Wireless communication method, system, passive chip and storage medium

Abstract

The embodiment of the application provides a wireless communication method, a system passive chip and a storage medium, relates to the technical field of wireless communication, and the method can be applied to a wireless communication system, wherein the wireless communication system comprises an excitation source, a passive chip and a receiving device. The specific scheme comprises the following steps: the excitation source generates a single-frequency carrier signal based on a de-whitening technology, and transmits the single-frequency carrier signal to the passive chip. The passive chip is excited by the single-frequency carrier signal, and generates a broadcast data packet based on the single-frequency carrier signal. The passive chip broadcasts the broadcast data packet, wherein the broadcast data packet meets a broadcast data packet standard in a Bluetooth low-power consumption communication protocol. The receiving device receives the broadcast data packet. The signal transmission system with low power consumption and high efficiency is constructed, the dependence of the passive chip on a radio frequency source is avoided, and the wireless communication system is simplified.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technology, and in particular to a wireless communication method, a passive chip for a system, and a storage medium. Background Technology

[0002] With the rapid development of the Internet of Things (IoT) technology, IoT has been implemented in existing applications such as smart homes, smart wearable devices, and industrial automation. In the development and application of IoT, low-power, high-efficiency wireless communication technologies have become a new research focus. Meanwhile, Bluetooth Low Energy (BLE) communication technology, due to its advantages such as low power consumption, high efficiency, and excellent wireless communication capabilities, has become the preferred choice for IoT applications. Therefore, BLE has been widely used in smart devices, wearable devices, and environmental monitoring.

[0003] Traditional BLE communication systems typically rely on independent power supplies to power electronic devices for communication. However, passive devices do not have independent power supplies; they transmit data via backscattering by collecting radio frequency energy signals. Therefore, backscatter communication technology has gained widespread attention in the Internet of Things (IoT) as a low-power communication method, offering advantages such as reduced device power consumption and extended battery life. Introducing BLE into backscatter communication systems can help further improve IoT communication. However, existing BLE backscatter systems still need improvement in signal stability, communication distance, and power consumption. Summary of the Invention

[0004] This invention provides a wireless communication method, a passive chip for the system, and a storage medium, which can realize the construction of a low-power, high-efficiency signal transmission system while avoiding the dependence of passive chips on radio frequency sources and simplifying the wireless communication system.

[0005] To achieve the above technical objectives, the embodiments of the present invention adopt the following technical solutions:

[0006] In a first aspect, embodiments of the present invention provide a wireless communication method, which can be applied to a wireless communication system, the wireless communication system including an excitation source, a passive chip, and a receiving device.

[0007] In its implementation, the method includes: an excitation source generating a single-frequency carrier signal based on anti-whitening technology and sending the single-frequency carrier signal to a passive chip. The passive chip is excited by the single-frequency carrier signal and generates a broadcast data packet based on the single-frequency carrier signal. The passive chip broadcasts the broadcast data packet, wherein the broadcast data packet conforms to the broadcast data packet standard in the Bluetooth Low Energy communication protocol. A receiving device receives the broadcast data packet.

[0008] Understandably, passive chips are excited by excitation signals, thus eliminating the need for a dedicated radio frequency source and effectively simplifying the structure of wireless communication systems. Furthermore, passive chips broadcast data packets conforming to the Bluetooth Low Energy communication protocol, making it a low-power, high-efficiency wireless communication method.

[0009] In conjunction with the first aspect, in one possible implementation, the method may further include: a passive chip monitoring a single-frequency carrier signal using an average detection method; the passive chip receiving the single-frequency carrier signal and performing backscattering processing on the single-frequency carrier signal to generate a broadcast data packet.

[0010] In this way, wireless communication systems can provide longer communication distances and higher transmission efficiency.

[0011] In conjunction with the first aspect, another possible implementation method in which the excitation source generates a single-frequency carrier signal based on anti-whitening technology includes: the excitation source constructing a character signal with a preset data structure in the broadcast data field of the broadcast data packet based on anti-whitening technology to generate a single-frequency carrier signal.

[0012] Understandably, the excitation source, based on the excitation information generated by anti-whitening technology, can drive the passive chip in a passive chip system. This provides power to the passive chip, enabling the effective operation of the wireless communication system.

