WO2023093453A1 - 终端位置的测量方法、终端、基站、电子设备和存储介质 - Google Patents

终端位置的测量方法、终端、基站、电子设备和存储介质 Download PDF

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WO2023093453A1
WO2023093453A1 PCT/CN2022/128125 CN2022128125W WO2023093453A1 WO 2023093453 A1 WO2023093453 A1 WO 2023093453A1 CN 2022128125 W CN2022128125 W CN 2022128125W WO 2023093453 A1 WO2023093453 A1 WO 2023093453A1
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terminal
base station
reference signal
measuring
time difference
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PCT/CN2022/128125
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English (en)
French (fr)
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李志安
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中兴通讯股份有限公司
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Publication of WO2023093453A1 publication Critical patent/WO2023093453A1/zh

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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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the technical field of mobile communication, and in particular to a method for measuring a terminal position, a terminal, a base station, electronic equipment and a storage medium.
  • MDT Minimum drive test
  • SON Network self-optimization
  • the MDT technology controls the terminal through the network, so that the terminal actively reports the terminal's location information, signal information, and measurement parameters collected from the terminal and the base station. These information are used to evaluate the coverage of the wireless network.
  • the purpose of the embodiments of the present application is to provide a method for measuring the location of a terminal, a terminal, a base station, an electronic device, and a storage medium, so as to enable the terminal to report more location-related information to the base station and improve the accuracy of terminal positioning.
  • the embodiment of the present application provides a method for measuring the position of a terminal applied to a terminal with the function of minimizing drive test MDT, including: selecting at least one of the received reference signals of the base station for measuring the time difference , use the selected reference signal to measure the time difference of the signal transmission of multiple neighboring cells arriving at the terminal; report the measured multiple time differences and the type of the selected reference signal to the base station for the base station to use the multiple time differences and the selected reference signal The type of estimated terminal position.
  • the embodiment of the present application provides a method for measuring the location of a terminal applied to a base station, including: sending multiple reference signals for the terminal to receive and selecting at least one of the multiple reference signals for measuring the time difference; receiving the arrival time difference of multiple neighboring cells sent by the terminal, and the type of the selected reference signal; estimating the position of the terminal according to the received multiple time differences and the type of the selected reference signal.
  • the embodiment of the present application also provides a terminal, including: a measurement module, which is used to select at least one of the received reference signals of the base station for measuring the time difference, and use the selected reference signal to measure the time difference between multiple neighboring cells arriving at the terminal Carrying out measurement; a reporting module, configured to report the measured multiple time differences and the type of the selected reference signal to the base station, so that the base station can estimate the position of the terminal according to the multiple time differences and the type of the selected reference signal.
  • a measurement module which is used to select at least one of the received reference signals of the base station for measuring the time difference, and use the selected reference signal to measure the time difference between multiple neighboring cells arriving at the terminal Carrying out measurement
  • a reporting module configured to report the measured multiple time differences and the type of the selected reference signal to the base station, so that the base station can estimate the position of the terminal according to the multiple time differences and the type of the selected reference signal.
  • the embodiment of the present application also provides a base station, including: a sending module, configured to send a plurality of reference signals for the terminal to receive and select at least one of the plurality of reference signals for measuring the time difference; a receiving module, configured to receive the terminal The transmitted arrival time difference of multiple adjacent cells to the terminal, and the type of the selected reference signal; the acquisition module is used to estimate the position of the terminal according to the received multiple time differences and the type of the selected reference signal.
  • a sending module configured to send a plurality of reference signals for the terminal to receive and select at least one of the plurality of reference signals for measuring the time difference
  • a receiving module configured to receive the terminal The transmitted arrival time difference of multiple adjacent cells to the terminal, and the type of the selected reference signal
  • the acquisition module is used to estimate the position of the terminal according to the received multiple time differences and the type of the selected reference signal.
  • the embodiment of the present application also provides an electronic device, including: at least one processor; and a memory connected to the at least one processor in communication; wherein, the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by at least one processor. Executed by one processor, so that at least one processor can execute the above-mentioned method for measuring the location of the terminal applied to the terminal, or execute the method for measuring the location of the terminal applied to the base station.
  • Embodiments of the present application also provide a computer-readable storage medium storing a computer program.
  • the computer program is executed by a processor, the above-mentioned method for measuring the location of the terminal applied to the terminal is implemented, or the method for measuring the location of the terminal applied to the base station is implemented. Measurement methods.
  • At least one of the received reference signals of the base station is selected for measuring the time difference, and the time difference between multiple neighboring cells arriving at the terminal is measured with the selected reference signal.
  • the signal selected for measurement is the reference signal provided by the base station. It is not limited to the positioning reference signal. It can be the reference signal originally required by the business, which can avoid the consumption of additional transmission channel resources and increase the proportion of location-related information reported to the base station. .
  • the terminal reports the multiple measured time differences and reference signal types to the base station, so that the base station can estimate the position of the terminal according to the time difference and the type of the reference signal, which can improve the positioning accuracy of the terminal to a certain extent.
  • FIG. 1 is a flow chart of a method for measuring a terminal position applied to a terminal according to an embodiment of the present application
  • FIG. 2 is a sequence diagram of a terminal reporting a time difference to a base station according to an embodiment of the present application
  • FIG. 3 is a flow chart of a method for measuring the position of a terminal applied to a base station according to an embodiment of the present application
  • FIG. 4 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a base station according to an embodiment of the present application.
  • Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
  • An embodiment of the present application relates to a method for measuring a location of a terminal, which is applied to a terminal having a function of minimizing a drive test (MDT).
