Wireless energy transmission method, base station, and terminal

Abstract

Embodiments of the present disclosure provide a wireless energy transmission method, a base station, and a terminal. The method comprises: periodically sending radio frequency energy signals to a terminal, wherein transmission gaps of the radio frequency energy signals are data transmission cycles; and transmitting data signals in the data transmission cycles. The present disclosure solves the problems in the related art that radio frequency energy signals have large transmit power and thus would cause strong interference with terminals receiving downlink data signals and some terminals do not support sending or receiving data signals while receiving energy signals.

Description

Wireless power transmission methods, base stations and terminals

[0001] Cross-references to related applications

[0002] This disclosure is based on and claims priority to Chinese patent application CN202410976232.4, filed on July 19, 2024, entitled “Method for wireless power transmission, base station and terminal”, and incorporates the entire contents of that patent application by reference. Technical Field

[0003] This disclosure relates to the field of communications, and more specifically, to a method for transmitting wireless energy, a base station, and a terminal. Background Technology

[0004] In 6th Generation Wireless Systems (6G), base stations can not only provide communication services to User Equipment (UE), but also charge UEs over long distances via radio frequency (RF) signals. However, there are some problems with using RF signals for wireless power transfer to UEs. On the one hand, the high transmission power of RF signals can cause strong interference to the transmission and reception of data signals, affecting their normal transmission and reception. On the other hand, UEs often only have one RF receiving circuit, and cannot receive data simultaneously while receiving power. Summary of the Invention

[0005] This disclosure provides a wireless energy transmission method, base station, and terminal to at least address the problems in related technologies where the large transmission power of radio frequency energy signals causes strong interference to the terminal's reception of downlink data signals, and some terminals do not support transmitting or receiving data signals while receiving energy signals.

[0006] According to one embodiment of this disclosure, a wireless energy transmission method is provided, applied to a base station, comprising: periodically transmitting radio frequency energy signals to a terminal, wherein the transmission interval of the radio frequency energy signals is a data transmission period, and transmitting data signals during the data transmission period.

[0007] According to one embodiment of this disclosure, a wireless energy transmission method is provided, applied to a terminal, comprising: receiving radio frequency energy signals periodically transmitted by a base station, wherein the transmission interval of the radio frequency energy signals is a data transmission period, and transmitting data signals during the data transmission period.

[0008] According to another embodiment of this disclosure, a base station is provided, including: a first energy module configured to periodically transmit radio frequency energy signals to a terminal, wherein the transmission interval of the radio frequency energy signals is a data transmission cycle; and a first data module configured to transmit data signals during the data transmission cycle.

[0009] According to another embodiment of this disclosure, a terminal is provided, including: a second energy module configured to receive radio frequency energy signals periodically transmitted by a base station, wherein the transmission interval of the radio frequency energy signals is a data transmission cycle; and a second data module configured to transmit data signals during the data transmission cycle.

[0010] According to yet another embodiment of this disclosure, a computer-readable storage medium is also provided, in which a computer program is stored, wherein the computer program is configured to perform the steps in any of the above method embodiments when it is run.

[0011] According to yet another embodiment of this disclosure, an electronic device is also provided, including a memory and a processor, wherein a computer program is stored in the memory and the processor is configured to run the computer program to perform the steps in any of the above method embodiments.

[0012] According to yet another embodiment of this disclosure, a computer program product is also provided, including a computer program that, when executed by a processor, implements the steps in any of the above method embodiments.

[0013] This invention addresses the issue that, due to the base station's periodic transmission of radio frequency (RF) energy signals, the intervals between RF energy signal transmissions constitute the data transmission cycle. During this cycle, the base station can transmit uplink or downlink data signals, both uplink and downlink data signals, or neither. Therefore, it solves the problems in related technologies where the high transmission power of the RF energy signal causes significant interference to the terminal's downlink data signal reception, and where some terminals do not support simultaneous transmission or reception of data signals while receiving energy signals. This invention achieves the effect of receiving and transmitting data signals while charging. Attached Figure Description

[0014] Figure 1 is a hardware structure block diagram of a computer terminal for a wireless power transmission method according to an embodiment of the present disclosure.

[0015] Figure 2 is a flowchart (a) of a wireless power transmission method according to an embodiment of the present disclosure;

[0016] Figure 3 is a flowchart (II) of a wireless power transmission method according to an embodiment of the present disclosure;

[0017] Figure 4 is a schematic diagram (a) of a wireless power transmission method according to an embodiment of the present disclosure;

[0018] Figure 5 is a schematic diagram (II) of a wireless power transmission method according to an embodiment of the present disclosure;

[0019] Figure 6 is a schematic diagram of the time and frequency resources occupied by the original uplink data signal and short signal according to an embodiment of the present disclosure;

[0020] Figure 7 is a schematic diagram of a short signal form according to an embodiment of the present disclosure;

[0021] Figure 8 is a schematic diagram of transmitting radio frequency energy signals during the gap in uplink data transmission according to an embodiment of the present disclosure;

[0022] Figure 9 is a schematic diagram of the protection interval according to an embodiment of the present disclosure;

[0023] Figure 10 is a schematic diagram of different trigger signals corresponding to different forms of data transmission cycles according to embodiments of the present disclosure;

[0024] Figure 11 is a schematic diagram of different forms of data transmission cycles according to embodiments of the present disclosure (I);

[0025] Figure 12 is a schematic diagram (II) of different forms of data transmission cycles according to embodiments of the present disclosure;

[0026] Figure 13 is a schematic diagram showing that different types of trigger signals occupy different time-frequency resources according to embodiments of the present disclosure;

[0027] Figure 14 is a schematic diagram of different trigger signals according to embodiments of the present disclosure;

[0028] Figure 15 is a structural block diagram of a base station according to an embodiment of the present disclosure;

[0029] Figure 16 is a structural block diagram of a terminal according to an embodiment of the present disclosure. Detailed Implementation

[0030] The embodiments of this disclosure will be described in detail below with reference to the accompanying drawings and examples.

