WO2022161338A1 - 一种标签定位方法以及相关设备 - Google Patents

一种标签定位方法以及相关设备 Download PDF

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Publication number
WO2022161338A1
WO2022161338A1 PCT/CN2022/073684 CN2022073684W WO2022161338A1 WO 2022161338 A1 WO2022161338 A1 WO 2022161338A1 CN 2022073684 W CN2022073684 W CN 2022073684W WO 2022161338 A1 WO2022161338 A1 WO 2022161338A1
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WO
WIPO (PCT)
Prior art keywords
signaling
transmitter
target
reader
tag
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Application number
PCT/CN2022/073684
Other languages
English (en)
French (fr)
Inventor
冯玺宝
吴毅凌
鲁振伟
李晨琬
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP22745213.3A priority Critical patent/EP4276685A4/en
Publication of WO2022161338A1 publication Critical patent/WO2022161338A1/zh
Priority to US18/358,441 priority patent/US20230375686A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
    • G06K7/10356—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers using a plurality of antennas, e.g. configurations including means to resolve interference between the plurality of antennas
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
    • G01S13/765—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted with exchange of information between interrogator and responder
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0295—Proximity-based methods, e.g. position inferred from reception of particular signals
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
    • G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisions for transferring data to distant stations, e.g. from a sensing device
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/08—Logistics, e.g. warehousing, loading or distribution; Inventory or stock management
    • G06Q10/087—Inventory or stock management, e.g. order filling, procurement or balancing against orders
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/66—Radar-tracking systems; Analogous systems
    • G01S13/72—Radar-tracking systems; Analogous systems for two-dimensional tracking, e.g. combination of angle and range tracking, track-while-scan radar
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/14—Determining absolute distances from a plurality of spaced points of known location

Definitions

  • the present application relates to the field of communications, and in particular, to a label positioning method and related equipment.
  • Radio frequency identification (RFID) technology is a non-contact automatic identification technology.
  • the interrogator charges the tag by sending an excitation signal to the tag.
  • the tag receives the signaling sent by the target reader, and sends signaling to the target reader through the reflected signal. In this way, the target The reader can identify the ID of the tag, and read and write operations on the tag.
  • Labels are widely used in localization scenarios. After the tag receives the identification contained in the information sent by the reader, the tag sends the identification to the server and other positioning devices through the communication network. The positioning device will place the tag within the range covered by the reader according to the position of the pre-stored reader.
  • the reader implements tag positioning by sending RFID signaling to the tag.
  • the information contained in the protocol signaling sent between the reader and the tag is less, and the tag positioning efficiency is low.
  • the present application provides a method for locating a tag.
  • the target reader can determine which transmitter the target tag is within the coverage of the first transmitter according to the identity (identity, ID) of the first transmitter included in the signaling sent by the target tag. In this way, the position of the label can be more accurately determined, which improves the efficiency of label positioning.
  • a first aspect of the present application provides a tag positioning method.
  • a target tag receives a first signaling sent by a target reader/writer, where the target reader/writer includes a first transmitter and a first receiver, and the first signaling Including the identifier of the first transmitter; the target tag sends the second signaling to the target reader, and the second signaling includes the identifier of the first transmitter.
  • the target tag receives the first signaling sent by the target reader/writer, and the first signaling includes the identity ID of the first transmitter.
  • the target tag sends the second signaling to the target reader/writer, and the second signaling includes the ID of the first transmitter.
  • the target reader can determine which transmitter the target tag is under the coverage of the first transmitter included in the signaling sent by the target tag, so as to more accurately determine the position of the tag and improve tag positioning. s efficiency.
  • the first signaling includes inventory signaling
  • the inventory signaling includes selection signaling (Select), query signaling (Query), and acknowledgement signaling (acknowledge, ACK), negative acknowledgement (NAK) and/or query type signaling (Queryrep).
  • the target reader/writer adopts a transceiver separation architecture, and after the target reader/writer is split, it includes at least a first transmitter and a first receiver.
  • the target reader/writer may also include a second receiver. More transmitters such as transmitters, which are not specifically limited here.
  • the target reader/writer sends first signaling to the target tag.
  • the first signaling may be inventory signaling, and inventory signaling refers to signaling in an inventory process.
  • the inventory signaling may be selection signaling Select, query signaling Query, confirmation signaling ACK, unacknowledged signaling NAK, and/or query signaling Queryrep, which is not specifically limited here.
  • a variety of inventory signaling includes the identification of the first transmitter, the target tag can send the identification of the first transmitter to the target reader, and the identification of the first transmitter can be used to locate the target tag, which improves the target reading. The accuracy of the device for label positioning.
  • the second signaling includes inventory signaling
  • the inventory signaling includes reply signaling Reply and/or electronic product code (electronic product code, EPC).
  • the target tag can send the identification of the first transmitter to the target reader through Reply signaling and/or electronic product code. After receiving the identification of the first transmitter, the target reader can use The mark locates the target tag, which improves the accuracy of the target reader for tag positioning.
  • the method further includes: the target tag receives a third signaling sent by the target reader/writer, where the third signaling is used to indicate the target tag Send second signaling to the target reader/writer.
  • the tag does not carry the identifier of the transmitter in the inventory signaling.
  • the target reader/writer sends an instruction to the target tag through a third signaling, and the third signaling is a proprietary signaling. command, which is used to instruct the target tag to send the identifier of the first transmitter to the target reader/writer.
  • the identifier enable bit of the transmitter carried in the inventory signaling by the reader is turned off, the inventory signaling sent by the tag to the reader will not include the identifier of the transmitter. Therefore, the reader can enable the tag to send the identifier of the transmitter of the reader to the reader through the special signaling after inventory.
  • This possible implementation provides a target tag to send the target reader the first transmitter's identifier The way of implementing the logo improves the flexibility of the scheme.
  • the target reader/writer includes a second transmitter, and the method further includes: confirming that the target tag meets reporting conditions; the target tag reads and writes to the target The transmitter sends fourth signaling, where the fourth signaling includes the identifier of the second transmitter.
  • the target tag If the target tag confirms that the reporting conditions are met, the target tag sends a fourth signaling to the target reader/writer.
  • the reporting condition of the tag may be sent by the reader, and the reporting condition of the tag may also be obtained by other methods, which are not specifically limited here.
  • the reporting condition may be the label switching transmitter, the reporting condition may also be that the label arrives at the preset reporting time, and the reporting condition may also be other conditions, which are not specifically limited here.
  • the target reader includes a first transmitter and a second transmitter, and the first transmitter and the second transmitter are not the same network device.
  • the target tag communicates with the target reader through the first transmitter.
  • the target tag moves, it is assumed that the target tag exceeds the coverage of the first transmitter and enters the coverage of the second transmitter. At this time, the target tag will switch the transmitter and communicate with the target reader through the second transmitter. .
  • the coverage areas of the first transmitter and the second transmitter overlap, and the target tag is switched from the first transmitter to the second transmitter.
  • the identifier of the transmitter included in the signaling sent by the target reader once again received by the target tag is the identifier of the second transmitter
  • the target tag confirms that the identifier of the received transmitter is switched from the identifier of the first transmitter to that of the first transmitter.
  • the identity of the second transmitter that is, the identity of the received transmitter, is changed.
  • the target tag confirms that the reporting condition is met, and the target tag can send the identifier of the second transmitter to the target reader through the fourth signaling.
  • the fourth signaling may be signaling (Select, Query, Reply, ACK, NAK, EPC, Queryrep, and/or Queryadjust, etc.) included in the inventory signaling, and the signaling included in the fourth signaling may also be It is other signaling than the inventory signaling, which is not specifically limited here.
  • the first transmitter and the second transmitter are the same network device, and after the target tag confirms that the preset reporting time is reached, the target tag sends the identifier of the second transmitter (the first transmitter's identifier) to the ID) and report it to the receiver of the reader.
  • the preset reporting time can be obtained by a technician by configuring the target tag itself as the target tag, and the preset reporting time can be sent by the receiver to the target tag through inventory signaling or other signaling.
  • the preset reporting time can also be obtained in other ways.
  • the reader can specify the target tag through the first signaling to report the identifier of the first transmitter in a specific signaling, which is not specifically limited here.
  • the first signaling may further include the reporting time of the identifier of the first transmitter.
  • the reporting time of the identifier of the first transmitter sent by the target reader to the target tag through the first signaling can specify that the target tag sends the identifier of the first transmitter to the target reader at a specific time, and the reporting time can specify that the target tag send the first transmitter to the target reader after a certain period of time
  • the inventory signaling Select includes a reporting time, and the reporting time indicates that the tag carries the identifier of the transmitter at the moment of sending the EPC.
  • the reader sends the Select carrying the reporting time to the tag, and the tag will carry the identifier of the transmitter when sending the EPC after receiving the Select.
  • the reporting time may also mean that the target tag sends the identifier of the first transmitter to the target reader after receiving the third signaling mentioned in the above embodiment, which is not specifically limited here.
  • the target reader can configure the target tag to report the identification at different times in various ways, which improves the flexibility of the solution.
  • the first signaling includes the number of times of reporting the identity of the first transmitter.
  • the number of reporting times included in the first signaling indicates one reporting.
  • the reader can specify the target tag through the first signaling to report the identity of the first transmitter in a specific signaling. After the identification of the first transmitter is reported to the target reader in the specific signaling, other signaling except the specific signaling will no longer report the identification of the first transmitter to the target reader. It is assumed that the number of reporting times included in the first signaling indicates all reporting.
  • the reader may specify the target tag through the first signaling to report the identity of the first transmitter in all signaling sent to the reader.
  • the signaling mentioned in this embodiment may be signaling included in the inventory signaling, or may be other signaling than the inventory signaling, which is not specifically limited here.
  • the signaling before the target tag receives the first signaling may carry the identifier of the transmitter used last time, or may carry the invalid identifier, which is not specifically limited here.
  • the identifier of the first transmitter sent by the target tag to the reader can be included in any signaling, and the target reader can use multiple In this way, the signaling that carries the identity of the first transmitter is identified. In this possible way, the target reader can configure the target tag in various ways to report the identification in different ways, which improves the achievability of the solution.
  • the identifier of the first transmitter is transmitted in plain text, or the identifier of the first transmitter is transmitted in encryption.
  • the identifier of the first sender may be sent to the target reader by means of plaintext transmission.
  • the identifier of the first sender is transmitted to the target reader by means of encrypted transmission.
  • the target tag can encrypt the identifier of the first transmitter and the RN16 by XOR and send it to the target reader, and the target tag can also encrypt and send the identifier of the first transmitter to the target reader by other methods. There are no restrictions. This possible implementation provides two specific transmission forms, which improves the implementability of the solution.
  • a second aspect of the present application provides a tag positioning method.
  • a target reader/writer sends a first signaling to a target tag, where the target reader/writer includes a first transmitter and a first receiver, and the first signaling includes the identifier of the first transmitter; the target reader/writer receives the second signaling sent by the target tag, and the second signaling includes the identifier of the first transmitter; the target reader/writer The location of the target tag is predicted based on the identity of the first transmitter.
  • the target reader/writer sends the first signaling to the target tag, and the first signaling includes the identity ID of the first transmitter.
  • the target reader/writer receives the second signaling sent by the target tag, where the second signaling includes the ID of the first transmitter.
  • the target reader can determine which transmitter the target tag is under the coverage of the first transmitter included in the signaling sent by the target tag, so as to more accurately determine the position of the tag and improve tag positioning. s efficiency.
  • the first signaling includes inventory signaling
  • the inventory signaling includes selection signaling Select, query signaling Query, confirmation signaling ACK, and unacknowledged signaling NAK and/or query-like signaling Queryrep.
  • the target reader/writer adopts a transceiver separation architecture, and after the target reader/writer is split, it includes at least a first transmitter and a first receiver.
  • the target reader/writer may also include a second receiver. More transmitters such as transmitters, which are not specifically limited here.
  • the target reader/writer sends first signaling to the target tag.
  • the first signaling may be inventory signaling, and inventory signaling refers to signaling in an inventory process.
  • the inventory signaling may be selection signaling Select, query signaling Query, confirmation signaling ACK, unacknowledged signaling NAK, and/or query signaling Queryrep, which is not specifically limited here.
  • a variety of inventory signaling includes the identification of the first transmitter, the target tag can send the identification of the first transmitter to the target reader, and the identification of the first transmitter can be used to locate the target tag, which improves the target reading. The accuracy of the device for label positioning.
  • the second signaling includes inventory signaling
  • the inventory signaling includes reply signaling Reply and/or electronic product code EPC.
  • the target tag can send the identifier of the first transmitter to the target reader through Reply signaling and/or the electronic product code EPC. After receiving the identifier of the first transmitter, the target reader can Using the identifier to locate the target tag improves the accuracy of the target reader for tag positioning.
