WO2025160761A1 - Procédé, appareil et système de communication, dispositif de nœud et support de stockage - Google Patents

Procédé, appareil et système de communication, dispositif de nœud et support de stockage

Info

Publication number
WO2025160761A1
WO2025160761A1 PCT/CN2024/074764 CN2024074764W WO2025160761A1 WO 2025160761 A1 WO2025160761 A1 WO 2025160761A1 CN 2024074764 W CN2024074764 W CN 2024074764W WO 2025160761 A1 WO2025160761 A1 WO 2025160761A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
subcarrier
bandwidth
frequency domain
uplink
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
PCT/CN2024/074764
Other languages
English (en)
Chinese (zh)
Inventor
付婷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Xiaomi Mobile Software Co Ltd
Original Assignee
Beijing Xiaomi Mobile Software Co Ltd
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.)
Filing date
Publication date
Application filed by Beijing Xiaomi Mobile Software Co Ltd filed Critical Beijing Xiaomi Mobile Software Co Ltd
Priority to PCT/CN2024/074764 priority Critical patent/WO2025160761A1/fr
Priority to CN202480000369.4A priority patent/CN118140568A/zh
Publication of WO2025160761A1 publication Critical patent/WO2025160761A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a communication method, node equipment, apparatus, system and storage medium.
  • Ambient-IoT The Ambient Internet of Things
  • NB-IoT Narrowband Internet of Things
  • Ambient-IoT terminals are less complex, less expensive, and require less maintenance.
  • Ambient-IoT terminals require energy from the external environment and are therefore also referred to as ambient-powered terminals or passive terminals.
  • Embodiments of the present disclosure provide a communication method, node equipment, apparatus, system, and storage medium.
  • an embodiment of the present disclosure provides a communication method, performed by a node device, the method comprising:
  • a continuous electromagnetic wave is sent to a terminal, wherein the CW is transmitted on multiple frequency domain units.
  • the CW is used by the terminal to send uplink information based on backscatter communications (Backscatter Communications or Backscattering) technology.
  • the terminal is an Internet of Things terminal that obtains energy from the environment.
  • an embodiment of the present disclosure provides a communication method, performed by a terminal, the method comprising:
  • a CW is received from a node device, where the CW is transmitted on multiple frequency domain units.
  • the CW is used by the terminal to send uplink information based on backscatter technology.
  • the terminal is an Internet of Things terminal that obtains energy from the environment.
  • an embodiment of the present disclosure provides a communication method, performed by a network device, the method comprising:
  • the indication information is used to indicate the number of the subcarriers that can be occupied by the CW, or the indication information is used to indicate the uplink bandwidth corresponding to the uplink information sent by the terminal.
  • an embodiment of the present disclosure provides a node device, including:
  • the transceiver module is used to send continuous electromagnetic waves (CW) to the terminal.
  • the CW is transmitted on multiple frequency domain units.
  • the CW is used by the terminal to send uplink information based on backscatter technology.
  • the terminal is an Internet of Things terminal that obtains energy from the environment.
  • an embodiment of the present disclosure provides a terminal, including:
  • the transceiver module is used to receive the CW sent by the node device, the CW is transmitted on multiple frequency domain units, the CW is used by the terminal to send uplink information based on backscatter technology, and the terminal is an Internet of Things terminal that obtains energy from the environment.
  • an embodiment of the present disclosure provides a network device, including:
  • the transceiver module is used to send indication information to the node device, wherein the indication information is used to indicate the number of subcarriers that the CW can occupy, or the indication information is used to indicate the uplink bandwidth corresponding to the terminal sending uplink information.
  • an embodiment of the present disclosure provides a communication device, including:
  • processors one or more processors
  • the communication device is used to execute the method described in the first aspect, the second aspect or the third aspect.
  • an embodiment of the present disclosure provides a communication system, including a node device, a terminal and a network device, wherein:
  • the node device is configured to implement the method according to the first aspect
  • the terminal is configured to implement the method according to the second aspect
  • the network device is configured to implement the method described in the third aspect.
  • an embodiment of the present disclosure provides a storage medium, wherein the storage medium stores instructions, wherein:
  • the communication device When the instruction is executed on a communication device, the communication device is caused to execute the method according to the first aspect, the second aspect or the third aspect.
  • an embodiment of the present disclosure provides a program product, wherein:
  • the communication device When the program product is executed by a communication device, the communication device is caused to execute the method according to the first aspect, the second aspect, or the third aspect.
  • the node device provides energy or excitation signals to the terminal by sending CW so that the terminal can use CW for backscattering.
  • CW occupies multiple frequency domain units, thereby effectively improving the performance of CW in resisting frequency domain fading, thereby improving the reliability of communication.
  • FIG1 is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure
  • FIG2a and FIG2b are exemplary interaction diagrams of a method provided according to an embodiment of the present disclosure.
  • 3a to 3b are exemplary flowcharts of a method according to an embodiment of the present disclosure.
  • 4a and 4b are exemplary flowcharts of a method according to an embodiment of the present disclosure.
  • FIG5 is an exemplary flowchart of a method provided according to an embodiment of the present disclosure.
  • FIG6a is a schematic structural diagram of a node device according to an embodiment of the present disclosure.
  • FIG6b is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG7a is a schematic diagram of a communication device according to an embodiment of the present disclosure.
  • FIG7 b is a schematic diagram of a communication device according to an embodiment of the present disclosure.
  • Embodiments of the present disclosure provide a communication method, node equipment, apparatus, system, and storage medium.
  • an embodiment of the present disclosure provides a communication method, performed by a node device, the method comprising:
  • a CW is sent to the terminal.
  • the CW is transmitted on multiple frequency domain units.
  • the CW is used by the terminal to send uplink information based on backscatter technology.
  • the terminal is an IoT terminal that obtains energy from the environment.
  • the node device provides energy or excitation signal to the terminal by sending CW so that the terminal can use CW for backscattering.
  • CW occupies multiple frequency domain units, which can effectively improve the performance of CW in resisting frequency domain fading, thereby improving the reliability of communication.
  • the frequency domain unit is one of the following:
  • the CW may occupy multiple sub-bands or multiple sub-carriers, thereby effectively resisting frequency domain fading.
  • the CW includes multiple signals with the same bandwidth, and the multiple signals with the same bandwidth are compounded based on frequency division multiplexing (FDM) technology; wherein the frequency domain unit is a sub-band.
  • FDM frequency division multiplexing
  • CW may be a broadband signal, which is transmitted over a certain bandwidth and has better resistance to frequency domain fading than a single-frequency wireless signal.
  • CW is obtained through orthogonal frequency division multiplexing (OFDM) modulation, or through discrete Fourier transform-spread OFDM (DFT-S-OFDM) modulation; wherein the frequency domain unit is a subcarrier.
  • OFDM orthogonal frequency division multiplexing
  • DFT-S-OFDM discrete Fourier transform-spread OFDM
  • the CW may be a multi-carrier signal modulated by OFDM, occupying multiple sub-carriers for transmission, thereby combating deep fading in the frequency domain to a certain extent.
  • the bandwidth of the subcarrier is the same as the bandwidth of the downlink subcarrier corresponding to the downlink information sent by the network device; or,
  • the bandwidth of the subcarrier is defined by the protocol.
  • the node device may determine the bandwidth of the subcarrier in the CW according to the protocol definition or the bandwidth of the downlink subcarrier of the network device, so as to transmit the CW in an appropriate frequency domain width.
  • the number of subcarriers where the CW is located is positively correlated with the uplink bandwidth corresponding to the uplink information sent by the terminal.
  • the node device may transmit CW on a suitable number of subcarriers based on the uplink bandwidth, so that the terminal may reasonably send uplink information on a required frequency domain width based on backscattering.
  • the method further includes:
  • Indication information sent by a network device is received, where the indication information is used to indicate the number of subcarriers that a CW can occupy, or the indication information is used to indicate an uplink bandwidth.
  • the node device may directly or indirectly obtain the number of subcarriers occupied when sending a CW according to the instruction information of the network device, thereby obtaining the frequency domain width occupied by the CW.
  • the waveform function x(t) corresponding to CW satisfies:
  • N represents the number of subcarriers where the CW is located
  • xk (t) represents the waveform of the Kth subcarrier
  • ⁇ ak ⁇ represents the complex-valued symbol on the Kth subcarrier
  • ⁇ f represents the bandwidth of each subcarrier
  • fc represents the center frequency of the lowest-frequency subcarrier
  • ( fc +k ⁇ f) represents the frequency domain position of the Kth subcarrier
