WO2021197218A1 - Dispositif électronique, procédé de positionnement et support de stockage non transitoire à lecture informatique - Google Patents

Dispositif électronique, procédé de positionnement et support de stockage non transitoire à lecture informatique Download PDF

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Publication number
WO2021197218A1
WO2021197218A1 PCT/CN2021/083191 CN2021083191W WO2021197218A1 WO 2021197218 A1 WO2021197218 A1 WO 2021197218A1 CN 2021083191 W CN2021083191 W CN 2021083191W WO 2021197218 A1 WO2021197218 A1 WO 2021197218A1
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WO
WIPO (PCT)
Prior art keywords
tag
electronic device
positioning
beacon
devices
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Application number
PCT/CN2021/083191
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English (en)
Chinese (zh)
Inventor
盛彬
吴志坤
孙晨
Original Assignee
索尼集团公司
盛彬
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 索尼集团公司, 盛彬 filed Critical 索尼集团公司
Priority to CN202180023947.2A priority Critical patent/CN115349096A/zh
Publication of WO2021197218A1 publication Critical patent/WO2021197218A1/fr

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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
    • G01S13/46—Indirect determination of position data
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/20—Instruments for performing navigational calculations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/20—Instruments for performing navigational calculations
    • G01C21/206—Instruments for performing navigational calculations specially adapted for indoor navigation
    • 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
    • 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
    • G01S13/46—Indirect determination of position data
    • G01S2013/462—Indirect determination of position data using multipath signals
    • 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
    • G01S13/46—Indirect determination of position data
    • G01S2013/466—Indirect determination of position data by Trilateration, i.e. two antennas or two sensors determine separately the distance to a target, whereby with the knowledge of the baseline length, i.e. the distance between the antennas or sensors, the position data of the target is determined

Definitions

  • This application relates to the field of wireless communication technology, and more specifically, to an electronic device for positioning based on environmental backscatter communication, a method for positioning, and a non-transitory computer-readable storage medium.
  • the existing positioning methods include a multi-point positioning (Multilateration) method and a cooperative positioning (Cooperative Location) method.
  • Multi-point positioning means that the receiving end measures the signals sent from multiple sending ends (with known positions) and determines the position of the receiving end according to a geometric method.
  • Cooperative positioning is mostly used in wireless sensor networks, which uses the distance and exchanged information between multiple sensors to improve positioning accuracy.
  • the positioning of the user equipment in the wireless communication system is generally realized by multi-point positioning, that is, the user equipment as the receiving end measures the signals sent from multiple base stations as the transmitting end, and determines the user equipment's position according to the geometric method.
  • the fourth generation of mobile communication (4G) system supports a variety of cellular-based positioning technologies, such as Observed Time Difference of Arrival (OTDOA) based on arrival time difference positioning method, based on the arrival of measured signals Angle (Angle of Arrival, AOA) and Time Advance (TimeAdvance, TA) positioning methods, etc. These positioning methods all assume that there is a line of sight (LOS) between the base station and the user equipment.
  • OTDOA Observed Time Difference of Arrival
  • AOA Angle
  • TA Time Advance
  • the purpose of at least one aspect of the present disclosure is to provide an electronic device, a method for positioning, and a non-transitory computer-readable storage medium, which enables an electronic device such as a user equipment to be indoors and a base station. It can also provide accurate positioning of electronic equipment when there is no direct view of the environment.
  • an electronic device including a processing circuit configured to: send address codes of a plurality of beacon tag devices to sequentially activate the beacon tag devices near the electronic device Obtain label configuration information from each activated beacon label device, and obtain the address code of the positioning label device in the area where the beacon label device is located according to the label configuration information; send the obtained address code of each positioning label device, To activate the corresponding positioning tag device; obtain the reflected reference signal obtained by reflecting the radio frequency reference signal of each activated positioning tag device, and use the reflected reference signal to locate the electronic device.
  • an electronic device which includes a processing circuit configured to: when receiving an address code of the electronic device from a user device, make the electronic device Enter the active state from the dormant state; and provide tag configuration information to the user equipment, so that the user equipment obtains the address code of the positioning tag device in the area where the electronic device is located according to the tag configuration information.
  • an electronic device which includes a processing circuit configured to: when receiving an address code of the electronic device from a user device, make the electronic device Enter the active state from the dormant state; and reflect the received radio frequency reference signal for the user equipment to perform positioning based on the reflected reference signal.
  • a method for positioning comprising: sending address codes of a plurality of beacon tag devices to sequentially activate the beacon tag devices near the electronic device; Activate the beacon tag device to obtain the tag configuration information, and obtain the address code of the positioning tag device in the area where the beacon tag device is located according to the tag configuration information; send the obtained address code of each positioning tag device to activate the corresponding Positioning tag device; Obtain the reflected reference signal obtained by reflecting the radio frequency reference signal of each activated positioning tag device, and use the reflected reference signal to locate the electronic device.
  • a method for positioning comprising: when receiving an address code of an electronic device from a user equipment, causing the electronic device to enter an active state from a dormant state And sending tag configuration information to the user equipment, so that the user equipment obtains the address code of the positioning tag device in the area where the electronic device is located according to the tag configuration information.
  • a method for positioning comprising: when receiving an address code of an electronic device from a user equipment, causing the electronic device to enter an active state from a dormant state And reflecting the received radio frequency reference signal for the user equipment to perform positioning based on the reflected reference signal.
  • a non-transitory computer-readable storage medium storing executable instructions.
  • the processor executes the above electronic device or is used for positioning. The various functions of the method.
  • Fig. 1 is a schematic diagram showing an existing Wi-Fi-based positioning method in an indoor environment
  • FIG. 2 is a block diagram showing a configuration example of an electronic device on the user equipment side according to an embodiment of the present disclosure
  • Fig. 3 is a schematic diagram showing an example application scenario of an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram showing an example address code sent according to an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram showing a setting example of beacon tag devices in multiple areas according to an embodiment of the present disclosure
  • 6A is a table showing examples of beacon tag address codes, tag configuration information, and location tag address codes according to an embodiment of the present disclosure
  • FIG. 6B is a table showing another example of a beacon tag address code and tag configuration information according to an embodiment of the present disclosure
  • FIG. 7 is a schematic diagram for explaining an example positioning process according to an embodiment of the present disclosure.
  • FIG. 8 is a block diagram showing a configuration example of a control unit in an electronic device on the user equipment side according to an embodiment of the present disclosure
  • FIG. 9 is a schematic diagram for explaining the environmental reflection channel estimation performed by the tag information acquiring unit in the control unit shown in FIG. 8;
  • FIG. 10 is a schematic diagram for explaining the tag reflection channel estimation performed by the tag information acquiring unit in the control unit shown in FIG. 8;
  • FIG. 11 is a schematic diagram showing an example of time shift and transmission sequence in the backscattering process of multiple positioning tag devices according to an embodiment of the present disclosure
  • FIG. 12 is a schematic diagram showing an example of frequency shift during backscattering of multiple positioning tag devices according to an embodiment of the present disclosure.
  • FIG. 13 is a block diagram showing one configuration example of an electronic device that can be used as a beacon tag device according to an embodiment of the present disclosure
  • FIG. 14 is a block diagram showing a configuration example of an electronic device that can be used as a positioning tag device according to an embodiment of the present disclosure
  • 15 is a schematic diagram showing an example of an information exchange process according to an embodiment of the present disclosure.
  • FIG. 16 is a flowchart showing a process example of a method for positioning on a user equipment side according to an embodiment of the present disclosure
  • FIG. 17 is a flowchart showing a process example of a method for positioning on the side of a beacon tag device according to an embodiment of the present disclosure
  • FIG. 18 is a flowchart showing an example of a process of a method for positioning on the side of a positioning tag device according to an embodiment of the present disclosure
  • FIG. 19 is a block diagram showing an example of a schematic configuration of a smart phone to which the technology of the present disclosure can be applied;
  • FIG. 20 is a block diagram showing an example of a schematic configuration of a car navigation device to which the technology of the present disclosure can be applied.
  • Example embodiments are provided so that this disclosure will be thorough and will fully convey its scope to those skilled in the art. Numerous specific details such as examples of specific components, devices, and methods are described to provide a detailed understanding of the embodiments of the present disclosure. It will be obvious to those skilled in the art that specific details do not need to be used, the example embodiments can be implemented in many different forms, and none of them should be construed as limiting the scope of the present disclosure. In some example embodiments, well-known processes, well-known structures, and well-known technologies are not described in detail.
  • the user equipment measures signals sent from multiple base stations and determines the location of the user equipment according to a geometric method
  • the user equipment when the user equipment is in a propagation environment with no direct line of sight between its base station, for example, when the user equipment When indoors or in a tunnel, because the signal transmission is blocked by obstacles such as walls, the positioning accuracy is greatly reduced.
  • Figure 1 schematically shows an existing Wi-Fi-based positioning method in an indoor environment.
  • the user equipment UE enters the area covered by the LAN router AP, it can receive the Wi-Fi signal sent by the AP. Since the location of the AP is known, the UE can calculate the distance d between itself and the AP by measuring the arrival time of the Wi-Fi signal sent by the AP, and perform positioning accordingly.
  • the positioning result of the UE is a circular area with the AP as the center and d as the radius. Such positioning accuracy is insufficient in many cases. Therefore, it is desirable to be able to provide an accurate positioning method suitable for a propagation environment (such as an indoor scene) where there is no direct line of sight between the user equipment and the base station.
  • the present disclosure proposes an electronic device on the user equipment side, an electronic device that can be used as a beacon tag device, an electronic device that can be used as a positioning tag device, a method for positioning, and a non-volatile computer readable for such scenarios.
  • the storage medium enables accurate positioning of the electronic device when the electronic device such as the user equipment is in an environment where there is no direct line of sight between it and the base station.
  • the electronic device on the user equipment side may be implemented as various user equipment such as mobile terminals such as smart phones, tablet personal computers (PCs), notebook PCs, portable game terminals, portable/dongle type mobile routers, and Digital camera) or in-vehicle terminal (such as car navigation equipment).
  • the aforementioned user equipment may also be implemented as a terminal (also referred to as a machine type communication (MTC) terminal) that performs machine-to-machine (M2M) communication.
  • the user equipment may include a wireless communication module (such as an integrated circuit module including a single chip) installed on each of the above-mentioned terminals, and the like.
  • the electronic equipment that can be used as a beacon tag device and the electronic equipment that can be used as a positioning tag device according to the present disclosure may be implemented as a tag device such as a passive radio frequency identification (RFID) tag (Tag).
  • RFID radio frequency identification
  • the tag device is usually in a dormant state and does not emit a signal; it only backscatters the radio frequency (RF) signal from the signal source (also sometimes referred to as reflection in this article) to the reader after it wakes up or is activated. ).
  • RF radio frequency
  • the tag device changes the backscattered radio frequency signal according to the information to be transmitted by, for example, changing its antenna impedance, thereby realizing the modulation of the reflected radio frequency signal.
  • the reader can demodulate the reflected radio frequency signal it receives to obtain the information sent by the passive tag.
  • the reader and the signal source can be integrated in one device or implemented separately. Since the circuit of the tag device is simple and does not transmit a signal itself, it has the advantages of low power consumption and low cost.
