KR101852667B1 - Apparatus for location estimation of beacon and method thereof - Google Patents
Apparatus for location estimation of beacon and method thereof Download PDFInfo
- Publication number
- KR101852667B1 KR101852667B1 KR1020150165598A KR20150165598A KR101852667B1 KR 101852667 B1 KR101852667 B1 KR 101852667B1 KR 1020150165598 A KR1020150165598 A KR 1020150165598A KR 20150165598 A KR20150165598 A KR 20150165598A KR 101852667 B1 KR101852667 B1 KR 101852667B1
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- South Korea
- Prior art keywords
- sub
- beacon
- aps
- beacon terminal
- estimating
- Prior art date
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Classifications
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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
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/0257—Hybrid positioning
- G01S5/0263—Hybrid positioning by combining or switching between positions derived from two or more separate positioning systems
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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
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/14—Determining absolute distances from a plurality of spaced points of known location
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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
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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
- G01S2205/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S2205/001—Transmission of position information to remote stations
- G01S2205/007—Transmission of position information to remote stations for management of a communication system
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention relates to an apparatus and method for estimating a position of a beacon terminal.
A method of estimating a position using a position estimating apparatus of a beacon terminal according to the present invention includes the steps of receiving a beacon signal from a plurality of sub APs spaced apart at the same angle and the same distance centering on a main AP (Access Point) Selecting two sub-APs corresponding to the upper two values of the reception sensitivity values by calculating respective reception sensitivity values through the beacon signal received from the terminal, and selecting a position where the selected two sub-APs are arranged And estimating an area in which the beacon terminal is located.
As described above, according to the present invention, the position of the beacon terminal can be accurately estimated by using Received Signal Strength Indication (RSSI) values at a plurality of access points (APs) receiving the beacon signal transmitted from the beacon terminal, It is possible to accurately track the position of one user moving in real time.
Description
The present invention relates to an apparatus and method for estimating a position of a beacon terminal, and more particularly, to a method and apparatus for estimating a position of a beacon terminal using received signal strength indication (RSSI) values at a plurality of access points (APs) And more particularly, to a position estimating apparatus and method for a beacon terminal that estimates a position of a beacon terminal.
Recently, a beacon device that recognizes a user's location from a radius of 50 m to a maximum of 100 m through a Bluetooth low energy (BLE) 4.0 protocol, a low-power short-range wireless communication technology, is used in an indoor positioning system The number of applications is gradually increasing.
In general, a user terminal such as a smart phone supports Wi-Fi and BLE technology, so that a location-based service (LBS) in an indoor space can be provided by using a signal transmitted from a beacon device.
Conventionally, a method of measuring a position by measuring a distance between a beacon and an AP (Access Point) in order to measure a position through a beacon device has been mainly used. This method can roughly determine the position of a beacon, There was a problem that it was somewhat difficult to grasp the exact position.
The technique of the present invention is disclosed in Korean Patent Laid-Open Publication No. 10-2005-0011868 (published on January 31, 2005).
SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problem, and it is an object of the present invention to provide a beacon terminal that uses a Received Signal Strength Indication (RSSI) value at a plurality of access points (APs) And a method for estimating a position of a beacon terminal that accurately estimates a position of a beacon terminal and a method thereof.
According to an aspect of the present invention, there is provided a method for estimating a position using a beacon terminal position estimating apparatus, the method including the steps of: receiving a beacon signal from a plurality of sub APs spaced at the same angle and the same distance, Receiving a beacon signal, respectively; Selecting two sub APs corresponding to the upper two values of the reception sensitivity values by calculating respective reception sensitivity values through the beacon signal received from the beacon terminal; And a first estimation of a region in which the beacon terminal is located using the location where the selected two sub APs are located.
Receiving the beacon signal from the main AP; Measuring a distance between the main AP and the beacon terminal using a beacon signal received from the main AP; And a second estimating a position of the beacon terminal by using the spacing distance.
