WO2023236826A1 - 反向散射通信的接入方法、装置、终端及网络侧设备 - Google Patents

反向散射通信的接入方法、装置、终端及网络侧设备 Download PDF

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Publication number
WO2023236826A1
WO2023236826A1 PCT/CN2023/097388 CN2023097388W WO2023236826A1 WO 2023236826 A1 WO2023236826 A1 WO 2023236826A1 CN 2023097388 W CN2023097388 W CN 2023097388W WO 2023236826 A1 WO2023236826 A1 WO 2023236826A1
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WIPO (PCT)
Prior art keywords
information
command
backscatter
sent
feedback information
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PCT/CN2023/097388
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English (en)
French (fr)
Inventor
李东儒
吴凯
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维沃移动通信有限公司
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Publication of WO2023236826A1 publication Critical patent/WO2023236826A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/22—Scatter propagation systems, e.g. ionospheric, tropospheric or meteor scatter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/14—Access restriction or access information delivery, e.g. discovery data delivery using user query or user detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information

Definitions

  • the present application belongs to the field of wireless communication technology, and specifically relates to an access method, device, terminal and network side equipment for backscatter communication.
  • backscatter communication equipment can use radio frequency signals from other devices or the environment to perform signal modulation to transmit information.
  • the backscatter communication device can be an Internet of Things (IoT) device such as a tag device (Tag).
  • IoT Internet of Things
  • Tag tag device
  • the reader (Reader) in the system can directly interact with the tag device and can be triggered by excitation carrier waves. Backscatter from the tag device.
  • third-party devices can also be included.
  • the third-party device can serve as a relay device between the reader and the tag device, although the third-party device in some scenarios It can assist the transmission between the reader and the tag device, but it also increases the complexity of the communication process.
  • Embodiments of the present application provide an access method, device, terminal and network-side device for backscatter communication, which can solve the problem of increased complexity of the communication process and increased communication delay in backscatter communication scenarios involving third-party devices. The problem of reduced communication efficiency.
  • a backscatter communication access method applied to a first device, and the method includes:
  • the first device listens for first backscatter information sent by the second device based on a first command sent by a third device ;
  • the first device sends a second command to the second device according to the monitoring situation
  • the first command is different from the second command.
  • an access device for backscatter communication including:
  • the first execution module is configured to monitor the first backscatter information sent by the second device, the first backscatter information is sent by the second device based on the first command, and the first command is sent by the second device. Sent by third device;
  • the first transmission module is used to send the second command to the second device according to the monitoring situation
  • the first command is different from the second command.
  • a backscatter communication access method is provided, applied to a third device, and the method includes:
  • the third device receives first feedback information and/or second feedback information from the first device
  • the first feedback information is related to the first backscattering information of the second device
  • the second feedback information is related to the first backscattering information and/or the second backscattering information of the second device.
  • Information related, the first backscatter information is triggered by a first command
  • the first command is sent by the third device
  • the second backscatter information is triggered by a second command
  • the second command is The second device sends, the first command is different from the second command
  • the first backscatter information is different from the second backscatter information.
  • an access device for backscatter communication including:
  • a second transmission module that receives first feedback information and/or second feedback information from the first device
  • the second execution module obtains the query result of the second device according to the first feedback information and/or the second feedback information;
  • the first feedback information is related to the first backscattering information of the second device
  • the second feedback information is related to the first backscattering information and/or the second backscattering information of the second device.
  • Information related, the first backscatter information is triggered by a first command
  • the first command is sent by the third device
  • the second backscatter information is triggered by a second command
  • the second command is The second device sends, the first command is different from the second command
  • the first backscatter information is different from the second backscatter information.
  • a terminal in a fifth aspect, includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions are executed by the processor, the following implementations are implemented: The steps of the method described in one aspect.
  • a terminal including a processor and a communication interface, wherein the processor is used by a first device to monitor first backscatter information sent by a second device, and the first backscatter information is Sent by the second device based on the first command, the communication interface is used to send the second command to the second device according to the monitoring situation.
  • a network side device in a seventh aspect, includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions are executed by the processor.
  • a network side device including a processor and a communication interface, wherein the processor is configured to obtain the query result of the second device according to the first feedback information and/or the second feedback information, and the The communication interface is used for receiving first feedback information and/or second feedback information from the first device.
  • a ninth aspect provides an access system for backscatter communication, including: a first device, a second device, and a third device.
  • the first device can be used to perform backscatter communication as described in the first aspect.
  • the third device may be configured to perform the steps of the access method for backscatter communication as described in the third aspect.
  • a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the method described in the first aspect are implemented. Or implement the steps of the method as described in the third aspect.
  • a chip in an eleventh aspect, includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the method described in the first aspect. method, or implement a method as described in the third aspect.
  • a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement as described in the first aspect
  • the first device sends a second command to the second device according to the monitoring situation of the first backscatter information, wherein the first backscatter information is triggered by the first command and the third A command is sent by the third device. Therefore, the first device assists the third device in sending part of the command, thereby reducing the feedback process to the third device and reducing the delay and flow of the three-party backscatter communication. complexity, which is conducive to improving communication efficiency.
  • Figure 1 is a schematic structural diagram of a wireless communication system applicable to the embodiment of the present application.
  • Figure 2 is a schematic flowchart of a backscatter communication access method provided by an embodiment of the present application
  • FIG. 3 is a schematic flowchart of another backscatter communication access method provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of another backscatter communication access method provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of another backscatter communication access method provided by an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of another backscatter communication access method provided by an embodiment of the present application.
  • Figure 7 is a schematic diagram of the signaling flow of a backscatter communication access method provided by an embodiment of the present application.
  • Figure 8 is a schematic structural diagram of an access device for backscatter communication provided by an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of another backscatter communication access method provided by an embodiment of the present application.
  • Figure 10 is a schematic structural diagram of another access device for backscatter communication provided by an embodiment of the present application.
  • Figure 11 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • Figure 12 is a schematic structural diagram of a terminal that implements an embodiment of the present application.
  • Figure 13 is a schematic structural diagram of a network-side device that implements an embodiment of the present application.
  • first, second, etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first" and “second” are distinguished objects It is usually one type, and the number of objects is not limited.
  • the first object can be one or multiple.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the related objects are in an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced, LTE-A Long Term Evolution
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • NR New Radio
  • FIG. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable.
  • the wireless communication system includes a first device 11, a third device 12 and a second device 13.
  • the first device may be a terminal 11, and the terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer or a personal digital assistant (Personal Digital Assistant, PDA).
  • Tablet Personal Computer Tablet Personal Computer
  • laptop computer laptop computer
  • PDA Personal Digital Assistant
  • handheld computers netbooks, ultra-mobile personal computers (UMPC), mobile Internet devices (MID), augmented reality (AR)/virtual reality (VR) devices, Robots, wearable devices (Wearable Devices), vehicle user equipment (VUE), pedestrian terminals (Pedestrian User Equipment, PUE), smart homes (home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture etc.), game consoles, personal computers (PCs), teller machines or self-service machines and other terminal-side devices.
  • Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart Bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc.
  • the third device may be a network side device, a reader/writer, etc.
  • the network side device 12 may include an access network device or a core network device, where the access network device may also be called a wireless access network device, a wireless access network device, or a wireless access network device.
  • RAN Radio Access Network
  • Access network equipment may include base stations, Wireless Local Area Network (WLAN) access points or Wireless Fidelity (WiFi) nodes, etc.
  • the base station can be called Node B, Evolved Node B (eNB), access point, Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home B-node, home evolved B-node, transmission and reception point (Transmission Reception Point, TRP) or somewhere else in the field Appropriate terminology, as long as the same technical effect is achieved, the base station is not limited to specific technical terms.
  • eNB Evolved Node B
  • BTS Base Transceiver Station
  • BSS Basic Service Set
  • ESS Extended Service Set
  • TRP Transmission Reception Point
  • Core network equipment may include but is not limited to at least one of the following: core network nodes, core network functions, mobility management entities (Mobility Management Entity, MME), access mobility management functions (Access and Mobility Management Function, AMF), session management functions (Session Management Function, SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Service Discovery function (Edge Application Server Discovery Function, EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), centralized network configuration ( Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (Local NEF, or L-NEF), Binding Support Function (Binding Support Function, BSF), application function (Application Function, AF), etc.
  • MME Mobility Management Entity
  • AMF Access Mobility Management Function
  • SMF Session Management Function
  • UPF User Plane Function
  • PCF Policy Control Function
  • the third device 13 may be a backscatter communication device, such as a passive Internet of Things device or a tag device.
  • the embodiment of the present application provides a backscatter communication access method.
  • the method is executed by the first device in the backscatter communication system.
  • the method can be installed on the first device.
  • Backscatter means that backscatter communication equipment uses radio frequency signals from other devices or the environment to perform signal modulation to transmit information.
  • Backscatter communications equipment which may be:
  • Passive tag (Tag) equipment belongs to passive Internet of Things (IoT) equipment (Passive-IoT);
  • Tags with active sending capabilities can send information to the reader without relying on backscattering of the incident signal.
  • the backscatter communication device is illustrated by taking Tag as an example.
  • Radio Frequency Identification RFID
  • Query a query command
  • Tag responds (Reply) in inventory mode. That is, a 16-bit random sequence (Random Sequence 16, RN16) is generated for the reader. Then the reader sends the sequence to the Tag through an Acknowledgment (ACK) command, and the Tag sends the relevant data to the reader.
  • ACK Acknowledgment
  • backscatter communication can be understood as the transmission of backscatter channels or signals, where the backscatter channel or signal transmission includes: (1) excitation carrier, (2) control commands, and (3) backscatter information. specific:
  • Excitation carrier in one embodiment, the excitation carrier may be sent to the tag by the network side device, or may be sent to the tag by the terminal.
  • Control command such as: selection command, query command, repeat query command, reply command, read command, write command, random request command, etc.; in one embodiment, the control command can be sent by the network
  • the side device sends it to the tag, or it can be sent to the tag by the terminal.
  • control command may include at least one of the following: selection type command, inventory type command, access command; wherein the selection type command includes at least one of the following: selection command (a specific selection command), Inventory command, sorting command; the inventory type command includes at least one of the following: query command (a specific query command), adjustment query command, repeat query command; the access command includes at least one of the following: random request command, Read command, write command, destroy command, lock command, access command, security-related access command, file management-related access command.
  • the Select type command is necessary. Since tags have multiple attributes, based on the standards and strategies set by the user, using the Select type command to change certain attributes and flags means artificially selecting or delineating a specific tag group. You can only perform inventory identification or access operations on them, which will help reduce conflicts and repeated identification and speed up identification.
  • the inventory type command is used to start an inventory.
  • the query command is used to start a round of inventory and determine which tags participate in the round of inventory;
  • the adjustment query command is used to adjust the number of tags' original receiving times (Slots);
  • the repeat query command is used to reduce the number of tag Slots.
  • the random request (Req_RN) command requires the tag to generate a random number; the read command is used to read data from a certain location in the tag's storage; the write command is used to write data to the tag's storage.
  • the destroy command can prevent the leakage of privacy and the tag can no longer be used; the lock command is used to prevent the tag from being written to, preventing the data from being arbitrarily modified; the access command is used to enable the tag to be opened when the tag has a password.
  • the (Open) state is converted to the protection (Secure) state; security-related access commands are used to ensure tag security; file management-related access commands can be used to manage files within the tag.
  • Backscatter information such as: Tag identification information (such as a 16-bit random number that temporarily represents the Tag identity during the query process), electronic product code information, Tag status information, etc.
  • the backscattering channel or signal may be sent by the tag to the terminal through backscattering, or may be sent by the tag to the network side device through backscattering.
  • the information transmission between the interrogator or reader and tag includes:
  • Select operation The process in which the reader selects a tag group for subsequent counting or password-challenges the tag group for subsequent identity verification. Selection operations include the select command (select) and Challenge command (Challenge).
  • Inventory operation the process of the reader identifying the tag.
  • the reader starts the inventory by transmitting query commands in one of four sessions.
  • One or more tags may reply.
  • the reader detects a single tag reply and requests the Product Code (PC), optional Extended Protocol Control (XPC) word, Electronic Product Code (EPC) and Cyclical Redundancy Check (Cyclical) from the tag. Redundancy Check-16, CRC-16).
  • PC Product Code
  • XPC Extended Protocol Control
  • EPC Electronic Product Code
  • Cyclical Redundancy Check Cyclical Redundancy Check
  • CRC-16 Cyclical Redundancy Check
  • Access operation The process in which the reader and writer conduct transactions (read, write, verify or otherwise participate) with a single tag.
  • the reader/writer individually identifies and uniquely identifies the tag before accessing it.
