WO2021163955A1

WO2021163955A1 - Receiving method based on backscatter communication, device, and storage medium

Info

Publication number: WO2021163955A1
Application number: PCT/CN2020/076012
Authority: WO
Inventors: 张治�
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-02-20
Filing date: 2020-02-20
Publication date: 2021-08-26
Also published as: CN114730358A

Abstract

Disclosed in the present application is a receiving method based on backscatter communication, comprising: a first device receives a first backscatter signal based on a first carrier at a first time; the first device processes first information carried by the first backscatter signal; the first carrier is transmitted by a second device at a second time. Also disclosed in the present application are a device and a storage medium.

Description

A receiving method, equipment and storage medium based on backscatter communication

Technical field

This application relates to the field of wireless communication technology, and in particular to a receiving method, device and storage medium based on backscatter communication.

Background technique

In related technologies, in a vehicle-to-everything (V2X) communication network, how to effectively transmit information while simplifying the structure of the receiving end device has not yet been clarified.

Summary of the invention

To solve the above technical problems, embodiments of the present application provide a receiving method, device, and storage medium based on backscatter communication, which can effectively transmit information while simplifying the structure of the receiving end device.

In a first aspect, an embodiment of the present application provides a receiving method based on backscatter communication, including: a first device receives a first backscatter signal based on a first carrier at a first time; the first device responds to the The first information carried by the first backscatter signal is processed; wherein, the first carrier is transmitted by the second device at the second time.

In a second aspect, an embodiment of the present application provides a first device, where the first device includes:

A receiving unit, configured to receive a first backscatter signal based on a first carrier at a first time;

A processing unit, configured to process the first information carried by the first backscatter signal;

Wherein, the first carrier is transmitted by the second device at the second time.

In a third aspect, an embodiment of the present application provides a device that includes a processor and a memory for storing a computer program that can run on the processor, where the processor is used to run the computer program to execute the above-mentioned The steps of the receiving method of the scattered communication.

In a fourth aspect, an embodiment of the present application provides a chip, including a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the above-mentioned receiving method based on backscatter communication.

In a fifth aspect, an embodiment of the present application provides a storage medium storing an executable program, and when the executable program is executed by a processor, the foregoing receiving method based on backscatter communication is implemented.

In a sixth aspect, an embodiment of the present application provides a computer program product, including computer program instructions, which cause a computer to execute the foregoing receiving method based on backscatter communication.

In a seventh aspect, an embodiment of the present application provides a computer program that enables a computer to execute the foregoing receiving method based on backscatter communication.

The receiving method, device, and storage medium based on backscatter communication provided by the embodiments of the present application include: a first device receives a first backscatter signal based on a first carrier at a first time; the first device responds to the The first information carried by the first backscatter signal is processed; wherein, the first carrier is transmitted by the second device at the second time. In this way, by transmitting the first carrier on the second device, the first device receives the first backscatter signal based on the first carrier, and then obtains the first information carried by the first backscatter signal, which can prevent the first device from transmitting Signal and receive the strong interference caused by the scattered signal of the transmitted signal to realize the effective transmission of information; and there is no need to improve the structure and function of the receiver of the first device that receives the first information, which simplifies the first device Structure.

Description of the drawings

FIG. 1 is a schematic diagram of an optional processing flow of a receiving method based on backscatter communication according to an embodiment of this application;

2 is a schematic diagram of the composition structure of the first device in an embodiment of the application;

FIG. 3 is a schematic diagram of the hardware composition structure of a device according to an embodiment of the application.

Detailed ways

In order to have a more detailed understanding of the characteristics and technical content of the embodiments of the present application, the implementation of the embodiments of the present application will be described in detail below with reference to the accompanying drawings. The attached drawings are for reference and explanation purposes only, and are not used to limit the embodiments of the present application.

In a wireless communication system, the transmitter generates a carrier with a certain frequency or certain frequencies, and some useful information is superimposed on the carrier generated by the transmitter by means of amplitude/phase/frequency offset; the carrier carrying useful information is then transmitted to the carrier through the antenna In the space environment. In this process, for the transmitter, the main energy consumption occurs when the transmitter generates the carrier.

