KR20130068445A - Method of acquiring location information by a user quipment and method of providing location information to user quipment by a network node - Google Patents

Abstract

PURPOSE: A method for enabling a terminal to obtain location information and another method for enabling a network node to provide the location information to the terminal are provided to enable a user to obtain errors for the location information by notifying a location measurement method to the terminal. CONSTITUTION: A control unit(180) measures a reception signal state in a current location based on a signal received from one or more base stations. The control unit transmits the information of the measured reception signal to a first network node and a second network node. The control unit receives a message indicating a threshold value in a current location calculated by a first positioning method from a third network node. The control unit receives a message including an error value when the errors are under the threshold value in the calculated current location. [Reference numerals] (110) Wireless communication unit; (111) Broadcasting reception module; (112) Mobile communication module; (113) Wireless Internet module; (114) Local area communication module; (115) Location information module; (120) A/V input unit; (121) Camera; (122) Microphone; (130) User input unit; (140) Sensing unit; (141) Proximity sensor; (150) Output unit; (151) Display unit; (152) Sound output module; (153) Alarm unit; (154) Haptic module; (155) Projector module; (160) Memory; (170) Interface unit; (180) Control unit; (181) Multimedia module; (190) Power supplying unit

Description

Method of acquiring location information by a user quipment and method of providing location information to user quipment by a network node}

The present invention relates to location information, and more particularly, to a method for obtaining location information by a terminal, a method for providing location information to a terminal by a network node, and an apparatus therefor.

Assisted GPS (A-GPS) improves GPS start-up speed under certain conditions (usually when a data connection with the server is established) and time to first fix (TTTF), the time it takes to establish a data link with the first satellite. Satellite-based location acquisition system to reduce A-GPS is primarily used in GPS-embedded handsets (phones or smartphones) and was developed by the Federal Communications Commission to quickly deliver locations during 911 emergency calls.

The terminal may support the location information service to the user through a technology called A-GPS. A-GPS is a location information service technology commonly used in the 3GPP standard and currently provides a lot of services to subscribers. In other words, the terminal receives the GPS (A-GNSS) satellite information from the 3GPP, and based on this, the base station may receive or receive the location-related information from the base station and receive the correct location through the server that manages the location information of the base station.

So-called A-GPS is already being implemented, and this technology is a technology for finding a more precise location through communication with a server that takes the information received by the terminal with GPS and again manages the location information of the base station. Nowadays, it is widely used in 3GPP standard Wideband Code Division Multiple Access (WCDMA) or 3GPP2 standard Code Division Multiple Access (CDMA). If the base station reception is not easy to estimate the location using only the satellite information, which may have a larger error than A-GPS and takes longer. In addition, measurement time may vary depending on the region.

The United States has launched many satellites off Earth to monitor the Soviet Union since the Cold War of the former Soviet Union. These satellites periodically send information about their location to Earth at a specific frequency. When the terminal receives this and estimates the position, the error reaches several hundred meters. Therefore, in order to reduce the more accurate estimation and error, the terminal knows a more accurate position by accessing the information received from the GPS satellite back to the location information server of the base station, which is called A-GPS technology. In general, the accuracy may vary depending on the location within the base station, but the margin of error is reduced to within a few meters.

However, this technique has a problem in obtaining a position when GPS cannot be received. Of course, if the building receives a GPS signal through the antenna installed in the outside, but at present it is quite limited, the place where the GPS reception in reality will be a lot of problems indoors or underground. In this case, it will be practically difficult for the terminal to obtain accurate location information.

In the future, even in the case of a terminal without a low-cost GPS chip, there is a limitation in providing a location information service so that only the location of the nearest base station can be reported.

An object of the present invention is to provide a method for the terminal to obtain location information.

Another object of the present invention is to provide a method for a first network node to provide location information of a terminal.

Another object of the present invention is to provide a terminal device for obtaining location information.

Another object of the present invention is to provide a first network node device for providing location information of a terminal.

The technical problems to be solved by the present invention are not limited to the technical problems and other technical problems which are not mentioned can be understood by those skilled in the art from the following description.

In order to achieve the above technical problem, according to an embodiment of the present invention, a method of obtaining location information by a terminal includes: calculating a current location using a first positioning method; Measuring a state of a received signal at the current location based on a signal received from at least one base station; Transmitting the calculated information of the current location and the information of the received signal status at the measured current location to a second network node via a first network node; And a message indicating that an error is greater than or equal to a threshold at a current position calculated by the first positioning scheme from a third network node or an error value when the error is less than a threshold at the current position calculated by the first positioning scheme. Receiving a message that includes.

The method may further include receiving a signal for requesting current location information from the user.

Alternatively, the method may further include receiving a signal for requesting to calculate a current position from the user in the selected location method, wherein the first location method may be a location method selected from the user.

In addition, the method may further comprise displaying the received message.

The first network node may be a base station, the second network node may be a minimization of drive test (MDT) server, and the third network node may be a location server.

In another aspect of the present invention, a method for acquiring position information by a terminal includes: calculating a current position for each of the plurality of positioning methods using a plurality of positioning methods; Measuring a received signal state based on a signal received from at least one base station at the current location; Transmitting the calculated plurality of current location information and information on a state of a received signal at the measured current location to a second network node via a first network node; And receiving, from a third network node, at least one of error rank information of the current position calculated and reported for each of the plurality of positioning methods and error range information of the current position calculated and reported for each of the plurality of positioning methods. It may include.

The method may further include displaying at least one of the received error ranking information and the error range information.

In accordance with another aspect of the present invention, there is provided a method of providing a location information of a terminal by a first network node, in which the terminal receives a signal received from at least one base station at a current location. Receiving a measurement result from the second network node, the measurement result including information about an error between the received signal value measured on the basis of the received signal and the average value of the received signal stored in advance for the current position; Receiving current location information calculated by the terminal from the second network node or a third network node; And calculating an error of the current position calculated by the terminal based on at least one of the received current position information of the terminal and the measurement result. Here, the first network node is a location server, the second network node is a minimization of drive test (MDT) server, and the third network node is a base station.

The method may further include transmitting a message indicating that the calculated current position error is greater than or equal to a threshold value or a message including an error value when the calculated current position error is less than a threshold value.

As another embodiment according to the present invention for achieving the above technical problem, a method in which the first network node provides the location information of the terminal, the signal received by the terminal from at least one base station at the current location Receiving a measurement result from the second network node, the measurement result including information about an error between the received signal value measured on the basis of the received signal and an average value of the pre-stored received signal for the current position; Receiving, by the terminal, current location information calculated for each of a plurality of positioning methods from a third network node; And calculating at least one of an error rank and an error range with respect to a current position of each of the received plurality of positioning methods.

