KR100884383B1 - Method for providing 3D location information and apparatus for providing location information therefor - Google Patents

Abstract

The present invention relates to a method for providing 3D location information and a device for providing location information for performing the same.

According to the present invention, building information and floor information on which the terminal device is currently located are acquired by using the GPS position measurement information and the barometric pressure measurement information measured by the terminal device. At this time, the building information is obtained by using the GPS position measurement information and the floor information is obtained by using the altitude information converted to the barometric pressure measurement information. The 3D location information of the terminal device is calculated based on the confirmed building information and the floor information.

Therefore, it is possible to track detailed location information ranging from the building information of the current location to the floor information of the building, and the location is tracked using the altitude information, so that indoor and outdoor location tracking is free regardless of the reception of GPS satellite signals. .

Location-based services, GPS, altitude correction,

Description

Method for providing three-dimensional position information and a location information providing device for performing the same

1 is an overall network configuration for providing three-dimensional location information according to an embodiment of the present invention.

2 is a flowchart illustrating a process of providing 3D location information according to an embodiment of the present invention.

3 is a flowchart illustrating a three-dimensional position information calculation process according to an embodiment of the present invention.

4 is a block diagram showing the configuration of a server device for providing three-dimensional position information according to an embodiment of the present invention.

5 is a block diagram showing the configuration of a terminal device for providing three-dimensional position information according to an embodiment of the present invention.

The present invention relates to a method for providing 3D location information and an apparatus for performing the same, and more particularly to a method for providing 3D location information using altitude information and an apparatus for performing the same.

Location Based Service (LBS) is a technology that measures the location of a mobile terminal using a mobile communication network or satellite signal and provides various information services related to the measured location.

In order to use the location-based service, it is essential to know the location of the wireless communication terminal. At this time, the technique of identifying the position of the wireless communication terminal is called a radio positioning technology.

Wireless positioning technology is divided into a network based method using a base station received signal and a terminal based method using a Global Positioning System (GPS) signal. However, the network-based method has a disadvantage in that it is difficult to accurately measure the propagation time due to audible problems in the process of signal propagation on the ground and errors caused by multipaths generated from buildings and terrain. In addition, since the terminal-based method uses GPS satellite signals, accuracy is higher than that of the network-based method. However, there is a problem that the location is unknown in the area where the reception of satellite signals is impossible, that is, underground or inside the building.

Accordingly, "Assisted-GPS" has been proposed as a wireless positioning technology that combines a network-based method and a terminal-based method. Although this technique can be used to estimate the approximate location on the basis of the network in the GPS shadowed area, the network-based approach has a large positioning error, and thus there is still a problem of poor location accuracy.

Meanwhile, the altitude of the current air pressure may be measured using the reference air pressure data received from the base station and the air pressure data measured by the terminal. Inertial navigation devices (GPS / INS) or barometers can be used for altitude measurements. In this case, the inertial navigation system is capable of tracking the position inside the building as well as the altimeter measurement, but it is difficult to be mounted on a terminal used by ordinary people. In addition, the barometer is a means of measuring only the altitude, but the price is cheap, but errors due to weather, temperature, etc. need periodic error correction.

Therefore, it is an object of the present invention to provide a method for providing three-dimensional location information using location information and altitude information acquired using GPS, and an apparatus for performing the same.

In order to achieve the above-described problem, the location information providing method according to a feature of the present invention,
A method for providing location information of a terminal device connected to a mobile communication network, the method comprising: receiving a three-dimensional location information request including two-dimensional GPS location measurement information and barometric pressure measurement information measured by the terminal device from the terminal device; Doing; Confirming building information mapped to two-dimensional GPS location measurement information received from the terminal device by using previously stored building information and information mapped to two-dimensional location information of the building information; By using the information of the height information of the reference floor of each building information and the height information between the floors according to the elevation rise to determine the height between the floors mapped to the altitude information converted from the barometric pressure measurement information received from the terminal device Estimating floor information on the building information; Calculating three-dimensional location information of the terminal device based on the mapped building information and the floor information; And transmitting the three-dimensional location information response including the calculated three-dimensional location information of the terminal device to the terminal device.

