WO2023000209A1 - 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
WO2023000209A1
WO2023000209A1 PCT/CN2021/107651 CN2021107651W WO2023000209A1 WO 2023000209 A1 WO2023000209 A1 WO 2023000209A1 CN 2021107651 W CN2021107651 W CN 2021107651W WO 2023000209 A1 WO2023000209 A1 WO 2023000209A1
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WO
WIPO (PCT)
Prior art keywords
signal
offset
uplink
trigger
time unit
Prior art date
Application number
PCT/CN2021/107651
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English (en)
Chinese (zh)
Inventor
左志松
徐伟杰
崔胜江
贺传峰
张治�
Original Assignee
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 CN202180095791.9A priority Critical patent/CN117016013A/zh
Priority to PCT/CN2021/107651 priority patent/WO2023000209A1/fr
Publication of WO2023000209A1 publication Critical patent/WO2023000209A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • processors there are one or more processors, and one or more memories.
  • 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.
  • the function node 130 may provide an energy supply signal to the terminal device 120, so that the terminal device 120 performs energy collection or charging based on the energy supply signal.
  • the energy supply node 130 can continuously or intermittently send an energy supply signal in a certain frequency band, so that the terminal device 120 can perform energy collection. After the terminal device 120 obtains energy, it can perform corresponding functions such as signal reception, signal reflection, and measurement.
  • the backscatter signal may be a signal formed by reflecting and/or modulating the trigger signal or the energy supply signal.
  • the terminal device 120 may modulate the energy supply signal sent by the energy supply node 130 , so as to send the modulated backscatter signal carrying information to the network device 120 .
  • the energy supply signal may be a carrier signal, for example, the energy supply signal may be a continuous wave (Continuous wave, CW), such as a sine wave.
  • the terminal device 120 may use the amplitude or phase of the CW to transmit and change bearer information according to a specific modulation mode.
  • the terminal device 120 may also modulate the trigger signal, so as to send the modulated backscatter signal carrying information to the network device 120, which is not made in this application. limited.
  • the energy supply signal may be a low-frequency, medium-frequency, high-frequency signal, etc.
  • the energy supply signal may be a certain signal specified in the 3GPP standard.
  • SRS PUSCH
  • PRACH Physical Uplink Control Channel
  • PUCCH Physical Downlink Control Channel
  • PDCCH Physical Downlink Control Channel
  • PDSCH Physical Downlink Control Channel
  • PBCH Physical Broadcast Control Channel
  • FIG. 1 exemplarily shows a network device and a terminal device.
  • the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. The embodiment of the application 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.
  • the network equipment may be a device for communicating with mobile equipment, and the network equipment may be an access point (Access Point, AP) in WLAN, GSM or A base station (Base Transceiver Station, BTS) in CDMA, 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 vehicle-mounted devices, wearable devices, and network devices (gNB) in NR networks or network devices in PLMN networks that will evolve in the future.
  • Access Point Access Point
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • Evolutional Node B, eNB or eNodeB evolved base station
  • gNB network devices
  • the network device provides services for the 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.
  • the cell may be a network device (for example, The cell corresponding to the base station) may belong to the macro base station or the base station corresponding to the small cell (Small cell).
  • the small cell here may include: Metro cell, Micro cell, Pico cell 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.
  • a terminal device may also be referred to as a user equipment, an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, Terminal, wireless communication device, user agent or user device, etc.
  • UE User Equipment
  • the terminal device can be a station (STAION, ST) in the 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 processing (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, and next-generation communication systems, such as terminal devices in NR networks or Terminal equipment in the future evolution of the Public Land Mobile Network (PLMN) network, or a zero-power terminal.
  • STAION, ST Session Initiation Protocol
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • 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.
  • An RFID system is a wireless communication system.
  • the RFID system is composed of two parts: an electronic tag (TAG) and a reader/writer (Reader/Writer).
  • Electronic tags include coupling components and chips, and 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.
  • Zero-power communication uses energy harvesting and backscatter communication technologies. In order to facilitate understanding of the technical solutions of the embodiments of the present application, related technologies of zero power consumption are described.
  • the zero-power communication system consists of network equipment and zero-power terminals.
  • the network equipment is used to send wireless power supply signals to zero-power terminals, downlink communication signals and receive backscattered signals from zero-power terminals.
  • a basic zero-power terminal includes an energy harvesting module, a backscatter communication module, and a low-power computing module.
  • the zero-power consumption terminal can also have a memory or a sensor for storing some basic information (such as item identification, etc.) or obtaining sensing data such as ambient temperature and ambient humidity.
  • FIG. 3 is a schematic diagram of the energy harvesting provided by the embodiment of the present application.
  • the radio frequency energy collection module realizes the collection of space electromagnetic wave energy based on the principle of electromagnetic induction, and then obtains the energy required to drive zero-power terminals, such as driving low-power demodulation and modulation modules, sensors and memory read, etc. Therefore, zero-power terminals do not require traditional batteries.
  • FIG. 4 is a schematic diagram of backscatter communication provided by the present application.
  • the zero-power communication terminal receives the wireless signal sent by the network, modulates the wireless signal, loads the information to be sent, and radiates the modulated signal from the antenna. This information transmission process is called for backscatter communication.
  • FIG. 5 is a circuit schematic diagram of resistive load modulation provided by an embodiment of the present application.
  • zero-power consumption terminal Since the zero-power consumption terminal performs information modulation on the incoming wave signal by means of load modulation, the backscatter communication process is realized. Therefore, zero-power terminals have significant advantages:
  • the terminal equipment does not actively transmit signals, and realizes backscatter communication by modulating the incoming wave signal.
  • the above-mentioned terminal equipment may be a zero-power terminal (such as a passive terminal, or even a semi-passive terminal), and even the terminal equipment may be a non-zero power consumption terminal, such as an ordinary terminal, but the ordinary terminal may be in some backscatter communication.
  • a zero-power terminal such as a passive terminal, or even a semi-passive terminal
  • the terminal equipment may be a non-zero power consumption terminal, such as an ordinary terminal, but the ordinary terminal may be in some backscatter communication.
  • the data transmitted by the terminal device may use different forms of codes to represent binary "1" and "0".
  • 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. In layman's terms, it is to use different pulse signals to represent 0 and 1.