The method may further include transmitting at least one of an error rank and an error range for the current position for each of the plurality of positioning methods to the terminal.

In accordance with another aspect of the present invention, there is provided a terminal for acquiring position information, comprising: a position information module for calculating a current position using a first positioning method; And measuring a reception signal state based on a signal received from at least one base station at the current location, and using the calculated information on the current location and the information on the received signal status at the measured current location, the first network node. A message indicating that an error is greater than or equal to a threshold at a current position calculated by the first positioning scheme or an error less than a threshold at a current position calculated by the first positioning scheme. The mobile communication module may be configured to receive a message including an error value from a third network node.

As another embodiment according to the present invention for achieving the above technical problem, the terminal for obtaining the position information, the position information for calculating the current position for each of the plurality of positioning methods by using a plurality of positioning methods module; The received signal state is measured based on a signal received from at least one base station at the current position, and the calculated current position information for each of the plurality of positioning methods and information on the received signal state at the measured current position are first. At least one of error rank information for the current position calculated and reported for each of the plurality of positioning methods and error range information of the current position calculated and reported for each of the plurality of positioning methods. It may include a mobile communication module for receiving one from the third network node.

In accordance with another aspect of the present invention, there is provided a first network node for providing location information based on a signal received by the terminal from at least one base station at a current location. Receiving a measurement result including a received signal value and information on an error between a pre-stored average value of the received signal with respect to the current position from a second network node, and receiving the current position information calculated by the terminal from the second network node or A receiver receiving from a third network node; And a processor configured to calculate an error of the current position calculated by the terminal based on at least one of the received current position information of the terminal and the measurement result.

The first network node may further include a transmitter for transmitting a message indicating that the error of the current position calculated by the processor is greater than or equal to a threshold value, or a message including an error value when the error of the calculated current position is less than a threshold value. It may include.

In another embodiment according to the present invention for achieving the above technical problem, a first network node for providing location information is based on a signal received by the terminal from at least one base station at a current location. Receives a measurement result including information on the error between the measured received signal value and the pre-stored received signal average value for the current location from the second network node, and the current location information calculated by the terminal for each of a plurality of positioning methods A receiver receiving from a third network node; And a processor configured to calculate at least one of an error rank and an error range with respect to a current position of each of the received plurality of positioning methods.

According to various embodiments of the present disclosure, the terminal informs the user of the location measurement method in the place where GPS is not received, and thus the user can estimate the error of the current location information. In addition, the user can report how much potential error he / she currently has, and in the case of a low-cost terminal without a GPS receiver chip, even if there is an error through OTDOA or E-CID, the user can know the position and more through the MDT method. It is possible to use a quality location service by passing the user's reliable location available section to the user. Even if the terminal does not have a GPS receiver chip, the terminal having another GPS receiver chip may increase the accuracy by using the reception level values already reported to the MDT server.

The effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the following description will be.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
1 is a block diagram for briefly showing a configuration of a terminal device according to the present invention.
2 is a block diagram showing components of a network node device according to the present invention.
3 is a diagram illustrating a basic model constituting the LPP.
4A to 4C are diagrams illustrating a location information measuring method in 3GPP LTE Release 9 or LTE Release 10 (LTE-A).
5 is a diagram illustrating an example of a process of sharing location information between a terminal and a network node according to an embodiment of the present invention.
6 is a view for explaining the actual measurement through the MDT.
7 is a diagram illustrating a result of MDT measurement.
8 is an exemplary diagram showing a stored MDT measurement result on a map.
9 is a diagram illustrating position information displayed on a display unit of a terminal according to the present invention.
10A to 10C are exemplary views displayed on the display unit 151 of the error value transmitted from the location server and the positioning method information measured by the terminal in step S580.
11 is a diagram illustrating an example of a process of sharing location information between a terminal and a network node according to another embodiment of the present invention.
FIG. 12 is a diagram illustrating a form in which information about an error rank of current location information is displayed according to the embodiment of FIG. 11.
FIG. 13 is an exemplary diagram displayed on the display unit 151 when the location server calculates and transmits an error range for each positioning method.
14A to 14C illustrate examples of displaying location information services according to a specific positioning method on the display unit 151 of the terminal.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following detailed description, together with the accompanying drawings, is intended to illustrate exemplary embodiments of the invention and is not intended to represent the only embodiments in which the invention may be practiced. The following detailed description includes specific details in order to provide a thorough understanding of the present invention. However, those skilled in the art will appreciate that the present invention may be practiced without these specific details. For example, the following detailed description will be described assuming that the mobile communication system is an Institute of Electrical and Electronics Engineers (IEEE) 802.16 system, a 3rd Generation Partnership Project (3GPP), but is unique to the IEEE 802.16 system and 3GPP. It is applicable to any other mobile communication system except for this.

In some instances, well-known structures and devices may be omitted or may be shown in block diagram form, centering on the core functionality of each structure and device, to avoid obscuring the concepts of the present invention. In the following description, the same components are denoted by the same reference numerals throughout the specification.

In the following description, it is assumed that the UE collectively refers to a mobile stationary or stationary user equipment such as a UE (User Equipment), an MS (Mobile Station), and an AMS (Advanced Mobile Station). It is also assumed that the base station collectively refers to any node at a network end that communicates with a terminal such as a Node B, an eNode B, a BS (Base Station), and an AP (Access Point).

In a mobile communication system, a terminal may receive information from a base station through downlink, and the terminal may also transmit information through uplink. The information transmitted or received by the terminal includes data and various control information, and various physical channels exist depending on the type of information transmitted or received by the terminal.

1 is a block diagram for briefly showing a configuration of a terminal device according to the present invention.

The terminal described herein is not limited to the mobile phone as the telephone illustrated in the drawings, but is a smart phone, a notebook computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP). As it can be widely applied to navigation, etc., it should be understood as a concept including a portable electronic product.

The illustrated terminal 100 includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a storage unit 160, The interface unit 170 may include a controller 180, a power supply unit 190, and the like. It should be noted that when the components are implemented in a practical application, two or more components may be merged into one component, or one component may be subdivided into two or more components as necessary.

Hereinafter, the components will be described in order.

The terminal 100 includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, and an interface unit ( 170, the controller 180, the power supply unit 190, and the like. The components shown in Fig. 1 are not essential, and a terminal having more or fewer components may be implemented.

Hereinafter, the components will be described in order.

The wireless communication unit 110 may include one or more modules that enable wireless communication between the terminal 100 and the wireless communication system or between the terminal 100 and a network in which the terminal 100 is located. For example, the wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short range communication module 114, and a location information module 115 .

The broadcast receiving module 111 receives a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel.

