WO2022143092A1 - Procédé et dispositif de positionnement, et support de stockage lisible par ordinateur - Google Patents

Procédé et dispositif de positionnement, et support de stockage lisible par ordinateur Download PDF

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Publication number
WO2022143092A1
WO2022143092A1 PCT/CN2021/136894 CN2021136894W WO2022143092A1 WO 2022143092 A1 WO2022143092 A1 WO 2022143092A1 CN 2021136894 W CN2021136894 W CN 2021136894W WO 2022143092 A1 WO2022143092 A1 WO 2022143092A1
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WIPO (PCT)
Prior art keywords
terminal
positioning reference
reference signal
base station
configuration information
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PCT/CN2021/136894
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English (en)
Chinese (zh)
Inventor
李健翔
赵亚利
全海洋
傅婧
王达
Original Assignee
大唐移动通信设备有限公司
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Publication of WO2022143092A1 publication Critical patent/WO2022143092A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • the present application relates to the field of communication technologies, and in particular, the present application relates to a positioning method, a device, and a computer-readable storage medium.
  • the 3GPP architecture does not consider a scenario in which a terminal accessing the base station under the coverage of the base station can also provide a positioning reference signal when data transmission is performed through a sidelink (direct communication link).
  • the positioning reference signals sent by the outdoor coverage base stations cannot meet the requirements of high-precision positioning. If the rate is not high enough, etc., the accuracy of the outdoor positioning results based on the cellular network will be greatly reduced.
  • the Sidelink scenario higher requirements are placed on the positioning accuracy. If the existing positioning architecture is used, the positioning accuracy requirements of Sidelink cannot be fully met.
  • the present application provides a positioning method, device, and computer-readable storage medium, which can solve the problem that the existing positioning framework cannot meet the positioning accuracy requirement in the Sidelink scenario.
  • the technical solution is as follows:
  • a positioning method executed by a base station, and the method includes:
  • configuration information is simultaneously sent to the located terminal and subordinate terminals, where the configuration information is used to instruct the terminal subordinate to the base station to send a positioning reference signal according to the configuration information, and to instruct the located terminal
  • the positioning terminal receives the positioning reference signal according to the configuration information, so as to locate the located terminal.
  • the sending configuration information to the located terminal and subordinate terminals simultaneously according to the first request includes:
  • the configured configuration information is sent to the located terminal and the terminal subordinate to the target base station at the same time.
  • the configuring corresponding configuration information for the subordinate terminal includes:
  • Corresponding configuration information is configured for the target terminal according to the feedback message reported by the target terminal that supports sending the positioning reference signal.
  • the feedback message includes at least one of the following parameter information of the positioning reference signal supported by the target terminal: bandwidth, frequency point information, and duration.
  • the method further includes:
  • the configuration information and the identification information of the corresponding terminal are sent to the core network device, so that the core network device can locate the located terminal.
  • the configuration information includes at least one of the following:
  • the transmission mode includes: periodic, semi-persistent, aperiodic;
  • the indication information of the time domain resources of the semi-persistent positioning reference signal which is used to indicate: the time point, duration, and interval period of the positioning reference signal to start sending, or, the time point to start sending, the time point to end sending, The interval period for sending;
  • the indication information of the time domain resource of the periodic positioning reference signal which is used to indicate: the transmission period of the positioning reference signal;
  • the indication information of the time domain resource of the aperiodic positioning reference signal is used to indicate: the time point when the positioning reference signal starts to be sent, the duration, and the time point when the transmission ends.
  • a positioning method executed by a base station, and the method includes:
  • the configuration information is sent to the located terminal, where the configuration information is used to instruct the located terminal to receive the positioning reference signal according to the configuration information, so as to be used for the positioning reference signal to the located terminal. Locate the terminal for positioning.
  • a positioning method executed by a core network device, the method includes:
  • the configuration information sends a positioning reference signal, and instructs the located terminal to receive the positioning reference signal according to the configuration information, so as to locate the located terminal.
  • the determining of the target base station according to the identification information of the located terminal carried in the first request includes:
  • the base station and the neighboring cell base stations of the base station are determined as the target base station.
  • the method further includes:
  • the measurement result includes: the arrival time difference between the positioning reference signals and the corresponding positioning reference signal ID;
  • the positioning reference signal ID corresponding to the measurement result and the identification information of the terminal determine the corresponding at least one terminal
  • the geographic location of the located terminal is determined according to the measurement result and the corresponding timestamp, as well as the geographic location information and the corresponding timestamp.
  • the obtaining the geographic location information and the corresponding timestamp reported by the at least one terminal includes;
  • the geographic location information and the corresponding timestamp of the at least one terminal are filtered out from the received geographic location information and the corresponding timestamp reported by the terminal;
  • the geographic location information and the corresponding timestamp reported by the at least one terminal are received.
  • the method further includes:
  • the configuration information includes at least one of the following:
  • the transmission mode includes: periodic, semi-persistent, aperiodic;
  • the indication information of the time domain resources of the semi-persistent positioning reference signal which is used to indicate: the time point, duration, and interval period of the positioning reference signal to start sending, or, the time point to start sending, the time point to end sending, The interval period for sending;
  • the indication information of the time domain resource of the periodic positioning reference signal which is used to indicate: the transmission period of the positioning reference signal;
  • the indication information of the time domain resource of the aperiodic positioning reference signal is used to indicate: the time point when the positioning reference signal starts to be sent, the duration, and the time point when the transmission ends.
  • a positioning method which is performed by a terminal to be positioned, and the method includes:
  • positioning reference signals sent by multiple transmitters, wherein the multiple transmitters include the target base station and terminals subordinate to the target base station;
  • the positioned terminal is positioned according to the positioning reference signal.
  • the performing positioning according to the positioning reference signal includes:
  • the geographic location is determined according to the arrival time difference and the corresponding timestamp, as well as the received geographic location information, speed information and corresponding timestamps from each transmitter of the core network device.
  • the method further includes:
  • Determining the geographic location according to the arrival time difference and the corresponding timestamp, and the received geographic location information, speed information and corresponding timestamps from the core network device and each transmitter including:
  • the geographic location is determined according to the arrival time difference, the geographic location information, speed information and the corresponding timestamp of each transmitting end, and the timestamp corresponding to the arrival time difference after calibration processing.
  • the acquiring calibration parameters includes:
  • the calibration parameter is determined from the first time stamp, the second time stamp and the third time stamp.
  • the geographic location is determined according to the arrival time difference and the corresponding timestamp, as well as the received geographic location information, speed information and corresponding timestamps from each transmitting end of the core network device. location, including:
  • the geographic location is determined according to the remaining arrival time difference and the corresponding timestamp, as well as the geographic location information of the corresponding transmitter and the corresponding timestamp.
  • the method further includes: reporting the geographic location to the core network device.
  • the performing positioning according to the positioning reference signal includes:
  • the measurement result and the corresponding time stamp reported to the core network device so that the core network device can determine the geographic location of the located terminal, wherein the measurement result includes: the time difference of arrival between the positioning reference signals and the corresponding positioning Reference Signal ID.
  • the configuration information includes at least one of the following:
  • the transmission mode includes: periodic, semi-persistent, aperiodic;
  • the indication information of the time domain resources of the semi-persistent positioning reference signal which is used to indicate: the time point, duration, and interval period of the positioning reference signal to start sending, or, the time point to start sending, the time point to end sending, The interval period for sending;
  • the indication information of the time domain resource of the periodic positioning reference signal which is used to indicate: the transmission period of the positioning reference signal;
  • the indication information of the time domain resource of the aperiodic positioning reference signal is used to indicate: the time point when the positioning reference signal starts to be sent, the duration, and the time point when the transmission ends.
