CN105025437B - A kind of localization method, apparatus and system - Google Patents
A kind of localization method, apparatus and system Download PDFInfo
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- CN105025437B CN105025437B CN201510295656.5A CN201510295656A CN105025437B CN 105025437 B CN105025437 B CN 105025437B CN 201510295656 A CN201510295656 A CN 201510295656A CN 105025437 B CN105025437 B CN 105025437B
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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
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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
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
- H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/0009—Transmission of position information to remote stations
- G01S5/0045—Transmission from base station to mobile station
- G01S5/0063—Transmission from base station to mobile station of measured values, i.e. measurement on base station and position calculation on mobile
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Mobile Radio Communication Systems (AREA)
- Telephone Function (AREA)
Abstract
The invention discloses a kind of localization methods, apparatus and system, it is related to field of communication technology, the first distance of terminal and user equipment is first obtained in the present invention using GPS positioning, when first distance is less than or equal to preset threshold, restart the Bluetooth base. station, broadcast message is sent by Bluetooth base. station, so that the target UE is after receiving the broadcast singal, its current distance between the terminal is determined according to the signal strength of the broadcast singal, to quickly, accurately determine the current distance between the target UE and terminal, it shortens user and driver finds the time of other side, convenient for completing order in time, and avoid phenomena such as failing to keep an appointment, improve user experience.
Description
Technical field
The present invention relates to field of communication technology, in particular to a kind of localization method, apparatus and system.
Background technique
For example the mobile application softwares such as taxi-hailing software are widely known, and user can easily pass through user in trip
Equipment (UE) issues demand, and directly links up with service end subscriber, substantially increases efficiency of service.
For the taxi-hailing software that driver instantly uses, driver using terminal check passenger send order, and to its into
Row selection, i.e. order operate, and are being after the driver distributes order, passenger to be met by GPS positioning, but due to GPS by server-side
Positioning limited accuracy, and signal is often blocked by city middle-high building object so that in many cases, taxi-hailing software
Occur deviations in position fixing process, driver is caused to go during meeting passenger, when both sides are closer, passenger and driver are very
It is difficult to find other side at the first time, if in all unfamiliar place of passenger and driver, both sides' nothing through multiple telephonic communication
The mutual specific distance of method confirmation, it is difficult to complete order in time, and easily cause phenomena such as failing to keep an appointment, seriously affect user
Experience.
Summary of the invention
In view of the above problems, it proposes on the present invention overcomes the above problem or at least be partially solved in order to provide one kind
State a kind of localization method, the apparatus and system of problem.
First aspect according to the present invention provides a kind of localization method, which comprises
Terminal be assigned order information after, obtained in real time by GPS positioning its first between target UE away from
From the target UE is user equipment corresponding with the order information；
The terminal is when the first distance of acquisition is less than or equal to preset threshold, in the terminal preset range
Bluetooth base. station send enabled instruction, by the Bluetooth base. station send broadcast singal so that the target UE is connecing
After receiving the broadcast singal, according to the signal strength of the broadcast singal determine its second between the Bluetooth base. station away from
From, and using the second distance as its current distance between the terminal.
Optionally, the method also includes:
The terminal receives the second distance sent by the target UE.
Optionally, the method also includes:
The second distance is carried out voice prompting and/or displaying by the terminal.
The second aspect according to the present invention provides a kind of positioning system, the system comprises: terminal and bluetooth base
It stands；
The terminal obtains it by GPS positioning between target UE after being assigned order information in real time
First distance, the target UE be user equipment corresponding with order information；
The terminal is also used to when the first distance of acquisition is less than or equal to preset threshold, and to being located at, the terminal is pre-
If the Bluetooth base. station in range sends enabled instruction, broadcast singal is sent by the Bluetooth base. station, so that the target user
Equipment determines it between the Bluetooth base. station after receiving the broadcast singal, according to the signal strength of the broadcast singal
Second distance, and using the second distance as its current distance between the terminal.