  • the active zero-power terminal supplies power to the RFID chip through a built-in battery, so as to increase the reading and writing distance of the zero-power terminal and improve the reliability of communication. Therefore, it can be applied in some scenarios that require relatively high communication distance and read delay.
  • the network device and the energy supply node involved in this embodiment may be the same device or two independent devices, which is not specifically limited in this application.
  • the energy supply node is the network equipment and the trigger signal is carried in the energy supply signal; as another example, the energy supply node is other equipment except the network equipment and The trigger signal is independent of the energizing signal.
  • the sending timing of the energy supply signal includes the trigger period.
  • the uplink frame structure may be composed of at least one reflection period, and the reflection period includes at least one uplink time unit; for example, if the length of the reflection period is y ms, the length of the at least one uplink time unit is y ms.
  • the uplink time unit may also be called a reflection time unit.
  • the reflection period is offset backward by a propagation delay relative to the trigger period.
  • the backscatter signal is a signal formed by reflecting and/or modulating the energy supply signal in a frequency division duplex (FDD) manner.
  • FDD frequency division duplex
  • the terminal device generates a frequency shift by the first offset with respect to the frequency band where the trigger signal and/or the energy supply signal are located, and sends the backscatter signal on the frequency band after the frequency shift.
  • the first offset is the offset of the first frequency band relative to the frequency band where the trigger signal is located.
  • the first offset is the offset of the first frequency band relative to the frequency band where the trigger signal is located.
  • the offset of the frequency band where the energy supply signal is located.
  • the trigger signal is carried in the energy supply signal, and the first offset is the first frequency band relative to the trigger signal and the The offset of the frequency band where the power supply signal is located.
  • the technical solution for determining the first frequency band is exemplified below.
  • the at least one uplink reflection frequency band includes a frequency band associated with at least one first uplink time unit, and the at least one first uplink time unit includes uplink time within one reflection period in the uplink frame structure used by the backscatter signal unit.
  • the maximum frequency band offset is smaller than the width of the at least one uplink reflection frequency band.
  • the maximum frequency band offset may be b, where b is smaller than a.
  • b is equal to a-a1, where a1 represents the width of an uplink reflection frequency band.
  • the information pre-stored in the terminal device includes an identifier of the terminal device.
  • the frequency bands in the embodiments of the present application may be equivalent to frequency points.
  • the quantity of the at least one uplink frequency band may be equivalent to the quantity of at least one uplink frequency point
  • the maximum frequency band offset may be equivalent to a maximum frequency point offset.
  • the at least one uplink reflection frequency point includes at least one frequency point associated with a first uplink time unit
  • the at least one first uplink time unit includes frequency points within one reflection period in the uplink frame structure used by the backscatter signal Uplink time unit.
  • the maximum frequency point offset is smaller than the width of the at least one uplink reflection frequency point.
  • the first indication information is carried in the trigger signal and/or the energy supply signal.
  • the first offset is stored in at least one of:
  • the second uplink time unit receive the backscatter signal sent by the terminal device.
  • O2 is the second offset
  • m is all or part of the information pre-stored in the terminal device
  • n is the number of the at least one uplink time unit
  • mod represents a modulo division operation
  • the information prestored in the terminal device includes an identifier of the terminal device.
  • processor 510 may invoke and run a computer program from the memory, so as to implement the method in the embodiment of the present application.
  • the communication device 500 may be the terminal device in the 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, that is, the The communication device 500 may correspond to the terminal device 300 in the embodiment of the present application, and may correspond to a corresponding subject in performing the method 200 according to the embodiment of the present application. For the sake of brevity, details are not repeated here.
  • the communication device 500 may be the network device of the embodiment of the present application, and the communication device 500 may implement the corresponding processes implemented by the network device in the various methods of the embodiment of the present application.
  • a chip is also provided in the embodiment of the present application.
  • the chip may be an integrated circuit chip, which has signal processing capabilities, and can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application.
  • the chip can also be called system-on-chip, system-on-chip, system-on-chip or system-on-chip, etc.
  • the chip can be applied to various communication devices, so that the communication device installed with the chip can execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application.
  • the chip 600 may further include an input interface 630 .
  • the processor 610 can control the input interface 630 to communicate with other devices or chips, specifically, can obtain information or data sent by other devices or chips.
  • bus system includes a power bus, a control bus, and a status signal bus in addition to a data bus.
  • the storage mentioned above includes but is not limited to:
  • 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 double data rate synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous connection dynamic random access memory
  • Direct Rambus RAM Direct Rambus RAM
  • Embodiments of the present application also provide a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium stores one or more programs, and the one or more programs include instructions.
  • the portable electronic device can perform the wireless communication provided by the application. communication method.
  • 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. For brevity, here No longer.
  • the embodiment of the present application also provides a computer program.
  • the computer program When the computer program is executed by the computer, the computer can execute the wireless communication method provided in this application.
  • the computer program can be applied to the network device in the embodiment of the present application.
  • the computer program When the computer program is run on the computer, the computer executes the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity , which will not be repeated here.
  • the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application.
  • the computer program When the computer program is run on the computer, the computer executes each method in the embodiment of the present application to be implemented by the mobile terminal/terminal device For the sake of brevity, the corresponding process will not be repeated here.
  • the units/modules/components described above as separate/display components may or may not be physically separated, that is, they may be located in one place, or may also be distributed to multiple network units. Part or all of the units/modules/components can be selected according to actual needs to achieve the purpose of the embodiments of the present application.
  • the mutual coupling or direct coupling or communication connection shown or discussed above may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms .

