Wireless communication method and system, passive chip and storage medium

Abstract

The embodiment of the invention provides a wireless communication method, a system passive chip and a storage medium, and relates to the technical field of wireless communication, the method can be applied to a wireless communication system, and the wireless communication system comprises an excitation source, the passive chip and receiving equipment. The specific scheme is as follows: an excitation source generates a single-frequency carrier signal based on an anti-whitening technology, and sends the single-frequency carrier signal to a passive chip; the passive chip is excited by a 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, and the broadcast data packet conforms to a broadcast data packet standard in a Bluetooth low-power-consumption communication protocol. And the receiving equipment receives the broadcast data packet. According to the invention, a signal transmission system with low power consumption and high efficiency is constructed, dependence of a passive chip on a radio frequency source is avoided, and a wireless communication system is simplified.

Description

Technical Field

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

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

[0003] Traditional BLE communication systems usually rely on independent power supplies to provide power to electronic devices so that they can communicate. However, passive devices do not have independent power supplies, and they achieve backscatter data transmission by collecting radio frequency energy signals. Therefore, backscatter communication technology has received widespread attention in the Internet of Things as a low-power communication method, and this communication method has the advantages of reducing device power consumption and extending battery life. Introducing BLE into the backscatter communication system will help to further improve Internet of Things communications. However, the existing BLE backscatter system needs to be improved in terms of signal stability, communication distance and power consumption. Summary of the invention

[0004] The present invention provides a wireless communication method, a system passive chip and a storage medium, which can realize the construction of a low-power, high-efficiency signal transmission system, avoid the dependence of the passive chip on a radio frequency source, and simplify 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, an embodiment of the present invention provides a wireless communication method, which can be applied to a wireless communication system. The wireless communication system includes an excitation source, a passive chip, and a receiving device.

[0007] In a specific implementation, the method includes: an excitation source generates a single-frequency carrier signal based on an anti-whitening technology, and sends 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 complies with the broadcast data packet standard in the Bluetooth low energy communication protocol. A receiving device receives the broadcast data packet.

[0008] It is understandable that the passive chip is excited by the excitation signal, so the passive chip does not need to set up a radio frequency source, which effectively simplifies the structure of the wireless communication system. In addition, the passive chip broadcasts broadcast data packets that comply with the Bluetooth low-power communication protocol, which is a low-power and high-efficiency wireless communication method.

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

[0010] In this way, the wireless communication system can provide a longer communication distance and higher transmission efficiency.

[0011] In combination with the first aspect, in another possible implementation, the excitation source generates a single-frequency carrier signal based on the de-whitening technology, including: the excitation source constructs a character signal of a preset data structure in the broadcast data field of the broadcast data packet based on the de-whitening technology to generate a single-frequency carrier signal.

[0012] It can be understood that the excitation information generated by the excitation source based on the anti-whitening technology can drive the passive chip in the passive chip system and provide energy for the passive chip so that the wireless communication system can operate effectively.

[0013] In combination with the first aspect, in another possible implementation manner, 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.

[0014] The passive chip sends the data it carries, so that the receiving device that receives the broadcast data packet can obtain the valid information in the broadcast data packet.

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

[0016] In combination with the first aspect, in another possible implementation, the excitation source receives a single-frequency carrier signal generation instruction to generate the single-frequency carrier signal based on an inverse whitening technology.

[0017] In combination 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 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.

[0018] In a second aspect, an embodiment of the present invention further provides a wireless communication system, 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 the anti-whitening technology, and send the single-frequency carrier signal to the passive chip system.

[0020] The passive chip is used to receive the 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 complies with the broadcast data packet standard in the Bluetooth low energy communication protocol.

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

[0022] In combination with the second aspect, in a possible implementation, the passive chip is also used to: monitor 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 a broadcast data packet.

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

[0024] In combination 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 part of the data field of the single-frequency carrier signal in the data packet. The passive chip sends the data it carries so that a receiving device that receives the broadcast data packet obtains valid information in the broadcast data packet.

[0025] In combination with the second aspect, in another possible implementation, the passive chip system broadcasts the broadcast data packet to the receiving device on a target broadcast channel.

