KR20130053341A - Access point auto selection apparatus and method for wi-fi systems - Google Patents

Abstract

PURPOSE: A device for automatically selecting a router of a Wi-Fi system and a method thereof are provided to enable a user to select an optimal router by considering signal strength in a connecting process in the Wi-Fi system. CONSTITUTION: A reception sensitivity unit(330) extracts an AP(Access Point) in which reception sensitivity is over a set reception sensitivity from a second AP. The reception sensitivity unit is selected from a third AP list. A throughput measuring unit(340) measures a downlink throughput for each AP of the third AP list during a reference time. The throughput measuring unit selects a fourth list. A display unit(350) displays the fourth AP list. [Reference numerals] (310) Preference list setting unit; (320) Name search unit; (330) Reception sensitivity unit; (340) Throughput measuring unit; (350) Display unit

Description

Access point auto selection apparatus and method for WI-FI systems

The present invention relates to a device and method for automatically selecting a router in a WIFI system, and more particularly, to an apparatus and a method for facilitating a user's convenience by enabling an automatic selection of a router in a WIFI system. will be.

WI-FI (IEEE 802.11 Wireless LAN) is a combination of Hi-Fi and High Fidelity (Wi-Fi) wireless technology, a wireless LAN technology that enables high-performance wireless communications.

Wireless LAN is a method of establishing a network using radio waves or lights without using wires when constructing a network. Also called 802.11 (Wi-Fi) (IEEE 802.xx is a set of standards for the LAN of IEEE) Is a wireless standard proposed by 3Com, Cisco Systems, Apple Computer, and Lucent Technologies.

They are forming an organization called Wireless Ethernet Compatibility to develop network equipment that allows consumers to connect a home computer to a wireless network and share a single Internet connection.

It uses the 2.4GHz frequency band and was approved as a wireless LAN standard in September 1999.

This technology will enable notebook computers to be connected wirelessly around the house. With this high-speed technology, users can connect more than five PCs and transfer large files, graphics, video and audio.

Wireless Ethernet offers speeds of 11 Mbps per second and can be used anywhere in a 500m radius, under optimal conditions, and anywhere at home or at work.

Simply connect your wireless hub to the switch, plug it into your firewall and cable modem, and you're ready to go. Wireless hubs have antennas.

However, in order to access a router (AP) of a Wi-Fi system, a user has to search for an AP of a service provider to which he / she subscribes, and also has to select an accessible AP.

Even if one AP is connected, if the downlink traffic is significantly less than the uplink, the AP has a high probability of failing, and thus has to repeat the process of searching, authenticating, and combining other APs.

Embodiments of the present invention provide a router automatic selection device and method for allowing a user to select an optimal router in consideration of signal strength in the process of searching for or accessing a router in a WIFI system. It is.

According to an aspect of the present invention, there is provided a router (AP) automatic selection apparatus of a Wi-Fi system according to an embodiment of the present invention, based on a router (AP) candidate preset in a WiFi zone. A preference list setting unit for selecting an AP list; A name search unit for extracting an AP subscribing to a service based on an access point name (SSID: Service Set Identifier) from the first AP list and selecting a second AP list; A reception sensitivity unit for extracting an AP having a preset reception sensitivity from the second AP list and selecting a third AP list; A throughput measurement unit configured to select a fourth AP list by measuring downlink throughput during a reference time for each AP of the third AP list; And a display unit for displaying the fourth AP list.

Preferably, the throughput measuring unit performs the throughput measurement only on APs having a reference rank or higher in the third AP list.

The apparatus may further include an automatic connection unit performing an association process with the first rank router AP in the fourth AP list.

Preferably, the comparison unit extracts a difference value between the amount of data in the uplink and the amount of data in the downlink for a reference time after the combining process with the first sharer AP. If the difference is greater than or equal to the reference value, the automatic connection unit alternates with the first rank router AP and performs an association process with the second rank router AP in the fourth AP list.

A method of automatically selecting a router (AP) of a Wi-Fi (WIFI) system according to an embodiment of the present invention for achieving the technical problem is based on a first router (AP: candidate) preset in a Wi-Fi zone. A preference list setting step of selecting an AP list; A name searching step of extracting an AP subscribing to a service based on an access point name (SSID: Service Set Identifier) from the first AP list and selecting a second AP list; A reception sensitivity checking step of extracting an AP having a preset reception sensitivity from the second AP list and selecting a third AP list; A throughput measurement step of selecting a fourth AP list by measuring downlink throughput during a reference time for each AP of the third AP list; And a displaying step of displaying the fourth AP list.