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

Abstract

Des modes de réalisation de la présente demande concernent un procédé de communication sans fil, un dispositif terminal et un dispositif de réseau. Le procédé consiste à : recevoir un signal de déclenchement envoyé par un dispositif de réseau ; et envoyer un signal rétrodiffusé de liaison montante au dispositif de réseau, le signal rétrodiffusé étant un signal formé en utilisant un mode duplex pour réfléchir et/ou moduler un signal d'alimentation en énergie envoyé par un nœud d'alimentation en énergie. Le procédé peut non seulement appliquer un terminal à consommation d'énergie nulle à un Internet des objets cellulaire de façon à enrichir le type et le nombre de terminaux de liaison dans un réseau pour réellement obtenir l'Internet de Tout, mais peut également augmenter le taux d'utilisation de ressources et la fiabilité de transmission de données de façon à améliorer davantage l'efficacité d'utilisation d'énergie du terminal à consommation d'énergie nulle.
PCT/CN2021/107651 2021-07-21 2021-07-21 Procédé de communication sans fil, dispositif terminal et dispositif de réseau WO2023000209A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202180095791.9A CN117016013A (zh) 2021-07-21 2021-07-21 无线通信方法、终端设备和网络设备
PCT/CN2021/107651 WO2023000209A1 (fr) 2021-07-21 2021-07-21 Procédé de communication sans fil, dispositif terminal et dispositif de réseau

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Application Number Priority Date Filing Date Title
PCT/CN2021/107651 WO2023000209A1 (fr) 2021-07-21 2021-07-21 Procédé de communication sans fil, dispositif terminal et dispositif de réseau

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WO2023000209A1 true WO2023000209A1 (fr) 2023-01-26

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5649296A (en) * 1995-06-19 1997-07-15 Lucent Technologies Inc. Full duplex modulated backscatter system
US20150236841A1 (en) * 2014-01-30 2015-08-20 Purdue Research Foundation Communicating data using backscatter modulation
CN108141646A (zh) * 2015-08-12 2018-06-08 华盛顿大学 反向散射装置及结合反向散射装置的网络系统
CN108496094A (zh) * 2016-01-26 2018-09-04 华盛顿大学 包含单边带操作的实例的反向散射装置
CN111630903A (zh) * 2017-12-01 2020-09-04 交互数字专利控股公司 网络发起的按需零能量寻呼方法及装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5649296A (en) * 1995-06-19 1997-07-15 Lucent Technologies Inc. Full duplex modulated backscatter system
US20150236841A1 (en) * 2014-01-30 2015-08-20 Purdue Research Foundation Communicating data using backscatter modulation
CN108141646A (zh) * 2015-08-12 2018-06-08 华盛顿大学 反向散射装置及结合反向散射装置的网络系统
CN108496094A (zh) * 2016-01-26 2018-09-04 华盛顿大学 包含单边带操作的实例的反向散射装置
CN111630903A (zh) * 2017-12-01 2020-09-04 交互数字专利控股公司 网络发起的按需零能量寻呼方法及装置

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