[0026] In combination with the second aspect, in another possible implementation, the excitation source is further configured to, upon receiving a single-frequency carrier signal generation instruction, generate a single-frequency carrier signal based on an inverse whitening technique.

[0027] In combination with the second aspect, in another possible implementation, the passive chip is also used 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] In a third aspect, an embodiment of the present invention further provides a chip system, comprising: at least one processor and at least one interface circuit, wherein the at least one processor and the at least one interface circuit are interconnected via lines.

[0029] The processor is configured to execute instructions. When the processor executes the instructions, the implementation steps of the passive chip in the above-mentioned first aspect and any possible implementation manner thereof, and the second aspect and any possible implementation manner thereof can be implemented.

[0030] In a fourth aspect, the present invention further 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 in the first aspect and any possible implementation manner thereof.

[0031] In a fifth aspect, the present invention further provides a server, which may include a processor and a memory for storing instructions executable by the processor; wherein the processor is configured to execute the instructions to implement the method in the first aspect and any possible implementation manner thereof.

[0032] In a sixth aspect, the present invention further provides a computer-readable storage medium having computer instructions stored thereon, which, when executed on an electronic device, implement the method mentioned in the first aspect or the second aspect and any possible implementation manner thereof.

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

[0034] Figure 1 is a schematic structural diagram of a passive chip provided by an embodiment of the present invention;

[0035] Figure 2 is a flow chart of a wireless communication method provided by an embodiment of the present invention;

[0036] Figure 3 is a circuit structure diagram for generating a de-whitening sequence provided by an embodiment of the present invention;

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

[0038] Figure 5 is another schematic diagram of the division of the Bluetooth broadcast data packet structure provided by 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 7It is a spectrum shifting power diagram in a BLE4.0 backscattering system provided by an embodiment of the present invention;

[0041] Figure 8 It is a spectrum shifting power diagram in a BLE5.3 backscattering system provided by an embodiment of the present invention;

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

[0043] Fig.10 It is a schematic diagram of a chip system structure provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0044] In order to facilitate the understanding of the present invention, the professional terms involved in the embodiments of the present invention are explained below.

[0045] Passive components: refers to those components that cannot convert energy (such as electrical energy) into electrical signals and output them. For example, resistors, capacitors, inductors, etc. These components can work without the input of external energy.

[0046] Backscatter communication: When the RF signal reaches the surface of an object, part of it will be reflected. The strength of the reflected signal depends on the shape and material of the object, as well as the distance from the object where the RF signal was emitted. Moreover, the object can modulate the sensory data it obtains onto the reflected signal. In other words, backscatter communication is a wireless transmission technology that does not require a transmitter and can achieve signal transmission and encoding.

[0047] De-whitening technology: During Bluetooth data transmission (or broadcasting) between electronic devices, the party sending the data will scramble the data packet. This process is called data whitening. Specifically, it is to add a random sequence to the data packet to be sent. Among them, 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 by the random sequence. If a data packet of all "0" or all "1" is obtained after whitening, this is the de-whitening technology.

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

[0049] As we all know, BLE backscatter communication technology has made significant progress in academia and industry in recent years. At the same time, the BLE backscatter system still faces a series of technical challenges.

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

[0051] On the other hand, the frequency of spectrum shift is large, making the system unable to work stably. Specifically, in the BLE 4.0 backscatter system, the spectrum shift is usually large. The BLE protocol stipulates that the frequency offset of the symbols "0" and "1" at the center frequency must reach 250kHz, and 500kHz is optimal. And the frequency shift may reach 24MHz or even higher when transmitted between different broadcast channels. Such a frequency shift range not only increases the complexity of the system, but may also increase the error rate of the received signal, affecting the stability and reliability of the communication. Especially in an environment with weak signals or more interference, the increase in frequency shift will make the system unable to work stably.

[0052] On the other hand, the current BLE backscatter system design is complex. Specifically, in order to perform effective backscattering, the current BLE backscatter system needs to adjust and synchronize the frequency between the broadcast channel and the data channel, which requires BLE devices to be able to establish a connection and exchange data in the connected state. Therefore, the backscatter signal cannot be received when there is no connection, which makes the implementation and deployment of the backscatter system more complicated.

