KR101808696B1 - Mobile terminal and method for controlling of thereof - Google Patents

Abstract

A control method for a mobile terminal and a mobile terminal is disclosed. A mobile terminal according to an embodiment receives a cell identifier (CID) and stores it in a database. When the mobile terminal enters a first cell, the first cell identifier information is stored in a cell identifier When the information is matched with the information, the WiFi communication module is automatically turned on to form a communication interface with the access point. When the channel connected to the access point is disconnected, the WiFi communication module can be automatically turned off. Thus, efficient WiFi connection can be realized according to the user environment while reducing unnecessary power consumption.

Description

[0001] MOBILE TERMINAL AND METHOD FOR CONTROLLING OF THEREOF [0002]

The present invention relates to a mobile terminal and a control method for the mobile terminal, and more particularly, to a mobile terminal capable of automatically turning WiFi on and off according to a usage environment of the mobile terminal in a WiFi (Wireless Fidelity) And a control method of the mobile terminal.

BACKGROUND ART [0002] In a variety of mobile terminal fields including mobile terminals in recent years, a great variety of functions can be provided to a user thanks to the breakthrough of software and hardware.

Accordingly, there is a growing need for the development and dissemination of various user interfaces that allow a user to easily and efficiently control mobile terminals providing various complex functions.

The present invention can provide a mobile terminal and a control method of the mobile terminal that can efficiently control the WiFi connection according to the usage environment of the mobile terminal.

The technical objects to be achieved by the present invention are not limited to the technical problems mentioned above. In addition, other technical objects to be achieved by the present invention will become apparent to those skilled in the art from the following description.

A mobile terminal according to an aspect of the present invention includes: a mobile communication module; WiFi module; A database for receiving and storing a cell identifier (CID) of a cell including at least one access point (AP) for providing a Wi-Fi service through the mobile communication module; And when there is identifier information matching the first cell identifier information among the cell identifier information stored in the database, the WiMAX communication module receives the first cell identifier information as it enters the first cell, And forming a communication interface with the at least one access point, and turning off the Wi-Fi communication module when a channel connected to the access point is disconnected.

According to another aspect of the present invention, there is provided a method of controlling a mobile terminal, comprising: receiving a cell identifier (CID) of a cell including at least one access point and storing the cell identifier in a database; Receiving the first cell identifier information as the mobile terminal enters the first cell; Turning on the Wi-Fi communication module if any one of the cell identifier information stored in the database matches the received first cell identifier information; Connecting the Wi-Fi communication module with the access point to form a communication interface; And monitoring the signal strength (RSSI) of the access point and the received cell identifier information every predetermined period.

According to the control method of the mobile terminal and the mobile terminal according to the present invention, overhead and power consumption can be reduced by automatically controlling the connection between the Wi-Fi communication module and the access point.

Further, according to the present invention, when the mobile terminal is in a moving state, by turning off the Wi-Fi communication module, it is possible to efficiently control the Wi-Fi service connection.

1 is an example of a WiFi system for implementing a control method of a mobile terminal according to an embodiment of the present invention.
2 is a block diagram of a mobile terminal 100 according to an embodiment of the present invention.
3 is a flowchart illustrating a method of controlling a mobile terminal according to an exemplary embodiment of the present invention.
4 is an exemplary system configuration diagram of a mobile terminal entering a specific cell according to a method of controlling a mobile terminal according to an embodiment of the present invention, forming a Wi-Fi communication interface by connecting with an access point.
FIG. 5 is a flowchart of an exemplary method of turning on a Wi-Fi communication module using cell identifier information according to an exemplary embodiment of the present invention and connecting to an access point.
6 is a flowchart illustrating an exemplary method of retrying a connection in a state in which a Wi-Fi connection is released according to a method of controlling the mobile terminal according to an exemplary embodiment of the present invention.
7 is an exemplary system configuration diagram for explaining a control method of a mobile terminal according to an embodiment of the present invention.
8 is a flowchart showing an example of controlling the Wi-Fi communication module according to the signal strength of the access point.
9 is a flowchart illustrating an example of controlling a Wi-Fi communication module according to a change in cell identifier information received by the mobile terminal.

