KR102022606B1 - Appratus for assigning channel for wirelss LAN and method for the same - Google Patents

Abstract

The present application relates to a wireless LAN access method and a terminal device using the same. According to one embodiment of the present invention, the wireless LAN access method may comprise: a scan step of searching access points positioned around; a target access point extraction step of extracting a target access point corresponding to an access history stored in the terminal device using a service set identifier (SSID) and basic service set identifier (BSSID) of the searched access points; and a wireless LAN access step of performing automatic access with the extracted target access point using an access profile stored in the terminal device.

Description

Wireless LAN access method and terminal device using same {Appratus for assigning channel for wirelss LAN and method for the same}

The present application relates to a wireless LAN access method and a terminal device using the same, and to a wireless LAN access method and a terminal device using the same, which can prevent another person's access to the wireless LAN and improve security when the wireless LAN is connected. .

In general, a wireless LAN is a data communication system implemented as an extension of a wired LAN and uses a radio frequency technology to transmit or receive data in the air without a cable connection.

Such a WLAN may be connected to the Internet using a wireless repeater, that is, an access point (hereinafter referred to as an AP), and in the case of a general home, the Internet line may be shared by integrating an Internet sharing function with the AP. In the past, the wireless LAN had a radio wave reaching only 10m, but has recently been extended to 50m to hundreds of meters. In addition, the transmission speed of the wireless LAN is also improved to enable the transmission and reception of a large amount of multimedia. As a result, wireless LANs are installed not only in schools, airports and hotels but also in subway stations, cafes and restaurants, and can be used to provide high-speed data services. In addition, homes using APs are increasing.

Published Patent Publication 10-2006-0021131

The present application is to provide a wireless LAN access method and a terminal device using the same that can prevent the other person access to the WLAN, and improve the security when connecting to the WLAN.

The present application is to provide a wireless LAN access method and a terminal device using the same, when the wireless LAN region overlaps with a neighboring house, which can prevent access to the neighboring WLAN.

The present application is to provide a wireless LAN access method and a terminal device using the same can improve the access method of the terminal device, if there are a plurality of wireless LANs of the same name.

In accordance with an aspect of the present invention, there is provided a wireless LAN access method comprising: a scanning step of searching for access points located in a vicinity; A target access point extracting step of extracting a target access point corresponding to a connection history stored in the terminal device by using the retrieved access point identifier (SSID) and basic service set identifier (BSSID); And a wireless LAN access step of performing an automatic access to the extracted target access point using the access profile stored in the terminal device.

Here, the connection history may include SSIDs and BSSIDs of target access points having a history of the terminal device previously connected, and the connection profile may include an SSID and a password for accessing the target access points.

The extracting of the access point may include comparing the SSID of the target access point stored in the access history with the SSIDs of the searched access points, and extracting access points having the same SSID as the target access point among the searched access points. Difference comparison step; And a second comparison step of extracting an access point having the same BSSID as the target access point by comparing the BSSIDs of the searched access points with the BSSID of the target access point if there are a plurality of access points having the same SSID. Can be.

Here, in the WLAN access step, if there is only one access point having the same SSID in the first comparison step, automatic access may be performed to the extracted access point, and in the WLAN access step, the accessed target access is performed. The SSID and the BSSID of the point can be stored in the connection history.

Here, the scanning step may include passive scanning for receiving a beacon signal periodically transmitted by the access point, or when the terminal device sends a probe request signal, the scanning device may respond to the probe request signal. By using active scanning to receive a probe response signal transmitted by the access point, it is possible to search for access points located in the vicinity of the terminal device. In this case, the beacon signal or probe response message may include an SSID and a BSSID for identifying the access point, and the BSSID may be a medium access control address (MAC) of the access point.

According to an embodiment of the present invention, in order to execute the above-described WLAN connection method, there may be a computer program combined with hardware and stored in a medium.

Terminal device according to an embodiment of the present invention, the scan unit for searching for access points located in the vicinity; A target access point extracting unit for extracting a target access point corresponding to a connection history by using the retrieved SSIDs (Service Set Identifiers) and BSSIDs (Basic Service Set Identifiers); And a WLAN access unit performing automatic access to the extracted target access point using the access profile.

