CN113645691A - Indoor positioning method, server and terminal - Google Patents
Indoor positioning method, server and terminal Download PDFInfo
- Publication number
- CN113645691A CN113645691A CN202111087313.1A CN202111087313A CN113645691A CN 113645691 A CN113645691 A CN 113645691A CN 202111087313 A CN202111087313 A CN 202111087313A CN 113645691 A CN113645691 A CN 113645691A
- Authority
- CN
- China
- Prior art keywords
- terminal
- indoor
- wireless access
- indoor preset
- information
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000005259 measurement Methods 0.000 claims description 14
- 239000006185 dispersion Substances 0.000 claims description 10
- 238000012163 sequencing technique Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 abstract description 12
- 238000004891 communication Methods 0.000 abstract description 6
- 238000012216 screening Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
Images
Classifications
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/29—Geographical information databases
-
- 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
- H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/33—Services specially adapted for particular environments, situations or purposes for indoor environments, e.g. buildings
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Theoretical Computer Science (AREA)
- Remote Sensing (AREA)
- Data Mining & Analysis (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The application discloses an indoor positioning method, a server and a terminal, and relates to the technical field of communication. The method comprises the following steps: acquiring the type of a terminal to be positioned and the received signal strength of the terminal to be positioned; determining physical position information of a terminal to be positioned according to the type of the terminal to be positioned, the received signal strength of the terminal to be positioned and a preset position fingerprint database; the preset position fingerprint database comprises a plurality of position fingerprints, and the position fingerprints are used for representing signal strength information, received by different types of terminals at indoor preset positions, sent by the wireless access points. Because different types of terminals have different radio frequency characteristics, different processing can be performed on the different types of terminals through the type of the terminal to be positioned, and the accuracy of the processing on the terminal is improved; by observing the signal intensity information of different types of terminals at different physical positions, the accuracy of judging the position information of the terminals is greatly improved, and the use experience of a user is improved.
Description
Technical Field
The application relates to the technical field of communication, in particular to an indoor positioning method, a server and a terminal.
Background
Location Based Services (LBS) are also referred to as Location Services, which are used to provide Location query, path planning, navigation, and other Services related to Location information to a user.
Under the condition that it is determined that an indoor terminal (e.g., in an area such as a mall, a hospital, or an airport) needs to be located, signal acquisition needs to be performed on an Access Point (AP) signal in an indoor location technology, however, in the process of performing AP signal acquisition on a terminal, noise signals are easily generated, and different types of terminals have different radio frequency characteristics, so that the accuracy of LBS provided for the terminal is low, and the use experience of a user is reduced.
Disclosure of Invention
Therefore, the application provides an indoor positioning method, a server and a terminal, and solves the problem of how to improve the positioning accuracy of the terminal in an indoor environment.
In order to achieve the above object, a first aspect of the present application provides an indoor positioning method, including: acquiring the type of a terminal to be positioned and the received signal strength of the terminal to be positioned; determining physical position information of a terminal to be positioned according to the type of the terminal to be positioned, the received signal strength of the terminal to be positioned and a preset position fingerprint database; the preset position fingerprint database comprises a plurality of position fingerprints, and the position fingerprints are used for representing signal strength information, received by different types of terminals at indoor preset positions, sent by the wireless access points.
In some specific implementations, before obtaining the terminal type of the terminal to be located and the received signal strength of the terminal to be located, the method further includes:
acquiring coordinate information of a plurality of indoor preset positions;
acquiring sample signal strength information, which is received by a sample terminal at a plurality of indoor preset positions and sent by a wireless access point, according to the terminal type of the sample terminal and the coordinate information of the indoor preset positions;
determining position fingerprints of a plurality of indoor preset positions according to the coordinate information of the plurality of indoor preset positions, the terminal type of the sample terminal and the sample signal intensity information;
and establishing a preset position fingerprint database based on the position fingerprints of a plurality of indoor preset positions.
In some implementations, determining location fingerprints of a plurality of indoor preset locations according to coordinate information of the plurality of indoor preset locations, a terminal type of a sample terminal, and sample signal strength information includes:
determining an average value of signal strength of the wireless access point at an indoor preset position according to M sample signal strengths, wherein the M sample signal strengths are obtained by measuring the wireless access point for M times at the indoor preset position by adopting sample terminals with the same terminal type, and M is an integer greater than or equal to 1;
determining a signal intensity standard deviation of the wireless access point on an indoor preset position according to the signal intensity average value of the wireless access point on the indoor preset position and the M sample signal intensities;
determining a discrete coefficient of the wireless access point on an indoor preset position according to the signal intensity average value and the signal intensity standard deviation of the wireless access point on the indoor preset position;
determining the weight of the wireless access point on the indoor preset position according to the discrete coefficient of the wireless access point on the indoor preset position and the terminal type of the sample terminal;
and determining the position fingerprints of the indoor preset positions according to the coordinate information of the indoor preset positions, the weight of the wireless access point on the indoor preset positions and the signal intensity average value of the wireless access point on the indoor preset positions.
In some implementations, the dispersion factor is proportional to a degree of fluctuation of the signal strength of the wireless access point at the indoor preset position, and the degree of fluctuation of the signal strength of the wireless access point at the indoor preset position is inversely proportional to the stability of the wireless access point.
In some specific implementations, determining physical location information of a terminal to be located according to a terminal type of the terminal to be located, a received signal strength of the terminal to be located, and a preset location fingerprint database includes:
determining the distance between the terminal to be positioned and the indoor preset position according to the weight of the wireless access point on the indoor preset position, the signal intensity average value of the wireless access point on the indoor preset position and the received signal intensity of the terminal to be positioned on the indoor preset position;
and determining the physical position information of the terminal to be positioned according to the distance between the terminal to be positioned and the indoor preset position and the coordinate information of the indoor preset position.
In some specific implementations, determining physical location information of the terminal to be located according to a distance between the terminal to be located and the indoor preset location and coordinate information of the indoor preset location includes:
acquiring to-be-processed distances between K indoor preset positions and a terminal to be positioned, wherein K is an integer greater than or equal to 1;
sequencing the K distances to be processed to obtain a sequencing result;
determining P reference distances and P reference positions according to the sorting result, wherein the reference distances correspond to the reference positions one by one, and P is an integer which is greater than or equal to 1 and less than or equal to K;
determining distance weights of P reference positions according to the P reference distances and the terminal type of the terminal to be positioned;
and determining the physical position information of the terminal to be positioned according to the distance weights of the P reference positions and the coordinate information of the P reference positions.