Location information providing apparatus according to a feature of the present invention,
An apparatus for providing location information of a terminal device connected to a mobile communication network, the apparatus comprising: mapping information of previously stored buildings and two-dimensional location information of the building information, elevation information of a reference floor of each building information, and A storage unit which stores information obtained by mapping height information between floors according to an elevation; And a three-dimensional location information request including two-dimensional GPS location measurement information and barometric pressure measurement information measured by the terminal device, and calculated using the mapped information stored in the storage unit. And a control unit for transmitting the 3D location information response including the 3D location information of the device to the terminal device.
The controller may include: a building information acquisition module configured to obtain building information mapped to two-dimensional GPS position measurement information measured by the terminal device from the storage unit; An altitude information conversion module for converting the barometric pressure measurement information measured by the terminal device into altitude information; A floor information estimating module for obtaining interfloor height information mapped to the altitude information converted by the altitude information converting module from the storage unit and estimating the floor information of the building information using the interfloor height information; And a location information calculation module configured to calculate 3D location information of the terminal device based on the building information acquired by the building information acquisition module and the floor information estimated by the floor information estimation module.

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DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise. In addition, the terms “… unit”, “… unit”, “module”, “block”, etc. described in the specification mean a unit that processes at least one function or operation, which is hardware or software or a combination of hardware and software. It can be implemented as.

Now, a method of providing 3D location information and an apparatus for performing the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall network configuration for providing three-dimensional location information according to an embodiment of the present invention.

According to FIG. 1, the network configuration for providing 3D location information includes a terminal device 100, a base station 200, a mobile communication network 300, an SLP server 400, a 3D location information providing server 500, and a mobile location. A center 600, an LBSP server 700, a three-dimensional map server 800, and a content provider 900.

The terminal device 100 provides its GPS location information and barometric pressure information under the control of the mobile location center 600 when collecting location information. In addition, it is possible to receive and display three-dimensional position information calculated based on the provided GPS position information and barometric pressure information. This will be described in more detail with reference to FIG. 5 below.

The base station, that is, the base transceiver station (BTS) 200, is a device configured as a wireless transmitter / receiver. The base station 200 transmits / receives voice calls and packet data with a terminal 100 in a radio access network (RAN) through a wireless link.

The mobile communication network 300 is connected to the terminal device 100 and the corresponding base station 200 of the terminal device. The mobile communication network 300 transmits information to the terminal device 100 or receives information from the terminal device 100 and transmits the information to the LBS nodes 400, 500, and 600.

The mobile communication network 300 is implemented in a W-CDMA network in one embodiment, which includes the RNC 301, SGSN 303, and GGSN 305, which is generally known to those skilled in the art. Omit.

The SLP server 400 accesses and uses network resources for GPS-based location tracking for the terminal device 100. SLP stands for Secure User Plane Location (SUPL) Platform. Here, SUPL uses a user plane bearer to transmit location information necessary for calculating the location of the terminal device 100.

The 3D location information providing server 500 calculates and manages 3D location information by using the GPS location information and the barometric pressure information transmitted from the terminal device 100. This will be described in more detail with reference to FIG. 4 below.

The mobile location center 600 is a central system of a location based service (LBS) network, and collects, manages, and controls all kinds of location information in the location based service. The mobile location center 600 serves as a gateway for transmitting the 3D location information of the terminal device 100 calculated by the 3D location information providing server 500 to the LBSP server 700.

The LBSP server 700 provides a standard interworking interface with equipment requiring 3D location information and performs service logic processing for location based services such as authentication / billing. The LBSP server 700 attempts to locate the terminal device 100 at the request of the subscriber or the content provider 900.

