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

Abstract

The invention discloses an information sending method, a configuration method, devices and communication equipment, and belongs to the technical field of communication, and the information sending method comprises the steps that first equipment obtains first information; determining or executing a first behavior according to the first information; the first behavior comprises the steps of generating a first signal, generating a backscatter modulation signal according to the first signal and a received radio frequency carrier signal, and sending the backscatter modulation signal.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to a method and apparatus for information transmission, a configuration method, and a communication device. Background Art

[0002] In related technologies, a backscatter modulator usually only modulates using a radio frequency carrier signal transmitted by a third-party device (such as a reader device). Therefore, most backscatter modulations can only achieve double-sideband modulation of time-domain multiplication or directly modulate a baseband signal with a radio frequency carrier signal, resulting in waste of power and bandwidth and being unable to meet different communication performance and power consumption requirements. In this case, how to effectively implement low-power and high-spectrum-efficiency backscatter modulation to meet different communication performance and power consumption requirements is an urgent problem to be solved currently. Summary of the Invention

[0003] Embodiments of this application provide a method and apparatus for information transmission, a configuration method, and a communication device, which can solve the problem of how to effectively implement low-power and high-spectrum-efficiency backscatter modulation.

[0004] In a first aspect, there is provided a method for information transmission, which is executed by a first device. The method includes:

[0005] The first device obtains first information;

[0006] The first device determines or executes a first behavior according to the first information; where the first behavior includes: generating a first signal, generating a backscatter modulation signal according to the first signal and a received radio frequency carrier signal, and transmitting the backscatter modulation signal.

[0007] In a second aspect, there is provided a method for information configuration, which is executed by a fifth device. The method includes:

[0008] The fifth device sends first information to the first device; where the first information is used to determine or execute a first behavior, and the first behavior includes: generating a first signal, generating a backscatter modulation signal according to the first signal and a radio frequency carrier signal, and transmitting the backscatter modulation signal.

[0009] In a third aspect, there is provided an apparatus for information transmission, which is applied to the first device and includes:

[0010] An obtaining module, configured to obtain first information;

[0011] An execution module, configured to determine or execute a first behavior according to the first information; where the first behavior includes: generating a first signal, generating a backscatter modulation signal according to the first signal and a received radio frequency carrier signal, and transmitting the backscatter modulation signal.

[0012] In a fourth aspect, an information configuration device is provided, which is applied to a fifth device and includes:

[0013] A sending module, configured 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 modulation signal according to the first signal and a radio frequency carrier signal, and sending the backscatter modulation signal.

[0014] In a fifth aspect, a communication device is provided, which includes a processor and a memory. The memory stores a program or instructions that can run on the processor. 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.

[0015] In a sixth aspect, a communication device is provided, which includes a processor and a communication interface. For example, when the communication device is the first device, the processor is configured to obtain first information and determine or execute a first behavior according to the first information; or when the communication device is the fifth device, the communication interface is configured 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 backscatter modulation signal according to the first signal and a radio frequency carrier signal, and sending the backscatter modulation signal.

[0016] In a seventh aspect, a readable storage medium is provided. A program or instructions are stored on the readable storage medium. When the program or instructions are 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.

[0017] In an eighth aspect, a wireless communication system is provided, which includes at least one of a first device and a fifth device. 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.

[0018] In a ninth aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to run a program or instructions to implement the steps of the method described in the first aspect, or the steps of the method described in the second aspect.

[0019] In a tenth aspect, a computer program / program product is provided. The computer program / program product is stored in a storage medium. The program / program product is executed by at least one processor to implement the steps of the method described in the first aspect, or the steps of the method described in the second aspect.

[0020] Through the solution in the embodiments of the present application, the first device (i.e., the backscatter device) can obtain the first information, and determine or execute the first action according to the first information; the first action includes: generating a first signal, generating a backscatter modulation signal according to the first signal and the received radio frequency carrier signal, and sending the backscatter modulation signal. Thus, by reasonably configuring or indicating the first information, the first device (i.e., the backscatter device) can achieve diverse backscatter modulation according to the first signal (such as intermediate frequency signal / square wave signal, etc.) generated by itself, so as to effectively achieve low-power and high-spectrum-efficiency backscatter modulation to meet different communication performance (such as communication rate, communication distance, etc.) and power consumption requirements. Description of the Drawings

[0021] Figure 1A is a schematic structural diagram of the backscatter communication device in the embodiments of the present application;

[0022] Figure 1B is a schematic diagram of the backscatter communication modulation process in the embodiments of the present application;

[0023] Figure 1C is a schematic diagram of the intermediate frequency quadrature backscatter modulation process in the embodiments of the present application;

[0024] Figure 1D is a schematic diagram of the single-sideband backscatter modulation process in the embodiments of the present application;

[0025] Figure 2 is a flowchart of a method for sending information provided by the embodiments of the present application;

[0026] Figure 3 is a flowchart of a method for configuring information provided by the embodiments of the present application;

[0027] Figure 4A 、 Figure 4B 、 Figure 4C and Figure 4D is a schematic diagram of the network deployment architecture in Embodiment 3 of the present application;

[0028] Figure 5 is a schematic diagram of the signaling configuration process in Embodiment 4 of the present application;

[0029] Figure 6 is a schematic structural diagram of a device for sending information provided by the embodiments of the present application;

[0030] Figure 7 is a schematic structural diagram of a device for configuring information provided by the embodiments of the present application;

[0031] Figure 8 is a schematic structural diagram of a communication device provided by the embodiments of the present application. Detailed Implementation Manner

[0032] The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0033] The terms "first", "second", etc. in the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances 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 usually of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "or" in the present application means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally indicates an "or" relationship between the associated objects before and after.

[0034] It is worth pointing out 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, and 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 not only in the systems and radio technologies mentioned above, but also in other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes, and the NR term is used in most of the following descriptions, but these technologies can also be applied to systems other than the NR system, such as the 6th Generation (6G) communication system.

[0035] To facilitate the understanding of the embodiments of the present application, the following content is first described.

[0036] Backscatter Communication (BSC) refers to a backscatter communication device that uses radio frequency signals in other devices or the environment for signal modulation to transmit its own information, and it is a relatively typical passive Internet of Things device. As Figure 1A shown, the basic constituent modules and main functions of the backscatter communication transmitter include:

[0037] - Antenna unit: used to receive radio frequency signals and control commands, and at the same time used to transmit modulated backscatter signals.

[0038] - Energy harvesting module or power supply module: This module is used for the backscatter communication device to perform radio frequency energy harvesting, or other energy harvesting, including but not limited to solar energy, kinetic energy, mechanical energy, thermal energy, etc. In addition to including an energy harvesting module, it may also include a battery power supply module. In this case, the backscatter communication device is a semi-passive device. The energy harvesting module or power supply module powers all other modules in the device.

[0039] - Microcontroller: includes controlling baseband signal processing, energy storage or data scheduling status, switch switching, system synchronization, etc.

[0040] - Signal receiving module: used to demodulate control commands or data sent by the backscatter communication receiver or other network nodes.

[0041] - Coding and modulation module: performs channel coding and signal modulation under the control of the controller, and realizes modulation by selecting different load impedances through a selection switch under the control of the controller.

[0042] - Memory or sensing module: used to store the identification ID information, location information or sensing data of the device.