The foregoing objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Like reference numerals designate like elements throughout the specification. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Hereinafter, a mobile terminal 100 according to the present invention will be described in detail with reference to the drawings. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role.

The mobile terminal 100 described in this specification includes a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), a navigation device, Internet Device) may be included.

1 is an example of a WiFi system for implementing a control method of a mobile terminal according to an embodiment of the present invention.

In the present embodiment, it is assumed that the mobile terminal 100 enters the first cell region C1 and then moves toward the second cell region C2.

In the following description, a first AP (Access Point) AP1 and a second AP (AP2) are included in different cell areas, and the first AP and the second AP are respectively connected to a wired network , And can form a Wi-Fi communication interface with a mobile terminal entering each cell.

When the mobile terminal 100 enters the first cell C1, it can connect to the first AP and perform communication with a predetermined network through WiFi communication. When the mobile terminal 100 moves from the first cell C1 to the second cell C2, the mobile terminal 100 moves to the area where the service area of the first cell C1 and the service area of the second cell C2 intersect You can enter.

In this case, the mobile terminal 100 may form a Wi-Fi communication interface with at least one of the first AP (AP1) and the second AP (AP2). Wi-Fi refers to a wireless communication protocol in which a user accesses the Internet, an intranet, or the like using an access point around the access point. Wi-Fi generally receives an IP through such an access point, and then performs communication.

The mobile terminal 100 may be connected to either AP1 or AP2 by referring to a WiFi connection record stored in an internal database for recording WiFi connection information. The Wi-Fi connection record may include information on the number of connections with a specific AP, the time after which the Wi-Fi is used, and the signal strength (RSSI).

When the mobile terminal 100 moves out of the intersection area and enters the second cell area C2, the mobile terminal 100 can disconnect from the AP1 and form a Wi-Fi communication interface with the AP2.

When the mobile terminal 100 moves out of the second cell C2 area, it does not belong to any cell area or belongs to another cell area, but turns off the WiFi communication module when no connectable AP exists.

The on-off of the Wi-Fi communication module may mean that power is supplied to the Wi-Fi communication module through the power supply unit of the mobile terminal 100 to activate or deactivate the Wi-Fi function.

2 is a block diagram of a mobile terminal 100 according to an embodiment of the present invention.

The mobile terminal 100 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 unit 160, A controller 170, a controller 180, a power supply 190, and the like. The components shown in FIG. 2 are not essential, so that the mobile terminal 100 having more or fewer components may be implemented.

Hereinafter, the components will be described in order.

The wireless communication unit 110 may include one or more modules for enabling wireless communication between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and the network in which the mobile terminal 100 is located. For example, the wireless communication unit 110 includes a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short distance communication module 114, a location information module 115, and a WiFi communication module 116 ), And the like.

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).

The broadcast receiving module 111 receives broadcasting signals using various broadcasting systems. In particular, the broadcasting receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S) Only Digital Broadcast-Handheld (DVB-H), Integrated Services Digital Broadcast-Terrestrial (ISDB-T), and the like. Of course, the broadcast receiving module 111 may be adapted to other broadcasting systems that provide broadcast signals 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 unit 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 the wireless Internet module 113 can be embedded in the mobile terminal 100 or externally. 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 the short distance communication technology.

The location information module 115 is a module for confirming or obtaining the location of the mobile terminal 100. The location information module 115 may obtain location information using a global navigation satellite system (GNSS). Here, the Global Positioning System (GNSS) is a term used to describe the radionavigation satellite systems in which certain types of radionavigation receivers orbiting the Earth are transmitting reference signals that can determine their position near the surface or ground surface . The Global Positioning System (GNSS) includes Global Positioning System (GPS) in the United States, Galileo in Europe, GLONASS (Global Orbiting Navigational Satelite System) in Russia, COMPASS in China and Japan QZSS (Quasi-Zenith Satellite System), which is operated by the Ministry of Land, Infrastructure and Transport.

