KR20150011139A - Method for searching wireless lan channel and wireless terminal using thereof - Google Patents

Method for searching wireless lan channel and wireless terminal using thereof Download PDF

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Publication number
KR20150011139A
KR20150011139A KR20130086027A KR20130086027A KR20150011139A KR 20150011139 A KR20150011139 A KR 20150011139A KR 20130086027 A KR20130086027 A KR 20130086027A KR 20130086027 A KR20130086027 A KR 20130086027A KR 20150011139 A KR20150011139 A KR 20150011139A
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South Korea
Prior art keywords
wireless lan
channel
priority
wireless
wlan
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KR20130086027A
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Korean (ko)
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조승현
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에스케이텔레콤 주식회사
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Priority to KR20130086027A priority Critical patent/KR20150011139A/en
Publication of KR20150011139A publication Critical patent/KR20150011139A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/14—Access restriction or access information delivery, e.g. discovery data delivery using user query or user detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention provides a wireless LAN searching method. The present invention includes the steps of: setting up at least one search priority wireless LAN channel among at least one wireless LAN channels for accessing one among wireless LAN Aps; broadcasting a probe request to at least one wireless LAN AP within at least one wireless LAN channel set by a priority; receiving at least one probe response message in response to the probe request; stopping searching for the wireless LAN channel in the case that an identifier included in at least one probe response message is matched with the identifier of the prestored wireless LAN AP.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wireless LAN (WLAN)

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless LAN channel search method and a wireless terminal using the same, and more particularly, to a method and a terminal capable of shortening a channel search time by setting a priority wireless LAN channel.

Recently, wireless terminals such as smart pads, tablet PCs, and smart phones have been increasing in popularity, and wireless terminals that are trying to access a wireless LAN AP are increasing. At this time, the wireless terminal sequentially searches a plurality of channels existing in a certain band and tries to access a wireless LAN AP existing in each channel.

At this time, a method of searching for a wireless LAN channel is performed by considering the characteristics of a channel and a wireless LAN AP. In relation to a method of searching for a wireless LAN channel, a prior art 2006-0078221 (published on Jul. 2006) discloses a method of distinguishing a channel according to frequency interference and a waiting time for each divided channel, Is reduced.

However, since the wireless terminal must perform the process of broadcasting the probe request to the wireless LAN AP and receiving the probe response message from the wireless LAN AP for each channel, the channel search process takes a long time, And the quality of experience (QoE) of the user is lowered.

Korean Patent Publication No. 2006-0078221 (published on July 5, 2006) discloses a "method of searching for a channel of a wireless LAN card ".

According to an embodiment of the present invention, when a wireless terminal searches for a wireless LAN channel, the wireless terminal firstly searches for a priority wireless LAN channel in order of frequent connection or recent access, thereby reducing the time required for channel search The present invention can provide a wireless LAN channel search method and a wireless terminal using the same. It should be understood, however, that the technical scope of the present invention is not limited to the above-described technical problems, and other technical problems may exist.

According to an aspect of the present invention, there is provided a method of setting a search priority wireless LAN channel among at least one wireless LAN channel to connect to one of at least one wireless LAN access point A step of broadcasting a probe request to at least one wireless LAN AP in at least one wireless LAN channel set as a priority, a step of transmitting at least one probe response in response to a probe request, And stopping the WLAN channel search if the identifier included in the at least one probe response message matches the identifier of the pre-stored WLAN AP.

According to any one of the above-mentioned means for solving the problems of the present invention, when searching for a wireless LAN channel in a wireless terminal, priority is given to a priority wireless LAN channel in the order in which the wireless terminal has frequently accessed or recently accessed, The power consumption of the wireless terminal can be reduced, and the empirical quality of the user can be increased.