[0043] In addition to the above typical constituent modules, the future backscatter communication transmitter can also integrate a tunnel diode amplifier module, a low noise amplifier module, etc., to improve the receiving sensitivity and transmission power of the transmitter.

[0044] Optionally, the basic constituent modules and main functions of the backscatter communication receiver include:

[0045] - Antenna unit: used to receive modulated backscatter signals.

[0046] - Backscatter signal detection module: used to detect the backscatter signals sent by the backscatter communication transmitter, including but not limited to ASK detection, PSK detection, FSK detection or QAM detection, etc.

[0047] - Demodulation and decoding module: Demodulates and decodes the detected signal to recover the original information stream.

[0048] The backscatter communication device 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. Among them, the modulation circuit can be as Figure 1B shown, and the reflection coefficient Γ can be characterized as:

[0049]

[0050] where, Z 0 is the antenna characteristic impedance; Z 1 is the load impedance; j represents a complex number, and θ T represents the phase. Assuming the incident signal is expressed as S in (t), then the output signal is Therefore, corresponding amplitude modulation, frequency modulation or phase modulation can be achieved by reasonably controlling the reflection coefficient. Based on this, the backscatter communication device can be a Tag in traditional Radio Frequency Identification (RFID), or a passive or semi-passive Internet of Things (IoT) device. Here, the backscatter communication device can be collectively referred to as a BSC device.

[0051] Traditional backscatter communication changes the load impedance, and corresponding amplitude modulation, frequency modulation or phase modulation can be achieved by reasonably controlling the reflection coefficient. The method of realizing backscatter communication by switching the load impedance is also called load modulation-based backscatter communication. The advantage of this method is simple implementation and low power at low-order modulation, so load modulation-based backscatter communication is mostly used in communication systems with relatively low communication data rates or low modulation orders.

[0052] With the increasing demand for backscatter communication data rates in some scenarios, the communication rate of the backscatter communication system can be improved by high-order modulation. In a possible high-order modulation structure, different reflection coefficient load impedances are realized by changing the bias voltage of solid-state devices (such as diodes / transistors), thereby realizing backscatter communication modulation.

[0053] In addition to the modulation structure of transistors and power dividers, high electron mobility transistor (HEMT) devices based on silicon or germanium can also be used in backscatter communication systems to realize adjustable load impedance, that is, to realize load modulation-based backscatter communication.

[0054] To further reduce the power consumption of backscatter communication devices 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 devices during high - order modulation or high - rate transmission. Different from traditional backscatter modulation terminals based on load impedance that fully utilize third - party radio - frequency carrier signals for modulation, the Intermediate Frequency Quadrature Modulation IFQB has the ability to generate intermediate - frequency signals autonomously. 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 this intermediate - frequency local oscillator signal; then, the obtained modulated signal must be up - converted to the carrier frequency. In the IFQBM modulator, using the radio - frequency (RF) carrier signal sent by a third - party device (such as a Reader) as the local oscillator source for up - conversion can reduce the power - consumption overhead. As Figure 1C shown, the IFQBM modulator uses an IF - modulated signal (such as Figure 1C the intermediate - frequency local oscillator signal f IF in Figure 1C and its superposition of the base - band in - phase component I and the base - band quadrature component Q), rather than using the base - band data signal (such as data f in Figure 1C ) and uses the RF carrier signal from a third - party device (such as RF f in IF ) to up - convert the intermediate - frequency IF - modulated signal f

[0055] IF ssb to the carrier frequency. Therefore, the IFQBM modulator can complete the quadrature - modulated signal at the intermediate frequency without using an active carrier - generation circuit, thus avoiding the large power - consumption overhead brought by RF devices and achieving high - order modulation with high spectral efficiency while maintaining low power consumption.

[0056]

[0057] Among them, x(t) represents the modulated baseband signal, is the Hilbert transform of x(t), and f c represents the carrier frequency of the signal, represents the value of the upper and lower sidebands. The Hilbert transform can be regarded as a linear filter, whose purpose is to shift the incident signal by -90° in the positive frequency band and 90° in the negative frequency band, and can be regarded as a delay of the signal within a quarter cycle.

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

[0059]

[0060] Among them, s(t) is the control signal of the load impedance, that is, the baseband signal to be modulated, generally a square wave signal, is the Hilbert transform of the signal s(t), then is the instantaneous reflection coefficient when controlled by the signal , and cos(2πf CW t) represents the radio frequency carrier signal.

[0061] It can be seen from the expression of the backscatter modulation signal that it is very similar to the single-sideband modulation signal x ssb (t). Only by effectively setting the instantaneous reflection coefficient can a single-sideband backscatter modulation (SSBBackscatter Modulation, SSB-BSM) signal be generated, and the real part and imaginary part of its 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 , then the mapping relationship between the instantaneous reflection coefficient and the control signal s(t) and is as follows:

[0062]

[0063] Among them, |Γ 0 | = |Γ 1 | = |Γ 2 | = |Γ 3 |, and the phases corresponding to the four reflection coefficients are evenly spaced on the Smith chart. If the reflection coefficient is written in the form of the sum of the real part and the imaginary part, that is, Ae jφ = Γ I + jΓQ , the backscatter modulation signal can be expressed as:

[0064]

[0065] Based on this, a single-sideband modulation signal can be obtained. According to the same principle, by changing the "-" in the backscatter signal to a "+" operation, a single-sideband modulation signal of the other sideband can be obtained.

[0066] 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, LoRa systems, Zigbee systems, wireless optical communication systems, low-power communication systems, backscatter communication systems, etc.

[0067] Next, in combination with the accompanying drawings, through some embodiments and their application scenarios, the information sending method, configuration method, device, and communication device provided by the embodiments of this application will be described in detail.

[0068] Please refer to Figure 2 , Figure 2 which is a flowchart of an information sending method provided by an embodiment of this application. This method is executed by a first device, and the first device is, for example, a backscatter communication device with a certain carrier generation ability. As Figure 2 shown, this method includes the following steps:

[0069] Step 21: The first device obtains first information;

[0070] Step 22: The first device determines or executes a first behavior according to the first information; the first behavior includes: generating a first signal, generating a backscatter modulation signal according to the first signal and the received radio frequency carrier signal, and sending the backscatter modulation signal.

[0071] In the embodiments of this application, the first signal is not a baseband data signal, and can be understood as a carrier signal independently generated by the first device, which is used to complete backscatter modulation together with the received radio frequency carrier signal. For example, the first signal can be a sine wave intermediate frequency signal to implement intermediate frequency quadrature backscatter modulation (IFQBM), so as to effectively implement low-power backscatter high-order modulation; or, the first signal can also be a square wave control signal to implement single-sideband backscatter modulation (SSB-BSM), so as to improve the power efficiency and bandwidth efficiency of the backscatter communication device.

[0072] The above determination of the first action can be understood as follows: After the first device obtains the first information, it determines to generate a first signal (such as a sine wave intermediate frequency signal or a square wave control signal) based on the first information, rather than a baseband data signal, and determines to generate a backscatter modulation signal based on the generated first signal and the received radio frequency carrier signal and send it. The above execution of the first action can be understood as follows: After the first device obtains the first information, it directly generates a first signal (such as a sine wave intermediate frequency signal or a square wave control signal) based on the first information, rather than a baseband data signal, and generates a backscatter modulation signal based on the generated first signal and the received radio frequency carrier signal and send it.

[0073] Optionally, the first information may be determined by the first device, or may be configured or indicated by other devices.