  • FIG. 2 is a block diagram showing one configuration example of an electronic device on the user equipment side according to an embodiment of the present disclosure.
  • the electronic device 200 may include a transceiver 210, a control unit 220 and an optional storage unit 230.
  • each unit of the electronic device 200 may be included in the processing circuit.
  • the electronic device 200 may include one processing circuit or multiple processing circuits.
  • the processing circuit may include various discrete functional units to perform various different functions and/or operations. It should be noted that these functional units may be physical entities or logical entities, and units with different titles may be implemented by the same physical entity.
  • the transceiver 210 of the electronic device 200 may sequentially transmit the address codes of a plurality of beacon tag devices to activate the beacon tag device near the electronic device 200. Subsequently, the control unit 220 may obtain the tag configuration information through demodulation processing or the like according to the signal received by the transceiver 210 from the activation beacon tag device.
  • the electronic device 200 can be used as a signal source to transmit a predetermined radio frequency reference signal through the transceiver 210 (or by another signal source), and the transceiver 210 can receive the reflection of the activated beacon tag device and modulate it with the tag configuration information. The reflected signal derived from the RF reference signal.
  • the control unit 220 can implement the function of the reader together with the transceiver 210, that is, obtain the tag configuration information from the received reflected signal from the activated beacon tag device through demodulation processing or the like.
  • the tag configuration information obtained by the control unit 220 from activating the beacon tag device may be associated with the address code of the positioning tag device in the area where the beacon tag device is located, or directly include these address codes.
  • the tag configuration information obtained by the control unit 220 from activating the beacon tag device may also be associated with the location information of the positioning tag device in the area where the beacon tag device is located, or directly include such location information.
  • the control unit 220 may control the transceiver 210 to send the obtained tag configuration information to the base station, and obtain the information from the base station.
  • the address code (and optional location information) of the locating label device associated with the label configuration information.
  • the control unit 220 obtains the address code and the like contained in the tag configuration information when it obtains the tag configuration information.
  • the transceiver 210 may send the address code of each positioning tag device obtained by the control unit 220 to activate the corresponding positioning tag device.
  • the transceiver 210 (or other appropriate device) of the electronic device 200 can be used as a signal source to send a predetermined radio frequency reference signal, and the transceiver 210 can receive a reflection reference obtained by activating the positioning tag device to reflect the radio frequency reference signal. Signal.
  • the control unit 220 can use these reflected reference signals to position the electronic device 200.
  • control unit 220 may use the information of the radio frequency reference signal it knows in advance to calculate the correlation function between the radio frequency reference signal sent by the electronic device 200 and the received reflected reference signal, and calculate the radio frequency reference by determining the peak value of the correlation function.
  • the round-trip time of the signal (or the arrival time of the reflected reference signal) is used to calculate the distance between the activated positioning tag device and the electronic device 200.
  • the control unit 220 may determine the position of the electronic device 200 based on the position information of a plurality of activated positioning tag devices obtained by it and the calculated distance between each activated positioning tag device and the electronic device. Due to the low cost of locating tag devices such as passive tags, multiple locating tag devices can be installed in one room, so that the electronic device 200 can use reflected reference signals from multiple locating tag devices to achieve precise positioning, for example, through a multi-point positioning method. .
  • the electronic device 200 receives the reflection signal carrying the tag configuration information from the activated beacon tag device and the reflection reference from the activated location tag device.
  • Signal and other processing only involves very low power consumption (such as hundreds of nW; the power consumption involved in Wi-Fi signal positioning in the prior art may be on the order of several W), which is beneficial to realize positioning with low power consumption .
  • the electronic device of the embodiment of the present disclosure reduces the location to be sent by first activating the nearby beacon tag device, and then obtaining the tag configuration information from the activated beacon tag device to obtain the address code of the nearby location tag device.
  • the number of address codes of the label reduces the processing load and helps to speed up the positioning speed.
  • the electronic device For an electronic device, it cannot know in advance the specific information of the location tag of the environment it enters, that is, which location tags specifically exist in the indoor environment. Therefore, if only the location tag device is installed in the environment without the beacon tag device, the electronic device needs to send the address codes of all location tags that may be nearby (for example, the address codes of all location tags in the entire building), And in this way, those locating tag devices located near the electronic equipment are activated.
  • the electronic device needs to send the address codes of 600 location tag devices to activate nearby location tag devices.
  • the electronic device since the beacon tag device is provided in addition to the location tag device in the environment, the electronic device only needs to send the address codes of all the beacon tag devices that may be nearby (for example, , The address codes of all beacon tag devices in the entire building) to activate nearby beacon tag devices. In this way, the electronic device can obtain the tag configuration information from the activation beacon tag device to obtain the address code of the nearby location tag device, and only send the obtained address code of the nearby location tag.
  • the electronic device 200 needs to send the address codes of 200 beacon tag devices to activate the beacon tag device in the room where it is located, and obtain tag configuration information from the activated beacon tag device to obtain the room where the beacon tag device is located.
  • the address codes of the 3 locating label devices that is, the address codes of the nearby locating label devices.
  • the electronic device 200 only needs to send the acquired three address codes. It can be seen that the number of address codes that electronic devices need to send is reduced from 600 to 203, which greatly reduces the processing load and helps speed up positioning.
  • one electronic device 200 has been described above. Now consider the case where there are multiple electronic devices. When there are multiple electronic devices in the environment, it is preferable that these electronic devices are processed in a time-division manner. That is, when one of the electronic devices performs positioning, the other electronic devices remain silent to avoid interference with each other.
  • multiple electronic devices such as user equipment may activate the beacon tag device near each electronic device in turn according to the scheduling of the base station, and perform subsequent processing accordingly.
  • multiple electronic devices can each work in Device to Device (D2D) mode, and activate the beacons near each electronic device in turn through distributed scheduling Labeling device.
  • D2D Device to Device
  • multiple nearby electronic devices can use Mode 2 in the D2D standard to autonomously select wireless resources for communication through congestion control mechanisms. After the communication is established, each electronic device determines the sequence of positioning operations through distributed scheduling (Distributed scheduling).
  • the electronic equipment according to the embodiments of the present disclosure can realize high-precision positioning due to the positioning based on the interaction with multiple tag devices, and the interaction with the beacon tag device greatly reduces the address of the positioning tag device that needs to be sent.
  • the number of codes further reduces the processing load and enables faster positioning.
  • FIG. 3 schematically shows an example application scenario of an embodiment of the present disclosure. Next, in conjunction with the example application scenario shown in FIG. 3, further details of the example processing performed by the electronic device and its respective units shown in FIG. 2 will be further described.
  • this example shows an indoor environment including three rooms Room 1, Room 2, and Room 3, and the arrangement of the beacon tag device and the location tag device in the indoor environment.
  • each room Room 1, Room 2, or Room 3 is equipped with a beacon tag device Beacon Tag 1, Beacon Tag 2 or Beacon Tag 3, and a positioning tag device Tag1 corresponding to the beacon tag device.
  • -A to Tag1-C, Tag2-A to Tag2-C or Tag3-A to Tag3-D (for example, installed on each wall).
  • the number of location tag devices in each room is only an example, and a smaller or more number can be used in practical applications.
  • the transceiver 210 of the electronic device 200 can, under the control of the control unit 220, sequentially send the Beacon Tag 1 to Beacon Tag 3 in the building where the area is located.
  • the address codes of multiple beacon tag devices for example, the address codes of 200 beacon tag devices in all 200 rooms in the example building described above with reference to FIG. 2 to activate the beacon tag device near the electronic device 200
  • Beacon Tag 1 to Beacon Tag 3 One or more of Beacon Tag 1 to Beacon Tag 3.
  • the electronic device 200 sends an address code of a beacon tag device to activate the corresponding beacon tag device, it is at least separated from the corresponding beacon tag device (and The address code of the next beacon tag device is sent after all processing time related to the location tag device in the area.
  • an example of interactive processing between an electronic device and a beacon tag device (and a location tag device in the area) will be mainly described.
  • the electronic device can perform similar interactions with each beacon tag device (and the location tag device in the area) in a time division manner such as the one described above. Processing, this will not be repeated.
  • the electronic device 200 can obtain the address code of the beacon tag device to be transmitted through various appropriate methods.
  • an electronic device 200 such as a user equipment is in an area covered by a cellular network, it may, for example, pre-receive the address codes of multiple beacon tag devices including Beacon Tag 1 to Beacon Tag 3 from the base station.
  • the electronic device 200 is in an area without cellular network coverage, it can read the address codes of multiple beacon tag devices from the storage unit 230, for example.
  • the storage unit 230 is configured to store the address codes of a plurality of beacon tag devices in advance.
  • Each beacon tag device or location tag device has a unique address code (ID), which can be composed of a sequence of binary bits, for example.
  • ID unique address code
  • 4 is a schematic diagram showing an example address code sent according to an embodiment of the present disclosure, which schematically shows an example address code sent by the transceiver of the electronic device on the user equipment side of the embodiment of the present disclosure.
  • the address code is in the form of a bit sequence ⁇ 101001011 ⁇ with a length of 9.
  • bit 1 is to be transmitted, the transceiver 210 sends a pulse with a specific period and power.
  • bit 0 is transmitted, the transceiver 210 No signal is sent.
  • the tag device after receiving such an address code, for example, it can read the address code sent by the transceiver 210 by performing energy detection and recognition processing, and activates from the sleep state only when it reads its own address code. Is active.
  • adjacent beacon label devices among the plurality of beacon label devices may have different address codes.
  • the electronic device 200 when the electronic device 200 is at the junction between Room 2 and Room 3 in FIG. 3, if Beacon Tag 2 and Beacon Tag 3 use the same address code, the electronic device 200 may send such an address code at the same time. Activating Beacon Tag 2 and Beacon Tag 3 causes them to interfere with each other. Therefore, it is preferable to set different address codes for Beacon Tag 1 to Beacon Tag 3 in the example shown in FIG. 3 to avoid interference.
  • the address codes of Beacon Tag 1, Beacon Tag 2, and Beacon Tag 3 can be ⁇ 100101010 ⁇ , ⁇ 101101010 ⁇ , ⁇ 11010110 ⁇ , respectively.
  • At least two non-adjacent beacon tag devices among the plurality of beacon tag devices may have the same address code. Since the backscattering communication distance is relatively short, even if the beacon tag devices at a certain distance work at the same time (for example, interacting with different user equipment respectively), they can not interfere with each other, that is, they no longer need to work in a time-division manner. Therefore, the same address code can be reused for beacon tag devices separated by a certain distance.
  • FIG. 5 schematically shows an example of the arrangement of beacon tag devices in multiple areas according to an embodiment of the present disclosure.
  • Figure 5 shows a plurality of hexagonal areas with three different backgrounds. Each area may include, for example, a predetermined number of rooms (for example, Room 1 to Room 3 shown in Figure 3), and each room is set with a letter. Labeling device.
  • FIG. 5 schematically shows only 2 or 3 beacon tag devices set in the room of this area in an area with a solid color background.
  • different address codes are set for the beacon tag devices in order to avoid interference.
  • areas that are not adjacent to each other that is, areas represented by the same background in FIG.
  • the same address code can be used. For example, you can set the same 2 or 3 address codes for Area1, Area3, and all areas represented by a solid color background, but set different address codes for the beacon tag devices in Area1 and Area2, which are in Area3, Area2, and Area4.