The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may mean a server that generates and transmits a broadcast signal and / or broadcast related information or a server that receives a previously generated broadcast signal and / or broadcast related information and transmits the same to a terminal. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and a broadcast signal in which a data broadcast signal is combined with a TV broadcast signal or a radio broadcast signal.

The broadcast-related information may refer to a broadcast channel, a broadcast program, or information related to a broadcast service provider. The broadcast related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 112.

The broadcast related information may exist in various forms. For example, it may exist in the form of Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB) or Electronic Service Guide (ESG) of Digital Video Broadcast-Handheld (DVB-H).

For example, the broadcast receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S), a Media Forward Link Only A digital broadcasting system such as DVB-CB, OMA-BCAST, or Integrated Services Digital Broadcast-Terrestrial (ISDB-T). Of course, the broadcast receiving module 111 may be adapted to other broadcasting systems as well as the digital broadcasting system described above.

The broadcast signal and / or broadcast related information received through the broadcast receiving module 111 may be stored in the memory 160.

The mobile communication module 112 transmits and receives radio signals to at least one of a base station, an external terminal, and a server on a mobile communication network. The wireless signal may include various types of data depending on a voice call signal, a video call signal or a text / multimedia message transmission / reception.

The wireless internet module 113 refers to a module for wireless internet access and may be built in or external to the terminal 100. Wireless Internet technologies may include Wireless LAN (Wi-Fi), Wireless Broadband (Wibro), World Interoperability for Microwave Access (Wimax), High Speed Downlink Packet Access (HSDPA), and the like.

The short range communication module 114 refers to a module for short range communication. Bluetooth, Radio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), ZigBee, and the like can be used as a short range communication technology.

The location information module 115 is a module for obtaining a location of a terminal, and a representative example thereof is a GPS (Global Position System) module. According to the current technology, the GPS module 115 calculates distance information and accurate time information away from three or more satellites, and then applies trigonometric methods to the calculated information, thereby providing three-dimensional chords according to latitude, longitude, and altitude. The location information can be calculated accurately. At present, a method of calculating position and time information using three satellites and correcting an error of the calculated position and time information using another satellite is widely used. In addition, the GPS module 115 can calculate speed information by continuously calculating the current position in real time.

Referring to FIG. 1, an A / V (Audio / Video) input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 122. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video call mode or the photographing mode. The processed image frame can be displayed on the display unit 151. [

The image frame processed by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. [ Two or more cameras 121 may be provided depending on the use environment.

The microphone 122 receives an external sound signal through a microphone in a communication mode, a recording mode, a voice recognition mode, or the like, and processes it as electrical voice data. The processed voice data can be converted into a form that can be transmitted to the mobile communication base station through the mobile communication module 112 when the voice data is in the call mode, and output. Various noise reduction algorithms may be implemented in the microphone 122 to remove noise generated in receiving an external sound signal.

The user input unit 130 generates input data for a user to control operation of the terminal.

The user input unit 130 may receive from the user a signal designating two or more contents among the displayed contents according to the present invention. A signal for designating two or more contents may be received via the touch input, or may be received via the hard key and soft key input.

The user input unit 130 may receive an input from the user for selecting the one or more contents. In addition, the user may receive an input for generating an icon related to a function that the terminal 100 can perform.

The user input unit 130 may include a directional keypad, a keypad, a dome switch, a touchpad (static / static), a jog wheel, a jog switch, and the like.

The sensing unit 140 detects a current state of the terminal 100 such as an open / closed state of the terminal 100, a position of the terminal 100, presence or absence of a user contact, orientation of the terminal, acceleration / deceleration of the terminal, and the like. Generates a sensing signal for controlling the operation of. For example, when the terminal 100 is in the form of an slide phone, whether the slide phone is opened or closed may be sensed. In addition, whether the power supply unit 190 is supplied with power, whether the interface unit 170 is coupled to the external device may be sensed. Meanwhile, the sensing unit 140 may include a proximity sensor 141. The proximity sensor 141 will be described later in relation to the touch screen.

The output unit 150 is for generating an output relating to visual, auditory or tactile sense and includes a display unit 151, an acoustic output module 152, an alarm unit 153, a haptic module 154, 155, and the like.

The display unit 151 displays (outputs) information processed by the terminal 100. For example, when the terminal is in the call mode, a UI (User Interface) or GUI (Graphic User Interface) associated with the call is displayed. When the terminal 100 is in a video call mode or a photographing mode, the terminal 100 displays a photographed and / or received image, a UI, or a GUI.

As described above, the display unit 151 may include a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), The display device may include at least one of a flexible display and a 3D display.

Some of these displays may be transparent or light transmissive so that they can be seen through. This can be referred to as a transparent display, and a typical example of the transparent display is TOLED (Transparent OLED) and the like. The rear structure of the display unit 151 may also be of a light transmission type. With this structure, the user can see an object located behind the terminal body through the area occupied by the display unit 151 of the terminal body.

There may be two or more display units 151 according to the implementation form of the terminal 100. For example, a plurality of display units may be spaced apart or integrally disposed on one surface of the terminal 100, or may be disposed on different surfaces.

When the display unit 151 and a sensor for detecting a touch operation (hereinafter, referred to as a touch sensor) form a mutual layer structure (hereinafter referred to as a touch screen), the display unit 151 may be configured in addition to an output device. Can also be used as an input device. The touch sensor may have the form of, for example, a touch film, a touch sheet, a touch pad, or the like.

The touch sensor may be configured to convert a change in a pressure applied to a specific portion of the display unit 151 or a capacitance generated in a specific portion of the display unit 151 into an electrical input signal. The touch sensor can be configured to detect not only the position and area to be touched but also the pressure at the time of touch.

If there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller (not shown). The touch controller processes the signal (s) and transmits the corresponding data to the controller 180. As a result, the controller 180 can know which area of the display unit 151 is touched.

The proximity sensor 141 may be disposed in an inner region of the terminal surrounded by the touch screen or near the touch screen. The proximity sensor refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or a nearby object without mechanical contact using the force of an electromagnetic field or infrared rays. The proximity sensor has a longer life span than the contact sensor and its utilization is also high.

Examples of the proximity sensor include a transmission photoelectric sensor, a direct reflection photoelectric sensor, a mirror reflection photoelectric sensor, a high frequency oscillation proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. And to detect the proximity of the pointer by the change of the electric field along the proximity of the pointer when the touch screen is electrostatic. In this case, the touch screen (touch sensor) may be classified as a proximity sensor.

Hereinafter, for convenience of explanation, the act of allowing the pointer to be recognized without being in contact with the touch screen so that the pointer is located on the touch screen is referred to as a "proximity touch", and the touch The act of actually touching the pointer on the screen is called "contact touch." The position where the pointer is proximately touched on the touch screen means a position where the pointer is vertically corresponding to the touch screen when the pointer is touched.