1 is a block diagram for explaining a wireless LAN channel search system according to an embodiment of the present invention.
2 is a block diagram illustrating the wireless terminal shown in FIG.
FIG. 3 is a diagram comparing an embodiment for searching for a channel in the wireless terminal shown in FIG. 1 and an embodiment for searching for a channel in a conventional wireless terminal.
4 is a diagram illustrating a process in which data is transmitted and received between the respective components included in the wireless LAN channel search system of FIG. 1 according to an embodiment of the present invention.
5 is a flowchart illustrating a method of searching for a wireless LAN channel according to an exemplary embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "electrically connected" with another part in between . Also, when an element is referred to as "including" an element, it is to be understood that the element may include other elements as well as other elements, And does not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram for explaining a wireless LAN channel search system according to an embodiment of the present invention. Referring to FIG. 1, a wireless LAN channel search system 1 may include a wireless terminal 100 and at least one wireless LAN AP 300. However, since the wireless LAN channel search system 1 of FIG. 1 is only one embodiment of the present invention, the present invention is not limited to FIG.

The wireless terminal 100 may be a terminal that searches for a wireless channel and accesses at least one wireless LAN AP 300 included in the wireless channel searched. At this time, the wireless terminal 100 can set a search priority wireless LAN channel to the wireless terminal 100 when searching for a wireless LAN AP 300 to which the wireless terminal 100 can connect. Here, the priority wireless LAN channel may be a channel in which the wireless LAN AP 300 frequently used in the wireless terminal 100 exists or a channel in which the wireless LAN AP 300 currently used in the wireless terminal 100 exists Lt; / RTI > Also, the priority wireless LAN channel can be designated by a predetermined number, which can be changed. When the wireless terminal 100 searches for a priority wireless LAN channel, if there is no wireless LAN AP 300 or a wireless LAN access point 300 that is frequently used, A search for a wireless LAN channel can be performed. Here, the search for the entire wireless LAN channel may be sequential, in reverse order, or randomly.

At this time, the wireless terminal 100 may be implemented as a terminal capable of connecting to a remote server or a terminal. The wireless terminal 100 is a wireless communication device that is guaranteed to be portable and mobility, for example, and may be any type of wireless communication device such as a smartphone, a smartpad, a tablet PC, And may include a handheld based wireless communication device.

When at least one WLAN AP 300 receives a probe request from the wireless terminal 100, it transmits a probe response message in response to the probe request to the wireless terminal 100. Then, upon receiving a connection request from the wireless terminal 100, the connection with the wireless terminal 100 can be performed.

An example of a wireless LAN channel search system according to an embodiment of the present invention will be described below.

Recently, wireless terminals such as smart pads, tablet PCs, and smart phones have been increasing in popularity, and wireless terminals that are trying to access a wireless LAN AP are increasing. At this time, the wireless terminal sequentially searches for 13 channels existing at 2.4 GHz and 19 channels existing at 5 GHz, and attempts to access a wireless LAN AP existing in each channel.

However, since the wireless terminal must perform the process of broadcasting the probe request to the wireless LAN AP and receiving the probe response message from the wireless LAN AP for each channel, the channel search process takes a long time, And the quality of experience (QoE) of the user is lowered.

Accordingly, when searching for a wireless LAN channel in a wireless terminal, the wireless LAN channel search system according to an exemplary embodiment of the present invention searches for a priority wireless LAN channel first in the order in which the wireless terminal has frequently accessed or recently accessed , The time required for the channel search can be reduced, and the empirical quality of the user using the wireless terminal can be enhanced.

FIG. 2 is a configuration diagram for explaining a wireless terminal shown in FIG. 1, FIG. 3 is a diagram comparing an embodiment for searching for a channel in the wireless terminal shown in FIG. 1 and an embodiment for searching for a channel in a conventional wireless terminal to be.

2, the wireless terminal 100 according to an exemplary embodiment of the present invention includes a priority wireless LAN channel setting unit 110, a priority search unit 130, a transmission unit 150, a reception unit 170, And a confirmation unit 190. [ An identifier according to an embodiment of the present invention is defined as a concept including an SSID (Service Set Identifier).