  • the beacon tag devices set different address codes from each other.
  • the number of address codes of the beacon tag device acquired and/or sent by the electronic device can be reduced, thereby further reducing the processing load and/or speeding up the positioning speed.
  • the transceiver 210 of the electronic device 200 sequentially sending the address codes of the beacon tag device such as described above with reference to FIGS. 4 and 5, the beacon tag device near the electronic device 200 that has received its own address code is activated, and The electronic device 200 is provided with the tag configuration information for the positioning tag device in the area where the beacon tag device is located in an appropriate manner.
  • Beacon Tag 1 For example, in the example scenario shown in FIG. 3, assuming that the electronic device 200 is in the center of Room 2 and sequentially sends the address codes of multiple beacon tags including Beacon Tag 1 to Beacon Tag 3, then the Beacon near the electronic device 200 Tag 1, Beacon Tag 2, and Beacon Tag 3 will be activated in sequence when receiving their own address code. The following will take Beacon Tag 2 currently active as an example for description.
  • the activated Beacon Tag 2 will provide the electronic device 200 with tag configuration information for the location tag devices Tag2-A to Tag2-C in the area where the Beacon Tag 2 is located, that is, in Room 2, in an appropriate manner.
  • Beacon Tag 2 can reflect the radio frequency reference signal emitted from a signal source (such as the electronic device 200 or other devices capable of emitting radio frequency signals) through backscatter communication, and modulate the tag configuration information in the reflection reference signal in the process. Signal.
  • the control unit 220 of the electronic device 200 may demodulate the reflected reference signal received by the transceiver 210, so as to obtain the tag configuration information. The specific details of how to obtain the label configuration information will be further described in the configuration example of the control unit later.
  • the tag configuration information obtained by the control unit 220 from activating the beacon tag device may include, for example, the number of the set of positioning tag devices in the area where the beacon tag device is located.
  • the tag configuration information obtained by the control unit 220 from the activated Beacon Tag 2 may be a bit sequence ⁇ 101 ⁇ of length 3, which represents the number of the set of positioning tag devices ⁇ Tag2-A, Tag2-B, Tag2-C ⁇ .
  • the control unit 220 may control the transceiver 230 to send the aforementioned number to the base station, and receive from the base station the address code of each positioning tag device Tag2-A, Tag2-B, and Tag2-C in the positioning tag set corresponding to the aforementioned number.
  • the address code of each location tag device may take the form of a bit sequence of length 9 similar to the address code of the beacon tag device.
  • the amount of data that needs to be stored and transmitted by a beacon tag device with limited storage and communication capabilities can be reduced.
  • the processing efficiency can be improved/the processing time can be reduced.
  • FIG. 6A shows an example of a beacon tag address code, tag configuration information, and location tag address code according to an embodiment of the present disclosure, which is suitable for a situation where there is a cellular network so that the electronic device 200 can communicate with a base station.
  • Table (I) of Fig. 6A shows information on beacon tag devices of respective rooms stored in the base station, for example.
  • the electronic device 200 may obtain the address code of the beacon tag device such as shown in the third column of Table (I) from the base station.
  • the tables (II.1) to (II.3) of FIG. 6A respectively show the tag configuration information of each beacon tag device Beacon Tag 1 to Beacon Tag 3, which are specifically the location in the area where each beacon tag device is located The number of the set of labeling devices.
  • the tables (II.1) to (II.3) of FIG. 6A can be respectively stored in the corresponding beacon tag devices, and can be obtained by the electronic device 200 from the activated beacon tag devices, for example.
  • the electronic device 200 may obtain the address of a group of positioning tags corresponding to the tag configuration information in Table (III) from the base station according to the tag configuration information obtained from the activated beacon tag device (the corresponding number of the set of positioning tag devices) code.
  • the table (III) of FIG. 6A such as stored in the base station may optionally include an additional fourth column indicating the location information of each positioning tag device.
  • the electronic device 200 can also obtain the location information of the positioning tag device in the area where the beacon tag device is located from the base station according to the tag configuration information obtained from the activated beacon tag device.
  • the address code is set to not only be associated with the tag configuration information of the beacon tag device Beacon Tag 2 of the room where Tag2-B is located, but also be associated with the tag configuration information of the beacon tag device Beacon Tag 3 of the adjacent room Room 3 .
  • the tag configuration information obtained by the user equipment 200 from the activated beacon tag device is the same as
  • the address code of the location tag device Tag2-B at the junction of the room is correlated, so that the address code of Tag2-B can be obtained from the base station according to the tag configuration information to activate Tag2-B and use it for positioning processing. In this way, the utilization rate of the location tag device near the room junction is improved.
  • the address code of the location tag device Tag3-B near the junction of Room 2 and Room 3 is not only associated with the tag configuration information of the beacon tag device Beacon Tag 3 of Room 3, but also with the tag configuration information of Room 2
  • the tag configuration information of Beacon Tag 2 is associated with the beacon tag device.
  • the example described above with reference to FIG. 6A is suitable for a case where there is a cellular network so that the electronic device 200 can communicate with a base station.
  • the tag configuration information obtained by the control unit 220 from activating the beacon tag device may, for example, directly include the information of each positioning tag device in the area where the beacon tag device is located. address code.
  • Fig. 6B shows another example of a beacon tag address and tag configuration information (including a positioning tag address) according to an embodiment of the present disclosure, which is suitable for a situation where the electronic device 200 is in an area not covered by a cellular network.
  • Table (I) of FIG. 6B shows related information including address codes of each beacon tag device, which is stored in the storage unit 230 of the electronic device 200 in advance, for example.
  • the tables (II.1) to (II.3) of FIG. 6B show the tag configuration information of each beacon tag device Beacon Tag 1 to Beacon Tag 3, which are specifically the positioning tags in the area where each beacon tag device is located Device related information including address code.
  • the tables (II.1) to (II.3) of FIG. 6B may optionally include an additional third column indicating the location information of each positioning tag device. That is, the tag configuration information acquired by the electronic device 200 from the activated beacon tag device may also include the location information of the positioning tag device in the area where the beacon tag device is located.
  • control unit 220 of the electronic device 200 When the control unit 220 of the electronic device 200 appropriately obtains the address code of the positioning tag device in the area where the beacon tag device is located according to the tag configuration information obtained from the activated beacon tag device (for example, the above table (III) or figure of FIG. 6A) After the address codes shown in Table 6B (II.1) to (II.3)), the control unit 220 can control the transceiver 210 to send these address codes to activate the corresponding positioning tag device.
  • the control unit 220 may control the transceiver 210 to sequentially send the address codes of these positioning tag devices to activate each positioning tag device in turn.
  • the transceiver 210 can sequentially receive the reflected reference signal obtained by reflecting the radio frequency reference signal from each activated positioning tag device. In this way, the control unit 220 can distinguish the reflected reference signals from each positioning tag device in a time division manner, and process each reflected reference signal separately.
  • multiple positioning tag devices in the area where one beacon tag device is located can be set to have the same address code.
  • the control unit 220 of the electronic device 200 controls the transceiver 210 to send the address code to activate multiple location tag devices at the same time.
  • multiple activated positioning tag devices can use different modulation frequencies and/or modulation pilot sequences to modulate the received radio frequency reference signals and perform backscatter, so that the electronic device 200 can simultaneously receive multiple reflection references that can be distinguished Signal.
  • a plurality of activated positioning tag devices may reflect their respective received radio frequency reference signals at different times (that is, the activation and reflection of each positioning tag device have different time offsets), so that the electronic equipment 200 receives multiple reflection reference signals with different time offsets.
  • the control unit 200 obtains nearby positioning tag devices according to the tag configuration information.
  • the modulation frequency related information and/or modulation pilot sequence related information of these positioning tag devices can be further obtained according to the tag configuration information.
  • the control unit 200 can further obtain the reflection time of the positioning tag device according to the beacon tag configuration information Related Information.
  • the above-mentioned modulation frequency related information, modulation pilot sequence related information, and/or reflection time related information can be stored as additional columns in the form of table (III) in FIG.
  • control unit 200 can distinguish the reflected reference signal from each activated positioning tag device received through the transceiver 210, so that each reflected reference signal can be appropriately processed to calculate the corresponding activated positioning tag device Distance to electronic equipment. Further details of the related processing will be described later in the configuration example of the control unit.
  • each active location tag device may reflect the radio frequency reference signal emitted from the electronic device 200 (or other separate signal source) used as a signal source through backscatter communication, and optionally in the process
  • the reflected reference signal is modulated in a predetermined manner.
  • the control unit 220 of the electronic device 200 can use the information about the transmitted radio frequency reference signal it knows in advance, and optionally the relevant information about the related processing of the activated positioning tag device in the backscattering process (such as about modulation or about Time offset and other information), calculate the correlation function between the transmitted RF reference signal and the reflected reference signal received by the transceiver 210, and calculate the round-trip time (Round-TripTime, RTT) of the RF reference signal by determining the peak value of the correlation function. ) (Or the arrival time of the reflected reference signal). Based on the calculated RTT, the control unit 220 can determine the distance between the electronic device 200 and the corresponding positioning tag device. Specific details on how to calculate the above-mentioned distance will be provided later in the configuration example of the control unit.
  • the electronic device After calculating the distance between the electronic device 200 and each activated location tag device, the electronic device can use various appropriate methods according to the location information of each activated location tag device and the distance between each activated location tag device and the electronic device 200. For example, a multi-point positioning method determines the position of the electronic device 200.
  • FIG. 7 is a schematic diagram for explaining an example positioning process according to an embodiment of the present disclosure, which schematically shows an example of the above-mentioned positioning process performed by the control unit 220.
  • the user equipment UE as an example of the electronic device 200 is in a room Room2 such as that shown in FIG. -Address code and location information of A, Tag2-B, Tag2-C.
  • the control unit of the UE controls the transceiver to sequentially send the acquired address codes to activate each positioning tag device Tag2-A, Tag2-B or Tag2-C in turn, and calculate the UE based on the reflected reference signal received from the activated positioning tag device The distance d 1 , d 2 or d 3 from the positioning tag device. Then, the UE can determine the location of the UE based on the calculated distance and the location information of each positioning tag device through various existing methods such as the trilateral positioning method.
  • the electronic device of the embodiment of the present disclosure can achieve The positioning accuracy is better than the positioning method based on OTDOA between the base station and the user equipment, and theoretically reaches the centimeter-level estimation accuracy.
  • the positioning error achieved by the electronic device of this embodiment can be reduced as the signal-to-noise ratio (SNR) of the radio frequency reference signal used for positioning increases.
  • SNR signal-to-noise ratio
  • the average additional time delay caused by obstacles such as walls makes the error of the OTDOA-based positioning method unable to be reduced with the increase of the signal-to-noise ratio.
  • FIG. 8 is a block diagram showing one configuration example of a control unit in an electronic device on the user equipment side according to an embodiment of the present disclosure.
  • the control unit 220 shown in FIG. 8 is a configuration example of the control unit 220 of the electronic device 200 of FIG. 2, so the following description will continue on the basis of the configuration of the electronic device described above with reference to FIGS. 2 to 7 and the processing performed by it .
  • control unit 220 in this example includes a configuration information acquisition unit 2210 and a positioning unit 2220.
