KR100777817B1 - Method and system for providing gps field test to mobile communication terminal by using 3d geographic information - Google Patents

Abstract

A method and a system for providing a GPS field test to a mobile station using 3-dimensional geographical information are provided to make fair verification for MS(Mobile Station) positioning performance in more diverse environments by providing various simulated GPS environments using 3-D geographical information. A GPS field test server loads 3-D geographical information from a 3-D geographical information DB in order to carry out a GPS field test for an MS(S500). The GPS field test server establishes the moving path and speed of the MS and processes them into geographical field test information(S502). The GPS field test server transmits the processed geographical field test information to a GPS signal generator and a BS(Base Station) signal generator so as to create a simulated GPS signal and a simulated BS signal respectively(S504). As the GPS field test server sends a GPS positioning signal to the MS, the MS receives the simulated BS signal from the BS signal generator and requests a PDE(Position Determination Entity) to provide aiding data(S506). Based on the provided aiding data, the MS searches for the simulated GPS signal, calculates its own location, and transmits the calculated location information to the GPS field test server(S508). The GPS field test server maps the location information on the map, verifies the positioning performance of the MS, based on the location information, and displays it(S510).

Description

Method and System for Providing GPS Field Test to Mobile Communication Terminal by Using 3D Geographic Information}

1 is a simplified diagram showing a system for providing a GPS field test to a mobile communication terminal using three-dimensional geographic information according to a preferred embodiment of the present invention;

2 is a diagram schematically illustrating an internal structure of a GPS field test server for providing a GPS field test to a mobile communication terminal using three-dimensional geographic information according to a preferred embodiment of the present invention;

3 is a diagram schematically showing the internal structure of a GPS signal generator for generating a simulated GPS signal using three-dimensional geographic information according to a preferred embodiment of the present invention;

4 is a diagram schematically illustrating an internal structure of a base station signal generator for generating a simulated base station signal using three-dimensional geographic information according to a preferred embodiment of the present invention;

5 is a flowchart illustrating a process of providing a GPS field test to a mobile communication terminal using three-dimensional geographic information according to a preferred embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

100: mobile communication terminal 110: GPS field test server

112: 3D geographic database 120: GPS signal generator

130: base station signal generator

140: Position Determination Entity (PDE)

210: control unit 220: memory unit

230: display unit 240: key input unit

250: network interface card 260: database server

310: microprocessor 320: internal memory

330: GPS signal generator 410: microprocessor

420: internal memory 430: base station signal generation unit

The present invention relates to a method and system for providing a GPS field test to a mobile communication terminal using three-dimensional geographic information. More specifically, a simulated GPS signal and a simulated base station signal are generated for a GPS field test using a 3D geographic database, and a position determination entity (PDE) is called according to a positioning request of a mobile communication terminal. The present invention relates to a method and a system for generating auxiliary data by transmitting a simulated base station signal, and receiving auxiliary data from a PDE to map a positioning result of a mobile communication terminal to a map.

The mobile communication system has been developed through the first generation analog AMPS (Advanced Mobile Phone System) method and the second generation cellular (Cellular) / Personal Communication Service (PCS) method. The third generation mobile communication system IMT-2000 (International Mobile Telecommunication 2000), which is enacted as a standard in ITU-R, is commercially available. IMT-2000 is CDMA 2000 1X, 3X, EV-DO, Wideband CDMA (WCDMA), etc., and is used in IS-95A and IS-95B networks by using the IS-95C network that has evolved from the existing IS-95A and IS-95B networks. It is a service that can provide wireless Internet at a transmission speed of up to 144 Kbps, much faster than the supportable data transfer rate of 14.4 Kbps or 56 Kbps. In particular, by using IMT-2000 service, it is possible to provide various multimedia services (AOD, VOD, etc.) at a faster speed as well as improving existing voice and wireless broadcasting service (WBS) service quality.

In addition, recently, as a part of overcoming the limitations in providing the wireless Internet service of the above-described mobile communication system, a portable Internet system (HPi: High Speed) capable of using high-speed wireless Internet service at a low cost while moving Development of the Portable Internet System or WiBro: Wireless Broadband Internet System. The portable internet system uses various types of portable terminals such as laptops, PDAs, and handheld PCs to access various types of information and contents by accessing the Internet in indoor and outdoor stationary environments and mobile environments at walking speeds and low to medium speeds. It is a service. In addition, it enables mobile subscribers to use the wireless Internet while moving at a speed of 60 km / h, provides a downlink transmission speed of 24 Mbps, and downlink transmission of 50 Mbps by applying a multiple input multiple output (MIMO) system. It is an IP (Internet Protocol) based wireless data system that can provide speed.