  • the terminal selects at least one of the received reference signals from the base station to measure the time difference, and uses the selected reference signal to measure the time difference between multiple adjacent cells arriving at the terminal; the measured multiple time differences and the selected
  • the type of the reference signal is reported to the base station for the base station to estimate the position of the terminal according to the multiple time differences and the type of the selected reference signal.
  • a specific flow of the method for measuring a terminal location in this embodiment may be as shown in FIG. 1 .
  • Location information is the main information collected by MDT technology, which directly determines the use effect of MDT.
  • MDT location information
  • TA timing advance
  • AOA integrated uplink Angle-of-Arrival
  • the positioning result requires the terminal to be able to report the GPS location and turn on the GPS receiver.
  • This positioning method has high requirements on the hardware configuration of the terminal, so the proportion of information that the terminal can report is very small, generally no more than 5%, and it can only be reported outdoors.
  • the positioning method using WIFI, Bluetooth and other different system measurements not only the cooperation of the different system network is required, but also the base station needs to be configured to measure the location information.
  • the deployment of the different system network and the customized configuration on the base station side have high Difficulty, therefore, this positioning method is also difficult to use in a large area.
  • the loop delay between the terminal and the base station can be obtained according to the transmission and reception time difference of the terminal and the transmission and reception time difference measured by the base station, and then the distance between the terminal and the base station can be roughly estimated, and then the AOA measured by the base station can be used to determine The angle of the terminal position relative to the base station antenna.
  • the measurement of AOA needs to configure multi-antenna reception, and many base stations are only equipped with relatively few reception antennas, so AOA cannot be measured.
  • AOA as an angle the farther away from the base station, the worse the accuracy.
  • the location of the terminal cannot be accurately determined only based on the loop delay between the terminal and the base station, and the approximate orientation of the terminal can only be roughly determined based on the received signals from neighboring cells, and the positioning accuracy is relatively low.
  • the terminal measures the time difference between the arrival of the adjacent cell and the terminal according to the positioning reference signals (Positioning reference signals, referred to as "PRS") of the LTE system, and finally Realize determining the location of the terminal.
  • PRS Positioning reference signals
  • the measurement of the time difference is not affected by external occlusion, antenna type, and antenna orientation, but is only affected by signal reflection, and the positioning accuracy is relatively high.
  • this method needs to configure the PRS at the base station and send relevant parameters to the terminal through a special channel, so that the terminal can measure the time difference. This method is more limited in practical application and has few usage scenarios.
  • Step 101 Select at least one of the received reference signals from the base station for measuring the time difference, and use the selected reference signal to measure the time difference between multiple neighboring cells arriving at the terminal.
  • the reference signal sent by the base station may include one of the following or any combination thereof: a primary-secondary synchronization channel, a cell reference signal, and a positioning reference signal PRS.
  • the cell reference signal can also include cell-specific reference signals (Cell-specific reference signals, referred to as "CRS”) signals in the LTE system, and channel state information in the new radio access technology (New Radio, referred to as "NR") system Reference signal (Channel Status Information reference signals, referred to as "CSI-RS”) signal.
  • Cell-specific reference signals Cell-specific reference signals
  • NR New Radio
  • CSI-RS Channel Status Information reference signals
  • the terminal may select the reference signal with the highest precision among the reference signals sent by the base station for measuring the time difference.
  • the wider the bandwidth of the reference signal used to measure the time difference the higher the measurement accuracy.
  • the PRS is selected to measure the time difference, so that time difference data with high precision can be obtained. If the base station is not equipped with a PRS, a CRS with a relatively high number of subcarriers may be selected.
  • the terminal uses the observed time difference of arrival (Observed Time Difference of Arrival, "OTDOA” for short) method to measure the location.
  • OTDA observed Time Difference of Arrival
  • the terminal may know that the base station is configured with a PRS from channels such as a positioning server, and then select the PRS to measure the time difference.
  • the positioning server includes an evolved serving mobile location center (Evolved Serving Mobile Location Center, referred to as "E-SMLC”) in the LTE system or a location management function (Location Management Function, referred to as "LMF”) module in the NR system.
  • E-SMLC evolved serving mobile location center
  • LMF Location Management Function
  • reference signals such as primary and secondary synchronization channels and cell reference signals are less accurate than PRS time difference measurement, these reference signals themselves are required by the business.
  • the terminal uses these reference signals to measure the time difference without consuming additional resources, so it can More data is reported to the base station.
  • the purpose of the drive test is to optimize the wireless network. In some scenarios, the wireless network optimization only needs to obtain the general situation of the network coverage, and the accuracy requirement for the positioning of a single terminal is not particularly high, so the grid method is generally used for processing.
  • the size of the grid is generally 10*10 meters, 20*20 meters, 50*50 meters, 100*100 meters, etc.
  • the time difference between the neighboring cell and the terminal arrives at the terminal involved in this step is the time difference between the neighboring cell and the terminal's serving cell. That is, the time difference between the arrival of the adjacent cell and the terminal is measured based on the time from the serving cell to the terminal.
  • Step 102 Report the multiple measured time differences and the type of the selected reference signal to the base station, so that the base station can estimate the position of the terminal according to the time difference and the type of the selected reference signal.
  • the terminal reports the measured multiple time differences and the type of the selected reference signal to the base station.
  • the base station estimates the position of the terminal according to the received time difference and the type of the reference signal, so as to realize the positioning of the terminal.
  • the timing diagram of the terminal reporting the time difference to the base station is shown in FIG. 2 .
