WO2020141640A1

WO2020141640A1 - Electronic device

Info

Publication number: WO2020141640A1
Application number: PCT/KR2019/000114
Authority: WO
Inventors: 정정윤; 신치호
Original assignee: 엘지전자 주식회사
Priority date: 2019-01-03
Filing date: 2019-01-03
Publication date: 2020-07-09

Abstract

An electronic device is disclosed. The electronic device, according to one embodiment of the present invention, comprises: a wireless communication unit which transmits and receives a wireless signal; and a processor which transmits a first signal to the outside, acquires the distance from a mobile terminal on the basis of RTT by using a response signal for the first signal, transmits a beamforming signal in a plurality of directions, acquires the direction of the mobile terminal on the basis of RSSI by using a response signal for the beamforming signal, and provides a service for the mobile terminal by using the distance and the direction.

Description

Electronic device

The present invention relates to an electronic device capable of providing an artificial intelligence service based on a user's location by obtaining a distance from an external device based on RTT and determining an external device's location based on RSSI.

Artificial intelligence is a field of computer science and information technology that studies how computers can do thinking, learning, and self-development that human intelligence can do. It means to be able to imitate.

In addition, artificial intelligence does not exist by itself, but has many connections directly or indirectly with other fields of computer science. In particular, in recent years, attempts have been made to actively utilize artificial intelligence elements in various fields of information technology to solve problems in those fields.

2. Description of the Related Art Recently, artificial intelligence devices that locate a mobile terminal and provide various services based on the location of the mobile terminal have been developed.

On the other hand, the conventional method for locating a mobile terminal is limited to recognizing a distance based on RSSI or measuring a location based on RTT.

On the other hand, the RSSI-based distance recognition method has a large error due to surrounding environments, places and obstacles, and the movement of a mobile terminal, and the RTT-based location measurement method requires at least three devices.

In addition, in order to provide a user location based AI service, there is a problem in that a connection setting procedure of a device such as a pin code input is required.

The present invention is to solve the above-described problem, the object of the present invention is to obtain a distance from an external device based on RTT and determine the location of the external device by obtaining the direction of the external device based on RSSI, based on user location This is to provide an electronic device capable of providing artificial intelligence services.

An electronic device according to an embodiment of the present invention, a wireless communication unit that transmits and receives a wireless signal, and transmits a first signal to the outside and uses a response signal for the first signal based on RTT to establish a connection with the mobile terminal. Acquiring a distance, transmitting a beamforming signal in a plurality of directions, obtaining a direction of the mobile terminal using a response signal to the beamforming signal based on RSSI, and using the distance and the direction to the mobile terminal It includes a processor that provides services for.

An operation method of an electronic device according to an embodiment of the present invention includes transmitting a first signal to the outside, obtaining a distance from a mobile terminal by using a response signal to the first signal based on RTT, a plurality of Transmitting a beamforming signal in a direction, obtaining a direction of the mobile terminal using a response signal to the beamforming signal based on RSSI, and service for the mobile terminal using the distance and the direction It includes the steps of providing.

Since the present invention combines RSSI and RTT to determine the location of the mobile terminal, it minimizes errors due to surrounding environment, obstacles, movement of the mobile terminal, etc., and has the advantage that the electronic device alone can locate the mobile terminal. In addition, due to these advantages, the present invention can be particularly efficiently used in a house having a complicated structure and many obstacles.

In addition, the present invention has an advantage that can provide a user-customized service by receiving information about the user during automatic connection.

In the present invention, since the beamforming signal is transmitted in a plurality of directions to determine the direction of the mobile terminal, the greater the distance between the electronic device and the mobile terminal, the greater the error in direction. However, according to the present embodiment, as the distance from the mobile terminal increases, the beamforming signal is transmitted while forming a dense angle, so that the error increases as the distance increases.

According to the present invention, after predicting that there is a mobile terminal between two directions having a large received signal sensitivity, a second beamforming signal is transmitted between two directions having a large received signal sensitivity and the direction is determined using the second beamforming signal. By measuring, there is an advantage that can more accurately measure the direction of the mobile terminal.

In the present invention, since the beamforming signal is transmitted in a plurality of directions to determine the direction of the mobile terminal, the greater the distance between the electronic device and the mobile terminal, the greater the error in direction. However, according to the present embodiment, since the distance from the mobile terminal is farther, the beamforming signal is additionally transmitted to measure the direction, so that the error can be prevented from increasing as the distance increases.

In addition, since the measurement error is small when the distance is close, even in this case, when the beamforming signal is additionally transmitted, a delay is caused and the effect of reducing the measurement error may be insignificant. Therefore, the shorter the distance is, the less the number of beamforming signals are transmitted, which has the advantage of quickly determining the direction of the mobile terminal.

According to the present invention, even without a separate input for establishing a connection, such as a pin code input, there is an advantage that the connection can be automatically established by detecting the access of the mobile terminal.

1A is a block diagram illustrating a terminal related to the present invention.

1B is a block diagram illustrating an electronic device related to the present invention.

2 is a view for explaining a method of operating an electronic device according to an embodiment of the present invention.

3 is a diagram for explaining a method of obtaining a distance from a mobile terminal based on RTT according to an embodiment of the present invention.

4 is a diagram for explaining a method of obtaining a direction of a mobile terminal based on RSSI according to an embodiment of the present invention.

5 is a diagram for explaining a method of obtaining a direction of a mobile terminal based on RSSI according to another embodiment of the present invention.

6 is a view for explaining a method for automatically establishing a connection with a mobile terminal according to an embodiment of the present invention.

7 is a view for explaining a method of providing a service for a mobile terminal according to an embodiment of the present invention.

Hereinafter, exemplary embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar elements are assigned the same reference numbers regardless of the reference numerals, and overlapping descriptions thereof will be omitted. The suffixes "modules" and "parts" for components used in the following description are given or mixed only considering the ease of writing the specification, and do not have meanings or roles that are distinguished from each other. In addition, in describing the embodiments disclosed in this specification, detailed descriptions of related well-known technologies are omitted when it is determined that they may obscure the gist of the embodiments disclosed herein. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical spirit disclosed in the specification is not limited by the accompanying drawings, and all modifications included in the spirit and technical scope of the present invention , It should be understood to include equivalents or substitutes.

Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from other components.

When an element is said to be "connected" or "connected" to another component, it is understood that other components may be directly connected or connected to the other component, but other components may exist in the middle. It should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that no other component exists in the middle.

The terminals described herein include mobile phones, smart phones, laptop computers, digital broadcasting terminals, personal digital assistants (PDAs), portable multimedia players (PMPs), navigation, and slate PCs. It may include a tablet PC (tablet PC), ultrabook (ultrabook), wearable device (wearable device, for example, a watch-type terminal (smartwatch), glass-type terminal (smart glass), HMD (head mounted display), etc. .