As a representative example of the GNSS, the location information module 115 may be a Global Position System (GPS) module. The GPS module calculates information on a distance (distance) from three or more satellites to a point (object), information on a time when the distance information is measured, and then applies a trigonometric method to the calculated distance information, Dimensional position information according to latitude, longitude, and altitude with respect to a point (object) in the three-dimensional space. Further, a method of calculating position and time information using three satellites and correcting the error of the calculated position and time information using another satellite is also used. The GPS module continuously calculates the current position in real time, and calculates velocity information using the current position.

The WiFi communication module 116 performs a wireless communication function of the mobile terminal 100 in the Wi-Fi system. The Wi-Fi communication module 1160 may include a Wi-Fi communication unit (not shown) and a Wi-Fi control unit (not shown).

The Wi-Fi communication unit communicates with a specific network by accessing an access point (AP) in a Wi-Fi service area. In this case, the Wi-Fi communication unit may include an RF transmitter for increasing and amplifying the frequency of the transmitted signal, an RF receiver for low-noise amplifying the received signal and down-converting the frequency.

The Wi-Fi control unit performs a function of controlling the Wi-Fi communication unit.

The Wi-Fi control unit can search for other APs accessible through the Wi-Fi communication unit when disconnecting from the AP that is currently connected to by leaving the Wi-Fi service area according to the embodiment of the present invention. The Wi-Fi controller may attempt to connect to the discovered AP if it finds a connectable AP according to an embodiment of the present invention.

Or the Wi-Fi control unit can turn off the power of the Wi-Fi communication unit when it can not find an access point AP according to the embodiment of the present invention.

When the mobile terminal enters a predetermined WiFi service area (i.e., a specific cell area), the WiFi controller receives cell information on the cell, and the received cell information is stored in the database 165 If so, it can attempt to connect to any one of the at least one APs included in the cell.

Referring to FIG. 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 unit 160 or may be transmitted to the outside through the wireless communication unit 110. [ The camera 121 may be equipped with two or more cameras according to the configuration of the terminal.

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 may sense the position of the mobile terminal 100 such as the open / close state of the mobile terminal 100, the position of the mobile terminal 100, the presence of the user, the orientation of the mobile terminal 100, And generates a sensing signal for controlling the operation of the mobile terminal 100. For example, when the mobile terminal 100 is in the form of a slide phone, it is possible to sense whether the slide phone is opened or closed. In addition, it may be responsible for a sensing function related to 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 may include a display unit 151, an audio output module 152, an alarm unit 153, and a haptic module 154, for example, for generating output related to visual, auditory, have.

The display unit 151 displays and outputs information processed by the mobile terminal 100. For example, when the mobile terminal 100 is in the call mode, a UI (User Interface) or a GUI (Graphic User Interface) associated with a call is displayed. When the mobile terminal 100 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, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, a three-dimensional display 3D display).

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

There may be two or more display units 151 according to the embodiment of the mobile terminal 100. [ For example, in the mobile terminal 100, a plurality of display portions may be spaced apart from one another or may be disposed integrally with each other, or may be disposed on different surfaces.

The display unit 151 is connected to a display unit 151 and a sensor for sensing a touch operation (hereinafter, referred to as 'touch sensor') having 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.

