WO2018064896A1 - Procédé, appareil et système de positionnement, et procédé et terminal de détermination de signal de positionnement - Google Patents

Procédé, appareil et système de positionnement, et procédé et terminal de détermination de signal de positionnement Download PDF

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Publication number
WO2018064896A1
WO2018064896A1 PCT/CN2017/089368 CN2017089368W WO2018064896A1 WO 2018064896 A1 WO2018064896 A1 WO 2018064896A1 CN 2017089368 W CN2017089368 W CN 2017089368W WO 2018064896 A1 WO2018064896 A1 WO 2018064896A1
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WO
WIPO (PCT)
Prior art keywords
terminal
arrival
positioning
time difference
base stations
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PCT/CN2017/089368
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English (en)
Chinese (zh)
Inventor
康健超
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中兴通讯股份有限公司
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Publication of WO2018064896A1 publication Critical patent/WO2018064896A1/fr

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    • 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
    • H04W4/023—Services making use of location information using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
    • 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
    • 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

Definitions

  • This document relates to, but is not limited to, the field of mobile communications, and in particular to a positioning method, device and system, positioning signal determining method and terminal.
  • GPS Global Positioning System
  • wireless positioning usually performs terminal positioning by using a satellite and a base station.
  • the position of the mobile terminal can be calculated by using a triangular formula estimation algorithm according to the distance between the terminal and the base station.
  • the above positioning method is liable to cause an estimation error of the position of the mobile station.
  • the positioning accuracy depends largely on the distribution of the base station and the coverage of the base station. Sometimes the error will exceed one kilometer, which will result in very poor accuracy of the terminal positioning result.
  • the embodiment of the invention provides a positioning method, a device and a system, a positioning signal determining method and a terminal, which can improve the positioning accuracy of the terminal.
  • an embodiment of the present invention provides a positioning method, where the method includes:
  • the positioning of the to-be-located terminal according to the positioning signal includes:
  • the time parameter includes: an average arrival time difference.
  • an embodiment of the present invention further provides a positioning signal determining method, where the method includes:
  • the terminal sends a trigger instruction for acquiring a time difference of arrival to the base station
  • the terminal determines an average time difference of arrival by the time difference of arrival returned by the plurality of base stations, and uses the average time difference of arrival as a positioning signal.
  • the terminal determines an average time difference of arrival by using a time difference of arrival returned by the multiple base stations, including:
  • the terminal combines the multiple base stations according to three base stations;
  • the two arrival time differences determined are taken as the average arrival time difference.
  • the method further includes: after the terminal sends a triggering instruction for obtaining a time difference of arrival to the base station, before the terminal receives the time difference of arrival returned by the multiple base stations, the method further includes:
  • the terminal sends type indication information to the base station, where the type indication information is used to indicate a data type supported by the terminal;
  • the arrival time difference returned by the terminal receiving multiple base stations includes:
  • Receiving, by the terminal, a time difference of arrival returned by the multiple base stations is that the multiple base stations return according to the data type indicated in the type indication information.
  • the method further includes:
  • the terminal Transmitting, by the terminal, the positioning signal to a positioning device, so that the positioning device determines The location of the terminal.
  • the positioning device is built in the terminal, or the positioning device is separately disposed from the terminal.
  • an embodiment of the present invention further provides a positioning apparatus, where the apparatus includes:
  • An acquiring module configured to acquire a positioning signal of the terminal to be located, where the positioning signal includes: a time parameter;
  • the positioning module is configured to locate the to-be-positioned terminal according to the positioning signal.
  • the positioning module includes any one of the following units or two types of units:
  • a first positioning unit configured to substitute the positioning signal into a preset formula, and calculate a position of the terminal to be located
  • the second positioning unit is configured to perform a query in the preset positioning signal list database according to the positioning signal, and use the query result as the location of the terminal to be located.
  • the time parameter includes: an average arrival time difference.
  • an embodiment of the present invention further provides a terminal, where the terminal includes:
  • a first sending module configured to send a trigger instruction for acquiring a time difference of arrival to the base station
  • a first receiving module configured to receive a time difference of arrival returned by multiple base stations
  • the determining module is configured to determine an average time difference of arrival by the time difference of arrival returned by the plurality of base stations, and use the average time difference of arrival as a positioning signal.