[0074] For example, the first device may receive the radio frequency carrier signal from the second device, and the second device is a device that provides the radio frequency carrier signal, such as a radio frequency carrier source device, etc.

[0075] For example, the first device may send the backscatter modulation signal to the third device, and the third device is a receiving device for the backscatter modulation signal.

[0076] Thus, by reasonably configuring or indicating the first information, the first device (i.e., the backscatter device) can achieve diverse backscatter modulation according to the indicated information by the independently generated first signal (such as a sine wave intermediate frequency signal / square wave control signal, etc.), so as to effectively achieve low-power and high-spectrum-efficiency backscatter modulation to meet different communication performances (such as communication rate, communication distance, etc.) and power consumption requirements.

[0077] Optionally, the first information includes but is not limited to at least one of the following:

[0078] Parameter information of the first signal; Based on this parameter information, the first device can generate a corresponding first signal, and then different backscatter modulation methods can be realized to meet different communication performances (such as communication rate, communication distance, etc.) and power consumption requirements;

[0079] Frequency or bandwidth related information of the backscatter modulation signal; The first device generates a corresponding backscatter modulation signal based on this frequency or bandwidth related information;

[0080] Signal transmission parameters of the backscatter modulation signal; The first device transmits the backscatter modulation signal based on this signal transmission parameter;

[0081] Signal transmission parameters of the radio frequency carrier signal; The first device accurately receives the radio frequency carrier signal based on this signal transmission parameter.

[0082] Optionally, the parameter information of the first signal includes, but is not limited to, at least one of the following:

[0083] The center frequency of the first signal;

[0084] The signal bandwidth of the first signal;

[0085] The waveform type of the first signal, such as a sine wave, a square wave, etc.;

[0086] The amplitude or power of the first signal;

[0087] The maximum allowable frequency error ppm of the first signal;

[0088] The time-domain correlation information of the first signal, such as including the signal period, the signal length, etc.;

[0089] The type identifier of the first signal, where each type of first signal is associated with at least one signal parameter; for example, 4 types of first signals can be pre-configured or agreed upon by protocol, and each type corresponds to specific parameters such as frequency points, bandwidths, waveforms, etc.; when indicating the parameter information of the first signal, only the corresponding type identifier needs to be indicated; the parameters associated with each type of the first signal can be configured by a higher layer, or agreed upon by protocol, or configured during factory settings.

[0090] Optionally, the frequency or bandwidth related information of the backscatter modulation signal includes, but is not limited to, at least one of the following:

[0091] The signal bandwidth of the backscatter modulation signal;

[0092] The center frequency of the backscatter modulation signal;

[0093] The lowest frequency point and the signal bandwidth of the backscatter modulation signal;

[0094] The highest frequency point and the signal bandwidth of the backscatter modulation signal;

[0095] The lowest frequency point and the highest frequency point of the backscatter modulation signal;

[0096] The indication of the signal bandwidth and the upper and lower sidebands of the backscatter modulation signal;

[0097] The frequency point indication of the backscatter modulation signal, and the frequency point can be pre-configured by the network or system, and each frequency point corresponds to specific center frequency and bandwidth.

[0098] Optionally, the signal transmission parameters of the backscatter modulation signal include, but is not limited to, at least one of the following:

[0099] The modulation method of the backscatter modulation signal;

[0100] The modulation order or modulation level of the backscatter modulation signal;

[0101] The modulation rate or link frequency of the backscatter modulation signal;

[0102] The time-domain resources of the backscatter modulation signal, such as including signal period, signal length, etc.;

[0103] The signal power or reflection coefficient of the backscatter modulation signal;

[0104] The coding method of the backscatter modulation signal, such as line coding, channel coding, etc.;

[0105] The signal waveform of the backscatter modulation signal, such as sine wave, square wave, etc.;

[0106] The synchronization sequence corresponding to the backscatter device identifier;

[0107] The reference signal of the backscatter modulation signal.

[0108] Optionally, the signal transmission parameters of the radio frequency carrier signal include but are not limited to at least one of the following:

[0109] The signal waveform of the radio frequency carrier signal;

[0110] The transmission power of the radio frequency carrier signal;

[0111] The time-domain resource information of the radio frequency carrier signal, such as including but not limited to signal length, signal period, time interval between periodic signals, time window, etc.;

[0112] The frequency-domain resource information of the radio frequency carrier signal, such as including but not limited to signal bandwidth, center frequency point, etc.;

[0113] The synchronization sequence or preamble of the radio frequency carrier signal.

[0114] Optionally, the process of generating the backscatter modulation signal according to the first signal and the received radio frequency carrier signal may include at least one of the following:

[0115] The first device multiplies the first signal and the radio frequency carrier signal in the time domain to obtain the backscatter modulation signal; at this time, the backscatter modulation signal is a double-sideband intermediate-frequency quadrature backscatter modulation signal;

[0116] The first device multiplies the first signal and the radio frequency carrier signal in the time domain, and processes the obtained signal through a bandwidth filter to obtain the backscatter modulation signal; at this time, the backscatter modulation signal is a single-sideband backscatter modulation signal based on the filtering method;

[0117] 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; at this time, the backscatter modulation signal is a single-sideband backscatter modulation signal based on the phase shift method.

[0118] 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 backscatter modulation signal. For example, the signal processing can be, but is not limited to, inserting pilots, inserting training sequences, inserting reference signals, precoding processing, pulse shaping processing, etc.

[0119] Optionally, the first device can be, but is not limited to, any of the following:

[0120] A device for backscatter modulation based on load modulation;

[0121] A device for backscatter modulation based on transistors;

[0122] A device for intermediate frequency quadrature backscatter modulation, or a device with the ability to generate an intermediate frequency carrier;

[0123] 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.

[0124] In the embodiments of the present application, the first device can obtain the first information in multiple ways. The above acquisition of the first information can include at least one of the following:

[0125] The first device determines the first information, that is, the first device itself has the ability to determine the configuration information;

[0126] The first device receives the first information from the second device, and the second device is a device that provides a radio frequency carrier signal; for example, the second device can be a reader in a monostatic backscatter system, or a dedicated radio frequency source device in a bistatic backscatter system;

[0127] The first device receives the first information from the third device, and the third device is a receiving device for the backscatter modulation signal; for example, the third device is a receiving device in a bistatic backscatter system;

[0128] The first device receives the first information from the fourth device, and the fourth device is a device with network scheduling functions, such as a gateway, a router, an access network device, etc.

[0129] It should be noted that, in addition to the above ways of determining or configuring / indicating the first information, the first information may also be configured / indicated by at least two of the first device to the fourth device: (I) Multiple devices respectively configure partial first information and form complete first information; for example, the second device configures 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 parameter information of the first signal and 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 another device activates one group of the multiple groups of first information through physical layer or Medium 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 the first information through Downlink Control Information (DCI), Sidelink Control Information (SCI), or Layer 1 (L1) signaling.

[0130] Optionally, the first information may be determined according to at least one of the following:

[0131] Capability information of the first device; this capability information at least includes capability information related to generating carrier signals by the first device, such as supported carrier frequencies, bandwidths, filter capabilities, transmitter structures, backscatter modulation types, frequency deviation performance ppm, modulation methods, coding capabilities, etc.;

[0132] Capability information of the second device; this capability information at least includes capability information related to generating radio frequency carrier signals, such as supported radio frequency carrier frequencies, bandwidths, signal types, etc.;

[0133] Capability information of the third device; for example, this capability information at least includes information related to the receiver architecture of the third device (such as superheterodyne receiver architecture, zero-IF receiver architecture, low-IF receiver architecture, etc.), operating bandwidth, operating frequency, demodulation method, decoding capability, etc.;

[0134] Channel state information, signal quality information, or communication statistics 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 statistics information includes, but is not limited to, the number of consecutive successful ACKs, the number of NACKs, Block Error Rate (BLER), etc.