In order to achieve the above object, a second aspect of the present application provides an indoor positioning method, including: generating a positioning request according to the acquired signal intensity of the current terminal and the terminal type of the current terminal; sending a positioning request to a server so that the server determines the physical position information of the current terminal according to the terminal type of the current terminal, the signal intensity of the current terminal and a preset position fingerprint database; the position fingerprint database comprises a plurality of position fingerprints, and the position fingerprints are used for representing signal strength information, received by different types of terminals at indoor preset positions, sent by the wireless access points.
In order to achieve the above object, a third aspect of the present application provides a server comprising: the first acquisition module is configured to acquire the terminal type of the terminal to be positioned and the received signal strength of the terminal to be positioned; the location information determining module is configured to determine physical location information of the terminal to be located according to the terminal type of the terminal to be located, the received signal strength of the terminal to be located and a preset location fingerprint database, wherein the preset location fingerprint database comprises a plurality of location fingerprints, and the location fingerprints are used for representing signal strength information, received by different types of terminals at indoor preset locations, sent by wireless access points.
In some implementations, the server further includes: the second acquisition module is configured to acquire coordinate information of a plurality of indoor preset positions;
the acquisition module is configured to acquire sample signal strength information, which is received by the sample terminal at a plurality of indoor preset positions and sent by the wireless access point, according to the terminal type of the sample terminal and the coordinate information of the indoor preset positions;
the position fingerprint determining module is configured to determine position fingerprints of the indoor preset positions according to the coordinate information of the indoor preset positions, the terminal types of the sample terminals and the sample signal strength information;
a database establishing module configured to establish a preset location fingerprint database based on location fingerprints of a plurality of indoor preset locations.
In order to achieve the above object, a fourth aspect of the present application provides a terminal comprising: the generating module is configured to generate a positioning request according to the acquired signal intensity of the current terminal and the terminal type of the current terminal; the sending module is configured to send a positioning request to the server so that the server can determine the physical position information of the current terminal according to the terminal type of the current terminal, the signal intensity of the current terminal and a preset position fingerprint database; the position fingerprint database comprises a plurality of position fingerprints, and the position fingerprints are used for representing signal strength information, received by different types of terminals at indoor preset positions, sent by the wireless access points.
According to the indoor positioning method, the server and the terminal, because different types of terminals have different radio frequency characteristics, different processing can be performed on the different types of terminals through the type of the terminal to be positioned, and the accuracy of the processing on the terminal is improved; and the terminal type of the terminal to be positioned and the signal strength of the terminal to be positioned are matched with a plurality of position fingerprints in a preset position fingerprint database to determine the physical position information of the terminal to be positioned, wherein the position fingerprints are used for representing the signal strength information, received by different types of terminals, of the terminal in the indoor preset position and sent by the wireless access point, the signal strength information of the different types of terminals in different physical positions can be further considered, the accuracy of judging the position information of the terminal is greatly improved, and the use experience of a user is improved.
Drawings
The accompanying drawings are included to provide a further understanding of the embodiments of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the principles of the disclosure and not to limit the disclosure. The above and other features and advantages will become more apparent to those skilled in the art by describing in detail exemplary embodiments with reference to the attached drawings.
Fig. 1 is a schematic flowchart illustrating an indoor positioning method according to an embodiment of the present application.
Fig. 2 is a schematic flow chart illustrating an indoor positioning method according to another embodiment of the present application.
Fig. 3 is a flowchart illustrating a method for determining a location fingerprint of an indoor preset location according to an embodiment of the present application.
Fig. 4 is a flowchart illustrating an indoor positioning method according to still another embodiment of the present application.
Fig. 5 is a block diagram illustrating a structure of a server according to an embodiment of the present application.
Fig. 6 shows a block diagram of a terminal according to an embodiment of the present application.
Fig. 7 shows a block diagram of an indoor positioning system according to an embodiment of the present application.
Fig. 8 is a schematic flow chart illustrating a working method of an indoor positioning system according to an embodiment of the present application.
In the drawings:
500: the server 501: first acquisition module
502: the location information determination module 600: terminal device
601: the generation module 602: transmission module
710: sample terminal 720: wireless access equipment
730: the terminal to be positioned 740: positioning server
711: the first sample terminal 712: second sample terminal
71A: the a-th sample terminal 721: first wireless access device
722: second wireless access device 72N: nth wireless access equipment
Detailed Description
The following detailed description of embodiments of the present application will be made with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present application, are given by way of illustration and explanation only, and are not intended to limit the present application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Fig. 1 is a schematic flowchart illustrating an indoor positioning method according to an embodiment of the present application. The indoor positioning method can be applied to a server. As shown in fig. 1, the indoor positioning method can be implemented as follows.
Step S101, acquiring the terminal type of the terminal to be positioned and the received signal strength of the terminal to be positioned.
The terminal type of the terminal to be located may include: any one or more of a smart phone, a tablet computer and a smart wearable device. The terminal types of the terminal to be located may also include terminals of different models generated by different manufacturers, for example, a first type terminal generated by a first manufacturer, a second type terminal generated by a second manufacturer, … …, an a-th type terminal generated by an a-th manufacturer, and the like, where a is an integer greater than or equal to 1.
Different manufacturers have different manufacturing processes, and different types of terminals have different radio frequency characteristics. For example, the strength of the transmission signal corresponding to the first type terminal is different from the strength of the transmission signal corresponding to the second type terminal, and correspondingly, the strength of the reception signal of the first type terminal and the strength of the reception signal of the second type terminal at the same position are also different.
Step S102, determining the physical position information of the terminal to be positioned according to the terminal type of the terminal to be positioned, the received signal strength of the terminal to be positioned and a preset position fingerprint database.
The preset position fingerprint database comprises a plurality of position fingerprints, and the position fingerprints are used for representing signal strength information, received by different types of terminals at indoor preset positions, sent by the wireless access points.
It should be noted that the preset location fingerprint database further includes: the terminal types of the sample terminals of different types, the received signal strength corresponding to each sample terminal, and a plurality of indoor preset positions.
For example, the terminal type of the terminal to be located may be matched with the terminal type of the sample terminal in the preset location fingerprint database to obtain a first sample terminal (e.g., the terminal type of the first sample terminal is the same as or similar to the terminal type of the terminal to be located); secondly, the received signal strength of the terminal to be positioned is matched with the received signal strength of the first sample terminal at a plurality of indoor preset positions again, and a plurality of pieces of preliminary screening position information can be obtained through screening; and further processing the position information based on a plurality of preliminary screening to determine the physical position information of the terminal to be positioned, so that the physical position information of the terminal to be positioned can be ensured to be more accurate.
