WO2020107141A1 - 定位的方法和装置 - Google Patents

定位的方法和装置 Download PDF

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Publication number
WO2020107141A1
WO2020107141A1 PCT/CN2018/117379 CN2018117379W WO2020107141A1 WO 2020107141 A1 WO2020107141 A1 WO 2020107141A1 CN 2018117379 W CN2018117379 W CN 2018117379W WO 2020107141 A1 WO2020107141 A1 WO 2020107141A1
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WO
WIPO (PCT)
Prior art keywords
time
score
terminal
precision
accuracy
Prior art date
Application number
PCT/CN2018/117379
Other languages
English (en)
French (fr)
Inventor
杨锐
金辉
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP18941203.4A priority Critical patent/EP3860159A4/en
Priority to CN201880094662.6A priority patent/CN112313973B/zh
Priority to PCT/CN2018/117379 priority patent/WO2020107141A1/zh
Publication of WO2020107141A1 publication Critical patent/WO2020107141A1/zh

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/38Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
    • G01S19/39Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/42Determining position
    • G01S19/45Determining position by combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement
    • G01S19/46Determining position by combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement the supplementary measurement being of a radio-wave signal type
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/38Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
    • G01S19/39Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/396Determining accuracy or reliability of position or pseudorange measurements
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S5/00Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02Position-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
    • G01S5/0205Details
    • G01S5/0244Accuracy or reliability of position solution or of measurements contributing thereto
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S5/00Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02Position-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
    • G01S5/0257Hybrid positioning
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S5/00Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02Position-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
    • G01S5/12Position-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 by co-ordinating position lines of different shape, e.g. hyperbolic, circular, elliptical or radial
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S5/00Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02Position-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
    • G01S5/14Determining absolute distances from a plurality of spaced points of known location
    • G01S5/145Using a supplementary range measurement, e.g. based on pseudo-range measurements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W64/00Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/006Locating 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

Definitions

  • This embodiment relates to the technical field of terminals, and in particular, to a positioning method and device.
  • the current positioning methods of mobile devices mainly include global positioning system (global positioning system (GPS) positioning and network positioning).
  • GPS global positioning system
  • the current method for determining the location of a mobile device is to directly determine the currently located location as the location of the mobile device; however, due to changes in satellite orbits and changes in climatic factors, sometimes the location of the mobile device and the mobile device that cause GPS positioning There is a large error between the actual location of the; in addition, due to changes in the network signal quality, sometimes there will be a large error between the location of the mobile device located by the network and the actual location of the mobile device. Therefore, directly determining the currently located location as the location of the mobile device has a problem that the determined location is not accurate, thereby affecting users' use of location-based applications.
  • the present application provides a positioning method and device to improve the accuracy of the determined location of the mobile device.
  • the present application provides a positioning method, which is applied to a terminal.
  • the method includes:
  • the current position of the terminal is determined according to the first position information and the second position information, and the second position information is the terminal Location information corresponding to the third position obtained by positioning, where the third position is the position of the terminal determined before the first position is obtained by the terminal.
  • the position information obtained by the current positioning and the position information of the terminal determined before the current positioning are comprehensively considered to determine whether the position obtained by the previous positioning is more accurate or the position of the terminal determined before the current positioning is more accurate, rather than directly
  • the position obtained by the current positioning is used as the position of the terminal, thereby improving the accuracy of determining the position of the terminal.
  • the first position is determined to be the current s position.
  • the currently located position is determined as the current position of the terminal. Since the currently located position time is relatively new, the determined terminal is guaranteed to some extent The accuracy of the location.
  • the first position information further includes: a first time to locate the first position and a first accuracy of the first position
  • the second position information further includes: positioning The second time of the third position and the second accuracy of the third position
  • the determining the current position of the terminal according to the first position information and the second position information includes:
  • the current position of the terminal is determined from the first position and the third position according to the first time, the second time, the first precision, and the second precision.
  • the time to locate the first position and the third position and the accuracy of the first position and the third position are comprehensively considered to determine whether the first position is more accurate or the third position (the terminal determined before the first position is located) Location) is more accurate, thereby improving the accuracy of the determined terminal location.
  • the first position information further includes a first way to locate the first position
  • the second position information further includes a second way to locate the third position
  • determining the current location of the terminal from the first location and the third location includes:
  • the first time, the second time, the first precision, the second precision, the first mode and the second mode, from the first position and the third position Determine the current location of the terminal.
  • the accuracy of the first position and the third position are comprehensively considered to determine the position of the terminal, and the method of positioning the first position and the third position is also considered. The accuracy of the determined terminal position is further improved.
  • the terminal stores a first correspondence relationship and a second correspondence relationship
  • the first correspondence relationship includes a plurality of preset time difference ranges, and a time score corresponding to each preset time difference range
  • the second correspondence The relationship includes multiple preset precision difference ranges, and the accuracy score corresponding to each preset precision difference range.
  • the determination of the first position and the third position based on the first time, the second time, the first accuracy, and the second accuracy The current location of the terminal, including:
  • the current location of the terminal is determined from the first location and the third location according to the decision score and the preset threshold.
  • determining the target time score based on the first correspondence and the time difference includes:
  • the time score corresponding to the target preset time difference range is the target time score.
  • determining the target accuracy score based on the second correspondence and the difference in accuracy includes:
  • the accuracy score corresponding to the target preset accuracy difference range is the target accuracy score.
  • determining the judgment score according to the time score and the accuracy score includes:
  • the decision score is obtained.
  • determining the current location of the terminal from the first location and the third location according to the decision score and the preset threshold includes:
  • the decision score is greater than or equal to the preset threshold, it is determined that the first location is the current location of the terminal;
  • the decision score is less than the preset threshold, it is determined that the third location is the current location of the terminal.
  • the determination of the current location of the terminal from a location and the third location includes:
  • the determining the current location of the terminal from the first location and the third location according to the decision score, the preset threshold, the first mode, and the second mode includes:
  • the decision score is greater than or equal to the second preset threshold and less than or equal to the first preset threshold, and the first manner and the second manner are the same, it is determined that the first position is the current location of the terminal s position;
  • the third location is determined to be the terminal Current location.
  • an embodiment of the present application provides a positioning device, including:
  • a positioning module configured to position the device to obtain first position information, where the first position information includes the first position obtained by the positioning
  • a determining module configured to determine the current position of the device according to the first position information and the second position information if the first position is different from the second position located last time, and the second position
  • the information is position information corresponding to when the device is positioned to obtain a third position
  • the third position is the position of the device determined before the device obtains the first position.
  • the determination module is further configured to determine the position if the first position is different from the second position that was located last time and the device cannot obtain the third position The first position is the current position of the device.
  • the first position information further includes: a first time to locate the first position and a first accuracy of the first position
  • the second position information further includes: to locate the The second time of the third position and the second accuracy of the third position
  • the determining module is specifically configured to determine the first position and the third position based on the first time, the second time, the first precision, and the second precision The current location of the device.
  • the first position information further includes a first way to locate the first position
  • the second position information further includes a second way to locate the third position
  • the determining module is specifically configured to: from the first time, the second time, the first precision, the second precision, the first mode, and the second mode, select The current position of the device is determined from a position and the third position.
  • the device stores a first correspondence relationship and a second correspondence relationship
  • the first correspondence relationship includes a plurality of preset time difference ranges, and a time score corresponding to each preset time difference range
  • the second correspondence relationship includes a plurality of preset precision difference ranges, and a precision score corresponding to each preset precision difference range
  • the determination module is specifically configured to:
  • the current position of the device is determined from the first position and the third position according to the decision score and the preset threshold.
  • the determination module is specifically used to:
  • the time score corresponding to the target preset time difference range is the target time score.
  • the determination module is specifically used to:
  • the accuracy score corresponding to the target preset accuracy difference range is the target accuracy score.
  • the determination module is specifically used to:
  • the decision score is obtained.
  • the determination module is specifically used to:
  • the decision score is greater than or equal to the preset threshold, it is determined that the first location is the current location of the terminal;
  • the decision score is less than the preset threshold, it is determined that the third location is the current location of the terminal.
  • the device stores a first correspondence relationship and a second correspondence relationship
  • the first correspondence relationship includes a plurality of preset time difference ranges, and a time score corresponding to each preset time difference range
  • the second correspondence relationship includes a plurality of preset precision difference ranges, and a precision score corresponding to each preset precision difference range
  • the determination module is specifically configured to:
  • the current position of the device is determined from the first position and the third position according to the decision score, the preset threshold, the first manner, and the second manner.
  • the determination module is specifically used to:
  • the decision score is greater than or equal to the second preset threshold and less than or equal to the first preset threshold, and the first manner and the second manner are the same, it is determined that the first position is the current location of the terminal s position;
  • the third location is determined to be the terminal Current location.
  • this embodiment provides a terminal, including a processor
  • the processor is used to couple with a memory, read and execute instructions in the memory, to implement the first aspect and the method described in any possible design of the first aspect.
  • the memory is also included.
  • the present application provides a computer storage medium, including instructions, which when executed on a computer, causes the computer to perform the method as described in the first aspect and any possible design of the first aspect.
  • This application comprehensively considers the position information obtained by the current positioning and the position information of the terminal determined before the current positioning to determine whether the position obtained by the previous positioning is more accurate, or whether the position of the terminal determined before the current positioning is more accurate, rather than the current Directly using the position obtained by the current positioning as the position of the terminal, greatly reducing the situation of being determined as the position of the terminal when the position error obtained by the current positioning is relatively large, and improving the accuracy of determining the position of the terminal.
  • Figure 1 is the system schematic diagram of OTDOA positioning mode
  • FIG. 2 is a diagram of an application scenario provided by an embodiment of this application.
  • FIG. 3 is a flowchart 1 of a method for determining a location of a terminal provided by an embodiment of the present application
  • FIG. 4 is a flowchart 2 of a method for determining a terminal location provided by an embodiment of this application;
  • FIG. 5 is a flowchart 3 of a method for determining a terminal location provided by an embodiment of this application.
  • FIG. 6 is a schematic structural diagram of a positioning device provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a terminal provided by an embodiment of the present application.
  • At least one refers to one or more, and “multiple” refers to two or more.
  • “And/or” describes the relationship of the related objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist at the same time, B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the related objects before and after are a “or” relationship.
  • “At least one of the following” or a similar expression refers to any combination of these items, including any combination of a single item or a plurality of items.
  • At least one item (a) in a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be a single or multiple .
  • the terms "first”, “second”, etc. are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence.
  • GPS positioning The position of the GPS receiver is determined by multiple satellites with known positions.
  • the GPS receiver is located inside the terminal, so as to locate the position of the terminal.