[0031] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0032] The method embodiments provided in this disclosure can be executed in a mobile terminal, computer terminal, or similar computing device. Taking a computer terminal as an example, FIG1 is a hardware structure block diagram of a computer terminal for a wireless power transmission method according to an embodiment of this disclosure. As shown in FIG1, the computer terminal may include one or more (only one is shown in FIG1) processors 102 (processor 102 may include, but is not limited to, processing devices such as microprocessors MCUs or programmable logic devices FPGAs) and a memory 104 for storing data. The computer terminal may also include a transmission device 106 for communication functions and an input / output device 108. It will be understood by those skilled in the art that the structure shown in FIG1 is merely illustrative and does not limit the structure of the computer terminal. For example, the computer terminal may also include more or fewer components than shown in FIG1, or have a different configuration than shown in FIG1.

[0033] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the wireless energy transmission method in this embodiment. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the above-described method. The memory 104 may include high-speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to a computer terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0034] The transmission device 106 is used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider for the computer terminal. In one example, the transmission device 106 includes a Network Interface Controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission device 106 may be a Radio Frequency (RF) module used for wireless communication with the Internet.

[0035] This embodiment provides a wireless power transmission method operating on the aforementioned computer terminal. Figure 2 is a flowchart (I) of the wireless power transmission method according to an embodiment of this disclosure, applied to a base station. As shown in Figure 2, the process includes the following steps:

[0036] Step S202: Periodically send radio frequency energy signals to the terminal, wherein the transmission interval of the radio frequency energy signals is the data transmission period;

[0037] Step S204: Transmit data signals during the data transmission cycle.

[0038] In this embodiment, transmitting data signals during the data transmission cycle includes at least one of the following: sending downlink data signals to the terminal during the data transmission cycle, and receiving uplink data signals sent by the terminal during the data transmission cycle.

[0039] In this embodiment, sending downlink data signals to the terminal during the data transmission cycle includes at least one of the following: sending a wake-up signal to the terminal during the data transmission cycle, and sending at least one of the following during the data transmission cycle: paging signal, synchronization signal, downlink signaling, downlink reference signal, or other service data.

[0040] In this embodiment, during the data transmission cycle, both downlink data signals can be sent to the terminal and uplink data signals can be received from the terminal. For example, data signal transmission can be performed using one of the following methods: sending a paging signal to the terminal and receiving an uplink access request signal or response signal from the terminal; sending a wake-up signal to the terminal and receiving a response signal from the terminal; sending a downlink reference signal to the terminal and receiving measurement results from the terminal, wherein the downlink reference signal includes a Channel State Information Reference Signal (CSI-RS) and the measurement results include Channel State Information (CSI); sending downlink signaling to the terminal and receiving an acknowledgment character (ACK) from the terminal; sending downlink service data to the terminal and receiving a response signal from the terminal; receiving a charging termination request from the terminal and sending an acknowledgment character (ACK) to the terminal; receiving an uplink access request from the terminal and sending a response signal to the terminal; receiving an uplink data transmission request from the terminal, sending a response signal to the terminal, and allocating uplink transmission resources to the terminal.

[0041] In one embodiment, after sending a downlink data signal to the terminal during a data transmission cycle, the base station can start a timer and listen for the acknowledgment character (ACK) sent by the terminal. If no ACK is received within a predetermined time, the base station determines that the downlink data signal transmission has failed; otherwise, it determines that the downlink data signal transmission has been successful. When the base station does not receive an ACK within the predetermined time, it retransmits the downlink data signal to the terminal during a data transmission cycle or a preset data transmission cycle after the data transmission cycle, until the terminal successfully receives the downlink data signal and sends an ACK within a preset number of retransmissions.

[0042] In one embodiment, receiving uplink data signals sent by the terminal during a data transmission cycle includes: sending a radio frequency (RF) energy signal to the terminal during the transmission gap of the uplink data signal, based on pre-configuration information from the base station or an uplink data signal carrying indication information sent by the terminal. The pre-configuration information or indication information includes: whether to send an RF energy signal to the terminal during the transmission gap of the uplink data signal, and the time-domain length and location of the RF energy signal.

[0043] In one embodiment, transmitting data signals during a data transmission cycle includes: receiving a short signal sent by the receiving terminal on the time-frequency resources or a portion of the time-frequency resources of the uplink data signal; and allocating additional transmission resources to the terminal during the data transmission cycle or a preset data transmission cycle following the data transmission cycle. The short signal includes one of the following: uplink control signaling, used to notify the base station terminal that it cannot transmit uplink data signals due to insufficient power; the terminal's power information; a preamble to the uplink data signal, wherein the preamble includes the terminal's identification information; a portion of the uplink data signal data; the amount of uplink data signal data; and a power transmission request, wherein the power transmission request is used by the terminal to request the base station to transmit a radio frequency power signal.

[0044] In one embodiment, a guard interval exists between the radio frequency energy signal and the data transmission cycle.

[0045] In one embodiment, before transmitting data signals during a data transmission cycle, the base station can determine a trigger signal based on the correspondence between the data transmission cycle and the trigger signal, and send the trigger signal to the terminal to notify the terminal that the data transmission cycle is about to begin.

[0046] In this embodiment, determining the trigger signal based on the correspondence between the data transmission period and the trigger signal includes: dividing the data transmission period into a preset number of time units, and determining the data signal transmission mode for each time unit, wherein the transmission mode includes: downlink transmission, uplink transmission, data transmission, and no data transmission; determining the corresponding trigger signal based on the data signal transmission mode of the preset number of time units of the data transmission period; pre-configuring the correspondence between the data transmission period and the trigger signal in the terminal, or sending the correspondence to the terminal through a broadcast message or downlink signaling.

[0047] In this embodiment, determining the corresponding trigger signal based on the transmission mode of the data signal of a preset number of time units in the data transmission cycle includes: determining at least one of the waveform, sequence, and time-frequency resources of the trigger signal.