[0135] Device status information of the first device; for example, this device status information at least includes the current power level of the first device, overheat warning, etc.

[0136] Device status information of the third device; for example, this device status information at least includes the current power level of the third device, overheat warning, etc.

[0137] Request information of the first device; for example, it can be request information generated by the first device according to its own status or service requirements.

[0138] Data type information or Quality of Service (QoS) information; optionally, the data type information or QoS information comes from the application layer or the upper layer of the protocol.

[0139] Please refer to Figure 3 , Figure 3 which is a flowchart of an information configuration method provided by an embodiment of the present application. This method is executed by a fifth device. As Figure 3 shown, the method includes the following steps:

[0140] Step 31: The fifth device sends first information to the first device; the first information is used to determine or execute a first action, and the first action includes: generating a first signal, generating a backscatter modulation signal based on the first signal and a radio frequency carrier signal, and sending the backscatter modulation signal.

[0141] In the embodiments of the present application, the first signal is not a baseband data signal, which can be understood as a carrier signal independently generated by the first device and used to complete backscatter modulation together with the received radio frequency carrier signal. For example, the first signal can be a sine wave intermediate frequency signal to implement intermediate frequency quadrature backscatter modulation (IFQBM), thereby effectively implementing low-power backscatter high-order 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.

[0142] The above determination of the first action can be understood as follows: after the first device obtains the first information, it determines to generate the first signal (such as a sine wave intermediate frequency signal or a square wave control signal) according to the first information, rather than a baseband data signal, and determines to generate a backscatter modulation signal and send it according to the generated first signal and the received radio frequency carrier signal. The above execution of the first action can be understood as follows: after the first device obtains the first information, it directly generates the first signal (such as a sine wave intermediate frequency signal or a square wave control signal) according to the first information, rather than a baseband data signal, and generates a backscatter modulation signal and sends it according to the generated first signal and the received radio frequency carrier signal.

[0143] Optionally, the fifth device can be any one of the following: the second device that provides a radio frequency carrier signal; the third device that receives the backscatter modulation signal; the fourth device with a network scheduling function.

[0144] Thus, by reasonably configuring or indicating the first information, the first device (i.e., the backscatter device) can implement diverse backscatter modulations according to the first signal (such as a sine wave intermediate frequency signal / square wave control signal, etc.) independently generated by it, thereby effectively implementing low-power and high-spectrum-efficiency backscatter modulation to meet different communication performances (such as communication rate, communication distance, etc.) and power consumption requirements.

[0145] Optionally, the first information includes but is not limited to at least one of the following:

[0146] The parameter information of the first signal; based on this parameter information, the first device can generate the corresponding first signal, and then different backscatter modulation methods can be implemented to meet different communication performances (such as communication rate, communication distance, etc.) and power consumption requirements;

[0147] The frequency or bandwidth-related information of the backscatter modulation signal; based on this frequency or bandwidth-related information, the first device can generate the corresponding backscatter modulation signal;

[0148] The signal transmission parameters of the backscatter modulation signal; based on this signal transmission parameter, the first device can transmit the backscatter modulation signal;

[0149] The signal transmission parameters of the radio frequency carrier signal; based on these signal transmission parameters, the first device can accurately receive the radio frequency carrier signal.

[0150] Optionally, the parameter information of the first signal includes but is not limited to at least one of the following:

[0151] The center frequency of the first signal;

[0152] The signal bandwidth of the first signal;

[0153] The waveform type of the first signal, such as sine wave, square wave, etc.;

[0154] The amplitude or power of the first signal;

[0155] The maximum allowable frequency error ppm of the first signal;

[0156] The time-domain related information of the first signal, such as signal period, signal length, etc.;

[0157] The type identifier of the first signal, where each type of the first signal is associated with at least one signal parameter; for example, 4 types of the first signal can be pre-configured or agreed upon by the protocol, and each type corresponds to specific parameters such as frequency point, bandwidth, waveform, etc.; when indicating the parameter information of the first signal, only the corresponding type identifier needs to be indicated; the parameters associated with each type of the first signal can be configured by the upper layer, or agreed upon by the protocol, or configured during factory settings.

[0158] Optionally, the frequency or bandwidth related information of the backscatter modulation signal includes but is not limited to at least one of the following:

[0159] The signal bandwidth of the backscatter modulation signal;

[0160] The center frequency of the backscatter modulation signal;

[0161] The lowest frequency point and signal bandwidth of the backscatter modulation signal;

[0162] The highest frequency point and signal bandwidth of the backscatter modulation signal;

[0163] The lowest frequency point and the highest frequency point of the backscatter modulation signal;

[0164] The indication of the signal bandwidth and the upper and lower sidebands of the backscatter modulation signal;

[0165] The frequency point indication of the backscatter modulation signal, where the frequency point can be pre-configured by the network or system, and each frequency point corresponds to specific center frequency and bandwidth.

[0166] Optionally, the signal transmission parameters of the backscatter modulation signal include but are not limited to at least one of the following:

[0167] The modulation method of the backscatter modulation signal;

[0168] The modulation order or modulation level of the backscatter modulation signal;

[0169] The modulation rate or link frequency of the backscatter modulation signal;

[0170] The time-domain resources of the backscatter modulation signal, such as signal period, signal length, etc.;

[0171] The signal power or reflection coefficient of the backscatter modulation signal;

[0172] The coding method of the backscatter modulation signal, such as line coding, channel coding, etc.;

[0173] The signal waveform of the backscatter modulation signal, such as sine wave, square wave, etc.;

[0174] The synchronization sequence corresponding to the backscatter device identifier;

[0175] The reference signal of the backscatter modulation signal.

[0176] Optionally, the signal transmission parameters of the radio frequency carrier signal include but are not limited to at least one of the following:

[0177] The signal waveform of the radio frequency carrier signal;

[0178] The transmission power of the radio frequency carrier signal;

[0179] The time-domain resource information of the radio frequency carrier signal, such as including but not limited to signal length, signal period, time interval between periodic signals, time window, etc.;

[0180] The frequency-domain resource information of the radio frequency carrier signal, such as including but not limited to signal bandwidth, center frequency point, etc.;

[0181] The synchronization sequence or preamble of the radio frequency carrier signal.

[0182] Optionally, the information configuration method in this embodiment may further include:

[0183] The fifth device determines the first information according to the second information; the second information includes at least one of the following:

[0184] Capability information of the first device; this capability information includes at least the capability information related to generating carrier signals by the first device, such as supported carrier frequencies, bandwidths, filter capabilities, transmitter structures, backscatter modulation types, frequency deviation performance in ppm, modulation methods, coding capabilities, etc.;

[0185] Capability information of the second device; this capability information includes at least the capability information related to generating radio frequency carrier signals, such as supported radio frequency carrier frequencies, bandwidths, signal types, etc.;

[0186] 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 superheterodyne receiver architecture, zero-IF receiver architecture, low-IF receiver architecture, etc.), operating bandwidth, operating frequency, demodulation method, decoding capability, etc.;

[0187] 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 ACKs, the number of negative acknowledgments NACKs, Block Error Rate (BLER), etc.;

[0188] Device state information of the first device; for example, this device state information includes at least the current power level, overheat warning, etc. of the first device;

[0189] Device state information of the third device; for example, this device state information includes at least the current power level, overheat warning, etc. of the third device;

[0190] Request information of the first device; for example, it can be request information generated by the first device according to its own status or service requirements.