  • the following uses four satellites as an example to illustrate a positioning principle of GPS: to obtain the distance d1, d2, d3, and d4 from the GPS receiver to the four satellites, based on the positions P1, P2, P3, P4, and d1 of the four satellites , D2, d3, d4, solve, get the position of the GPS receiver.
  • the positions P1, P2, P3 and P4 of the four satellites are broadcast to the GPS receiver by the number of four satellites; the method of obtaining the distances d1, d2, d3 and d4 from the GPS receiver to the four satellites is as follows: Because the GPS satellites will broadcast Your own location, then when sending the location information, it will also be appended with the timestamp when the data packet was sent. After the GPS receiver receives the data packet, use the current time (the current time is determined by the GPS receiver itself) minus The time on the timestamp is the time it takes for the data packet to be transmitted in the air. The transmission time of the data packet in the air, then multiplied by the transmission speed, is the distance the data packet is transmitted in the air, that is, the satellite to the GPS receiver. Away.
  • Network positioning The method of network positioning mainly uses the information of WIFI and cell, and calculates the location information of the terminal through triangulation positioning method or fingerprint positioning method.
  • the UTDOA positioning method sends upstream positioning signals (such as sounding reference signals (SRS, etc.)) through user equipment (user equipment, referred to as UE), and performs uplink signal transmission on the evolved base station (eNB) side.
  • the time of arrival is estimated to obtain the distance between the eNB and the UE.
  • the distance between multiple eNBs and the UE is obtained, and the relative coordinate position of the UE relative to the eNB is calculated by an algorithm such as trilateration.
  • the absolute position of the UE can be obtained.
  • Figure 1 is the system principle diagram of OTDOA positioning mode.
  • the principle of the OTDOA positioning method is that when there are three or more base stations in the system, the location of the UE can be determined according to the difference in the arrival time of downlink transmission signals of different base stations.
  • the downlink transmission signal may be a positioning reference signal or a synchronization signal. Knowing from the definition of hyperbola, the point where the distance between two fixed points is a constant value constitutes a hyperbola. As shown in FIG. 1, there are base station 0, base station 1 and base station 2 in the system. Assuming that the black entity in FIG. 1 indicates the position of the UE, the difference between the distance between the UE and base station 0 and base station 1 is d1-d0, forming a hyperbola.
  • the difference d2-d1 between the distance to the base station 1 and the base station 2 forms another hyperbola, and the intersection point of the two hyperbola is the position of the UE.
  • the determined UE location is more accurate.
  • OTDOA positioning is a network-assisted UE positioning technology.
  • an enhanced service mobile positioning center (enhanced serving mobile positioning (e-SMLC) for short) specifies positioning signals for base stations and mobile stations (positioning reference signal) , Referred to as PRS), the base station sends PRS downlink, the mobile station receives the PRS from multiple base stations and identifies the location of the first path of each PRS, you can get the PRS arrival time difference between different base stations, and Report it to e-SMLC.
  • e-SMLC can map the distance difference between the mobile station and different base stations through the received PRS arrival time difference. Through the above-mentioned hyperbolic model mathematical calculation, e-SMLC can get the accurate position of the mobile station.
  • network positioning is not limited to the above two methods.
  • FIG. 2 is an application scenario diagram provided by an embodiment of the present application.
  • the terminal 11 has a GPS receiver 12, and the GPS receiver 12 interacts with the satellite 13 to locate the terminal.
  • the terminal 11 interacts with the base station 14 and can also locate the location of the terminal.
  • FIG. 3 is a flowchart 1 of a method for determining a terminal location provided by an embodiment of the present application.
  • the execution subject of this embodiment may be the terminal in FIG. 2; referring to FIG. 3, the method of this embodiment includes:
  • Step S201 Position the terminal to obtain first position information, where the first position information includes the first position obtained by the positioning.
  • the positioning functions in various modes of the terminal in this embodiment are all turned on; wherein, the positioning function in one mode corresponds to one positioning mode.
  • the positioning function of one mode of the terminal is the GPS positioning function
  • the positioning function of the other mode is the network positioning function
  • the GPS positioning function and the network positioning function of the terminal are both turned on; among them, the GPS positioning function corresponds to
  • the positioning method is GPS positioning
  • the corresponding positioning method of the network positioning function is network positioning.
  • the terminal uses various positioning functions to perform positioning.
  • the current terminal positions itself to obtain first position information
  • the first position information includes the first position of the terminal obtained by current positioning.
  • the first position information further includes: a first time to locate the first position and/or a first accuracy of the first position.
  • the first position may include a longitude value and a latitude value
  • the unit of the first precision may be m
  • the first time to locate the first position may be a time stamp included in the first position information.
  • the method for acquiring the accuracy of the position is a method in the prior art, and will not be repeated here.
  • the current way in which the terminal positions itself may be any one of various positioning modes that the terminal has. If various positioning methods of the terminal include GPS positioning and network positioning, the terminal positions itself at the current moment, and the way to obtain the first position information may be GPS positioning or network positioning.
  • positioning the terminal to obtain the first position information may also be referred to as monitoring the position of the terminal to obtain the first position information.
  • Step S202 If the first location is different from the second location that was located last time, then determine the current location of the terminal according to the first location information and the second location information.
  • the second location information is obtained by positioning the terminal.
  • the position information corresponding to the three positions, the third position is the position of the terminal determined before the terminal obtains the first position.
  • the terminal determines that the first position is the same as the second position located last time, it means that the position of the terminal has not changed, and the process of determining the position of the terminal is not started.
  • the terminal determines that the first position is different from the second position that was located last time, it means that the position of the terminal may have changed.
  • the last positioning is the most recent positioning before the current positioning, that is, the last positioning and the current positioning are two adjacent positionings.
  • the last positioning method may be the same as the current positioning method, or may be different.
  • the terminal in the initialization phase, the terminal obtains N initial position information corresponding to the last positioning under the N positioning methods, and the initial position information corresponds to the positioning method in one-to-one correspondence; each time included in each initial position information is acquired Stamp, the timestamp included in the initial position information includes the time of the last positioning under the corresponding positioning mode; the positioning mode corresponding to the latest timestamp included in each timestamp is determined as the target positioning mode, and the target positioning mode is the latest positioning The position included in the corresponding initial position information is determined as the position of the terminal determined in the initial stage.
  • various positioning methods of the terminal include GPS positioning and network positioning.
  • the terminal acquires the first initial position information corresponding to the most recent GPS positioning and the second initial position information corresponding to the network positioning; acquiring the first time stamp included in the first initial position information and the second included in the second initial position information Timestamp, if the time included in the first timestamp minus the time included in the second timestamp is less than 0, network positioning is the target positioning method, and the position included in the second initial position information is determined to be the position of the terminal determined in the initial stage If the time included in the first time stamp minus the time included in the second time stamp is greater than 0, GPS positioning is the target positioning mode, and the location included in the first initial location information is determined to be the location of the terminal determined in the initial stage.
  • the terminal After obtaining a position for each subsequent positioning, the terminal will re-determine the position of the terminal once and replace the position of the newly determined terminal with the position of the previously determined terminal and store it in the terminal. It can be understood that, since the second position obtained from the previous positioning is not necessarily accurate, the second position is not necessarily the position of the terminal determined after the terminal obtains the second position and before the first position.
  • the position of the terminal determined after the second position and before the first position is obtained is referred to as a third position in this embodiment. That is to say, the second position in this embodiment may be the same as the third position, or may be different.
  • the terminal or the cloud will not store the location of the terminal determined in the initialization phase. Therefore, after obtaining the first location, it is necessary to determine whether the third location is stored in the terminal or the cloud.
  • a third location is stored in the terminal or in the cloud, it means that the terminal can obtain the third location, and the terminal determines the current location of the terminal based on the first location information and the second location information; where the second location information is The terminal locates the position information corresponding to the third position, and the second position information includes the third position.
  • the second position information further includes: a second time to locate the third position and/or a second accuracy of the third position. among them.
  • the third position may include a longitude value and a latitude value, the unit of the second precision may be m, and the second time to locate the third position may be the time in the time stamp included in the second position information.
  • determining the current location of the terminal according to the first location information and the second location information includes:
  • the current location of the terminal is determined from the first location and the third location.
  • the time to locate the first position and the third position and the accuracy of the first position and the third position are comprehensively considered to determine whether the first position is more accurate or the third position (the terminal determined before the first position is located) Location) is more accurate, thereby improving the accuracy of the determined terminal location.
  • the current position of the terminal is determined as the first position, and the determined current position of the terminal is replaced with the third position and stored in the terminal or the cloud. If the third position is more accurate, then It is determined that the current position of the terminal is the third position, that is, the position of the terminal is not updated, which also indicates that the first position that is located at the current moment differs greatly from the actual position of the terminal, and the first position is not available.
  • the first position information further includes a first way to locate the first position
  • the second position information further includes a second way to locate the third position; then according to the first time, the first position At two times, the first precision and the second precision, the current location of the terminal is determined from the first location and the third location, including:
  • the current location of the terminal is determined from the first location and the third location.
  • the accuracy of the first position and the third position are comprehensively considered to determine the position of the terminal, and the method of positioning the first position and the third position is also considered. The accuracy of the determined terminal position is further improved.
  • the terminal determines that the first location is the current location of the terminal.
  • the terminal or the location determined in the initialization stage will not be stored in the terminal or the cloud. If the terminal cannot obtain the third location, it means that the current positioning is the first positioning after initialization according to the positioning method in this embodiment. If the location of the terminal determined in the initialization phase is not stored in the terminal or in the cloud, the first location is directly determined to be the current location of the terminal.
  • the determined current location of the terminal may be displayed to the user.
  • the position information obtained by the current positioning and the position information of the terminal determined before the current positioning are comprehensively considered to determine whether the position obtained by the previous positioning is more accurate, or whether the position of the terminal determined before the current positioning is more accurate, rather than Directly using the position obtained by the current positioning as the position of the terminal greatly reduces the situation of being determined as the position of the terminal when the position error obtained by the current positioning is relatively large, and improves the accuracy of the determined position of the terminal.
  • the positioning method of the present application can be used in various applications that require positioning. Since the method of the present application locates the terminal more accurately, the terminal can accurately predict the distance between the current position of the terminal and the weak signal or black cell, or can accurately predict the time to reach the weak signal or black cell, and determine The location of the terminal and the predicted data are sent to the corresponding third-party application, so that the third-party application can do the work in advance to enable the terminal to provide services before entering the weak signal area, such as enabling the third-party application to enter the weak signal area Beforehand, buffer audio and video data in advance to prevent the audio and video from freezing when users watch videos on the terminal.
