Wireless communication method, terminal device and network device

Abstract

Provided are a wireless communication method, a terminal device and a network device, different terminal devices corresponding to different trigger signals, so that different terminal devices can use resources indicated by resource indication information in different trigger signals, thereby improving the user experience. According to the invention, ordered and distinguished transmission of data of a large number of different zero-power-consumption terminals in a cell can be realized, and reliable transmission of the data is ensured. The wireless communication method comprises the following steps: the terminal equipment receives a trigger signal; wherein the trigger signal carries identification information and resource indication information, the identification information is used for indicating whether the trigger signal is a signal for the terminal equipment, and the resource indication information is used for indicating resource information occupied by data associated with the trigger signal; the terminal device obtains energy through energy collection for communication, information collection and processing.

Description

Wireless communication method, terminal device and network device Technical Field

[0001] The embodiments of the present application relate to the field of communications, and more specifically, to a wireless communication method, terminal device, and network device. Background Art

[0002] In the process of applying zero-power technology to cellular networks, there may be a large number of different zero-power terminals in the cell. How to achieve orderly and differentiated transmission of data from a large number of different zero-power terminals in the cell is a problem that needs to be solved.

[0003] Summary of the Invention

[0004] The embodiments of the present application provide a method, terminal device and network device for wireless communication. Different terminal devices correspond to different trigger signals. Thus, different terminal devices can use the resources indicated by the resource indication information in different trigger signals, thereby enabling orderly and differentiated transmission of data of a large number of different zero-power terminals in a cell, thereby ensuring reliable transmission of data.

[0005] In a first aspect, a wireless communication method is provided, the method comprising:

[0006] The terminal device receives the trigger signal;

[0007] Among them, the trigger signal carries identification information and resource indication information. The identification information is used to indicate whether the trigger signal is a signal for the terminal device, and the resource indication information is used to indicate the resource information occupied by the data associated with the trigger signal. The terminal device obtains energy through energy collection for communication, information collection and processing.

[0008] In a second aspect, a wireless communication method is provided, the method comprising:

[0009] The network device sends a trigger signal;

[0010] Among them, the trigger signal carries identification information and resource indication information. The identification information is used to indicate whether the trigger signal is a signal for the terminal device, and the resource indication information is used to indicate the resource information occupied by the data associated with the trigger signal. The terminal device obtains energy through energy collection for communication, information collection and processing.

[0011] In a third aspect, a terminal device is provided for executing the method in the first aspect.

[0012] Specifically, the terminal device includes a functional module for executing the method in the above-mentioned first aspect.

[0013] In a fourth aspect, a network device is provided for executing the method in the second aspect.

[0014] Specifically, the network device includes a functional module for executing the method in the above second aspect.

[0015] In a fifth aspect, a terminal device is provided, comprising a processor and a memory; the memory is used to store computer programs, and the processor is used to call and run the computer programs stored in the memory, so that the terminal device executes the method in the above-mentioned first aspect.

[0016] In a sixth aspect, a network device is provided, comprising a processor and a memory; the memory is used to store computer programs, and the processor is used to call and run the computer programs stored in the memory, so that the network device executes the method in the above-mentioned second aspect.

[0017] In a seventh aspect, a device is provided for implementing the method in any one of the first to second aspects above.

[0018] Specifically, the apparatus includes: a processor, configured to call and run a computer program from a memory, so that a device equipped with the apparatus executes the method in any one of the first to second aspects described above.

[0019] In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, wherein the computer program enables a computer to execute the method in any one of the first to second aspects above.

[0020] In a ninth aspect, a computer program product is provided, comprising computer program instructions, wherein the computer program instructions enable a computer to execute the method in any one of the first to second aspects above.

[0021] In a tenth aspect, a computer program is provided, which, when executed on a computer, enables the computer to execute the method in any one of the first to second aspects above.

[0022] Through the above technical solution, the trigger signal received by the terminal device carries identification information and resource indication information. The identification information is used to indicate whether the trigger signal is a signal for the terminal device, and the resource indication information is used to indicate the resource information occupied by the data associated with the trigger signal. In other words, different terminal devices correspond to different trigger signals. Therefore, different terminal devices can use the resources indicated by the resource indication information in different trigger signals. This can achieve orderly and differentiated data transmission for a large number of different zero-power terminals in a cell, ensuring reliable data transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG1 is a schematic diagram of a communication system architecture applied in an embodiment of the present application.

[0024] FIG2 is a schematic diagram of an exemplary zero-power communication system provided in the present application.

[0025] FIG3 is a schematic diagram of the energy harvesting principle provided by this application.

[0026] FIG4 is a schematic diagram of the backscatter communication principle provided by the present application.

[0027] FIG5 is a circuit diagram of resistive load modulation provided by the present application.

[0028] FIG6 is a schematic diagram of symmetrical frequency-shifted reflections generated in the transmission frequency domain provided by the present application.

[0029] FIG7 is a schematic diagram of an energy supply signal and a backscatter signal provided in an embodiment of the present application.

[0030] FIG8 is a schematic diagram of another power supply signal and backscatter signal provided in an embodiment of the present application.

[0031] FIG9 is a schematic interactive flowchart of a wireless communication method provided according to an embodiment of the present application.

[0032] FIG10 is a schematic diagram of a time-frequency resource provided according to an embodiment of the present application.

[0033] FIG11 is a schematic diagram of another time-frequency resource provided according to an embodiment of the present application.

[0034] FIG12 is a schematic diagram of amplitude modulation provided according to an embodiment of the present application.

[0035] FIG13 is a schematic flowchart of downlink data transmission according to an embodiment of the present application.

[0036] FIG14 is a schematic flowchart of uplink data transmission provided according to an embodiment of the present application.

[0037] Figure 15 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.

[0038] Figure 16 is a schematic block diagram of a network device provided according to an embodiment of the present application.

[0039] Figure 17 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

[0040] FIG18 is a schematic block diagram of a device provided according to an embodiment of the present application.

[0041] Figure 19 is a schematic block diagram of a communication system provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0042] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. With respect to the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0043] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE-based access to unlicensed spectrum (LTE-U) system on unlicensed spectrum, NR-based access to unlicensed spectrum (NR-U) system on unlicensed spectrum, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Internet of Things (IoT), Wireless Fidelity (WFI) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

[0044] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine type communication (MTC), vehicle-to-vehicle (V2V) communication, sidelink (SL) communication, vehicle-to-everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0045] In some embodiments, the communication system in the embodiments of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, an independent (SA) networking scenario, or a non-standalone (NSA) networking scenario.

[0046] In some embodiments, the communication system in the embodiments of the present application can be applied to an unlicensed spectrum, where the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiments of the present application can also be applied to an authorized spectrum, where the authorized spectrum can also be considered as an unshared spectrum.