In this embodiment, different processing can be performed for different types of terminals by the terminal type of the terminal to be positioned, different radio frequency characteristics of the different types of terminals can be distinguished, and accuracy of processing the terminal is improved; and the terminal type of the terminal to be positioned and the signal strength of the terminal to be positioned are matched with a plurality of position fingerprints in a preset position fingerprint database to determine the physical position information of the terminal to be positioned, wherein the position fingerprints are used for representing the signal strength information, received by different types of terminals, of the terminal in the indoor preset position and sent by the wireless access point, the signal strength information of the different types of terminals in different physical positions can be further considered, the accuracy of judging the position information of the terminal is greatly improved, and the use experience of a user is improved.
Fig. 2 is a schematic flow chart illustrating an indoor positioning method according to another embodiment of the present application. The indoor positioning method can be applied to a server. As shown in fig. 2, the indoor positioning method can be implemented as follows.
Step S201, obtaining coordinate information of a plurality of indoor preset positions.
The coordinate information may include an abscissa and an ordinate, and the coordinate information is determined by an indoor coordinate system established in advance based on a preset positioning area in the room.
For example, in a preset positioning area in a room (e.g., a mall, an office building, etc.), reference points (i.e., indoor preset positions) are set at equidistant intervals, an indoor coordinate system is established with an indoor east-west direction as a horizontal axis and a north-south direction as a vertical axis, and coordinate information of each reference point is recorded as (horizontal axis, vertical axis). Therefore, the physical position of the indoor preset position is accurately determined, and subsequent positioning of the equipment is facilitated.
Step S202, collecting sample signal strength information sent by the wireless access points and received by the sample terminal at a plurality of indoor preset positions according to the terminal type of the sample terminal and the coordinate information of the indoor preset positions.
The method includes the steps that the strength of sample signals sent by a plurality of wireless Access Points (APs) can be measured by a plurality of sample terminals at each indoor preset position, and the strength information of the sample signals based on each indoor preset position is obtained.
For example, the signal strength of m samples obtained by measuring the nth AP signal source on the kth reference point by a plurality of sample terminals is acquired. Wherein K, m and n are both integers greater than or equal to 1.
Step S203, determining the position fingerprints of the indoor preset positions according to the coordinate information of the indoor preset positions, the terminal types of the sample terminals and the sample signal strength information.
The location fingerprint of each indoor preset location may include any one or more of coordinate information of the indoor preset location, terminal types of the plurality of sample terminals, and sample signal strength information.
The position fingerprint of each indoor preset position is represented through multidimensional information, the communication condition of the sample terminal on the indoor preset position can be comprehensively measured, the terminal to be positioned can be quickly and accurately positioned based on the position fingerprint, and the use experience of the terminal is improved.
Step S204, a preset position fingerprint database is established based on the position fingerprints of a plurality of indoor preset positions.
The preset location fingerprint database comprises location fingerprints of a plurality of indoor preset locations, and each location fingerprint can cover multi-dimensional characteristic information (for example, physical location information of the indoor preset locations, communication conditions of different types of sample terminals on the indoor preset locations, and the like).
Step S205, the terminal type of the terminal to be positioned and the received signal strength of the terminal to be positioned are obtained.
Step S206, determining the physical position information of the terminal to be positioned according to the terminal type of the terminal to be positioned, the received signal strength of the terminal to be positioned and a preset position fingerprint database.
It should be noted that steps S205 to S206 in this embodiment are the same as steps S101 to S102 in the previous embodiment, and are not repeated herein.
In the embodiment, sample signal strength information sent by the wireless access point and received by the sample terminal at a plurality of indoor preset positions is acquired according to the terminal type of the sample terminal and the coordinate information of the indoor preset positions, so that the sample signal strength information sent by the wireless access point and received by the sample terminal at the plurality of indoor preset positions can be preprocessed; determining position fingerprints of a plurality of indoor preset positions according to coordinate information of the plurality of indoor preset positions, terminal types of sample terminals and sample signal strength information, so that the position fingerprints can reflect physical position information and communication information of the indoor preset positions in a multi-dimensional manner; the preset position fingerprint database is established based on the position fingerprints of the indoor preset positions, so that the preset position fingerprint database can comprise multi-dimensional information representing the indoor preset positions, and subsequent positioning processing of the terminal to be positioned is facilitated. Moreover, the terminal type of the terminal to be positioned can be processed differently aiming at different types of terminals, different radio frequency characteristics of the terminals of different types can be distinguished, and the accuracy of processing the terminal is improved; the terminal type of the terminal to be positioned and the signal strength of the terminal to be positioned are matched with the position fingerprints in the preset position fingerprint database to determine the physical position information of the terminal to be positioned, wherein the position fingerprints are used for representing the signal strength information, received by the different types of terminals, of the terminal in the indoor preset position and sent by the wireless access point, the signal strength information of the different types of terminals in different physical positions can be further considered, the accuracy of judging the position information of the terminal is greatly improved, and the use experience of a user is improved.
The embodiment of the application provides another possible implementation mode. Fig. 3 is a flowchart illustrating a method for determining a location fingerprint of an indoor preset location according to an embodiment of the present application.
As shown in fig. 3, the method for determining the location fingerprint of the indoor preset location is implemented as follows.
Step S301, determining the average value of the signal intensity of the wireless access point at the indoor preset position according to the M sample signal intensities.
The M sample signal intensities are signal intensities obtained by measuring the wireless access point for M times at an indoor preset position by adopting sample terminals with the same terminal type, and M is an integer greater than or equal to 1.
It should be noted that the wireless access point is very susceptible to interference from products in different frequency bands, so that the m measurement values obtained by measurement are different. For example, the frequency band of a commonly used wireless router is a 2.4GHz frequency band, and a frequency band used by a fifth Generation Mobile communication network (5G, 5G) is similar to a frequency band used by WiFi, which easily causes a deviation between measured values obtained by measurement, so that m measurements can be performed on one wireless access point for each reference point, and the signal quality of the AP signal source at the reference point can be comprehensively determined, so as to improve the accuracy of the signal quality.
For example, the M sample signal strengths may be summed to obtain a sum result; and then taking the quotient of the summation result and the M as a signal strength average value to obtain an average signal strength which is used for representing the average value of the sample signal strengths, sent by the wireless access points, received by the sample terminals with the same terminal type at the indoor preset position.
Step S302, determining a standard deviation of the signal strength of the wireless access point at the indoor preset position according to the average value of the signal strength of the wireless access point at the indoor preset position and the signal strength of the M samples.
The standard deviation is used for feeding back the discrete degree of the M sample signal strengths of the wireless access point at the indoor preset position.
For example, the difference between the signal strength of each sample and the average of the signal strengths is calculated; performing square operation on the M difference values to obtain M square values; then, the sum of the M squared values is calculated, the quotient of the sum and M is calculated, and finally the arithmetic square root is calculated for the quotient to determine the signal strength standard deviation.