  • the electronic device can be used as a signal source to send a predetermined radio frequency reference signal through a transceiver (or by another signal source), and the transceiver can receive the reflection of the activated beacon tag device and modulate it with the tag configuration information. Reflected signal derived from RF reference signal.
  • the configuration information obtaining unit 2210 included in the control unit of the electronic device can obtain the tag configuration information from the reflected signal received by the transceiver through demodulation processing.
  • the configuration information acquiring unit 2210 may pre-estimate the channel experienced by the backscattered signal from the activated beacon tag device.
  • Such channel estimation can include two parts: the environment reflection channel and the beacon tag device reflection channel.
  • part of the signal sent by the electronic device reaches the beacon tag device, and then returns to the electronic device after being modulated; the other part of the signal is reflected by the environment (such as the wall) and then returns to the electronic device, which can be called It is a self-interference signal.
  • the self-interference signal can be estimated, and after the self-interference signal is eliminated from the reflected signal received by the electronic device, the reflected signal from the beacon tag device can be obtained to demodulate it and obtain the label configuration information .
  • the electronic device after the electronic device activates the beacon tag device, it can first interact with the beacon tag device according to a preset process, so that the configuration information acquisition unit 2210 can perform channel estimation processing.
  • the electronic device as the user equipment UE (which has a configuration such as the electronic device 200 described above with reference to FIGS. 2 to 7 and can perform corresponding processing) includes a control unit having a configuration information acquisition unit 2210 and a positioning unit 2220 220. It interacts with the activation beacon tag device Beacon Tag.
  • FIG. 9 is a schematic diagram for explaining the environmental reflection channel estimation performed by the tag information acquiring unit 2210, which shows an example of estimating the environmental reflection channel.
  • Beacon Tag After Beacon Tag is activated, it first enters the silent mode without modulating any signal, as shown in Figure 9.
  • the silent period of the Beacon Tag can be preset (for example, 16 ⁇ s), and it is known on both the UE and the Beacon Tag side.
  • the configuration information acquisition unit 2210 in the UE controls the transceiver of the UE to send a radio frequency reference signal x(t).
  • the signal that reaches the transceiver of the UE after being reflected by the wall W as shown in the figure is as follows: (1)
  • h env (t) represents the multipath channel (Multipath channel) that the signal experiences. Since x(t) is known, the configuration information acquiring unit 2210 can use any appropriate existing channel estimation method to obtain h env (t).
  • FIG. 10 is a schematic diagram for explaining the tag reflection channel estimation performed by the tag information acquiring unit 2210, which shows an example of estimating the reflection channel of a beacon tag device.
  • Beacon Tag starts to modulate the radio frequency reference signal x(t) from the UE.
  • the signal modulated by the Beacon Tag is the pilot signal known by the configuration information acquisition unit 2210 to facilitate its estimation of the channel parameters reflected by the Beacon Tag.
  • the channel estimation time can be preset (for example, 32 ⁇ s), and is known at the configuration information acquisition unit 2210 and the Beacon Tag end.
  • the beacon tag device Beacon Tag may, for example, use a phase modulator to realize the modulation of the radio frequency reference signal x(t), which uses different phases to indicate the information to be transmitted.
  • Beacon Tag uses the known pilot signal Modulate the received RF reference signal and reflect the signal back to the UE It can be expressed according to the following formula (2):
  • h f (t) represents the forward channel experienced by the radio frequency reference signal x(t) from the UE to the Beacon Tag
  • h b (t) represents the reverse channel experienced by the signal returning from the Beacon Tag to the UE (Backward channel);
  • y env (t) can be estimated according to formula (2), and subtracting it, the reflection signal from the Beacon Tag expressed by the following formula (3) can be obtained
  • the configuration information acquisition unit 2210 can use any existing estimation method for estimation.
  • what the configuration information acquiring unit 2210 actually obtains through channel estimation is a composite channel parameter, rather than a single h f (t) or h b (t).
  • the received reflected signal from the Beacon Tag can be further expressed as:
  • the configuration information acquiring unit 2210 can complete the channel estimation processing of the beacon tag device for subsequent demodulation of the reflected signal from the beacon tag device.
  • the beacon tag device can transmit the tag configuration information to be sent by changing the phase or amplitude of the reflected signal, that is, to correspond to the tag configuration
  • the information modulation signal e j ⁇ (t) modulates the reflected signal.
  • the reflected signal y d (t) from the Beacon Tag received at this time can be obtained:
  • the configuration information obtaining unit 2210 may perform demodulation in any appropriate manner to obtain the tag configuration information therein.
  • methods such as time domain maximum ratio combining (MRC) can be used, and the symbols modulated by the beacon tag device can be obtained through demodulation, and then the tag configuration information sent by the beacon tag device can be obtained.
  • the tag configuration information obtained by the configuration information obtaining unit 2210 through processing such as demodulation may be a bit sequence of a predetermined length, such as the number of the set of positioning tag devices in the area where the beacon tag device is located.
  • the electronic device can be used as a signal source to send a predetermined radio frequency reference signal through a transceiver (or by another signal source), and the transceiver can receive the reflection of the activated positioning beacon tag device and optionally follow the predetermined The reflected reference signal obtained by modulating the radio frequency reference signal in a manner.
  • the positioning unit 2220 included in the control unit of the electronic device can use the information of the radio frequency reference signal that it knows in advance, and optionally related information about the related processing of the activated positioning tag device in the backscattering process (such as about modulation or Information about time offset, etc.), calculate the correlation function between the transmitted RF reference signal and the reflected reference signal received by the transceiver, and calculate the round-trip time (RTT) (or reflection of the RF reference signal) by determining the peak value of the correlation function The arrival time of the reference signal). Based on the calculated RTT, the positioning unit 2220 can determine the distance between the electronic device and the corresponding positioning tag device. Based on such a distance, the positioning unit 2220 can determine the position of the electronic device through a multi-point positioning method or the like.
  • RTT round-trip time
  • the process of sending a radio frequency reference signal to the activation location tag device and receiving the reflection reference signal provided by backscattering from the activation location tag device by a signal source such as an electronic device is the same as the previous "example processing performed by the configuration information acquisition unit" Part of the process described for the activation of the beacon tag device is similar.
  • the electronic device does not need to demodulate the information from the reflected reference signal from the activation location tag device, but only needs to determine the correlation between the RF reference signal and the reflected signal.
  • the RTT can be calculated by the peak value of the function.
  • the positioning unit 2220 performs channel estimation for the activated positioning tag device Tagi through channel estimation processing in a manner similar to the above "Example processing performed by the configuration information acquisition unit", and obtains its composite channel.
  • a predetermined pilot signal is used via Tagi
  • the signal received by the electronic device after modulation and reflection can be expressed as:
  • the above estimated round-trip time The processing can be simplified appropriately according to the actual situation. For example, in an indoor environment, the environmental reflection channel and the tag reflection channel usually change slowly. Therefore, it can be considered that the channel parameters remain unchanged during the measurement time. Will be simplified to a constant. In this case, the processing on Tagi's channel estimation can be at least partially omitted.
  • each location tag uses a different address code and activates each location tag in a time-division manner, so that the reference signal from each activated location tag reaches the electronic device in a time-division manner (that is, there is no need to modulate the reference signal to distinguish the activation of each location tag.
  • the pilot signal modulated by each tag Tagi can be Simplify to 1, thereby further simplifying the above formula (8).
  • multiple positioning tag devices in the area where a beacon tag device is located can be set to have the same address code. After the electronic device obtains the address code according to the tag configuration information from the beacon tag device and sends the address code, multiple positioning tag devices are activated at the same time.
  • each positioning tag device can be used at different times. Reflect the radio frequency reference signals received by them, or use different modulation frequencies and/or modulation pilot sequences to modulate the radio frequency reference signals received by them and perform backscattering.
  • the positioning unit 2210 may be based on the reflection time related information, modulation frequency related information, and/or modulation pilot sequence related information associated with these positioning tag devices (for example, it may be combined with the address codes of these positioning tag devices according to the tag configuration information). Obtain), distinguish these reflected reference signals for corresponding processing.
  • the activated positioning tag devices Tag 1-A to Tag 1-C with the same address code reflect the radio frequency reference signals they receive at different times to provide multiple distinguishable reflected reference signals.
  • multiple activated positioning tag devices Tag 1-A to Tag 1-C can backscatter the received radio frequency reference signals in sequence according to a preset sequence and time offset.
  • FIG. 11 shows a schematic diagram of an example of time offset and transmission sequence set for multiple positioning tag devices with the same address code according to an embodiment of the present disclosure.
  • each of the positioning tag devices Tag 1-A to Tag 1-C in the room Room 1 such as the example scene described above with reference to FIG. 3 has the same address code. Therefore, after the electronic device obtains the address code according to the tag configuration information from the beacon tag device Beacon Tag1 in Room 1, and sends the address code, Tag 1-A to Tag 1-C are activated at the same time. For the RF reference signal sent by a signal source such as an electronic device, the activated Tag 1-A to Tag 1-C are shifted in time by T o in the predetermined sequence of Tag 1-A, Tag 1-B, and Tag 1-C (e.g. 1ms) sequentially backscatter the received RF reference signal.
  • a guard time T g (for example, 50 ns) is established between the backscattered transmissions of two consecutive positioning tag devices.
  • the reflection time related information including the predetermined sequence of Tag 1-A, Tag 1-B, and Tag 1-C, time offset T o (and optional guard time T g ), etc. can be It is stored as an additional column in a table having the form of the table (III) of FIG. 6A or the tables (II.1) to (II.3) of FIG. 6B.
  • the control unit 220 of the electronic device obtains the address codes of Tag 1-A, Tag 1-B, and Tag 1-C according to the beacon tag configuration information from Beacon Tag 1, it can obtain Tag 1-A and Tag 1 at the same time.
  • the above-mentioned reflection time related information of -B and Tag 1-C is for reference by the positioning unit 2220 in the control unit.
  • the positioning unit 2220 can separately send and receive the electronic device according to the predetermined sequence indicated by the reflection time related information, the time offset T o (and the optional guard time T g ), etc.
  • the signal received by the device at the corresponding time is used as the received signal for the corresponding activated positioning tag device (that is, the reflected reference signal from the activated positioning tag device), and the above basic example Describe the process of calculating the RRT to determine the RRT for each location tag.
  • the activated location tag devices with the same address code use different modulation frequencies to modulate and reflect the received radio frequency reference signals to provide multiple distinguishable reflected reference signals.
  • multiple activated positioning tag devices Tag 1-A to Tag 1-C can modulate the received radio frequency reference signals at different frequencies according to a preset frequency offset.
  • FIG. 12 shows a schematic diagram of an example of a frequency offset set for a plurality of location tag devices with the same address code according to an embodiment of the present disclosure.
  • each of the positioning tag devices Tag 1-A to Tag 1-C in the room Room 1 such as the example scene described above with reference to FIG. 3 has the same address code. Therefore, after the electronic device obtains the address code according to the tag configuration information from the beacon tag device Beacon Tag1 in Room 1, and sends the address code, Tag 1-A to Tag 1-C are activated at the same time.
  • the frequency offset may be directly in the above table f i as the modulation frequency of the stored information.