[0047] In some embodiments, the communication system in the embodiments of the present application can be applied to the FR1 frequency band (corresponding to the frequency band range of 410MHz to 7.125GHz), can also be applied to the FR2 frequency band (corresponding to the frequency band range of 24.25GHz to 52.6GHz), and can also be applied to new frequency bands such as high-frequency bands corresponding to the frequency band range of 52.6GHz to 71GHz or the frequency band range of 71GHz to 114.25GHz.

[0048] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0049] The terminal device can be a station (ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0050] In an embodiment of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as a ship, etc.); it can also be deployed in the air (for example, on an airplane, balloon, and satellite, etc.).

[0051] In an embodiment of the present application, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city or a wireless terminal device in a smart home, an in-vehicle communication device, a wireless communication chip / application specific integrated circuit (ASIC) / system on chip (SoC), etc.

[0052] As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices may also be called wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are fully functional, large in size, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0053] In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in WLAN, a base station (BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device or base station (gNB) in an NR network, or a network device in a future evolved PLMN network or a network device in an NTN network, etc.

[0054] As an example and not a limitation, in an embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. In some embodiments, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. In some embodiments, the network device may also be a base station set up in a location such as land or water.

[0055] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0056] For example, a communication system 100 used in an embodiment of the present application is shown in FIG1 . The communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographic area and may communicate with terminal devices within the coverage area.

[0057] FIG1 exemplarily shows a network device and two terminal devices. In some embodiments, the communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0058] In some embodiments, the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

[0059] It should be understood that in the embodiments of the present application, a device having a communication function in a network / system may be referred to as a communication device. Taking the communication system 100 shown in FIG1 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function. The network device 110 and the terminal device 120 may be the specific devices described above and will not be described in detail here. The communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in the embodiments of the present application.

[0060] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the related objects are in an "or" relationship.

[0061] It should be understood that this document relates to a first communication device and a second communication device. The first communication device can be a terminal device, such as a mobile phone, a machine facility, a customer premises equipment (CPE), industrial equipment, a vehicle, etc.; the second communication device can be a peer communication device of the first communication device, such as a network device, a mobile phone, an industrial device, a vehicle, etc. In the embodiments of the present application, the first communication device can be a terminal device, and the second communication device can be a network device (i.e., uplink communication or downlink communication).

[0062] The terms used in the embodiments of this application are intended only to explain the specific embodiments of this application and are not intended to limit this application. The terms "first," "second," "third," and "fourth," etc. in the specification and claims of this application and the accompanying drawings are used to distinguish different objects, not to describe a specific order. In addition, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions.

[0063] It should be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0064] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0065] In the embodiments of the present application, "pre-definition" or "pre-configuration" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., a terminal device and a network device). The present application does not limit the specific implementation method. For example, pre-definition may refer to information defined in a protocol.

[0066] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communications field, for example, it may be an evolution of an existing LTE protocol, NR protocol, Wi-Fi protocol, or a protocol related to other communication systems. The present application does not limit the protocol type.

[0067] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The following related technologies can be combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the scope of protection of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0068] In recent years, the application of zero-power devices has become increasingly widespread. A typical zero-power device is radio frequency identification (RFID), a technology that uses radio coupling between the transmitter and receiver to achieve contactless automatic transmission and identification of tag information. This includes close-range inductive coupling and long-range electromagnetic coupling. RFID tags are also known as "radio frequency tags" or "electronic tags." Based on their power supply method, these tags can be divided into active, passive, and semi-passive types. Active tags, also known as active tags, are powered by a built-in battery. Unlike passive radio frequency activation, tags actively transmit information within a set frequency band. Passive tags, also known as passive tags, do not support built-in batteries. When a passive tag approaches a reader / writer, the tag's antenna, within the near field created by the reader / writer's antenna radiation, generates an induced current through electromagnetic induction. This induced current drives the tag's chip circuit. The chip circuit transmits the identification information stored in the tag to the reader / writer via the tag's antenna. Semi-active electronic tags inherit the advantages of passive electronic tags, such as small size, light weight, low price and long service life. When there is no reader access, the built-in battery only provides power for a small number of circuits in the chip. Only when the reader accesses, the built-in battery supplies power to the RFID chip to increase the tag's reading and writing distance and improve communication reliability.

[0069] As a wireless communication technology, the most basic RFID system consists of two parts: an electronic tag (TAG) and a reader / writer. The tag consists of a coupling component and a chip. Each tag has a unique electronic code and is placed on the target to mark the object. The reader / writer not only reads the information on the tag, but also writes to it and provides the energy required for communication. As shown in Figure 2, after the tag enters the electromagnetic field, it receives the radio frequency signal emitted by the reader / writer. Passive or passive tags use the energy generated by the electromagnetic field to transmit the information stored on the tag. The reader / writer reads the information and decodes it, thereby identifying the tag.

[0070] RFID is a type of zero-power communication. Key technologies for this type of zero-power communication include energy harvesting, backscatter communication, and low-power computing. As shown in Figure 2, a typical zero-power communication system consists of a reader and a zero-power terminal. The reader transmits radio waves to provide energy to the zero-power terminal. An energy harvesting module installed in the zero-power terminal collects energy from radio waves in space (Figure 2 shows the radio waves emitted by the reader) to drive the zero-power terminal's low-power computing module and implement backscatter communication. After harvesting energy, the zero-power terminal receives control commands from the reader and transmits data to the reader via backscatter based on control signaling. This data can be stored in the zero-power terminal (such as an identity tag or pre-programmed information, such as the product's production date, brand, and manufacturer). The zero-power terminal can also be equipped with various sensors, which can then report data collected by these sensors using a zero-power mechanism.

[0071] Zero-power communication utilizes energy harvesting and backscatter communication technologies. A zero-power communication network consists of network equipment and zero-power terminals. As shown in Figure 2, the network equipment is used to send wireless power supply signals and downlink communication signals to the zero-power terminals, as well as receive backscatter signals from the zero-power terminals. A basic zero-power terminal includes an energy harvesting module, a backscatter communication module, and a low-power computing module. Furthermore, the zero-power terminal may also include a memory or sensor for storing basic information (such as item identification) or acquiring sensor data such as ambient temperature and humidity.

[0072] The following describes the key technologies in zero-power communication.

[0073] Radio Frequency Power Harvesting

[0074] As shown in Figure 3, the RF energy harvesting module uses the principle of electromagnetic induction to collect electromagnetic wave energy from space, thereby obtaining the energy required to operate the zero-power terminal. For example, it is used to drive low-power demodulation and modulation modules, sensors, and memory reading. Therefore, the zero-power terminal does not require traditional batteries.