  • a base station including:
  • a memory for storing a computer program
  • a transceiver for receiving a first request under the control of the processor, where the first request is used to request the location information of the located terminal; according to the first request, to the The located terminal and the terminal subordinate to the base station simultaneously send configuration information, where the configuration information is used to instruct the subordinate terminal to send a positioning reference signal according to the configuration information, and to instruct the located terminal to send a positioning reference signal according to the configuration information receiving the positioning reference signal for positioning the located terminal;
  • a processor for reading a computer program in the memory and executing control of the transceiver.
  • the processor is specifically configured to: configure corresponding configuration information for a terminal subordinate to the base station;
  • the transceiver is specifically configured to send the configured configuration information to the located terminal and the terminal subordinate to the base station at the same time.
  • the transceiver is specifically configured to send a second request to a terminal subordinate to the base station, where the second request is used to inquire whether the terminal supports sending a positioning reference signal;
  • the processor is specifically configured to configure corresponding configuration information for the target terminal according to the feedback message reported by the target terminal that supports sending the positioning reference signal.
  • a base station including:
  • a transceiver configured to send preset configuration information to a terminal subordinate to the base station under the control of the processor, where the configuration information is used to instruct the terminal subordinate to the base station to send a positioning reference signal according to the configuration information;
  • the configuration information is sent to the located terminal, where the configuration information is used to instruct the located terminal to receive the positioning reference signal according to the configuration information, so as to be used for the positioning reference signal to the located terminal.
  • a processor for reading a computer program in the memory and executing control of the transceiver.
  • a core network device including:
  • a transceiver configured to receive a first request under the control of the processor, where the first request is used to request location information of the located terminal;
  • a processor configured to read the computer program in the memory and execute the control of the transceiver, and determine a target base station according to the identification information of the located terminal carried in the first request received by the transceiver;
  • the transceiver is further configured to, under the control of the processor, send the first request to the target base station, so that the target base station sends configuration information to the located terminal and the terminals subordinate to the target base station, where
  • the configuration information is used to instruct the terminal under the target base station to send a positioning reference signal according to the configuration information, and to instruct the located terminal to receive the positioning reference signal according to the configuration information, so as to be used for the positioning reference signal.
  • the terminal is positioned.
  • the processor is specifically configured to: determine, according to the identification information of the located terminal, the base station to which the located terminal belongs; and determine the base station and the neighboring cell base stations of the base station as the target base station.
  • the transceiver is specifically configured to receive the configuration information sent by the target base station and the identification information of the corresponding terminal;
  • the measurement result includes: the arrival time difference between the positioning reference signals and the corresponding positioning reference signal ID;
  • the processor is specifically configured to, according to the positioning reference signal ID corresponding to the measurement result and the identification information of the terminal, determine at least one corresponding terminal;
  • the geographic location of the located terminal is determined according to the measurement result and the corresponding timestamp, as well as the geographic location information and the corresponding timestamp.
  • the transceiver is specifically configured to receive the geographic location reported by the located terminal, where the reported geographic location is obtained by the located terminal performing positioning according to the received positioning reference signal.
  • a terminal including:
  • a transceiver configured to receive configuration information sent by the target base station under the control of the processor
  • the processor is configured to read the computer program in the memory and execute the control of the transceiver, and perform positioning according to the positioning reference signal received by the transceiver.
  • the processor is specifically configured to: measure the time difference of arrival between the positioning reference signals sent by each transmitting end;
  • the geographic location is determined according to the arrival time difference and the corresponding timestamp, as well as the received geographic location information, speed information and corresponding timestamps from each transmitter of the core network device.
  • the time difference of arrival between the positioning reference signals sent by each transmitter is measured
  • the transceiver is further configured to report the measurement result and the corresponding time stamp to the core network device, so that the core network device can determine the geographic location of the located terminal, where the measurement result includes: the distance between the positioning reference signals. The arrival time difference and the corresponding positioning reference signal ID.
  • a base station including:
  • a receiving unit configured to receive a first request, where the first request is used to request location information of the located terminal
  • a sending unit configured to send configuration information to the located terminal and a terminal subordinate to the base station at the same time according to the first request, where the configuration information is used to instruct the terminal subordinate to the base station to send a positioning reference signal according to the configuration information , and instruct the located terminal to receive the positioning reference signal according to the configuration information, so as to locate the located terminal.
  • a tenth aspect provides a base station, including:
  • a sending unit configured to send preset configuration information to a terminal subordinate to the base station, where the configuration information is used to instruct the terminal subordinate to the base station to send a positioning reference signal according to the configuration information;
  • a receiving unit configured to receive a first request, where the first request is used to request location information of the located terminal
  • the sending unit is further configured to, according to the first request, send the configuration information to the located terminal, where the configuration information is used to instruct the located terminal to receive the positioning reference signal according to the configuration information , for locating the located terminal.
  • a core network device including:
  • a receiving unit configured to receive a first request, where the first request is used to request location information of the located terminal
  • a determining unit configured to determine a target base station according to the identification information of the located terminal carried in the first request
  • a sending unit configured to send the first request to the target base station, so that the target base station sends configuration information to the located terminal and terminals subordinate to the target base station, where the configuration information is used to indicate that the target base station is subordinate
  • the terminal of the device sends a positioning reference signal according to the configuration information, and instructs the located terminal to receive the positioning reference signal according to the configuration information, so as to locate the located terminal.
  • a twelfth aspect provides a terminal, including:
  • a receiving unit configured to receive configuration information sent by a target base station; receive positioning reference signals sent by multiple transmitters according to the configuration information, wherein the multiple transmitters include the target base station and terminals subordinate to the target base station ;
  • a positioning unit configured to perform positioning according to the positioning reference signal.
  • a thirteenth aspect provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, and the computer program is used to cause the processor to perform the positioning method shown in the first aspect corresponding to or, perform the operation corresponding to the positioning method shown in the second aspect, or, perform the operation corresponding to the positioning method shown in the third aspect, or perform the operation corresponding to the positioning method shown in the fourth aspect. .
  • Fig. 1 is the positioning frame diagram of the related art
  • Fig. 2 is the schematic diagram of Sidelink communication process in the related art
  • FIG. 3 is a schematic flowchart of a positioning method according to an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a positioning method provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a positioning method according to an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of a positioning method provided by an embodiment of the present application.
  • FIG. 7 is an interactive schematic diagram of a positioning method provided by another embodiment of the present application.
  • FIG. 8 is an interactive schematic diagram of a positioning method provided by another embodiment of the present application.
  • FIG. 9 is an interactive schematic diagram of a positioning method provided by another embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a base station according to an embodiment of the application.
  • FIG. 11 is a schematic structural diagram of a core network device according to an embodiment of the application.
  • FIG. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • the applicable system may be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) general packet Wireless service (general packet radio service, GPRS) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, Long term evolution advanced (LTE-A) system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G New Radio (New Radio, NR) system, etc.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA wideband Code Division Multiple Access
  • general packet Wireless service general packet Radio service
  • GPRS general packet Wireless service
  • LTE long term evolution
  • LTE frequency division duplex frequency division duplex
  • time division duplex time division duplex
  • TDD Time division duplex
  • the terminal device involved in the embodiments of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem.
  • the name of the terminal device may be different.
  • the terminal device may be called user equipment (User Equipment, UE).
  • Wireless terminal equipment can communicate with one or more core networks (Core Network, CN) via a radio access network (Radio Access Network, RAN).
  • RAN Radio Access Network
  • "telephone) and computers with mobile terminal equipment eg portable, pocket-sized, hand-held, computer-built or vehicle-mounted mobile devices, which exchange language and/or data with the radio access network.