Optionally, the terminal is also used to receive the second distance sent by the target UE.
Optionally, the terminal is also used to the second distance carrying out voice prompting and/or displaying.
In terms of third according to the present invention, a kind of localization method is provided, which comprises
After receiving the broadcast singal that the Bluetooth base. station being located in terminal preset range is sent, according to the Bluetooth base. station
Signal strength calculate the second distance between the Bluetooth base. station, and using the second distance as between the terminal
Current distance；
The identification number of the Bluetooth base. station and second distance are sent to server-side, so that the server-side is by described
Two distances are forwarded to terminal corresponding with the identification number, and the server-side has pair between the identification number and the terminal
It should be related to.
Optionally, the method also includes:
The second distance is subjected to voice prompting and/or displaying.
The 4th aspect according to the present invention, provides a kind of positioning device, described device includes:
Metrics calculation unit, in the broadcast singal for receiving the Bluetooth base. station being located in terminal preset range transmission
Afterwards, according to the signal strength of the Bluetooth base. station calculate and the Bluetooth base. station between second distance, and by described second away from
From as the current distance between the terminal；
Apart from retransmission unit, for the identification number of the Bluetooth base. station and second distance to be sent to server-side, so that
The second distance is forwarded to terminal corresponding with the identification number by the server-side, and the server-side has the identification number
With the corresponding relationship between the terminal.
Optionally, described device further include:
Apart from display unit, for the second distance to be carried out voice prompting and/or displaying.
The first distance for first being obtained terminal and user equipment in the present invention using GPS positioning, is less than or is waited in first distance
When preset threshold, restart the Bluetooth base. station, broadcast message is sent by Bluetooth base. station, so that the target UE
After receiving the broadcast singal, according to the signal strength of the broadcast singal determine its between the terminal it is current away from
From shortening user and driver look for quickly and accurately determine the current distance between the target UE and terminal
To the time of other side, convenient for completing order in time, and phenomena such as failing to keep an appointment is avoided, improve user experience.
Detailed description of the invention
Fig. 1 is a kind of flow chart of the localization method of embodiment of the disclosure；
Fig. 2 is a kind of flow chart of the localization method of embodiment of the disclosure；
Fig. 3 is a kind of structural block diagram of the positioning system of embodiment of the disclosure；
Fig. 4 is a kind of structural block diagram of the positioning device of embodiment of the disclosure.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the disclosure is described in further detail.Implement below
Example is not limited to the scope of the present disclosure for illustrating the disclosure.
Fig. 1 is a kind of flow chart of the localization method of embodiment of the disclosure；Referring to Fig.1, which comprises
S101: terminal be assigned order information after, by global positioning system (Global Positioning System,
GPS it) positions, obtains its first distance between target UE in real time, the target UE is and the order
The corresponding user equipment of information；
Wherein, the correspondence is it is to be understood that an at least item data is used from the target in the order information
Family equipment.
It should be noted that the target UE is the user equipment of passenger, which can reflect passenger's
Position can be the equipment such as mobile phone, tablet computer, palm PC PDA or notebook, can be also other with identity function certainly
Equipment, present embodiment is without restriction to this.
It will be appreciated that the terminal is the terminal of driver, which can reflect the position of driver, can be mobile phone, flat
The equipment that plate computer, palm PC PDA or notebook etc. have similar functions.
S102: the terminal is default to the terminal is located at when the first distance of acquisition is less than or equal to preset threshold
Bluetooth base. station in range sends enabled instruction, broadcast singal is sent by the Bluetooth base. station, so that the target user sets
For after receiving the broadcast singal, determine it between the Bluetooth base. station according to the signal strength of the broadcast singal
Second distance, and using the second distance as its current distance between the terminal.