  • the determining module includes:
  • a combining unit configured to combine the plurality of base stations according to three base stations
  • Selecting a unit configured to determine, from the combined result, two arrival time differences corresponding to a group of base stations with the smallest arrival time difference;
  • the determining unit is configured to set the determined two arrival time differences as the average time difference of arrival.
  • the terminal further includes: a second sending module, configured to send the type indication information to the base station after receiving the triggering instruction for acquiring the time difference of arrival to the base station, before receiving the time difference of arrival returned by the multiple base stations, where Type indication information is used to indicate a data type supported by the terminal;
  • a second receiving module configured to receive type confirmation information returned by the base station
  • the time difference of arrival returned by the received multiple base stations is returned by the multiple base stations according to the data type indicated in the type indication information.
  • the terminal further includes: a third sending module, configured to determine an average time difference of arrival after the time difference of arrival returned by the multiple base stations, and use the average time difference of arrival as a positioning signal, and then locate the positioning The signal is sent to the positioning device such that the positioning device determines the location of the terminal.
  • a third sending module configured to determine an average time difference of arrival after the time difference of arrival returned by the multiple base stations, and use the average time difference of arrival as a positioning signal, and then locate the positioning The signal is sent to the positioning device such that the positioning device determines the location of the terminal.
  • an embodiment of the present invention further provides a positioning system, including: the positioning device and the terminal.
  • the positioning device is located in the terminal, or the positioning device is separately disposed from the terminal.
  • the terminal is located according to the positioning signal including the time parameter of the terminal to be located, because the positioning signal is time parameter information, so that the positioning result can be made more accurate, and the positioning accuracy is effectively improved.
  • FIG. 1 is a flow chart of a method for positioning in an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for determining a positioning signal in an embodiment of the present invention
  • FIG. 3 is a structural block diagram of a positioning system in an embodiment of the present invention.
  • FIG. 4 is another structural block diagram of a positioning system in an embodiment of the present invention.
  • FIG. 5 is a flowchart of another method of the positioning method in the embodiment of the present invention.
  • FIG. 6 is a schematic flow chart of determining the location of the mobile terminal after the positioning device receives the positioning signal according to the embodiment of the present invention.
  • the embodiment of the invention provides a positioning method, device and system, positioning signal determining method and The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
  • a positioning method and a positioning signal determining method are proposed, wherein the positioning signal is a signal carrying a time parameter, and the method for calculating the time difference of arrival (TDOA) is improved, so that the error rate can be determined small.
  • TDOA time difference of arrival
  • the terminal may be a mobile terminal, for example, a terminal device having a smart module such as a mobile phone or a tablet computer, or a portable device, for example, a smart watch or the like may be used as the terminal.
  • a mobile terminal for example, a terminal device having a smart module such as a mobile phone or a tablet computer, or a portable device, for example, a smart watch or the like may be used as the terminal.
  • a positioning method which may include the following steps:
  • Step 101 Acquire a positioning signal of the terminal to be located, where the positioning signal includes: a time parameter;
  • the above time parameter may be an average time difference of arrival, and the method of positioning by the average time difference is higher in accuracy than the current way of positioning by the time difference.
  • the terminal sends a trigger instruction for acquiring a time difference of arrival to the base station;
  • S2 receiving, by the terminal, a time difference of arrival returned by multiple base stations
  • the terminal determines the average time difference of arrival by using the time difference of arrival returned by the multiple base stations, and uses the average time difference of arrival as a positioning signal.
  • the terminal may combine multiple base stations according to three base stations. From the combined result, two arrival time differences corresponding to a group of base stations having the smallest difference in arrival time are determined; the two arrival time differences determined are taken as the average arrival time difference.
  • the terminal can determine the number of base stations that receive the information, and save the time measurement value TDOA value of each base station, considering that the accuracy of each TDOA estimation is greatly different, so if it is directly based on the TDOA value of a certain base station, Positioning will result in a large positioning error. Therefore, in this example, N base stations can be arranged and combined, 3 base stations are found from N base stations, and the calculated minimum two TDOA values are assigned to Average arrival time difference.
