frequency points satisfy the following formula 2: wherein the For the third weight value, it represents the corresponding weight value of the signal of the 1st frequency in the signals of at least two frequency points transmitted on the i-th antenna to the corresponding weight value of the signal of the M-th frequency point, where M is the number of frequencies transmitted by one antenna, and M is an integer greater than 1; t represents time; R i represents the distance of the terminal device relative to the access network device; f1 represents the frequency of the 1st frequency point in the M frequency points corresponding to the first signal; f M represents the frequency of the M-th frequency point in the M frequency points corresponding to the first signal; λ1 represents the wavelength corresponding to the 1st frequency point in the M frequency points corresponding to the first signal; λ M represents the wavelength corresponding to the M-th frequency point in the M frequency points corresponding to the first signal; and The j represents an imaginary unit.

22. The method of any one of claims 16 to 21, wherein, The first weight value is determined based on a product of the second weight value and the third weight value.

23. The method of any one of claims 16 to 22, wherein, The location information of the terminal device comprises a coordinate type of a location where the terminal device is located and a coordinate value of the location where the terminal device is located.

24. The method of any one of claims 16-23, wherein, The method further comprises: sending, to the access network device, an energy transmission request, the energy transmission request comprising first indication information, the first indication information being used to indicate a request for the access network device to send a wireless energy signal to the terminal device.

25. The method of claim 24, wherein, The energy transmission request further comprises wireless energy transmission amount information and / or wireless energy transmission time information, the wireless energy transmission amount information being used to indicate a size of wireless energy requested to be transmitted by the terminal device, the wireless energy transmission time information being used to indicate a time range in which the terminal device can receive a wireless energy signal.

26. The method of claim 24 or 25, wherein, The energy transmission request further comprises energy level information of the terminal device, the energy level information of the terminal device being used to indicate a size of energy remaining in the terminal device.

27. The method of any one of claims 24-26, wherein, The energy transmission request further comprises location information of the terminal device.

28. A communications device, characterized by comprising a processor and a memory; wherein the memory stores a computer program; the processor invokes the computer program to cause the communication device to perform the method of any one of claims 1 to 15.

29. A communications device, characterized by comprising a processor and a memory; wherein the memory stores a computer program; the processor invokes the computer program to cause the communication device to perform the method of any one of claims 16 to 27.

30. A computer-readable storage medium, characterized in that, instructions stored thereon, which, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 15; or, perform the method of any one of claims 16 to 27.

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