The proximity sensor detects a proximity touch and a proximity touch pattern (e.g., a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, a proximity touch movement state, and the like). Information corresponding to the detected proximity touch operation and the proximity touch pattern may be output on the touch screen.

The sound output module 152 may output audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. The sound output module 152 may also output a sound signal related to a function (eg, a call signal reception sound, a message reception sound, etc.) performed by the terminal 100. The audio output module 152 may include a receiver, a speaker, a buzzer, and the like.

The alarm unit 153 outputs a signal for notifying occurrence of an event of the terminal 100. Examples of events generated in the terminal include call signal reception, message reception, key signal input, and touch input. The alarm unit 153 may output a signal for notifying the occurrence of an event in a form other than the video signal or the audio signal, for example, vibration. In this case, the display unit 151 and the audio output module 152 may be a type of the alarm unit 153. The display unit 151 and the audio output module 152 may be connected to the display unit 151 or the audio output module 152, .

The haptic module 154 generates various tactile effects that the user can feel. A typical example of the haptic effect generated by the haptic module 154 is vibration. The intensity and pattern of vibration generated by the haptic module 154 can be controlled. For example, different vibrations may be synthesized and output or sequentially output.

In addition to vibration, the haptic module 154 may be configured to provide a pin array that vertically moves with respect to the contact skin surface, a jetting force or suction force of air through an injection or inlet port, grazing to the skin surface, contact of an electrode, electrostatic force, and the like. Various tactile effects can be generated, such as effects by the endothermic and the reproduction of a sense of cold using the elements capable of endotherm or heat generation.

The haptic module 154 can be implemented not only to transmit the tactile effect through the direct contact but also to allow the user to feel the tactile effect through the muscular sensation of the finger or arm. Two or more haptic modules 154 may be provided according to a configuration aspect of the terminal 100.

The projector module 155 is a component for performing an image project function using the terminal 100 and is the same as an image displayed on the display unit 151 according to a control signal of the controller 180. At least some of the other images may be displayed on an external screen or wall.

Specifically, the projector module 155 includes a light source (not shown) that generates light (for example, laser light) for outputting an image to the outside, a light source And a lens (not shown) for enlarging and outputting the image at a predetermined focal distance to the outside. Further, the projector module 155 may include a device (not shown) capable of mechanically moving the lens or the entire module to adjust the image projection direction.

The projector module 155 can be divided into a CRT (Cathode Ray Tube) module, an LCD (Liquid Crystal Display) module and a DLP (Digital Light Processing) module according to the type of the display means. In particular, the DLP module may be advantageous for miniaturization of the projector module 151 by enlarging and projecting an image generated by reflecting light generated from a light source on a DMD (Digital Micromirror Device) chip.

Preferably, the projector module 155 may be provided in the longitudinal direction on the side, front or back of the terminal 100. Of course, the projector module 155 may be provided at any position of the terminal 100 as necessary.

The memory 160 may store a program for processing and controlling the controller 180 and may store the input / output data (e.g., a telephone directory, a message, an audio, a still image, an electronic book, History, and the like). The memory 160 may also store the frequency of use of each of the data (for example, each telephone number, each message, and frequency of use for each multimedia). In addition, the memory 160 may store data on vibration and sound of various patterns outputted when a touch is input on the touch screen.

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory, etc.) ), A random access memory (RAM), a static random access memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read- A magnetic disk, an optical disk, a memory, a magnetic disk, or an optical disk. The terminal 100 may operate in connection with a web storage that performs a storage function of the memory 160 on the Internet.

The interface unit 170 serves as a path for communication with all external devices connected to the terminal 100. The interface unit 170 receives data from an external device, receives power, transfers the power to each component inside the terminal 100, or transmits data inside the terminal 100 to an external device. For example, a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device having an identification module, an audio I / O port, A video input / output (I / O) port, an earphone port, and the like may be included in the interface unit 170.

The identification module is a chip that stores various information for authenticating the use authority of the terminal 100, and includes a user identification module (UIM), a subscriber identification module (SIM), and a universal user authentication module (Universal). Subscriber Identity Module, USIM) and the like. Devices with identification modules (hereinafter referred to as "identification devices") can be manufactured in a smart card format. Therefore, the identification device may be connected to the terminal 100 through a port.

When the terminal 100 is connected to an external cradle, the interface unit is a passage through which power from the cradle is supplied to the terminal 100 or various command signals input from the cradle by a user are transmitted to the terminal. It can be a passage. Various command signals or power input from the cradle may be operated as signals for recognizing that the terminal is correctly mounted on the cradle.

The controller 180 typically controls the overall operation of the terminal. For example, voice communication, data communication, video communication, and the like. The control unit 180 may include a multimedia module 181 for multimedia playback. The multimedia module 181 may be implemented in the control unit 180 or may be implemented separately from the control unit 180. [

The controller 180 may perform a pattern recognition process for recognizing handwriting input or drawing input performed on the touch screen as characters and images, respectively.

The power supply unit 190 receives an external power source and an internal power source under the control of the controller 180 to supply power for operation of each component.

2 is a block diagram showing components of a network node device according to the present invention.

Referring to FIG. 2, the network node 200 refers to a node in various wireless networks or wireless communication systems such as a base station and a location server except for a terminal. The network node may include an RF unit 210, a processor 220, and a memory 230. In addition, each RF unit 210 may include a transmitter 211 and a receiver 212. For example of the network node 200, the transmitter 211 and the receiver 212 are configured to transmit and receive signals with other network nodes and terminals, and the processor 220 is the transmitter 211 and the receiver 212. Functionally connected with, the transmitter 211 and the receiver 212 may be configured to control a process of transmitting and receiving signals with other devices. In addition, the processor 220 may perform various processing on the signal to be transmitted and then transmit the signal to the transmitter 211, and may perform the processing on the signal received by the receiver 212. If desired, the processor 220 may store the information contained in the exchanged message in the memory 230.

The processor 220 instructs (eg, controls, coordinates, manages, etc.) operation at the network node 200. The processor 220 may be connected to a memory 230 that stores program codes and data. Memory 230 is coupled to processor 220 to store operating systems, applications, and general files.

The processor 220 may also be referred to as a controller, a microcontroller, a microprocessor, a microcomputer, or the like. On the other hand, the processor 220 may be implemented by hardware (hardware) or firmware (firmware), software, or a combination thereof. When implementing embodiments of the present invention using hardware, application specific integrated circuits (ASICs) or digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs) configured to perform the present invention. Field programmable gate arrays (FPGAs) may be provided in the processor 220.

Meanwhile, when implementing embodiments of the present invention using firmware or software, the firmware or software may be configured to include a module, a procedure, or a function for performing the functions or operations of the present invention, and to perform the present invention. Firmware or software configured to be may be provided in the processor 220 or stored in the memory 230 and may be driven by the processor 220.