Step S303, determining a discrete coefficient of the wireless access point at the indoor preset position according to the signal intensity average value and the signal intensity standard deviation of the wireless access point at the indoor preset position.
The discrete coefficient is in direct proportion to the fluctuation degree of the signal intensity of the wireless access point on the indoor preset position, and the fluctuation degree of the signal intensity of the wireless access point on the indoor preset position is in inverse proportion to the stability of the wireless access point.
It should be noted that, since the average values of the signal strengths obtained by measuring each wireless access point for multiple times are different, the dispersion degree of the sample data of each wireless access point can be better reflected by using the dispersion coefficient corresponding to each wireless access point. That is, the larger the dispersion coefficient is, the larger the fluctuation of the corresponding signal strength value is, and the weaker the stability is; the smaller the discrete coefficient is, the smaller the fluctuation of the corresponding signal intensity value of the wireless access point is, and the stronger the stability is.
Step S304, determining the weight of the wireless access point on the indoor preset position according to the discrete coefficient of the wireless access point on the indoor preset position and the terminal type of the sample terminal.
The weight of the wireless access point on the indoor preset position can represent the discrete condition of the wireless access point on the indoor preset position and the radio frequency characteristics corresponding to different types of sample terminals.
For example, the inverse of the discrete coefficient may be used to calculate the weight of the wireless access point at the indoor preset position, so that the wireless access point with a large discrete coefficient has a smaller corresponding weight, thereby reducing the error caused by the instability of the wireless access point on the final positioning result and improving the accuracy of the positioning result.
In addition, by increasing the terminal types of the sample terminals, different radio frequency characteristics of different types of sample terminals can be reflected, so that the accuracy of the weight of the line access point on the indoor preset position is improved.
Step S305, determining the position fingerprints of the indoor preset positions according to the coordinate information of the indoor preset positions, the weight of the wireless access point on the indoor preset positions and the average value of the signal strength of the wireless access point on the indoor preset positions.
Wherein, the position fingerprint of every indoor preset position includes: and any one or more of the coordinate information of the indoor preset position, the weight of the wireless access point on the indoor preset position and the average value of the signal strength of the wireless access point on the indoor preset position.
The signal intensity can be averaged by adopting the signal intensity average value of the wireless access point on the indoor preset position, and the communication characteristic of the wireless access point on the indoor preset position can be reflected; and based on the weight of the wireless access point on the indoor preset position, the error of the final positioning result caused by the instability of the wireless access point can be reduced, and the accuracy of the positioning result is improved.
In some specific implementations, the determining of the physical location information of the terminal to be located in step S102 or step S206 according to the terminal type of the terminal to be located, the received signal strength of the terminal to be located, and the preset location fingerprint database may be implemented as follows.
Determining the distance between the terminal to be positioned and the indoor preset position according to the weight of the wireless access point on the indoor preset position, the signal intensity average value of the wireless access point on the indoor preset position and the received signal intensity of the terminal to be positioned on the indoor preset position; and determining the physical position information of the terminal to be positioned according to the distance between the terminal to be positioned and the indoor preset position and the coordinate information of the indoor preset position.
The method comprises the steps of calculating the discrete degree of a wireless access point on a preset indoor preset position based on the average signal intensity of the wireless access point on the preset indoor position and the received signal intensity of a terminal to be positioned on the preset indoor position, and performing weighted operation on the distance between the terminal to be positioned and the preset indoor position based on the discrete degree and the weight of the wireless access point on the preset indoor position to obtain the weighted distance, so that the weighted distance can represent the stability of the signal intensity of the wireless access point on the preset indoor position.
And the weighted distance is compared with the coordinate information of the indoor preset position, so that more accurate physical position information of the terminal to be positioned can be obtained, the positioning accuracy of the terminal to be positioned is improved, and the use experience of a user is improved.
In some specific implementations, determining physical location information of the terminal to be located according to a distance between the terminal to be located and the indoor preset location and coordinate information of the indoor preset location includes: acquiring to-be-processed distances between K indoor preset positions and a terminal to be positioned; sequencing the K distances to be processed to obtain a sequencing result; determining P reference distances and P reference positions according to the sorting result, wherein the reference distances correspond to the reference positions one by one; determining distance weights of P reference positions according to the P reference distances and the terminal type of the terminal to be positioned; and determining the physical position information of the terminal to be positioned according to the distance weights of the P reference positions and the coordinate information of the P reference positions.
Wherein K is an integer greater than or equal to 1, P is an integer greater than or equal to 1 and less than or equal to K.
It should be noted that the sorting result may be a result obtained by sorting the K to-be-processed distances in an ascending order, or may be a result obtained by sorting the K to-be-processed distances in a descending order. And the P reference distances are the distances with the minimum value among the K distances to be processed, so that the obtained P reference positions are closer to the physical position information of the terminal to be positioned, and the physical position information of the terminal to be positioned is accurately estimated.
Fig. 4 is a flowchart illustrating an indoor positioning method according to still another embodiment of the present application. The indoor positioning method can be applied to the terminal. As shown in fig. 4, the indoor positioning method can be implemented as follows.
Step S401, a positioning request is generated according to the acquired signal intensity of the current terminal and the terminal type of the current terminal.
The terminal type of the current terminal may include: any one or more of a smart phone, a tablet computer and a smart wearable device. The terminal types of the current terminal may further include different models of terminals generated by different manufacturers, for example, a first type of terminal generated by a first manufacturer, a second type of terminal generated by a second manufacturer, … …, an a-th type of terminal generated by an a-th manufacturer, and the like, where a is an integer greater than or equal to 1.
Different manufacturers have different manufacturing processes, and different types of terminals have different radio frequency characteristics. For example, the strength of the transmission signal corresponding to the first type terminal is different from the strength of the transmission signal corresponding to the second type terminal, and correspondingly, the strength of the reception signal of the first type terminal and the strength of the reception signal of the second type terminal at the same position are also different.
Wherein the positioning request comprises: the signal intensity of the current terminal and/or the terminal type of the current terminal; the location request may also include an identification of the current terminal (e.g., a device identification or a cell phone number of the current terminal, etc.) to uniquely determine the current terminal.
Step S402, sending a positioning request to a server.
And under the condition that the server receives the positioning request, the server determines the physical position information of the current terminal according to the terminal type of the current terminal, the signal intensity of the current terminal and a preset position fingerprint database.
The preset position fingerprint database comprises a plurality of position fingerprints, and the position fingerprints are used for representing signal strength information, received by different types of terminals at indoor preset positions, sent by the wireless access points.
It should be noted that the preset location fingerprint database further includes: the terminal types of the sample terminals of different types, the received signal strength corresponding to each sample terminal, and a plurality of indoor preset positions.
