WO2017088474A1 - Procédé et appareil permettant d'améliorer la précision de positionnement - Google Patents

Procédé et appareil permettant d'améliorer la précision de positionnement Download PDF

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Publication number
WO2017088474A1
WO2017088474A1 PCT/CN2016/087696 CN2016087696W WO2017088474A1 WO 2017088474 A1 WO2017088474 A1 WO 2017088474A1 CN 2016087696 W CN2016087696 W CN 2016087696W WO 2017088474 A1 WO2017088474 A1 WO 2017088474A1
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WO
WIPO (PCT)
Prior art keywords
positioning
basis
information
historical
positioning basis
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Application number
PCT/CN2016/087696
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English (en)
Chinese (zh)
Inventor
罗耀燊
李成洲
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北京百度网讯科技有限公司
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Publication of WO2017088474A1 publication Critical patent/WO2017088474A1/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
    • H04W4/029—Location-based management or tracking services
    • 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
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/12—Messaging; Mailboxes; Announcements
    • H04W4/14—Short messaging services, e.g. short message services [SMS] or unstructured supplementary service data [USSD]

Definitions

  • Embodiments of the present invention relate to the field of offline positioning technologies, and in particular, to a method and apparatus for improving positioning accuracy.
  • Offline positioning means that the positioning server actively pushes the positioning data according to the client and saves it on the client.
  • the positioning data according to the pushing can be used for positioning.
  • the positioning data is invalid during the period due to the movement of the device according to the positioning, for example, Wireless Fidelity (WIFI) access point or base station moves, resulting in misalignment (badcase, that is, the result of poor positioning, the location information obtained by the user through the location service is inaccurate or the acquired location information deviates from the user. If the real position is outside the allowable range), the positioning accuracy is low.
  • WIFI Wireless Fidelity
  • Embodiments of the present invention provide a method and apparatus for improving positioning accuracy, so as to improve positioning update efficiency and improve positioning accuracy.
  • an embodiment of the present invention provides a method for improving positioning accuracy, including:
  • the notification message is used to prompt the client to update the determined historical positioning basis information.
  • an embodiment of the present invention further provides an apparatus for improving positioning accuracy, including:
  • the positioning obtaining unit is configured to obtain a positioning basis of the geographical position change by using the positioning log;
  • a positioning basis information determining unit configured to determine historical positioning basis information related to the positioning basis of the geographical location change
  • the notification message sending unit is configured to send a notification message to the client, where the notification message is used to prompt the client to update the determined historical positioning basis information.
  • the technical solution provided by the embodiment of the present invention determines a positioning basis of the location movement and a historical positioning basis information related to the positioning basis of the location movement, and sends a notification message to the client, where the notification message is used to prompt the client to update the determined history.
  • the client only needs to update the positioning information related to the positioning basis of the location movement, and cleans the potential positioning data of the potential badcase, without re-updating all the offline positioning data that has been downloaded.
  • the data update efficiency is improved, and the offline failure time is also extended according to the data; in addition, after the above-mentioned positioning is used according to the data update mechanism, the offline positioning of the bad case is improved, and the positioning accuracy is improved.
  • Embodiment 1 is a flow chart showing a method for improving positioning accuracy according to Embodiment 1 of the present invention. intention;
  • FIG. 2 is a schematic flowchart of a method for improving positioning accuracy according to Embodiment 2 of the present invention
  • FIG. 3 is a schematic structural diagram of an apparatus for improving positioning accuracy according to Embodiment 3 of the present invention.
  • FIG. 4 is a block diagram showing the structure of a computer system suitable for implementing a terminal device or a server of an embodiment of the present application.
  • FIG. 1 is a schematic flow chart of a method for improving positioning accuracy according to Embodiment 1 of the present invention.
  • the method is applicable to the situation that the location-based information needs to be pushed to the client, and can be performed by a device configured to improve the positioning accuracy in the positioning server, and the device can be implemented by software and/or hardware.
  • the positioning method provided in this embodiment specifically includes the following operations:
  • the positioning basis may include a WIFI router and/or a base station according to a positioning technique used by the positioning platform.
  • the local fingerprint database information corresponding to the positioning is not updated, and the client scans the fingerprint features of the positioning changes according to the geographical location to match the local fingerprint database.
  • the location information obtained by the user is inaccurate or the location information obtained by the user deviates from the user's real The location is outside the allowable range.
  • a certain router L moves from the A position to the B position, and the A position is far from the B position, and the positioning basis information corresponding to the router L in the local fingerprint database is not updated, when the user uses the client near the B position.
  • the client obtains the identification information of the scanned WIFI signal of the router L, and matches the acquired identification information of the WIFI signal with the local fingerprint database, and is likely to be located near the A location.
