Backscatter communication method and related equipment

Abstract

The invention provides a backscatter communication method and related equipment, and relates to the technical field of wireless communication. The method comprises the following steps: receiving the total amount of service data to be transmitted and an environment energy storage value sent by a backscattering terminal; determining a required energy value according to the total amount of the to-be-transmitted service data; under the condition that the required energy value is smaller than the environment energy storage value, the working mode of backscatter communication is determined to be a first communication mode, working mode information is sent to the backscatter terminal so that the backscatter terminal can conduct backscatter communication according to the first communication mode, and the working mode information comprises the first communication mode and the second communication mode. The first communication mode is to transmit all to-be-transmitted service data at one time through the stored environment energy. According to the invention, the energy loss of the backscattering terminal is saved, and the energy loss of the network equipment is also saved.

Description

Background Art

[0002] Backscatter Communication is a low-power, high-efficiency wireless communication technology that does not rely on traditional active transmission signals, but instead uses the excitation carrier signal of network equipment for data transmission. By reflecting and modulating these external signals, backscatter terminals can communicate with extremely low power consumption.

[0003] How to further save the energy loss of network equipment and backscatter terminals is an urgent problem to be solved.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] The present disclosure provides a backscatter communication method, device, electronic device, computer-readable storage medium and computer program product, which further save energy loss of network equipment and backscatter terminals at least to a certain extent.

[0006] Other features and advantages of the present disclosure will become apparent from the following detailed description, or may be learned in part by the practice of the present disclosure.

[0007] According to one aspect of the present disclosure, there is provided a backscatter communication method, which is applied to a network device, and the method comprises: receiving a total amount of business data to be transmitted and an environmental energy storage value sent by a backscatter terminal; determining a required energy value according to the total amount of business data to be transmitted; and determining that the working mode of the backscatter communication is a first communication mode when the required energy value is less than the environmental energy storage value, and sending working mode information to the backscatter terminal, so that the backscatter terminal performs backscatter communication according to the first communication mode, wherein the working mode information includes the first communication mode, and the first communication mode is to transmit all the business data to be transmitted at one time through the stored environmental energy.

[0008] In one embodiment of the present disclosure, the method further includes: when the required energy value is greater than the environmental energy storage value, obtaining the radio frequency energy collection capability of the backscatter terminal, and determining a first data amount of the business data to be transmitted for the first transmission based on the environmental energy storage value and the radio frequency energy collection capability; when the total amount of the business data to be transmitted is less than the first data amount, determining that the working mode of the backscatter communication is a second communication mode, and wireless power supply for a first duration is performed to the backscatter terminal, and working mode information is sent to the backscatter terminal so that the backscatter terminal performs backscatter communication according to the second communication mode, and the energy for the wireless power supply is radio frequency energy; wherein the working mode information includes the second communication mode, and the second communication mode is to transmit all the business data to be transmitted at one time through the radio frequency energy and the stored environmental energy.

[0009] In one embodiment of the present disclosure, the method further includes: when the total amount of business data to be transmitted is greater than the first data amount, determining that the working mode of backscatter communication is a third communication mode; determining the number of transmissions and the second data amount according to the total amount of business data to be transmitted, the first data amount and the unit data amount, the unit data amount being the maximum amount of business data that can be transmitted by the backscatter terminal after wireless power supply for the first duration, the second data amount being the amount of business data transmitted by the backscatter terminal for the last time, and the number of transmissions being the difference between the total number of transmissions and 1; sending working mode information to the backscatter terminal so that the backscatter terminal performs wireless power supply according to the third communication mode. Backscatter communication is performed, and the working mode information includes the first data amount, the number of transmissions, the unit data amount, the second data amount and the third communication mode; wherein the third communication mode is that the first data amount of the to-be-transmitted business data is transmitted by the radio frequency energy and the stored ambient energy for the first time, the second data amount of the to-be-transmitted business data is transmitted by the radio frequency energy for the last time, and the unit data amount of the to-be-transmitted business data is transmitted by radio frequency energy each time in the middle Z times, Z is the difference between the number of transmissions and 1, and before the backscatter terminal transmits the to-be-transmitted business data each time in the next Z+1 times, the network device performs wireless power supply for the first duration to the backscatter terminal.

[0010] In one embodiment of the present disclosure, before the receiving the total amount of business data to be transmitted and the environmental energy storage value sent by the backscatter terminal, the method also includes: sending a data request message to the backscatter terminal; wherein, according to the total amount of business data to be transmitted, determining the required energy value includes: after receiving the total amount of business data to be transmitted and the environmental energy storage value sent by the backscatter terminal within the second time period, executing the determination of the required energy value according to the total amount of business data to be transmitted.

[0011] In one embodiment of the present disclosure, the method further includes: if the total amount of to-be-transmitted service data and the environmental energy storage value sent by the backscatter terminal are not received within a second time period, executing the following steps: wirelessly supplying power to the backscatter terminal for a third time period; and resending the data request message to the backscatter terminal.

[0012] In one embodiment of the present disclosure, after the data request message is resent to the backscatter terminal, the method further includes: receiving the total amount of business data to be transmitted and the radio frequency energy storage value sent by the backscatter terminal; determining the required energy value according to the total amount of business data to be transmitted; and when the required energy value is less than the radio frequency energy storage value, determining that the working mode of the backscatter communication is a fourth communication mode, and sending working mode information to the backscatter terminal so that the backscatter terminal performs backscatter communication according to the fourth communication mode, wherein the working mode information includes the fourth communication mode, and the fourth communication mode is to transmit all the business data to be transmitted at one time through radio frequency energy.

[0013] In one embodiment of the present disclosure, the method further includes: when the required energy value is less than the RF energy storage value, determining that the working mode of the backscatter communication is the fifth communication mode; determining the total number of transmissions and the third data according to the total amount of business data to be transmitted and the unit data amount, wherein the unit data amount is the maximum amount of business data that can be transmitted by the backscatter terminal after the wireless power supply for the third duration, and the third data amount is the amount of business data transmitted by the backscatter terminal for the last time; sending working mode information to the backscatter terminal so that the backscatter terminal performs backscatter communication according to the fifth communication mode; wherein the working mode information includes the total number of transmissions, the unit data amount, the third data amount and the fifth communication mode, wherein the fifth communication mode is each of the previous Y times in which the business data to be transmitted of the unit data amount is transmitted by RF energy, and the business data to be transmitted of the third data amount is transmitted by RF energy for the last time, and Y is the difference between the total number of transmissions and 1, and before the backscatter terminal transmits the business data to be transmitted each time, the network device performs the wireless power supply for the third duration on the backscatter terminal.

[0014] According to another aspect of the present disclosure, there is provided a backscatter communication method, which is applied to a backscatter terminal, and the method includes: receiving a data request message sent by a network device; sending a total amount of business data to be transmitted and an energy storage value to the network device, so that the network device determines a working mode of the backscatter communication according to the total amount of business data to be transmitted and the energy storage value, wherein the energy storage value includes a radio frequency energy storage value and / or an environmental energy storage value; receiving working mode information sent by the network device; and performing backscatter communication according to the working mode information.

[0015] In one embodiment of the present disclosure, the working mode information includes a first communication mode, and the first communication mode is to transmit all the business data to be transmitted at one time through the stored environmental energy.

[0016] In one embodiment of the present disclosure, the working mode information includes a second communication mode, and the second communication mode is to transmit all the business data to be transmitted at one time through radio frequency energy and stored environmental energy.

[0017] In one embodiment of the present disclosure, the working mode information includes a first data volume, a transmission number, a unit data volume, a second data volume and a third communication mode, wherein the first data volume is the data volume of the business data to be transmitted by the backscatter terminal for the first time, the first data volume is determined by the network device according to the environmental energy storage value and the radio frequency energy collection capability, the transmission number is the difference between the total transmission number and 1, the unit data volume is the maximum business data volume that the backscatter terminal can transmit after the first duration of wireless power supply, and the second data volume is the business data volume transmitted by the backscatter terminal for the last time; wherein the third communication mode is the first transmission of the business data to be transmitted of the first data volume through radio frequency energy and stored environmental energy, the last transmission of the business data to be transmitted of the second data volume through the radio frequency energy, each of the intermediate Z times transmits the business data to be transmitted of the unit data volume through radio frequency energy, Z is the difference between the transmission number and 1, and before each transmission of the business data to be transmitted in the next Z+1 times, the network device performs the first duration of wireless power supply on the backscatter terminal.