[0013] In conjunction with the first aspect, another possible implementation of the method further includes: a passive chip being excited by the single-frequency carrier signal and processing a portion of the data field of the single-frequency carrier signal in the data packet.

[0014] The passive chip transmits its own data, enabling the receiving device that receives the broadcast data packet to obtain the valid information in the broadcast data packet.

[0015] In conjunction with the first aspect, another possible implementation of the method may further include: a passive chip broadcasting the broadcast data packet to a receiving device on a target broadcast channel.

[0016] In conjunction with the first aspect, another possible implementation involves the excitation source receiving a single-frequency carrier signal generation instruction to generate a single-frequency carrier signal based on anti-whitening technology.

[0017] In conjunction with the first aspect, in another possible implementation, the passive chip broadcasts the broadcast data packet on a first broadcast channel; wherein the broadcast data packet includes the transmission time interval of the auxiliary data packet and second broadcast channel information; the passive chip sends the auxiliary data packet to the receiving device on the second broadcast channel.

[0018] Secondly, embodiments of the present invention also provide a wireless communication system, including an excitation source, a passive chip, and a receiving device.

[0019] The excitation source is used to generate a single-frequency carrier signal based on anti-whitening technology and send the single-frequency carrier signal to the passive chip system.

[0020] The passive chip is used to receive a single-frequency carrier signal from the excitation source, be excited by the single-frequency carrier signal, generate a broadcast data packet based on the single-frequency carrier signal, and broadcast the broadcast data packet, wherein the broadcast data packet conforms to the broadcast data packet standard in the Bluetooth Low Energy communication protocol.

[0021] The receiving device is used to receive the broadcast data packets.

[0022] In conjunction with the second aspect, in one possible implementation, the passive chip is further configured to: monitor the single-frequency carrier signal using an average detection method; receive the single-frequency carrier signal; and perform backscattering processing on the single-frequency carrier signal to generate broadcast data packets.

[0023] In conjunction with the second aspect, in another possible implementation, the excitation source is also used to construct a character signal with a preset data structure in the broadcast data field of the broadcast data packet based on the anti-whitening technology, so as to generate a single-frequency carrier signal.

[0024] In conjunction with the second aspect, in another possible implementation, the passive chip is further configured to be excited by the single-frequency carrier signal and process a portion of the data field of the single-frequency carrier signal in the data packet. The passive chip transmits its own carried data, enabling the receiving device that receives the broadcast data packet to obtain valid information from the broadcast data packet.

[0025] In conjunction with the second aspect, another possible implementation involves the passive chip system broadcasting the broadcast data packet to the receiving device on the target broadcast channel.

[0026] In conjunction with the second aspect, in another possible implementation, the excitation source is also used to receive a single-frequency carrier signal generation instruction to generate a single-frequency carrier signal based on anti-whitening technology.

[0027] In conjunction with the second aspect, in another possible implementation, the passive chip is further configured to: broadcast the broadcast data packet on a first broadcast channel; wherein the broadcast data packet includes a transmission time interval of an auxiliary data packet and second broadcast channel information; and the passive chip sends the auxiliary data packet to the receiving device on the second broadcast channel.

[0028] Thirdly, embodiments of the present invention also provide a chip system, including: at least one processor and at least one interface circuit, wherein the at least one processor and at least one interface circuit are interconnected via lines.

[0029] The processor is configured to execute instructions, which, when executed, can implement the first aspect and any possible implementation thereof, and the passive chip implementation steps in the second aspect and any possible implementation thereof.

[0030] Fourthly, the present invention also provides an electronic device, comprising: a processor and a memory for storing processor-executable instructions; wherein the processor is configured to execute instructions to implement the method of the first aspect and any possible implementation thereof.

[0031] Fifthly, the present invention also provides a server that may include a processor and a memory for storing processor-executable instructions; wherein the processor is configured to execute the instructions to implement the method of the first aspect and any of its possible embodiments.

[0032] In a sixth aspect, the present invention also provides a computer-readable storage medium storing computer instructions that, when executed on an electronic device, implement the methods mentioned in the first or second aspect and any possible implementation thereof.