  • the method further includes: the target reader/writer sending a third signaling to the target tag, where the third signaling is used to instruct the target tag to send The target reader/writer sends the second signaling.
  • the tag does not carry the identifier of the transmitter in the inventory signaling.
  • the target reader/writer sends an instruction to the target tag through a third signaling, and the third signaling is a proprietary signaling. command, which is used to instruct the target tag to send the identifier of the first transmitter to the target reader/writer.
  • the identifier enable bit of the transmitter carried in the inventory signaling by the reader is turned off, the inventory signaling sent by the tag to the reader will not include the identifier of the transmitter. Therefore, the reader can enable the tag to send the identifier of the transmitter of the reader to the reader through the special signaling after inventory.
  • This possible implementation provides a target tag to send the target reader the first transmitter's identifier The way of implementing the logo improves the flexibility of the scheme.
  • the target reader/writer includes a third transmitter
  • the method further includes: the target reader/writer obtains the first configuration information through the first receiver, The first configuration information is used to indicate a position of the third transmitter and/or a deployment relationship among a plurality of third transmitters.
  • the first configuration information may be used to indicate the location of the third transmitter and/or the deployment relationship among multiple third transmitters.
  • the third transmitter refers to a transmitter in a subset of all transmitters in communication with the first receiver.
  • the first receiver can obtain the first configuration information through a network device such as a database or a server that stores a topology relationship, and the first receiver can also receive the first configuration information sent by one or more third transmitters.
  • a receiver may also acquire the first configuration information in other ways, which are not specifically limited here.
  • the target reader can know the position of each transmitter according to the first configuration information, and then determine the position of the tag according to the position of the transmitter and the identifier of the transmitter, which improves the implementability of the solution. .
  • the method further includes: the target reader/writer sends second configuration information to the transmitter through the receiver, where the second configuration information is used to indicate The configuration required for the target tag to communicate with the target reader.
  • the second configuration information is used to indicate the configuration required by the target tag to communicate with the target reader/writer. Assuming that the tag communicates with the reader through transmitter A, if the tag moves, after the reader predicts the movement trajectory of the tag, it can be inferred that the tag will communicate with the reader through transmitter B at the next moment.
  • the reader can send the second configuration information to the transmitter B. For example, the reader can add a mask (second configuration information) to the Selcet signaling sent to the transmitter B, so as to speed up the inventory speed of the reader for tags and improve the inventory efficiency.
  • the embodiments of the present application have the following advantages:
  • the target tag receives the first signaling sent by the target reader/writer, and the first signaling includes the identity ID of the first transmitter.
  • the target tag sends the second signaling to the target reader/writer, and the second signaling includes the ID of the first transmitter.
  • the target reader can determine which transmitter the target tag is under the coverage of the first transmitter included in the signaling sent by the target tag, so as to more accurately determine the position of the tag and improve tag positioning. s efficiency.
  • FIG. 1 is a schematic diagram of an embodiment of a tag and a reader/writer provided by the application;
  • FIG. 2 is a schematic diagram of an embodiment of an inventory process provided by the present application.
  • FIG. 3 is a schematic diagram of another embodiment of the inventory process of the label provided by the present application.
  • FIG. 4 is a schematic diagram of an embodiment of a label positioning system provided by the present application.
  • FIG. 5 is a schematic diagram of an embodiment of a label positioning method provided by the present application.
  • FIG. 6 is a schematic diagram of another embodiment of the label positioning method provided by the present application.
  • FIG. 7 is a schematic diagram of another embodiment of the label positioning method provided by the present application.
  • FIG. 8 is a schematic diagram of another embodiment of the label positioning method provided by the present application.
  • FIG. 9 is a schematic diagram of another embodiment of the label positioning method provided by the present application.
  • FIG. 10 is a schematic diagram of another embodiment of the label positioning method provided by the application.
  • 11a is a schematic diagram of another embodiment of the label positioning method provided by the present application.
  • 11b is a schematic diagram of another embodiment of the label positioning method provided by the present application.
  • FIG. 12 is a schematic structural diagram of a labeling device provided by the application.
  • FIG. 13 is a schematic structural diagram of a reader/writer provided by the application.
  • FIG. 14 is a schematic structural diagram of a network device provided by this application.
  • FIG. 1 is a schematic diagram of an embodiment of a tag and a reader/writer provided by the present application.
  • RFID technology is a non-contact automatic identification technology.
  • the reader/writer charges the tag by sending an excitation signal to the low-cost tag.
  • the tag receives the signaling sent by the reader, and sends signaling to the reader through the reflected signal. In this way, the reader can identify the tag. ID, the reader can read and write the tag, and the reader can also perform other operations on the tag, which is not limited here.
  • Labels are widely used in localization scenarios. After the tag receives the identification contained in the information sent by the reader, the tag sends the identification to the server and other positioning devices through the communication network. The positioning device will place the tag within the range covered by the reader according to the position of the pre-stored reader.
  • the reader implements tag positioning by sending RFID signaling to the tag.
  • the receiver cannot confirm which transmitter the tag is covered by, and obtains the positioning information of the tag through the signal quality, the positioning accuracy is not enough, and the positioning efficiency is low.
  • the present application proposes a tag positioning method.
  • the target tag receives the first signaling sent by the target reader/writer, and the first signaling includes the identifier of the first transmitter.
  • the target tag sends the second signaling to the target reader/writer, and the second signaling includes the identifier of the first transmitter.
  • the target reader/writer can determine which transmitter the target tag is under the coverage of which transmitter according to the identifier of the first transmitter included in the second signaling sent by the target tag, more accurately determine the position of the tag, and improve the efficiency of label positioning.
  • FIG. 2 is a schematic diagram of an embodiment of an inventory process provided by the present application.
  • FIG. 2 Please refer to FIG. 2 , and the following briefly introduces the inventory process of the label in FIG. 2 .
  • the reader/writer sends a selection signaling (Select) to the tag, and Select is used to select a subset of tags, and the subset of tags includes multiple tags.
  • Select can also modify the inventory flag of a certain session.
  • the reader/writer sends a query signaling (Query) to the tag, and Query is used to select a session from multiple sessions, and select the tag whose inventory flag bit matches in the session. Furthermore, the inventory process of the tags in the subset selected by Select is initialized, and the tags in the subset selected by Selcet signaling each select a random number to initialize a counter (counter).
  • Query query signaling
  • Counter counter
  • the tag sends a reply signaling (Reply) to the reader, and the RN16 included in the Reply is used to indicate the temporary identity of the tag.
  • the reader sends the acknowledgment signaling ACK to the tag.
  • the ACK is used to indicate that the reader successfully receives the RN16 sent by the tag.
  • the ACK includes the 16-bit random number fed back by the tag, which is used by the tag to check whether the ACK is correct.
  • the tag confirms that the 16-bit random number included in the ACK is the same as the RN16 sent by the tag, then the tag sends the electronic product code to the reader, and EPC is used to indicate the real ID of the tag.
  • the reader/writer If the reader/writer confirms that the EPC sent by the tag is valid, the reader/writer sends query signaling (QueryRep or QueryAdjust) to the tag. After receiving the counter-1 of all tags of the query signaling, or initializing the counter according to the random number reselected by QueryAdjust, the inventory process ends.
  • query signaling QueryRep or QueryAdjust
  • the reader/writer If the reader/writer confirms that the EPC sent by the tag is invalid, the reader/writer sends an unacknowledged signaling (negative acknowledgement, NAK) to the tag.
  • NAK negative acknowledgement
  • FIG. 3 is a schematic diagram of another embodiment of the inventory process of the label provided by the present application.
  • FIG. 3 Please refer to FIG. 3 , and the inventory process in FIG. 3 will be briefly introduced below.
  • the reader When multiple tags send RN16 to the reader, if the reader confirms that there is a conflict between the RN16s sent by multiple tags, the reader will not send an ACK to the tag, but directly send QueryRep, skipping these conflicts. label, and directly carry out the subsequent inventory process. In addition, if the reader/writer does not detect the tag feedback to RN16, it will also directly carry out the subsequent inventory process (such as sending QueryRep).
  • T1 is the time interval between the end of the signaling by the reader and the start of signaling by the tag, and the tag should meet this timing requirement when processing.
  • T4 is the time interval between the end of one signaling sent by the reader and the beginning of the next signaling (the middle tag has no feedback signaling).
  • T3 is the additional delay that the reader needs to wait when there is no tag feedback during the inventory process of the reader.
  • T2 is the time interval between the end of the tag sending signaling and the reader starting to send signaling.
  • FIG. 4 is a schematic diagram of an embodiment of a tag positioning system provided by the present application.
  • the tag positioning system provided by the present application may include a reader/writer 101 , a tag 102 and a tag 103 .
  • the reader/writer 101 included in the tag positioning system provided by the present application may be split into a receiver (receiver) 104 , a transmitter (helper) 105 and a transmitter 106 .
  • the link between the air interface of the target reader/writer and the air interface of the target tag is called the forward link, and the link from the tag to the reader/writer is called the reverse link.
  • the transmitter can send the excitation signal to the tag on the forward link, and the receiver can receive the reflected signal sent by the tag on the reverse link.
  • the receiver after the receiver generates the RFID signaling, it sends the RFID signaling to the transmitter through the forward downlink, and the transmitter forwards the RFID signaling to the tag on the forward link.
  • the fronthaul link between the transmitter and the receiver can use the 5th generation new air interface (5th-Generation New Radio, 5G NR) technology to transmit signaling, and the transmitter and the receiver can pass
  • 5G NR 5th generation new air interface
  • 5G sidelink The fifth-generation policy link (5G sidelink) technology transmits signaling, and other technologies can also transmit signaling between the transmitter and the receiver, which is not limited here.
  • tags can be classified into passive tags, active tags, and semi-active tags according to the energy supply mode.
  • Active tags can be called active electronic tags, or active tags, which use the battery in the card to provide part or all of the energy for the microchip, but will not transmit data between the tag and the reader.
  • the advantage is that the recognition distance is longer (up to ten meters), the disadvantage is that the life is limited (3 to 10 years), and the price is high.
  • An active reader can monitor all active tags within 100 meters.
  • the battery power supply in the semi-passive tag is only an auxiliary support for the circuit in the tag that requires power supply to maintain data or the voltage required for the operation of the tag chip, and the tag circuit that consumes little power itself is powered.
  • the tag Before the tag enters the working state, it has been in a dormant state, which is equivalent to a passive tag.
  • the internal battery of the tag consumes very little energy, so the battery can be maintained for several years, or even up to 10 years.
  • the radio frequency signal sent by the reader When it is in the area, it is stimulated by the radio frequency signal sent by the reader.
  • the energy of information exchange between the tag and the reader is mainly supported by the radio frequency energy supplied by the reader (reflection modulation method), and the internal battery of the tag is supported.
  • the main function of the RFID tag is to make up for the lack of RF field strength at the location of the tag, and the energy of the battery inside the tag is not converted into RF energy.
  • Passive tags do not contain batteries and have no built-in batteries. When they are outside the reading range of the reader, the electronic tag is in a passive state. When it is within the reading range of the reader, the electronic tag is sent from the reader. Extract the power required for its operation from radio frequency energy. Passive electronic tags generally transmit information to the reader by means of reflection modulation. The practical range of passive tags is about 10 cm to several meters. Small weight and volume, long service life. However, its transmission distance is limited, and the transmission power of the reader is required to be large, and the power consumption of the transponder working circuit is small.
  • the tags 102 and 103 included in the tag positioning system provided by this application may be active tags, the tags 102 and 103 may be passive tags, and the tags 102 and 103 may also be semi-active tags. There is no limitation here.
  • the RFID system has other classification methods: according to different modulation methods, it can be divided into active type, passive type, and semi-active type; according to whether the stored information is rewritten, it can be divided into read-only tags and readable and writable tags. According to different packaging forms, it can be divided into credit card labels, linear labels, paper labels, glass tube labels, circular labels and special-purpose special-shaped labels. There is no difference in the inventory process between the labels of the different classification methods mentioned above.
  • FIG. 5 is a schematic diagram of an embodiment of a label positioning method provided by the present application.
  • an embodiment of a label positioning method provided by the present application includes steps 201 to 203 .
  • the target tag receives the first signaling sent by the target reader/writer, and accordingly, the target reader/writer sends the first signaling to the target tag.
  • the target reader/writer includes a first transmitter and a first receiver, and the first signaling includes the identity ID of the first transmitter.
  • the target reader/writer adopts a transceiver separation architecture. After the target reader/writer is split, it includes at least a first transmitter and a first receiver. Optionally, the target reader may also include a second transmitter, etc. The number of transmitters is not limited here.
  • the target reader/writer sends first signaling to the target tag.
  • the first signaling may be inventory signaling, and inventory signaling refers to signaling in an inventory process. Specifically, the inventory signaling may be selection signaling Select, query signaling Query, confirmation signaling ACK, unacknowledged signaling NAK, and/or query signaling Queryrep, which is not specifically limited here.