  • 2 ⁇ ( fc +k ⁇ f)t represents the phase of the Kth subcarrier at time t.
  • the waveform parameters of the CW multi-carrier signal are illustrated, and the CW transmission waveform can be determined based on the waveforms of different sub-carriers.
  • ⁇ ak ⁇ is a constant amplitude zero autocorrelation sequence.
  • ⁇ ak ⁇ may be a ZC sequence with a constant amplitude, which is conducive to OFDM modulation.
  • the CW has a constant amplitude.
  • the CW has a constant amplitude, so that the terminal can perform amplitude modulation on the received CW based on backscattering to transmit uplink information.
  • the CW has a constant amplitude in the time domain.
  • an embodiment of the present disclosure provides a communication method, performed by a terminal, the method comprising:
  • a CW is received from a node device, where the CW is transmitted on multiple frequency domain units.
  • the CW is used by the terminal to send uplink information based on backscatter technology.
  • the terminal is an Internet of Things terminal that obtains energy from the environment.
  • the terminal can receive the CW sent by the node device and use the CW for backscattering, wherein the CW occupies multiple frequency domain units, thereby effectively improving the performance of the CW in resisting frequency domain fading, thereby improving the reliability of communication.
  • the frequency domain unit is one of the following:
  • the CW includes multiple signals with the same bandwidth, and the multiple signals with the same bandwidth are compounded based on FDM technology; wherein the frequency domain unit is a sub-band, and the total bandwidth of the multiple sub-bands where the CW is located is greater than the sum of the multiple bandwidths.
  • the CW is obtained through OFDM modulation, or through DFT-S-OFDM modulation; wherein the frequency domain unit is a subcarrier.
  • the bandwidth of the subcarrier is the same as the bandwidth of the downlink subcarrier corresponding to the downlink information sent by the network device; or,
  • the bandwidth of the subcarrier is defined by the protocol.
  • the number of subcarriers where the CW is located is positively correlated with the uplink bandwidth corresponding to the uplink information sent by the terminal.
  • the waveform function x(t) corresponding to CW satisfies:
  • N represents the number of subcarriers where the CW is located
  • xk (t) represents the waveform of the Kth subcarrier
  • ⁇ ak ⁇ represents the complex-valued symbol on the Kth subcarrier
  • ⁇ f represents the bandwidth of each subcarrier
  • fc represents the center frequency of the lowest-frequency subcarrier
  • ( fc +k ⁇ f) represents the frequency domain position of the Kth subcarrier
  • 2 ⁇ ( fc +k ⁇ f)t represents the phase of the Kth subcarrier at time t.
  • ⁇ ak ⁇ is a constant amplitude zero autocorrelation sequence.
  • the method further includes:
  • Uplink information is sent through amplitude modulation according to a CW, wherein the CW has a constant amplitude.
  • the CW has a constant amplitude in the time domain.
  • the method further includes:
  • Uplink information is sent in a non-amplitude modulation manner according to CW, wherein the non-amplitude modulation manner includes a frequency modulation manner or a phase modulation manner.
  • an embodiment of the present disclosure provides a communication method, performed by a network device, the method comprising:
  • the indication information is used to indicate the number of the subcarriers that can be occupied by the CW, or the indication information is used to indicate the uplink bandwidth corresponding to the uplink information sent by the terminal.
  • an embodiment of the present disclosure provides a node device, including:
  • the transceiver module is used to send continuous electromagnetic waves (CW) to the terminal.
  • the CW is transmitted on multiple frequency domain units.
  • the CW is used by the terminal to send uplink information based on backscatter technology.
  • the terminal is an Internet of Things terminal that obtains energy from the environment.
  • an embodiment of the present disclosure provides a terminal, including:
  • the transceiver module is used to receive the CW sent by the node device, the CW is transmitted on multiple frequency domain units, the CW is used by the terminal to send uplink information based on backscatter technology, and the terminal is an Internet of Things terminal that obtains energy from the environment.
  • an embodiment of the present disclosure provides a network device, including:
  • the transceiver module is used to send indication information to the node device, wherein the indication information is used to indicate the number of subcarriers that the CW can occupy, or the indication information is used to indicate the uplink bandwidth corresponding to the terminal sending uplink information.
  • processors one or more processors
  • the communication device is used to execute the method described in the first aspect, the second aspect or the third aspect.
  • the node device is configured to implement the method according to the first aspect
  • the terminal is configured to implement the method according to the second aspect
  • the network device is configured to implement the method described in the third aspect.
  • an embodiment of the present disclosure provides a storage medium, wherein the storage medium stores instructions, wherein:
  • the communication device When the instruction is executed on a communication device, the communication device is caused to execute the method according to the first aspect, the second aspect or the third aspect.
  • an embodiment of the present disclosure provides a program product, wherein:
  • the communication device When the program product is executed by a communication device, the communication device is caused to execute the method according to the first aspect, the second aspect, or the third aspect.
  • an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first and second aspects.
  • an embodiment of the present disclosure provides a chip or a chip system, wherein the chip or chip system includes a processing circuit configured to execute the method described in the optional implementation of the first and second aspects above.
  • each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined.
  • a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged.
  • the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.
  • plurality refers to two or more.
  • the terms "at least one of”, “one or more”, “a plurality of”, “multiple”, etc. can be used interchangeably.
  • descriptions such as “at least one of A and B,” “A and/or B,” “A in one case, B in another case,” or “in response to one case A, in response to another case B” may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.
  • a or B and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.
  • prefixes such as “first” and “second” in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects.
  • the description object please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes.
  • the description object is a "field”
  • the ordinal number before the "field” in the "first field” and the "second field” does not limit the position or order between the "fields”.
  • “First” and “second” do not limit whether the "fields” they modify are in the same message, nor do they limit the order of the "first field” and the "second field”.
  • the description object is a "level”
  • the ordinal number before the "level” in the “first level” and the “second level” does not limit the priority between the "levels”.
  • the number of description objects is not limited by the ordinal number and can be one or more. Taking “first device” as an example, the number of "devices" can be one or more.
  • the objects modified by different prefixes can be the same or different.
  • the description object is "device”
  • the "first device” and the “second device” can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information”, then the "first information” and the “second information” can be the same information or different information, and their contents can be the same or different.
  • “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.
  • terms such as “in response to", “in response to determining", “in the case of", “at the time of", “when!, “if", “if", etc. can be used interchangeably.
  • terms such as “greater than”, “greater than or equal to”, “not less than”, “more than”, “more than or equal to”, “not less than”, “higher than”, “higher than or equal to”, “not less than”, and “above” can be replaced with each other, and terms such as “less than”, “less than or equal to”, “not greater than”, “less than”, “less than or equal to”, “not more than”, “lower than”, “lower than or equal to”, “not higher than”, and “below” can be replaced with each other.
  • devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as “equipment”, “device”, “circuit”, “network element”, “node”, “function”, “unit”, “section”, “system”, “network”, “chip”, “chip system”, “entity”, “subject”, etc.
  • network can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.
  • the "access network device (AN device)” may also be referred to as a “radio access network device (RAN device)", “base station (BS)", “radio base station (radio base station)”, “fixed station (fixed station)”, and in some embodiments may also be understood as a “node (node)", “access point (access point)", “transmission point (TP)”, “reception point (RP)”, “transmission and/or reception point (transmission/reception point, TRP)", “panel”, “antenna panel”, “antenna array”, “cell", “macro cell”, “small cell”, “femto cell”, “pico cell”, “sector”, “cell group”, “serving cell”, “carrier”, “component carrier”, “bandwidth part (BWP)", etc.
  • RAN device radio access network device
  • BS base station
  • RP reception point
  • TRP transmission and/or reception point
  • terminal or “terminal device” may be referred to as "user equipment (UE)", “user terminal”, “mobile station (MS)”, “mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.
  • UE user equipment
  • MS mobile station
  • MT mobile terminal
  • obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.
  • data, information, etc. may be obtained with the user's consent.
  • each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.
  • FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.
