KR20160001892A - location determination system for mobile terminal and controlling thereof - Google Patents

Abstract

The present invention relates to a location determining system for a mobile terminal and controlling method thereof. The location determining system comprises: determining terminal attached to a subscriber; a location determining node which collects location information through communications with a location determining terminal; a location determining gateway which collects location determining information and transmits the information to a location determining server; and a location determining server which calculates and estimates location using the location determining information. The location determining method related to an embodiment of this invention can comprise a step of: broadcasting periodically first information by the location determining terminal attached to at least one object; receiving the first information from the location determining terminal by at least one location determining node; transmitting second information determined corresponding to the received first information, by the at least one location determining node, to the location determining terminal; transmitting the first information and the second information, by the location determining terminal, to the location determining server; estimating a location of the at least one object by the location determining server using the first information and the second information; and transmitting location information of the estimated at least one object, by the location determining server, to a location determining gateway composing a mesh network.

Description

The present invention relates to a mobile terminal positioning system and a control method thereof,

The present invention relates to a mobile terminal positioning system and a control method thereof. More specifically, the present invention relates to a positioning terminal attached to a subscriber, a positioning node for collecting position information through communication with the positioning terminal, a positioning gateway for collecting positioning information and transmitting the positioning information to the positioning server, And a positioning system including a positioning server.

A positioning system refers to a system that recognizes the position of a fixed object or a moving object. One such positioning system is a global positioning system, a standard positioning system, and a GPS-assisted positioning system.

For example, the Global Navigation Satellite System (GNSS) refers to a system that provides information on the location, altitude, and speed of ground water using satellites. The GNSS is a global navigation satellite system The Global Navigation Satellite System (GNSS) is a satellite navigation system that uses a satellite orbiting the Earth's orbits. It can be called a global satellite navigation system, a global satellite navigation system, or a global satellite navigation system. It is a system that provides information on the position, altitude, and speed of objects on the ground. GNSS (Global Navigation Satellite System) can grasp precise location information with resolutions of 1m or less, and it can be widely used in civilian fields such as location guidance, geodesy, emergency structure, communication, .

On the other hand, as the use of terminals such as personal computers, notebooks, mobile phones and the like is increasing, there is a need for a system for accurately measuring the position of the mobile terminals.

Specifically, a terminal such as a personal computer, a notebook computer, a mobile phone, or the like can be configured to perform various functions. Examples of such various functions include a data and voice communication function, a function of photographing a video or a moving image through a camera, a voice storage function, a music file playback function through a speaker system, and an image or video display function. Some terminals include additional functions to execute games, and some other terminals are also implemented as multimedia devices. In recent years, a terminal can receive a broadcast or multicast signal and can watch a video or a television program. Generally, a mobile terminal is a mobile / portable terminal and a stationary terminal It can be divided. The mobile terminal can be divided into a handheld terminal and a vehicle mount terminal according to whether the user can directly carry the mobile terminal. Such a terminal has various functions, for example, , A multimedia player equipped with a combination of functions such as photographing and recording of movies, playback of music and video files, reception of games and broadcasting, and the like.

As the frequency of use of a mobile terminal providing various functions described above increases, a method of correctly grasping the position of the mobile terminal in real time is required, and a solution is sought.

Korean Intellectual Property Office Registration No. 10-0706342

The present invention relates to a positioning system including a positioning terminal attached to a subscriber, a positioning node for collecting position information through communication with the positioning terminal, a positioning gateway for collecting positioning information and transmitting the positioning information to the positioning server, To quickly and accurately locate a particular object using a positioning system that includes a positioning system.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not intended to limit the invention to the precise form disclosed. It can be understood.