Referring to FIG. 2, proximity sensors 141 may be disposed in an inner region of the mobile terminal 100 or in the vicinity of the touch screen, which is surrounded by the touch screen. The proximity sensor 141 refers to a sensor that detects the presence of an object approaching a predetermined detection surface or an object existing in the vicinity of the detection surface without mechanical contact using an electromagnetic force or an infrared ray. 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 type photoelectric sensor, a mirror reflection type photoelectric sensor, a high frequency oscillation type 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 unit 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 outputs an acoustic signal related to a function (e.g., a call signal reception sound, a message reception sound, etc.) performed in the mobile terminal 100. The audio output module 152 may include a receiver, a speaker, a buzzer, and the like. Also, the sound output module 152 may output sound through the earphone jack 116. The user can connect the earphone to the earphone jack 116 to hear the sound output.

The alarm unit 153 outputs a signal for notifying the occurrence of an event of the mobile terminal 100. Examples of events generated in the mobile terminal 100 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 also be output through the display unit 151 or the audio output module 152.

The haptic module 154 generates various tactile effects that the user can feel. A typical example of the haptic effect generated by the haptic module 154 is vibration. The intensity and pattern of 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 be configured to perform various functions such as an effect of stimulation by a pin arrangement vertically moving with respect to a contact skin surface, an effect of stimulation by air spraying force or suction force through a jet opening or a suction opening, A variety of tactile effects such as an effect of stimulation through contact of an electrode, an effect of stimulation by an electrostatic force, and an effect of reproducing a cold sensation using a heat absorbing 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 feel the tactile effect through the muscles of the user's finger or arm. The haptic module 154 may include two or more haptic modules 154 according to the configuration of the portable terminal 100.

The memory unit 160 may store a program for the operation of the controller 180 and temporarily store input / output data (e.g., a phone book, a message, a still image, a moving picture, etc.). The memory unit 160 may store data related to vibration and sound of various patterns outputted when a touch is input on the touch screen.

Meanwhile, the database 165 may store information related to the Wi-Fi connection (for example, a CID for a specific cell) separately from the memory unit 160.

When forming a WiFi communication interface with an AP existing in a specific cell area through the WiFi communication module 116 according to the embodiment of the present invention, ), Information about the AP (AP Information), the number of connections with the AP, WiFi average usage time, neighbor cell information, and the like.

The mobile terminal 100 can efficiently receive the WiFi service by using various WiFi connection information stored in the database 165. [

The memory unit 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) (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. The mobile terminal 100 may operate in association with a web storage that performs a storage function of the memory unit 160 on the Internet.

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

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

When the mobile terminal 100 is connected to an external cradle, the interface unit may be a path through which power from the cradle is supplied to the mobile terminal 100, or various command signals input by the user from the cradle may be transmitted to the mobile terminal 100. [ (Not shown). The various command signals or the power source inputted from the cradle may be operated as a signal for recognizing that the mobile terminal 100 is correctly mounted on the cradle.

The control unit 180 typically controls the overall operation of the mobile terminal 100. 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 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 processors, controllers, micro-controllers, microprocessors, and electrical units for performing functions. In some cases, And may be implemented by the control unit 180.

According to a software implementation, embodiments such as procedures or functions may be implemented with separate software modules that perform at least one function or operation. The software code may be implemented by a software application written in a suitable programming language. Also, the software codes may be stored in the memory unit 160 and executed by the control unit 180. [

FIG. 3 is a flowchart illustrating a method of controlling a mobile terminal according to an exemplary embodiment of the present invention. FIG. 4 illustrates an exemplary system configuration in which a mobile terminal enters a specific cell and connects to an access point to form a WiFi communication interface The above embodiments may be executed under the control of the control unit 180 of the mobile terminal 100. [

Hereinafter, with reference to FIG. 3 and FIG. 4, an operation in which a mobile terminal is connected to or disconnected from an access point included in a specific cell will be described.

Initially, the cell identifier information (CID) may be stored in the DB 165 (S110).

In step S110, the mobile terminal 100 may attempt to connect to a specific access point in order to receive a Wi-Fi service. In this case, when the mobile terminal 100 is first connected to the specific access point, information of a cell including the access point, for example, a cell identifier (CID) and information of the access point May be stored in the database 165.