1A is a block diagram illustrating a terminal related to the present invention.

The terminal 100 according to the embodiment described in this specification may also be applied to a fixed terminal such as a smart TV, a desktop computer, and a digital signage.

In addition, the terminal 100 according to an embodiment of the present invention may be applied to a fixed or movable robot.

In addition, the terminal 100 according to an embodiment of the present invention may perform the function of a voice agent. The voice agent may be a program that recognizes a user's voice and outputs a response suitable for the recognized user's voice as a voice.

The terminal 100 includes a wireless communication unit 110, an input unit 120, a running processor 130, a sensing unit 140, an output unit 150, an interface unit 160, a memory 170, a processor 180, and It may include a power supply 190.

The wireless communication unit 110 may include at least one of 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 mobile communication module 112 includes technical standards or communication methods for mobile communication (eg, Global System for Mobile Communication (GSM), Code Division Multi Access (CDMA), Code Division Multi Access 2000 (CDMA2000), EV -Enhanced Voice-Data Optimized or Enhanced Voice-Data Only (DO), Wideband CDMA (WCDMA), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution (LTE), LTE-A (Long Term Evolution-Advanced) transmits and receives wireless signals to and from at least one of a base station, an external terminal, and a server on a mobile communication network constructed according to (Long Term Evolution-Advanced).

The wireless Internet module 113 refers to a module for wireless Internet access, and may be built in or external to the terminal 100. The wireless Internet module 113 is configured to transmit and receive wireless signals in a communication network according to wireless Internet technologies.

Wireless Internet technologies include, for example, WLAN (Wireless LAN), Wi-Fi (Wireless-Fidelity), Wi-Fi (Wireless Fidelity) Direct, DLNA (Digital Living Network Alliance), WiBro (Wireless Broadband), WiMAX (World) Interoperability for Microwave Access (HSDPA), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution (LTE), and Long Term Evolution-Advanced (LTE-A).

The short-range communication module 114 is for short-range communication, Bluetooth™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, NFC (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, Wireless USB (Wireless Universal Serial Bus) using at least one of the technology, it can support short-range communication.

The location information module 115 is a module for acquiring a location (or current location) of a mobile terminal, and typical examples thereof include a Global Positioning System (GPS) module or a Wireless Fidelity (WiFi) module. For example, if the terminal utilizes a GPS module, the location of the mobile terminal can be acquired using a signal sent from a GPS satellite.

The input unit 120 may include a camera 121 for inputting a video signal, a microphone 122 for receiving an audio signal, and a user input unit 123 for receiving information from a user.

The voice data or image data collected by the input unit 120 may be analyzed and processed by a user's control command.

The input unit 120 is for input of image information (or signals), audio information (or signals), data, or information input from a user. For input of image information, the terminal 100 includes one or more cameras It may be provided with (121).

The camera 121 processes image frames such as still images or moving pictures obtained by an image sensor in a video call mode or a shooting mode. The processed image frame may be displayed on the display unit 151 or stored in the memory 170.

The microphone 122 processes external sound signals as electrical voice data. The processed voice data may be used in various ways according to a function (or a running application program) being performed by the terminal 100. Meanwhile, various noise reduction algorithms for removing noise generated in the process of receiving an external sound signal may be implemented in the microphone 122.

The user input unit 123 is for receiving information from a user. When information is input through the user input unit 123,

The processor 180 may control the operation of the terminal 100 to correspond to the inputted information.

The user input unit 123 is a mechanical input means (or a mechanical key, for example, a button located on the front or rear or side of the terminal 100, a dome switch, a jog wheel, a jog switch, etc.) ) And a touch-type input means. As an example, the touch-type input means is made of a virtual key, a soft key or a visual key displayed on the touch screen through software processing, or a part other than the touch screen It may be made of a touch key (touch key) disposed on.

The learning processor 130 may be configured to receive, classify, store, and output information to be used for data mining, data analysis, intelligent decision making, and machine learning algorithms and techniques.

The learning processor 130 may be received, detected, detected, generated, predefined, or otherwise output by the terminal or communicated with other components, devices, terminals, or terminals in a received, detected, detected, generated, predefined, or otherwise manner It may include one or more memory units configured to store data output by the device.

The learning processor 130 may include a memory integrated or implemented in a terminal. In some embodiments, the learning processor 130 may be implemented using the memory 170.

Alternatively or additionally, the learning processor 130 may be implemented using memory associated with the terminal, such as external memory coupled directly to the terminal or memory maintained in a server communicating with the terminal.

In another embodiment, the learning processor 130 may be implemented using memory maintained in a cloud computing environment, or other remote memory location accessible by a terminal through a communication method such as a network.

The learning processor 130 typically includes one or more databases for identifying, indexing, categorizing, manipulating, storing, retrieving, and outputting data for use in supervised or unsupervised learning, data mining, predictive analytics, or other machines. It can be configured to store on.

The information stored in the learning processor 130 can be utilized by one or more other controllers of the processor 180 or terminal using any of a variety of different types of data analysis algorithms and machine learning algorithms.

Examples of these, algorithms, k-recent neighbor systems, fuzzy logic (eg probability theory), neural networks, Boltzmann machines, vector quantization, pulse neural networks, support vector machines, maximum margin classifier, hill climbing, inductive logic system Bayesian network , Peritnet (e.g. finite state machine, milli machine, Moore finite state machine), classifier tree (e.g. perceptron tree, support vector tree, Markov tree, decision tree forest, random forest), stake models and systems, artificial Convergence, sensor fusion, image fusion, reinforcement learning, augmented reality, pattern recognition, automated planning, and more.

The processor 180 may determine or predict at least one executable action of the terminal based on the generated information, or determined using data analysis and machine learning algorithms. To this end, the processor 180 may request, search, receive, or utilize data of the learning processor 130, and may use the terminal to perform a predicted operation or an operation determined to be preferable among the at least one executable operation. Can be controlled.

The processor 180 may perform various functions for implementing intelligent emulation (ie, a knowledge-based system, a reasoning system, and a knowledge acquisition system). It can be applied to various types of systems (eg, fuzzy logic systems), including adaptive systems, machine learning systems, artificial neural networks, and the like.

The processor 180 also involves speech and natural language speech processing, such as an I/O processing module, an environmental condition module, a speech-to-text (STT) processing module, a natural language processing module, a work flow processing module, and a service processing module. It may include sub-modules that enable calculation.

Each of these sub-modules can have access to one or more systems or data and models at the terminal, or a subset or superset thereof. In addition, each of these sub-modules can provide various functions, including vocabulary index, user data, work flow model, service model, and automatic speech recognition (ASR) system.