  • Wireless terminal equipment may also be referred to as system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point , a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in the embodiments of the present application.
  • the network side device involved in the embodiments of the present application may be a base station, and the base station may include a plurality of cells providing services for the terminal.
  • the base station may also be called an access point, or may be a device in the access network that communicates with wireless terminal equipment through one or more sectors on the air interface, or other names.
  • the network-side equipment can be used to exchange received air frames with Internet Protocol (IP) packets, and act as a router between the wireless terminal equipment and the rest of the access network, where the rest of the access network can include Internet Protocol (IP) communication network.
  • IP Internet Protocol
  • the network side equipment can also coordinate the attribute management of the air interface.
  • the network-side device involved in the embodiments of the present application may be a network-side device (Base Transceiver Station) in a Global System for Mobile Communications (GSM) or a Code Division Multiple Access (Code Division Multiple Access, CDMA).
  • BTS Global System for Mobile Communications
  • BTS can also be a network side device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or it can be an evolution in a long term evolution (LTE) system type network side equipment (evolutional Node B, eNB or e-NodeB), 5G base station (gNB) in 5G network architecture (next generation system), or Home evolved Node B (HeNB), relay node (relay node), home base station (femto), pico base station (pico), etc., are not limited in the embodiments of this application.
  • the network-side device may include a centralized unit (centralized unit, CU) node and a distributed unit (distributed unit, DU) node, and the centralized unit and
  • One or more antennas can be used for multi-input multi-output (MIMO) transmission between the network-side device and the terminal device.
  • the MIMO transmission can be single-user MIMO (Single User MIMO, SU-MIMO) or multi-user MIMO.
  • MIMO Multiple User MIMO, MU-MIMO
  • MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or diversity transmission, precoding transmission, or beamforming transmission.
  • the core network device involved in the embodiments of the present application may be a location server (Location Management Function, LMF), which is a physical or logical entity that manages the location of a target device, that is, a wireless device to be located, and is located in an evolution service mobile location center (E -SMLC) control plane architecture, responsible for selecting the positioning method and triggering the corresponding positioning measurement, and can calculate the final result and accuracy of the positioning.
  • LMF Location Management Function
  • E -SMLC evolution service mobile location center
  • NG-RAN can send positioning reference signals, or perform positioning measurement based on assistance information
  • terminal equipment UE can send positioning reference signals, or based on assistance
  • the information can be used for positioning measurement, and the final result and accuracy of positioning can also be calculated based on the measurement results.
  • LTE Positioning Protocol includes the positioning methods supported by the target device, different aspects supported by a positioning method (such as supported assisted global navigation satellites) System A-GNSS assistance data type) and some common characteristics of positioning that are not limited to a certain positioning method (such as the ability to handle multiple LPP transactions).
  • the LPP location capability transfer transaction may be triggered by a server request, specifically: the server sends an LPP request capability message to request the relevant location capability of the target device; or, the target device "actively reports", specifically: the target device transmits the relevant location capability to the server. , to actively transmit capability information, which may include specific positioning methods and commonalities of some positioning methods.
  • the server can be an LMF in the 5G positioning architecture.
  • Direct communication refers to the way in which adjacent terminals can transmit data over a direct communication link (also known as Sidelink) within a short range.
  • the wireless interface corresponding to the Sidelink link is called the direct communication interface, also called the Sidelink interface, as shown in Figure 2.
  • the current 3GPP architecture does not consider a scenario in which a terminal accessing the base station under the coverage of the base station can also provide a positioning reference signal when data transmission is performed through a sidelink (direct communication link).
  • the positioning reference signals sent by the outdoor coverage base stations cannot meet the high-precision positioning requirements. If the rate is not high enough, etc., the accuracy of the outdoor positioning results based on the cellular network will be greatly reduced.
  • the Sidelink scenario higher requirements are placed on the positioning accuracy. If the existing positioning architecture is used, the positioning accuracy requirements of Sidelink cannot be fully met.
  • the positioning method, device and processor-readable storage medium provided by the present application aim to solve the above technical problems in the prior art.
  • the base station notifies the terminals within its jurisdiction through the Uu interface, and it can broadcast the PRS signal and its resource configuration on the PC5 interface.
  • the positioning method provided by the embodiments of the present application first selects suitable base stations through LMF, and then these base stations select suitable terminals within their jurisdiction to send positioning reference signals over the sidelink interface, which will improve network efficiency.
  • the embodiment of the present application provides a positioning method: not only the base station can send the positioning reference signal, but also the terminal connected to the base station under the coverage of the base station can also send the positioning reference signal through the PC5 interface, thereby improving the density of the positioning reference signal in the network and sending the positioning reference signal.
  • the geometric distribution of the signals is irrelevant, thereby improving the positioning accuracy of the located terminal, which in turn can meet the positioning accuracy requirements in the Sidelink scenario.
  • An embodiment of the present application provides a positioning method. As shown in FIG. 3 , the method 10 is executed by the base station, including:
  • the base station receives a first request, where the first request is used to request location information of the located terminal;
  • the base station sends, according to the first request, configuration information to the located terminal and a terminal subordinate to the base station at the same time, where the configuration information is used to instruct the terminal subordinate to the base station to send a positioning reference signal according to the configuration information, and Instructing the located terminal to receive the positioning reference signal according to the configuration information, so as to locate the located terminal.
  • the first request received by the base station may be a positioning service request from a core network device, for example, a positioning server LMF.
  • the configuration information may include, but is not limited to, at least one of the following:
  • the identification ID of each terminal that transmits the positioning reference signal is the identification ID of each terminal that transmits the positioning reference signal.
  • Transmission modes include: periodic, semi-persistent, and aperiodic.
  • the indication information of the time domain resources of the semi-persistent positioning reference signal which is used to indicate: the time point, duration, and interval period of the positioning reference signal to start sending, or, the time point to start sending, the time point to end sending, The interval period for sending.
  • the indication information of the time domain resource of the periodic positioning reference signal is used to indicate: the transmission period of the positioning reference signal.
  • the indication information of the time domain resource of the aperiodic positioning reference signal is used to indicate: the time point when the positioning reference signal starts to be sent, the duration, and the time point when the transmission ends.
  • the configuration information of the corresponding positioning reference signal is configured for the terminal subordinate to the determined target base station, and the target base station sends the configuration information to the determined terminal and the terminal to be located, and the terminal sends the corresponding configuration information according to the configuration information.
  • the positioning reference signal, the located terminal receives the corresponding positioning reference signal according to the configuration information. Therefore, not only the base station can send the positioning reference signal, but some terminals under the base station can also send the positioning reference signal through the PC5 interface, thereby improving the density of the positioning reference signal in the network and the irrelevance of the geometric distribution of the sent positioning signal, so that the positioning reference signal can be located.
  • the terminal can receive more positioning reference signals, thereby improving the positioning accuracy of the positioned terminal, and thus meeting the positioning accuracy requirements in the Sidelink scenario.
  • step 120 may include:
  • the base station configures corresponding configuration information for its subordinate terminals
  • the base station sends the configured configuration information to the located terminal and its subordinate terminals at the same time.
  • the base station after receiving a request sent by a core network device, for example, a positioning server LMF (for example, a positioning service request), the base station can configure the resources for sending positioning reference signals PRS to its subordinate terminals, which are
  • the resources configured by each terminal may be the same, and the configured resources include: time-domain, frequency-domain, and space-domain resources for transmitting PRS, and transmission modes, and so on.
  • the configured PRS resources are sent to the located terminal and the terminal under the base station, the terminal under the base station sends the positioning reference signal according to the received configuration resource, and the located terminal receives the positioning reference signal sent by the terminal under the base station according to the received configuration resource. signal to locate the terminal to be located.