  • TDOA Time Difference of Arrival
  • TDOA Time Difference of Arrival
  • the position of the mobile station by detecting the time difference of the signal arriving at the two base stations, instead of the absolute time of arrival, and reducing the time synchronization requirement.
  • one of the base stations is used as a standard base station, and the detection signals are respectively calculated.
  • the time difference between the quasi-base station and the two non-standard base stations can detect two TDOAs, and the mobile station is located at the intersection of two hyperbolic curves determined by TDOA.
  • the position of the terminal to be located may be calculated by substituting the positioning signal into a preset formula, or a positioning signal list database may be preset, and the positioning is determined.
  • the query may be directly performed in the preset positioning signal list database according to the positioning signal, and the query result is used as the location of the terminal to be located.
  • the terminal can inform the base station of the type of data it supports, so that the base station When the terminal returns data, it can select the data type that the terminal side can support, so as to avoid data incompatibility.
  • the terminal may send the type indication information to the base station after receiving the triggering instruction for obtaining the time difference of the arrival of the base station, before receiving the trigger of the arrival time difference, where the type indication information is used to indicate the data type supported by the terminal.
  • the terminal receives the type confirmation information returned by the base station; correspondingly, the time difference of arrival returned by the terminal to the plurality of base stations is returned by the plurality of base stations according to the data type indicated in the type indication information.
  • the data types supported by the base station are: Type 1, Type 2, Type 3, Type 4, and Type 5, and the terminal only supports Type 1 and Type 2.
  • the base station knows that the terminal only supports the terminal.
  • Type 1 and Type 2 when the base station returns data to the terminal, it can return type 1 data to the terminal or return type 2 data.
  • Step 102 Position the terminal to be located according to the positioning signal.
  • the terminal may send the positioning signal to the positioning device, so that the positioning device can determine the position of the terminal according to the positioning signal.
  • the positioning device may be built in the terminal, or may be separately set from the terminal, for example, may be externally connected to the terminal, or connected to the terminal through Bluetooth or wireless, and configured on the base station.
  • the position of the positioning device is not limited in this application.
  • a positioning system is also provided in the embodiment of the present invention, as described in the following embodiments. Since the principle of the positioning system to solve the problem is similar to the positioning method, the implementation of the positioning system can be referred to the implementation of the positioning method, and the repeated description will not be repeated.
  • the term "unit” or “module” may implement a combination of software and/or hardware of a predetermined function. Although the device described in the following embodiments is more The best is implemented in software, but hardware, or a combination of software and hardware, is also possible and conceived.
  • 3 and FIG. 4 are a structural block diagram of a positioning system according to an embodiment of the present invention. As shown in FIG. 3 and FIG.
  • the method may include: a terminal and a positioning device, where the terminal may include: a first sending module 301, a first The receiving module 302 and the determining module 303, the positioning device may include: an obtaining module 201 and a positioning module 202, wherein:
  • the first sending module 301 is configured to send a trigger instruction for acquiring a time difference of arrival to the base station;
  • the first receiving module 302 is configured to receive a time difference of arrival returned by the multiple base stations
  • the determining module 303 is configured to determine an average time difference of arrival by the time difference of arrival returned by the plurality of base stations, and use the average time difference of arrival as a positioning signal.
  • the obtaining module 201 may be configured to acquire a positioning signal of the terminal to be located, where the positioning signal includes: a time parameter;
  • the positioning module 202 can be configured to locate the to-be-positioned terminal according to the positioning signal.
  • the positioning module 201 may include any one of the following units or two types of units: a first positioning unit configured to substitute the positioning signal into a preset formula to calculate a position of the terminal to be located;
  • the locating unit is configured to perform a query in the preset positioning signal list database according to the positioning signal, and use the query result as the location of the terminal to be located.
  • the above time parameter may include: an average arrival time difference.
  • the determining module 303 may include: a combining unit configured to combine the plurality of base stations according to a group of three base stations; and the selecting unit is configured to determine two arrivals from the combined result. Two arrival time differences corresponding to a group of base stations having the smallest time difference; and a determining unit configured to use the determined two arrival time differences as the average arrival time difference.
