KR20100102834A - Wireless internet access method and mobile terminal using the same - Google Patents

Abstract

PURPOSE: A wireless internet access method and a mobile terminal using the same are provided to automatically detect and authenticate a peripheral wireless Internet AP(Access Point) automatically when the reception sensitivity of a wireless Internet AP is fallen. CONSTITUTION: A user input unit(130) and a sensing unit(140) receive a user input, and a memory(160) stores data received from a wireless communication unit. The sensitivity of a reception signal from a wireless Internet AP is lower than a certain reference value, a control unit(180) searches the wireless Internet AP in a background activation state. The control unit controls the wireless communication unit, the user input, a sensing unit and the memory.

Description

Wireless Internet access method and mobile terminal using same {WIRELESS INTERNET ACCESS METHOD AND MOBILE TERMINAL USING THE SAME}

The present invention relates to a wireless Internet access method and a mobile terminal using the same.

Mobile communication systems are being developed to integrate voice and data communication into data services through Voice over Internet Protocol (VoIP), and to provide various services to users through the integration of wired and wireless communication. have. With the development of such a mobile communication system, a mobile terminal provides a function for performing communication with various communication networks through wired and wireless. For example, the mobile terminal can provide a communication function with various communication networks such as a communication function with a mobile communication network, a communication with a WLAN (also called Wi-Fi), a communication function with a personal computer, and a broadcast receiving function. .

Networks can be classified into paid networks and free networks according to the charging policy. However, when a user moves to a free communication network while accessing a paid communication network through his mobile terminal, handover to the free communication network is not automatically performed. Charging may occur due to the communication service. For example, even if a user connects to a mobile communication network such as CDMA / WCDMA and moves to a wireless Internet area that provides free voice / data communication service while talking on the mobile phone, the mobile terminal does not go through the wireless Internet access point (AP) authentication. Since the handover of the mobile communication network is impossible, charging of the paid service of the mobile communication network may occur.

An object of the present invention is to provide a wireless Internet access method and a mobile terminal using the same, which automatically executes a wireless Internet AP search and authentication when the reception sensitivity of the wireless Internet AP decreases.

As an aspect of the present invention for realizing the above object, the wireless Internet access method according to the present invention detects the sensitivity of the received signal from the wireless Internet AP and the received signal sensitivity is lowered below a predetermined reference value or preset search time Searching for a wireless Internet AP in a background operation state of the mobile terminal when the mobile station arrives at the mobile station; And searching for the wireless Internet AP, and if the wireless Internet AP is found, performing an authentication procedure with the wireless Internet AP found in the background operation state of the mobile terminal and transmitting the authentication result to the mobile communication network and the VoIP server.

In one aspect of the present invention, a mobile terminal according to the present invention includes a wireless communication unit including a mobile communication module connectable to a mobile communication network, and a wireless internet module connectable to a wireless Internet AP; A user input unit and a sensing unit which receives a user input; A memory for storing data received from the wireless communication unit; And a controller for determining a sensitivity of a signal received through the wireless communication unit and controlling the wireless communication unit, the user input unit and the sensing unit, and the memory.

The controller detects the wireless Internet AP in a background operation state when the received signal sensitivity from the wireless Internet AP becomes lower than a predetermined reference value or reaches a preset search time, and performs an authentication procedure with the found wireless Internet AP. Send the result to mobile network and VoIP server.

According to the wireless Internet access method and the mobile terminal using the same according to the present invention, when the reception sensitivity of the wireless Internet AP decreases, it may be caused by automatically searching for and accessing the wireless Internet AP in the vicinity and accessing the mobile communication network in the wireless Internet AP area. Unnecessary billing can be prevented.

The above objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like numbers refer to like elements throughout. In addition, when it is determined that the detailed description of the known function or configuration related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Hereinafter, a mobile terminal according to the present invention will be described in more detail with reference to the accompanying drawings. The suffixes "module" and "unit" for components used in the following description are given or used in consideration of ease of specification, and do not have distinct meanings or roles from each other.

The mobile terminal described herein may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), navigation, and the like.

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

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

Hereinafter, the components will be described in order.

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

The broadcast receiving module 111 receives a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel. The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may mean a server that generates and transmits a broadcast signal and / or broadcast related information or a server that receives a previously generated broadcast signal and / or broadcast related information and transmits the same to a terminal. The broadcast signal may include not only a TV broadcast signal, a radio broadcast signal, and a data broadcast signal, but also a broadcast signal having a data broadcast signal combined with a TV broadcast signal or a radio broadcast signal. The broadcast related information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. The broadcast related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 112.

