KR20120010526A - WiFi MOBILE TERMINAL AND INTERNET CONNECTING METHOD THEREOF - Google Patents

Abstract

PURPOSE: An internet access method of a WiFi terminal for connecting an open type AP without the waste of time is provided to guide an automatic access to the other AP to a user in case a terminal requests an internet access to an open type AP by DHCP. CONSTITUTION: A control unit of a mobile terminal checks the reception of an IP(Internet Protocol) allocated in a corresponding AP(Access Point)(S12). If IP is normally received from the AP, the control unit connects the internet through the IP(S13). If the IP is not normally received, the control unit checks the signal strength of the corresponding AP(S14). In case the RSSI(Received Signal Strength Indication) of the AP is higher than wireless performance of the mobile terminal, the control unit guides accessible AP and a DHCP(Dynamic Host Configuration Protocol) state of the AP(S15,S16).

Description

ＷｉＦｉ terminal and internet connection method {WiFi MOBILE TERMINAL AND INTERNET CONNECTING METHOD THEREOF}

The present invention relates to a WiFi terminal and an Internet access method thereof for guiding a connection failure cause and information of another AP when a plurality of WiFi terminals attempt to access an open AP. will be.

The mobile terminal may be configured to perform various functions. Examples of such various functions include data and voice communication functions, taking pictures or videos through a camera, storing voices, playing music files through a speaker system, and displaying images or videos.

Some mobile terminals include additional functionality to play games, while others are implemented as multimedia devices. Moreover, recent mobile terminals can receive broadcast or multicast signals to watch video or television programs. Further, efforts for supporting and increasing the functions of the mobile terminal continue. The foregoing efforts include not only changes and improvements in the structural components forming the mobile terminal, but also improvements in software or hardware.

Recently, as the penetration rate of smart phones has increased rapidly, internet access using mobile terminals has increased greatly. The method of using the Internet using the mobile terminal is largely a method of using an operator's network (3G network) or accessing a wireless LAN such as Wi-Fi (WiFi).

Among them, WiFi is a local area network capable of performing high-speed Internet within a certain distance of a relay device, that is, an AP (Access Point) is installed. The WiFi is not charged when accessing the Internet through a wireless LAN. However, in order to use the Internet for free using the WiFi, a relay device must be provided between the mobile terminal (or smart phone) and the Internet network. As a result, WiFi does not charge for Internet access, but it can only be used in areas where you can connect to a wireless LAN, such as a wireless router or wireless hub, for example, at home, at work, at coffee shops, in public offices, or in other limited places. Have

Therefore, as WiFi is widely used in various products recently, a plurality of users may simultaneously access a single AP using DHCP (Dynamic Host Configuration Protocol) in the limited space as described above. In this case, due to the limitation of the DHCP server of the AP, it is impossible to smoothly assign an IP (Internet Procotol) address to the WiFi terminal connected to the same AP.

An object of the present invention is a WiFi terminal and its Internet connection that can guide the user to the connection failure cause for the AP and information related to access to another AP when requesting an open access point (AP) using the WiFi terminal. To provide a method.

According to an aspect of the present invention, there is provided a method for accessing an Internet using a WiFi terminal, the method comprising: requesting an access to an open access point (AP) using a Dynamic Host Configuration Protocol (DHCP); And when the connection to the requested open AP fails, guiding access to another AP and the reason for the connection failure.

The reason for the connection failure may be indicated by displaying a text message in a separate pop-up window or in the form of a voice message.

The access to the open AP is determined to fail when no IP is allocated from the AP for a predetermined time or for a predetermined number of requests while the signal strength of the AP is good.

When the user requests access to another AP based on the guidance, the neighbor AP included in the AP list is searched and attempts to connect automatically.

The AP list includes a neighboring AP that can be accessed and an AP which has failed to access at present, and the failed AP is displayed together with the cause of failure.

WiFi terminal according to an embodiment of the present invention for realizing the above object and a wireless communication unit for requesting access to an open AP (Access Point); And a controller for guiding access to another AP and the reason for the failure when the access to the requested open AP fails.

The wireless communication unit includes a wireless internet module, and the control unit displays a text message or outputs a voice message in a separate pop-up window.

The controller determines that the access request has failed when no IP is allocated from the AP for a predetermined time or for a predetermined number of times in a state where the signal strength of the AP is good.

When the user requests access to another AP based on the guidance, the controller searches for a neighboring AP included in the AP list and attempts to connect automatically.

The AP list includes a neighboring AP that can be accessed and an AP which has failed to access at present, and the failed AP is displayed together with the cause of failure.

