Information sending method and apparatus, information configuration method and apparatus, and communication device

Abstract

The present application relates to the technical field of communications, and discloses an information sending method and apparatus, an information configuration method and apparatus, and a communication device. The information sending method of embodiments of the present application comprises: a first device acquiring first information; on the basis of the first information, determining or executing a first behavior, wherein the first behavior comprises: generating a first signal; on the basis of the first signal and a received radio frequency carrier signal, generating a backscatter modulation signal; and sending the backscatter modulation signal.

Description

Information sending method, configuration method, device and communication equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202311633766.9 filed in China on November 30, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to an information sending method, configuration method, device and communication equipment. Background Art

[0004] In related technologies, backscatter modulators typically only utilize RF carrier signals sent by third-party devices (such as reader / writers) for modulation. Consequently, most backscatter modulation methods can only implement double-sideband modulation (DSB) through time-domain multiplication or direct baseband modulation of the RF carrier signal. This wastes power and bandwidth and fails to meet diverse communication performance and power consumption requirements. Therefore, effectively implementing low-power and spectrally efficient backscatter modulation to meet diverse communication performance and power consumption requirements is an urgent issue. Summary of the Invention

[0005] The embodiments of the present application provide an information sending method, configuration method, apparatus and communication equipment, which can solve the problem of how to effectively achieve low power consumption and high spectral efficiency backscatter modulation.

[0006] In a first aspect, a method for sending information is provided, which is performed by a first device. The method includes:

[0007] The first device obtains first information;

[0008] The first device determines or executes a first behavior based on the first information; wherein the first behavior includes: generating a first signal, generating a backscatter modulated signal based on the first signal and the received radio frequency carrier signal, and sending the backscatter modulated signal.

[0009] In a second aspect, an information configuration method is provided, which is performed by a fifth device. The method includes:

[0010] The fifth device sends first information to the first device; wherein the first information is used to determine or execute a first behavior, and the first behavior includes: generating a first signal, generating a backscattered modulated signal based on the first signal and the radio frequency carrier signal, and sending the backscattered modulated signal.

[0011] In a third aspect, an information sending apparatus is provided, applied to a first device, including:

[0012] An acquisition module, configured to acquire first information;

[0013] An execution module is used to determine or execute a first behavior based on the first information; wherein the first behavior includes: generating a first signal, generating a backscattered modulated signal based on the first signal and the received radio frequency carrier signal, and sending the backscattered modulated signal.

[0014] In a fourth aspect, an information configuration apparatus is provided, which is applied to a fifth device and includes:

[0015] A sending module is used to send first information to a first device; wherein the first information is used to determine or execute a first behavior, and the first behavior includes: generating a first signal, generating a backscattered modulated signal based on the first signal and a radio frequency carrier signal, and sending the backscattered modulated signal.

[0016] In a fifth aspect, a communication device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0017] In the sixth aspect, a communication device is provided, including a processor and a communication interface. For example, when the communication device is a first device, the processor is used to obtain first information, and determine or execute a first behavior based on the first information; or, when the communication device is a fifth device, the communication interface is used to send first information to the first device, and the first information is used to determine or execute a first behavior; the first behavior includes: generating a first signal, generating a backscattered modulated signal based on the first signal and a radio frequency carrier signal, and sending the backscattered modulated signal.

[0018] In the seventh aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0019] In an eighth aspect, a wireless communication system is provided, comprising at least one of a first device and a fifth device, wherein the first device can be used to execute the steps of the method described in the first aspect, and the fifth device can be used to execute the steps of the method described in the second aspect.

[0020] In the ninth aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0021] In the tenth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0022] Through the solution in the embodiment of the present application, the first device (i.e., the backscatter device) can obtain the first information and determine or execute the first behavior based on the first information; the first behavior includes: generating a first signal, generating a backscatter modulation signal based on the first signal and the received radio frequency carrier signal, and sending the backscatter modulation signal. Therefore, by reasonably configuring or indicating the first information, the first device (i.e., the backscatter device) can implement diversified backscatter modulation based on the first signal (such as an intermediate frequency signal / square wave signal, etc.) generated by it independently, thereby effectively realizing low-power and high-spectral-efficiency backscatter modulation to meet different communication performance (such as communication rate, communication distance, etc.) and power consumption requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG1A is a schematic structural diagram of a backscatter communication device in an embodiment of the present application;

[0024] FIG1B is a schematic diagram of a backscatter communication modulation process in an embodiment of the present application;

[0025] FIG1C is a schematic diagram of an intermediate frequency orthogonal backscatter modulation process in an embodiment of the present application;

[0026] FIG1D is a schematic diagram of a single-sideband backscatter modulation process in an embodiment of the present application;

[0027] FIG2 is a flow chart of an information sending method provided in an embodiment of the present application;

[0028] FIG3 is a flow chart of an information configuration method provided in an embodiment of the present application;

[0029] Figures 4A, 4B, 4C, and 4D are schematic diagrams of the network deployment architecture in Example 3 of the present application;

[0030] FIG5 is a schematic diagram of the signaling configuration process in Example 4 of the present application;

[0031] FIG6 is a schematic structural diagram of an information sending device provided in an embodiment of the present application;

[0032] FIG7 is a schematic diagram of the structure of an information configuration device provided in an embodiment of the present application;

[0033] FIG8 is a schematic structural diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0035] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects, for example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0036] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th Generation (6G) communication systems.

[0037] In order to facilitate understanding of the embodiments of the present application, the following contents are first described.

[0038] Backscatter Communication (BSC) is a typical passive IoT device that uses radio frequency signals from other devices or the environment to modulate the signal and transmit its own information. As shown in Figure 1A, the basic components and main functions of the backscatter communication transmitter include:

[0039] -Antenna unit: used to receive RF signals and control commands, and also used to send modulated backscattered signals.

[0040] Energy harvesting module or power supply module: This module is used by the backscatter communication device to harvest RF energy or other energy sources, including but not limited to solar energy, kinetic energy, mechanical energy, and thermal energy. In addition to the energy harvesting module, a battery power supply module may also be included, making the backscatter communication device semi-passive. The energy harvesting module or power supply module provides power to all other modules in the device.

[0041] -Microcontroller: includes control of baseband signal processing, energy storage or data scheduling status, switch switching, system synchronization, etc.

[0042] -Signal receiving module: used to demodulate control commands or data sent by the backscatter communication receiving end or other network nodes.

[0043] - Coding and modulation module: performs channel coding and signal modulation under the control of the controller, and realizes modulation by selecting different load impedances under the control of the controller through the selection switch.

[0044] -Memory or sensor module: used to store device identification information, location information or sensor data, etc.

[0045] In addition to the typical components mentioned above, future backscatter communication transmitters can also integrate tunnel diode amplifier modules, low-noise amplifier modules, etc. to improve the receiving sensitivity and transmission power of the transmitter.

[0046] Optionally, the basic building blocks and main functions of the backscatter communication receiving end include:

[0047] -Antenna unit: used to receive the modulated backscattered signal.

[0048] - Backscatter signal detection module: used to detect the backscatter signal sent by the backscatter communication transmitter, including but not limited to amplitude shift keying (ASK) detection, phase shift keying (PSK) detection, frequency shift keying (FSK) detection or quadrature amplitude modulation (QAM) detection, etc.

[0049] -Demodulation and decoding module: demodulates and decodes the detected signal to restore the original information stream.

[0050] Backscatter communication equipment controls the reflection coefficient Γ of the modulation circuit by adjusting its internal impedance, thereby changing the amplitude, frequency, phase, etc. of the incident signal to achieve signal modulation. The modulation circuit can be shown in Figure 1B, and the reflection coefficient Γ can be expressed as:

[0051] Where Z0 is the antenna characteristic impedance; Z1 is the load impedance; j represents a complex number, θ T Indicates the phase. Assume that the incident signal is represented by S in (t), the output signal is Therefore, by properly controlling the reflection coefficient, corresponding amplitude modulation, frequency modulation, or phase modulation can be achieved. Based on this, backscatter communication devices can be tags in traditional radio frequency identification (RFID) or passive or semi-passive Internet of Things (IoT) devices. Here, backscatter communication devices are collectively referred to as BSC devices.

