WO2022001858A1 - 定位方法及装置 - Google Patents

定位方法及装置 Download PDF

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Publication number
WO2022001858A1
WO2022001858A1 PCT/CN2021/102302 CN2021102302W WO2022001858A1 WO 2022001858 A1 WO2022001858 A1 WO 2022001858A1 CN 2021102302 W CN2021102302 W CN 2021102302W WO 2022001858 A1 WO2022001858 A1 WO 2022001858A1
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WO
WIPO (PCT)
Prior art keywords
information
positioning
downlink
uplink
terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2021/102302
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English (en)
French (fr)
Inventor
任斌
达人
任晓涛
赵铮
李刚
李辉
张振宇
方荣一
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Datang Mobile Communications Equipment Co Ltd filed Critical Datang Mobile Communications Equipment Co Ltd
Priority to KR1020237002652A priority Critical patent/KR20230028487A/ko
Priority to JP2022581613A priority patent/JP7524368B2/ja
Priority to US18/012,829 priority patent/US20230262647A1/en
Priority to EP21832245.1A priority patent/EP4175375A4/en
Publication of WO2022001858A1 publication Critical patent/WO2022001858A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/0009—Transmission of position information to remote stations
    • G01S5/0018—Transmission from mobile station to base station
    • G01S5/0036—Transmission from mobile station to base station of measured values, i.e. measurement on mobile and position calculation on base station
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0205—Details
    • G01S5/021—Calibration, monitoring or correction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0205—Details
    • G01S5/0236—Assistance data, e.g. base station almanac
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/06—Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/10—Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements, e.g. omega or decca systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/025—Services making use of location information using location based information parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/0015—Synchronization between nodes one node acting as a reference for the others
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0205—Details
    • G01S5/0244—Accuracy or reliability of position solution or of measurements contributing thereto

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a positioning method and device.
  • the 3rd Generation Partnership Project (3GPP) defines a variety of user equipment (User Equipment, UE) positioning methods by measuring the own positioning reference signal (Positioning Reference Signal, PRS) of the 3GPP wireless communication system, such as: Downlink Time Difference Of Arrival (DL-TDOA), Uplink Time Difference Of Arrival (UL-TDOA) and so on.
  • PRS Positioning Reference Signal
  • DL-TDOA Downlink Time Difference Of Arrival
  • UL-TDOA Uplink Time Difference Of Arrival
  • the characteristics of these methods are that they are based on the PRS positioning of the wireless communication system itself, and can work in an environment where positioning reference signals outside the network cannot be received.
  • the embodiments of the present application provide a positioning method and apparatus, so as to eliminate the clock deviation between base stations and improve the UE positioning accuracy of the UL-TDOA/DL-TDOA positioning technical solution.
  • a positioning method provided by an embodiment of the present application includes:
  • LMF Location Management Function
  • the uplink positioning reference signal is sent based on the positioning reference signal configuration information, and the location information of the reference terminal is sent, so that the LMF entity is based on the uplink positioning reference signal and the position of the reference terminal. information to locate the target terminal.
  • the downlink positioning reference signals from different base stations are received and measured based on the positioning reference signal configuration information, the downlink positioning measurement quantity information is determined, and the downlink positioning measurement quantity is reported information and the location information of the reference terminal;
  • the uplink positioning reference signal is sent based on the positioning reference signal configuration information, and the position information of the reference terminal is sent, so that the LMF entity can report based on the reference UE.
  • the downlink positioning measurement amount information includes: a downlink positioning measurement amount and/or a reliability indication of the downlink positioning measurement amount, wherein the reliability indication is a standard deviation sum of the error estimation value of the downlink positioning measurement amount. /or variance, used to indicate the reliability of downlink positioning measurements.
  • the location information of the reference terminal is determined by the reference terminal based on pre-configured location information or through an independent radio access technology RAT-independent positioning scheme.
  • the positioning reference signal configuration information is provided by the LMF entity or the base station.
  • a positioning method provided in this embodiment of the present application includes:
  • the downlink positioning measurement information reported by the reference terminal and the location information of the reference terminal are received, and the downlink positioning measurement information reported by the target terminal is received; based on the downlink positioning measurement information reported by the reference terminal Positioning measurement amount information and position information of the reference terminal, and downlink positioning measurement amount information reported by the target terminal, to locate the target terminal; and/or
  • the location information of the reference terminal reported by the reference terminal is received, and the uplink positioning measurement quantity information of the reference terminal reported by the base station and the uplink positioning measurement quantity information of the target terminal reported by the base station are received. ; Locating the target terminal based on the uplink positioning measurement information of the reference terminal, the position information of the reference terminal, and the uplink positioning measurement information of the target terminal.
  • the positioning of the target terminal based on the downlink positioning measurement information reported by the reference terminal and the location information of the reference terminal, and the downlink positioning measurement information reported by the target terminal includes:
  • the location information of the target terminal is determined according to the revised downlink positioning measurement quantity information of the target terminal.
  • the target terminal is located based on the uplink positioning measurement information about the reference terminal and the position information of the reference terminal reported by the base station, and the uplink positioning measurement information about the target terminal reported by the base station, include:
  • the location information of the target terminal is determined according to the corrected uplink positioning measurement quantity information of the target terminal.
  • the revised downlink positioning measurement amount information includes: a downlink reference signal time difference (Reference Signal Time Difference, RSTD) measurement value.
  • RSTD Reference Signal Time Difference
  • the method before acquiring the location information and downlink positioning measurement amount information of the reference terminal, the method further includes:
  • the downlink positioning measurement amount information of the target terminal is modified according to the clock deviation, and the corrected downlink positioning measurement amount information about the target terminal is determined, which specifically includes:
  • the base station notifying the base station of the clock deviation, so that after calibrating the clock deviation between base stations, the base station sends a downlink positioning reference signal to the target terminal or receives a downlink sounding reference signal from the target terminal; the downlink RSTD reported by the target terminal is based on the target terminal.
  • the difference between the reported downlink arrival times (Time of Arrival, TOA) from multiple base stations is directly assigned to the revised RSTD;
  • the difference between the RSTD value reported by the target terminal and the clock deviation is used as the corrected downlink positioning measurement quantity information.
  • the revised uplink positioning measurement amount information includes an uplink relative time of arrival (Relative Time Of Arrival, RTOA) measurement value.
  • RTOA Relative Time Of Arrival
  • the method before acquiring the location information and uplink positioning measurement amount information of the reference terminal, the method further includes:
  • modifying the uplink positioning measurement amount information of the target terminal according to the clock deviation, and determining the corrected uplink positioning measurement amount information about the target terminal specifically including:
  • the base station receives the uplink sounding reference signal from the target terminal; the uplink RTOA reported by the base station is directly assigned to the revised RTOA;
  • the difference between the uplink RTOA value reported by the base station about the target terminal and the clock deviation is used as the corrected uplink positioning measurement quantity information.
  • a positioning method provided by an embodiment of the present application includes:
  • the downlink time difference of arrival DL-TDOA positioning technical solution receive and measure downlink positioning reference signals from different base stations based on the positioning reference signal configuration information, determine downlink positioning measurement information, and report the downlink positioning measurement information; and/ or
  • the uplink positioning reference signal is sent based on the positioning reference signal configuration information.
  • the downlink positioning measurement amount information includes: a downlink positioning measurement amount and/or a reliability indication of the downlink positioning measurement amount, wherein the reliability indication is a standard deviation sum of the error estimation value of the downlink positioning measurement amount. /or variance, used to indicate the reliability of downlink positioning measurements.
  • the positioning reference signal configuration information is provided by the location management function LMF entity or the base station.
  • a positioning method provided by an embodiment of the present application includes:
  • the method further includes:
  • the uplink positioning reference signal sent by the target terminal is received and measured to obtain the uplink positioning measurement information of the target terminal, and the uplink positioning measurement information of the target terminal is reported to the LMF entity.
  • a positioning device provided by an embodiment of the present application includes:
  • the processor is used for calling the program instructions stored in the memory, and executes according to the obtained program:
  • the downlink time difference of arrival DL-TDOA positioning technical solution receive and measure downlink positioning reference signals from different base stations based on positioning reference signal configuration information, determine downlink positioning measurement information, and report the downlink positioning measurement information and the reference terminal. location information, so that the LMF entity locates the target terminal based on the downlink positioning measurement information and the location information of the reference terminal; and/or
  • the uplink positioning reference signal is sent based on the positioning reference signal configuration information, and the location information of the reference terminal is sent, so that the LMF entity is based on the uplink positioning reference signal and the position of the reference terminal. information to locate the target terminal.
  • the downlink positioning measurement amount information includes: a downlink positioning measurement amount and/or a reliability indication of the downlink positioning measurement amount, wherein the reliability indication is a standard deviation sum of the error estimation value of the downlink positioning measurement amount. /or variance, used to indicate the reliability of downlink positioning measurements.
  • the location information of the reference terminal is determined by the reference terminal based on pre-configured location information or through an independent radio access technology RAT-independent positioning scheme.
  • the positioning reference signal configuration information is provided by the location management function LMF entity or the base station.
  • a positioning device provided in this embodiment of the present application includes:
  • the processor is used for calling the program instructions stored in the memory, and executes according to the obtained program:
  • the downlink positioning measurement information reported by the reference terminal and the location information of the reference terminal are received, and the downlink positioning measurement information reported by the target terminal is received; based on the downlink positioning measurement information reported by the reference terminal Positioning measurement amount information and position information of the reference terminal, and downlink positioning measurement amount information reported by the target terminal, to locate the target terminal; and/or
  • the location information of the reference terminal reported by the reference terminal is received, and the uplink positioning measurement information of the reference terminal reported by the base station and the uplink positioning measurement information of the target terminal reported by the base station are received. ; Locating the target terminal based on the uplink positioning measurement information of the reference terminal, the position information of the reference terminal, and the uplink positioning measurement information of the target terminal.
  • the target terminal is located, and the processor is specifically configured to call the target terminal.
  • the program instructions stored in the memory are executed according to the obtained program:
  • the location information of the target terminal is determined according to the revised downlink positioning measurement quantity information of the target terminal.
  • the processor is specifically configured to call the memory.
  • the program instructions stored in are executed according to the obtained program:
  • the location information of the target terminal is determined according to the corrected uplink positioning measurement quantity information of the target terminal.
  • the modified downlink positioning measurement quantity information includes: downlink reference signal time difference RSTD measurement value.
  • the processor is further configured to call the program instructions stored in the memory, and execute according to the acquired program:
  • the processor is specifically configured to:
  • the base station notifying the base station of the clock deviation, so that after calibrating the clock deviation between base stations, the base station sends a downlink positioning reference signal to the target terminal or receives a downlink sounding reference signal from the target terminal; RSTD reported by the target terminal or based on the target terminal is reported. The difference between the downlink arrival times TOA from multiple base stations is directly assigned to the revised RSTD;
  • the difference between the RSTD value reported by the target terminal and the clock deviation is used as the corrected downlink positioning measurement quantity information.
  • the revised uplink positioning measurement quantity information includes an uplink relative time of arrival RTOA measurement value.
  • the processor is further configured to call the program instructions stored in the memory, and execute according to the obtained program:
  • the processor is specifically configured to call the memory.
  • the program instructions stored in are executed according to the obtained program:
  • the base station receives the uplink sounding reference signal from the target terminal; the uplink RTOA reported by the base station is directly assigned to the revised RTOA;
  • the difference between the uplink RTOA value reported by the base station about the target terminal and the clock deviation is used as the corrected uplink positioning measurement quantity information.
  • a positioning device provided by an embodiment of the present application includes:
  • the processor is used for calling the program instructions stored in the memory, and executes according to the obtained program:
  • the downlink time difference of arrival DL-TDOA positioning technical solution receive and measure downlink positioning reference signals from different base stations based on the positioning reference signal configuration information, determine downlink positioning measurement information, and report the downlink positioning measurement information; and/ or
  • the uplink positioning reference signal is sent based on the positioning reference signal configuration information.
  • the downlink positioning measurement amount information includes: a downlink positioning measurement amount and/or a reliability indication of the downlink positioning measurement amount, wherein the reliability indication is a standard deviation sum of the error estimation value of the downlink positioning measurement amount. /or variance, used to indicate the reliability of downlink positioning measurements.
  • the positioning reference signal configuration information is provided by the location management function LMF entity or the base station.
  • the processor is further configured to call the program instructions stored in the memory, and execute according to the obtained program:
  • a positioning device provided by an embodiment of the present application includes:
  • the processor is used for calling the program instructions stored in the memory, and executes according to the obtained program:
  • the processor is further configured to call the program instructions stored in the memory, and execute according to the obtained program:
  • the uplink positioning reference signal sent by the target terminal is received and measured to obtain the uplink positioning measurement information of the target terminal, and the uplink positioning measurement information of the target terminal is reported to the LMF entity.
  • another positioning device provided by this embodiment of the present application includes:
  • a configuration information determining unit configured to determine positioning reference signal configuration information
  • the first downlink unit is configured to receive and measure downlink positioning reference signals from different base stations based on the positioning reference signal configuration information for the downlink time difference of arrival DL-TDOA positioning technical solution, determine downlink positioning measurement amount information, and report the Downlink positioning measurement information and location information of the reference terminal, so that the LMF locates the target terminal based on the downlink positioning measurement information and the location information of the reference terminal; and/or
  • the first uplink unit is configured to send an uplink positioning reference signal based on the positioning reference signal configuration information for the UL-TDOA positioning technical solution of the uplink time difference of arrival, and send the position information of the reference terminal, so that the LMF is based on the uplink positioning reference signal and the position information.
  • the location information of the reference terminal is used to locate the target terminal.
  • the downlink positioning measurement amount information includes: a downlink positioning measurement amount and/or a reliability indication of the downlink positioning measurement amount, wherein the reliability indication is a standard deviation sum of the error estimation value of the downlink positioning measurement amount. /or variance, used to indicate the reliability of downlink positioning measurements.
  • the location information of the reference terminal is determined by the reference terminal based on pre-configured location information or through an independent radio access technology RAT-independent positioning scheme.
  • the positioning reference signal configuration information is provided by the LMF entity or the base station.
  • another positioning device provided by this embodiment of the present application includes:
  • the first downlink processing unit is configured to receive the downlink positioning measurement amount information reported by the reference terminal and the position information of the reference terminal for the downlink time difference of arrival DL-TDOA positioning technical solution, and receive the downlink positioning measurement amount information reported by the target terminal ; Based on the downlink positioning measurement amount information reported by the reference terminal and the position information of the reference terminal, and the downlink positioning measurement amount information reported by the target terminal, the target terminal is positioned; and/or
  • the first uplink processing unit is configured to, for the uplink time difference of arrival UL-TDOA positioning technical solution, receive the location information of the reference terminal reported by the reference terminal, and receive the uplink positioning measurement quantity information of the reference terminal reported by the base station, and the information reported by the base station.
  • the uplink positioning measurement information of the target terminal; the target terminal is positioned based on the uplink positioning measurement information of the reference terminal, the location information of the reference terminal, and the uplink positioning measurement information of the target terminal.
  • the first downlink processing unit is specifically configured to:
  • the location information of the target terminal is determined according to the revised downlink positioning measurement quantity information of the target terminal.
  • the first uplink processing unit is specifically used for:
  • the location information of the target terminal is determined according to the corrected uplink positioning measurement quantity information of the target terminal.
  • the revised downlink positioning measurement amount information includes: downlink reference signal time difference RSTD measurement value.
  • the first sending unit before acquiring the location information and positioning measurement quantity information of the reference terminal, the first sending unit is used for:
  • the first downlink processing unit is specifically configured to:
  • the clock deviation is notified to the base station, so that after the base station calibrates the clock deviation between the base stations, it sends a downlink positioning reference signal to the target terminal; the RSTD reported by the target terminal or the RSTD reported by the target terminal from multiple The difference between the downlink TOA of the base station is directly assigned to the revised RSTD;
  • the RSTD value reported by the target terminal or the difference between the base station and the clock deviation is used as the corrected downlink positioning measurement quantity information.
  • the revised uplink positioning measurement quantity information includes an uplink relative time of arrival RTOA measurement value.
  • the second sending unit Before acquiring the location information and uplink positioning measurement quantity information of the reference terminal, the second sending unit is used for:
  • the first uplink processing unit is specifically used for:
  • the base station receives the uplink sounding reference signal from the target terminal; the uplink RTOA reported by the base station is directly assigned to the revised RTOA;
  • the difference between the uplink RTOA value reported by the base station about the target terminal and the clock deviation is used as the corrected uplink positioning measurement quantity information.
  • another positioning device provided by this embodiment of the present application includes:
  • a configuration information determining unit configured to determine positioning reference signal configuration information
  • the second downlink unit is configured to receive and measure downlink positioning reference signals from different base stations based on the positioning reference signal configuration information for the downlink time difference of arrival DL-TDOA positioning technical solution, determine downlink positioning measurement amount information, and report the downlink positioning reference signal location measurement information; and/or
  • the second uplink unit is configured to send an uplink positioning reference signal based on the positioning reference signal configuration information for the uplink time difference of arrival UL-TDOA positioning technical solution.
  • the downlink positioning measurement amount information includes: a downlink positioning measurement amount and/or a reliability indication of the downlink positioning measurement amount, wherein the reliability indication is a standard deviation sum of the error estimation value of the downlink positioning measurement amount. /or variance, used to indicate the reliability of downlink positioning measurements.
  • the positioning reference signal configuration information is provided by the location management function LMF entity or the base station.
  • another positioning apparatus provided by this embodiment of the present application includes:
  • a configuration information sending unit configured to send positioning reference signal configuration information to the terminal
  • the second downlink processing unit is configured to send a downlink positioning reference signal to the reference terminal according to the downlink time difference of arrival DL-TDOA positioning technical solution, receive the downlink positioning measurement quantity information and the position information of the reference terminal reported by the reference terminal, and forward it to the reference terminal.
  • LMF entity and/or
  • the second uplink processing unit is configured to receive and measure the uplink positioning reference signal sent by the reference terminal according to the UL-TDOA positioning technical scheme to obtain uplink positioning measurement information, and report the uplink positioning measurement to the LMF entity information, and forwards the location information of the reference terminal reported by the reference terminal.
  • a calibration unit is also included:
  • the calibration unit configured to calibrate the clock deviation of the local base station according to the clock deviation
  • the second downlink processing unit is specifically configured to send a downlink positioning reference signal to the target terminal according to the downlink time difference of arrival DL-TDOA positioning technical solution, receive the downlink positioning measurement quantity information reported by the target terminal, and forward it to the location Management function LMF entity;
  • the second uplink processing unit is specifically configured to receive and measure the uplink positioning reference signal sent by the target terminal for the uplink time difference of arrival UL-TDOA positioning technical solution to obtain the uplink positioning measurement amount information of the target terminal, and send the information to the target terminal.
  • the LMF entity reports the uplink positioning measurement information of the target terminal.
  • Another embodiment of the present application provides a computing device, which includes a memory and a processor, wherein the memory is used for storing program instructions, and the processor is used for calling the program instructions stored in the memory, according to the obtained program Perform any of the above methods.
  • Another embodiment of the present application provides a computer storage medium, where the computer storage medium stores computer-executable instructions, where the computer-executable instructions are used to cause the computer to execute any one of the above methods.
  • FIG. 1 is a schematic diagram of signal interaction among a base station, a terminal, and an LMF entity according to an embodiment of the present application;
  • FIG. 2 is another schematic diagram of signal interaction between a base station, a terminal, and an LMF entity according to an embodiment of the present application;
  • FIG. 3 is a schematic diagram of a third type of signal interaction between a base station, a terminal, and an LMF entity according to an embodiment of the present application;
  • FIG. 4 is a schematic flowchart of a positioning method on a reference terminal side provided by an embodiment of the present application
  • FIG. 5 is a schematic flowchart of a positioning method on the LMF entity side provided by an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of a positioning method on a target terminal side provided by an embodiment of the present application.
  • FIG. 7 is a schematic flowchart of a positioning method on a base station side provided by an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a positioning apparatus on a terminal side provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a positioning apparatus on the network side provided by an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a positioning apparatus on a reference terminal side provided by an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a positioning device on the LMF entity side provided by an embodiment of the application.
  • FIG. 12 is a schematic structural diagram of a positioning apparatus on a target terminal side provided by an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a positioning apparatus on the base station side according to an embodiment of the present application.
  • the clock deviation (ie time synchronization error) between base stations is one of the key issues that directly affects the positioning performance.
  • the embodiments of the present application provide a positioning method and apparatus, so as to eliminate the clock deviation between base stations based on the reference UE, and improve the UE positioning accuracy of the UL-TDOA/DL-TDOA positioning technical solution.
  • the embodiments of the present application provide a positioning method and apparatus, so as to eliminate the clock deviation between base stations and improve the UE positioning accuracy of the UL-TDOA/DL-TDOA positioning technical solution.
  • the method and the device are conceived based on the same application. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and repeated descriptions will not be repeated here.
  • applicable systems may be global system of mobile communication (GSM) system, code division multiple access (CDMA) system, 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), general Mobile system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G system and 5G 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 Radio service
  • LTE long term evolution
  • LTE frequency division duplex frequency division duplex
  • FDD frequency division duplex
  • TDD time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave
  • 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 equipment may be different.
  • the terminal equipment can be called user equipment.
  • Wireless terminal equipment can communicate with one or more core networks via a Radio Access Network (RAN).
  • the wireless terminal equipment can be mobile terminal equipment, such as mobile phones (or "cellular" phones) and mobile
  • the computer of the device for example, may be a portable, pocket-sized, hand-held, computer-built-in or vehicle-mounted mobile device that exchanges language and/or data with the wireless 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 device involved in the embodiments of the present application may be a base station, and the base station may include multiple cells.
  • the base station may also be called an access point, or may refer to a device in the access network that communicates with wireless terminal devices through one or more sectors on the air interface, or other names.
  • the network device can be used to convert received air frames to and from internet protocol (IP) packets and act as a router between the wireless end device and the rest of the access network, which can include the Internet. Protocol (IP) communication network.
  • IP internet protocol
  • the network devices may also coordinate attribute management for the air interface.
  • the network device involved in the embodiments of the present application may be a global system for mobile communications (GSM) or a network device (base transceiver station, BTS) in code division multiple access (code division multiple access, CDMA). ), it can also be a network device (NodeB) in wide-band code division multiple access (WCDMA), or it can be an evolved network device in a long term evolution (LTE) system (evolutional node B, eNB or e-NodeB), 5G base station in 5G network architecture (next generation system), home evolved node B (HeNB), relay node (relay node), home base station ( femto), pico base station (pico), etc., which are not limited in the embodiments of the present application.
  • GSM global system for mobile communications
  • BTS base transceiver station
  • CDMA code division multiple access
  • NodeB wide-band code division multiple access
  • LTE long term evolution
  • 5G base station in 5G network architecture next generation system
  • HeNB home evolved
  • the PRS described in the embodiments of the present application represents all reference signals that can be used to measure TOA, for example, it includes PRS that can be used for traditional DL-TDOA/UL-TDOA positioning, Channel State Indication Reference Signal Reference Signal (CSI-RS), System Synchronization/Physical Broadcast Channel Block (SS/PBCH Block, System Synchronization/Physical Broadcast CHannel Block), Sounding Reference Signal (Sounding Reference Signal, SRS) and Physical Random Access Channel (Physical Random Access) CHannel, PRACH) and so on.
  • CSI-RS Channel State Indication Reference Signal Reference Signal
  • SS/PBCH Block System Synchronization/Physical Broadcast Channel Block
  • SRS Sounding Reference Signal
  • Physical Random Access Channel Physical Random Access Channel
  • PRACH Physical Random Access Channel
  • the reference UE first calculates the UE position based on the pre-configured UE position or through the assisted global navigation satellite positioning system (Assisted-Global Navigation Satellite System, A-GNSS) and other independent radio access technology (RAT-independent) positioning technology solutions, and then is divided into Two cases are handled:
  • assisted-Global Navigation Satellite System A-GNSS
  • RAT-independent independent radio access technology
  • the UE For the DL-TDOA positioning technical solution, refer to the UE to receive and measure downlink positioning reference signals (PRS) from different base stations to obtain downlink positioning measurement information (including but not limited to: downlink RSTD measurement value, downlink TOA measurement value), Then report the location information of the reference UE and the downlink positioning measurement amount information to the LMF entity or the base station;
  • PRS downlink positioning reference signals
  • the reference UE reports the location information of the reference UE to the LMF or the base station, and sends the uplink PRS to the base station for the base station to receive the uplink PRS sent by the reference UE to obtain uplink positioning measurement information (That is, the uplink RTOA value), and then the base station reports the uplink positioning measurement amount information and the location information of the reference UE to the LMF.