[0191] Data type information or Quality of Service (QoS) information of the service; optionally, the data type information or QoS information of the service comes from the application layer or the protocol upper layer.

[0192] The present application will be described below in conjunction with specific embodiments.

[0193] Embodiment 1

[0194] Embodiment 1 mainly illustrates intermediate frequency quadrature backscatter modulation. The first device can generate a required intermediate frequency signal (i.e., the first signal) according to the acquired first information, and multiply it by the received radio frequency carrier signal, so as to generate an intermediate frequency quadrature backscatter modulation signal.

[0195] As Figure 1C shown, the first device (i.e., the backscatter device) can generate a first signal (such as an intermediate frequency carrier signal or an intermediate frequency local oscillator signal) with a center frequency of f IF and a bandwidth of B according to the indication of the first information, and multiply the first signal f IF by the received radio frequency carrier signal f RF to generate a signal f RF +f IF after intermediate frequency quadrature backscatter modulation. Wherein, the first information at least includes at least one of the following:

[0196] (a) Parameter information of the first signal, at least including any one of the following:

[0197] (I) The center frequency point of the first signal;

[0198] (II) The bandwidth of the first signal;

[0199] (III) The waveform type of the first signal, which is a sine wave in Embodiment 1;

[0200] (IV) The amplitude of the first signal (such as voltage, current, etc.);

[0201] (IIV) The maximum allowable frequency error ppm of the first signal;

[0202] (V) The signal length or time domain related information of the first signal.

[0203] (b) Frequency or bandwidth related information of the backscatter modulation signal, at least including any one of the following:

[0204] (I) The signal bandwidth of the backscatter modulation signal;

[0205] (II) The center frequency point of the backscatter modulation signal;

[0206] (III) The lowest frequency point and the signal bandwidth of the backscatter modulation signal;

[0207] (IV) The highest frequency point and the signal bandwidth of the backscatter modulation signal;

[0208] (IIV) The lowest frequency point and the highest frequency point of the backscatter modulation signal;

[0209] (V) Signal bandwidth and upper and lower sideband indication of the backscatter modulation signal;

[0210] (VI) Frequency point indication of the backscatter modulation signal, where the frequency point is pre-configured by the network or system.

[0211] (c) Signal transmission parameters of the backscatter modulation signal, including at least one of the following: modulation method, modulation order, modulation rate, time-domain resource, signal length, signal power, coding method, signal waveform, etc. of the second signal.

[0212] (d) Signal transmission parameters of the RF carrier signal, including at least one of the following: waveform of the RF carrier signal, transmission power, signal bandwidth, center frequency point, signal length, signal period, synchronization sequence, etc.

[0213] Through the solution in Embodiment 1, the first device can generate an intermediate-frequency quadrature backscatter modulation signal that meets the requirements such as the operating frequency band, operating bandwidth, modulation rate, etc. according to the configuration or indication of the first information, so as to achieve high-order modulation while ensuring low power consumption.

[0214] Embodiment 2

[0215] This Embodiment 2 mainly describes single-sideband backscatter modulation. The first device can generate the required first signal (such as a square wave signal) according to the acquired first information, and then use the first signal as the input signal for controlling the instantaneous reflection coefficient of the device, and multiply it with the received RF carrier frequency signal to generate a single-sideband backscatter modulation signal.

[0216] As Figure 1D shown, the first device (i.e., the backscatter device) can generate a first signal (such as a square wave signal) with a center frequency of f IF , and a bandwidth of B according to the indication of the first information. This first signal carries the information to be modulated by the first device; assume that s(t) is denoted as the first signal, is the Hilbert transform of the signal s(t); it can be seen from the expression of the backscatter modulation signal that it is very similar to the single-sideband modulation signal x ssb (t), and only by effectively setting the instantaneous reflection coefficient can a single-sideband backscatter modulation signal be generated, and the real part and imaginary part of its complex-domain reflection coefficient are respectively controlled by the control signal (baseband signal to be modulated) s(t) and . In a possible implementation, assume that the first device supports four complex reflection coefficients, as Figure 1D shown, then the mapping relationship between the instantaneous reflection coefficient and the control signals s(t) and is as follows:

[0217]

[0218] Among them, |Γ 0 | = |Γ 1 | = |Γ 2 | = |Γ 3 |, and the phases corresponding to the four reflection coefficients are uniformly distributed on the Smith chart.

[0219] In this Embodiment 2, according to the indication of the first information, the reflection coefficient determined by the first signal and its Hilbert transform can be multiplied by the received radio frequency carrier signal f RF = cos(2πf CW t) to generate a single-sideband backscatter modulation signal If the reflection coefficient is written in the form of the sum of a real part and an imaginary part, that is, Ae jφ = Γ I + jΓ Q , then the backscatter modulation signal can be expressed as:

[0220]

[0221] Based on this, a single-sideband backscatter modulation signal can be obtained.

[0222] It should be noted that for the specific content included in the first information in this Embodiment 2, reference can be made to the above-mentioned Embodiment 1, which will not be elaborated here. The main difference is that the waveform type of the first signal involved in this Embodiment 2 is a square wave signal.

[0223] Through the solution in this Embodiment 2, the first device can generate a single-sideband backscatter modulation signal that meets the requirements such as the working frequency band, working bandwidth, and modulation rate according to the configuration or indication of the first information, so as to achieve high-order modulation while ensuring low power consumption.

[0224] Embodiment 3

[0225] In this Embodiment 3, the signaling interaction processes between the first device and other devices (such as the second device, the third device, or the fourth device) are mainly given under several typical network deployment architectures.

[0226] Such as Figure 4AIn the typical single - base architecture shown, the second device and the third device are the same device. That is, the second device is both the device for receiving and demodulating the backscatter modulation signal, and at the same time the device for providing the radio - frequency carrier signal to the first device, and also the device for configuring and indicating the first information to the first device. Additionally, at this time, the device for providing the radio - frequency carrier signal to the first device can also be the third device. At this time, 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 the first signal according to the received first information, generates the backscatter modulation signal based on the first signal and the radio - frequency carrier signal, and sends the backscatter modulation signal to the third device (i.e., the second device). Optionally, necessary signal processing such as inserting a synchronization sequence and inserting a pilot into the backscatter modulation signal can be performed. This typical architecture includes the base - station - UE communication mode, the UE - UE communication mode without network control in sidelink, the AP - STA - STA mode in wifi, or the STA - STA (i.e., the wifi direct - connection mode), the communication mode in Bluetooth / Zigbee, etc. That is, one of the communicating devices (here taking the second device as an example) has the ability to determine the first information and send the first information to the first device.

[0227] In another network deployment architecture, in addition to the first device and the third device directly participating in the communication, the fourth device can be used 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 further divided into the following sub - modes:

[0228] In sub - mode 1, as Figure 4B shown, the fourth device configures or indicates the first information to the first device. The first device generates the first signal and the backscatter modulation signal according to the first information, and sends the backscatter modulation signal to the third device. At this time, the device for sending the radio - frequency carrier signal to the first device can be either the third device or the second device (a dedicated radio - frequency carrier device), which is not limited in this case.

