WO2023272442A1 - Procédé de communication sans fil, dispositif terminal et dispositif de réseau - Google Patents

Procédé de communication sans fil, dispositif terminal et dispositif de réseau Download PDF

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Publication number
WO2023272442A1
WO2023272442A1 PCT/CN2021/102786 CN2021102786W WO2023272442A1 WO 2023272442 A1 WO2023272442 A1 WO 2023272442A1 CN 2021102786 W CN2021102786 W CN 2021102786W WO 2023272442 A1 WO2023272442 A1 WO 2023272442A1
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Prior art keywords
signal
terminal
network device
modulation
modulation mode
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PCT/CN2021/102786
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English (en)
Chinese (zh)
Inventor
贺传峰
徐伟杰
崔胜江
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Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN202180094396.9A priority Critical patent/CN116918262A/zh
Priority to PCT/CN2021/102786 priority patent/WO2023272442A1/fr
Publication of WO2023272442A1 publication Critical patent/WO2023272442A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits

Definitions

  • the embodiments of the present application relate to the communication field, and in particular to a wireless communication method, a terminal device, and a network device.
  • a typical zero-power device is a tag in Radio Frequency Identification (RFID) technology.
  • RFID Radio Frequency Identification
  • the tag passes the unmodulated signal sent by the reader
  • the carrier signal that is, the energy supply signal
  • the carrier signal is modulated to carry information and send it to the reader.
  • the zero-power device When the zero-power device is applied in the cellular passive Internet of Things, the zero-power device can perform energy harvesting and backscattering through the energy supply signal sent by the base station to realize information transmission.
  • the energy supply signal sent by the base station is not always an unmodulated carrier signal. It will often be modulated by the information that the base station needs to send. In this case, how to send information to the base station from a zero-power consumption terminal is an urgent problem The problem.
  • the present application provides a wireless communication method, a terminal device, and a network device, which are beneficial to reducing the time limit for the terminal device to perform backscatter communication, and reducing the communication delay of the terminal device.
  • a wireless communication method including: a first terminal receiving a first signal sent by a network device, the first signal being a modulated signal; the first terminal receiving the first signal performing modulation to obtain a second signal; the first terminal sends the second signal to the network device.
  • a wireless communication method including: a first terminal receives a first signal sent by a network device; the first terminal determines whether the first signal is modulated according to whether the first signal is modulated. A target modulation mode used for modulation; the first terminal modulates the first signal to obtain a second signal; the first terminal backscatters the second signal to the network device.
  • a wireless communication method including: a network device sends a first signal to a first terminal, and the first signal is a modulated signal; the network device receives the first signal sent by the first terminal A second signal, where the second signal is obtained by the first terminal modulating the first signal.
  • a terminal device configured to execute the method in any one of the above-mentioned first aspect to the second aspect or in each implementation manner thereof.
  • the terminal device includes a functional module configured to execute any one of the above first aspect to the second aspect or the method in each implementation manner thereof.
  • a network device configured to execute the method in the above third aspect or various implementation manners thereof.
  • the network device includes a functional module for executing the method in the above third aspect or each implementation manner thereof.
  • a terminal device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to invoke and run the computer program stored in the memory to execute any one of the above first to second aspects or the method in each implementation manner.
  • a network device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the above third aspect or its various implementations.
  • a chip for implementing any one of the above first to third aspects or the method in each implementation manner thereof.
  • the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the device executes any one of the above-mentioned first to third aspects or any of the implementations thereof. method.
  • a computer-readable storage medium for storing a computer program, and the computer program causes a computer to execute any one of the above-mentioned first to third aspects or the method in each implementation manner thereof.
  • a computer program product including computer program instructions, the computer program instructions cause a computer to execute any one of the above first to third aspects or the method in each implementation manner.
  • a computer program which, when running on a computer, causes the computer to execute any one of the above first to third aspects or the method in each implementation manner thereof.
  • the first terminal can use the modulated signal sent by the network device to perform backscatter communication, so that the first terminal does not need to wait to receive the unmodulated signal before performing backscatter communication, which is beneficial to reduce the impact on the terminal
  • the time limit for the device to perform backscatter communication reduces the communication delay of the terminal device.
  • FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • Fig. 2 is a schematic diagram of a zero-power communication system according to an example of the present application.
  • Figure 3 is a schematic diagram of backscatter communication.
  • Figure 4 is a schematic diagram of energy harvesting.
  • Figure 5 is a circuit schematic diagram of resistive load modulation.
  • Fig. 6 is a schematic interaction diagram of a wireless communication method provided according to an embodiment of the present application.
  • Fig. 7 is a schematic interaction diagram of backscatter communication based on the embodiment of the present application.
  • Fig. 8 is a schematic interaction diagram of a wireless communication method according to an embodiment of the present application.
  • Fig. 9 is a schematic interaction diagram of a wireless communication method according to another embodiment of the present application.
  • Fig. 10 is a schematic interaction diagram of another wireless communication method provided according to an embodiment of the present application.
  • Fig. 11 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.
  • Fig. 12 is a schematic block diagram of another terminal device provided according to an embodiment of the present application.
  • Fig. 13 is a schematic block diagram of a network device provided according to an embodiment of the present application.
  • Fig. 14 is a schematic block diagram of a communication device provided according to an embodiment of the present application.
  • Fig. 15 is a schematic block diagram of a chip provided according to an embodiment of the present application.
  • Fig. 16 is a schematic block diagram of a communication system provided according to an embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced long term evolution
  • NR New Radio
  • NTN Non-Terrestrial Networks
  • UMTS Universal Mobile Telecommunications System
  • WLAN Wireless Local Area Networks
  • WiFi Wireless Fidelity
  • 5G fifth-generation communication
  • D2D Device to Device
  • M2M Machine to Machine
  • MTC Machine Type Communication
  • V2V Vehicle to Vehicle
  • V2X Vehicle to everything
  • the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, may also be applied to a dual connectivity (Dual Connectivity, DC) scenario, and may also be applied to an independent (Standalone, SA) deployment Web scene.
  • Carrier Aggregation, CA Carrier Aggregation
  • DC Dual Connectivity
  • SA independent deployment Web scene
  • the communication system in the embodiment of the present application may be applied to an unlicensed spectrum, where the unlicensed spectrum may also be considered as a shared spectrum; or, the communication system in the embodiment of the present application may also be applied to a licensed spectrum, where, Licensed spectrum can also be considered as non-shared spectrum.
  • the embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, wherein the terminal equipment may also be referred to as user equipment (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.