The priority wireless LAN channel setting unit 110 may set a priority wireless LAN channel based on at least one of a connection date and a connection count of at least one wireless LAN AP 300 connected to the wireless terminal 100 have. That is, the priority wireless LAN channel setting unit 110 can set a priority wireless LAN channel using the pattern of the wireless terminal 100. [

The priority wireless LAN channel setting unit 110 may set the priority wireless LAN channel by the following three methods. At this time, the three methods can be variously changed.

The first method is that the priority wireless LAN channel setting unit 110 stores at least one wireless LAN channel including at least one wireless LAN access point 300 connected to the wireless terminal 100, And sets a predetermined number of wireless LAN channels among the wireless LAN channels as a priority wireless LAN channel. For example, when the WLAN AP 300 having the SSID "A" is located in the channel 13 of the 2.4 GHz band and the WLAN AP 300 having the SSID "B" is located in the channel 1 of the 2.4 GHz band And the wireless terminal 100 has a log connected to "A" and "B ". In this case, the priority wireless LAN channel setting unit 110 may store channel # 13 in the 2.4 GHz band and channel # 1 in the 2.4 GHz band. For example, the priority wireless LAN channel setting unit 110 may map 2.4 GHz, channel 13, connection date, and access AP information and store the information as metadata.

The second method is that the priority wireless LAN channel setting unit 110 stores at least one wireless LAN channel including at least one wireless LAN access point 300 connected to the wireless terminal 100, Arranges one wireless LAN channel in a reverse order, and sets a predetermined number of wireless LAN channels among the aligned wireless LAN channels as a priority wireless LAN channel. For example, when the wireless LAN AP 300 having the SSID of "a " is located in the channel 36 of the 5 GHz band and the wireless LAN AP 300 having the SSID of" It is assumed that the wireless LAN AP 300 having the SSID of "Da" is located in the channel 44 of the 5 GHz band and the wireless terminal 100 has the log sequentially connected to "a", "b" lets do it. In this case, the priority WLAN channel setting unit 110 may store the channel in the order of channel # 44 in the 5 GHz band, channel # 40 in the 5 GHz band, and channel # 36 in the 5 GHz band. That is, it is possible to sort and store the log of the time period connected to the wireless terminal 100 in the reverse order. By doing so, the priority wireless LAN channel can be sorted in the latest order in which the wireless terminal 100 is connected.

In the third method, when the priority wireless LAN channel setting unit 110 connects to at least one wireless LAN access point 300 connected to the wireless terminal 100, at least one wireless LAN access point 300 including the wireless LAN access point 300 The method comprising the steps of: counting at least one WLAN channel by channel, sorting at least one WLAN channel in descending order based on the number counted for each channel, setting a predetermined number of WLAN channels among at least one aligned WLAN channel And setting it as a priority wireless LAN channel. For example, when the wireless LAN AP 300 having the SSID "a" is located in channel 12 at 2.4 GHz and the wireless LAN AP 300 having the SSID "b" is located in channel 10 at 2.4 GHz, Assume that the wireless terminal 100 has a log of accessing "a" six times and "b" two times. In this case, the priority wireless LAN channel setting unit 110 may sort and store in descending order based on the number counted in the order of channel 12 in the 2.4 GHz band and channel 10 in the 2.4 GHz band.

The third method can be defined as applying the concept of the frequency with which the wireless terminal 100 accesses the wireless LAN AP 300, and may be implemented by adding time concepts to the concept of frequency. For example, as a result of analyzing the connection log of the wireless terminal 100 to the wireless LAN AP 300, it is determined that the wireless LAN AP 300 having the SSID (2.4 GHz, channel 2) Assume that the user accesses the wireless LAN AP 300 having the SSID "B" (2.4 GHz, channel 10) 6 times by 6:00 PM and 9 times from 7:00 PM to 1:00 AM. In this case, when the wireless terminal 100 is connected at 10 o'clock, the second channel can be preferentially searched, and the tenth channel can be searched next. In addition to applying the concept of time on a day, it can also be divided into weekly, monthly, and yearly units. For example, a user may access a wireless LAN AP 300 located at a company at 10 am on weekdays and a wireless LAN access point 300 located at a house 10 am on weekends.