Here, the connection history may include SSIDs and BSSIDs of target access points having a history of the terminal device previously connected, and the connection profile may include an SSID and a password for accessing the target access points.

The target access point extracting unit compares the SSIDs of the access points stored in the access history with the SSIDs of the searched access points, extracts access points having the same SSID among the searched access points, and access points having the same SSID. If there are a plurality of BSSIDs of the searched access points, the access points having the same BSSID may be extracted by comparing the BSSIDs of the access points stored in the access history.

Here, when there is only one access point having the same SSID, the target access point extractor may perform automatic access to the extracted access point.

In addition, the solution of the said subject does not enumerate all the characteristics of this invention. Various features of the present invention and the advantages and effects thereof may be understood in more detail with reference to the following specific embodiments.

According to the WLAN access method and the terminal apparatus using the same according to an embodiment of the present invention, it is possible to prevent the neighboring house from accessing the WLAN when the WLAN area with the neighboring house overlaps. In addition, it is possible to solve the security problems caused by the connection of another person's WLAN.

According to a wireless LAN access method and a terminal apparatus using the same according to an embodiment of the present invention, a user does not need to separately input a BSSID for his or her access point or select an access point to access, and automatically accesses his or her own access according to a connection history. You can connect to the point. That is, since the user does not need to perform a separate operation, the convenience for use can be increased.

1 is a schematic diagram showing a connection environment of a wireless LAN according to an embodiment of the present invention.
2 and 3 is a block diagram showing a terminal device according to an embodiment of the present invention.
4 and 5 are flowcharts illustrating a wireless LAN access method according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. However, in describing the preferred embodiment of the present invention in detail, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, the same reference numerals are used throughout the drawings for parts having similar functions and functions.

In addition, throughout the specification, when a part is 'connected' to another part, it is not only 'directly connected' but also 'indirectly connected' with another element in between. Include. In addition, the term 'comprising' of an element means that the element may further include other elements, not to exclude other elements unless specifically stated otherwise. In addition, the terms "~ unit", "module", etc. described in the specification mean a unit for processing at least one function or operation, which may be implemented in hardware or software or a combination of hardware and software.

1 is a schematic diagram showing a connection environment of a wireless LAN according to an embodiment of the present invention.

Referring to FIG. 1, a plurality of houses H1 and H2 may be located in a common house such as an apartment or a villa, and access points AP1 and AP2 respectively installed between neighboring houses H1 and H2. WLAN regions may overlap each other.

The user may access the first access point AP1 installed in the home H1 by using the terminal apparatus 100, and may receive a service by accessing a network such as the Internet through the first access point AP1. Can be. In FIG. 1, a smartphone is illustrated as the terminal device 100, but the terminal device 100 may be a mobile phone, a navigation terminal, a laptop computer, a digital broadcasting terminal, or a personal digital assistant in addition to the smartphone. ), Portable multimedia player (PMP), slate PC, tablet PC (tablet PC), ultrabook, wearable device (e.g., smartwatch, glass type terminal ( smart glass, head mounted display (HMD), and the like. In addition, anything that can be connected to the wireless LAN by accessing the access point may correspond to the terminal device 100.

On the other hand, when the user is located in the living room or the like, since the distance to the first access point AP1 is close, the wireless LAN signal of the first access point AP1 may be strongly received, and the first access point AP1 may be used. Can be preferentially connected to. On the other hand, when the user moves to a room located inside, the WLAN signal of the first access point AP1 received by the user terminal device 100 may be relatively weak. On the other hand, since the second access point AP2 installed in the neighboring house H2 is closer to the location, the wireless LAN signal of the second access point AP2 may be stronger, and the terminal device 100 may have a second access point. 2 may attempt to connect to the access point AP2. As described above, when the user resides in an apartment house such as an apartment or a villa, the terminal 100 may receive a wireless LAN signal of the access point AP2 of the neighboring house H2 from his / her house H1. May frequently occur when attempting to connect to the access point AP2 of the neighboring house H2.