The mobile subscriber can use the mobile communication system to carry voice communication while carrying the mobile communication terminal, and wirelessly access the Internet through the mobile communication system using the wireless Internet technology to transmit text, images, Multimedia data services such as voice or video are provided. The wireless Internet allows a mobile subscriber to search and download a variety of information by accessing the Internet using a mobile communication terminal without time or space constraints.

Recently, with the development of the Internet and multimedia data technology, a content provider (CP) that provides various contents such as multimedia communication, network game, and video game has emerged, and various services provided by the content provider are provided as mobile communication terminals. The number of mobile subscribers to use has increased.

On the other hand, location-based services (LBS) among various wireless Internet services using mobile communication terminals have gained much attention due to their wide availability and convenience. The location-based service refers to a communication service that detects a location of a mobile communication terminal and provides additional information related to the identified location. Location-based services include requests for rescue, response to crime reports, geographic information systems (GIS) for providing proximity information, differential pricing of mobile telecommunications based on location, traffic information, vehicle navigation and logistics control, and location-based CRM It is used in various fields and situations such as customer relationship management.

With the development of location-based services, mobile communication terminals equipped with GPS functions are gradually increasing, and navigation services using built-in GPS functions are being activated.

For this navigation service, more than a certain level of guarantee is necessary for the GPS positioning performance of the mobile communication terminal in various environments (for example, downtown area, riverside, open area, tunnel area, mountain area, etc.). The conventional navigation service provider has to move to an area where poor positioning performance frequently occurs and drive the GPS function of the mobile communication terminal in a real vehicle to verify the positioning performance of the GPS function while moving a path having poor positioning performance.

However, the above conventional methods not only consume a lot of time and physical resources, but also require the need to go directly to various problematic environments and perform tests in the same place every time verifying the positioning performance of the GPS function. Even when the GPS satellites move, there was a problem in that the positioning performance was not able to proceed with the fair verification.

In order to solve this problem, the present invention generates a simulated GPS signal and a simulated base station signal for the GPS field test using a three-dimensional geographic database, and according to the positioning request of the mobile communication terminal (Position Determination Entity, A method and system for generating auxiliary data by transmitting a simulated base station signal to a PDE), receiving auxiliary data from the PDE, and mapping the positioning result of the mobile communication terminal to a map. Its purpose is to provide.

In order to achieve this object, according to a first object of the present invention, a method for providing a GPS field test to a mobile communication terminal using three-dimensional geographic information, comprising: (a) 3 for the GPS field test of the mobile communication terminal Loading dimensional geographic information, setting a moving path and a moving speed of the mobile communication terminal to process the field test geographic information; (b) transmitting field test geographic information to the GPS signal generator and the base station signal generator; (c) transmitting a GPS positioning signal to a mobile communication terminal; And (d) receiving the location information from the mobile communication terminal and mapping it to a map, and displaying the positioning performance of the mobile communication terminal based on the location information. A method for providing a GPS field test to a mobile communication terminal is provided.

According to a second object of the present invention, there is provided a method for providing a GPS field test to a mobile communication terminal using three-dimensional geographic information, comprising: (a) loading three-dimensional geographic information for a GPS field test of a mobile communication terminal; Loading and setting a moving path and a moving speed of the mobile communication terminal to process the field test geographic information; (b) transmitting field test geographic information to the GPS signal generator and the base station signal generator; (c) transmitting a GPS positioning signal to a mobile communication terminal; And (d) receiving location information from a Position Determination Entity (hereinafter referred to as 'PDE') and mapping it to a map, and displaying positioning performance of the mobile communication terminal based on the location information. The present invention provides a method for providing a GPS field test to a mobile communication terminal using three-dimensional geographic information.