The present invention according to the embodiment by using the Dynamic Host Configuration Protocol (DHCP) when the user requests the Internet access to the open AP (Access Point) by informing the user of the cause of the connection failure and the automatic access to the other AP to the open AP There is an effect that can access the open AP faster and use the Internet without wasting time.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention;
2 is a block diagram of a wireless communication system in which a mobile terminal according to an embodiment of the present invention may operate.
3 is a diagram illustrating an example of an internet connection using a 3G network and Wi-Fi.
4 is a flowchart illustrating a method for guiding a connection state of an open AP when connecting to the Internet of a WiFi terminal according to an embodiment of the present invention.
5A and 5B are diagrams illustrating an example of informing a user of a connection failure source of a DHCP server of an open AP and a connection to another AP;

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 merely given in consideration of ease of preparation of the present specification, and do not impart any particular meaning or role by themselves. Therefore, it should be noted that the "module" and "unit" may be used interchangeably with each other.

The terminal may be implemented in various forms. For example, a terminal described herein includes a mobile terminal such as a mobile phone, a smart phone, a notebook computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation device, and the like. And fixed terminals such as digital TVs, desktop computers, and the like. In the following description, it is assumed that the terminal is a mobile terminal. However, it will be readily apparent to those skilled in the art that the configuration according to the following description may also be applied to the fixed terminal except for components specially configured for mobile use.

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 160, and an interface. The unit 170, the controller 180, and the power supply unit 190 may be included. 1 shows a mobile terminal having various components. However, not all illustrated components are required. A mobile terminal may be implemented by more components than the illustrated components, or a mobile terminal may be implemented by fewer components.

Hereinafter, the components will be described in turn.

The wireless communication unit 110 may include one or more components that allow wireless communication between the mobile terminal 100 and the wireless communication system or wireless communication between the mobile terminal 100 and a network on 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 related information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. 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.

Meanwhile, the broadcast related information may be provided through a mobile communication network, and 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 (MediaFLO). Digital broadcast signals can be received using digital broadcasting systems such as only), digital video broadcast-handheld (DVB-H), integrated services digital broadcast-terrestrial (ISDB-T), and the like. Of course, the broadcast receiving module 111 is configured to be suitable for all broadcasting systems that provide broadcasting 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 160.

In addition, 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. Here, 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 is a module for wireless Internet access, and the wireless Internet module 113 can be built in or externally. Wireless Internet technologies may include Wireless LAN (Wi-Fi), Wireless Broadband (Wibro), World Interoperability for Microwave Access (Wimax), High Speed Downlink Packet Access (HSDPA), and the like.

The short range communication module 114 refers to a module for short range communication. 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 115 is a GPS (Global Position System) module. According to the current technology, the GPS module calculates distance information and accurate time information from three or more satellites, and then applies triangulation to the calculated information, thereby obtaining three-dimensional current position information according to latitude, longitude, and altitude. It can be calculated accurately. Currently, 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 widely used. In addition, the GPS module may calculate speed information by continuously calculating the current position in real time.

An audio / video (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 an image frame such as a still image or a moving image obtained by the image sensor in the video communication mode or the photographing mode. The processed image frame may be displayed on the display module 151.

The image frame processed by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. 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 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. The microphone 122 may be implemented with various noise reduction algorithms for eliminating 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, a dome switch, a touch pad (constant voltage / capacitance), a jog wheel, a jog switch, and the like. In particular, when the touch pad forms a mutual layer structure with the display module 151 described later, this may be referred to as a touch screen.

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 position 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. Also, it is responsible for a sensing function related to whether or not the power supply unit 190 is powered on, whether the interface unit 170 is connected to an external device, and the like. The sensing unit 140 may include a proximity sensor 141. This will be described later with reference to the touch screen.

The interface unit 170 serves as an interface with all external devices connected to the mobile terminal 100. 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, Video input / output (I / O) ports, earphone ports, and the like.

Here, the identification module is a chip that stores 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 Universal Subscriber Identity Module (" USIM "), and the like. In addition, an apparatus having an identification module (hereinafter referred to as 'identification device') can be manufactured in a smart card format. Accordingly, the identification device can be connected to the terminal 100 through the port. 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.

In addition, when the mobile terminal 100 is connected to an external cradle, the interface unit 170 serves as a passage through which power from the cradle is supplied to the mobile terminal 100 or inputted from the cradle by a user. Various command signals may be a passage for transmitting to the mobile terminal. 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 output unit 150 is for outputting an audio signal, a video signal, or an alarm signal. The output unit 150 may include a display module 151, a sound output module 152, and an alarm unit 153.