  • the following describes the process of "determining the current location of the terminal based on the first location information and the second location information" using a specific embodiment.
  • FIG. 4 is a flowchart 2 of a method for determining a terminal location provided by an embodiment of the present application. Referring to FIG. 4, the method in this embodiment includes:
  • Step S301 Obtain the time difference between the first time when the first position is located and the second time when the third position is located;
  • the first time to locate the first position is subtracted from the second time to locate the third position to obtain the time difference.
  • Step S302 Determine a target time score according to the first correspondence and the time difference; the first correspondence includes a plurality of preset time difference ranges, and a time score corresponding to each preset time difference range;
  • determining the target time score includes:
  • the time value corresponding to the target preset time difference range is the target time score.
  • the first correspondence may include the contents shown in Table 1 or Table 2:
  • t 0 may be any of -5s to -1s
  • t 1 may be 0s
  • t 2 may be any of 1s to 5s.
  • the first correspondence is not limited to the contents in Table 1 or Table 2, and Table 1 or Table 2 is just a form of the first correspondence.
  • the number of preset time difference ranges may be less than 4, or greater than 4, the values of t 0 , t 1 , and t 2 may change, the time score may change, and the time weight may also change.
  • the general trend to be followed is: the greater the time difference included in the preset time difference range, the higher the time score. This is because the greater the time difference included in the preset time difference range, it means that the first position is newer and the first position is determined as The more reasonable the location of the terminal.
  • the obtained time difference is 2s
  • t 0 is -3s
  • t 1 is 0s
  • t 2 may be 3s
  • Multiple preset time difference ranges are (- ⁇ , -3s], (-3s, 0s], (0s, 3s), and (3s, + ⁇ )
  • 2s is in the preset time difference range (0s, 3s)
  • preset The time difference range (0s, 3s) is the target preset time difference range
  • the time score corresponding to the preset time difference range (0s, 3s] is 0.3, which is the target time score.
  • Step S303 Acquire a difference in accuracy between the first accuracy at the first position and the second accuracy at the third position;
  • the first accuracy of the first position is subtracted from the second accuracy of positioning the third position to obtain the difference in accuracy.
  • Step S304 Determine a target accuracy score based on the second correspondence and the accuracy difference; the second correspondence includes multiple preset accuracy difference ranges and the accuracy score corresponding to each preset accuracy difference range;
  • determining the target accuracy score according to the second correspondence and the difference in accuracy includes:
  • the precision value corresponding to the target preset precision difference range is the target precision score.
  • the second corresponding relationship may include the contents shown in Table 3 or Table 4:
  • a 0 may be 20 m
  • a 1 may be 0 m.
  • the second correspondence is not limited to the contents in Table 3 or Table 4, and Table 3 or Table 4 is just a form of the second correspondence.
  • the number of preset precision difference ranges may be less than 3, or greater than 3, the values of a 0 and a 1 may change, the precision score corresponding to the preset precision may change, and the precision weight may also change.
  • the general trend to be followed is: the greater the accuracy difference included in the preset accuracy difference range, the lower the accuracy score. This is because the greater accuracy difference included in the preset accuracy difference range indicates that the accuracy of the first position is lower, The more unreasonable it is to determine the first position as the position of the terminal. It is understandable that the larger the accuracy value, the lower the accuracy, and the smaller the accuracy value, the higher the accuracy.
  • the resulting difference in accuracy is -5 m, a 0 is any of 20 m, and a 1 is 0 m, multiple pre- Set the accuracy difference range as (20m, + ⁇ ), (0m, 20m) and (- ⁇ , 0m), -5m is in the preset time difference range (- ⁇ , 0m), and the preset accuracy difference range (- ⁇ , 0m) ] Is the target preset accuracy difference range, and the accuracy score corresponding to the preset accuracy difference range (- ⁇ , 0m] is 0.55, which is the target accuracy score.
  • Step S305 Determine the judgment score according to the target time score and the target precision score
  • the determination score is determined, including:
  • the judgment score is obtained.
  • the decision score S can be obtained by the following formula:
  • SA can be the target time score
  • ST can be the target accuracy score
  • Step S306 Determine the current location of the terminal from the first location and the third location according to the decision score and the preset threshold.
  • determining the current location of the terminal from the first location and the third location according to the decision score and the preset threshold includes:
  • the first location is determined to be the current location of the terminal; if the decision score is less than the preset threshold, the third location is determined to be the current location of the terminal.
  • the preset threshold can be 0.3.
  • the decision score is greater than the preset threshold, it means that the decision score is higher, which may be caused by the time of the first position is very new, or it may be caused by the high accuracy of the first position, or it may be the time of the first position Caused by the newer position and the higher accuracy of the first position, that is, after comprehensively considering the degree of the newness of the first position and the third position in time and the degree of high accuracy, the first position is determined as the current position of the terminal The location is more reasonable.
  • the decision score is less than the preset threshold, it means that the decision score is low, which may be caused by the time of the first position is very old, or it may be caused by the low accuracy of the first position, or it may be the time of the first position
  • the upper position is lower and the accuracy of the first position is lower, that is, after comprehensively considering the new degree of time of the first position and the third position and the degree of high accuracy, the third position is determined as the current position of the terminal More reasonable.
  • This embodiment implements comprehensive consideration of the time and accuracy of the first position obtained by the current positioning and the time and accuracy of the third position of the terminal determined before positioning to the first position, and determining the first position from the time and accuracy is more accurate , Or the purpose of the third position being more accurate, thereby improving the accuracy of determining the position of the terminal.
  • FIG. 5 is a flowchart 3 of a method for determining a location of a terminal provided by an embodiment of the present application. Referring to FIG. 5, the method in this embodiment includes:
  • Step S401 Obtain the time difference between the first time when the first position is located and the second time when the third position is located;
  • step S301 in the embodiment shown in FIG. 4, details are not repeated here.
  • Step S402 Determine a target time score based on the first correspondence and the time difference; the first correspondence includes a plurality of preset time difference ranges, and a time score corresponding to each preset time difference range;
  • step S302 in the embodiment shown in FIG. 4, details are not repeated here.
  • Step S403 Acquire a difference in accuracy between the first accuracy at the first position and the second accuracy at the third position;
  • step S303 in the embodiment shown in FIG. 4, details are not repeated here.
  • Step S404 Determine a target accuracy score based on the second correspondence and the accuracy difference; the second correspondence includes multiple preset accuracy difference ranges and the accuracy score corresponding to each preset accuracy difference range;
  • step S304 in the embodiment shown in FIG. 4, details are not repeated here.
  • Step S405 Determine the judgment score according to the target time score and the target accuracy score
  • step S305 in the embodiment shown in FIG. 4, details are not repeated here.
  • Step S406 Determine the current location of the terminal from the first location and the third location according to the decision score, the preset threshold, the first mode, and the second mode.
  • determining the current location of the terminal from the first location and the third location according to the decision score, the preset threshold, the first mode, and the second mode includes:
  • the first location is determined to be the current location of the terminal
  • the third location is determined to be the current location of the terminal.
  • the first preset threshold may be 0.35, and the second preset threshold may be 0.3.
  • the decision score is greater than the first preset threshold, it means that the decision score is higher, which may be caused by the time of the first position is very new, or it may be caused by the high accuracy of the first position, or it may be the first Caused by the newer position in time and the higher precision of the first position, that is, after comprehensively considering the degree of newness of the first position and the third position in time and the degree of high accuracy, the first position is determined as the The current location of the terminal is reasonable.
  • the decision score is less than the second preset threshold, it means that the decision score is low, which may be caused by the time of the first position is very old, or it may be caused by the low accuracy of the first position, or it may be the first
  • the location is lower in time and the accuracy of the first location is lower, that is, after considering the newness of the first location and the third location in terms of time and the degree of high accuracy, the third location is determined as the current location of the terminal The location is more reasonable.
  • the method of locating the first position and the method of locating the third position may be considered at this time, because the positioning at different times under the same positioning method
  • the comparison is relatively reliable, so if the way to locate the first position is the same as the way to locate the third position, the first position is determined to be the current position of the terminal.
  • the manner of the third position is different, and it is determined that the third position is the current position of the terminal.
  • This embodiment implements a comprehensive consideration of the time, accuracy and positioning method of the first position obtained by the current positioning and the time, accuracy and positioning method of the third position of the terminal determined before positioning to the first position.
  • the purpose of determining whether the currently located first position is more accurate or the third position determined last time is more accurate, thereby further improving the accuracy of determining the terminal position.
  • FIG. 6 is a schematic structural diagram of a positioning apparatus provided by an embodiment of the present application.
  • the apparatus of this embodiment includes: a positioning module 61 and a determination module 62;
  • the positioning module 61 is configured to position the device to obtain first position information, where the first position information includes the first position obtained by the positioning;
  • the determining module 62 is configured to determine the current position of the device according to the first position information and the second position information if the first position is different from the second position located last time, the second The position information is the position information corresponding to when the device locates to obtain the third position, and the third position is the position of the device determined before the device obtains the first position.
  • the determination module 62 is further configured to determine the first position if the first position is different from the second position that was located last time and the device cannot obtain the third position The location is the current location of the device.
  • the first position information further includes: a first time to locate the first position and a first accuracy of the first position
  • the second position information further includes: to locate the third position The second time and the second accuracy of the third position
  • the determining module 62 is specifically configured to determine the location from the first position and the third position according to the first time, the second time, the first precision, and the second precision Describe the current location of the device.
  • the first position information further includes a first way to locate the first position
  • the second position information further includes a second way to locate the third position
  • the determining module 62 is specifically configured to: according to the first time, the second time, the first precision, the second precision, the first manner, and the second manner, from the The current position of the device is determined in the first position and the third position.
  • the device stores a first correspondence relationship and a second correspondence relationship
  • the first correspondence relationship includes a plurality of preset time difference ranges, and a time score corresponding to each preset time difference range
  • the second The correspondence relationship includes a plurality of preset precision difference ranges, and a precision score corresponding to each preset precision difference range
  • the determination module 62 is specifically configured to:
  • the current position of the device is determined from the first position and the third position according to the decision score and the preset threshold.
  • the determination module 62 is specifically used to:
  • the time score corresponding to the target preset time difference range is the target time score.
  • the determination module 62 is specifically used to:
  • the accuracy score corresponding to the target preset accuracy difference range is the target accuracy score.
  • the determination module 62 is specifically used to:
  • the decision score is obtained.
  • the determination module 62 is specifically used to:
  • the decision score is greater than or equal to the preset threshold, it is determined that the first location is the current location of the terminal;
  • the decision score is less than the preset threshold, it is determined that the third location is the current location of the terminal.