The priority search unit 130 sets a search priority wireless LAN channel among at least one wireless LAN channel to connect to any one of the at least one wireless LAN APs 300. At this time, the priority WLAN channels of the second method and the third method described above can be searched in the ordered order.

The transmitting unit 150 broadcasts a probe request to at least one wireless AP 300 in at least one wireless LAN channel set in a priority order. For example, the transmitting unit 150 may transmit a probe request to at least one wireless LAN AP 300 located in channel 13 of 2.4 GHz using a broadcasting method other than unicast, i.e., a wireless LAN AP 300, Without broadcasting.

The receiving unit 170 receives at least one probe response message in response to the probe request. In addition, if the identifiers included in at least one probe response message match the identifiers of the pre-stored WLAN APs 300, the verification unit 190 may stop the WLAN channel search. At this time, the identifier may include an SSID (Service Set Identifier). The SSID of the pre-stored WLAN AP 300 may be the SSID in which the record accessed from the wireless terminal 100 exists. For example, in order for the wireless terminal 100 to access a wireless LAN AP 300, if there is no password, an input event to access the wireless LAN AP 300 must exist. If there is a password, There must be an event for inputting a password for connection to the wireless LAN AP 300. [ In this way, the WLAN AP 300 in which the input event occurred in the wireless terminal 100 exists can be stored in the wireless terminal 100 itself using a log or the like. Therefore, the SSID of the pre-stored WLAN AP 300 may be the SSID of the WLAN AP 300 in which the input event exists in the wireless terminal 100 and the access log exists.

If the identifier included in at least one probe response message does not match the identifier of the pre-stored WLAN AP, the wireless terminal 100 transmits the remaining WLAN channels excluding the priority WLAN channel among the at least one WLAN channel Can be searched.

 The expected WLAN channel search time by the WLAN channel search method according to an embodiment of the present invention having the above-described configuration can be calculated by Equation (1).

Figure pat00001

Here, T denotes a predicted wireless LAN channel search time, C denotes one channel search time, i denotes a predetermined number of priority wireless LAN channels, Means a probability of finding a wireless LAN AP 300 having an identical SSID, and N means the number of all wireless LAN channels.

In this case, when the existing WLAN channel search method is used, the expected channel search time is expressed by Equation 2 below.

Figure pat00002

Comparing Equations (1) and (2), since the value of a is higher for a user who uses the wireless terminal 100 in a predetermined place, the time required for searching for a wireless LAN channel is determined by using an existing wireless LAN channel search method The amount of time required is reduced.

For example, the time required to search one wireless LAN channel is 0.1 second, and the conventional wireless LAN channel search method takes 3.2 seconds to search all 32 channels. On the other hand, assuming that the probability of finding the WLAN AP 300 is 50% by searching only five priority channels using the WLAN channel search method according to an embodiment of the present invention, 1.6 seconds, and can save 50% of the time.

Referring to FIG. 3, (a) shows a conventional WLAN channel search method, and FIG. 3 (b) shows a channel search method according to an embodiment of the present invention. (A) are assigned to the wireless terminal 100 and the wireless LAN access point 300 in the conventional wireless LAN channel search method according to an embodiment of the present invention. However, (a) The wireless LAN channel search method according to the embodiment is not used.

(a), when the wireless terminal 100 searches for 13 channels in the 2.4 GHz band, the wireless terminal 100 searches sequentially from channels 1 to 13. That is, a probe request may be broadcast to at least one wireless LAN AP 300 in the first channel, and a probe response message may be received in response to the probe request. At this time, the wireless terminal 100 waits for the allocated time on each channel and can search for the next channel.

Then, the wireless terminal 100 searches at least one wireless LAN AP 300 existing in the first to thirteen channels from the first channel to the thirteenth channel sequentially, and generates a list for the AP. Here, the wireless terminal 100 analyzes the AP list to check whether or not there is an SSID with a previously accessed record, and determines whether or not to connect.