A positioning terminal attached to at least one object related to an example of the present invention for realizing the above-described task periodically broadcasts first information, and at least one positioning node receives the first information from the positioning terminal And transmitting, by the positioning terminal, the first information and the second information to the positioning server, the positioning information being transmitted to the positioning server by the positioning terminal, ; And a positioning server estimating a position of the at least one object using the first information and the second information, wherein the first information includes at least one of 1 identification information, and the second information includes signal strength information for reception of the first information and second identification information for distinguishing each of the at least one positioning node, The method of claim 1, wherein when the second identification information is one, the positioning server estimates the position of the at least one object by: a previous position of the positioning terminal; A position of a first positioning node corresponding to the second identification information of the at least one positioning node; And a distance between the first positioning node and the positioning terminal determined by the signal strength information, to estimate the position of the at least one object.

According to another aspect of the present invention, there is provided a positioning method, comprising: periodically broadcasting first information, the positioning terminal attached to at least one object related to another embodiment of the present invention periodically transmitting at least one positioning information from the positioning terminal to the first information Transmitting, by the positioning terminal, the first information and the second information to a positioning server, the positioning server transmitting the first information to the positioning server, Transmitting; And a positioning server estimating a position of the at least one object using the first information and the second information, wherein the first information includes at least one of 1 identification information, and the second information includes signal strength information for reception of the first information and second identification information for distinguishing each of the at least one positioning node, The method of claim 1, wherein, when there are two pieces of second identification information, the positioning server estimates the position of the at least one object. A position of a first positioning node and a second positioning node corresponding to the second identification information among the at least one positioning node; A distance between the first positioning node and the positioning terminal determined by the position of the first positioning node and the signal strength information; And a distance between the second positioning node and the positioning terminal determined by the position of the second positioning node and the signal strength information.

According to another aspect of the present invention, there is provided a positioning method of a positioning terminal, the positioning terminal being attached to at least one object for periodically broadcasting first information, The positioning terminal transmits the first information and the second information to the positioning server. The positioning server transmits the first information and the second information to the positioning server, ; And a positioning server estimating a position of the at least one object using the first information and the second information, wherein the first information includes at least one of 1 identification information, and the second information includes signal strength information for reception of the first information and second identification information for distinguishing each of the at least one positioning node, A second positioning node corresponding to the second identification information among the at least one positioning node, a second positioning node corresponding to the first identification information, and a second positioning node corresponding to the second identification information, wherein the positioning server estimates the position of the at least one object, And the location of the third positioning node; A distance between the first positioning node and the positioning terminal determined by the position of the first positioning node and the signal strength information; A distance between the second positioning node and the positioning terminal determined by the position of the second positioning node and the signal strength information; And a distance between the third positioning node and the positioning terminal, which is determined by the position of the third positioning node and the signal strength information, to estimate the position of the at least one object.

According to the present invention configured as described above, a positioning terminal attached to a subscriber, a positioning node for collecting position information through communication with the positioning terminal, a positioning gateway for collecting positioning information and transmitting the positioning information to the positioning server, It is possible to quickly and accurately grasp the position of a specific object by using a positioning system including a positioning server for calculation and estimation.

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.

1 is a diagram illustrating an example of a terminal and a base station that can be applied to the present invention.
2 is a diagram showing an example of a terminal or a receiver applicable to the present invention.
3 shows an example of a mobile terminal positioning system according to the present invention.
FIG. 4 illustrates a specific example of a mobile terminal positioning system in which a plurality of mesh networks exist, according to the present invention.
5 is a flowchart for explaining concrete steps of the positioning information acquisition and transmission method in the context of the present invention.
6 is a table summarizing expected values of received signal strength used for position estimation.
7 is a diagram for explaining a method of estimating a position when there is only one received strength information.
8 is a diagram for explaining a method of estimating a position when there are only two pieces of reception intensity information.
9 is a diagram for explaining a method of estimating a position when there are three pieces of reception intensity information.

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.