[0052] Traditional backscatter communication achieves amplitude modulation, frequency modulation, or phase modulation by varying the load impedance and properly controlling the reflection coefficient. This method of implementing backscatter communication by switching the load impedance is also known as load-modulated backscatter communication. This method has the advantages of simplicity and low power consumption at low modulation orders. Therefore, load-modulated backscatter communication is primarily used in communication systems with low data rates or low modulation orders.

[0053] As demand for backscatter communication data rates increases in some scenarios, higher-order modulation can be used to improve the communication rate of backscatter communication systems. In one possible high-order modulation structure, backscatter communication modulation is achieved by varying the bias voltage of solid-state devices (such as diodes / transistors) to achieve load impedances with different reflection coefficients.

[0054] In addition to the modulation structure of transistors and power dividers, silicon-based or germanium-based high electron mobility transistor (HEMT) devices can also be used in backscatter communication systems to achieve adjustable load impedance, that is, to achieve backscatter communication based on load modulation.

[0055] In order to further reduce the power consumption of backscatter communication equipment during high-order modulation, a low-power modulation structure based on intermediate frequency quadrature backscattering modulation (IFQBM) is proposed, which can effectively reduce the power consumption of backscatter equipment during high-order modulation or high-speed transmission. Unlike the traditional load impedance-based backscatter modulation end that completely utilizes a third-party RF carrier signal for modulation, the intermediate frequency quadrature modulator IFQB has the ability to independently generate an intermediate frequency signal. The relevant modulation principle is as follows: the IFQBM modulator generates an intermediate frequency local oscillator signal and completes quadrature modulation at a specified intermediate frequency through the intermediate frequency local oscillator signal; then, the obtained modulated signal must be up-converted to the carrier frequency. In the IFQBM modulator, the radio frequency (RF) carrier signal sent by a third-party device (such as a reader) is used as the local oscillator source for up-conversion, which can reduce power consumption overhead. As shown in Figure 1C, the IFQBM modulator uses an IF modulation signal (the intermediate frequency local oscillator signal f in Figure 1C) to generate an intermediate frequency signal. IF , and superimposes the baseband in-phase component I and the baseband quadrature component Q), instead of using the baseband data signal (as shown in f in Figure 1C). data ) and uses an RF carrier signal from a third-party device (f in Figure 1C) RF ) The intermediate frequency IF modulated signal f IF Up-converted to the carrier frequency, therefore, the IFQBM modulator can complete the orthogonal modulation signal at the intermediate frequency without using an active carrier generation circuit, thereby avoiding the large power consumption overhead brought by RF devices, thereby achieving high-order modulation with high spectrum efficiency while maintaining low power consumption.

[0056] In a possible implementation scheme to improve the spectrum efficiency of backscatter communication, the backscatter communication device can realize single sideband modulation (SSB) by controlling the reflection coefficient of the load impedance. Since the upper and lower sidebands of the bandpass signal after double-sideband modulation contain useful modulation signals, the useful modulation signal can be recovered by using only the upper sideband or the lower sideband. Single sideband modulation SSB is modulated by one of the sidebands to obtain higher bandwidth and power efficiency. Similar to the phase-shift-based SSB modulation in active communication, the single sideband modulation signal x in backscatter communication is ssb (t) can be regarded as a special implementation of Quadrature Amplitude Modulation (QAM), which can be expressed as:

[0057] Where x(t) represents the modulated baseband signal, is the Hilbert transform of x(t), f c represents the carrier frequency of the signal, The Hilbert transform can be viewed as a linear filter, which shifts the incident signal by -90° in the positive frequency band and 90° in the negative frequency band, which can be viewed as a delay of the signal within a quarter of a cycle.

[0058] For backscatter modulation, the backscatter signal is a function of the incident RF carrier signal and the reflection coefficient, which can be expressed as:

[0059] Among them, s(t) is the control signal of the load impedance, that is, the baseband signal to be modulated, which is generally a square wave signal. is the Hilbert transform of the signal s(t), The signal The instantaneous reflection coefficient during control, cos(2πf CW t) represents the radio frequency carrier signal.

[0060] From the expression of the backscattered modulated signal, it can be seen that it is the same as the single-sideband modulated signal x ssb (t) is very similar, only the instantaneous reflection coefficient needs to be effectively set A single-sideband backscatter modulation (SSB-BSM) signal can be generated, and the real and imaginary parts of the complex domain reflection coefficient are respectively controlled by the control signal s(t) and In one possible implementation, assuming that the backscatter device supports four complex reflection coefficients, as shown in Figure 1D, the instantaneous reflection coefficient and the control signal s(t) The mapping relationship is as follows:

[0061] Among them, |Γ0|=|Γ1|=|Γ2|=|Γ3|, and the phases corresponding to the four reflection coefficients are evenly spaced on the Smith original map. If the reflection coefficient is written as the sum of the real part and the imaginary number, that is, Ae jφ =Γ I +jΓ Q , then the backscattered modulated signal It can be expressed as:

[0062] Based on this, a single-sideband modulated signal can be obtained. According to the same principle, by changing the "-" in the backscattered signal to "+", the single-sideband modulated signal of the other sideband can be obtained.

[0063] Optionally, the solution in this application can be applied to LTE systems, 5G NR systems and NR evolution systems, such as 6G systems and 6G evolution systems, as well as IEEE 802.11 systems (such as WiFi systems), Bluetooth systems, Long Range Radio (LoRa) systems, Zigbee systems, wireless optical communication systems, low-power communication systems, backscatter communication systems, etc.

[0064] The information sending method, configuration method, apparatus and communication device provided in the embodiments of the present application are described in detail below with reference to some embodiments and their application scenarios in conjunction with the accompanying drawings.

[0065] Please refer to Figure 2, which is a flowchart of a method for sending information provided by an embodiment of the present application. The method is performed by a first device, such as a backscatter communication device with a certain carrier generation capability. As shown in Figure 2, the method includes the following steps:

[0066] Step 21: The first device obtains first information;

[0067] Step 22: The first device determines or executes a first action based on the first information; the first action includes: generating a first signal, generating a backscatter modulated signal based on the first signal and the received RF carrier signal, and sending the backscatter modulated signal.

[0068] In the embodiment of the present application, the first signal is not a baseband data signal, but can be understood as a carrier signal autonomously generated by the first device and used to perform backscatter modulation together with the received RF carrier signal. For example, the first signal can be a sinusoidal intermediate frequency signal to implement intermediate frequency quadrature backscatter modulation (IFQBM), thereby effectively achieving low-power high-order backscatter modulation; alternatively, the first signal can be a square wave control signal to implement single-sideband backscatter modulation (SSB-BSM), thereby improving the power efficiency and bandwidth efficiency of the backscatter communication device.

[0069] The above-mentioned determination of the first behavior can be understood as follows: after the first device obtains the first information, it determines to generate a first signal (such as a sinusoidal intermediate frequency signal or a square wave control signal) based on the first information, rather than a baseband data signal, and determines to generate and send a backscatter modulated signal based on the generated first signal and the received radio frequency carrier signal. The above-mentioned execution of the first behavior can be understood as follows: after the first device obtains the first information, it directly generates a first signal (such as a sinusoidal intermediate frequency signal or a square wave control signal) based on the first information, rather than a baseband data signal, and generates and sends a backscatter modulated signal based on the generated first signal and the received radio frequency carrier signal.

[0070] Optionally, the first information may be determined by the first device, or may be configured or indicated by other devices.

[0071] For example, the first device may receive the radio frequency carrier signal from a second device, where the second device is a device that provides the radio frequency carrier signal, such as a radio frequency carrier source device.