[0048] Through the above steps, the terminal periodically sends radio frequency energy signals, and the transmission interval of the radio frequency energy signals is the data transmission cycle. Data signals are transmitted during the data transmission cycle, which solves the problem in related technologies that the large transmission power of radio frequency energy signals will cause strong interference to the terminal's reception of downlink data signals, and that some terminals do not support sending or receiving data signals while receiving energy signals. Thus, the effect of receiving and sending data signals during charging is achieved.

[0049] Figure 3 is a flowchart (II) of a wireless power transmission method according to an embodiment of the present disclosure, applied to a terminal. As shown in Figure 3, the process includes the following steps:

[0050] Step S302: Receive radio frequency energy signals periodically transmitted by the base station, wherein the transmission interval of the radio frequency energy signals is the data transmission period;

[0051] Step S304: Transmit data signals during the data transmission cycle.

[0052] In this embodiment, transmitting data signals during the data transmission cycle includes at least one of the following: receiving downlink data signals sent by the base station during the data transmission cycle, and sending uplink data signals to the base station during the data transmission cycle.

[0053] In this embodiment, sending uplink data signals to the base station during the data transmission cycle includes one of the following: sending a data transmission request to the base station, sending uplink service data to the base station, sending an uplink reference signal to the base station to enable the base station to perform channel detection or beam calibration, sending a beam calibration request to the base station, sending a power termination request to the base station to enable the base station to stop power supply after receiving the power termination request, and sending an uplink access request to the base station.

[0054] In this embodiment, the terminal can both receive downlink data signals from the base station and send uplink data signals to the base station during the data transmission cycle. For example, data signal transmission can be performed in one of the following ways: sending a paging signal to the terminal and receiving an uplink access request signal or response signal from the terminal; sending a wake-up signal to the terminal and receiving a response signal from the terminal; sending a downlink reference signal to the terminal and receiving reported measurement results from the terminal; sending downlink signaling to the terminal and receiving an acknowledgment character (ACK) from the terminal; sending downlink service data to the terminal and receiving a response signal from the terminal; receiving a charging termination request from the terminal and sending an acknowledgment character (ACK) to the terminal; receiving an uplink access request from the terminal and sending a response signal to the terminal; receiving an uplink data transmission request from the terminal, sending a response signal to the terminal, and allocating uplink transmission resources to the terminal.

[0055] In one embodiment, transmitting data signals during a data transmission cycle includes one of the following: if downlink data signals are successfully received, sending an acknowledgment character ACK to the base station; or if downlink data signals cannot be received due to insufficient power, receiving downlink data signals retransmitted by the base station during a data transmission cycle or a preset data transmission cycle after the data transmission cycle, and sending an acknowledgment character ACK to the base station.

[0056] In one embodiment, sending an uplink data signal to the base station during a data transmission cycle includes: sending an uplink data signal carrying indication information to the base station, and receiving a radio frequency energy signal sent by the base station during the transmission gap of the uplink data signal. The indication information includes: whether a radio frequency energy signal is sent to the terminal during the transmission gap of the uplink data signal, and the time domain length and location of the radio frequency energy signal.

[0057] In one embodiment, transmitting data signals during a data transmission cycle includes: when insufficient power prevents the transmission of uplink data signals to the base station, before or during the transmission of the uplink data signal, transmitting a short signal to the base station on the time-frequency resources or a portion of the time-frequency resources of the uplink data signal, and receiving additional transmission resources allocated by the base station during or after a preset data transmission cycle. The short signal includes one of the following: uplink control signaling, used to notify the base station terminal that it cannot transmit uplink data signals due to insufficient power; the terminal's energy information; a preamble to the uplink data signal, wherein the preamble includes identification information; a portion of the uplink data signal data; the amount of uplink data signal data; and an energy transmission request, wherein the energy transmission request is used by the terminal to request the base station to transmit a radio frequency energy signal.

[0058] In one embodiment, a guard interval exists between the radio frequency energy signal and the data transmission cycle.

[0059] In one embodiment, before transmitting data signals during a data transmission cycle, the terminal may receive a trigger signal sent by the base station to know that the data transmission cycle is about to begin.

[0060] Through the above steps, the radio frequency energy signal periodically transmitted by the base station is received. The transmission interval of the radio frequency energy signal is the data transmission cycle. Data signal is transmitted during the data transmission cycle. This solves the problem in related technologies where the large transmission power of the radio frequency energy signal will cause strong interference to the terminal's reception of downlink data signal, and some terminals do not support sending or receiving data signals while receiving energy signals. Thus, the effect of receiving and sending data signals during charging is achieved.

[0061] Example 1

[0062] Figure 4 is a schematic diagram (I) of a wireless power transmission method according to an embodiment of the present disclosure. As shown in Figure 4, the base station periodically transmits radio frequency power signals, and the interval between the transmission of radio frequency power signals is the data transmission period. Figure 5 is a schematic diagram (II) of a wireless power transmission method according to an embodiment of the present disclosure. As shown in Figure 5, during the data transmission period, for the terminal, the data transmission period can be used to transmit uplink data signals or downlink data signals, or both uplink and downlink data signals can be transmitted, or neither uplink nor downlink data signals can be transmitted.

[0063] 1. When the data transmission cycle is used to transmit downlink data signals, the following situations may occur:

[0064] 1) The base station sends a Wake-Up Signal (WUS) to the terminal to wake it up and allow it to listen to downlink channels, such as the Physical Downlink Control Channel (PDCCH) and the Physical Downlink Shared Channel (PDSCH). After sending the WUS, the base station can send other downlink data signals to the terminal. For example, during a data transmission cycle, the base station first sends the WUS to wake the charging terminal to listen to the channels, and then sends downlink signaling, downlink reference signals, and service data to the terminal.

[0065] 2) The base station sends paging signals and synchronization signals to the terminal to help the terminal complete uplink synchronization and access the cell. For example, the base station sends a synchronization signal / physical broadcast channel block.

[0066] 3) The base station sends downlink signaling to the terminal, such as downlink control information (DCI), radio resource control (RRC) signaling, and media access control control element (MAC CE).

[0067] 4) The base station sends downlink reference signals to the terminal for measuring channel state information and beam calibration, such as sending a Channel State Information-Reference Signal (CSI-RS).