  • the communication system 100 includes at least one of the following: a terminal 101, a downlink signal sending node (Downlink Signal Node, DSN) 102, a continuous electromagnetic wave node (continuous wave node, CW node or CWN) 103, an energy source node (Energy Source Node, ESN) 104 and an uplink receiver (Uplink receiver, UR) 105.
  • DSN Downlink Signal Node
  • DSN Downlink Signal Node
  • continuous electromagnetic wave node continuous wave node
  • CW node or CWN continuous wave node
  • ESN Energy source node
  • Uplink receiver Uplink receiver
  • the terminal 101 may be an Ambient-IoT terminal or a device.
  • the terminal 101 may be excited and powered by received electromagnetic signals, or obtain energy by acquiring external heat energy, kinetic energy, and the like.
  • the power acquisition and storage capabilities of the terminal 101 vary depending on the type and working mode of the terminal 101.
  • the types of the terminal 101 include:
  • Device A cannot independently generate or amplify signals.
  • Device A uses backscattering or backscattering communication and does not have the ability to amplify downlink (DL) and/or uplink (UL) signals.
  • DL downlink
  • UL uplink
  • Device B Has energy storage capabilities but cannot independently generate signals. For example, Device B uses backscattering and can use stored energy to amplify DL and/or UL signals. Device A or Device B may use simpler modulation and demodulation methods, such as binary on-off keying (OOK) or phase-shift keying (PSK).
  • OOK binary on-off keying
  • PSK phase-shift keying
  • Device C Has energy storage capabilities and can independently generate signals, such as a radio frequency (RF) module that actively transmits signals.
  • Device C can use more complex modulation and coding schemes, such as OFDM modulation and demodulation.
  • device C has the strongest capability and the highest terminal cost.
  • Devices A and B have weak capabilities and the terminal.
  • the coverage range supported by their terminals is smaller.
  • the power consumption of device A or device B in the working mode is lower than that of device C in the working mode.
  • the Ambient-IoT communication system may include four links, for example: a link 1 for transmitting downlink information, a link 2 for receiving uplink information, a link 3 for sending CW, and a link 4 for sending a charging signal.
  • the DSN 102 is used to send downlink information or indication information.
  • the DSN 102 can be a network node or network device, for example, a base station, or a relay device such as a relay UE.
  • the DSN 102 can send indication information to the terminal 101 to trigger uplink transmission of the terminal 101.
  • CWN 103 is used to transmit continuous electromagnetic waves (CWs).
  • Terminal 101 can use CWs to send uplink information based on backscatter.
  • CWN 103 can also provide an excitation function, enabling devices A and B to perform uplink transmission based on backscatter.
  • CWs can serve as an energy source (ES), providing energy to Terminal 101.
  • Terminal 101 can receive CWs and store energy.
  • ES energy source
  • ESN 104 is used to provide energy to terminal 101.
  • ESN 104 functions for device B and device C. Since device A has limited energy storage capabilities, ES signals other than CW may not be defined for device A. Alternatively, ES may also be used for device A.
  • UR 105 may be a terminal or user equipment (UE) other than terminal 101, and is configured to receive uplink information sent by Ambient-IoT terminal 101.
  • UE user equipment
  • UR 105 may receive uplink information sent by terminal 101 based on backscatter communication, or receive uplink information actively transmitted by terminal 101.
  • the nodes involved in the four links in the above embodiment can be independently configured, or can be the same node or device, or two, three, or four of them can be configured as one node or device.
  • link 4 can be omitted or non-existent.
  • the functions of the above-mentioned different nodes can be implemented or supported by a single device.
  • a single device can support the functions of multiple nodes or all of the above-mentioned nodes.
  • a single device can correspond to a node with only one of the above-mentioned functions.
  • a network such as a network device, can coordinate the behavior of the above-mentioned different nodes, such as DSN 102, CWN 103, ESN 104, and UR 105, to support effective communication with terminal 101.
  • the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.
  • a mobile phone a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery
  • the network device may include at least one of an access network device and a core network device.
  • the access network device is, for example, a node or device that accesses a terminal to a wireless network.
  • the access network device may include an evolved Node B (eNB), a next generation evolved Node B (ng-eNB), a next generation Node B (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a wireless fidelity (WiFi) system, but is not limited thereto.
  • eNB evolved Node B
  • ng-eNB next generation evolved Node B
  • gNB next generation Node B
  • the technical solution of the present disclosure may be applicable to the Open RAN architecture.
  • the interfaces between or within the access network devices involved in the embodiments of the present disclosure may become internal interfaces of Open RAN, and the processes and information interactions between these internal interfaces may be implemented through software or programs.
  • the access network device may be composed of a centralized unit (CU) and a distributed unit (DU), where the CU may also be called a control unit.
  • the CU-DU structure may be used to split the protocol layers of the access network device, with some functions of the protocol layers centrally controlled by the CU, and the remaining functions of some or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.
  • the core network device may be a device including one or more network elements, or may be multiple devices or device groups, each including all or part of one or more network elements.
  • the network element may be virtual or physical.
  • the core network includes, for example, the Evolved Packet Core (EPC), the 5G Core Network (5GCN), the Next Generation Core (NGCN), and the 5G Core Network (5GCN).
  • EPC Evolved Packet Core
  • 5GCN 5G Core Network
  • NGCN Next Generation Core
  • 5GCN 5G Core Network
  • the core network device refers to a network element with a specific function, such as the Access Management Function (AMF) and the Service Management Function (SMF).
  • AMF Access Management Function
  • SMF Service Management Function
  • the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution provided by the embodiment of the present disclosure.
  • Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution provided by the embodiment of the present disclosure is also applicable to similar technical problems.
  • the entities shown in Figure 1 are examples.
  • the communication system may include all or part of the entities in Figure 1, and may also include other entities outside of Figure 1.
  • the number and form of the entities are arbitrary.
  • the connection relationship between the entities is an example.
  • the entities may be connected or disconnected, and the connection may be in any manner, which may be direct or indirect, and may be wired or wireless.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • LTE-B LTE-Beyond
  • SUPER 3G IMT-Advanced
  • 4G fourth generation mobile communication system
  • 5G 5G new radio
  • FAA new radio access technology
  • RAT new radio
  • NX new radio access
  • FX future generation radio access
  • GSM Global System for Mobile communications
  • CDMA 2000 Ultra Mobile Broadband
  • UMB Ultra Mobile Broadband
  • IEEE 802.11 Wi-Fi (registered trademark)
  • IEEE 802.16 WiMAX (registered trademark)
  • IEEE 802.20 Ultra-WideBand (UWB)
  • Bluetooth registered trademark
  • PLMN Public Land Mobile Network
  • D2D Device to Device
  • M2M Machine to Machine
  • IoT Internet of Things
  • V2X Vehicle to Everything
  • systems using other communication processing methods and next-generation systems based on them, etc.
  • combinations of multiple systems for example, combinations of LTE or LTE-A with 5G may also be applied.
  • the Ambient IoT system can be used in scenarios such as inventory management, sensors, positioning, and command execution.
  • Ambient IoT's network coverage is limited, and information transmission between terminal 101 and the network is easily affected by the environment. In these scenarios, terminal 101 must maintain a reliable connection to the network.
  • the terminal 101 can communicate based on the backscattering method.
  • Backscatter communication is an extremely low-power modulation and transmission technology that uses the backscattering principle of radio frequency signals, and is a means to achieve the intelligent connection of all things.
  • CWN103 sends a radio frequency signal such as an electromagnetic wave, and the terminal 101 receives the electromagnetic wave.
  • the internal circuit of the terminal 101 modulates the information to be transmitted on the basis of the incident electromagnetic wave through load impedance modulation and other methods, and then sends out the modulated electromagnetic wave carrying the information.
  • There are many ways to modulate information such as amplitude shift keying (ASK), frequency shift keying (FSK) or phase shift keying (PSK).
  • Figure 2a is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 2a, the embodiment of the present disclosure relates to a communication method, the method comprising:
  • Step S2101 The node device sends a CW to the terminal 101 .
  • the node device is configured to provide a CW capable of backscattering for the terminal 101 so that the terminal 101 can send uplink information such as uplink communication data.
  • the node device may be CWN 103.
  • the node device may be DSN 102 or ESN 104 capable of transmitting CWs.
  • the node device may be a network device capable of providing CWs.
  • the node device may be a network device capable of simultaneously implementing the functions of DSN 102, CWN 103, and ESN 104.
  • the node device can be a separately set node such as a separately set CWN103, or a receiving end of the terminal 101 based on backscatter communication such as UR105, or a network device that triggers backscatter communication for the terminal 101; wherein UR105 can be a base station or an intermediate node such as a UE, and the network device can be DSN102 such as a base station.