  • uplink positioning measurement information That is, the uplink RTOA value
  • the reference UE described in the embodiments of the present application is the UE that assists in locating the target UE.
  • the LMF Based on the location information of the reference UE and the uplink/downlink positioning measurement quantity information reported by the reference UE, the LMF calculates and obtains the clock offset between each base station. Then, LMF has two processing methods for terminal-assisted (UE-assisted, that is, the reference UE-assisted positioning) positioning:
  • the LMF notifies each base station of the clock deviation, and each base station sends the PRS to the target UE or receives the uplink PRS from the target UE after calibrating the clock deviation;
  • the LMF does not notify each base station of the clock deviation, and each base station does not calibrate the clock deviation, and the influence of the clock deviation is eliminated by the RSTD value reported by the LMF for the target UE during location calculation.
  • the DL-TDOA or UL-TDOA positioning technical solution can be guaranteed. UE positioning accuracy.
  • the processing flow on the side of the reference UE (also referred to as the first UE) includes:
  • Step 1 The reference UE calculates and obtains the location information of the reference UE based on a pre-configured location or through an independent radio access technology (RAT-independent) positioning scheme (eg, A-GNSS, etc.).
  • RAT-independent independent radio access technology
  • Step 2 Receive downlink PRS configuration information or uplink PRS configuration information provided by the LMF or the base station.
  • the downlink PRS configuration information includes the time-frequency position of the downlink PRS, reference base station number information, etc.
  • the uplink PRS configuration information includes the time-frequency position of the uplink PRS, reference base station number information, etc. , LPP) signaling or radio resource control (Radio Resource Control, RRC) signaling transmission.
  • LPP Long Term Evolution
  • RRC Radio Resource Control
  • the downlink PRS includes a New Radio (NR) PRS, a Channel State Indication Reference Signal (CSI-RS), a System Synchronization/Physical Broadcast Channel Block (SS/PBCH Block, System Synchronization/Physical Broadcast) CHannel Block), etc.; uplink PRS includes sounding reference signal (Sounding Reference Signal, SRS) and physical random access channel (Physical Random Access CHannel, PRACH) and so on.
  • NR New Radio
  • CSI-RS Channel State Indication Reference Signal
  • SS/PBCH Block System Synchronization/Physical Broadcast Channel Block
  • SS/PBCH Block System Synchronization/Physical Broadcast
  • CHannel Block Physical Random Access CHannel
  • the reference base station mainly refers to the base station used for RSTD calculation.
  • Step 3 Refer to the UE for DL-TDOA and UL-TDOA positioning technical solutions into two cases: for DL-TDOA positioning technical solutions, go to Step 4; for UL-TDOA positioning technical solutions, go to Step 5.
  • Step 4 Processing for the DL-TDOA positioning technical solution:
  • Step 4.1 The reference UE receives and measures downlink positioning reference signals (PRS) from different base stations, and obtains the downlink positioning measurement quantity (including but not limited to: downlink RSTD, downlink TOA) and/or the reliability indication of the downlink positioning measurement quantity, wherein , the reliability indication is the standard deviation and/or variance of the error estimate of the downlink positioning measurement, which is used to indicate the reliability of the measurement.
  • PRS downlink positioning reference signals
  • the reliability indication is the standard deviation and/or variance of the error estimate of the downlink positioning measurement, which is used to indicate the reliability of the measurement.
  • Step 4.2 The reference UE reports the downlink positioning measurement quantity and/or the reliability indication of the downlink positioning measurement quantity obtained in Step 4.1, and the location information of the reference UE obtained in Step 1 to the LMF entity or the base station.
  • Step 5 Processing for UL-TDOA positioning technology solution:
  • Step 5.1 The reference UE sends the uplink PRS to the base station;
  • Step 5.2 The reference UE reports the location information of the reference UE obtained in Step 1 to the LMF entity or the base station.
  • the processing flow on the LMF entity side includes:
  • Step 1 The LMF entity sends the downlink PRS configuration information or the uplink PRS configuration information to the UE, or the LMF sends the downlink PRS configuration information or the uplink PRS configuration information to the base station, and then the base station forwards it to the UE.
  • Step 2 The LMF entity receives the location information of the reference UE reported by the reference UE, and the downlink positioning measurement information (including but not limited to: downlink RSTD measurement value, downlink TOA measurement value) reported by the reference UE, or the uplink positioning measurement reported by the base station quantity information (that is, the upstream RTOA value).
  • the downlink positioning measurement information including but not limited to: downlink RSTD measurement value, downlink TOA measurement value
  • the uplink positioning measurement reported by the base station quantity information that is, the upstream RTOA value.
  • Step 3 The LMF entity calculates the clock deviation between the base stations according to the location information of the reference UE reported by the reference UE in Step 2, and the downlink positioning measurement information reported by the reference UE or the uplink positioning measurement information reported by the base station. .
  • base station 1 is a reference base station
  • base station 2 is a non-reference base station
  • UE_ref represents the reference UE
  • T1 represents the clock deviation between base station 2 and base station 1
  • RSTD base station 2
  • base station 1->UE_ref represents the reference UE
  • d base station 2->UE_ref
  • d base station 1->UE_ref
  • the ideal distance is in meters
  • c is the speed of light in meters per second.
  • the following describes how the LMF calculates and obtains the clock deviation between the base stations according to the difference of the positioning measurement quantity information reported by the reference terminal or the base station, which is divided into three cases (CASE).
  • RSTD base station 2, base station 1->UE_ref
  • RSTD_perfect base station 2, base station 1->UE_ref+T1 (1)
  • the clock deviation T1 between the base station 2 and the base station 1 can be obtained by simultaneously calculating the formula (1) and the formula (2).
  • the LMF entity will The clock offset is processed (for example, arithmetic mean, or weighted average based on the reliability indication of the positioning measurement quantity, etc.) to obtain the processed clock offset.
  • the LMF entity When the reference base stations selected by multiple reference UEs are not the same base station, the LMF entity will obtain the clock offset value between any two base stations through certain algorithm processing.
  • the basic principle is that there is a linear relationship between the clock offsets of any two base stations. .
  • Formula (4)-formula (3) can obtain formula (1).
  • RSTD base station 2, base station 1->UE_ref
  • TOA base station 2->UE_ref
  • TOA base station 1->UE_ref
  • RSTD_perfect TOA_perfect (base station 2->UE_ref)-TOA_perfect (base station 1->UE_ref ).
  • the clock offset value T1 between base station 2 and base station 1 can be obtained by using the same method as CASE1.
  • RTOA(Base station 1->UE_ref) RTOA_perfect(Base station 1->UE_ref)+0 (5)
  • RTOA(Base station 2->UE_ref) RTOA_perfect(Base station 2->UE_ref)+T1 (6)
  • Formula (6)-formula (5) can obtain formula (1).
  • RSTD(UE_ref->base station 2, base station 1) RTOA(UE_ref->base station 2)-RTOA(UE_ref->base station 1);
  • RSTD_perfect RTOA_perfect(UE_ref->base station 2)-RTOA_perfect(UE_ref->base station 1 ).
  • the clock offset value T1 between base station 2 and base station 1 can be obtained by using the same method as CASE1.
  • Step 4 Based on the clock offset T1 calculated by the LMF entity in Step 3, the LMF entity adopts one of the following two methods:
  • the LMF entity For UE-assisted positioning, the LMF entity notifies each base station of the clock deviation T1, and each base station can calibrate the clock deviation between them, and then the base station sends the downlink PRS to the target UE or receives from the target UE.
  • Uplink PRS Uplink PRS
  • Method 2 For UE-assisted positioning, the LMF entity does not notify each base station of the clock deviation T1, and each base station does not calibrate the clock deviation between each other, and the RSTD value reported by the LMF entity for the target UE or the base station when the location is solved.
  • the clock offset is subtracted from the uplink RTOA value reported by the target UE.
  • the difference between the RSTD value reported by the target UE and the clock deviation is used as the revised downlink positioning measurement information, or the difference between the value of the uplink RTOA reported by the base station about the target terminal and the clock deviation is used as the revised value.
  • downlink positioning measurement information the difference between the RSTD value reported by the target UE and the clock deviation.
  • Step 5 The LMF entity receives the downlink positioning measurement amount information (including but not limited to: downlink RSTD measurement value, downlink TOA measurement value) reported by the target UE, or the uplink positioning measurement amount information (RTOA value) reported by the base station.
  • the downlink positioning measurement amount information including but not limited to: downlink RSTD measurement value, downlink TOA measurement value
  • RTOA value uplink positioning measurement amount information
  • the downlink RSTD measurement value reported by the target UE or the difference between the downlink TOA measurement values from two base stations reported by the target UE is directly assigned to the revised RSTD measurement value; or, the uplink positioning measurement value reported by the base station is directly assigned.
  • the quantity information (RTOA value) is directly assigned to the corrected RTOA measurement value.
  • the LMF entity performs the clock offset elimination operation in combination with the clock offset T1 between the base stations obtained in Step 4, and obtains the revised downlink RSTD measurement value or uplink RTOA measurement value.
  • the following lines are examples to illustrate.
  • base station 1 is a reference base station
  • base station 2 is a non-reference base station
  • UE_target indicates the target UE
  • T1 indicates the clock deviation between base station 2 and base station 1 calculated in Step 3
  • RSTD base station 2, base station 1->UE_target indicates the reference UE
  • the clock offset elimination operation is shown in formula (7).
  • RSTD_modify(base station 2, base station 1->UE_target) RSTD(base station 2, base station 1->UE_target)-T1 (7)
  • Step 6 Based on the revised downlink RSTD measurement value or uplink RTOA measurement value obtained in Step 5, the LMF entity performs the location calculation operation of the target UE (based on the existing Chan algorithm, etc.) to obtain the location information of the target UE.
  • the processing flow of the target UE includes:
  • Step 1 The target UE receives the downlink PRS configuration information or the uplink PRS configuration information provided by the LMF entity or the base station, where the downlink PRS configuration information includes the time-frequency location of the downlink PRS, reference base station number information, etc. Time-frequency location, reference base station number information, etc.
  • the configuration information is transmitted through LPP signaling or RRC signaling.
  • Step 2 The target UE is divided into two cases for the DL-TDOA and UL-TDOA positioning technical solutions: for the DL-TDOA positioning technical solution, go to Step 3; for the UL-TDOA positioning technical solution, go to Step 4.
  • Step 3 Processing for the DL-TDOA positioning technical solution:
  • Step 3.1 The target UE receives and measures downlink positioning reference signals (PRS) from different base stations, and obtains downlink positioning measurement quantities (including but not limited to: downlink RSTD, downlink TOA) and/or downlink positioning measurement quantities. Reliability indication.
  • PRS downlink positioning reference signals
  • Step 3.2 The target UE reports the downlink positioning measurement quantity and/or the reliability indication of the downlink positioning measurement quantity obtained in Step 3.1 to the LMF.
  • Step 4 Processing for UL-TDOA positioning technology solution:
  • Step 4.1 The target UE base station sends the uplink PRS.
  • the processing flow on the base station (applicable to all base stations) side includes:
  • Step 1 The base station receives the downlink PRS configuration information or the uplink PRS configuration information sent by the LMF entity, and then forwards the configuration information to the UE.
  • Step 2 For the DL-TDOA and UL-TDOA positioning technology solutions, there are two cases for processing: for the DL-TDOA positioning technology solution, go to Step 3; for the UL-TDOA positioning technology solution, go to Step 4.
  • Step 3 Processing for the DL-TDOA positioning technical solution:
  • Step 3.1 The base station sends the downlink PRS to the reference UE.
  • Step 3.2 The base station receives the downlink positioning measurement information and the location information of the reference UE reported by the reference UE, and forwards it to the LMF entity, where the downlink positioning measurement information includes but is not limited to: downlink RSTD measurement value, downlink TOA measurement value.
  • Step 4 Processing for UL-TDOA positioning technology solution:
  • Step 4.1 The base station receives and measures the uplink PRS sent by the reference UE to obtain uplink positioning measurement information (ie, uplink RTOA value);
  • Step 4.2 The base station reports uplink positioning measurement information to the LMF entity, and forwards the location information of the reference UE reported by the reference UE.
  • Step 5 Method 1 in Step 4 based on the LMF entity, when the base station receives the clock deviation T1 notified by the LMF entity, each base station calibrates its own clock deviation independently, and then divides the DL-TDOA and UL-TDOA positioning technical solutions into two types Situation handling: For the DL-TDOA positioning technical solution, go to Step 6; for the UL-TDOA positioning technical solution, go to Step 7.
  • Step 6 Processing for the DL-TDOA positioning technical solution:
  • Step 6.1 The base station sends the downlink PRS to the target UE.
  • Step 6.2 The base station receives the downlink positioning measurement information reported by the target UE, and forwards it to the LMF entity, where the downlink positioning measurement information includes but is not limited to: downlink RSTD measurement value and downlink TOA measurement value.
  • Step 7 Processing for UL-TDOA positioning technology solution:
  • Step 7.1 The base station receives and measures the uplink PRS sent by the target UE to obtain uplink positioning measurement information (ie, uplink RTOA value).
  • uplink positioning measurement information ie, uplink RTOA value
  • Step 7.2 The base station reports the uplink positioning measurement information to the LMF.
  • the positioning signaling notifies the reference UE, the target UE, and the base station.
  • the positioning signaling may be signaling including positioning reference signal configuration information, or may be a separate piece of signaling. If it is a separate signaling, the positioning signaling can be sent before sending the positioning reference signal configuration information to notify the reference UE, the target UE and the base station that the DL-TDOA positioning technology solution needs to be processed, or the UL-TDOA positioning technology solution needs to be processed. deal with.
  • Embodiment 1 Single reference UE, DL-TDOA positioning.
  • the downlink positioning measurement amount information reported by the reference terminal is the RSTD value and/or TOA value between different base stations.
  • the LMF entity adopts processing method 1: the LMF entity notifies each base station of the clock deviation T1, and each base station can calibrate the clock deviation between them, and then the base station sends the PRS.
  • base station 1 is a reference base station
  • base station 2 is a non-reference base station.
  • the first UE#a is the reference UE dedicated to positioning; the second UE#c is the target UE.
  • the processing flow of the first UE#a includes:
  • Step 1 The reference UE obtains the position information of the reference UE based on the pre-configuration, or obtains the position information of the reference UE by calculating the RAT-independent positioning scheme (eg, A-GNSS, etc.).
  • the RAT-independent positioning scheme eg, A-GNSS, etc.
  • Step 2 Receive the downlink PRS configuration information provided by the LMF entity or the base station, where the downlink PRS configuration information includes the time-frequency location of the downlink PRS, reference base station number information, etc., and the configuration information is transmitted through LPP signaling or RRC signaling.
  • Step 3 The reference UE determines that it is a technical solution for DL-TDOA positioning, and needs to enter Step 4.
  • Step 4 Processing for the DL-TDOA positioning technical solution:
  • Step 4.1 The reference UE receives and measures downlink positioning reference signals (PRS) from different base stations, and obtains downlink positioning measurement quantities (including but not limited to: RSTD values between different base stations, TOA values of different base stations) and/or downlink positioning an indication of the reliability of the measurement;
  • PRS downlink positioning reference signals
  • Step 4.2 The reference UE reports the downlink positioning measurement quantity and/or the reliability indication of the downlink positioning measurement quantity obtained in Step 4.1, and the location information of the reference UE obtained in Step 1 to the LMF entity or the base station.
  • the processing flow of the LMF entity includes:
  • Step 1 The LMF entity sends the downlink PRS configuration information or the uplink PRS configuration information to the UE, or the LMF entity sends the downlink PRS configuration information or the uplink PRS configuration information to the base station, which is then forwarded by the base station to the UE.
  • Step 2 The LMF entity receives the location information and downlink positioning measurement quantity information of the reference UE reported by the reference UE (including but not limited to: RSTD values between different base stations and individual TOA values of different base stations).
  • Step 3 The LMF entity calculates the clock deviation between the base stations according to the location information of the reference UE reported by the reference UE and the downlink positioning measurement amount information reported by the reference UE received in Step 2.
  • base station 1 is a reference base station
  • base station 2 is a non-reference base station
  • UE_ref represents the reference UE
  • T1 represents the clock deviation between base station 2 and base station 1
  • RSTD base station 2
  • base station 1->UE_ref represents the reference UE
  • d base station 2->UE_ref
  • d base station 1->UE_ref
  • c is the speed of light in meters per second.
  • the following describes how the LMF entity calculates and obtains the clock offset between the base stations according to the difference of the positioning measurement information reported by the reference terminal into two cases.
  • the clock deviation T1 between the base station 2 and the base station 1 can be obtained by simultaneously calculating the formula (8) and the formula (9).
  • Equation (11)-Equation (10) yields Equation (8).
  • RSTD base station 2
  • base station 1->UE_ref TOA
  • base station 1->UE_ref TOA
  • base station 1->UE_ref TOA
  • RSTD_perfect TOA_perfect (base station 2->UE_ref)-TOA_perfect (base station 1->UE_ref ).
  • the clock offset value T1 between base station 2 and base station 1 can be obtained by using the same method as CASE1.
  • Step 4 Based on the clock offset T1 calculated by LMF in Step 3, the LMF entity is processed by the following methods:
  • the LMF entity notifies each base station of the clock deviation T1, and each base station can calibrate the clock deviation between them, and then the base station sends downlink PRS to the target UE or receives uplink PRS from the target UE.
  • Step 5 The LMF entity receives the downlink positioning measurement information (including but not limited to: downlink RSTD measurement value, downlink TOA measurement value) reported by the target UE, and performs the following processing:
  • the downlink positioning measurement information including but not limited to: downlink RSTD measurement value, downlink TOA measurement value
  • the RSTD value reported by the target UE or the difference between the TOA values from two base stations reported by the target UE is directly assigned to the corrected RSTD measurement value.
  • Step 6 Based on the corrected RSTD measurement value obtained in Step 5, the LMF entity performs the location calculation operation of the target UE (based on the existing algorithm) to obtain the location information of the target UE.
  • the processing flow of the second UE#c includes:
  • Step 1 The target UE receives the downlink PRS configuration information provided by the LMF entity or the base station, where the downlink PRS configuration information includes the time-frequency location of the downlink PRS and the reference base station number information, etc.
  • the configuration information is transmitted through LPP signaling or RRC signaling.
  • Step 2 The target UE is determined to be the DL-TDOA positioning technical solution, and enters Step 3.
  • Step 3 Processing for the DL-TDOA positioning technical solution:
  • Step 3.1 The target UE receives and measures downlink positioning reference signals (PRS) from different base stations, and obtains downlink positioning measurement quantities (including but not limited to: RSTD values between different base stations, TOA values of different base stations) and/or downlink positioning an indication of the reliability of the measurement;
  • PRS downlink positioning reference signals
  • Step 3.2 The target UE reports the downlink positioning measurement information obtained in Step 3 to the LMF entity.
  • the processing flow of the base station (applicable to reference base station #1 and non-reference base station #2) includes:
  • Step 1 The reference base station receives the downlink PRS configuration information or the uplink PRS configuration information of the LMF entity, and then forwards the configuration information to the UE.
  • Step 2 Confirm that it is a DL-TDOA positioning technology solution, and enter Step 3.
  • Step 3 Processing for the DL-TDOA positioning technical solution:
  • Step 3.1 The base station sends the downlink PRS to the reference UE;
  • Step 3.2 The base station receives the downlink positioning measurement information and the location information of the reference UE reported by the reference UE, and forwards it to the LMF entity, where the downlink positioning measurement information includes but is not limited to: RSTD values between different base stations, Individual TOA values.
  • Step 5 Based on Step 4 of the LMF entity, when the base station receives the clock deviation T1 notified by the LMF entity, each base station calibrates its own clock deviation independently, and then enters Step 6 for the DL-TDOA positioning technical solution.
  • Step 6 Processing for the DL-TDOA positioning technical solution:
  • Step 6.1 The base station sends the downlink PRS to the target UE;
  • Step 6.2 The base station receives the downlink positioning measurement information reported by the target UE, and forwards it to the LMF entity, where the downlink positioning measurement information includes but is not limited to: RSTD values between different base stations and individual TOAs of different base stations.
  • Embodiment 2 Multiple reference UEs, DL-TDOA positioning.
  • the downlink positioning measurement amount information reported by the reference terminal is the RSTD value between different base stations.
  • the LMF entity adopts processing method 2, that is, the LMF entity does not notify the clock deviation T1 to each base station, and each base station does not calibrate the clock deviation between each other. value minus this clock skew.
  • the first UE#a and the first UE#b are reference UEs dedicated for positioning measurement; the second UE#c is the target UE.
  • the processing flow of the first UE includes:
  • Step 1 The reference UE calculates the position information of the reference UE based on the pre-configured position information or through a RAT-independent positioning scheme (eg, A-GNSS, etc.).
  • a RAT-independent positioning scheme eg, A-GNSS, etc.
  • Step 2 Receive the downlink PRS configuration information provided by the LMF entity or the base station, where the downlink PRS configuration information includes the time-frequency location of the downlink PRS, reference base station number information, etc., and the configuration information is transmitted through LPP signaling or RRC signaling.
  • Step 3 Refer to the UE to determine that it is a DL-TDOA positioning technical solution, and enter Step 4.
  • Step 4 Processing for the DL-TDOA positioning technical solution:
  • Step 4.1 The reference UE receives and measures downlink positioning reference signals (PRS) from different base stations, and obtains downlink positioning measurements (including but not limited to: downlink RSTD, downlink TOA) and/or downlink positioning measurements reliability indication;
  • PRS downlink positioning reference signals
  • Step 4.2 The reference UE reports the downlink positioning measurement information obtained in Step 4.1 and the location information of the reference UE obtained in Step 1 to the LMF entity or the base station.
  • the processing flow of the LMF entity includes:
  • Step 1 The LMF entity sends the downlink PRS configuration information to the UE, or the LMF entity sends the downlink PRS configuration information to the base station, which is then forwarded to the UE by the base station.
  • Step 2 The LMF entity receives the location information of the reference UE reported by the reference UE, and the downlink positioning measurement quantity information (including but not limited to: downlink RSTD measurement value and downlink TOA measurement value) reported by the reference UE.
  • the downlink positioning measurement quantity information including but not limited to: downlink RSTD measurement value and downlink TOA measurement value
  • Step 3 The LMF entity calculates the clock deviation between the base stations according to the location information of the reference UE reported by the reference UE and the downlink positioning measurement amount information reported by the reference UE in Step 2.
  • UE_ref indicates the reference UE a and b
  • T1 indicates the clock deviation between base station 2 and base station 1
  • RSTD base station 2
  • base station 1->UE_ref indicates the reference UE reported between base station 2 and base station 1.
  • RSTD, d (base station 2->UE_ref) and d (base station 1->UE_ref) represent the ideal distance between base station 2, base station 1 and the reference UE, respectively, in meters
  • c represents the speed of light, in meters per second.
  • the following describes how the LMF entity calculates and obtains the clock offset between the base stations according to the difference of the positioning measurement information reported by the reference terminal or the base station.
  • CASE 1 When the reference base station selected by multiple reference UEs is the same base station (both reference UEs assume that base station 1 is a reference base station and base station 2 is a non-reference base station), when the downlink positioning measurement reported by reference terminal a and reference terminal b
  • the quantity information is the downlink RSTD measurement value
  • RSTD(base station 2, base station 1->UE a) RSTD_perfect(base station 2, base station 1->UE a)+T1(a) (13)
  • the reference base station is independently selected by the reference UE, or the reference base station is configured by the LMF entity
  • the clock deviation T1(a) between base station 2 and base station 1 estimated based on reference UE a can be obtained; by combining formula (15) and formula (16), it can be obtained based on Refer to the clock offset T1(b) between base station 2 and base station 1 estimated by UE b.
  • w1 is the weighting coefficient, and the value is between 0 and 1.
  • CASE 2 When the reference base stations selected by multiple reference UEs are not the same base station, the LMF entity will obtain the clock deviation value between any two base stations through algorithm processing.
  • the basic principle is that there is a linearity between the clock deviations of any two base stations. relation.
  • the two reference UE a and UE b respectively assume that base station 1 and base station 2 are reference base stations, besides base station 1 and base station 2, there is also base station 3.
  • downlink RSTD measurement values of base station 2 and base station 3 relative to reference base station 1 can be obtained.