  • user equipment User Equipment, UE
  • access terminal user unit
  • user station mobile station
  • mobile station mobile station
  • remote station remote terminal
  • mobile device user terminal
  • terminal wireless communication device
  • wireless communication device user agent or user device
  • the network device may be a device for communicating with the mobile device, and the network device may be an access point (Access Point, AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA , or a base station (NodeB, NB) in WCDMA, or an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and an NR network
  • the network device may have a mobile feature, for example, the network device may be a mobile device.
  • the network equipment may be a satellite or a balloon station.
  • the satellite can be a low earth orbit (low earth orbit, LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous earth orbit (geosynchronous earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite. ) Satellite etc.
  • the network device may also be a base station installed in places such as land or water.
  • the network device may provide services for a cell, and the terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, a cell corresponding to a base station), the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell), and the small cell here may include: a metro cell (Metro cell), a micro cell (Micro cell), a pico cell ( Pico cell), Femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
  • the transmission resources for example, frequency domain resources, or spectrum resources
  • the cell may be a network device (
  • the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell)
  • the small cell here may include: a metro cell (Metro cell), a micro cell (Micro
  • the terminal device can be a station (STATION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, next-generation communication systems such as terminal devices in NR networks, or future Terminal equipment in the evolved Public Land Mobile Network (PLMN) network, terminal equipment in the cellular Internet of Things, terminal equipment in the cellular passive Internet of Things, etc.
  • PLMN Public Land Mobile Network
  • the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites) superior).
  • the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, or wireless terminal equipment in smart home.
  • a virtual reality (Virtual Reality, VR) terminal device an augmented reality (Augmented Reality, AR) terminal Equipment
  • wireless terminal equipment in industrial control wireless terminal equipment in self driving
  • wireless terminal equipment in remote medical wireless terminal equipment in smart grid
  • wireless terminal equipment in transportation safety wireless terminal equipment in smart city, or wireless terminal equipment in smart home.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, 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 clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device for communicating with a terminal device 120 (or called a communication terminal, terminal).
  • the network device 110 can provide communication coverage for a specific geographical area, and can communicate with terminal devices located in the coverage area.
  • FIG. 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. This application The embodiment does not limit this.
  • 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 this embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which is not limited in this embodiment of the present application.
  • a device with a communication function in the network/system in the embodiment of the present application may be referred to as a communication device.
  • the communication equipment may include a network equipment 110 and a terminal equipment 120 with communication functions.
  • the network equipment 110 and the terminal equipment 120 may be the specific equipment described above, and will not be repeated here.
  • the communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities and other network entities, which are not limited in this embodiment of the present application.
  • the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated, configuration and is configuration etc.
  • predefinition can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate related information in devices (for example, including terminal devices and network devices).
  • the implementation method is not limited.
  • pre-defined may refer to defined in the protocol.
  • the "protocol” may refer to a standard protocol in the communication field, for example, it may include the LTE protocol, the NR protocol, and related protocols applied in future communication systems, which is not limited in the present application.
  • a typical zero-power device is an RFID tag.
  • RFID technology is a technology that uses radio frequency signal spatial coupling to realize non-contact automatic transmission and identification of label information.
  • RFID tags are also called "radio frequency tags" or “electronic tags”.
  • the types of electronic tags classified according to different power supply methods may include active electronic tags, passive electronic tags and semi-passive electronic tags.
  • Active electronic tags also known as active electronic tags, means that the energy of the electronic tags is provided by the battery.
  • the battery, memory and antenna together constitute an active electronic tag, which is different from the passive radio frequency activation method. Set the frequency band to send information.
  • Passive electronic tags also known as passive electronic tags, do not support built-in batteries.
  • the tags When passive electronic tags are close to the reader, the tags are in the near-field range formed by the radiation of the reader antenna.
  • the electronic tag antenna generates an induced current through electromagnetic induction. , the induced current drives the chip circuit of the electronic label.
  • the chip circuit sends the identification information stored in the tag to the reader through the electronic tag antenna.
  • Semi-active electronic tags inherit the advantages of small size, light weight, low price and long service life of passive electronic tags.
  • the built-in battery supplies power to the RFID chip to increase the reading and writing distance of the tag and improve the reliability of communication.
  • the most basic RFID system includes electronic tags (TAG) and readers (Reader/Writer).
  • the electronic tag is composed of a coupling component and a chip.
  • the electronic tag may include an energy collection module, a backscatter communication module, a low-power computing module and a sensor module.
  • Each electronic tag has a unique electronic code, which is placed on the target to achieve the purpose of marking the target object.
  • the reader can not only read the information on the electronic tag, but also write the information on the electronic tag, and at the same time provide the electronic tag with the energy required for communication. as shown in picture 2.
  • After the electronic tag enters the electromagnetic field it receives the radio frequency signal sent by the reader.
  • the passive or semi-passive electronic tag can use the energy obtained from the electromagnetic field generated in the space to transmit the information stored in the electronic tag.
  • the reader reads the electronic The information transmitted by the tag and decode it to identify the electronic tag.
  • zero-power consumption communication or battery-free communication
  • key technologies in zero-power consumption communication are described below.
  • the zero-power consumption device receives the carrier signal sent by the backscatter reader, collects energy through the energy harvesting module, and then passes the low-power processing module (the The logic processing module) modulates the incoming wave signal and performs backscattering.
  • the terminal does not actively transmit signals, and realizes backscatter communication by modulating the incoming wave signal
  • the terminal does not rely on traditional active power amplifier transmitters, and uses low-power computing modules at the same time, which greatly reduces hardware complexity;
  • FIG. 4 is a schematic diagram of energy harvesting.
  • the energy harvesting module is used to realize the collection of space electromagnetic wave energy through electromagnetic induction, and then realize the driving of the load circuit (low power operation, sensor, etc.), thereby realizing battery-free communication.
  • Load modulation is a method often used by electronic tags to transmit data to readers. Load modulation adjusts the electrical parameters of the electronic tag oscillation circuit according to the beat of the data flow, so that the size and phase of the electronic tag impedance change accordingly, thus completing the modulation process.
  • Load modulation techniques mainly include resistive load modulation and capacitive load modulation.
  • FIG. 5 is a schematic diagram of resistive load modulation.
  • a resistor is connected in parallel with the load, which is called a load modulation resistor.
  • the resistor is turned on and off according to the clock of the data flow, and the on-off of the switch S is controlled by binary data code.
  • a capacitor is connected in parallel to the load, replacing the load modulating resistor in Figure 5 controlled by a binary data code.
