KR20190017249A - Method for measuring position using low power, and terminal and system thereof - Google Patents

Abstract

In accordance with an embodiment of the present invention, provided is a low power positioning method which is performed by a terminal, and which comprises the following steps: searching for a Wi-Fi access point for a predetermined time and checking whether corresponding information of a search access point is among previously stored information when the search for the access point is successful; acquiring position information of the search access point from the previously stored information when there is the corresponding information, and positioning using the acquired position information and a signal strength of the search access point; accessing to a Wi-Fi positioning system (WPS) server to collect the position information of the search access point when there is no corresponding information, storing the collected position information, and positioning by using the collected position information and the signal strength of the search access point.

Description

TECHNICAL FIELD [0001] The present invention relates to a low power positioning method, a terminal and a system,

The present invention relates to a low power positioning method and a terminal, and more particularly, to a method, a terminal, and a system capable of measuring a current position of a terminal with low power.

In recent years, various types of terminals have been released, and a technique for measuring the position of a terminal according to need has been developed. Conventional terminal location measurement techniques measure the location of a terminal using radio signals such as WiFi, Bluetooth, ZigBee, and the like.

Meanwhile, in the case of a terminal such as an IoT terminal, a wearable terminal, a portable tracker, etc., there is a need for a technique capable of measuring the position of the terminal with low power consumption due to its limited battery capacity.

Particularly, in case of an infant terminal having a baby or touching, attaching, wearing or inserting into a part of a baby body, a service for locating a baby is provided together, so that a low-power positioning technique is indispensable.

However, the conventional position measurement technique is merely a technique for satisfying the criterion of improving the accuracy. That is, the conventional position measurement technique has a problem that it is difficult to apply to a terminal requiring low power consumption as described above.

In order to solve the above problems, the present invention provides a low power positioning method, a terminal, and a system capable of measuring a current position of a terminal with low power.

According to an aspect of the present invention, there is provided a low power positioning method for a terminal, the method comprising the steps of: (a) searching for a WiFi access point for a predetermined period of time, It is determined whether or not the corresponding information of the search access point is included in the stored information. If there is the corresponding information, the location information of the search access point is acquired from the stored information, If there is no corresponding information, it accesses a WIF (WiFi Positioning System) server, collects location information of the search access point, stores the collected location information, and uses the collected location information and the signal strength of the search access point .

The step (a) may further include caching location information of the retrieved access point.

The low power positioning method according to an embodiment of the present invention may further include (b) performed when the access point search fails in the step (a).

In the step (b), the location of the terminal is determined to be indoor or outdoor by using the history information of the previous GPS signal reception attempt, and only when it is determined to be outdoors, GPS signal reception is attempted for a predetermined time, And positioning using the received GPS signal if reception is successful.

The step (b) may further include the step of attempting to receive the GPS signal by omitting indoor or outdoor discrimination of the terminal place until a certain amount of history information is accumulated.

The step (b) may further include determining the location of the terminal outdoors when the probability of success of the GPS signal attempt performed in the current time zone of the previous date is more than a predetermined value.

A low power positioning method according to another embodiment of the present invention is a method for a second terminal or a server connected to a first terminal to perform positioning with respect to a first terminal, the method comprising the steps of: (a) When the access point is searched and the access point is successfully searched, it is checked whether the corresponding information of the searched access point is included in the stored information. If there is the corresponding information, the first terminal transmits the location information of the searched access point from the stored information And transmits the acquired position information and the signal strength information of the search access point to the second terminal or the server, and when the corresponding terminal does not have the corresponding information, the first terminal accesses a WIF (WiFi Positioning System) Collects the collected location information, and stores the collected location information and the signal strength information of the search access point in the second terminal or (B) performing a positioning with respect to the first terminal using information received from the first terminal or the second terminal or the server.

A low power positioning terminal according to an embodiment of the present invention includes: (1) a memory; (2) a communication unit having a WiFi communication module; (3) a first positioning process And a control unit.