Preferably, the throughput measurement step is characterized in that the throughput measurement is performed only for the AP of a higher than the reference rank in the third AP list.

The method may further include an automatic association step of performing an association process with the first rank router AP in the fourth AP list.

Preferably, a comparison step of extracting a difference value between the amount of data in the uplink and the amount of data in the downlink for a reference time after the combining process with the first sharer AP; In the automatic connection step, when the difference is greater than or equal to the reference value, the connection with the first rank router (AP) is switched and the second rank router (AP) in the fourth AP list is characterized in that the association process is performed.

Preferably, the comparison step is repeated at a predetermined period, and the switching with the first rank router AP and the association with the second rank router AP are performed based on the difference value.

According to the router automatic selection apparatus and method of the Wi-Fi system according to the present invention, the process of searching for a router artificially made by a conventional user can be omitted, and the optimal router can be introduced by introducing signal strength in the process of selecting a router. It has the advantage of making a choice.

According to the router automatic selection apparatus and method of the Wi-Fi system according to the present invention, after the association process of the user terminal to the router (AP) by comparing the amount of data transmission in the upward direction and the downward direction, the connected router is not available. Determining that there is an advantage that can automatically seek and access other routers to facilitate the user's convenience.

1 is a view illustrating an operation process of a Wi-Fi system.
2 is a diagram illustrating an embodiment of an infrastructure mode of a Wi-Fi system.
3 is a view showing an embodiment of the router automatic selection device of the Wi-Fi (WIFI) system according to the present invention.
4 is a flowchart illustrating a router automatic selection method of a Wi-Fi system according to the present invention.
5 is a view showing an application embodiment of the router automatic selection method of the Wi-Fi (WIFI) system according to the present invention.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

1 is a view illustrating an operation process of a Wi-Fi system.

As shown in FIG. 1, the Wi-Fi system includes a user terminal (UE) 110, an access point 120, and a server 130.

In the discovery process (S140), the router (AP) has a number of capabilities (speed, encryption, etc.) and the service group name (SSID: Service Set ID) to which the AP can support itself for the user terminals to access it. The beacon message is sent periodically.

Each user terminal 110 first performs a process of searching for what AP is in its periphery (S140).

To this end, passively receiving the beacon message transmitted by the AP to know the support capacity or SSID of the AP.

Alternatively, the terminal may actively broadcast a probe request message to the AP to receive the probe response message containing the SSID and the operation speed of the AP and select the corresponding AP.

The present invention relates to a process in which a user terminal searches for a router (AP) to overcome the disadvantage that is conventionally performed by a user.

In addition, in order to increase the reliability of the selected AP in the process of searching for a router (AP) is characterized by introducing the signal strength, throughput, etc. as a criterion of AP selection.

The user terminal selecting the appropriate AP by the discovery process performs an authentication procedure for proving that the terminal is a valid terminal (S150).

When security is neglected, a typical authentication procedure is a formal authentication procedure called an open system authentication procedure. In addition, the shared key authentication process is used, but there is a problem that is vulnerable to security.

If the authentication is successful, the process of accessing the wireless terminal to the AP performs an association process (S160).

After the combining process, the data message is transmitted to another device such as a server via the AP (S170, S180).

2 is a diagram illustrating an embodiment of an infrastructure mode of a Wi-Fi system.

Wi-Fi (WIFI) system of the present invention is a wireless router (AP: Access Point) 200 for transmitting a wireless signal according to the type or use mode of the plurality of terminals (smartphones, etc. 210 to within a certain radius) The present invention relates to an apparatus and a method for enabling a terminal to automatically select a router (AP) in an infrastructure mode for exchanging data.

Infrastructure mode is a common form of Wi-Fi use.

For example, if you connect a wireless router to a wired LAN cable that transmits Internet signals and install it in your home, you can see wireless internet access from all the laptops and smartphones nearby.

This form is typical of the intrastructural mode.

3 is a view showing an embodiment of the router automatic selection device of the Wi-Fi (WIFI) system according to the present invention.