For example, the terminal type of the current terminal may be matched with the terminal type of the sample terminal in the preset location fingerprint database to obtain a first sample terminal (e.g., the terminal type of the first sample terminal is the same as or similar to the terminal type of the current terminal); then, the received signal strength of the current terminal is matched with the received signal strength of the first sample terminal at a plurality of indoor preset positions again, and a plurality of pieces of preliminary screening position information can be obtained through screening; and further processing the position information based on a plurality of preliminary screening positions to determine the physical position information of the current terminal, so that the physical position information of the current terminal can be ensured to be more accurate.
In this embodiment, a positioning request is generated according to the acquired signal strength of the current terminal and the terminal type of the current terminal, so that the request parameter of the current terminal can be reflected, and the positioning requirement of the current terminal can be refined; the method comprises the steps of sending a positioning request to a server so that the server can combine the positioning requirement and relevant parameters of a current terminal, matching the terminal type of the current terminal, the signal intensity of the current terminal and a plurality of position fingerprints in a preset position fingerprint database, quickly and accurately obtaining the physical position information of the current terminal, improving the positioning accuracy of the current terminal, ensuring that the current terminal can obtain expected information based on the physical position information, and improving the use experience of a user.
Fig. 5 is a block diagram illustrating a structure of a server according to an embodiment of the present application. As shown in fig. 5, the server 500 includes the following modules.
A first obtaining module 501, configured to obtain a terminal type of a terminal to be positioned and a received signal strength of the terminal to be positioned; the location information determining module 502 is configured to determine physical location information of a terminal to be located according to a terminal type of the terminal to be located, a received signal strength of the terminal to be located, and a preset location fingerprint database, where the preset location fingerprint database includes a plurality of location fingerprints, and the location fingerprints are used for representing signal strength information, which is received by different types of terminals at indoor preset locations and is sent by wireless access points.
In some implementations, the server 500 further includes: the second acquisition module is configured to acquire coordinate information of a plurality of indoor preset positions; the acquisition module is configured to acquire sample signal strength information, which is received by the sample terminal at a plurality of indoor preset positions and sent by the wireless access point, according to the terminal type of the sample terminal and the coordinate information of the indoor preset positions; the position fingerprint determining module is configured to determine position fingerprints of the indoor preset positions according to the coordinate information of the indoor preset positions, the terminal types of the sample terminals and the sample signal strength information; a database establishing module configured to establish a preset location fingerprint database based on location fingerprints of a plurality of indoor preset locations.
In some specific implementations, the location fingerprint determining module is specifically configured to determine an average value of signal strengths of the wireless access point at the indoor preset location according to M sample signal strengths, where the M sample signal strengths are signal strengths obtained by performing M measurements on the wireless access point at the indoor preset location using sample terminals of the same terminal type, and M is an integer greater than or equal to 1; determining a signal intensity standard deviation of the wireless access point on an indoor preset position according to the signal intensity average value of the wireless access point on the indoor preset position and the M sample signal intensities; determining a discrete coefficient of the wireless access point on an indoor preset position according to the signal intensity average value and the signal intensity standard deviation of the wireless access point on the indoor preset position; determining the weight of the wireless access point on the indoor preset position according to the discrete coefficient of the wireless access point on the indoor preset position and the terminal type of the sample terminal; and determining the position fingerprints of the indoor preset positions according to the coordinate information of the indoor preset positions, the weight of the wireless access point on the indoor preset positions and the signal intensity average value of the wireless access point on the indoor preset positions.
In some implementations, the dispersion factor is proportional to a degree of fluctuation of the signal strength of the wireless access point at the indoor preset position, and the degree of fluctuation of the signal strength of the wireless access point at the indoor preset position is inversely proportional to the stability of the wireless access point.
In some implementations, the location information determining module 502 is specifically configured to: determining the distance between the terminal to be positioned and the indoor preset position according to the weight of the wireless access point on the indoor preset position, the signal intensity average value of the wireless access point on the indoor preset position and the received signal intensity of the terminal to be positioned on the indoor preset position; and determining the physical position information of the terminal to be positioned according to the distance between the terminal to be positioned and the indoor preset position and the coordinate information of the indoor preset position.
In some specific implementations, determining physical location information of the terminal to be located according to a distance between the terminal to be located and the indoor preset location and coordinate information of the indoor preset location includes: acquiring to-be-processed distances between N indoor preset positions and a terminal to be positioned, wherein N is an integer greater than or equal to 1; sequencing the N distances to be processed to obtain a sequencing result; determining K reference distances and K reference positions according to the sorting result, wherein the reference distances correspond to the reference positions one by one, and K is an integer which is greater than or equal to 1 and less than or equal to N; determining distance weights of K reference positions according to the K reference distances and the terminal type of the terminal to be positioned; and determining the physical position information of the terminal to be positioned according to the distance weights of the K reference positions and the coordinate information of the K reference positions.
In the embodiment, different processing can be performed on different types of terminals through the acquisition module according to the terminal type of the terminal to be positioned, different radio frequency characteristics of the different types of terminals can be distinguished, and the accuracy of processing the terminal is improved; and the terminal type of the terminal to be positioned and the signal strength of the terminal to be positioned are matched with a plurality of position fingerprints in a preset position fingerprint database by using a position information determining module so as to determine the physical position information of the terminal to be positioned, wherein the position fingerprints are used for representing the signal strength information, received by different types of terminals at indoor preset positions, sent by wireless access points, so that the signal strength information of the different types of terminals at different physical positions can be further investigated, the accuracy of judging the position information of the terminal is greatly improved, and the use experience of a user is improved.
Fig. 6 shows a block diagram of a terminal according to an embodiment of the present application. As shown in fig. 6, the terminal 600 includes the following modules.
A generating module 601, configured to generate a positioning request according to the obtained signal strength of the current terminal and the terminal type of the current terminal; a sending module 602 configured to send a positioning request to a server, so that the server determines physical location information of a current terminal according to a terminal type of the current terminal, a signal strength of the current terminal, and a preset location fingerprint database; the position fingerprint database comprises a plurality of position fingerprints, and the position fingerprints are used for representing signal strength information, received by different types of terminals at indoor preset positions, sent by the wireless access points.
In the embodiment, the positioning request is generated by the generation module according to the acquired signal intensity of the current terminal and the terminal type of the current terminal, so that the request parameter of the current terminal can be reflected, and the positioning requirement of the current terminal can be refined; the sending module is used for sending the positioning request to the server, so that the server can combine the positioning requirement and relevant parameters of the current terminal, match the terminal type of the current terminal, the signal intensity of the current terminal and a plurality of position fingerprints in the preset position fingerprint database, quickly and accurately obtain the physical position information of the current terminal, improve the positioning accuracy of the current terminal, ensure that the current terminal can obtain expected information based on the physical position information, and improve the use experience of a user.