There are a large number of electromagnetic wave signals of various frequencies in the space environment. Backscatter communication is a technology that uses electromagnetic waves in the space environment to transmit useful information. In equipment that utilizes backscatter communication, since there is no radio frequency device that specifically generates carrier waves, the cost, power consumption, and volume of the equipment are very small. When such devices need to transmit information, they can use antennas to reflect electromagnetic waves in the space environment, and use meta-materials or diodes to superimpose the information that needs to be transmitted on the reflected electromagnetic waves. For example, you can change the reflection The frequency, phase and amplitude of the electromagnetic wave achieve the purpose of transmitting information.

Due to the small cost, power consumption and volume of the backscatter communication technology, it is very suitable for information transmission of environmental sensors; for example, temperature sensors and humidity sensors scattered in the environment use backscatter communication to collect data. The information is transmitted out. This type of sensor has a large demand and a wide range of dispersion. The use of backscatter communication can greatly extend the service life of the sensor battery; in some designs, it can even be used without battery power. So backscatter communication has very good application prospects in this kind of environmental sensors.

Backscatter communication relies on electromagnetic waves in the surrounding environment, but in some scenarios, when a sensor needs to transmit data, there may not be suitable electromagnetic waves in the surrounding environment. Although there are many sources of electromagnetic waves in the environment, because the structure of the equipment that uses backscatter communication is usually simple, the design of its reflective antenna will be relatively simple. If the surrounding electromagnetic waves do not match the reflective antenna of the device for backscatter communication, Therefore, the information collected by the backscatter communication equipment cannot be transmitted through electromagnetic waves in the environment.

In order to solve the above problems, a device that receives backscattered signals can be used to actively transmit electromagnetic waves of a specific frequency. The specific frequency is a frequency that can be supported by the antenna of the device that supports backscattered communication. The purpose of information transmission based on backscatter communication.

However, in this solution, the transmitter that emits electromagnetic waves used for backscatter communication and the receiver that receives the reflected signal are located on the same device, which will cause very serious self-interference (ie, interference from the transmitter to the receiver located on the same device). Since backscatter communication relies purely on reflected electromagnetic waves to transmit information, the transmission distance is generally not too far. Using the above method, the time interval from the transmitter sending out the signal to the receiver receiving the reflected signal is very short, usually less than one microsecond (us), so the time division method cannot be used to avoid the intensity of the transmitted signal on the received signal. interference.

In order to suppress the strong interference from the transmitter to the receiver. The methods that can be used include adding a filter at the front end of the receiver to filter out strong interference. Use digital methods to reconstruct and eliminate interference. Although the above-mentioned methods can solve the problem of strong interference from the transmitter to the receiver, the schemes are relatively complicated. Using any of the above methods will significantly increase the implementation complexity of the receiver, thereby increasing the cost of the receiver. As mentioned earlier, a relatively large use of backscatter communication is to collect signals from low-cost environmental sensors, but in order to solve the problem of strong self-interference, it will greatly increase the cost of using backscatter communication.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as device-to-device (D2D) communication, machine-to-machine (M2M) communication, and machine type communication (MTC) , And vehicle-to-vehicle (V2V) communication, etc. The embodiments of the present application can also be applied to these communication systems.

The system architecture and business scenarios described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. Those of ordinary skill in the art will know that with the network With the evolution of architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems.

An optional processing procedure of the receiving method based on backscatter communication provided by the embodiment of the present application, as shown in FIG. 1, includes the following steps:

Step S101: The first device receives a first backscatter signal based on a first carrier at a first time.

In some embodiments, the first carrier is transmitted by the second device at the second time; that is, the second device transmits the first carrier at the second time, and the first backscatter signal corresponding to the first carrier is transmitted by the The first device receives it at the first time.

Step S102: The first device processes the first information carried by the first backscatter signal.

In some embodiments, the first backscatter signal in step S101 includes information obtained by a third device; the third device may be a sensor, such as a temperature sensor, a humidity sensor, and other sensors capable of collecting various environmental information.