According to a third object of the present invention, in a system for providing a GPS field test to a mobile communication terminal using three-dimensional geographic information, a field in which a moving path and a moving speed of the mobile communication terminal are set in three-dimensional geographic information. A GPS field test server for generating test geographic information, receiving location information from a mobile communication terminal and mapping it to a map in real time, and displaying positioning performance including positioning accuracy and positioning speed of the mobile communication terminal; A three-dimensional geographic information database for classifying and storing latitude information, longitude information, three-dimensional feature information, and base station information corresponding to geographic information for a GPS field test; A GPS signal generator which receives field test geographic information, generates a simulated GPS signal on each moving path in real time, and transmits it in a GPS frequency band; A base station signal generator configured to receive field test geographic information and generate and transmit information of a real base station existing in each moving path of a mobile communication terminal as a simulated base station signal; And a Position Determination Entity (hereinafter referred to as 'PDE') for providing auxiliary data for acquiring a GPS signal of a corresponding region by a positioning request from a mobile communication terminal. A system for providing a GPS field test to a mobile communication terminal using geographic information is provided.

According to a fourth object of the present invention, a GPS field test server for providing a GPS field test to a mobile communication terminal using three-dimensional geographic information, wherein the GPS field test is controlled by controlling all components of the GPS field test server. Control to generate field test geographic information that sets the movement path and the moving speed of the mobile communication terminal in the three-dimensional geographic information, and transmit the field test geographic information to the GPS signal generator and the base station signal generator, and A control unit which receives the location information and controls to map the map in real time; A memory unit that temporarily stores data processed by the controller or stores a program for performing a function of the GPS field test server, and stores data necessary for operation of the GPS field test server; A panel or monitor using a light emitting diode (LED) can provide relevant information so that the administrator who manages the GPS field test server can check the operation status of the GPS field test server or the processing status according to the error. A display unit configured to output a map, display a map in which location information received from the mobile communication terminal is mapped, and display positioning performance including positioning accuracy and positioning speed of the mobile communication terminal; A key input unit used by the administrator to load 3D geographic information of a test area for performing a GPS field test, and to set a moving path and a moving speed of a mobile communication terminal; A network interface card for providing a communication interface for the GPS field test server to communicate with a GPS signal generator, a base station signal generator, and a position determination entity (hereinafter referred to as a 'PDE'); And storing, retrieving, deleting, editing, and adding three-dimensional geographic information and base station information including latitude information, longitude information, and terrain of a test area for GPS field test from the three-dimensional geographic information database. It provides a GPS field test server for providing a GPS field test to the mobile communication terminal using the three-dimensional geographic information, characterized in that it comprises a.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

In addition, hereinafter, the present invention will be described under the assumption that a code division multiple access (CDMA) 2000 system is used as the mobile communication system. However, the CDMA 2000 system is a system designated for convenience of description and the mobile communication system used in the present invention is not limited thereto.

1 is a diagram schematically illustrating a system for providing a GPS field test to a mobile communication terminal using three-dimensional geographic information according to a preferred embodiment of the present invention.

According to a preferred embodiment of the present invention, a system for providing a GPS field test to a mobile communication terminal using three-dimensional geographic information includes a mobile communication terminal 100, a GPS field test server 110, and a three-dimensional geographic information database 112. , GPS signal generator 120, base station signal generator 130, and position determination entity (PDE: Position Determination Entity (PDE) 140).

The mobile communication terminal 100 is wirelessly connected to the mobile communication network 110 to provide a voice call function for performing a normal voice call by wireless communication with another mobile communication terminal or a landline phone, and also includes a short message, a multimedia message, and the like. Mobile communication terminal that can transmit and receive.

Here, the mobile communication terminal may be a PDA (Personal Digital Assistant), cellular phone, PCS (Personal Communication Service) phone, Hand-Held PC (GSM), Global System for Mobile (GSM) phone, W-CDMA (Wideband CDMA) It may be a phone, a CDMA-2000 phone, a mobile broadband and system (MBS) phone, and the like. The type may be determined according to the type of mobile communication system constituting the mobile communication network 110. Here, MBS phone refers to a mobile phone to be used in the fourth generation system currently being discussed.

In the present invention, the mobile communication terminal 100 is equipped with a GPS (Global Positioning System) function, and based on the simulated base station signal received from the base station signal generator 130, auxiliary data for calculating position information in the PDE 140. Request (Aiding Data).

GPS field test server 110 according to a preferred embodiment of the present invention includes a three-dimensional geographic information database 112, and the GPS signal generator 120, the base station signal generator 130 and the PDE 140 and wired or wireless Connected to the GPS signal generator 120 and the base station signal generator 130 by loading the three-dimensional geographic information of the area to test the GPS positioning function of the mobile communication terminal 100 (Loading), the loaded three-dimensional geography The information is processed into field test geographic information in which the moving path and the moving speed of the mobile communication terminal 100 are set and provided to the GPS signal generator 120 and the base station signal generator 130.