Here, when the user of the neighboring house H2 sets the name (SSID) of his wireless LAN and also sets a password, it is possible to prevent others from connecting to his or her access point (AP2). However, in general, when a general access point is purchased and used, the name of the WLAN is not changed separately, and a password is not set or a common number such as 1111 and 1234 is often set. Therefore, the terminal device 100 of the user may search for a plurality of wireless LANs having the same SSID, and may also access a second access point AP2 located in the neighboring house H2 without difficulty. have. As such, when another person accesses his or her access point (AP2) without permission, the user may experience inconvenience such as delay in accessing his or her own wireless LAN, and another person may access another terminal device connected to the wireless LAN without permission. As a result, security problems may occur.

Here, according to the terminal device 100 according to an embodiment of the present invention, even when there are a plurality of access points having the same WLAN name, it is possible to determine and access its own access point. Hereinafter, the terminal device 100 according to an embodiment of the present invention will be described.

2 is a block diagram illustrating a terminal device according to an embodiment of the present invention.

Referring to FIG. 2, the terminal device 100 according to an embodiment of the present invention may include a scan unit 110, a target access point extractor 120, and a wireless LAN access unit 130.

The scan unit 110 may search for access points located in the vicinity. In order to access the WLAN, the terminal device 100 may first search for access points forming the WLAN. In this case, the scan unit 110 may search for access points located in the vicinity by using passive scanning or active scanning.

In the case of passive scanning, the scan unit 110 may receive a beacon signal, etc. periodically transmitted by access points located in the vicinity of the scanning unit 110 to detect access points located in the vicinity of the terminal device 100. That is, peripheral access points may be set to periodically transmit beacon signals, and the scan unit 110 may receive beacon signals transmitted by the access points.

In the case of active scanning, the scan unit 110 may first transmit a probe request signal to the surroundings, and the access points may transmit a probe response signal in response to the probe request signal. That is, the scan unit 110 may detect access points located in the vicinity using the received probe response signal.

Meanwhile, the beacon signal or the probe response message received by the scan unit 110 may include a service set identifier (SSID) and a basic service set identifier (BSSID) for identifying each access point. The SSID is an identifier for distinguishing different WLANs, and may be 32-bit text data. The BSSID is a basic service set (BSS), which is the most basic network configuration unit in 802.11, the WLAN standard. Corresponds to the 48-bit identifier or network ID used to classify the data. In general, the BSSID may be set to a medium access control address (MAC) of the access point.

The target access point extractor 120 may extract a target access point corresponding to the access history by using the service set identifier (SSID) and the basic service set identifier (BSSID) of the access points retrieved by the scan unit 110. have. In the case of an access point having a history of accessing the terminal device 100, the terminal device 100 may be an access point mainly accessed by a user such as an office, a subway, a cafe, or an access point owned by the user. Accordingly, the target access point extractor 120 may extract an access point corresponding to the connection history stored in the terminal device 100 from among the plurality of searched access points and set it as the target access point. In this case, the access history may include SSIDs, BSSIDs, etc. of target access points having a history of the terminal 100 previously connected.

Specifically, the target access point extractor 120 may first compare the SSIDs of the access points retrieved by the scan unit 110 with the SSIDs of the access points stored in the connection history. Here, the SSID is text data indicating each WLAN and corresponds to a name of a WLAN set by an operator operating the corresponding access point. Therefore, if the SSIDs are the same, it can be considered that they are connected to the same WLAN, so that the target access point can be extracted primarily using the SSID.

However, when an operator of an access point installs the access point, there are many cases in which the SSID is not set separately, and the manufacturer of the access point may set the same SSID of each access point and release the same. Therefore, although the WLAN provided by different access points, there may be a plurality of access points having the same SSID.

Here, when there is only one target access point extracted by using the SSID, the target access point extractor 120 may set the extracted access point as the target access point.

On the other hand, when there are a plurality of access points extracted using the SSID, the target access point may be extracted using the BSSIDs of the respective access points. That is, the target access point extractor 120 may compare the BSSIDs of the searched access points with the BSSIDs of the access points stored in the access history. Thereafter, if there is an access point having the same BSSID, it may be set as the target access point. Here, the BSSID may be an identifier set differently for each access point, such as a MAC address. Therefore, using the BSSIDs of the respective access points, it is possible to specify the access points to which the terminal device 100 has previously connected.