  • RFID systems typically use one of the following encoding methods: reverse non-return-to-zero (NRZ) encoding, Manchester encoding, unipolar return-to-zero (Unipolar RZ) encoding, differential biphase (DBP) encoding, Miller coding and differential coding.
  • NRZ reverse non-return-to-zero
  • Manchester encoding Manchester encoding
  • unipolar return-to-zero Unipolar RZ
  • DBP differential biphase
  • Miller coding Miller coding
  • different pulse signals are used to represent 0 and 1.
  • backscatter communication means that the tag modulates the unmodulated carrier signal sent by the reader to send information to the reader.
  • the unmodulated carrier signal is a continuous wave (Continuous wave, CW), such as a sine wave.
  • CW Continuous wave
  • the amplitude or phase of the CW changes to carry information.
  • the modulation of the CW by the reader and the modulation of the CW by the tag do not occur at the same time, that is, the information interaction between the two occurs alternately in time. That is, the tag modulates the unmodulated carrier wave sent by the reader to carry the information to be sent.
  • the zero-power device when the zero-power device is applied in the cellular passive Internet of Things, the zero-power device can perform energy harvesting and backscattering through the energy supply signal sent by the base station. But the powering signal sent by the base station is not always an unmodulated carrier signal.
  • the energy supply signal sent by the base station serves the zero-power consumption equipment in the cell, and it is often modulated by the information that the base station needs to send. If the modulated energy supply signal cannot be used for backscatter communication of the zero-power consumption equipment, It will cause a large limitation on the backscatter communication of the zero-power device, for example, the zero-power device cannot transmit information with the base station at the same time. In this case, how the zero-power device sends information to the network device is an urgent problem to be solved.
  • FIG. 6 is a schematic interaction diagram of a wireless communication method 200 according to an embodiment of the present application. As shown in FIG. 6, the method 200 includes the following content:
  • the first terminal receives a first signal sent by a network device, where the first signal is a modulated signal;
  • the first terminal modulates the first signal to obtain a second signal
  • the first terminal sends the second signal to the network device.
  • the first terminal may communicate with the network device in a zero-power consumption communication manner.
  • the zero-power communication may include backscatter communication, or may also include other passive or semi-passive communication manners, to which the present application is not limited.
  • the first terminal is a zero-power consumption terminal, or other terminals that do not actively transmit signals, but use signals sent by network devices to carry information.
  • the power supply mode of the first terminal may be passive or semi-passive.
  • the zero-power consumption terminal may be based on the aforementioned RFID technology, or may also be based on other technologies for zero-power communication or low-power communication introduced in other related or subsequent standard evolutions.
  • the terminal The device communicates with the network device through backscatter communication as an example for illustration, but the application is not limited thereto.
  • the first terminal uses the signal modulated by the network device to perform backscatter communication to carry information to be sent.
  • the first signal may also be referred to as an energy supply signal, or an incoming wave signal, that is, the first signal may be used to supply energy to the first terminal, so that the first terminal supplies power to the network.
  • the device transmits backscattered signals to transfer information.
  • the network device may refer to a base station, or may also be a smart phone, an intelligent gateway, a charging station, a micro base station, and the like.
  • the first signal may be a low frequency signal, a medium frequency signal or a high frequency signal.
  • the first signal may be modulated by a signal such as a Zheng Xuan wave, a square wave, a triangle wave, a pulse, or a rectangular wave.
  • the first signal may be a continuous wave, or may also be a discontinuous wave.
  • the first signal may be any signal or channel, for example, Sounding Reference Signal (Sounding Reference Signal, SRS), Physical Random Access Channel (Physical Random Access Channel, PRACH), Physical Uplink Control Channel (Physical Uplink Control Channel, PUCCH), Physical Uplink Shared Channel (Physical Uplink Shared Channel, PUSCH), Physical Downlink Control Channel (Physical Downlink Control Channel, PDCCH), Physical Downlink Shared Channel (Physical Downlink Shared Channel, PDSCH), physical layer Broadcast channel (Physical Broadcast Channel, PBCH), etc.
  • Sounding Reference Signal Sounding Reference Signal
  • PRACH Physical Random Access Channel
  • PUCCH Physical Uplink Control Channel
  • PUCCH Physical Uplink Shared Channel
  • PUSCH Physical Uplink Shared Channel
  • PDCCH Physical Downlink Control Channel
  • Physical Downlink Shared Channel Physical Downlink Shared Channel
  • PDSCH Physical Downlink Shared Channel
  • PBCH Physical Broadcast Channel
  • the embodiments of the present application can be applied to a cellular Internet of Things system, such as a cellular passive Internet of Things system, or can also be applied to other scenarios where a terminal device sends information to a network device through zero-power communication or battery-free communication. This application is not limited thereto.
  • the first terminal may determine whether the first signal is a modulated signal according to the received first signal. For example, the first terminal may determine whether the first signal is a modulated signal according to at least one item of envelope information, frequency information, and phase information of the first signal.
  • the first terminal may detect envelope information of the first signal to determine whether the first signal is ASK modulated.
  • the first terminal may detect frequency information of the first signal to determine whether the first signal is FSK modulated.
  • the first terminal may detect phase information of the first signal to determine whether the first signal is PSK modulated.
  • the first terminal may also determine whether the first signal is a modulated signal according to the indication information of the network device, for example, the network device may indicate a certain time range to the first terminal Whether the signal sent in is modulated.
  • the modulation mode used by the first terminal to modulate the first signal needs to meet certain constraints. , or, certain constraints need to be satisfied between the modulation method used by the first terminal to modulate the first signal and the modulation method used by the network device to obtain the first signal, so that the first The second signal backscattered by the terminal can be correctly demodulated by the network device.
  • the first terminal may determine a target modulation method used by the first terminal to modulate the first signal according to a modulation method used by the network device to obtain the first signal.
  • the first terminal may modulate the first signal by using the target modulation mode, so as to carry information to be sent by the first terminal to the network device.
  • modulation methods in the embodiments of the present application include but are not limited to amplitude keying (ASK), frequency shift keying (FSK), phase shift keying (PSK), or other modulations introduced in standard evolution way, the present application is not limited to this.
  • ASK amplitude keying
  • FSK frequency shift keying
  • PSK phase shift keying
  • the first terminal may determine the second modulation method as the modulation method used to modulate the first signal Target modulation method. That is, the first terminal may use the second modulation mode to modulate the first signal to obtain the second signal.
  • the second modulation mode satisfies the following constraints: the network device can obtain the information carried in the second signal by demodulating the second signal based on the demodulation mode corresponding to the second modulation mode. information.
  • the second modulation scheme is different from the first modulation scheme.