In addition, the techniques, apparatuses, and systems described below can be applied to various wireless multiple access systems. Examples of multiple access systems include a code division multiple access (CDMA) system, a frequency division multiple access (FDMA) system, a time division multiple access (TDMA) system, an orthogonal frequency division multiple access (OFDMA) system, a single carrier frequency division multiple access (MC-FDMA) system, and a multi-carrier frequency division multiple access (MC-FDMA) system. CDMA may be implemented in wireless technologies such as Universal Terrestrial Radio Access (UTRA) or CDMA2000. TDMA may be implemented in wireless technologies such as Global System for Mobile communications (GSM), General Packet Radio Service (GPRS), Enhanced Data Rates for GSM Evolution (EDGE), and the like. OFDMA can be implemented in wireless technologies such as IEEE (Institute of Electrical and Electronics Engineers) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, and evolved-UTRA (E-UTRA). UTRAN is part of Universal Mobile Telecommunication System (UMTS), and 3GPP (Long Term Evolution) is part of E-UMTS using E-UTRAN. 3GPP LTE adopts OFDMA in the downlink and SC-FDMA in the uplink. LTE-Advanced (LTE-A) is an evolutionary form of 3GPP LTE. For convenience of explanation, it is assumed that the present invention is applied to 3GPP LTE / LTE-A. However, the technical features of the present invention are not limited thereto. For example, although the following detailed description is based on a wireless communication system that is compatible with 3GPP LTE / LTE-A systems, it is contemplated that other wireless communication systems, except those specific to 3GPP LTE / LTE- System.

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 present invention, a terminal may be fixed or mobile, and collectively refers to devices that transmit and receive various data and control information by communicating with a base station. The terminal may be a user equipment (UE), a mobile station (MS), a mobile terminal (MT), a user terminal (UT), a subscriber station (SS), a wireless device, a PDA modem, a handheld device, and the like.

In addition, a base station generally refers to a fixed station that communicates with a terminal or another base station, and exchanges various data and control information by communicating with the terminal and other base stations. The base station may be named with other terms such as an evolved-NodeB (eNB), a base transceiver system (BTS), an access point, and the like.

In the present invention, when a specific signal is allocated to a frame / subframe / slot / carrier / subcarrier, it means that a specific signal is transmitted through the corresponding carrier / subcarrier in the period or timing of the corresponding frame / subframe / slot.

In the present invention, the rank or transmission rank means the number of layers multiplexed or allocated on one OFDM symbol or one resource element.

In the present invention, the Physical Downlink Control Channel (PDCCH) / Physical Control Format Indicator CHannel / Physical Uplink Shared CHannel (PHICH) / Physical Downlink Shared CHannel (PDSCH) Control Format Indicator) / ACK / NACK (ACKnowledge / Negative ACK) for uplink transmission / downlink data.

The Physical Uplink Control CHannel (PUCCH) / Physical Uplink Shared CHannel (PUSCH) / Physical Random Access Channel (PRACH) refers to a set of resource elements for carrying Uplink Control Information (UCI) / uplink data / random access signals .

In particular, the PDCCH / PCFICH / PHICH / PHICH / PDSCH / PUCCH / PUSCH / PRACH resource elements (REs) assigned to or belong to the PDCCH / PCFICH / PHICH / PDSCH / PUCCH / / PDSCH / PUCCH / PUSCH / PRACH resource.

Accordingly, the expression that the UE transmits the PUCCH / PUSCH / PRACH can be used to mean that the uplink control information / uplink data / random access signal is transmitted on the PUSCH / PUCCH / PRACH. Also, the expression that the base station transmits the PDCCH / PCFICH / PHICH / PDSCH can be used in the same sense as to transmit the downlink control information / downlink data on the PDCCH / PCFICH / PHICH / PDSCH.

On the other hand, mapping ACK / NACK information to a specific constellation point has the same meaning as mapping ACK / NACK information to a specific complex modulation symbol. Also, mapping ACK / NACK information to a specific complex modulation symbol is used in the same sense as modulating ACK / NACK information to a specific complex modulation symbol.

FIG. 1 shows a configuration of a terminal and a base station which can be applied to the present invention.

The terminal operates as a transmitter in an uplink and as a receiver in a downlink. Conversely, the base station operates as a receiving apparatus in the uplink and operates as a transmitting apparatus in the downlink.