  • the device stores a first correspondence relationship and a second correspondence relationship
  • the first correspondence relationship includes a plurality of preset time difference ranges, and a time score corresponding to each preset time difference range
  • the second The correspondence relationship includes a plurality of preset precision difference ranges, and a precision score corresponding to each preset precision difference range
  • the determination module 62 is specifically configured to:
  • the current position of the device is determined from the first position and the third position according to the decision score, the preset threshold, the first manner, and the second manner.
  • the determination module 62 is specifically used to:
  • the decision score is greater than or equal to the second preset threshold and less than or equal to the first preset threshold, and the first manner and the second manner are the same, it is determined that the first position is the current location of the terminal s position;
  • the third location is determined to be the terminal Current location.
  • the device of this embodiment may be used to execute the technical solutions of the above method embodiments, and its implementation principles and technical effects are similar, and will not be repeated here.
  • the terminal in this embodiment includes: a processor 72, a memory 71, and a communication bus 73.
  • the communication bus 73 is used to connect the processor 71 and the memory 72.
  • the device 71 is coupled to the memory 72;
  • the memory 71 is used to store a computer program
  • the processor 72 is configured to call a computer program stored in the memory to implement the method in the foregoing method embodiment.
  • the computer program can also be stored in a memory outside the terminal.
  • the processor 72 may be a CPU, and the processor 72 may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • DSPs digital signal processors
  • ASICs application specific integrated circuits
  • FPGA field programmable gate arrays
  • the general-purpose processor may be a microprocessor or any conventional processor.
  • the memory 71 may include a read-only memory and a random access memory, and provide instructions and data to the processor 72.
  • the memory 71 may also include a non-volatile random access memory.
  • the memory 71 may also store device type information.
  • the memory 71 may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electronically Erasable programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (random access memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • Double data rate synchronous dynamic random access memory double data SDRAM, DDR SDRAM
  • enhanced SDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous connection dynamic random access memory
  • direct RAMbus direct RAMbus, DR, RAM
  • the bus 73 may also include a power bus, a control bus, and a status signal bus. However, for clarity, various buses are marked as buses 73 in the figure.
  • An embodiment of the present application provides a readable storage medium, including a program or an instruction.
  • the program or the instruction is run on a computer, the method in the above method embodiment is executed.
  • the above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination.
  • the above-described embodiments may be implemented in whole or in part in the form of computer program products.
  • the computer program product includes one or more computer instructions. When the computer program instructions are loaded or executed on a computer, all or part of the processes or functions described in this application are generated.
  • the computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server or data center Transmit to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that contains one or more collections of available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium.
  • the semiconductor medium may be a solid state drive (SSD).

Abstract

本申请提供一种定位的方法和装置,该方法包括:对终端进行定位,得到第一位置信息,该第一位置信息包括该定位得到的第一位置;若该第一位置与上次定位到的第二位置不相同,则根据该第一位置信息和第二位置信息,确定该终端当前的位置,该第二位置信息为该终端定位得到第三位置时所对应的位置信息,该第三位置为该终端在得到该第一位置前确定的该终端的位置。本申请中综合考虑当前的定位得到的位置信息和在当前定位之前确定的终端的位置信息,来确定前的定位得到的位置比较准确,还是当前定位之前确定的终端的位置比较准确,大大降低了在当前定位得到的位置误差比较大的情况下还被确定为终端的位置的情况,提高了确定的终端位置的准确度。

Description

定位的方法和装置 技术领域
本实施例涉及到终端技术领域,尤其涉及一种定位的方法和装置。
背景技术
如今基于位置服务的应用已经成为当前应用服务开发的趋势,定位功能也已成为所有移动设备的标配。当前移动设备的定位方法主要有全球定位系统(global positioning system,简称GPS)定位和网络定位两种。
目前确定移动设备的位置的方法为直接将当前定位到的位置确定为移动设备的位置;但是由于卫星轨道的变化、气候因素的变化,有时会到导致GPS定位到的移动设备的位置与移动设备的实际位置之间存在较大的误差;此外,由于网络信号质量的变化,有时会导致网络定位到的移动设备的位置与移动设备的实际位置之间存在较大的误差。因此,直接将当前定位到的位置确定为移动设备的位置存在确定的位置并不准确的问题,从而影响了用户对基于位置服务的应用的使用。
因此,如何提高确定的移动设备的位置的准确度,是急需解决的技术问题。
发明内容
本申请提供一种定位的方法和装置,以提高确定的移动设备的位置的准确度。
第一方面,本申请提供一种定位的方法,应用于终端,所述方法包括:
对终端进行定位,得到第一位置信息,所述第一位置信息包括所述定位得到的第一位置;
若所述第一位置与上次定位到的第二位置不相同,则根据所述第一位置信息和第二位置信息,确定所述终端当前的位置,所述第二位置信息为所述终端定位得到第三位置时所对应的位置信息,所述第三位置为所述终端在得到所述第一位置前确定的所述终端的位置。
该方案中综合考虑当前的定位得到的位置信息和在当前定位之前确定的终端的位置信息,来确定前的定位得到的位置比较准确,还是当前定位之前确定的终端的位置比较准确,而不是直接将当前的定位得到的位置作为终端的位置,从而提高了确定的终端位置的准确度。