[0068] 5) The base station transmits other service data to the terminal.

[0069] 2. When the data transmission cycle is used to transmit uplink signals, the following situations may occur:

[0070] 1) The terminal sends a data transmission request to the base station, such as requesting the base station to allocate downlink transmission resources.

[0071] 2) The terminal sends uplink service data to the base station, such as sensors and other devices sending measurement data to the base station.

[0072] 3) The terminal sends uplink reference signals to the base station to help the base station perform channel detection and beam calibration, such as sending a sounding reference signal (SRS).

[0073] 4) The terminal sends a beam calibration request to the base station. For example, if the terminal detects a decrease in the power of the received energy signal, it sends a beam calibration request to the base station to restore the beam.

[0074] 5) The terminal sends a charging termination request to the base station, and the base station stops supplying power to the terminal after receiving the request.

[0075] 6) The terminal sends an uplink access request to the base station, for example, to perform a random access process on the Physical Random Access Channel (PRACH).

[0076] 3. When the data transmission cycle transmits both uplink and downlink data signals, the following situations may occur:

[0077] 1) The base station sends a paging signal to the terminal, and the terminal sends an uplink access request signal or a response signal.

[0078] 2) The base station sends a wake-up signal to the terminal, and the terminal replies with a response signal.

[0079] 3) The base station sends downlink reference signals to the terminal, and the terminal reports the measurement results. For example, the base station sends CSI-RS, and the terminal reports CSI.

[0080] 4) The base station sends downlink signaling to the terminal, and the terminal replies with an acknowledgment character (ACK).

[0081] 5) The base station sends downlink service data to the terminal, and the terminal replies with a response signal.

[0082] 6) The terminal sends a charging termination request to the base station, and the base station replies with an ACK.

[0083] 7) The terminal initiates an uplink access request, and the base station responds.

[0084] 8) The terminal sends an uplink data transmission request to the base station, and the base station replies with a response signal and allocates uplink transmission resources to the terminal.

[0085] 4. Data transmission can also be omitted during the data transmission cycle. For example, when the terminal itself does not have sufficient power to transmit data signals, or when the base station has no service requirement to send data, data transmission can be omitted during the data transmission cycle.

[0086] Example 2

[0087] To prevent the terminal from failing to receive downlink data signals due to insufficient power, the terminal needs to send an Acknowledge Character (ACK) to the base station after successfully receiving the downlink data signal. After completing the downlink data signal transmission, the base station starts a timer and begins listening for ACKs from the terminal. If an ACK is received within time T, the data transmission is considered successful. If no ACK is received from the terminal after time T, the data transmission is considered to have failed. In the event of a data transmission failure, the base station retransmits the data signal to the terminal in the current data transmission cycle or in the Kth data transmission cycle following it, until the terminal successfully receives and reports an ACK. To prevent unlimited retransmissions, the base station stops retransmitting when the maximum number of retransmissions is exceeded.

[0088] Example 3

[0089] If a terminal discovers that its energy is insufficient to continue transmitting uplink data after transmitting part of the uplink data signal or before transmitting the uplink data signal, it can send a short signal to inform the base station that it cannot complete the transmission of the uplink data signal.

[0090] The short signal can include part of the original uplink signal. The terminal can transmit part of the original signal's data on a portion of the original uplink signal's time-frequency resources. The terminal can truncate the original uplink signal's data stream based on its own battery level, for example, by taking the first part and transmitting it. The truncated data can be scrambled, interleaved, encoded, modulated, or otherwise transmitted uplink.

[0091] Figure 6 is a schematic diagram of the time-frequency resources occupied by the original uplink data signal and the short signal according to an embodiment of the present disclosure. As shown in Figure 6, in mode 1, the short signal occupies part of the time-domain resources of the original uplink signal, and its frequency-domain resources are the same as those of the original uplink signal. In mode 2, the short signal occupies part of the frequency-domain resources of the original uplink signal, and its time-domain resources are the same as those of the original uplink signal. In mode 3, the short signal occupies part of the time-domain resources and part of the frequency-domain resources of the original uplink signal. In Figure 6, the time unit of each grid can be one Orthogonal Frequency Division Multiplexing (OFDM) symbol, frame, subframe, half-frame, time slot, etc., and the frequency unit of each grid can be one subcarrier, resource block (RB), etc.

[0092] The short signal can include the terminal's own battery level information, which helps the base station allocate uplink transmission resources for the terminal in the next transmission. For example, 2 bits of information can be used to report the terminal's battery level to the base station, as shown in the table below.

[0093] Table 1 Example of reporting power information using 2 bits.

[0094] The short signal may contain a preamble that was originally part of the uplink signal, which includes the terminal's identification information. Upon receiving this preamble, the base station can determine that the terminal's battery is insufficient to complete the full signal transmission. For example, the terminal identifier could be a 5G Globally Unique Temporary Identifier (5G-GUTI), a Temporary Mobile Subscriber Identity (TMSI), an International Mobile Subscriber Identity (IMSI), or a Radio Network Temporary Identity (RNTI), etc.

[0095] The short signal also includes the data volume of the original signal or the Transmission Buffer Size (TBS). After receiving the short signal, the base station compares the data volume of the original signal with the data volume of the received signal to determine that the terminal failed to transmit complete uplink data. For example, the terminal can report the TBS size as follows: Assuming the original uplink data contains K bits of information, the terminal looks up the smallest TBS size greater than K in Table 2 and reports the corresponding index. For example, when K = 1000, the table lookup shows a TBS size of 1032, and its index is 54.

[0096] Table 2. TBS Size and its Index

[0097] The short signal can also carry 1 bit of charging request information. When this bit is set to 1, it indicates a request for the base station to send a downlink radio frequency power signal.

[0098] Both the base station and the terminal can predefine multiple short signal formats. Different short signal formats can carry different content. The terminal selects the appropriate short signal format according to its own power level and sends it uplink to inform the base station that its power is low. Figure 7 is a schematic diagram of short signal formats according to an embodiment of this disclosure. As shown in Figure 7, format 1 can carry preamble / identification information and charging request; format 2 can carry preamble / identification information, charging request, and power information; format 3 can carry preamble / identification information, charging request, and TBS; and format 4 can carry preamble / identification information, charging request, TBS, and original signal data.