  • the server can obtain the positioning basis of the geographic location change according to the feedback information or the location log of the user. Specifically, if the location log finds that some location points in a certain location area are far from the location of the surrounding positioning points, Then, the positioning basis information used when positioning the positioning points which are far apart from each other can be obtained, thereby finding the positioning basis of the geographical position change. For example, by setting the log, it is found that the user locates the location at the position C at the time t1, and the location is at the location D at the time t2, and the user cannot reach the D position from the C position during the period from t1 to t2, and finds the positioning. The positioning basis used by the points C and D to determine the positioning basis for the geographical change.
  • S120 Determine historical positioning basis information related to the positioning basis of the geographical location change.
  • the client may obtain at least one fingerprint feature scanned by the terminal, that is, a media access control (MAC) address of at least one WIFI access point or a global cell identifier (CGI) of the base station. (Cell Global Identifier), and the corresponding Received Signal Strength Indication (RSSI), which is matched with the locally stored positioning information.
  • the positioning basis information may include WIFI and/or base station fingerprint database information.
  • the WIFI database information may include the identifier information of the WIFI signal and the geographical location information corresponding to the identifier information.
  • the identifier of the WIFI signal may be represented as ⁇ MAC1, RSSI1; MAC2, RSSI2; ... ⁇ , and the identifier information includes multiple WIFI access points.
  • the base station fingerprint database information may include identification information of the base station signal and a geographical location letter corresponding to the identification information.
  • the identifier of the base station signal can be expressed as ⁇ CGI1, RSSI1; CGI2, RSSI2; ... ⁇ .
  • the positioning basis information may include the fingerprint database information of the WIFI and the base station.
  • the server can search for the historical positioning basis information related to the positioning basis of the current geographical position change in the positioning basis database.
  • the notification message includes the determined historical positioning basis information, and new positioning basis information related to the positioning basis of the geographical position change.
  • the MAC of the router is represented by MAC 0 0.
  • the determined historical positioning basis information may be ⁇ (X0, Y0)
  • the determined new positioning information associated with the router is ⁇ (X1, Y1)
  • the server Since the server does not need to send the full amount of positioning basis information to the client, the amount of the sent notification message is relatively small, and the server may periodically send a notification message to the client according to the set data update period, or may send a notification according to the user's request.
  • the message such as when the user uses the positioning function, the client may actively send a request for updating the positioning information to the server through the client.
  • the above data update mechanism can ensure that the client timely updates the positioning information and controls the positioning misalignment.
  • the reason for the location change according to the geographical location may be due to the presence of one or more positioning bases in any place, such as a newly created WIFI access point or a base station, etc., due to the fingerprint database stored locally on the server and the client. There is no historical positioning basis information related to these newly-created positioning criteria, and the server may only send new positioning basis information related to the positioning basis information of the geographical location change to the client.
  • the fingerprint database stored locally by the client includes the determined historical positioning basis information
  • the notification message sent by the server to the client includes the determined historical positioning basis information
  • the location change may be based on the relevant new positioning information
  • the determined historical positioning information in the notification message sent by the server may be matched with the fingerprint database stored locally by the client.
  • the new positioning may be used.
  • the determined historical location basis information of the local storage is replaced according to the information.
  • the client may use the new positioning basis information ⁇ (X1, Y1)
  • the client may correlate the local storage with the positioning according to the received notification message. The location is cleaned up based on the information. After some positioning basis is removed and disappeared, the client can also clean the positioning information related to the disappearing positioning basis.
  • the location information of the location movement and the historical location information related to the location of the location movement are determined, and the notification message is sent to the client, where the notification message is used to prompt the client to update the determined historical location.
  • the location-based data of the potential badcase is cleaned without re-updating all the offline location-based data that has been downloaded, and the data update is improved.
  • Efficiency, offline positioning can also be extended according to the data expiration time; after using the above data update mechanism, the offline positioning of the badcase situation is improved, and the offline positioning accuracy is improved.
  • Embodiment 2 is a flow chart showing a method for improving positioning accuracy according to Embodiment 2 of the present invention. intention. This embodiment is optimized for the foregoing embodiment. Referring to FIG. 2, the method for improving positioning accuracy provided by this embodiment specifically includes the following operations:
  • S210 Determine, by using a positioning log, a positioning basis that is different from a historical geographical location; or, by using a positioning log, determine a positioning basis that newly appears or disappears in any geographic location.
  • the geographical position change based on the positioning is because the positioning is moved from one location to another; or it is newly appearing or disappearing in a certain place. For example, moving a WIFI router, ie, a WIFI access point, from one location to another; or, newly setting up a WIFI router or newly constructing a base station in either geographic location; and, again, removing a WIFI router or base station ,No longer use.
  • the positioning log can be used to determine the positioning basis of the current geographical location and the historical geographical location; or, by positioning the log, the positioning basis for newly appearing or disappearing in any geographical location is determined.
  • the positioning basis information may be WIFI and/or base station fingerprint database information.
  • the positioning basis may be a WIFI router and/or a base station.