Correspondingly, when the first backscatter signal includes information acquired by a third device, the processing of the first information carried by the first backscatter signal by the first device in step S102 may include :

In the case that the first information is the same as the information broadcast by at least one third device at the third time, the first device prohibits broadcasting the first information; when the first information and at least one third device are If the information broadcasted at the third time is not the same, the first device broadcasts the first information. It can be understood that, if the first device receives the information broadcast by the third device at the third time, the first device compares the first information carried in the first backscatter signal with the third device The information broadcast at the third time is compared. If the two are consistent, the first device does not broadcast the first information; if the two are inconsistent, the first device broadcasts the first information. When the two are inconsistent, the first device and the second device both broadcast the information received by themselves, which helps to compensate for the problem of different information reception quality caused by different channel conditions.

In the following, taking the first device, the second device, and the fourth device as devices in the Internet of Vehicles, and the third device as a sensor as an example, the receiving method based on backscatter communication of the present application will be described in detail.

In an application scenario, the first device, the second device, and the fourth device all need to collect information collected by the third device (sensor) on both sides of the road, and the first device, the second device, and the fourth device can be based on The vehicle-to-vehicle communication system, such as Vehicle-to-Everything (V2X) technology or dedicated Short Range Communications (DSRC) technology based on wireless fidelity (Wireless Fidelity, WIFI) is formed A communication group. After the communication group is formed, the frequency used for backscatter communication is divided into channels in the time domain, and the channels of this frequency are divided into different time periods, such as T1, T2, T3... etc. The communication group includes three vehicles, car 1, car 2, and car 3; the channel is divided into three time periods T1, T2, and T3; then the receiving method based on backscatter communication in the embodiment of the present application includes:

Step a: At time T1, car 1 transmits the carrier signal used for backscatter communication, while car 2 and car 3 listen to whether there is a backscatter signal; if there is a backscatter signal, car 2 and car 3 receive and demodulate Out the information carried on the backscattered signal.

Step b: At time T2, if car 2 receives and demodulates the information carried on the backscatter signal, car 2 broadcasts the received information to car 1 and car 3 at time T2. The frequency used by the car 2 broadcast may be a frequency negotiated in advance by the communication group, or a frequency different from the frequency used for backscatter communication.

Here, since the car 1 cannot receive the backscatter signal when transmitting the carrier signal in step a; then in step b, the car 1 can obtain the information collected by the third device through the broadcast of the car 2.

In some embodiments, if car 2 does not demodulate the required information, car 2 may not send any information or send a negative signal; the negative signal is used to notify car 1 and car 3 that car 2 has not received any information. information.

Step c: At time T3, if car 3 does not receive the signal reflected by the third device, car 3 may not send any information or send a negative signal. The negative signal is used to notify car 1 and car 2 that car 3 is not Any information received. If car 3 receives the signal reflected by the third device and successfully demodulates it, and car 2 does not send any information or sends a negative signal at time T2, then car 3 broadcasts the received signal to car 1 and car 2 at time T3 information. If car 3 receives the signal reflected by the third device and successfully demodulates it, and car 2 broadcasts the reflected information received by car 2 at time T2, car 3 needs to compare the information received and demodulated by itself with the information broadcast by car 2 For comparison, if the two are consistent, then car 3 does not need to send any information at T3 time; if the two are not consistent, then car 3 broadcasts the information received by car 3 to car 1 and car 2 at T3 time.

Here, due to the different positions of car and car, the quality of the reflected signals received by car 2 and car 3 is likely to be different, which may cause some of the signals received by car 2 and car 3 to be demodulated, while others are not. It can be demodulated; or the contents of the information demodulated by car 2 and car 3 are different. By broadcasting the information received by both car 2 and car 3, it helps to compensate for the problem of different signal reception quality caused by different channel conditions.

Step d, if neither car 2 nor car 3 receives any information at time T2 and T3, the communication group can start to renegotiate a new round of transmission and reception order; for example, car 2 transmits backscatter communication The carrier signal used is received backscattered signals by car 1 and car 3; and then step a to step c are performed.