Also, the mobile terminal 100 can be registered in the access point. The operation of registering the mobile terminal 100 with the access point is possible, for example, by performing a predetermined authentication process with respect to the access point.

When the mobile terminal 100 enters the cell again in the state where predetermined cell identifier information (CID) is initially stored in the DB 165, the cell identifier information is received and the DB 165 is searched and matched The WiFi communication module 116 is automatically turned on to connect with the access point.

Then, the first cell C1 may be received and the first CID may be received (S120).

In step S120, when the mobile terminal 100 enters the first cell C1 in a state where specific cell identifier information is stored in the DB in step S110, the mobile terminal 100 receives the identifier information (first CID) of the first cell do.

The control unit 180 can search whether the received first CID exists in the DB 165. [ If the first CID does not exist in the DB 165 (S130: NO), the WiFi communication module 116 can be automatically turned off (S150). If the first CID does not exist on the DB 165, it is possible to prevent power consumption from being unnecessarily increased by continuously supplying power to the Wi-Fi communication module 166.

Meanwhile, if the first CID exists in the DB 165, the controller 180 may determine whether the mobile terminal is in a moving state (S140). As a result of the determination, if the mobile terminal 100 is in a moving state, the power of the Wi-Fi communication module 116 may be automatically turned off (S150).

Here, the moving state may mean a fast moving state. That is, when the mobile terminal 100 moves at a speed higher than a predetermined threshold speed and leaves the service area of the first cell C1, the controller 180 may turn off the Wi-Fi communication module 116. [

For example, if the mobile terminal 100 exists in the subway and a predetermined access point exists in the subway, the WiFi communication module 116 need not be turned off even if the mobile terminal 100 moves And the access point is located outside the subway car at regular intervals, the mobile terminal 100 repeatedly enters and leaves the service area of each access point according to the movement of the subway. In this case, a smooth WiFi service can not be provided due to the repetition of the entry and exit, and unnecessary power consumption is increased due to the continuous WiFi connection attempt. Accordingly, when the mobile terminal 100 moves at a predetermined speed or more, the power of the Wi-Fi communication module 116 can be automatically turned off.

On the other hand, whether the mobile terminal 100 moves at a predetermined speed or more can be detected by detecting the signal strength (RSSI) value of the currently connected access point. That is, the controller 180 may determine that the mobile terminal 100 is moving at a high speed when the variation width of the RSSI value exceeds a predetermined threshold value for a specific time.

If the mobile terminal 100 is not in the moving state, the controller 180 controls the connection between the Wi-Fi communication module 116 and the access point according to a predetermined event generated between the mobile terminal 100 and the access point. (S200), and on / off of the WiFi communication module 1160 can be automatically controlled (S300).

Hereinafter, a process in which the mobile terminal 100 is connected to or disconnected from a specific access point in the same cell will be described with reference to FIGS. 5 and 6. FIG.

5 is a flowchart of an exemplary method of automatically turning on a Wi-Fi communication module using cell identifier information according to a control method of a mobile terminal according to an embodiment of the present invention, and connecting the Wi-Fi communication module with an access point.

4 and 5, in configuring the Wi-Fi communication interface with the AP 1 of the first cell C1 in a state where the mobile terminal 100 does not leave the service area of the first cell C1, Conditions can be referenced. For example, the conditions may include at least one of cell identifier information of the first cell, information of AP1, and location information.

First, when the mobile terminal 100 enters the first cell C1, the control unit 180 may receive the first cell identifier information (first CID) (S211).

Here, the cell identifier information (CID) is identification information for identifying the service network of the corresponding mobile communication carrier as the system (or carrier) identification number. For example, in the mobile communication system, each base station has a unique cell ID, and can transmit the cell ID held by the base station to which the mobile terminal belongs to the mobile terminal 100.

The control unit 180 can control the on / off operation of the Wi-Fi communication module 116 using the cell identifier information (CID).

In addition, the control unit 180 may receive the AP information together with the first CID (S211).