  • control unit 220 of the electronic device when the control unit 220 of the electronic device obtains the address codes of Tag 1-A, Tag 1-B, and Tag 1-C according to the beacon tag configuration information from Beacon Tag1, it can obtain Tag 1-A and Tag 1 at the same time.
  • the above-mentioned modulation frequency related information of -B and Tag 1-C is for reference by the positioning unit 2220 in the control unit.
  • the positioning unit 2220 can activate the positioning tag device according to the modulation frequency (that is, the frequency offset f i ) indicated by the modulation frequency related information/obtained from the modulation frequency related information, Obtain the received signal for the corresponding activated location tag device (ie, the reflected reference signal from the activated location tag device) in the corresponding frequency band, and perform the processing of calculating the RRT described in the basic example above, so as to determine for each location tag RRT.
  • the modulation frequency that is, the frequency offset f i
  • the activated location tag devices with the same address code use different pilot sequences to modulate and reflect the received radio frequency reference signals to provide multiple distinguishable reflected reference signals.
  • multiple activated positioning tag devices Tag 1-A to Tag 1-C can use multiple preset pilot sequences to modulate the received radio frequency reference signals, that is, to modulate the RF reference signals corresponding to different pilot sequences. It modulates the radio frequency reference signal it receives.
  • an orthogonal sequence such as a Constant amplitude zero auto correlation (CAZAC) sequence or a Walsh Hadamard sequence is used, so that the electronic device can separate the received reflection reference Signal and estimate their respective delays.
  • non-orthogonal sequences based on non-orthogonal multiple access (Non-orthogonal multiple access, NOMA) technology can also be used as pilot sequences.
  • the reflected reference signal y d (t) received by the transceiver of the electronic device has the following form:
  • Corresponding pilot sequence related information about the different pilot sequences modulated by Tag 1-A, Tag 1-B, and Tag 1-C can be stored as an additional column in the table (III) of FIG. 6A or the table of FIG. 6B (II.1) to (II.3) forms.
  • control unit 220 of the electronic device obtains the address codes of Tag 1-A, Tag 1-B, and Tag 1-C according to the beacon tag configuration information from Beacon Tag1, it can obtain Tag 1-A and Tag 1 at the same time.
  • the above-mentioned pilot sequence related information of -B and Tag 1-C is for reference by the positioning unit 2220 in the control unit.
  • the positioning unit 2220 can use the pilot sequence indicated by the pilot sequence related information to activate the positioning tag device, from the reflected reference signal in the form of formula (9) or (10). Extract the received signal for the corresponding activated positioning tag device (that is, the reflected reference signal from the activated positioning tag device) or And perform the process of calculating the RRT described in the basic example above to determine the RRT for each positioning tag.
  • the positioning unit 2220 obtains Tagi's RRT through processing such as the example described above. Then it can use the following formula to get the distance between the electronic device and Tagi:
  • c represents the speed of light.
  • the Trilateration method calculates the plane position (x 0 , y 0 ) of the electronic device by solving the following equation (12):
  • the position information about the planar positions of Tag 1-A, Tag 1-B, and Tag 1-C can be stored as additional columns in the table (III) of FIG. 6A or the table (II.1) of FIG. 6B To the table in the form of (II.3).
  • the control unit 220 of the electronic device obtains the address codes of Tag 1-A, Tag 1-B, and Tag 1-C according to the beacon tag configuration information from Beacon Tag1, it can obtain Tag 1-A and Tag 1 at the same time.
  • the above-mentioned position information of -B and Tag 1-C is for reference by the positioning unit 2220 in the control unit.
  • the positioning unit 2220 realizes the positioning of the electronic device.
  • control unit 220 The configuration example of the control unit 220 and the example processing implemented by the configuration information acquisition unit 2210 and the positioning unit 2220 included in the control unit 220 are described above with reference to specific examples. Note that the configuration examples of the control unit and the example processing of the related units provided here are only for helping those skilled in the art understand the further details of the embodiments of the present disclosure, and are not intended to be [2.1 Basic Configuration Example of Electronic Equipment] The functions or processing of the electronic devices and their control units described in the constitute any limitation.
  • Fig. 13 is a block diagram showing a configuration example of an electronic device that can be used as a beacon tag device according to an embodiment of the present disclosure.
  • the electronic device 1300 may include a receiving unit 1310, a control unit 1320, a configuration information providing unit 1320, and an optional storage unit 1330.
  • each unit of the electronic device 1300 may be included in the processing circuit.
  • the electronic device 1300 may include one processing circuit or multiple processing circuits.
  • the processing circuit may include various discrete functional units to perform various different functions and/or operations. It should be noted that these functional units may be physical entities or logical entities, and units with different titles may be implemented by the same physical entity.
  • the electronic device 1300 that can be used as a beacon tag device may have, for example, the basic functions and physical configuration of a tag device such as an RFID tag. The following will focus on the description and the present disclosure on the basis of the basic functions of the tag device such as an RFID tag. Embodiment related functional modules and their processing.
  • the receiving unit 1310 of the electronic device 1300 may receive an address code from a user device such as the electronic device 200 described above with reference to FIG. 2 and read the address by means such as existing energy detection and recognition methods Code (for example, the receiving unit 1310 may have an energy detection and identification module).
  • the receiving unit 1310 of the electronic device 1300 receives the address code of the electronic device 1300, it controls the electronic device 1300 to enter the active state from the dormant state.
  • the configuration information providing unit 1320 can provide the user equipment with label configuration information for the positioning label device in the area where the electronic device 1300 is located (this information is pre-stored in the storage unit 1330, for example), so that The user equipment obtains the address code of the positioning tag device in the area where the electronic device 1300 is located according to the tag configuration information.
  • the user equipment can first activate the beacon tag device nearby, and then obtain the tag configuration information from the activated beacon tag device to obtain the address code of the nearby location tag device, Thereby, the number of address codes of the positioning tags to be sent by the user equipment is reduced, the processing load is reduced, and the positioning speed is facilitated.
  • Each beacon tag device including the electronic device 1300 has a unique address code (ID), which can be composed of a sequence of binary bits, for example, and can have a bit sequence of length 9 such as shown in FIG. 4 ⁇ 101001011 ⁇ form.
  • ID unique address code
  • the electronic device 1300 and another electronic device adjacent to the electronic device 1300 that can be used as a beacon tag device have different address codes.
  • the electronic device 1300 is used as the beacon tag device Beacon Tag 1 in the room Room1 in the example shown in FIG. Different address codes.
  • the electronic device 1300 and another electronic device that is not adjacent to the electronic device 1300 and can be used as a beacon tag device may have the same address code.
  • adjacent beacon label devices among the plurality of beacon label devices may have different address codes.
  • the electronic device 1300 when it is in the area Area1 shown in FIG. 5, it may have the same address code as one of the beacon tagging devices in the area Area2.
  • the number of address codes of the beacon tag device acquired and/or sent by the user equipment can be reduced, thereby further reducing the processing load and/or speeding up the positioning speed.
  • the configuration information providing unit 1320 can provide the user equipment with label configuration information for the positioning label device in the area where the electronic device 1300 is located in an appropriate manner.
  • the receiving unit 1310 of the electronic device 1300 may receive a predetermined radio frequency reference signal sent by the user equipment as a signal source (or by another signal source).
  • the configuration information providing unit 1320 modulates the label configuration information stored in the storage unit 1330 onto the received radio frequency reference signal, and sends out the modulated radio frequency signal (that is, the reflected signal) through backscattering for supply
  • the user equipment receives it, so that the user equipment obtains the label configuration information through demodulation processing or the like according to the reflected signal, and then obtains the address code of the positioning label device in the area where the electronic device 1300 is located according to the label configuration information.
  • the configuration information providing unit 1320 may, for example, change the antenna impedance of the electronic device as the beacon tag device according to the tag configuration information to be transmitted, thereby changing the backscattered radio frequency signal, so as to realize the above-mentioned modulation processing.
  • the configuration information providing unit 1320 can transmit the tag configuration information to be sent by changing the phase or amplitude of the reflection signal, that is, modulate the reflection signal with a modulation signal e j ⁇ (t) corresponding to the tag configuration information.
  • the configuration information providing unit 1320 may use various existing methods to implement specific modulation processing, which will not be repeated here.
  • the tag configuration information stored in the storage unit 1330 and issued by the configuration information providing unit 1320 may include, for example, the number of the set of positioning tag devices in the area where the electronic device 1300 is located.
  • the tag configuration information stored in the storage unit 1330 may, for example, have the form of one of the tables (II.1) to (II.3) in FIG. 6A or FIG. 6B.
  • the tag configuration information may be a bit sequence ⁇ 101 ⁇ with a length of 3, which represents the number of the set of positioning tag devices ⁇ Tag2-A, Tag2-B, Tag2-C ⁇ .
  • the user equipment After the user equipment obtains the numbered form tag configuration information of the above set provided by the configuration information providing unit 1320, it can send it to the base station, and receive from the base station the address code of each location tag device in the location tag set corresponding to the above number. .
  • the tag configuration information stored in the storage unit 1330 and issued by the configuration information providing unit 1320 may include a different address code of each positioning tag device in the area where the electronic device 1300 is located.
  • the tag configuration information stored in the storage unit 1330 may have the form of one of the tables (II.1) to (II.3) of FIG. 6B, for example.
  • the tag configuration information may include multiple bit sequences with a length of 9, and each bit sequence represents an address code indicating the location of the tag device.
  • the user equipment can directly read the address code of each positioning tag device included therein.
  • the label configuration information provided by the configuration information providing unit 1320 may include the same address code of each positioning label device in the area where the electronic device 1300 is located.
  • the tag configuration information further includes the modulation frequency, modulation pilot sequence, and/or reflection time related information of the positioning tag device in the area where the electronic device 1300 is located.
  • the modulation frequency-related information may indicate, for example, the offset between the modulation frequencies used by each positioning tag device in the area where the electronic device 1300 is located to modulate the radio frequency reference signal received.
  • the modulated pilot sequence related information may indicate, for example, the modulated pilot sequence used by each positioning tag device in the area where the electronic device 1300 is located to modulate the radio frequency reference signal received by each.
  • the reflection time related information may indicate, for example, the offset between the times at which each positioning tag device in the area where the electronic device 1300 is to reflect the radio frequency reference signal received.
  • the tag configuration information may also include location information of the positioning tag device in the area where the electronic device 1300 is located.
  • the above-mentioned optional modulation frequency, modulation pilot sequence and/or reflection time related information, and optional position information can be stored in the form of additional columns such as one of the tables (II.1) to (II.3) in FIG. 6B In the storage unit 1330.
  • the electronic device used as the user equipment can perform the channel through which the backscattered signal from the activated beacon tag device is processed in advance.
  • the estimation includes the description of the environmental reflection channel and the reflection channel of the beacon tag device with reference to FIGS. 9 and 10 (such as implemented by the control unit of the electronic device shown in FIG. 8).
  • the electronic device 1300 that can be used as a beacon tag device can perform various interactions with the user equipment regarding channel estimation according to preset settings.
  • the electronic device 1300 may first enter the silent mode after activation like the beacon tag device Tag shown in FIG. 8, and the configuration information providing unit 1320 does not modulate any signal at this time.
  • the quiet period can be preset (for example, 16 ⁇ s), and is known to both the electronic device 1300 and the user equipment side.