[0018] In one embodiment of the present disclosure, the working mode information includes a fourth communication mode, and the fourth communication mode is to transmit all the business data to be transmitted at one time through radio frequency energy.

[0019] In one embodiment of the present disclosure, the working mode information includes the total number of transmissions, the unit data amount, the third data amount and the fifth communication mode, the unit data amount is the maximum business data amount that can be transmitted by the backscatter terminal after the third duration of wireless power supply, and the third data amount is the business data amount transmitted by the backscatter terminal for the last time; wherein, the fifth communication mode is each of the previous Y times to transmit the unit data amount of business data to be transmitted by radio frequency energy, and the last time to transmit the third data amount of business data to be transmitted by radio frequency energy, Y is the difference between the total number of transmissions and 1, and before the backscatter terminal transmits the business data to be transmitted each time, the network device performs wireless power supply for the third duration on the backscatter terminal.

[0020] According to another aspect of the present disclosure, there is provided a backscatter communication apparatus, which is applied to a network device, and includes: a first receiving module, which is used to receive the total amount of business data to be transmitted and an environmental energy storage value sent by a backscatter terminal; a determining module, which is used to determine a required energy value based on the total amount of business data to be transmitted; the determining module is also used to determine, when the required energy value is less than the environmental energy storage value, that the working mode of the backscatter communication is a first communication mode, and to send working mode information to the backscatter terminal, so that the backscatter terminal performs backscatter communication according to the first communication mode, wherein the working mode information includes the first communication mode, and the first communication mode is to transmit all the business data to be transmitted at one time through the stored environmental energy.

[0021] According to another aspect of the present disclosure, there is provided a backscatter communication device, which is applied to a backscatter terminal, and includes: a second receiving module, which is used to receive a data request message sent by a network device; a sending module, which is used to send the total amount of business data to be transmitted and an energy storage value to the network device, so that the network device determines the working mode of the backscatter communication according to the total amount of business data to be transmitted and the energy storage value, and the energy storage value includes a radio frequency energy storage value and / or an environmental energy storage value; the second receiving module is also used to receive the working mode information sent by the network device; and a communication module is used to perform backscatter communication according to the working mode information.

[0022] According to another aspect of the present disclosure, an electronic device is provided, comprising: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to perform any of the above-mentioned backscatter communication methods by executing the executable instructions.

[0023] According to another aspect of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, any of the above-mentioned backscatter communication methods is implemented.

[0024] According to another aspect of the present disclosure, a computer program product is provided, the computer program product comprising a computer program or computer instructions, the computer program or the computer instructions being loaded and executed by a processor so that a computer implements any of the above-mentioned backscatter communication methods.

[0025] In an embodiment of the present disclosure, a network device receives the total amount of business data to be transmitted and the environmental energy storage value sent by a backscatter terminal; determines the required energy value based on the total amount of business data to be transmitted; when the required energy value is less than the environmental energy storage value, determines that the working mode of the backscatter communication is the first communication mode, and sends working mode information to the backscatter terminal, so that the backscatter terminal performs backscatter communication according to the first communication mode, wherein the working mode information includes the first communication mode, and the first communication mode is to transmit all the business data to be transmitted at one time through the stored environmental energy. The network device of the present disclosure determines the working mode of the backscatter terminal based on the total amount of business data to be transmitted and the environmental energy storage value of the backscatter terminal, and sends the working mode information to the backscatter terminal, so that the backscatter terminal transmits all the business data to be transmitted at one time through the stored environmental energy, and transmits the business data to be transmitted through the environmental energy, thereby saving the energy loss of the backscatter terminal. The backscatter terminal uses the stored environmental energy to transmit data, saving the energy loss of the network device.

[0026] In addition, the network equipment determines the working mode according to the total amount of business data to be transmitted and the energy storage value, which is highly flexible and applicable to a wide range of situations. The network equipment turns on the wireless power supply mode on demand, which can further save the energy and resources of the network equipment. The working mode of the backscatter terminal is determined by the network equipment, which further saves the energy consumption of the backscatter terminal.

[0027] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0029] Figure 1 A schematic diagram showing a backscatter communication system architecture in an embodiment of the present disclosure is shown.

[0030] Figure 2 A diagram showing the composition of a backscatter terminal in an embodiment of the present disclosure is shown.

[0031] Figure 3 A flow chart of a backscatter communication method in an embodiment of the present disclosure is shown.

[0032] Figure 4 A schematic diagram of the first communication mode in an embodiment of the present disclosure is shown.

[0033] Figure 5 A schematic diagram of the second communication mode in an embodiment of the present disclosure is shown.

[0034] Figure 6 A schematic diagram of a third communication mode in an embodiment of the present disclosure is shown.

[0035] Figure 7 A schematic diagram of a fourth communication mode in an embodiment of the present disclosure is shown.

[0036] Figure 8 A schematic diagram of the fifth communication mode in an embodiment of the present disclosure is shown.

[0037] Fig. 9 A flow chart of a backscatter communication method in another embodiment of the present disclosure is shown.

[0038] Fig.10 A signaling diagram of a backscatter communication method in an embodiment of the present disclosure is shown.

[0039] Fig.11 A schematic diagram of a backscatter communication device in an embodiment of the present disclosure is shown.

[0040] Fig.12 A schematic diagram of a backscatter communication device in another embodiment of the present disclosure is shown.

[0041] Fig.13 A structural block diagram of an electronic device in an embodiment of the present disclosure is shown.

[0042] Fig.14 A schematic diagram of a computer-readable storage medium provided in an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0043] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the disclosure will be more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0044] In addition, the accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and their repeated description will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities can be implemented in software form, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.

[0045] It should be understood that the various steps described in the method embodiments of the present disclosure may be performed in different orders and / or in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present disclosure is not limited in this respect.

[0046] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0047] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0048] Backscatter technology refers to the backscatter device (BD) that modulates the incident signal, carries the information to be transmitted (service data to be transmitted) on the signal, and reflects it back to the network device. The inventors have found that the backscatter terminal can collect energy from the environment (such as radio frequency energy, solar energy, vibration energy, etc.), and use the collected energy to support the modulation and coding of its own system. Compared with active transmission, it can save energy consumption and achieve extremely low power transmission. The incident signal can be provided by the network device (such as a base station) sending an excitation carrier.

[0049] In terms of energy collection, solar energy is a more mature and efficient method, and BD can decouple energy collection and communication, that is, the solar energy collection module on the BD can always be in the starting state, and the BD can be ready for communication at any time. It should be noted that if the RF energy supply method is used, the BD needs to be powered by RF first, and then communication and other work can be carried out.

[0050] The BD in the present disclosure can be equipped with two energy collection methods: natural energy (such as solar energy) and radio frequency energy. It can support the transmission of multiple sensory information, such as integrating multiple sensors to transmit temperature, pressure, small data volume images, low frame rate videos and other information; in addition, it can use radio frequency energy to work when there is no natural energy.

[0051] The present disclosure provides a specific process method for selecting different energy sources for energy collection and communication, which can ensure the complete transmission of the business data to be transmitted and save the power consumption and resources of network equipment and BD.

[0052] It should be pointed out that, in the absence of conflict, the embodiments of the present disclosure and the technical features therein may be combined with each other.

[0053] The specific implementation of the embodiment of the present disclosure is described in detail below with reference to the accompanying drawings.

[0054] Figure 1 A schematic diagram of a backscatter communication system structure in an embodiment of the present disclosure is shown, and the system can apply the backscatter communication method or backscatter communication device in each embodiment of the present disclosure.

[0055] like Figure 1 As shown, the system architecture may include a network device 101 and a backscatter terminal 102 .

[0056] The network device 101 and the backscatter terminal 102 are connected wirelessly. Exemplarily, the network device 101 is a base station, and the backscatter terminal 102 is a BD equipped with a dual energy collection function, which can collect natural energy and radio frequency energy. The base station transmits a downlink control signal to the backscatter terminal 102, provides an excitation carrier for the backscatter terminal 102 communication, receives an uplink signal, maintains normal communication with the backscatter terminal 102, and turns on the radio frequency power supply function as needed to charge the backscatter terminal 102. It should be noted that the base station can charge the backscatter terminal 102 through the functional carrier.