1, a terminal and a base station include antennas 500a and 500b capable of receiving information, data, signals or messages, transmitters 100a and 100b transmitting information, data, signals, 100b, a receiver 300a, 300b for controlling the antenna to receive information, data, a signal or a message, and a memory 200a, 200b for temporarily or permanently storing various information in the wireless communication system. In addition, the terminal and the base station include processors 400a and 400b, respectively, operatively connected to components such as a transmitter and a receiver, a memory, and the like, and configured to control each component.

The in-terminal transmitter 100a, the receiver 300a, the memory 200a and the processor 400a may be implemented as separate components by separate chips, ≪ / RTI > The transmitter 100b, the receiver 300b, the memory 200b and the processor 400b in the base station may be implemented as independent components by separate chips, ). ≪ / RTI > The transmitter and the receiver may be integrated into one transceiver in a terminal or a base station.

The antennas 500a and 500b transmit signals generated by the transmitters 100a and 100b to the outside or receive signals from the outside and transmit the signals to the receivers 300a and 300b. The antennas 500a and 500b are also referred to as antenna ports. The antenna port may correspond to one physical antenna or may be configured by a combination of a plurality of physical antennas. In case of a transceiver supporting multi-input multi-output (MIMO) function for transmitting and receiving data using a plurality of antennas, it can be connected to two or more antennas.

Processors 400a and 400b typically control the overall operation of various components or modules within a terminal or base station. Particularly, the processors 400a and 400b are provided with various control functions for performing the present invention, a MAC (Medium Access Control) variable control function according to service characteristics and a propagation environment, a power saving mode function for controlling an idle mode operation, A handover function, an authentication and encryption function, and the like. The processors 400a and 400b may also be referred to as a controller, a microcontroller, a microprocessor, or a microcomputer. Meanwhile, the processors 400a and 400b may be implemented by hardware or firmware, software, or a combination thereof.

When implementing the present invention using hardware, application specific integrated circuits (ASICs) or digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), FPGAs field programmable gate arrays) may be provided in the processors 400a and 400b.

Also, when the present invention is implemented using firmware or software, firmware or software may be configured to include a module, a procedure, or a function to perform the functions or operations of the present invention. The firmware or software may be contained within the processors 400a, 400b or may be stored in the memories 200a, 200b and driven by the processors 400a, 400b.

The transmitters 100a and 100b perform predetermined coding and modulation on signals or data scheduled to be transmitted from the schedulers connected to the processors 400a and 400b or the processors and then transmitted to the antennas 500a and 500b ). The transmitters 100a and 100b and the receivers 300a and 300b of the terminal and the base station may be configured differently according to a process of processing a transmission signal and a reception signal.

The memories 200a and 200b may store a program for processing and controlling the processors 400a and 400b, and may temporarily store input / output information. Also, the memories 200a and 200b can be utilized as buffers. The memory may be a flash memory type, a hard disk type, a multimedia card micro type or a card type memory (for example, SD or XD memory), a RAM (Random Access Memory), ROM (Read Only Memory), EEPROM (Electrically Erasable Programmable Read Only Memory), PROM (Programmable Read-Only Memory), magnetic memory, magnetic disk, An optical disc or the like.

2 is a diagram showing an example of a terminal or a receiver that can be applied to the present invention.

The terminal or receiver includes a wireless communication unit 110, an audio / video input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, 170, a control unit 180, a power supply unit 190, and the like. The components shown in Fig. 2 are not essential, so that a terminal or receiver having components with fewer 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 or receiver and the wireless communication system or between the terminal or receiver and the network in which the terminal or receiver 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 broadcast signals 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 refer to a server for generating and transmitting broadcast signals and / or broadcast related information, or a server for receiving broadcast signals and / or broadcast related information generated by the broadcast management server and transmitting the generated broadcast signals and / or broadcast related information. 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, an EPG (Electronic Program Guide) of DMB (Digital Multimedia Broadcasting) or an ESG (Electronic Service Guide) 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 (DVF-H) And a Digital Broadcasting System (ISDB-T) (Integrated Services Digital Broadcast-Terrestrial). 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 enclosed in a terminal or a receiver. WLAN (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access) and the like can be used as wireless Internet technologies.