  • T1(base station 2, base station 1) represents the clock offset of base station 2 relative to reference base station 1
  • T1(base station 3, base station 1) represents the clock offset of base station 3 relative to reference base station 1.
  • RSTD(base station 2, base station 1->UE a) RSTD_perfect(base station 2, base station 1->UE a)+T1(base station 2, base station 1) (17)
  • the downlink RSTD measurement values of base station 1 and base station 3 relative to reference base station 2 can be obtained.
  • T2 base station 1, base station 2
  • T2 base station 3, base station 2
  • T2 base station 3, base station 2
  • RSTD(base station 1, base station 2->UE a) RSTD_perfect(base station 1, base station 2->UE a)+T2(base station 1, base station 2) (21)
  • RSTD base station 3, base station 2->UE a
  • RSTD_perfect base station 3, base station 2->UE a
  • T2 base station 3, base station 2
  • the clock deviation of base station 2 relative to base station 1 is: (T1 (base station 2, base station 1)-T2 (base station 1, base station 2))/2.
  • the clock offset of base station 3 relative to base station 1 is: (T1(base station 3, base station 1)+(T2(base station 3, base station 2)-T2(base station 1, base station 2))/2)/2.
  • weighting processing can also be performed in combination with the quality indication of the positioning measurement information. For example:
  • the clock offset of base station 2 relative to base station 1 is: (w1*T1(base station 2, base station 1)-(1-w1)*T2(base station 1, base station 2))/2.
  • the clock deviation of base station 3 relative to base station 1 is: (w1*T1(base station 3, base station 1)+(1-w1)*(T2(base station 3, base station 2)-T2(base station 1, base station 2))/2 )/2.
  • w1 is the weighting coefficient, and the value is between 0 and 1.
  • Step 4 Based on the clock deviation T1 calculated by the LMF entity in Step 3, the LMF uses method 2 to process:
  • Method 2 For UE-assisted positioning, the LMF entity does not notify the clock deviation T1 to each base station, and each base station does not calibrate the clock deviation between each other, and the LMF entity subtracts the RSTD value reported by the target UE for the location calculation the clock skew.
  • Step 5 The LMF entity receives the downlink positioning measurement information (including but not limited to: downlink RSTD measurement value, downlink TOA measurement value) reported by the target UE, and the LMF entity removes the clock deviation in combination with the clock deviation T1 between the base stations obtained in Step 4 operation to obtain the corrected RSTD measurement value.
  • the downlink positioning measurement information including but not limited to: downlink RSTD measurement value, downlink TOA measurement value
  • base station 1 is a reference base station
  • base station 2 is a non-reference base station
  • UE_target indicates the target UE
  • T1 indicates the clock deviation between base station 2 and base station 1 calculated in Step 3
  • RSTD base station 2, base station 1-> UE_target
  • the clock offset elimination operation is shown in formula (25).
  • RSTD_modify(base station 2, base station 1->UE_target) RSTD(base station 2, base station 1->UE_target)-T1 (25)
  • Step 6 Based on the corrected RSTD measurement value obtained in Step 5, the LMF performs the position calculation operation of the target UE (based on the existing Chan algorithm, etc.), and obtains the position information of the target UE.
  • the processing flow of the second UE includes:
  • Step 1 The target UE receives the downlink PRS configuration information provided by the LMF entity or the base station, where the downlink PRS configuration information includes the time-frequency location of the downlink PRS, reference base station number information, etc., and the configuration information is transmitted through LPP signaling or RRC signaling.
  • Step 2 The target UE is determined to be the DL-TDOA positioning technical solution, and enters Step 3.
  • Step 3 Processing for the DL-TDOA positioning technical solution:
  • Step 3.1 The target UE receives and measures downlink positioning reference signals (PRS) from different base stations, and obtains downlink positioning measurements (including but not limited to: downlink RSTD, downlink TOA) and/or downlink positioning measurements reliability indication;
  • PRS downlink positioning reference signals
  • Step 3.2 the target UE reports the downlink positioning measurement quantity and/or the reliability indication of the downlink positioning measurement quantity obtained in Step 3.1 to the LMF entity.
  • the processing flow of the base station (applicable to reference base stations and non-reference base stations) includes:
  • Step 1 The reference base station receives the downlink PRS configuration information of the LMF entity, and then forwards the configuration information to the UE.
  • Step 2 Confirm that it is a DL-TDOA positioning technology solution, and enter Step 3.
  • Step 3 Processing for the DL-TDOA positioning technical solution:
  • Step 3.1 The base station sends the downlink PRS to the reference UE;
  • Step 3.2 The base station receives the downlink positioning measurement information and the location information of the reference UE reported by the reference UE, and forwards it to the LMF entity, where the downlink positioning measurement information includes but is not limited to: downlink RSTD measurement value, downlink TOA measurement value.
  • Step 5 In Step 4 based on the LMF entity, when the base station receives the clock deviation T1 notified by the LMF entity, each base station calibrates its own clock deviation independently, and then proceeds to Step 6 for the DL-TDOA positioning technical solution.
  • Step 6 Processing for the DL-TDOA positioning technical solution:
  • Step 6.1 The base station sends the downlink PRS to the target UE;
  • Step 6.2 The base station receives the downlink positioning measurement information reported by the target UE, and forwards it to the LMF entity, where the downlink positioning measurement information includes but is not limited to: downlink RSTD measurement value and downlink TOA measurement value.
  • Embodiment 3 Single reference UE, UL-TDOA positioning.
  • the base station receives the uplink PRS sent by the reference UE, and obtains and reports the uplink positioning measurement information (uplink RTOA value) to the LMF entity.
  • the LMF entity adopts processing method 1: the LMF entity notifies each base station of the clock deviation T1, and each base station can calibrate the clock deviation between them, and then the base station receives the uplink PRS.
  • base station 1 is a reference base station
  • base station 2 is a non-reference base station.
  • the first UE a is the reference UE dedicated to positioning; the second UE c is the target UE.
  • the processing flow of the first UE includes:
  • Step 1 The reference UE calculates the position information of the reference UE based on the pre-configured position information or through a RAT-independent positioning scheme (eg, A-GNSS, etc.).
  • a RAT-independent positioning scheme eg, A-GNSS, etc.
  • Step 2 Receive the uplink PRS configuration information provided by the LMF entity or the base station, where the uplink PRS configuration information includes the time-frequency location of the uplink PRS, reference base station number information, etc., and the configuration information is transmitted through LPP signaling or RRC signaling.
  • Step 3 Refer to the UE to determine that it is for the processing of the UL-TDOA positioning technical solution, and enter Step 5.
  • Step 5 Processing for UL-TDOA positioning technology solution:
  • Step 5.1 refer to the UE base station to send the uplink PRS
  • Step 5.2 The reference UE reports the location information of the reference UE obtained in Step 1 to the LMF entity or the base station.
  • the processing flow of the LMF entity includes:
  • Step 1 The LMF entity sends the uplink PRS configuration information to the UE, or the LMF entity sends the uplink PRS configuration information to the base station, which is then forwarded to the UE by the base station.
  • Step 2 The LMF entity receives the location information of the reference UE reported by the reference UE, and the uplink positioning measurement amount information (that is, the uplink RTOA value) reported by the base station.
  • Step 3 The LMF entity calculates the clock deviation between the base stations according to the location information of the reference UE reported by the reference UE in Step 2 and the uplink positioning measurement information reported by the base station.
  • base station 1 is a reference base station
  • base station 2 is a non-reference base station
  • UE_ref represents the reference UE
  • T1 represents the clock deviation between base station 2 and base station 1
  • RSTD base station 2
  • base station 1->UE_ref represents the reference UE
  • d base station 2->UE_ref
  • d base station 1->UE_ref
  • c Indicates the speed of light in meters per second.
  • the following describes how the LMF entity calculates and obtains the clock offset between the base stations according to the uplink RTO obtained by different base stations based on the uplink PRS measurement based on the positioning measurement quantity information reported by the reference terminal or the base station.
  • the uplink positioning measurement quantity information reported by the base station is the uplink RTOA value obtained by different base stations based on the uplink PRS measurement
  • RTOA(UE_ref->Base Station 1) RTOA_perfect(Base Station 1->UE_ref)+0 (26)
  • RTOA(UE_ref->Base Station 2) RTOA_perfect(UE_ref->Base Station 2)+T1 (27)
  • RTOA_perfect(UE_ref->Base Station 1) d(UE_ref->Base Station 1)/c-TOA_reference (28)
  • RTOA_perfect(UE_ref->Base Station 2) d(UE_ref->Base Station 2)/c-TOA_reference (29)
  • the same reference base station is selected when calculating the clock offset for multiple reference UEs.
  • Step 4 Based on the clock offset T1 calculated by the LMF entity in Step 3, the LMF entity uses the following method 1 to process:
  • the LMF entity For UE-assisted positioning, the LMF entity notifies each base station of the clock deviation T1, and each base station can calibrate the clock deviation between them, and then the base station sends the downlink PRS to the target UE or receives the uplink PRS from the target UE.
  • Step 5 The LMF entity receives the uplink positioning measurement information (RTOA value) reported by the base station, and performs the following processing for the method in Step 4:
  • RTOA value uplink positioning measurement information
  • the LMF entity directly assigns the uplink positioning measurement information (RTOA value) reported by the base station to the modified RTOA measurement value.
  • RTOA value uplink positioning measurement information
  • Step 6 Based on the revised uplink RTOA measurement value obtained in Step 5, the LMF entity performs the location calculation operation of the target UE (based on the existing Chan algorithm, etc.), and obtains the location information of the target UE.
  • the processing flow of the second UE includes:
  • Step 1 The target UE receives the uplink PRS configuration information provided by the LMF entity or the base station, where the uplink PRS configuration information includes the time-frequency location of the uplink PRS, reference base station number information, etc., and the configuration information is transmitted through LPP signaling or RRC signaling.
  • Step 2 Determining the target UE is for the processing of the UL-TDOA positioning technical solution, and entering Step 4.
  • Step 4 Processing for UL-TDOA positioning technology solution:
  • Step 4.1 The target UE base station sends the uplink PRS.
  • the processing flow of the base station includes:
  • Step 1 The reference base station receives the uplink PRS configuration information of the LMF entity, and then forwards the configuration information to the UE.
  • Step 2 It is determined that it is for the processing of the UL-TDOA positioning technology solution, and then enter Step 4.
  • Step 4 Processing for UL-TDOA positioning technology solution:
  • Step 4.1 The base station receives and measures the uplink PRS sent by the reference UE to obtain uplink positioning measurement information (ie, uplink RTOA value);
  • Step 4.2 The base station reports uplink positioning measurement information to the LMF entity, and forwards the location information of the reference UE reported by the reference UE.
  • Step 5 Method 1) in Step 4 based on the LMF entity, when the base station receives the clock deviation T1 notified by the LMF entity, each base station calibrates its own clock deviation independently, and then enters Step 7 for the UL-TDOA positioning technical solution.
  • Step 7 Processing for UL-TDOA positioning technology solution:
  • Step 7.1 The base station receives and measures the uplink PRS sent by the target UE to obtain uplink positioning measurement information (ie, uplink RTOA value);
  • Step 7.2 The base station reports the uplink positioning measurement information to the LMF entity.
  • the embodiment of the present application proposes a solution for eliminating clock offset between base stations based on a reference UE. Since the influence of the clock deviation is eliminated from the RSTD measurement information of the target UE processed by the LMF entity, the UE positioning accuracy of the DL-TDOA positioning technical solution can be improved.
  • a positioning method provided by an embodiment of the present application includes:
  • the reference UE receives the downlink PRS configuration information or the uplink PRS configuration information provided by the LMF entity or the base station.
  • downlink positioning reference signals for example: downlink PRS
  • receive and measure downlink positioning reference signals for example: downlink PRS
  • determine downlink positioning measurement amount information and report the downlink positioning measurement information and the location information of the reference terminal, so that the LMF entity locates the target terminal based on the downlink positioning measurement information and the location information of the reference terminal;
  • the reference UE can also report the downlink positioning measurement information and the location information of the reference terminal to the base station, which is forwarded to the LMF entity by the base station, and finally the LMF entity reports to the target based on the downlink positioning measurement information and the position information of the reference terminal.
  • the terminal is positioned.
  • uplink positioning reference signal eg, uplink PRS
  • uplink PRS uplink PRS
  • the signal and the location information of the reference terminal locate the target terminal.
  • the reference UE can also send an uplink positioning reference signal to the base station, and send the location information of the reference terminal to the LMF entity or the base station. If sent to the base station, the base station can forward the location information of the reference terminal to the LMF entity; the base station receives the uplink positioning reference signal and determines The corresponding uplink positioning measurement information is then sent to the LMF entity, and the LMF entity receives the uplink positioning measurement information and the position information of the reference terminal, and determines the base station based on the uplink positioning measurement information and the position information of the reference terminal.
  • the clock deviation between the two modify the uplink positioning measurement information of the target terminal according to the clock deviation, and determine the revised uplink positioning measurement information about the target terminal; according to the revised uplink positioning measurement information of the target terminal to determine the location information of the target terminal.
  • the positioning reference signal configuration information includes uplink and/or downlink positioning reference signal configuration information, and for the downlink time difference of arrival DL-TDOA positioning technical solution, the downlink positioning reference signal configuration information is received and measured from different base stations.
  • the uplink positioning reference signal is sent based on the uplink positioning reference signal configuration information for the uplink time difference of arrival UL-TDOA positioning technical solution.
  • the positioning reference signals described in the embodiments of this application may be PRS, CSI-RS, SS/PBCH Block, SRS, PRACH, etc., and are not limited to PRS.
  • the downlink positioning reference signals from different base stations are received and measured based on the positioning reference signal configuration information, the downlink positioning measurement quantity information is determined, and the downlink positioning measurement quantity is reported information and the location information of the reference terminal;
  • the uplink positioning reference signal is sent based on the positioning reference signal configuration information, and the position information of the reference terminal is sent, so that the LMF entity can report based on the reference UE.
  • the reference terminal described in the embodiments of the present application that is, the reference terminal used for locating the target terminal, may be any terminal;
  • the target terminal described in the embodiments of the present application may also be any terminal.
  • the downlink positioning measurement amount information includes: a downlink positioning measurement amount and/or a reliability indication of the downlink positioning measurement amount, wherein the reliability indication is a standard deviation sum of the error estimation value of the downlink positioning measurement amount. /or variance, used to indicate the reliability of downlink positioning measurements.
  • the location information of the reference terminal is determined by the reference terminal based on pre-configured location information or through an independent radio access technology RAT-independent positioning scheme.
  • the positioning reference signal configuration information is provided by the LMF entity or the base station.
  • a positioning method provided by an embodiment of the present application includes:
  • the uplink time difference of arrival UL-TDOA positioning technical solution receive the location information of the reference terminal reported by the reference terminal, and receive the uplink positioning measurement information of the reference terminal reported by the base station and the uplink positioning measurement of the target terminal reported by the base station.
  • the target terminal is positioned based on the uplink positioning measurement amount information of the reference terminal, the location information of the reference terminal, and the uplink positioning measurement amount information of the target terminal.
  • the positioning of the target terminal based on the downlink positioning measurement information reported by the reference terminal and the location information of the reference terminal, and the downlink positioning measurement information reported by the target terminal includes:
  • the location information of the target terminal is determined according to the revised downlink positioning measurement quantity information of the target terminal.
  • the target terminal is located based on the uplink positioning measurement information about the reference terminal and the position information of the reference terminal reported by the base station, and the uplink positioning measurement information about the target terminal reported by the base station, include:
  • the location information of the target terminal is determined according to the corrected uplink positioning measurement quantity information of the target terminal.
  • the revised downlink positioning measurement amount information includes: downlink RSTD measurement value.
  • the method before acquiring the location information and downlink positioning measurement amount information of the reference terminal, the method further includes:
  • the downlink positioning reference signal configuration information is sent to the terminal; or the downlink positioning reference signal configuration information is sent to the base station, and the base station forwards the downlink positioning reference signal configuration information to the terminal.
  • the location information of the reference terminal is reported by the reference terminal;
  • the downlink positioning measurement amount information is the downlink positioning measurement amount information reported by the reference terminal.
  • the downlink positioning measurement amount information of the target terminal is modified according to the clock deviation, and the corrected downlink positioning measurement amount information about the target terminal is determined, which specifically includes:
  • the difference between the RSTD value reported by the target terminal and the clock deviation is used as the corrected downlink positioning measurement quantity information.
  • the revised uplink positioning measurement quantity information includes an uplink relative time of arrival RTOA measurement value.
  • the method before acquiring the location information and uplink positioning measurement amount information of the reference terminal, the method further includes:
  • modifying the uplink positioning measurement information of the target terminal according to the clock deviation, and determining the corrected uplink positioning measurement information about the target terminal specifically includes:
  • the clock deviation is notified to the base station, so that after the base station calibrates the clock deviation between the base stations, the uplink sounding reference signal from the target terminal is received; the uplink RTOA value reported by the base station is directly assigned to the revised RTOA value;
  • the difference between the uplink RTOA value reported by the base station about the target terminal and the clock deviation is used as the corrected uplink positioning measurement quantity information.
  • a positioning method provided by an embodiment of the present application includes:
  • the positioning reference signal configuration information includes uplink and/or downlink positioning reference signal configuration information.
  • the target UE receives downlink PRS configuration information or uplink PRS configuration information provided by the LMF entity or the base station.
  • the downlink positioning measurement amount information includes: a downlink positioning measurement amount and/or a reliability indication of the downlink positioning measurement amount, wherein the reliability indication is a standard deviation sum of the error estimation value of the downlink positioning measurement amount. /or variance, used to indicate the reliability of downlink positioning measurements.
  • the positioning reference signal configuration information is provided by the LMF entity or the base station.
  • a positioning method provided by an embodiment of the present application includes:
  • the positioning reference signal configuration information includes uplink and/or downlink positioning reference signal configuration information.
  • the base station receives downlink PRS configuration information or uplink PRS configuration information sent by the LMF entity, and then forwards the configuration information to the UE.
  • the method further includes:
  • the uplink positioning reference signal sent by the target terminal is received and measured to obtain the uplink positioning measurement information of the target terminal, and the uplink positioning measurement information of the target terminal is reported to the LMF entity.
  • a positioning device (which may be any type of terminal) provided by an embodiment of the present application includes:
  • a memory 820 for storing program instructions
  • the processor 800 is used for calling the program instructions stored in the memory, and executes according to the obtained program:
  • the downlink time difference of arrival DL-TDOA positioning technical solution receive and measure downlink positioning reference signals from different base stations based on positioning reference signal configuration information, determine downlink positioning measurement information, and report the downlink positioning measurement information and the reference terminal. location information, so that the LMF entity locates the target terminal based on the downlink positioning measurement information and the location information of the reference terminal; and/or
  • the uplink positioning reference signal is sent based on the positioning reference signal configuration information, and the location information of the reference terminal is sent, so that the LMF entity is based on the uplink positioning reference signal and the position of the reference terminal. information to locate the target terminal.
  • the downlink positioning measurement amount information includes: a downlink positioning measurement amount and/or a reliability indication of the downlink positioning measurement amount, wherein the reliability indication is a standard deviation sum of the error estimation value of the downlink positioning measurement amount. /or variance, used to indicate the reliability of downlink positioning measurements.
  • the location information of the reference terminal is determined by the reference terminal based on pre-configured location information or through an independent radio access technology RAT-independent positioning scheme.
  • the positioning reference signal configuration information is provided by the LMF entity or the base station.
  • the transceiver 810 is used to receive and transmit data under the control of the processor 800 .
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 800 and various circuits of memory represented by memory 820 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 810 may be a number of elements, including a transmitter and a receiver, that provide a means for communicating with various other devices over a transmission medium.
  • the user interface 830 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 800 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 800 in performing operations.
  • the processor 800 may be a central processing unit (Central Processing Unit, CPU), an application specific integrated circuit (Application Specific Integrated Circuit,) ASIC, a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable Complex Programmable Logic Device (CPLD).
  • CPU Central Processing Unit
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array
  • CPLD complex programmable Complex Programmable Logic Device
  • a positioning device (which may be an LMF entity) provided by an embodiment of the present application includes:
  • the processor 900 is configured to call the program instructions stored in the memory, and execute according to the obtained program:
  • the downlink positioning measurement information reported by the reference terminal and the location information of the reference terminal are received, and the downlink positioning measurement information reported by the target terminal is received; based on the downlink positioning measurement information reported by the reference terminal Positioning measurement amount information and position information of the reference terminal, and downlink positioning measurement amount information reported by the target terminal, to locate the target terminal; and/or
  • the location information of the reference terminal reported by the reference terminal is received, and the uplink positioning measurement quantity information of the reference terminal reported by the base station and the uplink positioning measurement quantity information of the target terminal reported by the base station are received. ; Locating the target terminal based on the uplink positioning measurement information of the reference terminal, the position information of the reference terminal, and the uplink positioning measurement information of the target terminal.
  • the processor 900 is specifically configured to:
  • the location information of the target terminal is determined according to the revised downlink positioning measurement quantity information of the target terminal.
  • the revised downlink positioning measurement amount information includes: downlink reference signal time difference RSTD measurement value.
  • the processor 900 is further configured to invoke the program instructions stored in the memory, and execute according to the acquired program:
  • the downlink positioning reference signal configuration information is sent to the terminal; or the downlink positioning reference signal configuration information is sent to the base station, and the base station forwards the downlink positioning reference signal configuration information to the terminal.
  • the processor 900 is specifically configured to:
  • the clock deviation is notified to the base station through the transceiver 910, so that after calibrating the clock deviation between the base stations, the base station sends a downlink positioning reference signal to the target terminal or receives a sounding reference signal from the target terminal;
  • the difference between the downlink TOAs reported by the target terminal from multiple base stations is directly assigned to the revised RSTD;
  • the difference between the RSTD value reported by the target terminal and the clock deviation is used as the corrected downlink positioning measurement quantity information.
  • the revised uplink positioning measurement quantity information includes an uplink relative time of arrival RTOA measurement value.
  • the processor 900 is further configured to invoke the program instructions stored in the memory 920, and execute according to the acquired program:
  • the processor 900 is specifically configured to call the The program instructions stored in the memory 920 according to the obtained program:
  • the base station receives the uplink sounding reference signal from the target terminal; the uplink RTOA reported by the base station is directly assigned to the revised RTOA;
  • the difference between the uplink RTOA value reported by the base station about the target terminal and the clock deviation is used as the corrected uplink positioning measurement quantity information.
  • the transceiver 910 is used to receive and transmit data under the control of the processor 900 .
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 900 and various circuits of memory represented by memory 920 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 910 may be a number of elements, including a transmitter and a receiver, that provide a means for communicating with various other devices over a transmission medium.
  • the processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 may store data used by the processor 900 in performing operations.
  • the processor 900 may be a CPU, ASIC, FPGA or CPLD.
  • a positioning device (which may be any type of terminal) provided by the embodiment of the present application can also refer to FIG. 8 for its structure, including:
  • the processor is used for calling the program instructions stored in the memory, and executes according to the obtained program:
  • the downlink time difference of arrival DL-TDOA positioning technical solution receive and measure downlink positioning reference signals from different base stations based on the positioning reference signal configuration information, determine downlink positioning measurement information, and report the downlink positioning measurement information;
  • the uplink positioning reference signal is sent based on the positioning reference signal configuration information.
  • the downlink positioning measurement amount information includes: a downlink positioning measurement amount and/or a reliability indication of the downlink positioning measurement amount, wherein the reliability indication is a standard deviation sum of the error estimation value of the downlink positioning measurement amount. /or variance, used to indicate the reliability of downlink positioning measurements.
  • the positioning reference signal configuration information is provided by the LMF entity or the base station.
  • the processor is further configured to call the program instructions stored in the memory, and execute according to the obtained program:
  • the terminal described in this embodiment of the present application can be used as a reference terminal or a target terminal, and can have the functions of a reference terminal and a target terminal at the same time.
  • FIG. 9 On the network side, another positioning device (which may be a base station) provided by this embodiment of the present application can also refer to FIG. 9 for its structure, including:
  • the processor is used for calling the program instructions stored in the memory, and executes according to the obtained program:
  • the uplink positioning reference signal sent by the reference terminal is received and measured to obtain uplink positioning measurement information, the uplink positioning measurement information is reported to the LMF entity, and the location information of the reference terminal reported by the reference terminal is forwarded. .
  • the processor is further configured to call the program instructions stored in the memory, and execute according to the obtained program:
  • the uplink positioning reference signal sent by the target terminal is received and measured to obtain the uplink positioning measurement quantity information of the target terminal, and the uplink positioning measurement quantity information of the target terminal is reported to the LMF entity.