The 3D map server 800 stores and manages 3D map information in consideration of the terrain and the height information of the building. The 3D map server 800 is located at the same level as a GISP (Geographic Information Service Platform, not shown in the drawing) that provides geographic information and stores a floor map of a building.

The content provider 900 provides various location based services using 3D location information.

Now, a process of providing 3D location information through data transfer between nodes constituting the location-based service network will be described.

2 is a flowchart illustrating a process of providing 3D location information according to an embodiment of the present invention.

According to FIG. 2, in response to a request of a subscriber or a content provider (900 of FIG. 1), the LBSP server 700 requests a location inquiry to the mobile location center 600 (S101).

The mobile location center 600 transmits a location lookup request of the LBSP server 700 to the SLP server 400 (S103).

The SLP server 400 requests a location measurement to the terminal device 100 using a radio resource LCS protocol (hereinafter referred to as “RRLP”) measurement location request message (S105).

The terminal device 100 measures the GPS position information and the barometric pressure (S107 and S109), and transmits it to the SLP server 400 by including it in the RRLP measurement position response message (S111). In this case, the RRLP measurement location response message may designate a specific field and include reference BTS identity information in the specified specific field.

The SLP server 400 transmits the GPS location information and the barometric pressure information of the terminal apparatus 100 received in step S111 to the 3D location information providing server 500 to request 3D location information (S113). In this case, the SLP server 400 transmits the reference BTS identification information together in the RRLP measurement location response message.

The 3D location information providing server 500 calculates (S115) and stores the 3D location information using the GPS location information and the barometric pressure information received in step S113 (S117). Then, the 3D location information calculated in step S115 is transferred to the SLP server 400 to respond to the 3D location information request (S119).

The SLP server 400 transmits the 3D location information received in step S119 to the mobile location center 600 and responds to the location inquiry request (S121).

The mobile location center 600 transmits the 3D location information received in step S121 to the LBSP server 700 and responds to the location inquiry request (S123).

Next, the process of calculating the 3D location information by the 3D location information providing server 500 will be described in detail.

3 is a flowchart illustrating a three-dimensional position information calculation process according to an embodiment of the present invention.

According to FIG. 3, the GPS position information and the barometric pressure information are received from the terminal device 100 (S201). In this case, identification information of the corresponding base station of the terminal device 100 may be received together.

Next, the building information of the current location is checked using the GPS location information of the terminal device (S203). The building information mapped to the GPS location information of the terminal device is checked from previously stored building information mapped to the 2D location information. Here, the GPS location information is location information in a two-dimensional form.

Next, the altitude information of the terminal device is converted using the barometric pressure information of the terminal device (S205). Here, the conversion of the altitude information is used to change the air pressure as the altitude rises relative to the sea level, which will be omitted by those skilled in the art will be omitted.

In this case, the base station identification information received in step may be used for error correction of the converted altitude information. In other words, after measuring the altitude of the base station confirmed through the base station identification information, the altitude of the terminal device can be accurately measured by comparing the air pressure of the terminal device to the air pressure of the base station. By referring to the barometric pressure information of the base station, it is possible to correct the error due to season and weather.

Next, using the converted altitude information of the terminal device to estimate the floor information of the building identified in step S203 (S207). The height between floors mapped to the converted altitude information is checked by using the previously stored mapping information of the height and the height between floors of the building, and the floor information is estimated.

Finally, the 3D location information of the terminal device is calculated using the building information confirmed in step S203 and the floor information estimated in step S207 (S209).

Next, the configuration of the server device and the configuration of the terminal device for implementing the above-described three-dimensional location information will be described.

Here, the server device means a device or program for operating management software for controlling the connection to all or part of the communication network and the connection to the resources of the communication network to other terminals on the communication network (mobile communication network). In addition, the terminal device refers to a point at which information is input / output in a communication network (mobile communication network), or a device for making or viewing data in a digital data transmission system or a general terminal device that performs a function for sending or receiving data. it means.