  • the WIFI fingerprint database information may be in the form of ⁇ (X, Y)
  • One or more pieces of information in the determination are WIFI routers and/or base stations that change geographically. That is, the positioning is based on the relevant historical positioning information.
  • S240 Send a notification message to the client, where the notification message is used to prompt the client to update the determined historical positioning basis information.
  • the technical solution provided by the embodiment uses the relevant judging mechanism to accurately determine the positioning basis of the geographical location change and the historical positioning basis information related thereto, and then sends a notification message to the client, where the notification message is used to prompt the client to update.
  • the historical positioning based on the information using an efficient positioning based on the data update mechanism, can effectively control offline positioning badcase, and save data transmission.
  • FIG. 3 is a schematic structural diagram of an apparatus for improving positioning accuracy according to Embodiment 3 of the present invention.
  • the apparatus includes:
  • the location obtaining unit 310 is configured to obtain a positioning basis of the geographic location change by using the positioning log;
  • the location-based information determining unit 320 is configured to determine historical positioning basis information related to the positioning basis of the geographical location change
  • the notification message sending unit 330 is configured to send a notification message to the client, where the notification message is used to prompt the client to update the determined historical positioning basis information.
  • the notification message includes:
  • the historical targeting information that has been determined, as well as the new targeting information related to the positioning basis of the geographic location change is not limited.
  • the positioning basis includes: a WIFI router and/or a base station;
  • the positioning basis information includes: WIFI and/or base station fingerprint database information.
  • the positioning according to the acquiring unit 310 includes:
  • the first positioning determining unit 311 is configured to determine, according to the positioning log, a positioning basis that is different from the historical geographical position;
  • the second positioning determining unit 312 is configured to determine, according to the positioning log, a positioning basis that newly appears or disappears in any geographic location.
  • the positioning according information determining unit 320 includes:
  • the location-based information determining sub-unit 321 is configured to determine whether the historical positioning-based information pushed to the client includes the positioning-based information that matches the positioning basis of the geographically-changed location;
  • the location-based information determining sub-unit 322 is configured to determine, if the historical location-based information pushed to the client includes the location-based information that matches the location-based change of the geographical location, determining the history related to the location-based change of the geographic location change Targeting information.
  • the above device can perform the method for improving the positioning accuracy provided by any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.
  • FIG. 4 is a block diagram showing the structure of a computer system suitable for implementing a terminal device or a server of an embodiment of the present application.
  • computer system 400 includes a central processing unit (CPU) 401 that can be loaded into a program in random access memory (RAM) 403 according to a program stored in read only memory (ROM) 402 or from storage portion 408. And perform various appropriate actions and processes.
  • RAM random access memory
  • ROM read only memory
  • RAM 403 various programs and data required for the operation of the system 400 are also stored.
  • the CPU 401, the ROM 402, and the RAM 403 are connected to each other through a bus 404.
  • An input/output (I/O) interface 405 is also coupled to bus 404.
  • the following components are connected to the I/O interface 405: an input portion 406 including a keyboard, a mouse, etc.; an output portion 407 including a cathode ray tube (CRT), a liquid crystal display (LCD), and the like, and a storage portion 408 including a hard disk or the like. And a communication portion 409 including a network interface card such as a LAN card, a modem, or the like. Communication portion 409 via, for example, the Internet The network performs communication processing.
  • Driver 410 is also coupled to I/O interface 405 as needed.
  • a removable medium 411 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory or the like is mounted on the drive 410 as needed so that a computer program read therefrom is installed into the storage portion 408 as needed.
  • an embodiment of the present disclosure includes a computer program product comprising a computer program tangibly embodied on a machine readable medium, the computer program comprising program code for executing the method illustrated in the flowchart.
  • the computer program can be downloaded and installed from the network via the communication portion 409, and/or installed from the removable medium 411.
  • each block of the flowchart or block diagrams can represent a module, a program segment, or a portion of code that includes one or more logic for implementing the specified.
  • Functional executable instructions can also occur in a different order than that illustrated in the drawings. For example, two successively represented blocks may in fact be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending upon the functionality involved.
  • each block of the block diagrams and/or flowcharts, and combinations of blocks in the block diagrams and/or flowcharts can be implemented in a dedicated hardware-based system that performs the specified function or operation. Or it can be implemented by a combination of dedicated hardware and computer instructions.
  • the present application further provides a non-volatile computer storage medium, which may be a non-volatile computer storage medium included in the apparatus described in the foregoing embodiments; It may be a non-volatile computer storage medium that exists alone and is not assembled into the terminal.
  • the above non-volatile computer storage medium stores one or more programs, when the one or more programs are executed by one device, causing the device to pass
  • the positioning log obtains the positioning basis of the geographical change; determines the historical positioning basis information related to the positioning basis of the geographical location change; sends a notification message to the client, where the notification message is used to prompt the client to update the determined historical positioning basis information.