It should be noted that each module referred to in this embodiment is a logical module, and in practical applications, one logical unit may be one physical unit, may be a part of one physical unit, and may be implemented by a combination of multiple physical units. In addition, in order to highlight the innovative part of the present application, a unit that is not so closely related to solving the technical problem proposed by the present application is not introduced in the present embodiment, but it does not indicate that no other unit exists in the present embodiment.
Fig. 7 shows a block diagram of an indoor positioning system according to an embodiment of the present application. As shown in fig. 7, the indoor positioning system includes the following devices.
A sample terminal 710, a wireless access device 720, a terminal to be located 730, and a location server 740.
Where sample termination 710 includes a first sample termination 711, a second sample termination 712, … …, an a-th sample termination 71A, etc., where a is an integer greater than or equal to 1. The wireless access device 720 includes a first wireless access device 721, a second wireless access device 722, … …, an nth wireless access device 72N, and so on, where N is an integer greater than or equal to 1, where the wireless access device 720 may further include: and an AP signal source.
Fig. 8 is a schematic flow chart illustrating a working method of an indoor positioning system according to an embodiment of the present application. As shown in fig. 8, the working method of the indoor positioning system includes the following steps.
In step S801, the positioning server 740 establishes a preset location fingerprint database.
Wherein, the preset location fingerprint database includes: the location fingerprint of a plurality of indoor preset locations, the location fingerprint of each indoor preset location may include: the indoor coordinate information of presetting the position, the terminal type of a plurality of sample terminals and the sample signal intensity information that corresponds with the terminal type of sample terminal, sample signal intensity information includes: and the AP signal source corresponds to the signal strength value.
In some implementations, the location fingerprint of each indoor preset location may be obtained as follows:
in a preset positioning area of an indoor (e.g., a mall, an office building, etc.), reference points (i.e., indoor preset positions) are set at equal intervals, an indoor coordinate system is established with an indoor east-west direction as an x-axis and a south-north direction as a y-axis, and a physical position coordinate (x) of each reference point is recordedi，yi). N AP signal sources are selected, and m measurements are performed on each AP signal source at each reference point using a plurality of different types of sample terminals (e.g., first sample terminal 711, second sample terminals 712, … …, a-th sample terminal 71A, etc.) to obtain an m × n matrix RS corresponding to the reference pointm*nIt can be expressed by formula (1):
wherein,
and the m-th measured value (namely, the signal strength value corresponding to the nth AP signal source) obtained by the sample terminal measuring the nth AP signal source on the reference point is represented, x and y represent real numbers, and m and n both represent integers greater than or equal to 1. i represents an integer of 1 or more and n or less.
It should be noted that, signals sent by n AP signal sources may be received at each reference point, the above measurement and signal strength value acquisition may be performed for each reference point set in the preset positioning area, and different types of sample terminals may be used to perform the data acquisition. A matrix RS of m x n at a plurality of reference points for a plurality of different types of sample terminals can be obtainedm*n. The terminal type of the sample terminal, the coordinate information corresponding to the reference point and the matrix RS of m x nm*nAs the location fingerprints of the reference points, and establishes a preset location fingerprint database based on the location fingerprints of the plurality of reference points.
In some implementations, the location fingerprint can further include: according to the matrix RSm*nThe discrete coefficient Vi corresponding to the ith AP signal source obtained by calculating the signal intensity value in the (I) is obtained.
The discrete coefficient Vi corresponding to the ith AP signal source may be obtained by calculation using formula (2):
wherein, deltaiRepresents the standard deviation, avr, of the m measurements of the ith AP signal source at the Kth reference pointiRepresents the average of m measurements of the ith AP signal source at the Kth reference point, where K represents an integer greater than or equal to 1.
It should be noted that, the average value avr of m measured values measured for each AP signal sourceiDifferent, the dispersion degree of the sample data of each AP signal source can be better reflected by using the dispersion coefficient Vi corresponding to each AP signal source. That is, the larger the dispersion coefficient is, the larger the fluctuation of the corresponding signal intensity value is, and the weaker the stability is; the smaller the dispersion coefficientThe smaller the fluctuation of the corresponding signal intensity value of the AP signal source is, the stronger the stability is.
For example, the standard deviation δ of m measurements of the ith AP signal source at the Kth reference pointiCan be obtained by calculation according to the formula (3).
Wherein,
the measured value of the 1 st time obtained by the first sample terminal measuring the 1 st AP signal source on the Kth reference point is represented;
and the m-th measured value obtained by the first sample terminal measuring the 1 st AP signal source on the Kth reference point is shown.
It should be noted that the AP signal source is easily interfered by products in different frequency bands, so that the m-time measurement values obtained by measurement are different. For example, the frequency band of a commonly used wireless router is a 2.4GHz frequency band, and the frequency band used by 5G is similar to the frequency band used by WiFi, which easily causes deviation between measured values obtained by measurement, so that m measured values obtained by measuring one AP signal source for m times for each reference point are required to comprehensively judge the signal quality of the AP signal source at the reference point, so as to improve the accuracy of the signal quality.
Average value avr of m measured values of ith AP signal source on Kth reference pointiCan be calculated by using the formula (4):
in some implementations, the location fingerprint can further include: weighting factor W corresponding to ith AP signal sourcei。
Corresponding to ith AP signal sourceWeight factor WiCan be calculated by using the formula (5):
the tip represents a terminal type of the sample terminal (e.g., sample terminals of different brands, etc.), and different radio frequency characteristics of different types of sample terminals can be represented by the terminal type of the sample terminal, so as to improve accuracy of the weighting factor.
The weight calculation may be performed using the reciprocal of the discrete coefficient Vi, and the AP signal source having a larger discrete coefficient Vi may be used to calculate the weight corresponding to the weight factor WiAnd the method has the advantages of reducing errors caused by the instability of the AP signal source to the final positioning result and improving the accuracy of the positioning result.
In step S802, the terminal 730 to be positioned sends a positioning request to the positioning server 740.
Wherein the positioning request comprises: the terminal type of the terminal 730 to be located and the received signal strength of the terminal 730 to be located.
In step S803, the positioning server 740 determines the physical location information of the terminal 730 to be positioned according to the received terminal type of the terminal 730 to be positioned, the received signal strength of the terminal 730 to be positioned, and the preset location fingerprint database.
The received signal strength of the terminal 730 to be positioned is matched with the signal strength values corresponding to the AP signal sources in the preset position fingerprint database, the terminal type of the terminal 730 to be positioned is matched with the terminal types of the sample terminals in the preset position fingerprint database, a matching result is obtained, and the physical position information of the terminal 730 to be positioned is determined based on the matching result.