  • the first modulation mode is a modulation mode not adopted by the first terminal, or a modulation mode not supported.
  • the first modulation method is associated with the second modulation method, and the association relationship between the first modulation method and the second modulation method may be predefined or configured by the network device .
  • the first terminal determines the target modulation method according to the modulation method used by the network device to obtain the first signal and the first association relationship.
  • the first association relationship may be an association relationship between a modulation method used by a network device and a modulation method used by a terminal device, or an association relationship between a modulation method used by a network device and a modulation method used by a zero-power consumption terminal, or, The correlation between the modulation method used by network equipment and the modulation method used for backscatter communication.
  • the first association relationship may be predefined, or may also be configured by the network device.
  • the modulation method used by the network device and the modulation method used by the terminal device may be in one-to-one correspondence, or may be one-to-many, or many-to-one. Applications are not limited to this.
  • Table 1 is an example of the first association relationship according to the present application.
  • Modulation used by network devices The modulation method used by the terminal equipment ASK PSK PSK ASK FSK ASK ASK FSK
  • the first modulation mode is ASK
  • the second modulation mode is PSK or FSK.
  • the first modulation scheme is PSK
  • the second modulation scheme is ASK
  • Fig. 7 shows that the network equipment adopts the ASK modulation mode to modulate the first signal, and the first terminal further modulates the first signal by using the FSK modulation mode to obtain the second signal, and sends the second signal to the network equipment schematic diagram.
  • the method 200 further includes:
  • the first terminal determines the modulation mode used by the network device to obtain the first signal.
  • Manner 1 The first terminal determines, according to the received first signal, the modulation mode used by the network device to obtain the first signal.
  • the first terminal may determine the modulation used by the network device to obtain the first signal according to at least one of envelope information, frequency information and phase information of the received first signal Way.
  • the first terminal may detect the envelope information of the first signal to determine whether the first signal is ASK modulated.
  • the first terminal may detect the frequency information of the first signal to determine whether the first signal is FSK modulated.
  • the first terminal may detect the phase information of the first signal to determine whether the first signal is PSK modulated.
  • the first terminal demodulates the first signal according to the demodulation modes corresponding to multiple modulation modes, and demodulates the first signal according to the demodulation modes corresponding to the multiple modulation modes.
  • the demodulation result of the signal determines the modulation mode used by the network device to obtain the first signal.
  • the first terminal may perform blind demodulation on the first signal, so as to determine a modulation mode corresponding to the first signal.
  • Mode 2 The first terminal determines the modulation mode used by the network device to obtain the first signal according to the first indication information sent by the network device, where the first indication information is used to indicate the The modulation method adopted by the network device.
  • the first indication information is received by the first terminal before receiving the first signal. That is, before sending the first signal, the network device may use the first indication information to indicate the modulation mode adopted by the signal to be sent subsequently.
  • the first indication information may also be used to indicate a time range corresponding to the modulation mode adopted by the network device, that is, the network device all adopts the modulation mode within this time range. Then, all signals received by the first terminal within this period of time can be considered as modulated by the network equipment using the modulation mode.
  • the modulation mode adopted by the network device for the signal carrying the first indication information may be a predefined modulation mode, or in other words, a default modulation mode.
  • the network device and the first terminal use a predefined modulation mode when communicating for the first time.
  • the first indication information may be sent by the network device and the first terminal during initial communication.
  • the initial communication may include that the first terminal enters the coverage area of the network device and communicates with the network device for the first time, or may also include that the first terminal interrupts and communicates with the network device. After the communication of the device, communicate with the network device again.
  • Mode 3 The first terminal determines that the network device modulates the first signal using a third modulation mode, and the third modulation mode is a predefined modulation mode.
  • the first terminal determines during initial communication that the first signal sent by the network device is modulated by using a predefined modulation manner.
  • the number of the predefined modulation modes may be one, or may also be multiple.
  • the third modulation method is designed as: a signal modulated by the third modulation method, and then a signal modulated by any modulation method supported by the first terminal and backscattered, the network All devices are capable of demodulating the backscattered signal.
  • this embodiment 1 may include the following steps:
  • the network device sends a first signal to the first terminal.
  • the first terminal determines the modulation mode used by the network device to obtain the first signal.
  • the first terminal may determine the modulation method used by the network device to obtain the first signal according to the foregoing method 1, method 2 or method 3.
  • the first terminal determines a target modulation method used by the first terminal to modulate the first signal according to the modulation method used by the network device to obtain the first signal.
  • the first terminal may determine to use an FSK modulation method or a PSK modulation method to modulate the first signal.
  • the first terminal modulates the first signal by using the target modulation mode to obtain a second signal.
  • the first terminal modulates the first signal by using the target modulation mode to obtain the second signal carrying information to be sent.
  • the first terminal sends the second signal to the network device.
  • the network device demodulates the second signal to obtain the to-be-sent information carried in the second signal.
  • the first terminal determines the target modulation mode used for modulating the first signal according to the second indication information of the network device.
  • the second indication information is used to indicate the modulation mode adopted by the first terminal and/or the time information of using the modulation mode.
  • the second indication information is used to indicate the modulation mode used by the first terminal to perform backscatter communication and/or the time information of using the modulation mode.
  • the time information of the modulation mode may include information about the starting use time and/or the use duration of the modulation mode. That is, the time period during which the first terminal uses the modulation mode may be determined according to the time information of the modulation mode. For example, the first terminal may use the modulation mode indicated by the second indication information to modulate the modulated signal sent by the network device within the time period corresponding to the modulation mode.
  • the method 200 further includes:
  • the first terminal reports first capability information to the network device, where the first capability information is used to indicate a modulation mode supported by the first terminal, or a modulation mode expected to be used by the first terminal.
  • the first capability information may be sent by the network device and the first terminal during initial communication.
  • the second indication information is determined by the network device according to the first capability information reported by the terminal device.
  • the second indication information may be used to instruct the first terminal to adopt the ASK modulation mode and use the ASK modulation mode
  • the first terminal may also be instructed to use the PSK modulation mode and the time period for using the PSK modulation mode.
  • the network device within the time period corresponding to the modulation mode indicated by the second indication information, the network device does not use the modulation mode to modulate the energy supply signal, so as to avoid demodulation of the backscatter signal by the network device affect. That is to say, based on the modulation mode indicated by the network device to be used by the first terminal and the modulation mode used by the network device in the same time period, the demodulation of the backscatter signal by the network device is not affected.
  • the second indication information may be sent by the network device and the first terminal during initial communication.