Optionally, if the communication group does not receive any backscatter signal after repeating step a to step c in the newly negotiated order, it may be because there is no third device that can detect it, the communication group can suspend the negotiation And transmit the carrier signal used for backscatter communication.

In other embodiments, the first information carried by the first backscatter signal in step S101 includes the identification information of the third device and/or the type of information obtained by the third device; in this way, the first device The type of the third device and the identification corresponding to the third device can be known, so that the first device can further confirm whether it is necessary to receive and/or demodulate the information collected by the third device included in the backscatter signal. Optionally, in addition to the identification information of the third device and/or the type of information obtained by the third device, the first information may also include: frequency information of a second carrier, where the second carrier is determined by The second device transmits at the fourth time; the second carrier may carry the information obtained by the third device.

It can be understood that one or more of the identification information of the third device, the type of information obtained by the third device, and the frequency information of the second carrier is carried on the first carrier; the second carrier is carried on the second carrier. 3. Information obtained by the device. If the first device determines that the first device needs to obtain the information collected by the first device according to the identification information of the third device carried by the first carrier and/or the type of information obtained by the third device, The first device may further obtain the information collected by the third device based on the backscatter signal of the second carrier.

Here, since the information carried on the first carrier is relatively fixed, a relatively fixed and reliable modulation method, such as frequency-shift keying (FSK) modulation, can be used for the reflected signal of the first carrier; , Which can ensure the reliability of the information carried on the first carrier.

Wherein, the third device may be a sensor, such as a temperature sensor, a humidity sensor, and other sensors capable of collecting various environmental information.

Correspondingly, in the case that the first information includes the identification information of the third device and/or the type of information acquired by the third device, in step S102, the first device responds to the first backscattered signal The processing of the carried first information may include:

When the first information is the same as the information broadcast by at least one third device at the fifth time, the first device prohibits broadcasting the second information; when the first information and at least one third device are If the information broadcasted at the fifth time is not the same, the first device broadcasts the second information. It can be understood that, if the first device receives the information broadcast by the third device at the third time, the first device compares the first information carried in the first backscatter signal with the third device The information broadcast at the third time is compared. If the two are consistent, the first device does not broadcast the first information; if the two are inconsistent, the first device broadcasts the first information. When the two are inconsistent, the first device and the second device both broadcast the information received by themselves, which helps to compensate for the problem of different information reception quality caused by different channel conditions.

Optionally, in the case where the first information carried by the first backscatter signal includes the identification information of the third device and/or the type of information obtained by the third device, the method may further include:

Step S103: The first device receives the second backscatter signal based on the second carrier at the sixth time, and processes the second information carried by the second backscatter signal.

In some embodiments, the second information includes information obtained by the third device.

In some embodiments, the processing of the second information carried by the second backscatter signal by the first device may include: when the second information is the same as the information broadcast by the at least one third device at the seventh time In the case that the first device prohibits broadcasting the second information; in the case that the second information is different from the information broadcast by at least one third device at the seventh time, the first device broadcasts the Second information.

In the embodiment of the present application, the third device can respond to the first carrier and the second carrier to two different incident frequencies through two antennas; so that the first device can learn the type and type of the third device through the first carrier. The identifier corresponding to the third device facilitates the first device to further confirm whether it needs to receive and/or demodulate the information collected by the third device included in the backscatter signal of the second carrier, so as to improve the first device to collect the information obtained by the third device s efficiency. Moreover, since the information carried on the first carrier is relatively fixed, a relatively fixed and reliable modulation method can be used for the reflected signal of the first carrier to ensure the reliability of the information carried on the first carrier.

