KR101648458B1 - Method for controlling remote wireless lan using data packet length in wireless lan - Google Patents

Method for controlling remote wireless lan using data packet length in wireless lan Download PDF

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Publication number
KR101648458B1
KR101648458B1 KR1020160027556A KR20160027556A KR101648458B1 KR 101648458 B1 KR101648458 B1 KR 101648458B1 KR 1020160027556 A KR1020160027556 A KR 1020160027556A KR 20160027556 A KR20160027556 A KR 20160027556A KR 101648458 B1 KR101648458 B1 KR 101648458B1
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South Korea
Prior art keywords
wireless lan
control message
wireless terminal
remote
remote wireless
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KR1020160027556A
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Korean (ko)
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강상민
박창일
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(주)아이앤씨테크놀로지
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H04W28/065—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information using assembly or disassembly of packets
    • 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
    • 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]

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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 relates to a technology which enables control of a remote wireless LAN equipment in a state in which a wireless terminal is not connected to the remote wireless LAN equipment. To this end, in a state in which a wireless terminal (21) and a remote wireless LAN equipment (23) are not connected to each other, the wireless terminal (21) generates a control message having a form in which a value of data to be controlled and a value of specific pattern data are converted into a data length and periodically transmits the generated control message to a specific wireless LAN frequency band. In response thereto, the remote wireless LAN equipment (23) periodically searches for the specific wireless LAN frequency band to acquire a control message, accesses a predetermined wireless router using the same, and then transmits the access result to the wireless terminal (21). Accordingly, the wireless terminal (21) can control the remote wireless LAN equipment even while not wirelessly accessing the remote wireless LAN equipment (23).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a remote wireless LAN control method using a data packet length in a wireless LAN environment,

The present invention relates to a technique for controlling a remote wireless LAN device in a state in which a wireless terminal is not connected to a remote wireless LAN device, To a remote wireless LAN control method using a data packet length in a wireless LAN environment capable of controlling a remote wireless LAN device through a wireless LAN.

FIG. 1 is a control block diagram of a remote wireless LAN device according to the related art, and includes a wireless terminal 11, a wireless router 12, and a remote wireless LAN device 13 as shown in FIG.

The wireless terminal 11 and the remote wireless LAN device 13 must be connected to each other wirelessly and the remote wireless LAN device 13 operates as an AP (Soft Access Point). At this time, when the wireless terminal 11 acquires an IP address from the remote wireless LAN device 13, the remote wireless LAN device 13 transmits a request for connection from the wireless terminal 11 through IP-based data communication in accordance with a predetermined rule And receives information on a wireless router (Access Point) 12. Thereafter, the remote wireless LAN device 13 releases the connection with the wireless terminal 11 and tries wireless access to the wireless router 12. [ At this time, the wireless terminal 11 also cancels the wireless connection with the remote wireless LAN device 13 and attempts wireless connection to the wireless router 12. [

In this process, since the wireless terminal 11 and the remote wireless LAN device 13 have already disconnected from each other when attempting wireless connection to the designated wireless router 12, their mutual state information can not be known .

Accordingly, it is difficult for the wireless terminal 11 and the remote wireless LAN device 13 to communicate with each other. In order to communicate with each other, the wireless terminal 11 must be connected to the remote wireless LAN device 13 It is troublesome to be connected to another wireless router 12.

As described above, in the remote wireless LAN control method according to the related art, when the wireless terminal and the remote wireless LAN device attempt to connect to the designated wireless router, the information about the remote wireless LAN device There is an inconvenience that the user can not control the remote wireless LAN device through the wireless terminal.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and apparatus for generating a control message in which data values to be controlled by a wireless terminal and specific pattern data values are converted into data lengths in a state where a wireless terminal and a remote wireless LAN device are not connected to each other, The remote wireless LAN device periodically searches for a specific wireless LAN frequency band, acquires a control message, accesses a predetermined wireless router using the wireless LAN device, and transmits the connection result to the wireless terminal, So that the wireless terminal can control the remote wireless LAN device even when the wireless terminal is not wirelessly connected to the remote wireless LAN device.