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 position information module 115 is a module for acquiring the position of a terminal or a receiver, and a representative example thereof is a Global Position System (GPS) module.

2, 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 communication 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 the operation of the terminal. The user input unit 130 may include a key pad dome switch, a touch pad (static / static), a jog wheel, a jog switch, and the like.

The sensing unit 140 senses the current state of the terminal or the receiver, such as the open / close state of the terminal or the receiver, the position of the terminal or the receiver, the contact of the user, the orientation of the terminal or receiver, And generates a sensing signal for controlling the operation of the sensor. For example, when the terminal or the receiver is in the form of a slide phone, it is possible to sense whether the slide phone is opened or closed. It is also possible to sense whether the power supply unit 190 is powered on, whether the interface unit 170 is connected to an external device, and the like. Meanwhile, the sensing unit 140 may include a proximity sensor 141.

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) the information processed by the terminal or the receiver. For example, when a terminal or a receiver is in a call mode, a UI (User Interface) or a GUI (Graphic User Interface) associated with a call is displayed. When the terminal or the receiver is in the video communication mode or the photographing mode, the photographed and / or received video or UI and GUI are displayed.

The display unit 151 may be a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), a flexible display 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 depending on the implementation of the terminal or the receiver. For example, a terminal or a receiver may have a plurality of display portions which are spaced apart from each other, arranged integrally with each other, or arranged on different surfaces, respectively.

(Hereinafter, referred to as a 'touch screen') in which a display unit 151 and a sensor for sensing a touch operation (hereinafter, referred to as 'touch sensor') form a mutual layer structure, It 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. The touch controller processes the signal (s) and transmits the corresponding data to the controller 180. Thus, the control unit 180 can know which area of the display unit 151 is touched or the like.

The proximity sensor 141 may be disposed within an interior region of a terminal or receiver wrapped by the touch screen or in the vicinity of 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 type photoelectric sensor, a direct reflection fluorescent light sensor, a mirror reflection fluorescent light 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 recognizing that the pointer is positioned on the touch screen while the pointer is not in contact with the touch screen is referred to as "proximity touch & The act of actually touching the pointer on the screen is called "contact touch. &Quot; 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 audio 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 mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, The sound output module 152 also outputs sound signals related to functions (e.g., call signal reception sound, message reception sound, etc.) performed at the terminal or receiver. 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 the occurrence of an event of the terminal or the receiver. Examples of events that occur in a terminal or a receiver include call signal reception, message reception, key signal input, touch input, and the like. 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. The video signal or the audio signal may be output through the display unit 151 or the audio output module 152 so that they may be classified as a part of the alarm unit 153.

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 the vibration generated by the hit module 154 can be controlled. For example, different vibrations may be synthesized and output or sequentially output.

In addition to the vibration, the haptic module 154 may include a pin arrangement vertically moving with respect to the contact skin surface, a spraying force or a suction force of the air through the injection port or the suction port, a touch on the skin surface, contact with an electrode, And various tactile effects such as an effect of reproducing a cold sensation using an endothermic or exothermic element can be generated.

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. At least two haptic modules 154 may be provided according to the configuration of the portable terminal.

The projector module 155 is a component for performing an image project function using a terminal or a receiver and may be the same or at least the same as the image displayed on the display unit 151 in accordance with a control signal of the controller 180 Some can display other images 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 longitudinally on the side, front or back of the terminal or receiver. Needless to say, the projector module 155 may be provided at any position of the terminal or the receiver, if necessary.

The memory unit 160 may store a program for processing and controlling the control unit 180 and temporarily store the input / output data (e.g., telephone directory, message, audio, For example. The memory unit 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 unit 160 may store data on vibration and sound of various patterns output when the 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), a RAM (Random Access Memory), SRAM (Static Random Access Memory), ROM (Read Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM A disk, and / or an optical disk. A terminal or receiver may operate in connection with a web storage that performs storage functions of the memory 160 on the Internet.