  • the user equipment uses the radio frequency reference signal x(t) to estimate the environmental reflection channel in the manner described above with reference to FIG. 8.
  • the electronic device 1300 may start to use the configuration information providing unit 1320 to modulate and reflect the radio frequency reference signal x(t) from the user equipment as shown in the beacon tag device Tag shown in FIG. 9.
  • the configuration information providing unit 1320 uses the known pilot signal on the user equipment side Modulation is performed so that the user equipment side estimates the channel parameters reflected by the electronic device 1300.
  • the channel estimation time can be preset (for example, 32 ⁇ s), and is known on both the electronic device 1300 and the user equipment side. In the above manner, the electronic device 1300 can interact with the user equipment to complete the channel estimation processing of the electronic device 1300 for the user equipment to subsequently demodulate the reflected signal from the electronic device 1300.
  • the electronic device 1300 After the electronic device 1300 completes the channel estimation process by interacting with the user equipment in such a manner as described above, the electronic device 1300 can transmit the tag configuration information that needs to be sent by changing the phase or amplitude of the reflected signal, that is, the tag configuration information corresponding to the tag configuration information
  • the modulation signal e j ⁇ (t) modulates the reflected signal, so that the user equipment uses an appropriate method to demodulate to obtain the tag configuration information therein.
  • the configuration example of the electronic device 1300 that can be used as a beacon tag device according to an embodiment of the present disclosure has been described above. Note that the electronic device 1300 of this embodiment can interact with the electronic device on the user equipment side described above with reference to FIGS. 2 to 12, so it can be implemented in ⁇ 2. Configuration example of the electronic device on the user equipment side> The full functions and processing of the beacon tag device and all the benefits are obtained, and the description will not be repeated here.
  • FIG. 14 is a block diagram showing one configuration example of an electronic device that can be used as a beacon tag device according to an embodiment of the present disclosure.
  • the electronic device 1400 may include a receiving unit 1410 and a reflection reference signal providing unit 1420.
  • each unit of the electronic device 1400 may be included in the processing circuit.
  • the electronic device 1400 may include one processing circuit or multiple processing circuits.
  • the processing circuit may include various discrete functional units to perform various different functions and/or operations. It should be noted that these functional units may be physical entities or logical entities, and units with different titles may be implemented by the same physical entity.
  • the electronic device 1400 that can be used as a positioning tag device may, for example, have the basic functions and physical configuration of a tag device such as an RFID tag. The following will focus on the description and implementation of the present disclosure on the basis of the basic functions of the tag device such as an RFID tag. Example related functional modules and their processing.
  • the receiving unit 1410 of the electronic device 1400 may receive an address code from a user device such as the electronic device 200 described above with reference to FIG. 2, and read the address by means such as existing energy detection and recognition methods code.
  • the receiving unit 1410 may enter the active state from the dormant state.
  • the receiving unit 1410 may receive a predetermined radio frequency reference signal sent by the user equipment as a signal source (or by another signal source).
  • the reflected reference signal providing unit 1420 may, for example, send out the reflected radio frequency reference signal (ie, send out the reflected reference signal) through backscattering, so that the user equipment can position according to the reflected reference signal.
  • Each location tag device including the electronic device 1400 has a unique address code (ID), which can be composed of a sequence of binary bits, for example, and can have a bit sequence of length 9 such as shown in FIG. 4 ⁇ 101001011 ⁇ form.
  • ID unique address code
  • the electronic device 1400 as the location tag device and other location tag devices located in the same area of the beacon tag device may have different address codes.
  • the electronic device 1400 when the electronic device 1400 is used as the location tag device Tag 1-A in the room Room1 in the example shown in FIG. 3, J is in the area where the beacon tag device Beacon Tag 1 is located, when the electronic device 1400 is Other positioning tag devices Tag 1-B and Tag 1-C have different address codes, such as shown in the table (III) of FIG. 6A or the table (II.1) of FIG. 6B.
  • the user equipment may send the address codes of these positioning tag devices in turn to activate each positioning tag device in turn.
  • the electronic device 1400 as the positioning tag device and other positioning tag devices located in the same area of the beacon tag device may have the same address code.
  • each location tag device will be activated at the same time.
  • each positioning tag device provides reflected reference signals in a specific preset manner, so that these reflected reference signals can be distinguished from the user equipment.
  • the electronic device 1400 serving as the location tag device and other location tag devices have the same address code, in order to make the user equipment come from each location tag device
  • the reflected reference signal can be distinguished, and the reflected reference signal providing unit 1420 of the electronic device 1400 will provide the reflected reference signal in a preset specific manner.
  • the reflected reference signal providing unit 1420 may reflect the received radio frequency reference signal at a predetermined time.
  • the reflection reference signal providing unit 1420 may use a predetermined modulation frequency and/or modulation pilot sequence to modulate and reflect the received radio frequency reference signal.
  • the reflection reference signal providing unit 1420 can, for example, change the antenna impedance of the electronic device serving as the positioning tag device according to these modulation or reflection settings, thereby changing the backscattered radio frequency signal, thereby realizing the aforementioned modulation or reflection processing.
  • the reflected reference signal providing unit 1420 may use various existing methods to implement specific modulation processing, which will not be repeated here.
  • the user equipment can obtain the address codes of these location tag devices according to the beacon tag device, and additionally obtain the reflection time, modulation frequency and/or modulation pilot sequence related information of each location tag device. . Therefore, when multiple positioning tag devices including the electronic device 1400 are activated at the same time to emit multiple reflection reference signals, the user equipment can distinguish according to the reflection time, modulation frequency, and/or modulation pilot sequence related information obtained by it. Or separate the reflected reference signal from each positioning tag device.
  • the electronic device 1400 is used as the activated location tag device Tag 1-A, which is different from the activated location tag device Tag 1-B and Tag 1-C (for example, through a reflective reference signal providing unit) with the same address code.
  • the radio frequency reference signals received by them are time-reflected to provide multiple distinguishable reflected reference signals.
  • a plurality of activated positioning tag devices Tag 1-A to Tag 1-C can be offset by T in a predetermined sequence of Tag 1-A, Tag 1-B, and Tag 1-C in a manner such as shown in FIG. 11 o (for example, 1ms) sequentially backscatter the received RF reference signal.
  • a guard time T g (for example, 50 ns) is established between the backscattered transmissions of two consecutive positioning tag devices.
  • the reflection time related information including the order of more than a predetermined time offset T o (and optionally the guard time T g) and the like may be stored as additional columns in a table with (III) in FIG. 6A or FIG. 6B Form (II .1) to (II.3) forms for the user equipment to obtain, and based on such reflection time related information to distinguish or separate the reflection reference signal from each positioning tag device.
  • the electronic device 1400 is used as the activated location tag device Tag 1-A, which is different from the activated location tag device Tag 1-B and Tag 1-C (for example, through a reflective reference signal providing unit) with the same address code.
  • the modulation frequency modulates the received radio frequency reference signal and reflects it to provide multiple distinguishable reflected reference signals.
  • a plurality of activated positioning tag devices Tag 1-A to Tag 1-C can perform radio frequency reference signals received by them at different frequencies according to a preset frequency offset f i in a manner such as shown in FIG. 12. modulation.
  • the activated Tag 1-A to Tag 1-C respectively generate a sine wave cos(f i t) with a frequency offset of f i , and multiply the sine wave cos(f i t) by the modulated symbol to convert it
  • the modulation frequency related information such as the rate f d and the protection frequency f g (alternatively, the modulation frequency related information directly including the frequency offset f i ) can be stored as an additional column in the table (III) of FIG. 6A or the table (III) of FIG. 6B.
  • Tables (II.1) to (II.3) form tables for user equipment to obtain and distinguish or separate the reflected reference signals from each positioning tag device based on such modulation frequency-related information.
  • the electronic device 1400 is used as the activated location tag device Tag 1-A, which is different from the activated location tag device Tag 1-B and Tag 1-C (for example, through a reflective reference signal providing unit) with the same address code.
  • the pilot sequence modulates and reflects the received radio frequency reference signal to provide multiple distinguishable reflected reference signals.
  • a plurality of activated positioning tag devices Tag 1-A to Tag 1-C may use a plurality of preset pilot sequences to modulate the received radio frequency reference signals, that is, to modulate the radio frequency reference signals corresponding to different pilot sequences. It modulates the radio frequency reference signal it receives.
  • a plurality of preset pilot sequences to modulate the received radio frequency reference signals, that is, to modulate the radio frequency reference signals corresponding to different pilot sequences. It modulates the radio frequency reference signal it receives.
  • an orthogonal sequence such as a CAZAC sequence or a Walsh Hadamard sequence is used.
  • non-orthogonal sequences based on NOMA technology can also be used as pilot sequences.
  • the pilot sequence related information used to indicate the pilot sequence used by Tag 1-A, Tag 1-B, and Tag 1-C can be stored as an additional column in the table (III) of FIG. 6A or in the table (III) of FIG. 6B.
  • Tables (II.1) to (II.3) form tables for user equipment to obtain and distinguish or separate the reflected reference signals from each positioning tag device based on such pilot sequence related information.
  • the configuration example of the electronic device 1400 that can be used as a positioning tag device according to an embodiment of the present disclosure has been described above.
  • the electronic device 1400 of this embodiment can interact with the electronic device on the user equipment side described above with reference to FIGS. 2 to 12 and the electronic device capable of being used as a beacon tag device described with reference to FIG. All the functions and processing of the positioning tag device involved in ⁇ 2.
  • Configuration example of the electronic device used as the beacon tag device> and obtaining all the benefits are not here. Repeat the description again.
  • 15 is a schematic diagram showing an example of the information exchange process of an embodiment of the present disclosure, which schematically shows the user equipment UE, the beacon tag device Beacon Tag, and the location tag devices Tag1 and Tagn in the area where the Beacon Tag is located, and is omitted
  • the location tag devices Tag1,..., Tagn have different address codes.
  • step S1501 the user equipment UE sends the address code of the beacon tag device Beacon Tag to activate the Beacon Tag.
  • the tag configuration information is provided to the UE in step S1502.
  • the Beacon Tag can implement the above-mentioned providing steps, for example, by modulating and backscattering the radio frequency reference signal sent by the UE or other signal source.
  • the UE obtains the address codes and location information of the location tag devices Tag1,..., Tagn in the area where the Beacon Tag is located based on the obtained tag configuration information. For example, the UE may receive the address code and location information from the base station based on the tag configuration information, or may directly read the address code and location information from the tag configuration information when the tag configuration information contains relevant information.
  • step S1503-1 the UE sends the obtained address code of the positioning tag device Tag1 to activate Tag1.
  • Tag1 may reflect, for example, the radio frequency reference signal from the UE or other signal sources, so as to send the reflected reference signal to the UE in step S1504-1.
  • the UE can sequentially perform similar processing on the positioning tag devices Tag2,..., Tagn.
  • the UE completes the processing of S1503-n and step S1504-n, which are similar to steps S1503-1 and S1504-1, respectively, for Tagn, it can be performed based on the reflected reference signals received from each positioning tag device Tag1,..., Tagn Positioning processing.
  • the UE may calculate the RTT of each reflected reference signal and estimate the distance between the UE and the corresponding positioning tag device, thereby combining the position information of the positioning tag device to determine the location of the UE, for example, through a multipoint positioning method.