[0099] Short signals can be uplink signaling, such as Uplink Control Information (UCI), Media Access Control Control Element (MAC CE), or RRC signaling. For example, when the short signal is a UCI, it carries an Uplink Scheduling Request (SR) to request additional uplink transmission resources from the base station to transmit data that has not yet been fully transmitted. In this case, the base station can obtain information about the terminal's incomplete data transmission through the SR. When the short signal is a MAC CE, it carries a Buffer Status Reporting (BSR) to notify the base station of the remaining amount of data to be transmitted. For example, the terminal can report the following index to notify the base station of the remaining amount of data (in bytes).

[0100] Table 3. Correspondence between buffer size and index

[0101] When a terminal reports a short signal and the base station detects that the terminal has failed to complete data transmission, it allocates additional transmission resources to the terminal in the current data transmission cycle or in the Mth data transmission cycle after the current data transmission cycle ends.

[0102] Example 4

[0103] During the uplink data transmission interval, the base station can send a radio frequency (RF) energy signal to the terminal for power charging. Figure 8 is a schematic diagram of sending an RF energy signal during the uplink data transmission interval according to an embodiment of this disclosure, as shown in Figure 8. For example, the base station can pre-configure a transmission interval for transmitting the RF energy signal to the terminal via downlink signaling, including:

[0104] 1) Whether there is a transmission gap for transmitting radio frequency energy signals.

[0105] 2) The length and location of the transmission gap used to send energy signals.

[0106] Downlink signaling can be Downlink Control Information (DCI), Radio Resource Control (RRC) signaling, or a control unit of the Media Access Control (MAC) layer. Alternatively, the terminal can also request the base station to transmit radio frequency (RF) power signals during uplink data transmission intervals. For example, this request information can be carried in the uplink data, including whether to request the base station to transmit RF power signals during uplink data transmission intervals.

[0107] Example 5

[0108] To avoid mutual interference between radio frequency (RF) energy signals and data signals, a guard interval Δt can exist between the RF energy signal and the data transmission cycle. Figure 9 is a schematic diagram of the guard interval according to an embodiment of this disclosure. As shown in Figure 9, the guard interval can be inserted only before the data transmission cycle, or it can be inserted both before and after the data transmission cycle, or it can be inserted only after the data transmission cycle ends. The insertion method and length of the guard interval are notified to the terminal by the base station through a broadcast message or downlink signaling. For example, the broadcast message can be a physical broadcast channel block, and the downlink signaling can be downlink control information radio resource control signaling or a control unit of the media access control layer.

[0109] Example 6

[0110] The data transmission cycle can be triggered. The base station first sends a trigger signal to inform the terminal that the data transmission cycle is about to begin. Furthermore, different forms of data transmission cycles correspond to different trigger signals. Figure 10 is a schematic diagram of different trigger signals corresponding to different forms of data transmission cycles according to an embodiment of this disclosure. Different forms of data transmission cycles refer to different uplink and downlink transmission structures. For example, the data transmission cycle can be divided into K time units, each of which can be used for either uplink or downlink transmission. Figure 11 is a schematic diagram (a) of different forms of data transmission cycles according to an embodiment of this disclosure. As shown in Figure 11, when K=4, U represents uplink transmission and D represents downlink transmission. Each trigger signal corresponds to a data transmission cycle. After receiving the trigger signal, the terminal can obtain the transmission mode of the data transmission cycle. The correspondence between the trigger signal and the data transmission cycle can be pre-configured in the terminal, or the base station can notify the terminal using broadcast messages or downlink signaling.

[0111] Different types of data transmission cycles also include the length of time during which data transmission (on) and data transmission (off) occur within the data transmission cycle. The data transmission cycle is divided into K time units, and each time unit can either transmit data (on) or not transmit data (off). Data transmission can be uplink or downlink data transmission. Each type of data transmission cycle corresponds to a trigger signal. Figure 12 is a schematic diagram (II) of different types of data transmission cycles according to an embodiment of this disclosure, as shown in Figure 12.

[0112] Different types of trigger signals differ in any aspect, such as waveform, sequence, or time-frequency resources. For example, different types of trigger signal sequences can be shown in the table below:

[0113] Table 4 Different trigger signals and their sequences

[0114] Alternatively, different trigger signals can occupy different time-frequency resources. Figure 13 is a schematic diagram showing different types of trigger signals occupying different time-frequency resources according to an embodiment of this disclosure. Furthermore, the time-frequency resources occupied by the trigger signal can be combined with the sequence carried by the trigger signal to generate more types of trigger signals.

[0115] The trigger signal can be an amplitude-modulated (AM) signal, which uses the amplitude change of the radio frequency energy signal to form a wake-up signal. For example, the trigger signal can be an on-off keying (OOK) signal, which uses the switching of the radio frequency energy signal to represent the trigger signal. Figure 14 is a schematic diagram of different trigger signals according to an embodiment of this disclosure, as shown in Figure 14.

[0116] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solutions of this disclosure, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of this disclosure.

[0117] This embodiment also provides a base station, which is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that implements a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0118] Figure 15 is a structural block diagram of a base station according to an embodiment of the present disclosure. As shown in Figure 15, the device 1500 includes:

[0119] The first energy module 1502 is configured to periodically send radio frequency energy signals to the terminal, wherein the transmission interval of the radio frequency energy signals is the data transmission period;

[0120] The first data module 1504 is configured to transmit data signals during the data transmission cycle.

[0121] In this embodiment, the first data module 1504 is further configured to transmit data signals during the data transmission cycle, including at least one of the following: sending downlink data signals to the terminal during the data transmission cycle, and receiving uplink data signals sent by the terminal during the data transmission cycle.

[0122] In one embodiment, the device 1500 includes:

[0123] The listening module is configured to start a timer and listen for the ACK character sent by the terminal.