  • step 122 may include:
  • Corresponding configuration information is configured for the target terminal according to the feedback message reported by the target terminal that supports sending the positioning reference signal.
  • the parameter information includes at least one of the following items: bandwidth, frequency, and duration of the positioning reference signal sent by the target terminal.
  • the terminals with the ability to send PRS can be screened out, and then configure them based on the specific capabilities of these terminals.
  • the corresponding PRS resource In order to improve the efficiency of sending the positioning reference signal PRS and avoid the waste of resources, before configuring the corresponding PRS resources for the terminals under the target base station, the terminals with the ability to send PRS can be screened out, and then configure them based on the specific capabilities of these terminals.
  • the corresponding PRS resource In order to improve the efficiency of sending the positioning reference signal PRS and avoid the waste of resources, before configuring the corresponding PRS resources for the terminals under the target base station, the terminals with the ability to send PRS can be screened out, and then configure them based on the specific capabilities of these terminals.
  • the corresponding PRS resource In order to improve the efficiency of sending the positioning reference signal PRS and avoid the waste of resources, before configuring the corresponding PRS resources for the terminals under the target base station, the terminals with the ability to send PRS can be screened out, and
  • the subordinate terminal supports sending positioning reference signals, screen out the terminals that support sending positioning reference signals, and send the identification IDs of these terminals to the located terminal, so that the located terminal can receive the information sent by the terminal corresponding to the identification ID according to the configuration information. Positioning reference signals, thereby avoiding waste of resources.
  • the terminal subordinate to the base station receives the inquiry request and finds that it can currently support the assisted sending of positioning signals, it will reply a positive response to the base station through a feedback message, and inform the supported sending of positioning reference signals. specific abilities. If the terminal does not currently support sending positioning signals, it will reply a negative reply to the base station through a feedback message, or not send a feedback message to the base station.
  • the embodiment of the present application also provides a positioning method 100. As shown in FIG. 4, the method 100 is performed by a base station, and the method 100 may include:
  • a base station sends preset configuration information to a subordinate terminal, where the configuration information is used to instruct the subordinate terminal to send a positioning reference signal according to the configuration information;
  • the base station receives a first request, where the first request is used to request location information of the located terminal;
  • the base station sends the configuration information to the located terminal according to the first request, where the configuration information is used to instruct the located terminal to receive the positioning reference signal according to the configuration information, so as to be used to locate the terminal.
  • the positioned terminal performs positioning.
  • the configuration information for sending PRS can be configured for the terminals of the whole network in advance, for example, the same PRS resources are configured for the terminals of the whole network, so that when the first request is received, the terminal can be motivated Send PRS in time.
  • the preset configuration information can be sent to the terminals of the whole network by means of a broadcast message.
  • the above positioning method 100 may further include:
  • the base station selects a terminal that supports sending positioning reference signals from its subordinate terminals;
  • step 104 may include:
  • the terminal that supports sending the positioning reference signal is selected from the subordinate terminals.
  • the subordinate terminal has the auxiliary positioning capability, from which the terminal that supports sending the positioning reference signal is screened, and the identification ID of this part of the terminal is sent to the located terminal, so that the located terminal can receive the positioning information sent by the terminal corresponding to the identification ID according to the configuration information. reference signal, thereby avoiding waste of resources.
  • the above-mentioned positioning method 10 and/or positioning method 100 may further include:
  • the base station after the base station sends the configuration information to the located terminal and its subordinate terminals, it also needs to send the configuration information and the identification information of the corresponding terminal to the core network equipment, which can facilitate the core network equipment to Locate the terminal for positioning.
  • an embodiment of the present application further provides a positioning method 20.
  • the method 20 is executed by the core network, for example, executed by the positioning server LMF, and the method includes:
  • the LMF Determine the target base station according to the identification information of the located terminal carried in the first request; specifically, in this embodiment, the first request received by the LMF may be a positioning service request from the positioning terminal.
  • the target base station sends configuration information to the located terminal and the terminals subordinate to the target base station, where the configuration information is used to instruct the terminals subordinate to the target base station according to
  • the configuration information sends a positioning reference signal, and instructs the located terminal to receive the positioning reference signal according to the configuration information, so as to locate the located terminal.
  • step 220 may include:
  • the core network device after the core network device receives a first request (for example, a positioning service request) sent by a positioning terminal (a positioning terminal is a terminal that requests the geographic location of the terminal to be positioned), it can base on the first request
  • a positioning terminal is a terminal that requests the geographic location of the terminal to be positioned
  • the identification information of the located terminal carried in the database, the base station to which the located terminal belongs is obtained by searching the database, the base station and the neighboring base stations of the base station are determined as the target base station, and then the first request is sent to the target base station, and then these target base stations themselves Select a suitable terminal within its jurisdiction to send a positioning signal on the sidelink port to improve network efficiency.
  • the above-mentioned method 20 may further include:
  • step 270 may include:
  • the identification information of the at least one terminal filter out the geographic location information and the corresponding timestamp of the at least one terminal from the received geographic location information and the corresponding timestamp reported by the terminal;
  • the LMF can determine the terminal corresponding to the positioning reference signal ID according to the identification information of the terminal and the positioning reference signal ID corresponding to the received measurement result, and then, according to the received positioning reference signal The arrival time difference and the corresponding time stamp, as well as the geographical location information of the determined terminal and the corresponding time stamp, obtain the geographical location of the located terminal.
  • the LMF can obtain the geographic location of the located terminal by using an existing calculation method, which is not repeated here for the sake of brevity of description.
  • the configuration information may include, but is not limited to, at least one of the following:
  • the identification ID of each terminal that transmits the positioning reference signal is the identification ID of each terminal that transmits the positioning reference signal.
  • Transmission modes include: periodic, semi-persistent, and aperiodic.
  • the indication information of the time domain resources of the semi-persistent positioning reference signal which is used to indicate: the time point, duration, and interval period of the positioning reference signal to start sending, or, the time point to start sending, the time point to end sending, The interval period for sending.
  • the indication information of the time domain resource of the periodic positioning reference signal is used to indicate: the transmission period of the positioning reference signal.
  • the indication information of the time domain resource of the aperiodic positioning reference signal is used to indicate: the time point when the positioning reference signal starts to transmit, the duration, and the time point when the transmission ends.
  • the LMF determines the target terminal based on the request, and then the target base station selects a suitable terminal within its jurisdiction to send the positioning reference signal on the sidelink interface, which can improve network efficiency.
  • the target base station and some of its subordinate terminals all send positioning reference signals, the density of positioning reference signals in the network and the irrelevance of the geometric distribution of the sent positioning signals can also be improved, thereby improving the positioning accuracy of the positioned terminal. In turn, it can meet the positioning accuracy requirements in Sidelink scenarios.
  • the base station that executes the positioning methods 10 and 100 in the foregoing embodiments is one of the target base stations determined in the positioning method 20 .
  • an embodiment of the present application also provides a positioning method 30.
  • the method 30 may be executed by the terminal to be positioned during the positioning process, and the method includes:
  • the configuration information may include, but is not limited to, at least one of the following:
  • the identification ID of each terminal that transmits the positioning reference signal is the identification ID of each terminal that transmits the positioning reference signal.
  • Transmission modes include: periodic, semi-persistent, and aperiodic.
  • the indication information of the time domain resources of the semi-persistent positioning reference signal which is used to indicate: the time point, duration, and interval period of the positioning reference signal to start sending, or, the time point to start sending, the time point to end sending, The interval period for sending.
  • the indication information of the time domain resource of the periodic positioning reference signal is used to indicate: the transmission period of the positioning reference signal.