[0033] It is understood that the beneficial effects achieved by the system of the second aspect and any possible implementation thereof, the chip system of the third aspect, the electronic device of the fourth aspect, the server of the fifth aspect, and the computer-readable storage medium of the sixth aspect provided above can be referred to as the beneficial effects in the first aspect and any possible design thereof, which will not be repeated here. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of a passive chip provided in an embodiment of the present invention;

[0035] Figure 2 This is a flowchart of a wireless communication method provided in an embodiment of the present invention;

[0036] Figure 3 This is a circuit structure diagram for generating a dewhitening sequence provided in an embodiment of the present invention;

[0037] Figure 4 This is a schematic diagram of a Bluetooth broadcast data packet structure provided in an embodiment of the present invention;

[0038] Figure 5 This is another schematic diagram of Bluetooth broadcast data packet structure division provided in an embodiment of the present invention;

[0039] Figure 6 This is a block diagram of a passive chip reflection modulation implementation provided by an embodiment of the present invention;

[0040] Figure 7This is a spectral shift power diagram of a BLE4.0 backscattering system provided in an embodiment of the present invention;

[0041] Figure 8 This is a spectral shift power diagram of a BLE5.3 backscattering system provided in an embodiment of the present invention;

[0042] Figure 9 This is a diagram of a BLE backscatter communication architecture provided in an embodiment of the present invention;

[0043] Figure 10 This is a schematic diagram of a chip system structure provided in an embodiment of the present invention. Detailed Implementation

[0044] To facilitate understanding of this invention, the technical terms involved in the embodiments of this invention will be explained below.

[0045] Passive components: These are components that cannot convert energy (such as electrical energy) into electrical signals and output them. Examples include resistors, capacitors, and inductors. These components can operate without an external power input.

[0046] Backscatter communication: When a radio frequency (RF) signal reaches the surface of an object, a portion is reflected. The strength of the reflected signal depends on the object's shape, material, and the distance of the RF signal transmitter from the object. Furthermore, the object can modulate the sensed data it acquires onto the reflected signal. In other words, backscatter communication is a wireless transmission technology that does not require a dedicated transmitter and can achieve signal transmission and encoding.

[0047] Anti-whitening technology: During Bluetooth data transmission (or broadcasting) between electronic devices, the sending party scrambles the data packets; this process is called data whitening. Specifically, it involves adding a random sequence to the data packet to be transmitted. In data transmission, when the communication channel is determined, the whitening random sequence is also determined. Therefore, the data to be transmitted can be determined through the random sequence. If the whitened data packet is all "0"s or all "1"s, this is anti-whitening technology.

[0048] Tag: In this embodiment of the invention, the tag can also be referred to as a "chip" and can be used to generate, transmit and receive signals.

[0049] As is well known, BLE backscatter communication technology has made significant progress in academia and industry in recent years. However, BLE backscatter systems still face a series of technical challenges.

[0050] On the one hand, in practical applications, the length of commercial carriers is a limitation. Specifically, BLE 4.0 (a version of the Bluetooth Low Energy communication protocol) sets the maximum effective data capacity in broadcast packets at 31 bytes. Under this limitation, the length of a single-frequency carrier signal generated using anti-whitening technology also does not exceed 31 bytes. In this case, the BLE data rate is 1 Mbps, and the maximum duration of a single-frequency carrier is 248 μs. Therefore, the maximum effective data capacity of the tag information used for modulation in backscatter communication systems is also very limited, typically less than 15 bytes. This limits the system's bandwidth and data transmission capabilities, directly affecting the system's propagation capability and communication efficiency.

[0051] On the other hand, significant frequency shifts can disrupt system stability. Specifically, in BLE 4.0 backscatter systems, frequency shifts are typically substantial. The BLE protocol specifies that the frequency offset between the symbols "0" and "1" at the center frequency must be at least 250 kHz, with 500 kHz being optimal. Furthermore, frequency shifts can reach 24 MHz or even higher when transmitting between different broadcast channels. Such a range of frequency shifts not only increases system complexity but can also lead to an increased error rate in the received signal, affecting communication stability and reliability. Especially in environments with weak signals or significant interference, increased frequency shifts can render the system unstable.