In addition, the GPS field test server 110 maps the GPS positioning result calculated by the mobile communication terminal 100 to a map, and displays the mapping result so that the positioning accuracy and positioning speed of the mobile communication terminal 100 are displayed. Perform verification of positioning performance.

According to a preferred embodiment of the present invention, the three-dimensional geographic information database 112 classifies and classifies base station information corresponding to latitude information, longitude information, three-dimensional feature information, and geographic information of a test area for GPS field test. As a stored database, the GPS field test server 110 stores three-dimensional geographic information for providing to the GPS signal generator 120 and the base station signal generator 130. Here, a database refers to a data structure implemented in a storage space of a computer system by using a database management system (DBMS) program, and data storage for freely searching, deleting, editing, and adding data. It means form. Such a database uses a relational database management system (RDBMS) such as Oracle, Informix, Sybase, Microsoft Structured Query Language (MS SQL) or DB2 for the purpose of the present invention. Hash, B-Tree, Trie, Finite-State Automata (FSA), and Finite-State Tranducer (FST) can be used to speed up the database. It has appropriate fields or elements to perform functions such as storing, retrieving, deleting, editing, and adding data.

The GPS signal generator 120 according to an exemplary embodiment of the present invention receives field test geographic information, generates a simulated GPS signal on each moving path, and transmits it to the GPS frequency band.

In the present invention, since the GPS signal generator 120 generates and transmits a simulated GPS signal similar to the GPS signal received when the mobile communication terminal 100 moves at a set moving speed along the moving path set in the field test geographic information. Although the mobile communication terminal 100 is fixed but has the same effect as moving, the GPS signal generator 120 requests and receives navigation information of the GPS satellites from the PDE 140 and receives the GPS satellites from the received navigation information. It calculates the orbit information and the moving speed of, and simulates similar to the GPS signal received by the mobile communication terminal 100 moving at the set moving speed along the moving path set in the field test geographic information based on the calculated orbit information and the moving speed. Generate and send a GPS signal.

In addition, the satellite distribution of the area corresponding to the field test geographic information is calculated based on the GPS auxiliary information such as the GPS satellite position information and the GPS satellite moving speed on the moving path set in the field test geographic information, and the field test is performed based on the satellite distribution. It transmits a simulated GPS signal corresponding to the movement path according to the movement speed of the mobile communication terminal 100 set in the geographic information. That is, in order to generate the simulated GPS signal, the GPS signal generator 120 searches for information on the current GPS satellite distribution of the region corresponding to the field test geographic information, and simulates the retrieved GPS satellite distribution in conjunction with the field test geographic information. Generate a GPS signal.

The base station signal generator 130 according to a preferred embodiment of the present invention receives field test geographic information and generates and transmits information on each base station on a moving path as a simulated base station signal.

In the present invention, since the base station signal generator generates and transmits a simulated base station signal including a system identifier, a network identifier, a base station identifier, and reference pseudo noise of each base station in the movement path according to the movement speed set in the field test geographic information. The mobile terminal 100 has the same effect as the actual movement.

According to a preferred embodiment of the present invention, the PDE 140 provides auxiliary data for acquiring a GPS signal of a corresponding area in response to a positioning request of the mobile communication terminal 100. In the case of the MS-Assisted GPS method, the final position is calculated. In the case of the MS-Based GPS system, only the auxiliary data is provided so that the mobile communication terminal 100 calculates the final position.

In the present invention, the simulated base station signal is received from the mobile communication terminal 100 to generate auxiliary data based on the base station information in the field test geographic information and provide it to the mobile communication terminal 100.

2 is a diagram schematically illustrating an internal structure of a GPS field test server for providing a GPS field test to a mobile communication terminal using three-dimensional geographic information according to a preferred embodiment of the present invention.

According to a preferred embodiment of the present invention, the GPS field test server 110 for providing a GPS field test to a mobile communication terminal using three-dimensional geographic information includes a control unit 210, a memory unit 220, a display unit 230, It is configured to include a key input unit 240, a network interface card 250 and a database server 260.

The controller 210 controls all components of the GPS field test server 110 to generate field test geographic information for setting the moving path and the moving speed of the mobile communication terminal 100 in the 3D geographic information for the field test. Control to transmit the field test geographic information to the GPS signal generator 120 and the base station signal generator 130, and to receive the location information from the mobile communication terminal 100 and map it to a map in real time. . To this end, the control unit 210 includes a computing module such as a microprocessor.