According to an embodiment of the present invention, in a positioning service in an LTE system, a user may determine which location position service to use through functions for tracking a location added in LTE in addition to general GPS. As a result, it is possible to use the determined position position service. In addition, the user can automatically perform an optimal position measurement method according to the situation, and recognize the most accurate position measurement method through the generation of the error. Many new technologies are being introduced today, in addition to the GPS we know when it comes to LTE. These have many advantages, such as providing precise location information in places where previous GPS is not easy.

In addition, the present invention enables users to perform their required services in an area where GPS reception is impossible based on the location information system in the LTE (Long Term Evolution) and LTE (Long Term Evolution-Advanced) systems. In addition, the location information service can include a Minimization of Drive Test (MDT) function to display the error range of the actual area of the user, thereby providing a higher quality service than the simple location information map display.

In LTE Release 9 or LTE-A (Release 10), the Location Position Protocol (LPP) is introduced. LPP provides the following three positioning methods. This LPP technology is divided into three functions: Assisted Global Navigation Satellite System (A-GNSS), Observed Time Differential Of Arrival (OTDOA), and Enhanced Cell ID (E-CID) to be.

In the 3GPP (3rd Generation Partnership Project) LTE, the LBS positioning method is standardized by the LPP, and the positioning method based on the satellite and Evolved Universal Terrestrial Radio Access Network (E-UTRAN) is provided.

3 is a diagram illustrating a basic model constituting the LPP.

Referring to FIG. 3, in the LPP model, the location server may transmit assistance data for positioning to the terminal. That is, the location server can transmit assistance data to the terminal so that the OTDOA / A-GNSS scheme can be used. Although not shown in FIG. 3, when the location server requests location information from the terminal before transmitting assistance data for positioning to the terminal, the terminal further transmits a request for assistance data back to the location server. May be included.

In the LPP model, the UE uses a reference signal (which may be variously referred to as a pilot signal or a preamble) of a base station (eNode B) and a satellite for positioning, and measures information from the reference signal ( Measurement or location information is transmitted to the server (E-SMLC / SLP), and final location determination is made at the location server. As shown in FIG. 3, the location information and the transmission / reception scheme between the terminal and the location server are standardized, and the LPP standard may include an IE and signaling procedure for the location information. The characteristic feature of this LPP specification is that it simultaneously supports transmission of positioning information in the control plane and user plane. As the positioning information transmission in the user plane is possible, a new positioning method can be added flexibly.

Previously, I mentioned that there are three types of LPP technology: A-GNSS (or A-GPS), OTDOA, and E-CID. Hereinafter, the LPP technique will be described with reference to FIG. 3.

4A to 4C are diagrams illustrating a location information measuring method in 3GPP LTE Release 9 or LTE Release 10 (LTE-A).

Referring to FIG. 4A, the A-GNSS method is a satellite-based positioning method and has an advantage of reducing initial positioning time by receiving basic satellite information for positioning through a wireless network. In the case of A-GNSS, it is not much different from the conventional A-GPS system, and only the wireless network uses only the LTE network. In reality, the communication between the GPS and the location server of the network It can be said that they are similar to each other in the way of obtaining accurate position information. In the following description, the A-GNSS scheme can be used in combination with the A-GPS scheme. In the A-GNSS system, the UE acquires position information from an artificial satellite using, for example, an LTE network, and obtains more accurate position information by exchanging position information with the position server.

On the other hand, the OTDOA method and the E-CID method are network-based positioning methods and follow the basic contents of a general TDOA (Time Differential Of Arrival) and a CID (Cell ID) method, respectively.

Referring to FIG. 4B, in the OTDOA method, a measurement value called a reference signal time difference (RSTD) is used to obtain a propagation time difference between a reference base station and an adjacent base station. That is, a signal of a specific frame is received from a neighboring base station, and a tap closest to a tap received from a neighboring base station among the delay taps received by the reference base station for the frame is selected and the time difference is calculated as an RSTD value. Therefore, the performance can be influenced by the effective tap estimation method.

As described above, the OTDOA method is a method in which a terminal calculates a distance and a position based on arrival time differences of a plurality of base station (or cell) signals. Since this method is implemented in a UMTS network, a hearability problem may occur. The degree of audibility indicates the degree to which a plurality of base station signals can be received within a predetermined time, in order to receive a plurality of base station signals for triangulation.

The audibility problem is that if the terminal can not use enough reference signals, it can measure other base station signals in the same frequency band if the terminal is close to the serving base station. In order to solve this audibility problem, 3GPP LTE adopts E-IPDL (Evolved-Idle Period Downlink) method. When a reference signal is received from a plurality of base stations for positioning, it becomes difficult to receive a base station signal at a position relatively far from the base station, and the number of base stations for triangulation becomes insufficient.

In addition, delay tap decomposition performance is reduced due to interference between adjacent base stations. The introduction of the E-IPDL method to solve this situation provides improved positioning performance. The OTDOA method is generally required for obtaining the accurate position information of the UE by the arrival time difference of signals from three or more BSs.

Referring to FIG. 4C, the E-CID scheme is a method of narrowing the location of a terminal by combining a received signal strength indication (RSSI) scheme with a hybrid scheme in a conventional CID scheme. (RSRP) and Reference Signal Received Power (RSRQ) as related measurement values. The E-CID method is a newly introduced technology that has been introduced in LTE. It uses Round Trip Measurement, Pathloss Related Measurement, and Angel Measurement of Arrival Measurement).

A brief look at RSRP. In the 3GPP LTE system, the UE can measure the channel quality state between itself and the cell using the RSRP corresponding to the power of the reference signal. Here, the reference signal reception power refers to a linear average of the power allocated to the resource elements to which the cell-specific reference signal is allocated within the considered measurement frequency bandwidth. The power of each resource element on the resource block can be determined from the energy received from a valid period of the symbol except for the cyclic prefix (CP). The reference signal reception power may be applied to the UE in both the RRC_idle state and the RRC_connected state. In addition, when receiver diversity is used by the terminal, the reported value will be equal to the linear average of the power values of all diversity branches.

The terminal can measure the reference signal reception power of the base station by accumulating the reference signal transmitted by each base station for a predetermined time and a corresponding bandwidth. In an environment where a cell to which the UE belongs and a neighbor cell exist, the UE can measure the RSRP for the serving BS neighboring to the serving BS and neighboring neighboring BSs according to the information provided from the BS.

The above-mentioned A-GNSS method is the same as the existing A-GPS method. There are OTDOA method and E-CID method as a method of estimating the position of the terminal without the help of GPS and communication of the base station. There is more than one base station (or cell) to have high accuracy of location. The E-CID scheme is a newly introduced technology in LTE and there is no limit to the number of base stations (or cells) of OTDOA.

