KR101417267B1 - Method for measuring position and system for measuring position - Google Patents

Abstract

Disclosed is a position measuring method capable of position measurement within a short time. The method includes receiving data acquisition time from another terminal, receiving data from another terminal if the received data acquisition time is more recent based on the received data acquisition time, And determining the position of the information terminal when the information terminal can be positioned. Accordingly, the information terminal can improve the accuracy of the position measurement by receiving the position information, the satellite information, the cell ID information, and the like of other terminals from other terminals, and can remarkably improve the accuracy of the position measurement by receiving the initial position information reception time (TTFF, Time To First Fix) Can be reduced.

Description

METHOD FOR MEASURING POSITION AND SYSTEM FOR MEASURING POSITION

The present invention relates to position measurement, and more particularly, to a position measurement method and a position measurement system.

The Global Positioning System (GPS) is a national satellite radio navigation satellite system developed and promoted by the Ministry of National Defense (DOD). The satellite positioning system (NAVSTAR) is a mid-latitude and high- It is also called NAVSTAR / GPS in the sense that it is a system to use.

The GPS consists of 24 satellites, 24 ground stations, satellite control stations, and user mobile stations, each of which is launched at four altitudes of sixteen circular orbits at an altitude of 20,000 km, an actual cycle time of 12 hours, and an orbital inclination angle of 55 degrees. The satellite has an atomic clock.

Because GPS is deployed so that at least two satellites are always in the watch everywhere on the earth, the user selects the appropriate four of these satellites, receives the time signal from the selected satellite, and measures each distance.

Here, since the positions of the four satellites are known, the latitude, longitude, and altitude of the user in three dimensions and the visual deviation of the clock can be known from this measurement. The transmission frequency from the satellite is two waves of L1 (1,575, 42 MHz) and L2 (1,227.6 MHz), and the ionospheric delay is corrected by these two waves.

GPS was originally built to measure the position of military vehicles, traps, and aircraft, but now it can be used in civilian applications, so it is used in navigation devices such as automobiles, navigation devices such as ships and helicopters.

On the other hand, when the conventional information terminal performing the navigation function receives a navigation request from the user after the power is turned on, the GPS receiver searches for GPS satellites existing within the clock range among all 24 GPS satellites, To calculate the position.

Here, it takes a lot of time to search for satellites in the current clock range during the search for GPS satellites in the clock range and calculation of the location, and particularly in the shadow areas where satellite signals are not well detected and received (for example, Etc.), it is impossible to search for satellites.

Therefore, it is difficult for the information terminal to provide the self location information in real time, and the location information displayed on the map is not matched with the current location. In addition, there is a problem that the location of the current information terminal and the location information of the information terminal delayed by a predetermined time are displayed.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a position measuring method capable of quickly measuring a position.

It is another object of the present invention to provide a position measurement system capable of quickly measuring a position.

It is still another object of the present invention to provide a position measurement method for extending a satellite searchable area.

It is still another object of the present invention to provide a position measurement system for improving the position accuracy of a terminal device.

According to another aspect of the present invention, there is provided a method for measuring a location of an information terminal, the method comprising: receiving a data acquisition time from another terminal; Receiving the data from the other terminal and determining the position of the information terminal when the information terminal can be positioned based on the received data.

Here, the data may include at least one of location information of the other terminal, satellite orbital information, extended satellite orbit information, DOP (Dilution Of Precision), and cell ID .

The step of determining the position of the information terminal when the information terminal can be positioned based on the received data may include searching satellite based on at least one of the satellite orbit information and the extended satellite orbit information, And determining the position of the information terminal when positioning of the information terminal is possible based on the satellite signal received from the determined satellite.

The step of determining the position of the information terminal when the positioning of the information terminal is possible based on the received satellite signal includes the steps of: if positioning of the information terminal is impossible based on the received satellite signal, Requesting a cell ID from the terminal and receiving the cell ID from the other terminal and determining the location of the information terminal based on the received cell ID.