  • CW is transmitted on multiple frequency domain units, and CW is used by terminal 101 to send uplink information based on backscatter technology, and the terminal is an Internet of Things terminal that obtains energy from the environment.
  • the terminal 101 may include device A or device B.
  • the frequency domain unit includes one of the following:
  • the sub-band may be a set bandwidth, and when the CW occupies multiple sub-bands, it can combat deep fading in the frequency domain to a certain extent.
  • the number and/or bandwidth of subcarriers may be determined according to a protocol definition, or according to uplink transmission of the terminal 101 and downlink transmission of the DSN 102 .
  • the CW includes multiple signals with the same bandwidth, and the multiple signals with the same bandwidth are multiplexed based on the FDM technology; wherein the frequency domain unit is a sub-band.
  • the bandwidth of each signal is W2 Hz
  • the bandwidth of CW is W1 Hz
  • CW may be composed of multiple FDM signals with a bandwidth of W2 Hz.
  • the CW is obtained through OFDM modulation, or through DFT-S-OFDM modulation; wherein the frequency domain unit is a subcarrier.
  • a multi-carrier signal is used as the CW, such as a multi-carrier OFDM signal or a DFT-S-OFDM signal, to improve the CW's performance against frequency domain fading and also to improve the reliability of ambient IoT system communications.
  • the bandwidth of the subcarrier is the same as the bandwidth of the downlink subcarrier corresponding to the downlink information sent by the network device; or, the bandwidth of the subcarrier is defined by a protocol.
  • the network device may be DSN 102, and DSN 102 may trigger backscatter communication of terminal 101.
  • the network device may indicate the bandwidth of the downlink subcarrier by sending indication information to the node device; when the node device and the network device are the same device, the node device may directly obtain the bandwidth of the downlink subcarrier.
  • the CW has a constant amplitude.
  • CW has a constant amplitude in the time domain or in the frequency domain.
  • CW has a constant amplitude in the time domain, so that terminal 101 can transmit uplink information through amplitude modulation during backscattering.
  • amplitude modulation can include OOK modulation, etc.
  • terminal 101 can reflect energetic CW signals during backscattering. For example, when terminal 101 needs to send a "1", terminal 101 reflects the energetic time domain signal; when terminal 101 needs to send a "0", terminal 101 does not reflect the signal.
  • high-order amplitude modulation can be used, and the terminal 101 reflects the energetic CW with different reflection coefficients during backscattering.
  • the terminal 101 when the terminal 101 needs to send "11", the terminal 101 reflects the energetic time domain signal with a reflection coefficient of K1; when the terminal 101 needs to send "10", the terminal 101 reflects the energetic time domain signal with a reflection coefficient of K2; when the terminal 101 needs to send "01”, the terminal 101 reflects the energetic time domain signal with a reflection coefficient of K3; when the terminal 101 needs to send "00", the terminal 101 does not reflect the energetic time domain signal, or considers the reflection coefficient to be 0; wherein the reflection coefficients K1, K2 and K3 are not equal to each other.
  • terminal 101 cannot use general amplitude modulation to transmit uplink information during backscattering; non-amplitude modulation methods such as frequency modulation, phase modulation, etc. can be used; OOK modulation method can also be used.
  • the waveform function x(t) corresponding to CW satisfies:
  • N represents the number of subcarriers where the CW is located
  • xk (t) represents the waveform of the Kth subcarrier
  • ⁇ ak ⁇ represents the complex-valued symbol on the Kth subcarrier
  • ⁇ f represents the bandwidth of each subcarrier
  • fc represents the center frequency of the lowest-frequency subcarrier
  • ( fc +k ⁇ f) represents the frequency domain position of the Kth subcarrier
  • 2 ⁇ ( fc +k ⁇ f)t represents the phase of the Kth subcarrier at time t.
  • ⁇ ak ⁇ is a constant amplitude zero autocorrelation sequence.
  • ⁇ ak ⁇ has a constant amplitude in the time domain
  • the sequence in the frequency domain may be a (Zadoff-Chu, ZC) sequence
  • the time domain sequence corresponding to the frequency domain sequence also has the characteristic of constant amplitude.
  • ⁇ ak ⁇ may be obtained through DFT transformation.
  • the number of subcarriers where the CW is located is positively correlated with the uplink bandwidth corresponding to the uplink information sent by the terminal 101.
  • the bandwidth of the uplink signal sent by the terminal 101 is equal to the total bandwidth of multiple subcarriers occupied by the CW.
  • the more subcarriers a CW occupies the larger the uplink bandwidth of the uplink signal sent by the terminal 101 during backscattering.
  • the network device may control the uplink bandwidth for uplink signals transmitted by the terminal 101 by controlling the number of subcarriers on which a node device such as CWN 103 transmits a CW.
  • the network device may instruct CWN 103 to control the number of subcarriers occupied by the CW it transmits by indicating the uplink bandwidth resources of the uplink signal of the terminal 101, as described in the embodiment with reference to FIG2 b.
  • the terminal 101 receives the CW based on the frequency domain position of the CW and performs step S2102.
  • step S2102 the terminal 101 sends uplink information based on backscatter according to the received CW.
  • the backscattering of the terminal 101 may be triggered by a network device. For example, after receiving a downlink instruction from the network device, the terminal 101 executes step S2102.
  • the terminal 101 may include device A or device B, that is, the terminal 101 is a device that communicates using a backscattering method.
  • the node device needs to provide CW for terminal 101 to reflect.
  • the frequency of the reflected signal or uplink information of terminal 101 may be the same as the frequency of the received CW, or may be offset from the frequency of the received CW.
  • the offset size depends on the hardware characteristics of terminal 101.
  • the offset may be a fixed value; or, if supported by the hardware of terminal 101, the offset may include multiple fixed values or a dynamically adjustable value.
  • the terminal 101 can transmit uplink information based on amplitude modulation, such as OOK modulation.
  • OOK modulation the terminal 101 uses the CW to reflect the energetic signal to transmit the uplink information to the UR 105.
  • the terminal 101 may send uplink information based on non-amplitude modulation, where the non-amplitude modulation method includes a frequency modulation method or a phase modulation method.
  • UR 105 receives uplink information sent by terminal 101 .
  • UR105 can be an intermediate node, a base station or other terminal equipment.
  • the names of information, etc. are not limited to the names described in the embodiments, and terms such as “information”, “message”, “signal”, “signaling”, “report”, “configuration”, “indication”, “instruction”, “command”, “channel”, “parameter”, “domain”, and “field” can be used interchangeably.
  • "obtain”, “get”, “get”, “receive”, “transmit”, “bidirectional transmission”, “send and/or receive” can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.
  • radio wireless
  • RAN radio access network
  • AN access network
  • RAN-based and the like
  • terms such as “moment”, “time point”, “time”, and “time position” can be replaced with each other, and terms such as “duration”, “period”, “time window”, “window”, and “time” can be replaced with each other.
  • CC component carrier
  • cell cell
  • frequency carrier frequency carrier
  • carrier frequency carrier frequency
  • terms such as “certain”, “preset”, “preset”, “setting”, “indicated”, “a certain”, “any”, and “first” can be interchangeable.
  • “Specific A”, “preset A”, “preset A”, “setting A”, “indicated A”, “a certain A”, “any A”, and “first A” can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.
  • the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values (for example, comparison with a predetermined value), but is not limited thereto.
  • not expecting to receive can be interpreted as not receiving on time domain resources and/or frequency domain resources, or as not performing subsequent processing on the data after receiving it; "not expecting to send” can be interpreted as not sending, or as sending but not expecting the recipient to respond to the content sent.
  • the method involved in the embodiment of the present disclosure may include at least one of steps S2101 to S2102, such as the method including step S2101.
  • Figure 2b is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 2b, the embodiment of the present disclosure relates to a communication method, the method comprising:
  • Step S2201 The network device sends instruction information to the node device.
  • the network device may be a base station or an intermediate node, such as the DSN 102 in the embodiment of Figure 1.
  • the node device may be the CWN 103 in the embodiment of Figure 1.
  • the indication information is used to indicate the number of subcarriers that can be occupied by the CW, or the indication information is used to indicate the uplink bandwidth.
  • the network device controls the number of subcarriers used by CWN 103 to transmit CWs through indication information, thereby controlling the uplink bandwidth of uplink signals transmitted by terminal 101.
  • the network device indicates the uplink bandwidth resources of the uplink signals of terminal 101 through indication information, so that CWN 103 controls the number of subcarriers occupied by its CW transmission.
  • the node device receives the above indication information.
  • the network device may further send indication information to the terminal 101 .
  • Step S2202 The network device sends a downlink instruction to the terminal 101 .
  • the downlink instruction is used to instruct the terminal 101 to transmit uplink information, thereby triggering backscattering of the terminal 101.
  • the terminal 101 may send a corresponding response to the network device or perform a corresponding operation such as executing step S2204.
  • frequency resources can be utilized by dividing the available spectrum into multiple subchannels, each occupying a fixed bandwidth and orthogonal to the frequency domain.