The memory unit 220 temporarily stores data processed by the controller 210 or stores a program for performing a function of the GPS field test server 110, and stores data necessary for the operation of the GPS field test server 110. Save it. To this end, the memory unit 220 is a nonvolatile memory for storing a predetermined program and data, and the contents are in EEPROM (Electrically Erasable and Programmable Read Only Memory) or block units that can modify the contents in byte units. It includes a flash memory that can modify the flash memory (SDRAM) to temporarily store the generated data (SDRAM).

The display 230 may allow an administrator who manages the GPS field test server 110 to check an operation process or an error of the GPS field test server 110 and the processing status according to key input from the key input unit 240. The relevant information is output to a panel or monitor using a light emitting diode (LED).

In addition, the display unit 230 displays a map in which the location information received from the mobile communication terminal 100 is mapped in real time, and displays a verification result for positioning performance such as positioning accuracy and positioning speed of the mobile communication terminal 100. do.

The key input unit 240 is used for the administrator to manually input data or commands to operate the GPS field test server 110. In the present invention, the administrator loads the 3D geographic information for the field test, and is used to set the moving path and the moving speed of the mobile communication terminal 100.

The network interface card 250 is a communication module that provides a communication interface for the GPS field test server 110 to communicate with the GPS signal generator 120, the base station signal generator 130, and the PDE 140.

The database server 260 is implemented as a network server to control data input and output of the 3D geographic information database 112. That is, the database server 260 stores, retrieves, and deletes, from the three-dimensional geographic information database 112, three-dimensional geographic information and base station information including the latitude information, longitude information, and terrain of the test area for the GPS field test. Edit and add.

3 is a diagram schematically showing the internal structure of a GPS signal generator for generating a simulated GPS signal using three-dimensional geographic information according to a preferred embodiment of the present invention.

According to a preferred embodiment of the present invention, the GPS signal generator 120 for generating a simulated GPS signal using three-dimensional geographic information includes a microprocessor 310, an internal memory 320, a GPS signal generator 330, and an antenna ( 340).

The microprocessor 310 according to the preferred embodiment of the present invention generates the GPS signal generator 330 based on the field test geographic information received from the GPS field test server 110 by controlling all components of the GPS signal generator. Control to send one GPS signal to the GPS frequency band.

The internal memory 320 according to a preferred embodiment of the present invention stores a program for temporarily storing data processed by the microprocessor 310 or performing a function of the GPS signal generator 120, and the GPS signal generator 120. Save the data necessary for the operation of). To this end, the internal memory 320 is a nonvolatile memory for storing a predetermined program and data, and the contents are stored in EEPROM (Electrically Erasable and Programmable Read Only Memory) or block units that can modify the contents in byte units. It includes a flash memory that can modify the flash memory (SDRAM) to temporarily store the generated data (SDRAM).

The GPS signal generator 330 according to an exemplary embodiment of the present invention generates a simulated GPS signal reflecting an environment in each moving path according to the moving path and the moving speed of the mobile communication terminal 100 set in the field test geographic information. And transmits a simulated GPS signal in the GPS frequency band.

4 is a diagram schematically illustrating an internal structure of a base station signal generator for generating a simulated CDMA signal using three-dimensional geographic information according to a preferred embodiment of the present invention.

The microprocessor 410 according to the preferred embodiment of the present invention controls all components of the base station signal generator to generate the base station signal generator 430 based on the field test geographic information received from the GPS field test server 110. Control to transmit a single base station signal.

The internal memory 420 according to an exemplary embodiment of the present invention stores a program for temporarily storing data processed by the microprocessor 410 or performing a function of the base station signal generator 130, and the base station signal generator 130. Save the data necessary for the operation of). To this end, the internal memory 420 is a nonvolatile memory for storing predetermined programs and data. The internal memory 420 is an electronically erasable and programmable read only memory (EEPROM) or a block unit that can modify contents in byte units. It includes a flash memory that can modify the flash memory (SDRAM) to temporarily store the generated data (SDRAM).

The base station signal generator 430 according to the preferred embodiment of the present invention simulates base station signal for simulating actual base station information for each moving path according to the moving path and the moving speed of the mobile communication terminal 100 set in the field test geographic information. Create and send with.