[0057] like Figure 2 As shown, the backscatter terminal 102 may include a natural energy collection module, a radio frequency energy collection module, an energy management module and a backscatter communication module. Among them, the natural energy collection module can collect one or more of solar energy, vibration energy and temperature difference energy. The radio frequency energy collection module is used to obtain the radio frequency energy provided by the network device 101. The energy management module can evaluate its own energy storage level, perform energy collection according to instructions and other operations. The backscatter communication module completes the communication function with the network device 101. Exemplarily, the network device 101 is a base station, and the base station sends a downlink control signal to the backscatter terminal 102, and the backscatter terminal 102 receives the downlink control signal and carries the base station incident carrier to backscatter uplink information.

[0058] The backscatter terminal 102 may be a variety of electronic devices, including but not limited to a smart phone, a tablet computer, a laptop computer, a desktop computer, a wearable device, an augmented reality device, a virtual reality device, etc.

[0059] The network device 101 may be a base station, a relay or an access point, etc. The base station may be a base station of 5G or later versions (e.g., 5G NR NB), or a base station in other communication systems (e.g., an eNB base station). It should be noted that the specific type of the network device is not limited in the embodiments of the present disclosure.

[0060] Those skilled in the art will know that Figure 1 The number of network devices and backscatter terminals in the figure is only for illustration, and any number of network devices and backscatter terminals may be provided according to actual needs. The embodiments of the present disclosure are not limited to this.

[0061] The present exemplary implementation is described in detail below with reference to the accompanying drawings and embodiments.

[0062] First, a backscatter communication method is provided in an embodiment of the present disclosure, and the method can be executed by any network device with computing and processing capabilities.

[0063] Figure 3 A flow chart of a backscatter communication method in an embodiment of the present disclosure is shown as follows: Figure 3 As shown, applied to a network device, the backscatter communication method provided in the embodiment of the present disclosure may include the following S301 to S303.

[0064] S301, receiving the total amount of service data to be transmitted and the environmental energy storage value sent by the backscatter terminal.

[0065] In the disclosed embodiment, the total amount of business data to be transmitted is the total amount of business data to be transmitted by the backscatter terminal, which is used to characterize the size of the quantity. The environmental energy storage value is used to indicate the amount of environmental energy stored on the backscatter terminal. Exemplarily, the backscatter terminal evaluates the amount of its own energy storage through the energy management module to determine the environmental energy storage value.

[0066] Ambient energy refers to various forms of energy that exist in the natural environment at any time and can be collected and converted into usable electrical energy. For example, ambient energy can be radio frequency energy, solar energy, vibration energy, etc. Depending on different conditions, different ambient energy (natural energy) can be selected for storage. For example, in a sunny environment, solar energy can be stored.

[0067] S302: Determine the required energy value according to the total amount of business data to be transmitted.

[0068] In the disclosed embodiment, the required energy value is used to indicate the energy value required by the backscatter terminal to carry all the service data to be transmitted onto the incident carrier (excitation carrier) sent by the network device.

[0069] S303, when the required energy value is less than the environmental energy storage value, determine that the working mode of the backscatter communication is the first communication mode, and send working mode information to the backscatter terminal so that the backscatter terminal performs backscatter communication according to the first communication mode, wherein the working mode information includes the first communication mode, and the first communication mode is to transmit all the business data to be transmitted at one time through the stored environmental energy.

[0070] In the disclosed embodiment, the required energy value is less than the ambient energy storage value, indicating that the natural energy stored in the backscatter terminal is sufficient to carry all the service data to be transmitted onto the excitation carrier, and the backscatter terminal adopts the first communication mode for backscatter communication.

[0071] For example, Figure 4 As shown, the natural energy stored in the backscatter terminal is sufficient for the backscatter terminal to perform backscatter communication. The backscatter terminal does not need to wait for RF wireless power supply, and all the business data to be transmitted can be transmitted at one time through the stored environmental energy D total , that is, the backscatter terminal performs backscatter communication according to the first communication mode.

[0072] It should be noted that when the required energy value is equal to the ambient energy storage value, according to the actual application scenario and specific application experience, the backscatter terminal can choose the first communication mode for communication, and can also choose the second communication mode or the third communication mode for communication.

[0073] In the disclosed embodiment, backscatter communication is performed by using the natural energy stored on the backscatter terminal, and all the business data to be transmitted is transmitted at one time, which not only saves the energy loss of the network device (because the network device does not need to perform the radio frequency function, the energy of the network device is saved), but also increases the transmission speed of the business data. In addition, the communication mode of the backscatter terminal is determined by the network device, and the calculation is completed on the network device, thereby further saving the energy loss of the backscatter terminal.

[0074] The present disclosure is further described below through exemplary embodiments.

[0075] In an exemplary embodiment, the method provided by the present disclosure may further include the following steps A1 and A2.

[0076] Step A1, when the required energy value is greater than the environmental energy storage value, obtain the RF energy collection capability of the backscatter terminal, and determine the first data volume of the service data to be transmitted for the first time according to the environmental energy storage value and the RF energy collection capability.

[0077] In the disclosed embodiments, the RF energy collection capability is used to indicate the ability of the backscatter terminal to store RF energy, that is, the maximum RF energy that the backscatter terminal can store when the backscatter terminal is wirelessly powered by a network device (for example, using a power carrier for powering).

[0078] It should be noted that in the present disclosure, the network device knows in advance the working cycle of the backscatter terminal, that is, the network device can periodically send broadcast signals and excite carriers to the backscatter terminal, and has obtained the hardware capabilities of the backscatter terminal. For example, the network device can evaluate the amount of service data that can be transmitted based on the stored energy of the backscatter terminal, and can also determine the required energy value based on the total amount of service data to be transmitted; know the amount of energy that can be collected by the backscatter terminal RF wireless power supply (RF energy collection capability), the wireless power supply demand collection time t and the corresponding maximum amount of data to be sent D m (unit data volume).

[0079] In the disclosed embodiment, the required energy value is greater than the ambient energy storage value, indicating that the natural energy stored in the backscatter terminal is insufficient to carry all the business data to be transmitted onto the excitation carrier. The amount of business data to be transmitted that can be transmitted by the backscatter terminal after one wireless power supply (referred to as the unit data amount) can be determined based on the RF energy collection capability. The first data amount is the sum of the amount of business data to be transmitted that can be transmitted by the ambient energy storage value and the unit data amount.

[0080] Step A2, when the total amount of business data to be transmitted is less than the first data amount, determine that the working mode of backscatter communication is the second communication mode, and wireless power supply for a first duration is performed to the backscatter terminal, and working mode information is sent to the backscatter terminal so that the backscatter terminal performs backscatter communication according to the second communication mode, and the energy of the wireless power supply is radio frequency energy; wherein the working mode information includes the second communication mode, and the second communication mode is to transmit all the business data to be transmitted at one time through radio frequency energy and stored environmental energy.

[0081] In the disclosed embodiment, the total amount of business data to be transmitted is less than the first data amount, which means that after one wireless power supply, all the business data to be transmitted can be carried on the reflected signal (the signal that returns to the network device after the excitation carrier is modulated) at one time, and the backscatter terminal performs backscatter communication according to the second communication mode.

[0082] In the disclosed embodiment, the first duration can be set according to the actual application scenario and specific application experience. For example, the first duration can be sufficient time for the backscatter terminal to fully charge the radio frequency energy. For another example, the first duration can be the duration of the network device providing the functional carrier within a period.

[0083] For example, Figure 5A schematic diagram of the second communication mode in the embodiment of the present disclosure is shown as follows: Figure 5 As shown, the first data volume is D s Indicates that all business data to be transmitted is represented by D total When D total <D s When the first transmission data volume is D total , that is, the backscatter communication is completed. That is, the backscatter terminal performs backscatter communication according to the second communication mode.

[0084] It should be noted that, when the required energy value is greater than the environmental energy storage value, when the total amount of service data to be transmitted is equal to the first data amount, the backscatter terminal can select the second communication mode or the third communication mode for communication.

[0085] When the stored natural energy is insufficient, the embodiment of the present disclosure performs backscatter communication through the stored natural energy and the radio frequency energy supplied by the network device, thereby saving the energy loss of the network device. All the business data to be transmitted are loaded onto the reflected signal at one time, which can increase the speed of business data transmission.