  • another positioning apparatus provided by an embodiment of the present application includes:
  • a configuration information determining unit 11 configured to determine positioning reference signal configuration information
  • the first downlink unit 12 is configured to receive and measure downlink positioning reference signals from different base stations based on the positioning reference signal configuration information for the DL-TDOA positioning technical solution, determine downlink positioning measurement quantity information, and report the downlink positioning measurement quantity information and the location information of the reference terminal, so that the LMF entity locates the target terminal based on the downlink positioning measurement information and the location information of the reference terminal; and/or
  • the first uplink unit 13 is configured to, for the UL-TDOA positioning technical solution, send an uplink positioning reference signal based on the positioning reference signal configuration information, and send the location information of the reference terminal, so that the LMF entity is based on the uplink positioning reference signal and the reference The location information of the terminal locates the target terminal.
  • the downlink positioning measurement amount information includes: a downlink positioning measurement amount and/or a reliability indication of the downlink positioning measurement amount, wherein the reliability indication is a standard deviation sum of the error estimation value of the downlink positioning measurement amount. /or variance, used to indicate the reliability of downlink positioning measurements.
  • the location information of the reference terminal is determined by the reference terminal based on pre-configured location information or through an independent radio access technology RAT-independent positioning scheme.
  • the positioning reference signal configuration information is provided by the LMF entity or the base station.
  • another positioning device provided by this embodiment of the present application includes:
  • the first downlink processing unit 21 is configured to receive the downlink positioning measurement amount information reported by the reference terminal and the position information of the reference terminal for the downlink time difference of arrival DL-TDOA positioning technical solution, and receive the downlink positioning measurement amount reported by the target terminal. information; locate the target terminal based on the downlink positioning measurement information reported by the reference terminal and the location information of the reference terminal, and the downlink positioning measurement information reported by the target terminal; and/or
  • the first uplink processing unit 22 is configured to receive the location information of the reference terminal reported by the reference terminal, and receive the uplink positioning measurement quantity information of the reference terminal reported by the base station for the uplink time difference of arrival UL-TDOA positioning technical solution, and the base station reported The uplink positioning measurement amount information of the target terminal; based on the uplink positioning measurement amount information of the reference terminal and the location information of the reference terminal, and the uplink positioning measurement amount information of the target terminal, the target terminal is located.
  • the first downlink processing unit 21 is specifically configured to:
  • the location information of the target terminal is determined according to the revised downlink positioning measurement quantity information of the target terminal.
  • the first uplink processing unit 22 is specifically configured to:
  • the location information of the target terminal is determined according to the corrected uplink positioning measurement quantity information of the target terminal.
  • the revised downlink positioning measurement value includes: a downlink reference signal time difference RSTD measurement value.
  • the first sending unit Before acquiring the location information of the reference terminal and the downlink positioning measurement quantity information, the first sending unit is configured to:
  • the first downlink processing unit 21 is specifically configured to:
  • the difference between the RSTD value reported by the target terminal and the clock deviation is used as the corrected downlink positioning measurement quantity information.
  • the revised uplink positioning measurement quantity information includes an uplink relative time of arrival RTOA measurement value.
  • the second sending unit before obtaining the position information and uplink positioning measurement information of the reference terminal, the second sending unit is used for:
  • the first uplink processing unit 22 is specifically configured to:
  • the base station receives the uplink sounding reference signal from the target terminal; the uplink RTOA reported by the base station is directly assigned to the revised RTOA;
  • the difference between the uplink RTOA value reported by the base station about the target terminal and the clock deviation is used as the corrected uplink positioning measurement quantity information.
  • another positioning device provided by this embodiment of the present application includes:
  • a configuration information determining unit 31 configured to determine positioning reference signal configuration information
  • the second downlink unit 32 is configured to, for the DL-TDOA positioning technical solution, receive and measure downlink positioning reference signals from different base stations based on the positioning reference signal configuration information, determine downlink positioning measurement quantity information, and report the downlink positioning measurement quantity information ;and / or
  • the second uplink unit 33 is configured to send an uplink positioning reference signal based on the positioning reference signal configuration information for the UL-TDOA positioning technical solution.
  • the downlink positioning measurement amount information includes: a downlink positioning measurement amount and/or a reliability indication of the downlink positioning measurement amount, wherein the reliability indication is a standard deviation sum of the error estimation value of the downlink positioning measurement amount. /or variance, used to indicate the reliability of downlink positioning measurements.
  • the positioning reference signal configuration information is provided by the LMF entity or the base station.
  • another positioning apparatus provided by an embodiment of the present application includes:
  • a configuration information sending unit 41 configured to send positioning reference signal configuration information to the terminal
  • the second downlink processing unit 42 is configured to, for the DL-TDOA positioning technical solution, send a downlink positioning reference signal to the reference terminal, receive the downlink positioning measurement quantity information and the position information of the reference terminal reported by the reference terminal, and forward it to the LMF entity;
  • the second uplink processing unit 43 is configured to, for the UL-TDOA positioning technical solution, receive and measure the uplink positioning reference signal sent by the reference terminal to obtain the uplink positioning measurement quantity information, report the uplink positioning measurement quantity information to the LMF entity, and forward it The location information of the reference terminal reported by the reference terminal.
  • the device further includes: a clock deviation calibration unit, configured to calibrate the clock deviation of the local base station according to the clock deviation when receiving the clock deviation between the base stations notified by the LMF entity;
  • the second downlink processing unit 42 is further configured to: for the DL-TDOA positioning technical solution, send a downlink positioning reference signal to the target terminal, receive the downlink positioning measurement amount information reported by the target terminal, and forward it to the LMF entity;
  • the second uplink processing unit 43 is further configured to: for the UL-TDOA positioning technical solution, receive and measure the uplink positioning reference signal sent by the target terminal to obtain uplink positioning measurement quantity information of the target terminal, and report the uplink positioning measurement amount of the target terminal to the LMF entity Locate measurement information.
  • 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 if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium.
  • the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, and the computer software products are stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) 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 .
  • An embodiment of the present application provides a computing device, and the computing device may specifically be a desktop computer, a portable computer, a smart phone, a tablet computer, a personal digital assistant (Personal Digital Assistant, PDA), and the like.
  • the computing device may include a central processing unit (Center Processing Unit, CPU), a memory, an input/output device, etc.
  • the input device may include a keyboard, a mouse, a touch screen, etc.
  • the output device may include a display device, such as a liquid crystal display (Liquid Crystal Display, LCD), Cathode Ray Tube (CRT), etc.
  • LCD Liquid Crystal Display
  • CRT Cathode Ray Tube
  • the memory may include read only memory (ROM) and random access memory (RAM) and provide the processor with program instructions and data stored in the memory.
  • ROM read only memory
  • RAM random access memory
  • the memory may be used to store the program of any of the methods provided in the embodiments of the present application.
  • the processor invokes the program instructions stored in the memory, and the processor is configured to execute any one of the methods provided in the embodiments of the present application according to the obtained program instructions.
  • An embodiment of the present application provides a computer storage medium for storing computer program instructions used for the apparatus provided by the above embodiment of the present application, which includes a program for executing any of the methods provided by the above embodiment of the present application.
  • the computer storage medium can be any available medium or data storage device that can be accessed by a computer, including but not limited to magnetic storage (eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (eg CD, DVD, BD, HVD, etc.), and semiconductor memory (eg, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state disk (SSD)), etc.
  • magnetic storage eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.
  • optical storage eg CD, DVD, BD, HVD, etc.
  • semiconductor memory eg, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state disk (SSD)
  • the methods provided in the embodiments of the present application may be applied to terminal devices, and may also be applied to network devices.
  • the terminal equipment may also be referred to as user equipment (User Equipment, referred to as "UE"), mobile station (Mobile Station, referred to as "MS”), mobile terminal (Mobile Terminal), etc.
  • UE User Equipment
  • MS mobile Station
  • Mobile Terminal mobile terminal
  • the terminal may be Have the ability to communicate with one or more core networks via a Radio Access Network (RAN), for example, the terminal may be a mobile phone (or a "cellular” phone), or a computer with a mobile nature, etc.,
  • the terminal may also be a portable, pocket-sized, hand-held, computer-built, or vehicle-mounted mobile device.
  • a network device which may be a base station (eg, an access point), refers to a device in an access network that communicates with wireless terminals over an air interface through one or more sectors.
  • the base station may be used to convert received air frames to and from IP packets, acting as a router between the wireless terminal and the rest of the access network, which may include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station may also coordinate attribute management of the air interface.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, a base station (NodeB) in WCDMA, or an evolved base station (NodeB or eNB or e-NodeB, evolutional Node) in LTE B), or it can also be a gNB in the 5G system, etc.