  • Access includes multiple commands.
  • the first command or the second command mentioned in the embodiment of this application may specifically include: a command between a reader and a tag, as shown in Table 1.
  • the backscatter communication access method includes the following steps.
  • the first device monitors the first backscatter information sent by the second device, where the first backscatter information is sent by the second device based on the first command.
  • the backscatter communication system may include a network side device 12, a terminal 11 and a backscatter communication device 13 as shown in Figure 1, wherein the network side device 12 may specifically be a base station NR Node (NR Node). B, gNB), etc., the backscatter communication device may be a tag device (Tag).
  • the network side device 12 may specifically be a base station NR Node (NR Node). B, gNB), etc.
  • the backscatter communication device may be a tag device (Tag).
  • the network side device and the terminal can respectively send commands to the backscatter communication device.
  • the certain operation may be a query operation on the backscatter communication device, that is, the first command and the second command are used to instruct the second device to perform a query operation, and the first command and the second command are different .
  • the first device is one of a network side device and a terminal
  • the third device is the other of the network side device and a terminal
  • the second device is a backscatter communication device
  • the third device is a backscatter communication device.
  • the third device may send a first command to the second device, and the first device may send a second command to the second device.
  • the first device is a terminal
  • the third device is a network-side device.
  • the first device is a network side device
  • the third device is a terminal
  • the first device is a terminal and the third device is a network-side device.
  • the third device first sends a first command to the second device to initiate an inventory or questioning process of the second device.
  • the first command includes at least one of the following:
  • Selection commands such as select, challenge, and sort
  • Inventory commands may include Query, QueryAdjust, and QueryRep;
  • Access commands may include Req_RN, Read, Write, Lock, Kill, Access, BlockWrite, BlockErase, BlockPermalock, Authenticate, ReadBuffer, SecureComm, AuthComm, KeyUpdate, Untraceable, FileOpen, FileList, FilePrivilege, FileSetup and TagPrivilege.
  • the second device may send the first backscattering information in a backscattering manner according to the first command.
  • the first backscatter information includes at least one of the following:
  • the identification information of the second device such as a 16-bit random number (RN16) representing the identity of the tag;
  • the electronic product code information of the second device such as PC and EPC;
  • the handle information (handle) of the second device is the handle information (handle) of the second device.
  • the first device monitors the first backscatter information sent by the second device.
  • the timing for the first device to monitor the first backscatter information of the second device may be a default state of the first device, or the monitoring may be started when it is determined that the backscatter system is in the inventory stage, Or start monitoring when it is determined that the second device performs a challenge operation.
  • the first device sends a second command to the second device according to the monitoring situation. Wherein, the first command is different from the second command.
  • the first device's monitoring of the first backscatter information of the second device may include whether the first backscatter information of the second device is successfully received, and may also include whether the first backscatter information of the second device is successfully received. Whether the content obtained in the scattering information is correctly parsed may also include situations where the current reader/writer does not want to reply to the first backscattering information, which is not limited here.
  • the first device sends a second command to the second device according to the monitoring situation.
  • the second command may include at least one of the following:
  • the second command may also be used to indicate successful reception or unsuccessful reception of the first backscatter information.
  • the second command sent by the first device to the second device may include a confirmation indicating successful reception. message (ACK).
  • ACK confirmation indicating successful reception. message
  • the first device fails to receive the first backscatter information of the second device or the current reader does not want to reply to the first backscatter information
  • the first device sends a message to the first backscatter information.
  • the second command sent by the second device may include a non-acknowledgment command (Negative Acknowledgment, NAK). See Table 1 for details on the uses of NAK.
  • the failure of the first device to receive the first backscatter information of the second device may specifically be failure to receive the first backscatter information or incorrect reception of the first backscatter information.
  • the reason may be that multiple second devices collide, resulting in multiple first backscattering information being sent at the same time, etc., which is not specifically limited here.
  • the first device may send the first backscatter information to the third device.
  • the third device successfully obtains the backscattering information of the second device based on the feedback information, thereby realizing inventory or access to the second device, thereby further performing subsequent reading on the second device. write operation.
  • the embodiments of the present application monitor the first backscatter information sent by the second device, and the first backscatter information is sent by the second device based on the first command. , and then sends a second command to the second device according to the monitoring situation, and the third device triggers a query operation on the second device through the first command, and the second device performs the subsequent query operation, and assists the third device through the first device.
  • the three devices send partial commands, which reduces the feedback process to the third device, reduces the delay and process complexity of the three-party backscatter communication, and is beneficial to improving communication efficiency.
  • the method further includes:
  • the first device monitors the second backscatter information sent by the second device, the second backscatter information is triggered by the second command, and the first backscatter information is consistent with the second backscatter information.
  • the two backscattered information are different.
  • the second device After the first device sends a second command to the second device, in one implementation, if the second command indicates that the first backscattering information was not successfully received, the second device The device returns to the Arbitrate state to wait for receiving the first command sent by the third device again.
  • the second device may send the second backscattering information according to the received second command through backscattering.
  • the second backscattering information includes at least one of the following:
  • the identification information of the second device is the identification information of the second device.
  • the handle information of the second device is the handle information of the second device.
  • the contents of the first backscatter information and the second backscatter information sent by the second device are also different.
  • the first backscatter information The information may include identification information of the second device, and the second backscatter information may include electronic product code information of the second device.
  • the first backscatter information is used.
  • the backscatter information includes the RN16 corresponding to the second device, and the second backscatter information includes the PC or EPC corresponding to the second device. An example is given as an example.
  • the second device uses backscattering to send the first backscattering information and the second backscattering information.
  • a corresponding excitation carrier needs to be sent to the second device.
  • the excitation carrier is based on Specific settings may be sent by the first device or the third device.
  • both the first device and the third device may send corresponding excitation carriers.
  • the first device and the third device may send the corresponding command to the second device, and then Send the corresponding excitation carrier to the second device.
  • the third device sends a third excitation carrier (Carrier Wave 3, CW3) after sending the first command to the second device.
  • the third excitation carrier CW3 is used by the second device to perform the first backscattering. Information backscatter.
  • the third device needs to send the first command and the third excitation carrier CW3 so that no overlap occurs.
  • the first device sends a first excitation carrier CW1 for backscattering the second backscatter information, and the first excitation carrier CW1 is used by the second device to perform the third 2. Backscattering information.
  • the first excitation carrier CW1 is used by the second device to perform the third 2. Backscattering information. In order to ensure that there is no conflict with the second command, there is no overlap in time domain between the second command and the first excitation carrier.
  • only one of the first device or the third device can send the excitation carrier.
  • only the network side device, that is, the third device can send the excitation carrier.
  • the third device sends a third excitation carrier CW3 after sending the first command to the second device.
  • the third excitation carrier CW3 is used by the second device to backscatter the first backscattering information.
  • the second backscattered information of the second device may be backscattered according to the second excitation carrier CW2, where the second excitation carrier is sent by the third device, that is, the third device sends the third device after step S120.
  • the third device sends the second excitation carrier CW2 to the second device.
  • the time unit It can be milliseconds or time slots, etc.;
  • the third device sends the second excitation carrier CW2 to the second device after the second time interval T2 from the end of the time unit in which the first command is sent by the third device;
  • the second time interval is less than or equal to the first time interval, that is, the third device can send the second excitation after T2 and before T1 from the end time of the time unit where the first command is located.
  • the second excitation carrier CW2 and the third excitation carrier CW3 sent by the third device may use the same excitation carrier, or the first backscattering information and the second backscattering information may be sent according to the second device.
  • the information requirements are set to excitation carriers of different strengths or time lengths, which are not specifically limited here.
  • the second excitation carrier CW2, the third excitation carrier CW3 and the first excitation carrier CW1 sent by the first device may also be the same or different excitation carriers.
  • the embodiments of the present application first monitor the first command sent by the third device, then monitor the first backscattering information of the second device, and monitor the second device after sending the second command.
  • the second backscatter information can thereby reduce the feedback process to the third device, reduce the delay and process complexity of the three-party backscatter communication, and help improve communication efficiency.
  • the method further includes:
  • the first device monitors the first command sent by the third device.
  • the first device can monitor the first command sent by the third device, so that it can predict the content of the first backscatter information triggered by the first command to facilitate determining the correctness of the first backscatter information. wait.
  • the feedback information reported by the first device to the third device may be determined based on the first backscatter information and/or the second backscatter information of the second device.
  • the method further includes:
  • the first device sends second feedback information to the third device.
  • the second feedback information The information is related to the first backscatter information and/or the second backscatter information.
  • the second feedback information may include the content of the second backscatter information, such as the electronic product code information of the second device;
  • the second feedback information may include an indication that the second device does not successfully receive the second backscatter information
  • step S110 the method further includes:
  • the first device sends first feedback information to the third device, where the first feedback information is related to the first backscatter information.
  • the first device may directly send the first feedback information to the third device based on the first backscattering information of the second device, and after completing the sending of the first feedback information, decide whether to send the first feedback information according to actual needs.
  • the first device may directly send the first feedback information to the third device based on the first backscattering information of the second device, and after completing the sending of the first feedback information, decide whether to send the first feedback information according to actual needs.
  • the embodiments of the present application can reduce the number of requests to the third device by sending the first feedback information and/or the second feedback information to the third device after completing the query operation on the second device.
  • the feedback process of the third device reduces the delay and process complexity of three-party backscatter communication, which is beneficial to improving communication efficiency.
  • the third device may send a first command to N second devices in sequence, for sequentially triggering the A query operation is performed, and the first device performs a subsequent query operation on the N second devices, and after obtaining the query results of the N second devices, uniformly reports them to the third device.
  • step S120 if the second command sent by the first device to the second device indicates that the second device successfully receives the first backscattering information of the second device, then after step S120, the The first device needs to perform step S130 to monitor the second backscattering information sent by the second device.
  • step S120 if the second command sent by the first device to the second device indicates that the second device has not successfully received the first backscattering information of the second device, in one implementation As shown in Figure 6, after step S120, the first device may perform step S100 to listen for the first command sent by the third device. In another embodiment, after step S120, the first device may also continue to perform step S130 until the time interval for monitoring the second backscattering information has elapsed, and then perform step S100.
  • the step S140 includes:
  • the first device monitors the first backscatter information and/or the second backscatter information sent by N second devices, the first device sends second feedback information to the third device.
  • the N is a positive integer
  • the second feedback information is related to the first backscattering information and/or the second backscattering information corresponding to the N second devices.
  • the N second devices may be all or part of the second devices in the backscattering system, or may be all or part of the second devices corresponding to the first devices.
  • the first device corresponding to the N second devices is taken as an example for illustration.
  • time interval for the third device to send adjacent first commands to the N second devices is greater than or equal to the third time interval T3.
  • the first device may send the second feedback information within a fourth time interval T4 from the end of the time unit when the third device sends the first first command among the N second devices.
  • the fourth time interval is related to the third time interval. For example, the fourth time interval is greater than or equal to N times the third time interval.
  • the third device may also monitor the second feedback information within the fourth time interval.
  • the third device can successfully obtain the query results of the N second devices based on the received first feedback information and/or the second feedback information, thereby achieving access to the N second devices. Subsequent read and write operations may be further performed on the N second devices.
  • this embodiment of the present application provides a specific implementation of the backscatter communication access method.
  • the method is divided into three stages: selection stage A1, inventory stage A2 and access stage A3.
  • the third device sends a selection command to the device group including N second devices, so that the device group enters the A2 stage.
  • the third device gNB first initiates a query operation to the second device Tag1, that is, sends the first command to Tag1, and after the first command is sent, sends the excitation carrier CW1 to Tag1 for Tag1 to feedback the third - Backscatter information.
  • A2.2.Tag1 feeds back the first backscattering information, such as RN16, which is received by the first device UE. It should be noted that the first device may successfully receive the RN16 of Tag1, or may not successfully receive the RN16 of Tag1.
  • the terminal After the first device successfully receives the RN16 of Tag1, the terminal sends the confirmation command ACK, that is, the second command to Tag1.
  • the third device sends the second excitation carrier CW2 after T2 and before T1 from the end time of the time unit where the first command is located.
  • A2.5.Tag1 feeds back the second backscatter information, for example, the electronic product code of Tag1, which is received by the first device. It should be understood that the first device may successfully receive the second backscattering information fed back by Tag1, or may not successfully receive the second backscattering information of Tag1.
  • Tag query results collected by the terminal may include zero or more Tag query results. The details depend on whether the first backscattered information and/or the second backscattered information of the Tag is successfully received.
  • the first device did not successfully receive the first backscattering information of Tag2.
  • the second command sent by the first device to Tag2 may be NAK.
  • Tag2 will not receive the second command after receiving the second command. No feedback will be triggered, but returns to the arbitrate state.