[0075] Back Scattering

[0076] As shown in Figure 4, a zero-power terminal receives a carrier signal sent by a network device, modulates it, loads the information to be transmitted, and radiates the modulated signal from the antenna. This information transmission process is called backscatter communication. Backscatter and load modulation are closely related. Load modulation achieves this by adjusting and controlling the circuit parameters of the zero-power terminal's oscillator circuit according to the data stream's rhythm, causing parameters such as the electronic tag's impedance to change accordingly. Load modulation techniques primarily include resistive load modulation and capacitive load modulation. In resistive load modulation, a resistor is connected in parallel with the load, which is turned on or off based on the binary data stream, as shown in Figure 5. The switching of the resistor causes a change in the circuit voltage, thus implementing amplitude-shifted keying (ASK). This modulation and transmission is achieved by adjusting the amplitude of the zero-power terminal's backscattered signal. Similarly, in capacitive load modulation, the switching of the capacitor changes the circuit's resonant frequency, enabling frequency-shifted keying (FSK). This modulation and transmission is achieved by adjusting the operating frequency of the zero-power terminal's backscattered signal.

[0077] It can be seen that the zero-power terminal uses load modulation to modulate the incoming signal, thereby realizing the backscatter communication process. Therefore, the zero-power terminal has significant advantages:

[0078] (1) The terminal does not actively transmit signals, so it does not require complex RF links such as PA and RF filters;

[0079] (2) The terminal does not need to actively generate high-frequency signals, so it does not need a high-frequency crystal oscillator;

[0080] (3) With the help of backscatter communication, terminal signal transmission does not need to consume the terminal's own energy.

[0081] Coding Technology

[0082] The data transmitted by electronic tags can be represented by various codes to represent binary "1" and "0." RFID systems typically use one of the following encoding methods: non-return-to-zero (NRZ), Manchester, unipolar return-to-zero (Unipolar RZ), differential bi-phase (DBP), differential, pulse interval encoding (PIE), bidirectional space encoding (FMO), Miller, and differential encoding. In simple terms, different pulse signals are used to represent 0 and 1.

[0083] In some scenarios, based on the energy source and usage of the zero-power terminal, the zero-power terminal can be divided into passive zero-power terminals, semi-passive zero-power terminals and active zero-power terminals.

[0084] Passive zero-power terminal

[0085] Zero-power terminals do not require internal batteries. When they approach network devices (such as RFID readers), they are within the near-field radiation generated by the network device's antenna. Consequently, electromagnetic induction generates an induced current in the terminal's antenna, which drives the terminal's low-power chip circuitry. This enables forward link signal demodulation and reverse link signal modulation. For backscatter links, the zero-power terminal uses backscattering to transmit signals.

[0086] It can be seen that the passive zero-power terminal does not require a built-in battery to drive either the forward link or the reverse link, and is a true zero-power terminal.

[0087] Passive zero-power terminals do not require batteries, and the RF circuit and baseband circuit are very simple. For example, they do not require low-noise amplifiers (LNAs), power amplifiers (PAs), crystal oscillators, analog-to-digital converters (ADCs), and other devices. Therefore, they have many advantages such as small size, light weight, very low price, and long service life.

[0088] Semi-passive zero-power terminal

[0089] Semi-passive zero-power terminals do not have conventional batteries themselves, but instead use RF energy harvesting modules to harvest radio wave energy and store it in an energy storage unit (such as a capacitor). This energy is then used to power the low-power chip circuitry in the zero-power terminal, performing tasks such as demodulating forward link signals and modulating reverse link signals. For backscatter links, the zero-power terminal uses backscattering to transmit signals.

[0090] It can be seen that the semi-passive zero-power terminal does not require a built-in battery to drive either the forward link or the reverse link. Although energy stored in capacitors is used in operation, the energy comes from the radio energy collected by the energy harvesting module. Therefore, it is also a true zero-power terminal.

[0091] Semi-passive zero-power consumption terminals inherit many advantages of passive zero-power consumption terminals, so they have many advantages such as small size, light weight, very low price, and long service life.

[0092] Active zero-power terminal

[0093] In some scenarios, zero-power terminals can also be active zero-power terminals, which can have built-in batteries. The batteries power the low-power chip circuits in the zero-power terminal, which perform tasks such as demodulating forward link signals and modulating reverse link signals. However, for backscatter links, zero-power terminals use backscattering to transmit signals. Therefore, the zero-power nature of these terminals lies primarily in the fact that reverse link signal transmission does not require the terminal's own power, but rather utilizes backscattering.

[0094] Active zero-power terminals use a built-in battery to power the RFID chip, increasing the tag's read and write distance and improving communication reliability. Therefore, they are suitable for scenarios with relatively high requirements for communication distance and read latency.

[0095] Received Signal Strength (RSS) positioning

[0096] RSS positioning technology is a method that uses the variation of signal strength with propagation distance to achieve positioning. Its core approach is to determine the target's location based on the signal strength received by multiple reference nodes from the same target source. RSS positioning technology is currently widely used for indoor positioning. Traditional RSS positioning technology, based on geometric measurement, first measures the signal strength (RSS) received by each monitoring node. It then reverse-calculates the propagation distance d between each node and the target based on a signal transmission attenuation model, thereby estimating the relative geographic location of the signal source to be located.

[0097] Cellular Passive IoT

[0098] As 5G industry applications expand, the types of connected objects and application scenarios will increase, placing higher demands on the price and power consumption of communication terminals. The application of battery-free, low-cost passive IoT devices has become a key technology for cellular IoT, expanding the types and number of terminals connected to 5G networks and truly realizing the interconnection of everything. Passive IoT devices can be used in cellular IoT based on existing zero-power devices.

[0099] Subcarrier modulation

[0100] Subcarrier modulation involves first modulating the signal onto carrier 1 (the subcarrier). For some reason, a second modulation is performed, and this modulation result is used to modulate another higher-frequency carrier 2. Subcarrier modulation is a modulation method commonly used in RFID systems.

[0101] In cellular networks, traditional terminal devices require battery power. The introduction of zero-power terminals into cellular networks requires a power supply signal from the base station or other sources, which is used to power the zero-power devices. In Figure 6, the zero-power terminal provides a trigger signal and energy via the downlink (DL) frequency. Information is fed back to the base station via backscattering on the uplink (UL) frequency. The timing and frequency of the backscatter can differ from the incident signal. The transmit frequency domain in Figure 6 produces symmetrical frequency-shifted reflections, and filtering and other techniques are used to capture only one of the frequencies.

[0102] In some embodiments, the signal may be reflected at a specific time through a reflection processing timing (delay) mechanism, that is, the time of backscattering may be controlled.