First, referring to the server device, FIG. 4 is a block diagram showing the configuration of a server device for providing three-dimensional position information according to an embodiment of the present invention. In this case, the server apparatus is the same as the 3D location information providing server of FIGS. 1 and 2.

According to FIG. 4, the server device 500 includes a first interface unit 510, a second interface unit 520, a storage unit 530, and a controller 540.

The first interface unit 510 is connected to the SLP server 400 to perform data transmission / reception processing with the SLP server 400.

The second interface unit 520 is connected to the mobile location center 600 to perform data transmission / reception with the mobile location center 600.

The storage unit 530 stores various data related to providing 3D location information. The storage unit 530 includes a building information DB 532, a floor information DB 534, and a location information DB 536.

At this time, the building information DB 532 stores mapping information between the two-dimensional location information and the building information in the two-dimensional location information.

The floor information DB 534 stores mapping information between elevation information of each reference floor of each building information stored in the building information DB 532 and height information between floors according to elevation.

The location information DB 536 stores two-dimensional location information corresponding to the GPS location information of the terminal device 100 and three-dimensional location information of the terminal device 100.

The controller 540 controls the overall processing of the server device 500 and controls the calculation, storage, and output of the 3D location information.

The controller 540 stores the GPS position information received through the first interface unit 510 in the position information DB 536 as two-dimensional position information.

The controller 540 calculates the 3D location information and transmits the 3D location information to the mobile location center through the second interface unit 520.

The module configuration divided into functions of the controller 540 includes a building information acquisition module 542, an elevation information conversion module 544, a floor information estimation module 546, and a location information calculation module 548.

The building information acquisition module 542 retrieves the building information DB 532 and acquires building information mapped to the GPS location information received through the first interface unit 510.

The altitude information conversion module 544 converts the altitude information using the barometric pressure information received through the first interface unit 510. The error of the converted altitude information is corrected by using the air pressure change of the base station.

The floor information estimation module 546 estimates the floor information according to the building information and the altitude information output from the building information acquisition module 542 and the altitude information conversion module 544 with reference to the floor information DB 534.

The location information calculation module 548 calculates three-dimensional location information from the building information and the floor information output from the building information acquisition module 542 and the floor information estimation module 546. The calculated three-dimensional positional information is stored in the positional information DB 536.

Next, referring to the terminal device, FIG. 5 is a block diagram illustrating a configuration of a terminal device providing 3D location information according to an exemplary embodiment of the present invention.

According to FIG. 5, the terminal device 100 includes a GPS receiver 101, an air pressure measurer 103, a memory 105, a wireless transmitter / receiver 107, a display 109, and a controller 111.

The GPS receiver 101 receives a GPS radio wave from a GPS satellite. The GPS receiver 110 calculates the location information of the terminal device using the navigation data included in the GPS radio wave and transmits the location information to the controller 111. The calculated positional information is stored in the memory 105.

The air pressure measuring unit 103 measures the air pressure at the current position.

The memory 105 stores the positional information output from the GPS receiver 101 and the atmospheric pressure information output from the atmospheric pressure measurement unit 103. Also, map data for outputting three-dimensional location information is stored.

The wireless transmission / reception unit 107 wirelessly transmits and receives a location measurement request and response according to the SLP server and the RRLP protocol.

The wireless transmitter / receiver 107 may wirelessly receive the 3D location information from the mobile location center 600.

The display unit 109 outputs the map data to which the 3D location information received by the wireless transmitter / receiver 107 is mapped so that the user can check it.

The control unit 111 is connected to the GPS receiver 101, the air pressure measuring unit 103, the memory 105, the wireless transmitting / receiving unit 107, and the display unit 109 to perform location measurement request and response processing according to the RRLP protocol. And a series of processes for receiving and outputting three-dimensional position information.

When the RRLP measurement position request message is output from the wireless transmitter / receiver 107, the controller 111 activates the GPS receiver 101 and the air pressure measurer 103 to measure the GPS position information and the air pressure information.