[0124] The judgment module is configured to determine that the transmission of downlink data signal has failed if no ACK is received within a predetermined time; otherwise, it is determined that the transmission of downlink data signal has succeeded.

[0125] In this embodiment, the first data module 1504 is further configured to resend the downlink data signal to the terminal during the data transmission cycle or a preset data transmission cycle after the data transmission cycle if no ACK is received within a predetermined time, until the terminal successfully receives the downlink data signal and sends an ACK within a preset number of resends.

[0126] In one embodiment, the first data module 1504 is further configured to send a radio frequency energy signal to the terminal during the transmission gap of the uplink data signal, based on the base station's pre-configuration information or the uplink data signal carrying indication information sent by the terminal. The pre-configuration information or indication information includes: whether to send the radio frequency energy signal to the terminal during the transmission gap of the uplink data signal, and the time domain length and location of the radio frequency energy signal.

[0127] In one embodiment, the first data module 1504 is further configured to receive short signals transmitted by the terminal on time-frequency resources or a portion of time-frequency resources of the uplink data signal, and allocate additional transmission resources to the terminal during the data transmission period or a preset data transmission period after the data transmission period. The short signal includes one of the following: uplink control signaling, used to notify the base station terminal that it cannot transmit the uplink data signal due to insufficient power; the terminal's power information; a preamble to the uplink data signal, wherein the preamble includes the terminal's identification information; a portion of the uplink data signal data; the amount of uplink data signal data; and a power transmission request, wherein the power transmission request is used by the terminal to request the base station to transmit a radio frequency power signal.

[0128] In one embodiment, a guard interval exists between the radio frequency energy signal and the data transmission cycle.

[0129] In one embodiment, the device 1500 includes:

[0130] The module is configured to determine the trigger signal based on the correspondence between the data transmission cycle and the trigger signal.

[0131] The sending module is configured to send a trigger signal to the terminal to notify the terminal that the data transmission cycle is about to begin.

[0132] In this embodiment, the determining module includes:

[0133] The first determining submodule is configured to divide the data transmission cycle into a preset number of time units and determine the data signal transmission mode for each time unit, wherein the transmission mode includes: downlink transmission, uplink transmission, data transmission, and no data transmission.

[0134] The second determining submodule is configured to determine the corresponding trigger signal based on the data signal transmission mode of a preset number of time units in the data transmission cycle;

[0135] The configuration submodule is set to pre-configure the correspondence between data transmission period and trigger signal in the terminal, or send the correspondence to the terminal through broadcast messages or downlink signaling.

[0136] In this embodiment, the second determining submodule includes:

[0137] Determine the secondary submodule, and set it to at least one of the waveform, sequence, and time-frequency resources for determining the trigger signal.

[0138] In one embodiment, the first data module 1504 is further configured to send downlink data signals to the terminal during the data transmission cycle, including at least one of the following: sending a wake-up signal to the terminal during the data transmission cycle, and sending at least one of the following: paging signal, synchronization signal, downlink signaling, downlink reference signal, and other service data to the terminal during the data transmission cycle.

[0139] In one embodiment, the first data module 1504 is further configured to transmit data signals during the data transmission cycle in one of the following ways: sending a paging signal to the terminal and receiving an uplink access request signal or response signal sent by the terminal; sending a wake-up signal to the terminal and receiving a response signal sent by the terminal; sending a downlink reference signal to the terminal and receiving measurement results sent by the terminal, wherein the downlink reference signal includes a Channel State Information Reference Signal (CSI-RS) and the measurement results include Channel State Information (CSI); sending downlink signaling to the terminal and receiving an acknowledgment character (ACK) sent by the terminal; sending downlink service data to the terminal and receiving a response signal sent by the terminal; receiving a charging termination request sent by the terminal and sending an acknowledgment character (ACK) to the terminal; receiving an uplink access request sent by the terminal and sending a response signal to the terminal; receiving an uplink data transmission request sent by the terminal, sending a response signal to the terminal, and allocating uplink transmission resources to the terminal.

[0140] Figure 16 is a structural block diagram of a terminal according to an embodiment of the present disclosure. As shown in Figure 16, the device 1600 includes:

[0141] The second energy module 1602 is configured to receive radio frequency energy signals periodically transmitted by the base station, wherein the transmission interval of the radio frequency energy signals is the data transmission period;

[0142] The second data module 1604 is configured to transmit data signals during the data transmission cycle.

[0143] In this embodiment, the second data module 1604 is further configured to transmit data signals during the data transmission cycle, including at least one of the following: receiving downlink data signals sent by the base station during the data transmission cycle, and sending uplink data signals to the base station during the data transmission cycle.

[0144] In one embodiment, the second data module 1604 is further configured to transmit data signals during the data transmission cycle in one of the following ways: if downlink data signals are successfully received, send an acknowledgment character ACK to the base station; if downlink data signals cannot be received due to insufficient energy, receive downlink data signals retransmitted by the base station during the data transmission cycle or a preset data transmission cycle after the data transmission cycle, and send an acknowledgment character ACK to the base station.

[0145] In one embodiment, the second data module 1604 is further configured to send an uplink data signal carrying indication information to the base station and receive a radio frequency energy signal sent by the base station during the transmission gap of the uplink data signal. The indication information includes: whether a radio frequency energy signal is sent to the terminal during the transmission gap of the uplink data signal, and the time domain length and location of the radio frequency energy signal.

[0146] In one embodiment, the second data module 1604 is further configured to, when insufficient power prevents the transmission of uplink data signals to the base station, send a short signal to the base station on the time-frequency resources or a portion of the time-frequency resources of the uplink data signal before or during transmission, and receive additional transmission resources allocated by the base station during or after a preset data transmission period. The short signal includes one of the following: uplink control signaling, used to notify the base station terminal that it cannot transmit uplink data signals due to insufficient power; the terminal's energy information; a preamble to the uplink data signal, including identification information; a portion of the uplink data signal data; the amount of uplink data signal data; and an energy transmission request, used by the terminal to request the base station to transmit a radio frequency energy signal.