Herein, the step of receiving data from the other terminal may be a method of transmitting data using a short range wireless communication schemes, for example, Bluetooth, WiFi, UWB , ultra wideband (RFID), Radio Frequency Identification (RFID), Near Field Communication (NFC), and ZigBee.

The method may further include displaying the determined position of the information terminal on a map.

Here, the receiving of the data from the other terminal may include receiving data from the other terminal based on the received data acquisition time, if the received data acquisition time is more recent based on the received data acquisition time, If the time is more recent, the data of the information terminal can be transmitted to the other terminal.

According to another aspect of the present invention, there is provided a method for measuring a location of a terminal, including the steps of acquiring data, storing the acquired data in association with the data acquisition time, Receiving data from another terminal if the data acquisition time of the other terminal is more recent based on a data acquisition time of the other terminal received; And updating the stored data with the stored data.

The acquiring of the data may include acquiring the current position information, the satellite orbit information, the extended satellite orbit information, the DOP (Dilution Of Precision) of the available satellite, and the cell ID At least one of them can be obtained.

Here, if the data acquisition time of the other terminal is more recent based on the data acquisition time of the other terminal, the step of receiving data from the other terminal may further include: And if the data acquisition time of the terminal is more recent, the data of the terminal can be transmitted to the other terminal.

According to another aspect of the present invention, there is provided an information terminal comprising: a storage unit; a communication unit for performing communication with another terminal; And if the data acquisition time of the other terminal is more recent based on the data acquisition time of the received other terminal, receiving data from the other terminal and providing the received data And a position determiner for determining the position of the information terminal when the positioning is possible based on the data provided from the controller and the controller, and for providing the determined position to the controller.

Here, the data may include at least one of location information of the other terminal, satellite orbit information, extended satellite orbit information, DOP (Dilution Of Precision), and cell ID.

Here, the information terminal determines a satellite based on at least one of the satellite orbit information and the extended satellite orbit information received from the control unit, receives the satellite signal from the determined satellite, and transmits the received satellite signal to the control unit And a satellite signal receiving unit for receiving the satellite signal.

Here, if the positioning is impossible based on the satellite signal provided from the satellite signal receiving unit, the control unit requests a cell ID from the other terminal, receives a cell ID from the other terminal, And to control the positioning unit to determine the position of the information terminal based on the ID.

Here, the communication unit may communicate with the other terminal through at least one of Bluetooth, WiFi, ultra wideband (UWB), Radio Frequency Identification (RFID), Near Field Communication (NFC), and Zigbee Lt; / RTI >

The information terminal may further include a location display unit for matching and outputting the determined location on a map stored in the storage unit based on the control of the control unit.

According to another aspect of the present invention, there is provided a terminal according to an embodiment of the present invention, which includes a storage unit, a communication unit for performing communication with another terminal, And a data acquiring unit that acquires data acquisition time of the other terminal, stores the acquired data in the storage unit in association with the acquired data acquisition time, receives the data acquisition time from another terminal, A controller for receiving data from the other terminal and providing the received data, and an update unit for updating the data stored in the storage unit using the data provided from the controller.

Here, the data may include at least one of location information of the terminal, satellite orbit information, extended satellite orbit information, DOP (Dilution Of Precision), and cell ID.

Here, if the data acquisition time stored in the storage unit is more recent, the control unit may read data corresponding to the data acquisition time from the storage unit and transmit the data to the other terminal.

According to the position measuring method and the position measuring system of the present invention, when the information terminal becomes able to perform wireless communication with another terminal, the information terminal receives the latest data from other terminals capable of synchronizing, After determining the satellite to be used by searching for the satellite in the clock based on the satellite earliness information, the satellite information is received from the determined satellite and the position of the information terminal is calculated based on the received satellite information.