The display module 151 displays and outputs information processed by the mobile terminal 100. For example, when the mobile terminal 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 a video call mode or a photographing mode, the mobile terminal 100 displays a photographed and / or received image, a UI, or a GUI.

Meanwhile, as described above, when the display module 151 and the touch pad have a mutual layer structure and constitute a touch screen, the display module 151 may be used as an input device in addition to the output device. The display module 151 may be a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, or a three-dimensional display. 3D display). Some of these displays can be configured to be transparent 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 is a transparent organic light emitting diode (TOLED). In addition, two or more display modules 151 may exist according to the implementation form of the mobile terminal 100. For example, an external display module (not shown) and an internal display module (not shown) may be simultaneously provided in the mobile terminal 100. The touch screen may be configured to detect a touch input pressure as well as a touch input position and area.

The audio output module 152 outputs audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, The sound output module 152 outputs an acoustic signal related to functions (e.g., call signal reception sound, message reception sound, etc.) performed in the mobile terminal 100. [ The sound output module 152 may include a speaker, a buzzer, and the like.

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 informing occurrence of an event in a form other than an audio signal or a video signal. For example, the signal may be output in the form of vibration. When a call signal is received or a message is received, the alarm unit 153 can output a vibration to notify it. Alternatively, when the key signal is input, the alarm unit 153 can output the vibration by the feedback to the key signal input. The user can recognize the occurrence of an event through the vibration output as described above. Of course, the signal for notification of event occurrence may be output through the display module 151 or the sound output module 152.

The memory 160 may store a program for processing and controlling the controller 180 and may provide a function for temporarily storing input / output data (for example, a phone book, a message, a still image, a video, etc.). It can also be done. In addition, the memory 160 may store data on vibration and sound of various patterns output when a touch input on the touch screen is performed.

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), RAM (RAM, Random Access Memory) SRAM (Static Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM (Programmable Read-Only Memory) magnetic memory, magnetic disk, It may include at least one type of storage medium of the optical disk. In addition, the mobile terminal 100 may operate a web storage that performs a storage function of the memory 160 on the Internet.

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. In addition, the control unit 180 may include a multimedia module 181 for multimedia playback. 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 the touch screen as text and an image, respectively.

The power supply unit 190 receives the external power and the internal power under the control of the controller 180 as a battery and supplies power required for the 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. In addition, the software codes may be stored in the memory 160 and executed by the control unit 180. [

The terminal 100 shown in FIG. 1 may be configured to be operable in a communication system capable of transmitting data through a frame or packet, including a wired / wireless communication system and a satellite based communication system. Can be.

2 illustrates a wireless communication system capable of operating a mobile terminal according to an embodiment of the present invention.

As shown in FIG. 2, the wireless communication system includes a plurality of terminals 100, a plurality of base stations (“BS”) 270, base station controllers (“BSCs”) 275, A mobile switching center (MSC) 280 may be included. The MSC 280 is configured to be connected to a public switched telephone network (PSTN) 290 and is also configured to be connected to BSCs 275. BSCs 275 may be coupled in pairs with BS 270 through a backhaul line. The backhaul line may be provided according to at least one of E1 / T1, ATM, IP, PPP, Frame Relay, HDSL, ADSL, or xDSL. Thus, a plurality of BSCs 275 may be included in the system shown in FIG.

Each BS 270 may comprise at least one sector, and each sector may comprise an omnidirectional antenna or an antenna pointing to a particular direction of radial from BS 270. [ In addition, each sector may include two or more antennas of various types. Each BS 270 may be configured to support a plurality of frequency assignments, each of which has a specific spectrum (eg, 1.25 MHz, 5 MHz, etc.).

The broadcast transmitter (BT) 295 transmits a broadcast signal to the terminals 100 operating in the system. The broadcast receiving module 111 shown in FIG. 1 is provided in the terminal 100 to receive a broadcast signal transmitted by the BT 295.

Satellite Positioning System (GPS) The satellites 300 help to locate at least one terminal of the plurality of terminals 100. Although two satellites are shown in FIG. 4, useful location information may be obtained by two or less or more satellites. The location information module 115 shown in FIG. 1 cooperates with satellites 300 to obtain desired location information. Here, the location can be tracked using not only the GPS tracking technology but also all the technologies that can track the location. Also, at least one of the GPS satellites 300 may optionally or additionally be responsible for satellite DMB transmission.