[0072] For example, the first device may send the backscatter modulated signal to a third device, where the third device is a receiving device of the backscatter modulated signal.

[0073] Therefore, by reasonably configuring or indicating the first information, the first device (i.e., the backscattering device) can realize diverse backscattering modulation according to the first signal (such as a sinusoidal intermediate frequency signal / square wave control signal, etc.) autonomously generated according to the indication information, thereby effectively realizing low-power and high-spectral-efficiency backscattering modulation to meet different communication performance (such as communication rate, communication distance, etc.) and power consumption requirements.

[0074] Optionally, the first information includes but is not limited to at least one of the following:

[0075] parameter information of the first signal; based on this parameter information, the first device can generate a corresponding first signal, thereby implementing different backscatter modulation modes to meet different communication performance (such as communication rate, communication distance, etc.) and power consumption requirements;

[0076] Frequency or bandwidth related information of the backscatter modulated signal; the first device generates a corresponding backscatter modulated signal based on the frequency or bandwidth related information;

[0077] a signal transmission parameter of the backscatter modulated signal; and a first device transmitting the backscatter modulated signal based on the signal transmission parameter;

[0078] The signal transmission parameters of the radio frequency carrier signal; the first device accurately receives the radio frequency carrier signal based on the signal transmission parameters.

[0079] Optionally, the parameter information of the first signal includes but is not limited to at least one of the following:

[0080] The center frequency of the first signal;

[0081] a signal bandwidth of the first signal;

[0082] The waveform type of the first signal, such as a sine wave, a square wave, etc.;

[0083] the amplitude or power of the first signal;

[0084] The maximum frequency error ppm allowed by the first signal;

[0085] Time domain related information of the first signal, such as signal period, signal length, etc.;

[0086] The type identifier of the first signal, wherein each type of first signal is associated with at least one signal parameter; for example, four types of first signals can be pre-configured or agreed upon by protocol, and each type corresponds to specific frequency, bandwidth, waveform and other parameters; when indicating the parameter information of the first signal, it is only necessary to indicate the corresponding type identifier; the parameters associated with each type of first signal can be configured by a high-level layer, or agreed upon by protocol, or configured during factory settings.

[0087] Optionally, the frequency or bandwidth related information of the backscattered modulated signal includes but is not limited to at least one of the following:

[0088] The signal bandwidth of the backscattered modulated signal;

[0089] The center frequency of the backscattered modulation signal;

[0090] The lowest frequency point and signal bandwidth of the backscattered modulation signal;

[0091] The highest frequency point and signal bandwidth of the backscattered modulation signal;

[0092] The lowest frequency point and the highest frequency point of the backscattered modulation signal;

[0093] an indication of the signal bandwidth and upper and lower sidebands of the backscatter modulated signal;

[0094] The frequency point indication of the backscatter modulation signal may be pre-configured by the network or system, and each frequency point corresponds to a specific center frequency and bandwidth.

[0095] Optionally, the signal transmission parameters of the backscatter modulated signal include but are not limited to at least one of the following:

[0096] A modulation mode of the backscatter modulation signal;

[0097] The modulation order or modulation level of the backscatter modulation signal;

[0098] the modulation rate or link frequency of the backscatter modulated signal;

[0099] The time domain resources of the backscatter modulated signal, such as signal period, signal length, etc.;

[0100] The signal power or reflection coefficient of the backscattered modulated signal;

[0101] The coding method of the backscatter modulation signal, such as line coding, channel coding, etc.;

[0102] The signal waveform of the backscatter modulation signal is, for example, a sine wave, a square wave, etc.;

[0103] A synchronization sequence corresponding to the backscatter device identifier;

[0104] A reference signal for the backscattered modulated signal.

[0105] Optionally, the signal transmission parameters of the radio frequency carrier signal include but are not limited to at least one of the following:

[0106] The signal waveform of the radio frequency carrier signal;

[0107] The transmission power of the radio frequency carrier signal;

[0108] Time domain resource information of the radio frequency carrier signal, such as but not limited to signal length, signal period, time interval between periodic signals, time window, etc.;

[0109] Frequency domain resource information of the radio frequency carrier signal, such as but not limited to signal bandwidth, center frequency, etc.;

[0110] The synchronization sequence or preamble code of the radio frequency carrier signal.

[0111] Optionally, the process of generating a backscatter modulated signal according to the first signal and the received radio frequency carrier signal may include at least one of the following:

[0112] The first device performs time domain multiplication on the first signal and the radio frequency carrier signal to obtain the backscatter modulated signal; in this case, the backscatter modulated signal is a double-sideband intermediate frequency orthogonal backscatter modulated signal;

[0113] The first device multiplies the first signal by the radio frequency carrier signal in the time domain, and processes the obtained signal through a bandwidth filter to obtain the backscatter modulated signal; in this case, the backscatter modulated signal is a single-sideband backscatter modulated signal based on a filtering method;

[0114] The first device uses the first signal as an input signal for controlling the load impedance and multiplies it with the radio frequency carrier signal to obtain the backscatter modulation signal; in this case, the backscatter modulation signal is a single-sideband backscatter modulation signal based on a phase shift method;

[0115] The first device generates a second signal based on the first signal and the received radio frequency carrier signal, and performs signal processing on the second signal to obtain the backscatter modulated signal. For example, the signal processing may include, but is not limited to, pilot insertion, training sequence insertion, reference signal insertion, precoding processing, pulse shaping processing, and the like.

[0116] Optionally, the first device may be, but is not limited to, any of the following:

[0117] Devices that perform backscatter modulation based on load modulation;

[0118] transistor-based devices for backscatter modulation;

[0119] Devices based on intermediate frequency orthogonal backscatter modulation, or devices capable of generating intermediate frequency carriers;

[0120] A device that does not have the ability to generate a radio frequency carrier and performs backscatter modulation based on the received radio frequency carrier signal.

[0121] In the embodiment of the present application, the first device may obtain the first information in a variety of ways. The above-mentioned obtaining of the first information may include at least one of the following:

[0122] The first device determines the first information, that is, the first device itself has the ability to determine the configuration information;

[0123] The first device receives the first information from the second device, where the second device is a device that provides a radio frequency carrier signal; for example, the second device may be a reader in a monostatic backscatter system or a dedicated radio frequency source device in a bistatic backscatter system;

[0124] The first device receives first information from a third device, where the third device is a receiving device for a backscatter modulated signal; for example, the third device is a receiving device in a bistatic backscatter system;

[0125] The first device receives first information from a fourth device, where the fourth device is a device having a network scheduling function, such as a gateway, a router, an access network device, etc.

[0126] It should be noted that, in addition to the above-mentioned method of determining or configuring / indicating the first information, the first information can also be configured / indicated by at least two of the first to fourth devices: (I) Multiple devices respectively configure part of the first information and form the complete first information; for example, the second device configures the signal parameter information of the radio frequency carrier signal for the first device, and the third device that receives and demodulates the backscatter modulation signal configures the parameter information of the first signal and the parameter information of the backscatter modulation signal for the first device. (II) One device configures multiple groups of first information through high-layer signaling, and the other device activates one group of first information among the multiple groups of first information through physical layer or media access control (MAC) layer signaling. For example, the fourth device configures multiple groups of first information for the first device, and the third device activates one group of first information through downlink control information (DCI), sidelink control information (SCI) or layer 1 (L1) signaling.