In an application scenario, the first device, the second device, and the fourth device all need to collect information collected by the third device (sensor) on both sides of the road, and the first device, the second device, and the fourth device can be based on The vehicle-to-vehicle communication system, such as V2X technology or WIFI-based DSRC technology, forms a communication group. After the communication group is formed, the frequency used for backscatter communication is divided into channels in the time domain, and the channels of this frequency are divided into different time periods, such as T1, T2, T3... etc. The communication group includes three vehicles, car 1, car 2, and car 3; the channel is divided into three time periods T1, T2, and T3; then the receiving method based on backscatter communication in the embodiment of the present application includes:

Step e: On the first carrier, car 1 transmits the carrier signal used for backscatter communication at time T1, while car 2 and car 3 listen to whether there is a backscatter signal; if there is a backscatter signal, car 2 and car 3 Receive and demodulate the information carried on the backscatter signal.

Step f: On the first carrier, if car 2 does not receive any information at time T2, car 3 does not receive any information at time T3; then car 1 no longer transmits signals. If car 2 receives the second information at time T2, and/or car 3 receives the second information at time T3; and the vehicles in the communication group according to the identification information of the third device included in the second information and/or When the type of information obtained by the third device determines that the information obtained by the third device needs to be collected, the vehicles that need to collect the information obtained by the third device form a new communication group; The vehicle collects the information obtained by the third device on the second carrier. The process for the vehicles in the new communication group to collect the information obtained by the third device on the second carrier is the same as the process from step a to step c above, and will not be repeated here.

It should be noted that if the information collected by the vehicles in the new communication group on the second carrier corresponds to the identification information of the third device indicated on the first carrier, that is, the information of the third device indicated on the first carrier is all If the vehicle in the new communication group is obtained by the reflected signal of the second carrier, the vehicle in the new communication group stops the process of collecting the information obtained by the third device. Otherwise, the vehicles in the new communication group creatively negotiate a new round of transmission and reception order, and then perform the operations from a to step c on the second carrier. Optionally, a maximum number of repetitions for performing steps a to c can be set; when the maximum number of repetitions is reached, the process of collecting information obtained by the third device is stopped even if the information obtained by the third device is not collected.

It should be understood that in the various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application. The implementation process constitutes any limitation.

To implement the foregoing receiving method based on backscatter communication, an embodiment of the present application provides a first device. An optional structural schematic diagram of the first device 200, as shown in FIG. 2, includes:

The receiving unit 201 is configured to receive a first backscatter signal based on a first carrier at a first time;

The processing unit 202 is configured to process the first information carried by the first backscatter signal;

In some embodiments, the first information includes: information obtained by a third device.

In some embodiments, the processing unit 202 is configured to prohibit broadcasting the first information when the first information is the same as the information broadcast by at least one third device at the third time.

In some embodiments, the processing unit 202 is configured to broadcast the first information when the first information is different from the information broadcast by at least one third device at the third time.

In some embodiments, the first information includes:

The identification information of the third device and/or the type of information obtained by the third device.

In some embodiments, the first information further includes: frequency information of a second carrier, and the second carrier is transmitted by the second device at the fourth time.

In some embodiments, the processing unit 202 is configured to prohibit broadcasting the second information when the first information is the same as the information broadcast by at least one third device at the fifth time.

In some embodiments, the processing unit 202 is configured to broadcast the second information when the first information is different from the information broadcast by the at least one third device at the fifth time.

In some embodiments, the receiving unit 201 is further configured to receive the second backscatter signal based on the second carrier at the sixth time;

The processing unit 202 is further configured to process second information carried by the second backscatter signal.

In some embodiments, the second information includes: information obtained by the third device.

In some embodiments, the processing unit 202 is configured to prohibit broadcasting the second information when the second information is the same as the information broadcast by at least one third device at the seventh time.

In some embodiments, the processing unit 202 is configured to broadcast the second information when the second information is different from the information broadcast by at least one third device at the seventh time.

An embodiment of the present application also provides a device, including a processor and a memory for storing a computer program that can run on the processor, where the processor is configured to execute the above-mentioned backscatter-based communication when the computer program is running. The steps of the receiving method.

An embodiment of the present application also provides a chip, including a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the above-mentioned receiving method based on backscatter communication.

An embodiment of the present application also provides a storage medium storing an executable program, and when the executable program is executed by a processor, the foregoing receiving method based on backscatter communication is implemented.

An embodiment of the present application also provides a computer program product, including computer program instructions, which cause a computer to execute the foregoing receiving method based on backscatter communication.