The control unit 111 includes the measured GPS position information and the barometric pressure information in the RRLP measurement position response message and outputs it to the wireless transmission / reception unit 107. In this case, identification information of the base station at the current location may be included in the RRLP measurement location response message.

The controller 111 maps the three-dimensional position information output from the wireless transmitter / receiver 107 to map data of the memory 105 and outputs it to the display unit 109.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

Thus, according to the embodiment of the present invention, it is possible to track detailed location information up to the building information of the current location and the floor information of the building.

In addition, it is possible to track the location of the shadow area that is impossible to receive GPS signal, that is, underground or inside the building.

In addition, since the position information is calculated using the altitude information converted using the air pressure change of the base station at the current position, the error of the position information can be minimized.

Claims (9)

delete In the method for providing location information of a terminal device connected to a mobile communication network, Receiving from the terminal device a three-dimensional location information request including two-dimensional GPS measurement information and barometric pressure measurement information measured by the terminal device; Confirming building information mapped to two-dimensional GPS location measurement information received from the terminal device by using previously stored building information and information mapped to two-dimensional location information of the building information; By using the information of the height information of the reference floor of each building information and the height information between the floors according to the elevation rise to determine the height between the floors mapped to the altitude information converted from the barometric pressure measurement information received from the terminal device Estimating floor information on the building information; Calculating three-dimensional location information of the terminal device based on the mapped building information and the floor information; And Transmitting the 3D location information response including the calculated 3D location information to the terminal device. Location information providing method comprising a. The method of claim 2, Estimating floor information for the building information, Converting the barometric pressure measurement information into altitude information; Extracting identification information of a corresponding base station of the terminal device from the 3D location information request; Correcting an error of altitude information of the terminal device using barometric pressure measurement information and altitude measurement information measured for the corresponding base station; And Confirming the height between floors mapped to the error-corrected altitude information of the terminal and estimating the floor information using the height between the floors; Location information providing method comprising a. The method according to claim 2 or 3, GPS location measurement information, barometric pressure measurement information and the identification information of the base station measured by the terminal device is obtained via the radio resource location service protocol measurement location response message received from the terminal device. An apparatus for providing location information of a terminal device connected to a mobile communication network, A storage unit for storing the information stored in each of the previously stored building information and the two-dimensional location information of the building information, the altitude information of the reference floor of each building information and the height information between floors according to the elevation ; And The terminal device receiving a three-dimensional location information request including two-dimensional GPS position measurement information and barometric pressure measurement information measured by the terminal device, and using the mapped information stored in the storage unit; And a control unit for transmitting the 3D location information response including the 3D location information of the terminal device to the terminal device. The control unit, A building information acquisition module for obtaining building information mapped to two-dimensional GPS location measurement information measured by the terminal device from the storage unit; An altitude information conversion module for converting the barometric pressure measurement information measured by the terminal device into altitude information; A floor information estimating module for obtaining interfloor height information mapped to the altitude information converted by the altitude information converting module from the storage unit and estimating the floor information of the building information using the interfloor height information; And A location information calculation module for calculating three-dimensional location information of the terminal device based on the building information acquired by the building information acquisition module and the floor information estimated by the floor information estimation module Location information providing device comprising a. The method of claim 5, GPS location measurement information and barometric pressure measurement information measured by the terminal device, which is connected to a server performing GPS location positioning of the terminal device, obtained by receiving a radio resource location service protocol measurement location response message from the terminal device. A first interface unit to receive a message from the server; And A second interface unit connected to a server providing a location based service for the terminal device and transmitting the calculated 3D location information to the server Location information providing device further comprising. The method of claim 6, The first interface unit, Position information providing device for receiving the identification information of the corresponding base station of the terminal device in addition to the GPS position measurement information and the barometric pressure measurement information measured by the terminal device. delete The method of claim 7, wherein The altitude information conversion module, Position information providing device for correcting the altitude information error of the terminal using the barometric pressure measurement information and the altitude measurement information measured for the base station.

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