  • FIG. 6 is a schematic diagram of another embodiment of a label positioning method provided by the present application.
  • the identification of the first transmitter may be embodied in the form of an ID.
  • the ID of the first transmitter is allocated by a central control unit (Interrogator Receiver).
  • the ID of the first transmitter is carried in the Qurey signaling.
  • the Query shown in FIG. 6 includes an identification (Transmitter Id) field of the first transmitter, and the Transmitter Id field is used to indicate the ID of the first transmitter.
  • the Query can also include an enable bit of whether the Tag is sent to the Receiver.
  • the target reader can determine whether the target tag sends to the target reader in the next signaling by configuring the content of the enable bit. ID of the first transmitter.
  • Manner 1 The partial inventory signaling sent by the target reader/writer to the target tag carries the identifier of the first transmitter.
  • the reader/writer when the target reader/writer inventories the target tag, the reader/writer will first send Select and Query to the tag to carry out the inventory process.
  • the identifier of the first transmitter can be carried in Select and/or Query, so that when the inventory process starts, the tag can know the ID of the first transmitter, and carry the ID in the RN16 that replies to the target reader/writer. ID of the first sender.
  • the identifier of the first transmitter may also be carried in the ACK, NAK, Queryrep and/or Queryadjust, which is not specifically limited here.
  • Mode 2 All inventory signaling sent by the target reader/writer to the target tag carries the identifier of the first transmitter.
  • the Select, Query, ACK, NAK, Queryrep and/or Queryadjust sent by the target reader to the target tag all carry the identifier of the first transmitter.
  • the identifier of the first transmitter is also changed accordingly.
  • the target tag reports the changed identifier of the first transmitter to the target reader through the second signaling, and the target reader can know that the position of the target tag has changed, and can more accurately lock the position of the target tag.
  • the tag can be under the coverage of multiple transmitters. After the target reader switches the transmitter, the identifier of the first transmitter also changes, and the target tag can narrow the target through the coverage of multiple transmitters. The possible range of the position of the label realizes more precise positioning of the target label.
  • the target tag sends the second signaling to the target reader/writer, and correspondingly, the target reader/writer receives the second signaling sent by the target tag.
  • the second signaling includes the ID of the first transmitter.
  • the second signaling may be the reply signaling Reply in the inventory process
  • the second signaling may be the electronic product code EPC in the inventory process
  • the second signaling may also be other signaling, which is not specifically described here. limited.
  • FIG. 7 is a schematic diagram of an embodiment of a label positioning method provided by the present application.
  • the first transmitter identifier (Transmitter Id) field included in the Reply of the tag reply target reader/writer includes the identifier of the transmitter, and the implementation of including the transmitter identifier in the Reply is shown in FIG. 7 shown.
  • the target reader/writer predicts the position of the target tag according to the ID of the first transmitter.
  • the target reader/writer can predict the position of the target tag in different ways according to the ID of the first transmitter reported by the target tag, and the following examples will be described in detail.
  • FIG. 8 is a schematic diagram of another embodiment of the label positioning method provided by the present application.
  • the same tag may send inventory signaling through different transmitters during the process of the reader/writer inventorying the tag.
  • the tag sends inventory signaling through the transmitter with ID 1 at time t1, sends inventory signaling through the transmitter with ID 2 at time t2, sends inventory signaling through the transmitter with ID 3 at time t3, and sends inventory signaling at time t4 Inventory signaling is sent through the transmitter with ID 4.
  • the receiver can predict the location of the tag by the ID of the transmitter and the received signal strength indication (RSSI) of the inventory signaling sent by the tag at different times.
  • RSSI received signal strength indication
  • the receiver can also estimate the RSSI of the inventory signaling according to the inventory signaling returned by the tag. Since the parameters such as reverse link transmission loss and tag energy loss will basically not change during the signaling process between the tag and the reader, the RSSI received by the receiver at different times can be calculated by the following formula:
  • RSSI of the receiver transmitter power (Txpower)-forward link transmission loss-tag energy loss-reverse link transmission loss.
  • the energy loss difference of the forward link transmission loss under different transmitters can be applied to the positioning technology, and then the range of the label position can be determined through the forward link transmission loss.
  • FIG. 9 is a schematic diagram of an embodiment of a label positioning method provided by the present application.
  • the coverage of the transmitter may be divided by reference signal received power (RSRP) of the transmitter.
  • RSRP reference signal received power
  • transmitters 1, 2, 3, and 4 are evenly distributed, and it is considered that each RSRP measurement has a deviation, which is plus or minus 1.5dB respectively.
  • the final label position will be determined by 1 to the besieged area of the four focal points in the above figure. It is concentrated in the interval of ⁇ 434 square meters, and the average positioning accuracy is ⁇ 20m. In the case that the reader does not know the identifier of the transmitter, assuming that there are only transmitters 1, 2, 3, and 4 in the area, the coverage area is about 180*180, and the accuracy is ⁇ 180m. The positioning accuracy is improved by 80%.
  • FIG. 10 is a schematic diagram of another embodiment of the label positioning method provided by the present application.
  • t1, t2, t3, and t4 represent different inventory times respectively. 1, 2, 3, and 4 respectively represent transmitters with different IDs.
  • the sender ID in the inventory signaling sent by the reader through the tag can predict the movement trajectory of the tag as 1-2-3.
  • the tag sends the inventory signaling through the transmitter with ID 3 at t3, it can predict t4
  • the time tag will send inventory signaling through the transmitter with ID 4, that is, it is predicted that the position of the tag will be under the coverage of the transmitter with ID 4 at time t4.
  • the target tag in addition to implementing steps 201 to 203 on the target tag, can also receive the third signaling sent by the target reader, and the third signaling is used to indicate the target tag.
  • the second signaling is sent, and the specific implementation will be described in the following method example.
  • FIG. 11a is a schematic diagram of an embodiment of the label positioning method provided by the present application.
  • the tag does not carry the identifier of the transmitter in the inventory signaling.
  • the target reader/writer sends an instruction to the target tag through a third signaling.
  • the third signaling is a proprietary signaling. command, which is used to instruct the target tag to send the identifier of the first transmitter to the target reader/writer.
  • FIG. 11b is a schematic diagram of an embodiment of the label positioning method provided by the present application.
  • the identifier enable bit of the transmitter carried in the inventory signaling by the reader when the identifier enable bit of the transmitter carried in the inventory signaling by the reader is turned off, the inventory signaling sent by the tag to the reader will not include the identifier of the transmitter. Therefore, the reader can enable the tag to send the identifier of the transmitter of the reader to the reader through the dedicated signaling after inventory, and the dedicated signaling is shown in Figure 11a.
  • the tag receives the dedicated signaling, the tag can reply to the dedicated signaling with response signaling, and the response signaling can also include the identifier of the first transmitter, and the response signaling is shown in Figure 11b.
  • the target tag receives the first signaling sent by the target reader/writer, and the first signaling includes the identity ID of the first transmitter.
  • the target tag sends the second signaling to the target reader/writer, and the second signaling includes the ID of the first transmitter.
  • the target reader can determine which transmitter the target tag is under the coverage of the first transmitter included in the signaling sent by the target tag, so as to more accurately determine the position of the tag and improve tag positioning. s efficiency.
  • the target tag in addition to steps 201 to 203 included in the embodiment shown in FIG. 5 above, can also report the fourth signaling to the target reader after confirming that the reporting conditions are met, This specific implementation will be described in detail in the following examples.
  • the target tag If the target tag confirms that the reporting conditions are met, the target tag sends a fourth signaling to the target reader/writer.
  • the reporting condition of the label may be obtained by the reader, and the reporting condition of the label may also be obtained by other methods, which are not specifically limited here.
  • the reporting condition may be the label switching transmitter, the reporting condition may also be that the label arrives at the preset reporting time, and the reporting condition may also be other conditions, which are not specifically limited here.
  • the target reader includes a first transmitter and a second transmitter, and the first transmitter and the second transmitter are not the same network device.
  • the target tag communicates with the target reader through the first transmitter.
  • the target tag moves, it is assumed that the target tag exceeds the coverage of the first transmitter and enters the coverage of the second transmitter. At this time, the target tag will switch the transmitter and communicate with the target reader through the second transmitter. .
  • the coverage areas of the first transmitter and the second transmitter overlap, and the target tag is switched from the first transmitter to the second transmitter.
  • the identifier of the transmitter included in the signaling sent by the target reader once again received by the target tag is the identifier of the second transmitter
  • the target tag confirms that the identifier of the received transmitter is switched from the identifier of the first transmitter to that of the first transmitter.
  • the identity of the second transmitter that is, the identity of the received transmitter, is changed.
  • the target tag confirms that the reporting condition is met, and the target tag can send the identifier of the second transmitter to the target reader through the fourth signaling.
  • the fourth signaling may be signaling (Select, Query, Reply, ACK, NAK, EPC, Queryrep, and/or Queryadjust, etc.) included in the inventory signaling, and the signaling included in the fourth signaling may also be It is other signaling than the inventory signaling, which is not specifically limited here.
  • the first transmitter and the second transmitter are the same network device, and after the target tag confirms that the preset reporting time is reached, the target tag sends the identifier of the second transmitter (the first transmitter's identifier) to the ID) and report it to the receiver of the reader.
  • the preset reporting time can be obtained by a technician by configuring the target tag itself as the target tag, and the preset reporting time can be sent by the receiver to the target tag through inventory signaling or other signaling.
  • the preset reporting time can also be obtained in other ways.
  • the reader can specify the target tag through the first signaling to report the identifier of the first transmitter in a specific signaling, which is not specifically limited here.
  • the first signaling may further include the reporting time of the identifier of the first transmitter.
  • the reporting time of the identifier of the first transmitter sent by the target reader to the target tag through the first signaling can specify that the target tag sends the identifier of the first transmitter to the target reader at a specific time, and the reporting time can specify that the target tag send the first transmitter to the target reader after a certain period of time
  • the inventory signaling Select includes a reporting time, and the reporting time indicates that the tag carries the identifier of the transmitter at the moment of sending the EPC.
  • the reader sends the Select carrying the reporting time to the tag, and the tag will carry the identifier of the transmitter when sending the EPC after receiving the Select.
  • the reporting time may also mean that the target tag sends the identifier of the first transmitter to the target reader after receiving the third signaling mentioned in the above embodiment, which is not specifically limited here.
  • the first signaling may further include the number of times of reporting the identity of the first transmitter.
  • the target reader may send the number of times of reporting the first transmitter identifier to the target tag through the first signaling.
  • the number of reporting times included in the first signaling indicates one reporting.
  • the reader can specify the target tag through the first signaling to report the identity of the first transmitter in a specific signaling. After the identification of the first transmitter is reported to the target reader in the specific signaling, other signaling except the specific signaling will no longer report the identification of the first transmitter to the target reader. It is assumed that the number of reporting times included in the first signaling indicates all reporting.
  • the reader may specify the target tag through the first signaling and report the identity of the first transmitter in all signaling sent to the reader.
  • the signaling mentioned in this embodiment may be signaling included in the inventory signaling, or may be other signaling than the inventory signaling, which is not specifically limited here.
  • the signaling before the target tag receives the first signaling may carry the identifier of the transmitter used last time, or may carry the invalid identifier, which is not specifically limited here.
  • the identifier of the first transmitter sent by the target tag to the reader can be included in any signaling, and the target reader can use multiple In this way, the signaling that carries the identity of the first transmitter is identified.
  • a flag bit may be added to the signaling sent by the target tag to the target reader. Assuming that the size of the flag bit is 1 bit, 0 and 1 are used to indicate whether the signaling carries the identifier of the first transmitter. If the flag bit included in the signaling is 1, it means that the signaling carries the identifier of the first transmitter. On the contrary, if the flag bit included in the signaling is 0, it means that the signaling does not carry the identity of the first transmitter.
  • the flag bit may be 0 to indicate that the identifier of the first transmitter is carried in the signaling, or the flag bit may be 1 to indicate that the identifier of the first transmitter is not carried in the signaling, which is not specifically limited here.
  • the size of the flag bit may be 1 bit, or may be 2 bits or other sizes, which are not specifically limited here.
  • Method 2 Identifying by the boot header
  • the first type of pilot header is used, and if the identifier of the first transmitter is not included in the signaling, the second type of pilot header is used.
  • This method requires the receiver to have the function of blindly detecting two types of guide heads at the same time, and the functions corresponding to different guide heads can be pre-configured.
  • the central processing unit can send the function corresponding to the pilot header to the receiver and the transmitter, and the transmitter can send the function of the pilot header to the tag through signaling in the form of broadcasting.
  • the signaling includes a specific flag bit, and the specific flag bit can be Used to indicate that the signaling is public signaling or proprietary signaling.
  • the identifier of the first sender may be sent to the target reader by means of plaintext transmission.
  • the identifier of the first sender is transmitted to the target reader by means of encrypted transmission.