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

The broadcast receiving module 111 receives broadcast signals using various broadcasting systems, and in particular, digital multimedia broadcasting-terrestrial (DMB-T), digital multimedia broadcasting-satellite (DMB-S), and media forward link only (MediaFLO). ), Digital broadcast signals may be received using digital broadcasting systems such as DVB-H (Digital Video Broadcast-Handheld) and ISDB-T (Integrated Services Digital Broadcast-Terrestrial). 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 a wireless signal with 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 according to transmission and reception of a voice call signal, a video call call signal, or a text / multimedia message.

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. Wireless Internet technologies may include wireless LAN or Wi-Fi (WLAN), wireless broadband (Wibro), world interoperability for microwave access (Wimax), high speed downlink packet access (HSDPA), and the like.

The short range communication module 114 refers to a module for short range communication. As a short range communication technology, Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and the like may be used.

The location information module 115 is a module for confirming or obtaining the location of the mobile terminal. A representative example of the location information module is a GPS (Global Position System) module. According to the current technology, the GPS module 115 calculates information on a distance (distance) from three or more satellites to one point (entity), information on the time when the distance information is measured, , Three-dimensional position information according to latitude, longitude, and altitude of one point (individual) in one hour can be calculated. Furthermore, 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 115 may continuously calculate the current position in real time and use the same to calculate speed information.

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

The image frame processed by the camera 121 may be stored in the memory unit 160 or transmitted to the outside through the wireless communication 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 by a microphone in a call mode, a recording mode, a voice recognition mode, etc., and processes the external sound signal into electrical voice data. The processed voice data may be converted into a form transmittable to the mobile communication base station through the mobile communication module 112 and output in the call mode. The microphone 122 may implement various noise removing algorithms for removing noise generated in the process of receiving an external sound signal.

The user input unit 130 generates input data for the user to control the operation of the terminal. The user input unit 130 may include a key pad dome switch, a touch pad (static pressure / capacitance), a jog wheel, a jog switch, and the like.

The sensing unit 140 detects a current state of the mobile terminal 100 such as an open / closed state of the mobile terminal 100, a location of the mobile terminal 100, presence or absence of a user contact, orientation of the mobile terminal, acceleration / deceleration of the mobile terminal, and the like. To generate 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 may sense whether the slide phone is opened or closed. In addition, it may be responsible for sensing functions related to whether the power supply unit 190 is supplied with power, whether the interface unit 170 is coupled to an external device, and the like. The sensing unit 140 may include a proximity sensor.

The output unit 150 is used to generate an output related to sight, hearing, or tactile sense, and includes a display unit 151, an audio output module 152, an alarm unit 153, and a haptic module 154. Can be.

The display unit 151 displays and outputs information processed by the mobile terminal 100. For example, when the mobile terminal is in a call mode, the mobile terminal displays a user interface (UI) or a graphic user interface (GUI) related to the call. When the mobile terminal 100 is in a video call mode or a photographing mode, the mobile terminal 100 displays photographed and / or received images, a UI, and a GUI.

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 can be configured to be transparent or light transmissive so that they can be seen from the outside. This may be referred to as a transparent display. A representative example of the transparent display includes a transparent LCD. The rear structure of the display unit 151 may also be configured as a light transmissive structure. With this structure, the user can see the object located behind the terminal body through the area occupied by the display unit 151 of the terminal body.

There may be two or more display units 151 according to the implementation form of the 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 one another, and may be disposed on different surfaces, respectively.

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

The touch sensor may be configured to convert a change in pressure applied to a specific portion of the display unit 151 or capacitance generated in a specific portion of the display unit 151 into an electrical input signal. The touch sensor may be configured to detect not only the position and area of the touch but also the pressure at the 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 then transmits the corresponding data to the controller 180. As a result, the controller 180 can know which area of the display unit 151 is touched.

Referring to FIG. 1, a proximity sensor may be disposed in an inner region of a mobile terminal surrounded by a touch screen or near a touch screen. The proximity sensor refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or an object present in the vicinity without using a mechanical contact by using an electromagnetic force or infrared rays. Proximity sensors have a longer life and higher utilization than touch sensors. Examples of the proximity sensor include a transmission photoelectric sensor, a direct reflection photoelectric sensor, a mirror reflection photoelectric sensor, a high frequency oscillation proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. When the touch screen is capacitive, the touch screen is configured to detect the proximity of the pointer by the change of the electric field according to the proximity of the pointer. In this case, the touch screen (touch sensor) may be classified as a proximity sensor.

Hereinafter, for convenience of description, the act of allowing the pointer to be recognized without being in contact with the touch screen so that the pointer is located on the touch screen is referred to as a "proximity touch", and on the touch screen The act of actually touching the pointer is referred to as "contact touch". The position where the proximity touch is performed by the pointer on the touch screen means the position where the pointer is perpendicular to the touch screen when the pointer is in close proximity touch.