According to another aspect of the present invention, there is provided a method of controlling a remote wireless LAN using a data packet length in a wireless LAN environment, the method comprising the steps of: (a) And converting the value of the specific pattern data into a data length and periodically transmitting the control message to a specific wireless LAN frequency band; (b) periodically searching the specific wireless LAN frequency band by the remote wireless LAN device to obtain necessary information from the control message; (c) wirelessly connecting to the wireless router using information acquired by the remote wireless LAN device; And (d) after the remote wireless LAN device is wirelessly connected to the wireless terminal using the IP address value of the acquired wireless terminal, the connection success information and remote wireless LAN device information with the wireless terminal are transmitted The method comprising the steps of:

The present invention generates control messages in the form of data length values and specific pattern data values to be controlled by the wireless terminal in a state where the wireless terminal and the remote wireless LAN equipment are not connected to each other, The remote wireless LAN device periodically searches for a specific wireless LAN frequency band, acquires a control message, accesses a predetermined wireless router using the control message, and transmits the connection result to the wireless terminal. Thus, It is possible to control the remote wireless LAN device even when the wireless LAN device is not connected to the LAN device.

In addition, even when the communication environment is poor, the reception rate of the control message of the remote wireless LAN device can be increased.

1 is a block diagram of a conventional wireless LAN system.
2 is a block diagram of a wireless LAN system to which a remote wireless LAN control method according to the present invention is applied.
3 is a control flowchart of a remote wireless LAN control method using a data packet length in a wireless LAN environment according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a control block diagram of a remote wireless LAN device to which a remote wireless LAN control method using a data packet length in a wireless LAN environment according to the present invention is applied. As shown in FIG. 2, the wireless terminal 21, the wireless router 22 And a remote wireless LAN device 23.

The wireless terminal 21 has a unique SSID and a password value to transmit a control message to the wireless router 22 without being connected to the remote wireless LAN device 23 and the wireless terminal 21 wirelessly And has an assigned IP address value.

The remote wireless LAN device 23 is located at a distance where the signal of the wireless router 22 can be detected and received.

FIG. 3 is a flowchart illustrating a control method of a remote wireless LAN control method using a data packet length in a wireless LAN environment according to an exemplary embodiment of the present invention. Referring to FIG. 3, A connection step S3 of the remote wireless LAN device and the wireless router, and connection success information and remote wireless LAN device information transmission step S4.

An operation of generating a control message by the wireless terminal 21 in the first step S1 and transmitting the control message to the wireless router 22 will now be described.

The control message transmitted from the wireless terminal 21 is generated by converting the value of the control data and the specific pattern data value into a length, and the conversion rule thereof is as shown in Table 1 below. Here, the control message includes an SSID (Service Set Identifier), a password (PASSWORD), and an IP address, and is composed of n bytes. The wireless terminal 21 divides each byte of the control message to be transmitted by 4 bits and reassembles the sequence value (4 bits) again. The wireless terminal 21 adds a data padding length (e.g., 257 bytes) to prevent the reassembled control data from colliding with the specific data pattern value added at the time of transmission. The wireless terminal 21 generates a control message in which the sequence value is added as described above, and periodically transmits the generated control message to a specific wireless LAN frequency band. Accordingly, the wireless router 22 can receive and process the received control message by matching with the next received sequence value, even if the control message contains a lot of data, in a complicated environment. Also, the wireless router 22 can precisely filter the data of the received control message, thereby improving the reliability of the control message.

Figure 112016022269833-pat00001

However, when the wireless terminal 21 generates the control message as described above based on Table 1 and transmits the control message to the wireless router 22, the remote wireless LAN device 23 transmits the control message to the wireless LAN device 22, It may not recognize whether it is a control message to be received.

In consideration of this, the wireless terminal 21 inserts a specific pattern data value indicating the type and total length of the control message into the control message as shown in [Table 2] below. Accordingly, the remote wireless LAN device 23 is easily synchronized with the control message transmitted from the wireless terminal 21 to the wireless router 22, and can accurately receive the desired control data included in the control message .

Figure 112016022269833-pat00002

Data of the control message generated based on [Table 1] and [Table 2] in the wireless terminal 21 are transmitted to the wireless router 22 in the order shown in [Table 3] below, Is repeatedly transmitted in the same manner. Table 3 shows example values when a wireless terminal 21 transmits an arbitrary message to the wireless router 22 according to an embodiment of the present invention.

Figure 112016022269833-pat00003

When the wireless terminal 21 transmits the control message to the wireless router 22, the wireless terminal 21 must be assigned with an IP address value from the wireless router 22. At this time, Or broadcast using an ICMP packet. When transmitting the control message, the wireless terminal 21 can acquire the SSID of the currently connected wireless router 22 and its own IP address using its own system information, Can be obtained. At this time, the wireless terminal 21 may generate and transmit a control message for controlling the remote wireless LAN device 23 based on the [Table 1] and [Table 3] with respect to the acquired information.

An operation of acquiring necessary information from the control message transmitted by the remote wireless LAN device 23 in the second step S2 will be described below.