In the first positioning process, a WiFi access point is searched for a predetermined time through a Wi-Fi communication module, and when the access point search is successful, it is checked whether the corresponding information of the search access point is included in the memory, Acquires position information of the search access point from the information of the memory and measures the position information using the obtained position information and the signal strength of the search access point, and when there is no corresponding information in the memory, the WPS (WiFi Positioning System) server, collects the location information of the search access point, stores the collected location information in the memory, and measures the location using the collected location information and the signal strength of the search access point.

The terminal may be an Internet of Things (IOT) terminal, a wearable terminal, or a portable tracker.

The terminal may be an infant.

The communication unit may further include a Global Positioning System (GPS) communication module, and the controller may perform a second positioning process when the access point search fails in the first positioning process.

The second positioning process identifies the location of the terminal indoors or outdoors by using the history information of the previous GPS signal reception attempt, activates the GPS communication module only for a certain period of time, And may be a process of positioning using the received GPS signal when the GPS signal is successfully received.

The second positioning process may attempt to receive the GPS signal by omitting indoor or outdoor discrimination of the terminal place until a certain amount of history information is accumulated.

The second positioning process can determine the location of the terminal outdoors when the probability of success of the GPS signal attempt performed in the current time zone of the previous date is more than a certain level.

A low power positioning system according to an embodiment of the present invention includes (1) a first terminal, (2) a second terminal or server connected to the first terminal.

The first terminal searches for a WiFi access point for a predetermined time to check whether the corresponding information of the search access point is included in the stored information when the access point is successfully searched, From the information of the memory, and transmits signal strength information of the retrieving access point to the second terminal or the server. If there is no corresponding information, the terminal accesses the WPS (WiFi Positioning System) Acquires location information of the point, stores the collected location information, and transmits the collected location information and the signal strength information of the retrieving access point to the second terminal or the server.

The second terminal or the server performs positioning with respect to the first terminal using the information received from the first terminal.

The low power positioning method, the terminal and the system according to an embodiment of the present invention configured as described above are capable of measuring the current position of the terminal with low power by performing position measurement according to a process considering battery consumption.

1 shows a configuration diagram of a low power positioning system according to an embodiment of the present invention.
2 shows a block diagram of a terminal according to an embodiment of the present invention.
3 shows a battery consumption table of operations for positioning.
4 shows a low power positioning method according to an embodiment of the present invention.
5 shows a flowchart of a low power positioning method according to an embodiment of the present invention.
6 shows a low power positioning system according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, . In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Furthermore, terms used herein are for the purpose of illustrating embodiments and are not intended to limit the present invention. In this specification, the singular forms include plural forms as the case may be, unless the context clearly indicates otherwise. &Quot; comprises "and / or" comprising "used in the specification do not exclude the presence or addition of one or more other elements other than the stated element. Unless defined otherwise, all terms used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. In addition, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

In this specification, the expressions " or ", " at least one ", etc. may denote one of the words listed together, or may represent a combination of two or more. For example, " A or B ", " at least one of A and B " may include only one of A or B, and may include both A and B.

In this specification, the term " positioning " refers to " position measurement ", " position tracking "

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a low power positioning system according to an embodiment of the present invention. FIG. 2 shows a block diagram of a terminal 10 according to an embodiment of the present invention.

1, a low power positioning system according to an embodiment of the present invention includes a terminal 10, a WPS server 20, and a GPS satellite 30, as shown in FIG.

The terminal 10 performs a low power positioning method according to an embodiment of the present invention. To this end, the terminal 10 may include a communication unit 11, a memory 12, and a control unit 13, as shown in Fig.