  • the way for the terminal to report information to the base station is different according to the state of the terminal, and can be divided into immediate reporting and delayed reporting.
  • the terminal reports the measured time difference and the type of the selected reference signal to the base station through a measurement report (Measurement Report, "MR" for short).
  • MR Measurement Report
  • the terminal writes the measured multiple time differences and the type of the selected reference signal into the local cache, and after the terminal accesses the network, it writes the measured multiple time differences and the selected reference signal type The type is reported to the base station through signaling.
  • the terminal when the terminal is in the talking state, the terminal has a radio resource control (Radio Resource Control, "RRC") link with the base station, and the terminal can report information such as time difference to the base station in the measurement report sent periodically.
  • RRC Radio Resource Control
  • the terminal When the terminal is in the non-communication state, that is, in the idle (IDLE) state, after the terminal subsequently establishes an RRC link with the base station to access the network, it uses signaling to report the measurement result to the base station.
  • RRC Radio Resource Control
  • the terminal may also generate an estimated value of time difference measurement accuracy according to the selected reference signal; report the estimated value of time difference measurement accuracy to the base station; Wherein, the time difference measurement precision estimation value is used for the base station to perform precision estimation on multiple received time differences. Reporting the estimated value of the time difference measurement accuracy to the base station can further improve the time difference measurement accuracy, and finally realize the improvement of terminal positioning accuracy.
  • the terminal can also report other measurement results to the base station, such as latitude and longitude obtained by GPS measurement.
  • the terminal selects at least one of the received reference signals from the base station to measure the time difference, and uses the selected reference signal to measure the time difference between multiple neighboring cells arriving at the terminal.
  • the signal selected for measurement is the reference signal provided by the base station. It is not limited to the positioning reference signal. It can be the reference signal originally required by the business, which can avoid the consumption of additional transmission channel resources and increase the proportion of location-related information reported to the base station. .
  • the terminal reports the multiple measured time differences and reference signal types to the base station, so that the base station can estimate the position of the terminal according to the time difference and the type of the reference signal, which can improve the positioning accuracy of the terminal to a certain extent.
  • An embodiment of the present application relates to a method for measuring a location of a terminal, which is applied to a base station.
  • the base station sends multiple reference signals for the terminal to receive and select at least one of the multiple reference signals for measuring the time difference;
  • the receiving terminal sends the arrival time difference of multiple adjacent cells to the terminal, and the selected reference signal Type; estimate the position of the terminal based on the received time difference and the selected reference signal type.
  • Step 301 sending multiple reference signals for the terminal to receive and select at least one of the multiple reference signals for measuring the time difference.
  • the multiple reference signals sent by the base station may include reference signals such as a positioning reference signal PRS, a cell reference signal, and a primary-secondary synchronization signal.
  • reference signals such as a positioning reference signal PRS, a cell reference signal, and a primary-secondary synchronization signal.
  • Step 302 receiving the time difference between multiple neighboring cells arriving at the terminal and the type of the selected reference signal sent by the terminal.
  • the time difference sent by the terminal received by the base station is obtained by the terminal through measurement according to the selected reference signal, and the type of the reference signal is a signal type used for measuring the time difference. It is not difficult to see that this step corresponds to the implementation details of the location measurement method applied to the terminal in the previous implementation. The relevant technical details mentioned in the previous implementation are still valid in this implementation. In order to reduce repetition, no Let me repeat.
  • Step 303 estimating the location of the terminal according to the multiple received time differences and the selected reference signal type.
  • the base station acquires the location information of the terminal according to the received multiple time differences and the type of the reference signal.
  • the base station can convert the time difference between the neighboring cell and the terminal into a distance difference, and then locate the terminal according to the distance difference and the location of the neighboring cell, combined with the type of reference signal.
  • the base station receives the transmission time difference of signals from multiple neighboring cells arriving at the terminal sent by the terminal, and the type of the reference signal used to measure the time difference. Furthermore, the position information of the terminal is acquired according to the multiple received time differences and the type of the reference signal, and the position information of the terminal obtained in combination with the type of the reference signal can make the acquired position information more accurate. Moreover, the measurement of the terminal location information in this embodiment does not depend on the hardware configuration of the terminal or the base station, which can make the acquisition of the terminal location more convenient.
  • An implementation manner of the present application relates to a terminal, as shown in FIG. 4 , including:
  • a measurement module 401 configured to select at least one of the received reference signals of the base station for measuring the time difference, and use the selected reference signal to measure the time difference between multiple neighboring cells arriving at the terminal;
  • the reporting module 402 is configured to report the measured multiple time differences and the type of the selected reference signal to the base station, so that the base station can obtain the location information of the terminal according to the multiple time differences and the type of the selected reference signal.
  • the measurement module 401 may also be configured to select the reference signal with the highest precision among the received reference signals of the base station for measuring the time difference.
  • the terminal may further include: an accuracy estimation module (not shown in the figure), configured to generate an estimated value of the time difference measurement accuracy according to the selected reference signal; report the estimated value of the time difference measurement accuracy to the base station; wherein, the time difference measurement The precision estimation value is used for the base station to perform precision estimation on the received multiple time differences.
  • an accuracy estimation module (not shown in the figure), configured to generate an estimated value of the time difference measurement accuracy according to the selected reference signal; report the estimated value of the time difference measurement accuracy to the base station; wherein, the time difference measurement The precision estimation value is used for the base station to perform precision estimation on the received multiple time differences.