[0052] On the other hand, current BLE-based backscattering systems are complex to design. Specifically, current BLE backscattering systems require frequency adjustment and synchronization between the broadcast and data channels for effective backscattering. This necessitates the establishment of connections between BLE devices and the exchange of data while connected. Consequently, backscattered signals cannot be received without a connection, making the implementation and deployment of backscattering systems even more complex.

[0053] On the other hand, BLE backscatter systems are heavily reliant on dedicated radio frequencies. Specifically, because commercial radio frequency sources available in county-level cities cannot be used directly, BLE backscatter systems require custom-designed radio frequency sources. Furthermore, these systems often require more hardware support, resulting in high deployment costs and making them difficult to scale up for large-scale applications.

[0054] To address the aforementioned problems, this invention provides a wireless communication method applied to a wireless communication system (or, as some might call it, a BLE backscattering system, hereinafter referred to as a BLE backscattering system). The BLE backscattering system employs a passive chip and an excitation source. The excitation source can be a readily available commercially available excitation source. This solves the problem of designing and using radio frequency (RF) sources. Therefore, it is possible to construct a low-power, high-efficiency signal transmission system while avoiding the passive chip's dependence on RF sources and simplifying the BLE backscattering system.

[0055] The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0056] It should be noted that the wireless communication method provided in this embodiment of the invention is applied to a BLE backscattering system. In this backscattering system, an electronic device with a passive chip and an excitation source are provided. The excitation source can provide an excitation signal to the passive chip, enabling the passive chip in the electronic device to transmit data under the action of the excitation signal.

[0057] In some specific implementations, the incentive source can be an existing commercial incentive source.

[0058] Please refer to Figure 1 This is a schematic diagram of a passive chip provided in an embodiment of the present invention. Figure 1 As shown, the passive chip 200 includes a processor 210, a wireless communication module 220, an antenna 1, and a radio frequency module 230.

[0059] It is understood that the structure illustrated in the embodiments of the present invention does not constitute a specific limitation on the passive chip 200. In other embodiments of the present invention, the passive chip 200 may include more or fewer components than illustrated, or combine some components, or split some components, or have different component arrangements. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0060] Processor 210 may include one or more processing units. For example, processor 210 may include a modem processor, a controller, a memory, and / or a digital signal processor (DSP), a baseband processor, etc. The different processing units may be independent devices or integrated into one or more processors.

[0061] Processor 210 may also include memory for storing instructions and data. In some embodiments, processor 210 may include one or more interfaces.

[0062] In some embodiments, the processor 210 can modulate and demodulate the received signal and generate a Bluetooth broadcast data packet, modulate the broadcast data packet into an electromagnetic wave signal, and then convert it into an electromagnetic wave and radiate it out via the antenna 1.

[0063] It is understood that the interface connection relationships between the modules illustrated in the embodiments of the present invention are merely illustrative and do not constitute a structural limitation on the passive chip 200. In other embodiments of the present invention, the passive chip 200 may also employ different interface connection methods or combinations of multiple interface connection methods as described in the above embodiments.

[0064] The wireless communication module 220 can provide solutions for near-field communication (NFC) technologies, including Bluetooth (BT), applied to the passive chip 200. The wireless communication module may include a Bluetooth module 221. The wireless communication module 220 may be one or more devices integrating at least one communication processing module. The wireless communication module 220 receives electromagnetic waves via antenna 1. The radio frequency module 230 can perform frequency modulation and filtering on the electromagnetic wave signal, and send the processed signal to the processor 210. The wireless communication module 220 can also receive signals to be transmitted from the processor 210, frequency modulate and amplify them, and then convert them into electromagnetic waves for radiation via antenna 1.

[0065] As will be understood by those skilled in the art, the structural diagrams of the electronic devices shown in the embodiments of the present invention do not constitute a limitation on the structure of the electronic devices. In practical applications, electronic devices may include more or fewer components as shown, or may combine certain components, or may rearrange the components.

[0066] For example, the electronic device in the embodiments of the present invention may be a mobile phone, tablet computer, desktop computer, laptop computer, handheld computer, notebook computer, in-vehicle device, ultra-mobile personal computer (UMPC), netbook, as well as cellular phone, personal digital assistant (PDA), augmented reality (AR) / virtual reality (VR) device, etc. The embodiments of the present invention do not impose special limitations on the specific form of the electronic device.