For example, the terminal 10 may be a mobile phone, a smartphone, a smartpad, a tablet personal computer, a videophone, an e-book reader, a desktop computer such as a desktop personal computer, a laptop personal computer, a netbook computer, a personal digital assistant (PDA), a portable multimedia player (PMP), an MP3 player, a medical device, a camera, a set- a game console, an electronic dictionary, an electronic key, a camcorder, a navigation, a tracker, an automobile infotainment device, an electronic signature receiving device, A projector, or a variety of measuring instruments, such as water meters, electric meters, gas meters, or radio wave measuring instruments, but are not limited thereto.

In addition, the terminal 10 may be an Internet of Things (IOT) terminal that performs the Internet function of objects. For example, IoT terminals can be equipped with various sensors (temperature sensors, humidity sensors, heat sensors, gas sensors, illuminance sensors, ultrasonic sensors Etc.), but is not limited to such information.

In addition, the terminal 10 may be a wearable terminal that can be contacted, attached, worn, or inserted into a part of the user's body. For example, a wearable device may be, but is not limited to, an electronic glove, an electronic eyeglass, an electronic garment, an electronic bracelet, an electronic necklace, an electronic app apparel, a smart watch, It is not.

However, when the terminal 10 is an IoT terminal, a wearable terminal, or a portable tracker, it is necessary to implement low power consumption positioning due to a limited battery capacity. Accordingly, these terminals may correspond to a terminal suitable for performing a low power positioning method according to an embodiment of the present invention.

In addition, when the terminal 10 is used for a child, it corresponds to a terminal which necessarily performs low power consumption positioning, and thus can be an optimal terminal for performing a low power positioning method according to an embodiment of the present invention.

The communication unit 11 is configured to communicate with other terminals, and may include modules of various communication methods.

For example, the communication unit 11 may include a WiFi communication module, a Bluetooth communication module, a NFC (Near Field Communication) communication module, a BAN (Body Area Network) communication module, a ZigBee communication module, But are not limited to, LoRaWAN, SigFox, W-MBUS, Wi-SUN, etc.), other local communication module, GPS (Global Positioning System) communication module, and mobile communication module (LET-M). The communication unit 13 may be integrated with the control unit 13.

The memory 12 stores various information necessary for performing the low power positioning method according to an embodiment of the present invention. Further, the memory 12 may store the control program of the control section 13. [

For example, the memory 12 may include a hard disk type, a magnetic media type, a compact disc read only memory (CD-ROM), an optical media type A magneto-optical media type, a multimedia card micro type, a flash memory type, a read only memory type, a random access memory (RAM) type, type), and the like, but the present invention is not limited thereto. Also, the memory 12 may be a cache, a buffer, a main memory, an auxiliary memory, or a separate storage system depending on its use / location, but is not limited thereto.

The control unit 13 controls the communication unit 11 and the memory 12. [ In particular, the controller 13 may control the performance of the low power positioning method according to an embodiment of the present invention.

The WPS server 20 stores information on a WiFi access point (hereinafter referred to as "access point") and its location information in a database. Information that the WPS server 20 stores and manages in the database can be received from various terminals including an access point.

That is, the WPS server 20 can add information of a new access point or update information of a conventional access point according to reception information. Also, the WPS server 20 can transmit information on the specific access point requested by the terminal 10 connected to the WPS server 20 and its location information to the terminal 10.

The GPS satellite 30 transmits the GPS signal to the ground. The GPS signal may include position information of the GPS satellite 30 and time information of the corresponding position. The terminal 10 can perform positioning using GPS signals received from three or more GPS satellites 30. [

Next, a low power positioning method according to an embodiment of the present invention, which is performed by the terminal 10, will be described.

3 shows a battery consumption table of operations for positioning. 4 shows a low power positioning method according to an embodiment of the present invention. 5 is a flowchart of a low power positioning method according to an embodiment of the present invention.