  • the target tag can encrypt the identifier of the first transmitter and the RN16 by XOR and send it to the target reader, and the target tag can also encrypt and send the identifier of the first transmitter to the target reader by other methods. There are no restrictions.
  • the tag can scramble the signaling with a specific ID, and the reader can obtain the specific ID after descrambling the signaling. It is used to indicate that the identifier of the transmitter is not included in the signaling.
  • the specific ID may be preset inside the tag, and the specific ID may also be sent by the central control unit to the receiver and transmitter.
  • the transmitter sends the specific ID to the tag through signaling, the signaling includes a specific flag bit, and the specific flag bit is used to indicate that the signaling sent is a specific ID or the ID of the transmitter, which is not specifically limited here.
  • the tag can also send the ID of the first transmitter to the reader by means of implicit transmission.
  • the tag can scramble the signaling through the identifier of the transmitter, and the reader descrambles the signaling. Then the identifier of the transmitter sent by the label can be obtained.
  • the tag when the tag receives the Req-RN signaling sent by the transmitter, the tag scrambles the RN16 with the ID of the transmitter, and sends the scrambled signaling to the reader, and the reader can check whether it can descramble.
  • This signaling is used to confirm whether the identifier of the transmitter matches, and after descrambling the signaling, the ID of the transmitter can be obtained.
  • the RN16 between the reader and the tag will be updated at regular intervals.
  • the reader sends the Req_RN under the RFID protocol to the tag, and the tag receives the Req_RN and obtains a new RN16.
  • a time-varying parameter is introduced, and the tag can XOR the time-varying parameter, the original RN16 and the ID of the transmitter to generate an encryption result, and the tag sends the encryption result to the reader. Knowing the original RN16 and time-varying parameters, the reader can decrypt the encrypted result to obtain the ID of the transmitter by XORing the encrypted result again.
  • the time-varying parameter may be generated by the tag, and after generating the time-varying parameter, the tag sends the time-varying parameter to the reader through signaling.
  • the time-varying parameters can be generated by the transmitter. After the transmitter generates the time-varying parameters, the time-varying parameters are sent to the tag and the receiver respectively.
  • the time-varying parameters can also be generated in other ways. There are no restrictions.
  • the target reader/writer obtains the first configuration information through the first receiver.
  • the first configuration information may be used to indicate the location of the third transmitter and/or the deployment relationship among multiple third transmitters, and the first configuration information further includes the ID of the third transmitter.
  • the third transmitter refers to a transmitter in a subset of all transmitters in communication with the first receiver, and the third transmitter may include the first transmitter.
  • the first receiver can obtain the first configuration information through a network device such as a database or a server that stores a topology relationship, and the first receiver can also receive the first configuration information sent by one or more third transmitters.
  • a receiver may also acquire the first configuration information in other ways, which are not specifically limited here.
  • the target reader/writer may also send the second configuration information to the transmitter through the receiver.
  • the second configuration information is used to indicate the configuration required by the target tag to communicate with the target reader/writer. Assuming that the tag communicates with the reader through transmitter A, if the tag moves, after the reader predicts the movement trajectory of the tag, it can be inferred that the tag will communicate with the reader through transmitter B at the next moment.
  • the reader may send the second configuration information to the transmitter B, for example, the reader may add a mask (the second configuration information) to the Selcet signaling sent to the transmitter B, so as to speed up the inventory of the tag by the reader speed and improve inventory efficiency.
  • the second configuration information may further include other content, which is not specifically limited here.
  • the above examples provide different implementations of a label inventory method.
  • the following provides a label device 30, as shown in FIG. 12, the label device 30 is used to perform the steps performed by the target label in the above examples, the execution steps and The corresponding beneficial effects can be understood by referring to the above-mentioned corresponding examples, which will not be repeated here.
  • the labeling device 30 includes:
  • a receiving unit 301 configured to receive a first signaling sent by a target reader/writer, where the target reader/writer includes a first transmitter and a first receiver, and the first signaling includes an identifier of the first transmitter ;
  • the sending unit 302 is configured to send second signaling to the target reader/writer, where the second signaling includes the identifier of the first transmitter.
  • the first signaling includes inventory signaling
  • the inventory signaling includes selection signaling Select, query signaling Query, confirmation signaling ACK, unacknowledged signaling NAK and/or query type.
  • the second signaling includes inventory signaling
  • the inventory signaling includes reply signaling Reply and/or electronic product code EPC.
  • the receiving unit 301 is further configured to receive a third signaling sent by the target reader/writer, where the third signaling is used to instruct the target tag to send a second signaling to the target reader/writer.
  • the processing unit is also used to confirm that the reporting conditions are met
  • the sending unit 302 is further configured to send fourth signaling to the target reader/writer, where the fourth signaling includes the identifier of the second transmitter.
  • the first signaling includes a reporting time of the identifier of the first transmitter.
  • the first signaling includes the number of times of reporting the identity of the first transmitter.
  • the identifier of the first transmitter is transmitted in plain text, or the identifier of the first transmitter is transmitted in encryption.
  • the above examples provide different implementations of a tag device 30, and the following provides a reader 40, as shown in FIG. 13, the tag reader 40 is used to perform the steps performed by the target reader in the above examples , the execution steps and the corresponding beneficial effects can be understood with reference to the above-mentioned corresponding examples, which will not be repeated here.
  • the reader 40 includes:
  • a sending unit 401 configured to send a first signaling to a target tag, the target reader includes a first transmitter and a first receiver, and the first signaling includes an identifier of the first transmitter;