  • this embodiment 2 may include the following steps:
  • the first terminal reports the first capability information to the network device.
  • the network device determines second indication information according to the first capability information.
  • the network device sends second indication information to the first terminal.
  • the network device sends a first signal to the first terminal.
  • the first terminal determines a target modulation mode used for modulating the first signal according to the second indication information.
  • the first terminal may determine that the target modulation mode used for modulating the received modulated energy supply signal sent by the network device is ASK Modulation.
  • the first terminal modulates the first signal by using the target modulation mode to obtain a second signal.
  • the first terminal modulates the first signal by using the target modulation mode to obtain the second signal carrying information to be sent.
  • the first terminal sends the second signal to the network device.
  • the network device demodulates the second signal to obtain the to-be-sent information carried in the second signal.
  • Embodiment 3 the first terminal determines a fourth modulation method as a target modulation method used to modulate the first signal, and the fourth modulation method is a predefined modulation method.
  • the first signal is modulated by the network device using a third modulation method, where the third modulation method is a predefined modulation method.
  • the third modulation mode and the fourth modulation mode have an association relationship, for example, satisfy at least one of the association relationships in Table 1.
  • the third modulation method and the fourth modulation method are designed as follows: the network device performs modulation on the first modulation obtained by using the third modulation method based on the demodulation method corresponding to the fourth modulation method. The signal is further demodulated by using the second signal modulated by the fourth modulation method to obtain the information carried in the second signal.
  • the method 200 includes:
  • the first terminal receives a third signal sent by the network device, where the third signal is an unmodulated signal;
  • the first terminal modulates the third signal to obtain a fourth signal, and backscatters the fourth signal to the network device.
  • the first terminal may determine whether the third signal has been modulated according to envelope information, phase information or frequency information of the third signal.
  • the first terminal may also determine whether the third signal has been modulated according to the indication information of the network device.
  • the network device may indicate to the first terminal that the network device is in a certain Whether the signal sent in the time range is modulated.
  • the first terminal when the signal sent by the network device received by the first terminal is an unmodulated signal, the first terminal may determine any of the multiple modulation modes supported by the first terminal. A modulation method or a specific modulation method is used as a target modulation method for modulating the third signal.
  • the specific modulation mode is configured by the network device, or is predefined.
  • the specific modulation mode is configured by the network device according to the first capability information reported by the first terminal, where the first capability information is used to indicate the modulation supported by the first terminal Way.
  • the specific modulation scheme is a modulation scheme not used by the network device.
  • the first terminal can use the modulated energy supply signal sent by the network device to perform backscatter communication, so that the first terminal does not need to wait for the unmodulated signal to be received before performing backscatter Communication can reduce the limitation of backscatter communication time and reduce communication delay.
  • FIG. 10 is a schematic flowchart of a wireless communication method 300 according to another embodiment of the present application.
  • the method 300 can be executed by a network device in the communication system shown in FIG. 1 .
  • the method 300 includes As follows:
  • the first terminal receives a first signal sent by a network device
  • the first terminal determines a target modulation mode used for modulating the first signal according to whether the first signal has been modulated;
  • the first terminal modulates the first signal to obtain a second signal
  • the first terminal backscatters the second signal to the network device.
  • the first terminal may communicate with the network device in a zero-power consumption communication manner.
  • the zero-power communication may include backscatter communication, or may also include other passive or semi-passive communication manners, to which the present application is not limited.
  • the first terminal is a zero-power consumption terminal, or other terminals that do not actively transmit signals, but use signals sent by network devices to carry information.
  • the power supply mode of the first terminal may be passive or semi-passive.
  • the zero-power consumption terminal may be based on the aforementioned RFID technology, or may also be based on other technologies for zero-power communication or low-power communication introduced in other related or subsequent standard evolutions.
  • the terminal The device communicates with the network device through backscatter communication as an example for illustration, but the application is not limited thereto.
  • the embodiments of the present application can be applied to a cellular Internet of Things system, such as a cellular passive Internet of Things system, or can also be applied to other scenarios where a terminal device sends information to a network device through zero-power communication or battery-free communication. This application is not limited thereto.
  • the first signal may also be referred to as an energy supply signal, or an incoming wave signal, that is, the first signal may be used to supply energy to the first terminal, so that the first terminal supplies power to the network.
  • the device transmits backscattered signals to transfer information.
  • the first terminal may determine whether the first signal is a modulated signal according to the received first signal. For example, the first terminal may determine whether the first signal is a modulated signal according to at least one item of envelope information, frequency information, and phase information of the first signal.
  • the first terminal may detect envelope information of the first signal to determine whether the first signal is ASK modulated. As yet another example, the first terminal may detect frequency information of the first signal to determine whether the first signal is FSK modulated. As yet another example, the first terminal may detect phase information of the first signal to determine whether the first signal is PSK modulated.
  • the first terminal may also determine whether the first signal is a modulated signal according to the indication information of the network device, for example, the network device may indicate a certain time range to the first terminal Whether the signal sent in is modulated.
  • the modulation mode used by the first terminal to modulate the first signal needs to meet certain constraints. , or, certain constraints need to be satisfied between the modulation method used by the first terminal to modulate the first signal and the modulation method used by the network device to obtain the first signal, so that the first The second signal backscattered by the terminal can be correctly demodulated by the network device.
  • the first signal is a modulated signal and the first signal is an unmodulated signal, how the first terminal performs A method for determining the target modulation method used for modulation of a signal.
  • Embodiment 1 The first signal is a modulated signal.
  • the first terminal may determine the modulation method used by the first terminal to modulate the first signal according to the modulation method used by the network device to obtain the first signal. target modulation method.
  • the first terminal may modulate the first signal by using the target modulation mode, so as to carry information to be sent by the first terminal to the network device.
  • modulation methods in the embodiments of the present application include but are not limited to amplitude keying (ASK), frequency shift keying (FSK), phase shift keying (PSK), or other modulations introduced in standard evolution way, the present application is not limited to this.
  • ASK amplitude keying
  • FSK frequency shift keying
  • PSK phase shift keying
  • the first terminal may determine the second modulation method as the modulation method used to modulate the first signal Target modulation method. That is, the first terminal may use the second modulation mode to modulate the first signal to obtain the second signal.
  • the second modulation mode satisfies the following constraints: the network device can obtain the information carried in the second signal by demodulating the second signal based on the demodulation mode corresponding to the second modulation mode. information.
  • the second modulation scheme is different from the first modulation scheme.
  • the first modulation mode is a modulation mode not adopted by the first terminal, or a modulation mode not supported.