[0067] The wireless communication method provided in the embodiments of the present invention will be described below in the context of Bluetooth data transmission.

[0068] It is worth mentioning that, in order to overcome the problems of signal stability, communication distance, and power consumption in BLE backscatter systems, the BLE protocol has been updated. The method provided in this embodiment of the invention is based on the BLE 5.3 protocol (another version of the Bluetooth Low Energy communication protocol).

[0069] Please refer to Figure 2 This is a flowchart of a wireless communication method provided in an embodiment of the present invention. Figure 2 As shown, the wireless communication method includes steps 21-25.

[0070] The method described in this embodiment is illustrated using a BLE backscatter communication system as an example. The BLE backscatter communication system includes an excitation source, a passive chip 1, and an electronic device 2. In some embodiments, the excitation source can be a commercially available excitation source, the passive chip 1 is an electronic device including a BLE 5.3 passive chip, and the electronic device 2 can be a mobile phone, tablet, or other electronic device capable of Bluetooth communication.

[0071] Step 21: The excitation source generates a single-frequency carrier signal based on anti-whitening technology.

[0072] It should be noted that when Bluetooth data is transmitted over the air, the transmitted data packets are scrambled, which is called data whitening. This can enhance the data's anti-interference ability. The random sequence used for whitening is generated using the following formula 1:

[0073] whitener = x 7 +x 4 +x 0 (Formula 1)

[0074] For specific details, please refer to Figure 3 This is a circuit structure diagram for generating a dewhitening sequence provided in an embodiment of the present invention. Figure 3 As shown, numbers 1 through 7 represent the shift register. The initial value of the shift register is determined by the communication channel; bit 0 is set to 1, and bits 1 through 6 are set to the binary sequence of the channel number. When the communication channel is determined, the whitening random sequence is also determined. Therefore, the broadcast data can be determined through the random sequence, generating broadcast packets that are either all 0s or all 1s after whitening.

[0075] For example, consider a BLE 4.0 broadcast data packet. Please refer to [link / reference]. Figure 4 This is a schematic diagram illustrating the structure of a Bluetooth broadcast data packet according to an embodiment of the present invention. The data packet preamble and access address are predetermined. When the data is determined, the header connector and the Cyclic Redundancy Check (CRC) check are also determined. After whitening, the broadcast data can generate a maximum of 37 bytes of data consisting entirely of 0s or 1s. Figure 4 The data portion of the chip is limited, therefore the maximum length of a single-frequency carrier generated by a commercial BLE 4.0 chip is 248μs. BLE 4.0 broadcast data packets can only be transmitted on channels 37, 38, and 39. Backscatter systems using traditional BLE 4.0-generated single-frequency carrier signals have a short transmission length and experience significant frequency shift during frequency shift modulation, thus limiting communication efficiency.

[0076] For another example, consider a BLE 5.3 broadcast data packet. Please refer to [link / reference]. Figure 5This is a schematic diagram illustrating the structure of a Bluetooth broadcast data packet according to an embodiment of the present invention. Specifically, it shows the BLE 5.3 broadcast data packet structure. The maximum Adv Data portion is 254 bytes. By using anti-whitening technology, the single-frequency carrier signal generated by the BLE 5.3 radio can be extended to 254 bytes, thereby significantly increasing the data transmission capacity of the backscatter tag and reducing the probability of communication interruption. In particular, the maximum effective data capacity length of the BLE 5.3 broadcast data packet is 254 bytes, allowing the single-frequency carrier signal duration to reach 2032 μs, significantly higher than the 248 μs limitation of traditional BLE 4.0.

[0077] Step 22: Send a single-frequency carrier signal to passive chip 1.

[0078] Step 23: Passive chip 1 is excited by a single-frequency carrier signal and generates broadcast data packets based on the single-frequency carrier signal.

[0079] Among them, the BLE 5.3 passive chip refers to a commercially available chip that supports the BLE 5.3 protocol. The purpose of using this chip is to extend single-frequency carrier signals.