5 is a diagram illustrating an example of a process of sharing location information between a terminal and a network node according to an embodiment of the present invention.

Referring to FIG. 5, the terminal may receive a request for location information from the user (S510). Then, the terminal calculates the current position using any one of the positioning methods illustrated in FIGS. 4A to 4C (S520). The method of measuring the current position by the terminal using the A-GNSS method, the OTDOA method, and the E-CID method has been described above. In this case, the terminal is to use the positioning method to measure the current position by using a positioning method selected from the user if the priority is the highest priority method if the priority is determined in advance, or if the user has a desired positioning method. Can be.

In the embodiment related to FIG. 5, for example, the A-GNSS method, which is a satellite-based positioning method, has the highest priority, is set to a first ranking method in advance, or is received by a user's request in step S510. Suppose it is the way.

When the terminal receives a request for location information from the user, first the current position is calculated using the A-GNSS method. If the location of the terminal is not known by A-GPS because GPS is not received where GPS reception is not possible, in this case, the current location may be calculated using, for example, the OTDOA method corresponding to the next rank. In addition, if the UE has three or less corresponding reception cells (or base stations), the UE may measure the current position through the E-CID scheme, which is the next priority.

In contrast, since the terminal includes a display unit 151 for allowing the user to select various location information measuring methods, when the user selects the positioning method, the terminal receives the positioning method selected by the user. In addition, the current position can be measured by the input method. If the user selects the A-GNSS method, the terminal measures the current position using the A-GNSS method.

In addition, the terminal may receive the reference signal from the base station and measure the state of the received signal at the current location (for example, in RSRP and RSPQ types) (S520).

Thereafter, the terminal transmits the measured current received signal state (RSRP, RSTD, etc.) and the calculated current location information to the base station, and the base station can transmit it to the MDT server (S530). Here, MDT (Minimization of Drive Test) is a technology introduced in the 3GPP LTE-A system. The MDT will be briefly described below.

6 is a view for explaining the actual measurement through the MDT.

MDT technology allows the terminals present in the cell to perform measurements and report the results to the network node (e.g., MDT server) so that the network node (e.g., MDT server) generates a cell coverage map, The resulting time and cost for network optimization can be minimized. There are two types of MDTs: Logged MDT and Immediate MDT.

Logged MDT is a method in which the UE performs measurement at the current location and then stores the data and sends it to a network node (for example, an MDT server) at a specific point in time. Immediate MDT is a method in which the UE measures at the current location. After doing this, the data is directly transmitted to the network node (for example, MDT server). The difference between these two methods is whether the UE reports the measured result to the network node (for example, MDT server) or stores it and reports it later. In particular, the RRC_IDLE UE does not have an RRC connection. Since the measurement results cannot be reported immediately, Logged MDT is used.

In order to perform the logged MDT, the UE may receive a message including a logging configuration of a measurement for the MDT from the cell. The Logged MDT setting received by the UE may include a triggering setting for triggering logging of an event, a duration in which the MDT setting is valid, an area setting for performing MDT, and the like.

Upon receiving the logging configuration for the logged MDT measurement, the terminal starts a timer for a period in which the MDT setting is valid. Only while the duration timer is in operation, the UE stores the measured value of the logged MDT in the RRC_IDLE state. When the validity period timer expires, the terminal may delete the MDT configuration.

The value measured for the MDT is generally a measure of the quality of the received signal in the cell where the UE is camped on, which can be measured by RSRP, RSRQ, or the like. When the Logged MDT is set in the terminal, the terminal may measure and store the reception signal quality of the current location in the RRC_IDLE mode, and then report the result as an MDT measurement result to a network node (for example, an MDT server).

A section having a problem with a reception level through MDT positioning is called a coverage hole, which is determined by the terminal. In addition, the terminal measures the location information of the corresponding area, for example, can measure the location information through the A-GNSS (A-GPS) method. If a coverage hole occurs, the base station reception is good, so the same method as OTDOA or E-CID cannot be used. The terminal informs the network operator of a communication service problem in the region by sending a location and a measurement value (that is, a reception signal state) of the region to a base station or a network node (MDT server). The network operator can re-run cell planning for the region later to increase the call quality of the communication and provide high quality service.

The MDT server synthesizes the MDT measurement results received from the various terminals to create a coverage map showing the distribution of service availability and quality of service over the entire area in which the service provider provides the service, and network operation. And optimization. For example, if a coverage problem of a specific area is reported from the terminal, the MDT server may increase the transmission power of the base station providing the service of the corresponding area to expand the coverage of the corresponding area cell. The MDT measurement result may be used interchangeably as a log, terminal log value, measurement value, and cell quality measurement result.

7 is a diagram illustrating a result of MDT measurement.

The MDT server may receive the MDT measurement result (for example, the reception signal state at the current location) and the current location information from each terminal from each terminal (S530). In addition, the MDT server may store MDT measurement values (for example, RSRQ type) reported periodically or aperiodically from various terminals for a predetermined time to calculate and store MDT average value information or high frequency MDT measurement values ( S540). In addition, the MDT server may determine whether an error exists by comparing the MDT average value at the stored current location with the reception signal state at the current location from the terminal (S540).

When the MDT server overlaps with a service such as, for example, an Earth Map provided by Google based on the (stored) MDT measurement result, etc., the MDT server is received at each grid interval on the map as shown in FIG. 8. You can see the signal status. As a result, the grid spacing can be managed as shown in FIG. 8.

8 is an exemplary diagram showing a stored MDT measurement result on a map.

A base station and / or a network node (for example, an MDT server or a location server) receives location information and reception signal status information uploaded by different terminals in a corresponding area, so as to know in advance how much reception status the corresponding location has. Can be. Strictly speaking, the received signal states transmitted from the corresponding regions may be different for each terminal. In this case, the MDT server may store a number of frequencies or an average value among these values.

Thereafter, the MDT server may transmit the MDT measurement result and / or the current location information of the received terminal to the location server (S550). Here, the MDT measurement result is, for example, between the average value of the received signal state at the current position stored, the received signal state at the current position reported by the terminal, the state of the received signal at the current position reported by the terminal and the pre-stored average value. Information on whether an error exists, and the like.

Alternatively, the serving base station may transmit the current location information of the specific terminal to the location server (S560). That is, the location server may receive the current location information of the specific terminal from the serving base station of the specific terminal requesting the location information, or may receive the current location information of the specific terminal from the MDT server (S560).

Then, the location server may determine whether there is an error of a predetermined value or more in the current location reported by the terminal based on the MDT measurement result at the current location of the terminal received from the MDT server (S570). ). The location server may calculate an accurate current location of the terminal by using the calculated error range and the current location information of the terminal (S570).