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

The sound output module 152 may output audio data received from the wireless communication unit 110 or stored in the memory unit 160 in a call signal reception, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. The sound output module 152 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 sound output module 152 may include a receiver, a speaker, a buzzer, and the like. In addition, 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 occurrence of an event of the mobile terminal 100. Examples of events occurring in the mobile terminal include call signal reception, message reception, key signal input, and touch input. The alarm unit 153 may output a signal for notifying occurrence of an event in a form other than a video signal or an audio signal, for example, vibration. The video signal or the audio signal may also be output through the display unit 151 or the sound output module 152.

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

In addition to vibration, the haptic module 154 may be provided with a stimulus caused by a pin array vertically moving with respect to the contact skin surface, an stimulus caused by a jetting force or an inhalation force of air through an injection or inlet, or a stimulus that strikes the skin surface. Various tactile effects can be generated, such as effects of stimulation through contact of electrodes, effects of stimulation using electrostatic force, and effects of reproducing a sense of warmth and heat using an endothermic or heat generating element.

The haptic module 154 may not only deliver the haptic effect through direct contact, but also implement the haptic effect through the muscle sense of the user's finger or arm. Two or more haptic modules 154 may be provided according to a configuration aspect of the mobile terminal 100.

The memory unit 160 may store a program for the operation of the controller 180 and may temporarily store input / output data (for example, a phone book, a message, a still image, a video, etc.). The memory unit 160 may store data regarding vibration and sound of various patterns output when a touch input on the touch screen is performed.

The memory unit 160 may include 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 (RAM), Static Random Access Memory (SRAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Programmable Read-Only Memory (PROM) Magnetic Memory, Magnetic It may include a storage medium of at least one type of disk, 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 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 that stores various types of information for authenticating the use authority of the mobile terminal 100. The identification module includes a user identification module (UIM), a subscriber identification module (SIM), and a universal user authentication module. (Universal Subscriber Identity Module, USIM) and the like. Devices with identification modules (hereinafter referred to as "identification devices") can be manufactured in a smart card format. Therefore, the identification device may be connected to the terminal 100 through a port.

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

The control unit 180 typically controls the overall operation of the mobile terminal. For example, perform related control and processing for voice calls, data communications, video calls, and the like. The controller 180 may include a multimedia module 181 for playing multimedia. The multimedia module 181 may be implemented in the controller 180 or may be implemented separately from the controller 180.

The controller 180 may perform a pattern recognition process for recognizing a writing input or a drawing input performed on a touch screen as text and an image, respectively.

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

Various embodiments described herein may be implemented 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, embodiments described herein include application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), and the like. It may be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing the functions. It may be implemented by the controller 180.

In a software implementation, embodiments such as procedures or functions may be implemented with separate software modules that allow at least one function or operation to be performed. 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. [

2A is a front perspective view of an example of a mobile terminal (or portable terminal) according to the present invention.

The mobile terminal 100 has a terminal body in the form of a bar. However, the present invention is not limited thereto and may be applied to various structures such as a slide type, a folder type, a swing type, a swivel type, and two or more bodies are coupled to be relatively movable.

The body includes a casing (casing, housing, cover, etc.) that forms an exterior. In this embodiment, the case may be divided into a front case 101 and a rear case 102. Various electronic components are embedded in the space formed between the front case 101 and the rear case 102. At least one intermediate case may be additionally disposed between the front case 101 and the rear case 102. [

The cases may be formed by injecting synthetic resin or may be formed of a metal material, for example, a metal material such as stainless steel (STS) or titanium (Ti).

The display unit 151, the audio output unit 152, the camera 121, the user input units 130/131 and 132, the microphone 122, and the interface 170 may be disposed in the terminal body, mainly the front case 101. have.

The display unit 151 occupies most of the main surface of the front case 101. A sound output unit 151 and a camera 121 are disposed in an area adjacent to one end of both ends of the display unit 151 and a user input unit 131 and a microphone 122 are disposed in an area adjacent to the other end. The user input unit 132, the interface 170, and the like are disposed on the side surfaces of the front case 101 and the rear case 102.

The user input unit 130 is operated to receive a command for controlling the operation of the mobile terminal 100 and may include a plurality of operation units 131 and 132. The manipulation units 131 and 132 may also be collectively referred to as manipulating portions, and may be employed in any manner as long as the user operates the tactile manner with a tactile feeling.

The content input by the first or second manipulation units 131 and 132 may be variously set. For example, the first manipulation unit 131 receives a command such as start, end, scroll, and the like, and the second manipulation unit 132 adjusts the volume of the sound output from the sound output unit 152 or displays 151. Command), such as switching to the touch recognition mode.

FIG. 2B is a rear perspective view of the mobile terminal shown in FIG. 2A.