5 is a flowchart illustrating a process of providing a GPS field test to a mobile communication terminal using three-dimensional geographic information according to a preferred embodiment of the present invention.

The GPS field test server 110 loads 3D geographic information for the GPS field test of the mobile communication terminal 100 from the 3D geographic information database 112 (S500).

The GPS field test operator sets a test area for the GPS field test of the mobile communication terminal 100 and transmits the 3D geographic information of the test area set in the 3D geographic information database 112 to the GPS field test server 110. Load.

When loading of the 3D geographic information from the 3D geographic information database 112 is completed, the moving path and the moving speed of the mobile communication terminal 100 are set and processed into field test geographic information (S502).

The operator of the GPS field test server 110 sets the moving path and the moving speed of the mobile communication terminal 100 in the loaded 3D geographic information so that the mobile communication terminal 100 for the GPS field test moves the test area. Provides the same effect.

The GPS field test server 110 transmits the processed field test geographic information to the GPS signal generator 120 and the base station signal generator 130 and controls to generate a simulated GPS signal and a simulated base station signal (S504).

The GPS signal generator 120 and the base station signal generator 130 receiving the field test geographic information from the GPS field test server 110 generate a simulated GPS signal and a simulated base station signal at the starting point of the field test geographic information set by the operator. To send.

In the present invention, the starting point of the field test geographic information refers to a position arbitrarily set by an operator among the moving paths of the mobile communication terminal 100 set in the field test geographic information.

The GPS field test server 110 transmits a GPS positioning signal to the mobile communication terminal 100, and the mobile communication terminal 100 receiving the GPS positioning signal receives the simulated base station signal from the base station signal generator 130. Aiding data is requested to the position determination entity 140 (PDE) (S506).

At the time when the GPS field test server 110 transmits the GPS location positioning signal to the mobile communication terminal 100, the GPS signal generator 120 and the base station signal generator 130 are the mobile communication terminal 100 set in the field test geographic information. The transmission of the simulated GPS signal and the simulated base station signal corresponding to the position on the movement path according to the moving speed of the signal is started.

In the present invention, the field test geographic information is set in the movement speed and the movement path of the mobile communication terminal 100, the GPS received by the mobile communication terminal 100 at each position by calculating the position on the movement path according to the movement speed The GPS signal generator 120 requests and receives the GPS satellite navigation information from the PDE 140, and generates and transmits the signal and the base station signal as the simulated GPS signal and the simulated base station signal. Information and a moving speed, and a simulated GPS signal similar to the GPS signal received by the mobile communication terminal 100 moving at a set moving speed along a moving path set in the field test geographic information based on the calculated track information and moving speed. Create and send

In this case, since the field test geographic information includes base station information including a system identifier, a network identifier, a base station identifier, and reference pseudo noise, a simulated base station signal is generated at each position on a moving path according to the moving speed of the mobile communication terminal 100. The actual base station information that is received is included.

The mobile communication terminal 100 receiving the auxiliary data from the PDE 140 searches for the simulated GPS signal based on the auxiliary data, and the mobile communication terminal 100 receiving the simulated GPS signal calculates its own position. The location information is generated, and the GPS field test server 110 receives the location information from the mobile communication terminal 100 (S508).

The GPS field test server 110 receiving the location information from the mobile communication terminal 100 maps the location information to a map, and based on the location information received from the mobile communication terminal 100, the mobile communication terminal 100. (S510) to verify and display the positioning performance, including the positioning accuracy and the positioning speed.

In the present invention, although the mobile communication terminal 100 receives auxiliary data from the PDE 140 and calculates location information in the mobile communication terminal 100, the operation of the GPS function mounted in the mobile communication terminal 100 is described. According to the method, the PDE 140 may calculate the location information of the mobile communication terminal 100. In this case, the GPS field test server 110 receives the location information from the PDE 140 and maps the location information to the map. Positioning performance, including positioning accuracy and positioning speed of 100, is verified and displayed.