  • BTS Base Transceiver Station
  • NodeB base station
  • LTE B Long Term Evolution
  • gNB evolved base station
  • the processing flow of the above method can be implemented by a software program, and the software program can be stored in a storage medium, and when the stored software program is called, the above method steps are executed.
  • 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.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
  • the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

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Abstract

本申请公开了提供了定位方法及装置，用以消除基站间时钟偏差，提高UL-TDOA/DL-TDOA定位技术方案的UE定位精度。本申请提供的方法包括：确定定位参考信号配置信息；针对下行链路到达时间差DL-TDOA定位技术方案，基于定位参考信号配置信息接收并测量来自不同基站的下行定位参考信号，确定下行定位测量量信息，并上报所述下行定位测量量信息和参考终端的位置信息；针对上行链路到达时间差UL-TDOA定位技术方案，基于定位参考信号配置信息发送上行定位参考信号，并发送参考终端的位置信息。

Description

定位方法及装置
相关申请的交叉引用
本申请要求在2020年06月29日提交中国专利局、申请号为202010606012.4、申请名称为“定位方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及定位方法及装置。
背景技术
第三代合作伙伴计划(3rd Generation Partnership Project,3GPP)定义了多种通过测量3GPP无线通信系统的自身定位参考信号(Positioning Reference Signal，PRS)的用户设备(User Equipment，UE)定位方法，例如：下行链路到达时间差(Downlink Time Difference Of Arrival，DL-TDOA)、上行链路到达时间差(Uplink Time Difference Of Arrival，UL-TDOA)等等。这些方法的特点是基于无线通信系统自身的PRS定位，可在接收不到网络外部定位参考信号环境里工作。
发明内容
本申请实施例提供了定位方法及装置，用以消除基站间时钟偏差，提高UL-TDOA/DL-TDOA定位技术方案的UE定位精度。
在参考终端侧，本申请实施例提供的一种定位方法，包括：
确定定位参考信号配置信息；
针对下行链路到达时间差DL-TDOA定位技术方案，基于定位参考信号配置信息接收并测量来自不同基站的下行定位参考信号，确定下行定位测量量信息，并上报所述下行定位测量量信息和参考终端的位置信息，使得位置 管理功能(Location Management Function，LMF)实体基于所述下行定位测量量信息和所述参考终端的位置信息对目标终端进行定位；
针对上行链路到达时间差UL-TDOA定位技术方案，基于定位参考信号配置信息发送上行定位参考信号，并发送参考终端的位置信息，使得LMF实体基于所述上行定位参考信号和所述参考终端的位置信息对目标终端进行定位。
通过该方法，针对下行链路到达时间差DL-TDOA定位技术方案，基于定位参考信号配置信息接收并测量来自不同基站的下行定位参考信号，确定下行定位测量量信息，并上报所述下行定位测量量信息和参考终端的位置信息；针对上行链路到达时间差UL-TDOA定位技术方案，基于定位参考信号配置信息发送上行定位参考信号，并发送参考终端的位置信息，从而使得LMF实体可以基于参考UE上报的参考UE的位置信息以及上/下行定位测量量信息，计算得到各个基站之间的时钟偏差，并进而消除基站间时钟偏差，提高了UL-TDOA/DL-TDOA定位技术方案的UE定位精度。
可选地，所述下行定位测量量信息，包括：下行定位测量量和/或者下行定位测量量的可靠性指示，其中，所述可靠性指示是下行定位测量量的误差估计值的标准差和/或方差，用于指示下行定位测量量的可靠性。
可选地，所述参考终端的位置信息，是参考终端基于预先配置的位置信息或者通过独立无线接入技术RAT-independent定位方案确定的。
可选地，所述定位参考信号配置信息，是LMF实体或基站提供的。
在LMF实体侧，本申请实施例提供的一种定位方法，包括：
针对下行链路到达时间差DL-TDOA定位技术方案，接收参考终端上报的下行定位测量量信息和参考终端的位置信息，并接收目标终端上报的下行定位测量量信息；基于所述参考终端上报的下行定位测量量信息和参考终端的位置信息，以及目标终端上报的下行定位测量量信息，对目标终端进行定位；和/或
针对上行链路到达时间差UL-TDOA定位技术方案，接收参考终端上报 的参考终端的位置信息，并接收基站上报的参考终端的上行定位测量量信息，以及基站上报的目标终端的上行定位测量量信息；基于所述参考终端的上行定位测量量信息和所述参考终端的位置信息，以及目标终端的上行定位测量量信息，对目标终端进行定位。
可选地，所述基于所述参考终端上报的下行定位测量量信息和参考终端的位置信息，以及目标终端上报的下行定位测量量信息，对目标终端进行定位，包括：
根据获取的参考终端的位置信息和下行定位测量量信息，确定各个基站之间的时钟偏差；
根据所述时钟偏差对所述目标终端的下行定位测量量信息进行修正，确定关于目标终端的修正后的下行定位测量量信息；
根据所述目标终端的修正后的下行定位测量量信息，确定所述目标终端的位置信息。
可选地，所述基于所述基站上报的关于参考终端的上行定位测量量信息和所述参考终端的位置信息，以及基站上报的关于目标终端的上行定位测量量信息，对目标终端进行定位，包括：
根据获取的参考终端的位置信息和上行定位测量量信息，确定各个基站之间的时钟偏差；
根据所述时钟偏差对所述目标终端的上行定位测量量信息进行修正，确定关于目标终端的修正后的上行定位测量量信息；
根据所述目标终端的修正后的上行定位测量量信息，确定所述目标终端的位置信息。
可选地，所述修正后的下行定位测量量信息，包括：下行参考信号时间差(Reference Signal Time Difference，RSTD)测量值。
可选地，获取参考终端的位置信息和下行定位测量量信息之前，该方法还包括：
向终端发送下行定位参考信号配置信息；或者向基站发送下行定位参考 信号配置信息，由基站转发下行定位参考信号配置信息给终端。
可选地，根据所述时钟偏差对所述目标终端的下行定位测量量信息进行修正，确定关于目标终端的修正后的下行定位测量量信息，具体包括：
把所述时钟偏差通知给基站，使得基站校准基站之间的时钟偏差后，向目标终端发送下行定位参考信号或者接收来自目标终端的下行探测参考信号；将目标终端上报的下行RSTD或者基于目标终端上报的来自多个基站的下行到达时间(Time of Arrival，TOA)之差，直接赋值给修正后的RSTD；
或者，在位置解算过程中，将目标终端上报的RSTD值与所述时钟偏差的差值，作为所述修正后的下行定位测量量信息。
可选地，所述修正后的上行定位测量量信息，包括上行相对到达时间(Relative Time Of Arrival，RTOA)测量值。
可选地，获取参考终端的位置信息和上行定位测量量信息之前，该方法还包括：
向终端发送上行定位参考信号配置信息；或者向基站发送上行定位参考信号配置信息，由所述基站转发所述上行定位参考信号配置信息给所述终端。
可选地所述根据所述时钟偏差对所述目标终端的上行定位测量量信息进行修正，确定关于目标终端的修正后的上行定位测量量信息，具体包括：
把所述时钟偏差通知给基站，使得基站校准基站之间的时钟偏差后，接收来自所述目标终端的上行探测参考信号；将基站上报的上行RTOA，直接赋值给修正后的RTOA；
或者，在位置解算过程中，将基站关于所述目标终端上报的上行RTOA值与所述时钟偏差的差值，作为所述修正后的上行定位测量量信息。
在目标终端侧，本申请实施例提供的一种定位方法，包括：
确定定位参考信号配置信息；
针对下行链路到达时间差DL-TDOA定位技术方案，基于定位参考信号配置信息接收并测量来自不同基站的下行定位参考信号，确定下行定位测量量信息，并上报所述下行定位测量量信息；和/或
针对上行链路到达时间差UL-TDOA定位技术方案，基于定位参考信号配置信息发送上行定位参考信号。
可选地，所述下行定位测量量信息，包括：下行定位测量量和/或者下行定位测量量的可靠性指示，其中，所述可靠性指示是下行定位测量量的误差估计值的标准差和/或方差，用于指示下行定位测量量的可靠性。
可选地，所述定位参考信号配置信息，是位置管理功能LMF实体或基站提供的。
在基站侧，本申请实施例提供的一种定位方法，包括：
向终端发送定位参考信号配置信息；
针对下行链路到达时间差DL-TDOA定位技术方案，向参考终端发送下行定位参考信号，接收参考终端上报的下行定位测量量信息和参考终端的位置信息，并转发给位置管理功能LMF实体；和/或
针对上行链路到达时间差UL-TDOA定位技术方案，接收并测量参考终端发送的上行定位参考信号以获得上行定位测量量信息，向LMF实体上报所述上行定位测量量信息，并转发参考终端上报的参考终端的位置信息。
可选地，该方法还包括：
当收到LMF实体通知的基站之间的时钟偏差时，根据所述时钟偏差校准本地基站的时钟偏差；
针对下行链路到达时间差DL-TDOA定位技术方案，向目标终端发送下行定位参考信号，接收目标终端上报的下行定位测量量信息，并转发给LMF实体；
针对上行链路到达时间差UL-TDOA定位技术方案，接收并测量目标终端发送的上行定位参考信号以获得目标终端的上行定位测量量信息，向LMF实体上报所述目标终端的上行定位测量量信息。
在参考终端侧，本申请实施例提供的一种定位装置，包括：
存储器，用于存储程序指令；
处理器，用于调用所述存储器中存储的程序指令，按照获得的程序执行：
确定定位参考信号配置信息；
针对下行链路到达时间差DL-TDOA定位技术方案，基于定位参考信号配置信息接收并测量来自不同基站的下行定位参考信号，确定下行定位测量量信息，并上报所述下行定位测量量信息和参考终端的位置信息，使得LMF实体基于所述下行定位测量量信息和所述参考终端的位置信息对目标终端进行定位；和/或
针对上行链路到达时间差UL-TDOA定位技术方案，基于定位参考信号配置信息发送上行定位参考信号，并发送参考终端的位置信息，使得LMF实体基于所述上行定位参考信号和所述参考终端的位置信息对目标终端进行定位。
可选地，所述下行定位测量量信息，包括：下行定位测量量和/或者下行定位测量量的可靠性指示，其中，所述可靠性指示是下行定位测量量的误差估计值的标准差和/或方差，用于指示下行定位测量量的可靠性。
可选地，所述参考终端的位置信息，是参考终端基于预先配置的位置信息或者通过独立无线接入技术RAT-independent定位方案确定的。
可选地，所述定位参考信号配置信息，是位置管理功能LMF实体或基站提供的。
在LMF实体侧，本申请实施例提供的一种定位装置，包括：
存储器，用于存储程序指令；
处理器，用于调用所述存储器中存储的程序指令，按照获得的程序执行：
针对下行链路到达时间差DL-TDOA定位技术方案，接收参考终端上报的下行定位测量量信息和参考终端的位置信息，并接收目标终端上报的下行定位测量量信息；基于所述参考终端上报的下行定位测量量信息和参考终端的位置信息，以及目标终端上报的下行定位测量量信息，对目标终端进行定位；和/或
针对上行链路到达时间差UL-TDOA定位技术方案，接收参考终端上报的参考终端的位置信息，并接收基站上报的参考终端的上行定位测量量信息， 以及基站上报的目标终端的上行定位测量量信息；基于所述参考终端的上行定位测量量信息和所述参考终端的位置信息，以及目标终端的上行定位测量量信息，对目标终端进行定位。
可选地，所述基于所述参考终端上报的下行定位测量量信息和参考终端的位置信息，以及目标终端上报的下行定位测量量信息，对目标终端进行定位，所述处理器具体用于调用所述存储器中存储的程序指令，按照获得的程序执行：
根据获取的参考终端的位置信息和下行定位测量量信息，确定各个基站之间的时钟偏差；
根据所述时钟偏差对所述目标终端的下行定位测量量信息进行修正，确定关于目标终端的修正后的下行定位测量量信息；
根据所述目标终端的修正后的下行定位测量量信息，确定目标终端的位置信息。
可选地，所述根据所述时钟偏差对所述目标终端的上行定位测量量信息进行修正，确定关于目标终端的修正后的上行定位测量量信息，所述处理器具体用于调用所述存储器中存储的程序指令，按照获得的程序执行：
根据获取的参考终端的位置信息和上行定位测量量信息，确定各个基站之间的时钟偏差；
根据所述时钟偏差对所述目标终端的上行定位测量量信息进行修正，确定关于目标终端的修正后的上行定位测量量信息；
根据所述目标终端的修正后的上行定位测量量信息，确定所述目标终端的位置信息。
可选地，所述修正后下行的定位测量量信息，包括：下行参考信号时间差RSTD测量值。
可选地，获取参考终端的位置信息和下行定位测量量信息之前，所述处理器还用于调用所述存储器中存储的程序指令，按照获得的程序执行：
向终端发送下行定位参考信号配置信息；或者向基站发送下行定位参考 信号配置信息，由基站转发下行定位参考信号配置信息给终端。
可选地，根据所述时钟偏差，确定关于目标终端的修正后的下行定位测量量信息，所述处理器具体用于：
把所述时钟偏差通知给基站，使得基站校准基站之间的时钟偏差后，向目标终端发送下行定位参考信号或者接收来自目标终端的下行探测参考信号；将目标终端上报的RSTD或者基于目标终端上报的来自多个基站的下行到达时间TOA之差，直接赋值给修正后的RSTD；
或者，在位置解算过程中，将所述目标终端上报的RSTD值与所述时钟偏差的差值，作为所述修正后的下行定位测量量信息。
可选地，所述修正后的上行定位测量量信息，包括上行相对到达时间RTOA测量值。
可选地，获取参考终端的位置信息和上行定位测量量信息之前，所述处理器还用于调用所述存储器中存储的程序指令，按照获得的程序执行：
向终端发送上行定位参考信号配置信息；或者向基站发送上行定位参考信号配置信息，由所述基站转发所述上行定位参考信号配置信息给所述终端。
可选地，所述根据所述时钟偏差对所述目标终端的上行定位测量量信息进行修正，确定关于目标终端的修正后的上行定位测量量信息，所述处理器具体用于调用所述存储器中存储的程序指令，按照获得的程序执行：
把所述时钟偏差通知给基站，使得基站校准基站之间的时钟偏差后，接收来自所述目标终端的上行探测参考信号；将基站上报的上行RTOA，直接赋值给修正后的RTOA；
或者，在位置解算过程中，将基站关于所述目标终端上报的上行RTOA值与所述时钟偏差的差值，作为所述修正后的上行定位测量量信息。
在目标终端侧，本申请实施例提供的一种定位装置，包括：
存储器，用于存储程序指令；
处理器，用于调用所述存储器中存储的程序指令，按照获得的程序执行：
确定定位参考信号配置信息；
针对下行链路到达时间差DL-TDOA定位技术方案，基于定位参考信号配置信息接收并测量来自不同基站的下行定位参考信号，确定下行定位测量量信息，并上报所述下行定位测量量信息；和/或
针对上行链路到达时间差UL-TDOA定位技术方案，基于定位参考信号配置信息发送上行定位参考信号。
可选地，所述下行定位测量量信息，包括：下行定位测量量和/或者下行定位测量量的可靠性指示，其中，所述可靠性指示是下行定位测量量的误差估计值的标准差和/或方差，用于指示下行定位测量量的可靠性。
可选地，所述定位参考信号配置信息，是位置管理功能LMF实体或基站提供的。
可选地，所述处理器，还用于调用所述存储器中存储的程序指令，按照获得的程序执行：
确定并上报参考终端的位置信息。
在基站侧，本申请实施例提供的一种定位装置，包括：
存储器，用于存储程序指令；
处理器，用于调用所述存储器中存储的程序指令，按照获得的程序执行：
向终端发送定位参考信号配置信息；
针对下行链路到达时间差DL-TDOA定位技术方案，向参考终端发送下行定位参考信号，接收参考终端上报的下行定位测量量信息和参考终端的位置信息，并转发给LMF实体；和/或
针对上行链路到达时间差UL-TDOA定位技术方案，接收并测量参考终端发送的上行定位参考信号以获得上行定位测量量信息，向LMF实体上报所述上行定位测量量信息，并转发参考终端上报的参考终端的位置信息。
可选地，所述处理器还用于调用所述存储器中存储的程序指令，按照获得的程序执行：
当收到LMF实体通知的基站之间的时钟偏差时，根据所述时钟偏差校准本地基站的时钟偏差；
针对下行链路到达时间差DL-TDOA定位技术方案，向目标终端发送下行定位参考信号，接收目标终端上报的下行定位测量量信息，并转发给LMF实体；
针对上行链路到达时间差UL-TDOA定位技术方案，接收并测量目标终端发送的上行定位参考信号以获得目标终端的上行定位测量量信息，向LMF实体上报所述目标终端的上行定位测量量信息。
在参考终端侧，本申请实施例提供的另一种定位装置，包括：
配置信息确定单元，用于确定定位参考信号配置信息；
第一下行单元，用于针对下行链路到达时间差DL-TDOA定位技术方案，基于定位参考信号配置信息接收并测量来自不同基站的下行定位参考信号，确定下行定位测量量信息，并上报所述下行定位测量量信息和参考终端的位置信息，使得LMF基于所述下行定位测量量信息和所述参考终端的位置信息对目标终端进行定位；和/或
第一上行单元，用于针对上行链路到达时间差UL-TDOA定位技术方案，基于定位参考信号配置信息发送上行定位参考信号，并发送参考终端的位置信息，使得LMF基于所述上行定位参考信号和所述参考终端的位置信息对目标终端进行定位。
可选地，所述下行定位测量量信息，包括：下行定位测量量和/或者下行定位测量量的可靠性指示，其中，所述可靠性指示是下行定位测量量的误差估计值的标准差和/或方差，用于指示下行定位测量量的可靠性。
可选地，所述参考终端的位置信息，是参考终端基于预先配置的位置信息或者通过独立无线接入技术RAT-independent定位方案确定的。
可选地，所述定位参考信号配置信息，是LMF实体或基站提供的。
在LMF实体侧，本申请实施例提供的另一种定位装置，包括：
第一下行处理单元，用于针对下行链路到达时间差DL-TDOA定位技术方案，接收参考终端上报的下行定位测量量信息和参考终端的位置信息，并接收目标终端上报的下行定位测量量信息；基于所述参考终端上报的下行定 位测量量信息和参考终端的位置信息，以及目标终端上报的下行定位测量量信息，对目标终端进行定位；和/或
第一上行处理单元，用于针对上行链路到达时间差UL-TDOA定位技术方案，接收参考终端上报的参考终端的位置信息，并接收基站上报的参考终端的上行定位测量量信息，以及基站上报的目标终端的上行定位测量量信息；基于所述参考终端的上行定位测量量信息和所述参考终端的位置信息，以及目标终端的上行定位测量量信息，对目标终端进行定位。
可选地，所述第一下行处理单元具体用于：
根据获取的参考终端的位置信息和下行定位测量量信息，确定基站之间的时钟偏差；
根据所述时钟偏差对所述目标终端的下行定位测量量信息进行修正，确定关于目标终端的修正后的下行定位测量量信息；
根据所述目标终端的修正后的下行定位测量量信息，确定目标终端的位置信息。
可选地，所述第一上行处理单元具体用于：
根据获取的参考终端的位置信息和上行定位测量量信息，确定各个基站之间的时钟偏差；
根据所述时钟偏差对所述目标终端的上行定位测量量信息进行修正，确定关于目标终端的修正后的上行定位测量量信息；
根据所述目标终端的修正后的上行定位测量量信息，确定所述目标终端的位置信息。
可选地，所述修正后的下行定位测量量信息，包括：下行参考信号时间差RSTD测量值。
可选地，还包括第一发送单元，获取参考终端的位置信息和定位测量量信息之前，所述第一发送单元用于：
向终端发送下行定位参考信号配置信息；或者向基站发送下行定位参考信号配置信息，由所述基站转发所述下行定位参考信号配置信息给所述终端。
可选地，所述第一下行处理单元具体用于：
把所述时钟偏差通知给基站，使得基站校准基站之间的时钟偏差后，向所述目标终端发送下行定位参考信号；将所述目标终端上报的RSTD或者基于所述目标终端上报的来自多个基站的下行TOA之差，直接赋值给修正后的RSTD；
或者，在位置解算过程中，将目标终端上报的RSTD值或者基站与所述时钟偏差的差值，作为所述修正后的下行定位测量量信息。
可选地，所述修正后的上行定位测量量信息，包括上行相对到达时间RTOA测量值。
可选地，还包括第二发送单元，获取参考终端的位置信息和上行定位测量量信息之前，所述第二发送单元用于：
向终端发送上行定位参考信号配置信息；或者向基站发送上行定位参考信号配置信息，由所述基站转发所述上行定位参考信号配置信息给所述终端。
可选地，所述第一上行处理单元具体用于：
把所述时钟偏差通知给基站，使得基站校准基站之间的时钟偏差后，接收来自所述目标终端的上行探测参考信号；将基站上报的上行RTOA，直接赋值给修正后的RTOA；
或者，在位置解算过程中，将基站关于所述目标终端上报的上行RTOA值与所述时钟偏差的差值，作为所述修正后的上行定位测量量信息。
在目标终端侧，本申请实施例提供的另一种定位装置，包括：
配置信息确定单元，用于确定定位参考信号配置信息；
第二下行单元，用于针对下行链路到达时间差DL-TDOA定位技术方案，基于定位参考信号配置信息接收并测量来自不同基站的下行定位参考信号，确定下行定位测量量信息，并上报所述下行定位测量量信息；和/或
第二上行单元，用于针对上行链路到达时间差UL-TDOA定位技术方案，基于定位参考信号配置信息发送上行定位参考信号。
可选地，所述下行定位测量量信息，包括：下行定位测量量和/或者下行 定位测量量的可靠性指示，其中，所述可靠性指示是下行定位测量量的误差估计值的标准差和/或方差，用于指示下行定位测量量的可靠性。
可选地，所述定位参考信号配置信息，是位置管理功能LMF实体或基站提供的。
在基站侧，本申请实施例提供的另一种定位装置，包括：
配置信息发送单元，用于向终端发送定位参考信号配置信息；
第二下行处理单元，用于针对下行链路到达时间差DL-TDOA定位技术方案，向参考终端发送下行定位参考信号，接收参考终端上报的下行定位测量量信息和参考终端的位置信息，并转发给LMF实体；和/或
第二上行处理单元，用于针对上行链路到达时间差UL-TDOA定位技术方案，接收并测量参考终端发送的上行定位参考信号以获得上行定位测量量信息，向LMF实体上报所述上行定位测量量信息，并转发参考终端上报的参考终端的位置信息。
可选地，当收到所述LMF实体通知的基站之间的时钟偏差时，还包括校准单元：
所述校准单元，用于根据所述时钟偏差校准本地基站的时钟偏差；
所述第二下行处理单元，具体用于针对下行链路到达时间差DL-TDOA定位技术方案，向目标终端发送下行定位参考信号，接收所述目标终端上报的下行定位测量量信息，并转发给位置管理功能LMF实体；
所述第二上行处理单元，具体用于针对上行链路到达时间差UL-TDOA定位技术方案，接收并测量目标终端发送的上行定位参考信号以获得所述目标终端的上行定位测量量信息，向所述LMF实体上报所述目标终端的上行定位测量量信息。
本申请另一实施例提供了一种计算设备，其包括存储器和处理器，其中，所述存储器用于存储程序指令，所述处理器用于调用所述存储器中存储的程序指令，按照获得的程序执行上述任一种方法。
本申请另一实施例提供了一种计算机存储介质，所述计算机存储介质存 储有计算机可执行指令，所述计算机可执行指令用于使所述计算机执行上述任一种方法。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简要介绍，显而易见地，下面描述中的附图仅是本申请的一些实施例，对于本领域的普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的一种基站、终端、LMF实体之间的信号交互示意图；
图2为本申请实施例提供的另一种基站、终端、LMF实体之间的信号交互示意图；
图3为本申请实施例提供的第三种基站、终端、LMF实体之间的信号交互示意图；
图4为本申请实施例提供的参考终端侧的一种定位方法的流程示意图；
图5为本申请实施例提供的LMF实体侧的一种定位方法的流程示意图；
图6为本申请实施例提供的目标终端侧的一种定位方法的流程示意图；
图7为本申请实施例提供的基站侧的一种定位方法的流程示意图；
图8为本申请实施例提供的终端侧的一种定位装置的结构示意图；
图9为本申请实施例提供的网络侧的一种定位装置的结构示意图；
图10为本申请实施例提供的参考终端侧的一种定位装置的结构示意图；
图11为本申请实施例提供的LMF实体侧的一种定位装置的结构示意图；
图12为本申请实施例提供的目标终端侧的一种定位装置的结构示意图；
图13为本申请实施例提供的基站侧的一种定位装置的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行 清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，并不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在无线通信的用户终端定位系统中，基站之间的时钟偏差(即时间同步误差)是直接影响定位性能的关键问题之一。本申请实施例提供了定位方法及装置，用以基于参考UE消除基站间时钟偏差，提高UL-TDOA/DL-TDOA定位技术方案的UE定位精度。
本申请实施例提供了定位方法及装置，用以消除基站间时钟偏差，提高UL-TDOA/DL-TDOA定位技术方案的UE定位精度。
其中，方法和装置是基于同一申请构思的，由于方法和装置解决问题的原理相似，因此装置和方法的实施可以相互参见，重复之处不再赘述。
本申请实施例提供的技术方案可以适用于多种系统，尤其是5G系统。例如适用的系统可以是全球移动通讯(global system of mobile communication，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)通用分组无线业务(general packet radio service，GPRS)系统、长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)系统、5G系统以及5G NR系统等。这多种系统中均包括终端设备和网络设备。
本申请实施例涉及的终端设备，可以是指向用户提供语音和/或数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。在不同的系统中，终端设备的名称可能也不相同，例如在5G系统中，终端设备可以称为用户设备。无线终端设备可以经无线接入网(Radio AccessNetwork，RAN)与一个或多个核心网进行通信，无线终端设备可以是移动终端设备，如移动电话(或称为“蜂窝”电话)和具有移动终端设备的 计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(personal communication service，PCS)电话、无绳电话、会话发起协议(session initiated protocol，SIP)话机、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)等设备。无线终端设备也可以称为系统、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点(access point)、远程终端设备(remote terminal)、接入终端设备(access terminal)、用户终端设备(user terminal)、用户代理(user agent)、用户装置(user device)，本申请实施例中并不限定。
本申请实施例涉及的网络设备，可以是基站，该基站可以包括多个小区。根据具体应用场合不同，基站又可以称为接入点，或者可以是指接入网中在空中接口上通过一个或多个扇区与无线终端设备通信的设备，或者其它名称。网络设备可用于将收到的空中帧与网际协议(internet protocol，IP)分组进行相互转换，作为无线终端设备与接入网的其余部分之间的路由器，其中接入网的其余部分可包括网际协议(IP)通信网络。网络设备还可协调对空中接口的属性管理。例如，本申请实施例涉及的网络设备可以是全球移动通信系统(global system for mobile communications，GSM)或码分多址接入(code division multiple access，CDMA)中的网络设备(base transceiver station，BTS)，也可以是带宽码分多址接入(wide-band code division multiple access，WCDMA)中的网络设备(NodeB)，还可以是长期演进(long term evolution，LTE)系统中的演进型网络设备(evolutional node B，eNB或e-NodeB)、5G网络架构(next generation system)中的5G基站，也可是家庭演进基站(home evolved node B，HeNB)、中继节点(relay node)、家庭基站(femto)、微微基站(pico)等，本申请实施例中并不限定。