  • the first modulation method is associated with the second modulation method, and the association relationship between the first modulation method and the second modulation method may be predefined or configured by the network device .
  • the first terminal determines the target modulation method according to the modulation method used by the network device to obtain the first signal and the first association relationship.
  • the first association relationship may be an association relationship between a modulation method used by a network device and a modulation method used by a terminal device, or an association relationship between a modulation method used by a network device and a modulation method used by a zero-power consumption terminal, or, The correlation between the modulation method used by network equipment and the modulation method used for backscatter communication.
  • the first association relationship may be predefined, or may also be configured by the network device.
  • the modulation method used by the network device and the modulation method used by the terminal device may be in one-to-one correspondence, or may be one-to-many, or many-to-one. Applications are not limited to this.
  • Table 2 is an example of the first association relationship according to the present application.
  • Modulation used by network devices The modulation method used by the terminal equipment ASK PSK PSK ASK FSK ASK ASK FSK
  • the first modulation mode is ASK
  • the second modulation mode is PSK or FSK.
  • the first modulation scheme is PSK
  • the second modulation scheme is ASK
  • the method 300 further includes:
  • the first terminal determines the modulation mode used by the network device to obtain the first signal.
  • Manner 1 The first terminal determines, according to the received first signal, the modulation mode used by the network device to obtain the first signal.
  • the first terminal may determine the modulation used by the network device to obtain the first signal according to at least one of envelope information, frequency information and phase information of the received first signal Way.
  • the first terminal may detect the envelope information of the first signal to determine whether the first signal is ASK modulated.
  • the first terminal may detect the frequency information of the first signal to determine whether the first signal is FSK modulated.
  • the first terminal may detect the phase information of the first signal to determine whether the first signal is PSK modulated.
  • the first terminal demodulates the first signal according to the demodulation modes corresponding to multiple modulation modes, and demodulates the first signal according to the demodulation modes corresponding to the multiple modulation modes.
  • the demodulation result of the signal determines the modulation mode used by the network device to obtain the first signal.
  • the first terminal may perform blind demodulation on the first signal, so as to determine a modulation mode corresponding to the first signal.
  • Mode 2 The first terminal determines the modulation mode used by the network device to obtain the first signal according to the first indication information sent by the network device, where the first indication information is used to indicate the The modulation method adopted by the network device.
  • the first indication information is received by the first terminal before receiving the first signal. That is, before sending the first signal, the network device may use the first indication information to indicate the modulation mode adopted by the signal to be sent subsequently.
  • the first indication information may also be used to indicate a time range corresponding to the modulation mode adopted by the network device, that is, the network device all adopts the modulation mode within this time range. Then, all signals received by the first terminal within this period of time can be considered as modulated by the network equipment using the modulation mode.
  • the modulation mode adopted by the network device for the signal carrying the first indication information may be a predefined modulation mode, or in other words, a default modulation mode.
  • the network device and the first terminal use a predefined modulation mode when communicating for the first time.
  • the first indication information may be sent by the network device and the first terminal during initial communication.
  • the initial communication may include that the first terminal enters the coverage area of the network device and communicates with the network device for the first time, or may also include that the first terminal interrupts and communicates with the network device. After the communication of the device, communicate with the network device again.
  • Mode 3 The first terminal determines that the network device modulates the first signal using a third modulation mode, and the third modulation mode is a predefined modulation mode.
  • the first terminal determines that the first signal sent by the network device is modulated by using a predefined modulation method during initial communication.
  • the number of the predefined modulation modes may be one, or may also be multiple.
  • the third modulation method is designed as: a signal modulated by the third modulation method, and then a signal modulated by any modulation method supported by the first terminal and backscattered, the network All devices are capable of demodulating the backscattered signal.
  • Embodiment 1-2 the first terminal determines the target modulation mode used for modulating the first signal according to the second indication information of the network device.
  • the second indication information is used to indicate the modulation mode adopted by the first terminal and/or the time information of using the modulation mode.
  • the second indication information is used to indicate the modulation mode used by the first terminal to perform backscatter communication and/or the time information of using the modulation mode.
  • the time information of the modulation mode may include information about the starting time of use and/or the use duration of the modulation mode. That is, the time period during which the first terminal uses the modulation mode may be determined according to the time information of the modulation mode. For example, the first terminal may use the modulation mode indicated by the second indication information to modulate the modulated signal sent by the network device within the time period corresponding to the modulation mode.
  • the method 300 further includes:
  • the first terminal reports first capability information to the network device, where the first capability information is used to indicate a modulation mode supported by the first terminal, or a modulation mode expected to be used by the first terminal.
  • the first capability information may be sent by the network device and the first terminal during initial communication.
  • the second indication information is determined by the network device according to the first capability information reported by the terminal device.
  • the second indication information may be used to instruct the first terminal to adopt the ASK modulation mode and use the ASK modulation mode
  • the first terminal may also be instructed to use the PSK modulation mode and the time period for using the PSK modulation mode.
  • the network device within the time period corresponding to the modulation mode indicated by the second indication information, the network device does not use the modulation mode to modulate the energy supply signal, so as to avoid demodulation of the backscatter signal by the network device affect. That is to say, based on the modulation mode indicated by the network device to be used by the first terminal and the modulation mode used by the network device in the same time period, the demodulation of the backscatter signal by the network device is not affected.
  • the second indication information may be sent by the network device and the first terminal during initial communication.
  • Embodiment 1-3 the first terminal determines a fourth modulation method as a target modulation method used to modulate the first signal, and the fourth modulation method is a predefined modulation method.
  • the first signal is modulated by the network device using a third modulation method, where the third modulation method is a predefined modulation method.
  • the third modulation mode and the fourth modulation mode have an association relationship, for example, satisfy at least one of the association relationships in Table 1.
  • the third modulation method and the fourth modulation method are designed as follows: the network device performs modulation on the first modulation obtained by using the third modulation method based on the demodulation method corresponding to the fourth modulation method. The signal is further demodulated by using the second signal modulated by the fourth modulation method to obtain the information carried in the second signal.
  • Embodiment 2 The first signal is an unmodulated signal
  • the first terminal may determine any of the multiple modulation modes supported by the first terminal.
  • a modulation mode or a specific modulation mode is used as a target modulation mode for modulating the first signal.
  • the specific modulation mode is configured by the network device, or is predefined.
  • the specific modulation mode is configured by the network device according to the first capability information reported by the first terminal, where the first capability information is used to indicate the modulation supported by the first terminal Way.
  • the specific modulation scheme is a modulation scheme not used by the network device.