In addition, the mobile communication terminal 100, the GPS signal generator 120 and the base station signal generator 130 in order to prevent receiving the other base station signal and the GPS signal when the position location request of the mobile communication terminal 100 in the present invention; It is preferable to install in an anechoic room or a shield room, and when the mobile communication terminal 100 calculates location information, the GPS field test server 110 may UART between the mobile communication terminal 100 and the GPS field test server 110. Location information may be received using a physical wired connection such as a USB or a separate wireless connection.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

As described above, according to the present invention, the positioning performance of the mobile communication terminal in the corresponding area without using the 3D geographic information of the area that needs verification of the GPS function of the mobile communication terminal to move directly to the corresponding area. By verifying, the mobile service provider providing location-based service improves the temporal and physical efficiency in verifying the positioning performance of the mobile communication terminal for providing the service, and provides various GPS environments by using three-dimensional geographic information. By doing so, there is an effect to make a fair verification of the mobile communication terminal positioning performance in a variety of environments.

Claims (16)

A method for providing a GPS field test to a mobile communication terminal using three-dimensional geographic information, (a) loading three-dimensional geographic information for the GPS field test of the mobile communication terminal, setting a moving path and a moving speed of the mobile communication terminal to process the field test geographic information; (b) transmitting the field test geographic information to a GPS signal generator and a base station signal generator; (c) transmitting a simulated base station signal and a simulated GPS signal to the mobile communication terminal; And (d) receiving location information from the mobile communication terminal and mapping it to a map, and displaying positioning performance of the mobile communication terminal based on the location information; Method for providing a GPS field test to the mobile communication terminal using the three-dimensional geographic information comprising a. The method of claim 1, Step (d) is, (d1) searching for a simulated GPS signal based on the assistance data by the mobile communication terminal receiving the assistance data from a Position Determination Entity (hereinafter referred to as 'PDE'); (d2) generating location information by calculating a location by the mobile communication terminal receiving the simulated GPS signal; And (d3) transmitting the location information to a GPS field test server Method for providing a GPS field test to the mobile communication terminal using the three-dimensional geographic information comprising a. A method for providing a GPS field test to a mobile communication terminal using three-dimensional geographic information, (a) loading three-dimensional geographic information for the GPS field test of the mobile communication terminal, setting a moving path and a moving speed of the mobile communication terminal to process the field test geographic information; (b) transmitting the field test geographic information to a GPS signal generator and a base station signal generator; (c) transmitting a GPS positioning signal to the mobile communication terminal; And (d) receiving location information from a Position Determination Entity (hereinafter referred to as 'PDE') and mapping it to a map, and displaying positioning performance of the mobile communication terminal based on the location information. Method for providing a GPS field test to the mobile communication terminal using the three-dimensional geographic information comprising a. The method of claim 3, wherein Step (d) is, (d1) searching for a simulated GPS signal based on the assistance data by the mobile communication terminal receiving the assistance data from the PDE; (d2) the mobile communication terminal receiving the simulated GPS signal transmitting a search result of the simulated GPS signal to the PDE; And (d3) generating, by the PDE, the location information based on the search result for the simulated GPS signal and transmitting the location information to the GPS field test server; Method for providing a GPS field test to the mobile communication terminal using the three-dimensional geographic information comprising a. The method of claim 4, wherein the search result, Method for providing a GPS field test to the mobile communication terminal using the three-dimensional geographic information, characterized in that the strength and phase difference of the simulated GPS signal. The method according to claim 1 or 3, Step (c) is, (c1) receiving a simulated base station signal from the base station generator by the mobile communication terminal having received the GPS positioning signal; And (c2) requesting assistance data from a Position Determination Entity (PDE) based on the simulated base station signal; Method for providing a GPS field test to the mobile communication terminal using the three-dimensional geographic information comprising a. The method according to claim 1 or 3, Step (b) is, The GPS signal generator and the base station signal generator which have received the field test geographic information generate and transmit a simulated GPS signal and a simulated base station signal at a starting point of the field test geographic information. A method for providing a GPS field test to a mobile terminal. According to claim 1 or 3, wherein the GPS signal generator, The satellite distribution of the area corresponding to the field test geographic information is calculated on the basis of the GPS satellite position information on the moving path and the GPS satellite moving speed set in the field test geographic information, and the field is based on the satellite distribution. Generates a simulated GPS signal corresponding to a moving path according to the moving speed of the mobile communication terminal set in the test geographic information, and transmits the GPS positioning signal to the mobile communication terminal from a GPS field test server. A method for providing a GPS field test to a mobile communication terminal using three-dimensional geographic information, characterized in that for transmitting a simulated GPS signal corresponding to a moving path according to the moving speed of the. The method of claim 1 or 3, wherein