  • the downlink instruction can instruct terminal 101 to use one or more of these subchannels to transmit uplink data.
  • terminal 101 can select one or more subchannels to transmit uplink data using an algorithm.
  • Step S2203 The node device sends a CW to the terminal 101 .
  • step S2203 can refer to the optional implementation of step S2101 and will not be repeated here.
  • step S2204 the terminal 101 sends uplink information based on backscatter according to the received CW.
  • step S2204 can refer to the optional implementation of step S2102 and will not be repeated here.
  • the method involved in the embodiment of the present disclosure may include at least one of steps S2201 to S2204.
  • Figure 3a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in Figure 3a, the embodiment of the present disclosure relates to a communication method, which is executed by a node device and includes:
  • Step S3101 obtain instruction information.
  • step S3101 can refer to the optional implementation of step S2201 and will not be repeated here.
  • Step S3102 send CW.
  • step S3102 can refer to the optional implementation of step S2101 and will not be repeated here.
  • the method involved in the embodiment of the present disclosure may include at least one of steps S3101 to S3102.
  • FIG3b is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3b, an embodiment of the present disclosure relates to a communication method, which is executed by a node device and includes:
  • Step S3201 sending CW to terminal 101.
  • step S3201 can refer to the optional implementation of step S2101 and will not be repeated here.
  • CW is transmitted on multiple frequency domain units.
  • CW is used for the terminal to send uplink information based on backscatter technology, and the terminal is an Internet of Things terminal that obtains energy from the environment.
  • the frequency domain unit includes one of the following:
  • the CW includes multiple signals with the same bandwidth, and the multiple signals with the same bandwidth are multiplexed based on frequency division multiplexing (FDM) technology; wherein the frequency domain unit is a sub-band.
  • FDM frequency division multiplexing
  • the CW is obtained by orthogonal frequency division multiplexing (OFDM) modulation, or by discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) modulation; wherein the frequency domain unit is a subcarrier.
  • OFDM orthogonal frequency division multiplexing
  • DFT-S-OFDM discrete Fourier transform spread orthogonal frequency division multiplexing
  • the bandwidth of the subcarrier is the same as the bandwidth of the downlink subcarrier corresponding to the downlink information sent by the network device; or,
  • the bandwidth of the subcarrier is defined by the protocol.
  • the number of subcarriers where the CW is located is positively correlated with the uplink bandwidth corresponding to the uplink information sent by the terminal.
  • the method further comprises:
  • Indication information sent by a network device is received, where the indication information is used to indicate the number of subcarriers that a CW can occupy, or the indication information is used to indicate an uplink bandwidth.
  • the waveform function x(t) corresponding to CW satisfies:
  • N represents the number of subcarriers where the CW is located
  • xk (t) represents the waveform of the Kth subcarrier
  • ⁇ ak ⁇ represents the complex-valued symbol on the Kth subcarrier
  • ⁇ f represents the bandwidth of each subcarrier
  • fc represents the center frequency of the lowest-frequency subcarrier
  • ( fc +k ⁇ f) represents the frequency domain position of the Kth subcarrier
  • 2 ⁇ ( fc +k ⁇ f)t represents the phase of the Kth subcarrier at time t.
  • ⁇ ak ⁇ is a constant amplitude zero autocorrelation sequence.
  • the CW has a constant amplitude.
  • the CW has a constant amplitude in the time domain.
  • FIG4a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4a, the embodiment of the present disclosure relates to a communication method, which is executed by terminal 101 and includes:
  • Step S4101 obtain downlink instructions.
  • step S4101 can refer to the optional implementation of step S2202 and will not be repeated here.
  • Step S4102 obtain CW.
  • step S4102 can refer to the optional implementation of step S2101 and will not be repeated here.
  • Step S4103 Send uplink information based on backscatter according to the received CW.
  • step S4103 can refer to the optional implementation of step S2102 and will not be repeated here.
  • the method involved in the embodiment of the present disclosure may include at least one of steps S4101 to S4103.
  • FIG4b is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4b, the embodiment of the present disclosure relates to a communication method, which is executed by terminal 101 and includes:
  • Step S4201 Receive a CW sent by a node device.
  • step S4201 can refer to the optional implementation of step S2101 and will not be repeated here.
  • CW is transmitted on multiple frequency domain units.
  • CW is used for the terminal to send uplink information based on backscatter technology, and the terminal is an Internet of Things terminal that obtains energy from the environment.
  • the frequency domain unit includes one of the following:
  • the CW includes multiple signals with the same bandwidth, which are composited based on FDM technology; wherein the frequency domain unit is a sub-band, and the total bandwidth of the multiple sub-bands where the CW is located is greater than the sum of the multiple bandwidths.
  • the CW is obtained through OFDM modulation, or through DFT-S-OFDM modulation; wherein the frequency domain unit is a subcarrier.
  • the bandwidth of the subcarrier is the same as the bandwidth of the downlink subcarrier corresponding to the downlink information sent by the network device; or,
  • the bandwidth of the subcarrier is defined by the protocol.
  • the number of subcarriers where the CW is located is positively correlated with the uplink bandwidth corresponding to the uplink information sent by the terminal.
  • the waveform function x(t) corresponding to CW satisfies:
  • N represents the number of subcarriers where the CW is located
  • xk (t) represents the waveform of the Kth subcarrier
  • ⁇ ak ⁇ represents the complex-valued symbol on the Kth subcarrier
  • ⁇ f represents the bandwidth of each subcarrier
  • fc represents the center frequency of the lowest-frequency subcarrier
  • ( fc +k ⁇ f) represents the frequency domain position of the Kth subcarrier
  • 2 ⁇ ( fc +k ⁇ f)t represents the phase of the Kth subcarrier at time t.
  • ⁇ ak ⁇ is a constant amplitude zero autocorrelation sequence.
  • the method further comprises:
  • Uplink information is sent through amplitude modulation according to a CW, wherein the CW has a constant amplitude.
  • the CW has a constant amplitude in the time domain.
  • the method further comprises:
  • Uplink information is sent in a non-amplitude modulation manner according to CW, wherein the non-amplitude modulation manner includes a frequency modulation manner or a phase modulation manner.
  • FIG5 is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG5 , an embodiment of the present disclosure relates to a communication method, which is executed by a network device and includes:
  • Step S5101 sending instruction information.
  • step S5101 can refer to the optional implementation of step S2201 and will not be repeated here.
  • the method of the disclosed embodiment proposes using multi-carrier signals, particularly multi-carrier OFDM or DFT-S-OFDM signals, as CW in an ambient IoT network. This improves the CW's resistance to frequency domain fading and enhances the reliability of ambient IoT system communications.
  • multi-carrier signals particularly multi-carrier OFDM or DFT-S-OFDM signals
  • CW occupies multiple frequency domain units in the frequency domain.
  • the advantage of occupying multiple frequency domain units is that it can combat deep frequency attenuation to a certain extent, and has some gain compared to single-frequency wireless signals.
  • CW may be a bandwidth signal, for example, the bandwidth of CW is W1 Hz, and CW may be composed of multiple FDM signals, and the bandwidth of each signal is W2 Hz.
  • the frequency domain unit may be a subcarrier.
  • the CW may be generated by an OFDM modulation method or a DFT-S-OFDM method.
  • the bandwidth of a single subcarrier may be the same as the downlink subcarrier of the OFDM modulated signal sent by the DSN, or may be a subcarrier bandwidth defined by the protocol.
  • the CW signal has a constant amplitude in the time domain, so that the device can transmit uplink information through amplitude modulation during backscattering.
  • the device cannot use standard amplitude modulation to transmit uplink information during backscatter.
  • OOK modulation for example, when sending a "1,” an energetic time-domain signal is reflected, and when sending a "0,” no signal is reflected.
  • Other non-amplitude modulation methods such as frequency modulation and phase modulation, can also be used.
  • the expression for CW can be written as a k can be considered as a complex-valued symbol on subcarrier k.
  • ⁇ a k ⁇ can be obtained through DFT transformation.
  • the frequency domain sequence ⁇ ak ⁇ can be selected as a constant amplitude zero autocorrelation sequence, such as a ZC sequence.
  • the time domain sequence corresponding to the frequency domain sequence also has the characteristic of constant amplitude.
  • the number of subcarriers occupied by the CW is positively correlated with the bandwidth of the uplink signal sent by the device after backscattering (for example, the bandwidth of the uplink signal sent by the device is equal to the total bandwidth of the multiple subcarriers occupied by the CW).
  • the bandwidth of the uplink signal sent by the device is equal to the total bandwidth of the multiple subcarriers occupied by the CW.
  • the more subcarriers occupied by the CW the greater the uplink bandwidth of the signal sent by the device during backscattering.
  • the network can control the bandwidth of the device's uplink signal by controlling the number of subcarriers in the CW sent by the CWN.
  • the network can also control the number of subcarriers occupied by the device's uplink signal by indicating the device's uplink signal bandwidth resources.
  • the embodiments of the present disclosure further provide an apparatus for implementing any of the above methods.