在一种可能的设计中,若所述第一位置与上次定位到的第二位置不相同且所述终端无法获取到所述第三位置时,则确定所述第一位置为该终端当前的位置。
所述终端无法获取到前定位之前确定的终端的位置时,就将当前定位到的位置确定为该终端当前的位置,由于当前定位到的位置时间比较新,在一定程度上保证了确定的终端位置的准确度。
其中,根据所述第一位置信息和第二位置信息,确定所述终端当前的位置,具有如下两种可能实现的方式。
在第一种可能的实现方式中,所述第一位置信息还包括:定位所述第一位置的第一时间和所述第一位置的第一精度,所述第二位置信息还包括:定位所述第三位置的第二时间和所述第三位置的第二精度;所述根据所述第一位置信息和第二位置信息,确定所述终端当前的位置,包括:
根据所述第一时间、所述第二时间、所述第一精度和所述第二精度,从所述第一位置和所述第三位置中确定所述终端当前的位置。
该方式中综合考虑定位第一位置与定位第三位置的时间,以及第一位置与第三位置的精度,来确定第一位置比较准确,还是第三位置(定位到第一位置前确定的终端的位置)比较准确,从而提高了确定的终端位置的准确度。
在第二种可能的实现方式中,所述第一位置信息还包括定位所述第一位置的第一方式,所述第二位置信息还包括定位所述第三位置的第二方式;所述根据所述第一时间、所述第二时间、所述第一精度和所述第二精度,从所述第一位置和所述第三位置中确定所述终端当前的位置,包括:
根据所述第一时间、所述第二时间、所述第一精度、所述第二精度、所述第一方式和所述第二方式,从所述第一位置和所述第三位置中确定所述终端当前的位置。
该方式中不仅综合考虑定位第一位置与定位第三位置的时间,以及第一位置与第三位置的精度,来确定终端的位置,还考虑了定位第一位置与定位第三位置的方式,进一步提高了确定的终端位置的准确度。
进一步地,所述终端存储有第一对应关系和第二对应关系,所述第一对应关系包括多个预设时间差范围,以及每个预设时间差范围对应的时间分值,所述第二对应关系包括多个预设精度差范围,以及每个预设精度差范围对应的精度分值。
对于第一种实现方式,所述根据所述第一时间、所述第二时间、所述第一精度和所述第二精度,从所述第一位置和所述第三位置中确定所述终端当前的位置,包括:
获取所述第一时间和所述第二时间的时间差;
根据所述第一对应关系、所述时间差,确定目标时间分值;
获取所述第一精度和所述第二精度的精度差;
根据所述第二对应关系、所述精度差,确定目标精度分值;
根据所述目标时间分值和目标精度分值,确定判决分值;
根据所述判决分值和预设阈值,从所述第一位置和所述第三位置中确定所述终端当前的位置。
其中,根据所述第一对应关系、所述时间差,确定所述目标时间分值,包括:
确定所述时间差所在的目标预设时间差范围;
确定所述第一对应关系中,所述目标预设时间差范围所对应的时间分值为所述目标时间分值。
其中,根据所述第二对应关系、所述精度差,确定所述目标精度分值,包括:
确定所述精度差所在的目标预设精度差范围;
确定所述第二对应关系中,所述目标预设精度差范围所对应的精度分值为所述目标精度分值。
其中,所述根据所述时间分值和精度分值,确定判决分值,包括:
获取所述目标时间分值与时间权重的第一乘积;
获取所述目标精度分值与精度权重的第二乘积;
根据所述第一乘积和所述第二乘积,得到所述判决分值。
其中,根据所述判决分值和预设阈值,从所述第一位置和所述第三位置中确定所述终端当前的位置,包括:
若所述判决分值大于或等于所述预设阈值,则确定所述第一位置为所述终端当前的位置;
若所述判决分值小于所述预设阈值,则确定所述第三位置为所述终端当前的位置。
对于第二种实现方式,所述根据所述第一时间、所述第二时间、所述第一精度、所述第二精度、所述第一方式和所述第二方式,从所述第一位置和所述第三位置中确定所述终端当前的位置,包括:
获取所述第一时间和所述第二时间的时间差;
根据所述第一对应关系、所述时间差,确定目标时间分值;
获取所述第一精度和所述第二精度的精度差;
根据所述第二对应关系、所述精度差,确定目标精度分值
根据所述目标时间分值和所述目标精度分值,确定判决分值;
根据所述判决分值、预设阈值、所述第一方式和所述第二方式,从所述第一位置和所述第三位置中确定所述终端当前的位置。
其中,所述根据所述判决分值、预设阈值、所述第一方式和所述第二方式,从所述第一位置和所述第三位置中确定所述终端当前的位置,包括:
若所述判决分值大于第一预设阈值,则确定所述第一位置为所述终端当前的位置;
若所述判决分值小于第二预设阈值,则确定所述第三位置为所述终端当前的位置;
若所述判决分值大于或等于第二预设阈值且小于或等于第一预设阈值,并且所述第一方式和所述第二方式相同,则确定所述第一位置为所述终端当前的位置;
若所述判决分值大于或等于第二预设阈值且小于或等于第一预设阈值,并且所述第一方式和所述第二方式不相同,则确定所述第三位置为所述终端当前的位置。
在第二种实现方式中与第一种实现方式相同的步骤参照第一种实现方式中的阐述。
第二方面,本申请实施例提供一种定位的装置,包括:
定位模块,用于对装置进行定位,得到第一位置信息,所述第一位置信息包括所述定位得到的第一位置;
确定模块,用于若所述第一位置与上次定位到的第二位置不相同,则根据所述第一位置信息和第二位置信息,确定所述装置当前的位置,所述第二位置信息为所述装置定位得到第三位置时所对应的位置信息,所述第三位置为所述装置在得到所述第一位置前确定的所述装置的位置。
在一种可能的设计中,所述确定模块,还用于若所述第一位置与上次定位到的第二位置不相同且所述装置无法获取到所述第三位置时,则确定所述第一位置为该装置当前的位置。
在一种可能的设计中,所述第一位置信息还包括:定位所述第一位置的第一时间和所述第一位置的第一精度,所述第二位置信息还包括:定位所述第三位置的第二时间和所述 第三位置的第二精度;
所述确定模块,具体用于:根据所述第一时间、所述第二时间、所述第一精度和所述第二精度,从所述第一位置和所述第三位置中确定所述装置当前的位置。
在一种可能的设计中,所述第一位置信息还包括定位所述第一位置的第一方式,所述第二位置信息还包括定位所述第三位置的第二方式;
所述确定模块,具体用于:根据所述第一时间、所述第二时间、所述第一精度、所述第二精度、所述第一方式和所述第二方式,从所述第一位置和所述第三位置中确定所述装置当前的位置。
在一种可能的设计中,所述装置存储有第一对应关系和第二对应关系,所述第一对应关系包括多个预设时间差范围,以及每个预设时间差范围对应的时间分值,所述第二对应关系包括多个预设精度差范围,以及每个预设精度差范围对应的精度分值;所述确定模块具体用于:
获取所述第一时间和所述第二时间的时间差;
根据所述第一对应关系、所述时间差,确定目标时间分值;
获取所述第一精度和所述第二精度的精度差;
根据所述第二对应关系、所述精度差,确定目标精度分值;
根据所述目标时间分值和目标精度分值,确定判决分值;
根据所述判决分值和预设阈值,从所述第一位置和所述第三位置中确定所述装置当前的位置。
在一种可能的设计中,所述确定模块具体用于:
确定所述时间差所在的目标预设时间差范围;
确定所述第一对应关系中,所述目标预设时间差范围所对应的时间分值为所述目标时间分值。
在一种可能的设计中,所述确定模块具体用于:
确定所述精度差所在的目标预设精度差范围;
确定所述第二对应关系中,所述目标预设精度差范围所对应的精度分值为所述目标精度分值。
在一种可能的设计中,所述确定模块具体用于:
获取所述目标时间分值与时间权重的第一乘积;
获取所述目标精度分值与精度权重的第二乘积;
根据所述第一乘积和所述第二乘积,得到所述判决分值。
在一种可能的设计中,所述确定模块具体用于:
若所述判决分值大于或等于所述预设阈值,则确定所述第一位置为所述终端当前的位置;
若所述判决分值小于所述预设阈值,则确定所述第三位置为所述终端当前的位置。
在一种可能的设计中,所述装置存储有第一对应关系和第二对应关系,所述第一对应关系包括多个预设时间差范围,以及每个预设时间差范围对应的时间分值,所述第二对应关系包括多个预设精度差范围,以及每个预设精度差范围对应的精度分值;所述确定模块具体用于:
获取所述第一时间和所述第二时间的时间差;
根据所述第一对应关系、所述时间差,确定目标时间分值;
获取所述第一精度和所述第二精度的精度差;
根据所述第二对应关系、所述精度差,确定目标精度分值;
根据所述目标时间分值和目标精度分值,确定判决分值;
根据所述判决分值、预设阈值,所述第一方式和所述第二方式,从所述第一位置和所述第三位置中确定所述装置当前的位置。
在一种可能的设计中,所述确定模块具体用于:
若所述判决分值大于第一预设阈值,则确定所述第一位置为所述终端当前的位置;
若所述判决分值小于第二预设阈值,则确定所述第三位置为所述终端当前的位置;
若所述判决分值大于或等于第二预设阈值且小于或等于第一预设阈值,并且所述第一方式和所述第二方式相同,则确定所述第一位置为所述终端当前的位置;
若所述判决分值大于或等于第二预设阈值且小于或等于第一预设阈值,并且所述第一方式和所述第二方式不相同,则确定所述第三位置为所述终端当前的位置。
第三方面,本实施例提供一种终端,包括处理器;
所述处理器用于与存储器耦合,读取并执行所述存储器中的指令,以实现第一方面以及第一方面任一可能的设计中所述的方法。
在一种可能的设计中,还包括所述存储器。
第四方面,本申请提供一种计算机存储介质,包括指令,当所述指令在计算机上运行时,使得所述计算机执行如第一方面以及第一方面任一可能的设计中所述的方法。
本申请中综合考虑当前的定位得到的位置信息和在当前定位之前确定的终端的位置信息,来确定前的定位得到的位置比较准确,还是当前定位之前确定的终端的位置比较准确,而不是目前的直接将当前的定位得到的位置作为终端的位置,大大降低了在当前定位得到的位置误差比较大的情况下还被确定为终端的位置的情况,提高了确定的终端位置的准确度。
附图说明
图1为OTDOA定位方式的系统原理图;
图2为本申请实施例提供的一种应用场景图;
图3为本申请实施例提供的确定终端位置的方法的流程图一;
图4为本申请实施例提供的确定终端位置的方法的流程图二;
图5为本申请实施例提供的确定终端位置的方法的流程图三;
图6为本申请实施例提供的定位的装置的结构示意图;
图7为本申请实施例提供的终端的结构示意图。
具体实施方式
本申请中,“至少一个”是指一个或者多个,“多个”是指两个或两个以上。“和/或”,描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B的情况,其中A,B可以是单数或者复数。字符“/”一般表 示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达,是指的这些项中的任意组合,包括单项(个)或复数项(个)的任意组合。例如,a,b,或c中的至少一项(个),可以表示:a,b,c,a-b,a-c,b-c,或a-b-c,其中a,b,c可以是单个,也可以是多个。本申请中术语“第一”、“第二”等是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。
首先对本申请涉及的技术名词进行相关的说明。
GPS定位:通过多颗已知位置的卫星来确定GPS接收器的位置,GPS接收器器位于终端内部,从而达到定位终端的位置。下面以四颗卫星为例,说明GPS的一种定位原理:获取GPS接收器到四颗卫星的距离d1、d2、d3、d4,根据四颗卫星的位置P1、P2、P3、P4,和d1、d2、d3、d4,求解,得到GPS接收器的位置。四颗卫星的位置P1、P2、P3、P4是四颗卫星号广播至GPS接收器的;GPS接收器到四颗卫星的距离d1、d2、d3、d4的获取方法如下:由于GPS卫星会广播自己的位置,那么在发送位置信息的同时,也会附加上该数据包发出时的时间戳,GPS接收器收到数据包后,用当前时间(当前时间当由GPS接收器自己来确定)减去时间戳上的时间,就是数据包在空中传输所用的时间了,数据包在空中的传输时间,那么乘上传输速度,就是数据包在空中传输的距离,也就是该卫星到GPS接收器的距离了。