  • a receiving unit 402 configured to receive second signaling sent by the target tag, where the second signaling includes an identifier of the first transmitter;
  • the processing unit 403 is configured to predict the position of the target tag according to the identifier of the first transmitter.
  • the first signaling includes inventory signaling, and the inventory signaling includes selection signaling Select, query signaling Query, confirmation signaling ACK, unacknowledged signaling NAK, and/or query signaling Queryrep.
  • the second signaling includes inventory signaling, and the inventory signaling includes reply signaling Reply and/or electronic product code EPC.
  • the sending unit 401 is further configured to send third signaling to the target tag, where the third signaling is used to instruct the target tag to send the second signaling to the target reader/writer.
  • the reader/writer includes a third transmitter
  • the receiving unit 402 is further configured to obtain first configuration information through the first receiver, where the first configuration information is used to indicate the position of the third transmitter and/or the position of the third transmitter. deployment relationship.
  • the sending unit 401 further sends second configuration information to the transmitter through the receiver, where the second configuration information is used to indicate the configuration required for the communication between the target tag and the target reader/writer.
  • the network device may be a tag device, and the network device may also be a reader/writer, which is not limited here.
  • the network device 500 includes: a processor 502 , a communication interface 503 , and a memory 501 .
  • a bus 504 may be included.
  • the communication interface 503, the processor 502 and the memory 501 can be connected to each other through a bus 504;
  • the bus 504 can be a Peripheral Component Interconnect (PCI) bus or an extended industry standard architecture (EISA) bus etc.
  • PCI Peripheral Component Interconnect
  • EISA extended industry standard architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like.
  • the network device 500 may implement the function of the tag device in FIG. 12 , or the network device 500 may implement the function of the reader/writer in the example shown in FIG. 13 .
  • the processor 502 and the communication interface 503 can perform corresponding operations of the tag device or the reader/writer in the above method examples.
  • the memory 501 may be a volatile memory (volatile memory), such as random-access memory (RAM); or a non-volatile memory (non-volatile memory), such as a read-only memory (read-only memory).
  • volatile memory such as random-access memory (RAM); or a non-volatile memory (non-volatile memory), such as a read-only memory (read-only memory).
  • ROM read-only memory
  • flash memory flash memory
  • HDD hard disk drive
  • solid-state drive solid-state drive
  • the processor 502 is the control center of the controller, which can be a central processing unit (CPU), a specific integrated circuit (application specific integrated circuit, ASIC), or is configured to implement the examples provided in this application
  • One or more integrated circuits such as: one or more digital signal processors (digital signal processors, DSP), or, one or more field programmable gate arrays (field programmable gate array, FPGA).
  • the communication interface 503 is used to communicate with other network devices.
  • the processor 502 may perform the operations performed by the tag device in the example shown in FIG. 12 , or the operations performed by the reader/writer in the example shown in FIG. 13 , and details are not repeated here.
  • the disclosed system, apparatus and method can be implemented in other ways.
  • the apparatus examples described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or may be Integration into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of this example.
  • each functional unit in each example of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium.
  • the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, and the computer software products are stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the various examples of this application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, read-only memory), random access memory (RAM, random access memory), magnetic disk or optical disk and other media that can store program codes .

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Abstract

本申请公开了一种标签定位方法，本申请中，目标标签接收目标读写器发送的第一信令，第一信令包括第一发送机的身份标识ID。目标标签向目标读写器发送第二信令，第二信令中包括第一发送机的ID。进而，目标读写器可以根据目标标签发送的信令中包括的第一发送机的ID来确定目标标签处于哪一个发送机的覆盖范围之下，更加准确的确定标签的位置，提升了标签定位的效率。

Description

一种标签定位方法以及相关设备
本申请要求于2021年1月31日提交中国国家知识产权局、申请号为202110132083.X、发明名称为“一种标签定位方法以及相关设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，尤其涉及一种标签定位方法以及相关设备。
背景技术
射频识别(radio frequency identification，RFID)技术，是一种非接触式的自动识别技术。读写器(interrogator)通过向标签(tag)发送激励信号为标签进行充能，标签接收目标读写器发送的信令，并通过反射信号向目标读写器发送信令，通过这种方式目标读写器可以识别标签的ID，以及对标签进行读写等操作。
标签被广泛应用于定位场景中。标签接收到读写器发送的息里中包含的标识后，标签通过通信网络将该标识发送给服务器等定位设备。定位设备会根据预存的读写器的位置，将标签划入该读写器覆盖的范围内。
现有的通信过程中，读写器通过向标签发送RFID信令来实现标签定位。读写器与标签之间相互发送的协议信令中所包含的信息的内容较少，标签定位效率较低。
发明内容
本申请提供了一种标签定位方法，目标读写器可以根据目标标签发送的信令中包括的第一发送机的身份标识(identity，ID)来确定目标标签处于哪一个发送机的覆盖范围之下，更加准确的确定标签的位置，提升了标签定位的效率。
本申请第一方面提供了一种标签定位方法，目标标签接收目标读写器发送的第一信令，所述目标读写器包括第一发送机与第一接收机，所述第一信令包括所述第一发送机的标识；所述目标标签向所述目标读写器发送第二信令，所述第二信令中包括所述第一发送机的标识。
本申请中，目标标签接收目标读写器发送的第一信令，第一信令包括第一发送机的身份标识ID。目标标签向目标读写器发送第二信令，第二信令中包括第一发送机的ID。进而，目标读写器可以根据目标标签发送的信令中包括的第一发送机的ID来确定目标标签处于哪一个发送机的覆盖范围之下，更加准确的确定标签的位置，提升了标签定位的效率。
在第一方面的一种可能的实现方式中，所述第一信令包括盘存信令，所述盘存信令包括选择信令(Select)、询问信令(Query)、确认信令(acknowledge，ACK)、未确认信令(negative acknowledge，NAK)和/或询问类信令(Queryrep)。
该种可能的实现方式中，目标读写器采用收发分离架构，目标读写器被拆分后至少包括第一发送接与第一接收机，可选的，目标读写器还可以包括第二发送机等更多的发送机，具体此处不做限定。目标读写器向目标标签发送第一信令，可选的，该第一信令可以是盘存信令，盘存信令是指盘存进程中的信令。具体的，该盘存信令可以是选择信令Select、询问信 令Query、确认信令ACK、未确认信令NAK和/或询问类信令Queryrep，具体此处不做限定。多种盘存信令中包括第一发送机的标识，目标标签可以将该第一发送机的标识发送至目标阅读器，第一发送机的标识可以用于对目标标签的定位，提升了目标阅读器对于标签定位的准确性。
在第一方面的一种可能的实现方式中，所述第二信令包括盘存信令，所述盘存信令包括回复信令Reply和/或电子产品编码(electronic product code，EPC)。
该种可能的实现方式中，目标标签可以将该第一发送机的标识通过Reply信令和/或电子产品编码发送至目标阅读器，目标阅读器接收到第一发送机的标识后，可以用该标识对目标标签定位，提升了目标阅读器对于标签定位的准确性。
在第一方面的一种可能的实现方式中，所述方法还包括：所述目标标签接收所述目标读写器发送的第三信令，所述第三信令用于指示所述目标标签向所述目标读写器发送第二信令。
该种可能的实现方式中，标签在盘存信令中不携带发送机的标识，当盘存进程结束后，目标读写器通过第三信令向目标标签发送指令，第三信令是专有信令，用于指示目标标签向目标读写器发送第一发送机的标识。示例性的，读写器在盘存信令中携带的发送机标识使能位关闭时，标签向读写器发送的盘存信令中将不会包括发送机的标识。因此，读写器可以通过盘存后的专用信令使能标签发送读写器发送机标识给读写器，该种可能的实现方式提供了一种目标标签向目标阅读器发送第一发送机的标识的实现方式，提升了方案的灵活性。
在第一方面的一种可能的实现方式中，所述目标读写器包括第二发送机，所述方法还包括：所述目标标签确认符合上报条件；所述目标标签向所述目标读写器发送第四信令，所述第四信令包括第二发送机的标识。
若目标标签确认符合上报条件，目标标签向目标读写器发送第四信令。
该种可能的实现方式中，可选的，标签的上报条件可以是由阅读器发送得到，标签的上报条件还可以是通过其他方式得到，具体此处不做限定。可选的，上报条件可以是标签切换发送机，上报条件还可以是标签到达预设上报时间，上报条件还可以是其他条件，具体此处不做限定。
(1)标签切换发送机
本实施例中，目标阅读器包括第一发送机与第二发送机，第一发送机与第二发送机不是同一台网络设备。目标标签通过第一发送机与目标阅读器通信。当目标标签移动之后，假设目标标签超出了第一发送机的覆盖范围，进入了第二发送机的覆盖范围，此时目标标签将切换发送机，并通过第二发送机与目标阅读器进行通信。或者，第一发射机与第二发射机的覆盖范围重合，目标标签由第一发射机切换至第二发射机。此时，目标标签再次接收到目标阅读器发送的信令中包括的发送机的标识便是第二发送机的标识，目标标签确认接收到的发送机的标识由第一发送机的标识切换为第二发送机的标识，即接收到的发送机的标识发生了改变。此时目标标签确认符合上报条件，目标标签可以通过第四信令向目标阅读器发送第二发送机的标识。可选的，第四信令可以是盘存信令中包括的信令(Select、Query、Reply、ACK、NAK、EPC、Queryrep和/或Queryadjust等)，第四信令中包括的信令也可以是盘存信令之外的其他信令，具体此处不做限定。
(2)标签到达预设上报时间
本申请中，第一发送机与第二发送机是同一台网络设备，目标标签确认到达预设的上报时间后，目标标签通过第四信令将第二发送机的标识(第一发送机的标识)上报至阅读器的接收机。可选的，该预设的上报时间可以由技术人员通过目标标签自身为目标标签配置得到，该预设的上报时间可以由收机通过盘存信令或其他信令向目标标签发送得到。该预设的上报时间还可以通过其他方式得到，阅读器可以通过第一信令指定目标标签在某个特定的信令中上报第一发送机的标识，具体此处不做限定。