If the calculated error range is greater than or equal to a predetermined threshold value, the location server may transmit a message that warns that there are many errors in the current location information of the terminal reported to the terminal (S580). If a specific terminal makes a request for location information and information of the region is in the grid, the current location of the reported terminal is different from or different from the MDT measurement result or the level already known. The information is likely to be wrong. Therefore, in this case, the location server may inform that there are many errors in the current location information reported to the specific terminal. In this case, when the error of the threshold value is more than a predetermined number of times, the location server may inform that there are many errors in the current location information reported to the specific terminal.

9 is a view showing position information displayed on the display unit 151 of the terminal according to the present invention by way of example.

In step S580, when the terminal receives a message warning that there are many errors in its current location information reported from the location server, the control unit 108, the warning message, the positioning method used by the terminal, information about the current location of the terminal The display unit 151 may control the display on the UI as shown in FIG. 9.

As such, when the terminal receives a message warning that there is an error in the location information from the location server, if the measurement was made by the A-GNSS method, MDT measurement results previously stored in the corresponding MDT server and the received signal measured by the terminal If there is a large error between states, the UE gives up the A-GNSS measurement method and then measures the current position by another measurement method (for example, the OTDOA method or the E-CID method) corresponding to the next priority, and the measurement. The procedure S520 to S580 may be repeated by transmitting the current location information and the received signal state to the MDT server again.

In addition, the location server, if the received signal state at the current location of the terminal received from the terminal is an error within a predetermined range from the MDT measurement result pre-stored in the MDT server, the location server is accurate to the current location information reported by the terminal Therefore, the location information can be sent to the terminal.

10A to 10C are exemplary views displayed on the display unit 151 of the error value transmitted from the location server and the positioning method information measured by the terminal in step S580.

When the location calculation error value of the terminal calculated by the location server is less than 10m, the controller 180 is information that the location calculation error value of the terminal is less than 10m, the positioning method information measured by the terminal (A-GPS or A-GNSS method) ), The display unit 151 may control the display unit 151 to display the current location and the received signal level of the terminal on the map as shown in FIG. 10A. If the positioning method measured by the terminal is the OTDOA method or the E-CID method, the controller 180 may provide information that a position calculation error value of the terminal is within 25 m or 30 m, and the positioning method information measured by the terminal (OTDOA or E-CID). Method), the current location of the terminal on the map and the received signal level may be controlled to be displayed on the display unit 151 as shown in FIG. 10B or 10C, respectively.

Meanwhile, if the error value calculated by the location server is greater than or equal to a predetermined value, the terminal sequentially performs a priority, a predetermined order, or a positioning method requested by the user until receiving the current location information from the location server. Can be repeated. Generally, A-GPS measurement method is known to have higher position measurement accuracy than OTDOA method. However, depending on the region, GPS reception may not be possible or bad, and the GPS reception chip is broken inside the terminal or there is a problem with the GPS reception antenna. If there is, the terminal may use a method such as OTDOA measurement method or E-CID in the next order.

11 is a diagram illustrating an example of a process of sharing location information between a terminal and a network node according to another embodiment of the present invention.

Referring to FIG. 11, the terminal may receive a request for positioning information from a user (S1110). In this embodiment, the UE can calculate the current position using all of the positioning methods illustrated in FIGS. 4A to 4C above, and the state of the current received signal (in RSRP, RSPQ, etc.) based on the reference signal from the base station. Can be measured (S1120). Thereafter, the terminal transmits the received signal state (RSRP, RSTD, etc.) and the current location information at the current location according to each positioning method to the base station, and the base station can transfer it to the MDT server (S1130).

The MDT server may report the MDT measurement result (for example, the reception signal state at the current location of the RSRQ type) and the current location information according to each positioning method from each terminal. The MDT server stores MDT measurement results (for example, a reception signal state at the current location of the RSRQ type) that are periodically or aperiodically reported from various terminals for a predetermined time to store average value information or high quality values. It may also calculate (S1140).

In addition, the MDT server determines the result of MDT measurement (for example, the average value of the received signal state at the stored current position, the received signal state at the current position reported by the terminal, and the state and the state of the received signal at the current position reported by the terminal. Information about whether there is an error between the stored average values, etc.) may be transmitted to the location server (S1150). In addition, the serving base station may transmit the current location information of the specific terminal received from the specific terminal to the location server (S1160). That is, the location server may receive the current location information of the specific terminal from the serving base station of the specific terminal requesting the location information (S1160).

Then, the location server may determine whether there is an error between the state of the received signal at the current location of the terminal according to each positioning method received from the MDT server and the previously stored MDT measurement result, and may calculate the range of the error ( S1170). At this time, the location server may create an error ranking for the positioning method according to the range of the error calculated for each positioning method (S1170), and transmit the error ranking information to the terminal (S1180).

In FIG. 11, the MDT stored average value is -100dBm, but it is measured as -105dBm by the A-GNSS method, -99dBm by the OTDOA method, and -102dBm by the E-CID, so the smallest error range is OTDOA. This is followed by the E-CID method, and the largest error positioning method is the A-GNSS method. The terminal may receive information on the error rank of the current location information reported according to each location method from the location server to grasp the information on which location method has a small error (S1180). In particular, the error ranking information on the current location information reported by the terminal according to each positioning method received in step S1180 may be displayed on the display unit 151 as shown in FIG. 12.

FIG. 12 is a diagram illustrating a form in which information about an error rank of current location information is displayed according to the embodiment of FIG. 11.

Referring to FIG. 12, the controller 180 displays a corresponding area calculated by each of the positioning methods A-GNSS, OTDOA, and E-CID by the display unit 151, respectively, and measures 3 measured by each positioning method. You can control the display of average points in dogs.

In addition, the controller 180 may control the display unit 151 to display the rank of the possibility that the error is small with respect to the current position measured according to each positioning method as shown in FIG. 12. In FIG. 11, the smallest error range is the OTDOA method, followed by the E-CID method, and the largest error location method is the A-GNSS method. Thus, the controller 180 displays a small error in the display unit 151. As an example, the ranking of the likelihood may be controlled to be displayed as shown in FIG. 12.

In addition, the location server may transmit the range information of the error calculated for each positioning method to the terminal (S1180). For example, the location server may calculate that the error range is 10m for the A-GNSS method, 25m for the OTDOA method, and 30m for the E-CID method. The terminal receiving the message may display the content on the display unit 151.

FIG. 13 is an exemplary diagram displayed on the display unit 151 when the location server calculates and transmits an error range for each positioning method.