[0103] To facilitate understanding of the embodiments of the present application, the problems solved by the present application are described below.

[0104] Applying zero-power technology to cellular networks requires orderly coordination of multiple terminals to use different time-frequency resources. Taking the NR system as an example, cellular networks can flexibly configure resources of different frequencies. In the frequency division duplex (FDD) duplex mode, network equipment transmits signals on DL resources, and the corresponding terminals should transmit signals on UL resources. DL and UL are separated by frequency. On the UL, there are multiple terminals in the network equipment to reflect signals, and time-frequency resource indications for multiple terminals are required. How to enable different terminals to occupy different resources, such as different positions in the time domain, frequency domain, and even code domain, is a problem that needs to be solved.

[0105] Based on the above problems, this application proposes a zero-power backscatter communication solution. Different zero-power terminals use different resources, which can solve the problem of orderly and differentiated data transmission of a large number of different zero-power terminals in a cell, and ensure reliable data transmission.

[0106] In an embodiment of the present application, the energy supply signal in the cellular network and the signal for information transmission (trigger signal) can be two signals or one signal. These two signals can be sent in different frequency bands or at the same frequency point. The energy supply signal that can be sent continuously or intermittently in a certain frequency band is a continuous wave (CW), such as a sine wave. The energy supply signal and the trigger signal can both be sent by the base station of the cellular network, as shown in Figure 7. Alternatively, the energy supply signal is sent by a dedicated node, as shown in Figure 8. The zero-power terminal performs energy collection, and after obtaining energy, the zero-power terminal can perform corresponding signal reception, signal reflection, measurement and other functions.

[0107] This application mainly achieves the multiplexing of multiple terminals by scheduling the base station to receive data, reflect the time and frequency resources of the data and reflect the feedback control information, etc.

[0108] The technical solution of this application is described in detail below through specific embodiments.

[0109] FIG9 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application. As shown in FIG9 , the wireless communication method 200 may include at least part of the following contents:

[0110] S210: The network device sends a trigger signal; wherein the trigger signal carries identification information and resource indication information, the identification information being used to indicate whether the trigger signal is a signal for the terminal device, and the resource indication information being used to indicate resource information occupied by data associated with the trigger signal, and the terminal device obtaining energy through energy harvesting for communication, information collection, and processing;

[0111] S220: The terminal device receives the trigger signal.

[0112] In an embodiment of the present application, the terminal device obtains energy through energy harvesting for communication, information collection and processing. That is, before the network device communicates with the terminal device, it must first ensure that the terminal device receives radio waves for wireless power supply and obtains wireless energy through energy harvesting. In other words, the terminal device can be a zero-power terminal, and the embodiment of the present application can be applied to zero-power communication technology. It should be understood that the present application does not limit the specific manner in which the terminal device obtains energy through energy harvesting. As an example and not a limitation, the terminal device can obtain energy through wireless power supply methods such as wireless radio frequency signals, solar energy, pressure or temperature.

[0113] In an embodiment of the present application, the trigger signal received by the terminal device carries identification information and resource indication information, the identification information is used to indicate whether the trigger signal is a signal for the terminal device, and the resource indication information is used to indicate the resource information occupied by the data associated with the trigger signal. That is, different terminal devices correspond to different trigger signals, so that different terminal devices can use the resources indicated by the resource indication information in different trigger signals, which can achieve orderly and differentiated transmission of data of a large number of different zero-power terminals in the cell, and ensure reliable transmission of data. In other words, the present application overcomes the problem that data of different zero-power terminals cannot be transmitted in a differentiated manner in the existing zero-power communication technology, and solves the problem of orderly and differentiated transmission of data of a large number of different terminals in the cell. Through the embodiment of the present application, a terminal can effectively and simply use resources for zero-power communication.

[0114] In some embodiments, the trigger signal is used to trigger the terminal corresponding to the identification information it carries to send and receive data.

[0115] In some embodiments, the embodiments of the present application are not limited to data transmission, but can also be used in initial access, paging and other occasions.

[0116] In an embodiment of the present application, resource reuse of multiple terminals (such as zero-power terminals) is achieved by scheduling resource information of terminal devices (such as zero-power terminals) to receive data through network devices, and / or, resource information of terminal devices (such as zero-power terminals) to reflect data through network devices, and / or, resource information of terminal devices (such as zero-power terminals) to reflect feedback information through network devices.

[0117] In some embodiments, signals backscattered by different terminals occupy the same or different resources.

[0118] In some embodiments, after receiving the trigger signal, the terminal device determines whether the trigger signal is a signal directed to the terminal device based on the identification information carried by the trigger signal. Specifically, if it is determined that the trigger signal is not a signal directed to the terminal device, the terminal device ignores the trigger signal, or deletes or discards the trigger signal. If it is determined that the trigger signal is a signal directed to the terminal device, the terminal device may determine the resource information occupied by the data associated with the trigger signal based on the resource indication information carried by the trigger signal, and transmit and receive data on the corresponding resources.

[0119] In some embodiments, the trigger signal may be sent via broadcast, groupcast, or multicast.

[0120] In the embodiments of the present application, the "backscattered signal" may also be referred to as a "reflected signal" or a "reflected signal", which is not limited in the present application.

[0121] In some embodiments, the embodiments of the present application may also implement the same functions as the trigger signal through other signals, such as data transmission signals, resource indication signals, power supply signals, etc., which are not limited in this application.

[0122] In some embodiments, the trigger signal is a power supply signal of the terminal device, that is, the power supply and trigger can be integrated and sent as one node, or combined into one signal.

[0123] In some embodiments, the terminal device obtains energy through a power supply signal continuously transmitted by the network device. Specifically, for example, the continuously transmitted power supply signal is a constant amplitude continuous wave signal or an energy-carrying signal of another waveform. In some embodiments, a power supply signal provided by a third-party device can also be used as the power supply signal for the terminal device.

[0124] In some embodiments, the identification information is a terminal-specific identification. Optionally, the terminal device reports its specific identification during the registration process, or the terminal device reports its specific identification in advance through other means. Specifically, distinguishing between user devices receiving data and reflected data based on the terminal-specific identification can greatly avoid interference between multiple users.

[0125] For example, when the identification information carried in the trigger signal is the inherent identification of the terminal device, the trigger signal is a signal for the terminal device; otherwise, the trigger signal is not a signal for the terminal device.

[0126] In some embodiments, the terminal inherent identifier may also be referred to as a terminal permanent identifier or a terminal permanent identity identifier.

[0127] In some embodiments, the identification information is the terminal identifier registered with the network. Specifically, the identification information may be a temporary terminal identifier assigned by the network during the registration process. Specifically, distinguishing between user devices receiving data and reflecting data based on the terminal identifier registered with the network can significantly reduce interference between multiple users.