本申请中，可选的，第一信令中还可以包括第一发送机的标识的上报时间。
可选的，目标阅读器通过第一信令向目标标签发送的第一发送机的标识的上报时间。该上报时间可以指定该目标标签在某个具体的时刻向目标阅读器发送第一发送机的标识，该上报时间可以是指定该目标标签延后某个时间段向目标阅读器发送第一发送机的标识，例如，假设盘存信令Select中包括上报时间，该上报时间指示标签在发送EPC的时刻携带发送机的标识。阅读器将携带有该上报时间的Select发送至标签，标签接收到该Select后将在发送EPC时携带发送机的标识。该上报时间还可以是指该目标标签接收到上述实施例中提及的第三信令之后向目标阅读器发送第一发送机的标识，具体此处不做限定。
该种可能的实现方式中，目标阅读器可以通过多种方式配置目标标签在不同的时间上报标识，提升了方案的灵活性。
在第一方面的一种可能的实现方式中，所述第一信令包括所述第一发送机的标识的上报次数。
(1)上报一次或全部上报
示例性的，假设第一信令中包括的上报次数指示上报一次。阅读器可以通过第一信令指定目标标签在某个特定的信令中上报第一发送机的标识。该特定的信令中向目标阅读器上报第一发送机的标识后，除该特定信令外的其他信令将不再向目标阅读器上报第一发送机的标识。假设第一信令中包括的上报次数指示全部上报。阅读器可以通过第一信令指定目标标签在所有向阅读器发送的信令中上报第一发送机的标识。本实施例中提及的信令可以是盘存信令中包括的信令，也可以是盘存信令之外的其他信令，具体此处不做限定。本申请中，目标标签接收到第一信令之前的信令中，可以携带上一次所使用的发送机的标识，也可以携带无效标识，具体此处不做限定。
(2)随机上报
示例性的，本申请中，假设第一信令中包括的上报次数指示随机上报，目标标签向阅读器发送的第一发送机的标识可以包括在任何一个信令内，目标阅读器可以通过多种方式识别携带有第一发送机标识的信令。该种可能的方式中，目标阅读器可以通过多种方式配置目标标签通过不同的方式上报标识，提升了方案的可实现性。
在第一方面的一种可能的实现方式中，所述第一发送机的标识采用明文传输，或，所述第一发送机的标识采用加密传输。
该种可能的实现方式中，可选的，第一发送机的标识可以采用明文传输的方式发送至目标阅读器。可选的，第一发送机的标识采用加密传输的方式传输至目标阅读器。例如，目标标签可以将第一发送机的标识与RN16通过异或的方式加密之后发送至目标阅读器，目标标签还可以通过其他方式将第一发送机的标识加密发送至目标阅读器，具体次处不做限定。该种 可能的实现方式提供了两种具体的发送形式，提升了方案的可实现性。
本申请第二方面提供了一种标签定位方法，目标读写器向目标标签发送第一信令，所述目标读写器包括第一发送机与第一接收机，所述第一信令包括所述第一发送机的标识；所述目标读写器接收所述目标标签发送的第二信令，所述第二信令中包括所述第一发送机的标识；所述目标读写器根据所述第一发送机的标识预测所述目标标签的位置。
本申请中，目标读写器向目标标签发送第一信令，第一信令包括第一发送机的身份标识ID。目标读写器接收所述目标标签发送的第二信令，第二信令中包括第一发送机的ID。进而，目标读写器可以根据目标标签发送的信令中包括的第一发送机的ID来确定目标标签处于哪一个发送机的覆盖范围之下，更加准确的确定标签的位置，提升了标签定位的效率。
在第二方面的一种可能的实现方式中，所述第一信令包括盘存信令，所述盘存信令包括选择信令Select、询问信令Query、确认信令ACK、未确认信令NAK和/或询问类信令Queryrep。
该种可能的实现方式中，目标读写器采用收发分离架构，目标读写器被拆分后至少包括第一发送接与第一接收机，可选的，目标读写器还可以包括第二发送机等更多的发送机，具体此处不做限定。目标读写器向目标标签发送第一信令，可选的，该第一信令可以是盘存信令，盘存信令是指盘存进程中的信令。具体的，该盘存信令可以是选择信令Select、询问信令Query、确认信令ACK、未确认信令NAK和/或询问类信令Queryrep，具体此处不做限定。多种盘存信令中包括第一发送机的标识，目标标签可以将该第一发送机的标识发送至目标阅读器，第一发送机的标识可以用于对目标标签的定位，提升了目标阅读器对于标签定位的准确性。
在第二方面的一种可能的实现方式中，所述第二信令包括盘存信令，所述盘存信令包括回复信令Reply和/或电子产品编码EPC。
该种可能的实现方式中，目标标签可以将该第一发送机的标识通过Reply信令和/或电子产品编码EPC发送至目标阅读器，目标阅读器接收到第一发送机的标识后，可以用该标识对目标标签定位，提升了目标阅读器对于标签定位的准确性。
在第二方面的一种可能的实现方式中，所述方法还包括：所述目标读写器向所述目标标签发送第三信令，所述第三信令用于指示所述目标标签向所述目标读写器发送第二信令。
该种可能的实现方式中，标签在盘存信令中不携带发送机的标识，当盘存进程结束后，目标读写器通过第三信令向目标标签发送指令，第三信令是专有信令，用于指示目标标签向目标读写器发送第一发送机的标识。示例性的，读写器在盘存信令中携带的发送机标识使能位关闭时，标签向读写器发送的盘存信令中将不会包括发送机的标识。因此，读写器可以通过盘存后的专用信令使能标签发送读写器发送机标识给读写器，该种可能的实现方式提供了一种目标标签向目标阅读器发送第一发送机的标识的实现方式，提升了方案的灵活性。
在第二方面的一种可能的实现方式中，所述目标读写器包括第三发送机，所述方法还包括：所述目标读写器通过所述第一接收机获取第一配置信息，所述第一配置信息用于指示所述第三发送机的位置和/或多个第三发送机的之间的部署关系。
该种可能的实现方式中，该第一配置信息可以用于指示所述第三发送机的位置和/或多个第三发送机的之间的部署关系。第三发送机指与第一接收机通信的所有发送机的子集中的发 送机。可选的，第一接收机可以通过存储有拓扑关系的数据库或服务器等网络设备获取第一配置信息，第一接收机也可以接收一个或多个第三发送机发送的第一配置信息，第一接收机还可以通过其他的方式获取第一配置信息，具体此处不做限定。该种可能的实现方式中，目标阅读器根据可以根据第一配置信息得知各个发射机的位置，进而通过发射机的位置以及发射机的标识来确定标签的位置，提升了方案的可实现性。
在第二方面的一种可能的实现方式中，所述方法还包括：所述目标读写器通过所述接收机向所述发送机发送第二配置信息，所述第二配置信息用于指示所述目标标签与目标读写器通信所需要的配置。
该种可能的实现方式中，该第二配置信息用于指示目标标签与目标读写器通信所需要的配置。假设标签通过发送机A与阅读器通信，若标签发生移动，阅读器预测到标签的移动轨迹后，可以推断出下一时刻标签会通过发送机B与阅读器通信。阅读器可以向发送机B发送第二配置信息，例如，阅读器可以将向发射机B发送的Selcet信令中增加mask(第二配置信息)，以便加速阅读器对于标签的盘存速度，提升盘存效率。
从以上技术方案可以看出，本申请实施例具有以下优点：
本申请中，目标标签接收目标读写器发送的第一信令，第一信令包括第一发送机的身份标识ID。目标标签向目标读写器发送第二信令，第二信令中包括第一发送机的ID。进而，目标读写器可以根据目标标签发送的信令中包括的第一发送机的ID来确定目标标签处于哪一个发送机的覆盖范围之下，更加准确的确定标签的位置，提升了标签定位的效率。
附图说明
图1为本申请提供的标签和读写器的一实施例示意图；
图2为本申请提供的盘存进程的一实施例示意图；
图3为本申请提供的标签的盘存进程的另一实施例示意图；
图4为本申请提供的标签定位系统的一实施例示意图；
图5为本申请提供的一种标签定位方法的一实施例示意图；
图6为本申请提供的标签定位方法的另一实施例示意图；
图7为本申请提供的标签定位方法的另一实施例示意图；
图8为本申请提供的标签定位方法的另一实施例示意图；
图9为本申请提供的标签定位方法的另一实施例示意图；
图10为本申请提供的标签定位方法的另一实施例示意图；
图11a为本申请提供的标签定位方法的另一实施例示意图；
图11b为本申请提供的标签定位方法的另一实施例示意图；
图12为本申请提供的标签设备的一结构示意图；
图13为本申请提供的读写器的一结构示意图；
图14为本申请提供的网络设备的一结构示意图。
具体实施方式
下面结合附图，对本申请提供的示例进行描述，显然，所描述的示例仅仅是本申请一部 分的示例，而不是全部的示例。本领域普通技术人员可知，随着技术的发展和新场景的出现，本申请提供的技术方案对于类似的技术问题，同样适用。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的示例能够以除了在这里图示或描述的内容以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
图1为本申请提供的标签和读写器的一实施例示意图。
请参阅图1，如图1所示，RFID技术，是一种非接触式的自动识别技术。读写器通过向低成本的标签发送激励信号为标签进行充能，标签接收读写器发送的信令，并通过反射信号向读写器发送信令，通过这种方式读写器可以识别标签的ID，读写器可以对标签进行读写操作，读写器还可以对标签执行其他操作，具体此处不做限定。
标签被广泛应用于定位场景中。标签接收到读写器发送的息里中包含的标识后，标签通过通信网络将该标识发送给服务器等定位设备。定位设备会根据预存的读写器的位置，将标签划入该读写器覆盖的范围内。
现有的通信过程中，读写器通过向标签发送RFID信令来实现标签定位。在一个接收机对应多个发送机的情况下，接收机无法确认标签处于哪个发送机的覆盖范围下，通过信号质量来获取标签的定位信息，定位精度不够，定位效率低。
为了解决上述方案中存在的问题，本申请提出了一种标签定位方法，本申请中，目标标签接收目标读写器发送的第一信令，第一信令包括第一发送机的标识。目标标签向目标读写器发送第二信令，第二信令中包括第一发送机的标识。进而，目标读写器可以根据目标标签发送的第二信令中包括的第一发送机的标识来确定目标标签处于哪一个发送机的覆盖范围之下，更加准确地确定了标签的位置，提升了标签定位的效率。
图2为本申请提供的盘存进程的一实施例示意图。
请参阅图2，下面对图2中标签的盘存进程进行简单介绍。
读写器向标签发送选择信令(Select)，Select用于选择标签的子集，标签的子集中包括多个标签。此外，Select还可以修改某一个节(session)的盘存标志位。
读写器向标签发送询问信令(Query)，Query用于从多个session中选择一个session，并选择该session中盘存标志位相匹配的标签。进而，初始化被Select选中的子集中的标签的盘存进程，被Selcet信令选中的子集中的标签各自选择一个随机数初始化计数器(counter)。
标签向读写器送回复信令(Reply)，Reply中包括的RN16用于指示标签的临时身份标识。当标签接收到询问信令后，若标签确认counter＝0，则选择一个16位随机数作为RN16，将该RN16反馈至读写器。若读写器检测到标签反馈RN16时，说明盘存进程正常进行，读写器执行下一步动作。
读写器向标签发送确认信令ACK，ACK用于指示读写器成功接收标签发送的RN16，ACK中包括了标签之前反馈的16位随机数，用于标签检验该ACK是否正确。
标签确认ACK中包括的16位随机数与标签发送的RN16相同，则标签向读写器发送电子产品编码，EPC用于指示标签的真实ID。
读写器确认标签发送的EPC有效，则读写器向标签发送询问类信令(QueryRep或QueryAdjust)。接收到询问类信令的所有标签的counter-1，或根据QueryAdjust重选随机数初始化counter，盘存进程结束。
读写器确认标签发送的EPC无效，则读写器向标签发送未确认信令(negative acknowledge，NAK)。
图3为本申请提供的标签的盘存进程的另一实施例示意图。
请参阅图3，下面对图3中的盘存进程进行简单介绍。
本申请中，读写器向标签发送Select和Query，以及标签向读写器发送Reply的作用与上述图2所示的实施例中的作用相类似，具体此处不做赘述。
当多个标签均向读写器发送RN16时，若读写器确认多个标签发送的RN16之间产生了冲突，则读写器不会向标签发送ACK，直接发送QueryRep，跳过这些冲突的标签，直接进行后续盘存进程。此外，若是读写器未检测到标签反馈RN16时，也会直接进行后续盘存进程(如发送QueryRep)。
下面对上述图2、图3所示的实施例中的时间间隔进行简单介绍。
本申请中，T1为读写器发送信令结束到标签开始发送信令之间的时间间隔，标签在进行处理时应满足该时序要求。T4为读写器发送一条信令结束到下一条信令开始之间的时间间隔(中间标签无反馈信令)。T3为读写器执行盘存进程中，无标签反馈时，额外要等待的时延。T2为标签发送信令结束到读写器开始发送信令之间的时间间隔。
图4为本申请提供的标签定位系统的一实施例示意图。
请参阅图4，如图4所示，本申请提供的标签定位系统可以报括读写器101、标签102和标签103。在分离式架构下，本申请提供的标签定位系统中包括的读写器101可以拆分成接收机(receiver)104、发送机(helper)105和发送机106。
本申请中，目标读写器的空口与目标标签的空口之间的链路称为前向链路，标签到读写器的链路称为反向链路。
本申请中，发送机可以在前向链路上向标签发送激励信号，接收机可以在反向链路上接收标签发送的反射信号。此外，接收机生成RFID信令后，通过前传下行链路将RFID信令发送至发送机，由发送机在前向链路上转发至标签。
本申请中，可选的，发送机与接收机之间的前传链路可以采用第五代新空口(5th-Generation New Radio，5G NR)技术传输信令，发送机与接收机之间可以通过第五代策行链路(5G sidelink)技术传输信令，发送机与接收机之间还可以通过其他技术传输信令，具体此处不做限定。
本申请中，按照能源的供给方式，可以将标签分为无源标签，有源标签，以及半有源标签。有源标签(Active tag)可以称为有源电子标签，又可以称为又称主动标签，使用卡内电池为微型芯片提供部分或全部能量，但不会为标签与读写器之间传送数据提供能量，优点是识别距离较长(可达十几米)，缺点是寿命有限(3至l0年)，且价格较高。一个有源读写器能够监测100米范围内的所有的有源标签。
本申请中，半无源标签(Semi-passive tag)内的电池供电仅对标签内要求供电维持数据的电路或者标签芯片工作所需电压的辅助支持，本身耗电很少的标签电路供电。标签未进人工作状态前，一直处于休眠状态，相当于无源标签，标签内部电池能量消耗很少，因而电池可维持几年，甚至长达10年有效；当标签进入读写器的读出区域时，受到读写器发出的射频信号激励，进人工作状态时，标签与读写器之间信息交换的能量支持以读写器供应的射频能量为主(反射调制方式)，标签内部电池的作用主要在于弥补标签所处位置的射频场强不足，标签内部电池的能量并不转换为射频能量。
无源标签不含电池，没有内装电池，在读写器的读出范围之外时，电子标签处于无源状态，在读写器的读出范围之内时，电子标签从读写器发出的射频能量中提取其工作所需的电源。无源电子标签一般均采用反射调制的方式向读写器传送信息。无源标签的实用范围大约在10厘米至几米左右。重量和体积较小，使用寿命长。但它的发射距离受限制，而且要求读写器的发射功率大，应答器工作电路的功耗小。
可选的，本申请提供的标签定位系统中包括的标签102、标签103可以是有源标签，标签102、标签103可以是无源标签，标签102、标签103还可以是半有源标签，具体此处不做限定。
本申请中，RFID系统还有其他的分类方式：根据调制方式的不同还可分为主动式和被动式、半主动式；根据存储信息是否被改写分为只读式标签和可读写标签。根据封装形式不同可分为信用卡标签、线形标签、纸状标签、玻璃管标签、圆形标签及特殊用途的异形标签等。上述不同分类方式的标签，在盘存进程上没有差异。
基于图4所描述的标签定位系统，对本申请提供的标签定位方法进行描述。
图5为本申请提供的一种标签定位方法的一实施例示意图。
请参阅图5，本申请提供的一种标签定位方法的一个实施例包括步骤201至步骤203。
201、目标标签接收目标读写器发送的第一信令，相应的，目标读写器向目标标签发送第一信令。
本申请中，目标读写器包括第一发送机与第一接收机，第一信令包括第一发送机的身份标识ID。
本申请中，目标读写器采用收发分离架构，目标读写器被拆分后至少包括第一发送接与第一接收机，可选的，目标读写器还可以包括第二发送机等更多的发送机，具体此处不做限定。目标读写器向目标标签发送第一信令，可选的，该第一信令可以是盘存信令，盘存信令是指盘存进程中的信令。具体的，该盘存信令可以是选择信令Select、询问信令Query、确认信令ACK、未确认信令NAK和/或询问类信令Queryrep，具体此处不做限定。
图6为本申请提供的一种标签定位方法的另一实施例示意图。
本申请中，第一发送机的标识可以通过ID的形式来体现，示例性的，如图6所示，由中心控制单元(Interrogator Receiver)分配第一发送机的ID。将第一发送机的ID携带于在Qurey信令中。如图6所示的Query中包括第一发送机的标识(Transmitter Id)字段,该Transmitter Id字段即用来指示第一发送机的ID。可选的，Query中还可以包括一个Tag是否发送给Receiver的使能位，目标读写器可以通过配置该使能位中的内容来决定目标标签是否在下一条信令中向目标读写器发送该第一发送机的ID。