下面结合说明书附图对本申请各个实施例进行详细描述。需要说明的是，本申请实施例的展示顺序仅代表实施例的先后顺序，并不代表实施例所提供 的技术方案的优劣。
为了便于描述，在本申请实施例中所述的PRS代表所有可用于测量TOA的参考信号，例如它包括可用于传统DL-TDOA/UL-TDOA定位的PRS，信道状态指示参考信号(Channel State Indication Reference Signal，CSI-RS)，系统同步/物理广播信道块(SS/PBCH Block，System Synchronization/Physical Broadcast CHannel Block)，探测参考信号(Sounding Reference Signal，SRS)和物理随机接入信道(Physical Random Access CHannel，PRACH)等。本申请实施例中可以统称这样的参考信号为定位参考信号。
本申请实施例提供的技术方案，包括：
参考UE首先基于预先配置的UE位置或者通过辅助全球导航卫星定位系统(Assisted-Global NavigationSatellite System，A-GNSS)等独立无线接入技术(RAT-independent)定位技术方案计算得到UE位置，然后分为两种情况处理：
1)针对DL-TDOA定位技术方案，参考UE接收和测量来自不同基站的下行定位参考信号(PRS)，获得下行定位测量量信息(包括但不限于：下行RSTD测量值、下行TOA测量值)，然后向LMF实体或者基站上报该参考UE的位置信息以及所述下行定位测量量信息；
2)针对UL-TDOA定位技术方案，参考UE向LMF或者基站上报该参考UE的位置信息，并且向基站发送上行PRS，用于基站接收该参考UE发送的上行PRS以获得上行定位测量量信息(即上行RTOA值)，然后基站向LMF上报上行定位测量量信息和该参考UE的位置信息。
本申请实施例所述的参考UE，即辅助对目标UE进行定位的UE。
LMF基于参考UE上报的参考UE的位置信息以及上/下行定位测量量信息，计算得到各个基站之间的时钟偏差。然后，LMF针对终端协助(UE-assisted，即所述的参考UE辅助定位)定位有两种处理方法：
1)、LMF把该时钟偏差通知给各个基站，各个基站在校准时钟偏差之后向目标UE发送PRS或者接收来自目标UE的上行PRS；
2)、LMF不把时钟偏差通知给各个基站，各个基站不校准时钟偏差，由 LMF在位置解算时针对目标UE上报的RSTD值消除该时钟偏差的影响。
由于本申请实施例中处理后的目标UE的定位测量量信息(下行RSTD测量值，或者上行RTOA测量值)中已经消除了时钟偏差的影响，可以保证DL-TDOA或者UL-TDOA定位技术方案的UE定位精度。
下面分别从不同设备侧详细描述本申请实施例提供的技术方案。
参考UE(也可以称为第一UE)侧的处理流程包括：
Step 1：参考UE基于预先配置的位置或者通过独立无线接入技术(RAT-independent)定位方案(例如：A-GNSS等)计算得到该参考UE的位置信息。
Step 2：接收LMF或者基站提供的下行PRS配置信息或者上行PRS配置信息。
其中，下行PRS配置信息包括下行PRS的时频位置、参考基站编号信息等，上行PRS配置信息包括上行PRS的时频位置、参考基站编号信息等，所述配置信息通过LTE定位协议(LTE Positioning Protocol，LPP)信令或者无线资源控制(Radio Resource Control，RRC)信令传输。
其中，下行PRS包括新空口(New Radio，NR)PRS、信道状态指示参考信号(Channel State Indication Reference Signal，CSI-RS)、系统同步/物理广播信道块(SS/PBCH Block，System Synchronization/Physical Broadcast CHannel Block)等；上行PRS包括探测参考信号(Sounding Reference Signal，SRS)和物理随机接入信道(Physical Random Access CHannel，PRACH)等。
所述参考基站主要是指用于RSTD计算时的基站。
Step 3：参考UE针对DL-TDOA和UL-TDOA定位技术方案分为两种情况处理：针对DL-TDOA定位技术方案，进入Step4；针对UL-TDOA定位技术方案，进入Step5。
Step 4：针对DL-TDOA定位技术方案的处理：
Step 4.1、参考UE接收并测量来自不同基站的下行定位参考信号(PRS)，获得下行定位测量量(包括但不限于：下行RSTD、下行TOA)和/或者下行 定位测量量的可靠性指示，其中，可靠性指示是下行定位测量量的误差估计值的标准差和/或方差，用于指示该测量量的可靠性，标准差和/或方差越大，可靠性越小，反之，可靠性越大；
Step 4.2、参考UE向LMF实体或者基站上报Step 4.1获得的下行定位测量量和/或者下行定位测量量的可靠性指示，以及Step 1获得的参考UE的位置信息。
Step 5：针对UL-TDOA定位技术方案的处理：
Step 5.1、参考UE向基站发送上行PRS；
Step 5.2、参考UE向LMF实体或者基站上报Step 1中获得的该参考UE的位置信息。
LMF实体侧的处理流程包括：
Step 1：LMF实体向UE发送下行PRS配置信息或者上行PRS配置信息，或者LMF向基站发送下行PRS配置信息或者上行PRS配置信息，然后由基站转发给UE。
Step 2：LMF实体接收参考UE上报的参考UE的位置信息，以及参考UE上报的下行定位测量量信息(包括但不限于：下行RSTD测量值、下行TOA测量值)，或者基站上报的上行定位测量量信息(即上行RTOA值)。
Step 3：LMF实体根据Step 2中收到参考UE上报的参考UE的位置信息，以及参考UE上报的下行定位测量量信息或者基站上报的上行定位测量量信息，计算得到各个基站之间的时钟偏差。
不失一般性，假设基站1是参考基站，基站2是非参考基站，UE_ref表示参考UE，T1表示基站2和基站1之间的时钟偏差，RSTD(基站2,基站1->UE_ref)表示参考UE上报的基站2和基站1之间的RSTD，d(基站2->UE_ref)和d(基站1->UE_ref)分别表示基站2和参考UE之间的理想距离、基站1和参考UE之间的理想距离，单位是米，c表示光速，单位是米/秒。下面根据参考终端或者基站上报的定位测量量信息的不同，分为三种情况(CASE)介绍LMF如何计算得到基站之间的时钟偏差。
CASE 1：当参考终端上报的下行定位测量量信息是下行RSTD测量值时，可得以下两个计算公式：
RSTD(基站2,基站1->UE_ref)＝RSTD_perfect(基站2,基站1->UE_ref)+T1    (1)
RSTD_perfect(基站2,基站1->UE_ref)＝d(基站2->UE_ref)/c–d(基站1->UE_ref)/c    (2)
通过联立计算公式(1)和公式(2)就可以得到基站2和基站1之间的时钟偏差T1。
在CASE1中，如果有两个或者两个以上的参考UE同时上报时，当上报RSTD时选择了同一个参考基站时(由参考UE自主选择参考基站，或者LMF配置参考基站)，LMF实体把各个时钟偏差做处理(例如：算术平均，或者基于定位测量量可靠性指示的加权平均等)获得处理后的时钟偏差。
当多个参考UE选择的参考基站不是同一个基站时，LMF实体将通过一定的算法处理获得任意两个基站之间的时钟偏差值，基本原理在于任意两个基站的时钟偏差之间存在线性关系。
CASE 2：当参考终端上报的下行定位测量量信息是不同基站到达参考UE的下行TOA时，
TOA(基站1->UE_ref)＝TOA_perfect(基站1->UE_ref)+0    (3)
TOA(基站2->UE_ref)＝TOA_perfect(基站2->UE_ref)+T1    (4)
公式(4)-公式(3)可得公式(1)。其中，RSTD(基站2,基站1->UE_ref)＝TOA(基站2->UE_ref)-TOA(基站1->UE_ref)；RSTD_perfect＝TOA_perfect(基站2->UE_ref)-TOA_perfect(基站1->UE_ref)。
然后采用与CASE1相同的方法可以得到基站2和基站1之间的时钟偏差取值T1。
在CASE 2中，由于参考终端上报的不是下行RSTD测量值，而是下行 TOA，如果有两个以上的参考UE同时上报时，针对多个参考UE在计算RSTD时选择同一个参考基站。
CASE 3：当基站上报的上行定位测量量信息是不同基站基于上行PRS测量信息获得的上行RTOA时，
RTOA(基站1->UE_ref)＝RTOA_perfect(基站1->UE_ref)+0    (5)
RTOA(基站2->UE_ref)＝RTOA_perfect(基站2->UE_ref)+T1    (6)
公式(6)-公式(5)可得公式(1)。其中，RSTD(UE_ref->基站2,基站1)＝RTOA(UE_ref->基站2)-RTOA(UE_ref->基站1)；RSTD_perfect＝RTOA_perfect(UE_ref->基站2)-RTOA_perfect(UE_ref->基站1)。
然后采用与CASE1相同的方法可以得到基站2和基站1之间的时钟偏差取值T1。
在CASE 3中，由于基站针对目标终端上报的不是下行RSTD测量值，而是上行RTOA，如果有基站针对两个以上的参考UE同时上报时，针对多个参考UE在计算修正的上行RTOA时选择同一个参考基站。
Step 4：基于Step 3中LMF实体计算得到的时钟偏差T1，LMF实体采用以下两种方法之一处理：
方法1)、针对终端协助(UE-assisted)定位，LMF实体把该时钟偏差T1通知给各个基站，各个基站可以校准之间的时钟偏差，然后基站向目标UE发送下行PRS或者接收来自目标UE的上行PRS；
方法2)、针对UE-assisted定位，LMF实体不把时钟偏差T1通知给各个基站，各个基站不校准相互之间的时钟偏差，由LMF实体在位置解算时针对目标UE上报的RSTD值或者基站关于目标UE上报的上行RTOA值减去该时钟偏差。
也就是，将目标UE上报的RSTD值与该时钟偏差的差值，作为修正后的下行定位测量量信息，或者将基站关于目标终端上报的上行RTOA的值与该 时钟偏差的差值，作为修正后的下行定位测量量信息。
Step 5：LMF实体接收目标UE上报的下行定位测量量信息(包括但不限于：下行RSTD测量值、下行TOA测量值)，或者基站上报的上行定位测量量信息(RTOA值)，针对Step 4中两种方法分别进行处理：
针对方法1，把目标UE上报的下行RSTD测量值或者基于目标UE上报的来自两个基站的下行TOA测量值之差，直接赋值给修正后的RSTD测量值；或者，把基站上报的上行定位测量量信息(RTOA值)，直接赋值给修正后的RTOA测量值。
针对方法2，LMF实体结合Step 4中得到的基站之间时钟偏差T1进行时钟偏差消除操作，得到修正后的下行RSTD测量值或者上行RTOA测量值。下面以下行为例进行说明。假设基站1是参考基站，基站2是非参考基站，UE_target表示目标UE，T1表示Step3中计算得到的基站2和基站1之间的时钟偏差，RSTD(基站2,基站1->UE_target)表示参考UE上报的基站2和基站1之间的下行RSTD测量值，时钟偏差消除操作如公式(7)所示。
RSTD_modify(基站2,基站1->UE_target)＝RSTD(基站2,基站1->UE_target)-T1    (7)
Step 6：LMF实体基于Step 5获得的修正后的下行RSTD测量值或者上行RTOA测量值，进行目标UE的位置解算操作(基于现有的Chan算法等)，得到目标UE的位置信息。
目标UE(也可以称为第二UE)的处理流程包括：
Step 1：目标UE接收LMF实体或者基站提供的下行PRS配置信息或者上行PRS配置信息，其中，下行PRS配置信息包括下行PRS的时频位置、参考基站编号信息等，上行PRS配置信息包括上行PRS的时频位置、参考基站编号信息等，所述配置信息通过LPP信令或者RRC信令传输。
Step 2：目标UE针对DL-TDOA和UL-TDOA定位技术方案分为两种情况处理：针对DL-TDOA定位技术方案，进入Step 3；针对UL-TDOA定位技术方案，进入Step 4。
Step 3：针对DL-TDOA定位技术方案的处理：
Step 3.1、目标UE接收并测量来自不同基站的下行定位参考信号(PRS)，获得下行定位测量量(包括但不限于：下行RSTD、下行TOA)和/或者下行定位测量量的可靠性指示。
Step 3.2、目标UE向LMF上报Step 3.1获得的下行定位测量量和/或者下行定位测量量的可靠性指示。
Step 4：针对UL-TDOA定位技术方案的处理：
Step 4.1、目标UE基站发送上行PRS。
基站(适用于所有基站)侧的处理流程包括：
Step 1：基站接收LMF实体发送的下行PRS配置信息或者上行PRS配置信息，然后向UE转发该配置信息。
Step 2：针对DL-TDOA和UL-TDOA定位技术方案分为两种情况处理：针对DL-TDOA定位技术方案，进入Step 3；针对UL-TDOA定位技术方案，进入Step 4。
Step 3：针对DL-TDOA定位技术方案的处理：
Step 3.1：基站向参考UE发送下行PRS。
Step 3.2：基站接收参考UE上报的下行定位测量量信息和参考UE的位置信息，并且向LMF实体转发，其中，下行定位测量量信息包括但不限于：下行RSTD测量值、下行TOA测量值。
Step 4：针对UL-TDOA定位技术方案的处理：
Step 4.1：基站接收并测量参考UE发送的上行PRS以获得上行定位测量量信息(即上行RTOA值)；
Step 4.2：基站向LMF实体上报上行定位测量量信息，并转发参考UE上报的参考UE的位置信息。
Step 5：基于LMF实体的Step4中方法1，当基站收到LMF实体通知的时钟偏差T1时，各个基站单独校准各自的时钟偏差，然后针对DL-TDOA和UL-TDOA定位技术方案分为两种情况处理：针对DL-TDOA定位技术方案， 进入Step 6；针对UL-TDOA定位技术方案，进入Step7。
Step 6：针对DL-TDOA定位技术方案的处理：
Step 6.1：基站向目标UE发送下行PRS。
Step 6.2：基站接收目标UE上报的下行定位测量量信息，并且向LMF实体转发，其中，下行定位测量量信息包括但不限于：下行RSTD测量值、下行TOA测量值。
Step 7：针对UL-TDOA定位技术方案的处理：
Step 7.1：基站接收并测量目标UE发送的上行PRS以获得上行定位测量量信息(即上行RTOA值)。
Step 7.2：基站向LMF上报上行定位测量量信息。
需要说明的是，本申请实施例中，参考UE、目标UE以及基站侧，关于如何确定是针对DL-TDOA定位技术方案的处理，还是针对UL-TDOA定位技术方案的处理，可以由LMF实体通过定位信令通知参考UE、目标UE以及基站，该定位信令，可以是包含定位参考信号配置信息的信令，也可以是单独的一条信令。若是单独的信令，可以在发送定位参考信号配置信息之前发送该定位信令，通知参考UE、目标UE以及基站需要针对DL-TDOA定位技术方案进行处理，或需要针对UL-TDOA定位技术方案进行处理。
下面给出几个具体实施例的介绍。
实施例1：单个参考UE、DL-TDOA定位。
实施例1中，单个参考UE、DL-TDOA定位、UE-assisted定位，参考终端上报的下行定位测量量信息是不同基站之间的RSTD值和/或者TOA值。LMF实体在step 4中，采用处理方法1：LMF实体把该时钟偏差T1通知给各个基站，各个基站可以校准之间的时钟偏差，然后基站发送PRS。
如图1所示，基站1为参考基站，基站2为非参考基站。第一UE#a是专用于定位的参考UE；第二UE#c是目标UE。
第一UE#a(参考UE)的处理流程包括：
Step 1：参考UE基于预先配置得到该参考UE的位置信息，或者通过 RAT-independent定位方案(例如：A-GNSS等)计算得到该参考UE的位置信息。
Step 2：接收LMF实体或者基站提供的下行PRS配置信息，其中，下行PRS配置信息包括下行PRS的时频位置、参考基站编号信息等，该配置信息通过LPP信令或者RRC信令传输。
Step 3：参考UE确定是针对DL-TDOA定位技术方案，需要进入Step4。
Step 4：针对DL-TDOA定位技术方案的处理：
Step 4.1、参考UE接收并测量来自不同基站的下行定位参考信号(PRS)，获得下行定位测量量(包括但不限于：不同基站之间的RSTD值、不同基站的TOA值)和/或者下行定位测量量的可靠性指示；
Step 4.2、参考UE向LMF实体或者基站上报Step 4.1获得的下行定位测量量和/或者下行定位测量量的可靠性指示，以及Step 1获得的参考UE的位置信息。
LMF实体的处理流程包括：
Step 1：LMF实体向UE发送下行PRS配置信息或者上行PRS配置信息，或者LMF实体向基站发送下行PRS配置信息或者上行PRS配置信息，然后由基站转发给UE。
Step 2：LMF实体接收参考UE上报的参考UE的位置信息和下行定位测量量信息(包括但不限于：不同基站之间的RSTD值、不同基站的单独TOA值)。
Step 3：LMF实体根据Step 2中收到的参考UE上报的参考UE的位置信息，以及参考UE上报的下行定位测量量信息，计算得到各个基站之间的时钟偏差。
不失一般性，假设基站1是参考基站，基站2是非参考基站，UE_ref表示参考UE，T1表示基站2和基站1之间的时钟偏差，RSTD(基站2,基站1->UE_ref)表示参考UE上报的基站2和基站1之间的RSTD值，d(基站2->UE_ref)和d(基站1->UE_ref)分别表示基站2、基站1和参考UE之间的理 想距离，单位是米，c表示光速，单位是米/秒。下面根据参考终端上报的定位测量量信息的不同，分为两种CASE介绍LMF实体如何计算得到基站之间的时钟偏差。
CASE 1：当参考终端上报的下行定位测量量信息是不同基站之间的RSTD值时，可得以下两个计算公式：
RSTD(基站2,基站1->UE_ref)＝RSTD_perfect(基站2,基站1->UE_ref)+T1    (8)
RSTD_perfect(基站2,基站1->UE_ref)＝d(基站2->UE_ref)/c–d(基站1->UE_ref)/c    (9)
通过联立计算公式(8)和公式(9)就可以得到基站2和基站1之间的时钟偏差T1。
CASE 2：当参考终端上报的下行定位测量量信息是不同基站到达参考UE的TOA值时，可得：
TOA(基站1->UE_ref)＝TOA_perfect(基站1->UE_ref)+0    (10)
TOA(基站2->UE_ref)＝TOA_perfect(基站2->UE_ref)+T1    (11)
公式(11)-公式(10)可得公式(8)。其中，RSTD(基站2,基站1->UE_ref)＝TOA(基站2->UE_ref)-TOA(基站1->UE_ref)；RSTD_perfect＝TOA_perfect(基站2->UE_ref)-TOA_perfect(基站1->UE_ref)。
然后采用与CASE1相同的方法可以得到基站2和基站1之间的时钟偏差取值T1。
Step 4：基于Step 3中LMF计算得到的时钟偏差T1，LMF实体采用以下方法处理：
针对UE-assisted定位，LMF实体把该时钟偏差T1通知给各个基站，各个基站可以校准之间的时钟偏差，然后基站向目标UE发送下行PRS或者接收来自目标UE的上行PRS。
Step 5：LMF实体接收目标UE上报的下行定位测量量信息(包括但不限于：下行RSTD测量值、下行TOA测量值)，进行如下处理：
把目标UE上报的RSTD值或者基于目标UE上报的来自两个基站的TOA值之差，直接赋值给修正后的RSTD测量值。
RSTD_modify(基站2,基站1->UE_target)＝RSTD(基站2,基站1->UE_target)    (12)
Step 6：LMF实体基于Step 5获得的修正后的RSTD测量值，进行目标UE的位置解算操作(基于现有算法)，得到目标UE的位置信息。
第二UE#c(目标UE)的处理流程包括：
Step 1：目标UE接收LMF实体或者基站提供的下行PRS配置信息，其中，下行PRS配置信息包括下行PRS的时频位置和参考基站编号信息等，该配置信息通过LPP信令或者RRC信令传输。
Step 2：目标UE确定是DL-TDOA定位技术方案，进入Step 3。
Step 3：针对DL-TDOA定位技术方案的处理：
Step 3.1、目标UE接收并测量来自不同基站的下行定位参考信号(PRS)，获得下行定位测量量(包括但不限于：不同基站之间的RSTD值、不同基站的TOA值)和/或者下行定位测量量的可靠性指示；
Step 3.2、目标UE向LMF实体上报Step3获得的下行定位测量量信息。
基站(适用于参考基站#1和非参考基站#2)的处理流程包括：
Step 1：参考基站接收LMF实体的下行PRS配置信息或者上行PRS配置信息，然后向UE转发该配置信息。
Step 2：确定是DL-TDOA定位技术方案，进入Step 3。
Step 3：针对DL-TDOA定位技术方案的处理：
Step 3.1：基站向参考UE发送下行PRS；
Step 3.2：基站接收参考UE上报的下行定位测量量信息和参考UE的位置信息，并且向LMF实体转发，其中，下行定位测量量信息包括但不限于：不同基站之间的RSTD值、不同基站的单独TOA值。
Step 5：基于LMF实体的Step4，当基站收到LMF实体通知的时钟偏差T1时，各个基站单独校准各自的时钟偏差，然后针对DL-TDOA定位技术方案，进入Step 6。
Step 6：针对DL-TDOA定位技术方案的处理：
Step 6.1：基站向目标UE发送下行PRS；
Step 6.2：基站接收目标UE上报的下行定位测量量信息，并且向LMF实体转发，其中，下行定位测量量信息包括但不限于：不同基站之间的RSTD值、不同基站的单独TOA。
实施例2：多个参考UE、DL-TDOA定位。
实施例2中，参考终端上报的下行定位测量量信息是不同基站之间的RSTD值。LMF实体在step 4中，采用处理方法2，即LMF实体不把时钟偏差T1通知给各个基站，各个基站不校准相互之间的时钟偏差，由LMF实体在位置解算时针对目标UE上报的RSTD值减去该时钟偏差。
如图2所示，第一UE#a和第一UE#b是专用于定位测量的参考UE；第二UE#c是目标UE。
第一UE(参考UE)的处理流程包括：
Step 1：参考UE基于预先配置的位置信息或者通过RAT-independent定位方案(例如：A-GNSS等)计算得到该参考UE的位置信息。
Step 2：接收LMF实体或者基站提供的下行PRS配置信息，其中，下行PRS配置信息包括下行PRS的时频位置、参考基站编号信息等，该配置信息通过LPP信令或者RRC信令传输。
Step 3：参考UE确定是DL-TDOA定位技术方案，进入Step4。
Step 4：针对DL-TDOA定位技术方案的处理：
Step 4.1、参考UE接收并测量来自不同基站的下行定位参考信号(PRS)，获得下行定位测量量(包括但不限于：下行RSTD、下行TOA)和/或者下行定位测量量的可靠性指示；
Step 4.2、参考UE向LMF实体或者基站上报Step 4.1获得的下行定位测 量量信息以及Step 1获得的参考UE的位置信息。
LMF实体的处理流程包括：
Step 1：LMF实体向UE发送下行PRS配置信息，或者LMF实体向基站发送下行PRS配置信息，然后由基站转发给UE。
Step 2：LMF实体接收参考UE上报的参考UE的位置信息，以及参考UE上报的下行定位测量量信息(包括但不限于：下行RSTD测量值、下行TOA测量值)。
Step 3：LMF实体根据Step 2中收到参考UE上报的参考UE的位置信息，以及参考UE上报的下行定位测量量信息，计算得到各个基站之间的时钟偏差。
不失一般性，UE_ref表示参考UE a和b，T1表示基站2和基站1之间的时钟偏差，RSTD(基站2,基站1->UE_ref)表示参考UE上报的基站2和基站1之间的RSTD，d(基站2->UE_ref)和d(基站1->UE_ref)分别表示基站2、基站1和参考UE之间的理想距离，单位是米，c表示光速，单位是米/秒。下面根据参考终端或者基站上报的定位测量量信息的不同，分为三种CASE介绍LMF实体如何计算得到基站之间的时钟偏差。
CASE 1：当多个参考UE选择的参考基站是同一个基站时(两个参考UE都假设基站1是参考基站，基站2是非参考基站)，当参考终端a和参考终端b上报的下行定位测量量信息是下行RSTD测量值时，可得以下四个公式：
RSTD(基站2,基站1->UE a)＝RSTD_perfect(基站2,基站1->UE a)+T1(a)    (13)
RSTD_perfect(基站2,基站1->UE a)＝d(基站2->UE a)/c–d(基站1->UE a)/c    (14)
RSTD(基站2,基站1->UE b)＝RSTD_perfect(基站2,基站1->UE b)+T1(b)    (15)
RSTD_perfect(基站2,基站1->UE b)＝d(基站2->UE b)/c–d(基站1->UE b)/c    (16)
当上报RSTD时选择了同一个参考基站时(由参考UE自主选择参考基站， 或者LMF实体配置参考基站)，
联立公式(13)和公式(14)，可得基于参考UE a估计的基站2和基站1之间的时钟偏差T1(a)；联立公式(15)和公式(16)，可得基于参考UE b估计的基站2和基站1之间的时钟偏差T1(b)。LMF实体把两个时钟偏差T1(a)和T1(b)做处理(例如：算术平均，或者基于定位测量量可靠性指示的加权平均等)获得处理后的时钟偏差T1，例如：T1＝(T1(a)+T1(b))/2，或者T1＝(w1*T1(a)+(1-w1)*T1(b))/2。其中，w1为加权系数，取值为0到1之间。
CASE 2：当多个参考UE选择的参考基站不是同一个基站时，LMF实体将通过算法处理获得任意两个基站之间的时钟偏差值，基本原理在于任意两个基站的时钟偏差之间存在线性关系。
两个参考UE a和UE b分别假设基站1和基站2是参考基站，除了基站1、基站2之外还有基站3。
针对参考UE a可以获得基站2和基站3相对于参考基站1的下行RSTD测量值。假设T1(基站2,基站1)表示基站2相对于参考基站1的时钟偏差，T1(基站3,基站1)表示基站3相对于参考基站1的时钟偏差。
RSTD(基站2,基站1->UE a)＝RSTD_perfect(基站2,基站1->UE a)+T1(基站2,基站1)    (17)
RSTD_perfect(基站2,基站1->UE a)＝d(基站2->UE a)/c–d(基站1->UE a)/c   (18)
RSTD(基站3,基站1->UE a)＝RSTD_perfect(基站3,基站1->UE a)+T1(基站3,基站1)    (19)
RSTD_perfect(基站3,基站1->UE a)＝d(基站3->UE a)/c–d(基站1->UE a)/c    (20)
联立公式(17)到公式(20)可得，T1(基站2,基站1)和T1(基站3,基站1)。
针对参考UE b可以获得基站1和基站3相对于参考基站2的下行RSTD测量值。假设T2(基站1,基站2)表示基站1相对于参考基站2的时钟偏差，T2(基站3,基站2)表示基站3相对于参考基站2的时钟偏差。
RSTD(基站1,基站2->UE a)＝RSTD_perfect(基站1,基站2->UE a)+T2(基站1,基站2)    (21)
RSTD_perfect(基站1,基站2->UE a)＝d(基站1->UE a)/c–d(基站2->UE a)/c    (22)
RSTD(基站3,基站2->UE a)＝RSTD_perfect(基站3,基站2->UE a)+T2(基站3,基站2)    (23)
RSTD_perfect(基站3,基站2->UE a)＝d(基站3->UE a)/c–d(基站2->UE a)/c    (24)
联立公式(21)到公式(24)可得，T2(基站1,基站2)和T2(基站3,基站2)。
因此，综合考虑参考UE a和参考UE b得到的时钟偏差测量值，以基站1为基准，调整基站2和基站3相对于基站1的时钟偏差，例如：
基站2相对于基站1的时钟偏差为：(T1(基站2,基站1)-T2(基站1,基站2))/2。
基站3相对于基站1的时钟偏差为：(T1(基站3,基站1)+(T2(基站3,基站2)-T2(基站1,基站2))/2)/2。
除了采用上述方法，还可以结合定位测量量信息的质量指示，进行加权处理。例如：