网络定位:网络定位的方式主要利用WIFI和小区的信息,通过三角定位法或指纹定位法,计算出终端的位置信息。
下面对三角定位法对应的两种可能的定位方式的原理进行说明:一种是上行到达时间差(uplink time difference of arrival,简称UTDOA)定位方式,一种是可观察到达时间差(observed time difference of arrival,简称OTDOA)定位方式。
UTDOA定位方式通过用户设备(user equipment,简称UE,)发送上行的定位信号(如探测参考信号(sounding reference signal,简称SRS等),在演进型基站(evolved node,简称eNB)侧进行上行信号的到达时间估计,得到eNB与此UE的距离。从而,得到多个eNB与此UE的距离,通过三边法等算法计算得到UE的相对于eNB的相对坐标位置,网络根据eNB的实际位置,即可以得到UE的绝对位置。
图1为OTDOA定位方式的系统原理图。OTDOA定位方式的原理是,当系统中存在三个或以上基站时,可以根据不同基站下行传输信号的到达时间差确定UE的位置。此下行传输信号可以是定位参考信号,也可以是同步信号。由双曲线的定义知,到两个定点距离之差为恒定值的点构成一条双曲线。如图1所示,系统中存在基站0、基站1和基站2,假设图1中黑色实体部分表示UE的位置,UE到基站0和基站1距离之差为d1-d0构成一条双曲线,UE到基站1和基站2距离之差d2-d1构成另一条双曲线,两条双曲线的交点即为UE的位置。当系统中存在的基站数量越多时,确定的UE位置越精确。在LTE中,OTDOA定位作为一种网络辅助UE定位的技术,在网络侧,增强的服务移动定位中心(enhanced serving mobile location centre,简称e-SMLC)为基站和移动台指定定位信号(positioning reference signal,简称PRS)的发送和接收配置之后,基站下行发送PRS,移动台接收到来自多个基站的PRS后识别每个PRS的首达径位置,可以得到不同基站之间的PRS到达时间差,并将其上报至e-SMLC。e-SMLC通过接收到的PRS到达时间差可以映射出移动台与不同基站之间的距离差,通过上述的双曲线模型数学计算,e-SMLC就可以得到移动台的准确位置。
可以理解的是,网络定位并部限于上述两种方法。
图2为本申请实施例提供的一种应用场景图。
参见图2,终端11内具有GPS接收器12,GPS接收器12与卫星13之间交互,可定位到终端的位置。终端11与基站14交互,也可定位到终端的位置。
下面采用具体的实施例对确定终端位置的方法进行说明。
图3为本申请实施例提供的确定终端位置的方法的流程图一,本实施例的执行主体可为图2中的终端;参见图3,本实施例的方法包括:
步骤S201、对终端进行定位,得到第一位置信息,该第一位置信息包括所述定位得到的第一位置。
具体地,本实施例中的终端的各种方式的定位功能均处于开启状态;其中,一种方式的定位功能与一种定位方式相对应。比如,若终端的一种方式的定位功能为GPS定位功能,另一种方式的定位功能为网络定位功能,则该终端的GPS定位功能和网络定位功能均处于开启状态;其中,GPS定位功能对应的定位方式为GPS定位,网络定位功能对应的定位方式为网络定位。
可以理解的是,在终端的各种方式的定位功能均处于开启状态的情况下,终端会采用各种方式的定位功能进行定位。
在步骤S201中,当前终端对自身进行定位,得到第一位置信息,第一位置信息包括当前定位得到的该终端的第一位置。进一步地,第一位置信息还包括:定位该第一位置的第一时间和/或第一位置的第一精度。其中,第一位置可包括经度值和纬度值,第一精度的单位可为m,定位该第一位置的第一时间可为第一位置信息包括的时间戳。位置的精度的获取方法为现有技术中的方法,此处不再赘述。
可以理解的是,终端在当前对自身定位的方式可能为终端具有的各种定位方式中的任意一种方式。若该终端的各种定位方式包括GPS定位和为网络定位,则终端在当前时刻对自身定位,得到第一位置信息的方式可能为GPS定位,也可能为网路定位。
其中,对终端定位,得到第一位置信息,也可称为对终端的位置进行监听,得到第一位置信息。
步骤S202、若该第一位置与上次定位到的第二位置不相同,则根据第一位置信息和第二位置信息,确定该终端当前的位置,该第二位置信息为该终端定位得到第三位置时所对应的位置信息,该第三位置为该终端在得到该第一位置前确定的该终端的位置。
具体地,若该终端确定该第一位置与上次定位到的第二位置相同,则说明终端的位置没有发生变化,则不开启确定终端的位置的过程。
若该终端确定该第一位置与上次定位到的第二位置不相同,说明终端的位置可能发生了变化。其中,上次定位为当前的定位之前的最近一次定位,即上次定位和当前的定位为相邻的两次定位。上次定位的方式和当前的定位的方式可能相同,也可能不相同。
若终端具有N种定位方式,在初始化阶段,终端获取N种定位方式下最近一次定位对应的N个初始位置信息,初始位置信息和定位方式一一对应;获取各初始位置信息中包括的各时间戳,初始位置信息中包括的时间戳包括相应定位方式下最近一次定位的时间;将各时间戳中包括的时间最新的时间戳对应的定位方式确定为目标定位方式,该目标定位方式最近一次定位对应的初始位置信息所包括的位置确定为初始阶段确定的终端的位置。
比如,该终端的各种定位方式包括GPS定位和网络定位。在初始化阶段,终端获取最近一次GPS定位对应的第一初始位置信息和网络定位对应的第二初始位置信息;获取第一初始位置信息包括的第一时间戳和第二初始位置信包括的第二时间戳,若第一时间戳包括的时间减去第二时间戳包括的时间小于0,则网络定位为目标定位方式,确定第二初始位置信息中包括的位置确定为初始阶段确定的终端的位置,若第一时间戳包括的时间减去第二时间戳包括的时间大于0,则GPS定位为目标定位方式,确定第一初始位置信息中包括的位置确定为初始阶段确定的终端的位置。
在后续每次定位得到一个位置后,终端均会重新确定一次终端的位置并将新确定的终端的位置替换上一次确定的终端的位置后存储在终端内。可以理解的是,由于上次定位得到的第二位置并不一定准确,因此,第二位置并不一定是终端在得到第二位置后、得到第一位置前确定的终端的位置,终端在得到第二位置后、得到第一位置前确定的终端的位置在本实施例中称为第三位置。也就是说,本实施例中的第二位置可能与第三位置相同,也可能不相同。
若在初始化阶段,初始化失败,则终端或云端内不会存储有初始化阶段确定的终端的位置,因此,在得到第一位置后,需要判断终端或者云端内是否存储有第三位置。
若终端内或云端存储有第三位置,则说明终端能够获取到第三位置,则终端根据该第一位置信息、第二位置信息,确定该终端当前的位置;其中,该第二位置信息为该终端定位得到该第三位置时所对应的位置信息,且该第二位置信息包括第三位置。其中,第二位置信息还包括:定位该第三位置的第二时间和/或第三位置的第二精度。其中。第三位置可包括经度值和纬度值,第二精度的单位可为m,定位该第三位置的第二时间可为第二位置信息包括的时间戳中的时间。
在一种方式中,根据第一位置信息和第二位置信息,确定终端当前的位置,包括:
根据该第一时间、该第二时间、该第一精度和该第二精度,从第一位置和第三位置中确定该终端当前的位置。
该方式中综合考虑定位第一位置与定位第三位置的时间,以及第一位置与第三位置的精度,来确定第一位置比较准确,还是第三位置(定位到第一位置前确定的终端的位置)比较准确,从而提高了确定的终端位置的准确度。
可以理解的是,若第一位置比较准确,则确定终端当前的位置为第一位置,并将确定的终端当前的位置替换第三位置并存储在终端或云端,若第三位置比较准确,则确定终端当前的位置为第三位置,即并不更新终端的位置,也说明了当前时刻的定位到的第一位置与终端的实际位置相差较大,第一位置不可用。
另一种方式中,若该第一位置信息还包括定位该第一位置的第一方式,该第二位置信息还包括定位该第三位置的第二方式;则根据该第一时间、该第二时间、该第一精度和该第二精度,从第一位置和第三位置中确定该终端当前的位置,包括:
根据该第一时间、该第二时间、该第一精度、该第二精度、该第一方式和该第二方式,从第一位置和第三位置中确定该终端当前的位置。
该方式中不仅综合考虑定位第一位置与定位第三位置的时间,以及第一位置与第三位置的精度,来确定终端的位置,还考虑了定位第一位置与定位第三位置的方式,进一步提高了确定的终端位置的准确度。
可以理解的是,若终端内或者云端未存储有第三位置,则说明终端无法获取到第三位置,则终端确定该第一位置为该终端当前的位置。
由于若初始化失败,终端内或者云端不会存储有初始化阶段确定的终端的位置,若终端无法获取到第三位置,说明当前的定位为初始化后首次按照本实施例中的定位方法进行定位,由于终端内或者云端没有存储有初始化阶段确定的终端的位置,则直接确定该第一位置为该终端当前的位置。
进一步地,在步骤S202中确定完该终端当前的位置后,可向用户显示确定的该终端当前的位置。
本实施例中综合考虑当前的定位得到的位置信息和在当前定位之前确定的终端的位置信息,来确定前的定位得到的位置比较准确,还是当前定位之前确定的终端的位置比较准确,而不是直接将当前的定位得到的位置作为终端的位置,大大降低了在当前定位得到的位置误差比较大的情况下还被确定为终端的位置的情况,提高了确定的终端位置的准确度。
本申请的定位方法可在各种需要定位的应用中使用。由于本申请的方法对终端的定位比较准确,那么终端可以准确的预测终端的当前位置与弱信号或黑小区之间的距离,或者能够准确的预测到达弱信号或黑小区的时间,并将确定的终端的位置和预测的数据发送至相应第三方应用,使得第三方应用能在进入弱信号区域前,提前做好能够使得终端正常提供服务的工作,比如使得第三方应用能在进入弱信号区域前,提前缓存音视频数据,防止用户在终端观看视频时音视频卡顿现象的发生。
下面采用具体的实施例对“根据该第一位置信息和第二位置信息,确定该终端当前的位置”的过程进行说明。
首先对“根据该第一位置信息和第二位置信息,确定该终端当前的位置”的一种实现方式进行说明。图4为本申请实施例提供的确定终端位置的方法的流程图二,参见图4,本实施例的方法包括:
步骤S301、获取定位第一位置的第一时间和定位第三位置的第二时间的时间差;
具体地,将定位第一位置的第一时间减去定位第三位置的第二时间,得到该时间差。
步骤S302、根据第一对应关系、该时间差,确定目标时间分值;该第一对应关系包括多个预设时间差范围,以及每个预设时间差范围对应的时间分值;
具体地,根据第一对应关系、该时间差,确定目标时间分值,包括:
确定该时间差所在的目标预设时间差范围;
确定该第一对应关系中,该目标预设时间差范围所对应的时间值为目标时间分值。
其中,第一对应关系可包括表1或表2中所示的内容:
表1
Figure PCTCN2018117379-appb-000001
Figure PCTCN2018117379-appb-000002
表2
Figure PCTCN2018117379-appb-000003
其中,t 0可为-5s~-1s中的任一,t 1可为0s,t 2可为1s~5s中的任一。
可以理解的是,第一对应关系并不受限于表1或表2中的内容,表1或表2只是第一对应关系的一种形式。如预设时间差范围的个数可小于4个,或者大于4个,t 0、t 1、t 2的数值可变化,时间分值可变化、时间权重也可以变化。需要遵循的总的趋势为:预设时间差范围包括的时间差越大,时间分值越高,这是因为预设时间差范围包括的时间差越大,说明第一位置越新,将第一位置确定为终端的位置就越合理。
示例性地,若将定位第一位置的第一时间减去定位第三位置的第二时间,得到的该时间差为2s,t 0为-3s,t 1为0s,t 2可为3s,则多个预设时间差范围为(-∞,-3s]、(-3s,0s]、(0s,3s]和(3s,+∞],2s位于预设时间差范围(0s,3s]中,预设时间差范围(0s,3s]为目标预设时间差范围,预设时间差范围(0s,3s]对应的时间分值0.3,即为目标时间分值。
步骤S303、获取第一位置的第一精度和第三位置的第二精度的精度差;