[0229] In sub - mode 2, as Figure 4C shown, 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 where there is a master UE and a slave UE in sidelink. The base station configures or indicates the first information of the master UE, and then the master UE configures or indicates the first information of the slave UE.

[0230] In sub - mode 3, as Figure 4DAs shown, the fourth device and the third device simultaneously configure or indicate the first information to the first device. For example, the fourth device configures or indicates the first information to the third device, and then the fourth device configures or indicates a part of the first information, and the third device configures or indicates a part of the first information, and the two together constitute the complete first information. In another possible solution, the fourth device can first configure a set of first information in the first device through RRC signaling, and the third device activates one of the first information through MAC-CE, DCI, SCI, L1 signaling, etc. Another possible solution is that the fourth device configures or indicates a part of the first information, and the third device configures or indicates a part of the first information, and the two together constitute the complete first information.

[0231] It should be noted that for the above-mentioned three network deployment architectures, if the device providing the radio frequency carrier signal for the first device is the second device, in the case of a single base station, the second device is also the fifth device. In another possible solution, if the third device is only a receiving device for backscatter modulation signals, there is also a second device providing the radio frequency carrier signal for the first device in the above-mentioned several network deployment architectures, 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 to enable it to generate and send the radio frequency carrier signal to the first device, or the fourth device configures or indicates the fourth information to the third device to enable it to generate and send the radio frequency carrier signal to the first device. The third information and the fourth information are signal parameters related to the radio frequency carrier signal, including at least one of the following:

[0232] (a) The waveform of the radio frequency carrier signal;

[0233] (b) The transmission power of the radio frequency carrier signal;

[0234] (c) The bandwidth and center frequency of the radio frequency carrier signal;

[0235] (d) The duration, period, etc. of the radio frequency carrier signal.

[0236] Embodiment 4

[0237] Embodiment 4 of the present invention provides a signaling configuration process applicable to the present solution. Taking Figure 5 as an example, at this time, the device configuring or indicating the first information and the third information (or the fourth information) 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, the device with network scheduling function. After the first device completes the generation of the first signal and the backscatter modulation signal, and the fourth device configures or indicates the first information, a signaling interaction process for capability reporting needs to be completed first between the first device, the third device and the fourth device. Optionally, the second device also needs to complete the signaling interaction process for capability reporting with the fourth device.

[0238] The specific interaction process (corresponding to Figure 4B the network deployment architecture shown) includes: The fourth device configures the parameters of the radio frequency carrier signal for the second device through the third information according to the obtained second information (such as capability information and other information), and configures the parameters of the radio frequency carrier signal for the third device through the fourth information; The second device generates a radio frequency carrier signal according to the third information or the third device generates a radio frequency carrier signal according to the fourth information and sends it to the first device. Further, the fourth device determines the signal parameters of the first signal and the radio frequency carrier signal according to the obtained second information, and indicates the parameters of the first signal and the radio frequency carrier signal to the first device through the first information. The first device generates the first signal according to the obtained first information, and multiplies the first signal by the radio frequency carrier signal, or multiplies the radio frequency carrier signal by the reflection coefficient controlled by the first signal to generate a backscatter modulation signal; and sends the backscatter modulation signal to the third device.

[0239] It should be noted that for other network deployment architectures in Embodiment 3 of this solution, they can all be improved based on Figure 5 the signaling process in, such as the fusion of device functions (such as the fusion of the fifth device and the third device), or the configuration or indication entity 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 set of the first information, 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 within the protection scope of the solution in this application. Persons skilled in the relevant art can make corresponding extensions according to the embodiments of this application, and these all belong to the solution to be protected by this application.

[0240] In the information sending method provided by the embodiments of this application, the execution subject can be an information sending device. In the embodiments of this application, taking the information sending device executing the information sending method as an example, the information sending device provided by the embodiments of this application is described.

[0241] Please refer to Figure 6 , Figure 6 which is a schematic structural diagram of an information sending device provided by the embodiments of this application. The device is applied to the first device, and the first device is, for example, a backscatter communication device with a certain carrier generation ability. As Figure 6 shown, the information sending device 60 includes:

[0242] An obtaining module 61, configured to obtain the first information;

[0243] An execution module 62, configured to determine or execute a first behavior according to the first information; wherein, the first behavior includes: generating a first signal, generating a backscatter modulation signal according to the first signal and the received radio frequency carrier signal, and sending the backscatter modulation signal.

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

[0245] Parameter information of the first signal;

[0246] Frequency or bandwidth related information of the backscatter modulation signal;

[0247] Signal transmission parameters of the backscatter modulation signal;

[0248] Signal transmission parameters of the radio frequency carrier signal.

[0249] Optionally, the parameter information of the first signal includes at least one of the following:

[0250] Center frequency point of the first signal;

[0251] Signal bandwidth of the first signal;

[0252] Waveform type of the first signal;

[0253] Amplitude or power of the first signal;

[0254] Maximum allowable frequency error of the first signal;

[0255] Time domain related information of the first signal, such as signal period, signal length, etc.;

[0256] Type identifier of the first signal, wherein each type of the first signal is associated with at least one signal parameter.

[0257] Optionally, the frequency or bandwidth related information of the backscatter modulation signal includes at least one of the following:

[0258] Signal bandwidth of the backscatter modulation signal;

[0259] Center frequency point of the backscatter modulation signal;

[0260] Lowest frequency point and signal bandwidth of the backscatter modulation signal;

[0261] Highest frequency point and signal bandwidth of the backscatter modulation signal;

[0262] Lowest frequency point and highest frequency point of the backscatter modulation signal;

[0263] The signal bandwidth of the backscatter modulation signal and the indication of the upper and lower sidebands;

[0264] The frequency point indication of the backscatter modulation signal, and the frequency point can be pre-configured by the network or system;

[0265] Alternatively, the signal transmission parameters of the backscatter modulation signal include at least one of the following:

[0266] The modulation method of the backscatter modulation signal;

[0267] The modulation order or modulation level of the backscatter modulation signal;

[0268] The modulation rate or link frequency of the backscatter modulation signal;

[0269] The time-domain resources of the backscatter modulation signal, such as including the signal period, signal length, etc.;

[0270] The signal power or reflection coefficient of the backscatter modulation signal;

[0271] The coding method of the backscatter modulation signal, such as line coding, channel coding, etc.;

[0272] The signal waveform of the backscatter modulation signal;

[0273] The synchronization sequence corresponding to the backscatter device identifier;

[0274] The reference signal of the backscatter modulation signal.

[0275] Optionally, the signal transmission parameters of the radio frequency carrier signal include at least one of the following:

[0276] The signal waveform of the radio frequency carrier signal;

[0277] The transmission power of the radio frequency carrier signal;

[0278] The time-domain resource information of the radio frequency carrier signal;

[0279] The frequency-domain resource information of the radio frequency carrier signal;

[0280] The synchronization sequence or preamble of the radio frequency carrier signal.