  • the example process shown in FIG. 15 can be used by the electronic device 200 on the user equipment side described above with reference to FIGS. 1 to 14, the electronic device 1300 that can be used as a beacon tag device, and the electronic device 1400 that can be used as a positioning tag device. Therefore, the advantages and benefits described in the configuration examples of the above various electronic devices can be obtained, and the description will not be expanded here.
  • the configuration example of the electronic device according to the embodiment of the present disclosure has been described above. Note that part or all of the content in this configuration example can be combined with each other to provide a corresponding positioning system. For example, it is possible to set up multiple beacon tag devices and positioning tag devices associated with each beacon tag device in the manner described above with reference to the example application scenario of FIG. In the base station where the user equipment interacts), a positioning system suitable for the user equipment is formed.
  • 16 is a flowchart showing a process example of a positioning method on the user equipment side according to an embodiment of the present disclosure.
  • the functional unit of the electronic device is realized.
  • step S1601 the address codes of multiple beacon tag devices are sent to sequentially activate the beacon tag devices near the electronic device.
  • step S1602 tag configuration information is obtained from each activated beacon tag device, and the address code of the positioning tag device in the area where the beacon tag device is located is obtained according to the tag configuration information.
  • step S1603 the obtained address code of each positioning tag device is sent to activate the corresponding positioning tag device.
  • step S1604 a reflected reference signal obtained by reflecting the radio frequency reference signal from each activated positioning tag device can be obtained, and the electronic device can be positioned by using the reflected reference signal.
  • the method for positioning may further include: pre-receiving the address codes of the plurality of beacon tag devices from the base station.
  • the tag configuration information obtained from the activation of the beacon tag device in step S1602 may include the number of the set of positioning tag devices in the area where the beacon tag device is located. At this time, the address code of each positioning tag device in the set may be received from the base station according to the serial number.
  • the tag configuration information obtained from the activation of the beacon tag device in step S1602 includes the address code of each positioning tag device in the area where the beacon tag device is located.
  • adjacent beacon tag devices in the plurality of beacon tag devices have different address codes.
  • at least two non-adjacent beacon label devices in the plurality of beacon label devices have the same address code.
  • the two adjacent activated beacon tag devices can be separated from each other. Obtain label configuration information related to the positioning label device.
  • multiple location tag devices in the area where one beacon tag device is located have different address codes, and in the method for location, the address codes of the multiple location tag devices are sent sequentially to activate sequentially The plurality of positioning label devices.
  • multiple positioning tag devices in the area where one beacon tag device is located have the same address code, and in the method for positioning, the same address code is sent at the same time to activate the multiple Locate the labeling device.
  • the plurality of positioning tag devices after optionally receiving activation respectively use different modulation frequencies and/or modulation pilot sequences to modulate the radio frequency reference signal and perform A plurality of said reflection reference signals obtained by reflection.
  • the method for positioning further includes: according to the tag configuration information obtained from the one beacon tag device, further obtaining the modulation frequency and/or the modulation frequency and/ Or the modulated pilot sequence.
  • the method for positioning further includes: further obtaining the time of each positioning tag device of the plurality of positioning tag devices according to the tag configuration information obtained from the one beacon tag device.
  • the method for positioning further includes: according to the tag configuration information obtained from each activated beacon tag device, also obtaining the location information of the positioning tag device in the area where the beacon tag device is located; using each activated beacon tag device; The arrival time of the reflected reference signal of the positioning tag device calculates the distance between the activated positioning tag device and the electronic device; and according to the position information of each activated positioning tag device and the relationship between each activated positioning tag device and the electronic device The distance between the two determines the location of the electronic device.
  • the method for positioning further includes: transmitting the radio frequency reference signal.
  • the multiple electronic devices may sequentially execute the above-mentioned method for positioning according to the scheduling of the base station, so as to activate the beacon tag device and the beacon tag device near each of the electronic devices in turn. Perform related processing.
  • a plurality of the electronic devices may each work in the D2D mode, and execute the above-mentioned positioning method sequentially through distributed scheduling, so as to sequentially activate the beacon tag device near each of the electronic devices and perform related deal with.
  • the subject that executes the above method may be the electronic device 200 (including the functional unit of the electronic device described with reference to FIG. 8) according to the embodiment of the present disclosure.
  • the embodiment of the present disclosure may be the electronic device 200 (including the functional unit of the electronic device described with reference to FIG. 8) according to the embodiment of the present disclosure.
  • Various aspects of the embodiments are applicable to this.
  • FIG. 17 is a flowchart showing a process example of a method for positioning on the side of a beacon tag device according to an embodiment of the present disclosure, which may be used as an electronic device 1300 described with reference to FIG. 13. accomplish.
  • step S1701 when the address code of the electronic device from the user equipment is received, the electronic device may enter the active state from the dormant state.
  • step S1702 tag configuration information is provided to the user equipment, so that the user equipment obtains the address code of the positioning tag device in the area where the electronic device is located according to the tag configuration information.
  • the current electronic device in the method for positioning and another electronic device adjacent to the electronic device may have different address codes.
  • the current electronic device in the method for positioning and another electronic device that is not adjacent to the electronic device may have the same address code.
  • the label configuration information provided in step S1702 may include the number of the set of positioning label devices in the area where the electronic device is located.
  • the label configuration information provided in step S1702 may include a different address code of each positioning label device in the area where the electronic device is located.
  • the label configuration information provided in step S1702 may include the same address code of each positioning label device in the area where the electronic device is located.
  • the tag configuration information further includes the modulation frequency, modulation pilot sequence, and/or reflection time related information of the positioning tag device in the area where the electronic device is located.
  • the modulation frequency-related information may indicate the offset between the modulation frequencies used when each positioning tag device in the area where the electronic device is to modulate the radio frequency reference signal received.
  • the modulated pilot sequence related information may indicate the modulated pilot sequence used when each positioning tag device in the area where the electronic device is to modulate the radio frequency reference signal received by each.
  • the reflection time-related information indicates the offset between the times at which each positioning tag device in the area where the electronic equipment is to reflect the radio frequency reference signal received.
  • the tag configuration information provided in step S1702 may also include location information of the positioning tag device in the area where the electronic device is located.
  • the subject that executes the above method may be the electronic device 1300 according to the embodiment of the present disclosure, and therefore, various aspects of the embodiment of the electronic device 1300 described above are applicable to this.
  • FIG. 18 is a flowchart showing a process example of a method for positioning on the side of a positioning tag device according to an embodiment of the present disclosure, which may be implemented by, for example, the electronic device 1400 described with reference to FIG. 14 that can be used as a positioning tag device.
  • step S1801 when the address code of the electronic device from the user equipment is received, the electronic device is caused to enter the active state from the dormant state.
  • step S1802 the received radio frequency reference signal is reflected for the user equipment to perform positioning based on the reflected reference signal.
  • a predetermined modulation frequency and/or modulation pilot sequence may be used to modulate and reflect the received radio frequency reference signal.
  • the received radio frequency reference signal may be reflected at a predetermined time.
  • the subject that executes the above method may be the electronic device 1400 according to the embodiment of the present disclosure, so the various aspects of the embodiment of the electronic device 1400 in the foregoing are applicable to this.
  • the technology of the present disclosure can be applied to various products.
  • the electronic device 200 on the user equipment side may be various user equipment, which may be implemented as a mobile terminal (such as a smart phone, a tablet personal computer (PC), a notebook PC, a portable game terminal, a portable/dongle type mobile router). And digital camera) or in-vehicle terminals (such as car navigation equipment).
  • the user equipment may also be implemented as a terminal (also referred to as a machine type communication (MTC) terminal) that performs machine-to-machine (M2M) communication.
  • the user equipment may be a wireless communication module (such as an integrated circuit module including a single chip) installed on each of the above-mentioned user equipment.
  • the electronic device 1300 that can be used as a beacon tag device and the electronic device 1400 that can be used as a positioning tag device may be implemented as a tag device such as a passive radio frequency identification (RFID) tag (Tag).
  • RFID radio frequency identification
  • the tag device is usually in a dormant state and does not emit a signal; it only backscatters the radio frequency signal from the signal source (also sometimes referred to as reflection in this article) to the reader after being awakened or activated. In the process of backscattering the radio frequency signal, the tag device changes the backscattered radio frequency signal according to the information to be transmitted by, for example, changing its antenna impedance, thereby realizing the modulation of the reflected radio frequency signal.
  • RFID radio frequency identification
  • FIG. 19 is a block diagram showing an example of a schematic configuration of a smart phone 2000 to which the technology of the present disclosure can be applied.
  • the smartphone 2000 includes a processor 2001, a memory 2002, a storage device 2003, an external connection interface 2004, a camera device 2006, a sensor 2007, a microphone 2008, an input device 2009, a display device 2010, a speaker 2011, a wireless communication interface 2012, one or more An antenna switch 2015, one or more antennas 2016, a bus 2017, a battery 2018, and an auxiliary controller 2019.
  • the processor 2001 may be, for example, a CPU or a system on a chip (SoC), and controls the functions of the application layer and other layers of the smart phone 2000.
  • the memory 2002 includes RAM and ROM, and stores data and programs executed by the processor 2001.
  • the storage device 2003 may include a storage medium such as a semiconductor memory and a hard disk.
  • the external connection interface 2004 is an interface for connecting an external device such as a memory card and a universal serial bus (USB) device to the smart phone 2000.
  • USB universal serial bus
  • the imaging device 2006 includes an image sensor such as a charge coupled device (CCD) and a complementary metal oxide semiconductor (CMOS), and generates a captured image.
  • the sensor 2007 may include a group of sensors, such as a measurement sensor, a gyroscope sensor, a geomagnetic sensor, and an acceleration sensor.
  • the microphone 2008 converts the sound input to the smart phone 2000 into an audio signal.
  • the input device 2009 includes, for example, a touch sensor, a keypad, a keyboard, a button, or a switch configured to detect a touch on the screen of the display device 2010, and receives an operation or information input from the user.
  • the display device 2010 includes a screen such as a liquid crystal display (LCD) and an organic light emitting diode (OLED) display, and displays the output image of the smartphone 2000.
  • the speaker 2011 converts the audio signal output from the smartphone 2000 into sound.
  • the wireless communication interface 2012 supports any cellular communication scheme (such as LTE and LTE-Advanced), and performs wireless communication.
  • the wireless communication interface 2012 may generally include, for example, a BB processor 2013 and an RF circuit 2014.
  • the BB processor 2013 may perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and perform various types of signal processing for wireless communication.
  • the RF circuit 2014 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via the antenna 2016.
  • the wireless communication interface 2012 may be a chip module on which the BB processor 2013 and the RF circuit 2014 are integrated. As shown in FIG.
  • the wireless communication interface 2012 may include a plurality of BB processors 2013 and a plurality of RF circuits 2014.
  • FIG. 19 shows an example in which the wireless communication interface 2012 includes a plurality of BB processors 2013 and a plurality of RF circuits 2014, the wireless communication interface 2012 may also include a single BB processor 2013 or a single RF circuit 2014.
  • the wireless communication interface 2012 may support another type of wireless communication scheme, such as a short-range wireless communication scheme, a near field communication scheme, and a wireless local area network (LAN) scheme.