The AP information may include at least one of a MAC address, an identifier (SSID), and a signal strength (RSSI) of the AP.

The control unit 180 can control the on / off operation of the Wi-Fi communication module 116 using the AP information together with the cell identifier information (CID).

For example, the control unit 180 may attempt to connect to any one of the at least one APs included in the first cell. In this case, the mobile terminal 100 may attempt to establish a Wi-Fi connection with all the APs and finally determine which AP to connect based on the result of the attempt. However, in this case, The amount of power increases. Accordingly, when AP information is received from at least one AP included in the first cell, the connection with the AP having a high priority is performed considering the AP information stored in the database 165 and the received AP It is possible to reduce the power consumed by the AP connection attempt.

If the position information module 115 (e.g., GPS module) is on, the controller 180 receives the location information of the AP (S214) and stores the first CID, AP information, By storing them together in the database, the database 165 related to the WiFi usage record can be updated (S215).

Meanwhile, the database 165 of the mobile terminal 100 may further include information on the number of times the Wi-Fi communication module 116 is connected to the AP, and the average usage time, in addition to the CID information and the AP information. In addition, the database 165 may include not only the CID of the cell to which the mobile terminal 100 belongs but also the CID information of the neighbor cell. Accordingly, the control unit 180 may assign priorities to APs according to the number of connections and the average usage time of the specific APs. In addition, when a plurality of APs exist, the controller 180 may attempt Wi-Fi connection with the AP having a higher priority.

In the above, the process of updating the database 165 when the mobile terminal 100 is connected to a predetermined AP has been described. Hereinafter, the operation of the mobile terminal 100 when the currently connected WiFi is disconnected will be described.

FIG. 6 is a flowchart illustrating an exemplary method of retrying a connection in a state in which a Wi-Fi connection is released according to a method of controlling a mobile terminal according to an exemplary embodiment of the present invention.

4 and 6, even if the mobile terminal 100 does not leave the cell to which the mobile terminal 100 belongs, the connection with the AP may be canceled. In such a case, the controller 180 firstly transmits the WiFi communication module 116 (S222).

Then, the WiFi communication module 116 is turned on after a predetermined time, and the connection with the previously connected AP can be retried (S224). However, the control unit 180 can perform the AP connection retry only when the mobile terminal 100 belongs to the same cell area (S225).

Accordingly, when the AP connection is released within the same cell area, the mobile terminal 100 automatically attempts to reconnect after the predetermined period of time elapses after automatically turning off the power of the WiFi communication module 116, If the cell leaves the cell, the connection retry can be stopped.

On the other hand, the control unit 180 can update information on the number of connection retry times, time, and the like according to the connection retry with the AP to the database 165.

It has been described above that when the mobile terminal is connected to the AP, the accuracy can be improved by recording the cell identification information (CID), the AP information, and the location information in the database 165, And the connection is released, the process of reconnection of the AP is examined.

Hereinafter, an embodiment of controlling the on / off of the Wi-Fi communication module by considering the signal strength (RSSI) and the CID change will be described with reference to FIGS.

FIG. 7 is an exemplary system configuration diagram for explaining a control method of a mobile terminal according to an embodiment of the present invention, and FIG. 8 shows an example of controlling a Wi-Fi communication module according to signal strength of an access point And FIG. 9 is a flowchart illustrating an example of controlling the WiFi communication module as the cell identifier information received by the mobile terminal changes.

8 to 9 will be described with reference to FIG.

7 and 8, the mobile terminals M2 and M3 belong to the area of the first cell C1, and one of the at least one APs included in the first cell C1 It is possible to form a Wi-Fi communication interface with AP1. The mobile terminals M2 and M3 do not leave the area of the first cell C1 but the connection with the AP1 may be disconnected or the connection strength (signal strength RSSI) may be very weak (S311).

In this case, the control unit 180 may automatically turn off the Wi-Fi communication module 116 (S311).