Accordingly, the information terminal can improve the accuracy of the position measurement by receiving the latest data including other terminal location information, satellite information, cell ID information, and the like from other terminals, and can improve the accuracy of the location information reception time (TTFF, Time To First Fix) can be dramatically reduced. In addition, it is possible to extend the range of the location measurement by sharing the cell ID information from neighboring synchronous terminals in the shadow area of the GPS satellite signal, and to compare the arrangement states (DOP) By using the data, the accuracy of the position measurement can be increased.

Fig. 1 is a flowchart showing a position measuring method.
2 is a flowchart illustrating a method of measuring a position of an information terminal according to an embodiment of the present invention.
3 is a flowchart illustrating a method of measuring a location of a terminal according to an embodiment of the present invention.
4 is a conceptual diagram of a position measurement system according to an embodiment of the present invention.
5 is a block diagram illustrating a configuration of an information terminal according to an embodiment of the present invention.
6 is a block diagram illustrating a configuration of a terminal according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail.

It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted in an ideal or overly formal sense unless explicitly defined in the present application Do not.

The satellite positioning system includes GPS (Global Positioning System) in the United States, Glonass in Russia, Galileo in Europe, Beidu in China, and COMPASS in China. An embodiment of the present invention will be described using an example of US GPS.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In order to facilitate the understanding of the present invention, the same reference numerals are used for the same constituent elements in the drawings and redundant explanations for the same constituent elements are omitted.

Fig. 1 is a flowchart showing a position measuring method.

Referring to FIG. 1, when an operation control signal is input from a user, the information terminal drives according to an input operation control signal (S110) and searches for a receivable GPS satellite among 24 GPS satellites (S120) .

Here, the information terminal may be a navigation, a smart phone, a touch phone, a personal digital assistants (PDA) phone, a wireless broadband internet phone ), A digital multimedia broadcasting phone (DMB phone), a portable multimedia player (PMP), a tablet PC, a notebook, and the like.

If the received GPS satellite is detected, the information terminal synchronizes with the searched GPS satellite (S130), and receives the GPS satellite signal from the searched GPS satellite (S140).

The information terminal calculates a current magnetic location based on the GPS satellite signal received from the searched GPS satellite (S150).

Thereafter, the information terminal matches the calculated current self position with the map information and outputs it (S160).

The information terminal stores satellite information (for example, satellite orbit information) when the power is turned off according to the operation control signal input from the user (S170).

Here, the satellite orbit information when the power is off can be utilized for calculating the self position when the information terminal is driven later. However, there is a limit that the satellite information can not be utilized as a position shift of the satellite when the power-off time elapses for a certain period of time (for example, 2 to 4 hours).

2 is a flowchart illustrating a method of measuring a position of an information terminal according to an embodiment of the present invention.

Referring to FIG. 2, when the operation control signal is inputted from the user, the information terminal receives the data acquisition time from the synchronized terminal when the power is turned on according to the input operation control signal (S210).

Herein, the communication with other terminals of the information terminal may be performed by using short-range wireless communication schemes such as Bluetooth, WiFi, ultra wideband (UWB), Radio Frequency Identification (RFID) Field Communication, Zigbee, and the like.

In step S220, the information terminal determines which of the data acquisition time received from the mobile station synchronized with the acquisition time of the previously stored satellite orbit information is the one most recently acquired.

If it is determined in step 220 that the data acquisition time received from the synchronized terminal is more recent, the information terminal receives the data from the synchronized terminal (S230).

Here, the data may include location information (e.g., latitude, longitude, and altitude) of other terminals, satellite information (e.g., satellite orbit information, extended satellite orbit information, etc.), cell ID, DOP, Dilution Of Precision), and the like.

The information terminal searches the GPS satellite based on at least one of the satellite orbit information and the extended satellite orbit information received from the other terminal through step 230 and determines a GPS satellite capable of receiving the GPS satellite signal (S240).

Then, the information terminal receives the GPS satellite signal from the determined GPS satellite and determines whether the information terminal can be positioned based on the received GPS satellite signal (S250).

If it is possible to determine the position of the information terminal through step 250, the information terminal matches the determined position with the previously stored map information and outputs it to the screen so that the user can confirm it (S260).

or. If it is determined in step 250 that the information terminal can not be located, the information terminal transmits a cell ID request message to another terminal (S270).