[0127] Optionally, the first information may be determined according to at least one of the following:

[0128] Capability information of the first device; this capability information includes at least information related to the capability of the first device to generate a carrier signal, such as supported carrier frequencies, bandwidths, filter capabilities, transmitter structures, backscatter modulation types, frequency deviation performance in ppm, modulation methods, coding capabilities, etc.;

[0129] Capability information of the second device; this capability information includes at least capability information related to generating radio frequency carrier signals, such as supported radio frequency carrier frequencies, bandwidths, signal types, etc.;

[0130] Capability information of the third device; for example, this capability information includes at least information related to the receiver architecture of the third device (such as a superheterodyne receiver architecture, a zero intermediate frequency receiver architecture, a low intermediate frequency receiver architecture, etc.), operating bandwidth, operating frequency, demodulation mode, decoding capability, etc.;

[0131] Channel state information, signal quality information, or communication statistical information between the first device and the third device; for example, the signal quality information includes but is not limited to Reference Signal Received Power (RSRP), Received Signal Strength Indication (RSSI), Signal-to-Noise Ratio (SNR), Signal to Interference plus Noise Ratio (SINR), Signal to Interference Ratio (SIR), etc.; the communication statistical information includes but is not limited to the number of consecutive successful positive acknowledgment (ACK), the number of negative acknowledgment (NACK), and the block error rate (BLER);

[0132] Device status information of the first device; for example, the device status information includes at least the current power level of the first device, an overheating warning, etc.;

[0133] Device status information of the third device; for example, the device status information includes at least the current battery level, overheating warning, etc. of the third device;

[0134] Request information of the first device; for example, the request information may be generated by the first device according to its own state or service requirements.

[0135] Data type information or service quality (QoS) information; optionally, the data type information or QoS information comes from the application layer or the protocol upper layer.

[0136] Please refer to FIG3 , which is a flowchart of an information configuration method provided in an embodiment of the present application. The method is performed by the fifth device. As shown in FIG3 , the method includes the following steps:

[0137] Step 31: The fifth device sends first information to the first device; the first information is used to determine or execute a first behavior, and the first behavior includes: generating a first signal, generating a backscattered modulated signal based on the first signal and the radio frequency carrier signal, and sending the backscattered modulated signal.

[0138] In the embodiment of the present application, the first signal is not a baseband data signal, but can be understood as a carrier signal autonomously generated by the first device and used to perform backscatter modulation together with the received RF carrier signal. For example, the first signal can be a sinusoidal intermediate frequency signal to implement intermediate frequency quadrature backscatter modulation (IFQBM), thereby effectively achieving low-power high-order backscatter modulation; or the first signal can be a square wave control signal to implement single-sideband backscatter modulation (SSB-BSM), thereby improving the power efficiency and bandwidth efficiency of the backscatter communication device.

[0139] The above-mentioned determination of the first behavior can be understood as follows: after the first device obtains the first information, it determines to generate a first signal (such as a sinusoidal intermediate frequency signal or a square wave control signal) based on the first information, rather than a baseband data signal, and determines to generate and send a backscatter modulated signal based on the generated first signal and the received radio frequency carrier signal. The above-mentioned execution of the first behavior can be understood as follows: after the first device obtains the first information, it directly generates a first signal (such as a sinusoidal intermediate frequency signal or a square wave control signal) based on the first information, rather than a baseband data signal, and generates and sends a backscatter modulated signal based on the generated first signal and the received radio frequency carrier signal.

[0140] Optionally, the fifth device may be any one of the following: a second device that provides a radio frequency carrier signal; a third device that receives a backscattered modulated signal; or a fourth device that has a network scheduling function.

[0141] Therefore, by reasonably configuring or indicating the first information, the first device (i.e., the backscattering device) can realize diverse backscattering modulation according to the first signal it generates autonomously (such as a sinusoidal intermediate frequency signal / square wave control signal, etc.), thereby effectively realizing low-power and high-spectral-efficiency backscattering modulation to meet different communication performance (such as communication rate, communication distance, etc.) and power consumption requirements.

[0142] Optionally, the first information includes but is not limited to at least one of the following:

[0143] parameter information of the first signal; based on this parameter information, the first device can generate a corresponding first signal, thereby implementing different backscatter modulation modes to meet different communication performance (such as communication rate, communication distance, etc.) and power consumption requirements;

[0144] Frequency or bandwidth related information of the backscatter modulated signal; based on the frequency or bandwidth related information, the first device can generate a corresponding backscatter modulated signal;

[0145] signal transmission parameters of the backscatter modulated signal; based on the signal transmission parameters, the first device can transmit the backscatter modulated signal;

[0146] The signal transmission parameters of the radio frequency carrier signal; based on the signal transmission parameters, the first device can accurately receive the radio frequency carrier signal.

[0147] Optionally, the parameter information of the first signal includes but is not limited to at least one of the following:

[0148] The center frequency of the first signal;

[0149] a signal bandwidth of the first signal;

[0150] The waveform type of the first signal, such as a sine wave, a square wave, etc.;

[0151] the amplitude or power of the first signal;

[0152] The maximum frequency error ppm allowed by the first signal;

[0153] Time domain related information of the first signal, such as signal period, signal length, etc.;

[0154] The type identifier of the first signal, wherein each type of first signal is associated with at least one signal parameter; for example, four types of first signals can be pre-configured or agreed upon by protocol, and each type corresponds to specific frequency, bandwidth, waveform and other parameters; when indicating the parameter information of the first signal, it is only necessary to indicate the corresponding type identifier; the parameters associated with each type of first signal can be configured by a high-level layer, or agreed upon by protocol, or configured during factory settings.

[0155] Optionally, the frequency or bandwidth related information of the backscattered modulated signal includes but is not limited to at least one of the following:

[0156] The signal bandwidth of the backscattered modulated signal;

[0157] The center frequency of the backscattered modulation signal;

[0158] The lowest frequency point and signal bandwidth of the backscattered modulation signal;

[0159] The highest frequency point and signal bandwidth of the backscattered modulation signal;

[0160] The lowest frequency point and the highest frequency point of the backscattered modulation signal;

[0161] an indication of the signal bandwidth and upper and lower sidebands of the backscatter modulated signal;

[0162] The frequency point indication of the backscatter modulation signal may be pre-configured by the network or system, and each frequency point corresponds to a specific center frequency and bandwidth.

[0163] Optionally, the signal transmission parameters of the backscatter modulated signal include but are not limited to at least one of the following:

[0164] A modulation mode of the backscatter modulation signal;

[0165] The modulation order or modulation level of the backscatter modulation signal;

[0166] the modulation rate or link frequency of the backscatter modulated signal;

[0167] The time domain resources of the backscatter modulated signal, such as signal period, signal length, etc.;

[0168] The signal power or reflection coefficient of the backscattered modulated signal;

[0169] The coding method of the backscatter modulation signal, such as line coding, channel coding, etc.;

[0170] The signal waveform of the backscatter modulation signal is, for example, a sine wave, a square wave, etc.;

[0171] A synchronization sequence corresponding to the backscatter device identifier;

[0172] A reference signal for the backscattered modulated signal.

[0173] Optionally, the signal transmission parameters of the radio frequency carrier signal include but are not limited to at least one of the following:

[0174] The signal waveform of the radio frequency carrier signal;

[0175] The transmission power of the radio frequency carrier signal;

[0176] Time domain resource information of the radio frequency carrier signal, such as but not limited to signal length, signal period, time interval between periodic signals, time window, etc.;

[0177] Frequency domain resource information of the radio frequency carrier signal, such as but not limited to signal bandwidth, center frequency, etc.;

[0178] The synchronization sequence or preamble code of the radio frequency carrier signal.