That is, when the Wi-Fi communication module 116 of the mobile terminal M2 is disconnected from the AP1 and there is no AP capable of connecting with the mobile terminal 100 in the neighboring cell C3, in order to reduce unnecessary power consumption, The wireless communication module 180 may automatically turn off the WiFi communication module 116 (S312).

On the other hand, although the connection of the mobile terminal M3 with the AP1 is not completely canceled, the signal strength RSSI is very weak and the WiFi service can not be smoothly provided. In this case, the control unit 180 can automatically turn off the Wi-Fi communication module 180 (S312).

The control unit 180 may store the RSSI value at which the Wi-Fi communication module 116 is turned off and update the database 165 (S313).

That is, a minimum critical signal strength (RSSI) for performing a Wi-Fi service can be defined in advance, and the predefined critical signal strength (RSSI) can be expressed by RSSI Egde. Thereafter, when the RSSI value of the connected AP corresponds to the predefined threshold signal strength (RSSI Egde), the controller 180 may automatically turn off the Wi-Fi communication module 116. [

9 is a flowchart illustrating an example of controlling a Wi-Fi communication module according to a change in cell identifier information received by the mobile terminal.

Referring to FIGS. 7 and 9, the mobile terminal M1 forms a Wi-Fi communication interface with the AP1 in the first cell C1 region, and the connection degree of the communication channel with the AP1 is very high It can be strong.

In this state, when the position of the mobile terminal M1 moves from the first cell C1 to the second cell C2 region, the mobile terminal 100 receives the cell identifier information of the second cell C2 can do.

The control unit 180 can determine whether the received cell identifier information (CID) has been changed (S401). For example, the first CID is received and stored in the database 165 while entering the first cell C1 at the first time, the second cell C2 is entered at the second time, When receiving the second CID different from the CID, the controller 180 may determine that the cell identifier information (CID) is changed (S402).

When there is a changed cell identifier information (CID) in the database 165 even if the cell identifier information (CID) is changed, WiFi communication is performed to attempt WiFi connection with at least one AP included in the changed cell The module 116 can be automatically turned on (S403).

After the power is applied to the Wi-Fi communication module 116, the controller 180 may try to connect the Wi-Fi communication module 116 to the predetermined AP.

The control unit 180 may start the first timer (S404). The first timer may set a monitoring time for monitoring whether Wi-Fi is connected or not, and the number of times of monitoring for monitoring during the monitoring time may be set in advance.

After monitoring through the first timer, it is determined whether the preset timer time is completed (S405), and whether the Wi-Fi communication module 116 is connected to a specific AP during the timer time can be monitored (S406 ).

If the monitoring result indicates that the WiFi communication module 116 can not be connected to any AP in step S406, the controller 180 may automatically turn off the WiFi communication module 116 in step S408.

If the Wi-Fi connection is not established even after repeating the AP connection monitoring by the first timer, the monitoring time may be changed and the monitoring may be performed again (S409).

The control unit 180 sets a period for performing monitoring for a longer time than the first timer time (S410), and may start a second timer for AP connection monitoring (S411).

The monitoring time of the second timer is preferably set to be longer than the monitoring time of the first timer. That is, the first monitoring time and the second monitoring time can be set differently. For example, the primary monitoring time can be set to 1 minute, and the secondary monitoring time can be set to 3 minutes.

The control unit 180 can repeat the monitoring by the first timer by automatically turning on the Wi-Fi communication module 116 when the timer time for the secondary monitoring is completed (S412).

On the other hand, in a state where the mobile terminal M1 located in the first cell C1 is connected to the AP1, the signal strength RSSI of the AP1 may suddenly decrease. That is, when the mobile terminal M1 moves to the second cell C2 at a very high speed, the controller 180 not only changes the cell identifier information (CID), but also changes the signal strength (RSSI) It is possible to detect that the cell where the mobile station M1 is located is changed.