  • the terminal After collecting the query results of the N second devices (including successful reception and unsuccessful reception), the terminal can package the query results and send them to the third device through the Uu air interface, that is, send the second feedback. information.
  • the query result of each second device may include all or part of the information of the Tag query result.
  • the first device only needs to include the electronic product code of the second device in the second feedback information, and information such as RN16 does not need to be included.
  • the first device may not include the query result of the second device in the second feedback information, or record that the query result of the second device is empty ( NULL) to inform the third device that the tag's query result was not successfully received.
  • the third device can successfully obtain the electronic product code of the second device based on the second feedback information of the second device, thereby further performing read and write operations on the second device.
  • the first device after entering the access phase, the first device no longer sends the second command to the second device, but instead leaves all related commands to the third device to send, such as random access commands. Therefore, after receiving the query result of the second device, the terminal needs to send the relevant query result of the second device to the third device for processing.
  • the embodiments of the present application monitor the first backscattering information and/or the second backscattering information of N second devices, and then uniformly summarize the query results of the N second devices.
  • Sending the second feedback information to the third device can reduce the feedback process to the third device, reduce the delay and process complexity of the three-party backscatter communication, and help improve communication efficiency.
  • the execution subject may be an access device for backscatter communication.
  • the access device for backscatter communication that performs the access method for backscatter communication is taken as an example to illustrate the access device for backscatter communication provided by the embodiment of this application.
  • the access device for backscatter communication includes a first execution module 701 and a first transmission module 702 .
  • the first execution module 701 is configured to monitor the first backscatter information sent by the second device, the first backscatter information is sent by the second device based on the first command, the first backscatter information is sent by the second device based on the first command.
  • the command is sent by the third device; the first transmission module 702 is used to send a second command to the second device according to the monitoring situation; wherein the first command is different from the second command.
  • the first device is one of a network side device and a terminal
  • the third device is the other of the network side device and a terminal
  • the second device is a backscatter communication device.
  • the first command or the second command includes at least one of the following:
  • the second command is used to respond to the monitoring situation of the first backscatter information.
  • the first backscatter information includes at least one of the following:
  • the identification information of the second device is the identification information of the second device.
  • the handle information of the second device is the handle information of the second device.
  • the second backscatter information includes at least one of the following:
  • the identification information of the second device is the identification information of the second device.
  • the handle information of the second device is the handle information of the second device.
  • the embodiments of the present application monitor the first backscatter information sent by the second device, and the first backscatter information is sent by the second device based on the first command. , and then sends a second command to the second device according to the monitoring situation, and the third device triggers a query operation on the second device through the first command, and the second device performs subsequent query operations to reduce the number of requests to the third device.
  • the feedback process of the device reduces the delay and process complexity of three-party backscatter communication, which is beneficial to improving communication efficiency.
  • the first transmission module 702 is also configured to monitor the first command sent by the third device.
  • the first transmission module 702 is also configured to monitor second backscatter information sent by the second device, where the second backscatter information is triggered by the second command, and the second backscatter information is triggered by the second command.
  • the first backscattered information is different from the second backscattered information.
  • the first transmission module 702 is also configured to send a first excitation carrier, and the first excitation carrier is used by the second device to perform backscattering of the second backscattering information.
  • the second backscattering information is backscattered according to the second excitation carrier, wherein the second excitation carrier is emitted by the third device.
  • the embodiments of the present application first monitor the first command sent by the third device, then monitor the first backscattering information of the second device, and monitor the second device after sending the second command.
  • the second backscatter information can thereby reduce the feedback process to the third device, reduce the delay and process complexity of the three-party backscatter communication, and help improve communication efficiency.
  • the first transmission module 702 is also configured to send first feedback information to the third device, where the first feedback information is related to the first backscatter information.
  • the first transmission module 702 is also configured to send second feedback information to the third device, where the second feedback information is consistent with the first backscatter information and/or the second backscatter information.
  • the second feedback information is consistent with the first backscatter information and/or the second backscatter information.
  • the embodiments of the present application can reduce the number of requests to the third device by sending the first feedback information and/or the second feedback information to the third device after completing the query operation on the second device.
  • the feedback process of the third device reduces the delay and process complexity of three-party backscatter communication, which is beneficial to improving communication efficiency.
  • the first transmission module 702 is configured to transmit the first backscatter information and/or the second backscatter information to the third device while listening to the first backscatter information and/or the second backscatter information sent by the N second devices.
  • the device sends second feedback information; wherein N is a positive integer, and the second feedback information is related to the first backscattering information and/or the second backscattering information corresponding to the N second devices.
  • the embodiments of the present application monitor the first backscattering information and/or the second backscattering information of N second devices, and then uniformly summarize the query results of the N second devices.
  • Sending the second feedback information to the third device can reduce the feedback process to the third device, reduce the delay and process complexity of the three-party backscatter communication, and help improve communication efficiency.
  • the access device for backscatter communication in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip.
  • the electronic device may be a terminal or other devices other than the terminal.
  • terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.
  • the embodiment of the present application provides a backscatter communication access method.
  • the method is executed by a third device in the backscatter communication system.
  • the method can be performed by a third device installed in the backscatter communication system.
  • the methods include:
  • the third device receives the first feedback information and/or the second feedback information from the first device
  • the first feedback information is related to the first backscattering information of the second device
  • the second feedback information is related to the first backscattering information and/or the second backscattering information of the second device.
  • Information related, the first backscatter information is triggered by a first command
  • the first command is sent by the third device
  • the second backscatter information is triggered by a second command
  • the second command is The second device sends, the first command is different from the second command
  • the first backscatter information is different from the second backscatter information.
  • the first command includes at least one of the following commands:
  • the method further includes:
  • the third device sends a first command to the second device, where the first command is used to trigger the second device to send the first backscatter information.
  • the method further includes:
  • the third device sends a second excitation carrier to the second device, and the second excitation carrier is used to cause the second device to send second backscatter information.
  • the third device sends a second excitation carrier to the second device that satisfies at least one of the following:
  • the third device sends a second excitation carrier to the second device;
  • the third device sends a second excitation carrier to the second device after a second time interval from the end of the time unit in which the first command is sent by the third device;
  • the second time interval is less than or equal to the first time interval.
  • the first backscatter information or the second backscatter information includes at least one of the following:
  • the identification information of the second device is the identification information of the second device.
  • the handle information of the second device is the handle information of the second device.
  • the third device sends the first command to the second device, including:
  • the third device sends the first command to the N second devices
  • the time interval between adjacent first commands is greater than or equal to the third time interval, and N is a positive integer.
  • the second feedback information is related to the first backscatter information and/or the second backscatter information of the N second devices.
  • Step S810 can implement the method embodiments shown in Figures 2 to 5 and obtain the same technical effect, and the repeated parts will not be described again here.
  • the embodiments of the present application transmit the first command to the second device and receive the first feedback information and/or the second feedback information from the first device, thereby converting the query operation process of the second device into
  • the commands in are separately sent by the third device and the second device.
  • the third device triggers a query operation on the second device through the first command, and the second device performs subsequent query operations, and then receives the The query results of the N second devices are unified and sent to the third device, thereby reducing the feedback process to the third device, reducing the delay and process complexity of the three-party backscatter communication, and helping to improve communication efficiency.
  • the execution subject may be an access device for backscatter communication.
  • the access device for backscatter communication that performs the access method for backscatter communication is taken as an example to illustrate the access device for backscatter communication provided by the embodiment of this application.
  • the access device for backscatter communication includes: a second transmission module 901 and a second execution module 902.
  • the second transmission module 901 receives the first feedback information and/or the second feedback information from the first device; the second execution module 902 is used to obtain the first feedback information and/or the second feedback information according to the first feedback information and/or the second feedback information.
  • Query results of two devices wherein the first feedback information is related to the first backscatter information of the second device, the second feedback information is related to the first backscatter information of the second device and/ or related to second backscatter information, the first backscatter information is triggered by a first command, the first command is sent by the third device, and the second backscatter information is triggered by a second command, The second command is sent by the second device, the first command is different from the second command, and the first backscatter information is different from the second backscatter information.
  • the first command includes at least one of the following commands:
  • the second transmission module 901 is also configured to send a first command to the second device, where the first command is used to trigger the second device to send the first backscatter information.
  • the method further includes:
  • the third device sends a second excitation carrier to the second device, where the second excitation carrier is used to cause the second device to perform backscattering of the first backscattering information.
  • sending the second excitation carrier to the second device satisfies at least one of the following:
  • the second time interval is less than or equal to the first time interval.
  • the first backscatter information or the second backscatter information includes at least one of the following:
  • the identification information of the second device is the identification information of the second device.
  • the handle information of the second device is the handle information of the second device.
  • the second transmission module 901 is used to send the first command to N second devices;
  • the time interval between adjacent first commands is greater than or equal to the third time interval, and N is a positive integer.
  • the second feedback information is related to the first backscatter information and/or the second backscatter information of the N second devices.
  • the embodiments of the present application transmit the first command to the second device and receive the first feedback information and/or the second feedback information from the first device, thereby converting the query operation process of the second device into
  • the commands in are separately sent by the backscatter communication access device and the second device.
  • the backscatter communication access device triggers a query operation on the second device through the first command, and the second device Perform subsequent query operations, and then uniformly aggregate the received query results of the N second devices and send them to the backscattering communication access device, thereby reducing the feedback process to the third device and reducing the three-party reverse
  • the delay and process complexity of scattering communication are beneficial to improving communication efficiency.
  • the access device for backscatter communication in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip.
  • the electronic device may be a terminal or other devices other than the terminal.
  • terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.
  • the backscatter communication access device provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figure 9 and achieve the same technical effect. To avoid duplication, the details will not be described here.
  • this embodiment of the present application also provides a communication device 1000, which includes a processor 1001 and a memory 1002.
  • the memory 1002 stores programs or instructions that can be run on the processor 1001, such as , when the communication device 1000 is a terminal, when the program or instruction is executed by the processor 1001, each step of the above embodiment of the access method for backscatter communication is implemented, and the same technical effect can be achieved.
  • the communication device 1000 is a network-side device, when the program or instruction is executed by the processor 1001, each step of the above-mentioned backscatter communication access method embodiment is implemented, and the same technical effect can be achieved. To avoid duplication, the steps are not included here. Again.
  • An embodiment of the present application also provides a terminal, including a processor and a communication interface.
  • the processor is configured to monitor the first backscatter information sent by the second device, and the communication interface is configured to send a second command to the second device according to the monitoring situation.
  • This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment.
  • Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect.
  • FIG. 12 shows the hardware structure of a terminal that implements an embodiment of the present application. intention.
  • the terminal 1100 includes but is not limited to: a radio frequency unit 1101, a network module 1102, an audio output unit 1103, an input unit 1104, a sensor 1105, a display unit 1106, a user input unit 1107, an interface unit 1108, a memory 1109, a processor 1110, etc. At least some parts.
  • the terminal 1100 may also include a power supply (such as a battery) that supplies power to various components.
  • the power supply may be logically connected to the processor 1110 through a power management system, thereby managing charging, discharging, and power consumption through the power management system. Management and other functions.
  • the terminal structure shown in Figure 12 does not constitute a limitation on the terminal.
  • the terminal may include more or fewer components than shown in the figure, or some components may be combined or arranged differently, which will not be described again here.
  • the input unit 1104 may include a graphics processing unit (GPU) 11041 and a microphone 11042.
  • the GPU 11041 is used for recording data by an image capture device (such as a camera) in the video capture mode or the image capture mode.
  • the image data obtained from still pictures or videos is processed.
  • the display unit 1106 may include a display panel 11061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 1107 includes at least one of a touch panel 11071 and other input devices 11072 .
  • Touch panel 11071 also called touch screen.
  • the touch panel 11071 may include two parts: a touch detection device and a touch controller.
  • Other input devices 11072 may include but are not limited to physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.
  • the radio frequency unit 1101 after receiving downlink data from the network side device, the radio frequency unit 1101 can transmit it to the processor 1110 for processing; in addition, the radio frequency unit 1101 can send uplink data to the network side device.
  • the radio frequency unit 1101 includes, but is not limited to, an antenna, amplifier, transceiver, coupler, low noise amplifier, duplexer, etc.
  • Memory 1109 may be used to store software programs or instructions as well as various data.
  • the memory 1109 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, Image playback function, etc.) etc.
  • memory 1109 may include volatile memory or nonvolatile memory, or memory 1109 may include both volatile and nonvolatile memory.
  • non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory.
  • Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synchlink DRAM, SLDRAM) and Direct Rambus RAM (DRRAM).