[0086] In another exemplary embodiment, the method provided by the embodiment of the present disclosure may further include the following steps B1 to B3.

[0087] Step B1: When the total amount of service data to be transmitted is greater than the first data amount, determining the working mode of backscatter communication to be the third communication mode.

[0088] In the embodiment of the present disclosure, the first data volume is the data volume of the service data to be transmitted that can be transmitted by adding up the energy. The adding up the energy is the sum of the environmental energy stored on the backscatter terminal and the radio frequency energy for one wireless power supply.

[0089] In the disclosed embodiment, under the premise that the required energy value is greater than the environmental energy storage value, the total amount of business data to be transmitted is greater than the first data amount, indicating that the business data needs to be transmitted multiple times.

[0090] Step B2, determines the number of transmissions and the second data amount based on the total amount of business data to be transmitted, the first data amount and the unit data amount, the unit data amount is the maximum amount of business data that the backscatter terminal can transmit after wireless power supply for the first period of time, the second data amount is the amount of business data transmitted by the backscatter terminal for the last time, and the number of transmissions is the difference between the total number of transmissions and 1.

[0091] In the embodiment of the present disclosure, since the RF energy stored in the backscatter terminal after one wireless powering is certain, the amount of business data to be transmitted after each wireless powering is the unit data amount. The number of transmissions and the second data amount can be calculated based on the total amount of business data to be transmitted, the first data amount and the unit data amount.

[0092] For example, Figure 6 As shown, when D total >D s When D s The maximum amount of business data to be transmitted that can be transmitted by the current stored energy (RF energy + stored natural energy). The remaining data packets of the business data to be transmitted are transmitted by RF wireless energy supply. The number of transmissions N = Roundup [(D total -D s ) / D m ], D m is the unit data volume. Roundup is rounded up. Data packet size D m1 =D m2 =D m(N-1) =D m , the second data volume D mN =(D total -D s )-D m ×(N-1).

[0093] Step B3, sending working mode information to the backscatter terminal so that the backscatter terminal performs backscatter communication according to the third communication mode, the working mode information includes the first data amount, the number of transmissions, the unit data amount, the second data amount and the third communication mode.

[0094] In the embodiment of the present disclosure, the third communication mode is to transmit the first data amount of the business data to be transmitted through the radio frequency energy and the stored ambient energy for the first time, and to transmit the second data amount of the business data to be transmitted through the radio frequency energy for the last time, and to transmit the business data of the unit data amount through the radio frequency energy each time in the middle Z times, where Z is the difference between the number of transmissions and 1, and before the backscatter terminal transmits the business data to be transmitted each time in the next Z+1 times, the network device performs wireless energy supply for the backscatter terminal for the first duration. Wherein, Z=N-1, and Z is an integer greater than 1.

[0095] In the embodiment of the present disclosure, when the natural energy stored on the backscatter terminal and the radio frequency energy of the first wireless power supply are insufficient to transmit all the business data to be transmitted, the business data to be transmitted of the first data volume is output for the first time, and the business data to be transmitted of the second data volume is transmitted through radio frequency energy for the last time, and the business data of the unit data volume is transmitted through radio frequency energy each time in the middle Z times, thereby saving the energy loss of the network device. The working mode is determined by the network device side, thereby saving the capacity loss of the backscatter terminal.

[0096] In another exemplary embodiment, before receiving the total amount of business data to be transmitted and the environmental energy storage value sent by the backscatter terminal, the method may further include: sending a data request message to the backscatter terminal. The data request message is used to request the backscatter terminal to send the total amount of business data to be transmitted and the environmental energy storage value to the network device. It should be noted that the data request message can be sent in the form of a broadcast signal.

[0097] Among them, determining the required energy value based on the total amount of business data to be transmitted may include: after receiving the total amount of business data to be transmitted and the environmental energy storage value sent by the backscatter terminal within the second time period, determining the required energy value based on the total amount of business data to be transmitted.

[0098] The value of the second duration in the disclosed embodiment can be set according to the actual application scenario and specific application experience, and is not limited here. If the network device receives the total amount of business data to be transmitted and the environmental energy storage value sent by the backscatter terminal within the second duration, it means that there is natural energy stored in the backscatter terminal, and one of the first communication mode, the second communication mode and the third communication mode can be used for backscatter communication. The specific communication mode to be used needs to be determined according to the total amount of business data to be transmitted and the environmental energy storage value.

[0099] The disclosed embodiment determines whether natural energy is stored on the backscatter terminal by the response of the backscatter terminal to the data request message, thereby facilitating the determination of which communication mode to adopt for backscatter communication. It has high flexibility and wide applicability. The network device can turn on the wireless power supply mode as needed, which can further save the energy and resources of the network device.

[0100] In another exemplary embodiment, the method may also include: if the total amount of business data to be transmitted and the environmental energy storage value sent by the backscatter terminal are not received within the second time period, executing the following steps: wirelessly supplying power to the backscatter terminal for a third time period; and resending a data request message to the backscatter terminal.

[0101] In the disclosed embodiment, if no data is received from the backscatter terminal within the second time period, it means that no natural energy is stored in the backscatter terminal or the stored natural energy is insufficient for business data transmission, and wireless power supply is required through the network device.

[0102] In order to obtain the total amount of service data to be transmitted and the radio frequency energy storage value (the value of the energy stored by the third duration of wireless energy supply) of the backscatter terminal, wireless energy supply of the third duration is performed to the backscatter terminal. It should be noted that the specific value of the third duration is determined according to the situation of radio frequency energy storage in the backscatter terminal. For example, the third duration is equal to the first duration.

[0103] In the case where no response to a data request message is received from the backscatter device, the embodiment of the present disclosure wirelessly powers the backscatter device to prepare for obtaining the total amount of service data to be transmitted and the radio frequency energy storage value, thereby ensuring the normal backscatter communication.

[0104] The above describes backscatter communication using natural energy and a combination of natural energy and radio frequency energy. The following describes backscatter communication using radio frequency energy.

[0105] In an exemplary embodiment, after resending the data request message to the backscatter terminal, the method may further include the following steps C1 to C3.

[0106] Step C1, receiving the total amount of service data to be transmitted and the radio frequency energy storage value sent by the backscatter terminal.

[0107] In the embodiment of the present disclosure, the radio frequency energy storage value is the energy value stored after wireless power is supplied to the backscatter terminal for a third period of time.

[0108] Step C2, determining the required energy value according to the total amount of business data to be transmitted.

[0109] Step C3, when the required energy value is less than the RF energy storage value, determine that the working mode of the backscatter communication is the fourth communication mode, and send working mode information to the backscatter terminal so that the backscatter terminal performs backscatter communication according to the fourth communication mode, wherein the working mode information includes the fourth communication mode, and the fourth communication mode is to transmit all the business data to be transmitted at one time through RF energy.

[0110] It should be noted that when the required energy value is equal to the radio frequency energy storage value, the backscatter terminal can select the fourth communication mode or the fifth communication mode for communication.

[0111] In the disclosed embodiment, the required energy value is less than the RF energy storage value, indicating that the RF energy stored in the backscatter terminal after one wireless power supply is sufficient to complete the transmission of all the business data to be transmitted. That is to say, after the backscatter terminal performs wireless power supply for the third duration, all the business data to be transmitted can be carried on the reflected signal at one time, and the backscatter terminal performs backscatter communication according to the fourth communication mode.

[0112] For example, Figure 7 As shown, the radio frequency energy stored in the backscatter terminal after one wireless power supply is sufficient to complete the transmission of all the business data to be transmitted, and the backscatter terminal carries all the business data to be transmitted on the reflected signal at one time.

[0113] The network device of the disclosed embodiment turns on the wireless power supply mode on demand, which further saves the energy and resources of the network device, and transmits all the business data to be transmitted at one time, thereby improving the transmission speed of the business data.

[0114] In another exemplary embodiment, the method provided by the embodiment of the present disclosure may further include the following steps D1 to D3.

[0115] Step D1, when the required energy value is less than the radio frequency energy storage value, determining the working mode of backscatter communication to be the fifth communication mode.

[0116] Step D2, determine the total number of transmissions and the third data based on the total amount of business data to be transmitted and the unit data amount, the unit data amount is the maximum amount of business data that can be transmitted by the backscatter terminal after the third period of wireless power supply, and the third data amount is the amount of business data transmitted by the backscatter terminal for the last time.