The selected two sub-APs include a first sub-AP and a second sub-AP, and a sum of reception sensitivity values of the first sub-AP and one or more third sub-APs disposed adjacent to the first sub- Comparing the sum of the reception sensitivity values of the second sub AP and one or more fourth sub APs disposed adjacent to the second sub AP; And extracting sub-APs having a large value as a result of the comparison, and estimating that the beacon terminal is adjacent to the selected sub-APs in the extracted sub-APs .
In this case, the third sub-AP may be an AP closer to the first sub-AP than the second sub-AP, and the fourth sub-AP may be an AP closer to the second sub-AP than the first sub-AP.
In addition, when a beacon signal is transmitted from a beacon terminal, a beacon terminal position estimating apparatus according to an embodiment of the present invention includes a plurality of sub APs spaced at the same angle and the same distance centering on a main AP A signal receiver for receiving the beacon signal; And calculating a reception sensitivity value based on the beacon signal received from the beacon terminal and selecting two sub APs corresponding to the upper two values of the reception sensitivity values, And a location estimator for estimating an area where the beacon terminal is located.
As described above, according to the present invention, by estimating the position of a beacon terminal using RSSI (Received Signal Strength Indication) values at a plurality of access points (APs) receiving a beacon signal transmitted from the beacon terminal, It is possible to accurately track the position in which the user moves in real time.
Further, according to the present invention, it is possible to improve the accuracy by gradually narrowing the estimation range over various stages when estimating the position of the beacon terminal.
In addition, according to the present invention, since the location of a user having a beacon terminal can be tracked in real time, it can be applied to various types of games or applications based on location information.
1 is a conceptual diagram of a beacon terminal position estimating apparatus according to an embodiment of the present invention.
2 is a block diagram illustrating a beacon terminal position estimating apparatus according to an embodiment of the present invention.
3 is a flowchart illustrating an operation of a beacon terminal location estimation method according to an embodiment of the present invention.
FIG. 4 is a view for explaining a first step estimation of a beacon terminal position estimation method according to an embodiment of the present invention.
5 is a view for explaining second-stage estimation of a beacon terminal position estimation method according to an embodiment of the present invention.
6 is a diagram for explaining the third step estimation of the beacon terminal position estimation method according to the embodiment of the present invention.
FIG. 7 is an exemplary diagram illustrating a sub AP arrangement in a method of estimating a location of a beacon terminal according to an embodiment of the present invention.
Hereinafter, an apparatus and method for estimating a beacon terminal according to an embodiment of the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.
Further, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.
First, a beacon terminal position estimating apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG.
FIG. 1 is a conceptual diagram of a beacon terminal position estimating apparatus according to an embodiment of the present invention, and FIG. 2 is a block diagram illustrating a beacon terminal position estimating apparatus according to an embodiment of the present invention.
As shown in FIGS. 1 and 2, the apparatus for estimating a beacon terminal according to an embodiment of the present invention includes a
First, when a beacon signal is transmitted from the
Here, the
In addition, the
The
In addition, the
In this case, the
Hereinafter, a method of estimating a location of a beacon terminal according to an embodiment of the present invention will be described with reference to FIG. 3 through FIG.
3 is a flowchart illustrating an operation flow of a beacon terminal position estimating method according to an embodiment of the present invention, and a specific operation of the present invention will be described with reference to FIG.
In the beacon terminal position estimation method according to the embodiment of the present invention, the position of the
First, the first stage estimation according to S310 to S330 is as follows.
The
At this time, the beacon signal is periodically transmitted from the
Then, the
That is, as the reception sensitivity value is larger, it means that the distance between the
Next, the
That is, since the two selected
4 is a view for explaining the first step estimation (S310 to S330) of the beacon terminal position estimation method according to the embodiment of the present invention.
4, among the plurality of
In addition, the second stage estimation by S340 to S360 is as follows.
The
Next, the
Next, the
That is, by measuring the distance separated from the
FIG. 5 is a view for explaining second stage estimation (S340 to S360) of a method of estimating a position of a beacon terminal according to an embodiment of the present invention.