  • RAM Random Access Memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • synchronous dynamic random access memory Synchronous DRAM, SDRAM
  • Double data rate synchronous dynamic random access memory Double Data Rate SDRAM, DDRSDRAM
  • Enhanced SDRAM, ESDRAM synchronous dynamic random access memory
  • Synchlink DRAM, SLDRAM Direct Rambus RAM
  • Memory 1109 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.
  • the processor 1110 may include one or more processing units; optionally, the processor 1110 integrates an application A processor and a modem processor are used.
  • the application processor mainly processes operations involving the operating system, user interface and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above modem processor may not be integrated into the processor 1110.
  • the processor 1110 is used to monitor the first backscatter information sent by the second device, the first backscatter information is sent by the second device based on the first command, the first command Sent by a third device;
  • the radio frequency unit 1101 is configured to send a second command to the second device according to the monitoring situation; wherein the first command is different from the second command.
  • the first device is one of a network side device and a terminal
  • the third device is the other of the network side device and a terminal
  • the second device is a backscatter communication device.
  • the first command or the second command includes at least one of the following:
  • the second command is used to respond to the monitoring situation of the first backscatter information.
  • the first backscatter information includes at least one of the following:
  • the identification information of the second device is the identification information of the second device.
  • the handle information of the second device is the handle information of the second device.
  • the second backscatter information includes at least one of the following:
  • the identification information of the second device is the identification information of the second device.
  • the handle information of the second device is the handle information of the second device.
  • the embodiments of the present application reduce the feedback process to the third device, reduce the delay and process complexity of three-party backscatter communication, and are conducive to improving communication efficiency.
  • the radio frequency unit 1101 is also configured to monitor the first command sent by the third device.
  • the radio frequency unit 1101 is also configured to monitor second backscatter information sent by the second device, the second backscatter information is triggered by the second command, and the first backscatter information is triggered by the second command.
  • the forward scattering information is different from the second backscattering information.
  • the radio frequency unit 1101 is also configured to send a first excitation carrier, and the first excitation carrier is used by the second device to perform backscattering of the second backscatter information.
  • the second backscattering information is backscattered according to the second excitation carrier, wherein the second excitation carrier is emitted by the third device.
  • the embodiments of the present application can reduce the feedback process to the third device, reduce the delay and process complexity of three-party backscatter communication, and help improve communication efficiency.
  • the radio frequency unit 1101 is also configured to send a signal to the third device.
  • First feedback information is sent, and the first feedback information is related to the first backscattering information.
  • the radio frequency unit 1101 is also configured to send second feedback information to the third device, where the second feedback information is related to the first backscatter information and/or the second backscatter information.
  • the embodiments of the present application can reduce the feedback process to the third device, reduce the delay and process complexity of three-party backscatter communication, and help improve communication efficiency.
  • the radio frequency unit 1101 is configured to send the first backscatter information and/or the second backscatter information to the third device while monitoring the first backscatter information and/or the second backscatter information sent by N second devices.
  • Second feedback information wherein, the N is a positive integer, and the second feedback information is related to the first backscattering information and/or the second backscattering information corresponding to the N second devices.
  • the embodiments of the present application can reduce the feedback process to the third device, reduce the delay and process complexity of three-party backscatter communication, and help improve communication efficiency.
  • An embodiment of the present application also provides a network side device, including a processor and a communication interface.
  • the processor is configured to obtain the query result of the second device according to the first feedback information and/or the second feedback information.
  • the communication interface is configured to obtain the query result from the second device.
  • a device receives first feedback information and/or second feedback information.
  • This network-side device embodiment corresponds to the above-mentioned network-side device method embodiment. Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this network-side device embodiment, and can achieve the same technical effect.
  • the embodiment of the present application also provides a network side device.
  • the network side device 1200 includes: an antenna 121 , a radio frequency device 122 , a baseband device 123 , a processor 124 and a memory 125 .
  • the antenna 121 is connected to the radio frequency device 122 .
  • the radio frequency device 122 receives information through the antenna 121 and sends the received information to the baseband device 123 for processing.
  • the baseband device 123 processes the information to be sent and sends it to the radio frequency device 122.
  • the radio frequency device 122 processes the received information and then sends it out through the antenna 121.
  • the method performed by the network side device in the above embodiment can be implemented in the baseband device 123, which includes a baseband processor.
  • the baseband device 123 may include, for example, at least one baseband board on which multiple chips are disposed, as shown in FIG. Program to perform the network device operations shown in the above method embodiments.
  • the network side device may also include a network interface 126, which is, for example, a common public radio interface (CPRI).
  • a network interface 126 which is, for example, a common public radio interface (CPRI).
  • CPRI common public radio interface
  • the network side device 1200 in the embodiment of the present application also includes: instructions or programs stored in the memory 125 and executable on the processor 124.