[0179] Optionally, the information configuration method in this embodiment may further include:

[0180] The fifth device determines the first information based on the second information, where the second information includes at least one of the following:

[0181] Capability information of the first device; this capability information includes at least information related to the capability of the first device to generate a carrier signal, such as supported carrier frequencies, bandwidths, filter capabilities, transmitter structures, backscatter modulation types, frequency deviation performance in ppm, modulation methods, coding capabilities, etc.;

[0182] Capability information of the second device; this capability information includes at least capability information related to generating radio frequency carrier signals, such as supported radio frequency carrier frequencies, bandwidths, signal types, etc.;

[0183] Capability information of the third device; for example, this capability information includes at least information related to the receiver architecture of the third device (such as a superheterodyne receiver architecture, a zero intermediate frequency receiver architecture, a low intermediate frequency receiver architecture, etc.), operating bandwidth, operating frequency, demodulation mode, decoding capability, etc.;

[0184] Channel state information, signal quality information, or communication statistical information between the first device and the third device; for example, the signal quality information includes but is not limited to Reference Signal Received Power (RSRP), Received Signal Strength Indication (RSSI), Signal-to-Noise Ratio (SNR), Signal to Interference plus Noise Ratio (SINR), Signal to Interference Ratio (SIR), etc.; the communication statistical information includes but is not limited to the number of consecutive successful positive acknowledgments (ACKs), the number of negative acknowledgments (NACKs), the block error rate (BLER), etc.;

[0185] Device status information of the first device; for example, the device status information includes at least the current power level of the first device, an overheating warning, etc.;

[0186] Device status information of the third device; for example, the device status information includes at least the current battery level, overheating warning, etc. of the third device;

[0187] Request information of the first device; for example, the request information may be generated by the first device according to its own state or service requirements.

[0188] Data type information or business quality of service QoS information; optionally, the data type information or business quality of service QoS information comes from the application layer or the protocol upper layer.

[0189] The present application is described below with reference to specific embodiments.

[0190] Example 1

[0191] This embodiment 1 mainly describes intermediate frequency orthogonal backscatter modulation. The first device can generate a required intermediate frequency signal (ie, the first signal) based on the acquired first information, and multiply it with the received radio frequency carrier signal to generate an intermediate frequency orthogonal backscatter modulation signal.

[0192] As shown in FIG1C , the first device (ie, the backscattering device) may generate a center frequency f according to the instruction of the first information. IF , a first signal with a bandwidth of B (such as an intermediate frequency carrier signal or an intermediate frequency local oscillator signal), and the first signal f is converted according to the instruction of the first information IF The received RF carrier signal f RF Multiply to generate the intermediate frequency orthogonal backscatter modulated signal f RF +f IF Wherein, the first information includes at least one of the following:

[0193] (a) Parameter information of the first signal, including at least any one of the following:

[0194] (I) the center frequency of the first signal;

[0195] (II) the bandwidth of the first signal;

[0196] (III) The waveform type of the first signal, which is a sine wave in this embodiment 1;

[0197] (IV) the amplitude of the first signal (e.g., voltage, current, etc.);

[0198] (IIV) Maximum frequency error allowed for the first signal in ppm;

[0199] (V) Signal length or time domain related information of the first signal.

[0200] (b) Information related to the frequency or bandwidth of the backscattered modulated signal, including at least one of the following:

[0201] (I) Signal bandwidth of the backscattered modulated signal;

[0202] (II) the center frequency of the backscattered modulated signal;

[0203] (III) The lowest frequency and signal bandwidth of the backscattered modulation signal;

[0204] (IV) The highest frequency and signal bandwidth of the backscattered modulation signal;

[0205] (IIV) The lowest and highest frequency points of the backscattered modulation signal;

[0206] (V) Signal bandwidth and upper and lower sideband indications of the backscattered modulated signal;

[0207] (VI) An indication of the frequency of the backscatter modulation signal, where the frequency is pre-configured by the network or system.

[0208] (c) Signal transmission parameters of the backscatter modulated signal, including at least one of the following: modulation mode, modulation order, modulation rate, time domain resources, signal length, signal power, coding mode, signal waveform, etc. of the second signal.

[0209] (d) Signal transmission parameters of the radio frequency carrier signal, including at least one of the following: waveform, transmission power, signal bandwidth, center frequency, signal length, signal period, synchronization sequence, etc. of the radio frequency carrier signal.

[0210] Through the solution in this embodiment 1, the first device can generate an intermediate frequency orthogonal backscatter modulation signal that meets the requirements of the working frequency band, working bandwidth, modulation rate, etc. according to the configuration or indication of the first information, thereby achieving high-order modulation while ensuring low power consumption.

[0211] Example 2

[0212] This embodiment 2 mainly describes single-sideband backscatter modulation. The first device can generate a required first signal (e.g., a square wave signal) based on the acquired first information. The first signal is then used as an input signal for controlling the instantaneous reflection coefficient of the device and multiplied by the received RF carrier signal to generate a single-sideband backscatter modulated signal.

[0213] As shown in FIG1D , the first device (ie, the backscattering device) may generate a signal with a center frequency of f according to the instruction of the first information. IF , a first signal (such as a square wave signal) with a bandwidth of B, the first signal carries the information to be modulated by the first device; assuming that s(t) is the first signal, is the Hilbert transform of the signal s(t); from the expression of the backscattered modulated signal, it can be seen that it is the same as the single-sideband modulated signal x ssb (t) is very similar, only the instantaneous reflection coefficient needs to be effectively set A single-sideband backscatter modulated signal can be generated, and the real and imaginary parts of its complex domain reflection coefficient are respectively affected by the control signal (baseband signal to be modulated) s(t) and In one possible implementation, assuming that the first device supports four complex reflection coefficients, as shown in FIG1D , the instantaneous reflection coefficient and the control signal s(t) The mapping relationship is as follows:

[0214] Among them, |Γ0|=|Γ1|=|Γ2|=|Γ3|, and the phases corresponding to the four reflection coefficients are evenly distributed on the Smith original image.

[0215] In this embodiment 2, according to the instruction of the first information, the reflection coefficient determined by the first signal and its Hilbert transform can be combined with the received radio frequency carrier signal f RF =cos(2πf CW t) to generate a single-sideband backscatter modulated signal If the reflection coefficient is written as the sum of the real part and the imaginary number, that is, Ae jφ =Γ I +jΓ Q , then the backscattered modulated signal It can be expressed as:

[0216] Based on this, a single-sideband backscattered modulated signal can be obtained.

[0217] It should be noted that the specific content of the first information in this embodiment 2 can be found in the above embodiment 1 and will not be repeated here. The main difference is that the waveform type of the first signal involved in this embodiment 2 is a square wave signal.

[0218] Through the solution in this embodiment 2, the first device can generate a single-sideband backscatter modulation signal that meets the requirements of the working frequency band, working bandwidth, modulation rate, etc. according to the configuration or indication of the first information, thereby achieving high-order modulation while ensuring low power consumption.

[0219] Example 3

[0220] In this embodiment 3, the signaling interaction process between the first device and other devices (such as the second device, the third device or the fourth device) under several typical network deployment architectures is mainly provided.

[0221] In a typical single-base architecture as shown in Figure 4A, the second device and the third device are the same device, that is, the second device is both a device that receives and demodulates the backscatter modulated signal, and also a device that provides the radio frequency carrier signal to the first device, and also a device that configures and indicates the first information to the first device. In addition, the device that provides the radio frequency carrier signal to the first device can also be the third device. In this case, the second device (i.e., the third device) can determine the first information and send it to the first device; then, the first device generates a first signal based on the received first information, and generates a backscatter modulated signal based on the first signal and the radio frequency carrier signal, and sends the backscatter modulated signal to the third device (i.e., the second device). Optionally, the backscatter modulated signal can undergo necessary signal processing such as inserting a synchronization sequence and inserting a pilot. This typical architecture includes base station-user equipment (UE) communication mode, UE-UE communication mode without network control in sidelink, AP STA-STA mode or STA-STA (i.e., WiFi direct connection mode) in Wi-Fi, communication mode in Bluetooth / Zigbee, etc., where AP stands for access point and STA stands for station. That is, one device in communication (here taking the second device as an example) has the ability to determine the first information and sends the first information to the first device.

[0222] In another network deployment architecture, in addition to the first device and the third device directly participating in the communication, the fourth device can act as a network scheduling device to determine and configure the first information. According to the way of configuring or indicating the first information, it can be divided into the following sub-modes:

[0223] In sub-mode 1, as shown in FIG4B , the fourth device configures or instructs the first device to transmit first information. The first device generates a first signal and a backscatter modulated signal based on the first information, and transmits the backscatter modulated signal to the third device. In this case, the device transmitting the RF carrier signal to the first device can be either the third device or the second device (a dedicated RF carrier device), which is not limited in this case.