That is, the terminal device 100 may extract an access point previously accessed by using the SSID primarily, and when there are a plurality of access points having the same SSID, the terminal device 100 may be secondarily used by using the BSSID. ) May specify the access point previously connected.

The WLAN access unit 130 may perform an automatic access to the extracted target access point using the connection profile. In this case, the access profile may store SSIDs and passwords of access points previously accessed by the terminal device 100.

In detail, when the target access point is extracted, the WLAN access unit 130 may attempt to automatically connect to the target access point. In this case, the access point may request the SSID and the password, which is the name of the WLAN, from the WLAN access unit 130, and the WLAN access unit 130 may input the SSID and the password of the target access point using the connection profile. . That is, since the SSID and password of the previously accessed access points are stored in the access profile, the WLAN access unit 130 may perform an automatic access to the corresponding access point using the access profile. In this case, the user does not need to separately perform an input for accessing the target access point, and the terminal apparatus 100 may automatically access the target access point. Meanwhile, when the access to the target access point is completed, the WLAN access unit 130 may update and store the access history and access profile of the access target access point.

As shown in FIG. 3, the terminal device 100 according to an embodiment of the present invention may include a physical configuration such as a processor 10, a memory 40, and the like. One or more modules configured to be executed by (10) may be included. Specifically, the one or more modules may include a scan module, a target access point extraction module, a wireless LAN access module, and the like.

The processor 10 may execute various software programs and an instruction set stored in the memory 40 to perform various functions and to process data. The peripheral interface unit 30 may connect an input / output peripheral device of the computer device to the processor 10 and the memory 40, and the memory controller 20 may include the memory 10 of the processor 10 or a component of the computer device. In the case of accessing, the function of controlling the memory access may be performed. In some embodiments, the processor 10, the memory controller 20, and the peripheral interface unit 30 may be implemented on a single chip or may be implemented as separate chips.

The memory 40 may include fast random access memory, one or more magnetic disk storage devices, nonvolatile memory such as a flash memory device, and the like. In addition, the memory 40 may further include a storage device located away from the processor 10, a network-attached storage device accessed through a communication network such as the Internet, and the like.

The display unit 50 may be configured to display the content of the web browser so that the user can check the contents of the web browser. For example, the display unit 50 may include a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, and a flexible display. The content of the web browser can be displayed to the user using a 3D display, an electrophoretic display, or the like. However, the content of the present invention is not limited thereto, and the display unit may be implemented in various ways.

The input unit 60 receives input from a user, and includes a keyboard, a keypad, a mouse, a touch pen, a touch pad, a touch panel, and a jog. A jog wheel, a jog switch, and the like may correspond to the input unit 60.

In addition, although not shown in FIG. 3, a communication unit may be further included. The communication unit (not shown) may be connected to a wireless or wired communication network to communicate with another terminal device or server. According to an embodiment, a mobile communication module, a short range communication module, a wireless internet module, a location information module, etc. may be included in the communication unit.

The mobile communication module may include technical standards or communication methods (eg, Global System for Mobile communication (GSM), Code Division Multi Access (CDMA), Wideband CDMA (WCDMA), and High Speed Downlink Packet Access). ), A wireless signal may be transmitted and received with an adjacent base station on a mobile communication network constructed according to Long Term Evolution (LTE) and Long Term Evolution-Advanced (LTE-A).

The near field communication module is for short range communication, and includes Bluetooth ™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and Near Field (NFC). Short-range communication can be supported using communication, wireless-fidelity (Wi-Fi), and wireless universal serial bus (Wireless USB) technologies.

The wireless internet module is a module for wireless internet access and may transmit and receive wireless signals in a communication network according to wireless internet technologies. Examples of wireless Internet technologies include Wireless LAN (WLAN), Wireless-Fidelity (Wi-Fi), Wireless Fidelity (Wi-Fi) Direct, Digital Living Network Alliance (DLNA), Wireless Broadband (WiBro), and WiMAX (World). Interoperability for Microwave Access).

The location information module is a module for acquiring the location of the terminal device. Examples of the location information module include a global positioning system (GPS) module or a wireless fidelity (WiFi) module. That is, the terminal device 100 may receive a signal transmitted by the GPS satellites by using the GPS module, and may obtain the location of the terminal device 100 by using the same.