Referring to FIG. 2B, a camera 121 ′ may be additionally mounted on the rear of the terminal body, that is, the rear case 102. The camera 121 'may have a photographing direction substantially opposite to the camera 121 (see FIG. 2A), and may be a camera having different pixels from the camera 121.

For example, the camera 121 has a low pixel so that the user's face is photographed and transmitted to the counterpart in case of a video call, and the camera 121 'photographs a general subject and does not transmit it immediately. It is desirable to have a high pixel because there are many. The cameras 121 and 121 'may be installed in the terminal body so as to be rotatable or pop-upable.

A flash 123 and a mirror 124 are further disposed adjacent to the camera 121 '. The flash 123 shines light toward the subject when the subject is photographed by the camera 121 '. The mirror 124 allows the user to see his / her own face or the like when photographing (self-photographing) the user using the camera 121 '.

The sound output unit 152 'may be further disposed on the rear surface of the terminal body. The sound output unit 152 ′ may implement a stereo function together with the sound output unit 152 (see FIG. 2A), and may be used to implement a speakerphone mode during a call.

The antenna for receiving a broadcast signal may be additionally disposed on the side of the terminal body. An antenna that forms part of the broadcast receiving module 111 (refer to FIG. 1) may be installed to be pulled out of the terminal body.

The terminal body is equipped with a power supply unit 190 for supplying power to the mobile terminal 100. The power supply unit 190 may be embedded in the terminal body or may be directly detachable from the outside of the terminal body.

The rear case 102 may be further equipped with a touch pad 135 for sensing a touch. Like the display unit 151, the touch pad 135 may also be configured to have a light transmission type. In this case, if the display unit 151 is configured to output visual information from both sides, the visual information may be recognized through the touch pad 135. Information output on both surfaces may be controlled by the touch pad 135. Alternatively, a display may be additionally mounted on the touch pad 135, and a touch screen may be disposed on the rear case 102.

The touch pad 135 operates in association with the display unit 151 of the front case 101. The touch pad 135 may be disposed in parallel to the rear of the display unit 151. The touch pad 135 may have the same or smaller size as the display unit 151.

3 schematically illustrates a wired / wireless communication system of the present invention.

Referring to FIG. 3, the wired / wireless communication system of the present invention includes a mobile terminal 100, a personal computer 10, a wireless Internet access point 11, a mobile communication network 12, and a voice call server. 13, the Internet 20, and a VoIP server 21 are provided.

The mobile terminal 100 may access the Internet 20 through any one of the personal computer 10, the wireless Internet AP 11, and the mobile communication network 12. Since a communication method and a communication protocol for connecting to the Internet 20 are well known technologies, detailed descriptions thereof will be omitted.

The personal computer 10 may be connected to the Internet 20 by wire or wirelessly. The mobile terminal 100 may be connected to the personal computer 10 by wire or wirelessly to access the Internet 20 through the personal computer 10.

The voice call server 13 relays voice and data communication between the mobile terminal 100 and the mobile communication network 12 through the Internet 20, and handovers the mobile terminal 100 in association with the VoIP server 21. To process

The wireless Internet AP 11 may be connected to the Internet 20 by wire or wirelessly. When the wireless Internet AP 11 receives the authentication request from the mobile terminal 100, the wireless Internet AP 11 performs an authentication process according to the profile information received together with the authentication request from the mobile terminal 100. As a result, the wireless Internet AP 11 transmits the terminal IP address for the terminal Internet connection to the mobile terminal 100 and the VoIP server 21 when necessary (as well as a fixed IP address).

The mobile terminal 100 stores the profile of the pre-registered wireless Internet AP 11 in the memory 160. The profile includes information necessary for connection of the wireless Internet AP 11 and the mobile terminal 100, for example, an identification code (or identification name) of the wireless Internet AP 11, an IP address of the wireless Internet AP 11, and a public key (open). key) and the like.

The mobile terminal 100 may access the Internet 20 through the personal computer 10, the wireless Internet AP 11, and the mobile communication network 12 to perform data communication with the VoIP server 21. The mobile terminal 100 stores the registered profile of the wireless Internet AP 11 in the AP register of the memory 160, and receives the terminal IP address received from the wireless Internet AP 11 (the fixed IP address according to the service provider). May be granted) and temporarily stored. The mobile terminal 100 wirelessly accesses the Internet 20 through a terminal IP address provided from the wireless Internet AP 11. A representative example of the wireless Internet communication scheme is WLAN (Wi-Fi). WLAN follows the communication protocol of IEEE 802.11 series. Another example of a wireless Internet communication scheme is WiBRO or WiMAX, as described above. In addition, the mobile terminal 100 may access the Internet 20 through the mobile communication network 12. The mobile communication network 12 may support various data communication, such as an internet connection, in addition to voice communication.