In the concrete realization, Ibeancon Bluetooth base. station can be used in the Bluetooth base. station, and the Ibeancon is that apple is public
The Bluetooth base. station agreement based on bluetooth 4.0 released is taken charge of, when the user equipment of support Ibeancon enters Ibeancon bluetooth base
The region for the signal covering stood, the user equipment will receive the broadcast singal of Ibeancon Bluetooth base. station sending, can be by connecing
The signal strength of the broadcast singal received calculates the distance between itself and Ibeancon Bluetooth base. station, and due to Ibeancon bluetooth
Base station is typically situated in the terminal preset range and (is generally disposed on the automobile of the driver), so it is between terminal
Distance it is very close, can by the distance between the user equipment and Ibeancon Bluetooth base. station as the user equipment and terminal it
Between current distance, certainly, the Bluetooth base. station also can be used the Bluetooth base. station of other similar function, present embodiment to this not
It limits.
It should be noted that the preset threshold can be come really according to the radius of the signal coverage areas of the Bluetooth base. station
It is fixed, for example, 50m can be set by the preset threshold if the radius of the signal coverage areas of Bluetooth base. station is 50m, certainly,
It can also be configured as needed, for example, it is contemplated that being set smaller than the preset threshold described to the problem of calculating accuracy rate
The value of the radius of the signal coverage areas of Bluetooth base. station, for example, if the radius of the signal coverage areas of Bluetooth base. station is 50m,
It can set the preset threshold to 40m, 30m equivalence.
It will be appreciated that the broadcast singal due to Bluetooth base. station is limited in scope, so whole can not be believed by the broadcast
It number is positioned, if keeping it turned on the Bluetooth base. station persistently, also be easy to cause the waste of the energy, in present embodiment
The first distance that terminal and user equipment are first obtained using GPS positioning when first distance is less than or equal to preset threshold, then is opened
The Bluetooth base. station is moved, broadcast message is sent by Bluetooth base. station, so that the target UE is receiving the broadcast
After signal, its current distance between the terminal is determined according to the signal strength of the broadcast singal, thus quickly, accurately
Ground determines the current distance between the target UE and terminal, shortens user and driver finds the time of other side, just
In completion order in time, and phenomena such as failing to keep an appointment is avoided, improves user experience.
In the concrete realization, since target UE is after determining its current distance between terminal, only target
User equipment obtains the current distance, and also to obtain the current distance convenient for terminal, in present embodiment, the method is also wrapped
It includes:
S103: the terminal receives the second distance sent by the target UE.
After step s 103, to guarantee that driver can understand the second distance, the terminal can in several ways to
Driver prompts the second distance, in present embodiment, the method also includes:
S104: the second distance is carried out voice prompting and/or displaying by the terminal.
Fig. 2 is a kind of flow chart of the localization method of embodiment of the disclosure；Referring to Fig. 2, which comprises
S201: after receiving the broadcast singal that the Bluetooth base. station being located in terminal preset range is sent, according to the indigo plant
The signal strength of tooth base station calculates the second distance between the Bluetooth base. station, and using the second distance as with the end
Current distance between end；
It should be noted that the executing subject of the localization method of present embodiment is user equipment, i.e. the user of passenger sets
It is standby.
S202: being sent to server-side for the identification number of the Bluetooth base. station and second distance, so that the server-side will
The second distance is forwarded to terminal corresponding with the identification number, the server-side have the identification number and the terminal it
Between corresponding relationship.
Due to the corresponding relationship for needing to have between the identification number and the terminal in the server-side, so, having
It, can (Universally Unique Identifier of Bluetooth base. station can be used in the identification number by the identification number before step S202 during body is realized
UUID) corresponding relationship between terminal is pre-saved to the server-side.
Since a driver there may be multiple terminals, normal industry can be achieved for which terminal no matter used convenient for driver
Business demand, in present embodiment, the corresponding relationship between the identification number and terminal be can be regarded as: the department on identification number and terminal
Corresponding relationship between machine account, i.e., the described server-side can first be found and the mark after receiving identification number and second distance
Know number corresponding driver's account, then second distance is sent to the terminal that driver's account is logged in.