[0128] For example, when the identification information carried in the trigger signal is the identification of the terminal device registered in the network, the trigger signal is a signal for the terminal device; otherwise, the trigger signal is not a signal for the terminal device.

[0129] In some embodiments, the embodiments of the present application can also be used for data transmission processing in a cellular network, and terminals for transmitting data can be distinguished based on identification information.

[0130] In some embodiments, the data associated with the trigger signal includes at least one of the following: downlink data, uplink data, and sidelink data. That is, the trigger signal may trigger the terminal device to receive downlink data, the trigger signal may trigger the terminal device to send downlink data via backscatter, the trigger signal may trigger the terminal device to send sidelink data via backscatter, or a combination thereof.

[0131] In some embodiments, the resources indicated by the resource indication information include at least one of the following: time domain resources, frequency domain resources, code domain resources, and spatial domain resources. Optionally, the frequency domain resources occupy at least one carrier in the frequency domain, or the frequency domain resources occupy at least one subcarrier in the frequency domain. That is, the resources indicated by the resource indication information may occupy at least one carrier or at least one subcarrier in the frequency domain, and each carrier or subcarrier is divided into multiple slices in the time domain. For example, the resources indicated by the resource indication information include time domain resources and frequency domain resources. When the data associated with the trigger signal is downlink (DL) data, the resources indicated by the resource indication information may be as shown in FIG10 ; when the data associated with the trigger signal is uplink (UL) data, the resources indicated by the resource indication information may be as shown in FIG11 .

[0132] The embodiment of the present application can reuse the time domain structure of users and provide certain timing control to coordinate the time domain structure of uplink and downlink data, ensuring that the terminal and the network can process information in a timely manner.

[0133] In some embodiments, the resource indication information includes at least an offset value relative to a reference resource position. Specifically, for example, the reference resource position may be configured by a network device, or the reference resource position may be agreed upon by a protocol. Specifically, the terminal device may determine the resource information occupied by the data associated with the trigger signal based on the reference resource position and the offset value relative to the reference resource position. Optionally, the offset value relative to the reference resource position may be a time domain offset value, a frequency domain offset value, a code domain offset value, a spatial domain offset value, or a combination thereof, which is not limited in this application.

[0134] In some embodiments, the resource indication information includes at least an offset value based on the resource position occupied by the trigger signal. Specifically, the terminal device can determine the resource information occupied by the data associated with the trigger signal based on the resource position occupied by the trigger signal and the offset value based on the resource position occupied by the trigger signal. Optionally, the offset value based on the resource position occupied by the trigger signal can be a time domain offset value, a frequency domain offset value, a code domain offset value, a spatial domain offset value, or a combination thereof, which is not limited in this application.

[0135] In some embodiments, the trigger signal carries the identification information and the resource indication information in one of the following modulation modes:

[0136] Amplitude modulation, phase modulation, frequency modulation.

[0137] In other words, the network device can use one of the following modulation methods to make the trigger signal carry the identification information and resource indication information:

[0138] Amplitude modulation, phase modulation, frequency modulation.

[0139] For example, amplitude modulation (using direct high and low level encoding) can be shown in FIG12 .

[0140] In some embodiments, the trigger signal also carries at least one of the following information corresponding to the data associated with the trigger signal:

[0141] Modulation order, modulation method, coding rate, coding method, number of data bits.

[0142] For example, the encoding method may be a convolutional code, a Reed-muller code, or a Polar code. Specifically, the encoding method may also be implicitly obtained from other parameters (such as payload size and number of data bits) (for example, the difference between the payload size and the number of data bits).

[0143] Optionally, the trigger signal carries information corresponding to the data associated with the trigger signal through one of the following modulation modes:

[0144] Amplitude modulation, phase modulation, frequency modulation.

[0145] Specifically, the terminal device may decode or encode data based on information corresponding to the data associated with the trigger signal.

[0146] In some embodiments, when the identification information indicates that the trigger signal is a signal for the terminal device, the terminal device determines the resource information occupied by the data associated with the trigger signal based on the resource indication information.

[0147] In some embodiments, when the data associated with the trigger signal is downlink data, the terminal device receives (decodes and demodulates) the data associated with the trigger signal according to the resource information occupied by the data associated with the trigger signal.

[0148] In some embodiments, when the data associated with the trigger signal is downlink data, the resource indication information is also used to indicate the resource information occupied by the feedback information corresponding to the data associated with the trigger signal. Specifically, the terminal device determines the resource information occupied by the feedback information corresponding to the data associated with the trigger signal based on the resource indication information; the terminal device sends a first backscatter signal based on the resource information occupied by the feedback information corresponding to the data associated with the trigger signal, wherein the first backscatter signal carries the feedback information corresponding to the data associated with the trigger signal. Specifically, the terminal device response feedback method is used to reflect whether the downlink data is correctly received, or to reflect the uplink data, so as to ensure the reliable transmission of uplink and downlink data.

[0149] In some embodiments, the first backscatter signal carries feedback information corresponding to the data associated with the trigger signal through one of the following modulation modes:

[0150] Amplitude modulation, phase modulation, frequency modulation.

[0151] For example, when the data associated with the trigger signal is downlink data, that is, the trigger signal is used to trigger or instruct the terminal device to receive downlink data, as shown in Figure 13, the terminal device decodes the trigger signal and obtains the identification information and resource indication information carried by the trigger signal. When it is determined based on the identification information that the trigger signal is a signal for the terminal device, the terminal device decodes the downlink data according to the resources indicated by the resource indication information. Optionally, when the data decoding is successful, the terminal device feeds back an affirmative acknowledgment (ACK) via backscattering; when the data decoding fails or is not decoded, the terminal device feeds back a negative acknowledgment (NACK) via backscattering.

[0152] In some embodiments, when the data associated with the trigger signal is uplink data or sidelink data, the terminal device sends a second backscatter signal according to the resource information occupied by the data associated with the trigger signal, wherein the second backscatter signal carries the data associated with the trigger signal.

[0153] In some embodiments, the modulation mode used by the data associated with the trigger signal includes one of the following:

[0154] Amplitude modulation, phase modulation, frequency modulation.

[0155] For example, when the data associated with the trigger signal is uplink data, that is, the trigger signal is used to request or instruct the terminal device to send uplink data, as shown in Figure 14, the terminal device decodes the trigger signal and obtains the identification information and resource indication information carried by the trigger signal. When it is determined based on the identification information that the trigger signal is a signal for the terminal device, the terminal device sends the uplink data by backscattering according to the resources indicated by the resource indication information. Optionally, when the uplink data decoding is successful, the network device feeds back ACK; when the uplink data decoding fails or is not decoded, the network device feeds back NACK.