具体地,将第一位置的第一精度减去定位第三位置的第二精度,得到该精度差。
步骤S304、根据第二对应关系、该精度差,确定目标精度分值;该第二对应关系包括多个预设精度差范围,以及每个预设精度差范围对应的精度分值;
具体地,根据该第二对应关系、精度差,确定目标精度分值,包括:
确定该精度差所在的目标预设精度差范围;
确定该第二对应关系中,目标预设精度差范围所对应的精度值为该目标精度分值。
其中,第二对应关系可包括表3或表4中所示的内容:
表3
预设时间差范围 精度分值ST
(-∞,t 0] 0.1
(t 0,t 1] 0.35
(t 1,t 2] 0.55
表4
预设精度差范围 精度分值ST 精度权重
(a 0,+∞] 0.1 0.4
(a 1,a 0] 0.35 0.4
(-∞,a 1] 0.55 0.4
其中,a 0可为20m,a 1可为0m。
可以理解的是,第二对应关系并不受限于表3或表4中的内容,表3或表4只是第二对应关系的一种形式。如预设精度差范围的个数可小于3个,或者大于3个,a 0、a 1的数值可变化,预设精度对应的精度分值可变化、精度权重也可以变化。需要遵循的总的趋势为:预设精度差范围包括的精度差越大,精度分值越低,这是因为预设精度差范围包括的精度差越大,说明第一位置的精度越低,将第一位置确定为终端的位置就越不合理。可以理解的是,精度值越大,精度越低,精度值越小,精度越高。
示例性地,若将第一位置的第一精度减去第三位置的第二精度,得到的该精度差为-5m,a 0为20m中的任一,a 1为0m,则多个预设精度差范围为(20m,+∞]、(0m,20m]和(-∞,0m],-5m位于预设时间差范围(-∞,0m]中,预设精度差范围(-∞,0m]为目标预设精度差范围,预设精度差范围(-∞,0m]对应的精度分值0.55,即为目标精度分值。
步骤S305、根据目标时间分值和目标精度分值,确定判决分值;
具体地,根据目标时间分值和目标精度分值,确定判决分值,包括:
获取目标时间分值与时间权重的第一乘积;
获取目标精度分值与精度权重的第二乘积;
根据该第一乘积和该第二乘积,得到该判决分值。
比如,可通过如下公式得到该判决分值S:
S=SA×λ+ST×α
其中,SA可为目标时间分值,ST可为目标精度分值。
示例性地,若目标时间分值为0.3,时间权重为0.65,目标精度分值为0.55,精度权重为0.35,则判决分值S=0.3×0.65+0.55×0.35=0.3875。
步骤S306、根据该判决分值和预设阈值,从第一位置和第三位置中确定该终端当前的位置。
具体地,根据判决分值和预设阈值,从第一位置和第三位置中确定该终端当前的位置,包括:
若该判决分值大于或等于预设阈值,则确定该第一位置为该终端当前的位置;若该判决分值小于预设阈值,则确定该第三位置为该终端当前的位置。
其中,预设阈值可为0.3。
若该判决分值大于预设阈值,说明判决分值较高,可能是由于第一位置时间上很新造成的,也可能是第一位置的精度很高造成的,还可能是第一位置时间上较新造成的以及第一位置的精度较高造成的,即综合考虑第一位置和第三位置在时间上新的程度以及在精度上高的程度后,将第一位置确定为该终端当前的位置比较合理。
若该判决分值小于预设阈值,说明判决分值较低,可能是由于第一位置时间上很旧造成的,也可能是第一位置的精度很低造成的,还可能是第一位置时间上较低以及第一位置的精度较低造成的,即综合考虑第一位置和第三位置在时间上新的程度以及在精度上高的程度后,将第三位置确定为该终端当前的位置比较合理。
本实施例实现了综合考虑当前的定位得到的第一位置的时间、精度和在定位到第一位置之前确定的终端的第三位置的时间、精度,从时间和精度上来确定第一位置比较准确, 还是第三位置比较准确的目的,从而提高了确定终端位置的准确度。
其次对“根据该第一位置信息和第二位置信息,确定该终端当前的位置”的另一种实现方式进行说明。图5为本申请实施例提供的确定终端位置的方法的流程图三,参见图5,本实施例的方法包括:
步骤S401、获取定位第一位置的第一时间和定位第三位置的第二时间的时间差;
具体地,参照图4所示的实施例中步骤S301的阐述,此处不再赘述。
步骤S402、根据第一对应关系、该时间差,确定目标时间分值;该第一对应关系包括多个预设时间差范围,以及每个预设时间差范围对应的时间分值;
具体地,参照图4所示的实施例中步骤S302的阐述,此处不再赘述。
步骤S403、获取第一位置的第一精度和第三位置的第二精度的精度差;
具体地,参照图4所示的实施例中步骤S303的阐述,此处不再赘述。
步骤S404、根据第二对应关系、该精度差,确定目标精度分值;该第二对应关系包括多个预设精度差范围,以及每个预设精度差范围对应的精度分值;
具体地,参照图4所示的实施例中步骤S304的阐述,此处不再赘述。
步骤S405、根据目标时间分值和目标精度分值,确定判决分值;
具体地,参照图4所示的实施例中步骤S305的阐述,此处不再赘述。
步骤S406、根据判决分值、预设阈值、该第一方式和该第二方式,从第一位置和所述第三位置中确定该终端当前的位置。
具体地,根据判决分值、预设阈值、该第一方式和该第二方式,从第一位置和所述第三位置中确定该终端当前的位置,包括:
若该判决分值大于第一预设阈值,则确定该第一位置为该终端当前的位置;
若该判决分值小于第二预设阈值,则确定该第三位置为该终端当前的位置;
若该判决分值大于或等于第二预设阈值且小于或等于第一预设阈值,并且该第一方式和该第二方式相同,则确定该第一位置为该终端当前的位置;
若该判决分值大于或等于第二预设阈值且小于或等于第一预设阈值,并且该第一方式和该第二方式不相同,则确定该第三位置为该终端当前的位置。
其中,第一预设阈值可为0.35,第二预设阈值可为0.3。
若该判决分值大于第一预设阈值,说明判决分值较高,可能是由于第一位置时间上很新造成的,也可能是第一位置的精度很高造成的,还可能是第一位置时间上较新造成的以及第一位置的精度较高造成的,即综合考虑第一位置和第三位置在时间上新的程度以及在精度上高的程度后,将第一位置确定为该终端当前的位置比较合理。
若该判决分值小于第二预设阈值,说明判决分值较低,可能是由于第一位置时间上很旧造成的,也可能是第一位置的精度很低造成的,还可能是第一位置时间上较低以及第一位置的精度较低造成的,即综合考虑第一位置和第三位置在时间上新的程度以及在精度上高的程度后,将第三位置确定为该终端当前的位置比较合理。
若该判决分值在第一预设阈值和第二预设阈值之间,此时可考虑定位第一位置的方式和定位第三位置的方式,由于在同一种定位方式下不同时刻间的定位之间的比较可信度较高,因此,若定位第一位置的方式和定位第三位置的方式相同,则确定该第一位置为该终端当前的位置,若定位第一位置的方式和定位第三位置的方式不相同,则确定该第三位置 为该终端当前的位置。
本实施例实现了综合考虑当前的定位得到的第一位置的时间、精度和定位方式和在定位到第一位置之前确定的终端的第三位置的时间、精度和定位方式,从时间、精度和定位方式上来确定当前定位到的第一位置比较准确,还是上次确定的第三位置比较准确的目的,从而进一步提高了确定终端位置的准确度。
上文中结合图2至图5,详细描述了根据本申请所提供的定位的方法,下面将结合图6,描述根据本申请所提供的定位的装置。
图6为本申请实施例提供的定位的装置的结构示意图,参见图6,本实施例的装置,包括:定位模块61和确定模块62;
定位模块61,用于对装置进行定位,得到第一位置信息,所述第一位置信息包括所述定位得到的第一位置;
确定模块62,用于若所述第一位置与上次定位到的第二位置不相同,则根据所述第一位置信息和第二位置信息,确定所述装置当前的位置,所述第二位置信息为所述装置定位得到第三位置时所对应的位置信息,所述第三位置为所述装置在得到所述第一位置前确定的所述装置的位置。
可选地,所述确定模块62,还用于若所述第一位置与上次定位到的第二位置不相同且所述装置无法获取到所述第三位置时,则确定所述第一位置为该装置当前的位置。
可选地,所述第一位置信息还包括:定位所述第一位置的第一时间和所述第一位置的第一精度,所述第二位置信息还包括:定位所述第三位置的第二时间和所述第三位置的第二精度;
所述确定模块62,具体用于:根据所述第一时间、所述第二时间、所述第一精度和所述第二精度,从所述第一位置和所述第三位置中确定所述装置当前的位置。
可选地,所述第一位置信息还包括定位所述第一位置的第一方式,所述第二位置信息还包括定位所述第三位置的第二方式;
所述确定模块62,具体用于:根据所述第一时间、所述第二时间、所述第一精度、所述第二精度、所述第一方式和所述第二方式,从所述第一位置和所述第三位置中确定所述装置当前的位置。
可选地,所述装置存储有第一对应关系和第二对应关系,所述第一对应关系包括多个预设时间差范围,以及每个预设时间差范围对应的时间分值,所述第二对应关系包括多个预设精度差范围,以及每个预设精度差范围对应的精度分值;所述确定模块62具体用于:
获取所述第一时间和所述第二时间的时间差;
根据所述第一对应关系、所述时间差,确定目标时间分值;
获取所述第一精度和所述第二精度的精度差;
根据所述第二对应关系、所述精度差,确定目标精度分值;
根据所述目标时间分值和目标精度分值,确定判决分值;
根据所述判决分值和预设阈值,从所述第一位置和所述第三位置中确定所述装置当前的位置。
可选地,所述确定模块62具体用于:
确定所述时间差所在的目标预设时间差范围;
确定所述第一对应关系中,所述目标预设时间差范围所对应的时间分值为所述目标时间分值。
可选地,所述确定模块62具体用于:
确定所述精度差所在的目标预设精度差范围;
确定所述第二对应关系中,所述目标预设精度差范围所对应的精度分值为所述目标精度分值。
可选地,所述确定模块62具体用于:
获取所述目标时间分值与时间权重的第一乘积;
获取所述目标精度分值与精度权重的第二乘积;
根据所述第一乘积和所述第二乘积,得到所述判决分值。
可选地,所述确定模块具体62用于:
若所述判决分值大于或等于所述预设阈值,则确定所述第一位置为所述终端当前的位置;
若所述判决分值小于所述预设阈值,则确定所述第三位置为所述终端当前的位置。
可选地,所述装置存储有第一对应关系和第二对应关系,所述第一对应关系包括多个预设时间差范围,以及每个预设时间差范围对应的时间分值,所述第二对应关系包括多个预设精度差范围,以及每个预设精度差范围对应的精度分值;所述确定模块62具体用于:
获取所述第一时间和所述第二时间的时间差;
根据所述第一对应关系、所述时间差,确定目标时间分值;
获取所述第一精度和所述第二精度的精度差;
根据所述第二对应关系、所述精度差,确定目标精度分值;
根据所述目标时间分值和目标精度分值,确定判决分值;
根据所述判决分值、预设阈值、所述第一方式和所述第二方式,从所述第一位置和所述第三位置中确定所述装置当前的位置。
可选地,所述确定模块62具体用于:
若所述判决分值大于第一预设阈值,则确定所述第一位置为所述终端当前的位置;
若所述判决分值小于第二预设阈值,则确定所述第三位置为所述终端当前的位置;
若所述判决分值大于或等于第二预设阈值且小于或等于第一预设阈值,并且所述第一方式和所述第二方式相同,则确定所述第一位置为所述终端当前的位置;
若所述判决分值大于或等于第二预设阈值且小于或等于第一预设阈值,并且所述第一方式和所述第二方式不相同,则确定所述第三位置为所述终端当前的位置。
本实施例的装置,可以用于执行上述方法实施例的技术方案,其实现原理和技术效果类似,此处不再赘述。
图7为本申请实施例提供的终端的结构示意图,参见图7,本实施例的终端包括:处理器72、存储器71和通信总线73,通信总线73用于连接处理器71和存储器72,处理器71与存储器72耦合;
所述存储器71用于,存储计算机程序;
所述处理器72用于,调用所述存储器中存储的计算机程序,以实现上述方法实施例中的方法。
其中,计算机程序还可存储在终端外部的存储器中。
应理解,在本申请实施例中,该处理器72可以是CPU,该处理器72还可以是其他通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者是任何常规的处理器等。