After step S202, to guarantee that passenger can understand the second distance, the terminal can in several ways to
Passenger prompts the second distance, in present embodiment, the method also includes:
S203: the second distance is subjected to voice prompting and/or displaying.
For embodiment of the method, for simple description, therefore, it is stated as a series of action combinations, but this field
Technical staff should be aware of, and the embodiment of the present disclosure is not limited by the described action sequence, because implementing according to the disclosure
Example, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art should also know that, specification
Described in embodiment belong to preferred embodiment, necessary to the related movement not necessarily embodiment of the present disclosure.
Fig. 3 is a kind of structural block diagram of the positioning system of embodiment of the disclosure；Reference Fig. 3, the system comprises: terminal
301 and Bluetooth base. station 302；
The terminal 301 obtains itself and target UE by GPS positioning after being assigned order information in real time
Between first distance, the target UE be user equipment corresponding with order information；
The terminal 301 is also used to when the first distance of acquisition is less than or equal to preset threshold, to positioned at the terminal
Bluetooth base. station 302 in 301 preset ranges sends enabled instruction, broadcast singal is sent by the Bluetooth base. station 302, so that institute
Target UE is stated after receiving the broadcast singal, itself and the indigo plant are determined according to the signal strength of the broadcast singal
Second distance between tooth base station 302, and using the second distance as its current distance between the terminal 301.
In a kind of alternative embodiment of the disclosure, the terminal 301 is also used to receive and be sent out by the target UE
The second distance sent.
In a kind of alternative embodiment of the disclosure, the terminal 301 is also used to mention second distance progress voice
Show and/or shows.
Fig. 4 is a kind of structural block diagram of the positioning device of embodiment of the disclosure；Referring to Fig. 4, described device includes:
Metrics calculation unit 401, in the broadcast letter for receiving the Bluetooth base. station being located in terminal preset range transmission
After number, the second distance between the Bluetooth base. station is calculated according to the signal strength of the Bluetooth base. station, and by described second
Distance is as the current distance between the terminal；
It should be noted that the executing subject of the positioning device of present embodiment is user equipment, i.e. the user of passenger sets
It is standby.
Apart from retransmission unit 402, for the identification number of the Bluetooth base. station and second distance to be sent to server-side, so that
It obtains the server-side and the second distance is forwarded to terminal corresponding with the identification number, the server-side has the mark
Corresponding relationship number between the terminal.
In a kind of alternative embodiment of the disclosure, described device further include:
Apart from display unit 403, for the second distance to be carried out voice prompting and/or displaying.
For system embodiments, since it is basically similar to the method embodiment, related so being described relatively simple
Place illustrates referring to the part of embodiment of the method.
It should be noted that in all parts of the system of the disclosure, according to the function that it to be realized to therein
Component has carried out logical partitioning, and still, the present disclosure is not limited thereto, can according to need all parts are repartitioned or
Person's combination for example, can be single component by some component combinations, or some components can be further broken into more
Subassembly.
The various component embodiments of the disclosure can be implemented in hardware, or to run on one or more processors
Software module realize, or be implemented in a combination thereof.It will be understood by those of skill in the art that can be used in practice
Microprocessor or digital signal processor (DSP) realize some or all portions in the system according to the embodiment of the present disclosure
The some or all functions of part.The disclosure is also implemented as a part or complete for executing method as described herein
The device or device program (for example, computer program and computer program product) in portion.Such program for realizing the disclosure
It can store on a computer-readable medium, or may be in the form of one or more signals.Such signal can be with
It downloads from internet website, is perhaps provided on the carrier signal or is provided in any other form.
The disclosure is limited it should be noted that above-described embodiment illustrates rather than the disclosure, and ability
Field technique personnel can be designed alternative embodiment without departing from the scope of the appended claims.In the claims,
Any reference symbol between parentheses should not be configured to limitations on claims.Word "comprising" does not exclude the presence of not
Element or step listed in the claims.Word "a" or "an" located in front of the element does not exclude the presence of multiple such
Element.The disclosure can be by means of including the hardware of several different elements and being come by means of properly programmed computer real
It is existing.In the unit claims listing several devices, several in these devices can be through the same hardware branch
To embody.The use of word first, second, and third does not indicate any sequence.These words can be explained and be run after fame
Claim.