[0156] Therefore, in an embodiment of the present application, the trigger signal received by the terminal device carries identification information and resource indication information. The identification information is used to indicate whether the trigger signal is a signal for the terminal device, and the resource indication information is used to indicate the resource information occupied by the data associated with the trigger signal. In other words, different terminal devices correspond to different trigger signals, and thus different terminal devices can use the resources indicated by the resource indication information in different trigger signals. This can achieve orderly and differentiated transmission of data from a large number of different zero-power terminals in a cell, ensuring reliable data transmission.

[0157] The above text, in combination with Figures 9 to 14, describes in detail the method embodiment of the present application. The following text, in combination with Figures 15 to 19, describes in detail the device embodiment of the present application. It should be understood that the device embodiment and the method embodiment correspond to each other, and similar descriptions can refer to the method embodiment.

[0158] FIG15 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application. As shown in FIG15 , the terminal device 300 includes:

[0159] The communication unit 310 is configured to receive a trigger signal;

[0160] Among them, the trigger signal carries identification information and resource indication information. The identification information is used to indicate whether the trigger signal is a signal for the terminal device, and the resource indication information is used to indicate the resource information occupied by the data associated with the trigger signal. The terminal device obtains energy through energy collection for communication, information collection and processing.

[0161] In some embodiments, the resource indication information includes at least an offset value relative to a reference resource location, or the resource indication information includes at least an offset value based on a resource location occupied by the trigger signal.

[0162] In some embodiments, the identification information is an inherent identification of the terminal, or the identification information is an identification of the terminal registered in the network.

[0163] In some embodiments, the resources indicated by the resource indication information include at least one of the following: time domain resources, frequency domain resources, code domain resources, and space domain resources.

[0164] In some embodiments, the frequency domain resource occupies at least one carrier in the frequency domain, or the frequency domain resource occupies at least one subcarrier in the frequency domain.

[0165] In some embodiments, the data associated with the trigger signal includes at least one of the following: downlink data, uplink data, and sidelink data.

[0166] In some embodiments, the trigger signal carries the identification information and the resource indication information in one of the following modulation modes:

[0167] Amplitude modulation, phase modulation, frequency modulation.

[0168] In some embodiments, the trigger signal also carries at least one of the following information corresponding to the data associated with the trigger signal:

[0169] Modulation order, modulation method, coding rate, coding method, number of data bits.

[0170] In some embodiments, when the identification information indicates that the trigger signal is a signal for the terminal device, the terminal device 300 further includes: a processing unit 320;

[0171] The processing unit 320 is configured to determine resource information occupied by data associated with the trigger signal according to the resource indication information.

[0172] In some embodiments, the data associated with the trigger signal is downlink data, and the terminal device 300 further includes: a processing unit 320;

[0173] The processing unit 320 is configured to receive data associated with the trigger signal according to information about resources occupied by the data associated with the trigger signal.

[0174] In some embodiments, the resource indication information is further used to indicate resource information occupied by feedback information corresponding to the data associated with the trigger signal, and the processing unit 320 is further used to determine the resource information occupied by the feedback information corresponding to the data associated with the trigger signal based on the resource indication information;

[0175] The processing unit 320 is further configured to send a first backscatter signal according to resource information occupied by feedback information corresponding to data associated with the trigger signal, wherein the first backscatter signal carries feedback information corresponding to the data associated with the trigger signal.

[0176] In some embodiments, the first backscatter signal carries feedback information corresponding to the data associated with the trigger signal through one of the following modulation modes:

[0177] Amplitude modulation, phase modulation, frequency modulation.

[0178] In some embodiments, the data associated with the trigger signal is uplink data or sidelink data, and the terminal device 300 further includes: a processing unit 320;

[0179] The processing unit 320 is further configured to send a second backscatter signal according to information about resources occupied by the data associated with the trigger signal, wherein the second backscatter signal carries the data associated with the trigger signal.

[0180] In some embodiments, the modulation mode used by the data associated with the trigger signal includes one of the following:

[0181] Amplitude modulation, phase modulation, frequency modulation.

[0182] In some embodiments, the trigger signal is a power supply signal of the terminal device.

[0183] In some embodiments, the terminal device 300 further includes: a processing unit 320;

[0184] The processing unit 320 is configured to obtain energy through energy supply signals continuously sent by network devices.

[0185] In some embodiments, the continuously transmitted energy supply signal is a constant amplitude continuous wave signal.

[0186] In some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip. The processing unit may be one or more processors.

[0187] It should be understood that the terminal device 300 according to the embodiment of the present application may correspond to the terminal device in the embodiment of the method of the present application, and the above-mentioned and other operations and / or functions of each unit in the terminal device 300 are respectively for realizing the corresponding processes of the terminal device in the method 200 shown in Figure 9. For the sake of brevity, they will not be repeated here.

[0188] FIG16 shows a schematic block diagram of a network device 400 according to an embodiment of the present application. As shown in FIG16 , the network device 400 includes:

[0189] Communication unit 410, configured to send a trigger signal;

[0190] Among them, the trigger signal carries identification information and resource indication information. The identification information is used to indicate whether the trigger signal is a signal for the terminal device, and the resource indication information is used to indicate the resource information occupied by the data associated with the trigger signal. The terminal device obtains energy through energy collection for communication, information collection and processing.

[0191] In some embodiments, the resource indication information includes at least an offset value relative to a reference resource location, or the resource indication information includes at least an offset value based on a resource location occupied by the trigger signal.

[0192] In some embodiments, the identification information is an inherent identification of the terminal, or the identification information is an identification of the terminal registered in the network.

[0193] In some embodiments, the resources indicated by the resource indication information include at least one of the following: time domain resources, frequency domain resources, code domain resources, and space domain resources.

[0194] In some embodiments, the frequency domain resource occupies at least one carrier in the frequency domain, or the frequency domain resource occupies at least one subcarrier in the frequency domain.

[0195] In some embodiments, the data associated with the trigger signal includes at least one of the following: downlink data, uplink data, and sidelink data.

[0196] In some embodiments, the trigger signal carries the identification information and the resource indication information in one of the following modulation modes:

[0197] Amplitude modulation, phase modulation, frequency modulation.

[0198] In some embodiments, the trigger signal also carries at least one of the following information corresponding to the data associated with the trigger signal:

[0199] Modulation order, modulation method, coding rate, coding method, number of data bits.

[0200] In some embodiments, when the identification information indicates that the trigger signal is a signal for the terminal device, the resource indication information is used by the terminal device to determine resource information occupied by data associated with the trigger signal.