The mobile terminal 100 attempts to connect to the wireless Internet AP 11 accessible by the background search operation before handover according to the control procedure as shown in FIG. 4, and stores the result and transmits the result to the mobile communication network 12. In addition, it transmits to the VoIP 21 via the wireless Internet AP (11) and the Internet (20). The background search operation may automatically search for a neighboring wireless Internet AP 11 at a predetermined time period set in the controller 180 of the mobile terminal before the handover is performed, or adjust the strength of a signal received from the wireless Internet AP 11. This operation is to search for a wireless Internet AP 11 that can be connected to the surrounding area by comparing with a predetermined reference value. In the background search operation, the controller 180 automatically starts to search the wireless Internet AP 11 without informing the user of the search start by the UI / GUI or voice output, and the UI / GUI as shown in FIGS. 5A to 6. May be displayed on the display module 151.

The mobile communication network 12 includes a base station (BS), a mobile switching center (MSC), a visitor location register (VLR), a home location register (HLR), and the like, and includes a global system for mobile telecommunication (GSM) or code division multiple access (CDMA). ) Is connected to the mobile terminal 100 through a wideband CDMA (WCDMA) transmission band and performs handover by determining the movement of the mobile terminal 100 in real time.

The VoIP server 21 performs data communication with the mobile terminal 100 through the Internet 20 and the wireless Internet AP 11. The VoIP server 21 receives the terminal IP of the mobile terminal 100 transmitted from the wireless Internet AP 11 to determine whether the mobile terminal 100 is connected to the wireless Internet AP 11 and the voice call server 13. ), Handover of the mobile terminal 100 is handled between the mobile communication network 12 and the wireless Internet AP area.

When the mobile terminal 100 accesses the Internet 20 through the wireless Internet AP 11, the Internet access service is provided as a free service or almost no charge occurs, but the mobile terminal 100 is connected to the mobile communication network 12. When connecting to the Internet 20 through the data communication fee may be charged based on the billing standards set by the mobile communication service provider. The mobile terminal 100 of the present invention automatically searches for a nearby accessible wireless Internet AP 11 and performs a connection with the wireless Internet AP 11 before performing the handover in the same manner as in FIG. 4. The mobile terminal 100 notifies the VoIP server 21 and the mobile communication network 12 of the result when the mobile terminal 100 connects to the neighboring wireless Internet AP 11 in the background search operation. The VoIP server 21 supports internet access of the mobile terminal 100 through the wireless internet AP 11 according to the terminal IP address of the mobile terminal 100 received from the wireless internet AP 11.

The voice call server 13 and the VoIP server 21 perform handover to the wireless Internet AP area in response to a request from the mobile terminal 100 when the mobile terminal 21 and the wireless Internet AP 11 are connected. The connection between the mobile communication network 12 and the mobile terminal 100 is suspended. When the connection between the mobile terminal 100 and the wireless Internet AP 11 is released, the voice call server 13 and the VoIP server 21 move the mobile terminal 21 to the mobile communication network at the request of the mobile terminal 100. (12).

4 illustrates a connection switching between the mobile terminal 100 and the mobile communication network 12 according to the movement of the mobile terminal 100, and the mobile terminal 100 and the wireless Internet APs 11 (AP # 1 to AP # 3). It is a figure which shows the example of connection switching operation.

In FIG. 4, the area inside the circle is capable of connecting the wireless Internet AP {11 (AP # 1 to AP # 3)} and the mobile terminal 100, and the connection between the mobile communication network 12 and the mobile terminal 100. Possible wireless internet area. Peripheral blanks, including the wireless Internet area in a circle, are mobile communication network areas in which the mobile terminal can be connected to the mobile communication network 12 and not connected to the wireless Internet APs 11 (AP # 1 to AP # 3).

Referring to FIG. 4, the mobile terminal 100 is connected to the first wireless Internet AP {11 (AP # 1)} at a first location P1 belonging to the first wireless Internet AP area to communicate voice and data based on VoIP. The mobile terminal 100 is connected to the Internet 100 with the terminal IP address 111.111.111.111 assigned from the first wireless Internet AP {11 (AP # 1)}.

When the mobile terminal 100 moves to the second position P2 in which the reception sensitivity falls below a predetermined reference value in the first wireless Internet region, the controller 180 of the mobile terminal 100 moves to the first wireless Internet AP {11]. (AP # 1)} detects a decrease in data reception sensitivity and requests handover to voice call server 13 and VoIP server 21, and establishes a connection with first wireless Internet AP {11 (AP # 1)}. Stop it. In the wireless Internet access method according to the embodiment of the present invention, when the mobile terminal 100 is located at the second position P2, the wireless Internet AP {11 (AP # 1) is performed by the background search operation according to the control procedure as shown in FIG. ~ AP # 3)} to begin searching. The wireless Internet access method of FIG. 7 is repeatedly executed at a predetermined time period set in the controller 180 of the mobile terminal 100, or the signal reception sensitivity from the wireless Internet AP {11 (AP # 1 to AP # 3)} is predetermined. It is executed when it is detected above the reference value.