In other embodiments, other aspects of the processor 180 or terminal may be implemented with the submodules, systems, or data and models.

In some examples, based on data from the running processor 130, the processor 180 may be configured to detect and detect requirements based on the user's intention or contextual conditions expressed in user input or natural language input.

The processor 180 may actively derive and acquire information necessary to completely determine a requirement based on a context condition or a user's intention. For example, the processor 180 may actively derive information necessary to determine a requirement by analyzing historical data including historical input and output, pattern matching, unambiguous words, and input intention.

The processor 180 may determine a task flow for executing a function that responds to a requirement based on a context condition or a user's intention.

The processor 180 collects, detects, extracts, and detects signals or data used in data analysis and machine learning operations through one or more sensing components in the terminal, in order to collect information for processing and storage in the learning processor 130 And/or receive.

Collecting information may include sensing information through a sensor, extracting information stored in the memory 170, or receiving information from another terminal, entity, or external storage device through communication means.

The processor 180 may collect and store usage history information in the terminal.

The processor 180 may use the stored usage history information and predictive modeling to determine the best match for executing a specific function.

The processor 180 may receive or sense surrounding environment information or other information through the sensing unit 140.

The processor 180 may receive a broadcast signal and/or broadcast-related information, a radio signal, and radio data through the radio communication unit 110.

The processor 180 may receive image information (or a corresponding signal), audio information (or a corresponding signal), data, or user input information from the input unit 120.

The processor 180 collects information in real time, processes or classifies information (for example, a knowledge graph, command policy, personalization database, conversation engine, etc.), and processes the processed information in the memory 170 or the learning processor 130 ).

When the operation of the terminal is determined based on data analysis and machine learning algorithms and techniques, the processor 180 can control the components of the terminal to perform the determined operation. In addition, the processor 180 may perform the determined operation by controlling the terminal according to the control command.

When a specific operation is performed, the processor 180 analyzes historical information indicating execution of a specific operation through data analysis and machine learning algorithms and techniques, and performs updating of previously learned information based on the analyzed information. Can.

Accordingly, the processor 180 may improve the accuracy of future performance of data analysis and machine learning algorithms and techniques based on the updated information along with the learning processor 130.

The sensing unit 140 may include one or more sensors for sensing at least one of information in the mobile terminal, surrounding environment information surrounding the mobile terminal, and user information.

For example, the sensing unit 140 includes a proximity sensor 141, an illumination sensor 142, a touch sensor, an acceleration sensor, a magnetic sensor, and gravity G-sensor, gyroscope sensor, motion sensor, RGB sensor, infrared sensor (IR sensor), fingerprint scan sensor, ultrasonic sensor , Optical sensor (e.g., camera (see 121)), microphone (refer to 122), battery gauge, environmental sensor (e.g. barometer, hygrometer, thermometer, radioactivity sensor, Thermal sensor, gas sensor, etc.), and a chemical sensor (eg, an electronic nose, a health care sensor, a biometric sensor, etc.). Meanwhile, the mobile terminal disclosed in the present specification may combine and use information sensed by at least two or more of these sensors.

The output unit 150 is for generating output related to vision, hearing, or tactile sense, and includes at least one of a display unit 151, an audio output unit 152, a hap tip module 153, and an optical output unit 154 can do.

The display unit 151 displays (outputs) information processed by the terminal 100. For example, the display unit 151 may display execution screen information of an application program driven by the terminal 100, or UI (User Interface) or GUI (Graphic User Interface) information according to the execution screen information.

The display unit 151 may form a mutual layer structure with the touch sensor or may be integrally formed, thereby realizing a touch screen. The touch screen may function as a user input unit 123 that provides an input interface between the terminal 100 and the user, and at the same time, provide an output interface between the terminal 100 and the user.

The audio output unit 152 may output audio data received from the wireless communication unit 110 or stored in the memory 170 in a call signal reception, call mode or recording mode, voice recognition mode, broadcast reception mode, or the like.

The audio output unit 152 may include at least one of a receiver, a speaker, and a buzzer.

The haptic module 153 generates various tactile effects that the user can feel. A typical example of the tactile effect generated by the haptic module 153 may be vibration.

The light output unit 154 outputs a signal for notifying the occurrence of an event using the light of the light source of the terminal 100. Examples of events generated in the terminal 100 may include receiving messages, receiving call signals, missed calls, alarms, schedule notifications, receiving emails, and receiving information through applications.

The interface unit 160 serves as a passage with various types of external devices connected to the terminal 100. The interface unit 160 connects a device equipped with a wired/wireless headset port, an external charger port, a wired/wireless data port, a memory card port, and an identification module. It may include at least one of a port, an audio input/output (I/O) port, a video input/output (I/O) port, and an earphone port. In the terminal 100, in response to an external device being connected to the interface unit 160, appropriate control related to the connected external device may be performed.

Meanwhile, the identification module is a chip that stores various information for authenticating the usage rights of the terminal 100, a user identification module (UIM), a subscriber identity module (SIM), and a universal user authentication module (universal subscriber identity module; USIM). The device provided with the identification module (hereinafter referred to as an'identification device') may be manufactured in a smart card format. Accordingly, the identification device may be connected to the terminal 100 through the interface unit 160.

The memory 170 stores data supporting various functions of the terminal 100.

The memory 170 is a plurality of application programs (application programs or applications) running in the terminal 100, data for the operation of the terminal 100, instructions, data for the operation of the running processor 130 Fields (eg, at least one algorithm information for machine learning, etc.).

The processor 180 controls the overall operation of the terminal 100 in addition to the operations related to the application program. The processor 180 may provide or process appropriate information or functions to the user by processing signals, data, information, etc. input or output through the above-described components or by driving an application program stored in the memory 170.

In addition, the processor 180 may control at least some of the components described with reference to FIG. 1A in order to drive an application program stored in the memory 170. Furthermore, the processor 180 may operate by combining at least two or more of the components included in the terminal 100 for driving the application program.

Under the control of the processor 180, the power supply unit 190 receives external power and internal power to supply power to each component included in the terminal 100. The power supply unit 190 includes a battery, and the battery may be a built-in battery or a replaceable battery.

Meanwhile, as described above, the processor 180 controls the operation related to the application program and generally the overall operation of the terminal 100. For example, when the state of the mobile terminal satisfies a set condition, the processor 180 may execute or release a lock state that restricts input of a user's control command to applications.

1B is a diagram for describing an electronic device according to an embodiment of the present invention.

1B, it is described that the electronic device according to an embodiment of the present invention is a display device. However, the present disclosure is not limited thereto, and the electronic device according to an embodiment of the present invention may be applied to electronic devices capable of transmitting a wireless signal and a beam forming signal.