[0224] In sub-mode 2, as shown in Figure 4C, the fourth device first configures and indicates the first information to the third device, and then the third device indicates the first information to the first device. This scenario is similar to the scenario with a master UE and a slave UE in a sidelink, where the base station configures or indicates the first information to the master UE, and then the master UE configures or indicates the first information to the slave UE.

[0225] In sub-mode 3, as shown in FIG4D , the fourth device and the third device simultaneously configure or indicate the first information to the first device, such as the fourth device configures or indicates the first information to the third device, and then the fourth device configures or indicates part of the content in the first information, and the third device configures or indicates part of the content in the first information, and the two together constitute the complete first information. In another possible solution, the fourth device may first configure a group of first information in the first device through Radio Resource Control (RRC) signaling, and the third device activates one of the first information through Medium Access Control-Control Element (MAC-CE), DCI, SCI, L1 signaling, etc. Another possible solution is that the fourth device configures or indicates part of the content in the first information, and the third device configures or indicates part of the content in the first information, and the two together constitute the complete first information.

[0226] It is worth noting that for the three network deployment architectures mentioned above, if the device that provides the RF carrier signal to the first device is the second device, in the case of a single base, the second device is also the fifth device. In another possible solution, if the third device is only a receiving device for the backscatter modulated signal, then the above-mentioned network deployment architectures also include a second device that provides the RF carrier signal to the first device, and the second device is also subject to the network scheduling of the fourth device. In the above solution, the fourth device can configure or indicate the third information to the second device so that it generates and sends the RF carrier signal to the first device, or the fourth device can configure or indicate the fourth information to the third device so that it generates and sends the RF carrier signal to the first device. The third information and the fourth information are signal parameters related to the RF carrier signal, including at least one of the following:

[0227] (a) Waveform of RF carrier signal;

[0228] (b) the transmission power of the radio frequency carrier signal;

[0229] (c) The bandwidth and center frequency of the RF carrier signal;

[0230] (d) Duration and period of the RF carrier signal.

[0231] Example 4

[0232] This embodiment 4 provides a signaling configuration process applicable to this solution. Taking Figure 5 as an example, the device that configures or indicates the first information, the third information (or the fourth information) at this time is the fourth device, and at this time the fourth device is not the same device as the first device, the second device, and the third device, that is, a device with a network scheduling function. After the first device completes the generation of the first signal and the backscattered modulated signal, and the fourth device configures or indicates the first information, the first device, the third device, and the fourth device need to complete the signaling interaction process of capability reporting first. Optionally, the second device also needs to complete the signaling interaction process of capability reporting with the fourth device.

[0233] The specific interaction process (corresponding to the network deployment architecture shown in Figure 4B) includes: the fourth device configures the parameters of the RF carrier signal for the second device through the third information based on the acquired second information (such as capability information and other information), and configures the parameters of the RF carrier signal for the third device through the fourth information; the second device generates the RF carrier signal based on the third information or the third device generates the RF carrier signal based on the fourth information and sends it to the first device. Furthermore, the fourth device determines the signal parameters of the first signal and the RF carrier signal based on the acquired second information, and indicates the parameters of the first signal and the RF carrier signal to the first device through the first information. The first device generates the first signal based on the acquired first information, and generates a backscattered modulated signal by multiplying the first signal with the RF carrier signal, or by multiplying the reflection coefficient controlled by the first signal with the RF carrier signal; and sends the backscattered modulated signal to the third device.

[0234] It is worth noting that the other network deployment architectures in Example 3 of this solution can be improved based on the signaling process in Figure 5, such as the integration of device functions (such as the integration of the fifth device and the third device), or the configuration or indication subject of the first information comes from multiple devices; or, the fourth device and the third device respectively configure multiple stages of the first information, that is, the fourth device first configures a first information set, and the third device activates one of the information; or, the fourth device configures or indicates the first information of the first device through the third device. These extended scenarios and signaling processes are all within the protection scope of the solution in this application. Personnel in related fields can make corresponding extensions based on the examples of this application. These all belong to the solutions to be protected by this application.

[0235] The information sending method provided in the embodiment of the present application can be executed by an information sending device. In the embodiment of the present application, the information sending device provided in the embodiment of the present application is described by taking the information sending method executed by the information sending device as an example.

[0236] Please refer to Figure 6, which is a schematic diagram of the structure of an information sending device provided in an embodiment of the present application. The device is applied to a first device, such as a backscatter communication device with a certain carrier generation capability. As shown in Figure 6, the information sending device 60 includes:

[0237] An acquisition module 61 is configured to acquire first information;

[0238] The execution module 62 is used to determine or execute a first behavior based on the first information; wherein the first behavior includes: generating a first signal, generating a backscattered modulated signal based on the first signal and the received radio frequency carrier signal, and sending the backscattered modulated signal.

[0239] Optionally, the first information includes at least one of the following:

[0240] parameter information of the first signal;

[0241] Frequency or bandwidth related information of the backscattered modulated signal;

[0242] signal transmission parameters of the backscatter modulated signal;

[0243] signal transmission parameters of the radio frequency carrier signal.

[0244] Optionally, the parameter information of the first signal includes at least one of the following:

[0245] The center frequency of the first signal;

[0246] a signal bandwidth of the first signal;

[0247] a waveform type of the first signal;

[0248] the amplitude or power of the first signal;

[0249] a maximum frequency error allowed for the first signal;

[0250] Time domain related information of the first signal, such as signal period, signal length, etc.;

[0251] The first signal type identification, wherein each type of the first signal is associated with at least one signal parameter.

[0252] Optionally, the frequency or bandwidth-related information of the backscattered modulated signal includes at least one of the following:

[0253] The signal bandwidth of the backscattered modulated signal;

[0254] The center frequency of the backscattered modulation signal;

[0255] The lowest frequency point and signal bandwidth of the backscattered modulation signal;

[0256] The highest frequency point and signal bandwidth of the backscattered modulation signal;

[0257] The lowest frequency point and the highest frequency point of the backscattered modulation signal;

[0258] an indication of the signal bandwidth and upper and lower sidebands of the backscatter modulated signal;

[0259] An indication of the frequency of the backscattered modulated signal, where the frequency may be pre-configured by the network or system;

[0260] Alternatively, the signal transmission parameter of the backscatter modulated signal includes at least one of the following:

[0261] A modulation mode of the backscatter modulation signal;

[0262] The modulation order or modulation level of the backscatter modulation signal;

[0263] the modulation rate or link frequency of the backscatter modulated signal;

[0264] The time domain resources of the backscatter modulated signal, such as signal period, signal length, etc.;

[0265] The signal power or reflection coefficient of the backscattered modulated signal;

[0266] The coding method of the backscatter modulation signal, such as line coding, channel coding, etc.;

[0267] The signal waveform of the backscattered modulated signal;

[0268] A synchronization sequence corresponding to the backscatter device identifier;

[0269] A reference signal for the backscattered modulated signal.

[0270] Optionally, the signal transmission parameter of the radio frequency carrier signal includes at least one of the following:

[0271] The signal waveform of the radio frequency carrier signal;

[0272] The transmission power of the radio frequency carrier signal;

[0273] Time domain resource information of the radio frequency carrier signal;

[0274] Frequency domain resource information of the radio frequency carrier signal;

[0275] The synchronization sequence or preamble code of the radio frequency carrier signal.

[0276] Optionally, the execution module 62 is specifically configured to execute at least one of the following:

[0277] Multiplying the first signal by the radio frequency carrier signal in the time domain to obtain the backscattered modulated signal;

[0278] Multiplying the first signal by the radio frequency carrier signal in the time domain, and processing the obtained signal through a bandwidth filter to obtain the backscattered modulated signal;

[0279] Using the first signal as an input signal for controlling load impedance and multiplying it with the radio frequency carrier signal to obtain the backscattered modulated signal;

[0280] A second signal is generated according to the first signal and the received radio frequency carrier signal, and signal processing is performed on the second signal to obtain the backscattered modulated signal.