After receiving the cell ID from another terminal, the information terminal determines the current position of the information terminal based on the received cell ID (S280).

Therefore, even when the information terminal enters a shaded area (for example, a downtown building, an underground parking lot, a forest, a tunnel, etc.) where no GPS satellite signal is received, the location can be determined based on the cell ID received from another terminal , The service coverage of the information terminal can be expanded.

Herein, when the information terminal enters the shaded area where the GPS satellite signal is not received, the information terminal compares the distribution map (DOP) of the satellite currently being used by the other terminal with the distribution map of the satellite currently used by the information terminal, .

Alternatively, if it is determined in step 220 that the acquisition time of the satellite orbit information stored in the information terminal is latest, the information terminal reads the previously stored satellite orbit information and transmits it to another terminal (S290).

In an embodiment of the present invention, the information terminal determines the latest data by comparing the data acquisition time received from another terminal with the previously stored data acquisition time. However, in another embodiment of the present invention, (For example, latitude, longitude, and altitude) of the other terminal and compare the current location information stored in advance with the current location information of the other terminal to determine more accurate data.

According to the method for measuring the position of the information terminal according to the embodiment of the present invention, the information terminal can improve the accuracy of the position measurement by receiving the latest position information, satellite information, cell ID information, (TTFF, Time To First Fix) can be drastically reduced. In addition, the information terminal can expand the range of location measurement by sharing the cell ID information from neighboring synchronous terminals in the shadow area of the GPS satellite signal.

3 is a flowchart illustrating a method of measuring a location of a terminal according to an embodiment of the present invention.

Referring to FIG. 3, the terminal acquires data at predetermined time intervals through a specific application program (S310), stores the acquired data and the obtained time in association with each other (S320).

The terminal may be a navigation device capable of transmitting and receiving data through communication, a smart phone, a touch phone, a PDA phone, a WiBro phone, a DMB phone, a PMP, a tablet PC, a notebook, and the like. The data may include location information (e.g., latitude, longitude, and altitude) of the terminal, satellite information (e.g., satellite orbital information, extended satellite orbit information, etc.), cell ID, ), And the like.

Thereafter, when another terminal capable of communicating is detected, the terminal receives the data acquisition time from another terminal (S330).

The terminal compares the data acquisition time received from the other terminal with the previously stored data acquisition time to determine which data acquisition time is the latest (S340)

If it is determined in step 340 that the data acquisition time of the other terminal is more recent than the data acquisition time of the terminal, the terminal receives data corresponding to the data acquisition time from the other terminal (S350).

Thereafter, the terminal updates the data stored in advance based on the data received from the other terminal (S360).

Alternatively, if it is determined in step 340 that the data acquisition time of the terminal is more recent than the data acquisition time of the other terminals, the terminal transmits the most recent data to another terminal (S370).

Here, the communication between the terminal and another terminal can be performed by short-distance wireless communication schemes, for example, Bluetooth, Wi-Fi, ultra-wideband communication, RFID, NFC, ZigBee,

According to an embodiment of the present invention, it is described that the data acquisition time received from another terminal is compared with the previously acquired data acquisition time, and the latest data is updated to update the currently stored data. However, in another embodiment of the present invention The terminal may receive the current position information as well as the data acquisition time from the other terminal and compare the current position information with the current position information of the terminal stored in advance and then update the previously stored data with more accurate and useful data.

Therefore, according to the method of measuring a position of a terminal according to an embodiment of the present invention, accuracy of positioning can be improved by comparing data with other synchronous terminals in the vicinity and updating data with the latest data.

4 is a conceptual diagram of a position measurement system according to an embodiment of the present invention.

Referring to FIG. 4, a position measurement system according to an embodiment of the present invention may include an information terminal 100, a terminal 200, and a GPS satellite 300.