[0053] On the other hand, the BLE backscatter system relies heavily on dedicated radio frequencies. Specifically, since commercial radio frequency sources in the county cannot be used directly, the BLE backscatter system requires a customized radio frequency source. In addition, such systems often require more hardware support, resulting in high deployment costs and difficulty in promoting large-scale applications.

[0054] Based on the above problems, an embodiment of the present invention provides a wireless communication method, which is applied to a wireless communication system (or may be called a BLE backscatter system, hereinafter referred to as a BLE backscatter system). The BLE backscatter system uses a passive chip and an excitation source. Among them, the excitation source can be an existing commercial excitation source. The problem of designing and using a radio frequency source is solved. Therefore, it is possible to build a low-power, high-efficiency signal transmission system while avoiding the dependence of the passive chip on the radio frequency source and simplifying the BLE backscatter system.

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

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

[0057] In some implementations, the excitation source may be an existing commercial excitation source.

[0058] Please refer to Figure 1 , is a schematic diagram of the structure of a passive chip provided by 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 embodiment 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 shown in the figure, or combine some components, or split some components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

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

[0061] The processor 210 may also be provided with a memory for storing instructions and data. In some embodiments, the 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 convert it into an electromagnetic wave to be radiated through the antenna 1.

[0063] It is understandable that the interface connection relationship between the modules illustrated in the embodiment of the present invention is only a schematic illustration and does not constitute a structural limitation on the passive chip 200. In other embodiments of the present invention, the passive chip 200 may also adopt different interface connection methods in the above embodiments, or a combination of multiple interface connection methods.

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

[0065] Those skilled in the art will appreciate that the structural diagram of the electronic device shown in the embodiment of the present invention does not constitute a limitation on the structure of the electronic device. In actual applications, the electronic device may include more or fewer components as shown, or may combine certain components, or may rearrange the components.

[0066] Exemplarily, the electronic device in the embodiment of the present invention may be a mobile phone, a tablet computer, a desktop, a laptop, a handheld computer, a notebook computer, a vehicle-mounted device, an ultra-mobile personal computer (UMPC), a netbook, a cellular phone, a personal digital assistant (PDA), an augmented reality (AR) or virtual reality (VR) device, etc. The embodiment of the present invention does not impose any special restrictions on the specific form of the electronic device.

[0067] The wireless communication method provided by the embodiment of the present invention will be described below in conjunction with a Bluetooth data transmission scenario.

[0068] It is worth mentioning that in order to overcome the problems of BLE backscatter system in terms of signal stability, communication distance and power consumption, the BLE protocol has been updated. The method provided in the embodiment of the present invention is based on BLE 5.3 (the version name of another Bluetooth low energy communication protocol) protocol design.

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

[0070] The method in the embodiment of the present invention is applied to a BLE backscatter communication system as an example for explanation. The BLE backscatter communication system includes an excitation source, a passive chip 1, and an electronic device 2. In some embodiments, the excitation source may be a commercial excitation source, the passive chip 1 is an electronic device including a BLE 5.3 passive chip, and the electronic device 2 may be an electronic device such as a mobile phone or a tablet that can perform Bluetooth communication.

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

[0072] It should be noted that when Bluetooth data is transmitted in the air, the sent data packets will be scrambled, that is, the data will be whitened, which can enhance the data's anti-interference ability. The random sequence used for whitening is generated by the following formula 1:

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

[0074] For more details, please refer to Figure 3 , is a circuit structure diagram of generating a reverse whitening sequence provided by an embodiment of the present invention. Figure 3 As shown, numbers 1 to 7 represent shift registers. The initial value of the shift register is determined by the communication channel, position 0 is set to 1, and positions 1 to 6 are set to the binary sequence of the channel number. When the communication channel is determined, the whitened random sequence is also determined, so the broadcast data can be determined by the random sequence, generating a broadcast packet with all 0s or all 1s after whitening.