[0281] Optionally, the first device is any one of the following:

[0282] Devices that perform backscatter modulation based on load modulation;

[0283] transistor-based devices for backscatter modulation;

[0284] Devices based on intermediate frequency orthogonal backscatter modulation, or devices capable of generating intermediate frequency carriers;

[0285] A device that does not have the ability to generate a radio frequency carrier and performs backscatter modulation based on the received radio frequency carrier signal.

[0286] Optionally, the acquisition module 61 is specifically configured to perform at least one of the following:

[0287] determining the first information;

[0288] receiving the first information from a second device, where the second device is a device that provides the radio frequency carrier signal;

[0289] receiving the first information from a third device, where the third device is a receiving device of the backscatter modulated signal;

[0290] The first information is received from a fourth device, where the fourth device is a device having a network scheduling function.

[0291] Optionally, the first information is determined according to at least one of the following:

[0292] capability information of the first device;

[0293] capability information of the second device;

[0294] capability information of the third device;

[0295] channel state information, signal quality information, or communication statistics between the first device and the third device;

[0296] device status information of the first device;

[0297] device status information of the third device;

[0298] request information of the first device;

[0299] Data type information or business service quality information: The above data type information or business service quality information may come from the application layer or the protocol upper layer.

[0300] The information sending device 60 provided in the embodiment of the present application can implement each process implemented in the method embodiment of Figure 2 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0301] Please refer to FIG. 7 , which is a schematic diagram of the structure of an information configuration device provided in an embodiment of the present application. The device is applied to the fifth device. As shown in FIG. 7 , the information configuration device 70 includes:

[0302] The sending module 71 is used to send first information to the first device; wherein the first information is used to determine or execute a first behavior, and the first behavior includes: generating a first signal, generating a backscattered modulated signal based on the first signal and the radio frequency carrier signal, and sending the backscattered modulated signal.

[0303] Optionally, the first information includes at least one of the following:

[0304] parameter information of the first signal;

[0305] Frequency or bandwidth related information of the backscattered modulated signal;

[0306] signal transmission parameters of the backscatter modulated signal;

[0307] signal transmission parameters of the radio frequency carrier signal.

[0308] Optionally, the parameter information of the first signal includes at least one of the following:

[0309] The center frequency of the first signal;

[0310] a signal bandwidth of the first signal;

[0311] a waveform type of the first signal;

[0312] the amplitude or power of the first signal;

[0313] a maximum frequency error allowed for the first signal;

[0314] Time domain related information of the first signal, such as signal period, signal length, etc.;

[0315] The first signal type identification, wherein each type of the first signal is associated with at least one signal parameter.

[0316] Optionally, the frequency or bandwidth-related information of the backscattered modulated signal includes at least one of the following:

[0317] The signal bandwidth of the backscattered modulated signal;

[0318] The center frequency of the backscattered modulation signal;

[0319] The lowest frequency point and signal bandwidth of the backscattered modulation signal;

[0320] The highest frequency point and signal bandwidth of the backscattered modulation signal;

[0321] The lowest frequency point and the highest frequency point of the backscattered modulation signal;

[0322] an indication of the signal bandwidth and upper and lower sidebands of the backscatter modulated signal;

[0323] An indication of the frequency of the backscattered modulated signal, where the frequency may be pre-configured by the network or system;

[0324] Alternatively, the signal transmission parameter of the backscatter modulated signal includes at least one of the following:

[0325] A modulation mode of the backscatter modulation signal;

[0326] The modulation order or modulation level of the backscatter modulation signal;

[0327] the modulation rate or link frequency of the backscatter modulated signal;

[0328] The time domain resources of the backscatter modulated signal, such as signal period, signal length, etc.;

[0329] The signal power or reflection coefficient of the backscattered modulated signal;

[0330] The coding method of the backscatter modulation signal, such as line coding, channel coding, etc.;

[0331] The signal waveform of the backscattered modulated signal;

[0332] A synchronization sequence corresponding to the backscatter device identifier;

[0333] A reference signal for the backscattered modulated signal.

[0334] Optionally, the signal transmission parameter of the radio frequency carrier signal includes at least one of the following:

[0335] The signal waveform of the radio frequency carrier signal;

[0336] The transmission power of the radio frequency carrier signal;

[0337] Time domain resource information of the radio frequency carrier signal;

[0338] Frequency domain resource information of the radio frequency carrier signal;

[0339] The synchronization sequence or preamble code of the radio frequency carrier signal.

[0340] Optionally, the information configuration device 70 further includes:

[0341] A determination module is configured to determine the first information based on second information, wherein the second information includes at least one of the following:

[0342] capability information of the first device;

[0343] capability information of a second device providing the radio frequency carrier signal;

[0344] capability information of a third device that receives the backscatter modulated signal;

[0345] channel state information, signal quality information, or communication statistics between the first device and the third device;

[0346] device status information of the first device;

[0347] device status information of the third device;

[0348] request information of the first device;

[0349] Data type information or business service quality information.

[0350] Optionally, the fifth device is any one of the following:

[0351] a second device providing the radio frequency carrier signal;

[0352] a third device receiving the backscatter modulated signal;

[0353] A fourth device having a network scheduling function.

[0354] The information configuration device 70 provided in the embodiment of the present application can implement each process implemented in the method embodiment of Figure 3 and achieve the same technical effect. To avoid repetition, it will not be described here.

[0355] As shown in Figure 8, an embodiment of the present application also provides a communication device 80, including a processor 81 and a memory 82, and the memory 82 stores a program or instruction that can be run on the processor 81. When the program or instruction is executed by the processor 81, it implements the various steps of the above-mentioned information sending method embodiment, or implements the various steps of the above-mentioned information configuration method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0356] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned information sending method embodiment or the various steps of the above-mentioned information configuration method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0357] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0358] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned information sending method embodiment, or to implement the various steps of the above-mentioned information configuration method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0359] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0360] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned information sending method embodiment, or to implement the various steps of the above-mentioned information configuration method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0361] An embodiment of the present application also provides a communication system, including: a first device and a fifth device, wherein the first device can be used to execute the steps of the information sending method as described above, and the fifth device can be used to execute the steps of the information configuration method as described above; the fifth device can be any one of the following: a second device that provides a radio frequency carrier signal; a third device that receives a backscattered modulated signal; a fourth device having a network scheduling function.

[0362] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0363] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0364] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A method for sending information, comprising: The first device acquires first information; The first device determines or executes a first behavior based on the first information; wherein the first behavior includes: generating a first signal, generating a backscatter modulated signal based on the first signal and a received radio frequency carrier signal, and sending the backscatter modulated signal.

2. The method according to claim 1, wherein: The first information includes at least one of the following: parameter information of the first signal; Frequency or bandwidth related information of the backscattered modulated signal; signal transmission parameters of the backscatter modulated signal; signal transmission parameters of the radio frequency carrier signal.

3. The method according to claim 2, wherein: The parameter information of the first signal includes at least one of the following: The center frequency of the first signal; a signal bandwidth of the first signal; a waveform type of the first signal; the amplitude or power of the first signal; a maximum frequency error allowed for the first signal; time domain related information of the first signal; The first signal has a type identifier, wherein each type of the first signal is associated with at least one signal parameter.