The interface unit 170 serves as a communication path between the terminal and all external devices connected to the receiver. The interface unit 170 receives data from an external device, receives power from the external device, transfers the received data to each element in the terminal or the receiver, or transmits data in the terminal or the receiver 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 for storing various information for authenticating a usage right of a terminal or a receiver and includes a user identification module (UIM), a subscriber identity module (SIM), a universal user authentication module 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 can be connected to the terminal through the port.

The interface unit may be a path through which power from the cradle is supplied to the mobile terminal when the mobile terminal is connected to an external cradle or a channel through which various command signals input from the cradle by the user are transmitted to the mobile terminal . The various command signals or the power source input from the cradle may be operated as a signal for recognizing that the mobile terminal is correctly mounted on the cradle.

A controller 180 typically controls the overall operation of the terminal or receiver. 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 external power and internal power under the control of the controller 180 and supplies power necessary for operation of the respective components.

The various embodiments described herein may be embodied in a recording medium readable by a computer or similar device using, for example, software, hardware, or a combination thereof.

According to a hardware implementation, the embodiments described herein may be implemented as application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays May be implemented using at least one of a processor, controllers, micro-controllers, microprocessors, and other electronic units for performing other functions. In some cases, The embodiments described may be implemented by the control unit 180 itself.

According to a software implementation, embodiments such as the procedures and functions described herein may be implemented with separate software modules. Each of the software modules may perform one or more of the functions and operations described herein. Software code can be implemented in a software application written in a suitable programming language. The software code is stored in the memory 160 and can be executed by the control unit 180. [

Meanwhile, as the frequency of use of a mobile terminal providing various functions described above increases, a method of accurately grasping the position of the mobile terminal in real time is required, and a solution is sought.

Accordingly, the present invention provides a mobile terminal positioning system and a control method thereof to a user.

More specifically, the present invention relates to a positioning terminal attached to a subscriber, a positioning node for collecting position information through communication with the positioning terminal, a positioning gateway for collecting positioning information and transmitting the positioning information to the positioning server, And a positioning system including a positioning server.

Hereinafter, the present invention will be described in detail with reference to the drawings.

First, FIG. 3 shows an example of a mobile terminal positioning system according to the present invention.

As shown in FIG. 3, the mobile terminal positioning system proposed by the present invention includes a positioning terminal (SU) attached to a subscriber, a positioning node (LU) for collecting position information through communication with the SU, A positioning gateway (MU) for transmitting to the positioning server, and a positioning server for calculating and estimating the positioning using the positioning information.

In addition, the LUs are installed at predetermined locations according to the expected circulation of the SUs.

In addition, the positioning information of each SU collected by the SUs is reported to the positioning server through the LU and the MU, and the system control information transmitted from the positioning server is transmitted to the LUs through the MU.

3 shows a specific example of the arrangement of MUs and LUs in the mobile terminal positioning system described above.

In FIG. 3, the SU moves on a mesh network composed of MU and LU.

A positioning gateway (MU), a positioning node (LU), a positioning terminal (SU), and a positioning server constituting a mesh network will be described in detail with reference to FIG.

FIG. 4 illustrates a specific example of a mobile terminal positioning system in which a plurality of mesh networks exist, according to the present invention.

The positioning gateway (MU) will be described first with reference to Fig.

The MU forms a mesh network together with a plurality of LUs, and acts as a coordinator of the mesh network.

In addition, the MU exchanges information with LUs and SUs through the ZigBee protocol, and acts as a gateway for communication with an external network such as a positioning server.

Here, the location information of each SU is transmitted to the MU through the mesh network, and the MU reports the information to the positioning server using 3G / LTE or Ethernet.

Also, if the service area of the positioning system is wide, a plurality of mesh networks may be required. In this case, a plurality of MUs exist and LUs form a mesh network together with predetermined MUs.

If a particular MU does not operate normally, the LUs connected to the MU or the LUs attempting to form a network may be connected to other nearby MUs to form a mesh network.