Among the typical operations of a wireless communication system, the BS 270 receives a reverse link signal from the various terminals 100. At this time, the terminals 100 are connecting a call, transmitting or receiving a message, or performing another communication operation. Each of the reverse link signals received by the particular base station 270 is processed by the particular base station 270. The data resulting from the processing is transmitted to the connected BSC 275. The BSC 275 provides call resource allocation and mobility management functions, including the organization of soft handoffs between the base stations 270. The BSC 275 also transmits the received data to the MSC 280 and the MSC 280 provides additional transmission services for connection with the PSTN 290. [ Similarly, the PSTN 290 connects to the MSC 280, the MSC 280 connects to the BSCs 275, and the BSCs 275 communicate with the BSs 270 ).

In FIG. 1, the wireless internet module 113 is a module for wireless internet access. The wireless internet module 113 connects to the internet using Wi-Fi, and the location information module 115 uses a global position system (GPS). You can detect the location. In addition, the memory 160 may store information on an area in which the wireless Internet is available, item setting information for performing an automatic script in the area in which the wireless Internet is available, and internet information actually scripted in the area.

3 shows an example of an internet connection using a 3G network and Wi-Fi.

As illustrated in FIG. 2, a terminal (or smartphone) user may access the Internet through a 3G network of a communication provider such as SKT or LGT, or may access the Internet through an open AP. In this case, a fee is charged when using the 3G network, and a fee is not charged when using WiFi.

In general, a user using a WiFi terminal in the same place may attempt to access the Internet with one open AP. In this case, the WiFi terminal requests a connection to the open AP by using a Dynamic Host Configuration Protocol (DHCP), and the DHCP of the open AP that receives the connection is allowed to assign an IP to each WiFi terminal. Accordingly, each WiFi terminal assigned an IP from the open AP can access the Internet through the corresponding open AP.

However, when a large number of users access a single open AP at the same time in a limited space, IP cannot be allocated to the WiFi terminal requesting access due to the limitation (over capacity) of the DHCP server, which causes some users to access the open AP. Unpredictable shape occurs. In this case, the user simply continues to connect to an open AP that is not currently connected (Full status) because it simply informs the user of simple information that cannot be accessed, but does not provide any information about the reason for the connection and the following follow-up action. Try and waste time.

Therefore, in the present invention, when a mobile terminal using WiFi (hereinafter, abbreviated to WiFi terminal) accesses an open AP, a guide method for automatically connecting to another AP while notifying the cause of connection failure for the corresponding AP, that is, a user interface To provide.

The WiFi terminal may analyze the received signal strength indicator (RSSI) of the open AP to which the user wants to access. In addition, if the WiFi terminal does not receive an IP address continuously when attempting to access a single open AP using DHCP, it may indicate that there is a problem with the DHCP server of the corresponding PA, that is, the DHCP is currently full. The access to the AP is made through the wireless communication unit of FIG. 1, more specifically, the wireless internet module.

Therefore, when the WiFi terminal attempts to connect to the open AP by DHCP, if the IP allocation by the DHCP server fails in the WiFi terminal and the RSSI of the open AP is higher than the wireless performance of the terminal, the DHCP of the AP is connected to the WiFi terminal. It displays the status that the server is full and displays a separate pop-up that prompts the user to connect to other nearby APs.

Therefore, when the user selects an automatic connection to another nearby AP, the WiFi terminal searches for the nearby open AP again and attempts to automatically connect to the other open AP. In this case, other open APs may be selected according to the priority or the RSSIs may be selected in the order of high priority.

In addition, the WiFi terminal indicates that the DHCP server of the AP is currently full in the AP list, thereby inducing the user not to connect to the full AP.

4 is a flowchart illustrating a method of guiding a connection state of an open AP when the WiFi terminal connects to the Internet according to an embodiment of the present invention.

As shown in FIG. 4, according to a user's command, the controller 180 of the mobile terminal requests Internet access from a predetermined AP using DHCP (S10). In this case, the mobile terminal is a WiFi terminal, and the AP is an open AP that can be accessed by several people at the same time.

When the Internet connection is requested, the DHCP server of the AP allocates an IP for accessing the Internet. However, when many users try to access the same AP at the same time, the DHCP server has a limited capacity, and thus, IPs cannot be allocated to mobile terminals of all users.

Therefore, the controller 180 of the mobile terminal checks whether the IP allocated from the AP is received after requesting an access to the AP (S11 and S12). As a result of the check, if the IP is normally received from the AP (when IP is allocated), the controller 180 accesses the Internet using the received IP (S13).