An embodiment of the present application also provides a computer program that enables a computer to execute the above-mentioned receiving method based on backscatter communication.

3 is a schematic diagram of the hardware composition structure of a device (a first device or a second device) according to an embodiment of the present application. The device 700 includes: at least one processor 701, a memory 702, and at least one network interface 704. The various components in the device 700 are coupled together through the bus system 705. It can be understood that the bus system 705 is used to implement connection and communication between these components. In addition to the data bus, the bus system 705 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, various buses are marked as the bus system 705 in FIG. 3.

It can be understood that the memory 702 may be a volatile memory or a non-volatile memory, and may also include both volatile and non-volatile memory. Among them, the non-volatile memory can be ROM, Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), and electrically erasable Programmable read-only memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), magnetic random access memory (FRAM, ferromagnetic random access memory), flash memory (Flash Memory), magnetic surface memory, optical disk, or CD-ROM (CD) -ROM, Compact Disc Read-Only Memory); Magnetic surface memory can be disk storage or tape storage. The volatile memory may be a random access memory (RAM, Random Access Memory), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (SRAM, Static Random Access Memory), synchronous static random access memory (SSRAM, Synchronous Static Random Access Memory), and dynamic random access memory. Memory (DRAM, Dynamic Random Access Memory), Synchronous Dynamic Random Access Memory (SDRAM, Synchronous Dynamic Random Access Memory), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM, Double Data Rate Synchronous Dynamic Random Access Memory), enhanced Type synchronous dynamic random access memory (ESDRAM, Enhanced Synchronous Dynamic Random Access Memory), synchronous connection dynamic random access memory (SLDRAM, SyncLink Dynamic Random Access Memory), direct memory bus random access memory (DRRAM, Direct Rambus Random Access Memory) ). The memory 702 described in the embodiment of the present application is intended to include, but is not limited to, these and any other suitable types of memory.

The memory 702 in the embodiment of the present application is used to store various types of data to support the operation of the device 700. Examples of such data include: any computer program used to operate on the device 700, such as the application program 7022. The program for implementing the method of the embodiment of the present application may be included in the application program 7022.

The method disclosed in the foregoing embodiment of the present application may be applied to the processor 701 or implemented by the processor 701. The processor 701 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method can be completed by an integrated logic circuit of hardware in the processor 701 or instructions in the form of software. The aforementioned processor 701 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and the like. The processor 701 may implement or execute the methods, steps, and logical block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor or the like. Combining the steps of the method disclosed in the embodiments of the present application, it may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and the storage medium is located in the memory 702. The processor 701 reads the information in the memory 702 and completes the steps of the foregoing method in combination with its hardware.

In an exemplary embodiment, the device 700 may be implemented by one or more Application Specific Integrated Circuits (ASIC, Application Specific Integrated Circuit), DSP, Programmable Logic Device (PLD, Programmable Logic Device), and Complex Programmable Logic Device (CPLD, Complex Programmable Logic Device), FPGA, general-purpose processor, controller, MCU, MPU, or other electronic components are used to implement the aforementioned methods.

This application is described with reference to flowcharts and/or block diagrams of methods, devices (systems), and computer program products according to embodiments of this application. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment are generated It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device. The device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment. The instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

It should be understood that the terms "system" and "network" in this application are often used interchangeably herein. The term "and/or" in this application is merely an association relationship describing associated objects, which means that there can be three types of relationships. For example, A and/or B can mean that there is A alone, and both A and B exist. There are three cases of B. In addition, the character "/" in this application generally indicates that the associated objects before and after are in an "or" relationship.

The above are only the preferred embodiments of this application and are not used to limit the scope of protection of this application. Any modification, equivalent replacement and improvement made within the spirit and principle of this application shall be included in Within the scope of protection of this application.