The router automatic selection apparatus of the Wi-Fi system according to the present invention 300 includes a preference list setting unit 310, a name searching unit 320, a reception sensitivity unit 330, a throughput measuring unit 340, and a display unit 350. Include.

The preference list setting unit 310 presets a preferred AP (access point) candidate in a specific Wi-Fi zone of a home, an office, or a main mobile area, and selects a first AP list based on this.

The AP list may be arranged by rank.

The name retrieval unit 320 selects a second AP list by extracting an AP that has subscribed to a service based on an access point name (SSID: Service Set Identifier) from the first AP list.

That is, if the AP of the company that the user of the terminal subscribed to the service is included in the first AP list, the second AP list is selected based on the AP.

In the second AP list, a user may select from the first AP list and manually include the preferred AP in the home or office.

In addition, if there is no AP included in the second AP list, it is possible to select all APs that are OPEN without using a password.

The reception sensitivity unit 330 selects a third AP list by extracting an AP having a predetermined reception sensitivity or more from the second AP list.

If the reception sensitivity received by the user terminal from the AP is too weak, the connection state is poor and only the AP having a predetermined reference strength or more is selected as the selected AP.

The throughput measuring unit 340 selects a fourth AP list by measuring downlink throughput during a reference time for each AP in the third AP list.

For each AP included in the third AP list, a file is requested from the same server located on the Internet, and downlink throughput from the server is measured for a predetermined time to select 4 AP lists for the AP.

Only the APs with good throughput measurements are selected to select the 4 AP list. If the throughput is 0bps or the server itself fails, the AP is not available and is excluded from the selection of the 4 AP list.

The display unit 350 displays the fourth AP list so that the user can select it.

The router automatic selection apparatus in the present invention includes a preference list setting unit, a reception sensitivity unit, and a throughput measurement unit to allow a user to select an optimal router in a specific Wi-Fi zone.

In the search process (S140) of FIG. 1, the user may automatically perform the process.

The throughput measuring unit 340 may perform the throughput measurement only for APs having a reference rank or higher in the third AP list.

That is, when there are too many APs included in the third AP list, it is to shorten the discovery process by performing throughput measurement on only the top few.

The router automatic selection apparatus in the present invention may be an example in which the user can select the final candidate presented by the terminal.

The router automatic selection apparatus according to the present invention may further include an automatic connection unit (not shown), and the automatic connection unit may perform an association process with the first rank router AP in the fourth AP list.

In order to perform the combined process with the AP, the authentication process must be performed, and the authentication process can be set to be automatically input from the terminal.

In the present invention, the router automatic selection device further includes a comparison unit (not shown), and the comparison unit is configured to increase the amount of data in the uplink (Uplink) during the reference time after combining with the first rank router AP in the fourth AP list. Extract the difference value of downlink data amount.

When the difference value is greater than or equal to the reference value, the automatic connection unit changes the connection with the first rank router AP and performs an association process with the second rank router AP in the fourth AP list.

The router automatic selection apparatus of the Wi-Fi system according to the present invention compares the amount of data transmission in the upward direction and the downward direction after the association process of the user terminal to the router (AP) to determine that the connected router is unstable. It will automatically discover and connect to other routers.

4 is a flowchart illustrating a router automatic selection method of a Wi-Fi system according to the present invention.

The preference list setting step selects the first AP list based on a router (AP) candidate previously set in the Wi-Fi zone (S410).

A second AP list is selected by extracting an AP subscribed to a service based on an access point name (SSID: Service Set Identifier) from the first AP list (S420).

A third AP list is selected by extracting an AP having a preset reception sensitivity from the second AP list (S430).

For each AP in the third AP list, the downlink throughput from the server during the reference time is measured to select the fourth AP list (S440).

In the throughput measurement, the throughput measurement may be performed only for APs having a reference rank or higher in the third AP list.

That is, when there are too many APs included in the third AP list, it is to shorten the discovery process by performing throughput measurement on only the top few.

The fourth AP list is displayed (S450).

The router automatic selection apparatus of the present invention may further include an automatic connection step (not shown), and the automatic connection unit may perform an association process with the first rank router AP in the fourth AP list.

The automatic router selection device in the present invention further includes a comparison step (not shown), wherein the comparison step includes an uplink amount of data during a reference time after combining with the first rank router AP in the fourth AP list. Extract the difference between the amount of data and the downlink data amount.