Referring to FIG. 3, the battery consumed in the operation for positioning becomes larger in the order of 1) searching for a Wi-Fi access point, 2) connecting a WPS server, and 3) receiving a GPS signal. That is, when the terminal 10 activates the Wi-Fi communication module and searches for the neighboring access point, battery consumption is the least. Next, when the terminal 10 is connected to the WPS server and receives information of a specific access point, battery consumption is next small. Lastly, when the terminal 10 activates the GPS communication module and receives the GPS signal, the battery consumption is greatest.

That is, the low power positioning method according to an embodiment of the present invention proposes a process for allowing the terminal 10 to consume a minimum amount of battery at the time of positioning by reflecting the battery consumption amount according to FIG. To this end, the low power positioning method according to an embodiment of the present invention includes S10 to S30 as shown in FIG.

However, the positioning is terminated at the time of successful positioning at S10, and S20 is performed at the time of positioning failure at S10. The positioning is terminated at the time of successful positioning in S20, and S30 is performed at the time of positioning failure in S20.

S10 is a step of performing positioning using the access point. To this end, S10 may include S11 to S15, as shown in Fig. At this time, S10 is also referred to as a " first positioning process ".

In step S11, the terminal 10 searches for an access point for a predetermined period of time. That is, the control unit 13 activates the woofie communication module of the communication unit 11 to search for an access point in the vicinity. At this time, the access point searched by the terminal 10 is referred to as a " search access point ".

In the case where the acquisition of the search access point succeeds in S11, S12 is performed. At this time, the terminal 10 can acquire information on the search access point from the signal of the search access point. For example, the information on the search access point includes an SSID (Service Set ID), identification information (MAC address, etc.), encryption, encryption, or RSS (Received Signal Strength) can do.

On the other hand, if the acquisition of the search access point fails in S11, S21 is performed. This case corresponds to the positioning failure in S10.

In step S12, the terminal 10 checks whether the correspondence information of the search access point is included in the information stored in the memory 12. [ That is, the control unit 13 searches the information stored in the memory 12 for information that matches information (for example, identification information) about the search access point. At this time, the memory 12 stores information on the search access point in which the terminal 10 has previously performed the " successful WPS connection " and its location information.

In the case where the corresponding information exists in the memory 12 in S12, S13 is performed. On the other hand, when the corresponding information does not exist in the memory 12 in S12, S14 to S16 are performed. However, after S14, S15 or S16 may be performed first, or S15 and S16 may be performed simultaneously.

In S13, the terminal 10 obtains the location information of the search access point from the corresponding information in the memory 12. [ Then, the terminal 10 completes the positioning using the acquired location information and the signal strength of the search access point. When the positioning is completed in this way, it corresponds to the positioning success in S10

That is, in step S13, the control unit 13 extracts the location information from the correspondence information of the search access point found in the memory 12. [ Then, the control unit 13 completes the positioning with respect to the terminal 10 using the extracted position information and the signal strength of the search access point acquired in S11.

In step S14, the terminal 10 accesses a WPS (WiFi Positioning System) server. Then, the terminal 10 collects the location information of the search access point from the WPS server. The case where the terminal 10 collects the location information of the search access point from the WPS server is referred to as " successful WPS connection ".

That is, the control unit 13 accesses the IP address of the WPS server through the communication unit 11 in S14. At this time, the control unit 13 may use a Wi-Fi communication module, but it is not limited thereto, and various communication modules connectable to the IP Internet network can be used. Then, the control unit 13 transmits information on the search access point to the connected WPS server through the communication unit 11. [ Then, the communication unit 11 receives the location information of the search access point from the WPS server, and transfers the received location information to the control unit 13.

In step S15, the terminal 10 stores the location information collected from the WPS server in the memory 12. [ That is, the terminal 10 stores the information on the search access point of " WPS connection succeeded " and its location information in the memory 12. [ That is, the controller 13 stores the location information received from the WPS server through the communication unit 11 in the memory 12 as location information of the search access point, together with the information on the search access point.