  • the indication information of the time domain resource of the aperiodic positioning reference signal is used to indicate: the time point when the positioning reference signal starts to transmit, the duration, and the time point when the transmission ends.
  • the positioned terminal receives the PC5PRS configuration broadcast by the base station and learns the resource configuration for receiving PRS signals on the PC5 interface.
  • the positioning reference signal sent by the PC5 interface can receive more positioning reference signals, thereby improving the density of the positioning reference signals in the network and the irrelevance of the geometric distribution of the sent positioning signals, thereby improving the positioning accuracy of the located terminal. , which can meet the positioning accuracy requirements in Sidelink scenarios.
  • step 330 may include:
  • the terminal to be positioned may obtain the time difference of arrival between the positioning reference signals sent by each transmitter and the corresponding time stamp based on the measurement, and the received geographic location of each transmitter from the core network device information, speed information and corresponding time stamps to determine their geographic location, without sending the relevant information to the LMF, and the LFM will perform the positioning calculation.
  • step 330 may further include:
  • step 332 may include:
  • the geographic location is determined according to the arrival time difference, the geographic location information, speed information and the corresponding timestamp of each transmitting end, and the timestamp corresponding to the arrival time difference after calibration processing.
  • step 340 may include:
  • the calibration parameter is determined from the first time stamp, the second time stamp and the third time stamp.
  • two types of time differences that may exist need to be calibrated, one is brought about by the positioned terminal itself, for example: the time point at which the positioning reference signal sent by each transmitter is received and the time of positioning If there is a time difference between the calculated time points, the time point for positioning calculation needs to be corrected; the other type is caused by the network. For example, the time when each transmitter sends the positioning reference signal is not synchronized, which will cause each transmitter to send the reference signal. There is an error in the arrival time difference between the transmitted positioning reference signals, which also needs to be corrected.
  • step 332 may include:
  • the geographic location is determined according to the remaining arrival time difference and the corresponding timestamp, as well as the geographic location information of the corresponding transmitter and the corresponding timestamp.
  • the information corresponding to the mobile terminal (including: arrival time difference and corresponding timestamp, and geographic location information and corresponding timestamp) can be eliminated The way. Since the factors that will cause errors in the positioning results during the positioning calculation are removed, the positioning accuracy can be improved.
  • the obtained calibration can also be first determined. After the parameters are calibrated to the timestamps corresponding to the remaining arrival time differences, the location calculation is performed to obtain the geographic location of the located terminal. Doing so will make the final positioning result more accurate.
  • the positioning method 30 may further include:
  • step 330 may include:
  • the positioning method 40 includes the following steps:
  • the LMF receives a first request, for example, a request for a positioning service.
  • the LMF receives a first request from the positioning terminal, where the first request carries the identification information of the located terminal, and is used to request the location information of the located terminal, which may indicate that the located terminal is performing a positioning service, or may not instruct.
  • the positioning terminal is a terminal that requests the geographic location of the positioned terminal.
  • the LMF after the LMF receives the first request, it can select and set corresponding QoS indicator requirements according to the service type of the request, such as: positioning accuracy requirements and positioning integrity requirements, and so on.
  • the LMF determines the target base station according to the first request.
  • the base station to which the located terminal belongs may be determined according to the identification information of the located terminal carried in the first request; and then the base station and the neighboring cell base stations of the base station are determined as the the target base station.
  • the target base station configures corresponding configuration information for a subordinate terminal.
  • the same configuration information can be configured for the subordinate terminals, for example, the same PRS resources are given to each terminal, that is, the time domain, frequency domain, and space domain resources for each target terminal to send PRS can be the same .
  • the target base station may also screen its subordinate terminals, for example, screening out terminals capable of sending PRS to send PRS.
  • the method may include the following steps:
  • the LMF sends a first request to the determined target base station.
  • the target base station In response to the first request, the target base station sends a second request to its subordinate terminals, where the second request is used to inquire whether each of its subordinate terminals supports sending positioning reference signals.
  • the target base station receives a feedback message sent by a terminal that supports sending positioning reference signals, and selects a target terminal that supports sending positioning reference signals from its subordinate terminals according to the identification information of the terminal carried in the feedback message.
  • step 430 can be:
  • the target base station configures corresponding configuration information for the target terminal according to the parameter information of the positioning reference signal sent by the target terminal carried in the feedback message.
  • the parameter information includes at least one of the following: bandwidth, frequency, and duration of the positioning reference signal sent by the target terminal.
  • Each target terminal feeds back at least one parameter of the bandwidth, frequency, and duration of the positioning reference signal sent by itself.
  • the parameters of the positioning reference signal are configured with corresponding configuration information.
  • the target base station sends the configured configuration information to the located terminal and subordinate terminals.
  • the same configuration information configured for each terminal will be sent; if the terminals under the target base station have been screened to obtain the target terminal, the corresponding configuration information configured for each target terminal will be sent. corresponding configuration information.
  • the target base station may also send configuration information and identification information of the corresponding terminal to the LMF, so that the LMF performs positioning calculation based on these data.
  • the terminal subordinate to the target base station sends the PRS at the corresponding resource location indicated by the configuration information.
  • the located terminal receives the PRS sent by the target terminal at the corresponding resource position indicated by the configuration information, and measures the time difference of arrival and the corresponding time stamp between the positioning reference signals sent by each transmitter.
  • the transmitting end includes a target base station and a terminal subordinate to the target base station.
  • the process of sending the positioning reference signal by the base station can be implemented by using the existing process, and for the sake of brevity of description, no corresponding description is made in this embodiment of the present application.
  • the located terminal sends a measurement result to the LMF through LPP signaling, where the measurement result includes: a time difference of arrival between positioning reference signals and a corresponding positioning reference signal ID.
  • the transmitter includes the target base station 1 and its subordinate terminals 2, 3, 4, and 5, wherein 1, 2, 3, 4, and 5 are the identifiers of the corresponding transmitter, respectively.
  • the time difference of arrival between the positioning reference signals sent by each transmitter and the corresponding ID of the positioning reference signal are shown in Table 1 below.
  • the LMF receives the geographic location information and the corresponding timestamp reported by the terminal subordinate to the target base station.
  • the LMF can determine the terminal (referred to as: the first terminal) corresponding to the positioning reference signal ID according to the received identification information of the terminal and the received positioning reference signal ID corresponding to the measurement result.
  • the corresponding positioning reference signal IDs are 1 and 3, so that the corresponding target base station 1 and its subordinate terminal 3 are determined.
  • the geographic location information and the corresponding timestamp of the first terminal are screened out from the received geographic location information and the corresponding timestamp automatically reported by the terminal. It should be noted that, in this case, the specific time when the LMF receives the geographic location information and the corresponding timestamp reported by the terminal is not limited by whether the first terminal is determined. Therefore, the execution of step 480 is not limited to the order of step numbering, which is merely an example.
  • a third request may be actively sent to the first terminal to request geographic location information of the first terminal, and then the geographic location information and the corresponding timestamp reported by the first terminal are received. It should be noted that, in this case, in order to accurately obtain the required relevant information of the target terminal, after the first terminal is determined, it is necessary to actively request the corresponding geographic location information and the corresponding time stamp from the first terminal.
  • the LMF determines the geographic location of the located terminal based on the received measurement result and the reported information.
  • the LMF determines the geographic location of the located terminal according to the arrival time difference between the received positioning reference signals and the corresponding timestamp, as well as the geographic location information of the first terminal and the corresponding timestamp.
  • the LMF can obtain the geographic location of the located terminal by using an existing calculation method, which is not repeated here for the sake of brevity of description.