5, the
In addition, the third stage estimation by S370 to S390 is as follows.
For convenience of explanation, when two
Here, the
Then, the
Lastly, the
That is, the reception sensitivity value of the
6 is a diagram for explaining the third step estimation (S370 to S390) of the beacon terminal position estimation method according to the embodiment of the present invention.
6, among the plurality of
FIG. 7 is an exemplary diagram illustrating a sub AP arrangement in a method of estimating a location of a beacon terminal according to an embodiment of the present invention.
At this time, the
As described above, according to the present invention, by estimating the location of a beacon terminal using RSSI (Received Signal Strength Indication) values at a plurality of access points (APs) receiving a beacon signal transmitted from a beacon terminal, It is possible to accurately track the moving position of the user in real time.
Further, when estimating the position of the beacon terminal, the estimation range may be gradually narrowed over various stages, thereby improving the accuracy.
In addition, since the location of a user having a beacon terminal can be tracked in real time, it can be applied to various types of games or applications based on location information.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined by the appended claims. will be. Accordingly, the true scope of the present invention should be determined by the following claims.
110: signal receiving unit 120:
200: Beacon terminal 310: Main AP
320: Sub AP
Claims (8)
Receiving a beacon signal from a plurality of sub APs spaced at the same angle and the same distance around a main AP (Access Point);
Selecting two sub APs corresponding to the upper two values of the reception sensitivity values by calculating respective reception sensitivity values through the beacon signal received from the beacon terminal;
Performing a first estimation of an area in which the beacon terminal is located using the location of the selected two sub APs;
Receiving the beacon signal from the main AP;
Measuring a distance between the main AP and the beacon terminal using a beacon signal received from the main AP; And
And secondly estimating a position of the beacon terminal using the spacing distance.
The selected two sub-APs include a first sub-AP and a second sub-AP,
AP and the sum of the reception sensitivity values of one or more third sub APs disposed adjacent to the first sub AP and the reception sensitivity values of one or more fourth sub APs disposed adjacent to the second sub AP Comparing the sum of the reception sensitivity values; And
Further comprising the step of extracting sub-APs having a large value as a result of the comparison and thirdly estimating that the beacon terminals are adjacent to the positions where the selected sub-APs are located among the extracted sub-APs Position estimation method.
The third sub AP is an AP closer to the first sub AP than the second sub AP,
And the fourth sub-AP is an AP closer to the second sub-AP than the first sub-AP.
Calculating a reception sensitivity value based on the beacon signal received from the beacon terminal, selecting two sub-APs corresponding to the upper two values of the reception sensitivity values, determining a position where the selected two sub- And a position estimator for estimating a region in which the beacon terminal is located,
Wherein the signal receiver comprises:
Receiving the beacon signal from the main AP,
The position estimating unit may calculate,
Measuring a distance between the main AP and the beacon terminal using the beacon signal received from the main AP, and estimating a position of the beacon terminal using the distance.
The selected two sub-APs include a first sub-AP and a second sub-AP,
The position estimating unit may calculate,
AP and the sum of the reception sensitivity values of one or more third sub APs disposed adjacent to the first sub AP and the reception sensitivity values of one or more fourth sub APs disposed adjacent to the second sub AP And extracts sub-APs having a larger value by comparing the sum of the reception sensitivity values and extracts the location of the beacon terminal that estimates that the beacon terminal is adjacent to the position where the selected sub- Estimating device.
The third sub AP is an AP closer to the first sub AP than the second sub AP,
Wherein the fourth sub-AP is closer to the second sub-AP than the first sub-AP.
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KR102024563B1 (en) * | 2018-05-30 | 2019-09-24 | 에이미파이(주) | Method for measuring magnitude of radio wave indoors, and an apparatus for said method |
KR102448082B1 (en) * | 2022-06-02 | 2022-09-27 | (주)씨어스테크놀로지 | System for Positioning based on Angle of Arrival |
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