Claims

A receiving method based on backscatter communication, the method comprising:

The first device receives the first backscatter signal based on the first carrier at the first time;

The first device processes the first information carried by the first backscatter signal;

Wherein, the first carrier is transmitted by the second device at the second time.
The method according to claim 1, wherein the first information comprises: information obtained by a third device.
The method according to claim 2, wherein the processing of the first information carried by the first backscatter signal by the first device comprises:

In a case where the first information is the same as the information broadcast by at least one third device at the third time, the first device prohibits broadcasting the first information.
The method according to claim 2, wherein the processing of the first information carried by the first backscatter signal by the first device comprises:

In a case where the first information is different from the information broadcast by at least one third device at the third time, the first device broadcasts the first information.
The method of claim 1, wherein the first information includes:

The identification information of the third device and/or the type of information obtained by the third device.
The method according to claim 5, wherein the first information further comprises: frequency information of a second carrier, and the second carrier is transmitted by the second device at a fourth time.
The method according to claim 5 or 6, wherein the processing of the first information carried by the first backscatter signal by the first device comprises:

In a case where the first information is the same as the information broadcast by at least one third device at the fifth time, the first device prohibits broadcasting the second information.
The method according to claim 5 or 6, wherein the processing of the first information carried by the first backscatter signal by the first device comprises:

In a case where the first information is different from the information broadcast by at least one third device at the fifth time, the first device broadcasts the second information.
The method according to any one of claims 5 to 8, wherein the method further comprises:

The first device receives the second backscatter signal based on the second carrier at the sixth time;

The first device processes the second information carried by the second backscatter signal.
The method according to claim 9, wherein the second information comprises: information obtained by the third device.
The method according to claim 9 or 10, wherein the processing of the second information carried by the second backscatter signal by the first device comprises:

In a case where the second information is the same as the information broadcast by at least one third device at the seventh time, the first device prohibits broadcasting the second information.
The method according to claim 9 or 10, wherein the processing of the second information carried by the second backscatter signal by the first device comprises:

In a case where the second information is different from the information broadcast by at least one third device at the seventh time, the first device broadcasts the second information.
A first device, the first device includes:

A receiving unit, configured to receive a first backscatter signal based on a first carrier at a first time;

A processing unit, configured to process the first information carried by the first backscatter signal;

Wherein, the first carrier is transmitted by the second device at the second time.
The first device according to claim 13, wherein the first information comprises: information obtained by the third device.
The first device according to claim 14, wherein the processing unit is configured to prohibit broadcasting the first information when the first information is the same as the information broadcast by at least one third device at the third time. information.
The first device according to claim 14, wherein the processing unit is configured to broadcast the first information when the first information is different from the information broadcast by at least one third device at the third time. information.
The first device according to claim 13, wherein the first information includes:

The identification information of the third device and/or the type of information obtained by the third device.
The first device according to claim 17, wherein the first information further comprises: frequency information of a second carrier, and the second carrier is transmitted by the second device at a fourth time.
The first device according to claim 17 or 18, wherein the processing unit is configured to prohibit broadcasting the Second information.
The first device according to claim 17 or 18, wherein the processing unit is configured to broadcast the Second information.
The first device according to any one of claims 17 to 20, wherein the receiving unit is further configured to receive a second backscatter signal based on a second carrier at a sixth time;

The processing unit is further configured to process second information carried by the second backscatter signal.
The first device according to claim 21, wherein the second information comprises: information obtained by the third device.
The first device according to claim 21 or 22, wherein the processing unit is configured to prohibit broadcasting of the Second information.
The first device according to claim 21 or 22, wherein the processing unit is configured to broadcast the Second information.
A device that includes a processor and a memory for storing computer programs that can run on the processor, wherein:

When the processor is used to run the computer program, it executes the steps of the receiving method based on backscatter communication according to any one of claims 1 to 12.
A storage medium storing an executable program, and when the executable program is executed by a processor, the receiving method based on backscatter communication according to any one of claims 1 to 12 is realized.
A computer program product, comprising computer program instructions that cause a computer to execute the receiving method based on backscatter communication according to any one of claims 1 to 12.
A computer program that enables a computer to execute the receiving method based on backscatter communication according to any one of claims 1 to 12.
A chip comprising: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the receiving method based on backscatter communication according to any one of claims 1 to 12.