[0080] Specifically, the passive chip in passive chip 1 can be a passive BLE chip that supports the BLE protocol. It can be powered by collecting radio signals from the environment and package its own data into broadcast packets in the structure of BLE broadcast packets. The BLE communication protocol specifies GFSK as the modulation method; in reflective communication systems, BFSK modulation is used, and the modulated signal can be received by smart devices.

[0081] In some implementations, the subcarrier clock is initially FSK modulated with the BLE baseband signal, and the modulation tube is controlled by the offset subcarrier signal to continuously reflect and modulate the data inside the tag.

[0082] Please refer to Figure 6 This is a block diagram illustrating a passive chip reflection modulation implementation according to an embodiment of the present invention. The spectrum of the reflected signal can be represented by the following formula 2:

[0083] F CW ±(f SC ±δf BLE )(Formula 2)

[0084] Where F CW For external carrier, f SC For the offset subcarrier, δf BLE This is the reflection offset. The protocol requires a reflection offset δf. BLE ≥185KHz, the embodiment of the present invention uses reflection offset δf BLE =500KHz.

[0085] Understandably, BLE 4.0 broadcast packets can only be transmitted on broadcast channels 37, 38, and 39, with corresponding center frequencies of 2402MHz, 2426MHz, and 2480MHz. Please refer to [link / reference]. Figure 7 The image shows the power diagram of the BLE 4.0 backscattering system provided in an embodiment of the present invention during spectral shifting. Figure 7 As shown, when a BLE 4.0 backscatter system performs spectrum shifting, the shifted frequency value is usually 24MHz or higher, which not only increases the power consumption of the system, but may also cause signal distortion.

[0086] In addition, BLE 5.3 introduces eight new extended broadcast packet types. The ADV_EXT_IND packet operates only on the main broadcast channel (37, 38, 39), while the other seven can be broadcast on the secondary broadcast channel. These broadcast packets transmitted and received on the secondary broadcast channel are called auxiliary packets. The receiving device receives the ADV_EXT_IND packet transmitted on the main broadcast channel, reads the time interval for auxiliary packet transmission and the secondary broadcast channel number carried on it, plans to receive the required auxiliary packets on the designated secondary broadcast channel, and reads the broadcast data information of the auxiliary packets.

[0087] Please refer to Figure 8 This is a power shift diagram of the BLE 5.3 backscattering system provided in an embodiment of the present invention. Figure 8 As shown, in a BLE 5.3 backscatter system, BLE 5.3 extended broadcast data packets can be transmitted on the data channel. By transmitting the backscattered broadcast data to the target broadcast channel (such as broadcast channels 37, 38, and 39), the frequency shift is successfully reduced to 2MHz and 1.5MHz using the single-frequency carrier signal generated by BLE 5.3 on the data channel (channels other than 37, 38, and 39). Thus, the frequency shifts for symbol 0 and symbol 1 are 2MHz and 1.5MHz respectively, which is more than ten times less than the system's 24MHz, significantly reducing power consumption and improving the system's communication efficiency.

[0088] Step 24: Passive chip 1 broadcasts the broadcast data packet.

[0089] Step 25: Electronic device 2 receives the broadcast data packet.

[0090] In some embodiments, please refer to Figure 9 This is a diagram of a BLE backscatter communication architecture provided by an embodiment of the present invention. Figure 9 As shown, taking commercial excitation sources as an example, the labels represent passive BLE chips and smart devices.

[0091] As is understood, the above method has already been specifically explained based on the wireless transmission method of the BLE backscatter system, and will not be repeated here.

[0092] This invention also provides a chip system, such as... Figure 10 As shown, the chip system includes at least one processor 1001 and at least one interface circuit 1002. The processor 1001 and the interface circuit 1002 are interconnected via lines. For example, the interface circuit 1002 can be used to receive signals from other devices (e.g., the chip system's antenna). As another example, the interface circuit 1002 can be used to send signals to other devices (e.g., the processor 1001). Exemplarily, the interface circuit 1002 can read instructions stored in memory and send those instructions to the processor 1001. When the instructions are executed by the processor 1001, the electronic device can perform the steps in the above embodiments. Of course, the chip system may also include other discrete devices, and this embodiment of the invention does not specifically limit this.