基站2相对于基站1的时钟偏差为：(w1*T1(基站2,基站1)–(1-w1)*T2(基站1,基站2))/2。
基站3相对于基站1的时钟偏差为：(w1*T1(基站3,基站1)+(1-w1)*(T2(基站3,基站2)-T2(基站1,基站2))/2)/2。
其中，w1为加权系数，取值为0到1之间。
Step 4：基于Step 3中LMF实体计算得到的时钟偏差T1，LMF采用方法2处理：
方法2)、针对UE-assisted定位，LMF实体不把时钟偏差T1通知给各个基站，各个基站不校准相互之间的时钟偏差，由LMF实体在位置解算时针对目标UE上报的RSTD值减去该时钟偏差。
Step 5：LMF实体接收目标UE上报的下行定位测量量信息(包括但不限于：下行RSTD测量值、下行TOA测量值)，LMF实体结合Step 4中得到的基站之间时钟偏差T1进行时钟偏差消除操作，得到修正后的RSTD测量值。
不失一般性，假设基站1是参考基站，基站2是非参考基站，UE_target表示目标UE，T1表示Step3中计算得到的基站2和基站1之间的时钟偏差，RSTD(基站2,基站1->UE_target)表示参考UE上报的基站2和基站1之间的下行RSTD测量值，时钟偏差消除操作如公式(25)所示。
RSTD_modify(基站2,基站1->UE_target)＝RSTD(基站2,基站1->UE_target)-T1    (25)
Step 6：LMF基于Step 5获得的修正后的RSTD测量值，进行目标UE的位置解算操作(基于现有的Chan算法等)，得到目标UE的位置信息。
第二UE(目标UE)的处理流程包括：
Step 1：目标UE接收LMF实体或者基站提供的下行PRS配置信息，其中，下行PRS配置信息包括下行PRS的时频位置、参考基站编号信息等，该配置信息通过LPP信令或者RRC信令传输。
Step 2：目标UE确定是DL-TDOA定位技术方案，进入Step 3。
Step 3：针对DL-TDOA定位技术方案的处理：
Step 3.1、目标UE接收并测量来自不同基站的下行定位参考信号(PRS)，获得下行定位测量量(包括但不限于：下行RSTD、下行TOA)和/或者下行定位测量量的可靠性指示；
Step 3.2、目标UE向LMF实体上报Step3.1获得的下行定位测量量和/或者下行定位测量量的可靠性指示。
基站(适用于参考基站和非参考基站)的处理流程包括：
Step 1：参考基站接收LMF实体的下行PRS配置信息，然后向UE转发该配置信息。
Step 2：确定是DL-TDOA定位技术方案，进入Step 3。
Step 3：针对DL-TDOA定位技术方案的处理：
Step 3.1：基站向参考UE发送下行PRS；
Step 3.2：基站接收参考UE上报的下行定位测量量信息和参考UE的位置信息，并且向LMF实体转发，其中，下行定位测量量信息包括但不限于：下行RSTD测量值、下行TOA测量值。
Step 5：基于LMF实体的Step4中，当基站收到LMF实体通知的时钟偏差T1时，各个基站单独校准各自的时钟偏差，然后针对DL-TDOA定位技术方案，进入Step 6。
Step 6：针对DL-TDOA定位技术方案的处理：
Step 6.1：基站向目标UE发送下行PRS；
Step 6.2：基站接收目标UE上报的下行定位测量量信息，并且向LMF实体转发，其中，下行定位测量量信息包括但不限于：下行RSTD测量值、下行TOA测量值。
实施例3：单个参考UE、UL-TDOA定位。
实施例1中，单个参考UE、UL-TDOA定位、UE-assisted定位，基站接收参考UE发送的上行PRS，获得并且向LMF实体上报的上行定位测量量信息(上行RTOA值)。LMF实体在step 4中，采用处理方法1：LMF实体把该时钟偏差T1通知给各个基站，各个基站可以校准之间的时钟偏差，然后基站接收上行PRS。
如图3所示，基站1为参考基站，基站2为非参考基站。第一UE a是专用于定位的参考UE；第二UE c是目标UE。
第一UE(参考UE)的处理流程包括：
Step 1：参考UE基于预先配置的位置信息或者通过RAT-independent定位方案(例如：A-GNSS等)计算得到该参考UE的位置信息。
Step 2：接收LMF实体或者基站提供的上行PRS配置信息，其中，上行PRS配置信息包括上行PRS的时频位置、参考基站编号信息等，该配置信息通过LPP信令或者RRC信令传输。
Step 3：参考UE确定是针对UL-TDOA定位技术方案的处理，进入Step5。
Step 5：针对UL-TDOA定位技术方案的处理：
Step 5.1、参考UE基站发送上行PRS；
Step 5.2、参考UE向LMF实体或者基站上报Step 1中获得的该参考UE的位置信息。
LMF实体的处理流程包括：
Step 1：LMF实体向UE发送上行PRS配置信息，或者LMF实体向基站发送上行PRS配置信息，然后由基站转发给UE。
Step 2：LMF实体接收参考UE上报的参考UE的位置信息，以及基站上报的上行定位测量量信息(即上行RTOA值)。
Step 3：LMF实体根据Step 2中收到参考UE上报的参考UE的位置信息，以及基站上报的上行定位测量量信息，计算得到各个基站之间的时钟偏差。
不失一般性，假设基站1是参考基站，基站2是非参考基站，UE_ref表示参考UE，T1表示基站2和基站1之间的时钟偏差，RSTD(基站2,基站1->UE_ref)表示参考UE上报的基站2和基站1之间的RSTD，d(基站2->UE_ref)和d(基站1->UE_ref)分别表示基站2、基站1和参考UE之间的理想距离，单位是米，c表示光速，单位是米/秒。下面根据参考终端或者基站上报的定位测量量信息为不同基站基于上行PRS测量获得的上行RTO，介绍LMF实体如何计算得到基站之间的时钟偏差。
当基站上报的上行定位测量量信息是不同基站基于上行PRS测量获得的上行RTOA值时，
RTOA(UE_ref->基站1)＝RTOA_perfect(基站1->UE_ref)+0    (26)
RTOA(UE_ref->基站2)＝RTOA_perfect(UE_ref->基站2)+T1    (27)
RTOA_perfect(UE_ref->基站1)＝d(UE_ref->基站1)/c-TOA_reference    (28)
RTOA_perfect(UE_ref->基站2)＝d(UE_ref->基站2)/c-TOA_reference     (29)
联立求解公式(26)到公式(29)可得基站2和基站1之间的时钟偏差T1。
如果有两个以上的参考UE同时上报时，针对多个参考UE在计算时钟偏差时选择同一个参考基站。
Step 4：基于Step 3中LMF实体计算得到的时钟偏差T1，LMF实体采用以下方法1处理：
方法1)针对UE-assisted定位，LMF实体把该时钟偏差T1通知给各个基站，各个基站可以校准之间的时钟偏差，然后基站向目标UE发送下行PRS或者接收来自目标UE的上行PRS。
Step 5：LMF实体接收基站上报的上行定位测量量信息(RTOA值)，针对Step 4中方法进行如下处理：
针对方法1，LMF实体把基站上报的上行定位测量量信息(RTOA值)，直接赋值给修正后的RTOA测量值。
Step 6：LMF实体基于Step 5获得的修正后的上行RTOA测量值，进行目标UE的位置解算操作(基于现有的Chan算法等)，得到目标UE的位置信息。
第二UE(目标UE)的处理流程包括：
Step 1：目标UE接收LMF实体或者基站提供的上行PRS配置信息，其中，上行PRS配置信息包括上行PRS的时频位置、参考基站编号信息等，该配置信息通过LPP信令或者RRC信令传输。
Step 2：目标UE确定是针对UL-TDOA定位技术方案的处理，进入Step 4。
Step 4：针对UL-TDOA定位技术方案的处理：
Step 4.1、目标UE基站发送上行PRS。
基站(参考基站和非参考基站)的处理流程包括：
Step 1：参考基站接收LMF实体的上行PRS配置信息，然后向UE转发该配置信息。
Step 2：确定是针对UL-TDOA定位技术方案的处理，进入Step 4。
Step 4：针对UL-TDOA定位技术方案的处理：
Step 4.1：基站接收并测量参考UE发送的上行PRS以获得上行定位测量量信息(即上行RTOA值)；
Step 4.2：基站向LMF实体上报上行定位测量量信息，并转发参考UE上报的参考UE的位置信息。
Step 5：基于LMF实体的Step4中方法1)，当基站收到LMF实体通知的时钟偏差T1时，各个基站单独校准各自的时钟偏差，然后针对UL-TDOA定位技术方案，进入Step7。
Step 7：针对UL-TDOA定位技术方案的处理：
Step 7.1：基站接收并测量目标UE发送的上行PRS以获得上行定位测量量信息(即上行RTOA值)；
Step 7.2：基站向LMF实体上报上行定位测量量信息。
综上所述，本申请实施例提出了一种基于参考UE的基站间时钟偏差消除方案。由于LMF实体处理后的目标UE的RSTD测量量信息中消除了时钟偏差的影响，可以提高DL-TDOA定位技术方案的UE定位精度。
在参考终端侧，参见图4，本申请实施例提供的一种定位方法，包括：
S401、确定定位参考信号配置信息；
例如，参考UE接收LMF实体或者基站提供的下行PRS配置信息或者上行PRS配置信息。
S402、针对下行链路到达时间差DL-TDOA定位技术方案，基于定位参考信号配置信息接收并测量来自不同基站的下行定位参考信号(例如：下行PRS)，确定下行定位测量量信息，并上报所述下行定位测量量信息和参考终端的位置信息，使得LMF实体基于所述下行定位测量量信息和所述参考终端的位置信息对目标终端进行定位；
参考UE还可以上报所述下行定位测量量信息和参考终端的位置信息给基站，由基站转发给LMF实体，最后由LMF实体基于所述下行定位测量量 信息和所述参考终端的位置信息对目标终端进行定位。
S403、针对上行链路到达时间差UL-TDOA定位技术方案，基于定位参考信号配置信息发送上行定位参考信号(例如：上行PRS)，并发送参考终端的位置信息，使得LMF实体基于所述上行定位参考信号和所述参考终端的位置信息对目标终端进行定位。
参考UE还可以发送上行定位参考信号给基站，发送参考终端的位置信息给LMF实体或者基站，若发送给基站，可以由基站转发参考终端的位置信息给LMF实体；基站接收上行定位参考信号并确定相应的上行定位测量量信息，然后发给LMF实体，LMF实体接收该上行定位测量量信息以及所述参考终端的位置信息，并基于上行定位测量量信息以及所述参考终端的位置信息确定基站之间的时钟偏差；根据所述时钟偏差对目标终端的上行定位测量量信息进行修正，确定关于目标终端的修正后的上行定位测量量信息；根据所述目标终端的修正后的上行定位测量量信息，确定目标终端的位置信息。
其中，所述定位参考信号配置信息，包括上行和/或下行的定位参考信号配置信息，针对下行链路到达时间差DL-TDOA定位技术方案，基于下行的定位参考信号配置信息接收并测量来自不同基站的下行定位参考信号；针对上行链路到达时间差UL-TDOA定位技术方案，基于上行的定位参考信号配置信息发送上行定位参考信号。
本申请实施例所述的定位参考信号，可以是PRS、CSI-RS、SS/PBCH Block、SRS和PRACH等，不限于PRS。
通过该方法，针对下行链路到达时间差DL-TDOA定位技术方案，基于定位参考信号配置信息接收并测量来自不同基站的下行定位参考信号，确定下行定位测量量信息，并上报所述下行定位测量量信息和参考终端的位置信息；针对上行链路到达时间差UL-TDOA定位技术方案，基于定位参考信号配置信息发送上行定位参考信号，并发送参考终端的位置信息，从而使得LMF实体可以基于参考UE上报的参考UE的位置信息以及上/下行定位测量量信息，计算得到各个基站之间的时钟偏差，并进而消除基站间时钟偏差，提高 了UL-TDOA/DL-TDOA定位技术方案的UE定位精度。
本申请实施例中所述的参考终端，即用于对目标终端进行定位的参考终端，可以是任意终端；
本申请实施例中所述的目标终端，即需要被定位的终端，也可以是任意终端。
可选地，所述下行定位测量量信息，包括：下行定位测量量和/或者下行定位测量量的可靠性指示，其中，所述可靠性指示是下行定位测量量的误差估计值的标准差和/或方差，用于指示下行定位测量量的可靠性。
可选地，所述参考终端的位置信息，是参考终端基于预先配置的位置信息或者通过独立无线接入技术RAT-independent定位方案确定的。
可选地，所述定位参考信号配置信息，是LMF实体或基站提供的。
参见图5，在LMF实体侧，本申请实施例提供的一种定位方法，包括：
S501、针对下行链路到达时间差DL-TDOA定位技术方案，接收参考终端上报的下行定位测量量信息和参考终端的位置信息，并接收目标终端上报的下行定位测量量信息；基于所述参考终端上报的下行定位测量量信息和参考终端的位置信息，以及目标终端上报的下行定位测量量信息，对目标终端进行定位；和/或
S502、针对上行链路到达时间差UL-TDOA定位技术方案，接收参考终端上报的参考终端的位置信息，并接收基站上报的参考终端的上行定位测量量信息，以及基站上报的目标终端的上行定位测量量信息；基于所述参考终端的上行定位测量量信息和所述参考终端的位置信息，以及目标终端的上行定位测量量信息，对目标终端进行定位。
可选地，所述基于所述参考终端上报的下行定位测量量信息和参考终端的位置信息，以及目标终端上报的下行定位测量量信息，对目标终端进行定位，包括：
根据获取的参考终端的位置信息和下行定位测量量信息，确定各个基站之间的时钟偏差；
根据所述时钟偏差对所述目标终端的下行定位测量量信息进行修正，确定关于目标终端的修正后的下行定位测量量信息；
根据所述目标终端的修正后的下行定位测量量信息，确定所述目标终端的位置信息。
可选地，所述基于所述基站上报的关于参考终端的上行定位测量量信息和所述参考终端的位置信息，以及基站上报的关于目标终端的上行定位测量量信息，对目标终端进行定位，包括：
根据获取的参考终端的位置信息和上行定位测量量信息，确定各个基站之间的时钟偏差；
根据所述时钟偏差对所述目标终端的上行定位测量量信息进行修正，确定关于目标终端的修正后的上行定位测量量信息；
根据所述目标终端的修正后的上行定位测量量信息，确定所述目标终端的位置信息。
可选地，所述修正后的下行定位测量量信息，包括：下行RSTD测量值。
可选地，获取参考终端的位置信息和下行定位测量量信息之前，该方法还包括：
向终端发送下行定位参考信号配置信息；或者向基站发送下行定位参考信号配置信息，由基站转发下行定位参考信号配置信息给终端。
可选地，所述参考终端的位置信息是参考终端上报的；
所述下行定位测量量信息为参考终端上报的下行定位测量量信息。
可选地，根据所述时钟偏差对所述目标终端的下行定位测量量信息进行修正，确定关于目标终端的修正后的下行定位测量量信息，具体包括：
把所述时钟偏差通知给基站，使得基站校准基站之间的时钟偏差后，向所述目标终端发送下行定位参考信号；将所述目标终端上报的下行RSTD测量值或者基于所述目标终端上报的来自多个基站的下行TOA值之差，直接赋值给修正后的RSTD值；
或者，在位置解算过程中，将目标终端上报的RSTD值与所述时钟偏差 的差值，作为所述修正后的下行定位测量量信息。
可选地，所述修正后的上行定位测量量信息，包括上行相对到达时间RTOA测量值。
可选地，获取参考终端的位置信息和上行定位测量量信息之前，该方法还包括：
向终端发送上行定位参考信号配置信息；或者向基站发送上行定位参考信号配置信息，由所述基站转发所述上行定位参考信号配置信息给所述终端。
可选地，所述根据所述时钟偏差对所述目标终端的上行定位测量量信息进行修正，确定关于目标终端的修正后的上行定位测量量信息，具体包括：
把所述时钟偏差通知给基站，使得基站校准基站之间的时钟偏差后，接收来自所述目标终端的上行探测参考信号；将基站上报的上行RTOA值，直接赋值给修正后的RTOA值；
或者，在位置解算过程中，将基站关于所述目标终端上报的上行RTOA值与所述时钟偏差的差值，作为所述修正后的上行定位测量量信息。
参见图6，在目标终端侧，本申请实施例提供的一种定位方法，包括：
S601、确定定位参考信号配置信息；
其中，所述定位参考信号配置信息，包括上行和/或下行的定位参考信号配置信息。
例如，目标UE接收LMF实体或者基站提供的下行PRS配置信息或者上行PRS配置信息。
S602、针对下行链路到达时间差DL-TDOA定位技术方案，基于定位参考信号配置信息接收并测量来自不同基站的下行定位参考信号，确定下行定位测量量信息，并上报所述下行定位测量量信息；和/或
S603、针对上行链路到达时间差UL-TDOA定位技术方案，基于定位参考信号配置信息发送上行定位参考信号。
可选地，所述下行定位测量量信息，包括：下行定位测量量和/或者下行定位测量量的可靠性指示，其中，所述可靠性指示是下行定位测量量的误差 估计值的标准差和/或方差，用于指示下行定位测量量的可靠性。
可选地，所述定位参考信号配置信息，是LMF实体或基站提供的。
参见图7，在基站侧，本申请实施例提供的一种定位方法，包括：
S701、向终端发送定位参考信号配置信息；
其中，所述定位参考信号配置信息，包括上行和/或下行的定位参考信号配置信息。
例如，基站接收LMF实体发送的下行PRS配置信息或者上行PRS配置信息，然后向UE转发该配置信息。
S702、针对下行链路到达时间差DL-TDOA定位技术方案，向参考终端发送下行定位参考信号，接收参考终端上报的下行定位测量量信息和参考终端的位置信息，并转发给LMF实体；
S703、针对上行链路到达时间差UL-TDOA定位技术方案，接收并测量参考终端发送的上行定位参考信号以获得上行定位测量量信息，向LMF实体上报所述上行定位测量量信息，并转发参考终端上报的参考终端的位置信息。
可选地，该方法还包括：
当收到LMF实体通知的基站之间的时钟偏差时，根据所述时钟偏差校准本地基站的时钟偏差；
针对下行链路到达时间差DL-TDOA定位技术方案，向目标终端发送下行定位参考信号，接收目标终端上报的下行定位测量量信息，并转发给LMF实体；
针对上行链路到达时间差UL-TDOA定位技术方案，接收并测量目标终端发送的上行定位参考信号以获得目标终端的上行定位测量量信息，向LMF实体上报所述目标终端的上行定位测量量信息。
在参考终端侧，参见图8，本申请实施例提供的一种定位装置(可以是任意类型的终端)，包括：
存储器820，用于存储程序指令；
处理器800，用于调用所述存储器中存储的程序指令，按照获得的程序执 行：
确定定位参考信号配置信息；
针对下行链路到达时间差DL-TDOA定位技术方案，基于定位参考信号配置信息接收并测量来自不同基站的下行定位参考信号，确定下行定位测量量信息，并上报所述下行定位测量量信息和参考终端的位置信息，使得LMF实体基于所述下行定位测量量信息和所述参考终端的位置信息对目标终端进行定位；和/或
针对上行链路到达时间差UL-TDOA定位技术方案，基于定位参考信号配置信息发送上行定位参考信号，并发送参考终端的位置信息，使得LMF实体基于所述上行定位参考信号和所述参考终端的位置信息对目标终端进行定位。
可选地，所述下行定位测量量信息，包括：下行定位测量量和/或者下行定位测量量的可靠性指示，其中，所述可靠性指示是下行定位测量量的误差估计值的标准差和/或方差，用于指示下行定位测量量的可靠性。
可选地，所述参考终端的位置信息，是参考终端基于预先配置的位置信息或者通过独立无线接入技术RAT-independent定位方案确定的。
可选地，所述定位参考信号配置信息，是LMF实体或基站提供的。
收发机810，用于在处理器800的控制下接收和发送数据。
其中，在图8中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器800代表的一个或多个处理器和存储器820代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机810可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口830还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器800负责管理总线架构和通常的处理，存储器820可以存储处理 器800在执行操作时所使用的数据。
可选的，处理器800可以是中央处埋器(Central Processing Unit,CPU)、专用集成电路(Application Specific Integrated Circuit，)ASIC、现场可编程门阵列(Field－Programmable Gate Array，FPGA)或复杂可编程逻辑器件(Complex Programmable Logic Device，CPLD)。
参见图9，在网络侧，本申请实施例提供的一种定位装置(可以是LMF实体)，包括：
存储器920，用于存储程序指令；
处理器900，用于调用所述存储器中存储的程序指令，按照获得的程序执行：
针对下行链路到达时间差DL-TDOA定位技术方案，接收参考终端上报的下行定位测量量信息和参考终端的位置信息，并接收目标终端上报的下行定位测量量信息；基于所述参考终端上报的下行定位测量量信息和参考终端的位置信息，以及目标终端上报的下行定位测量量信息，对目标终端进行定位；和/或
针对上行链路到达时间差UL-TDOA定位技术方案，接收参考终端上报的参考终端的位置信息，并接收基站上报的参考终端的上行定位测量量信息，以及基站上报的目标终端的上行定位测量量信息；基于所述参考终端的上行定位测量量信息和所述参考终端的位置信息，以及目标终端的上行定位测量量信息，对目标终端进行定位。
可选地，所述处理器900具体用于：
根据获取的参考终端的位置信息和下行定位测量量信息，确定各个基站之间的时钟偏差；
根据所述时钟偏差对所述目标终端的下行定位测量量信息进行修正，确定关于目标终端的修正后的下行定位测量量信息；
根据所述目标终端的修正后的下行定位测量量信息，确定所述目标终端的位置信息。
可选地，所述修正后的下行定位测量量信息，包括：下行参考信号时间差RSTD测量值。
可选地，获取参考终端的位置信息和下行定位测量量信息之前，所述处理器900还用于调用所述存储器中存储的程序指令，按照获得的程序执行：
向终端发送下行定位参考信号配置信息；或者向基站发送下行定位参考信号配置信息，由基站转发下行定位参考信号配置信息给终端。
可选地，根据所述时钟偏差，所述处理器900具体用于：
把所述时钟偏差通过收发机910通知给基站，使得基站校准基站之间的时钟偏差后，向目标终端发送下行定位参考信号或者接收来自目标终端的探测参考信号；将目标终端上报的RSTD或者基于目标终端上报的来自多个基站的下行TOA之差，直接赋值给修正后的RSTD；
或者，在位置解算过程中，将目标终端上报的RSTD值与所述时钟偏差的差值，作为所述修正后的下行定位测量量信息。
可选地，所述修正后的上行定位测量量信息，包括上行相对到达时间RTOA测量值。
可选地，获取参考终端的位置信息和上行定位测量量信息之前，所述处理器900还用于调用所述存储器920中存储的程序指令，按照获得的程序执行：
向终端发送上行定位参考信号配置信息；或者向基站发送上行定位参考信号配置信息，由所述基站转发所述上行定位参考信号配置信息给所述终端。
可选地，所述根据所述时钟偏差对所述目标终端的上行定位测量量信息进行修正，确定关于目标终端的修正后的上行定位测量量信息，所述处理器900具体用于调用所述存储器920中存储的程序指令，按照获得的程序执行：
把所述时钟偏差通知给基站，使得基站校准基站之间的时钟偏差后，接收来自所述目标终端的上行探测参考信号；将基站上报的上行RTOA，直接赋值给修正后的RTOA；
或者，在位置解算过程中，将基站关于所述目标终端上报的上行RTOA 值与所述时钟偏差的差值，作为所述修正后的上行定位测量量信息。
收发机910，用于在处理器900的控制下接收和发送数据。
其中，在图9中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器900代表的一个或多个处理器和存储器920代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机910可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。处理器900负责管理总线架构和通常的处理，存储器920可以存储处理器900在执行操作时所使用的数据。
处理器900可以是CPU、ASIC、FPGA或CPLD。
在目标终端侧，本申请实施例提供的一种定位装置(可以是任意类型的终端)，其结构也可以参考图8，包括：
存储器，用于存储程序指令；
处理器，用于调用所述存储器中存储的程序指令，按照获得的程序执行：
确定定位参考信号配置信息；
针对下行链路到达时间差DL-TDOA定位技术方案，基于定位参考信号配置信息接收并测量来自不同基站的下行定位参考信号，确定下行定位测量量信息，并上报所述下行定位测量量信息；
针对UL-TDOA定位技术方案，基于定位参考信号配置信息发送上行定位参考信号。
可选地，所述下行定位测量量信息，包括：下行定位测量量和/或者下行定位测量量的可靠性指示，其中，所述可靠性指示是下行定位测量量的误差估计值的标准差和/或方差，用于指示下行定位测量量的可靠性。
可选地，所述定位参考信号配置信息，是LMF实体或基站提供的。
可选地，所述处理器，还用于调用所述存储器中存储的程序指令，按照获得的程序执行：
确定并上报参考终端的位置信息。
也就是说，本申请实施例所述的终端即可以作为参考终端，也可以作为目标终端，可以同时具有参考终端和目标终端的功能。
在网络侧，本申请实施例提供的另一种定位装置(可以是基站)，其结构也可以参考图9，包括：
存储器，用于存储程序指令；
处理器，用于调用所述存储器中存储的程序指令，按照获得的程序执行：
向终端发送定位参考信号配置信息；
针对下行链路到达时间差DL-TDOA定位技术方案，向参考终端发送下行定位参考信号，接收参考终端上报的下行定位测量量信息和参考终端的位置信息，并转发给LMF实体；
针对UL-TDOA定位技术方案，接收并测量参考终端发送的上行定位参考信号以获得上行定位测量量信息，向LMF实体上报所述上行定位测量量信息，并转发参考终端上报的参考终端的位置信息。
可选地，所述处理器还用于调用所述存储器中存储的程序指令，按照获得的程序执行：
当收到LMF实体通知的基站之间的时钟偏差时，根据所述时钟偏差校准本地基站的时钟偏差；
针对DL-TDOA定位技术方案，向目标终端发送下行定位参考信号，接收目标终端上报的下行定位测量量信息，并转发给LMF实体；
针对UL-TDOA定位技术方案，接收并测量目标终端发送的上行定位参考信号以获得目标终端的上行定位测量量信息，向LMF实体上报所述目标终端的上行定位测量量信息。
在参考终端侧，参见图10，本申请实施例提供的另一种定位装置，包括：
配置信息确定单元11，用于确定定位参考信号配置信息；
第一下行单元12，用于针对DL-TDOA定位技术方案，基于定位参考信号配置信息接收并测量来自不同基站的下行定位参考信号，确定下行定位测 量量信息，并上报所述下行定位测量量信息和参考终端的位置信息，使得LMF实体基于所述下行定位测量量信息和所述参考终端的位置信息对目标终端进行定位；和/或
第一上行单元13，用于针对UL-TDOA定位技术方案，基于定位参考信号配置信息发送上行定位参考信号，并发送参考终端的位置信息，使得LMF实体基于所述上行定位参考信号和所述参考终端的位置信息对目标终端进行定位。
可选地，所述下行定位测量量信息，包括：下行定位测量量和/或者下行定位测量量的可靠性指示，其中，所述可靠性指示是下行定位测量量的误差估计值的标准差和/或方差，用于指示下行定位测量量的可靠性。
可选地，所述参考终端的位置信息，是参考终端基于预先配置的位置信息或者通过独立无线接入技术RAT-independent定位方案确定的。
可选地，所述定位参考信号配置信息，是LMF实体或基站提供的。
在LMF实体侧，参见图11，本申请实施例提供的另一种定位装置，包括：
第一下行处理单元21，用于针对下行链路到达时间差DL-TDOA定位技术方案，接收参考终端上报的下行定位测量量信息和参考终端的位置信息，并接收目标终端上报的下行定位测量量信息；基于所述参考终端上报的下行定位测量量信息和参考终端的位置信息，以及目标终端上报的下行定位测量量信息，对目标终端进行定位；和/或
第一上行处理单元22，用于针对上行链路到达时间差UL-TDOA定位技术方案，接收参考终端上报的参考终端的位置信息，并接收基站上报的参考终端的上行定位测量量信息，以及基站上报的目标终端的上行定位测量量信息；基于所述参考终端的上行定位测量量信息和所述参考终端的位置信息，以及目标终端的上行定位测量量信息，对目标终端进行定位。
可选地，所述第一下行处理单元21具体用于：
根据获取的参考终端的位置信息和下行定位测量量信息，确定各个基站之间的时钟偏差；
根据所述时钟偏差对所述目标终端的下行定位测量量信息进行修正，确定关于目标终端的修正后的下行定位测量量信息；
根据所述目标终端的修正后的下行定位测量量信息，确定目标终端的位置信息。
可选地，所述第一上行处理单元22具体用于：
根据获取的参考终端的位置信息和上行定位测量量信息，确定各个基站之间的时钟偏差；
根据所述时钟偏差对所述目标终端的上行定位测量量信息进行修正，确定关于目标终端的修正后的上行定位测量量信息；
根据所述目标终端的修正后的上行定位测量量信息，确定所述目标终端的位置信息。