In step S16, the terminal 10 completes the positioning using the collected location information and the signal strength of the access point. If the positioning is completed as described above, it corresponds to the positioning success in step S10. That is, the control unit 13 performs positioning with respect to the terminal 10 using the position information received from the WPS server in S14 and the signal strength of the search access point obtained in S11.

On the other hand, in order to improve the positioning speed, the terminal 10 stores information on the search access point of " successful WPS connection " and its position information in the memory 12 using a caching technique in S15. For example, the caching technique may be an output caching technique or a data caching technique, but is not limited thereto.

A triangulation technique, a trilateration technique, a fingerprint technique, a proximity technique, or a High Accuracy Indoor Positioning (HAIP) technique can be used at the time of positioning the terminal 10 using the position information and the signal strength in S13 and S16 However, the present invention is not limited thereto.

S20 is a step of performing positioning using GPS. To this end, S20 may include S21 to S23, as shown in Fig. At this time, S20 is also referred to as a " second positioning process ".

In step S21, the terminal 10 determines whether positioning using GPS is possible. That is, the control unit 13 uses the history information to determine the location of the terminal 10 indoors or outdoors. In this case, the case of being determined to be outdoors corresponds to the case where positioning using GPS is possible, and only S22 is performed in this case. That is, when it is judged as the room, it corresponds to the positioning failure in S20.

In step S22, the terminal 10 tries to receive the GPS signal for a predetermined time. That is, the control unit 13 activates the GPS communication module (or the "GPS signal receiving module") of the communication unit 11 for a predetermined period of time and tries to receive the GPS signal. At this time, S23 is performed in the case of receiving the GPS signal, and this case is referred to as " success of GPS signal reception attempt ". Conversely, the case where GPS signal is not received is referred to as " failure of GPS signal reception attempt ", which corresponds to a positioning failure in S20.

In step S23, the terminal 10 performs positioning using the received GPS signal. That is, the control unit 13 can find the intersection from the received GPS signals and determine the intersection as the position of the terminal 10. [

On the other hand, the history information is information on a GPS signal reception attempt performed before (for example, a previous date). That is, the history information includes information on the time at which the terminal 10 previously performed S22 and whether or not the terminal 10 succeeded (success or failure of the GPS signal reception attempt).

In particular, in step S21, the terminal 10 determines the location of the terminal outdoors when the probability of success of the GPS signal attempt performed in the current time zone of the previous date is more than a predetermined value (for example, 50%). This reflects the tendency to have a fixed schedule for each time period. This tendency is more evident in the case of infants. At this time, a predetermined time (for example, one minute to one hour) before and after the current time corresponds to the current time zone.

S30 is a step of terminating the positioning or performing positioning using other means. To this end, S30 may include S31 or S32, as shown in FIG. At this time, S32 will also be referred to as a " third positioning process ".

In S31, the terminal 10 ends the positioning. That is, the control unit 13 can notify the user of the positioning failure information through a separate output unit (not shown), or can transmit the information to the other terminal or server through the communication unit 11.

In S32, the terminal 10 can perform positioning using other means. For example, the terminal 10 can determine the latest successful positioning result as the positioning result for the current time. Also, the terminal 20 may perform positioning using cell information of the currently connected mobile communication network. In this case, the control unit 13 receives the cell information, the mobile communication signal strength, and the location information of the cell currently connected to the communication unit 11 through the mobile communication module, and performs positioning using the information.

Next, a low power positioning system and method according to another embodiment of the present invention will be described.

6 shows a low power positioning system according to another embodiment of the present invention.

A low power positioning system according to another embodiment of the present invention includes a first terminal 100, a second terminal 200, a server 300, a WPS server 400, and a GPS satellite 500. At this time, the WPS server 400 and the GPS satellite 500 are the same as the WPS server 20 and the GPS satellite 30 according to the embodiment of the present invention, and a description thereof will be omitted.