An electronic device according to an embodiment of the present invention is, for example, an intelligent electronic device in which a computer support function is added to a broadcast reception function, while an Internet function or the like is added while faithful to the broadcast reception function, a handwritten input device, a touch screen Or, it may have a more convenient interface such as a space remote control. And, it is connected to the Internet and a computer with the support of a wired or wireless Internet function, and it is also possible to perform functions such as email, web browsing, banking, or games. A standardized general-purpose OS can be used for these various functions.

Accordingly, since the electronic device described in the present invention can be freely added or deleted in various applications, for example, on a general-purpose OS kernel, various user-friendly functions can be performed. The electronic device may be, for example, a network TV, an HBBTV, a smart TV, an LED TV, or an OLED TV, and may be applied to a smartphone in some cases.

Referring to FIG. 1B, the electronic device 200 includes a broadcast receiving unit 230, an external device interface unit 235, a storage unit 240, a user input interface unit 250, a control unit 270, and a local area communication unit 273. , A display unit 280, an audio output unit 285, and a power supply unit 290.

The broadcast reception unit 230 may include a tuner 231, a demodulation unit 232, and a network interface unit 233.

The tuner 231 may select a specific broadcast channel according to a channel selection command. The tuner 231 may receive a broadcast signal for a selected specific broadcast channel.

The demodulator 232 may separate the received broadcast signal into a video signal, an audio signal, and a data signal related to a broadcast program, and restore the separated video signal, audio signal, and data signal to a form capable of output.

The external device interface unit 235 may receive an application or a list of applications in an adjacent external device, and transmit it to the control unit 270 or the storage unit 240.

The external device interface unit 235 may provide a connection path with the external device. The external device interface 235 may receive one or more of video and audio output from the external device, and transmit them to the controller 270. The external device connectable to the external device interface unit 235 may be any one of a set top box, a Blu-ray player, a DVD player, a game machine, a sound bar, a smartphone, a PC, a USB memory, and a home theater.

The network interface unit 233 may provide an interface for connecting the electronic device 200 to a wired/wireless network including an Internet network. The network interface unit 233 may transmit or receive data with other users or other electronic devices through a connected network or another network linked to the connected network.

In addition, some content data stored in the electronic device 200 may be transmitted to another user registered in advance in the electronic device 200 or to a selected user or selected electronic device among other electronic devices.

The network interface unit 233 may access a predetermined web page through a connected network or another network linked to the connected network. That is, it is possible to connect to a predetermined web page through a network and transmit or receive data with the corresponding server.

Also, the network interface unit 233 may receive content or data provided by a content provider or a network operator. That is, the network interface unit 233 may receive content such as a movie, advertisement, game, VOD, broadcast signal, and related information provided by a content provider or a network provider through a network.

Also, the network interface unit 233 may receive update information and update files of firmware provided by a network operator, and may transmit data to the Internet or a content provider or a network operator.

The network interface unit 233 may select and receive a desired application from among applications that are open to the public through a network.

The storage unit 240 may store programs for each signal processing and control in the control unit 270, and store a signal-processed image, audio, or data signal.

Also, the storage unit 240 may perform a function for temporarily storing an image, audio, or data signal input from the external device interface unit 235 or the network interface unit 233, and is predetermined through a channel memory function. You can also store information about the image.

The storage unit 240 may store an application or application list input from the external device interface unit 235 or the network interface unit 233.

The electronic device 200 may play a content file (video file, still image file, music file, document file, application file, etc.) stored in the storage unit 240 and provide it to the user.

The user input interface unit 250 may transmit a signal input by the user to the control unit 270 or a signal from the control unit 270 to the user. For example, the user input interface unit 250 may be configured according to various communication methods such as Bluetooth, Ultra Wideband (WB), ZigBee, Radio Frequency (RF) communication, or IR (IR) communication. A control signal such as power on/off, channel selection, screen setting, etc. may be received and processed from the remote control device, or a control signal from the control unit 270 may be transmitted to the remote control device.

In addition, the user input interface unit 250 may transmit a control signal input from a local key (not shown) such as a power key, a channel key, a volume key, and a set value to the control unit 270.

The image signal processed by the control unit 270 may be input to the display unit 280 and displayed as an image corresponding to the corresponding image signal. Also, the image signal processed by the control unit 270 may be input to an external output device through the external device interface unit 235.

The audio signal processed by the control unit 270 may be audio output to the audio output unit 285. In addition, the voice signal processed by the control unit 270 may be input to the external output device through the external device interface unit 235.

In addition, the controller 270 may control the overall operation in the electronic device 200.

In addition, the control unit 270 may control the electronic device 200 by a user command or an internal program input through the user input interface unit 250, and access the network to display a list of applications or applications desired by the user. It can be made available for download within (200).

The control unit 270 allows the channel information or the like selected by the user to be output through the display unit 280 or the audio output unit 285 together with the processed image or audio signal.

In addition, the control unit 270 according to an external device image playback command received through the user input interface unit 250, from an external device input through the external device interface unit 235, for example, a camera or a camcorder, The video signal or the audio signal can be output through the display unit 280 or the audio output unit 285.

Meanwhile, the control unit 270 may control the display unit 280 to display an image, for example, a broadcast image input through the tuner 231, or an external input input through the external device interface unit 235. The image or an image input through the network interface unit or an image stored in the storage unit 240 may be controlled to be displayed on the display unit 280. In this case, the image displayed on the display unit 280 may be a still image or a video, and may be a 2D image or a 3D image.

In addition, the control unit 270 may control content stored in the electronic device 200 or received broadcast content, external input content input from the outside to be played, and the content may be broadcast video, external input video, audio file , Still images, connected web screens, and document files.

The short-range communication unit 273 may communicate with an external device through wired or wireless communication. The short-range communication unit 273 may perform short-range communication with an external device. To this end, the short-range communication unit 273 includes Bluetooth (Bluetooth™), Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, Near Field Communication (NFC), Wi-Fi By using at least one of (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technology, short-range communication can be supported. The short-range communication unit 273 may be provided between the electronic device 200 and a wireless communication system, between the electronic device 200 and another electronic device 200, or through the electronic device 200 through wireless area networks. The electronic device 200 or an external server may support wireless communication between networks. The wireless local area network may be wireless personal area networks.

Here, the other electronic device 200 is a wearable device capable of exchanging data with the electronic device 200 according to the present invention (or interoperable), for example, a smartwatch, a smart glass (smart glass), HMD (head mounted display), can be a mobile terminal such as a smart phone. The short-range communication unit 273 may detect (or recognize) a wearable device capable of communication in the vicinity of the electronic device 200. Furthermore, when the sensed wearable device is a device authenticated to communicate with the electronic device 200 according to the present invention, the control unit 270 may transmit at least a portion of data processed by the electronic device 200 to the short-range communication unit 273. It can be transmitted to the wearable device. Therefore, a user of the wearable device can use data processed by the electronic device 200 through the wearable device.