In some implementations, the coefficient may also be based on a discrete coefficient ViAnd the terminal type tip of the sample terminal is calculated using equation (5) to obtain the weight value WiFurther according to the weighted value WiDetermining weighted Euclidean distances between all reference points and the terminal 730 to be positioned, e.g. by calculation using equation (6)Obtaining a weighted Euclidean distance D between the Kth reference point and the terminal 730 to be positionedk。
Wherein,
the measured value of the jth time obtained by the sample terminal measuring the 1 st AP signal source on the Kth reference point is represented;
and the j-th measured value obtained by the sample terminal measuring the nth AP signal source on the Kth reference point is represented. W1Represents the weight value, W, of the sample terminal corresponding to the 1 st AP signal source at the Kth reference pointnIndicating the weighting value corresponding to the nth AP signal source at the kth reference point for the sample terminal. avr1The average value obtained by measuring the 1 st AP signal source on the Kth reference point by the sample terminal for multiple times is represented; avrnAnd the average value obtained by the sample terminal measuring the nth AP signal source for multiple times on the Kth reference point is shown.
Then, the weighted Euclidean distances D between the K reference points and the terminal 730 to be positionedkAnd performing ascending arrangement (namely, arrangement from small to large) to obtain an ordering result, and screening and obtaining P reference points with the smallest weighted Euclidean distance according to the ordering result, wherein P is an integer which is greater than or equal to 1 and is less than or equal to K.
Respectively calculating the distance weight factor of each reference point in the P reference points by adopting a formula (7)
Where Dj represents a weighted euclidean distance between the finally selected P reference points and the terminal 730 to be located, and j is an integer greater than or equal to 1 and less than or equal to P.
Finally, the physical location information (x, y) of the terminal 730 to be positioned is obtained by calculation using the formula (8).
Where x represents the abscissa of the terminal 730 to be positioned and y represents the ordinate of the terminal 730 to be positioned.
In step S804, the positioning server 740 sends the obtained physical location information (x, y) of the terminal 730 to be positioned to the terminal 730 to be positioned.
In this embodiment, an indoor coordinate system is established in an indoor environment, the physical location coordinate of each reference point is recorded, a preset location fingerprint database is established according to the m-th measured value obtained by measuring n AP signal sources on each reference point by different types of sample terminals, and the physical location information of the terminal to be located is determined by combining the terminal type of the sample terminal and the distance weight factor of each reference point obtained by calculating each measured value, so that the accuracy of determining the physical location information of the terminal to be located is improved, and the use experience of a user is improved.
It is to be understood that the above embodiments are merely exemplary embodiments that are employed to illustrate the principles of the present application, and that the present application is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the application, and these changes and modifications are to be considered as the scope of the application.
Claims (10)
1. An indoor positioning method, characterized in that the method comprises:
acquiring the type of a terminal to be positioned and the received signal strength of the terminal to be positioned;
determining physical position information of the terminal to be positioned according to the terminal type of the terminal to be positioned, the received signal strength of the terminal to be positioned and a preset position fingerprint database;
the preset position fingerprint database comprises a plurality of position fingerprints, and the position fingerprints are used for representing signal strength information, received by different types of terminals at indoor preset positions, sent by wireless access points.
2. The method of claim 1, wherein before the obtaining the terminal type of the terminal to be positioned and the received signal strength of the terminal to be positioned, the method further comprises:
acquiring coordinate information of a plurality of indoor preset positions;
acquiring sample signal strength information, which is received by a sample terminal at a plurality of indoor preset positions and sent by the wireless access point, according to the terminal type of the sample terminal and the coordinate information of the indoor preset positions;
determining position fingerprints of a plurality of indoor preset positions according to the coordinate information of the indoor preset positions, the terminal type of the sample terminal and the sample signal strength information;
and establishing the preset position fingerprint database based on the position fingerprints of the plurality of indoor preset positions.
3. The method according to claim 2, wherein the determining the location fingerprints of the plurality of indoor preset locations according to the coordinate information of the plurality of indoor preset locations, the terminal type of the sample terminal and the sample signal strength information comprises:
determining a signal intensity average value of the wireless access point at the indoor preset position according to the M sample signal intensities, wherein the M sample signal intensities are signal intensities obtained by performing M times of measurement on the wireless access point at the indoor preset position by adopting sample terminals with the same terminal type, and M is an integer greater than or equal to 1;
determining a signal intensity standard deviation of the wireless access point on the indoor preset position according to the signal intensity average value of the wireless access point on the indoor preset position and the M sample signal intensities;
determining a discrete coefficient of the wireless access point on the indoor preset position according to the signal intensity average value and the signal intensity standard deviation of the wireless access point on the indoor preset position;
determining the weight of the wireless access point on the indoor preset position according to the discrete coefficient of the wireless access point on the indoor preset position and the terminal type of the sample terminal;
and determining the position fingerprints of the indoor preset positions according to the coordinate information of the indoor preset positions, the weight of the wireless access point on the indoor preset positions and the signal intensity average value of the wireless access point on the indoor preset positions.
4. The method of claim 3, wherein the dispersion factor is proportional to a fluctuation degree of the signal strength of the wireless access point at the indoor preset position, and wherein the fluctuation degree of the signal strength of the wireless access point at the indoor preset position is inversely proportional to a stability of the wireless access point.
5. The method according to claim 3, wherein the determining the physical location information of the terminal to be located according to the terminal type of the terminal to be located, the received signal strength of the terminal to be located, and a preset location fingerprint database comprises:
determining the distance between the terminal to be positioned and the indoor preset position according to the weight of the wireless access point on the indoor preset position, the average value of the signal intensity of the wireless access point on the indoor preset position and the received signal intensity of the terminal to be positioned on the indoor preset position;
and determining the physical position information of the terminal to be positioned according to the distance between the terminal to be positioned and the indoor preset position and the coordinate information of the indoor preset position.
6. The method according to claim 5, wherein the determining the physical location information of the terminal to be positioned according to the distance between the terminal to be positioned and the indoor preset location and the coordinate information of the indoor preset location comprises:
acquiring distances to be processed between K indoor preset positions and the terminal to be positioned, wherein K is an integer greater than or equal to 1;
sequencing the K distances to be processed to obtain a sequencing result;
determining P reference distances and P reference positions according to the sorting result, wherein the reference distances correspond to the reference positions one by one, and P is an integer which is greater than or equal to 1 and less than or equal to K;
determining distance weights of the P reference positions according to the P reference distances and the terminal type of the terminal to be positioned;
and determining the physical position information of the terminal to be positioned according to the distance weights of the P reference positions and the coordinate information of the P reference positions.