the base station signal generator, At the time when the GPS field test server transmits the GPS positioning signal to the mobile communication terminal, a 3D geographic information is used which transmits a simulated base station signal corresponding to a moving path according to the moving speed of the mobile communication terminal. Providing a GPS field test to the mobile terminal. The method of claim 1 or 3, wherein the field test geographic information, Method for providing a GPS field test to the mobile communication terminal using the three-dimensional geographic information, characterized in that it comprises the actual base station information corresponding to the three-dimensional geographic information. A system for providing a GPS field test to a mobile communication terminal using three-dimensional geographic information, Generate field test geographic information that sets the moving path and the moving speed of the mobile communication terminal in the three-dimensional geographic information, receives location information from the mobile communication terminal and maps it to a map in real time. A GPS field test server for displaying positioning performance including positioning accuracy and positioning speed of the terminal; A three-dimensional geographic information database for classifying and storing latitude information, longitude information, three-dimensional feature information, and base station information corresponding to geographic information for the GPS field test; A GPS signal generator which receives the field test geographic information, generates a simulated GPS signal on each moving path in real time, and transmits it in a GPS frequency band; A base station signal generator which receives the field test geographic information and generates and transmits information of an actual base station existing in each movement path of the mobile communication terminal as a simulated base station signal; And Position Determination Entity (hereinafter referred to as 'PDE') for providing auxiliary data (Aiding Data) for acquiring a GPS signal of a corresponding region by a positioning request from the mobile communication terminal. A system for providing a GPS field test to a mobile communication terminal using three-dimensional geographic information comprising a. The method of claim 11, wherein the PDE is, When the mobile communication terminal uses the MS Assisted GPS method, the mobile communication terminal uses three-dimensional geographic information to calculate location information of the mobile communication terminal based on a simulated GPS signal received from the mobile communication terminal. A system that provides GPS field testing on. The method of claim 11, wherein the GPS signal generator, The satellite distribution of the area corresponding to the field test geographic information is calculated on the basis of the GPS satellite position information on the moving path and the GPS satellite moving speed set in the field test geographic information, and the field is based on the satellite distribution. Similar to the GPS signal received when generating a simulated GPS signal corresponding to a moving path according to the moving speed of the mobile communication terminal set in the test geographic information and moving at the moving speed in the moving path set in the field test geographic information. A system for providing a GPS field test to a mobile communication terminal using three-dimensional geographic information, characterized in that for transmitting a simulated GPS signal. The method of claim 11, wherein the base station signal generator, And generating and transmitting a simulated base station signal including a system identifier, a network identifier, a base station identifier, and reference pseudo noise of a base station existing in each of the movement paths according to the movement speed set in the field test geographic information. A system for providing a GPS field test to a mobile communication terminal using dimensional geographic information. A GPS field test server for providing a GPS field test to a mobile communication terminal using three-dimensional geographic information, Controlling all components of the GPS field test server to generate field test geographic information for setting a moving path and a moving speed of the mobile communication terminal in the three-dimensional geographic information for the GPS field test; A control unit for controlling to transmit geographic information to a GPS signal generator and a base station signal generator, and controlling to receive the location information from the mobile communication terminal and map it to a map in real time; A memory unit which temporarily stores data processed by the controller or stores a program for performing a function of the GPS field test server, and stores data necessary for operation of the GPS field test server; A panel or monitor using a light emitting diode (LED) can display related information so that an administrator who manages the GPS field test server can check the operation process of the GPS field test server or the processing status according to the presence of an error. A display unit for outputting to a monitor, displaying a map in which the location information received from the mobile communication terminal is mapped, and displaying positioning performance including positioning accuracy and positioning speed of the mobile communication terminal; A key input unit used by the manager to load the 3D geographic information of a test area for the GPS field test and to set the movement path and the movement speed of the mobile communication terminal; A network interface card for providing a communication interface for the GPS field test server to communicate with the GPS signal generator, the base station signal generator, and a Position Determination Entity (PDE); And A database server that stores, retrieves, deletes, edits, and adds three-dimensional geographic information including a latitude, longitude, and terrain of a test area for the GPS field test, and a base station from a three-dimensional geographic information database. GPS field test server for providing a GPS field test to the mobile communication terminal using the three-dimensional geographic information comprising a. The method of claim 15, wherein the control unit, When the mobile communication terminal uses the MS Assisted GPS method, the GPS field test is provided to the mobile communication terminal by using the 3D geographic information, wherein the location information is received from the PDE and controlled to be mapped onto a map in real time. GPS field test server.

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