该存储器71可以包括只读存储器和随机存取存储器,并向处理器72提供指令和数据。存储器71还可以包括非易失性随机存取存储器。例如,存储器71还可以存储设备类型的信息。
该存储器71可以是易失性存储器或非易失性存储器,或均可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(read-only memory,ROM)、可编程只读存储器(programmable ROM,PROM)、可擦除可编程只读存储器(erasable PROM,EPROM)、电可擦除可编程只读存储器(electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory,RAM),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的RAM可用,例如静态随机存取存储器(static RAM,SRAM)、动态随机存取存储器(DRAM)、同步动态随机存取存储器(synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(double data date SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM,SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM,DR RAM)。
该总线73除包括数据总线之外,还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见,在图中将各种总线都标为总线73。
本申请实施例提供一种可读存储介质,包括程序或指令,当所述程序或指令在计算机上运行时,上述方法实施例中的方法被执行。
上述实施例,可以全部或部分地通过软件、硬件、固件或其他任意组合来实现。当使用软件实现时,上述实施例可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载或执行所述计算机程序指令时,全部或部分地产生按照本申请所述的流程或功能。所述计算机可以为通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一个计算机可读存储介质传输,例如,所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集合的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如,软盘、硬盘、磁带)、光介质(例如,DVD)、或者半导体介质。半导体介质可以是固态硬盘(solid state drive,SSD)。
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应以所述权利要求的保护范围为准。

Claims (20)

  1. 一种定位的方法,应用于终端,其特征在于,所述方法包括:
    对终端进行定位,得到第一位置信息,所述第一位置信息包括所述定位得到的第一位置;
    若所述第一位置与上次定位到的第二位置不相同,则根据所述第一位置信息和第二位置信息,确定所述终端当前的位置,所述第二位置信息为所述终端定位得到第三位置时所对应的位置信息,所述第三位置为所述终端在得到所述第一位置前确定的所述终端的位置。
  2. 根据权利要求1所述的方法,其特征在于,若所述第一位置与上次定位到的第二位置不相同且所述终端无法获取到所述第三位置时,则确定所述第一位置为该终端当前的位置。
  3. 根据权利要求1或2所述的方法,其特征在于,所述第一位置信息还包括:定位所述第一位置的第一时间和所述第一位置的第一精度,所述第二位置信息还包括:定位所述第三位置的第二时间和所述第三位置的第二精度;
    所述根据所述第一位置信息和第二位置信息,确定所述终端当前的位置,包括:
    根据所述第一时间、所述第二时间、所述第一精度和所述第二精度,从所述第一位置和所述第三位置中确定所述终端当前的位置。
  4. 根据权利要求3所述的方法,其特征在于,所述第一位置信息还包括定位所述第一位置的第一方式,所述第二位置信息还包括定位所述第三位置的第二方式;
    所述根据所述第一时间、所述第二时间、所述第一精度和所述第二精度,确定所述终端当前的位置,包括:
    根据所述第一时间、所述第二时间、所述第一精度、所述第二精度、所述第一方式和所述第二方式,从所述第一位置和所述第三位置中确定所述终端当前的位置。
  5. 根据权利要求3所述的方法,其特征在于,所述终端存储有第一对应关系和第二对应关系,所述第一对应关系包括多个预设时间差范围,以及每个预设时间差范围对应的时间分值,所述第二对应关系包括多个预设精度差范围,以及每个预设精度差范围对应的精度分值;
    所述根据所述第一时间、所述第二时间、所述第一精度和所述第二精度,从所述第一位置和所述第三位置中确定所述终端当前的位置,包括:
    获取所述第一时间和所述第二时间的时间差;
    根据所述第一对应关系、所述时间差,确定目标时间分值;
    获取所述第一精度和所述第二精度的精度差;
    根据所述第二对应关系、所述精度差,确定目标精度分值;
    根据所述目标时间分值和目标精度分值,确定判决分值;
    根据所述判决分值和预设阈值,从所述第一位置和所述第三位置中确定所述终端当前的位置。
  6. 根据权利要求5所述的方法,其特征在于,根据所述第一对应关系、所述时间差,确定所述目标时间分值,包括:
    确定所述时间差所在的目标预设时间差范围;
    确定所述第一对应关系中,所述目标预设时间差范围所对应的时间分值为所述目标时间分值。
  7. 根据权利要求5或6所述的方法,其特征在于,根据所述第二对应关系、所述精度差,确定所述目标精度分值,包括:
    确定所述精度差所在的目标预设精度差范围;
    确定所述第二对应关系中,所述目标预设精度差范围所对应的精度分值为所述目标精度分值。
  8. 根据权利要求5~7任一项所述的方法,其特征在于,所述根据所述时间分值和精度分值,确定判决分值,包括:
    获取所述目标时间分值与时间权重的第一乘积;
    获取所述目标精度分值与精度权重的第二乘积;
    根据所述第一乘积和所述第二乘积,得到所述判决分值。
  9. 根据权利要求5~8任一项所述的方法,其特征在于,根据所述判决分值和预设阈值,从所述第一位置和所述第三位置中确定所述终端当前的位置,包括:
    若所述判决分值大于或等于所述预设阈值,则确定所述第一位置为所述终端当前的位置;
    若所述判决分值小于所述预设阈值,则确定所述第三位置为所述终端当前的位置。
  10. 根据权利要求4所述的方法,其特征在于,所述终端存储有第一对应关系和第二对应关系,所述第一对应关系包括多个预设时间差范围,以及每个预设时间差范围对应的时间分值,所述第二对应关系包括多个预设精度差范围,以及每个预设精度差范围对应的精度分值;
    所述根据所述第一时间、所述第二时间、所述第一精度、所述第二精度、所述第一方式和所述第二方式,从所述第一位置和所述第三位置中确定所述终端当前的位置,包括:
    获取所述第一时间和所述第二时间的时间差;
    根据所述第一对应关系、所述时间差,确定目标时间分值;
    获取所述第一精度和所述第二精度的精度差;
    根据所述第二对应关系、所述精度差,确定目标精度分值
    根据所述目标时间分值和所述目标精度分值,确定判决分值;
    根据所述判决分值、预设阈值、所述第一方式和所述第二方式,从所述第一位置和所述第三位置中确定所述终端当前的位置。
  11. 根据权利要求10所述的方法,其特征在于,根据所述判决分值、预设阈值、所述第一方式和所述第二方式,从所述第一位置和所述第三位置中确定所述终端当前的位置,包括:
    若所述判决分值大于第一预设阈值,则确定所述第一位置为所述终端当前的位置;
    若所述判决分值小于第二预设阈值,则确定所述第三位置为所述终端当前的位置;
    若所述判决分值大于或等于第二预设阈值且小于或等于第一预设阈值,并且所述第一方式和所述第二方式相同,则确定所述第一位置为所述终端当前的位置;
    若所述判决分值大于或等于第二预设阈值且小于或等于第一预设阈值,并且所述 第一方式和所述第二方式不相同,则确定所述第三位置为所述终端当前的位置。
  12. 一种定位的装置,其特征在于,包括:
    定位模块,用于对装置进行定位,得到第一位置信息,所述第一位置信息包括所述定位得到的第一位置;
    确定模块,用于若所述第一位置与上次定位到的第二位置不相同,则根据所述第一位置信息和第二位置信息,确定所述装置当前的位置,所述第二位置信息为所述装置定位得到第三位置时所对应的位置信息,所述第三位置为所述装置在得到所述第一位置前确定的所述装置的位置。
  13. 根据权利要求12所述的装置,其特征在于,所述确定模块,还用于若所述第一位置与上次定位到的第二位置不相同且所述装置无法获取到所述第三位置时,则确定所述第一位置为该装置当前的位置。
  14. 根据权利要求12或13所述的装置,其特征在于,所述第一位置信息还包括:定位所述第一位置的第一时间和所述第一位置的第一精度,所述第二位置信息还包括:定位所述第三位置的第二时间和所述第三位置的第二精度;
    所述确定模块,具体用于:根据所述第一时间、所述第二时间、所述第一精度和所述第二精度,从所述第一位置和所述第三位置中确定所述装置当前的位置。
  15. 根据权利要求14所述的装置,其特征在于,所述第一位置信息还包括定位所述第一位置的第一方式,所述第二位置信息还包括定位所述第三位置的第二方式;
    所述确定模块,具体用于:根据所述第一时间、所述第二时间、所述第一精度、所述第二精度、所述第一方式和所述第二方式,从所述第一位置和所述第三位置中确定所述装置当前的位置。
  16. 根据权利要求14所述的装置,其特征在于,所述装置存储有第一对应关系和第二对应关系,所述第一对应关系包括多个预设时间差范围,以及每个预设时间差范围对应的时间分值,所述第二对应关系包括多个预设精度差范围,以及每个预设精度差范围对应的精度分值;所述确定模块具体用于:
    获取所述第一时间和所述第二时间的时间差;
    根据所述第一对应关系、所述时间差,确定目标时间分值;
    获取所述第一精度和所述第二精度的精度差;
    根据所述第二对应关系、所述精度差,确定目标精度分值;
    根据所述目标时间分值和目标精度分值,确定判决分值;
    根据所述判决分值和预设阈值,从所述第一位置和所述第三位置中确定所述装置当前的位置。
  17. 根据权利要求15所述的装置,其特征在于,所述装置存储有第一对应关系和第二对应关系,所述第一对应关系包括多个预设时间差范围,以及每个预设时间差范围对应的时间分值,所述第二对应关系包括多个预设精度差范围,以及每个预设精度差范围对应的精度分值;所述确定模块具体用于:
    获取所述第一时间和所述第二时间的时间差;
    根据所述第一对应关系、所述时间差,确定目标时间分值;
    获取所述第一精度和所述第二精度的精度差;
    根据所述第二对应关系、所述精度差,确定目标精度分值;
    根据所述目标时间分值和目标精度分值,确定判决分值;
    根据所述判决分值、预设阈值第一方式和所述第二方式,从所述第一位置和所述第三位置中确定所述装置当前的位置。
  18. 一种终端,其特征在于,包括处理器;
    所述处理器用于与存储器耦合,读取并执行所述存储器中的指令,以实现如权1-11任一所述的方法。
  19. 根据权利要求18所述的终端,其特征在于,还包括所述存储器。
  20. 一种计算机存储介质,包括指令,其特征在于,当所述指令在通信装置上运行时,使得所述计算机执行如权1-11任一所述的方法。
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