[0075] For example, take BLE4.0 broadcast data packet as an example. Figure 4 , is a schematic diagram of the structure division of a Bluetooth broadcast data packet provided by an embodiment of the present invention. Among them, the data packet preamble and access address are determined. When the data is determined, the header and cyclic redundancy check (CRC) check are also determined. After the broadcast data is whitened, a maximum of 37 bytes of data can be generated that is all 0 or all 1, that is, Figure 4 The data part of the data packet is the maximum length of the single-frequency carrier generated by the BLE 4.0 commercial chip, so the maximum length is 248μs. BLE 4.0 broadcast data packets can only be transmitted on channels 37, 38, and 39. The single-frequency carrier signal generated by the backscatter system using the traditional BLE 4.0 has a short transmission length, and the frequency shift is large when performing frequency shift modulation, which limits the communication efficiency.

[0076] For example, take BLE5.3 broadcast data packet as an example. Figure 5, which is a schematic diagram of the division of a Bluetooth broadcast data packet structure provided by an embodiment of the present invention. That is, the BLE 5.3 broadcast data packet structure. It can be seen that the maximum size of the Adv Data part is 254 bytes. By using the de-whitening technology, the single-frequency carrier signal generated by the BLE 5.3 radio can be expanded to 254 bytes, thereby greatly increasing the transmission data capacity of the backscatter tag and reducing the probability of communication interruption. Specifically, the maximum effective data capacity length of the BLE 5.3 broadcast data packet is 254 bytes, so that the single-frequency carrier signal duration can reach 2032μs, which is significantly higher than the 248μs limit of the traditional BLE 4.0.

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

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

[0079] Among them, the BLE 5.3 passive chip refers to a chip that supports the BLE 5.3 protocol and can be used commercially. The purpose of using this chip is to achieve the expansion of single-frequency carrier signals.

[0080] Specifically, the passive chip in the passive chip 1 can be a passive BLE chip that supports the BLE protocol. The chip can be powered by collecting radio signals in the environment, and its own data can be packaged into a broadcast packet in the structure of a BLE broadcast packet. The BLE communication protocol stipulates that GFSK is the modulation method, and BFSK modulation is used in the reflective communication system, and the modulated signal can be received by the smart device.

[0081] In some implementations, the subcarrier clock and the BLE baseband signal are initially FSK modulated, and the modulation tube is controlled by the offset subcarrier signal to modulate the continuous wave reflection to load the data inside the tag.

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

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

[0084] Among them, F CW is the external carrier, f SC is the offset subcarrier, δf BLE is the reflection offset. The protocol requires the reflection offset δf BLE ≥185KHz, the embodiment of the present invention adopts the reflection offset δf BLE =500KHz.

[0085] It is understandable that BLE 4.0 advertising data packets can only be transmitted on advertising channels 37, 38, and 39, and the corresponding center frequencies of these channels are 2402MHz, 2426MHz, and 2480MHz. Figure 7 As shown in FIG. 1 , the BLE 4.0 backscatter system provided by the embodiment of the present invention is performing spectrum shifting power diagram. Figure 7 As shown in FIG. 1 , when the BLE 4.0 backscatter system performs spectrum shifting, the shifted frequency value usually reaches 24 MHz or higher, which not only increases the power consumption of the system but also may cause signal distortion.

[0086] In addition, BLE 5.3 adds eight new extended advertising packet types, among which the working channel of the ADV_EXT_IND packet is limited to the main advertising channel (37, 38, 39), while the remaining seven types can be broadcast on the second advertising channel. These advertising packets transmitted and obtained on the second advertising channel are called auxiliary packets. The receiving device receives the ADV_EXT_IND packet transmitted on the main advertising channel, reads the time interval and the second advertising channel number of the auxiliary packet transmission carried by it, plans to receive the required auxiliary packet on the specified second advertising channel, and reads the broadcast data information of the auxiliary packet.

[0087] Please refer to Figure 8 , which is a spectrum shifting power diagram in a BLE 5.3 backscatter system provided by an embodiment of the present invention. Figure 8 As shown in the figure, in the BLE 5.3 backscatter system, the extended broadcast data packet of BLE 5.3 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 single-frequency carrier signal generated by BLE 5.3 in the data channel (except channels 37, 38 and 39) is used for frequency shift, and the frequency shift is successfully reduced to 2MHz and 1.5MHz. In this way, the frequency shifts of symbol 0 and symbol 1 are 2MHz and 1.5MHz respectively, which is reduced by more than ten times compared with the system's 24MHz, significantly reducing power consumption and improving the communication efficiency of the system.