  • an apparatus comprising units or modules for implementing each step performed by a terminal in any of the above methods.
  • another apparatus comprising units or modules for implementing each step performed by a node device or network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.
  • a node device or network device e.g., an access network device, a core network function node, a core network device, etc.
  • the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated.
  • the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions.
  • the processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device.
  • CPU central processing unit
  • microprocessor a microprocessor
  • the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits.
  • the above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), and the functions of some or all of the above units or modules are realized by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be implemented by a programmable logic device (PLD).
  • ASIC application-specific integrated circuit
  • PLD programmable logic device
  • FPGA field programmable gate array
  • All units or modules of the above devices can be implemented in the form of software called by the processor, or in the form of hardware circuits.
  • the system can be implemented in the form of a processor calling software, or partially implemented in the form of a processor calling software, and the rest implemented in the form of a hardware circuit.
  • the processor is a circuit with signal processing capabilities.
  • the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP).
  • the processor can implement certain functions through the logical relationship of a hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable.
  • the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA.
  • ASIC application-specific integrated circuit
  • PLD programmable logic device
  • the process of the processor loading a configuration document to implement the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules.
  • it can also be a hardware circuit designed for artificial intelligence, which can be understood as ASIC, such as the Neural Network Processing Unit (NPU), the Tensor Processing Unit (TPU), the Deep Learning Processing Unit (DPU), etc.
  • FIG. 6a is a schematic diagram of the node device structure proposed in an embodiment of the present disclosure.
  • node device 6100 may include at least one of a transceiver module 6101 and a processing module 6102.
  • transceiver module 6101 is configured to transmit continuous electromagnetic waves (CWs) to a terminal.
  • the CWs are transmitted across multiple frequency domain units and are used by the terminal to send uplink information based on backscatter technology.
  • the terminal is an IoT terminal that obtains energy from the environment.
  • the transceiver module 6101 is configured to execute at least one of the communication steps, such as sending and/or receiving, performed by the node device 6100 in any of the above methods, which are not described in detail here.
  • the processing module 6102 is configured to execute at least one of the other steps performed by the node device 6100 in any of the above methods, which are not described in detail here.
  • FIG. 6b is a schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure.
  • terminal 6200 may include at least one of a transceiver module 6201 and a processing module 6202.
  • transceiver module 6201 is configured to receive a CW transmitted by a node device.
  • the CW is transmitted across multiple frequency domain units and is used by the terminal to send uplink information based on backscatter technology.
  • the terminal is an IoT terminal that obtains energy from the environment.
  • the transceiver module 6201 is configured to execute at least one of the communication steps of sending and/or receiving performed by the terminal 6200 in any of the above methods, which are not described in detail here.
  • the processing module 6202 is configured to execute at least one of the other steps performed by the terminal 6200 in any of the above methods, which are not described in detail here.
  • FIG. 6c is a schematic diagram of the structure of a network device proposed in an embodiment of the present disclosure.
  • network device 6300 may include at least one of a transceiver module 6301 and a processing module 6302.
  • transceiver module 6301 is configured to send indication information to a node device, where the indication information indicates the number of subcarriers that a CW can occupy, or indicates the uplink bandwidth corresponding to the transmission of uplink information by a terminal.
  • the transceiver module may include a transmitting module and/or a receiving module, and the transmitting module and the receiving module may be separate or integrated.
  • the transceiver module may be interchangeable with the transceiver.
  • the processing module can be a single module or can include multiple submodules.
  • the multiple submodules respectively execute all or part of the steps required to be executed by the processing module.
  • the processing module can be interchangeable with the processor.
  • FIG. 7a is a schematic diagram of the structure of a communication device 7100 proposed in an embodiment of the present disclosure.
  • Communication device 7100 can be a node device or network device (e.g., an access network device, a core network device, etc.), or a terminal (e.g., a user device, etc.). It can also be a chip, chip system, or processor that supports a network device to implement any of the above methods, or a chip, chip system, or processor that supports a terminal to implement any of the above methods.
  • Communication device 7100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.
  • the communication device 7100 includes one or more processors 7101.
  • the processor 7101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit.
  • the baseband processor can be used to process the communication protocol and communication data
  • the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data.
  • the communication device 7100 is used to perform any of the above methods.
  • one or more processors 7101 are used to call instructions to enable the communication device 7100 to perform any of the above methods.
  • the communication device 7100 further includes one or more transceivers 7102.
  • the transceiver 7102 performs at least one of the communication steps, such as sending and/or receiving, in the above-described method, and the processor 7101 performs at least one of the other steps.
  • the transceiver may include a receiver and/or a transmitter, and the receiver and transmitter may be separate or integrated.
  • transceiver transceiver unit, transceiver, transceiver circuit, interface circuit, and interface
  • transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably
  • receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.
  • the communication device 7100 further includes one or more memories 7103 for storing data. Alternatively, all or part of the memories 7103 may be located outside the communication device 7100. In alternative embodiments, the communication device 7100 may include one or more interface circuits 7104. Optionally, the interface circuits 7104 are connected to the memories 7103 and may be configured to receive data from the memories 7103 or other devices, or to send data to the memories 7103 or other devices. For example, the interface circuits 7104 may read data stored in the memories 7103 and send the data to the processor 7101.
  • the communication device 7100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7a.
  • the communication device may be an independent device or may be part of a larger device.
  • the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (7) others, etc.
  • FIG7 b is a schematic diagram of the structure of a chip 7200 according to an embodiment of the present disclosure. If the communication device 7100 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 7200 shown in FIG7 b , but the present disclosure is not limited thereto.
  • the chip 7200 includes one or more processors 7201.
  • the chip 7200 is configured to execute any of the above methods.
  • chip 7200 further includes one or more interface circuits 7202. Alternatively, terms such as interface circuit, interface, and transceiver pins may be used interchangeably.
  • chip 7200 further includes one or more memories 7203 for storing data. Alternatively, all or part of memory 7203 may be located external to chip 7200.
  • interface circuit 7202 is connected to memory 7203 and may be used to receive data from memory 7203 or other devices, or may be used to send data to memory 7203 or other devices. For example, interface circuit 7202 may read data stored in memory 7203 and send the data to processor 7201.
  • the interface circuit 7202 performs at least one of the communication steps, such as sending and/or receiving, in the above-described method.
  • the interface circuit 7202 performing the communication steps, such as sending and/or receiving, in the above-described method means that the interface circuit 7202 performs data exchange between the processor 7201, the chip 7200, the memory 7203, or the transceiver device.
  • the processor 7201 performs at least one of the other steps.
  • modules and/or devices described in various embodiments can be arbitrarily combined or separated according to circumstances.
  • some or all steps can also be performed collaboratively by multiple modules and/or devices, which is not limited here.
  • the present disclosure also proposes a storage medium having instructions stored thereon.
  • the storage medium is an electronic storage medium.
  • the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices.
  • the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a temporary storage medium.
  • the present disclosure also provides a program product, which, when executed by the communication device 7100, enables the communication device 7100 to perform any of the above methods.
  • the program product is a computer program product.
  • the present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.
  • the node device provides energy or excitation signals to the terminal by sending CW so that the terminal can use CW for backscattering.
  • CW occupies multiple frequency domain units, which can effectively improve the performance of CW in resisting frequency domain fading, thereby improving the reliability of communication.