First, the information terminal 100 acquires position information (e.g., latitude, longitude, and altitude) of the terminal 200, satellite information (e.g., satellite orbit information, extended satellite orbit information) (DOP) of available satellites, and the like from the terminal 200.

The information terminal 100 confirms the GPS satellite 300 capable of receiving the GPS satellite through the satellite information among the data received from the terminal 200, receives the GPS satellite signal from the determined GPS satellite 300, .

Then, the information terminal 100 matches the determined magnetic location with a previously stored map, and displays it so that the user can confirm it.

Accordingly, the information terminal 100 receives the position information and the satellite information of the terminal 200 from the terminal 200, thereby reducing the time required for confirming the GPS satellite 300. [

The terminal 200 may acquire position information (e.g., latitude, longitude, and altitude) of the terminal 200, satellite information (e.g., satellite orbit information, extended satellite orbit information, etc.) ), A cell ID, an arrangement state of available satellites, and the like, and stores the acquired data and the obtained time in association with each other.

When the information terminal 100 capable of synchronizing with the periphery is searched, the terminal 200 acquires the data acquisition time stored in the terminal 200, the location information of the terminal, the data acquisition time stored in the information terminal 100, The location information of the information terminal 100 can be compared with each other to update the data of the terminal 200 with the latest accurate data. When it is determined that the data acquisition time stored in the terminal 200 is more recent than the data acquisition time stored in the information terminal 100, the terminal 200 transmits the location information, the satellite information, the cell ID, And transmits the data including the information to the information terminal 100.

Hereinafter, the configurations of the information terminal 100 and the terminal 200 will be described in detail with reference to the block diagrams.

5 is a block diagram illustrating a configuration of an information terminal according to an embodiment of the present invention.

5, the information terminal 100 according to an embodiment of the present invention includes a communication unit 110, a GPS satellite signal receiving unit 120, a positioning unit 130, a location display unit 140, a storage unit 150 And a central control unit 160. [0029]

First, the communication unit 110 receives data from another terminal and provides the received data to the central control unit 160.

Here, the data may include location information (e.g., latitude, longitude, and altitude) of other terminals, satellite information (e.g., satellite orbit information, extended satellite orbit information, etc.), cell ID, . ≪ / RTI >

The GPS satellite signal receiving unit 120 searches for a satellite based on the GPS satellite information provided from the central control unit 160, determines a GPS satellite to receive the GPS satellite signal, and receives a GPS satellite signal from the determined GPS satellite And provides the received GPS satellite signal to the central control unit 160.

The positioning unit 130 determines the position of the information terminal 100 when the information terminal 100 can be positioned based on the GPS satellite signal provided from the central control unit 160 and transmits the determined position to the central control unit 160 ).

Alternatively, the positioning unit 130 may determine the position of the information terminal 100 based on the cell ID provided from the central control unit 160 when the positioning is impossible based on the satellite signal, and transmit the determined position to the central control unit 160).

The location display unit 140 displays the location of the information terminal 100 determined based on the control of the central control unit 160 by matching with the map information stored in the storage unit 150.

The central control unit 160 searches for a GPS satellite through satellite information (for example, satellite orbital information, extended satellite orbit information, etc.) among the received data, And confirms the GPS satellite to receive the signal.

Alternatively, when data is not received through the communication unit 110 within a preset time, the central control unit 160 may search for available GPS satellites within the 24 GPS satellites, To the GPS satellite signal receiving unit 120. [

Also, the central control unit 160 provides the GPS satellite signal receiving unit 120 with information about the determined GPS satellite.

The central control unit 160 provides the GPS satellite signal received from the GPS satellite signal receiving unit 120 to the positioning unit 130.

Alternatively, when the positioning unit 130 determines that the current position can not be determined based on the GPS satellite signal, the central control unit 160 transmits a cell ID request message to another terminal, The position determination unit 130 may provide the received cell ID to the position determination unit 130.

The central control unit 160 may be configured to display the determined position on the display unit 150 by matching with the map information stored in the storage unit 150 when the determined position of the information terminal 100 is provided from the positioning unit 130 140).