The display unit 280 converts the image signal, data signal, OSD signal, or image signal received from the external device interface unit 235 processed by the control unit 270 into R, G, and B signals, respectively, and then drives them. You can generate a signal.

Meanwhile, the electronic device 200 shown in FIG. 1B is only an embodiment of the present invention. Some of the illustrated components may be integrated, added, or omitted according to specifications of the electronic device 200 that is actually implemented.

That is, two or more components may be combined into one component, or one component may be divided into two or more components as necessary. In addition, the function performed in each block is for explaining an embodiment of the present invention, the specific operation or device does not limit the scope of the present invention.

According to another embodiment of the present invention, the electronic device 200 does not have a tuner 231 and a demodulator 232, as shown in FIG. 1B, and has a network interface 233 or an external device interface ( 235) may be received and reproduced.

For example, the electronic device 200 is divided into an image processing device such as a set-top box for receiving broadcast signals or contents according to various network services, and a content playback device for playing content input from the image processing device. Can be implemented.

In this case, the operation method of the electronic device according to an embodiment of the present invention will be described below, as well as the electronic device 200 as described with reference to FIG. 1B, as well as an image processing device or display unit such as the separated set-top box ( 280) and an audio output unit 285.

Meanwhile, in the present invention, the term short-range communication unit 273 may be used interchangeably with the term wireless communication unit 273.

Meanwhile, in the present invention, the term controller 2740 may be used interchangeably with terms such as a processor, a microprocessor, a controller, and a microcontroller.

Meanwhile, the configuration and function of the electronic device 200 are not limited to those described with reference to FIG. 1B, and some or all of the configuration and function of the mobile terminal 100 described with reference to FIG. 1A may be mounted on the electronic device 200.

The operation method of the electronic device 200 according to an embodiment of the present invention includes transmitting a first signal to the outside (S210), and obtaining a distance from the mobile terminal using a response signal for the first signal based on RTT Step (S220), transmitting a beam forming signal in a plurality of directions (S230), obtaining a direction of a mobile terminal using a response to a beam forming signal based on RSSI (S240) and using distance and direction To provide a service for the mobile terminal (S250).

The step of transmitting the first signal to the outside (S210) and the step of obtaining the distance from the mobile terminal using the response signal for the first signal based on RTT (S220) will be described with reference to FIG. 3.

When a peripheral device is searched using Bluetooth LE technology, the processor of the electronic device 200 transmits the first signal to the outside and uses the response signal for the first signal based on the RTT to determine the distance from the mobile terminal 100. Can be obtained.

Round Trip Time (RTT) means round trip delay time. Specifically, RTT (Round Trip Time) may mean a round-trip time from when the signal is transmitted from the transmitting side and transmitted to the receiving side until the response signal reaches the transmitting side again.

Therefore, in this specification, obtaining a distance from a mobile terminal based on RTT (Round Trip Time), the electronic device 200 and the mobile terminal 100 using the round-trip delay time for the signal transmitted from the electronic device 200 It can mean that you get the distance.

Specifically, the processor of the electronic device 200 may transmit the first signal 310. In addition, the processor of the mobile terminal 100 that has received the first signal may transmit a response signal 320 to the first signal. In this case, the processor of the electronic device 200 moves with the electronic device 200 by using the time taken from the time when the first signal is transmitted to the time when the response signal for the first signal is received and the speed of the first signal. The distance between the terminals 100 can be obtained. In this case, the first signal and the response signal for the first signal may be signals of the same type (for example, both the first signal and the response signal for the first signal are Wi-Fi signals).

The processor of the electronic device 200 may measure a propagation delay to obtain a distance between the electronic device 200 and the mobile terminal 100.

Specifically, the processor of the electronic device 200 is based on the round-trip delay time and the time required for the mobile terminal 100 to confirm receipt of the first signal. Propagation delay between the electronic device 200 and the mobile terminal 100. delay) can be measured. In addition, the processor of the electronic device 200 may obtain a distance between the electronic device 200 and the mobile terminal 100 using the propagation delay and the speed of the first signal.

Meanwhile, the first signal and the first may be any one of signals used by the wireless communication unit 273 for wireless communication. For example, the first signal is Bluetooth (Bluetooth™), Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, Near Field Communication (NFC), Wi-Fi ( Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) signals.

Next, the step of transmitting the beam forming signal in a plurality of directions (S230) and the step of obtaining the direction of the mobile terminal using the response to the beam forming signal based on RSSI (S240) will be described with reference to FIG. 4.

The processor of the electronic device 200 may transmit a beam forming signal in a plurality of directions, and obtain a direction of the mobile terminal 100 by using a response signal for a beam forming signal based on RSSI.

RSSI (Received signal strength indication) means the received signal strength.

Therefore, in this specification, obtaining the direction of the mobile terminal based on the received signal strength indication (RSSI) means that the mobile terminal 100 receives the signal transmitted from the electronic device 200 and the signal received from the mobile terminal 100. It may mean that the direction of the mobile terminal 100 is obtained by using the received signal strength of.

Specifically, the processor of the electronic device 200 may control the wireless communication unit to transmit

beamforming signals

410, 420, 430, 440, 450, 460, 470, 480 in a plurality of directions.

For example, the beamforming signal includes a first-first beamforming signal 410 in a first direction, a first-2 beamforming signal 420 in a second direction, and a first-3 beamforming signal 430 in a third direction. ), 1-4th beamforming signal 440 in the 4th direction, 1-5th beamforming signal 450 in the 5th direction, 1-6th beamforming signal 460 in the 6th direction, 7th direction The 1-7th beamforming signal 470 of the 1-8th beamforming signal 480 in the eighth direction may be included.

In this case, each of the plurality of beamforming signals 410, 420, 430, 440, 450, 460, 470, and 480 may have the same angle with which adjacent beamforming signals are formed.

For example, the angle formed by the first-first beamforming signal 410 in the first direction and the first-2 beamforming signal 420 in the second direction is 45 degrees, and the first-2 beamforming in the second direction. The angle formed by the signal 420 and the first-3 beamforming signal 430 in the third direction is 45 degrees, the first-3 beamforming signal 430 in the third direction and the first-4 in the fourth direction The angle formed by the beamforming signal 440 may be 45 degrees.

Meanwhile, each of the plurality of beamforming signals 410, 420, 430, 440, 450, 460, 470, and 480, each of the plurality of beamforming signals 410, 420, 430, 440, 450, 460, 470, 480 Information may be included.