  • the processor 124 calls the instructions or programs in the memory 125 to execute each of the steps shown in Figure 10
  • the method of module execution and achieving the same technical effect will not be described in detail here to avoid duplication.
  • Embodiments of the present application also provide a readable storage medium on which a program or instructions are stored.
  • a program or instructions are stored.
  • each process of the above embodiment of the access method for backscatter communication is implemented. , and can achieve the same technical effect, so to avoid repetition, they will not be described again here.
  • the processor is the processor in the terminal described in the above embodiment.
  • the readable storage media includes computer-readable storage media, such as computer read-only memory ROM, random access memory Storage RAM, magnetic disk or optical disk, etc.
  • An embodiment of the present application further provides a chip.
  • the chip includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the above-mentioned backscatter communication interface.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • Embodiments of the present application further provide a computer program/program product.
  • the computer program/program product is stored in a storage medium.
  • the computer program/program product is executed by at least one processor to implement the above-mentioned backscatter communication.
  • Each process of the access method embodiment can achieve the same technical effect. To avoid duplication, it will not be described again here.
  • An embodiment of the present application also provides an access system for backscatter communication, including: a first device, a second device, and a third device.
  • the first device can be used to perform the access of backscatter communication as described above.
  • the third device may be configured to perform the steps of the access method for backscatter communication as described above.
  • the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation.
  • the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology.
  • the computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

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Abstract

本申请公开了一种反向散射通信的接入方法、装置、终端及网络侧设备，属于移动通信领域，本申请实施例的反向散射通信的接入方法包括：第一设备监听由第二设备发送的第一反向散射信息，所述第一反向散射信息是由所述第二设备基于第一命令所发送的，所述第一命令由第三设备发送；所述第一设备根据监听情况向第二设备发送第二命令；其中，所述第一命令与第二命令不同。

Description

反向散射通信的接入方法、装置、终端及网络侧设备
交叉引用
本申请要求在2022年06月06日提交中国专利局、申请号为202210631119.3、发明名称为“反向散射通信的接入方法、装置、终端及网络侧设备”的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请属于无线通信技术领域，具体涉及一种反向散射通信的接入方法、装置、终端及网络侧设备。
背景技术
在反向散射(BackScatter Communication，BSC)通信系统中反向散射通信设备可利用其它设备或者环境中的射频信号进行信号调制来传输信息。所述反向散射通信设备可以为物联网(Internet of Things，IoT)设备例如标签设备(Tag)，系统中的读写器(Reader)可通过与标签设备进行直接交互，并可以通过激励载波触发所述标签设备的反向散射。
在反向散射通信系统中，还可以包括由第三方设备参与的通信场景，所述第三方设备可以作为读写器与标签设备之间的中继设备，虽然所述第三方设备在一些场景中可以辅助读写器与标签设备之间的传输，但同时也增加了通信流程的复杂程度。
发明内容
本申请实施例提供一种反向散射通信的接入方法、装置、终端及网络侧设备，能够解决在第三方设备参与的反向散射通信场景中，通信流程的复杂程度和通信时延增加以及通信效率降低的问题。
第一方面，提供了一种反向散射通信的接入方法，应用于第一设备，该方法包括：
第一设备监听由第二设备发送的第一反向散射信息，所述第一反向散射信息是由所述第二设备基于第一命令所发送的，所述第一命令由第三设备发送；
所述第一设备根据监听情况向第二设备发送第二命令；
其中，所述第一命令与所述第二命令不同。
第二方面，提供了一种反向散射通信的接入装置，包括：
第一执行模块，用于监听由第二设备发送的第一反向散射信息，所述第一反向散射信息是由所述第二设备基于第一命令所发送的，所述第一命令由第三设备发送；
第一传输模块，用于根据监听情况向第二设备发送第二命令；
其中，所述第一命令与第二命令不同。
第三方面，提供了一种反向散射通信的接入方法，应用于第三设备，该方法包括：
第三设备从第一设备接收第一反馈信息和/或第二反馈信息；
其中，所述第一反馈信息与所述第二设备的第一反向散射信息相关，所述第二反馈信息与所述第二设备的第一反向散射信息和/或第二反向散射信息相关，所述第一反向散射信息由第一命令触发，所述第一命令由所述第三设备发送，所述第二反向散射信息由第二命令触发，所述第二命令由所述第二设备发送，所述第一命令与第二命令不同，所述第一反向散射信息与所述第二反向散射信息不同。
第四方面，提供了一种反向散射通信的接入装置，包括：
第二传输模块，从第一设备接收第一反馈信息和/或第二反馈信息；
第二执行模块，根据所述第一反馈信息和/或第二反馈信息获取第二设备的质询结果；
其中，所述第一反馈信息与所述第二设备的第一反向散射信息相关，所述第二反馈信息与所述第二设备的第一反向散射信息和/或第二反向散射信息相关，所述第一反向散射信息由第一命令触发，所述第一命令由所述第三设备发送，所述第二反向散射信息由第二命令触发，所述第二命令由所述第二设备发送，所述第一命令与第二命令不同，所述第一反向散射信息与所述第二反向散射信息不同。
第五方面，提供了一种终端，该终端包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第一方面所述的方法的步骤。
第六方面，提供了一种终端，包括处理器及通信接口，其中，所述处理器用于第一设备监听由第二设备发送的第一反向散射信息，所述第一反向散射信息是由所述第二设备基于第一命令所发送的，所述通信接口用于根据监听情况向第二设备发送第二命令。
第七方面，提供了一种网络侧设备，该网络侧设备包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第三方面所述的方法的步骤。
第八方面，提供了一种网络侧设备，包括处理器及通信接口，其中，所述处理器用于根据所述第一反馈信息和/或第二反馈信息获取第二设备的质询结果，所述通信接口用于从第一设备接收第一反馈信息和/或第二反馈信息。
第九方面，提供了一种反向散射通信的接入系统，包括：第一设备、第二设备及第三设备，所述第一设备可用于执行如第一方面所述的反向散射通信的接入方法的步骤，所述第三设备可用于执行如第三方面所述的反向散射通信的接入方法的步骤。
第十方面，提供了一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如第一方面所述的方法的步骤， 或者实现如第三方面所述的方法的步骤。
第十一方面，提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如第一方面所述的方法，或者实现如第三方面所述的方法。
第十二方面，提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现如第一方面所述的反向散射通信的接入方法，或者实现如第三方面所述的反向散射通信的接入方法的步骤。
在本申请实施例中，通过第一设备根据第一反向散射信息的监听情况向第二设备发送第二命令，其中，所述第一反向散射信息由第一命令所触发且所述第一命令由第三设备发送，由此，通过第一设备辅助第三设备进行部分命令的发送，从而能够减少向所述第三设备的反馈过程，减少三方反向散射通信的时延与流程的复杂度，有利于提高通信效率。
附图说明
图1是本申请实施例可应用的一种无线通信系统的结构示意图；
图2是本申请实施例提供的一种反向散射通信的接入方法的流程示意图；
图3是本申请实施例提供的另一种反向散射通信的接入方法的流程示意图；
图4是本申请实施例提供的另一种反向散射通信的接入方法的流程示意图；
图5是本申请实施例提供的另一种反向散射通信的接入方法的流程示意图；
图6是本申请实施例提供的另一种反向散射通信的接入方法的流程示意图；
图7是本申请实施例提供的一种反向散射通信的接入方法的信令流程示意图；
图8是本申请实施例提供的一种反向散射通信的接入装置的结构示意图；
图9是本申请实施例提供的另一种反向散射通信的接入方法的流程示意图；
图10是本申请实施例提供的另一种反向散射通信的接入装置的结构示意图；
图11是本申请实施例提供的一种通信设备结构示意图；
图12为实现本申请实施例的一种终端的结构示意图；
图13为实现本申请实施例的一种网络侧设备的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实 施例。基于本申请中的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”所区别的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”一般表示前后关联对象是一种“或”的关系。
值得指出的是，本申请实施例所描述的技术不限于长期演进型(Long Term Evolution，LTE)/LTE的演进(LTE-Advanced，LTE-A)系统，还可用于其他无线通信系统，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier Frequency Division Multiple Access，SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用，所描述的技术既可用于以上提及的系统和无线电技术，也可用于其他系统和无线电技术。以下描述出于示例目的描述了新空口(New Radio，NR)系统，并且在以下大部分描述中使用NR术语，但是这些技术也可应用于NR系统应用以外的应用，如第6代(6th Generation，6G)通信系统。
图1示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括第一设备11、第三设备12和第二设备13。其中，所述第一设备可以为终端11，终端11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant，PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer，UMPC)、移动上网装置(Mobile Internet Device，MID)、增强现实(augmented reality，AR)/虚拟现实(virtual reality，VR)设备、机器人、可穿戴式设备(Wearable Device)、车载设备(Vehicle User Equipment，VUE)、行人终端(Pedestrian User Equipment，PUE)、智能家居(具有无线通信功能的家居设备，如冰箱、电视、洗衣机或者家具等)、游戏机、个人计算机(personal computer，PC)、柜员机或者自助机等终端侧设备，可穿戴式设备包括：智能手表、智能手环、智能耳机、智能眼镜、智能首饰(智能手镯、智能手链、智能戒指、智能项链、智能脚镯、智能脚链等)、智能腕带、智能服装等。需要说明的是，在本申请实施例并不限定终端11的具体类型。所述第三设备可以为网络侧设备、读写器等，所述网络侧设备12可以包括接入网设备或核心网设备，其中，接入网设备也可以称为无线接入网设备、无线接入网(Radio Access Network,RAN)、无线接入网功能或无线接入网单元。接入网设备可以包括基站、无线局域网(Wireless Local Area Network，WLAN)接入点或 无线保真(Wireless Fidelity，WiFi)节点等，基站可被称为节点B、演进节点B(eNB)、接入点、基收发机站(Base Transceiver Station，BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set，BSS)、扩展服务集(Extended Service Set，ESS)、家用B节点、家用演进型B节点、发送接收点(Transmission Reception Point，TRP)或所述领域中其他某个合适的术语，只要达到相同的技术效果，所述基站不限于特定技术词汇，需要说明的是，在本申请实施例中仅以NR系统中的基站为例进行介绍，并不限定基站的具体类型。核心网设备可以包含但不限于如下至少一项：核心网节点、核心网功能、移动管理实体(Mobility Management Entity，MME)、接入移动管理功能(Access and Mobility Management Function，AMF)、会话管理功能(Session Management Function，SMF)、用户平面功能(User Plane Function，UPF)、策略控制功能(Policy Control Function，PCF)、策略与计费规则功能单元(Policy and Charging Rules Function，PCRF)、边缘应用服务发现功能(Edge Application Server Discovery Function，EASDF)、统一数据管理(Unified Data Management，UDM)，统一数据仓储(Unified Data Repository，UDR)、归属用户服务器(Home Subscriber Server，HSS)、集中式网络配置(Centralized network configuration，CNC)、网络存储功能(Network Repository Function，NRF)，网络开放功能(Network Exposure Function，NEF)、本地NEF(Local NEF，或L-NEF)、绑定支持功能(Binding Support Function，BSF)、应用功能(Application Function，AF)等。需要说明的是，在本申请实施例中仅以NR系统中的核心网设备为例进行介绍，并不限定核心网设备的具体类型。所述第三设备13可以为反向散射通信设备，例如无源物联网设备或标签设备。