Therefore, the information terminal 100 according to an embodiment of the present invention can improve the accuracy of position measurement by receiving the latest position information, satellite information, cell ID information, and the like from other terminals, The position information reception time (TTFF) can be drastically reduced. Also, even when the information terminal 100 enters a shaded area where GPS satellite signals are not received well, the current location can be determined by receiving the cell ID information from the nearby terminals.

6 is a block diagram illustrating a configuration of a terminal according to an embodiment of the present invention.

The terminal 200 according to an exemplary embodiment of the present invention may be configured to transmit current location information (latitude, longitude, altitude, etc.), satellite information (satellite orbit information, extended satellite orbit information, etc.), cell ID, And a specific application program (application) capable of acquiring the layout state and the like are installed.

6, a terminal 200 according to an exemplary embodiment of the present invention includes a data acquisition unit 210, a terminal storage unit 220, a controller 230, a communication interface 240, and an update unit 250 .

First, the data acquisition unit 210 acquires data for each preset period through the installed specific application program, and provides the acquired data to the control unit 230.

The data may include location information (e.g., latitude, longitude, altitude, etc.), satellite information (e.g., satellite orbit information, extended satellite orbit information, etc.), cell ID, can do.

The control unit 230 stores the data received from the data acquisition unit 210 and the acquired time of the data in the terminal storage unit 220.

Also, the controller 230 receives the data acquisition time from the synchronized terminal and compares the data acquisition time stored in the terminal storage unit 220 with the acquisition time, which is the latest acquisition time.

The control unit 230 receives data from another terminal through the communication interface 240 when it is determined that the data acquisition time of the other terminal is more recent than the data acquisition time stored in the terminal storage unit 220. [ Then, the control unit 230 provides the received data to the update unit 250 when the data is received from another terminal.

If it is determined that there is a data request from another terminal through the communication interface 240, the control unit 230 reads the most recent data from the terminal storage unit 220 and transmits it to another terminal through the communication interface 240 do.

The data update unit 250 updates the data stored in the terminal storage unit 220 with data of another terminal provided from the control unit 230. [

According to an embodiment of the present invention, the data acquisition time obtained from the other terminal is compared with the previously acquired data acquisition time to determine the latest data, and the data stored in advance as the latest data is updated. However, The terminal may receive the current location information as well as the data acquisition time from the other terminal and compare the current location information with the current location information of the terminal stored in advance and then update the previously stored data with more accurate and useful data.

Therefore, the accuracy of data can be improved by comparing the data acquisition time and / or position information with other synchronizable neighboring terminals in the vicinity, and updating the data stored in advance with the most accurate data.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. It will be possible.

100: Information terminal 110:
120: GPS satellite signal receiving unit 130: Positioning unit
140: position display unit 150:
160: central control unit 200: terminal
210: Data acquisition unit 220:
230: control unit 240: communication interface
250:

Claims (19)