  • FIG. 8 a data/signaling interaction process diagram of a positioning method provided by another embodiment of the present application is shown.
  • the positioning method 50 is different from the positioning method 40 in the embodiment shown in FIG. 7 in that:
  • the positioned terminal receives the PRS sent by the terminal at the corresponding resource position indicated by the configuration information, and obtains the time difference of arrival between the positioning reference signals sent by each transmitter and the corresponding time stamp after measuring, Instead of sending the measurement results to the LMF, the LMF performs positioning calculation to determine the position of the positioned terminal, but receives information from the LFM, and then performs positioning by itself in combination with the information measured by itself.
  • the specific implementation process of steps 510 to 560 included in the positioning method 50 shown in FIG. 8 is similar to the specific implementation process of steps 410 to 460 included in the positioning method 40 shown in FIG. 7 , for the sake of brevity of description , and will not be repeated here. The differences between the two embodiments will be described in detail below.
  • the method 50 includes:
  • the LMF receives the geographic location information, the speed information, and the corresponding timestamp reported by the terminal under the target base station, and sends the reported information to the located terminal.
  • step 570 is not limited to the sequence of step numbers, and this is just an example.
  • the terminal to be positioned obtains the time difference of arrival and the corresponding time stamp between the positioning reference signals sent by each transmitter according to the measurement, and the received geographic location information, speed information and corresponding time stamp of each transmitter from the LFM, Determine geographic location.
  • the information used to determine the geographic location can be processed in the following two ways.
  • the first way is: according to the speed information of each transmitter and/or the geographical position information of each transmitter at the adjacent time, determine the mobile transmitter, and then remove the arrival time difference corresponding to the mobile transmitter from the arrival time difference , and then determine the geographic location according to the remaining arrival time difference and the corresponding timestamp, as well as the geographic location information of the corresponding transmitter and the corresponding timestamp.
  • the second method is to perform calibration processing on the timestamp corresponding to the arrival time difference according to the obtained calibration parameters, and then, according to the arrival time difference, the geographic location information, speed information and corresponding timestamp of each transmitter, and the arrival time difference after calibration processing. Corresponding timestamp to determine geographic location.
  • the calibration parameter can be obtained by obtaining the first time stamp when each transmitter sends the positioning reference signal, the second time stamp when each transmitter sends the positioning reference signal, and the third time when the positioned terminal performs positioning calculation. Stamp; according to the first time stamp, the second time stamp and the third time stamp, the calibration parameter is determined.
  • two types of time differences that may exist need to be calibrated, one is brought by the terminal being located itself, for example: the time point when the positioning reference signal sent by each transmitter is received and the positioning If there is a time difference between the calculated time points, the time point for positioning calculation needs to be corrected; the other type is caused by the network.
  • the time when each transmitter sends the positioning reference signal is not synchronized, which will cause each transmitter to send the reference signal. There is an error in the arrival time difference between the transmitted positioning reference signals, which also needs to be corrected.
  • the above-mentioned first method may be used to eliminate the information corresponding to the moving terminal, and then the positioning calculation is performed.
  • the located terminal sends the obtained geographic location to the LMF.
  • the positioning method 60 includes the following steps:
  • the target base station sends preset configuration information to its subordinate terminals by means of a broadcast message.
  • Step 600 may be included before step 610, in which the target base station configures in advance configuration information for sending positioning reference information to its subordinate terminals. Since it is not certain which terminals have the ability to send PRS and which terminals do not have the ability to send PRS, and it is also uncertain what the specific capabilities of the terminals with the ability to send PRS have, the same PRS resources can be configured for their subordinate terminals, that is, : The time domain, frequency domain, and space domain resources for sending PRS by each terminal may be the same.
  • the specific configuration of the PRS resources needs to be performed according to the resources in the positioning reference signal resource pool of the base station.
  • the LMF receives the first request (for example, a request for a positioning service).
  • the LMF receives a request from the positioning terminal, the request carries the identification information of the located terminal, and is used to request the location information of the located terminal, which may indicate that the located terminal is performing a positioning service, or may not indicate.
  • the LMF can select and set corresponding QoS indicator requirements according to the service type of the first request, such as: positioning accuracy requirements and positioning integrity requirements, and so on.
  • the LMF determines the target base station according to the first request.
  • the LMF sends a first request to the determined target base station.
  • the target base station In response to the first request, the target base station sends a second request to its subordinate terminals, where the second request is used to inquire whether each of its subordinate terminals supports sending positioning reference signals.
  • the target base station receives a feedback message sent by a target terminal that supports sending positioning reference signals, and selects a target terminal that supports sending positioning reference signals from its subordinate terminals according to the identification information of the target terminal carried in the feedback message.
  • the target base station sends the identification ID of the target terminal that supports sending the positioning reference signal to the located terminal.
  • the target terminal sends the PRS at the corresponding resource location indicated by the configuration information.
  • the located terminal receives the PRS sent by the target terminal at the corresponding resource location indicated by the configuration information. And measure the time difference of arrival between the positioning reference signals sent by each transmitter and the corresponding time stamp.
  • the transmitting end includes the target terminal and the base station to which the target terminal belongs.
  • the located terminal receives the PRS sent by the target terminal at the corresponding resource position indicated by the configuration information according to the received configuration information, and measures the difference between the positioning reference signals sent by each transmitter. After the arrival time difference and the corresponding time stamp, to determine the location of the terminal to be located, two ways can be used.
  • One way is to send the measurement result to the LMF, and the LMF performs positioning calculation to determine the position of the positioned terminal.
  • the LMF performs positioning calculation to determine the position of the positioned terminal.
  • the terminal to be positioned receives the information from the LFM, and performs positioning by itself in combination with the information measured by itself.
  • the terminal to be positioned receives the information from the LFM, and performs positioning by itself in combination with the information measured by itself.
  • steps 570 to 590 included in the positioning method 50 shown in FIG. 8 which will not be repeated here for the sake of brevity of description.
  • the base station 70 includes: a memory 701 , a transceiver 702 and a processor 703 .
  • the memory 701 is used to store computer programs.
  • the transceiver 702 is configured to: receive a first request under the control of the processor 703, where the first request is used to request the location information of the located terminal;
  • the terminal subordinate to the base station sends configuration information at the same time, the configuration information is used to instruct the subordinate terminal to send the positioning reference signal according to the configuration information, and to instruct the located terminal to receive the positioning reference signal according to the configuration information. , for locating the located terminal.
  • the processor 703 is used to read the computer program in the memory 701 and execute the control of the transceiver.
  • the processor is specifically configured to: configure corresponding configuration information for a terminal subordinate to the base station.
  • the transceiver is specifically configured to send the configured configuration information to the located terminal and the terminal subordinate to the base station at the same time.
  • the transceiver is specifically configured to send a second request to a terminal subordinate to the base station, where the second request is used to inquire whether the terminal supports sending a positioning reference signal.
  • the processor is specifically configured to configure corresponding configuration information for the target terminal according to the feedback message reported by the target terminal that supports sending the positioning reference signal.
  • an embodiment of the present application further provides a base station, where the base station includes: a memory, a transceiver, and a processor.
  • Memory is used to store computer programs.
  • the transceiver is configured to: send preset configuration information to a terminal subordinate to the base station under the control of the processor, where the configuration information is used to instruct the terminal subordinate to the base station to send a positioning reference signal according to the configuration information; receive a first request , the first request is used to request the location information of the located terminal; according to the first request, the configuration information is sent to the located terminal, where the configuration information is used to instruct the located terminal according to the The configuration information receives the positioning reference signal for positioning the located terminal.
  • a processor is used to read a computer program in the memory and perform control of the transceiver.
  • the core network device 80 includes: a memory 801 , a transceiver 802 and a processor 803 .