Embodiment of above is only suitable for illustrating the disclosure, and is not the limitation to the disclosure, in relation to the common of technical field
Technical staff can also make a variety of changes and modification without departing from the spirit and scope of the disclosure, therefore all
Equivalent technical solution also belongs to the scope of the disclosure, and the scope of patent protection of the disclosure should be defined by the claims.
Claims (10)
1. a kind of localization method, which is characterized in that the described method includes:
After terminal is assigned order information, its first distance between target UE, institute are obtained in real time by GPS positioning
Stating target UE is user equipment corresponding with the order information；
The terminal is when the first distance of acquisition is less than or equal to preset threshold, to the indigo plant being located in the terminal preset range
Tooth base station sends enabled instruction, broadcast singal is sent by the Bluetooth base. station, so that the target UE is receiving
After the broadcast singal, its second distance between the Bluetooth base. station is determined according to the signal strength of the broadcast singal,
And using the second distance as its current distance between the terminal；
The preset threshold is determined according to the radius of the signal coverage areas of the Bluetooth base. station.
2. the method as described in claim 1, which is characterized in that the method also includes:
The terminal receives the second distance sent by the target UE.
3. method according to claim 2, which is characterized in that the method also includes:
The second distance is carried out voice prompting and/or displaying by the terminal.
4. a kind of positioning system, which is characterized in that the system comprises: terminal and Bluetooth base. station；
The terminal obtains its between target UE by GPS positioning after being assigned order information in real time
One distance, the target UE are user equipment corresponding with order information；
The terminal, is also used to when the first distance of acquisition is less than or equal to preset threshold, presets model to the terminal is located at
Bluetooth base. station in enclosing sends enabled instruction, broadcast singal is sent by the Bluetooth base. station, so that the target UE
After receiving the broadcast singal, its between the Bluetooth base. station is determined according to the signal strength of the broadcast singal
Two distances, and using the second distance as its current distance between the terminal；
The preset threshold is determined according to the radius of the signal coverage areas of the Bluetooth base. station.
5. system as claimed in claim 4, which is characterized in that the terminal is also used to receive by the target UE
The second distance of transmission.
6. system as claimed in claim 5, which is characterized in that the terminal is also used to the second distance carrying out voice
Prompt and/or displaying.
7. a kind of localization method, which is characterized in that the described method includes:
After receiving the broadcast singal that the Bluetooth base. station being located in terminal preset range is sent, according to the letter of the Bluetooth base. station
Second distance number between Strength co-mputation and the Bluetooth base. station, and using the second distance as working as between the terminal
Front distance；
The identification number of the Bluetooth base. station and second distance are sent to server-side so that the server-side by described second away from
From terminal corresponding with the identification number is forwarded to, the server-side has the corresponding pass between the identification number and the terminal
System.
8. the method for claim 7, which is characterized in that the method also includes:
The second distance is subjected to voice prompting and/or displaying.
9. a kind of positioning device, which is characterized in that described device includes:
Metrics calculation unit, for receive be located at terminal preset range in Bluetooth base. station send broadcast singal after, root
According to the Bluetooth base. station signal strength calculate and the Bluetooth base. station between second distance, and using the second distance as
With the current distance between the terminal；
Apart from retransmission unit, for the identification number of the Bluetooth base. station and second distance to be sent to server-side, so that described
The second distance is forwarded to terminal corresponding with the identification number by server-side, and the server-side has the identification number and institute
State the corresponding relationship between terminal.
10. device as claimed in claim 9, which is characterized in that described device further include:
Apart from display unit, for the second distance to be carried out voice prompting and/or displaying.