Landscapes

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

Abstract

La présente divulgation se rapporte à un procédé, à un appareil et à un système de communication, à un dispositif de nœud et à un support de stockage. Le procédé consiste à : envoyer un CW à un terminal, le CW étant transmis sur une pluralité d'unités de domaine fréquentiel, le CW étant utilisé pour que le terminal envoie des informations de liaison montante sur la base d'une technologie de rétrodiffusion, et le terminal étant un terminal de l'Internet des objets qui obtient de l'énergie à partir de l'environnement. Dans le procédé de la présente divulgation, un dispositif de nœud fournit de l'énergie ou un signal d'excitation pour le terminal par l'envoi d'un CW, de telle sorte que le terminal peut utiliser le CW pour la rétrodiffusion ; de plus, le CW occupe une pluralité d'unités de domaine fréquentiel, de telle sorte que les performances du CW en termes de résistance à l'atténuation dans le domaine fréquentiel peuvent être efficacement améliorées, améliorant la fiabilité de communication.
PCT/CN2024/074764 2024-01-30 2024-01-30 Procédé, appareil et système de communication, dispositif de nœud et support de stockage Pending WO2025160761A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2024/074764 WO2025160761A1 (fr) 2024-01-30 2024-01-30 Procédé, appareil et système de communication, dispositif de nœud et support de stockage
CN202480000369.4A CN118140568A (zh) 2024-01-30 2024-01-30 通信方法、节点设备、装置、系统及存储介质