[0093] This invention also provides a computer storage medium that includes computer instructions. When the computer instructions are executed on the electronic device, the electronic device causes the electronic device to perform various functions or steps performed by the mobile phone in the above method embodiments.

[0094] This invention also provides a computer program product that, when run on a computer, causes the computer to perform the various functions or steps performed by the mobile phone in the above method embodiments.

[0095] Through the above description of the embodiments, those skilled in the art can clearly understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0096] In the several embodiments provided by this invention, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0097] The units described as separate components may or may not be physically separate. A component shown as a unit can be one or more physical units; that is, it can be located in one place or distributed in multiple different locations. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0098] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0099] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiments of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This software product is stored in a storage medium and includes several instructions to cause a device (which may be a microcontroller, chip, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0100] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A wireless communication method, characterized in that, The method is applied to a wireless communication system, which includes an excitation source, a passive chip, and a receiving device; the method includes: The excitation source generates a single-frequency carrier signal based on anti-whitening technology and sends the single-frequency carrier signal to the passive chip system. The passive chip is excited by the single-frequency carrier signal and generates broadcast data packets based on the single-frequency carrier signal; The passive chip broadcasts the broadcast data packet, wherein the broadcast data packet conforms to the broadcast data packet standard in the Bluetooth Low Energy communication protocol; The receiving device receives the broadcast data packet; The passive chip is excited by the single-frequency carrier signal and generates broadcast data packets based on the single-frequency carrier signal, including: The passive chip monitors the single-frequency carrier signal using an average detection method. The passive chip receives the single-frequency carrier signal; The passive chip performs backscattering processing on the single-frequency carrier signal to generate broadcast data packets.

2. The method according to claim 1, characterized in that, The excitation source generates a single-frequency carrier signal based on anti-whitening technology, including: The excitation source, based on the anti-whitening technology, constructs a character signal with a preset data structure in the broadcast data field of the broadcast data packet to generate a single-frequency carrier signal.

3. The method according to claim 2, characterized in that, The method further includes: The passive chip is excited by the single-frequency carrier signal and processes a portion of the data field of the single-frequency carrier signal in the data packet; The passive chip transmits its own data, enabling the receiving device that receives the broadcast data packet to obtain the valid information in the broadcast data packet.

4. The method according to any one of claims 2, characterized in that, The method further includes: The passive chip system broadcasts the broadcast data packet to the receiving device on the target broadcast channel.

5. The method according to any one of claims 2, characterized in that, The method further includes: The excitation source receives a single-frequency carrier signal generation instruction to generate a single-frequency carrier signal based on anti-whitening technology.

6. The method according to any one of claims 4 or 5, characterized in that, The method further includes: The passive chip broadcasts the broadcast data packet via the first broadcast channel; wherein the broadcast data packet includes the transmission time interval of the auxiliary data packet and the second broadcast channel information; The passive chip sends the broadcast data packet to the receiving device via the second broadcast channel.

7. A wireless communication system, characterized in that, include: Excitation source, passive chip, and receiving device; The excitation source is used to generate a single-frequency carrier signal based on anti-whitening technology and send the single-frequency carrier signal to the passive chip system. The passive chip is used to receive a single-frequency carrier signal from the excitation source, be excited by the single-frequency carrier signal, generate a broadcast data packet based on the single-frequency carrier signal, and broadcast the broadcast data packet, wherein the broadcast data packet conforms to the broadcast data packet standard in the Bluetooth Low Energy communication protocol. The receiving device is used to receive the broadcast data packet; The passive chip is also used to monitor the single-frequency carrier signal using an average detection method; receive the single-frequency carrier signal; and perform backscattering processing on the single-frequency carrier signal to generate broadcast data packets.

8. A passive chip, characterized in that, include: Memory, Bluetooth module, and one or more processors; The memory is used to store executable instructions of the processor; the memory, the Bluetooth module, and the processor are coupled together. The processor is configured to execute the instructions to implement the method as described in any one of claims 1-6.

9. A computer-readable storage medium storing computer instructions thereon, characterized in that, When the computer instructions are executed on an electronic device, they implement the method as described in any one of claims 1-6.

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