Priority Applications (18)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510295656.5A CN105025437B (en) | 2015-06-02 | 2015-06-02 | A kind of localization method, apparatus and system |
| EP16739795.9A EP3249602A4 (en) | 2015-01-20 | 2016-01-20 | Information providing system and method for on-demand service |
| KR1020177023047A KR102126660B1 (en) | 2015-01-20 | 2016-01-20 | Systems and methods for providing information for an on-demand service |
| SG11201705930PA SG11201705930PA (en) | 2015-01-20 | 2016-01-20 | Systems and methods for providing information for an on-demand service |
| PCT/CN2016/071470 WO2016116048A1 (en) | 2015-01-20 | 2016-01-20 | Information providing system and method for on-demand service |
| GB1711519.7A GB2550304A (en) | 2015-01-20 | 2016-01-20 | Information providing system and method for on-demand service |
| JP2017538313A JP2018503196A (en) | 2015-01-20 | 2016-01-20 | System and method for providing on-demand service information |
| MYPI2017001065A MY181403A (en) | 2015-01-20 | 2016-01-20 | Systems and method for providing information for an on-demand service |
| AU2016208929A AU2016208929B2 (en) | 2015-01-20 | 2016-01-20 | Systems and methods for providing information for an on-demand service |
| BR112017015589A BR112017015589A8 (en) | 2015-01-20 | 2016-01-20 | SYSTEMS AND METHODS FOR PROVIDING INFORMATION TO AN ON-DEMAND SERVICE |
| US15/544,138 US10769742B2 (en) | 2015-01-20 | 2016-01-20 | Systems and methods for providing information for an on-demand service |
| NZ733863A NZ733863A (en) | 2015-01-20 | 2016-01-20 | Systems and methods for providing information for an on-demand service |
| KR1020207017533A KR102267823B1 (en) | 2015-01-20 | 2016-01-20 | Systems and methods for providing information for an on-demand service |
| CA2974452A CA2974452C (en) | 2015-01-20 | 2016-01-20 | Systems and methods for providing information for an on-demand service |
| PH12017501303A PH12017501303A1 (en) | 2015-01-20 | 2017-07-18 | System and methods for providing information for an on-demand service |
| HK18105003.4A HK1245956A1 (en) | 2015-01-20 | 2018-04-18 | Information providing system and method for on-demand service |
| AU2019279998A AU2019279998A1 (en) | 2015-01-20 | 2019-12-11 | Systems and methods for providing information for an on-demand service |
| US17/013,845 US20200402194A1 (en) | 2015-01-20 | 2020-09-07 | Systems and methods for providing information for an on-demand service |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510295656.5A CN105025437B (en) | 2015-06-02 | 2015-06-02 | A kind of localization method, apparatus and system |
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| CN105025437A CN105025437A (en) | 2015-11-04 |
| CN105025437B true CN105025437B (en) | 2019-01-29 |
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| CN201510295656.5A Active CN105025437B (en) | 2015-01-20 | 2015-06-02 | A kind of localization method, apparatus and system |
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| CN106412808A (en) * | 2016-11-15 | 2017-02-15 | 广东小天才科技有限公司 | Method and device for positioning search |
| EP3542134A4 (en) | 2016-11-21 | 2019-12-04 | Beijing Didi Infinity Technology and Development Co., Ltd. | Systems and methods for performing location-based actions |
| CN108121002A (en) * | 2016-11-28 | 2018-06-05 | 纳恩博（北京）科技有限公司 | A kind of localization method and device |
| CN106971623A (en) * | 2017-04-12 | 2017-07-21 | 桂林航天工业学院 | A kind of road safety early warning system and method |
| CN107948956A (en) * | 2017-11-07 | 2018-04-20 | 北京小米移动软件有限公司 | Localization method and device |
| CN108253975B (en) * | 2017-12-29 | 2022-01-14 | 驭势（上海）汽车科技有限公司 | Method and equipment for establishing map information and positioning vehicle |
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| WO2020077738A1 (en) * | 2018-10-17 | 2020-04-23 | 华为技术有限公司 | Positioning method and apparatus |
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