The remote wireless LAN device 23 periodically searches for a specific wireless LAN frequency band and obtains necessary information from the control message. For example, the remote wireless LAN device 23 obtains the modulated SSID, the modulated password, and the modulated IP addresses as the necessary information to restore the original form do.

An operation of wirelessly connecting the remote wireless LAN device 23 to the wireless router 22 in the third step S3 will be described below.

The remote wireless LAN device 23 attempts wireless connection with the wireless router 22 using the acquired information and is wirelessly connected.

In operation S4, the remote wireless LAN device 23 transmits connection success information and remote wireless LAN device information to the wireless terminal 21 as follows.

When the remote wireless LAN device 23 is wirelessly connected to the wireless router 22 to obtain an IP address, the remote wireless LAN device 23 transmits the IP address of the wireless terminal 21 And can be wirelessly connected to the wireless terminal 21 using the address value. At this time, the remote wireless LAN device 23 transmits connection success information and remote wireless LAN device information to the wireless terminal 21.

Accordingly, the user can control the remote wireless LAN device 23 through the wireless terminal 21 in a state where the wireless terminal 21 and the remote wireless LAN device 23 are not wirelessly connected.

Although the preferred embodiments of the present invention have been described in detail above, it should be understood that the scope of the present invention is not limited thereto. These embodiments are also within the scope of the present invention.

21: wireless terminal 22: wireless router
23: Remote WLAN Equipment

Claims (9)

(a) generating a control message in which a value of data to be controlled and a value of specific pattern data are converted into a data length in a state where the wireless terminal is not connected to the remote wireless LAN device, and periodically transmits the control message to a specific wireless LAN frequency band step;
(b) periodically searching the specific wireless LAN frequency band by the remote wireless LAN device to obtain necessary information from the control message;
(c) wirelessly connecting to the wireless router using information acquired by the remote wireless LAN device; And
(d) the remote wireless LAN device is wirelessly connected to the wireless terminal using the IP address value of the wireless terminal among the acquired information, and then transmits connection success information and remote wireless LAN device information with the wireless terminal ≪ / RTI >
The wireless terminal
And inserting a specific pattern data value indicating a type and a total length of a control message into the control message according to the data packet length in the wireless LAN environment.
2. The method of claim 1,
A service set identifier (SSID), a password (PASSWORD), and an IP address (IP address).
The wireless terminal of claim 1,
Wherein the control message is generated by dividing each byte of the control message to be transmitted by 4 bits and then reassembling the sequence value to generate a final control message.
4. The method of claim 3, wherein the sequence value is
Wherein the data packet length in the wireless LAN environment is 4 bits.
The wireless terminal of claim 1,
Wherein a data padding length is added in order to prevent control data included in the control message from colliding with a specific data pattern value added at the time of transmission. LAN control method.
6. The method of claim 5, wherein the pattern length is
Wherein the data packet length is 257 bytes.
delete The method of claim 1, wherein the information required in step (b)
A modulated SSID, a modulated password, and a modulated IP address. The remote wireless LAN control using the data packet length in the wireless LAN environment Way.
The method of claim 1, wherein the remote wireless LAN control method comprises:
Further comprising the step of controlling the remote wireless LAN device through the wireless terminal.
KR1020160027556A 2016-03-08 2016-03-08 Method for controlling remote wireless lan using data packet length in wireless lan KR101648458B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112235791A (en) * 2020-09-11 2021-01-15 华帝股份有限公司 Network configuration-free wireless control method and system for equipment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100052421A (en) * 2008-11-10 2010-05-19 한국전자통신연구원 Appratus and method for providing wlan service using multiple channel
KR20120013508A (en) * 2010-08-05 2012-02-15 삼성전자주식회사 Method and apparatus for connecting wireless network in a digital device
KR20130013238A (en) * 2011-07-27 2013-02-06 엘지전자 주식회사 Appliance and online system including the same
KR20140115644A (en) * 2013-03-21 2014-10-01 (주)정직한기술 Method For setting network of IP Camera Using Smart Phone

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100052421A (en) * 2008-11-10 2010-05-19 한국전자통신연구원 Appratus and method for providing wlan service using multiple channel
KR20120013508A (en) * 2010-08-05 2012-02-15 삼성전자주식회사 Method and apparatus for connecting wireless network in a digital device
KR20130013238A (en) * 2011-07-27 2013-02-06 엘지전자 주식회사 Appliance and online system including the same
KR20140115644A (en) * 2013-03-21 2014-10-01 (주)정직한기술 Method For setting network of IP Camera Using Smart Phone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112235791A (en) * 2020-09-11 2021-01-15 华帝股份有限公司 Network configuration-free wireless control method and system for equipment

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