方式一：目标读写器向目标标签中发送的部分盘存信令携带第一发送机的标识。
本申请中，目标读写器盘存目标标签时，读写器首先会向标签发送Select与Query来开展盘存进程。可选的，可以在Select和/或Query中携带第一发送机的标识，以便在盘存进程开始之时标签可以知晓第一发送机的ID，并在向目标读写器回复的RN16中携带该第一发送机的ID。可选的，也可以在ACK、NAK、Queryrep和/或Queryadjust中携带第一发送机的标识，具体此处不做限定。
方式二：目标读写器向目标标签中发送的全部盘存信令中都携带第一发送机的标识。
本申请中，可选的，目标读写器向目标标签中发送的Select、Query、ACK、NAK、Queryrep和/或Queryadjust中都携带有第一发送机的标识。
本申请中，目标读写器选择的第一发送机发生了改变，则第一发送机的标识也随之改变。目标标签通过第二信令向目标读写器上报改变后的第一发送机的标识，目标读写器即可得知目标标签的位置发生了变化，可以更加精确地锁定目标标签的位置。可选的，标签可以处于多个发送机的覆盖范围下，目标读写器切换发送机后，则第一发送机的标识也随之改变，目标标签可以通过多个发送机的覆盖范围缩小目标标签的位置可能存在的范围，实现了对于目标标签更加精准的定位。
202、目标标签向目标读写器发送第二信令，相应的，目标读写器接收目标标签发送的第二信令。
本申请中，第二信令中包括第一发送机的ID。
可选的，第二信令可以是盘存进程中的回复信令Reply，第二信令可以是盘存进程中的电子产品编码EPC，第二信令还可以是其他信令，具体此处不做限定。
图7为本申请提供的标签定位方法的一实施例示意图。
请参阅图7，示例性的，假设标签回复目标读写器的Reply中包括的第一发送机标识(Transmitter Id)字段包括该发送机的标识，Reply中包括发送机标识的实现方式如图7所示。
203、目标读写器根据第一发送机的ID预测目标标签的位置。
本申请中，在不同的情况下，目标读写器可以根据目标标签上报的第一发送机的ID通过不同的方式来预测目标标签的位置，下面的示例将进行详细的说明。
图8为本申请提供的标签定位方法的另一实施例示意图。
(1)标签处于静止状态
如图8所示，若标签处于静止状态，在不同的盘存周期中，读写器盘存标签的过程中，同一个标签可能通过不同的发送机发送盘存信令。假设标签在t1时刻通过ID为1的发送机发送了盘存信令，t2时刻通过ID为2的发送机发送了盘存信令，t3时刻通过ID为3的发送机发送了盘存信令，t4时刻通过ID为4的发送机发送了盘存信令。
接收器可以通过发送机的ID和接收到标签在不同时刻发送的盘存信令的接收的信号强度指示(received signal strength indication，RSSI)来预测标签的位置。在无源标签通信中，接收器也可以根据标签返回的盘存信令来估计该盘存信令的RSSI。由于标签与读写器传输信令的过程中，反向链路传输损耗以及标签能量损失等参数基本不会发生改变，不同时刻下接收器接收到的RSSI可由如下公式计算得出：
接收器的RSSI＝发送机的功率(Txpower)-前向链路传输损耗-标签能量损失-反向链路传输损耗。
由上述公式可知，不同发送机下前向链路传输损耗的能量损耗差值，可以应用到定位技术中，进而通过前向链路传输损耗可以确定标签位置所在的范围。
图9为本申请提供的标签定位方法的一实施例示意图。
示例性的，可以通过发送机的参考信号接收功率(reference signal received power，RSRP)来划分该发送机的覆盖范围。
如图9所示，示例性的，发送机1、2、3、4均匀分布，认为每次RSRP测量有偏差，分别为正负1.5dB。最终标签位置会被1确定到上图四个焦点的围城的区域。集中在～434平米的区间，平均定位精度～20m。在读写器不知道发送器的标识的情况下，假设区域只有发送器1,2,3,4，那么覆盖区域面积大约为：180*180，精度～180m。定位精度提升80％。
(2)标签处于移动状态
图10为本申请提供的标签定位方法的另一实施例示意图。
如图10所示，若标签处于移动状态，t1，t2，t3，t4分别代表不同的盘存时刻。1、2、3、4分别代表ID不同的发送机。读写器通过标签发送的盘存信令中的发送机ID可以预测标签的移动轨迹为1-2-3，当标签在t3时刻通过ID为3的发送机发送该盘存信令时，可以预测t4时刻标签将会通过ID为4的发送机发送盘存信令，即预测标签的位置在t4时刻将会位于ID为4的发送机的覆盖下。
本申请中，本申请提供的标签定位方法中，目标标签除了实施步骤201至步骤203之外，目标标签还可以接收目标读写器发送的第三信令，第三信令用于指示目标标签发送第二信令，该种具体的实现方式将在如下方法示例中进行说明。
图11a为本申请提供的标签定位方法的一实施例示意图。
一种可能的实现方式中，标签在盘存信令中不携带发送机的标识，当盘存进程结束后，目标读写器通过第三信令向目标标签发送指令，第三信令是专有信令，用于指示目标标签向目标读写器发送第一发送机的标识。
图11b为本申请提供的标签定位方法的一实施例示意图。
示例性的，读写器在盘存信令中携带的发送机标识使能位关闭时，标签向读写器发送的盘存信令中将不会包括发送机的标识。因此，读写器可以通过盘存后的专用信令使能标签发送读写器发送机标识给读写器，该专用信令如图11a所示。标签接收到该专用信令时，标签可以针对该专用信令回复响应信令，该响应信令中也可以包括第一发送机的标识，该响应信令如图11b所示。
本申请中，目标标签接收目标读写器发送的第一信令，第一信令包括第一发送机的身份标识ID。目标标签向目标读写器发送第二信令，第二信令中包括第一发送机的ID。进而，目标读写器可以根据目标标签发送的信令中包括的第一发送机的ID来确定目标标签处于哪一个发送机的覆盖范围之下，更加准确的确定标签的位置，提升了标签定位的效率。
本申请提供的标签定位方法中，除上述图5所示的实施例中包括的步骤201至步骤203之外，目标标签还可以确认符合上报条件后，向目标读写器上报第四信令，该种具体的实现方式将在下面的示例中进行详细说明。
若目标标签确认符合上报条件，目标标签向目标读写器发送第四信令。
本申请中，可选的，标签的上报条件可以是由阅读器发送得到，标签的上报条件还可以是通过其他方式得到，具体此处不做限定。可选的，上报条件可以是标签切换发送机，上报条件还可以是标签到达预设上报时间，上报条件还可以是其他条件，具体此处不做限定。
(1)标签切换发送机
本实施例中，目标阅读器包括第一发送机与第二发送机，第一发送机与第二发送机不是同一台网络设备。目标标签通过第一发送机与目标阅读器通信。当目标标签移动之后，假设目标标签超出了第一发送机的覆盖范围，进入了第二发送机的覆盖范围，此时目标标签将切换发送机，并通过第二发送机与目标阅读器进行通信。或者，第一发射机与第二发射机的覆盖范围重合，目标标签由第一发射机切换至第二发射机。此时，目标标签再次接收到目标阅读器发送的信令中包括的发送机的标识便是第二发送机的标识，目标标签确认接收到的发送机的标识由第一发送机的标识切换为第二发送机的标识，即接收到的发送机的标识发生了改变。此时目标标签确认符合上报条件，目标标签可以通过第四信令向目标阅读器发送第二发送机的标识。可选的，第四信令可以是盘存信令中包括的信令(Select、Query、Reply、ACK、NAK、EPC、Queryrep和/或Queryadjust等)，第四信令中包括的信令也可以是盘存信令之外的其他信令，具体此处不做限定。
(2)标签到达预设上报时间
本申请中，第一发送机与第二发送机是同一台网络设备，目标标签确认到达预设的上报时间后，目标标签通过第四信令将第二发送机的标识(第一发送机的标识)上报至阅读器的接收机。可选的，该预设的上报时间可以由技术人员通过目标标签自身为目标标签配置得到，该预设的上报时间可以由收机通过盘存信令或其他信令向目标标签发送得到。该预设的上报时间还可以通过其他方式得到，阅读器可以通过第一信令指定目标标签在某个特定的信令中上报第一发送机的标识，具体此处不做限定。
本申请中，可选的，第一信令中还可以包括第一发送机的标识的上报时间。
可选的，目标阅读器通过第一信令向目标标签发送的第一发送机的标识的上报时间。该上报时间可以指定该目标标签在某个具体的时刻向目标阅读器发送第一发送机的标识，该上报时间可以是指定该目标标签延后某个时间段向目标阅读器发送第一发送机的标识，例如，假设盘存信令Select中包括上报时间，该上报时间指示标签在发送EPC的时刻携带发送机的标识。阅读器将携带有该上报时间的Select发送至标签，标签接收到该Select后将在发送EPC时携带发送机的标识。该上报时间还可以是指该目标标签接收到上述实施例中提及的第三信令之后向目标阅读器发送第一发送机的标识，具体此处不做限定。
本申请中，可选的，第一信令中还可以包括第一发送机的标识的上报次数。
本申请中，目标阅读器可以通过第一信令向目标标签发送上报第一发送机标识的次数。
(1)上报一次或全部上报
示例性的，假设第一信令中包括的上报次数指示上报一次。阅读器可以通过第一信令指定目标标签在某个特定的信令中上报第一发送机的标识。该特定的信令中向目标阅读器上报第一发送机的标识后，除该特定信令外的其他信令将不再向目标阅读器上报第一发送机的标识。假设第一信令中包括的上报次数指示全部上报。阅读器可以通过第一信令指定目标标签 在所有向阅读器发送的信令中上报第一发送机的标识。本实施例中提及的信令可以是盘存信令中包括的信令，也可以是盘存信令之外的其他信令，具体此处不做限定。本申请中，目标标签接收到第一信令之前的信令中，可以携带上一次所使用的发送机的标识，也可以携带无效标识，具体此处不做限定。
(2)随机上报
示例性的，本申请中，假设第一信令中包括的上报次数指示随机上报，目标标签向阅读器发送的第一发送机的标识可以包括在任何一个信令内，目标阅读器可以通过多种方式识别携带有第一发送机标识的信令。
方式1：通过标志位识别
示例性的，目标标签向目标阅读器发送的信令中可以增加标志位，假设该标志位的大小为1bit，通过0、1来指示该信令是否携带第一发送机的标识。若信令中包括的该标志位为1，则代表该信令中携带有第一发送机的标识。反之，若信令中包括的该标志位为0，则代表该信令中没有携带第一发送机的标识。可选的，也可以是标志位为0指示该信令中携带第一发送机的标识，可以是标志位为1指示信令中不携带第一发送机的标识，具体此处不做限定。本申请中，该标志位的大小可以是1bit，也可以是2bit或其他大小，具体此处不做限定。
方式2：通过引导头识别
示例性的，信令中包括第一发送机的标识，则用第一类引导头，信令中不包括第一发送机的标识，则用第二类引导头。该种方式要求接收机具备同时盲检两类引导头的功能，不同的引导头对应的功能可以预先配置。中心处理单元可以将引导头对应的功能发送至接收机与发送机，发送机可以通过广播的形式通过信令将引导头的功能发送至标签，该信令中包括特定标志位，特定标志位可以用于指示该信令是公共信令或专有信令。
本申请中，可选的，第一发送机的标识可以采用明文传输的方式发送至目标阅读器。可选的，第一发送机的标识采用加密传输的方式传输至目标阅读器。例如，目标标签可以将第一发送机的标识与RN16通过异或的方式加密之后发送至目标阅读器，目标标签还可以通过其他方式将第一发送机的标识加密发送至目标阅读器，具体次处不做限定。
方式3：通过特定ID识别
本申请中，若标签向阅读器发送的信令中不包括发送机的标识，则标签可以通过特定ID加扰该信令，阅读器解扰该信令后即可得到特定ID，该特定ID用于指示该信令中不包括发送机的标识。
本申请中，可选的，特定ID可以是标签内部预置的，特定ID也可以是中心控制单元发送至接收机和发送机的。发送机通过信令将特定ID发送给标签，该信令中包括特定标志位，特定标志位用于指示该信令发送的是特定的ID或发射机的ID，具体此处不做限定。
在加密传输的过程中，标签还可以通过隐式传输的方式将第一发送机的ID发送至阅读器。
可选的，一种可能的实现方式中，若标签向阅读器发送的信令中包括发送机的标识，则标签可以通过该发送机的标识加扰该信令，阅读器解扰该信令后即可得到标签发送的发送机的标识。
示例性的，当标签接收到发送机发送的Req-RN信令时，标签采用发送机的ID对RN16加扰，将加扰后的信令发送至阅读器，阅读器可以通过是否能够解扰该信令来确认发送机的标 识是否匹配，解扰该信令后可以获得发送机的ID。
可选的，一种可能的实现方式中，为了增加安全性，阅读器与标签之间的RN16每隔一段时间都会进行一次更新。阅读器向标签发送RFID协议下的Req_RN，标签接收到Req_RN会获取新的RN16。本申请中，可选的，引入一个时变参数，标签可以将时变参数、原RN16和发送机的ID异或之后生成加密结果，标签将该加密结果发送至阅读器。阅读器已知原RN16与时变参数，便可以对加密结果通过再次异或的方式解密得到发送机的ID。
本申请中，时变参数的产生方式有多种。可选的，时变参数可以由标签产生，标签产生时变参数后通过信令将该时变参数发送至阅读器。可选的，时变参数可以由发送机产生，发送机产生时变参数后将该时变参数分别发送至标签与接收机，可选的，时变参数还可以有其他的产生方式，具体此处不做限定。
示例性的，假设发射机的标识有16位，A＝{A0，A1…A16}，A用来表示发射机的标识，B＝{B0,B1…B16},B用来表示原RN16，T＝{T0，T1，…T16}，T用来表示时变参数。标签将A、B和T异或后，得到的结果C通过信令发送至阅读器。阅读器接收到该信令后，由于阅读器已知B和T，阅读器可以将C与B和T异或以得到A。
本申请中，可选的，目标读写器通过第一接收机获取第一配置信息。
该第一配置信息可以用于指示所述第三发送机的位置和/或多个第三发送机的之间的部署关系，该第一配置信息中还包括第三发送机的ID。第三发送机指与第一接收机通信的所有发送机的子集中的发送机，第三发送机可以包括第一发送机。可选的，第一接收机可以通过存储有拓扑关系的数据库或服务器等网络设备获取第一配置信息，第一接收机也可以接收一个或多个第三发送机发送的第一配置信息，第一接收机还可以通过其他的方式获取第一配置信息，具体此处不做限定。
本申请中，可选的，目标读写器还可以通过接收机向所述发送机发送第二配置信息。
该第二配置信息用于指示目标标签与目标读写器通信所需要的配置。假设标签通过发送机A与阅读器通信，若标签发生移动，阅读器预测到标签的移动轨迹后，可以推断出下一时刻标签会通过发送机B与阅读器通信。阅读器可以向发送机B发送第二配置信息，例如，阅读器可以将向发射机B发送的Selcet信令中增加掩码(mask)(第二配置信息)，以便加速阅读器对于标签的盘存速度，提升盘存效率。可选的，第二配置信息中还可包括其他内容，具体此处不做限定。
上述示例提供了一种标签盘存方法的不同的实施方式，下面提供了一种标签设备30，如图12所示，该标签设备30用于执行上述示例中目标标签执行的步骤，该执行步骤以及相应的有益效果具体请参照上述相应的示例进行理解，此处不再赘述，该标签设备30包括：
接收单元301，用于接收目标读写器发送的第一信令，所述目标读写器包括第一发送机与第一接收机，所述第一信令包括所述第一发送机的标识；
发送单元302，用于向所述目标读写器发送第二信令，所述第二信令中包括所述第一发送机的标识。
一种可能的实现方式中，所述第一信令包括盘存信令，所述盘存信令包括选择信令Select、询问信令Query、确认信令ACK、未确认信令NAK和/或询问类信令Queryrep。
一种可能的实现方式中，所述第二信令包括盘存信令，所述盘存信令包括回复信令 Reply和/或电子产品编码EPC。
一种可能的实现方式中，
所述接收单元301，还用于接收所述目标读写器发送的第三信令，所述第三信令用于指示所述目标标签向所述目标读写器发送第二信令。
一种可能的实现方式中，
处理单元，还用于确认符合上报条件；
所述发送单元302，还用于向所述目标读写器发送第四信令，所述第四信令包括第二发送机的标识。
一种可能的实现方式中，所述第一信令包括所述第一发送机的标识的上报时间。
一种可能的实现方式中，所述第一信令包括所述第一发送机的标识的上报次数。
一种可能的实现方式中，所述第一发送机的标识采用明文传输，或，所述第一发送机的标识采用加密传输。
需要说明的是，上述标签设备30的各模块之间的信息交互、执行过程等内容，由于与本申请方法示例基于同一构思，其执行步骤与上述方法步骤的详细内容一致，可参见上述方法示例处的描述。
上述示例提供了一种标签设备30的不同的实施方式，下面提供了一种读写器40，如图13所示，该标读写器40用于执行上述示例中目标读写器执行的步骤，该执行步骤以及相应的有益效果具体请参照上述相应的示例进行理解，此处不再赘述，该读写器40包括：
发送单元401，用于向目标标签发送第一信令，所述目标读写器包括第一发送机与第一接收机，所述第一信令包括所述第一发送机的标识；
接收单元402，用于接收所述目标标签发送的第二信令，所述第二信令中包括所述第一发送机的标识；
处理单元403，用于根据所述第一发送机的标识预测所述目标标签的位置。
一种可能的实现方式中，
所述第一信令包括盘存信令，所述盘存信令包括选择信令Select、询问信令Query、确认信令ACK、未确认信令NAK和/或询问类信令Queryrep。