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2024/074764 WO2025160761A1 (fr) 2024-01-30 2024-01-30 Procédé, appareil et système de communication, dispositif de nœud et support de stockage

Publications (1)

Publication Number Publication Date
WO2025160761A1 true WO2025160761A1 (fr) 2025-08-07

Family

ID=91236329

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2024/074764 Pending WO2025160761A1 (fr) 2024-01-30 2024-01-30 Procédé, appareil et système de communication, dispositif de nœud et support de stockage

Country Status (2)

Country Link
CN (1) CN118140568A (fr)
WO (1) WO2025160761A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025255750A1 (fr) * 2024-06-12 2025-12-18 北京小米移动软件有限公司 Procédé de positionnement, dispositif réseau, terminal et support de stockage
WO2026011370A1 (fr) * 2024-07-10 2026-01-15 北京小米移动软件有限公司 Procédé de communication, dispositif de communication, système de communication, support de stockage et produit programme
CN121356611A (zh) * 2024-07-16 2026-01-16 中兴通讯股份有限公司 通信方法、通信设备及存储介质
WO2026031063A1 (fr) * 2024-08-08 2026-02-12 Apple Inc. Commande de nœud d'onde porteuse pour communication ido ambiant
WO2026031092A1 (fr) * 2024-08-08 2026-02-12 Apple Inc. Commande de nœud d'onde porteuse pour communication ido ambiant
WO2026060611A1 (fr) * 2024-09-19 2026-03-26 Nec Corporation Dispositifs, procédés, et support de communication

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200266673A1 (en) * 2017-09-29 2020-08-20 University Of Washington Wireless power systems including determination of channel transfer function from backscatter signals
CN113922937A (zh) * 2021-09-01 2022-01-11 中国信息通信研究院 一种无线信号传输方法和设备
CN115996166A (zh) * 2021-10-19 2023-04-21 华为技术有限公司 数能同传方法及装置
WO2023236868A1 (fr) * 2022-06-09 2023-12-14 维沃移动通信有限公司 Procédé et appareil de configuration de communication de rétrodiffusion, et dispositif côté réseau et terminal
WO2023236144A1 (fr) * 2022-06-09 2023-12-14 Oppo广东移动通信有限公司 Procédé et dispositif de communication sans fil
WO2024000596A1 (fr) * 2022-07-01 2024-01-04 Zte Corporation Procédé, dispositif et produit programme d'ordinateur pour la communication sans fil
WO2024016197A1 (fr) * 2022-07-20 2024-01-25 Qualcomm Incorporated Techniques de réduction d'interférence entre des dispositifs sans fil passifs

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200266673A1 (en) * 2017-09-29 2020-08-20 University Of Washington Wireless power systems including determination of channel transfer function from backscatter signals
CN113922937A (zh) * 2021-09-01 2022-01-11 中国信息通信研究院 一种无线信号传输方法和设备
CN115996166A (zh) * 2021-10-19 2023-04-21 华为技术有限公司 数能同传方法及装置
WO2023236868A1 (fr) * 2022-06-09 2023-12-14 维沃移动通信有限公司 Procédé et appareil de configuration de communication de rétrodiffusion, et dispositif côté réseau et terminal
WO2023236144A1 (fr) * 2022-06-09 2023-12-14 Oppo广东移动通信有限公司 Procédé et dispositif de communication sans fil
WO2024000596A1 (fr) * 2022-07-01 2024-01-04 Zte Corporation Procédé, dispositif et produit programme d'ordinateur pour la communication sans fil
WO2024016197A1 (fr) * 2022-07-20 2024-01-25 Qualcomm Incorporated Techniques de réduction d'interférence entre des dispositifs sans fil passifs

Also Published As

Publication number Publication date
CN118140568A (zh) 2024-06-04

Similar Documents

Publication Publication Date Title
CN118140568A (zh) 通信方法、节点设备、装置、系统及存储介质
WO2025000303A1 (fr) Procédé d'indication d'informations, terminal, dispositif de réseau, système de communication et support de stockage
WO2025160774A1 (fr) Procédé de communication, terminal, dispositif, appareil, système, support et programme
WO2025160778A1 (fr) Procédé et appareil de configuration de canal, dispositif de communication, système de communication et support de stockage
WO2025160984A1 (fr) Procédé de détermination de puissance de transmission, terminal, appareil, système et support de stockage
WO2025160857A1 (fr) Procédés et appareils de commande, et support de stockage
WO2025217777A1 (fr) Procédé d'inventaire, ainsi qu'appareil et support de stockage
WO2025160857A9 (fr) Procédés et appareils de commande, et support de stockage
WO2025175447A1 (fr) Procédés de communication, dispositif de communication, système de communication et support de stockage
WO2025199830A1 (fr) Procédé de réception ou de transmission d'informations de liaison descendante, terminal, dispositif, système et support
WO2025199965A1 (fr) Procédé de commande de communication, dispositif de communication, système de communication et support de stockage
WO2025199898A1 (fr) Procédé d'envoi d'informations de liaison descendante, procédé de réception d'informations de liaison descendante, dispositif de réseau, terminal et support de stockage
WO2026011370A1 (fr) Procédé de communication, dispositif de communication, système de communication, support de stockage et produit programme
WO2025199910A1 (fr) Procédé de communication, premier dispositif, second dispositif et support de stockage
WO2025231665A1 (fr) Procédé d'envoi d'informations de réponse, procédé de réception d'informations de réponse, dispositifs de réseau, terminaux et support
CN121100569A (zh) 发送和接收同步信号的方法、装置及存储介质
WO2025199899A1 (fr) Procédé de commande de communication, dispositif de communication, système de communication et support d'enregistrement
WO2025236210A1 (fr) Procédé et appareil d'envoi ou de réception d'informations d'instruction de contrôle de puissance, et dispositif et support
WO2025160980A1 (fr) Procédé de transmission d'informations, dispositif et support de stockage
WO2025025186A1 (fr) Procédés de communication, terminaux, dispositifs de réseau, et support de stockage
WO2025213365A1 (fr) Procédé de communication, dispositif de communication, système de communication et support de stockage
WO2026025223A1 (fr) Procédé de communication, terminal, dispositif réseau et support de stockage
WO2025111891A1 (fr) Procédé, appareil et système de communication, et support de stockage
WO2025156118A1 (fr) Procédé de communication basé sur l'internet des objets ambiant (ido-a), système de communication et support de stockage
WO2026085717A1 (fr) Procédé de synchronisation, dispositif et support de stockage

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24920836

Country of ref document: EP

Kind code of ref document: A1