[0201] In some embodiments, the data associated with the trigger signal is downlink data, and the resource information occupied by the data associated with the trigger signal is used by the terminal device to receive the data associated with the trigger signal.

[0202] In some embodiments, the resource indication information is also used to indicate the resource information occupied by the feedback information corresponding to the data associated with the trigger signal, wherein the resource information occupied by the feedback information corresponding to the data associated with the trigger signal is used by the terminal device to send a first backscatter signal, and the first backscatter signal carries the feedback information corresponding to the data associated with the trigger signal.

[0203] In some embodiments, the first backscatter signal carries feedback information corresponding to the data associated with the trigger signal through one of the following modulation modes:

[0204] Amplitude modulation, phase modulation, frequency modulation.

[0205] In some embodiments, the data associated with the trigger signal is uplink data or sidelink data, wherein the resource information occupied by the data associated with the trigger signal is used by the terminal device to send a second backscatter signal, and the second backscatter signal carries the data associated with the trigger signal.

[0206] In some embodiments, the modulation mode used by the data associated with the trigger signal includes one of the following:

[0207] Amplitude modulation, phase modulation, frequency modulation.

[0208] In some embodiments, the trigger signal is a power supply signal of the terminal device.

[0209] In some embodiments, the communication unit 410 is further configured to power the terminal device by continuously sending power supply signals.

[0210] In some embodiments, the continuously transmitted energy supply signal is a constant amplitude continuous wave signal.

[0211] In some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip.

[0212] It should be understood that the network device 400 according to the embodiment of the present application may correspond to the network device in the embodiment of the method of the present application, and the above-mentioned and other operations and / or functions of each unit in the network device 400 are respectively for implementing the corresponding processes of the network device in the method 200 shown in Figure 9. For the sake of brevity, they will not be repeated here.

[0213] Figure 17 is a schematic structural diagram of a communication device 500 provided in an embodiment of the present application. The communication device 500 shown in Figure 17 includes a processor 510, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0214] In some embodiments, as shown in FIG17 , the communication device 500 may further include a memory 520. The processor 510 may call and execute a computer program from the memory 520 to implement the method in the embodiment of the present application.

[0215] The memory 520 may be a separate device independent of the processor 510 , or may be integrated into the processor 510 .

[0216] In some embodiments, as shown in FIG17 , the communication device 500 may further include a transceiver 530 , and the processor 510 may control the transceiver 530 to communicate with other devices. Specifically, the transceiver 530 may send information or data to other devices, or receive information or data sent by other devices.

[0217] The transceiver 530 may include a transmitter and a receiver. The transceiver 530 may further include an antenna, and the number of antennas may be one or more.

[0218] In some embodiments, the communication device 500 may specifically be a network device of an embodiment of the present application, and the communication device 500 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0219] In some embodiments, the communication device 500 may specifically be a terminal device of an embodiment of the present application, and the communication device 500 may implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0220] Figure 18 is a schematic structural diagram of an apparatus according to an embodiment of the present application. The apparatus 600 shown in Figure 18 includes a processor 610, which can call and execute a computer program from a memory to implement the method according to the embodiment of the present application.

[0221] In some embodiments, as shown in FIG18 , the apparatus 600 may further include a memory 620. The processor 610 may call and execute a computer program from the memory 620 to implement the method in the embodiment of the present application.

[0222] The memory 620 may be a separate device independent of the processor 610 , or may be integrated into the processor 610 .

[0223] In some embodiments, the apparatus 600 may further include an input interface 630. The processor 610 may control the input interface 630 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0224] In some embodiments, the apparatus 600 may further include an output interface 640. The processor 610 may control the output interface 640 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0225] In some embodiments, the device can be applied to the network equipment in the embodiments of the present application, and the device can implement the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0226] In some embodiments, the apparatus can be applied to the terminal device in the embodiments of the present application, and the apparatus can implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0227] In some embodiments, the device mentioned in the embodiments of the present application may also be a chip, such as a system-on-chip, a system-on-chip, a chip system, or a system-on-chip chip.

[0228] FIG19 is a schematic block diagram of a communication system 700 provided in an embodiment of the present application. As shown in FIG19 , the communication system 700 includes a terminal device 710 and a network device 720 .

[0229] Among them, the terminal device 710 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 720 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they will not be repeated here.

[0230] It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by hardware integrated logic circuits in the processor or software instructions. The above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly implemented as a hardware decoding processor, or can be implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0231] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0232] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0233] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0234] In some embodiments, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0235] In some embodiments, the computer-readable storage medium can be applied to the terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0236] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0237] In some embodiments, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0238] In some embodiments, the computer program product can be applied to the terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0239] The embodiment of the present application also provides a computer program.

[0240] In some embodiments, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0241] In some embodiments, the computer program can be applied to the terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0242] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0243] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0244] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0245] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0246] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0247] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. In view of this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0248] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A wireless communication method, characterized in that: include: The terminal device receives the trigger signal; In which, the trigger signal carries identification information and resource indication information, the identification information is used to indicate whether the trigger signal is a signal for the terminal device, and the resource indication information is used to indicate the resource information occupied by the data associated with the trigger signal. The terminal device obtains energy through energy collection for communication, information collection and processing.

2. The method according to claim 1, wherein The resource indication information at least includes an offset value relative to a reference resource position, or the resource indication information at least includes an offset value based on a resource position occupied by the trigger signal.

3. The method according to claim 1 or 2, wherein: The identification information is an inherent identification of the terminal, or the identification information is an identification of the terminal registered in the network.

4. The method according to any one of claims 1 to 3, characterized in that The resources indicated by the resource indication information include at least one of the following: time domain resources, frequency domain resources, code domain resources, and space domain resources.

5. The method according to claim 4, wherein The frequency domain resources occupy at least one carrier in the frequency domain, or the frequency domain resources occupy at least one subcarrier in the frequency domain.

6. The method according to any one of claims 1 to 5, characterized in that The data associated with the trigger signal includes at least one of the following: downlink data, uplink data, and sidelink data.

7. The method according to any one of claims 1 to 6, characterized in that The trigger signal carries the identification information and the resource indication information in one of the following modulation modes: Amplitude modulation, phase modulation, frequency modulation.

8. The method according to any one of claims 1 to 7, characterized in that The trigger signal also carries at least one of the following information corresponding to the data associated with the trigger signal: Modulation order, modulation method, coding rate, coding method, number of data bits.

9. The method according to any one of claims 1 to 8, characterized in that In a case where the identification information indicates that the trigger signal is a signal for the terminal device, the method further includes: The terminal device determines resource information occupied by the data associated with the trigger signal based on the resource indication information.