  • the memory 801 is used to store computer programs.
  • the transceiver 802 is configured to receive a first request under the control of the processor 803, where the first request is used to request location information of the located terminal.
  • the processor 803 is configured to read the computer program in the memory 801 and execute the control of the transceiver, and determine the target base station according to the identification information of the located terminal carried in the first request received by the transceiver .
  • the transceiver is further configured to send the first request to the target base station under the control of the processor, so that the target base station sends configuration information to the located terminal and the terminals subordinate to the target base station, the The configuration information is used to instruct the terminal under the target base station to send a positioning reference signal according to the configuration information, and to instruct the located terminal to receive the positioning reference signal according to the configuration information, so as to be used for the positioning reference signal to the located terminal to locate.
  • the processor is specifically configured to: determine the base station to which the located terminal belongs according to the identification information of the located terminal; determine the base station and the neighboring cell base stations of the base station as the base station target base station.
  • the transceiver is specifically configured to: receive the configuration information sent by the target base station and the identification information of the corresponding terminal; receive the measurement result and the corresponding timestamp reported by the located terminal, the measurement The result includes: the arrival time difference between the positioning reference signals and the corresponding positioning reference signal ID.
  • the processor is specifically configured to: determine the corresponding at least one terminal according to the positioning reference signal ID corresponding to the measurement result and the identification information of the terminal; obtain the geographic location information and the corresponding timestamp reported by the at least one terminal ; Determine the geographic location of the located terminal according to the measurement result and the corresponding timestamp, as well as the geographic location information and the corresponding timestamp.
  • the transceiver is specifically configured to receive a geographic location reported by the located terminal, where the reported geographic location is obtained by the located terminal performing positioning according to the received positioning reference signal.
  • the bus architecture in FIGS. 10 and 11 may include any number of interconnected buses and bridges, specifically represented by one or more processors represented by processors 703 or 803 and memories 701 or 801
  • the various circuits of the memory are linked together.
  • the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein.
  • the bus interface provides the interface.
  • Transceiver 702 or 802 may be multiple elements, ie, including transmitters and receivers, providing means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like.
  • the processor 703 or 803 is responsible for managing the bus architecture and general processing, and the memory 701 or 801 may store data used by the processor 703 or 803 when performing operations.
  • the processor 703 or 803 may be a central processor (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or a complex programmable logic device (Complex Programmable). Logic Device, CPLD), the processor can also adopt a multi-core architecture.
  • CPU central processor
  • ASIC application specific integrated circuit
  • FPGA field-programmable gate array
  • CPLD complex programmable logic device
  • the terminal 90 includes a memory 901 , a transceiver 902 , a processor 903 and a user interface 904 .
  • the memory 901 is used to store computer programs.
  • the transceiver 902 is configured to receive configuration information sent by a target base station under the control of the processor 903; and receive positioning reference signals sent by multiple transmitters according to the configuration information, wherein the multiple transmitters include the target A base station and a terminal subordinate to the target base station.
  • the processor 903 is configured to read the computer program in the memory 901 and control the transceiver, and perform positioning according to the positioning reference signal received by the transceiver.
  • the processor is specifically configured to: measure the time difference of arrival between the positioning reference signals sent by each transmitting end; The geographic location information, speed information and corresponding time stamps of each transmitter of the device are used to determine the geographic location.
  • the processor is specifically configured to: measure the time difference of arrival between the positioning reference signals sent by each transmitting end.
  • the transceiver is further configured to report the measurement result and the corresponding time stamp to the core network device, so that the core network device can determine the geographic location of the located terminal, where the measurement result includes: the difference between the positioning reference signals. Arrival time difference and corresponding positioning reference signal ID.
  • the bus architecture in FIG. 12 may include any number of interconnected buses and bridges, specifically various circuit links of one or more processors represented by processor 903 and memory represented by memory 901 together.
  • the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein.
  • the bus interface provides the interface.
  • Transceiver 902 may be multiple elements, ie, including transmitters and receivers, providing means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like.
  • the user interface 904 may also be an interface capable of externally connecting the required equipment, and the connected equipment includes but is not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 903 is responsible for managing the bus architecture and general processing.
  • Memory 902 may store data used by processor 903 in performing operations.
  • the processor 903 may be a CPU (central processor), an ASIC (Application Specific Integrated Circuit, an application-specific integrated circuit), an FPGA (Field-Programmable Gate Array, a field programmable gate array) or a CPLD (Complex Programmable Logic Device) , complex programmable logic devices), the processor can also use a multi-core architecture.
  • CPU central processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array
  • CPLD Complex Programmable Logic Device
  • complex programmable logic devices complex programmable logic devices
  • the processor is configured to execute any one of the methods provided in the embodiments of the present application according to the obtained executable instructions by invoking the computer program stored in the memory.
  • the processor and memory may also be physically separated.
  • an embodiment of the present application further provides a base station, where the base station includes: a receiving unit and a sending unit.
  • the receiving unit is configured to receive a first request, where the first request is used to request location information of the located terminal.
  • the sending unit is configured to send configuration information to the located terminal and the terminal subordinate to the base station at the same time according to the first request, where the configuration information is used to instruct the terminal subordinate to the base station to send a positioning reference signal according to the configuration information, and to indicate The located terminal receives the positioning reference signal according to the configuration information, so as to locate the located terminal.
  • the base station further includes a processing unit configured to configure corresponding configuration information for a terminal subordinate to the base station.
  • the sending unit is configured to send the configured configuration information to the located terminal and the terminal subordinate to the base station at the same time.
  • the processing unit is specifically configured to send a second request to a terminal subordinate to the base station, where the second request is used to inquire whether the terminal supports sending the positioning reference signal; according to the target of supporting the sending of the positioning reference signal
  • the feedback message reported by the terminal configures corresponding configuration information for the target terminal.
  • the feedback message includes at least one of the following parameter information of the positioning reference signal supported by the target terminal: bandwidth, frequency point information, and duration.
  • the sending unit is further configured to send the configuration information and the identification information of the corresponding terminal to the core network device, so that the core network device can locate the located terminal.
  • the configuration information may include, but is not limited to, at least one of the following:
  • the identification ID of each terminal that transmits the positioning reference signal is the identification ID of each terminal that transmits the positioning reference signal.
  • Transmission modes include: periodic, semi-persistent, and aperiodic.
  • the indication information of the time domain resources of the semi-persistent positioning reference signal which is used to indicate: the time point, duration, and interval period of the positioning reference signal to start sending, or, the time point to start sending, the time point to end sending, The interval period for sending.
  • the indication information of the time domain resource of the periodic positioning reference signal is used to indicate: the transmission period of the positioning reference signal.
  • the indication information of the time domain resource of the aperiodic positioning reference signal is used to indicate: the time point when the positioning reference signal starts to be sent, the duration, and the time point when the transmission ends.
  • an embodiment of the present application further provides a base station, where the base station includes: a sending unit and a receiving unit.
  • the sending unit is configured to send preset configuration information to a terminal subordinate to the base station, where the configuration information is used to instruct the terminal subordinate to the base station to send a positioning reference signal according to the configuration information.
  • the receiving unit is configured to receive a first request, where the first request is used to request location information of the located terminal.
  • the sending unit is further configured to send the configuration information to the located terminal according to the first request, where the configuration information is used to instruct the located terminal to receive the positioning reference signal according to the configuration information, for locating the located terminal.
  • the base station further includes a processing unit configured to screen out the terminals that support sending the positioning reference signal from the terminals subordinate to the base station.
  • the sending unit is specifically configured to send the identification ID of the terminal that supports sending positioning reference signals to the located terminal, so that the located terminal receives the positioning reference signal sent by the terminal corresponding to the identification ID according to the configuration information.