On the other hand, as shown in Figure 3, the terminal device 100 according to an embodiment of the present invention, the operating system in the memory 40, the scan module, the target access point extraction module and the wireless LAN corresponding to the application program Connection module and the like. Here, each module may be stored in the memory 40 as a set of instructions for performing the above-described function.

Accordingly, the terminal device 100 according to an exemplary embodiment of the present invention may access the memory 40 so that the processor 10 may execute instructions corresponding to each module. However, the scan module, the target access point extraction module, and the wireless LAN access module correspond to the scan unit, the target access point extraction module, and the wireless LAN access unit, respectively, and thus detailed description thereof will be omitted.

4 and 5 are flowcharts illustrating a wireless LAN access method according to an embodiment of the present invention.

4 and 5, the WLAN access method according to an embodiment of the present invention may include a scan step S10, a target access point extraction step S20, and a WLAN connection step S30. .

Hereinafter, a WLAN access method according to an embodiment of the present invention will be described with reference to FIGS. 4 and 5.

In the scan step S10, the terminal device can search for access points located nearby. Here, the terminal device can search for access points located in the vicinity by using passive scanning or active scanning.

Specifically, in the case of passive scanning, the terminal device may receive a beacon signal that is periodically transmitted by the access point to detect access points located in the vicinity of the terminal device. In the case of active scanning, when the terminal device first transmits a probe request signal, the access point may transmit a probe response signal in response to the probe request signal. In this case, the terminal device may detect access points located in the vicinity by using the received probe response signal.

Here, the beacon signal or probe response message may include a service set identifier (SSID), a basic service set identifier (BSSID), etc. for identifying an access point. The SSID may be 32-bit text data for identifying each WLAN, and the BSSID is a 48-bit identifier or network used to distinguish a basic service set (BSS), which is a basic network configuration unit. Corresponds to the ID. According to an embodiment, the BSSID may be set as a medium access control address (MAC) of the access point.

In the target access point extraction step (S20), the target access point corresponding to the connection history stored in the terminal device may be extracted using the SSID and the BSSID of the searched access points. That is, the access point corresponding to the connection history stored in the terminal device may be extracted from the plurality of searched access points, and set as the target access point. In this case, the access history may include SSIDs, BSSIDs, etc. of target access points having a history of previously connected terminal devices.

Specifically, as shown in FIG. 5, by comparing the SSIDs of the searched access points with the SSIDs of the access points stored in the access history, access points having the same SSID as the target access point may be extracted (S21). Here, the SSID is text data indicating each WLAN and corresponds to a name of a WLAN set by an operator operating the corresponding access point. Therefore, if the SSIDs are the same, it can be considered that they are connected to the same WLAN, so that the target access point can be extracted primarily using the SSID.

However, when an operator of an access point installs the access point, there are many cases in which the SSID is not set separately, and the manufacturer may set the same SSID of each access point and release the same. Therefore, although the wireless LAN provided by different access points, there may be a plurality of access points having the same SSID (S22).

If there is only one target access point extracted using the SSID, the extracted access point may be extracted as the target access point (S23).

On the other hand, when there are a plurality of access points extracted using the SSID, the target access point may be extracted using the BSSIDs of the respective access points (S24). That is, when the BSSIDs of the searched access points are compared with the BSSIDs of the access points stored in the access history, when there is an access point having the same BSSID, it may be set as the target access point (S24). Here, the BSSID may be an identifier set differently for each access point, such as a MAC address. Thus, using the BSSID of each of the access points, it is possible to specify the access points to which the terminal device has previously connected.

In the WLAN access step (S30), it is possible to perform an automatic connection to the extracted target access point using the connection profile stored in the terminal device. Since the target access point is extracted in the target access point extraction step (S20), the terminal device may attempt to access the target access point.

In detail, the terminal apparatus may request access to the target access point, and in response thereto, the target access point may request the SSID and the password of the target access point. Here, since the SSID and the password for accessing the target access point are stored in the access profile, the access to the target access point may be performed using the access profile in the WLAN access step (S30). That is, the terminal apparatus 100 may automatically access the target access point without the user having to perform separate input or the like. The access profile stores SSIDs and passwords of access points previously accessed by the terminal device 100. When the access to the target access point is completed, the access history and access profile of the target access point may be updated and stored. .