  • the first terminal can use the network device to send any signal for backscatter communication, and the first terminal can determine the modulation used by the backscatter according to whether the signal sent by the network device has been modulated In this way, it is beneficial to prevent the first terminal from modulating the energy supply signal sent by the network device from affecting the demodulation of the backscattered signal by the network device, hiding it, and the first terminal does not need to wait for the unmodulated signal to be received before performing the reverse signal.
  • Scattering communication can reduce the limitation of backscattering communication time and reduce communication delay.
  • Fig. 11 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application.
  • the terminal device 400 includes:
  • a communication unit 410 configured to receive a first signal sent by a network device, where the first signal is a modulated signal
  • a processing unit 420 configured to modulate the first signal to obtain a second signal
  • the communication ticket number 410 is also used to send the second signal to the network device.
  • processing unit 420 is further configured to:
  • processing unit 420 is further configured to:
  • processing unit 420 is further configured to:
  • the network device If the first signal is modulated by the network device using a first modulation method, determining a second modulation method as a target modulation method used to modulate the first signal, wherein the first modulation method It has an association relationship with the second modulation mode.
  • the association relationship is predefined, or configured by the network device.
  • processing unit 420 is further configured to:
  • processing unit 420 is further configured to:
  • the received first signal determine the modulation mode used by the network device to obtain the first signal.
  • processing unit 420 is further configured to:
  • the first indication information is received by the terminal device before receiving the first signal.
  • processing unit 420 is further configured to:
  • the network device uses a third modulation method to obtain the first signal, and the third modulation method is a predefined modulation method.
  • processing unit 420 is further configured to:
  • the second indication information of the network device determine the target modulation mode used to modulate the first signal, where the second indication information is used to indicate the terminal device used to perform backscatter communication A modulation scheme and/or time information using the modulation scheme.
  • the communication unit 410 is also used for:
  • the second indication information is determined by the network device according to the first capability information reported by the terminal device.
  • processing unit 420 is further configured to:
  • a fourth modulation method as a target modulation method used to modulate the first signal, where the fourth modulation method is a predefined modulation method.
  • the first signal is modulated by the network device using a third modulation method, where the third modulation method is a predefined modulation method, and the third modulation method and the first The four modulation schemes are associated.
  • the communication unit 410 is also used for:
  • the processing unit 420 is also used for:
  • processing unit 420 is further configured to:
  • the specific modulation mode is configured by the network device, or is predefined.
  • the specific modulation mode is configured by the network device according to the first capability information reported by the terminal device, where the first capability information is used to indicate the modulation mode supported by the terminal device.
  • the terminal device is a zero-power consumption terminal.
  • the communication unit 410 is also used for:
  • the second signal is sent by backscattering.
  • the above-mentioned 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 aforementioned processing unit may be one or more processors.
  • terminal device 400 may correspond to the first terminal in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 400 are to realize the The corresponding process of the first terminal in the method 200 shown in 9 is not repeated here for the sake of brevity.
  • Fig. 12 shows a schematic block diagram of a terminal device 800 according to an embodiment of the present application.
  • the terminal device 800 includes:
  • a communication unit 810 configured to receive a first signal sent by a network device
  • a processing unit 820 configured to determine a target modulation mode used for modulating the first signal according to whether the first signal has been modulated, and modulate the first signal to obtain a second signal;
  • the communication unit 810 is further configured to backscatter the second signal to the network device.
  • processing unit 820 is further configured to:
  • any modulation scheme or a specific modulation scheme among multiple modulation schemes supported by the first terminal is determined as the target modulation scheme.
  • the specific modulation mode is configured by the network device, or is predefined.
  • the communication unit 810 is also used for:
  • the specific modulation mode is configured by the network device according to the first capability information reported by the first terminal.
  • processing unit 820 is further configured to:
  • the first signal is a modulated signal
  • processing unit 820 is further configured to:
  • the network device If the first signal is modulated by the network device using a first modulation method, determining a second modulation method as a target modulation method used to modulate the first signal, wherein the first modulation method It has an association relationship with the second modulation mode.
  • the association relationship is predefined, or configured by the network device.
  • processing unit 820 is further configured to:
  • the first signal is a modulated signal
  • the second indication information of the network device determine the target modulation mode used for modulating the first signal, wherein the second indication
  • the information is used to indicate the modulation mode used by the first terminal to perform backscatter communication and/or time information of using the modulation mode.
  • processing unit 820 is further configured to:
  • a fourth modulation method as a target modulation method used to modulate the first signal, where the fourth modulation method is a predefined modulation method.
  • the first signal is modulated by the network device using a third modulation method, where the third modulation method is a predefined modulation method, and the third modulation method and the first The four modulation schemes are associated.
  • the above-mentioned 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 aforementioned processing unit may be one or more processors.
  • terminal device 800 may correspond to the first terminal in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 800 are respectively in order to realize the For the sake of brevity, the corresponding process of the first terminal in method 300 will not be repeated here.
  • Fig. 13 is a schematic block diagram of a network device according to an embodiment of the present application.
  • the network device 500 of Figure 13 includes:
  • a communication unit 510 configured to send a first signal to a first terminal, where the first signal is a modulated signal; and receive a second signal sent by the first terminal, where the second signal is the first obtained by modulating the first signal by the terminal.
  • the communication unit 510 is also used for:
  • the network device sends first indication information to the first terminal, where the first indication information is used to indicate the modulation mode adopted by the signal sent by the network device.
  • the first indication information is sent before the network device sends the first signal.
  • the communication unit 510 is also used for:
  • the network device sends second indication information to the first terminal, where the second indication information is used to indicate the modulation mode used by the first terminal to perform backscatter communication and/or the time when the modulation mode is used information.
  • the communication unit 510 is also used for:
  • the network equipment also includes:
  • a processing unit configured to determine the second indication information according to the first capability information.
  • the first signal is modulated by the network device using a first modulation method, where the first modulation method is a predefined modulation method.
  • the second signal is modulated by the first terminal using a second modulation method
  • the second modulation method is a predefined modulation method
  • the first modulation method and the second modulation method Modulation methods are associated.
  • the above-mentioned 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 aforementioned processing unit may be one or more processors.
  • the network device 500 may correspond to the network device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the network device 500 are to realize the For the sake of brevity, the corresponding flow of the network device in the shown method will not be repeated here.
  • FIG. 14 is a schematic structural diagram of a communication device 600 provided by an embodiment of the present application.
  • the communication device 600 shown in FIG. 14 includes a processor 610, and the processor 610 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.
  • the communication device 600 may further include a memory 620 .
  • the processor 610 can invoke and run a computer program from the memory 620, so as to implement the method in the embodiment of the present application.