For example, the 1-1st beamforming signal 410 is the 1st-1 identification information unique to the 1st-1st beamforming signal, and the 1st-2 beamforming signal 420 is the 1st-2nd beamforming signal unique. It may include the identification information of 1-2.

Meanwhile, the processor of the mobile terminal 100 may receive a beamforming signal through a wireless communication unit. In this case, the processor of the mobile terminal 100 may acquire identification information included in the received beamforming signal. Also, the processor of the mobile terminal 100 may determine the received signal strength of the received beamforming signal.

Meanwhile, the processor of the mobile terminal 100 receiving the beamforming signal may transmit a response signal to the received beamforming signal to the electronic device 200. Here, the response signal may include received signal strength and identification information of the received beamforming signal.

For example, the mobile terminal 100 has a 1-8 beamforming signal 410, a 1-1 beamforming signal 410, a 1-2 beamforming signal 420, and a 1-3 beamforming signal ( 430).

In this case, the processor of the mobile terminal may transmit a response signal to the 1-8 beamforming signal 480 to the electronic device 200. Here, the response signal to the 1-8 beamforming signal 480 may include identification information of the 1-8 beamforming signal 480 and the received signal strength of the 1-8 beamforming signal 480.

In addition, the processor of the mobile terminal may transmit a response signal to the first-first beamforming signal 410 to the electronic device 200. Here, the response signal to the first-first beamforming signal 410 may include identification information of the first-first beamforming signal 410 and the received signal strength of the first-first beamforming signal 410.

In addition, the processor of the mobile terminal may transmit a response signal to the 1-2-2 beamforming signal 420 to the electronic device 200. Here, the response signal to the 1-2-2 beamforming signal 420 may include identification information of the 1-2 beamforming signal 420 and the received signal strength of the 1-2 beamforming signal 420.

In addition, the processor of the mobile terminal may transmit a response signal to the 1-3rd beamforming signal 430 to the electronic device 200. Here, the response signal to the 1-3 beamforming signal 430 may include identification information of the 1-3 beamforming signal 420 and the received signal strength of the 1-3 beamforming signal 430.

Meanwhile, the processor of the electronic device 200 may acquire the direction of the mobile terminal 100 using a response signal to the beamforming signal.

Specifically, the processor of the electronic device 200 may determine that the mobile terminal exists between two directions in which the received signal strength of the beam forming signal is greater among the plurality of directions in which the beam forcing signal is transmitted.

For example, the received signal strength of the 1-8th beamforming signal 410 in the 8th direction is 3dBm, the received signal strength of the 1-1st beamforming signal 410 in the first direction is 8dBm, the second When the received signal strength of the 1-2 beamforming signal 420 is 10 dBm, and the received signal strength of the 1-3 beamforming signal 430 in the third direction is 4 dBm, the processor of the electronic device 200 receives the beamforming signal. It may be determined that the mobile terminal is present between the first direction and the second direction in which the received signal strength is large.

On the other hand, the processor of the electronic device 200 may determine the direction of the mobile terminal based on the received signal strength in two directions where the received signal strength is large.

Specifically, when the received signal strengths in the first direction and the second direction among the plurality of directions in which the beamforming signal is transmitted are large, the processor of the electronic device 200 receives the received signal strength in the first direction and the received signal strength in the second direction It is possible to determine the direction of the mobile terminal corresponding to the ratio.

For example, it is assumed that the received signal strength of the first-first beamforming signal 410 in the first direction is 9 dBm, and the received signal strength of the first-2 beamforming signal 420 in the second direction is 6 dBm. It is also assumed that the first direction is 0 degrees and the second direction is 45 degrees.

In this case, the ratio of the received signal strength in the first direction and the received signal strength in the second direction is 9:6.

In this case, the processor of the electronic device 200 may determine that the mobile terminal is located in the 18 degree direction. That is, the ratio between the angle formed by the second direction and the 18 degree direction and the angle formed by the first direction and the 18 degree direction is 9:6 days, which is the same as the ratio of the received signal strength in the first direction and the received signal strength in the second direction. Can.

In this way, the processor of the electronic device 200 can determine the direction of the mobile terminal.

Meanwhile, the processor of the electronic device 200 may determine the number of a plurality of directions for transmitting the beam forming signal based on the distance from the mobile terminal.

Specifically, when the distance from the mobile terminal is the first distance, the processor of the electronic device 200 may transmit the first number of beamforming signals in the first number direction. In this case, each of the first number of beamforming signals may have the same angle as an adjacent beamforming signal.

In addition, if the distance from the mobile terminal is a second distance that is farther than the first distance, the processor of the electronic device 200 may transmit the second number of beamforming signals in a direction of a second number that is greater than the first number. In this case, each of the second number of beamforming signals may have the same angle as an adjacent beamforming signal.

For example, assume that the distance between the electronic device 200 and the mobile terminal 100 is 2m. In this case, the processor of the electronic device 200 may transmit the 1-1 to 1-8 beamforming signals in eight directions. In this case, an angle at which a specific beamforming signal forms with an adjacent beamforming signal may be 45 degrees.

For another example, assume that the distance between the electronic device 200 and the mobile terminal 100 is 4m. In this case, the processor of the electronic device 200 may transmit the 1-1 to 1-12 beamforming signals in 12 directions. In this case, an angle at which a specific beamforming signal forms with an adjacent beamforming signal may be 30 degrees.

That is, in the present invention, since the beamforming signal is transmitted in a plurality of directions to determine the direction of the mobile terminal, the greater the distance between the electronic device 200 and the mobile terminal 100, the greater the error in direction. However, according to the present embodiment, as the distance from the mobile terminal increases, the beamforming signal is transmitted while forming a dense angle, so that the error increases as the distance increases.

The processor of the electronic device may transmit the second beamforming signal between two directions in which the received signal strength of the beamforming signal is large, and obtain a direction of the mobile terminal by using a response signal for the second beamforming signal based on RSSI. .

Specifically, when the received signal strengths of the first direction and the second direction are large among the plurality of directions in which the beamforming signal is transmitted, the processor of the electronic device 200 is second in the tenth direction between the first direction and the second direction. The beamforming signal 510 may be transmitted. In this case, the second beamforming signal 510 may include second identification information unique to the second beamforming signal.

Meanwhile, the processor of the mobile terminal 100 may receive a second beamforming signal through a wireless communication unit. In this case, the processor of the mobile terminal 100 may acquire second identification information included in the received second beamforming signal. Also, the processor of the mobile terminal 100 may determine the received signal strength of the received second beam forming signal.

Meanwhile, the processor of the mobile terminal 100 that has received the second beamforming signal may transmit a response signal to the received second beamforming signal to the electronic device 200. Here, the response signal may include received signal strength and second identification information of the received second beam forming signal.