The present invention described above can be embodied as computer readable codes on a medium in which a program is recorded. The computer readable medium may be to continuously store a computer executable program or temporarily store the program for execution or download. In addition, the medium may be a variety of recording means or storage means in the form of a single or several hardware combined, not limited to a medium directly connected to any computer system, it may be distributed on the network. Examples of the medium include magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CD-ROMs and DVDs, magneto-optical media such as floptical disks, And ROM, RAM, flash memory, and the like, configured to store program instructions. In addition, examples of another medium may include a recording medium or a storage medium managed by an app store that distributes an application or a site or server that supplies or distributes various software. Accordingly, the above detailed description should not be construed as limiting in all aspects and should be considered as illustrative. The scope of the invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the invention are included in the scope of the invention.

The present invention is not limited by the above-described embodiment and the accompanying drawings. It will be apparent to those skilled in the art that the present invention may be substituted, modified, and changed in accordance with the present invention without departing from the spirit of the present invention.

100: terminal device 110: scan unit
120: target access point extraction unit 130: wireless LAN connection unit
S10: scan step S20: target access point extraction step
S30: wireless LAN access step

Claims (13)

In a wireless LAN connection method of a terminal device,
A scan step of searching for access points located in the periphery;
A target access point extracting step of extracting a target access point corresponding to a connection history stored in the terminal device by using the retrieved access point identifier (SSID) and basic service set identifier (BSSID); And
And a wireless LAN access step of performing an automatic connection to the extracted target access point using the access profile stored in the terminal device.
The connection history includes SSIDs and BSSIDs of target access points having a history of the terminal device previously connected, and the connection profile includes SSIDs and passwords for connecting to the target access points,
The access point extraction step
A first comparison step of extracting access points having the same SSID as the target access point among the searched access points by comparing the SSID of the target access point stored in the access history with the SSIDs of the searched access points; And
If there are a plurality of access points having the same SSID, comparing the BSSIDs of the searched access points with the BSSID of the target access point, and including a second comparison step of extracting an access point having the same BSSID as the target access point. Wireless LAN access method characterized in that.
delete delete The method of claim 1, wherein the wireless LAN access step
If there is one access point having the same SSID in the first comparison step, the WLAN access method characterized in that the automatic access to the extracted access point.
The method of claim 1, wherein the wireless LAN access step
And storing the SSID and the BSSID of the accessed target access point in the connection history.
The method of claim 1, wherein the scanning step
Passive scanning, which receives a beacon signal periodically transmitted by the access point, or when the terminal device sends a probe request signal, the access point transmits in response to the probe request signal. And access points located in the vicinity of the terminal device by using active scanning for receiving a probe response signal.
The method of claim 6, wherein the beacon signal or probe response message
WLAN access method comprising a SSID and a BSSID for identifying the access point.
8. The method of claim 7, wherein the BSSID is
Wireless access method characterized in that the MAC address (Medium Access Control Address) of the access point.
A computer program stored in a medium in combination with hardware for executing the wireless LAN connection method of any one of claims 1 and 4.
A scan unit to search for access points located in the periphery;
A target access point extracting unit for extracting a target access point corresponding to a connection history by using the retrieved SSIDs and basic service set identifiers of the access points; And
By using a connection profile, including the wireless LAN connection for performing an automatic connection to the extracted target access point,
The connection history includes SSIDs and BSSIDs of target access points having a history of the terminal device previously connected, and the connection profile includes SSIDs and passwords for connecting to the target access points,
The target access point extracting unit
Extracts access points having the same SSID among the searched access points by comparing the SSID of the access point stored in the access history with the SSIDs of the searched access points,
And if there are a plurality of access points having the same SSID, comparing the BSSIDs of the searched access points with the BSSIDs of the access points stored in the access history, and extracting an access point having the same BSSID.
delete delete The method of claim 10, wherein the target access point extractor
And when there is one access point having the same SSID, the terminal device characterized in that the automatic access to the extracted access point.

Images