[0117] In the embodiment of the present disclosure, since the RF energy stored in the backscatter terminal after one wireless powering is certain, the amount of business data to be transmitted after each wireless powering is the unit data amount. According to the total amount of business data to be transmitted and the unit data amount, the total number of transmissions and the third data amount can be calculated.

[0118] Exemplarily, the energy required for the fifth communication mode is all provided by radio frequency energy (for example, the network device sends an energy carrier). Figure 8 As shown, D m is the unit data volume (the amount of service data to be transmitted that the radio frequency can transmit at one time), D total is the total amount of business data to be transmitted, when D total >D m When all the business data to be transmitted D total Divided into T transmissions, the total number of transmissions T = Roundup (D total / D m ), where D m The size of depends on the backscatter terminal's radio frequency energy collection and storage capabilities, that is, the amount of data depends on the specifications of different backscatter terminals. The data packet size D of the fifth communication mode m1 =D m2 =D mi =D m(T-1) =D m , where i is an integer less than T-1, T is an integer greater than 1, and the third data volume D mT =D total -D m ×(T-1).

[0119] Step D3: sending working mode information to the backscatter terminal so that the backscatter terminal performs backscatter communication according to the fifth communication mode.

[0120] In the disclosed embodiment, the working mode information includes the total number of transmissions, the unit data volume, the third data volume and the fifth communication mode. The fifth communication mode is that each of the previous Y times transmits the unit data volume of the business data to be transmitted through radio frequency energy, and the last time the third data volume of the business data to be transmitted is transmitted through radio frequency energy. Y is the difference between the total number of transmissions and 1. Before the backscatter terminal transmits the business data to be transmitted each time, the network device performs wireless power supply to the backscatter terminal for a third period of time.

[0121] The network device of the disclosed embodiment turns on the wireless power supply mode on demand, further saving the energy and resources of the network device, and transmits all the business data to be transmitted at one time, thereby improving the transmission speed of the business data.

[0122] Based on the same inventive concept, the present disclosure also provides a backscatter communication method, as described in the following embodiments. Since the principle of solving the problem in the method embodiment is similar to that in the above method embodiment, the implementation of the method embodiment can refer to the implementation of the above method embodiment, and the repeated parts will not be repeated.

[0123] Fig. 9 A flow chart of a backscatter communication method in another embodiment of the present disclosure is shown as follows: Fig. 9 As shown, applied to a backscatter terminal, the backscatter communication method provided in the embodiment of the present disclosure may include the following S901 to S904.

[0124] S901, receiving a data request message sent by a network device.

[0125] S902, sending the total amount of business data to be transmitted and the energy storage value to the network device, so that the network device determines the working mode of backscatter communication according to the total amount of business data to be transmitted and the energy storage value, the energy storage value includes the radio frequency energy storage value and / or the environmental energy storage value.

[0126] S903: Receive working mode information sent by the network device.

[0127] S904: Perform backscatter communication according to the working mode information.

[0128] The backscatter terminal in the embodiment of the present disclosure performs backscatter communication through stored energy, thereby saving energy loss. The working mode of the backscatter terminal is determined by the network device, which can further save energy loss of the backscatter terminal.

[0129] In one embodiment, the working mode information includes a first communication mode, and the first communication mode is to transmit all the business data to be transmitted at one time through the stored environmental energy.

[0130] In another embodiment, the working mode information includes a second communication mode, and the second communication mode is to transmit all the business data to be transmitted at one time through radio frequency energy and stored environmental energy.

[0131] In still another embodiment, the working mode information includes a first data volume, a number of transmissions, a unit data volume, a second data volume and a third communication mode, the first data volume is the data volume of the backscatter terminal for the first transmission of the business data to be transmitted, the first data volume is determined by the network device according to the environmental energy storage value and the radio frequency energy collection capability, the number of transmissions is the difference between the total number of transmissions and 1, the unit data volume is the maximum business data volume that the backscatter terminal can transmit after the first duration of wireless power supply, and the second data volume is the business data volume transmitted by the backscatter terminal for the last time; wherein, the third communication mode is the first transmission of the business data to be transmitted of the first data volume through radio frequency energy and stored environmental energy, the last transmission of the business data to be transmitted of the second data volume through radio frequency energy, each of the intermediate Z times transmits the business data to be transmitted of the unit data volume through radio frequency energy, Z is the difference between the number of transmissions and 1, and before the backscatter terminal transmits the business data to be transmitted each time in the subsequent Z+1 times, the network device performs wireless power supply for the backscatter terminal for the first duration.

[0132] In yet another embodiment, the working mode information includes a fourth communication mode, and the fourth communication mode is to transmit all the business data to be transmitted at one time through radio frequency energy.

[0133] In another embodiment, the working mode information includes the total number of transmissions, the unit data amount, the third data amount and the fifth communication mode, the unit data amount is the maximum business data amount that can be transmitted by the backscatter terminal after the third period of wireless power supply, and the third data amount is the business data amount transmitted by the backscatter terminal for the last time; wherein, the fifth communication mode is each of the previous Y times that the unit data amount of the business data to be transmitted is transmitted by radio frequency energy, and the last time the third data amount of the business data to be transmitted is transmitted by radio frequency energy, Y is the difference between the total number of transmissions and 1, and before the backscatter terminal transmits the business data to be transmitted each time, the network device performs wireless power supply for the backscatter terminal for the third period of time.

[0134] The backscatter terminal in the embodiment of the present disclosure performs backscatter communication through stored energy, thereby saving energy loss. The working mode of the backscatter terminal is determined by the network device, which can further save energy loss of the backscatter terminal.

[0135] It should be noted that there are five working modes mentioned above. The network device determines that the backscatter terminal adopts one of the five working modes to perform backscatter communication, and notifies the backscatter terminal to work.

[0136] Fig.10 A signaling diagram of a backscatter communication method in an embodiment of the present disclosure is shown. Fig.10 As shown, specifically including:

[0137] S1001, the network device sends a data request message to the backscatter terminal.

[0138] S1002, the backscatter terminal sends the total amount of service data to be transmitted and the environmental energy storage to the network device within the second time period.

[0139] S1003, the network device determines the required energy value according to the total amount of business data to be transmitted.

[0140] S1004: When the required energy value is less than the environmental energy storage value, the network device determines that the working mode of the backscatter communication is the first communication mode.

[0141] S1005: The network device sends working mode information to the backscatter terminal.

[0142] S1006: The backscatter terminal performs backscatter communication according to the first communication mode.

[0143] The present disclosure is described below through specific embodiments, wherein the network device involved is a base station.

[0144] In one embodiment, the backscatter communication method may include the following steps E1 to E6.

[0145] Step E1, the base station sends a data request message. It should be noted that the data request message is sent in the form of a broadcast signal, requiring BD to access and simultaneously reporting the total amount of service data to be transmitted D total and the ambient energy storage value E n , and then sends an excitation carrier (incident carrier) for BD to transmit the service data to be transmitted;

[0146] Step E2: If the base station receives BD feedback information (total amount of service data to be transmitted and environmental energy storage value) within the second time period, then execute step E3. If the base station does not receive BD feedback information within the second time period, then execute step E4.

[0147] Step E3: The base station makes an evaluation and judgment based on D total Estimate the required energy value E total , this assessment depends on BD hardware capabilities, etc.

[0148] 1) Etotal <E n , the base station notifies BD to communicate in the first communication mode, and then provides an excitation carrier to BD, BD returns information, and the process ends.

[0149] 2) E total >E n The base station estimates the first transmittable data volume D based on the current stored energy En and BD RF energy collection capability. s (First data volume).

[0150] If D total <D s The base station notifies BD to work in the second communication mode, and then the steps are: wireless power is supplied to BD for the first duration, and then an excitation carrier is sent to BD, and BD backscatters back the information to be transmitted, and the process ends.

[0151] If D total >D s , the base station notifies BD to work in the third communication mode, and at the same time sends the wireless first transmission data volume (first data volume), transmission times, unit data volume and second data volume (respectively D s ,N,D m , D mN It should be noted that the calculation method has been described in the above embodiment and will not be repeated here.

[0152] Then the base station switches to provide power supply carrier and excitation carrier according to the third communication mode, that is, BD provides power supply carrier during wireless power supply phase and provides excitation carrier during data transmission phase, until BD completes the transmission of all business data to be transmitted and the process ends.