On the other hand, in the method of searching for a wireless LAN according to an embodiment of the present invention, a case where the wireless terminal 100 sets channel 5 and channel 6 as a priority wireless LAN channel is exemplified. In this case, the wireless terminal 100 preferentially searches for the fifth channel. That is, the probe request may be broadcast to at least one wireless LAN AP 300 in the channel # 5, and a probe response message may be received in response to the probe request. At this time, the wireless terminal 100 waits for the allocated time on each channel and can search for the next channel. Then, the wireless terminal 100 generates a list of at least one wireless LAN AP 300 in the channel 5 and at least one wireless LAN AP 300 in the channel 6, and generates a list The SSID of the at least one wireless LAN AP 300 and the SSID of the previously accessed record are compared and checked. If there is a wireless LAN AP 300 having an SSID with a record previously connected to the wireless terminal 100 in channels 5 and 6, it is possible to search for channels 5 and 6 only The channel search may be terminated.

2 and 3 may be easily derived from the same or similar contents as those of the WLAN channel search method described above with reference to FIG. Omit it.

4 is a diagram illustrating a process in which data is transmitted and received between the respective components included in the wireless LAN channel search system of FIG. 1 according to an embodiment of the present invention. Hereinafter, an example of a process of transmitting and receiving a signal according to an embodiment of the present invention will be described with reference to FIG. 4. However, the present invention is not limited to this embodiment, It is apparent to those skilled in the art that the process of transmitting and receiving the shown data can be changed.

4, when the wireless terminal 100 accesses at least one wireless LAN AP 300 (S4100), the wireless terminal 100 can store the accessed wireless LAN AP, the connection date, and the number of accesses .

At this time, if an event to access the wireless LAN AP 300 occurs (S4300), the wireless terminal 100 searches for a stored priority wireless LAN channel (S4400), and determines whether at least one The wireless LAN access point 300 broadcasts a probe request (S4500).

The wireless terminal 100 receives a probe response to the probe request from at least one wireless LAN AP 300 in step S4600 and determines whether there is an SSID matching the SSID of the stored wireless LAN AP 300 (S4700). At this time, the above-described steps (S4400 to S4600) may be repeated for a predetermined number of priority wireless LAN channels.

If there is an SSID that matches the SSID of the stored WLAN AP 300, the wireless terminal 100 attempts to access the WLAN AP 300 (S4800), and the SSID of the stored WLAN AP 300 If there is no matching SSID, the remaining wireless LAN channels excluding the priority wireless LAN channel are searched (S4900).

Since the WLAN channel search method of FIG. 4 is not described, it can be easily deduced from the same or the same contents as those described in the WLAN channel search method of FIGS. 1 to 3, .

The order between the above-described steps S4100 to S4900 is only an example, but is not limited thereto. That is, the order among the above-described steps S4100 to S4900 may be mutually varied, and some of the steps may be executed or deleted at the same time.

5 is a flowchart illustrating a method of searching for a wireless LAN channel according to an exemplary embodiment of the present invention. Referring to FIG. 5, the wireless terminal sets a search priority wireless LAN channel among at least one wireless LAN channel to connect to any one of the at least one wireless LAN AP (S5100).

Then, a probe request is broadcasted to at least one wireless LAN AP in at least one wireless LAN channel set as a priority (S5200).

Here, if at least one probe response message is received in response to the probe request (S5300), and the identifier included in at least one probe response message matches the identifier of the pre-stored WLAN AP, The channel search is interrupted (S5400). At this time, the identifier may include the SSID.

Since the WLAN channel search method of FIG. 5 is not described, it can be easily deduced from the same or described contents of the WLAN channel search method through FIGS. 1 to 4, .

The method of searching for a wireless LAN channel according to the embodiment described with reference to FIG. 5 may also be implemented in the form of a recording medium including instructions executable by a computer, such as an application executed by a computer or a program module. Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. In addition, the computer-readable medium may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes any information delivery media, including computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transport mechanism.