When the mobile terminal 100 moves to the third location P3 belonging to the mobile communication network area, the connection between the first wireless Internet AP {11 (AP # 1)} and the mobile terminal 100 is lost, and the mobile terminal ( 100 detects the wireless Internet APs {11 (AP # 1 to AP # 3)} in the background search operation while performing voice and data communication in the transmission band of the mobile communication network 12 according to the control procedure as shown in FIG. do.

When the mobile terminal 100 moves to the fourth position P4 belonging to the second wireless Internet AP area, the mobile terminal 100 receives the terminal IP address 222.222 received from the second wireless Internet AP {11 (AP # 2)}. Receive .222.222 to recognize the second wireless Internet AP {11 (AP # 2)}. If the second wireless Internet AP area is an unauthenticated unauthenticated public key AP area, the mobile terminal 100 automatically performs an authentication procedure in a background state in which there is no notification to the user, and when the authentication succeeds, the updated terminal IP address 222.222. Transmits .222.222 to the mobile communication network 12 and the VoIP server 21. At this time, the mobile communication network 12 disconnects from the mobile terminal, and the VoIP server 21 supports the VoIP communication of the mobile terminal 100 based on the changed terminal IP address.

When the mobile terminal 100 moves to the fifth position P5 where the second wireless Internet AP region and the third wireless Internet AP region overlap, the controller of the mobile terminal 100 controls the second wireless Internet AP {11 (AP #). 2)}, when the sensitivity of the received signal falls below a predetermined reference value, the search for the wireless Internet AP {11 (AP # 1 to AP # 3)} is restarted by the background search according to the control procedure as shown in FIG. The mobile terminal 100 receives the terminal IP address 233.233.233.233 received from the third wireless Internet AP {11 (AP # 3)}, recognizes the third wireless Internet AP {11 (AP # 3)}, and background. In this state, an authentication procedure with the third wireless Internet AP {11 (AP # 3)} is automatically performed, and upon successful authentication, the changed terminal IP address 233.233.233.233 is transmitted to the mobile communication network 12 and the VoIP server 21. The VoIP server 21 supports VoIP communication of the mobile terminal 100 based on the changed terminal IP address 233.233.233.233 when the mobile terminal 100 moves to the sixth position P6.

5A to 5G illustrate an example of a UI / GUI displayed on a mobile terminal during a background search operation of a wireless Internet AP when the mobile terminal 100 moves as shown in FIG. 4. FIG. 6 shows an example of wireless Internet AP discovery information provided in the UI / GUI of FIG. 5.

The control unit 180 of the mobile terminal 100, when the mobile terminal 100 makes a call based on VoIP at the first location P1 belonging to the first wireless Internet AP area, as shown in FIG. 5A. 111. The UI / GUI including 111 is displayed on the display unit 151. When the mobile terminal 100 moves to the second position P2 belonging to the mobile communication network area, the controller 180 may “talk to the transmission band of the mobile communication network 12 where charging may occur” as shown in FIG. 5B. Displays the UI / GUI including the information on the display unit 151. When the controller 180 displays the UI / GUI as shown in FIG. 5B on the display unit 151, the controller 180 may determine a predetermined value through the sound output module 152, the alarm unit 153, and the haptic module 154 of the output unit 150. Alert sounds, vibration patterns, haptic patterns, or a combination thereof may be output.

The controller 180 of the mobile terminal 100 moves the mobile terminal 100 to a third position P3 belonging to the mobile communication network area so that the mobile terminal 100 communicates voice and data in the transmission band of the mobile communication network 120. When this is performed, as shown in FIG. 5C, the display unit 151 indicates that a general voice or data communication state through the mobile communication network is present.

When the mobile terminal 100 moves to the fourth position P4 belonging to the second wireless Internet AP area and recognizes the second wireless Internet AP {11 (AP # 2)}, the controller 180 controls the second wireless Internet AP. The authentication process with {11 (AP # 2)} is performed in the background state and a background registration log (eg, during regist) showing the authentication process and results of the second wireless Internet AP {11 (AP # 2)} as shown in FIG. 5D. -> Success) may be displayed on the display unit 151. After the successful authentication, the controller 180 transmits the terminal IP address 222. 222. 222. 222 received from the second wireless Internet AP {11 (AP # 2)} to the mobile communication network 12 and the VoIP server 21. The Internet 20 is accessed based on the terminal IP address. The controller 180 displays the UI / GUI including the VoIP communication connection state and the changed terminal IP address 222. 222. 222. 222 on the display unit 151 as shown in FIG. 5E.