7. An indoor positioning method, characterized in that the method comprises:
generating a positioning request according to the acquired signal intensity of the current terminal and the terminal type of the current terminal;
sending the positioning request to a server so that the server determines physical position information of the current terminal according to the terminal type of the current terminal, the signal intensity of the current terminal and a preset position fingerprint database; the location fingerprint database comprises a plurality of location fingerprints, and the location fingerprints are used for representing signal strength information, received by different types of terminals at indoor preset locations, sent by wireless access points.
8. A server, comprising:
the terminal positioning system comprises a first acquisition module, a second acquisition module and a positioning module, wherein the first acquisition module is configured to acquire the terminal type of a terminal to be positioned and the received signal strength of the terminal to be positioned;
the location information determining module is configured to determine physical location information of the terminal to be located according to the terminal type of the terminal to be located, the received signal strength of the terminal to be located and a preset location fingerprint database, wherein the preset location fingerprint database comprises a plurality of location fingerprints, and the location fingerprints are used for representing signal strength information, received by different types of terminals at indoor preset locations, sent by wireless access points.
9. The server according to claim 8, further comprising:
the second acquisition module is configured to acquire coordinate information of a plurality of indoor preset positions;
the acquisition module is configured to acquire sample signal strength information, which is received by the sample terminal at a plurality of indoor preset positions and sent by the wireless access point, according to the terminal type of the sample terminal and the coordinate information of the indoor preset positions;
a location fingerprint determination module configured to determine location fingerprints of a plurality of indoor preset locations according to coordinate information of the plurality of indoor preset locations, a terminal type of the sample terminal, and the sample signal strength information;
a database establishing module configured to establish the preset location fingerprint database based on location fingerprints of a plurality of the indoor preset locations.
10. A terminal, comprising:
the generating module is configured to generate a positioning request according to the acquired signal intensity of the current terminal and the terminal type of the current terminal;
a sending module configured to send the positioning request to a server, so that the server determines physical location information of the current terminal according to a terminal type of the current terminal, a signal strength of the current terminal, and a preset location fingerprint database; the location fingerprint database comprises a plurality of location fingerprints, and the location fingerprints are used for representing signal strength information, received by different types of terminals at indoor preset locations, sent by wireless access points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111087313.1A CN113645691A (en) | 2021-09-16 | 2021-09-16 | Indoor positioning method, server and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111087313.1A CN113645691A (en) | 2021-09-16 | 2021-09-16 | Indoor positioning method, server and terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113645691A true CN113645691A (en) | 2021-11-12 |
Family
ID=78425924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111087313.1A Pending CN113645691A (en) | 2021-09-16 | 2021-09-16 | Indoor positioning method, server and terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113645691A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004095790A1 (en) * | 2003-03-28 | 2004-11-04 | University Of Maryland | Method and system for determining user location in a wireless communication network |
| CN107333238A (en) * | 2017-07-03 | 2017-11-07 | 杭州电子科技大学 | A kind of indoor fingerprint method for rapidly positioning based on support vector regression |
| CN109936820A (en) * | 2017-12-15 | 2019-06-25 | 中国移动通信集团山东有限公司 | A kind of user terminal localization method and device |
| CN111225334A (en) * | 2018-11-23 | 2020-06-02 | 中国移动通信集团有限公司 | Positioning method, terminal and computer readable storage medium |
| CN112235724A (en) * | 2020-10-12 | 2021-01-15 | 腾讯科技（深圳）有限公司 | Indoor positioning method and device, electronic equipment and computer readable storage medium |
| CN112714493A (en) * | 2020-12-29 | 2021-04-27 | 北京工业大学 | Object position positioning method and positioning system |
-
2021
- 2021-09-16 CN CN202111087313.1A patent/CN113645691A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004095790A1 (en) * | 2003-03-28 | 2004-11-04 | University Of Maryland | Method and system for determining user location in a wireless communication network |
| CN107333238A (en) * | 2017-07-03 | 2017-11-07 | 杭州电子科技大学 | A kind of indoor fingerprint method for rapidly positioning based on support vector regression |
| CN109936820A (en) * | 2017-12-15 | 2019-06-25 | 中国移动通信集团山东有限公司 | A kind of user terminal localization method and device |
| CN111225334A (en) * | 2018-11-23 | 2020-06-02 | 中国移动通信集团有限公司 | Positioning method, terminal and computer readable storage medium |
| CN112235724A (en) * | 2020-10-12 | 2021-01-15 | 腾讯科技（深圳）有限公司 | Indoor positioning method and device, electronic equipment and computer readable storage medium |
| CN112714493A (en) * | 2020-12-29 | 2021-04-27 | 北京工业大学 | Object position positioning method and positioning system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1575325B1 (en) | Estimating the location of inexpensive wireless terminals by using signal strength measurements | |
| US8270994B2 (en) | Applications of signal quality observations | |
| CN107318084B (en) | Fingerprint positioning method and device based on optimal similarity | |
| US10042033B2 (en) | Apparatus and method for calibrating a radio positioning based position finding device | |
| US8655372B2 (en) | Determining positions in a wireless radio system | |
| EP2118810B1 (en) | System and method for optimizing location estimate of mobile unit | |
| CN109951807A (en) | Fusion RSS and CSI indoor orientation method based on WiFi signal | |
| CN107302793B (en) | Positioning method, server, terminal and system based on wireless signals | |
| CN104427610B (en) | WiFi indoor orientation methods and server | |
| WO2004095790A1 (en) | Method and system for determining user location in a wireless communication network | |
| CN112714493B (en) | Object position positioning method and positioning system | |
| CN107343315B (en) | Positioning system and method based on wireless local area network multi-frequency point combined measurement | |
| WO2011036482A1 (en) | Estimating user device location in a wireless network | |
| CN103618997A (en) | Indoor positioning method and device based on signal intensity probability | |
| CN117671303B (en) | Stereoscopic ranging hidden danger early warning method and system based on twin network | |
| CN114144690A (en) | Apparatus and method for automatically marking high-precision indoor locations and determining location information | |
| CN106550447B (en) | Terminal positioning method, device and system | |
| EP1527650B1 (en) | Applications of signal quality observations | |
| CN113645691A (en) | Indoor positioning method, server and terminal | |
| CN108540926A (en) | A kind of construction method and device of wireless signal fingerprint | |
| CN113810854B (en) | Method for determining motion trail of terminal and server | |
| CN110049550B (en) | Wireless indoor positioning and sensing method, system and storage medium | |
| CN111491368A (en) | Correction method and correction device suitable for AOA algorithm positioning base station | |
| CN118590989B (en) | Wi-Fi fingerprint indoor positioning method and system based on random forest | |
| JP6455818B2 (en) | Attenuation coefficient estimation device, attenuation coefficient estimation method, and program |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211112 |