Abstract

L'invention concerne un procédé et un appareil permettant d'améliorer la précision de positionnement. Le procédé comprend les étapes consistant à : obtenir une base de positionnement d'un changement de position géographique au moyen d'un journal de positionnement; déterminer des informations de base de positionnement historiques concernant la base de positionnement du changement de position géographique ; et envoyer un message de notification à un client, le message de notification servant à inviter le client à mettre à jour les informations de base de positionnement historiques déterminées. La solution technique des modes de réalisation de la présente invention évite à un client de remettre à jour toutes les données de base de positionnement hors ligne ayant jamais été téléchargées, ce qui améliore l'efficacité de la mise à jour des données et permet d'augmenter le temps de défaillance des données de base de positionnement hors ligne. Après qu'un mécanisme a été mis à jour à l'aide des données de base de positionnement, un scénario de « cas de positionnement défavorable » du positionnement hors ligne se retrouve amélioré, ce qui augmente la précision du positionnement hors ligne.
PCT/CN2016/087696 2015-11-23 2016-06-29 Procédé et appareil permettant d'améliorer la précision de positionnement WO2017088474A1 (fr)

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CN105338493A (zh) * 2015-11-23 2016-02-17 北京百度网讯科技有限公司 一种提高定位准确度的方法和装置
CN107463585B (zh) * 2016-06-06 2022-11-15 中兴通讯股份有限公司 指纹数据入库处理方法及装置
CN107889062B (zh) * 2017-11-24 2020-10-30 北京小米移动软件有限公司 离线定位的数据学习方法和装置
CN109951805B (zh) * 2017-12-20 2021-06-25 腾讯科技（深圳）有限公司 一种位置数据处理方法、装置以及相关设备
CN109462887A (zh) * 2018-12-19 2019-03-12 京信通信系统（中国）有限公司 基于蓝牙的定位方法、装置、计算机存储介质及设备

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