  • the reporting module 402 can also be used to report the measured multiple time differences and the type of the selected reference signal to the base station through a measurement report when the terminal is connected to the network; In the case of , write the measured multiple time differences and the type of the selected reference signal into the local cache, and after the terminal accesses the network, report the measured multiple time differences and the type of the selected reference signal to the base station through signaling .
  • the terminal provided in this embodiment can select at least one of the received reference signals from the base station to measure the time difference, and use the selected reference signal to measure the time difference between multiple neighboring cells arriving at the terminal.
  • the signal selected for measurement is the reference signal provided by the base station. It is not limited to the positioning reference signal. It can be the reference signal originally required by the business, which can avoid the consumption of additional transmission channel resources and increase the proportion of location-related information reported to the base station. .
  • the terminal reports the multiple measured time differences and reference signal types to the base station, so that the base station can estimate the position of the terminal according to the time difference and the type of the reference signal, which can improve the positioning accuracy of the terminal to a certain extent.
  • An embodiment of the present application relates to a base station, as shown in FIG. 5 , including:
  • a sending module 501 configured to send multiple reference signals for the terminal to receive and select at least one of the multiple reference signals for measuring the time difference;
  • the receiving module 502 is configured to receive the time difference between multiple neighboring cells arriving at the terminal sent by the terminal, and the type of the selected reference signal;
  • the obtaining module 503 is configured to estimate the position of the terminal according to the multiple received time differences and the type of the selected reference signal.
  • the base station provided in this embodiment can receive the time difference of signal transmissions from multiple neighboring cells arriving at the terminal sent by the terminal, and the type of the reference signal used to measure the time difference. Furthermore, the position information of the terminal is acquired according to the multiple received time differences and the type of the reference signal, and the position information of the terminal obtained in combination with the type of the reference signal can make the acquired position information more accurate. Moreover, the measurement of the terminal location information in this embodiment does not depend on the hardware configuration of the terminal or the base station, which can make the acquisition of the terminal location more convenient.
  • modules involved in the above embodiments of the present application are logical modules.
  • a logical unit can be a physical unit, or a part of a physical unit, and can also Combination of physical units.