[0153] Step E4: If the base station does not receive BD feedback information within the second time period (indicating that the BD natural energy collection module is not charged and needs to rely on radio frequency energy to work), it sends the third time period energy carrier and then resends the broadcast signal to request the D total And the RF energy storage value E, then provides an excitation carrier for BD.

[0154] Step E5, BD obtains power through wireless radio frequency energy collection and feeds back to D total and E to the base station.

[0155] Step E6: The base station makes an evaluation and judgment based on D total Estimate the required energy value E total ,This evaluation depends on the BD hardware capabilities and so on.

[0156] 1) E total<E, the base station notifies BD to communicate in the fourth communication mode, and then provides an excitation carrier to BD, BD returns information, and the process ends.

[0157] 2) E total >E, the base station notifies BD to communicate in the fifth communication mode, and sends the total number of transmissions, the unit data volume and the third data volume (T, D m , D mT ) to BD, it should be noted that the calculation method has been described in the above embodiment and will not be repeated here.

[0158] Then the base station switches to provide power supply carrier and excitation carrier according to the fifth communication mode, that is, the BD provides power supply carrier during the wireless power supply phase and provides excitation carrier during the data transmission phase, until the BD completes all information transmission and the process ends.

[0159] In summary, the network device selects the working mode according to the backscatter service attributes (service data to be transmitted) and energy storage conditions, which is highly flexible and applicable to a wide range of situations. In addition, the network device turns on the wireless power supply mode on demand, which can further save the energy and resources of the network device.

[0160] It should be noted that the network device judges and decides the working mode, which further saves the energy consumption of the backscatter terminal. The backscatter terminal with dual energy collection mode in the disclosed embodiment provides a specific process method for how to select different energy sources for energy collection and communication, which can ensure the complete transmission of reverse information and save base station power consumption and resources to a certain extent.

[0161] Aiming at the communication scenario in which the backscatter terminal in backscatter communication is equipped with a natural energy collection module (solar energy, vibration energy, temperature difference energy, etc.) and a radio frequency energy collection module, the present disclosure proposes a backscatter device energy collection mode selection and communication method.

[0162] The disclosed embodiment defines five working modes of the backscatter terminal. According to the business volume transmitted by the backscatter terminal and the current energy storage situation, the network device determines and notifies the backscatter terminal of the working mode to complete the business information transmission. At the same time, the network device turns on the RF power supply function as needed, which can save base station power consumption and resources to a certain extent.

[0163] Based on the same inventive concept, the present disclosure also provides a backscatter communication device, such as the following embodiment. Since the principle of solving the problem in the device embodiment is similar to that in the above method embodiment, the implementation of the device embodiment can refer to the implementation of the above method embodiment, and the repeated parts will not be repeated.

[0164] Fig.11 A schematic diagram of a backscatter communication device in an embodiment of the present disclosure is shown. Fig.11As shown, applied to a network device, the backscatter communication device may include a first receiving module 111 and a determining module 112. The first receiving module 111 may be used to receive the total amount of business data to be transmitted and the environmental energy storage value sent by the backscatter terminal. The determining module 112 may be used to determine the required energy value based on the total amount of business data to be transmitted; the determining module 112 may also be used to determine that the working mode of the backscatter communication is the first communication mode when the required energy value is less than the environmental energy storage value, and to send working mode information to the backscatter terminal so that the backscatter terminal performs backscatter communication according to the first communication mode, wherein the working mode information includes the first communication mode, and the first communication mode is to transmit all the business data to be transmitted at one time through the stored environmental energy.

[0165] In one embodiment, the determination module 112 can also be used to obtain the RF energy collection capability of the backscatter terminal when the required energy value is greater than the environmental energy storage value, and determine the first data amount of the business data to be transmitted for the first transmission based on the environmental energy storage value and the RF energy collection capability; when the total amount of business data to be transmitted is less than the first data amount, determine that the working mode of the backscatter communication is the second communication mode, and wireless power is supplied to the backscatter terminal for a first duration, and send working mode information to the backscatter terminal so that the backscatter terminal performs backscatter communication according to the second communication mode, and the energy of the wireless power supply is RF energy; wherein the working mode information includes the second communication mode, and the second communication mode is to transmit all the business data to be transmitted at one time through RF energy and stored environmental energy.

[0166] In one embodiment, the determination module 112 can also be used to determine that the working mode of the backscatter communication is the third communication mode when the total amount of the business data to be transmitted is greater than the first data amount; determine the number of transmissions and the second data amount according to the total amount of the business data to be transmitted, the first data amount and the unit data amount, the unit data amount is the maximum business data amount that can be transmitted by the backscatter terminal after the first duration of wireless power supply, the second data amount is the business data amount transmitted by the backscatter terminal for the last time, and the number of transmissions is the difference between the total number of transmissions and 1; send working mode information to the backscatter terminal so that the backscatter terminal performs backscatter communication according to the third communication mode, the working mode information includes the first data amount, the number of transmissions, the unit data amount, the second data amount and the third communication mode; wherein the third communication mode is to transmit the first data amount of the business data to be transmitted through the radio frequency energy and the stored ambient energy for the first time, and to transmit the second data amount of the business data to be transmitted through the radio frequency energy for the last time, and transmit the unit data amount of the business data to be transmitted through the radio frequency energy each time in the intermediate Z times, Z is the difference between the number of transmissions and 1, and before the backscatter terminal performs the business data to be transmitted each time in the subsequent Z+1 times, the network device performs the first duration of wireless power supply to the backscatter terminal.

[0167] In one embodiment, before receiving the total amount of business data to be transmitted and the environmental energy storage value sent by the backscatter terminal, the first receiving module 111 can also be used to send a data request message to the backscatter terminal; after receiving the total amount of business data to be transmitted and the environmental energy storage value sent by the backscatter terminal within the second time period, the determination module 112 is used to determine the required energy value based on the total amount of business data to be transmitted.

[0168] In one embodiment, the first receiving module 111 can also be used to perform the following steps if the total amount of to-be-transmitted business data and the environmental energy storage value sent by the backscatter terminal are not received within the second time period: wireless power supply for a third time period to the backscatter terminal; and re-sending a data request message to the backscatter terminal.

[0169] In one embodiment, after resending the data request message to the backscatter terminal, the first receiving module 111 may also be used to receive the total amount of business data to be transmitted and the radio frequency energy storage value sent by the backscatter terminal. The determination module 112 may also be used to determine the required energy value according to the total amount of business data to be transmitted; when the required energy value is less than the radio frequency energy storage value, determine that the working mode of the backscatter communication is the fourth communication mode, and send working mode information to the backscatter terminal so that the backscatter terminal performs backscatter communication according to the fourth communication mode, wherein the working mode information includes the fourth communication mode, and the fourth communication mode is to transmit all the business data to be transmitted at one time through radio frequency energy.

[0170] In one embodiment, the determination module 112 can also be used to determine that the working mode of the backscatter communication is the fifth communication mode when the required energy value is less than the RF energy storage value; determine the total number of transmissions and the third data according to the total amount of business data to be transmitted and the unit data amount, the unit data amount is the maximum amount of business data that can be transmitted by the backscatter terminal after the third duration of wireless power supply, and the third data amount is the amount of business data transmitted by the backscatter terminal for the last time; send working mode information to the backscatter terminal so that the backscatter terminal performs backscatter communication according to the fifth communication mode; wherein the working mode information includes the total number of transmissions, the unit data amount, the third data amount and the fifth communication mode, the fifth communication mode is each of the previous Y times that the unit data amount of business data to be transmitted is transmitted through RF energy, and the last time the third data amount of business data to be transmitted is transmitted through RF energy, Y is the difference between the total number of transmissions and 1, and before the backscatter terminal transmits the business data to be transmitted each time, the network device performs wireless power supply for the backscatter terminal for the third duration.

[0171] The backscatter communication device disclosed in the embodiment of the present disclosure can save energy loss of the backscatter terminal and can also save energy loss of network equipment.

[0172] Based on the same inventive concept, the present disclosure also provides a backscatter communication device in the following embodiments. Since the principle of solving the problem in the device embodiment is similar to that in the above device embodiment, the implementation of the device embodiment can refer to the implementation of the above device embodiment, and the repeated parts will not be repeated.