The controller 180 automatically turns off the Wi-Fi communication module 116 when the Wi-Fi service provided through the AP 1 is unstable due to the change of the signal strength RSSI of the AP 1, Information in the database 165 can be updated.

As described above, according to the control method of the mobile terminal according to the embodiment of the present invention, by automatically controlling the Wi-Fi connection in consideration of the current environment such as the current location and the current state of the mobile terminal, Wireless Internet service can be provided.

The control method of the mobile terminal according to the present invention can be executed through software. When executed in software, the constituent means of the present invention are code segments that perform the necessary tasks. The program or code segments may be stored in a processor readable medium or transmitted by a computer data signal coupled with a carrier wave in a transmission medium or a communication network.

A computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer system is stored. Examples of the computer-readable recording device include a ROM, a RAM, a CD-ROM, a DVD 占 ROM, a DVD-RAM, a magnetic tape, a floppy disk, a hard disk, The computer-readable recording medium may also be distributed to networked computer devices so that computer readable code can be stored and executed in a distributed manner.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. The present invention is not limited to the drawings. In addition, the embodiments described in this document can be applied to not only the present invention, but also all or some of the embodiments may be selectively combined so that various modifications can be made.

100: mobile terminal 116: WiFi communication module
165: Database 180: Control

Claims (11)

Mobile communication module;
WiFi module;
A database for receiving and storing a cell identifier (CID) of a cell including at least one access point (AP) for providing a Wi-Fi service through the mobile communication module; And
The mobile terminal receives the first cell identifier information as it enters the first cell and turns on the WiFi communication module when there is identifier information matching the first cell identifier information among the cell identifier information stored in the database, And a controller configured to form a communication interface with the at least one access point and to turn off the Wi-Fi communication module when a channel connected to the access point is disconnected,
Wherein,
Periodically monitors the signal strength (RSSI) of the access point and the cell identifier information received through the mobile communication module, and controls on / off of the WiFi communication module in consideration of at least one of the signal strength and the cell identifier information And turns off the WiFi communication module when the amount of change of the signal strength (RSSI) exceeds a predetermined threshold or the cell identifier information is changed. The method according to claim 1,
Wherein,
Further comprising information (AP Information) of the access point,
Wherein the access point information includes at least one of a MAC address, an identifier (SSID), a signal strength (RSSI) of the access point, a number of connections with the WiFi communication module,
Wherein,
And controls on / off of the Wi-Fi communication module by considering information of the access point. The method according to claim 1,
Wherein the database further includes identifier information of a neighboring cell adjacent to the first cell,
Wherein,
And controls on / off of the Wi-Fi communication module by considering the identifier information of the neighboring cell. The method according to claim 1,
Further comprising a location information module,
Wherein the database further includes position information obtained through the position information module,
Wherein,
And controls on / off of the Wi-Fi communication module in consideration of the location information. delete delete The method according to claim 1,
Wherein,
In a state in which the cell identifier information is not changed,
And turns off the Wi-Fi communication module when the connection between the Wi-Fi communication module and the access point is released or the signal strength has a predetermined boundary value (RSSI Edge). 8. The method of claim 7,
Wherein,
And monitors whether the access point is connected to the access point by repeating a predetermined number of times during predetermined time after the Wi-Fi communication module is turned off. Receiving a cell identifier (CID) of a cell including at least one access point and storing the cell identifier in a database;
Receiving the first cell identifier information as the mobile terminal enters the first cell;
Turning on the Wi-Fi communication module if any one of the cell identifier information stored in the database matches the received first cell identifier information;
Connecting the Wi-Fi communication module with the access point to form a communication interface; And
Monitoring the signal strength (RSSI) of the access point and the received cell identifier information at predetermined intervals;
, ≪ / RTI &
Wherein the monitoring comprises:
And turns off the WiFi communication module when the amount of change of the signal strength (RSSI) exceeds a predetermined threshold or the cell identifier information is changed. delete delete

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