In this case, the processor of the electronic device 200 may acquire the direction of the mobile terminal 100 using a response signal to the second beamforming signal.

Specifically, the processor of the electronic device 200 is between'two directions having a large received signal strength among the plurality of first beamforming signals' and two directions having a large received signal strength among the ten directions in which the second beamforming signals are transmitted. It can be determined that the mobile terminal is present.

For example, the received signal strength of the 1-8 beamforming signal 410 is 3 dBm, the received signal strength of the 1-1 beamforming signal 410 is 8 dBm, and the received signal of the 1-2 beamforming signal 420 When the intensity is 10 dBm and the received signal strength of the 1-3 beamforming signal 430 is 4 dBm, the processor of the electronic device 200 is provided in a tenth direction between the first direction and the second direction where the received signal strength is large. 2 Beamforming signals can be transmitted.

In addition, it is assumed that the received signal strength of the second beamforming signal is 8.5 dBm.

In this case, the processor of the electronic device, the'first direction (8dBm), the second direction (10dBm)' having a large received signal strength among the plurality of first beamforming signals and the tenth direction in which the second beamforming signal is transmitted (8.5 dBm), it may be determined that the mobile terminal exists between the second direction (10 dBm) and the tenth direction (8.5 dBm), where the received signal strength is large.

In this case, the processor of the electronic device 200 may determine the direction of the mobile terminal based on the received signal strengths in two directions where the received signal strength is large.

Specifically, when the reception strength in the second direction and the tenth direction is large, the processor of the electronic device 200 determines the direction of the mobile terminal corresponding to the ratio of the received signal strength in the second direction and the received signal strength in the tenth direction. Can.

On the other hand, if the received signal strengths of the first direction and the second direction among the plurality of directions in which the beamforming signal is transmitted are large, the processor of the electronic device 200 controls the tenth direction between the first direction and the second direction. It has been described that the 2 beamforming signal 510 is transmitted.

In this case, the tenth direction may be a central direction between the first direction and the second direction.

That is, the processor of the electronic device may transmit the second beamforming signal 510 in a central direction between two directions having a large reception sensitivity among the plurality of first beamforming signals.

For example, when the angle in the first direction is 0 degrees and the angle in the second direction is 45 degrees, the processor of the electronic device may transmit the second beamforming signal 510 in the direction of 22.5 degrees.

As described above, according to the present invention, after predicting that the mobile terminal is located between two directions having high received signal sensitivity, the second beamforming signal is transmitted between the two directions having high received signal sensitivity and the second beamforming signal is used. By measuring the direction, there is an advantage that can more accurately measure the direction of the mobile terminal.

Meanwhile, the processor of the electronic device may determine to transmit the second beamforming signal 510 when the distance from the mobile terminal is greater than the first preset distance (a).

For example, the processor of the electronic device may determine to transmit the second beamforming signal 510 when the distance to the mobile terminal is greater than 1 m.

In addition, when the distance from the mobile terminal is greater than the first preset distance (a), the processor of the electronic device transmits the second beamforming signal 510 between two directions in which the received signal strength is greater among the plurality of first beamforming signals. Can. In addition, the processor of the electronic device may acquire the direction of the mobile terminal by using a response signal to the second beamforming signal 510 based on RSSI.

On the other hand, if the distance from the mobile terminal is greater than the second preset distance (b), which is greater than the first preset distance (a), the processor of the electronic device is'two directions in which the reception sensitivity is high among the plurality of first beamforming signals' and Among the directions in which the second beamforming signal 510 is transmitted, the third beamforming signal 520 may be transmitted between two directions having high reception sensitivity.

For example, the processor of the electronic device may determine to transmit the third beamforming signal 520 when the distance to the mobile terminal is greater than 2 m.

In this case, the processor of the electronic device may acquire the direction of the mobile terminal by using a response signal to the third beamforming signal 520.

In addition, if the distance from the mobile terminal is greater than the third preset distance (c) greater than the second preset distance (b), the processor of the electronic device is in the direction in which the third beamforming signal 520 and the beamforming signal are transmitted. The fourth beamforming signal 530 may be transmitted between directions closest to the third beamforming signal 520.

In addition, the processor of the electronic device may acquire a direction of the mobile terminal by using a response signal to the fourth beamforming signal 530.

In the present invention, since the beamforming signal is transmitted in a plurality of directions to determine the direction of the mobile terminal, the greater the distance between the electronic device 200 and the mobile terminal 100, the greater the error in direction. However, according to the present embodiment, since the distance from the mobile terminal is farther, the beamforming signal is additionally transmitted to measure the direction, so that the error can be prevented from increasing as the distance increases.

Returning to FIG. 2 again, an operation method of the electronic device 200 according to an embodiment of the present invention may include providing a service for a mobile terminal using a distance and a direction (S250 ).

Specifically, the processor of the electronic device may acquire location information of the mobile terminal using a distance and a direction from the mobile terminal. Also, the processor of the electronic device may provide a service for the mobile terminal by using the location information of the mobile terminal.

This will be described with reference to FIGS. 6 to 7.

The processor may establish a connection with the mobile terminal when the mobile terminal is located within a specific area 610 based on the distance to the mobile terminal and the direction of the mobile terminal. Here, the specific area 610 may mean an area within a specific range from the electronic device.

For example, referring to FIG. 6A, a user equipped with the mobile terminal 100 is in a kitchen. In addition, the distance between the mobile terminal 100 and the electronic device 200 is 10 meters away. In this case, the processor of the electronic device may not establish a connection with the mobile terminal. On the other hand, when the mobile terminal is searched by the Bluetooth LE, the processor of the electronic device may output a message, "The connection is established when the electronic device is accessed."

For another example, referring to FIG. 6B, a user equipped with the mobile terminal 100 moves to the front of the electronic device 200, and the distance between the mobile terminal 100 and the electronic device 200 is 3 meters away. to be. In this case, the processor of the electronic device may automatically establish a connection with the mobile terminal.

For another example, a user equipped with the mobile terminal 100 has moved to the side of the electronic device 200, and the distance between the mobile terminal 100 and the electronic device 200 is 3 meters away. In this case, the processor of the electronic device may not establish a connection with the mobile terminal.

Meanwhile, the connection is automatically established may mean that the electronic device 200 and the mobile terminal 100 are connected without additional input in order to provide a service for the mobile terminal 100.

As described above, according to the present invention, even without a separate input for establishing a connection, such as a pin code input, there is an advantage that the connection can be automatically established by detecting the access of the mobile terminal.

Meanwhile, when a connection with the mobile terminal is established, the processor of the electronic device may receive information about the user of the mobile terminal from the mobile terminal.