4. The method according to claim 2, wherein: The frequency or bandwidth related information of the backscattered modulated signal includes at least one of the following: The signal bandwidth of the backscatter modulated signal; The center frequency of the backscattered modulation signal; The lowest frequency point and signal bandwidth of the backscattered modulation signal; The highest frequency point and signal bandwidth of the backscattered modulation signal; The lowest frequency point and the highest frequency point of the backscattered modulation signal; an indication of the signal bandwidth and upper and lower sidebands of the backscatter modulated signal; A frequency indication of the backscattered modulation signal; or, The signal transmission parameter of the backscatter modulated signal includes at least one of the following: A modulation method of the backscatter modulation signal; The modulation order or modulation level of the backscatter modulation signal; a modulation rate or link frequency of the backscatter modulated signal; The time domain resource of the backscatter modulated signal; The signal power or reflection coefficient of the backscattered modulated signal; The encoding method of the backscatter modulation signal; A signal waveform of the backscattered modulated signal; a synchronization sequence corresponding to the backscatter device identification; A reference signal for the backscattered modulated signal.

5. The method according to claim 2, wherein: The signal transmission parameter of the radio frequency carrier signal includes at least one of the following: The signal waveform of the radio frequency carrier signal; The transmission power of the radio frequency carrier signal; Time domain resource information of the radio frequency carrier signal; Frequency domain resource information of the radio frequency carrier signal; The synchronization sequence or preamble code of the radio frequency carrier signal.

6. The method according to any one of claims 1 to 5, wherein: Generating a backscatter modulated signal according to the first signal and the received radio frequency carrier signal includes at least one of the following: The first device multiplies the first signal by the radio frequency carrier signal in the time domain to obtain the backscattered modulated signal; The first device multiplies the first signal by the radio frequency carrier signal in the time domain, and processes the obtained signal through a bandwidth filter to obtain the backscattered modulated signal; The first device uses the first signal as an input signal for controlling load impedance, and multiplies it with the radio frequency carrier signal to obtain the backscattered modulated signal; The first device generates a second signal according to the first signal and the received radio frequency carrier signal, and performs signal processing on the second signal to obtain the backscattered modulated signal.

7. The method according to any one of claims 1 to 6, wherein: The first device is any one of the following: Devices for backscatter modulation based on load modulation; Transistor-based devices for backscatter modulation; Equipment based on intermediate frequency orthogonal backscatter modulation, or equipment with the ability to generate intermediate frequency carriers; A device that does not have the ability to generate an RF carrier and performs backscatter modulation based on the received RF carrier signal.

8. The method according to any one of claims 1 to 7, wherein: The obtaining of the first information includes at least one of the following: The first device determines the first information; The first device receives the first information from a second device, where the second device is a device that provides the radio frequency carrier signal; The first device receives the first information from a third device, where the third device is a receiving device of the backscatter modulated signal; The first device receives the first information from a fourth device, and the fourth device is a device with a network scheduling function.

9. The method according to claim 8, wherein: The first information is determined according to at least one of the following: capability information of the first device; capability information of the second device; capability information of the third device; channel state information, signal quality information or communication statistics information between the first device and the third device; device status information of the first device; device status information of the third device; request information of the first device; Data type information or business service quality information.

10. An information configuration method, comprising: The fifth device sends first information to the first device; wherein the first information is used to determine or execute a first behavior, and the first behavior includes: generating a first signal, generating a backscatter modulated signal based on the first signal and a radio frequency carrier signal, and sending the backscatter modulated signal.

11. The method according to claim 10, wherein: The first information includes at least one of the following: parameter information of the first signal; Frequency or bandwidth related information of the backscattered modulated signal; signal transmission parameters of the backscatter modulated signal; signal transmission parameters of the radio frequency carrier signal.

12. The method according to claim 11, wherein: The parameter information of the first signal includes at least one of the following: The center frequency of the first signal; a signal bandwidth of the first signal; a waveform type of the first signal; the amplitude or power of the first signal; a maximum frequency error allowed for the first signal; time domain related information of the first signal; The first signal has a type identifier, wherein each type of the first signal is associated with at least one signal parameter.

13. The method according to claim 11, wherein: The frequency or bandwidth related information of the backscattered modulated signal includes at least one of the following: The signal bandwidth of the backscatter modulated signal; The center frequency of the backscattered modulation signal; The lowest frequency point and signal bandwidth of the backscattered modulation signal; The highest frequency point and signal bandwidth of the backscattered modulation signal; The lowest frequency point and the highest frequency point of the backscattered modulation signal; an indication of the signal bandwidth and upper and lower sidebands of the backscatter modulated signal; A frequency indication of the backscattered modulation signal; or, The signal transmission parameter of the backscatter modulated signal includes at least one of the following: A modulation method of the backscatter modulation signal; The modulation order or modulation level of the backscatter modulation signal; a modulation rate or link frequency of the backscatter modulated signal; The time domain resource of the backscatter modulated signal; The signal power or reflection coefficient of the backscattered modulated signal; The encoding method of the backscatter modulation signal; A signal waveform of the backscattered modulated signal; a synchronization sequence corresponding to the backscatter device identification; A reference signal for the backscattered modulated signal.

14. The method according to claim 11, wherein: The signal transmission parameter of the radio frequency carrier signal includes at least one of the following: The signal waveform of the radio frequency carrier signal; The transmission power of the radio frequency carrier signal; Time domain resource information of the radio frequency carrier signal; Frequency domain resource information of the radio frequency carrier signal; The synchronization sequence or preamble code of the radio frequency carrier signal.

15. The method according to any one of claims 10 to 14, further comprising: The fifth device determines the first information according to the second information; The second information includes at least one of the following: capability information of the first device; capability information of a second device providing the radio frequency carrier signal; capability information of a third device receiving the backscatter modulated signal; channel state information, signal quality information or communication statistics information between the first device and the third device; device status information of the first device; device status information of the third device; request information of the first device; Data type information or business service quality information.

16. The method according to any one of claims 10 to 15, wherein: The fifth device is any one of the following: a second device providing the radio frequency carrier signal; a third device receiving the backscatter modulated signal; A fourth device having a network scheduling function.

17. An information sending device, comprising: An acquisition module, used for acquiring first information; An execution module is used to determine or execute a first behavior based on the first information; wherein the first behavior includes: generating a first signal, generating a backscatter modulated signal based on the first signal and a received radio frequency carrier signal, and sending the backscatter modulated signal.

18. The device according to claim 17, wherein: The execution module is further configured to execute at least one of the following: Multiplying the first signal by the radio frequency carrier signal in the time domain to obtain the backscattered modulated signal; Multiplying the first signal by the radio frequency carrier signal in the time domain, and processing the obtained signal through a bandwidth filter to obtain the backscattered modulated signal; Using the first signal as an input signal for controlling load impedance and multiplying it with the radio frequency carrier signal to obtain the backscattering modulation signal; A second signal is generated according to the first signal and the received radio frequency carrier signal, and signal processing is performed on the second signal to obtain the backscattered modulated signal.

19. The device according to claim 17, wherein: The acquisition module is further configured to perform at least one of the following: determining the first information; receiving the first information from a second device, where the second device is a device that provides the radio frequency carrier signal; receiving the first information from a third device, the third device being a receiving device of the backscatter modulated signal; The first information is received from a fourth device, where the fourth device is a device having a network scheduling function.

20. An information configuration device, comprising: A sending module is used to send first information to a first device; wherein the first information is used to determine or execute a first behavior, and the first behavior includes: generating a first signal, generating a backscatter modulated signal based on the first signal and a radio frequency carrier signal, and sending the backscatter modulated signal.

21. The apparatus according to claim 20, further comprising: A determination module, configured to determine the first information according to the second information; The second information includes at least one of the following: capability information of the first device; capability information of a second device providing the radio frequency carrier signal; capability information of a third device receiving the backscatter modulated signal; channel state information, signal quality information or communication statistics information between the first device and the third device; device status information of the first device; device status information of the third device; request information of the first device; Data type information or business service quality information.

22. A communication device, comprising a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the information sending method as described in any one of claims 1 to 9 are implemented, or the steps of the information configuration method as described in any one of claims 10 to 16 are implemented.

23. A readable storage medium storing a program or instruction, wherein the program or instruction, when executed by a processor, implements the steps of the information sending method as described in any one of claims 1 to 9, or implements the steps of the information configuration method as described in any one of claims 10 to 16.

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