  • the sending unit is specifically configured to send a second request to the subordinate terminal, where the second request is used to inquire whether the subordinate terminal supports sending the positioning reference signal.
  • the processing unit is specifically configured to, according to the identification information of the terminal carried in the received feedback message, screen out the terminal that supports sending the positioning reference signal from the subordinate terminals.
  • an embodiment of the present application further provides a core network device, where the core network device includes: a receiving unit, a determining unit, and a sending unit.
  • the receiving unit is configured to receive a first request, where the first request is used to request location information of the located terminal.
  • the determining unit is configured to determine the target base station according to the identification information of the located terminal carried in the first request.
  • the sending unit is configured to send the first request to the target base station, so that the target base station sends configuration information to the located terminal and the terminals subordinate to the target base station, where the configuration information is used to indicate the target base station's subordinate terminals.
  • the terminal sends a positioning reference signal according to the configuration information, and instructs the located terminal to receive the positioning reference signal according to the configuration information, so as to locate the located terminal.
  • the determining unit is specifically configured to: determine the base station to which the located terminal belongs according to the identification information of the located terminal; and determine the base station and the neighboring cell base stations of the base station as the the target base station.
  • the core network device further includes a receiving unit, configured to receive the configuration information sent by the target base station and the identification information of the corresponding terminal; receive the measurement result and the corresponding timestamp reported by the located terminal,
  • the measurement result includes: the arrival time difference between the positioning reference signals and the corresponding positioning reference signal ID.
  • the determining unit is further configured to: determine the corresponding at least one terminal according to the positioning reference signal ID corresponding to the measurement result and the identification information of the terminal; obtain the geographic location information and the corresponding time stamp reported by the at least one terminal; The measurement result and the corresponding timestamp, as well as the geographic location information and the corresponding timestamp, determine the geographic location of the located terminal.
  • the processing unit is specifically configured to, according to the identification information of the at least one terminal, filter out the location information of the at least one terminal from the received geographic location information reported by the terminal and the corresponding timestamp. Geolocation information and corresponding timestamp.
  • the sending unit is specifically configured to send a third request to the at least one terminal, where the third request is used to request geographic location information of the at least one terminal.
  • the receiving unit is specifically configured to receive the geographic location information and the corresponding timestamp reported by the at least one terminal.
  • the receiving unit is further configured to receive a geographic location reported by the located terminal, where the reported geographic location is obtained by performing positioning by the located terminal according to the received positioning reference signal.
  • the configuration information may include, but is not limited to, at least one of the following:
  • the identification ID of each terminal that transmits the positioning reference signal is the identification ID of each terminal that transmits the positioning reference signal.
  • Transmission modes include: periodic, semi-persistent, and aperiodic.
  • the indication information of the time domain resources of the semi-persistent positioning reference signal which is used to indicate: the time point, duration, and interval period of the positioning reference signal to start sending, or, the time point to start sending, the time point to end sending, The interval period for sending.
  • the indication information of the time domain resource of the periodic positioning reference signal is used to indicate: the transmission period of the positioning reference signal.
  • the indication information of the time domain resource of the aperiodic positioning reference signal is used to indicate: the time point when the positioning reference signal starts to be sent, the duration, and the time point when the transmission ends.
  • an embodiment of the present application also provides a terminal, where the terminal includes: a receiving unit and a positioning unit.
  • the receiving unit is configured to receive configuration information sent by a target base station; and receive positioning reference signals sent by multiple transmitters according to the configuration information, wherein the multiple transmitters include the target base station and terminals subordinate to the target base station.
  • the positioning unit is configured to locate the located terminal according to the positioning reference signal.
  • the positioning unit is specifically configured to: measure the time difference of arrival between the positioning reference signals sent by each transmitting end; The geographic location information, speed information and corresponding time stamp of each transmitter determine the geographic location.
  • the positioning unit is specifically configured to: perform calibration processing on the timestamp corresponding to the time of arrival difference according to the obtained calibration parameter; and the corresponding time stamp, and the time stamp corresponding to the time-of-arrival difference after calibration processing, to determine the geographic location.
  • the calibration parameter may be determined based on the first time stamp when each transmitter sends the positioning reference signal, the second time stamp when each transmitter sends the positioning reference signal, and the third time stamp when the positioned terminal performs positioning calculation. get.
  • the positioning unit is specifically used for:
  • the geographic location is determined according to the remaining arrival time difference and the corresponding timestamp, as well as the geographic location information of the corresponding transmitter and the corresponding timestamp.
  • the core network device further includes a sending unit configured to report the geographic location to the core network device.
  • the positioning unit is specifically configured to measure the time difference of arrival between the positioning reference signals sent by each transmitting end.
  • the sending unit is further configured to report the measurement result and the corresponding time stamp to the core network device, so that the core network device can determine the geographic location of the located terminal, where the measurement result includes: a positioning reference signal Arrival time difference and the corresponding positioning reference signal ID.
  • the configuration information may include, but is not limited to, at least one of the following:
  • the identification ID of each terminal that transmits the positioning reference signal is the identification ID of each terminal that transmits the positioning reference signal.
  • Transmission modes include: periodic, semi-persistent, and aperiodic.
  • the indication information of the time domain resources of the semi-persistent positioning reference signal which is used to indicate: the time point, duration, and interval period of the positioning reference signal to start sending, or, the time point to start sending, the time point to end sending, The interval period for sending.
  • the indication information of the time domain resource of the periodic positioning reference signal is used to indicate: the transmission period of the positioning reference signal.
  • the indication information of the time domain resource of the aperiodic positioning reference signal is used to indicate: the time point when the positioning reference signal starts to be sent, the duration, and the time point when the transmission ends.
  • an embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when it runs on a computer, the computer can execute the foregoing positioning method 100, or the positioning method 100, or the positioning method 20, or the corresponding content in the embodiment corresponding to the positioning method 30.
  • the positioning method provided by the embodiments of the present application can enable the terminal to also assist in sending a positioning reference assistance signal when the prior art means cannot support the positioning of the terminal in the Sidelink scenario, thereby improving the Sidelink scenario.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a processor-readable storage medium.
  • the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, and the computer software products are stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .
  • the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media having computer-usable program code embodied therein, including but not limited to disk storage, optical storage, and the like.
  • processor-executable instructions may also be stored in a processor-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the processor-readable memory result in the manufacture of means including the instructions product, the instruction means implements the functions specified in the flow or flow of the flowchart and/or the block or blocks of the block diagram.
  • processor-executable instructions can also be loaded onto a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process that Execution of the instructions provides steps for implementing the functions specified in the flowchart or blocks and/or the block or blocks of the block diagrams.

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

Abstract

Les modes de réalisation de la présente invention se rapportent au domaine technique des communications et concernent un procédé et un dispositif de positionnement ainsi qu'un support de stockage lisible par ordinateur. Le procédé comprend les étapes suivantes : réception d'une première demande, la première demande étant utilisée pour demander des informations d'emplacement d'un terminal à positionner ; et envoi simultané, selon la première demande, d'informations de configuration au terminal à positionner et à un terminal subordonné à une station de base, les informations de configuration étant utilisées pour ordonner au terminal subordonné à la station de base d'envoyer un signal de référence de positionnement selon les informations de configuration, et ordonner au terminal d'être positionné pour recevoir le signal de référence de positionnement conformément aux informations de configuration, de façon à positionner le terminal à positionner.
PCT/CN2021/136894 2020-12-31 2021-12-09 Procédé et dispositif de positionnement, et support de stockage lisible par ordinateur WO2022143092A1 (fr)

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