[0147] In one embodiment, a guard interval exists between the radio frequency energy signal and the data transmission cycle.

[0148] In one embodiment, the device 1600 includes:

[0149] The receiving module is configured to receive trigger signals sent by the base station to detect when a data transmission cycle is about to begin.

[0150] In one embodiment, the second data module 1604 is further configured to send an uplink data signal to the base station during the data transmission cycle in one of the following ways: sending a data transmission request to the base station, sending uplink service data to the base station, sending an uplink reference signal to the base station so that the base station can perform channel detection or beam calibration, sending a beam calibration request to the base station, sending a power termination request to the base station so that the base station can stop power supply after receiving the power termination request, and sending an uplink access request to the base station.

[0151] In one embodiment, the second data module 1604 is further configured to transmit data signals during the data transmission cycle in one of the following ways: sending a paging signal to the terminal and receiving an uplink access request signal or response signal from the terminal; sending a wake-up signal to the terminal and receiving a response signal from the terminal; sending a downlink reference signal to the terminal and receiving reported measurement results from the terminal; sending downlink signaling to the terminal and receiving an acknowledgment character ACK from the terminal; sending downlink service data to the terminal and receiving a response signal from the terminal; receiving a charging termination request from the terminal and sending an acknowledgment character ACK to the terminal; receiving an uplink access request from the terminal and sending a response signal to the terminal; receiving an uplink data transmission request from the terminal, sending a response signal to the terminal, and allocating uplink transmission resources to the terminal.

[0152] It should be noted that the above modules can be implemented by software or hardware. For the latter, they can be implemented in the following ways, but are not limited to: all the above modules are located in the same processor; or, the above modules are located in different processors in any combination.

[0153] Embodiments of this disclosure also provide a computer-readable storage medium storing a computer program configured to perform the steps in any of the above method embodiments when executed.

[0154] In one exemplary embodiment, the aforementioned computer-readable storage medium may include, but is not limited to, various media capable of storing computer programs, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard disk, magnetic disk, or optical disk.

[0155] Embodiments of this disclosure also provide an electronic device including a memory and a processor, the memory storing a computer program and the processor being configured to run the computer program to perform the steps in any of the above method embodiments.

[0156] In one exemplary embodiment, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor and the input / output device is connected to the processor.

[0157] Specific examples in this embodiment can be found in the examples described in the above embodiments and exemplary implementations, and will not be repeated here.

[0158] Embodiments of this disclosure also provide a computer program product, including computer instructions that, when executed by a processor, implement the steps in any of the above method embodiments.

[0159] Embodiments of this disclosure also provide a computer program product, including a non-volatile computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the methods in various embodiments of this disclosure.

[0160] It is obvious to those skilled in the art that the modules or steps of this disclosure described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those presented herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, this disclosure is not limited to any particular combination of hardware and software.

[0161] The above are merely preferred embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A method for wireless energy transmission, applied to a base station, comprising: periodically transmitting a radio frequency energy signal to a terminal, wherein a transmission gap of the radio frequency energy signal is a data transmission period; transmitting a data signal in the data transmission period.

2. The method of claim 1, wherein, The transmitting of the data signal in the data transmission period comprises at least one of: transmitting a downlink data signal to the terminal in the data transmission period; receiving an uplink data signal transmitted by the terminal in the data transmission period.

3. The method of claim 2, wherein, After transmitting the downlink data signal to the terminal in the data transmission period, the method comprises: starting a timer and listening for an acknowledgement character (ACK) transmitted by the terminal; in a case where the ACK is not received within a predetermined time, determining that the transmission of the downlink data signal fails, otherwise determining that the transmission of the downlink data signal succeeds.

4. The method of claim 3, wherein, In a case where the ACK is not received within a predetermined time, the method further comprises: retransmitting the downlink data signal to the terminal in the data transmission period or a preset data transmission period after the data transmission period until the terminal successfully receives the downlink data signal and transmits the ACK within a preset retransmission number of times.

5. The method of claim 2, wherein, The receiving of the uplink data signal transmitted by the terminal in the data transmission period comprises: transmitting the radio frequency energy signal to the terminal in a transmission gap of the uplink data signal according to preconfigured information of the base station or an uplink data signal carrying indication information transmitted by the terminal.

6. The method of claim 5, wherein, The preconfigured information or the indication information comprises: whether to transmit the radio frequency energy signal to the terminal in the transmission gap of the uplink data signal, a time domain length and a position of the radio frequency energy signal.

7. The method of claim 2, wherein, The transmitting of the data signal in the data transmission period comprises: receiving a short signal transmitted by the terminal on a time-frequency resource or a partial time-frequency resource of the uplink data signal; allocating an additional transmission resource to the terminal in the data transmission period or a preset data transmission period after the data transmission period.

8. The method of claim 7, wherein, The short signal comprises one of: uplink control signaling, wherein the uplink control signaling is used to inform the base station that the terminal cannot transmit the uplink data signal due to insufficient energy; energy information of the terminal; a preamble of the uplink data signal, wherein the preamble comprises identity information of the terminal; partial data of the uplink data signal; a data amount of the uplink data signal; an energy transmission request, wherein the energy transmission request is used for the terminal to request the base station to transmit the radio frequency energy signal.

9. The method of claim 1, wherein, There is a guard interval between the radio frequency energy signal and the data transmission period.

10. The method of claim 1, wherein, Before the transmitting of the data signal in the data transmission period, the method comprises: determining a trigger signal according to a correspondence between the data transmission period and the trigger signal; transmitting the trigger signal to the terminal to inform the terminal that the data transmission period is about to start.

11. The method of claim 10, wherein, The determining of the trigger signal according to the correspondence between the data transmission period and the trigger signal comprises: dividing the data transmission period into a preset number of time units, and determining a data signal transmission mode for each of the time units, wherein the transmission mode comprises: downlink transmission, uplink transmission, data transmission, or no data transmission; determining a corresponding trigger signal according to the data signal transmission mode of the preset number of time units of the data transmission period; preconfiguring a correspondence between the data transmission period and the trigger signal in the terminal, or sending the correspondence to the terminal through a broadcast message or downlink signaling.