  • the wireless communication interface 2012 may include a BB processor 2013 and an RF circuit 2014 for each wireless communication scheme.
  • Each of the antenna switches 2015 switches the connection destination of the antenna 916 among a plurality of circuits included in the wireless communication interface 2012 (for example, circuits for different wireless communication schemes).
  • Each of the antennas 2016 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna), and is used for the wireless communication interface 2012 to transmit and receive wireless signals.
  • the smart phone 2000 may include a plurality of antennas 2016.
  • FIG. 19 shows an example in which the smart phone 2000 includes a plurality of antennas 2016, the smart phone 2000 may also include a single antenna 2016.
  • the smart phone 2000 may include an antenna 2016 for each wireless communication scheme.
  • the antenna switch 2015 may be omitted from the configuration of the smart phone 2000.
  • the bus 2017 connects the processor 2001, the memory 2002, the storage device 2003, the external connection interface 2004, the camera device 2006, the sensor 2007, the microphone 2008, the input device 2009, the display device 2010, the speaker 2011, the wireless communication interface 2012, and the auxiliary controller 2019 to each other. connect.
  • the battery 2018 supplies power to each block of the smart phone 2000 shown in FIG. 19 via a feeder line, and the feeder line is partially shown as a dashed line in the figure.
  • the auxiliary controller 2019 operates the minimum necessary functions of the smartphone 2000 in the sleep mode, for example.
  • the transceiver 210 in the electronic device 200 previously described with reference to FIG. 2 may be implemented through the wireless communication interface 2012.
  • At least a part of the functions of the control unit 220 in the electronic device 200 may be implemented by the processor 2001 or the auxiliary controller 2019.
  • the processor 2001 or the auxiliary controller 2019 may execute at least a part of the functions of the control unit 220 by executing instructions stored in the memory 2002 or the storage device 2003, such as realizing positioning processing based on reflected reference signals.
  • the storage unit 230 in the electronic device 200 may be implemented by the memory 2002 or the storage device 2003.
  • FIG. 20 is a block diagram showing an example of a schematic configuration of a car navigation device 2120 to which the technology of the present disclosure can be applied.
  • the car navigation device 2120 includes a processor 2121, a memory 2122, a global positioning system (GPS) module 2124, a sensor 2125, a data interface 2126, a content player 2127, a storage medium interface 2128, an input device 2129, a display device 2130, a speaker 2131, a wireless A communication interface 2133, one or more antenna switches 2136, one or more antennas 2137, and a battery 2138.
  • GPS global positioning system
  • the processor 2121 may be, for example, a CPU or SoC, and controls the navigation function and other functions of the car navigation device 2120.
  • the memory 2122 includes RAM and ROM, and stores data and programs executed by the processor 2121.
  • the GPS module 2124 uses GPS signals received from GPS satellites to measure the position of the car navigation device 2120 (such as latitude, longitude, and altitude).
  • the sensor 2125 may include a group of sensors, such as a gyroscope sensor, a geomagnetic sensor, and an air pressure sensor.
  • the data interface 2126 is connected to, for example, an in-vehicle network 2141 via a terminal not shown, and acquires data (such as vehicle speed data) generated by the vehicle.
  • the content player 2127 reproduces content stored in a storage medium (such as CD and DVD), which is inserted into the storage medium interface 2128.
  • the input device 2129 includes, for example, a touch sensor, a button, or a switch configured to detect a touch on the screen of the display device 2130, and receives an operation or information input from the user.
  • the display device 2130 includes a screen such as an LCD or OLED display, and displays an image of a navigation function or reproduced content.
  • the speaker 2131 outputs the sound of the navigation function or the reproduced content.
  • the wireless communication interface 2133 supports any cellular communication scheme such as LTE and LTE-Advanced, and performs wireless communication.
  • the wireless communication interface 2133 may generally include, for example, a BB processor 2134 and an RF circuit 2135.
  • the BB processor 2134 may perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and perform various types of signal processing for wireless communication.
  • the RF circuit 2135 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via the antenna 2137.
  • the wireless communication interface 2133 can also be a chip module on which the BB processor 2134 and the RF circuit 2135 are integrated. As shown in FIG.
  • the wireless communication interface 2133 may include a plurality of BB processors 2134 and a plurality of RF circuits 2135.
  • FIG. 20 shows an example in which the wireless communication interface 2133 includes a plurality of BB processors 2134 and a plurality of RF circuits 2135, the wireless communication interface 2133 may also include a single BB processor 2134 or a single RF circuit 2135.
  • the wireless communication interface 2133 may support another type of wireless communication scheme, such as a short-range wireless communication scheme, a near field communication scheme, and a wireless LAN scheme.
  • the wireless communication interface 2133 may include a BB processor 2134 and an RF circuit 2135 for each wireless communication scheme.
  • Each of the antenna switches 2136 switches the connection destination of the antenna 2137 among a plurality of circuits included in the wireless communication interface 2133, such as circuits for different wireless communication schemes.
  • Each of the antennas 2137 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna), and is used for the wireless communication interface 2133 to transmit and receive wireless signals.
  • the car navigation device 2120 may include multiple antennas 2137.
  • FIG. 20 shows an example in which the car navigation device 2120 includes a plurality of antennas 2137, the car navigation device 2120 may also include a single antenna 2137.
  • the car navigation device 2120 may include an antenna 2137 for each wireless communication scheme.
  • the antenna switch 2136 may be omitted from the configuration of the car navigation device 2120.
  • the battery 2138 supplies power to each block of the car navigation device 2120 shown in FIG. 20 via a feeder line, and the feeder line is partially shown as a dashed line in the figure.
  • the battery 2138 accumulates electric power supplied from the vehicle.
  • the transceiver 210 in the electronic device 200 previously described with reference to FIG. 2 may be implemented through a wireless communication interface 2133.
  • At least a part of the functions of the control unit 220 in the electronic device 200 may be implemented by the processor 2121.
  • the processor 2121 may execute at least a part of the functions of the control unit 220 by executing instructions stored in the memory 2122, such as realizing positioning processing based on reflected reference signals.
  • the storage unit 230 in the electronic device 200 may be implemented by the memory 2122.
  • the technology of the present disclosure may also be implemented as an in-vehicle system (or vehicle) 2140 including one or more blocks in a car navigation device 2120, an in-vehicle network 2141, and a vehicle module 2142.
  • vehicle module 2142 generates vehicle data (such as vehicle speed, engine speed, and failure information), and outputs the generated data to the in-vehicle network 2141.
  • the units shown in dashed boxes in the functional block diagram shown in the drawings all indicate that the functional unit is optional in the corresponding device, and each optional functional unit can be combined in an appropriate manner to achieve the required function .
  • a plurality of functions included in one unit in the above embodiments may be realized by separate devices.
  • the multiple functions implemented by multiple units in the above embodiments may be implemented by separate devices, respectively.
  • one of the above functions can be implemented by multiple units. Needless to say, such a configuration is included in the technical scope of the present disclosure.
  • the steps described in the flowchart include not only processing performed in time series in the described order, but also processing performed in parallel or individually rather than necessarily in time series.
  • the order can be changed appropriately.
  • the present disclosure also proposes a program product storing machine-readable instruction codes.
  • the instruction code is read and executed by a machine, the above-mentioned method according to the embodiment of the present disclosure can be executed.
  • a storage medium for carrying the above-mentioned program product storing machine-readable instruction codes is also included in the disclosure of the present disclosure.
  • the storage medium includes, but is not limited to, a floppy disk, an optical disk, a magneto-optical disk, a memory card, a memory stick, and so on.
  • a program constituting the software is installed from a storage medium or a network to a computer having a dedicated hardware structure, and the computer can execute various functions and the like when various programs are installed.
  • the units shown in dashed boxes in the functional block diagram shown in the drawings all indicate that the functional unit is optional in the corresponding device, and each optional functional unit can be combined in an appropriate manner to achieve the required function .
  • a plurality of functions included in one unit in the above embodiments may be realized by separate devices.
  • the multiple functions implemented by multiple units in the above embodiments may be implemented by separate devices, respectively.
  • one of the above functions can be implemented by multiple units. Needless to say, such a configuration is included in the technical scope of the present disclosure.
  • the steps described in the flowchart include not only processing performed in time series in the described order, but also processing performed in parallel or individually rather than necessarily in time series.
  • the order can be changed appropriately.
  • the present disclosure may have a configuration as described below.
  • An electronic device including:
  • the processing circuit is configured as:
  • processing circuit is further configured to: receive the address code of each positioning tag device in the set from the base station according to the serial number.
  • the storage unit is configured to store the address codes of the plurality of beacon tag devices in advance.
  • processing circuit is further configured to: for the positioning tag device near the boundary of the area where two adjacent activation beacon tag devices are located, from the two Two adjacent activated beacon tag devices obtain tag configuration information related to the positioning tag device respectively.
  • processing circuit is further configured to: determine the location of each activated location tag device according to the location information of each activated location tag device and the distance between each activated location tag device and the electronic device. State the location of the electronic device.
  • An electronic device including:
  • the processing circuit is configured as:
  • tag configuration information further includes the modulation frequency, modulation pilot sequence, and/or reflection time related information of the positioning tag device in the area where the electronic device is located.
  • tag configuration information further includes location information of the positioning tag device in the area where the electronic device is located.
  • An electronic device including:
  • the processing circuit is configured as:
  • a method for positioning including:
  • a method for positioning including:
  • a method for positioning including:
  • a non-transitory computer-readable storage medium storing a program that, when executed by a processor, causes the processor to execute the method according to any one of (36) to (38) .

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Automation & Control Theory (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un dispositif électronique, un procédé de positionnement et un support de stockage non transitoire à lecture informatique. Le dispositif électronique comprend un circuit de traitement. Le circuit de traitement est conçu : pour envoyer des codes d'adresses d'une pluralité de dispositifs d'étiquettes de balises pour activer successivement ces derniers près d'un dispositif électronique (S1601) ; pour obtenir des informations de configuration d'étiquettes à partir de chaque dispositif d'étiquette de balise activé et pour obtenir des codes d'adresses de dispositifs d'étiquettes de positionnement dans une zone où se trouve le dispositif d'étiquette de balise, selon les informations de configuration d'étiquettes (S1602) ; pour envoyer le code d'adresse obtenu de chaque dispositif d'étiquette de positionnement, pour activer le dispositif correspondant (S1603) ; et pour obtenir un signal réfléchi de référence obtenu par chaque dispositif activé d'étiquette de positionnement, reflétant un signal de référence de radiofréquence, et pour positionner le dispositif électronique grâce au signal réfléchi de référence (S1604). Lorsque le dispositif électronique est dans un environnement exempt de ligne de visée directe vers une station de base, en intérieur par exemple, il peut également se positionner avec précision.
PCT/CN2021/083191 2020-04-02 2021-03-26 Dispositif électronique, procédé de positionnement et support de stockage non transitoire à lecture informatique WO2021197218A1 (fr)

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WO2024087046A1 (fr) * 2022-10-26 2024-05-02 Qualcomm Incorporated Conception de signal de référence pour dispositifs sans fil passifs

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CN116087875B (zh) * 2023-04-07 2023-06-30 电子科技大学(深圳)高等研究院 基于环境信息的室内非视距场景无源标签三维定位方法

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