Next, the positioning node (LU) will be described.

The LU exists in a fixed location and its location must be registered in the location server in advance.

As described above, each LU is connected to a specific MU to form a mesh network.

The positioning terminal SU will be described.

The SU can be generally attached to the subscriber as a terminal for location tracking.

Here, each SU periodically transmits a 1-hop broadcast message to acquire location information from neighboring LUs, and transmits the location information to the location server through the mesh network.

On the other hand, the positioning server estimates the position of the SU using the triangulation method based on the positioning information and the LU position information reported from the SU.

In addition, we use the existing estimated position information of each SU to minimize the estimation error for the new position.

Hereinafter, a method of acquiring positioning information and communicating information based on the above-described configuration will be described in detail.

5 is a flowchart for explaining concrete steps of the positioning information acquisition and transmission method in the context of the present invention.

Referring to FIG. 5, each SU periodically transmits a UE-specific information message, which is a 1-hop broadcast message.

In addition, neighboring LUs receiving the transmitted message transmit the positioning information message to the transmitting SU.

Herein, the positioning information message includes the unique number of the transmitting LU and the signal strength information measured at the time of receiving the unique information message transmitted from the SU.

In addition, the SU receiving the one or more positioning information messages combines the information to create a single UE positioning information message, and transmits the same to the MU via the LU and the like.

Then, the MU collects the terminal location information messages from the SUs, integrates these information, creates one integrated location information message, and transmits it to the location server.

A concrete position estimation method will be described with reference to FIG.

6 is a table summarizing expected values of received signal strength used for position estimation.

As shown in FIG. 6, the expected value of the received signal strength according to the distance is tabulated based on the transmission power of the LU and the installation height. For example, you can create the following table.

It can also use measured values in the open field.

Where P is the transmit power of the LU and the unit of receive power and transmit power is dBm. Values that do not exist in the table are interpolated using the values in the table.

At this time, the terminal location information message transmitted from the terminal includes the unique number of the SU neighbor LUs and the received signal strength information from each LU.

Based on this, the positioning server can estimate the position of the SU.

(2) the terminal location information message has two pieces of reception intensity information; (3) the terminal location information message has the same reception intensity information as the terminal location information message; A case where an information message has three or more reception intensity information can be divided into a case where a position of the SU is estimated by dividing each case.

Case1 : The terminal location information message  Single Reception strength  If you have information

7 is a diagram for explaining a method of estimating a position when there is only one received strength information.

Referring to FIG. 7, the distance R from the corresponding LU is inferred based on the received signal strength representative shown in FIG.

Based on the calculated distance, it is assumed that the position of the SU exists on a circle having a radius R around the LU. The intersection point between the latest estimated position of the SU and the line connecting the corresponding LU and the calculated circle is referred to as a new estimated position I decide.

Case2 : If the terminal location information message contains two Reception strength  If you have information

8 is a diagram for explaining a method of estimating a position when there are only two pieces of reception intensity information.

Referring to FIG. 8, the distance (R ₁ , R ₂ ) from each LU can be inferred based on the received signal strength representative shown in FIG.

Location of SU based on the calculated distance is assumed to exist at the point where the radius R _1-one and R ₂ circle intersect the center of each LU, and the intersection is the case with two new estimates near the intersection recently estimated Location Location .

Case3 : The terminal location information message three  ideal Reception strength  If you have information

In Case 3, information on three LUs is used in descending order of received signal strength.

The distance (R ₁ , R ₂ , R ₃ ) from each LU can be deduced based on the representative of the received signal strength shown in FIG.

At this time, let R ₁ ? R ₂ ? R ₃ . The new estimated position is determined by the ratio of the distance from three LUs to R ₁ : R ₂ : R ₃ . The concrete estimation method is the same as that shown in Fig.

9 is a diagram for explaining a method of estimating a position when there are three pieces of reception intensity information.

Referring to FIG. 9, an area including three LUs is set.