  • units that are not closely related to solving the technical problems proposed in the present application are not introduced in this embodiment, but this does not mean that there are no other units in this embodiment.
  • Embodiments of the present application also provide an electronic device, as shown in FIG. 6 , including at least one processor 601; and a memory 602 communicatively connected to at least one processor 601; wherein, the memory 602 stores information that can be processed by at least one
  • the instructions executed by the processor 601 are executed by at least one processor 601, so that the at least one processor 601 can execute the above-mentioned method for measuring the location of the terminal applied to the terminal, or execute the method for measuring the location of the terminal applied to the base station.
  • the memory 602 and the processor 601 are connected by a bus, and the bus may include any number of interconnected buses and bridges, and the bus connects one or more processors 601 and various circuits of the memory 602 together.
  • the bus may also connect together various other circuits such as peripherals, voltage regulators, and power management circuits, all of which are well known in the art and therefore will not be further described herein.
  • the bus interface provides an interface between the bus and the transceivers.
  • a transceiver may be a single element or multiple elements, such as multiple receivers and transmitters, providing means for communicating with various other devices over a transmission medium.
  • the data processed by the processor 601 is transmitted on the wireless medium through the antenna, and further, the antenna also receives the data and transmits the data to the processor 601 .
  • Processor 601 is responsible for managing the bus and general processing, and may also provide various functions including timing, peripheral interface, voltage regulation, power management, and other control functions. And the memory 602 may be used to store data used by the processor 601 when performing operations.
  • Embodiments of the present application also provide a computer-readable storage medium storing a computer program.
  • the computer program When the computer program is executed by the processor, it realizes the above-mentioned method for measuring the location of the terminal applied to the terminal, or realizes the method for measuring the location of the terminal applied to the base station.
  • a device which can be A single chip microcomputer, a chip, etc.
  • a processor processor
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc, etc., which can store program codes. .

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Abstract

本申请涉及移动通信技术领域，公开了一种终端位置的测量方法、终端、基站、电子设备和存储介质。本申请中，该终端位置的测量方法，包括：在接收到的基站的参考信号中选择至少一个用于测量时间差，用选择的参考信号对多个邻区到达终端时间差进行测量；将测量得到的多个时间差以及选择的参考信号的类型上报到基站，供基站根据多个时间差以及选择的参考信号的类型估计终端的位置信息。

Description

终端位置的测量方法、终端、基站、电子设备和存储介质
相关申请
本申请要求于2021年11月23号申请的、申请号为202111395424.9的中国专利申请的优先权。
技术领域
本申请涉及移动通信技术领域，尤其是涉及一种终端位置的测量方法、终端、基站、电子设备和存储介质。
背景技术