一种可能的实现方式中，
所述第二信令包括盘存信令，所述盘存信令包括回复信令Reply和/或电子产品编码EPC。
一种可能的实现方式中，
所述发送单元401，还用于向所述目标标签发送第三信令，所述第三信令用于指示所述目标标签向所述目标读写器发送第二信令。
一种可能的实现方式中，所述读写器包括第三发送机，
所述接收单元402，还用于通过所述第一接收机获取第一配置信息，所述第一配置信息用于指示所述第三发送机的位置和/或多个第三发送机的之间的部署关系。
一种可能的实现方式中，
所述发送单元401，还通过所述接收机向所述发送机发送第二配置信息，所述第二配置信息用于指示所述目标标签与所述目标读写器通信所需要的配置。
需要说明的是，上述读写器40的各模块之间的信息交互、执行过程等内容，由于与本申 请方法示例基于同一构思，其执行步骤与上述方法步骤的详细内容一致，可参见上述方法示例处的描述。
参阅图14所示，为本申请提供一种网络设备的结构示意图，该网络设备可以是标签设备，该网络设备也可以是读写器，具体点此处不做限定。该网络设备500包括：处理器502、通信接口503、存储器501。可选的，可以包括总线504。其中，通信接口503、处理器502以及存储器501可以通过总线504相互连接；总线504可以是外围部件互连标准(Peripheral Component Interconnect,PCI)总线或扩充工业标准体系结构(extended industry standard architecture,EISA)总线等。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图14中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。该网络设备500可以实现图12中标签设备的功能，或，该网络设备500可以实现图13所示的示例中的读写器的功能。处理器502和通信接口503可以执行上述方法示例中标签设备或读写器相应的操作。
下面结合图14对网络设备的各个构成部件进行具体的介绍：
其中，存储器501可以是易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)；或者非易失性存储器(non-volatile memory)，例如只读存储器(read-only memory，ROM)，快闪存储器(flash memory)，硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)；或者上述种类的存储器的组合，用于存储可实现本申请方法的程序代码、配置文件或其他内容。
处理器502是控制器的控制中心，可以是一个中央处理器(central processing unit，CPU)，也可以是特定集成电路(application specific integrated circuit，ASIC)，或者是被配置成实施本申请提供的示例的一个或多个集成电路，例如：一个或多个数字信号处理器(digital signal processor，DSP)，或，一个或者多个现场可编程门阵列(field programmable gate array，FPGA)。
通信接口503用于与其他网络设备进行通信。
该处理器502可以执行前述图12所示示例中标签设备执行的操作，或，图13所示示例中读写器所执行的操作，具体此处不再赘述。
需要说明的是，上述网络设备500的各模块之间的信息交互、执行过程等内容，由于与本申请方法示例基于同一构思，其执行步骤与上述方法步骤的详细内容一致，可参见上述方法示例处的描述。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统，装置和单元的具体工作过程，可以参考前述示例中的对应过程，在此不再赘述。
在本申请所提供的几个示例中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置示例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部 件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本示例的目的。
另外，在本申请各个示例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。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或者该技术方案的全部或部分可以以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中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个示例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，read-only memory)、随机存取存储器(RAM，random access memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述的具体实施方式，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，不同的示例可以进行组合，以上所述仅为本发明的具体实施方式而已，并不用于限定本发明的保护范围，凡在本发明的精神和原则之内，所做的任何组合、修改、等同替换、改进等，均应包含在本发明的保护范围之内。以上所述，以上示例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述示例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各示例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各示例技术方案的范围。

Claims (33)

  1. 一种标签定位方法，其特征在于，包括：
    目标标签接收目标读写器发送的第一信令，所述目标读写器包括第一发送机与第一接收机，所述第一信令包括所述第一发送机的标识；
    所述目标标签向所述目标读写器发送第二信令，所述第二信令中包括所述第一发送机的标识。
  2. 根据权利要求1所述的标签定位方法，其特征在于，所述第一信令包括盘存信令，所述盘存信令包括选择信令Select、询问信令Query、确认信令ACK、未确认信令NAK和/或询问类信令Queryrep。
  3. 根据权利要求1或2所述的标签定位方法，其特征在于，所述第二信令包括盘存信令，所述盘存信令包括回复信令Reply和/或电子产品编码EPC。
  4. 根据权利要求1或2所述的标签定位方法，其特征在于，所述方法还包括：
    所述目标标签接收所述目标读写器发送的第三信令，所述第三信令用于指示所述目标标签向所述目标读写器发送所述第二信令。
  5. 根据权利要求1至4所述的标签定位方法，其特征在于，所述目标读写器包括第二发送机，所述方法还包括：
    所述目标标签确认符合上报条件；
    所述目标标签向所述目标读写器发送第四信令，所述第四信令包括第二发送机的标识。
  6. 根据权利要求1至5所述的标签定位方法，其特征在于，所述第一信令包括所述第一发送机的标识的上报时间。
  7. 根据权利要求1至6所述的标签定位方法，其特征在于，所述第一信令包括所述第一发送机的标识的上报次数。
  8. 根据权利要求1至7所述的标签定位方法，其特征在于，所述第一发送机的标识采用明文传输，或，所述第一发送机的标识采用加密传输。
  9. 一种标签定位方法，其特征在于，包括：
    目标读写器向目标标签发送第一信令，所述目标读写器包括第一发送机与第一接收机，所述第一信令包括所述第一发送机的标识；
    所述目标读写器接收所述目标标签发送的第二信令，所述第二信令中包括所述第一发送机的标识；
    所述目标读写器根据所述第一发送机的标识预测所述目标标签的位置。
  10. 根据权利要求9所述的标签定位方法，其特征在于，所述第一信令包括盘存信令，所述盘存信令包括选择信令Select、询问信令Query、确认信令ACK、未确认信令NAK和/或询问类信令Queryrep。
  11. 根据权利要求9或10所述的标签定位方法，其特征在于，所述第二信令包括盘存信令，所述盘存信令包括回复信令Reply和/或电子产品编码EPC。
  12. 根据权利要求9或10所述的标签定位方法，其特征在于，所述方法还包括：
    所述目标读写器向所述目标标签发送第三信令，所述第三信令用于指示所述目标标签向所述目标读写器发送所述第二信令。
  13. 根据权利要求9至12所述的标签定位方法，其特征在于，所述目标读写器包括第三发送机，所述方法还包括：
    所述目标读写器通过所述第一接收机获取第一配置信息，所述第一配置信息用于指示所述第三发送机的位置和/或多个第三发送机的之间的部署关系。
  14. 根据权利要求9至13所述的标签定位方法，其特征在于，所述方法还包括：
    所述目标读写器通过所述接收机向所述发送机发送第二配置信息，所述第二配置信息用于指示所述目标标签与所述目标读写器通信所需要的配置。
  15. 一种标签设备，其特征在于，包括：
    接收单元，用于接收目标读写器发送的第一信令，所述目标读写器包括第一发送机与第一接收机，所述第一信令包括所述第一发送机的标识；
    发送单元，用于向所述目标读写器发送第二信令，所述第二信令中包括所述第一发送机的标识。
  16. 根据权利要求15所述的标签设备，其特征在于，所述第一信令包括盘存信令，所述盘存信令包括选择信令Select、询问信令Query、确认信令ACK、未确认信令NAK和/或询问类信令Queryrep。
  17. 根据权利要求15或16所述的标签设备，其特征在于，所述第二信令包括盘存信令，所述盘存信令包括回复信令Reply和/或电子产品编码EPC。
  18. 根据权利要求15或16所述的标签设备，其特征在于，
    所述接收单元，还用于接收所述目标读写器发送的第三信令，所述第三信令用于指示所述目标标签向所述目标读写器发送第二信令。
  19. 根据权利要求15至18所述的标签设备，其特征在于，所述目标读写器包括第二发送机；
    处理单元，还用于确认符合上报条件；
    所述发送单元，还用于向所述目标读写器发送第四信令，所述第四信令包括第二发送机的标识。
  20. 根据权利要求15至19所述的标签设备，其特征在于，所述第一信令包括所述第一发送机的标识的上报时间。
  21. 根据权利要求15至20所述的标签设备，其特征在于，所述第一信令包括所述第一发送机的标识的上报次数。
  22. 根据权利要求15至21所述的标签设备，其特征在于，所述第一发送机的标识采用明文传输，或，所述第一发送机的标识采用加密传输。
  23. 一种读写器，其特征在于，包括：
    发送单元，用于向目标标签发送第一信令，所述目标读写器包括第一发送机与第一接收机，所述第一信令包括所述第一发送机的标识；
    接收单元，用于接收所述目标标签发送的第二信令，所述第二信令中包括所述第一发送机的标识；
    处理单元，用于根据所述第一发送机的标识预测所述目标标签的位置。
  24. 根据权利要求23所述的读写器，其特征在于，所述第一信令包括盘存信令，所述盘 存信令包括选择信令Select、询问信令Query、确认信令ACK、未确认信令NAK和/或询问类信令Queryrep。
  25. 根据权利要求23或24所述的读写器，其特征在于，所述第二信令包括盘存信令，所述盘存信令包括回复信令Reply和/或电子产品编码EPC。
  26. 根据权利要求23或24所述的读写器，其特征在于，
    所述发送单元，还用于向所述目标标签发送第三信令，所述第三信令用于指示所述目标标签向所述目标读写器发送所述第二信令。
  27. 根据权利要求23至26所述的读写器，其特征在于，所述读写器包括第三发送机，
    所述接收单元，还用于通过所述第一接收机获取第一配置信息，所述第一配置信息用于指示所述第三发送机的位置和/或多个第三发送机的之间的部署关系。
  28. 根据权利要求23至27所述的读写器，其特征在于，
    所述发送单元，还通过所述接收机向所述发送机发送第二配置信息，所述第二配置信息用于指示所述目标标签与所述目标读写器通信所需要的配置。
  29. 一种标签设备，其特征在于，包括：
    处理器、存储器和通信接口；
    所述处理器与所述存储器、所述通信接口相连；
    所述通信接口用于：
    接收第一信令；
    发送第二信令；
    接收第三信令；
    所述处理器用于读取所述存储器中存储的指令后，使得所述标签设备执行如权利要求1至8中任一项所述的方法。
  30. 一种读写器，其特征在于，包括：
    处理器、存储器和通信接口；
    所述处理器与所述存储器、所述通信接口相连；
    所述通信接口用于：
    发送第一信令；
    接收第二信令；
    发送第三信令；
    所述处理器用于读取所述存储器中存储的指令后，使得所述读写器执行如权利要求9至14中任一项所述的方法。
  31. 一种芯片，其特征在于，包括处理器和通信接口，所述处理器用于读取指令以执行如权利要求1至8中任意一项所述的方法，或，执行如权利要求9至14中任意一项所述的方法。
  32. 一种计算机存储介质，其特征在于，所述计算机存储介质中存储有指令，所述指令在计算机上执行时，使得所述计算机执行如权利要求1至8中任一项所述的方法，或，使得所述计算机执行如权利要求9至14中任一项所述的方法。
  33. 一种网络系统，包括权利要求1至8中任意一项所述的标签定位方法中包括的目标 标签以及包括权利要求9至14中任意一项所述的标签定位方法中包括的目标读写器。
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090307529A1 (en) * 2006-05-10 2009-12-10 Samsung Sds Co., Ltd. System for Automatically Attaching RFID Tag Label and Method Thereof
CN106485291A (zh) * 2015-08-24 2017-03-08 瑞章科技有限公司 射频识别系统、标签和读写器，及纠错方法
CN108487923A (zh) * 2018-02-13 2018-09-04 北京新能正源智能装备有限公司 用于锚杆钻机的定位系统
CN109827561A (zh) * 2018-08-03 2019-05-31 上海诣星智能科技有限公司 一种室内定位系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1462408A (zh) * 2001-05-04 2003-12-17 皇家菲利浦电子有限公司 带有包含站识别信号生成装置的通信站的转发器系统
US7576693B2 (en) * 2006-03-24 2009-08-18 Free Alliance Sdn Bhd Position determination by directional broadcast
US9734368B1 (en) * 2016-06-17 2017-08-15 Amazon Technologies, Inc. Determining a location based on radio frequency identification (RFID) read events
EP3333755B1 (en) * 2016-12-12 2019-10-30 EM Microelectronic-Marin SA Method for providing identification and access with respect to a radio-frequency tag
CN208724215U (zh) * 2018-09-20 2019-04-09 广州众志物联网科技有限公司 监测系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090307529A1 (en) * 2006-05-10 2009-12-10 Samsung Sds Co., Ltd. System for Automatically Attaching RFID Tag Label and Method Thereof
CN106485291A (zh) * 2015-08-24 2017-03-08 瑞章科技有限公司 射频识别系统、标签和读写器，及纠错方法
CN108487923A (zh) * 2018-02-13 2018-09-04 北京新能正源智能装备有限公司 用于锚杆钻机的定位系统
CN109827561A (zh) * 2018-08-03 2019-05-31 上海诣星智能科技有限公司 一种室内定位系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4276685A4

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