[0281] Optionally, the execution module 62 is specifically configured to execute at least one of the following:

[0282] Perform time-domain multiplication of the first signal and the radio frequency carrier signal to obtain the backscatter modulation signal;

[0283] Multiply the first signal and the radio frequency carrier signal in the time domain, and process the obtained signal through a bandwidth filter to obtain the backscatter modulation signal;

[0284] Use the first signal as the input signal for controlling the load impedance, and multiply it with the radio frequency carrier signal to obtain the backscatter modulation signal;

[0285] Generate a second signal according to the first signal and the received radio frequency carrier signal, and perform signal processing on the second signal to obtain the backscatter modulation signal.

[0286] Optionally, the first device is any one of the following:

[0287] A device for backscatter modulation based on load modulation;

[0288] A device for backscatter modulation based on a transistor;

[0289] A device for intermediate frequency quadrature backscatter modulation, or a device with the ability to generate an intermediate frequency carrier;

[0290] 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.

[0291] Optionally, the obtaining module 61 is specifically configured to perform at least one of the following:

[0292] Determine the first information;

[0293] Receive the first information from a second device, where the second device is a device that provides the radio frequency carrier signal;

[0294] Receive the first information from a third device, where the third device is a device that receives the backscatter modulation signal;

[0295] Receive the first information from a fourth device, where the fourth device is a device with network scheduling capabilities.

[0296] Optionally, the first information is determined according to at least one of the following:

[0297] The capability information of the first device;

[0298] The capability information of the second device;

[0299] The capability information of the third device;

[0300] The channel state information, signal quality information, or communication statistics information between the first device and the third device;

[0301] The device state information of the first device;

[0302] The device status information of the third device;

[0303] The request information of the first device;

[0304] Data type information or service quality of service information. The above data type information or service quality of service information may come from the application layer or the upper layer of the protocol.

[0305] The information sending device 60 provided by the embodiments of the present application can implement Figure 2 each process implemented by the method embodiments and achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0306] Please refer to Figure 7 , Figure 7 which is a schematic structural diagram of an information configuration device provided by the embodiments of the present application. This device is applied to the fifth device, as Figure 7 shown. The information configuration device 70 includes:

[0307] A sending module 71, configured 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 backscatter modulation signal according to the first signal and a radio frequency carrier signal, and sending the backscatter modulation signal.

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

[0309] The parameter information of the first signal;

[0310] The frequency or bandwidth related information of the backscatter modulation signal;

[0311] The signal transmission parameter of the backscatter modulation signal;

[0312] The signal transmission parameter of the radio frequency carrier signal.

[0313] Optionally, the parameter information of the first signal includes at least one of the following:

[0314] The center frequency point of the first signal;

[0315] The signal bandwidth of the first signal;

[0316] The waveform type of the first signal;

[0317] The amplitude or power of the first signal;

[0318] The maximum frequency error allowed by the first signal;

[0319] The time-domain correlation information of the first signal, such as signal period, signal length, etc.;

[0320] The type identifier of the first signal, wherein each type of the first signal is associated with at least one signal parameter. Optionally, the frequency or bandwidth related information of the backscatter modulation signal includes at least one of the following:

[0321] The signal bandwidth of the backscatter modulation signal;

[0322] The center frequency point of the backscatter modulation signal;

[0323] The lowest frequency point and signal bandwidth of the backscatter modulation signal;

[0324] The highest frequency point and signal bandwidth of the backscatter modulation signal;

[0325] The lowest frequency point and the highest frequency point of the backscatter modulation signal;

[0326] The signal bandwidth of the backscatter modulation signal and the indication of the upper and lower sidebands;

[0327] The frequency point indication of the backscatter modulation signal, and the frequency point can be pre-configured by the network or system;

[0328] Alternatively, the signal transmission parameters of the backscatter modulation signal include at least one of the following:

[0329] The modulation mode of the backscatter modulation signal;

[0330] The modulation order or modulation level of the backscatter modulation signal;

[0331] The modulation rate or link frequency of the backscatter modulation signal;

[0332] The time-domain resources of the backscatter modulation signal, such as signal period, signal length, etc.;

[0333] The signal power or reflection coefficient of the backscatter modulation signal;

[0334] The coding method of the backscatter modulation signal, such as line coding, channel coding, etc.;

[0335] The signal waveform of the backscatter modulation signal;

[0336] The synchronization sequence corresponding to the backscatter device identifier;

[0337] The reference signal of the backscatter modulation signal.

[0338] Optionally, the signal transmission parameters of the radio frequency carrier signal include at least one of the following:

[0339] The signal waveform of the radio frequency carrier signal;

[0340] The transmission power of the radio frequency carrier signal;

[0341] The time domain resource information of the radio frequency carrier signal;

[0342] The frequency domain resource information of the radio frequency carrier signal;

[0343] The synchronization sequence or preamble of the radio frequency carrier signal.

[0344] Optionally, the information configuration device 70 further includes:

[0345] A determination module, configured to determine the first information according to the second information; the second information includes at least one of the following:

[0346] The capability information of the first device;

[0347] The capability information of the second device that provides the radio frequency carrier signal;

[0348] The capability information of the third device that receives the backscatter modulation signal;

[0349] The channel state information, signal quality information or communication statistics information between the first device and the third device;

[0350] The device state information of the first device;

[0351] The device state information of the third device;

[0352] The request information of the first device;

[0353] Data type information or service quality of service information.

[0354] Optionally, the fifth device is any one of the following:

[0355] The second device that provides the radio frequency carrier signal;

[0356] The third device that receives the backscatter modulation signal;

[0357] The fourth device with network scheduling function.

[0358] The information configuration device 70 provided by the embodiments of the present application can implement Figure 3 each process implemented by the method embodiments and achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0359] Such as Figure 8As shown in the figure, an embodiment of the present application further provides a communication device 80, including a processor 81 and a memory 82. A program or instruction that can run on the processor 81 is stored on the memory 82. When the program or instruction is executed by the processor 81, each step of the above-mentioned information sending method embodiment is implemented, or each step of the above-mentioned information configuration method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be elaborated here.

[0360] An embodiment of the present application further provides a readable storage medium. A program or instruction is stored on the readable storage medium. When the program or instruction is executed by a processor, each process of the above-mentioned information sending method embodiment is implemented, or each step of the above-mentioned information configuration method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be elaborated here.

[0361] Wherein, 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, a random access memory RAM, a magnetic disk, or an optical disc, etc. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0362] Another embodiment of the present application provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a program or instruction to implement each process of the above-mentioned information sending method embodiment, or each step of the above-mentioned information configuration method embodiment, and the same technical effect can be achieved. To avoid repetition, it will not be elaborated here.

[0363] It should be understood that the chip mentioned in the embodiment of the present application may also be referred to as a system-on-chip, a system chip, a chip system, or a system-on-chip, etc.

[0364] Another embodiment of the present application provides a computer program / program product. The computer program / program product is stored in a storage medium. The computer program / program product is executed by at least one processor to implement each process of the above-mentioned information sending method embodiment, or each step of the above-mentioned information configuration method embodiment, and the same technical effect can be achieved. To avoid repetition, it will not be elaborated here.

[0365] An embodiment of the present application further provides a communication system, including: a first device and a fifth device. The first device can be used to execute the steps of the above-mentioned information sending method, and the fifth device can be used to execute the steps of the above-mentioned information configuration method; 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 backscatter modulation signal; a fourth device with a network scheduling function.

[0366] It should be noted that in this text, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising that 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, but may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0367] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-described example methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions for causing a terminal or a network-side device to execute the methods described in various embodiments of the present application.

[0368] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms of embodiments without departing from the purpose of the present application and the scope protected by the claims. These embodiments are all within the protection scope of the present application.