On the other hand, if the AP fails to allocate the IP and the IP is not normally received (within a predetermined time or more than a predetermined number of times), the controller 180 checks whether the signal strength of the AP is good. The check is accomplished by analyzing the strength (RSSI) information of the transmitted signal (S14) to compare whether the RSSI of the AP is currently higher than the wireless performance of the mobile terminal. (S15). For example, the wireless performance of the mobile terminal may be a preset reference RSSI or an RSSI of a signal transmitted by the mobile terminal.

If the check result indicates that the RSSI of the AP is greater than the RSSI of the mobile terminal, the controller 180 determines that the DHCP server of the AP is in a full state, and displays the DHCP server state of the AP on the display unit 151. The user is guided to access other APs in the vicinity (S16). Preferably, the status of the DHCP server is displayed in a separate pop-up window.

5A and 5B are diagrams illustrating an example of informing a user of a connection failure source of a DHCP server of an open AP and a connection to another AP.

As shown in FIG. 5A, when the IP allocation fails because the DHCP server of the open AP is full, the controller 180 texts a separate pop-up window 50 asking the status of the current DHCP server and whether the automatic connection is made. A message is displayed, for example, "The current AP cannot connect to the DHCP server. Do you want to connect to another AP automatically?" In addition, as another embodiment, a message asking the status of the current DHCP server and whether or not the automatic connection may be made to the user through voice guidance.

When the user selects "confirmation" based on the text or voice message, the controller 180 searches for the neighboring AP included in the AP list again and automatically attempts to connect to the AP meeting the predetermined search condition. The predetermined search condition may be determined in order of high priority or high RSSI.

In addition, as shown in FIG. 5B, the controller 180 indicates that the DHCP server of the corresponding AP is in a full state in the AP list, and the user attempts to connect again to an AP which is not currently connected, for example, a CISCO AP. Do not induce.

As described above, the present invention enables the user of the WiFi terminal to automatically connect to another AP while notifying the cause of connection failure for the AP when the user accesses the open AP, thereby enabling the user to use the Internet more quickly without wasting time. have.

In addition, according to an embodiment of the present invention, the above-described method may be embodied as computer readable codes on a medium in which a program is recorded. The computer-readable medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of the computer-readable medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, and also implemented in the form of a carrier wave (for example, transmission over the Internet) . The computer may also include a control unit of the terminal.

The mobile terminal described above can be applied to not only the configuration and method of the embodiments described above but also all or some of the embodiments may be selectively combined so that various modifications may be made to the embodiments It is possible.

110: wireless communication unit 111: broadcast receiving module
112: mobile communication module 113; Wireless Internet Module
140; Sensing unit 150: output unit
151: display unit 160: memory
180:

Claims (11)

Requesting access to an open AP;
And a step of guiding connection to another AP and a reason for the failure when the access to the requested open AP fails. The method of claim 1, wherein the connection failure reason is
Internet access method using a WiFi terminal, characterized in that to guide by displaying a text message in a separate pop-up window. The method of claim 1, wherein the connection failure reason is
Internet connection method using a WiFi terminal, characterized in that guide in the form of a voice message. The method of claim 1, wherein the connection to the open AP is
And determining that a failure occurs when the IP is not allocated from the AP for a predetermined time or for a predetermined number of requests while the signal strength of the AP is good. The Internet using a WiFi terminal according to claim 1, further comprising: searching for a neighboring AP included in the AP list and automatically attempting to connect when the user requests access to another AP based on the guidance. How to connect. The method of claim 5, wherein the AP list is
A neighboring AP that can be connected and an AP that has failed to access at present, wherein the failed AP is displayed together with the cause of failure. A wireless communication unit for requesting access to an open AP;
And a controller for guiding access to another AP and the reason for the failure when the access to the requested open AP fails. 8. The apparatus of claim 7, wherein the control unit
WiFi terminal, characterized in that to display a text message or to output a voice message in a separate pop-up window. 8. The apparatus of claim 7, wherein the control unit
And determining that the access request has failed when the IP is not allocated from the AP for a predetermined time or for a predetermined number of requests while the signal strength of the AP is good. 8. The apparatus of claim 7, wherein the control unit
When the user requests access to another AP based on the guidance, the WiFi terminal, characterized in that the automatic attempt to connect by searching for the neighboring AP included in the AP list. The method of claim 10, wherein the AP list is
Wi-Fi terminal comprising a connectable peripheral AP and the currently failed access AP, the cause of failure is displayed on the failed AP.

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