路测是对无线网络进行评估和优化的一项重要工作。为减少路测成本开销、缩短优化周期，第三代合作伙伴计划(3rd Generation Partnership Project，简称“3GPP”)在2009年底发布的长期演进(Long Term Evolution，简称“LTE”)系统的版本中引入了最小路测(Minimization of Drive Test，简称“MDT”)，作为网络自优化(Self Organizing Networks，简称“SON”)手段。MDT技术通过网络控制终端，使得终端主动上报终端的位置信息、信号信息以及从终端和基站采集的测量参数，这些信息用于对无线网络的覆盖情况进行评估。
然而，传统的MDT技术应用场景受限，对终端位置信息的获取依赖终端或基站的硬件配置，且难以保证获取的位置信息的精度。
发明内容
本申请实施方式的目的在于提供一种终端位置的测量方法、终端、基站、电子设备和存储介质，用以使终端向基站上报更多的位置相关信息，提升终端定位的精度。
为实现上述目的，本申请的实施方式提供了一种应用于具有最小化路测MDT功能的终端的终端位置的测量方法，包括：在接收到的基站的参考信号中选择至少一个用于测量时间差，用选择的参考信号对多个邻区到达终端的信号传输的时间差进行测量；将测量得到的多个时间差以及选择的参考信号的类型上报到基站，供基站根据多个时间差以及选择的参考信号的类型估计终端的位置。
为实现上述目的，本申请的实施方式提供了一种应用于基站的终端位置的测量方法，包括：发送多个参考信号，供终端接收并在多个参考信号中选择至少一个用于测量时间差；接收终端发送的多个邻区到达终端的时间差，以及选择的参考信号的类型；根据接收的多个时间差和选择的参考信号的类型估计终端的位置。
本申请的实施方式还提供了一种终端，包括：测量模块，用于在接收到的基站的参考信号中选择至少一个用于测量时间差，用选择的参考信号对多个邻区到达终端的时间差进行测量；上报模块，用于将测量得到的多个时间差以及选择的参考信号的类型上报到基站，供基站根据多个时间差以及选择的参考信号的类型估计终端的位置。
本申请的实施方式还提供了一种基站，包括：发送模块，用于发送多个参考信号，供终 端接收并在多个参考信号中选择至少一个用于测量时间差；接收模块，用于接收终端发送的多个邻区到达终端的时间差，以及选择的参考信号的类型；获取模块，用于根据接收的多个时间差和选择的参考信号的类型估计终端的位置。
本申请的实施方式还提供了一种电子设备，包括：至少一个处理器；以及，与至少一个处理器通信连接的存储器；其中，存储器存储有可被至少一个处理器执行的指令，指令被至少一个处理器执行，以使至少一个处理器能够执行上述的应用于终端的终端位置的测量方法，或执行应用于基站的终端位置的测量方法。
本申请的实施方式还提供了一种存储有计算机程序的计算机可读存储介质，计算机程序被处理器执行时实现上述的应用于终端的终端位置的测量方法，或实现应用于基站的终端位置的测量方法。
本申请的实施方式在接收的基站的参考信号中选择至少一个用于测量时间差，并用选择的参考信号对多个邻区到达终端的时间差进行测量。选择的用于测量的信号为基站配备的参考信号，不局限于定位参考信号，可以是原本业务需求的参考信号，能够避免消耗额外的传输信道资源，实现提高向基站上报的位置相关信息的比例。终端将测量得到的多个时间差以及参考信号的类型上报到基站，使得基站能够根据时间差以及参考信号的类型对终端的位置进行估计，能够一定程度上提高对终端定位的精度。
附图说明
一个或多个实施方式通过与之对应的附图中的图片进行示例性说明，这些示例性说明并不构成对实施方式的限定，附图中具有相同参考数字标号的元件表示为类似的元件，除非有特别申明，附图中的图不构成比例限制。
图1是根据本申请一实施方式中的应用于终端的终端位置的测量方法流程图；
图2是根据本申请一实施方式中的终端向基站上报时间差的时序图；
图3是根据本申请一实施方式中的应用于基站的终端位置的测量方法流程图；
图4是根据本申请一实施方式中的终端的结构示意图；
图5是根据本申请一实施方式中的基站的结构示意图；
图6是根据本申请一实施方式中的电子设备的结构示意图。
具体实施方式
为使本申请实施方式的目的、技术方案和优点更加清楚，下面将结合附图对本申请的各实施方式进行详细的阐述。然而，本领域的普通技术人员可以理解，在本申请各实施方式中，为了使读者更好地理解本申请而提出了许多技术细节。但是，即使没有这些技术细节和基于以下各实施方式的种种变化和修改，也可以实现本申请所要求保护的技术方案。
本申请的一实施方式涉及一种终端位置的测量方法，应用于具有最小化路测MDT功能的终端。在本实施方式中，终端在接收到的基站的参考信号中选择至少一个用于测量时间差，用选择的参考信号对多个邻区到达终端的时间差进行测量；将测量得到的多个时间差以及选择的参考信号的类型上报到基站，供基站根据多个时间差以及选择的参考信号的类型估计终端的位置。本实施方式的终端位置的测量方法的具体流程可以如图1所示。
位置信息是MDT技术采集的主要信息，直接决定MDT的使用效果。传统的终端获取位 置信息的主要有GPS定位、异系统测量和定时提前量(timing advance，简称“TA”)综合上行到达角(Angle-of-Arrival，简称“AOA”)定位方法三种。
对于根据GPS定位获取终端位置信息的方式，定位结果需要终端能够上报GPS位置并且打开GPS接收机。这种定位方法对终端的硬件配置要求较高，因而终端能够上报的信息的比例很少，一般不超过5％，而且只有在室外才能上报。使用WIFI，蓝牙等异系统测量的定位方法中，不仅需要异系统网络的配合，还需要对基站进行配置才能进行位置信息的测量，异系统网络的部署以及基站侧的定制化配置均具有较高难度，因此，这种定位方法也很难大面积使用。
TA+AOA的定位方法中，根据终端的收发时间差配合基站测量得到的发收时间差可以得到终端和基站的回路延迟，进而大致估计终端和基站的距离，再配合基站测量得到的AOA就可以实现确定终端位置相对基站天线的角度。然而，AOA的测量需要配置多天线接收，而很多基站只配置了比较少的接收天线，无法测量得到AOA。而且AOA作为一个角度，距离基站越远，精度越差。在没有AOA配合的情况下，仅根据终端与基站的回路延迟无法准确确定终端位置，只能根据收到的邻区信号粗略确定终端的大致方位，定位精度比较低。
除了上述三种传统定位方法之外，当前还有一种定位精度比较高的方法是由终端根据LTE系统的定位参考信号(Positioning reference signals，简称“PRS”)测量邻区到达终端的时间差，进而最终实现确定终端所处的位置。对时间差的测量不受外界遮挡、天线型号、天线朝向的影响，只受信号反射的影响，定位精度比较高。但这种方法需要在基站配置好PRS，并将相关参数通过特殊的渠道发送給终端，终端才能实现对时间差的测量。这种方法实际应用中受限较多，使用场景少。
下面对本实施方式中的应用于终端的终端位置的测量方法的实现细节进行具体的说明，以下内容仅为方便理解本方案的实现细节，并非实施本方案的必须。具体流程如图1所示，可包括如下步骤：
步骤101，在接收到的基站的参考信号中选择至少一个用于测量时间差，用选择的参考信号对多个邻区到达终端的时间差进行测量。
基站发送的参考信号可以包括以下之一或其任意组合：主辅同步信道、小区参考信号、定位参考信号PRS。其中小区参考信号又可以包括LTE系统中的小区专用参考信号(Cell-specific reference signals，简称“CRS”)信号，以及新无线接入技术(New Radio，简称“NR”)系统中的通道状态信息参考信号(Channel Status Information reference signals，简称“CSI-RS”)信号。