The method of searching for a wireless LAN channel according to an embodiment of the present invention may be executed by an application installed in a terminal (which may include a program included in a platform or an operating system basically installed in the terminal) (I.e., a program) directly installed on a master terminal by a user via an application providing server such as an application store server, an application, or a web server associated with the service. In this regard, the wireless LAN channel search method according to an embodiment of the present invention is implemented as an application installed in a terminal or directly installed by a user (i.e., a program) Can be recorded on the medium.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

Claims (9)

A wireless LAN channel search method executed by a wireless terminal,
Setting a search priority wireless LAN channel among at least one wireless LAN channel to connect to any one of the at least one wireless LAN AP;
Broadcasting a probe request to at least one wireless LAN AP in at least one wireless LAN channel set in the priority order;
Receiving at least one probe response message in response to the probe request; And
If the identifier included in the at least one probe response message matches the identifier of the pre-stored WLAN AP, stopping the WLAN channel search
Wherein the wireless LAN channel search method comprises:
The method according to claim 1,
The priority wireless LAN channel includes:
The connection date of the at least one wireless LAN access point connected to the wireless terminal, and the connection number of the at least one wireless LAN access point connected to the wireless terminal.
The method according to claim 1,
Wherein the setting of the priority wireless LAN channel comprises:
Storing at least one wireless LAN channel including at least one wireless LAN access point connected to the wireless terminal; And
Setting a predetermined number of wireless LAN channels among the stored at least one wireless LAN channel as a priority wireless LAN channel
The method comprising the steps of:
The method according to claim 1,
Wherein the setting of the priority wireless LAN channel comprises:
Sequentially storing at least one wireless LAN channel including at least one wireless LAN access point connected to the wireless terminal;
Arranging at least one wireless LAN channel sequentially stored in a reverse order; And
Setting a predetermined number of wireless LAN channels of the aligned at least one wireless LAN channel as a priority wireless LAN channel
The method comprising the steps of:
The method according to claim 1,
Wherein the setting of the priority wireless LAN channel comprises:
Counting at least one WLAN channel including the at least one WLAN AP for each channel when the wireless terminal accesses the at least one WLAN AP;
Arranging the at least one wireless LAN channel in descending order based on the number counted for each channel; And
Setting a predetermined number of wireless LAN channels of the aligned at least one wireless LAN channel as a priority wireless LAN channel
The method comprising the steps of:
The method according to claim 4 or 5,
And the priority wireless LAN channel is searched in the ordered order.
The method according to claim 1,
If the identifier included in the at least one probe response message does not match the identifier of the pre-stored WLAN AP, searching for a remaining WLAN channel excluding the priority WLAN channel among the at least one WLAN channel
Further comprising the step of:
8. The method of claim 1 or 7,
Wherein the identifier comprises an SSID (Service Set Identifier).
A wireless terminal for executing a wireless LAN channel search method,
A priority search unit configured to set a priority wireless LAN channel among at least one wireless LAN channel to connect to any one of at least one wireless LAN AP;
A transmitting unit for broadcasting a probe request to at least one wireless LAN AP in at least one wireless LAN channel set in the priority order;
A receiving unit for receiving at least one probe response message in response to the probe request; And
When the service set identifier (SSID) included in the at least one probe response message matches the SSID of the pre-stored wireless LAN AP,
The wireless terminal.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018012663A1 (en) * 2016-07-12 2018-01-18 가온미디어 주식회사 Method for controlling optimal environment wireless lan channel of wireless lan ap
KR102506829B1 (en) 2021-09-28 2023-03-09 (주)지티웨이브 Wireless lan ap-based communication environment improvement system and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018012663A1 (en) * 2016-07-12 2018-01-18 가온미디어 주식회사 Method for controlling optimal environment wireless lan channel of wireless lan ap
KR102506829B1 (en) 2021-09-28 2023-03-09 (주)지티웨이브 Wireless lan ap-based communication environment improvement system and method

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