In the automatic connection step (not shown), if the difference is greater than or equal to the reference value, the connection with the first rank router (AP) is transferred and the second rank router (AP) of the fourth AP list performs an association process.

The comparison step of extracting the difference value between the data amount in the upward direction and the data amount in the downward direction is repeated at predetermined intervals, and switching with the first rank router AP and associating with the second rank router AP based on the difference value. Can be performed.

5 is a view showing an application embodiment of the router automatic selection method of the Wi-Fi (WIFI) system according to the present invention.

The automatic router selection method of the Wi-Fi system according to the present invention may be an embodiment in which an automatic connection with a first-class AP of the display unit 350 is possible.

However, the difference value between the amount of data in the uplink (Uplink) and the amount of data in the downlink (Downlink) is extracted during the reference time after the combining process with the first-order router (AP) (S520).

If the difference is greater than or equal to the reference value (S530), the connection with the first rank router (AP) of the 4 AP list is switched (S540).

 In addition, an association process with an AP 2 of the fourth AP list may be automatically performed.

The apparatus and method for automatically selecting a router of a WIFI system according to the present invention compares the amount of data transmission in an uplink direction and a downlink direction after an association process of a user terminal to a router (AP). By judging, other routers can be detected and connected automatically.

As described above, optimal embodiments have been disclosed in the drawings and the specification. Although specific terms have been employed herein, they are used for purposes of illustration only and are not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will appreciate that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

Claims (9)

A preference list setting unit which selects a first AP list based on a preset router (AP) candidate in a Wi-Fi zone;
A name search unit for extracting an AP subscribing to a service based on an access point name (SSID: Service Set Identifier) from the first AP list and selecting a second AP list;
A reception sensitivity unit for extracting an AP having a preset reception sensitivity from the second AP list and selecting a third AP list;
A throughput measurement unit configured to select a fourth AP list by measuring downlink throughput during a reference time for each AP of the third AP list; And
And a display unit for displaying the fourth AP list. A router (AP) automatic selection device of a WIFI system. The method of claim 1, wherein the throughput measuring unit
The AP (Access Point) automatic selection device of the WIFI (WIFI) system, characterized in that for performing the throughput measurement only for the AP or more of the reference rank in the third AP list. The method of claim 1,
And an automatic connection unit for performing an association process with a first rank router (AP) in the fourth AP list. The method of claim 3, wherein
And a comparator for extracting a difference value between the amount of data in the uplink and the amount of data in the downlink for a reference time after the combining process with the first rank router AP.
The automatic connection unit transfers the connection with the first rank router (AP) when the difference is greater than or equal to the reference value, and performs an association process with the second rank router (AP) in the fourth AP list. (WI) A router (AP) automatic selection device of a system. A preference list setting step of selecting a first AP list based on a preset router (AP) candidate in a Wi-Fi zone;
A name searching step of extracting an AP subscribing to a service based on an access point name (SSID: Service Set Identifier) from the first AP list and selecting a second AP list;
A reception sensitivity checking step of extracting an AP having a preset reception sensitivity from the second AP list and selecting a third AP list;
A throughput measurement step of selecting a fourth AP list by measuring downlink throughput during a reference time for each AP of the third AP list; And
And a display step of displaying the fourth AP list. A method of automatically selecting a router (AP) of a WIFI system. The method of claim 5, wherein the throughput measurement step
The AP (Access Point) automatic selection method of the Wi-Fi (WIFI) system, characterized in that for performing the throughput measurement only for the AP of the third or higher rank in the third AP list. The method of claim 5, wherein
And an automatic connection step of performing an association process with the first rank router (AP) in the fourth AP list. The method of claim 7, wherein
And a comparison step of extracting a difference value between the amount of data in the uplink and the amount of data in the downlink during the reference time after the combining process with the first rank router AP.
In the automatic connection step, if the difference is greater than or equal to the reference value, the connection with the first rank router (AP) is switched and the second rank router (AP) of the fourth AP list is performed. How to automatically select a router (AP) of a WIFI system. The method of claim 8,
The comparison step is repeated at predetermined intervals, and the switching with the first rank router AP and the association with the second rank router AP are performed based on the difference value. How to automatically select a router (AP) of the system.

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