当在接收到的基站的参考信号中选择一个用于测量时间差时，终端可以在基站发送的参考信号中选择精度最高的参考信号用于测量时间差。一般来说，用于测量时间差的参考信号带宽越宽，测量精度越高。在LTE系统中的基站配备有PRS的情况下，选择PRS用以对时间差进行测量，能够获得精度较高的时间差数据。若基站未配备PRS，可以选择子载波数比较高的CRS。
在本实施方式中，终端用观察到达时间差(Observed Time Difference of Arrival，简称“OTDOA”)方法测量位置。在实际场景中，终端可以从如定位服务器等途径，获知基站配置了PRS，进而选择PRS测量时间差。其中，定位服务器包括LTE系统中的演进的服务移动位置中心(Evolved Serving Mobile Location Center，简称“E-SMLC”)或NR系统中的定位管 理功能(Location Management Function，简称“LMF”)模块等。
主辅同步信道以及小区参考信号等参考信号虽然相比PRS时间差测量精度较差，但这些参考信号本身就是业务需求的，终端使用这些参考信号对时间差进行测量，不需要消耗额外的资源，因此能够向基站上报的数据更多。另外，路测的目的是无线网络优化，而在某些场景下无线网络优化只需得到网络覆盖的大致情况，对于单个终端定位的精度要求不是特别高，因此一般采用栅格的方式进行处理。栅格的大小一般为10*10米，20*20米，50*50米，100*100米等。考虑到最小化路测的覆盖评估主要以比较粗的栅格粒度进行，若能够获得比较多的测量结果，就能够弥补定位精度的降低。因此除了选择限制条件多的定位参数参考信号进行时间差测量外，可以选择的限制条件少的参考信号进行时间差测量。
本领域的相关技术人员可以理解，本步骤中涉及的邻区到达终端的时间差，为邻区相对于终端的服务小区到达终端的时间差。即测量邻区到达终端的时间差以服务小区到该终端的时间为基准。
步骤102，将测量得到的多个时间差以及选择的参考信号的类型上报到基站，供基站根据时间差以及选择的参考信号的类型估计终端的位置。
具体地说，终端将测量得到的多个时间差以及选择的参考信号的类型上报到基站。基站根据接收的时间差和参考信号的类型估计终端的位置，实现对终端的定位。终端向基站上报时间差的时序图如图2所示。
终端向基站上报信息的方式根据终端的状态有所不同，可以分为即时上报和延后上报。在一个终端接入网络的例子中，终端将测量得到的时间差以及选择的参考信号的类型，通过测量报告(Measurement Report，简称“MR”)上报到基站。在一个终端未接入网络的例子中，终端将测量得到的多个时间差以及选择的参考信号的类型写入本地缓存，在终端接入网络后，将测量得到的多个时间差以及选择的参考信号的类型通过信令上报到基站。
在实际实施中，当终端处于通话态时，终端存在与基站的无线资源控制(Radio Resource Control，简称“RRC”)链接，终端可以在周期发送的测量报告中将时间差等信息上报給基站。当终端处于非通话态，即在空闲(IDLE)态时，在后续终端与基站建立RRC链接接入网络后，再使用信令把测量结果上报给基站。
在一个例子中，在将测量得到的多个时间差以及选择的参考信号类型上报到基站后，终端还可以根据选择的参考信号，生成时间差测量精度估计值；将时间差测量精度估计值上报到基站；其中，时间差测量精度估计值用于供基站对接收的多个时间差进行精度估计。将时间差测量精度估计值上报到基站，能够进一步地提高时间差测量精度的提高，并最终实现终端定位精度的提高。
除了时间差、参考信号的类型以及时间差测量精度估计值之外，终端还可以将其它测量结果上报至基站，如GPS测量得到的经纬度等。
在本实施方式中，终端在接收的基站的参考信号中选择至少一个用于测量时间差，并用选择的参考信号对多个邻区到达终端的时间差进行测量。选择的用于测量的信号为基站配备的参考信号，不局限于定位参考信号，可以是原本业务需求的参考信号，能够避免消耗额外的传输信道资源，实现提高向基站上报的位置相关信息的比例。终端将测量得到的多个时间差以及参考信号的类型上报到基站，使得基站能够根据时间差以及参考信号的类型对终端的位置进行估计，能够一定程度上提高对终端定位的精度。
本申请的一实施方式涉及一种终端位置的测量方法，应用于基站。在本实施方式中，基站发送多个参考信号，供终端接收并在多个参考信号中选择至少一个用于测量时间差；接收终端发送的多个邻区到达终端的时间差，以及选择的参考信号的类型；根据接收的时间差和选择的参考信号类型估计终端的位置。
下面对本实施方式中的应用于基站终端位置的测量方法的实现细节进行具体的说明，以下内容仅为方便理解本方案的实现细节，并非实施本方案的必须。具体流程如图3所示，可包括如下步骤：
步骤301，发送多个参考信号，供终端接收并在多个参考信号中选择至少一个用于测量时间差。
在本步骤中，基站发送的多个参考信号可以包括定位参考信号PRS、小区参考信号和主辅同步信号等参考信号。
步骤302，接收终端发送的多个邻区到达终端的时间差，以及选择的参考信号的类型。
其中，基站接收的终端发送的时间差为终端根据选择的参考信号测量得到的，参考信号的类型为用于测量时间差的信号类型。不难看出，本步骤与上一实施方式中应用于终端的位置测量方法的实施细节相对应，上一实施方式中提到的相关技术细节在本实施方式中依然有效，为了减少重复，这里不再赘述。
步骤303，根据接收的多个时间差和选择的参考信号类型估计终端的位置。
在本步骤中，基站根据接收的多个时间差和参考信号的类型获取终端的位置信息。基站能够将邻区到终端的时间差转化为距离差，进而根据这些距离差和邻区的位置，结合参考信号的类型实现对终端的定位。
在本实施方式中，基站接收终端发送的多个邻区到达终端的信号传输的时间差，以及用于测量时间差的参考信号的类型。进而根据接收的多个时间差和参考信号的类型获取终端的位置信息，结合参考信号类型获取终端位置能够使得获取的位置信息精度更高。且本实施方式对终端位置信息的测量不依赖终端或基站的硬件配置，能够使得对终端位置的获取更加便捷。
本申请的一实施方式涉及一种终端，如图4所示，包括：
测量模块401，用于在接收到的基站的参考信号中选择至少一个用于测量时间差，用选择的参考信号对多个邻区到达终端的时间差进行测量；
上报模块402，用于将测量得到的多个时间差以及选择的参考信号的类型上报到基站，供基站根据多个时间差以及选择的参考信号的类型获取终端的位置信息。
在一个例子中，当在接收到的基站的参考信号中选择一个用于测量时间差时，测量模块401，还可以用于选择接收到的基站的参考信号中精度最高的参考信号用于测量时间差。
在一个例子中，终端还可以包括：精度估计模块(图中未示出)，用于根据选择的参考信号，生成时间差测量精度估计值；将时间差测量精度估计值上报到基站；其中，时间差测量精度估计值用于供基站对接收的多个时间差进行精度估计。
在一个例子中，上报模块402，还可以用于在终端接入网络的情况下，将测量得到的多个时间差以及选择的参考信号的类型，通过测量报告上报到基站；在终端未接入网络的情况下，将测量得到的多个时间差以及选择的参考信号的类型写入本地缓存，在终端接入网络后，将测量得到的多个时间差以及选择的参考信号的类型通过信令上报到基站。
本实施方式提供的终端能够在接收的基站的参考信号中选择至少一个用于测量时间差，并用选择的参考信号对多个邻区到达终端的时间差进行测量。选择的用于测量的信号为基站配备的参考信号，不局限于定位参考信号，可以是原本业务需求的参考信号，能够避免消耗额外的传输信道资源，实现提高向基站上报的位置相关信息的比例。终端将测量得到的多个时间差以及参考信号的类型上报到基站，使得基站能够根据时间差以及参考信号的类型对终端的位置进行估计，能够一定程度上提高对终端定位的精度。