Referring to FIG. 13, as in FIG. 12, the controller 180 displays the corresponding area calculated by each of the positioning methods A-GNSS, OTDOA, and E-CID. It can be controlled to display the average point of the three areas measured by. In addition, the controller 180 may control the display unit 151 to display the error range calculated by each positioning method (A-GNSS, OTDOA, E-CID) as shown in FIG. 13 for each positioning method. .

14A to 14C illustrate examples of displaying location information services according to a specific positioning method on the display unit 151 of the terminal.

The controller 180 may control the display unit 151 to display the information regarding the current position measured according to a specific positioning method in the form of a map MAP, for example, as shown in FIG. 14A.

In addition, when the terminal receives a location information request for a specific place (for example, a government office or a Chinese restaurant) near the current location from the user, the controller 180 determines a predetermined distance from the current location measured according to a specific positioning method. The display unit 151 may control the display unit 151 to display an address of a place (for example, a government office or a Chinese house) within a range, information about a distance from a current location, a phone number, and the like, which is displayed on the display unit 151. For example, it may be displayed in the form shown in FIGS. 14B and 14C.

The embodiments described above are the components and features of the present invention are combined in a predetermined form. Each component or feature shall be considered optional unless otherwise expressly stated. Each component or feature may be implemented in a form that is not combined with other components or features. It is also possible to construct embodiments of the present invention by combining some of the elements and / or features. The order of the operations described in the embodiments of the present invention may be changed. Some configurations or features of certain embodiments may be included in other embodiments, or may be replaced with corresponding configurations or features of other embodiments. It is clear that the claims that are not expressly cited in the claims may be combined to form an embodiment or be included in a new claim by an amendment after the application.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Accordingly, the above detailed description should not be construed as limiting in all aspects and should be considered as illustrative. The scope of the invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the invention are included in the scope of the invention.

Claims (20)

In the method for obtaining location information by the terminal,
Calculating a current position using a first location scheme;
Measuring a state of a received signal at the current location based on a signal received from at least one base station;
Transmitting the calculated information of the current location and the information of the received signal status at the measured current location to a second network node via a first network node; And
A message indicating that an error is greater than or equal to a threshold at a current position calculated by the first positioning scheme from a third network node or an error value when the error is less than a threshold at the current position calculated by the first positioning scheme. Receiving a message to the terminal, location information acquisition method of the terminal. The method of claim 1,
And receiving a signal for requesting current location information from the user. The method of claim 2,
Receiving a signal for requesting to calculate a current location from the user in a selected location manner;
The first location method is a location method selected from the user, the location information acquisition method of the terminal. The method of claim 1,
And displaying the received message. The method of claim 1,
Wherein the first network node is a base station, the second network node is a Minimization of Drive Test (MDT) server, and the third network node is a location server. In the terminal for obtaining location information,
A location information module for calculating a current location using a first location method; And
The received signal state is measured based on a signal received from at least one base station at the current location, and the calculated information on the current location and the information on the received signal state at the measured current location are passed through a first network node. A message indicating that an error is greater than or equal to a threshold at a current position calculated by the first positioning scheme or an error when the error is less than a threshold at a current position calculated by the first positioning scheme. And a mobile communication module configured to receive from the third network node a message containing a value. The method according to claim 6,
The terminal further comprises an interface for receiving a signal for requesting the current location information from the user. The method according to claim 6,
And displaying the error value or the message informing that the error is greater than or equal to a threshold at the current location. In the method for the first network node to provide the location information of the terminal,
A second network node including a measurement result including information on an error between a received signal value measured by the terminal based on a signal received from at least one base station at a current location and an average value of a pre-stored received signal for the current location; Receiving from;
Receiving current location information calculated by the terminal from the second network node or a third network node; And
And calculating an error of the current position calculated by the terminal based on at least one of the received current position information of the terminal and the measurement result. The method of claim 9,
And transmitting a message indicating that the calculated current position error is greater than or equal to a threshold value or a message including an error value to the terminal when the calculated current position error is less than a threshold value. How to give. The method of claim 9,
And wherein the first network node is a location server, the second network node is a Minimization of Drive Test (MDT) server, and the third network node is a base station. In the first network node device for providing location information of the terminal,
A second network node including a measurement result including information on an error between a received signal value measured by the terminal based on a signal received from at least one base station at a current location and an average value of a pre-stored received signal for the current location; A receiver for receiving from the second network node or a third network node the current location information calculated by the terminal; And
And a processor configured to calculate an error of a current position calculated by the terminal based on at least one of the received current position information of the terminal and the measurement result. 13. The method of claim 12,
The first network further comprises a transmitter for transmitting a message indicating that the error of the current position calculated by the processor is greater than or equal to a threshold, or a message including an error value when the calculated current position is less than a threshold. Node device. In the method for obtaining location information by the terminal,
Calculating a current position for each of the plurality of positioning methods by using a plurality of positioning methods;
Measuring a received signal state based on a signal received from at least one base station at the current location;
Transmitting the calculated plurality of current location information and information on a state of a received signal at the measured current location to a second network node via a first network node; And
Receiving from the third network node at least one of error rank information of the current position calculated and reported for each of the plurality of positioning methods and error range information of the current position calculated and reported for each of the plurality of positioning methods. Method of obtaining location information of the terminal. The method of claim 14,
And displaying at least one of the received error ranking information and the error range information. In the terminal for obtaining location information,
A location information module for calculating a current position for each of the plurality of positioning methods by using a plurality of positioning methods;
Measure a received signal state based on a signal received from at least one base station at the current location;
Transmitting the calculated current position information for each of a plurality of positioning methods and information on a reception signal state at the measured current position to a second network node via a first network node,
A mobile communication module that receives at least one of error rank information of a current position calculated and reported for each of the plurality of positioning methods and error range information of a current position calculated and reported for each of the plurality of positioning methods from a third network node. Including, the terminal. 17. The method of claim 16,
And a display configured to display at least one of the received error ranking information and the error range information. In the method for the first network node to provide the location information to the terminal,
A measurement result including information on an error between a received signal value measured by the terminal based on a received signal from at least one base station at a current location and an average value of the pre-stored received signal for the current location, from a second network node; Receiving;
Receiving, by the terminal, current location information calculated for each of a plurality of positioning methods from a third network node; And
And calculating at least one of an error rank and an error range for a current position of each of the plurality of received positioning methods. 19. The method of claim 18,
And transmitting at least one of an error rank and an error range for the current position for each of the plurality of positioning methods to the terminal. In the first network node device for providing location information to the terminal,
A measurement result including information on an error between a received signal value measured by the terminal based on a received signal from at least one base station at a current location and an average value of the pre-stored received signal for the current location, from a second network node; Receive,
A receiver for receiving, from a third network node, current location information calculated by the terminal for each of a plurality of positioning methods; And
And a processor configured to calculate at least one of an error rank and an error range for a current position of each of the plurality of received positioning methods.

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