Also, the first terminal 100 may be connected to the second terminal 200 or the server 300. However, the first terminal 100 performs a low power positioning method according to another embodiment of the present invention, which is different from the low power positioning method according to an embodiment of the present invention. That is, the first terminal 100 is the same as the terminal 10 according to the embodiment of the present invention, except for some differences in low power positioning, so that the description thereof will be omitted.

The second terminal 200 and the server 300 can perform positioning with respect to the first terminal 100 from the information transmitted from the first terminal 100. [

For example, the second terminal 200 may be a mobile phone, a smartphone, a smartpad, a tablet personal computer, a videophone, an e-book reader, But are not limited to, a desktop personal computer, a laptop personal computer, a netbook computer, and the like.

In addition, the second terminal 200 may be an Internet of Things (IOT) terminal that performs the object Internet function. For example, IoT terminals can be equipped with various sensors (temperature sensors, humidity sensors, heat sensors, gas sensors, illuminance sensors, ultrasonic sensors Etc.), but is not limited to such information.

In addition, the second terminal 200 may be a wearable terminal that can contact, attach, wear, or insert a part of the user's body. For example, a wearable device may be, but is not limited to, an electronic glove, an electronic eyeglass, an electronic garment, an electronic bracelet, an electronic necklace, an electronic app apparel, a smart watch, It is not.

Also, the first terminal 100 may be an infant terminal that is held by an infant or contacted, attached, worn, or inserted into a part of the infant's body. In this case, the second terminal 200 and the server 300 may be terminals or servers for the protector or the administrator of the infant.

The low power positioning method according to another embodiment of the present invention is partially different from the low power positioning method according to the embodiment of the present invention described above with reference to FIG. 3 to FIG. 5, and only the difference will be described later.

First, the low-power positioning method according to another embodiment of the present invention has some differences in S13 and S16. That is, the subject performing the positioning in S13 and S16 is the second terminal 200 or the server 300. [ Accordingly, in steps S13 and S16, the first terminal 100 transmits information on the access point, the location information thereof, and the signal strength information thereof to the second terminal 200 or the server 300. [ Then, the second terminal 200 or the server 300 performs positioning with respect to the first terminal 100 using information received from the first terminal 100. Thereafter, the second terminal 200 or the server 300 may transmit the positioning result to the first terminal 100.

In addition, the low power positioning method according to another embodiment of the present invention may have some differences in S23. That is, in step S23, the terminal 100 may perform positioning using the received GPS signal, and then transmit the positioning result to the second terminal 200 or the server 300. [

In addition, the low power positioning method according to another embodiment of the present invention may have some differences in S32. That is, in step S32, the first terminal 100 may determine a recent positioning result as a positioning result for the current time, and transmit the positioning result to the second terminal 200 or the server 300. [ The first terminal 100 transmits the cell information and the mobile communication signal strength of the currently connected mobile communication network to the second terminal 200 or the server 300 and the second terminal 200 or the server 300 Can grasp the location information of the corresponding cell. The second terminal 200 or the server 300 transmits the cell information of the first terminal 100 to the first terminal 100 using the cell information of the currently connected mobile communication network, Perform positioning for Thereafter, the second terminal 200 or the server 300 may transmit the positioning result to the second terminal 200 or the server 300.

Although the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Therefore, the scope of the present invention should not be limited to the embodiments described, but should be determined by the scope of the following claims and equivalents thereof.

10: Terminal 11:
12: memory 13:
20, 400: WPS server 30, 500: GPS satellite
100: first terminal 200: second terminal
300: server

Claims (13)