[0173] Fig.12 A schematic diagram of a backscatter communication device in another embodiment of the present disclosure is shown. Fig.12 As shown, applied to a backscatter terminal, the backscatter communication device may include a second receiving module 121, a sending module 122 and a communication module 123. The second receiving module 121 may be used to receive a data request message sent by a network device; the sending module 122 may be used to send the total amount of service data to be transmitted and an energy storage value to the network device, so that the network device determines the working mode of the backscatter communication according to the total amount of service data to be transmitted and the energy storage value, wherein the energy storage value includes a radio frequency energy storage value and / or an environmental energy storage value; the second receiving module 121 may also be used to receive working mode information sent by the network device; the communication module 123 may be used to perform backscatter communication according to the working mode information.

[0174] In one embodiment, the working mode information includes a first communication mode, and the first communication mode is to transmit all the business data to be transmitted at one time through the stored environmental energy.

[0175] In one embodiment, the working mode information includes a second communication mode, and the second communication mode is to transmit all the business data to be transmitted at one time through radio frequency energy and stored environmental energy.

[0176] In one embodiment, the working mode information includes a first data volume, a transmission number, a unit data volume, a second data volume and a third communication mode, the first data volume is the data volume of the backscatter terminal for the first transmission of the business data to be transmitted, the first data volume is determined by the network device according to the environmental energy storage value and the radio frequency energy collection capability, the transmission number is the difference between the total number of transmissions and 1, the unit data volume is the maximum business data volume that the backscatter terminal can transmit after the first duration of wireless power supply, and the second data volume is the business data volume transmitted by the backscatter terminal for the last time; wherein, the third communication mode is the first transmission of the business data to be transmitted of the first data volume through radio frequency energy and stored environmental energy, the last transmission of the business data to be transmitted of the second data volume through radio frequency energy, each of the intermediate Z times transmits the business data to be transmitted of the unit data volume through radio frequency energy, Z is the difference between the transmission number and 1, and before the backscatter terminal transmits the business data to be transmitted each time in the subsequent Z+1 times, the network device performs wireless power supply for the backscatter terminal for the first duration.

[0177] In one embodiment, the working mode information includes a fourth communication mode, and the fourth communication mode is to transmit all the to-be-transmitted business data at one time through radio frequency energy.

[0178] In one embodiment, the working mode information includes the total number of transmissions, the unit data volume, the third data volume and the fifth communication mode, the unit data volume is the maximum business data volume that can be transmitted by the backscatter terminal after the third duration of wireless power supply, and the third data volume is the business data volume transmitted by the backscatter terminal for the last time; wherein, the fifth communication mode is each of the previous Y times that a unit data volume of business data to be transmitted is transmitted through radio frequency energy, and the last time the third data volume of business data to be transmitted is transmitted through radio frequency energy, Y is the difference between the total number of transmissions and 1, and before the backscatter terminal transmits the business data to be transmitted each time, the network device performs wireless power supply for the third duration on the backscatter terminal.

[0179] The backscatter communication device disclosed in the embodiment of the present disclosure can save energy loss of the backscatter terminal and can also save energy loss of network equipment.

[0180] Those skilled in the art will appreciate that various aspects of the present disclosure may be implemented as systems, methods or program products. Therefore, various aspects of the present disclosure may be specifically implemented in the following forms, namely: complete hardware implementation, complete software implementation (including firmware, microcode, etc.), or a combination of hardware and software, which may be collectively referred to herein as "circuits", "modules" or "systems".

[0181] Refer to the following Fig.13 1300 according to this embodiment of the present disclosure is described. Fig.13 The electronic device 1300 shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.

[0182] like Fig.13 As shown, the electronic device 1300 is in the form of a general computing device. The components of the electronic device 1300 may include but are not limited to: at least one processing unit 1310, at least one storage unit 1320, and a bus 1330 connecting different system components (including the storage unit 1320 and the processing unit 1310).

[0183] The storage unit stores program codes, which can be executed by the processing unit 1310, so that the processing unit 1310 executes the steps described in the above “Exemplary Method” section of this specification according to various exemplary embodiments of the present disclosure.

[0184] The storage unit 1320 may include a readable medium in the form of a volatile storage unit, such as a random access storage unit (RAM) 13201 and / or a cache storage unit 13202 , and may further include a read-only storage unit (ROM) 13203 .

[0185] The storage unit 1320 may also include a program / utility 13204 having a set (at least one) of program modules 13205, such program modules 13205 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0186] Bus 1330 may represent one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

[0187] The electronic device 1300 may also communicate with one or more external devices 1340 (e.g., keyboards, pointing devices, Bluetooth devices, etc.), may also communicate with one or more devices that enable a user to interact with the electronic device 1300, and / or communicate with any device that enables the electronic device 1300 to communicate with one or more other computing devices (e.g., routers, modems, etc.). Such communication may be performed via an input / output (I / O) interface 1350. Furthermore, the electronic device 1300 may also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and / or public networks, such as the Internet) via a network adapter 1360. As shown, the network adapter 1360 communicates with other modules of the electronic device 1300 via a bus 1330. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the electronic device 1300, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0188] Through the description of the above implementation, it is easy for those skilled in the art to understand that the example implementation described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (which can be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the implementation of the present disclosure.

[0189] In the disclosed exemplary embodiments, a computer-readable storage medium is also provided, which may be a readable signal medium or a readable storage medium. Fig.14 A schematic diagram of a computer-readable storage medium in an embodiment of the present disclosure is shown. Fig.14 As shown, the computer-readable storage medium 1400 stores a program product capable of implementing the above method of the present disclosure.

[0190] In some possible implementations, various aspects of the present disclosure may also be implemented in the form of a program product, which includes program code. When the program product is run on a terminal device, the program code is used to enable the terminal device to execute the steps of various exemplary implementations of the present disclosure described in the above "Specific Implementation Methods" section of this specification.

[0191] More specific examples of computer-readable storage media in the present disclosure may include, but are not limited to, an electrical connection having one or more conductors, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0192] In the present disclosure, a computer readable storage medium may include a data signal propagated in baseband or as part of a carrier wave, wherein a readable program code is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A readable signal medium may also be any readable medium other than a readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0193] Alternatively, the program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination of the foregoing.

[0194] In a specific implementation, the program code for performing the operations of the present disclosure may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, etc., and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., using an Internet service provider to connect through the Internet).

[0195] The embodiment of the present disclosure provides a computer program product or a computer program, which includes a computer instruction, and the computer instruction is stored in a computer-readable storage medium. The processor of the computer device reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the computer device executes the backscatter communication method provided in various optional ways in any embodiment of the present disclosure.

[0196] In addition, although the steps of the method in the present disclosure are described in a specific order in the drawings, this does not require or imply that the steps must be performed in this specific order, or that all the steps shown must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps, etc.

[0197] Through the description of the above implementation, it is easy for those skilled in the art to understand that the example implementation described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (which can be a personal computer, a server, a mobile terminal, or a network device, etc.) to execute the method according to the implementation of the present disclosure.

[0198] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The description and examples are to be regarded as exemplary only, and the true scope of the present disclosure is indicated by the appended claims.

Claims

1. A backscatter communication method, characterized in that: Applied to a network device, the method comprises: receiving the total amount of business data to be transmitted and the environmental energy storage value sent by the backscatter terminal; Determining the required energy value according to the total amount of the service data to be transmitted; In a case where the required energy value is less than the ambient energy storage value, the working mode of the backscatter communication is determined to be a first communication mode, and working mode information is sent to the backscatter terminal so that the backscatter terminal performs backscatter communication according to the first communication mode, wherein the working mode information includes the first communication mode, and the first communication mode is to transmit all the business data to be transmitted at one time through the stored ambient energy.

2. The method according to claim 1, characterized in that The method further comprises: When the required energy value is greater than the environmental energy storage value, obtaining the radio frequency energy collection capability of the backscatter terminal, and determining a first data amount of the service data to be transmitted for the first transmission according to the environmental energy storage value and the radio frequency energy collection capability; In a case where the total amount of the service data to be transmitted is less than the first amount of data, determining that the working mode of the backscatter communication is the second communication mode, performing wireless power supply for a first duration to the backscatter terminal, and sending working mode information to the backscatter terminal so that the backscatter terminal performs backscatter communication according to the second communication mode, and the energy of the wireless power supply is radio frequency energy; The working mode information includes the second communication mode, and the second communication mode is to transmit all the business data to be transmitted at one time through the radio frequency energy and the stored environmental energy.