When the mobile terminal 100 moves to the fifth position P5 where the second wireless Internet AP region and the third wireless Internet AP region overlap, the controller 180 authenticates with the third wireless Internet AP {11 (AP3)}. The procedure proceeds to the background state, and the third wireless Internet AP {11 (AP # 3)} further searched is displayed on the display unit 151 as shown in FIG. 5F. When the mobile terminal 100 moves to the sixth position P6 belonging to the third wireless internet AP area, the controller 180 receives the terminal IP address received from the third wireless internet AP {11 (AP3)}. 233. 233 is transmitted to the mobile communication network 12 and the VoIP server 21 and connected to the Internet 20 based on the changed terminal IP address. The controller 180 displays the UI / GUI including the VoIP communication connection state and the changed terminal IP address 233.233.233.233 on the display unit 151 as shown in FIG. 5G.

In the UI / GUI displayed on the display unit 151 of the mobile terminal 100 during the discovery process of the wireless Internet AP {11 (AP # 1 to AP # 3)}, as shown in FIG. The presence, the sensitivity of the signal received from the wireless Internet AP, the background registration log, etc. can be displayed. If the profile of the found wireless Internet AP {11 (AP # 1 to AP # 3)} is registered in advance in the mobile terminal 100, that is, stored in the memory 160, it may be displayed as "○". If the profile is not registered in the mobile terminal 100, it may be displayed as "×".

FIG. 7 is a flowchart illustrating a control procedure of a wireless Internet access method according to an embodiment of the present invention, which operates in a background state as described above, and controls the controller 180 or the controller 180 of the mobile terminal 100. It can be implemented in software executed by.

Referring to FIG. 7, when the mobile terminal 100 is in voice and data communication based on VoIP, the reception sensitivity of the wireless Internet AP {11 (AP # 1 to AP # 3)} falls below a predetermined reference value or is set in advance. When the search time is reached, the wireless Internet AP 11 is searched in the background state. (S1 and S2) As a result of the search, the controller 180 of the wireless Internet AP 11 newly discovered than the currently registered wireless Internet AP 11 is found. If the reception sensitivity is lower, the connection state of the current wireless Internet AP 11 is maintained. (S3 and S4) As a result of the search, the controller 180 newly discovers a newly discovered wireless Internet AP (that is, the wireless Internet AP 11). If the reception sensitivity of 11) is higher, the profile of the AP list of the memory 160 is searched to check whether the newly searched wireless Internet AP 11 is the registered wireless Internet AP 11 (S5). The controller 180 searches for a list of APs in the memory 160 and newly discovers the wireless Internet AP 1. When 1) is determined to be a registered wireless Internet AP 11, the authentication procedure with the newly discovered wireless Internet AP 11 is processed in the background state based on the profile stored in the memory 160, and the success or failure thereof is determined by the mobile communication network 12. The control unit 180 compares the profile registered in the AP list of the memory 160 with the profile received from the newly discovered wireless Internet AP 11, and if it is the same, newly transmits it to the VoIP server 12 (S5 and S6). If the detected wireless Internet AP 11 is determined as a previously registered wireless Internet AP, if the profile registered in the AP list does not match the profile received from the newly discovered wireless Internet AP 11, the newly discovered wireless Internet AP 11 May be determined as an unregistered wireless Internet AP.

If the newly discovered wireless Internet AP 11 is determined as the unregistered wireless Internet AP 11 as a result of the AP list search in the memory 160, the controller 180 determines the wireless Internet AP 11 according to the profile received from the newly discovered wireless Internet AP 11. It is determined whether the Internet AP 11 is an open AP that can be authenticated with an open key. (S7) When the newly discovered wireless Internet AP 11 is determined to be an open AP, the controller 180 authenticates with the public key. The procedure is performed and the success is transmitted to the mobile communication network 12 and the VoIP server 12 (S7 and S8).

If the newly discovered wireless Internet AP 11 is determined as the unregistered wireless Internet AP 11 as a result of the AP list search in the memory 160, the controller 180 determines the wireless Internet AP 11 according to the profile received from the newly discovered wireless Internet AP 11. It is determined whether the Internet AP 11 is an AP authenticated with a MAC address (S9). (S9) The controller 180 determines that the newly discovered wireless Internet AP 11 is authenticated with a MAC address. If it is determined, the authentication procedure is performed using the MAC address of the mobile terminal 100 and the success is transmitted to the mobile communication network 12 and the VoIP server 12. (S9 and S10)

If the newly discovered wireless Internet AP 11 is determined as the unregistered wireless Internet AP 11 as a result of the AP list search in the memory 160, the controller 180 determines the wireless Internet AP 11 according to the profile received from the newly discovered wireless Internet AP 11. It is determined whether the Internet AP 11 is an AP authenticated with an identification code (ID) and a password (PW). (S11) The controller 180 determines that the newly discovered wireless Internet AP 11 is authenticated with ID / PW. If it is determined that the AP, the authentication process is performed by the ID / PW input from the user through a touch screen including a user input unit 130 or a touch sensor / proximity sensor and whether the success of the mobile communication network 12 and the VoIP server 12 (S11 and S12).