At this time, as shown in FIG. 9, a distance margin of D is set in the directions of north, south, east and west.

Also, divide the area by a grid of L units, and then calculate d ₁ , d ₂ , and d ₃ for each grid.

Then, for each grid, cost = K1 (d1 / d-R12) + K2 (d1 / d3-d12) is calculated assuming that the estimated distance ratio from RSSI is R1 / R2 = R12, R1 / R13) + K3 (d2 / d3-R23) is selected as the position of SU.

In the K ₁ ≥ K ₂ ≥ K ₃ is a weighting coefficient for each distance ratio error.

There is a need for a method for accurately grasping the position of the mobile terminal in real time as the frequency of use of the mobile terminal providing various functions increases.

Therefore, the present invention provides a positioning terminal that is attached to a subscriber, a positioning node that collects position information through communication with the positioning terminal, a positioning gateway that collects positioning information and transmits the positioning information to the positioning server, A positioning system including a server can be used to quickly and accurately locate a specific object.

Further, according to an embodiment of the present invention, the above-described method can be implemented as a code that can be read by a processor on a medium on which the program is recorded. Examples of the medium that can be read by the processor include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, etc., and may be implemented in the form of a carrier wave (e.g., transmission over the Internet) .

While the present invention has been described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims. It is understandable.

Claims (3)

A positioning terminal attached to at least one object periodically broadcasts first information, the at least one positioning node receiving the first information from the positioning terminal, the at least one positioning node transmitting the first information, 1 information to the positioning terminal, the positioning terminal transmitting the first information and the second information to the positioning server; And a positioning server estimating a position of the at least one object using the first information and the second information,
Wherein the first information includes first identification information for identifying the positioning terminal,
Wherein the second information includes signal strength information for reception of the first information and second identification information for distinguishing each of the at least one positioning node,
And the positioning server estimates the position of the at least one object when there is one second identification information included in the second information,
A position of a first positioning node corresponding to the second identification information among the at least one positioning node; And a distance between the first positioning node and the positioning terminal, which is determined by the signal strength information, to estimate the position of the at least one object. A positioning terminal attached to at least one object periodically broadcasts first information, the at least one positioning node receiving the first information from the positioning terminal, the at least one positioning node transmitting the first information, 1 information to the positioning terminal, the positioning terminal transmitting the first information and the second information to the positioning server; And a positioning server estimating a position of the at least one object using the first information and the second information,
Wherein the first information includes first identification information for identifying the positioning terminal,
Wherein the second information includes signal strength information for reception of the first information and second identification information for distinguishing each of the at least one positioning node,
And the positioning server estimates the position of the at least one object when the second identification information included in the second information is two,
A previous position of the positioning terminal; A position of a first positioning node and a second positioning node corresponding to the second identification information among the at least one positioning node; A distance between the first positioning node and the positioning terminal determined by the position of the first positioning node and the signal strength information; And a distance between the second positioning node and the positioning terminal determined by the position of the second positioning node and the signal strength information, and estimating the position of the at least one object. A positioning terminal attached to at least one object periodically broadcasts first information, the at least one positioning node receiving the first information from the positioning terminal, the at least one positioning node transmitting the first information, 1 information to the positioning terminal, the positioning terminal transmitting the first information and the second information to the positioning server; And a positioning server estimating a position of the at least one object using the first information and the second information,
Wherein the first information includes first identification information for identifying the positioning terminal,
Wherein the second information includes signal strength information for reception of the first information and second identification information for distinguishing each of the at least one positioning node,
And the positioning server estimates the position of the at least one object when the second identification information included in the second information is three,
A position of a first positioning node, a second positioning node and a third positioning node corresponding to the second identification information among the at least one positioning node; A distance between the first positioning node and the positioning terminal determined by the position of the first positioning node and the signal strength information; A distance between the second positioning node and the positioning terminal determined by the position of the second positioning node and the signal strength information; And a distance between the third positioning node and the positioning terminal determined by the position of the third positioning node and the signal intensity information, and estimating the position of the at least one object.

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