3. The method according to claim 2, characterized in that The method further comprises: When the total amount of the service data to be transmitted is greater than the first amount of data, determining the working mode of the backscatter communication to be the third communication mode; Determine the number of transmissions and the second data amount according to the total amount of service data to be transmitted, the first data amount and the unit data amount, wherein the unit data amount is the maximum service data amount that can be transmitted by the backscatter terminal after the wireless power supply of the first duration, the second data amount is the service data amount transmitted by the backscatter terminal for the last time, and the number of transmissions is the difference between the total number of transmissions and 1; Sending working mode information to the backscatter terminal so that the backscatter terminal performs backscatter communication according to the third communication mode, the working mode information including the first data amount, the number of transmissions, the unit data amount, the second data amount and the third communication mode; Among them, the third communication mode is to transmit the first data amount of the to-be-transmitted business data through the radio frequency energy and the stored ambient energy for the first time, and to transmit the second data amount of the to-be-transmitted business data through the radio frequency energy for the last time, and to transmit the unit data amount of the to-be-transmitted business data through radio frequency energy each time in the middle Z times, Z is the difference between the number of transmissions and 1, and before the backscatter terminal transmits the to-be-transmitted business data each time in the next Z+1 times, the network device performs wireless power supply for the first duration to the backscatter terminal.

4. The method according to claim 1, characterized in that Before receiving the total amount of service data to be transmitted and the environmental energy storage value sent by the backscatter terminal, the method further includes: Sending a data request message to the backscatter terminal; Wherein, determining the required energy value according to the total amount of service data to be transmitted includes: After receiving the total amount of service data to be transmitted and the environmental energy storage value sent by the backscatter terminal within the second time period, the step of determining the required energy value according to the total amount of service data to be transmitted is performed.

5. The method according to claim 4, characterized in that The method further comprises: If the total amount of service data to be transmitted and the environmental energy storage value sent by the backscatter terminal are not received within the second time period, the following steps are performed: Wirelessly supplying energy to the backscatter terminal for a third duration; The data request message is resent to the backscatter terminal.

6. The method according to claim 5, characterized in that After resending the data request message to the backscatter terminal, the method further includes: receiving the total amount of service data to be transmitted and the radio frequency energy storage value sent by the backscatter terminal; Determining the required energy value according to the total amount of the service data to be transmitted; In a case where the required energy value is less than the RF energy storage value, the working mode of the backscatter communication is determined to be a fourth communication mode, and working mode information is sent to the backscatter terminal so that the backscatter terminal performs backscatter communication according to the fourth communication mode, wherein the working mode information includes the fourth communication mode, and the fourth communication mode is to transmit all the business data to be transmitted at one time through RF energy.

7. The method according to claim 6, characterized in that The method further comprises: In a case where the required energy value is less than the radio frequency energy storage value, determining that the working mode of backscatter communication is a fifth communication mode; Determine the total number of transmissions and the third data according to the total amount of service data to be transmitted and the unit data amount, wherein the unit data amount is the maximum service data amount that can be transmitted by the backscatter terminal after the wireless power supply for the third duration, and the third data amount is the service data amount transmitted by the backscatter terminal for the last time; Sending working mode information to the backscatter terminal so that the backscatter terminal performs backscatter communication according to the fifth communication mode; Among them, the working mode information includes the total number of transmissions, the unit data volume, the third data volume and the fifth communication mode. The fifth communication mode is that the unit data volume of the business data to be transmitted is transmitted by radio frequency energy each time in the previous Y times, and the third data volume of the business data to be transmitted is transmitted by radio frequency energy for the last time. Y is the difference between the total number of transmissions and 1. Before the backscatter terminal transmits the business data to be transmitted each time, the network device performs wireless power supply to the backscatter terminal for the third period of time.

8. A backscatter communication method, characterized in that: Applied to a backscatter terminal, the method comprises: Receiving a data request message sent by a network device; Sending the total amount of service data to be transmitted and the energy storage value to the network device, so that the network device determines the working mode of backscatter communication according to the total amount of service data to be transmitted and the energy storage value, wherein the energy storage value includes a radio frequency energy storage value and / or an environmental energy storage value; Receiving the working mode information sent by the network device; Backscatter communication is performed according to the working mode information.

9. The method according to claim 8, characterized in that The working mode information includes a first communication mode, where the first communication mode is to transmit all the business data to be transmitted at one time through the stored environmental energy.

10. The method according to claim 8, characterized in that The working mode information includes a second communication mode, where the second communication mode is to transmit all the business data to be transmitted at one time through radio frequency energy and stored environmental energy.

11. The method according to claim 8, characterized in that The working mode information includes a first data volume, a number of transmissions, a unit data volume, a second data volume and a third communication mode, wherein the first data volume is the data volume of the service data to be transmitted when the backscatter terminal transmits the service data for the first time, the first data volume is determined by the network device according to the environmental energy storage value and the radio frequency energy collection capability, the number of transmissions is the difference between the total number of transmissions and 1, the unit data volume is the maximum service data volume that the backscatter terminal can transmit after wireless power supply for a first duration, and the second data volume is the service data volume transmitted by the backscatter terminal for the last time; Among them, the third communication mode is to transmit the first data amount of to-be-transmitted business data through radio frequency energy and stored ambient energy for the first time, and to transmit the second data amount of to-be-transmitted business data through the radio frequency energy for the last time, and to transmit the unit data amount of to-be-transmitted business data through radio frequency energy each time in the middle Z times, Z is the difference between the number of transmissions and 1, and before the backscatter terminal transmits the to-be-transmitted business data each time in the next Z+1 times, the network device performs wireless power supply for the first duration to the backscatter terminal.

12. The method according to claim 8, characterized in that The working mode information includes a fourth communication mode, and the fourth communication mode is to transmit all the business data to be transmitted at one time through radio frequency energy.

13. The method according to claim 8, characterized in that The working mode information includes the total number of transmissions, the unit data volume, the third data volume, and the fifth communication mode, wherein the unit data volume is the maximum service data volume that can be transmitted by the backscatter terminal after the third duration of wireless power supply, and the third data volume is the service data volume transmitted by the backscatter terminal for the last time; Among them, the fifth communication mode is that the unit data amount of the business data to be transmitted is transmitted by radio frequency energy each of the first Y times, and the third data amount of the business data to be transmitted is transmitted by radio frequency energy for the last time, Y is the difference between the total number of transmissions and 1, and before the backscatter terminal transmits the business data to be transmitted each time, the network device performs wireless power supply to the backscatter terminal for the third period of time.

14. A backscatter communication device, characterized in that: Applied to network equipment, including: A first receiving module is used to receive the total amount of service data to be transmitted and the environmental energy storage value sent by the backscatter terminal; A determination module, used to determine the required energy value according to the total amount of business data to be transmitted; The determination module is further used to determine that the working mode of the backscatter communication is the first communication mode when the required energy value is less than the environmental energy storage value, and send working mode information to the backscatter terminal so that the backscatter terminal performs backscatter communication according to the first communication mode, wherein the working mode information includes the first communication mode, and the first communication mode is to transmit all the business data to be transmitted at one time through the stored environmental energy.

15. A backscatter communication device, characterized in that: Applied to backscatter terminals, including: A second receiving module, used for receiving a data request message sent by a network device; A sending module, used for sending the total amount of business data to be transmitted and the energy storage value to the network device, so that the network device determines the working mode of backscatter communication according to the total amount of business data to be transmitted and the energy storage value, wherein the energy storage value includes a radio frequency energy storage value and / or an environmental energy storage value; The second receiving module is further used to receive the working mode information sent by the network device; A communication module is used to perform backscatter communication according to the working mode information.

16. An electronic device, characterized in that: include: processor; as well as A memory, configured to store executable instructions of the processor; The processor is configured to execute the backscatter communication method according to any one of claims 1 to 13 by executing the executable instructions.

17. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the backscatter communication method described in any one of claims 1 to 13 is implemented.

18. A computer program product comprising: A computer program or instruction, characterized in that when the computer program or instruction is executed by a processor, it implements the backscatter communication method described in any one of claims 1-13.

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