The above-described wireless Internet access method may be implemented in software (or program) for execution in a computer and stored in a computer-readable recording medium. When the wireless Internet access method according to the embodiment of the present invention is executed in software, the constituent means of the present invention are code segments for performing necessary tasks. The program or code segments may be stored on a processor readable medium or transmitted by a computer data signal coupled with a carrier on a transmission medium or network. Computer-readable recording media include all kinds of recording devices that store data that can be read by a computer system. Examples of the computer-readable recording device include ROM, RAM, CD-ROM, DVD ± ROM, DVD-RAM, magnetic tape, floppy disk, hard disk, optical data storage device, and the like. 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.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings. In addition, the embodiments described in this document may not be limitedly applied, but may be configured by selectively combining all or part of the embodiments so that various modifications may be made.

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

2A is a front perspective view of a mobile terminal according to an embodiment of the present invention.

2B is a rear perspective view of a mobile terminal according to an embodiment of the present invention.

3 is a view schematically showing a wired / wireless communication system of the present invention.

4 is a diagram illustrating connection switching between the mobile terminal 100 and the mobile communication network 12 as the mobile terminal 100 moves, and the mobile terminal 100 and the wireless Internet APs 11 (AP # 1) to 11 (AP #). It is a figure which shows the example of the connection switching operation of 3).

5A to 5G illustrate an example of a user interface displayed on a mobile terminal during a background search operation of a wireless Internet AP.

FIG. 6 is a diagram illustrating an example of wireless Internet connection related information provided in the user interface of FIG. 5.

7 is a flowchart illustrating step by step a control procedure of a wireless Internet access method according to an embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

11: wireless Internet AP 12: mobile communication network

20: Internet 21: VoIP Server

100: mobile terminal 110: wireless communication unit

112: mobile communication module 113: wireless Internet module

114: short-range communication module 150: output unit

151: display unit (touch screen) 152: sound output unit

170: interface unit 180: control unit

Claims (6)

Detecting a sensitivity of a received signal from the wireless Internet AP and searching for the wireless Internet AP in a background operation state of the mobile terminal when the received signal sensitivity is lowered below a predetermined reference value or reaches a preset search time; And When the wireless Internet AP is found, if the wireless Internet AP is found, performing an authentication procedure with the wireless Internet AP found in the background operation state of the mobile terminal, and transmitting the authentication result to the mobile communication network and the VoIP server. How to access wireless internet. The method of claim 1, Performing an authentication procedure with the searched wireless Internet AP and transmitting the authentication result to the mobile communication network and the VoIP server, An identification number (ID) received through at least one of a profile registered in advance in the mobile terminal, a public key received from the searched wireless Internet AP, a MAC address of the mobile terminal, a user input unit and a sensing unit of the mobile terminal; And an authentication procedure for accessing the found wireless Internet IP through a password (PW). The method of claim 1, Displaying at least one of a name of the searched wireless Internet AP, a presence or absence of a profile of the searched wireless Internet AP, a sensitivity of a signal received from the searched wireless Internet AP, and a background registration log on the display of the mobile terminal. Wireless Internet access method comprising a. A wireless communication unit including a mobile communication module connectable to a mobile communication network, and a wireless internet module connectable to a wireless internet AP; A user input unit and a sensing unit which receives a user input; A memory for storing data received from the wireless communication unit; And A control unit for determining a sensitivity of a signal received through the wireless communication unit and controlling the wireless communication unit, the user input unit and the sensing unit, and the memory; The controller detects the wireless Internet AP in a background operation state when the received signal sensitivity from the wireless Internet AP becomes lower than a predetermined reference value or reaches a preset search time, and performs an authentication procedure with the found wireless Internet AP. A mobile terminal characterized by transmitting the result to a mobile communication network and a VoIP server. The method of claim 4, wherein The control unit, Through the identification number (ID) and the password (PW) received through at least one of the profile stored in the memory, the public key received from the searched wireless Internet AP, the MAC address of the mobile terminal, the user input unit and the sensing unit. And controlling an authentication procedure for accessing the retrieved wireless Internet IP. The method of claim 4, wherein Further comprising a display unit for displaying at least one of the name of the searched wireless Internet AP, the presence of the profile of the searched wireless Internet AP, the sensitivity of the signal received from the searched wireless Internet AP, and the background registration log under the control of the controller Mobile terminal, characterized in that.

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