下面结合附图，通过一些实施例及其应用场景对本申请实施例提供的反向散射通信的接入方法、装置、终端及网络侧设备进行详细地说明。
如图2所示，本申请实施例提供了一种反向散射通信的接入方法，该方法的执行主体为反向散射通信系统中的第一设备，换言之，该方法可以由安装在第一设备的软件或硬件来执行。
反向散射(Backscatter)是指反向散射通信设备利用其它设备或者环境中的射频信号进行信号调制来传输信息。反向散射通信设备，可以是：
无源标签(Tag)设备，属于无源物联网(Internet of Things，IoT)设备(Passive-IoT)；
半无源(semi-passive)的Tag，这类Tag的下行接收或者上行反射具备一定的放大能力；
具备主动发送能力的Tag(active Tag)，这类Tag可以不依赖对入射信号的反向散射向阅读器(reader)发送信息。
为了简便起见，在下面的实施例中，所述反向散射通信设备以Tag为例进行举例说明。
传统的射频识别技术(Radio Frequency Identification，RFID)的设计在盘点模式下，要求读取器发送查询指令(Query)后Tag响应回应(Reply)， 即产生一个16-bit的随机序列(Random Sequence 16，RN16)给读取器。然后读取器将该序列通过确认(Acknowledgement，ACK)指令发给Tag后，Tag将相关的数据发送给阅读器。
在本申请的至少一个可选实施例中，反向散射通信可以理解为反向散射信道或信号的传输，其中反向散射信道或信号传输包括：(1)激励载波，(2)控制命令，以及(3)反向散射信息。具体的：
(1)激励载波；在一种实施例中，该激励载波可以是由网络侧设备发送给标签的，还可以是由终端发送给标签的。
(2)控制命令(command)，例如：选取命令、查询命令、重复查询命令、答复命令、读取命令、写入命令、随机请求命令等；一种实施例中，该控制命令可以是由网络侧设备发送给标签的，还可以是由终端发送给标签的。
可选地，所述控制命令可以包括以下至少一项：选择类型命令，盘点类型命令，接入命令；其中，所述选择类型命令包括以下至少一项：选择命令(一个具体的选择命令)，盘点命令，排序命令；所述盘点类型命令包括以下至少一项：查询命令(一个具体的查询命令)，调节查询命令，重复查询命令；所述接入命令包括以下至少一项：随机请求命令，读取命令，写入命令，销毁命令，锁定命令，访问命令，安全相关接入命令，文件管理相关接入命令。
选择(Select)类型命令是必备的，由于标签有多种属性，基于用户设定的标准和策略，使用选择类型命令，改变某些属性和标志就是人为选择或圈定了一个特定的标签群，可以只对它们进行盘点识别或存取操作，这样有利于减少冲突和重复识别，加快识别速度。
盘点类型命令用于开始一次盘点。例如，查询命令用于启动一轮盘点，并决定哪些标记参与该轮盘点；调节查询命令用于将标签原来接收时刻(Slot)的数目进行调整；重复查询命令用于减少标签Slot的数字。
接入(Access)命令中，随机请求(Req_RN)命令要求标签产生一个随机数；读取命令用于从标签的存储中的某个位置读取资料；写入命令用于写入资料到标签的存储中；销毁命令可以防止隐私的泄漏，标签无法再使用；锁定命令用于标签不能再进行写入的动作，防止资料被任意的串改；访问命令用于当标签拥有密码时候让标签从开启(Open)的状态转成保护(Secure)状态；安全相关接入命令用于保障标签安全；文件管理相关接入命令可以用于对标签内文件进行管理。
(3)反向散射信息，例如：Tag标识信息(如查询过程中的临时代表Tag身份的16-bit随机数)、电子产品代码信息、Tag状态信息等。一种实施例中，该反向散射信道或信号可以是标签通过反向散射发送给终端的，还可以是标签通过反向散射发送给网络侧设备的。
本申请实施例中质询器或读写器(reader)和标签(Tag)之间的信息传输包括：
a.选择(Select)操作：读写器选择标签群进行后续清点或以密码方式挑战标签群以进行后续身份验证的过程。选择操作包括选择命令(select)和 挑战命令(Challenge)。
b.盘点(Inventory)操作：读写器识别标签的过程。读写器通过在四个会话之一中传输查询命令来开始盘点。一个或多个标签可能会回复。读写器检测到单个标签回复并从标签请求产品码(Product Code，PC)、可选扩展协议控制(Extended Protocol Control，XPC)字、电子产品码(ElectronicProductCode，EPC)和循环冗余检验(Cyclical Redundancy Check-16，CRC-16)。一轮盘点一次只在一个会话中运行。盘点包含多个命令，其中非常重要的命令为查询相关的命令，例如查询命令、重复查询命令等。
c.访问(Access)操作：读写器与单个标签进行交易(读取、写入、验证或以其他方式参与)的过程。读写器在访问前单独识别并唯一识别标签。访问包括多个命令。
具体的，本申请实施例中提到的第一命令或第二命令具体可以包括：读写器(reader)和标签(Tag)之间的命令(command)，如表1所示。
表1



标签(Tag)的各个状态如表2所示。
表2

本申请实施例的反向散射通信的接入方法包括以下步骤。
S110、第一设备监听由第二设备发送的第一反向散射信息，所述第一反向散射信息是由所述第二设备基于第一命令所发送的。
应理解的是，反向散射通信系统可以包括如图1所示的网络侧设备12、终端11和反向散射通信设备13，其中，所述网络侧设备12具体可以为基站NR节点(NR Node B，gNB)等，所述反向散射通信设备可以为标签设备(Tag)。
本申请实施例通过将对反向散射通信设备发送的命令(Command)进行分流，在对反向散射通信设备进行某一操作时，可以由网络侧设备和终端分别向所述反向散射通信设备发送第一命令和第二命令。所述某一操作可以为对反向散射通信设备的质询操作，即所述第一命令和第二命令用于指示所述第二设备执行质询操作，且所述第一命令和第二命令不同。
所述第一设备为网络侧设备和终端中的一者，所述第三设备为所述网络侧设备和终端中的另一者，所述第二设备为反向散射通信设备，所述第三设备可以向所述第二设备发送第一命令，所述第一设备可以向所述第二设备发送第二命令。
在一种实施方式中，所述第一设备为终端，所述第三设备为网络侧设备。
在另一种实施例中，所述第一设备为网络侧设备，所述第三设备为终端。
为了简便起见，在下面的实施例中均以所述第一设备为终端，所述第三设备为网络侧设备为例进行举例说明。
在一种实施方式中，由所述第三设备先向所述第二设备发送第一命令以发起对所述第二设备的盘点或质询过程。
在一种实施方式中，所述第一命令包括以下至少一项：
选择命令，例如可以包括select，challenge，分类(sort)；
盘点命令，例如可以包括Query，QueryAdjust，QueryRep；
接入命令，例如可以包括Req_RN，Read，Write，Lock，Kill，Access，BlockWrite，BlockErase，BlockPermalock，Authenticate，ReadBuffer，SecureComm，AuthComm，KeyUpdate，Untraceable，FileOpen，FileList，FilePrivilege，FileSetup和TagPrivilege。
需要说明的是，所述第一命令的具体命令可以参见上表1所示，此处不再赘述。
所述第二设备可以根据所述第一命令通过反向散射方式发送第一反向散射信息。
在一种实施方式中，所述第一反向散射信息包括以下至少一项：
所述第二设备的标识信息，例如代表标签身份的16比特随机数(RN16)；
所述第二设备的电子产品代码信息，所述电子产品代码信息例如PC和EPC等；
所述第二设备的句柄信息(handle)。
所述第一设备对所述第二设备发送的第一反向散射信息进行监听。所述第一设备对所述第二设备的第一反向散射信息的监听时机可以为所述第一设备的一种默认状态，或者在确定所述反向散射系统处于盘点阶段时开始监听，或者在确定所述第二设备执行质询操作时开始监听。
S120、所述第一设备根据监听情况向第二设备发送第二命令。其中，所述第一命令与所述第二命令不同。
所述第一设备对所述第二设备的第一反向散射信息的监听情况可包括是否成功接收到所述第二设备的第一反向散射信息，还可以包括从所述第一反向散射信息中获取到的内容是否正确解析，还可以包括当前读写器不想针对所述第一反向散射信息进行回复等情况，在此不作限定。
所述第一设备根据监听情况向所述第二设备发送第二命令，在一种实施方式中，所述第二命令可以包括以下至少一项：
选择命令；
盘点命令；
接入命令。
在一种实施方式中，所述第二命令还可以用于指示成功接收或未成功接收所述第一反向散射信息。在所述第一设备成功接收到所述第二设备的第一反向散射信息的情况下，所述第一设备向所述第二设备发送的第二命令可以包括用于指示成功接收的确认消息(ACK)。在所述第一设备未成功接收到所述第二设备的第一反向散射信息或当前读写器不想针对所述第一反向散射信息进行回复的情况下，所述第一设备向所述第二设备发送的第二命令可以包括非确认命令(Negative Acknowledgment，NAK)。NAK的用途具体参见表1。
应理解的是，所述第一设备未成功接收到所述第二设备的第一反向散射信息具体可以为未接收到所述第一反向散射信息或者错误接收所述第一反向散射信息，其原因可能是由于多个第二设备发生碰撞，导致同时发送多个第一反向散射信息等，此处不做具体限定。
可选地，所述第一设备可以将第一反向散射信息发送给第三设备。所述第三设备根据所述反馈信息成功获取所述第二设备的反向散射信息，从而实现对第二设备的盘点或接入，以此可以进一步对所述第二设备进行后续的读 写操作。
由上述实施例的技术方案可知，本申请实施例通过监听由第二设备发送的第一反向散射信息，所述第一反向散射信息是由所述第二设备基于第一命令所发送的，再根据监听情况向第二设备发送第二命令，由第三设备通过第一命令触发对所述第二设备的质询操作，并由第二设备执行后续的质询操作，通过第一设备辅助第三设备发送部分命令，减少向所述第三设备的反馈过程，减少三方反向散射通信的时延与流程的复杂度，有利于提高通信效率。
基于上述实施例，可选地，如图3所示，在步骤S120之后，所述方法还包括：
S130、所述第一设备监听由所述第二设备发送的第二反向散射信息，所述第二反向散射信息由所述第二命令所触发，所述第一反向散射信息与第二反向散射信息不同。
在所述第一设备向所述第二设备发送第二命令之后，在一种实施方式中，若所述第二命令为指示未成功接收所述第一反向散射信息，则所述第二设备回复到Arbitrate状态，以等待再次接收到所述第三设备发送的第一命令。
在另一种实施方式中，若所述第二命令指示成功接收所述第一反向散射信息，则所述第二设备可以根据接收到的第二命令通过反向散射发送第二反向散射信息，在一种实施方式中，所述第二反向散射信息包括以下至少一项：
所述第二设备的标识信息；
所述第二设备的电子产品代码信息；
所述第二设备的句柄信息。
基于不同的第一命令与第二命令，所述第二设备发送的第一反向散射信息和第二反向散射信息的内容也不同，在一种实施方式中，所述第一反向散射信息可以包括所述第二设备的标识信息，所述第二反向散射信息可以包括所述第二设备的电子产品代码信息，为了简便起见，在下面的实施例中均以所述第一反向散信息包括所述第二设备对应的RN16，所述第二反向散射信息包括所述第二设备对应的PC或EPC为例进行举例说明。
应理解的是，所述第二设备采用反向散射的方式发送第一反向散射信息和第二反向散射信息，为此，需要向第二设备发送对应的激励载波，所述激励载波根据具体的设置可以由第一设备或第三设备发送。
在一种实施方式中，所述第一设备和第三设备均可以发送相应地激励载波，此时，所述第一设备和第三设备可以在向第二设备发送完相应的命令之后，再向第二设备发送对应的激励载波。
所述第三设备在向第二设备发送第一命令后发送第三激励载波(Carrier Wave 3，CW3)，所述第三激励载波CW3用于所述第二设备进行所述第一反向散射信息反向散射。为了保证与第一命令不发生冲突，则所述第三设备发送所述第一命令和第三激励载波CW3需要满足不发生重叠。
所述第一设备在步骤S120之后，发送用于反向散射第二反向散射信息的第一激励载波CW1，所述第一激励载波CW1用于所述第二设备进行所述第 二反向散射信息的反向散射。为了保证与第二命令不发生冲突，所述第二命令与所述第一激励载波之间时域上不重叠。
在另一种实施方式，仅可以由第一设备或第三设备其中之一发送激励载波，以仅可以由网络侧设备，即第三设备发送激励载波为例进行举例说明。
所述第三设备在向第二设备发送第一命令后发送第三激励载波CW3，所述第三激励载波CW3用于所述第二设备进行所述第一反向散射信息反向散射。
所述第二设备的第二反向散射信息可以根据第二激励载波CW2进行反向散射，其中第二激励载波由所述第三设备发出，即所述第三设备在步骤S120之后，发送第二激励载波CW2。
所述第三设备向所述第二设备发送第二激励载波需要满足以下至少一项：
在所述第三设备发送完所述第一命令所在时间单元的结束时刻起的第一时间间隔内T1，所述第三设备向所述第二设备发送第二激励载波CW2，所述时间单元可以为毫秒或时隙等；
在所述第三设备发送完所述第一命令所在时间单元的结束时刻起的第二时间间隔T2之后所述第三设备向所述第二设备发送第二激励载波CW2；
其中，所述第二时间间隔小于或等于所述第一时间间隔，即所述第三设备可以在所述第一命令所在时间单元的结束时刻起的T2之后且T1之前发送所述第二激励载波CW2。
应理解的是，由所述第三设备发送的第二激励载波CW2和第三激励载波CW3可以采用相同的激励载波，也可以根据第二设备发送第一反向散射信息和第二反向散射信息的需求设置为不同强度或时间长度的激励载波，此处不作具体地限定。
同样地，所述第二激励载波CW2、第三激励载波CW3与由第一设备发送的第一激励载波CW1也可以是相同或不同的激励载波。
由上述实施例的技术方案可知，本申请实施例通过先监听由第三设备发送的第一命令，再监听第二设备的第一反向散射信息，并在发送第二命令后监听第二设备的第二反向散射信息，从而可以减少向所述第三设备的反馈过程，减少三方反向散射通信的时延与流程的复杂度，有利于提高通信效率。
基于上述实施例，可选地，如图4所示，在步骤S110之前，所述方法还包括：
S100、所述第一设备监听由第三设备发送的所述第一命令。
所述第一设备可以监听到所述第三设备发送的所述第一命令，从而可以预判第一命令所触发的第一反向散射信息内容，便于确定第一反向散射信息的正确性等。
基于上述实施例，可选地，所述第一设备向所述第三设备上报的反馈信息可以根据所述第二设备的第一反向散射信息和/或第二反向散射信息确定。
在一种实施方式中，如图5所示，在步骤S130之后，所述方法还包括：
S140、所述第一设备向所述第三设备发送第二反馈信息，所述第二反馈 信息与所述第一反向散射信息和/或第二反向散射信息相关。
若所述第一设备成功接收所述第二反向散射信息，则所述第二反馈信息可以包括所述第二反向散射信息中内容，例如所述第二设备的电子产品代码信息；
若所述第一设备未成功接收所述第二反向散射信息，则所述第二反馈信息可以包括所述第二设备未成功接收所述第二反向散射信息的指示；
在另一种实施方式中，在步骤S110之后，所述方法还包括：
所述第一设备向所述第三设备发送第一反馈信息，所述第一反馈信息与所述第一反向散射信息相关。