10. The method according to claim 9, wherein The data associated with the trigger signal is downlink data, and the method further includes: The terminal device receives the data associated with the trigger signal according to the resource information occupied by the data associated with the trigger signal.

11. The method according to claim 10, wherein The resource indication information is further used to indicate resource information occupied by feedback information corresponding to data associated with the trigger signal. The method further includes: The terminal device determines, according to the resource indication information, resource information occupied by the feedback information corresponding to the data associated with the trigger signal; The terminal device sends a first backscatter signal according to the resource information occupied by the feedback information corresponding to the data associated with the trigger signal, wherein the first backscatter signal carries the feedback information corresponding to the data associated with the trigger signal.

12. The method according to claim 11, wherein The first backscatter signal carries feedback information corresponding to the data associated with the trigger signal through one of the following modulation modes: Amplitude modulation, phase modulation, frequency modulation.

13. The method according to claim 9, wherein The data associated with the trigger signal is uplink data or sidelink data, and the method further includes: The terminal device sends a second backscatter signal according to the resource information occupied by the data associated with the trigger signal, wherein the second backscatter signal carries the data associated with the trigger signal.

14. The method according to any one of claims 10 to 13, characterized in that The modulation mode used by the data associated with the trigger signal includes one of the following: Amplitude modulation, phase modulation, frequency modulation.

15. The method according to any one of claims 1 to 14, characterized in that The trigger signal is a power supply signal of the terminal device.

16. The method according to any one of claims 1 to 14, characterized in that The method further comprises: The terminal device obtains energy through the energy supply signal continuously sent by the network device.

17. The method according to claim 16, wherein The continuously transmitted energy supply signal is a constant amplitude continuous wave signal.

18. A wireless communication method, characterized in that: include: The network device sends a trigger signal; Among them, the trigger signal carries identification information and resource indication information, the identification information is used to indicate whether the trigger signal is a signal for the terminal device, and the resource indication information is used to indicate the resource information occupied by the data associated with the trigger signal. The terminal device obtains energy through energy collection for communication, information collection and processing.

19. The method according to claim 18, wherein The resource indication information at least includes an offset value relative to a reference resource position, or the resource indication information at least includes an offset value based on a resource position occupied by the trigger signal.

20. The method according to claim 18 or 19, wherein The identification information is an inherent identification of the terminal, or the identification information is an identification of the terminal registered in the network.

21. The method according to any one of claims 18 to 20, characterized in that The resources indicated by the resource indication information include at least one of the following: time domain resources, frequency domain resources, code domain resources, and space domain resources.

22. The method according to claim 21, wherein The frequency domain resources occupy at least one carrier in the frequency domain, or the frequency domain resources occupy at least one subcarrier in the frequency domain.

23. The method according to any one of claims 18 to 22, characterized in that The data associated with the trigger signal includes at least one of the following: downlink data, uplink data, and sidelink data.

24. The method according to any one of claims 18 to 23, wherein The trigger signal carries the identification information and the resource indication information in one of the following modulation modes: Amplitude modulation, phase modulation, frequency modulation.

25. The method according to any one of claims 18 to 24, characterized in that The trigger signal also carries at least one of the following information corresponding to the data associated with the trigger signal: Modulation order, modulation method, coding rate, coding method, number of data bits.

26. The method according to any one of claims 18 to 25, characterized in that In a case where the identification information indicates that the trigger signal is a signal for the terminal device, the resource indication information is used by the terminal device to determine resource information occupied by data associated with the trigger signal.

27. The method according to claim 26, wherein The data associated with the trigger signal is downlink data, and the resource information occupied by the data associated with the trigger signal is used by the terminal device to receive the data associated with the trigger signal.

28. The method of claim 27, wherein: The resource indication information is also used to indicate the resource information occupied by the feedback information corresponding to the data associated with the trigger signal, wherein the resource information occupied by the feedback information corresponding to the data associated with the trigger signal is used by the terminal device to send a first backscatter signal, and the first backscatter signal carries the feedback information corresponding to the data associated with the trigger signal.

29. The method of claim 28, wherein The first backscatter signal carries feedback information corresponding to the data associated with the trigger signal through one of the following modulation modes: Amplitude modulation, phase modulation, frequency modulation.

30. The method of claim 26, wherein: The data associated with the trigger signal is uplink data or sidelink data, wherein the resource information occupied by the data associated with the trigger signal is used by the terminal device to send a second backscatter signal, and the second backscatter signal carries the data associated with the trigger signal.

31. The method according to any one of claims 27 to 30, wherein The modulation mode used by the data associated with the trigger signal includes one of the following: Amplitude modulation, phase modulation, frequency modulation.

32. The method according to any one of claims 18 to 31, wherein The trigger signal is a power supply signal of the terminal device.

33. The method according to any one of claims 18 to 31, wherein The method further comprises: The network device supplies power to the terminal device by continuously sending power supply signals.

34. The method of claim 33, wherein: The continuously transmitted energy supply signal is a constant amplitude continuous wave signal.

35. A terminal device, characterized in that: include: A communication unit, configured to receive a trigger signal; In which, the trigger signal carries identification information and resource indication information, the identification information is used to indicate whether the trigger signal is a signal for the terminal device, and the resource indication information is used to indicate the resource information occupied by the data associated with the trigger signal. The terminal device obtains energy through energy collection for communication, information collection and processing.

36. A network device, characterized in that: include: A communication unit, configured to send a trigger signal; Among them, the trigger signal carries identification information and resource indication information, the identification information is used to indicate whether the trigger signal is a signal for the terminal device, and the resource indication information is used to indicate the resource information occupied by the data associated with the trigger signal. The terminal device obtains energy through energy collection for communication, information collection and processing.

37. A terminal device, characterized in that: include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory, so that the terminal device executes the method according to any one of claims 1 to 17.

38. A network device, characterized in that: include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory, so that the network device executes the method according to any one of claims 18 to 34.

39. A chip, characterized in that: include: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 1 to 17.

40. A chip, characterized in that: include: A processor, configured to call and execute a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 18 to 34.

41. A computer-readable storage medium, characterized in that Used to store a computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1 to 17.

42. A computer-readable storage medium, characterized in that Used to store a computer program, the computer program causing a computer to execute the method according to any one of claims 18 to 34.

43. A computer program product, characterized in that The method comprises computer program instructions for causing a computer to execute the method according to any one of claims 1 to 17.

44. A computer program product, characterized in that The method comprises computer program instructions for causing a computer to perform the method as claimed in any one of claims 18 to 34.

45. A computer program, characterized in that The computer program causes a computer to execute the method according to any one of claims 1 to 17.

46. ​​A computer program, characterized in that The computer program causes a computer to execute the method according to any one of claims 18 to 34.

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