  • the terminal may further include: a second sending module, configured to send the type indication information to the base station after receiving the triggering instruction for acquiring the time difference of arrival to the base station, before receiving the time difference of arrival returned by the multiple base stations, where The type indication information is used to indicate the data type supported by the terminal; the second receiving module is configured to receive the type confirmation information returned by the base station; wherein, the received time difference returned by the multiple base stations is the multiple The base station returns according to the type of data indicated in the type indication information.
  • a second sending module configured to send the type indication information to the base station after receiving the triggering instruction for acquiring the time difference of arrival to the base station, before receiving the time difference of arrival returned by the multiple base stations, where The type indication information is used to indicate the data type supported by the terminal
  • the second receiving module is configured to receive the type confirmation information returned by the base station; wherein, the received time difference returned by the multiple base stations is the multiple The base station returns according to the type of data indicated in the type indication information.
  • the terminal may further include: a third sending module, configured to determine an average time difference of arrival after the time difference of arrival returned by the multiple base stations, and use the average time difference of arrival as a positioning signal, The positioning signal is sent to the positioning device such that the positioning device determines the position of the terminal.
  • a third sending module configured to determine an average time difference of arrival after the time difference of arrival returned by the multiple base stations, and use the average time difference of arrival as a positioning signal, The positioning signal is sent to the positioning device such that the positioning device determines the position of the terminal.
  • the positioning device is located in the terminal. As shown in FIG. 4, the positioning device is separately disposed from the terminal.
  • the specific location of the positioning device can be set according to actual needs, and the hardware or software can be used. This application does not limit this.
  • a time-based GPS positioning device which may include the following modules:
  • an acquiring module which receives positioning signal confirmation information, wherein the positioning signal confirmation information is used to determine a time parameter type of the positioning signal supported by the mobile terminal;
  • the sending module sends the positioning signal configuration information and the positioning signal confirmation information to the mobile terminal, wherein the positioning signal configuration information is used to indicate a time parameter type for measuring the positioning signal, and the positioning signal confirmation information is used to confirm that the mobile terminal supports obtaining the positioning. Information about the time parameter type of the signal.
  • the receiving module receives the positioning and capturing information sent by the mobile terminal, where the positioning information, that is, the TDOA value (corresponding to the positioning signal in the above) is located.
  • a determining module that determines location information of the mobile terminal based on the positioning acquisition information (ie, the time parameter used for positioning).
  • the position of the mobile terminal can be determined with a small error rate, thereby improving the accuracy of positioning the mobile terminal.
  • the positioning device can be applied to locate the mobile terminal, the positioning device can be integrated in the terminal GPS chip, or can be set separately, and the positioning algorithm can be implemented by software.
  • the execution body of the positioning method may be a mobile terminal, and the mobile terminal is a function having a function of acquiring a positioning signal indicated by positioning signal configuration information. End, can include the following steps:
  • Step 401 The mobile terminal acquires a positioning signal.
  • the positioning signal can be an average time difference of arrival, ie an average TDOA.
  • the TDOA may be obtained by computing a terminal signal received by the first base station and a terminal signal received by the second base station, so that the TDOA value can be obtained.
  • the above average TDOA value can be calculated as follows:
  • the terminal acquires the information about the base station at the location.
  • the terminal may obtain the base station information by sending a preset instruction according to the protocol.
  • the base station side After receiving the signal from the terminal, the base station side initiates measurement of the signal arrival time of all base stations that interact with the terminal;
  • S3 The terminal determines the number of base stations that receive the information, and saves the time measurement value TDOA value of each base station;
  • This average time is related to the arrival time of all acknowledgment signals.
  • Step 402 The terminal sends the positioning signal to the GPS positioning device.
  • the above-mentioned average TDOA is sent to the positioning device to achieve the purpose of determining the position of the mobile terminal with a small error rate, thereby effectively improving the accuracy of positioning the mobile terminal.
  • FIG. 6 is a schematic flowchart of determining the location of the mobile terminal after the positioning device receives the positioning signal, and may include the following steps: specifically: the following steps:
  • Step 501 The positioning device receives the positioning signal.