  • the memory 620 may be an independent device independent of the processor 610 , or may be integrated in the processor 610 .
  • the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, to send information or data to other devices, or receive other Information or data sent by the device.
  • the transceiver 630 may include a transmitter and a receiver.
  • the transceiver 630 may further include antennas, and the number of antennas may be one or more.
  • the communication device 600 may specifically be the network device of the embodiment of the present application, and the communication device 600 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, details are not repeated here. .
  • the communication device 600 may specifically be the mobile terminal/terminal device of the embodiment of the present application, such as the first terminal, and the communication device 600 may implement the functions implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the corresponding process is not repeated here.
  • FIG. 15 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • the chip 700 shown in FIG. 15 includes a processor 710, and the processor 710 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.
  • the chip 700 may further include a memory 720 .
  • the processor 710 can invoke and run a computer program from the memory 720, so as to implement the method in the embodiment of the present application.
  • the memory 720 may be an independent device independent of the processor 710 , or may be integrated in the processor 710 .
  • the chip 700 may also include an input interface 730 .
  • the processor 710 can control the input interface 730 to communicate with other devices or chips, specifically, can obtain information or data sent by other devices or chips.
  • the chip 700 may also include an output interface 740 .
  • the processor 710 can control the output interface 740 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in the methods of the embodiment of the present application.
  • the chip can implement the corresponding processes implemented by the network device in the methods of the embodiment of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, such as the first terminal, and the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, For the sake of brevity, details are not repeated here.
  • the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.
  • Fig. 16 is a schematic block diagram of a communication system 900 provided by an embodiment of the present application. As shown in FIG. 16 , the communication system 900 includes a terminal device 910 and a network device 920 .
  • the terminal device 910 can be used to realize the corresponding functions realized by the first terminal in the above method
  • the network device 920 can be used to realize the corresponding functions realized by the network device in the above method. repeat.
  • the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability.
  • each step of the above-mentioned method embodiment may be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software.
  • the above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Program logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • the steps of the method disclosed in the embodiments of the present application can be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register.
  • 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.
  • the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash.
  • the volatile memory can be Random Access Memory (RAM), which acts as external cache memory.
  • RAM Static Random Access Memory
  • SRAM Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • Synchronous Dynamic Random Access Memory Synchronous Dynamic Random Access Memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM, DDR SDRAM enhanced synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM synchronous connection dynamic random access memory
  • Synchlink DRAM, SLDRAM Direct Memory Bus Random Access Memory
  • Direct Rambus RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, the memory in the embodiments of the present application is intended to include, but not be limited to, these and any other suitable types of memory.
  • the embodiment of the present application also provides a computer-readable storage medium for storing computer programs.
  • 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 methods of the embodiments of the present application.
  • the computer program enables the computer to execute the corresponding processes implemented by the network device in the methods of the embodiments of the present application.
  • the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application , for the sake of brevity, it is not repeated here.
  • the embodiment of the present application also provides a computer program product, including computer program instructions.
  • the computer program product can be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the network device in the methods of the embodiment of the present application.
  • the Let me repeat For the sake of brevity, the Let me repeat.
  • the computer program product can be applied to the mobile terminal/terminal device in the embodiments of the present application, such as the first terminal, and the computer program instructions cause the computer to execute the methods in the embodiments of the present application by the mobile terminal/terminal device
  • the computer program instructions cause the computer to execute the methods in the embodiments of the present application by the mobile terminal/terminal device
  • the corresponding process of implementation is not repeated here.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiment of the present application.
  • the computer program is run on the computer, the computer is made to execute the corresponding processes implemented by the network device in the methods of the embodiment of the present application.
  • the computer program is run on the computer, the computer is made to execute the corresponding processes implemented by the network device in the methods of the embodiment of the present application.
  • the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application, such as the first terminal.
  • the corresponding processes implemented by the terminal/terminal device are not described here again.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to realize the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially 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, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de communication sans fil, un dispositif terminal et un dispositif de réseau, qui sont avantageux pour réduire la limitation d'un temps de communication de rétrodiffusion du dispositif terminal et réduire un retard de communication. Le procédé comprend les étapes suivantes : un premier terminal reçoit un premier signal envoyé par un dispositif de réseau, le premier signal étant un signal modulé ; le premier terminal module le premier signal pour obtenir un second signal ; et le premier terminal envoie le second signal au dispositif de réseau.
PCT/CN2021/102786 2021-06-28 2021-06-28 Procédé de communication sans fil, dispositif terminal et dispositif de réseau WO2023272442A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202180094396.9A CN116918262A (zh) 2021-06-28 2021-06-28 无线通信的方法、终端设备和网络设备
PCT/CN2021/102786 WO2023272442A1 (fr) 2021-06-28 2021-06-28 Procédé de communication sans fil, dispositif terminal et dispositif de réseau

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PCT/CN2021/102786 WO2023272442A1 (fr) 2021-06-28 2021-06-28 Procédé de communication sans fil, dispositif terminal et dispositif de réseau

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WO2024059413A1 (fr) * 2022-09-14 2024-03-21 Qualcomm Incorporated Techniques de conversion de polarisation pour une radio de rétrodiffusion

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US20150236841A1 (en) * 2014-01-30 2015-08-20 Purdue Research Foundation Communicating data using backscatter modulation
WO2020233231A1 (fr) * 2019-05-22 2020-11-26 华为技术有限公司 Procédé de communication par rétrodiffusion, dispositif d'excitation, dispositif de réflexion et dispositif de réception
WO2020244392A1 (fr) * 2019-06-06 2020-12-10 华为技术有限公司 Procédé d'envoi de signal, procédé de réception de signal, et appareil de communication

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US20150236841A1 (en) * 2014-01-30 2015-08-20 Purdue Research Foundation Communicating data using backscatter modulation
WO2020233231A1 (fr) * 2019-05-22 2020-11-26 华为技术有限公司 Procédé de communication par rétrodiffusion, dispositif d'excitation, dispositif de réflexion et dispositif de réception
CN112073082A (zh) * 2019-05-22 2020-12-11 成都华为技术有限公司 反向散射通信方法、激励设备、反射设备以及接收设备
WO2020244392A1 (fr) * 2019-06-06 2020-12-10 华为技术有限公司 Procédé d'envoi de signal, procédé de réception de signal, et appareil de communication

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Publication number Priority date Publication date Assignee Title
WO2024059413A1 (fr) * 2022-09-14 2024-03-21 Qualcomm Incorporated Techniques de conversion de polarisation pour une radio de rétrodiffusion

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