A low power positioning method performed by a terminal,
(a) a WiFi access point is searched for a predetermined time, and if the access point is successfully searched, it is checked whether corresponding information of the searched access point is included in the stored information,
If there is correspondence information, position information of the search access point from the pre-stored information and positioning using the acquired position information and the signal strength of the search access point,
If there is no corresponding information, accesses a WIF (WiFi Positioning System) server, collects location information of the search access point, stores the collected location information, and locates it using the collected location information and the signal strength of the search access point Wherein the low-power positioning method comprises the steps of: The method according to claim 1,
The step (a)
Further comprising the step of caching location information of the collected search access point. The method according to claim 1,
(B) performed when the access point search fails in the step (a)
The step (b)
The location of the terminal is determined to be indoor or outdoor by using the history information on the GPS signal reception attempt performed previously, but only when the GPS signal is received for a certain period of time, Wherein the positioning is performed using a received GPS signal. The method of claim 3,
The step (b)
Further comprising the step of omitting indoor or outdoor discrimination of the terminal place and attempting reception of the GPS signal until a certain amount of history information is accumulated. The method of claim 3,
The step (b)
Further comprising the step of determining the location of the terminal outdoors when the probability of success of the GPS signal attempt performed in the current time zone of the previous day is more than a predetermined value. A low power positioning method in which a second terminal or a server connected to a first terminal performs positioning with respect to a first terminal,
(a) when the first terminal searches for a Wi-Fi access point for a predetermined time and succeeds in searching for the access point, it checks whether corresponding information of the search access point is included in the stored information,
The first terminal obtains the location information of the search access point from the pre-stored information and transmits the obtained location information and the signal strength information of the search access point to the second terminal or the server,
If there is no corresponding information, the first terminal accesses a WIF (WiFi Positioning System) server, collects the location information of the search access point, stores the collected location information, and stores the collected location information and the signal strength information of the search access point 2 terminal or a server; And
(b) performing a positioning with respect to the first terminal using information received from the first terminal or the second terminal or the server. Memory;
A communication unit having a WiFi communication module;
And a control unit for controlling the positioning using the communication unit and performing a first positioning process,
The first positioning process includes:
(WiFi) access point through a Wi-Fi communication module for a predetermined time, and when the access point search is successful, it is checked whether the correspondence information of the search access point is included in the information stored in the memory,
Acquires position information of the search access point from the information of the memory when the correspondence information is present in the memory, and uses the acquired position information and the signal strength of the search access point to position the search access point,
If there is no corresponding information in the memory, it accesses a WIF (WiFi Positioning System) server through a Wi-Fi communication module to collect location information of the search access point, stores the collected location information in a memory, And a positioning process using the signal strength. 8. The method of claim 7,
Wherein the terminal is an Internet of Things (IOT) terminal, a wearable terminal, or a portable tracker. 8. The method of claim 7,
Wherein the terminal is for an infant. 8. The method of claim 7,
The communication unit may further include a GPS (Global Positioning System) communication module,
Wherein the control unit performs a second positioning process when the access point search fails in the first positioning process,
The second positioning process includes:
The mobile communication terminal determines whether the location of the terminal is indoors or outdoors by using the history information on the GPS signal reception attempt performed previously, but attempts to receive the GPS signal by activating the GPS communication module only for a certain period of time, And a positioning step of positioning using the received GPS signal when the reception is successful. 11. The method of claim 10,
The second positioning process includes:
Wherein the indoor or outdoor discrimination of the terminal location is omitted and the GPS signal reception is attempted until a certain amount of history information is accumulated. 11. The method of claim 10,
The second positioning process includes:
When the probability of success of the GPS signal attempt performed in the current time zone of the previous date is more than a predetermined value, discriminates the place of the terminal outdoors. A first terminal; And
And a second terminal or server connected to the first terminal,
The first terminal,
A WiFi access point is searched for a predetermined time, and when the access point is successfully searched, it is checked whether corresponding information of the search access point is included in the stored information,
When there is correspondence information, acquiring position information of the search access point from the information of the memory and transmitting the obtained position information and signal strength information of the search access point to the second terminal or the server,
Accesses a WIF (WiFi Positioning System) server to collect location information of the search access point, stores the collected location information, and transmits the collected location information and signal strength information of the search access point to the second terminal or server Lt; / RTI >
The second terminal or server,
And performs positioning with respect to the first terminal using information received from the first terminal.

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