  • the positioning signal may be an average TDOA calculated by the terminal.
  • the average TDOA may be determined according to signals transmitted on a plurality of network node carriers, for example, determined according to signals transmitted on one or more carriers of the base station.
  • Step 502 Determine a specific location of the mobile terminal according to the positioning signal.
  • the location of the mobile terminal can be determined in two ways:
  • Method 1 According to the positioning signal, the position of the mobile terminal is obtained by formula calculation, thereby determining the location information of the mobile terminal.
  • Method 2 According to the positioning signal, obtain a location of the mobile terminal by querying the positioning signal list database, thereby determining location information of the mobile terminal, where the positioning signal list may be a list established according to empirical data, and may be preset in positioning In the device.
  • a process is also provided for the terminal, the base station, and the positioning device to perform data interaction to establish a connection, and the flow is mainly for explaining the data between the three in the preparation state before the positioning.
  • Information interaction can include:
  • Step 1 The positioning device sends the positioning signal confirmation information to the base station, where the positioning signal confirmation information can be used to confirm the time parameter type of the mobile terminal supporting the acquisition of the positioning signal;
  • Step 2 The base station sends positioning signal acknowledgement information to the mobile terminal, and is used to confirm that the base station has received the positioning signal acknowledgement information;
  • Step 3 The mobile terminal sends the positioning signal support information to the base station, where the positioning signal support information is used to indicate the type of the time parameter for acquiring the positioning signal supported by the mobile terminal, for example, data type 1 and data type 2;
  • Step 4 The base station sends the positioning signal support information to the positioning device, that is, the base station sends the data type 1 and the data type 2 to the positioning device, indicating that the data type supported by the terminal is known;
  • Step 5 The positioning device sends the positioning signal configuration information to the base station, where the positioning signal configuration information is used to inform the base station of the time parameter type of the positioning signal and the type of the positioning signal, wherein the positioning signal type may be one or more of the base stations.
  • the positioning signal transmitted on the carrier, the time parameter type of the positioning signal may be the calculated average TDOA value;
  • Step 6 The base station sends positioning signal configuration information to the mobile terminal.
  • Step 7 The mobile terminal acquires positioning signal information indicated by the positioning signal configuration information according to the positioning signal configuration information.
  • Step 8 The mobile terminal sends the positioning signal information to the base station, and receives the feedback of the base station, thereby calculating an average TDOA value, and transmitting the average TDOA value to the positioning device to determine the location of the mobile terminal.
  • the position of the mobile terminal is determined by calculating the average TDOA value, so that the position of the mobile terminal can be determined with a small error rate, and the accuracy of the positioning of the mobile terminal is effectively improved.
  • the positioning device may be disposed in the mobile terminal, and the mobile terminal and the positioning device may be separately disposed.
  • the positioning device may also be integrated in the base station or may be independently set.
  • the positioning device may adopt software and/or hardware. to realise.
  • computer storage medium includes volatile and nonvolatile, implemented in any method or technology for storing information, such as computer readable instructions, data structures, program modules, or other data. , removable and non-removable media.
  • Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridge, magnetic tape, magnetic disk storage or other magnetic storage device, or may Any other medium used to store the desired information and that can be accessed by the computer.
  • communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and can include any information delivery media.
  • the above technical solution can make the positioning result more accurate and achieve the technical effect of effectively improving the positioning accuracy.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention porte sur un procédé, un appareil et un système de positionnement, ainsi qu'un procédé et un terminal de détermination de signal de positionnement, le procédé de positionnement consistant à : obtenir un signal de positionnement pour un terminal à positionner (S101), le signal de positionnement comprenant des paramètres temporels ; et positionner le terminal à positionner selon le signal de positionnement (S102).
PCT/CN2017/089368 2016-10-08 2017-06-21 Procédé, appareil et système de positionnement, et procédé et terminal de détermination de signal de positionnement WO2018064896A1 (fr)

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CN201610881944.3 2016-10-08
CN201610881944.3A CN107920327B (zh) 2016-10-08 2016-10-08 一种定位方法、装置和系统、定位信号确定方法及终端

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