12. The method of claim 11, wherein, determining a corresponding trigger signal according to the data signal transmission mode of the preset number of time units of the data transmission period comprises: determining at least one of a waveform, a sequence, and a time-frequency resource of the trigger signal.

13. The method of claim 2, wherein, sending downlink data signals to the terminal in the data transmission period comprises at least one of: sending a wake-up signal to the terminal in the data transmission period; sending at least one of the following to the terminal in the data transmission period: a paging signal, a synchronization signal, downlink signaling, a downlink reference signal, or other service data.

14. The method of claim 2, wherein, transmitting data signals in the data transmission period comprises at least one of: sending a paging signal to the terminal and receiving an uplink access request signal or a response signal sent by the terminal; sending a wake-up signal to the terminal and receiving a response signal sent by the terminal; sending a downlink reference signal to the terminal and receiving a measurement result sent by the terminal, wherein the downlink reference signal comprises a channel state information reference signal (CSI-RS), and the measurement result comprises channel state information (CSI); sending downlink signaling to the terminal and receiving an acknowledgement character (ACK) sent by the terminal; sending downlink service data to the terminal and receiving a response signal sent by the terminal; receiving a charging termination request sent by the terminal and sending an acknowledgement character (ACK) to the terminal; receiving an uplink access request sent by the terminal and sending a response signal to the terminal; receiving an uplink data transmission request sent by the terminal, sending a response signal to the terminal, and allocating an uplink transmission resource to the terminal.

15. A wireless energy transmission method applied to a terminal, comprising: receiving a radio frequency energy signal periodically sent by a base station, wherein a transmission gap of the radio frequency energy signal is a data transmission period; transmitting data signals in the data transmission period.

16. The method of claim 15, wherein, transmitting data signals in the data transmission period comprises at least one of: receiving downlink data signals sent by the base station in the data transmission period; sending uplink data signals to the base station in the data transmission period.

17. The method of claim 16, wherein, transmitting data signals in the data transmission period comprises at least one of: in the case of successfully receiving the downlink data signals, sending an acknowledgement character (ACK) to the base station; in the case of insufficient energy to receive the downlink data signals, receiving the downlink data signals retransmitted by the base station in the data transmission period or a preset data transmission period after the data transmission period, and sending an acknowledgement character (ACK) to the base station.

18. The method of claim 16, wherein, sending uplink data signals to the base station in the data transmission period comprises: sending an uplink data signal carrying indication information to the base station; receiving the radio frequency energy signal sent by the base station in the transmission gap of the uplink data signal.

19. The method of claim 18, wherein, The indication information includes: whether to send the radio frequency energy signal to the terminal in the transmission gap of the uplink data signal, the time domain length and position of the radio frequency energy signal.

20. The method of claim 16, wherein, transmitting a data signal in the data transmission period includes: In the case of insufficient energy to send an uplink data signal to the base station, a short signal is sent to the base station on the time-frequency resource or part of the time-frequency resource of the uplink data signal before or during the transmission of the uplink data signal; receiving the additional transmission resource allocated by the base station in the data transmission period or the preset data transmission period after the data transmission period.

21. The method of claim 20, wherein, The short signal includes one of the following: uplink control signaling, wherein the uplink control signaling is used to inform the base station that the terminal cannot send the uplink data signal due to insufficient energy; energy information of the terminal; preamble of the uplink data signal, wherein the preamble includes identity information; part of the data of the uplink data signal; data volume of the uplink data signal; energy transmission request, wherein the energy transmission request is used for the terminal to request the base station to send the radio frequency energy signal.

22. The method of claim 15, wherein, There is a guard interval between the radio frequency energy signal and the data transmission period.

23. The method of claim 15, wherein, Before transmitting a data signal in the data transmission period, the method includes: receiving a trigger signal sent by the base station to know that the data transmission period is about to start.

24. The method of claim 16, wherein, Sending an uplink data signal to the base station in the data transmission period includes one of the following: sending a data transmission request to the base station; sending uplink service data to the base station; sending an uplink reference signal to the base station to enable the base station to perform channel sounding or beam calibration; sending a beam calibration request to the base station; sending a charging termination request to the base station to make the base station stop energy supply after receiving the charging termination request; sending an uplink access request to the base station.

25. The method of claim 16, wherein, Transmitting a data signal in the data transmission period includes one of the following: sending a paging signal to the terminal, receiving an uplink access request signal or response signal sent by the terminal; sending a wake-up signal to the terminal, receiving a response signal sent by the terminal; sending a downlink reference signal to the terminal, receiving a measurement result reported by the terminal; sending a downlink signaling to the terminal, receiving an acknowledgement character ACK sent by the terminal; sending downlink service data to the terminal, receiving a response signal sent by the terminal; receiving a charging termination request sent by the terminal, sending an acknowledgement character ACK to the terminal; receiving an uplink access request sent by the terminal, sending a response signal to the terminal; receiving an uplink data transmission request sent by the terminal, sending a response signal to the terminal and allocating uplink transmission resource to the terminal.

26. A base station, comprising: a first energy module configured to periodically send a radio frequency energy signal to a terminal, wherein the transmission gap of the radio frequency energy signal is a data transmission period; a first data module configured to transmit a data signal during the data transmission period.

27. A terminal comprising: a second energy module configured to receive a radio frequency energy signal periodically transmitted by a base station, wherein the radio frequency energy signal has a transmission gap that is a data transmission period; a second data module configured to transmit a data signal during the data transmission period.

28. A computer readable storage medium having stored therein a computer program, wherein, The computer program, which is executed by a processor, implements the steps of the method as claimed in any one of claims 1 to 14, or the steps of the method as claimed in any one of claims 15 to 25.

29. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor, when executing the computer program, implements the steps of the method as claimed in any one of claims 1 to 14, or the steps of the method as claimed in any one of claims 15 to 25.

30. A computer program product comprising a computer program, which, when executed by a processor, implements the steps of the method as claimed in any one of claims 1 to 14, or the steps of the method as claimed in any one of claims 15 to 25.

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