所述第一设备可以直接根据所述第二设备的第一反向散射信息向所述第三设备发送第一反馈信息，并且在发送完成所述第一反馈信息后，根据实际的需要决定是否执行后续步骤。
由上述实施例的技术方案可知，本申请实施例通过在完成对第二设备的质询操作后，向所述第三设备发送第一反馈信息和/或第二反馈信息，从而可以减少向所述第三设备的反馈过程，减少三方反向散射通信的时延与流程的复杂度，有利于提高通信效率。
基于上述实施例，可选地，如图6所示，在一种实施方式中，所述第三设备可以依次向N个第二设备发送第一命令，用于依次触发对所述第二设备的质询操作，并且由所述第一设备执行对所述N个第二设备的后续质询操作，并在获取所述N个第二设备的质询结果再后统一上报给所述第三设备。
在步骤S120中若所述第一设备向所述第二设备发送的第二命令指示所述第二设备成功接收所述第二设备的第一反向散射信息，则在步骤S120之后，所述第一设备需要执行步骤S130，监听由所述第二设备发送的第二反向散射信息。
在步骤S120中若所述第一设备向所述第二设备发送的第二命令指示所述第二设备未成功接收所述第二设备的第一反向散射信息，则在一种实施方式中，如图6所示，在步骤S120之后，所述第一设备可以执行步骤S100，监听由第三设备发送的第一命令。在另一种实施方式中实施方式中，在步骤S120之后，所述第一设备也可以继续执行步骤S130，直到监听由第二反向散射信息的时间间隔经过后，再执行步骤S100。
所述步骤S140包括：
S141、在所述第一设备监听由N个第二设备发送的第一反向散射信息和/或第二反向散射信息的情况下，所述第一设备向第三设备发送第二反馈信息；其中，所述N为正整数，所述第二反馈信息与所述N个第二设备所对应的第一反向散射信息和/或第二反向散射信息相关。
应理解的是，所述N个第二设备可以为所述反向散射系统中的全部或部分第二设备，也可以为与所述第一设备对应的全部或部分第二设备，为了简便起见，在下面的实施例中以所述第一设备对应所述N个第二设备为例进行举例说明。
应理解的是，所述第三设备向所述N个第二设备发送相邻的第一命令的时间间隔大于或等于第三时间间隔T3。
所述第一设备可以在所述第三设备发送完所述N个第二设备中的第一个第一命令所在时间单元的结束时刻起的第四时间间隔T4内发送所述第二反馈信息。其中，所述第四时间间隔与所述第三时间间隔相关，例如，所述第四时间间隔大于或等于N倍的第三时间间隔。
相应地，所述第三设备也可以在所述第四时间间隔内监听所述第二反馈信息。
所述第三设备可以根据接收到的第一反馈信息和/或第二反馈信息成功获取所述N个第二设备的质询结果，从而实现对所述N个第二设备的接入，以此可以进一步对所述N个第二设备进行后续的读写操作。
如图7所示，本申请实施例给出了反向散射通信的接入方法的一种具体实施方式，所述方法分为三个阶段：选择阶段A1、盘点阶段A2和接入阶段A3。
A1.第三设备向包括N个第二设备的设备群组发送选择命令，使所述设备群组进入A2阶段。
A2.1.由第三设备gNB首先向第二设备Tag1发起质询操作，即向Tag1发送第一命令，并且在所述第一命令发送结束后，发送激励载波CW1给Tag1，以供Tag1反馈第一反向散射信息。
A2.2.Tag1反馈第一反向散射信息例如RN16，由第一设备UE接收。需要说明的是，第一设备可能成功接收到Tag1的RN16，也可能未成功接收到Tag1的RN16。
A2.3.在第一设备成功接收到Tag1的RN16后，终端发送确认命令ACK，即第二命令给Tag1。
A2.4.所述第三设备在所述第一命令所在时间单元的结束时刻起的T2之后且T1之前发送所述第二激励载波CW2。
A2.5.Tag1反馈第二反向散射信息，例如，Tag1的电子产品码，由第一设备接收。应理解的是，第一设备可能成功接收到Tag1反馈的第二反向散射信息，也可能未成功接收Tag1的第二反向散射信息。
针对所述N个第二设备中的每个Tag重复A2.1.-2.5.，第一设备则能够获取到网络发起的N次质询操作中各个Tag的质询结果。应理解的是，终端收集到的Tag的质询结果中，可能包含0个或多个Tag的质询结果。具体要取决于是否成功接收到了Tag的第一反向散射信息和/或第二反向散射信息。
如图7所示，所述第一设备未成功接收到Tag2的第一反向散射信息，此时，第一设备向Tag2发送的第二命令可以为NAK，Tag2接收到该第二命令后不会被触发任何反馈，而是返回到arbitrate状态。
A2.6.终端在收集到所述N个第二设备的质询结果(包括成功接收和未成功接收)之后，可以通过Uu空接口将该质询结果打包发给第三设备，即发送第二反馈信息。
此外，针对每一个第二设备的质询结果而言，可以包括该Tag质询结果的全部或部分信息。例如，第一设备只需要在第二反馈信息中包含第二设备的电子产品码即可，至于RN16等信息可以不包含在内。另外，若第一设备未成功接收到第二设备的质询结果，则第一设备在第二反馈信息中可以不包含该第二设备的质询结果，或记录该第二设备的质询结果为空(NULL)，以告知第三设备未成功接收该Tag的质询结果。
A3.第三设备根据第二设备的第二反馈信息可以成功获取到第二设备的电子产品代码，以此进一步对第二设备进行读写操作。
一种实施方式中，在进入接入阶段后，第一设备不再发第二命令给第二设备，而是全部交由第三设备发送相关命令，例如随机接入命令等。因此，终端在接收到第二设备的质询结果，需要将相关的第二设备的质询结果发送给第三设备进行处理。
由上述实施例的技术方案可知，本申请实施例通过监听N个第二设备的第一反向散射信息和/或第二反向散射信息后，将N个第二设备的质询结果统一汇总后向第三设备发送第二反馈信息，从而能够减少向所述第三设备的反馈过程，减少三方反向散射通信的时延与流程的复杂度，有利于提高通信效率。
本申请实施例提供的反向散射通信的接入方法，执行主体可以为反向散射通信的接入装置。本申请实施例中以反向散射通信的接入装置执行反向散射通信的接入方法为例，说明本申请实施例提供的反向散射通信的接入装置。
如图8所示，所述反向散射通信的接入装置包括第一执行模块701和第一传输模块702。
所述第一执行模块701用于监听由第二设备发送的第一反向散射信息，所述第一反向散射信息是由所述第二设备基于第一命令所发送的，所述第一命令由第三设备发送；所述第一传输模块702用于根据监听情况向第二设备发送第二命令；其中，所述第一命令与第二命令不同。
可选地，所述第一设备为网络侧设备和终端中的一者，所述第三设备为所述网络侧设备和终端中的另一者，所述第二设备为反向散射通信设备。
可选地，所述第一命令或所述第二命令包括以下至少一项：
选择命令；
盘点命令；
接入命令。
可选地，所述第二命令用于响应所述第一反向散射信息的监听情况。
可选地，所述第一反向散射信息包括以下至少一项：
所述第二设备的标识信息；
所述第二设备的电子产品代码信息；
所述第二设备的句柄信息。
可选地，所述第二反向散射信息包括以下至少一项：
所述第二设备的标识信息；
所述第二设备的电子产品代码信息；
所述第二设备的句柄信息。
由上述实施例的技术方案可知，本申请实施例通过监听由第二设备发送的第一反向散射信息，所述第一反向散射信息是由所述第二设备基于第一命令所发送的，再根据监听情况向第二设备发送第二命令，由第三设备通过第一命令触发对所述第二设备的质询操作，并由第二设备执行后续的质询操作，减少向所述第三设备的反馈过程，减少三方反向散射通信的时延与流程的复杂度，有利于提高通信效率。
基于上述实施例，可选地，所述第一传输模块702还用于监听由所述第三设备发送的所述第一命令。
可选地，所述第一传输模块702还用于监听由所述第二设备发送的第二反向散射信息，所述第二反向散射信息由所述第二命令所触发，所述第一反向散射信息与第二反向散射信息不同。
可选地，所述第一传输模块702还用于发送第一激励载波，所述第一激励载波用于所述第二设备进行所述第二反向散射信息的反向散射。
可选地，所述第二命令与所述第一激励载波之间时域上不重叠。
可选地，所述第二反向散射信息根据所述据第二激励载波进行反向散射，其中第二激励载波由所述第三设备发出。
由上述实施例的技术方案可知，本申请实施例通过先监听由第三设备发送的第一命令，再监听第二设备的第一反向散射信息，并在发送第二命令后监听第二设备的第二反向散射信息，从而可以减少向所述第三设备的反馈过程，减少三方反向散射通信的时延与流程的复杂度，有利于提高通信效率。
基于上述实施例，可选地，所述第一传输模块702还用于向所述第三设备发送第一反馈信息，所述第一反馈信息与所述第一反向散射信息相关。
可选地，所述第一传输模块702还用于向所述第三设备发送第二反馈信息，所述第二反馈信息与所述第一反向散射信息和/或第二反向散射信息相关。
由上述实施例的技术方案可知，本申请实施例通过在完成对第二设备的质询操作后，向所述第三设备发送第一反馈信息和/或第二反馈信息，从而可以减少向所述第三设备的反馈过程，减少三方反向散射通信的时延与流程的复杂度，有利于提高通信效率。
基于上述实施例，可选地，所述第一传输模块702用于在监听由N个第二设备发送的第一反向散射信息和/或第二反向散射信息的情况下，向第三设备发送第二反馈信息；其中，所述N为正整数，所述第二反馈信息与所述N个第二设备所对应的第一反向散射信息和/或第二反向散射信息相关。
由上述实施例的技术方案可知，本申请实施例通过监听N个第二设备的第一反向散射信息和/或第二反向散射信息后，将N个第二设备的质询结果统一汇总后向第三设备发送第二反馈信息，从而能够减少向所述第三设备的反馈过程，减少三方反向散射通信的时延与流程的复杂度，有利于提高通信效率。
本申请实施例中的反向散射通信的接入装置可以是电子设备，例如具有操作系统的电子设备，也可以是电子设备中的部件，例如集成电路或芯片。该电子设备可以是终端，也可以为除终端之外的其他设备。示例性的，终端可以包括但不限于上述所列举的终端11的类型，其他设备可以为服务器、网络附属存储器(Network Attached Storage，NAS)等，本申请实施例不作具体限定。
如图9所示，本申请实施例提供了一种反向散射通信的接入方法，该方法的执行主体为反向散射通信系统中的第三设备，换言之，该方法可以由安装在第三设备的软件或硬件来执行。所述方法包括：
S810、第三设备从第一设备接收第一反馈信息和/或第二反馈信息；
其中，所述第一反馈信息与所述第二设备的第一反向散射信息相关，所述第二反馈信息与所述第二设备的第一反向散射信息和/或第二反向散射信息相关，所述第一反向散射信息由第一命令触发，所述第一命令由所述第三设备发送，所述第二反向散射信息由第二命令触发，所述第二命令由所述第二设备发送，所述第一命令与第二命令不同，所述第一反向散射信息与所述第二反向散射信息不同。
可选地，所述第一命令包括以下至少一项命令：
选择命令；
查询类型命令；
接入命令。
可选地，在步骤S810之前，所述方法还包括：
所述第三设备向第二设备发送第一命令，所述第一命令用于触发所述第二设备发送所述第一反向散射信息。
可选地，在向第二设备发送第一命令之后，所述方法还包括：
所述第三设备向所述第二设备发送第二激励载波，所述第二激励载波用于使所述第二设备发送第二反向散射信息。
可选地，所述第三设备向所述第二设备发送第二激励载波满足以下至少一项：
在所述第三设备发送完所述第一命令所在时间单元的结束时刻起的第一时间间隔内，所述第三设备向所述第二设备发送第二激励载波；
在所述第三设备发送完所述第一命令所在时间单元的结束时刻起的第二时间间隔之后所述第三设备向所述第二设备发送第二激励载波；
其中，所述第二时间间隔小于或等于所述第一时间间隔。
可选地，所述第一反向散射信息或第二反向散射信息包括以下至少一项：
所述第二设备的标识信息；
所述第二设备的电子产品代码信息；
所述第二设备的句柄信息。
可选地，所述第三设备向第二设备发送第一命令，包括：
所述第三设备向N个第二设备发送第一命令；
其中，相邻的第一命令的时间间隔大于或等于第三时间间隔，所述N为正整数。
可选地，所述第二反馈信息与所述N个第二设备的第一反向散射信息和/或第二反向散射信息相关。
步骤S810可以实现如图2-图5所示的方法实施例，并得到相同的技术效果，重复部分此处不再赘述。
由上述实施例的技术方案可知，本申请实施例通过向第二设备发送第一命令，从第一设备接收第一反馈信息和/或第二反馈信息，将所述第二设备的质询操作过程中的命令进行分流分别由第三设备和第二设备发送，由第三设备通过第一命令触发对所述第二设备的质询操作，并由第二设备执行后续的质询操作，再将接收到的N个第二设备的质询结果统一汇总后发送给第三设备，从而能够减少向所述第三设备的反馈过程，减少三方反向散射通信的时延与流程的复杂度，有利于提高通信效率。
本申请实施例提供的反向散射通信的接入方法，执行主体可以为反向散射通信的接入装置。本申请实施例中以反向散射通信的接入装置执行反向散射通信的接入方法为例，说明本申请实施例提供的反向散射通信的接入装置。
如图10所示，所述反向散射通信的接入装置包括：第二传输模块901和第二执行模块902。
所述第二传输模块901从第一设备接收第一反馈信息和/或第二反馈信息；所述第二执行模块902，用于根据所述第一反馈信息和/或第二反馈信息获取第二设备的质询结果；其中，所述第一反馈信息与所述第二设备的第一反向散射信息相关，所述第二反馈信息与所述第二设备的第一反向散射信息和/或第二反向散射信息相关，所述第一反向散射信息由第一命令触发，所述第一命令由所述第三设备发送，所述第二反向散射信息由第二命令触发，所述第二命令由所述第二设备发送，所述第一命令与第二命令不同，所述第一反向散射信息与所述第二反向散射信息不同。
可选地，所述第一命令包括以下至少一项命令：
选择命令；
盘点命令；
接入命令。
可选地，第二传输模块901还用于向第二设备发送第一命令，所述第一命令用于触发所述第二设备发送所述第一反向散射信息。
可选地，在向第二设备发送第一命令之后，所述方法还包括：
所述第三设备向所述第二设备发送第二激励载波，所述第二激励载波用于使所述第二设备进行第一反向散射信息的反向散射。
可选地，向所述第二设备发送第二激励载波满足以下至少一项：
在发送完所述第一命令所在时间单元的结束时刻起的第一时间间隔内，向所述第二设备发送第二激励载波；
在发送完所述第一命令所在时间单元的结束时刻起的第二时间间隔之后 向所述第二设备发送第二激励载波；
其中，所述第二时间间隔小于或等于所述第一时间间隔。
可选地，所述第一反向散射信息或第二反向散射信息包括以下至少一项：
所述第二设备的标识信息；
所述第二设备的电子产品代码信息；
所述第二设备的句柄信息。
可选地，第二传输模块901用于向N个第二设备发送第一命令；
其中，相邻的第一命令的时间间隔大于或等于第三时间间隔，所述N为正整数。
可选地，所述第二反馈信息与所述N个第二设备的第一反向散射信息和/或第二反向散射信息相关。
由上述实施例的技术方案可知，本申请实施例通过向第二设备发送第一命令，从第一设备接收第一反馈信息和/或第二反馈信息，将所述第二设备的质询操作过程中的命令进行分流分别由反向散射通信的接入装置和第二设备发送，由反向散射通信的接入装置通过第一命令触发对所述第二设备的质询操作，并由第二设备执行后续的质询操作，再将接收到的N个第二设备的质询结果统一汇总后发送给反向散射通信的接入装置，从而能够减少向所述第三设备的反馈过程，减少三方反向散射通信的时延与流程的复杂度，有利于提高通信效率。
本申请实施例中的反向散射通信的接入装置可以是电子设备，例如具有操作系统的电子设备，也可以是电子设备中的部件，例如集成电路或芯片。该电子设备可以是终端，也可以为除终端之外的其他设备。示例性的，终端可以包括但不限于上述所列举的终端11的类型，其他设备可以为服务器、网络附属存储器(Network Attached Storage，NAS)等，本申请实施例不作具体限定。
本申请实施例提供的反向散射通信的接入装置能够实现图9的方法实施例实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
可选的，如图11所示，本申请实施例还提供一种通信设备1000，包括处理器1001和存储器1002，存储器1002上存储有可在所述处理器1001上运行的程序或指令，例如，该通信设备1000为终端时，该程序或指令被处理器1001执行时实现上述反向散射通信的接入方法实施例的各个步骤，且能达到相同的技术效果。该通信设备1000为网络侧设备时，该程序或指令被处理器1001执行时实现上述反向散射通信的接入方法实施例的各个步骤，且能达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供一种终端，包括处理器和通信接口，处理器用于监听由第二设备发送的第一反向散射信息，通信接口用于根据监听情况向第二设备发送第二命令。该终端实施例与上述终端侧方法实施例对应，上述方法实施例的各个实施过程和实现方式均可适用于该终端实施例中，且能达到相同的技术效果。具体地，图12为实现本申请实施例的一种终端的硬件结构示 意图。