A position measuring method performed by an information terminal,
Receiving data acquisition time from another terminal;
Receiving the data from the other terminal if the received data acquisition time is more recent based on the received data acquisition time; And
And determining a position of the information terminal when the information terminal can be positioned based on the received data. The method according to claim 1,
The data includes:
(DOP), and a cell ID (Cell ID) of at least one of the mobile station and the mobile station, location information of the other mobile station, satellite orbit information, extended satellite orbit information, How to measure. The method of claim 2,
Determining the position of the information terminal when the information terminal can be positioned based on the received data,
Determining a satellite to search for a satellite based on at least one of the satellite orbit information and extended satellite orbit information and to receive a satellite signal; And
And determining the position of the information terminal when the positioning of the information terminal is possible based on the satellite signal received from the determined satellite. The method of claim 3,
Determining the position of the information terminal when the information terminal can be positioned based on the received satellite signal,
Requesting at least one of a cell ID and an available satellite positioning state to the other terminal when the positioning of the information terminal is impossible based on the received satellite signal; And
And determining the position of the information terminal based on at least one of the cell ID received from the other terminal and the deployed state of the available satellite. The method according to claim 1,
Wherein if the data acquisition time of the other terminal is more recent,
(UWB), Radio Frequency Identification (RFID), Near Field Communication (NFC), Zigbee (Zigbee), and the like, when the data acquisition time of the other terminal is more recent. And receiving data from the other terminal through at least one of the plurality of terminals. The method according to claim 1,
And displaying the determined location of the information terminal by matching the location of the information terminal with the map. The method according to claim 1,
Receiving the data from the other terminal if the received data acquisition time is more recent based on the received data acquisition time,
And transmitting the data of the information terminal to the other terminal when the data acquisition time of the information terminal is more recent based on the received data acquisition time. A method for measuring a position of a terminal,
Acquiring data;
Storing the acquired data and the data acquisition time in association with each other;
Receiving data acquisition time of another terminal;
Receiving data from the other terminal when the data acquisition time of the other terminal is more recent based on a data acquisition time of the received other terminal; And
And updating the stored data with the received data. The method of claim 8,
Wherein the step of acquiring the data comprises:
Acquiring at least one of the current position information, the satellite orbit information, the extended satellite orbit information, the arrangement state of the available satellites (DOP, Dilution Of Precision) and the cell ID in a predetermined period through a specific program A method for measuring a position of a terminal. The method of claim 8,
Receiving data from the other terminal when the data acquisition time of the other terminal is more recent based on the data acquisition time of the received other terminal,
And transmitting the data of the terminal to the other terminal when the data acquisition time of the terminal is more recent based on the data acquisition time of the received other terminal. A storage unit;
A communication unit for performing communication with another terminal;
And if the data acquisition time of the other terminal is more recent based on the data acquisition time of the received other terminal, receiving data from the other terminal and providing the received data A control unit; And
And a position determination unit for determining a position of the information terminal when the positioning is possible based on the data provided from the control unit and the map information stored in the storage unit, and for providing the determined position to the control unit. The method of claim 11,
The data includes:
Wherein the information terminal includes at least one of position information of the other terminal, satellite orbit information, extended satellite orbit information, DOP (Dilution of Precision), and cell ID. The method of claim 12,
Wherein the control unit searches for a satellite based on at least one of the satellite orbit information and the extended satellite orbit information received from the control unit, determines a satellite to receive the satellite signal, receives the satellite signal from the determined satellite, Further comprising a satellite signal receiving unit for providing a signal to the control unit. 14. The method of claim 13,
Wherein,
If it is impossible to determine a position based on the satellite signal provided from the satellite signal receiving unit, the mobile terminal requests a cell ID to the other terminal, receives the cell ID from the other terminal, and determines the position of the information terminal based on the received cell ID The control unit controls the positioning unit to control the positioning unit. The method of claim 11,
The communication unit may communicate with another terminal through at least one of Bluetooth, WiFi, Ultra Wideband (RFID), Radio Frequency Identification (RFID), Near Field Communication (NFC), and Zigbee To the information terminal. The method of claim 11,
The information terminal comprises:
And a location display unit for matching and outputting the determined location on a map stored in the storage unit under the control of the control unit. A storage unit;
A communication unit for performing communication with another terminal;
A data acquisition unit for acquiring data through a specific application program;
Storing the acquired data in the storage unit in association with the acquired time, receiving the data acquisition time from another terminal, and acquiring the data acquisition time of the other terminal based on the received data acquisition time A controller receiving data from the other terminal and providing the received data; And
And an update unit configured to update data stored in the storage unit using data provided from the control unit. 18. The method of claim 17,
The data includes:
Wherein the terminal comprises at least one of location information of the terminal, satellite orbit information, extended satellite orbit information, DOP (Dilution of Precision), and cell ID. 18. The method of claim 17,
Wherein,
And reads data corresponding to the data acquisition time from the storage unit and transmits the data to the other terminal when the data acquisition time stored in the storage unit is more recent.

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