可选地，所述修正后的下行定位测量量，包括：下行参考信号时间差RSTD测量值。
可选地，还包括第一发送单元，获取参考终端的位置信息和下行定位测量量信息之前，所述第一发送单元用于：
向终端发送下行定位参考信号配置信息；或者向基站发送下行定位参考信号配置信息，由所述基站转发所述下行定位参考信号配置信息给所述终端。
可选地，所述第一下行处理单元21具体用于：
把所述时钟偏差通知给基站，使得基站校准基站之间的时钟偏差后，向所述目标终端发送下行定位参考信号；将所述目标终端上报的下行RSTD测量值或者基于所述目标终端上报的来自多个基站的下行TOA值之差，直接赋值给修正后的RSTD值；
或者，在位置解算过程中，将目标终端上报的RSTD值与所述时钟偏差的差值，作为所述修正后的下行定位测量量信息。
可选地，所述修正后的上行定位测量量信息，包括上行相对到达时间RTOA测量值。
可选地，还包括第二发送单元，获取参考终端的位置信息和上行定位测 量量信息之前，所述第二发送单元用于：
向终端发送上行定位参考信号配置信息；或者向基站发送上行定位参考信号配置信息，由所述基站转发所述上行定位参考信号配置信息给所述终端。
可选地，所述第一上行处理单元22具体用于：
把所述时钟偏差通知给基站，使得基站校准基站之间的时钟偏差后，接收来自所述目标终端的上行探测参考信号；将基站上报的上行RTOA，直接赋值给修正后的RTOA；
或者，在位置解算过程中，将基站关于所述目标终端上报的上行RTOA值与所述时钟偏差的差值，作为所述修正后的上行定位测量量信息。
在目标终端侧，参见图12，本申请实施例提供的另一种定位装置，包括：
配置信息确定单元31，用于确定定位参考信号配置信息；
第二下行单元32，用于针对DL-TDOA定位技术方案，基于定位参考信号配置信息接收并测量来自不同基站的下行定位参考信号，确定下行定位测量量信息，并上报所述下行定位测量量信息；和/或
第二上行单元33，用于针对UL-TDOA定位技术方案，基于定位参考信号配置信息发送上行定位参考信号。
可选地，所述下行定位测量量信息，包括：下行定位测量量和/或者下行定位测量量的可靠性指示，其中，所述可靠性指示是下行定位测量量的误差估计值的标准差和/或方差，用于指示下行定位测量量的可靠性。
可选地，所述定位参考信号配置信息，是LMF实体或基站提供的。
在基站侧，参见图13，本申请实施例提供的另一种定位装置，包括：
配置信息发送单元41，用于向终端发送定位参考信号配置信息；
第二下行处理单元42，用于针对DL-TDOA定位技术方案，向参考终端发送下行定位参考信号，接收参考终端上报的下行定位测量量信息和参考终端的位置信息，并转发给LMF实体；
第二上行处理单元43，用于针对UL-TDOA定位技术方案，接收并测量参考终端发送的上行定位参考信号以获得上行定位测量量信息，向LMF实体 上报所述上行定位测量量信息，并转发参考终端上报的参考终端的位置信息。
可选地，该装置还包括：时钟偏差校准单元，用于当收到LMF实体通知的基站之间的时钟偏差时，根据所述时钟偏差校准本地基站的时钟偏差；
第二下行处理单元42还用于：针对DL-TDOA定位技术方案，向目标终端发送下行定位参考信号，接收目标终端上报的下行定位测量量信息，并转发给LMF实体；
第二上行处理单元43还用于：针对UL-TDOA定位技术方案，接收并测量目标终端发送的上行定位参考信号以获得目标终端的上行定位测量量信息，向LMF实体上报所述目标终端的上行定位测量量信息。
需要说明的是，本申请实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
本申请实施例提供了一种计算设备，该计算设备具体可以为桌面计算机、便携式计算机、智能手机、平板电脑、个人数字助理(Personal Digital Assistant，PDA)等。该计算设备可以包括中央处理器(Center Processing Unit，CPU)、存储器、输入/输出设备等，输入设备可以包括键盘、鼠标、触摸屏等，输出 设备可以包括显示设备，如液晶显示器(Liquid Crystal Display，LCD)、阴极射线管(Cathode Ray Tube，CRT)等。
存储器可以包括只读存储器(ROM)和随机存取存储器(RAM)，并向处理器提供存储器中存储的程序指令和数据。在本申请实施例中，存储器可以用于存储本申请实施例提供的任一所述方法的程序。
处理器通过调用存储器存储的程序指令，处理器用于按照获得的程序指令执行本申请实施例提供的任一所述方法。
本申请实施例提供了一种计算机存储介质，用于储存为上述本申请实施例提供的装置所用的计算机程序指令，其包含用于执行上述本申请实施例提供的任一方法的程序。
所述计算机存储介质可以是计算机能够存取的任何可用介质或数据存储设备，包括但不限于磁性存储器(例如软盘、硬盘、磁带、磁光盘(MO)等)、光学存储器(例如CD、DVD、BD、HVD等)、以及半导体存储器(例如ROM、EPROM、EEPROM、非易失性存储器(NAND FLASH)、固态硬盘(SSD))等。
本申请实施例提供的方法可以应用于终端设备，也可以应用于网络设备。
其中，终端设备也可称之为用户设备(User Equipment，简称为“UE”)、移动台(Mobile Station，简称为“MS”)、移动终端(Mobile Terminal)等，可选的，该终端可以具备经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信的能力，例如，终端可以是移动电话(或称为“蜂窝”电话)、或具有移动性质的计算机等，例如，终端还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置。
网络设备可以为基站(例如，接入点)，指接入网中在空中接口上通过一个或多个扇区与无线终端通信的设备。基站可用于将收到的空中帧与IP分组进行相互转换，作为无线终端与接入网的其余部分之间的路由器，其中接入网的其余部分可包括网际协议(IP)网络。基站还可协调对空中接口的属性管理。例如，基站可以是GSM或CDMA中的基站(BTS，Base Transceiver Station)， 也可以是WCDMA中的基站(NodeB)，还可以是LTE中的演进型基站(NodeB或eNB或e-NodeB，evolutional Node B)，或者也可以是5G系统中的gNB等。本申请实施例中不做限定。
上述方法处理流程可以用软件程序实现，该软件程序可以存储在存储介质中，当存储的软件程序被调用时，执行上述方法步骤。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本 申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (55)

  1. 一种定位方法，其特征在于，该方法包括：
    确定定位参考信号配置信息；
    针对下行链路到达时间差DL-TDOA定位技术方案，基于定位参考信号配置信息接收并测量来自不同基站的下行定位参考信号，确定下行定位测量量信息，并上报所述下行定位测量量信息和参考终端的位置信息，使得位置管理功能LMF实体基于所述下行定位测量量信息和所述参考终端的位置信息对目标终端进行定位；和/或
    针对上行链路到达时间差UL-TDOA定位技术方案，基于定位参考信号配置信息发送上行定位参考信号，并发送参考终端的位置信息，使得LMF实体基于所述上行定位参考信号和所述参考终端的位置信息对目标终端进行定位。
  2. 根据权利要求1所述的方法，其特征在于，所述下行定位测量量信息，包括：下行定位测量量和/或者下行定位测量量的可靠性指示，其中，所述可靠性指示是下行定位测量量的误差估计值的标准差和/或方差，用于指示下行定位测量量的可靠性。
  3. 根据权利要求1所述的方法，其特征在于，所述参考终端的位置信息，是参考终端基于预先配置的位置信息或者通过独立无线接入技术RAT-independent定位方案确定的。
  4. 根据权利要求1所述的方法，其特征在于，所述定位参考信号配置信息，是位置管理功能LMF实体或基站提供的。
  5. 一种定位方法，其特征在于，该方法包括：
    针对下行链路到达时间差DL-TDOA定位技术方案，接收参考终端上报的下行定位测量量信息和参考终端的位置信息，并接收目标终端上报的下行定位测量量信息；基于所述参考终端上报的下行定位测量量信息和参考终端的位置信息，以及目标终端上报的下行定位测量量信息，对目标终端进行定 位；和/或
    针对上行链路到达时间差UL-TDOA定位技术方案，接收参考终端上报的参考终端的位置信息，并接收基站上报的参考终端的上行定位测量量信息，以及基站上报的目标终端的上行定位测量量信息；基于所述参考终端的上行定位测量量信息和所述参考终端的位置信息，以及目标终端的上行定位测量量信息，对目标终端进行定位。
  6. 根据权利要求5所述的方法，其特征在于，所述基于所述参考终端上报的下行定位测量量信息和参考终端的位置信息，以及目标终端上报的下行定位测量量信息，对目标终端进行定位，包括：
    根据获取的参考终端的位置信息和下行定位测量量信息，确定各个基站之间的时钟偏差；
    根据所述时钟偏差对所述目标终端的下行定位测量量信息进行修正，确定关于目标终端的修正后的下行定位测量量信息；
    根据所述目标终端的修正后的下行定位测量量信息，确定所述目标终端的位置信息。
  7. 根据权利要求5所述的方法，其特征在于，所述基于所述基站上报的关于参考终端的上行定位测量量信息和所述参考终端的位置信息，以及基站上报的关于目标终端的上行定位测量量信息，对目标终端进行定位，包括：
    根据获取的参考终端的位置信息和上行定位测量量信息，确定各个基站之间的时钟偏差；
    根据所述时钟偏差对所述目标终端的上行定位测量量信息进行修正，确定关于目标终端的修正后的上行定位测量量信息；
    根据所述目标终端的修正后的上行定位测量量信息，确定所述目标终端的位置信息。
  8. 根据权利要求6所述的方法，其特征在于，所述修正后的下行定位测量量信息，包括：下行参考信号时间差RSTD测量值。
  9. 根据权利要求6所述的方法，其特征在于，获取参考终端的位置信息 和下行定位测量量信息之前，该方法还包括：
    向终端发送下行定位参考信号配置信息；或者向基站发送下行定位参考信号配置信息，由所述基站转发所述下行定位参考信号配置信息给所述终端。
  10. 根据权利要求6所述的方法，其特征在于，根据所述时钟偏差对所述目标终端的下行定位测量量信息进行修正，确定关于目标终端的修正后的下行定位测量量信息，具体包括：
    把所述时钟偏差通知给基站，使得基站校准基站之间的时钟偏差后，向所述目标终端发送下行定位参考信号；将所述目标终端上报的RSTD或者基于所述目标终端上报的来自多个基站的下行TOA之差，直接赋值给修正后的RSTD；
    或者，在位置解算过程中，将目标终端上报的RSTD值与所述时钟偏差的差值，作为所述修正后的下行定位测量量信息。
  11. 根据权利要求7所述的方法，其特征在于，所述修正后的上行定位测量量信息，包括上行相对到达时间RTOA测量值。
  12. 根据权利要求7所述的方法，其特征在于，获取参考终端的位置信息和上行定位测量量信息之前，该方法还包括：
    向终端发送上行定位参考信号配置信息；或者向基站发送上行定位参考信号配置信息，由所述基站转发所述上行定位参考信号配置信息给所述终端。
  13. 根据权利要求7所述的方法，其特征在于，所述根据所述时钟偏差对所述目标终端的上行定位测量量信息进行修正，确定关于目标终端的修正后的上行定位测量量信息，具体包括：
    把所述时钟偏差通知给基站，使得基站校准基站之间的时钟偏差后，接收来自所述目标终端的上行探测参考信号；将基站上报的上行RTOA，直接赋值给修正后的RTOA；
    或者，在位置解算过程中，将基站关于所述目标终端上报的上行RTOA值与所述时钟偏差的差值，作为所述修正后的上行定位测量量信息。
  14. 一种定位方法，其特征在于，该方法包括：
    确定定位参考信号配置信息；
    针对下行链路到达时间差DL-TDOA定位技术方案，基于所述定位参考信号配置信息接收并测量来自不同基站的下行定位参考信号，确定下行定位测量量信息，并上报所述下行定位测量量信息；和/或
    针对上行链路到达时间差UL-TDOA定位技术方案，基于定位参考信号配置信息发送上行定位参考信号。
  15. 根据权利要求14所述的方法，其特征在于，所述下行定位测量量信息，包括：下行定位测量量和/或者下行定位测量量的可靠性指示，其中，所述可靠性指示是下行定位测量量的误差估计值的标准差和/或方差，用于指示下行定位测量量的可靠性。
  16. 根据权利要求14所述的方法，其特征在于，所述定位参考信号配置信息，是位置管理功能LMF实体或基站提供的。
  17. 一种定位方法，其特征在于，该方法包括：
    向终端发送定位参考信号配置信息；
    针对下行链路到达时间差DL-TDOA定位技术方案，向参考终端发送下行定位参考信号，接收所述参考终端上报的下行定位测量量信息和所述参考终端的位置信息，并转发给位置管理功能LMF实体；和/或
    针对上行链路到达时间差UL-TDOA定位技术方案，接收并测量所述参考终端发送的上行定位参考信号以获得上行定位测量量信息，向LMF实体上报所述上行定位测量量信息，并转发所述参考终端上报的参考终端位置。
  18. 根据权利要求17所述的方法，其特征在于，该方法还包括：
    当收到所述LMF实体通知的基站之间的时钟偏差时，根据所述时钟偏差校准本地基站的时钟偏差；
    针对下行链路到达时间差DL-TDOA定位技术方案，向目标终端发送下行定位参考信号，接收所述目标终端上报的下行定位测量量信息，并转发给位置管理功能LMF实体；
    针对上行链路到达时间差UL-TDOA定位技术方案，接收并测量目标终 端发送的上行定位参考信号以获得所述目标终端的上行定位测量量信息，向所述LMF实体上报所述目标终端的上行定位测量量信息。
  19. 一种定位装置，其特征在于，包括：
    存储器，用于存储程序指令；
    处理器，用于调用所述存储器中存储的程序指令，按照获得的程序执行：
    确定定位参考信号配置信息；
    针对下行链路到达时间差DL-TDOA定位技术方案，基于定位参考信号配置信息接收并测量来自不同基站的下行定位参考信号，确定下行定位测量量信息，并上报所述下行定位测量量信息和参考终端的位置信息，使得位置管理功能LMF实体基于所述下行定位测量量信息和所述参考终端的位置信息对目标终端进行定位；和/或
    针对上行链路到达时间差UL-TDOA定位技术方案，基于定位参考信号配置信息发送上行定位参考信号，并发送参考终端的位置信息，使得LMF实体基于所述下行定位测量量信息和所述参考终端的位置信息对目标终端进行定位。
  20. 根据权利要求19所述的装置，其特征在于，所述下行定位测量量信息，包括：下行定位测量量和/或者下行定位测量量的可靠性指示，其中，所述可靠性指示是下行定位测量量的误差估计值的标准差和/或方差，用于指示下行定位测量量的可靠性。
  21. 根据权利要求19所述的装置，其特征在于，所述参考终端的位置信息，是参考终端基于预先配置的位置信息或者通过独立无线接入技术RAT-independent定位方案确定的。
  22. 根据权利要求19所述的装置，其特征在于，所述定位参考信号配置信息，是位置管理功能LMF实体或基站提供的。
  23. 一种定位装置，其特征在于，包括：
    存储器，用于存储程序指令；
    处理器，用于调用所述存储器中存储的程序指令，按照获得的程序执行：
    针对下行链路到达时间差DL-TDOA定位技术方案，接收参考终端上报的下行定位测量量信息和参考终端的位置信息，并接收目标终端上报的下行定位测量量信息；基于所述参考终端上报的下行定位测量量信息和参考终端的位置信息，以及目标终端上报的下行定位测量量信息，对目标终端进行定位；和/或
    针对上行链路到达时间差UL-TDOA定位技术方案，接收参考终端上报的参考终端的位置信息，并接收基站上报的参考终端的上行定位测量量信息，以及基站上报的目标终端的上行定位测量量信息；基于所述参考终端的上行定位测量量信息和所述参考终端的位置信息，以及目标终端的上行定位测量量信息，对目标终端进行定位。
  24. 根据权利要求23所述的装置，其特征在于，所述基于所述参考终端上报的下行定位测量量信息和参考终端的位置信息，以及目标终端上报的下行定位测量量信息，对目标终端进行定位，所述处理器具体用于调用所述存储器中存储的程序指令，按照获得的程序执行：
    根据获取的参考终端的位置信息和下行定位测量量信息，确定各个基站之间的时钟偏差；
    根据所述时钟偏差对所述目标终端的下行定位测量量信息进行修正，确定关于目标终端的修正后的下行定位测量量信息；
    根据所述目标终端的修正后的下行定位测量量信息，确定所述目标终端的位置信息。
  25. 根据权利要求23所述的装置，其特征在于，所述根据所述时钟偏差对所述目标终端的上行定位测量量信息进行修正，确定关于目标终端的修正后的上行定位测量量信息，所述处理器具体用于调用所述存储器中存储的程序指令，按照获得的程序执行：
    根据获取的参考终端的位置信息和上行定位测量量信息，确定各个基站之间的时钟偏差；
    根据所述时钟偏差对所述目标终端的上行定位测量量信息进行修正，确 定关于目标终端的修正后的上行定位测量量信息；
    根据所述目标终端的修正后的上行定位测量量信息，确定所述目标终端的位置信息。
  26. 根据权利要求24所述的装置，其特征在于，所述修正后的下行定位测量量信息，包括：下行参考信号时间差RSTD测量值。
  27. 根据权利要求24所述的装置，其特征在于，获取参考终端的位置信息和下行定位测量量信息之前，所述处理器还用于调用所述存储器中存储的程序指令，按照获得的程序执行：
    向终端发送下行定位参考信号配置信息；或者向基站发送下行定位参考信号配置信息，由基站转发下行定位参考信号配置信息给终端。
  28. 根据权利要求24所述的装置，其特征在于，所述处理器具体用于：
    把所述时钟偏差通知给基站，使得所述基站校准基站之间的时钟偏差后，向目标终端发送下行定位参考信号；将所述目标终端上报的RSTD或者基于所述目标终端上报的来自多个基站的下行到达时间TOA之差，直接赋值给修正后的RSTD；
    或者，在位置解算过程中，将所述目标终端上报的RSTD值与所述时钟偏差的差值，作为所述修正后的下行定位测量量信息。
  29. 根据权利要求25所述的装置，其特征在于，所述修正后的上行定位测量量信息，包括上行相对到达时间RTOA测量值。
  30. 根据权利要求25所述的装置，其特征在于，获取参考终端的位置信息和上行定位测量量信息之前，所述处理器还用于调用所述存储器中存储的程序指令，按照获得的程序执行：
    向终端发送上行定位参考信号配置信息；或者向基站发送上行定位参考信号配置信息，由所述基站转发所述上行定位参考信号配置信息给所述终端。
  31. 根据权利要求25所述的装置，其特征在于，所述根据所述时钟偏差对所述目标终端的上行定位测量量信息进行修正，确定关于目标终端的修正后的上行定位测量量信息，所述处理器具体用于调用所述存储器中存储的程 序指令，按照获得的程序执行：
    把所述时钟偏差通知给基站，使得基站校准基站之间的时钟偏差后，接收来自所述目标终端的上行探测参考信号；将基站上报的上行RTOA，直接赋值给修正后的RTOA；
    或者，在位置解算过程中，将基站关于所述目标终端上报的上行RTOA值与所述时钟偏差的差值，作为所述修正后的上行定位测量量信息。
  32. 一种定位装置，其特征在于，包括：
    存储器，用于存储程序指令；
    处理器，用于调用所述存储器中存储的程序指令，按照获得的程序执行：
    确定定位参考信号配置信息；
    针对下行链路到达时间差DL-TDOA定位技术方案，基于定位参考信号配置信息接收并测量来自不同基站的下行定位参考信号，确定下行定位测量量信息，并上报所述下行定位测量量信息；和/或
    针对上行链路到达时间差UL-TDOA定位技术方案，基于定位参考信号配置信息发送上行定位参考信号。
  33. 根据权利要求32所述的装置，其特征在于，所述下行定位测量量信息，包括：下行定位测量量和/或者下行定位测量量的可靠性指示，其中，所述可靠性指示是下行定位测量量的误差估计值的标准差和/或方差，用于指示下行定位测量量的可靠性。
  34. 根据权利要求32所述的装置，其特征在于，所述定位参考信号配置信息，是位置管理功能LMF实体或基站提供的。
  35. 一种定位装置，其特征在于，包括：
    存储器，用于存储程序指令；
    处理器，用于调用所述存储器中存储的程序指令，按照获得的程序执行：
    向终端发送定位参考信号配置信息；
    针对下行链路到达时间差DL-TDOA定位技术方案，向参考终端发送下行定位参考信号，接收所述参考终端上报的下行定位测量量信息和参考终端 的位置信息，并转发给位置管理功能LMF实体；和/或
    针对上行链路到达时间差UL-TDOA定位技术方案，接收并测量参考终端发送的上行定位参考信号以获得上行定位测量量信息，向LMF实体上报所述上行定位测量量信息，并转发参考终端上报的参考终端的位置信息。
  36. 根据权利要求35所述的装置，其特征在于，所述处理器还用于调用所述存储器中存储的程序指令，按照获得的程序执行：
    当收到位置管理功能LMF实体通知的基站之间的时钟偏差时，根据所述时钟偏差校准本地基站的时钟偏差；
    针对下行链路到达时间差DL-TDOA定位技术方案，向目标终端发送下行定位参考信号，接收所述目标终端上报的下行定位测量量信息，并转发给LMF实体；
    针对上行链路到达时间差UL-TDOA定位技术方案，接收并测量所述目标终端发送的上行定位参考信号以获得目标终端的上行定位测量量信息，向LMF实体上报所述目标终端的上行定位测量量信息。
  37. 一种定位装置，其特征在于，包括：
    配置信息确定单元，用于确定定位参考信号配置信息；
    第一下行单元，用于针对下行链路到达时间差DL-TDOA定位技术方案，基于定位参考信号配置信息接收并测量来自不同基站的下行定位参考信号，确定下行定位测量量信息，并上报所述下行定位测量量信息和参考终端的位置信息，使得位置管理功能LMF实体基于所述下行定位测量量信息和所述参考终端的位置信息对目标终端进行定位；和/或
    第一上行单元，用于针对上行链路到达时间差UL-TDOA定位技术方案，基于定位参考信号配置信息发送上行定位参考信号，并发送参考终端的位置信息，使得LMF实体基于所述下行定位测量量信息和所述参考终端的位置信息对目标终端进行定位。
  38. 根据权利要求37所述的装置，其特征在于，所述下行定位测量量信息，包括：下行定位测量量和/或者下行定位测量量的可靠性指示，其中，所 述可靠性指示是下行定位测量量的误差估计值的标准差和/或方差，用于指示下行定位测量量的可靠性。
  39. 根据权利要求37所述的装置，其特征在于，所述参考终端的位置信息，是参考终端基于预先配置的位置信息或者通过独立无线接入技术RAT-independent定位方案确定的。
  40. 根据权利要求37所述的装置，其特征在于，所述定位参考信号配置信息，是位置管理功能LMF实体或基站提供的。
  41. 一种定位装置，其特征在于，包括：
    第一下行处理单元，用于针对下行链路到达时间差DL-TDOA定位技术方案，接收参考终端上报的下行定位测量量信息和参考终端的位置信息，并接收目标终端上报的下行定位测量量信息；基于所述参考终端上报的下行定位测量量信息和参考终端的位置信息，以及目标终端上报的下行定位测量量信息，对目标终端进行定位；和/或
    第一上行处理单元，用于针对上行链路到达时间差UL-TDOA定位技术方案，接收参考终端上报的参考终端的位置信息，并接收基站上报的参考终端的上行定位测量量信息，以及基站上报的目标终端的上行定位测量量信息；基于所述参考终端的上行定位测量量信息和所述参考终端的位置信息，以及目标终端的上行定位测量量信息，对目标终端进行定位。
  42. 根据权利要求41所述的装置，其特征在于，所述第一下行处理单元具体用于：
    根据获取的参考终端的位置信息和下行定位测量量信息，确定各个基站之间的时钟偏差；
    根据所述时钟偏差对所述目标终端的下行定位测量量信息进行修正，确定关于目标终端的修正后的下行定位测量量信息；
    根据所述目标终端的修正后的下行定位测量量信息，确定所述目标终端的位置信息。
  43. 根据权利要求41所述的装置，其特征在于，所述第一上行处理单元 具体用于：
    根据获取的参考终端的位置信息和上行定位测量量信息，确定各个基站之间的时钟偏差；
    根据所述时钟偏差对所述目标终端的上行定位测量量信息进行修正，确定关于目标终端的修正后的上行定位测量量信息；
    根据所述目标终端的修正后的上行定位测量量信息，确定所述目标终端的位置信息。
  44. 根据权利要求42所述的装置，其特征在于，所述修正后的下行定位测量量信息，包括：下行参考信号时间差RSTD测量值。
  45. 根据权利要求42所述的装置，其特征在于，还包括第一发送单元，获取参考终端的位置信息和下行定位测量量信息之前，所述第一发送单元用于：
    向终端发送下行定位参考信号配置信息；或者向基站发送下行定位参考信号配置信息，由所述基站转发所述下行定位参考信号配置信息给所述终端。
  46. 根据权利要求42所述的装置，其特征在于，所述第一下行处理单元具体用于：
    把所述时钟偏差通知给基站，使得基站校准基站之间的时钟偏差后，向所述目标终端发送下行定位参考信号；将所述目标终端上报的RSTD或者基于所述目标终端上报的来自多个基站的下行TOA之差，直接赋值给修正后的RSTD；
    或者，在位置解算过程中，将目标终端上报的RSTD值与所述时钟偏差的差值，作为所述修正后的下行定位测量量信息。
  47. 根据权利要求43所述的装置，其特征在于，所述修正后的上行定位测量量信息，包括上行相对到达时间RTOA测量值。
  48. 根据权利要求43所述的装置，其特征在于，还包括第二发送单元，获取参考终端的位置信息和上行定位测量量信息之前，所述第二发送单元用于：
    向终端发送上行定位参考信号配置信息；或者向基站发送上行定位参考信号配置信息，由所述基站转发所述上行定位参考信号配置信息给所述终端。
  49. 根据权利要求43所述的装置，其特征在于，所述第一上行处理单元具体用于：
    把所述时钟偏差通知给基站，使得基站校准基站之间的时钟偏差后，接收来自所述目标终端的上行探测参考信号；将基站上报的上行RTOA，直接赋值给修正后的RTOA；
    或者，在位置解算过程中，将基站关于所述目标终端上报的上行RTOA值与所述时钟偏差的差值，作为所述修正后的上行定位测量量信息。
  50. 一种定位装置，其特征在于，包括：
    配置信息确定单元，用于确定定位参考信号配置信息；
    第二下行单元，用于针对下行链路到达时间差DL-TDOA定位技术方案，基于定位参考信号配置信息接收并测量来自不同基站的下行定位参考信号，确定下行定位测量量信息，并上报所述下行定位测量量信息；和/或
    第二上行单元，用于针对上行链路到达时间差UL-TDOA定位技术方案，基于定位参考信号配置信息发送上行定位参考信号。
  51. 根据权利要求50所述的装置，其特征在于，所述下行定位测量量信息，包括：下行定位测量量和/或者下行定位测量量的可靠性指示，其中，所述可靠性指示是下行定位测量量的误差估计值的标准差和/或方差，用于指示下行定位测量量的可靠性。
  52. 根据权利要求50所述的装置，其特征在于，所述定位参考信号配置信息，是位置管理功能LMF实体或基站提供的。
  53. 一种定位装置，其特征在于，包括：
    配置信息发送单元，用于向终端发送定位参考信号配置信息；
    第二下行处理单元，用于针对下行链路到达时间差DL-TDOA定位技术方案，向参考终端发送下行定位参考信号，接收所述参考终端上报的下行定位测量量信息和参考终端的位置信息，并转发给位置管理功能LMF实体；
    第二上行处理单元，用于针对上行链路到达时间差UL-TDOA定位技术方案，接收并测量所述参考终端发送的上行定位参考信号以获得上行定位测量量信息，向LMF实体上报所述上行定位测量量信息，并转发所述参考终端上报的参考终端的位置信息。
  54. 根据权利要求53所述的装置，其特征在于，当收到所述LMF实体通知的基站之间的时钟偏差时，还包括校准单元：
    所述校准单元，用于根据所述时钟偏差校准本地基站的时钟偏差；
    所述第二下行处理单元，具体用于针对下行链路到达时间差DL-TDOA定位技术方案，向目标终端发送下行定位参考信号，接收所述目标终端上报的下行定位测量量信息，并转发给位置管理功能LMF实体；
    所述第二上行处理单元，具体用于针对上行链路到达时间差UL-TDOA定位技术方案，接收并测量目标终端发送的上行定位参考信号以获得所述目标终端的上行定位测量量信息，向所述LMF实体上报所述目标终端的上行定位测量量信息。
  55. 一种计算机存储介质，其特征在于，所述计算机存储介质存储有计算机可执行指令，所述计算机可执行指令用于使所述计算机执行权利要求1至18任一项所述的方法。
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