本申请的一实施方式涉及一种基站，如图5所示，包括：
发送模块501，用于发送多个参考信号，供终端接收并在所述多个参考信号中选择至少一个用于测量时间差；
接收模块502，用于接收终端发送的多个邻区到达终端的时间差，以及选择的参考信号的类型；
获取模块503，用于根据接收的多个时间差和选择的参考信号的类型估计终端的位置。
本实施方式提供的基站能够接收终端发送的多个邻区到达终端的信号传输的时间差，以及用于测量时间差的参考信号的类型。进而根据接收的多个时间差和参考信号的类型获取终端的位置信息，结合参考信号类型获取终端位置能够使得获取的位置信息精度更高。且本实施方式对终端位置信息的测量不依赖终端或基站的硬件配置，能够使得对终端位置的获取更加便捷。
值得一提的是，本申请上述实施方式中所涉及到的各模块均为逻辑模块，在实际应用中，一个逻辑单元可以是一个物理单元，也可以是一个物理单元的一部分，还可以以多个物理单元的组合实现。此外，为了突出本申请的创新部分，本实施方式中并没有将与解决本申请所提出的技术问题关系不太密切的单元引入，但这并不表明本实施方式中不存在其它的单元。
本申请的实施方式还提供一种电子设备，如图6所示，包括至少一个处理器601；以及，与至少一个处理器601通信连接的存储器602；其中，存储器602存储有可被至少一个处理器601执行的指令，指令被至少一个处理器601执行，以使至少一个处理器601能够执行上述应用于终端的终端位置的测量方法，或执行应用于基站的终端位置的测量方法。
其中，存储器602和处理器601采用总线方式连接，总线可以包括任意数量的互联的总线和桥，总线将一个或多个处理器601和存储器602的各种电路连接在一起。总线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连接在一起，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。总线接口在总线和收发机之间提供接口。收发机可以是一个元件，也可以是多个元件，比如多个接收器和发送器，提供用于在传输介质上与各种其他装置通信的单元。经处理器601处理的数据通过天线在无线介质上进行传输，进一步，天线还接收数据并将数据传送给处理器601。
处理器601负责管理总线和通常的处理，还可以提供各种功能，包括定时，外围接口，电压调节、电源管理以及其他控制功能。而存储器602可以被用于存储处理器601在执行操作时所使用的数据。
上述产品可执行本申请实施方式所提供的方法，具备执行方法相应的功能模块和有益效果，未在本实施方式中详尽描述的技术细节，可参见本申请实施方式所提供的方法。
本申请的实施方式还提供一种计算机可读存储介质，存储有计算机程序。计算机程序被处理器执行时实现上述的应用于终端的终端位置的测量方法，或实现应用于基站的终端位置 的测量方法。
本领域技术人员可以理解，实现上述实施方式方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，该程序存储在一个存储介质中，包括若干指令用以使得一个设备(可以是单片机，芯片等)或处理器(processor)执行本申请各个实施方式方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
上述实施方式是提供给本领域普通技术人员来实现和使用本申请的，本领域普通技术人员可以在不脱离本申请的申请思想的情况下，对上述实施方式做出种种修改或变化，因而本申请的保护范围并不被上述实施方式所限，而应该符合权利要求书所提到的创新性特征的最大范围。

Claims (10)

  1. 一种终端位置的测量方法，应用于具有最小化路测MDT功能的终端，包括：
    在接收到的基站的参考信号中选择至少一个用于测量时间差，用选择的参考信号对多个邻区到达所述终端的时间差进行测量；
    将测量得到的多个时间差以及所述选择的参考信号的类型上报到所述基站，供所述基站根据所述多个时间差以及所述选择的参考信号的类型估计所述终端的位置。
  2. 根据权利要求1所述的终端位置的测量方法，其中，当在接收到的基站的参考信号中选择一个用于测量时间差时，所述选择的参考信号为所述接收到的基站的参考信号中精度最高的参考信号。
  3. 根据权利要求1所述的终端位置的测量方法，其中，在所述将测量得到的多个时间差以及所述选择的参考信号的类型上报到所述基站后，还包括：
    根据所述选择的参考信号，生成时间差测量精度估计值；
    将所述时间差测量精度估计值上报到所述基站；
    其中，所述时间差测量精度估计值用于供所述基站对接收的所述多个时间差进行精度估计。
  4. 根据权利要求1所述的终端位置的测量方法，其中，所述将测量得到的多个时间差以及所述选择的参考信号的类型上报到所述基站，包括：
    在所述终端接入网络的情况下，将测量得到的多个时间差以及所述选择的参考信号的类型，通过测量报告上报到所述基站；
    在所述终端未接入网络的情况下，将测量得到的多个时间差以及所述选择的参考信号的类型写入本地缓存，在所述终端接入网络后，将测量得到的多个时间差以及所述选择的参考信号的类型通过信令上报到所述基站。
  5. 根据权利要求1至4中任一项所述的终端位置的测量方法，其中，所述选择的参考信号包括以下之一或其任意组合：定位参考信号PRS、小区参考信号和主辅同步信号。
  6. 一种终端位置的测量方法，应用于基站，包括：
    发送多个参考信号，供终端接收并在所述多个参考信号中选择至少一个用于测量时间差；
    接收所述终端发送的多个邻区到达所述终端的时间差，以及选择的参考信号的类型；
    根据接收的多个时间差和所述选择的参考信号的类型估计所述终端的位置。
  7. 一种终端，包括：
    测量模块，用于在接收到的基站的参考信号中选择至少一个用于测量时间差，用选择的参考信号对多个邻区到达所述终端的时间差进行测量；
    上报模块，用于将测量得到的多个时间差以及所述选择的参考信号的类型上报到所述基 站，供所述基站根据所述多个时间差以及所述选择的参考信号类型估计所述终端的位置。
  8. 一种基站，包括：
    发送模块，用于发送多个参考信号，供终端接收并在所述多个参考信号中选择至少一个用于测量时间差；
    接收模块，用于接收所述终端发送的多个邻区到达所述终端的时间差，以及选择的参考信号的类型；
    获取模块，用于根据接收的多个时间差和所述选择的参考信号的类型估计所述终端的位置。
  9. 一种电子设备，包括：
    至少一个处理器；以及，
    与所述至少一个处理器通信连接的存储器；其中，
    所述存储器存储有可被所述至少一个处理器执行的指令，所述指令被所述至少一个处理器执行，以使所述至少一个处理器能够执行如权利要求1至5中任一项所述的终端位置的测量方法，或执行如权利要求6中所述的终端位置的测量方法。
  10. 一种计算机可读存储介质，存储有计算机程序，其中，所述计算机程序被处理器执行时实现权利要求1至5中任一项所述的终端位置的测量方法，或实现如权利要求6中所述的终端位置的测量方法。
PCT/CN2022/128125 2021-11-23 2022-10-28 终端位置的测量方法、终端、基站、电子设备和存储介质 WO2023093453A1 (zh)

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