[0088] Step 24: The 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 Fig. 9 , is a BLE backscatter communication architecture diagram provided by an embodiment of the present invention. Fig. 9 As shown, taking a commercial stimulus source as an example, the tag represents a passive BLE chip and a smart device.

[0091] It can be understood that the above method has been specifically described based on the wireless transmission method of the BLE backscatter system, and will not be repeated here.

[0092] The embodiment of the present invention also provides a chip system, such as Fig.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 can be interconnected via lines. For example, the interface circuit 1002 can be used to receive signals from other devices (such as the antenna of the chip system). For another example, the interface circuit 1002 can be used to send signals to other devices (such as the processor 1001). Exemplarily, the interface circuit 1002 can read the instructions stored in the memory and send the instructions to the processor 1001. When the instructions are executed by the processor 1001, the electronic device can execute the various steps in the above embodiments. Of course, the chip system may also include other discrete devices, which are not specifically limited in the embodiments of the present invention.

[0093] An embodiment of the present invention further provides a computer storage medium, which includes computer instructions. When the computer instructions are executed on the above electronic device, the electronic device executes each function or step executed by the mobile phone in the above method embodiment.

[0094] The embodiment of the present invention further provides a computer program product. When the computer program product is run on a computer, the computer is enabled to execute each function or step executed by the mobile phone in the above method embodiment.

[0095] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned 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 the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0097] The units described as separate components may or may not be physically separated, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0098] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0099] If the integrated unit is implemented in the form of 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 embodiment of the present invention is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a device (which can be a single-chip microcomputer, chip, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program code.

[0100] The above contents are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A wireless communication method, characterized in that: Applied to a wireless communication system, the wireless communication system 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 an anti-whitening technique, 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 a broadcast data packet based on the single-frequency carrier signal; The passive chip broadcasts the broadcast data packet, wherein the broadcast data packet complies with a broadcast data packet standard in a Bluetooth low energy communication protocol; The receiving device receives the broadcast data packet.

2. The method according to claim 1, characterized in that The method further comprises: 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 backscatter processing on the single-frequency carrier signal to generate a broadcast data packet.

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

4. The method according to claim 3, characterized in that The method further comprises: The passive chip is excited by the single-frequency carrier signal and processes a part of the data field of the single-frequency carrier signal in the data packet; The passive chip sends the data it carries, so that a receiving device that receives the broadcast data packet can obtain valid information in the broadcast data packet.

5. The method according to any one of claims 1 to 2 and 3, characterized in that: The method further comprises: The passive chip system broadcasts the broadcast data packet to a receiving device on a target broadcast channel.

6. The method according to any one of claims 1-2 and 3, characterized in that: The method further comprises: The excitation source receives a single-frequency carrier signal generation instruction to generate a single-frequency carrier signal based on an anti-whitening technique.

7. The method according to any one of claims 5 or 6, characterized in that: The method further comprises: The passive chip broadcasts 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; The passive chip sends the broadcast data packet to the receiving device on the second broadcast channel.

8. A wireless communication system, characterized in that: include: Excitation source, passive chip and receiving equipment; The excitation source is used to generate a single-frequency carrier signal based on an anti-whitening technique, and send the single-frequency carrier signal to the passive chip system; The passive chip is used to receive the 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; broadcast the broadcast data packet, wherein the broadcast data packet complies with the broadcast data packet standard in the Bluetooth low energy communication protocol; The receiving device is used to receive the broadcast data packet.

9. A passive chip, characterized in that: include: processor, a Bluetooth module and one or more processors; The memory is used to store instructions executable by the processor; the processor, the Bluetooth module and the processor are coupled; The processor is configured to execute the instructions to implement the method according to any one of claims 1 to 5.

10. A computer-readable storage medium having computer instructions stored thereon, characterized in that: When the computer instructions are executed on an electronic device, the method according to any one of claims 1 to 7 is implemented.

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