Claims

1. An information sending method, characterized in that, it includes: The first device acquires first information; The first device determines or executes a first action according to the first information; wherein, the first action includes: generating a first signal, generating a backscatter modulation signal according to the first signal and the received radio frequency carrier signal, and sending the backscatter modulation signal.

2. The method according to claim 1, characterized in that, The first information includes at least one of the following: Parameter information of the first signal; Frequency or bandwidth related information of the backscatter modulation signal; Signal transmission parameters of the backscatter modulation signal; Signal transmission parameters of the radio frequency carrier signal.

3. The method according to claim 2, characterized in that, The parameter information of the first signal includes at least one of the following: Center frequency point of the first signal; Signal bandwidth of the first signal; Waveform type of the first signal; Amplitude or power of the first signal; Maximum allowable frequency error of the first signal; Time domain related information of the first signal; Type identifier of the first signal, wherein each type of the first signal is associated with at least one signal parameter.

4. The method according to claim 2, characterized in that, The frequency or bandwidth related information of the backscatter modulation signal includes at least one of the following: Signal bandwidth of the backscatter modulation signal; Center frequency point of the backscatter modulation signal; Lowest frequency point and signal bandwidth of the backscatter modulation signal; Highest frequency point and signal bandwidth of the backscatter modulation signal; Lowest frequency point and highest frequency point of the backscatter modulation signal; Indication of signal bandwidth and upper and lower sidebands of the backscatter modulation signal; Frequency point indication of the backscatter modulation signal; Or, The signal transmission parameters of the backscatter modulation signal include at least one of the following: Modulation method of the backscatter modulation signal; Modulation order or modulation level of the backscatter modulation signal; Modulation rate or link frequency of the backscatter modulation signal; Time domain resources of the backscatter modulation signal; Signal power or reflection coefficient of the backscatter modulation signal; Coding method of the backscatter modulation signal; Signal waveform of the backscatter modulation signal; Synchronization sequence corresponding to the backscatter device identifier; Reference signal of the backscatter modulation signal.

5. The method according to claim 2, characterized in that, The signal transmission parameters of the radio frequency carrier signal include at least one of the following: Signal waveform of the radio frequency carrier signal; 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; Synchronization sequence or preamble of the radio frequency carrier signal.

6. The method according to any one of claims 1 to 5, characterized in that, The generating the backscatter modulation 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 and the radio frequency carrier signal in the time domain to obtain the backscatter modulation signal; The first device multiplies the first signal and the radio frequency carrier signal in the time domain, and processes the obtained signal through a bandwidth filter to obtain the backscatter modulation signal; The first device uses the first signal as an input signal for controlling the load impedance, multiplies it with the radio frequency carrier signal, and obtains the backscatter modulation 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 backscatter modulation signal.

7. The method according to any one of claims 1 to 6, wherein, The first device is any one of the following: A device for backscatter modulation based on load modulation; A device for backscatter modulation based on transistors; A device for intermediate frequency quadrature backscatter modulation, or a device with the ability to generate an intermediate frequency carrier; 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.

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, and the second device is a device that provides the radio frequency carrier signal; The first device receives the first information from a third device, and the third device is a device that receives the backscatter modulation signal; The first device receives the first information from a fourth device, and the fourth device is a device with network scheduling capabilities.

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

10. An information configuration method, wherein, It includes: A fifth device sends first information to a first device; wherein, the first information is used to determine or execute a first action, and the first action includes: generating a first signal, generating a backscatter modulation signal according to the first signal and a radio frequency carrier signal, and sending the backscatter modulation 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 backscatter modulation signal; Signal transmission parameters of the backscatter modulation 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; The signal bandwidth of the first signal; The waveform type of the first signal; The amplitude or power of the first signal; The maximum frequency error allowed by the first signal; The time-domain correlation information of the first signal; The type identifier of the first signal, 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 backscatter modulation signal includes at least one of the following: The signal bandwidth of the backscatter modulation signal; The center frequency point of the backscatter modulation signal; The lowest frequency point and signal bandwidth of the backscatter modulation signal; The highest frequency point and signal bandwidth of the backscatter modulation signal; The lowest frequency point and the highest frequency point of the backscatter modulation signal; The indication of the signal bandwidth and the upper and lower sidebands of the backscatter modulation signal; The frequency point indication of the backscatter modulation signal; Or, The signal transmission parameters of the backscatter modulation signal include at least one of the following: The modulation method of the backscatter modulation signal; The modulation order or modulation level of the backscatter modulation signal; The modulation rate or link frequency of the backscatter modulation signal; The time-domain resources of the backscatter modulation signal; The signal power or reflection coefficient of the backscatter modulation signal; The coding method of the backscatter modulation signal; The signal waveform of the backscatter modulation signal; The synchronization sequence corresponding to the backscatter device identifier; The reference signal of the backscatter modulation signal.

14. The method according to claim 11, wherein, The signal transmission parameters of the radio frequency carrier signal include at least one of the following: The signal waveform of the radio frequency carrier signal; The transmission power of the radio frequency carrier signal; The time-domain resource information of the radio frequency carrier signal; The frequency-domain resource information of the radio frequency carrier signal; The synchronization sequence or preamble of the radio frequency carrier signal.

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

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

17. An information sending device, wherein, comprising: An acquisition module for acquiring first information; An execution module, configured to determine or execute a first behavior according to the first information; wherein, the first behavior includes: generating a first signal, generating a backscatter modulation signal according to the first signal and a received radio frequency carrier signal, and transmitting the backscatter modulation signal.

18. The apparatus according to claim 17, wherein, the execution module is further configured to perform at least one of the following: performing a time-domain multiplication of the first signal and the radio frequency carrier signal to obtain the backscatter modulation signal; performing a time-domain multiplication of the first signal and the radio frequency carrier signal, and processing the obtained signal through a bandwidth filter to obtain the backscatter modulation signal; using the first signal as an input signal for controlling a load impedance, and multiplying the first signal with the radio frequency carrier signal to obtain the backscatter modulation signal; generating a second signal according to the first signal and the received radio frequency carrier signal, and performing signal processing on the second signal to obtain the backscatter modulation signal.

19. The apparatus 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, where the third device is a device that receives the backscatter modulation signal; receiving the first information from a fourth device, where the fourth device is a device with a network scheduling function.

20. An information configuration apparatus, wherein, comprising: a sending module, configured 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 modulation signal according to the first signal and a radio frequency carrier signal, and transmitting the backscatter modulation signal.

21. The apparatus according to claim 20, wherein, the apparatus further comprises: a determining module, configured to determine the first information according to second information; the second information includes at least one of the following: capability information of the first device; capability information of a second device that provides the radio frequency carrier signal; capability information of a third device that receives the backscatter modulation signal; channel state information, signal quality information or communication statistics information between the first device and the third device; device state information of the first device; device state information of the third device; request information of the first device; data type information or service quality of service information.

22. A communication device, wherein, comprising a processor and a memory, the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, it implements the steps of the information sending method according to any one of claims 1 to 9, or implements the steps of the information configuration method according to any one of claims 10 to 16.

23. A readable storage medium, wherein, The program or instructions are stored on the readable storage medium, and when the program or instructions are executed by the processor, the steps of the information sending method described in any one of claims 1 to 9 are implemented, or the steps of the information configuration method described in any one of claims 10 to 16 are implemented.

Images