Specifically, the processor of the electronic device may receive health information (blood pressure, body temperature, etc.) or medical information (hospital medical information, prescription drug information, etc.) of the user of the mobile terminal.

The electronic device 200 may provide a service for the mobile terminal (ie, for a user equipped with the mobile terminal) based on information about the user received from the mobile terminal.

For example, the information about the user may include the user's preference information (eg, preference channel, preference screen brightness, etc.). In this case, the processor of the electronic device 200 may recommend the user's preferred channel or adjust the brightness of the screen.

Meanwhile, the electronic device 200 may communicate with the air conditioner 400.

In this case, the processor of the electronic device 200 may transmit a command to control at least one of the wind strength and direction of the air conditioner based on the distance to the mobile terminal and the direction of the mobile terminal.

Here, the command may include location information of the mobile terminal obtained based on the distance to the mobile terminal and the direction of the mobile terminal.

In another embodiment, the command may include a control command for the wind strength and direction of the air conditioner.

When the location information is received, the air conditioner 400 may control at least one of the wind strength and direction of the air conditioner based on the received location information.

For example, the air conditioner 400 may perform control such as sending strong wind or sending weak wind to the position of the mobile terminal 100 (ie, to the user's location equipped with the mobile terminal).

In another embodiment, when a control command is received, the air conditioner 400 may control at least one of the wind strength and direction of the air conditioner based on the received control command.

Meanwhile, the electronic device 200 may communicate with the directional speaker 300.

In this case, the processor of the electronic device 200 may transmit a command to control at least one of the magnitude and direction of the output sound of the directional speaker based on the distance to the mobile terminal and the direction of the mobile terminal.

In another embodiment, the command may include a control command for the magnitude and direction of the output sound of the directional speaker.

When location information is received, the directional speaker 300 may control at least one of the magnitude and direction of the output sound based on the received location information.

For example, the directional speaker 300 may perform control such as outputting a sound of a user's preferred size to the location of the mobile terminal 100 (ie, to the user's location equipped with the mobile terminal).

In another embodiment, when a control command is received, the directional speaker 300 may control at least one of the magnitude and direction of the output sound of the directional speaker 300 based on the received control command.

Meanwhile, it has been described above that the processor of the electronic device receives information about the user of the mobile terminal from the mobile terminal when the connection with the mobile terminal is established.

In this case, the processor of the electronic device may transmit information about the user to the external device.

In this case, the external device may provide a service for the mobile terminal based on the location information of the mobile terminal and information about the user.

For example, the air conditioner 400 may use the user's health information or medical information to determine that the user is in a cold. In this case, the air conditioner 400 may discharge wind by avoiding the position of the mobile terminal using the location information of the mobile terminal.

In the conventional RSSI-based distance recognition method, errors are largely generated according to surrounding environments, places and obstacles, and movement of a mobile terminal, and the RTT-based location measurement method has a problem that requires at least three devices.

However, since the present invention combines RSSI and RTT to determine the location of the mobile terminal, errors due to surrounding environment, obstacles, and movement of the mobile terminal are minimized, and the electronic device alone can locate the mobile terminal. . In addition, due to these advantages, the present invention can be particularly efficiently used in a house having a complicated structure and many obstacles.

The above-described present invention can be embodied as computer readable codes on a medium on which a program is recorded. The computer-readable medium includes all types of recording devices in which data that can be read by a computer system are stored. Examples of computer-readable media include a hard disk drive (HDD), solid state disk (SSD), silicon disk drive (SDD), ROM, RAM, CD-ROM, magnetic tape, floppy disk, and optical data storage device. There is this. In addition, the computer may include a processor 180 of the terminal.

Claims

A wireless communication unit for transmitting and receiving wireless signals; And

A first signal is transmitted to the outside, a distance from a mobile terminal is obtained using a response signal to the first signal based on RTT, a beamforming signal is transmitted in a plurality of directions, and the beamforming signal is based on RSSI And a processor for obtaining a direction of the mobile terminal using a response signal to and providing a service for the mobile terminal using the distance and the direction.

Electronic devices.
According to claim 1,

The processor,

It is determined that the mobile terminal exists between two directions in which the received signal strength of the beam forming signal is large.

Electronic devices.
According to claim 2,

The processor,

Determining the direction of the mobile terminal based on the received signal strength in the two directions

Electronic devices.
According to claim 2,

The processor,

Transmitting a second beamforming signal between two directions in which the received signal strength of the beamforming signal is large, and obtaining a direction of the mobile terminal by using a response signal for the second beamforming signal based on RSSI

Electronic devices.
The method of claim 4,

The processor,

If the distance is greater than the first preset distance, it is determined that the second beamforming signal is transmitted.

Electronic devices.
The method of claim 4,

The processor,

The second beamforming signal is transmitted in a central direction between two directions in which the reception sensitivity of the beamforming signal is large.

Electronic devices.
The method of claim 5,

If the distance is greater than the second preset distance greater than the first preset distance, the third direction is between two directions in which the reception sensitivity of the beamforming signal is large and two directions in which the second beamforming signal is transmitted, which has greater reception sensitivity. Transmitting a beamforming signal, and obtaining a direction of the mobile terminal by using a response signal to the third beamforming signal

Electronic devices.
According to claim 1,

The processor,

Determining the number of the plurality of directions based on the distance

Electronic devices.
According to claim 1,

The processor,

Establishing a connection with the mobile terminal when the mobile terminal is located within a specific area based on the distance and the direction

Electronic devices.
According to claim 1,

The processor,

Sending a command to control at least one of the wind strength and direction of the air conditioner based on the distance and the direction

Electronic devices.
According to claim 1,

The processor,

Sending a command to control at least one of the magnitude and direction of the output sound of the directional speaker based on the distance and direction

Electronic devices.
Transmitting a first signal to the outside;

Obtaining a distance from a mobile terminal using a response signal for the first signal based on RTT;

Transmitting a beamforming signal in a plurality of directions;

Obtaining a direction of the mobile terminal using a response signal to the beamforming signal based on RSSI; And

And providing a service for the mobile terminal using the distance and the direction.

How the electronic device works.
According to claim 1,

The step of obtaining the direction of the mobile terminal,

And determining that the mobile terminal exists between two directions in which the reception sensitivity of the beam forming signal is large.

How the electronic device works.
The method of claim 13,

The step of obtaining the direction of the mobile terminal,

The method further includes transmitting a second beamforming signal between two directions in which the reception sensitivity of the beamforming signal is large, and obtaining a direction of the mobile terminal using a response signal for the second beamforming signal based on RSSI.

How the electronic device works.
The method of claim 4,

And determining that the second beamforming signal is transmitted when the distance is greater than a first preset distance.

How the electronic device works.