该终端1100包括但不限于：射频单元1101、网络模块1102、音频输出单元1103、输入单元1104、传感器1105、显示单元1106、用户输入单元1107、接口单元1108、存储器1109以及处理器1110等中的至少部分部件。
本领域技术人员可以理解，终端1100还可以包括给各个部件供电的电源(比如电池)，电源可以通过电源管理系统与处理器1110逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。图12中示出的终端结构并不构成对终端的限定，终端可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置，在此不再赘述。
应理解的是，本申请实施例中，输入单元1104可以包括图形处理单元(Graphics Processing Unit，GPU)11041和麦克风11042，GPU11041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元1106可包括显示面板11061，可以采用液晶显示器、有机发光二极管等形式来配置显示面板11061。用户输入单元1107包括触控面板11071以及其他输入设备11072中的至少一种。触控面板11071，也称为触摸屏。触控面板11071可包括触摸检测装置和触摸控制器两个部分。其他输入设备11072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
本申请实施例中，射频单元1101接收来自网络侧设备的下行数据后，可以传输给处理器1110进行处理；另外，射频单元1101可以向网络侧设备发送上行数据。通常，射频单元1101包括但不限于天线、放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器1109可用于存储软件程序或指令以及各种数据。存储器1109可主要包括存储程序或指令的第一存储区和存储数据的第二存储区，其中，第一存储区可存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外，存储器1109可以包括易失性存储器或非易失性存储器，或者，存储器1109可以包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DRRAM)。本申请实施例中的存储器1109包括但不限于这些和任意其它适合类型的存储器。
处理器1110可包括一个或多个处理单元；可选的，处理器1110集成应 用处理器和调制解调处理器，其中，应用处理器主要处理涉及操作系统、用户界面和应用程序等的操作，调制解调处理器主要处理无线通信信号，如基带处理器。可以理解的是，上述调制解调处理器也可以不集成到处理器1110中。
其中，处理器1110，用于监听由第二设备发送的第一反向散射信息，所述第一反向散射信息是由所述第二设备基于第一命令所发送的，所述第一命令由第三设备发送；
射频单元1101，用于根据监听情况向第二设备发送第二命令；其中，所述第一命令与第二命令不同。
可选地，所述第一设备为网络侧设备和终端中的一者，所述第三设备为所述网络侧设备和终端中的另一者，所述第二设备为反向散射通信设备。
可选地，所述第一命令或所述第二命令包括以下至少一项：
选择命令；
查询类型命令；
接入命令。
可选地，所述第二命令用于响应所述第一反向散射信息的监听情况。
可选地，所述第一反向散射信息包括以下至少一项：
所述第二设备的标识信息；
所述第二设备的电子产品代码信息；
所述第二设备的句柄信息。
可选地，所述第二反向散射信息包括以下至少一项：
所述第二设备的标识信息；
所述第二设备的电子产品代码信息；
所述第二设备的句柄信息。
本申请实施例减少向所述第三设备的反馈过程，减少三方反向散射通信的时延与流程的复杂度，有利于提高通信效率。
基于上述实施例，可选地，所述射频单元1101还用于监听由所述第三设备发送的所述第一命令。
可选地，所述射频单元1101还用于监听由所述第二设备发送的第二反向散射信息，所述第二反向散射信息由所述第二命令所触发，所述第一反向散射信息与第二反向散射信息不同。
可选地，所述射频单元1101还用于发送第一激励载波，所述第一激励载波用于所述第二设备进行所述第二反向散射信息的反向散射。
可选地，所述第二命令与所述第一激励载波之间时域上不重叠。
可选地，所述第二反向散射信息根据所述据第二激励载波进行反向散射，其中第二激励载波由所述第三设备发出。
本申请实施例可以减少向所述第三设备的反馈过程，减少三方反向散射通信的时延与流程的复杂度，有利于提高通信效率。
基于上述实施例，可选地，所述射频单元1101还用于向所述第三设备发 送第一反馈信息，所述第一反馈信息与所述第一反向散射信息相关。
可选地，所述射频单元1101还用于向所述第三设备发送第二反馈信息，所述第二反馈信息与所述第一反向散射信息和/或第二反向散射信息相关。
本申请实施例可以减少向所述第三设备的反馈过程，减少三方反向散射通信的时延与流程的复杂度，有利于提高通信效率。
基于上述实施例，可选地，所述射频单元1101用于在监听由N个第二设备发送的第一反向散射信息和/或第二反向散射信息的情况下，向第三设备发送第二反馈信息；其中，所述N为正整数，所述第二反馈信息与所述N个第二设备所对应的第一反向散射信息和/或第二反向散射信息相关。
本申请实施例能够减少向所述第三设备的反馈过程，减少三方反向散射通信的时延与流程的复杂度，有利于提高通信效率。
本申请实施例还提供一种网络侧设备，包括处理器和通信接口，处理器用于根据所述第一反馈信息和/或第二反馈信息获取第二设备的质询结果，通信接口用于从第一设备接收第一反馈信息和/或第二反馈信息。该网络侧设备实施例与上述网络侧设备方法实施例对应，上述方法实施例的各个实施过程和实现方式均可适用于该网络侧设备实施例中，且能达到相同的技术效果。
具体地，本申请实施例还提供了一种网络侧设备。如图13所示，该网络侧设备1200包括：天线121、射频装置122、基带装置123、处理器124和存储器125。天线121与射频装置122连接。在上行方向上，射频装置122通过天线121接收信息，将接收的信息发送给基带装置123进行处理。在下行方向上，基带装置123对要发送的信息进行处理，并发送给射频装置122，射频装置122对收到的信息进行处理后经过天线121发送出去。
以上实施例中网络侧设备执行的方法可以在基带装置123中实现，该基带装置123包括基带处理器。
基带装置123例如可以包括至少一个基带板，该基带板上设置有多个芯片，如图13所示，其中一个芯片例如为基带处理器，通过总线接口与存储器125连接，以调用存储器125中的程序，执行以上方法实施例中所示的网络设备操作。
该网络侧设备还可以包括网络接口126，该接口例如为通用公共无线接口(common public radio interface，CPRI)。
具体地，本申请实施例的网络侧设备1200还包括：存储在存储器125上并可在处理器124上运行的指令或程序，处理器124调用存储器125中的指令或程序执行图10所示各模块执行的方法，并达到相同的技术效果，为避免重复，故不在此赘述。
本申请实施例还提供一种可读存储介质，所述可读存储介质上存储有程序或指令，该程序或指令被处理器执行时实现上述反向散射通信的接入方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
其中，所述处理器为上述实施例中所述的终端中的处理器。所述可读存储介质，包括计算机可读存储介质，如计算机只读存储器ROM、随机存取存 储器RAM、磁碟或者光盘等。
本申请实施例另提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现上述反向散射通信的接入方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
本申请实施例另提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现上述反向散射通信的接入方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供了一种反向散射通信的接入系统，包括：第一设备、第二设备及第三设备，所述第一设备可用于执行如上所述的反向散射通信的接入方法的步骤，所述第三设备可用于执行如上所述的反向散射通信的接入方法的步骤。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以计算机软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (27)

  1. 一种反向散射通信的接入方法，包括：
    第一设备监听由第二设备发送的第一反向散射信息，所述第一反向散射信息是由所述第二设备基于第一命令所发送的，所述第一命令由第三设备发送；
    所述第一设备根据监听情况向所述第二设备发送第二命令；
    其中，所述第一命令与所述第二命令不同。
  2. 根据权利要求1所述的方法，其中，在向所述第二设备发送第二命令之前，所述方法还包括：
    所述第一设备监听由所述第三设备发送的所述第一命令。
  3. 根据权利要求1所述的方法，其中，在所述第一设备监听由第二设备发送的第一反向散射信息之后，所述方法还包括：
    所述第一设备向所述第三设备发送第一反馈信息，所述第一反馈信息与所述第一反向散射信息相关。
  4. 根据权利要求1所述的方法，其中，在向第二设备发送第二命令之后，所述方法还包括：
    所述第一设备监听由所述第二设备发送的第二反向散射信息，所述第二反向散射信息由所述第二命令所触发，所述第一反向散射信息与所述第二反向散射信息不同。
  5. 根据权利要求4所述的方法，其中，在所述第一设备监听由所述第二设备发送的第二反向散射信息之后，所述方法还包括：
    所述第一设备向所述第三设备发送第二反馈信息，所述第二反馈信息与所述第一反向散射信息和/或所述第二反向散射信息相关。
  6. 根据权利要求5所述的方法，其中，所述第一设备向所述第三设备发送第二反馈信息，包括：
    在所述第一设备监听由N个第二设备发送的第一反向散射信息和/或第二反向散射信息的情况下，所述第一设备向所述第三设备发送第二反馈信息；其中，所述N为正整数，所述第二反馈信息与所述N个第二设备所对应的第一反向散射信息和/或第二反向散射信息相关。
  7. 根据权利要求1所述的方法，其中，所述第一命令或所述第二命令包括以下至少一项：
    选择命令；
    盘点命令；
    接入命令。
  8. 根据权利要求1所述的方法，其中，所述第二命令用于响应所述第一反向散射信息的监听情况。
  9. 根据权利要求1所述的方法，其中，所述第一反向散射信息包括以下至少一项：
    所述第二设备的标识信息；
    所述第二设备的电子产品代码信息；
    所述第二设备的句柄handle信息。
  10. 根据权利要求4所述的方法，其中，所述第二反向散射信息包括以下至少一项：
    所述第二设备的标识信息；
    所述第二设备的电子产品代码信息；
    所述第二设备的句柄handle信息。
  11. 根据权利要求4所述的方法，其中，在监听由所述第二设备发送的第二反向散射信息之前，所述方法还包括：
    所述第一设备发送第一激励载波，所述第一激励载波用于所述第二设备发送所述第二反向散射信息。
  12. 根据权利要求11所述的方法，其中，所述第二命令与所述第一激励载波之间时域上不重叠。
  13. 根据权利要求5所述的方法，其中，所述第二反向散射信息根据第二激励载波进行反向散射，其中所述第二激励载波由所述第三设备发出。
  14. 根据权利要求1所述的方法，其中，所述第一设备为网络侧设备和终端中的一者，所述第三设备为所述网络侧设备和终端中的另一者，所述第二设备为反向散射通信设备。
  15. 一种反向散射通信的接入装置，包括：
    第一执行模块，用于监听由第二设备发送的第一反向散射信息，所述第一反向散射信息是由所述第二设备基于第一命令所发送的，所述第一命令由第三设备发送；
    第一传输模块，用于根据监听情况向所述第二设备发送第二命令；
    其中，且所述第一命令与所述第二命令不同。
  16. 一种反向散射通信的接入方法，包括：
    第三设备从第一设备接收第一反馈信息和/或第二反馈信息；
    其中，所述第一反馈信息与第二设备的第一反向散射信息相关，所述第二反馈信息与所述第二设备的第一反向散射信息和/或第二反向散射信息相关，所述第一反向散射信息由第一命令触发，所述第一命令由所述第三设备发送，所述第二反向散射信息由第二命令触发，所述第二命令由所述第二设备发送，所述第一命令与第二命令不同，所述第一反向散射信息与所述第二反向散射信息不同。
  17. 根据权利要求16所述的方法，其中，在从第一设备接收第一反馈信息和/或第二反馈信息之前，所述方法还包括：
    所述第三设备向所述第二设备发送所述第一命令，所述第一命令用于触发所述第二设备发送所述第一反向散射信息。
  18. 根据权利要求16所述的方法，其中，所述第一命令包括以下至少一项命令：
    选择命令；
    盘点命令；
    接入命令。
  19. 根据权利要求17所述的方法，其中，在向所述第二设备发送所述第一命令之后，所述方法还包括：
    所述第三设备向所述第二设备发送第二激励载波，所述第二激励载波用于所述第二设备发送所述第二反向散射信息。
  20. 根据权利要求19所述的方法，其中，所述第三设备向所述第二设备发送第二激励载波满足以下至少一项：
    在所述第三设备发送完所述第一命令所在时间单元的结束时刻起的第一时间间隔内，所述第三设备向所述第二设备发送第二激励载波；
    在所述第三设备发送完所述第一命令所在时间单元的结束时刻起的第二时间间隔之后所述第三设备向所述第二设备发送第二激励载波；
    其中，所述第二时间间隔小于或等于所述第一时间间隔。
  21. 根据权利要求20所述的方法，其中，所述第一反向散射信息或第二反向散射信息包括以下至少一项：
    所述第二设备的标识信息；
    所述第二设备的电子产品代码信息；
    所述第二设备的句柄信息。
  22. 根据权利要求17所述的方法，其中，所述第三设备向所述第二设备发送所述第一命令，包括：
    所述第三设备向N个第二设备发送所述第一命令；
    其中，相邻的第一命令的时间间隔大于或等于第三时间间隔，所述N为正整数。
  23. 根据权利要求22所述的方法，其中，所述第二反馈信息与所述N个第二设备的第一反向散射信息和/或第二反向散射信息相关。
  24. 一种反向散射通信的接入装置，包括：
    第二传输模块，从第一设备接收第一反馈信息和/或第二反馈信息；
    第二执行模块，根据所述第一反馈信息和/或第二反馈信息获取第二设备的质询结果；
    其中，所述第一反馈信息与所述第二设备的第一反向散射信息相关，所述第二反馈信息与所述第二设备的第一反向散射信息和/或第二反向散射信息相关，所述第一反向散射信息由第一命令触发，所述第一命令由所述第三设备发送，所述第二反向散射信息由第二命令触发，所述第二命令由所述第二设备发送，所述第一命令与第二命令不同，所述第一反向散射信息与所述第二反向散射信息不同。
  25. 一种终端，包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求1至14任一项所述的反向散射通信的接入方法的步骤。
  26. 一种网络侧设备，包括处理器和存储器，所述存储器存储可在所述 处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求16至23任一项所述的反向散射通信的接入方法的步骤。
  27. 一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如权利要求1-14任一项所述的反向散射通信的接入方法，或者实现如权利要求16至23任一项所述的反向散射通信的接入方法的步骤。
PCT/CN2023/097388 2022-06-06 2023-05-31 反向散射通信的接入方法、装置、终端及网络侧设备 WO2023236826A1 (zh)

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